CN113508556A

CN113508556A - Communication method and device

Info

Publication number: CN113508556A
Application number: CN201980093245.4A
Authority: CN
Inventors: 王静; 吴毅凌; 李晨琬; 李振宇; 蔺波
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-04-04
Filing date: 2019-07-23
Publication date: 2021-10-15
Anticipated expiration: 2039-07-23
Also published as: CN113508556B; WO2020199429A1; WO2020199212A1

Abstract

The application provides a communication method and a communication device, and the method can be applied to communication systems such as V2X, LTE-V, V2V, Internet of vehicles, MTC, IoT, LTE-M, M2M, Internet of things and the like. In the method, the communication equipment with the state of the standby communication equipment can take over the transmission task of the corresponding main communication equipment at any time and continue to carry out service transmission. Therefore, the communication system can ensure the continuity of service transmission through the state change of the main communication equipment and the standby communication equipment of the communication equipment, and can avoid the long-time operation work of the communication equipment so as to prolong the service life of the communication equipment, further improve the transmission efficiency and improve the user experience.

Description

Communication method and device

Cross Reference to Related Applications

This application claims priority from a chinese patent application filed on 04.04.2019 with the application number PCT/CN2019/081568 entitled "a method and apparatus for communication", the entire contents of which are incorporated herein by reference.

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.

Background

In the communication system, the terminal device may be directly connected or connected to the network device through at least one relay device to form a wireless connection, so that the terminal device may successfully access the network based on the wireless connection, and finally implement service communication.

In some scenarios, communication devices (terminal devices and/or relay devices) in a wireless connection are deployed at fixed positions for a long time, and in order to ensure continuity of service transmission, the communication devices often need to continuously operate for a long time, which results in a reduction in service life of the communication devices, and in the event of a failure of a communication device, the wireless connection is also interrupted, and further efficiency of service transmission is achieved.

Disclosure of Invention

The embodiment of the application provides a communication method and a communication device, which are used for improving the efficiency of service transmission.

In a first aspect, an embodiment of the present application provides a communication method, which is applied in a communication system in which communication devices are dual deployed as shown in fig. 1. Wherein the first communication device is one of two communication devices deployed doubly. The method specifically comprises the following steps:

the first communication device sends a first state change instruction to the network device, or acquires the first state change instruction from another device, and then the first communication device can change its own state and radio interface configuration according to the first state change instruction. Wherein the first status change indication is to notify: the state of the first communication device is changed from the standby communication device to the main communication device or from the main communication device to the standby communication device.

By the method, the communication equipment with the state as the main communication equipment can also be changed into the standby communication equipment to stop executing the transmission task at any time, and the communication equipment with the state as the standby communication equipment can take over the transmission task of the corresponding main communication equipment at any time to continue service transmission. Therefore, the communication system can ensure the continuity of service transmission through the state change of the main communication equipment and the standby communication equipment of the communication equipment, and can avoid the long-time operation work of the communication equipment so as to prolong the service life of the communication equipment, further improve the transmission efficiency and improve the user experience.

In one possible design, the first communication device may obtain the first status change indication from the network device, a third communication device, or a second communication device. The third communication device is a parent node of the first communication device, and the second communication device is a primary communication device or a standby communication device corresponding to the first communication device before the state of the first communication device is changed.

In one possible design, the first communication device sends a first change of state request to the network device before the first communication device obtains the first change of state indication from the network device. Wherein the first state change request is to request: the state of the first communication device is changed from the standby communication device to the main communication device or from the main communication device to the standby communication device.

In one possible design, the first communication device sends a first state change request to the third communication device before the first communication device obtains the first state change indication from the third communication device. Wherein the first state change request is to request: the state of the first communication device is changed from the standby communication device to the main communication device or from the main communication device to the standby communication device. The third communication device is a parent node of the first communication device.

According to the design, the network equipment, the third communication equipment or the second communication equipment in the communication system can trigger the state change of the communication equipment, so that the state change triggering mode of the communication equipment in the communication system can be more flexible.

In one possible design, before the first communication device sends the first status change instruction to the network device, the first communication device may determine its current status by:

the first method is as follows: the first communication device sends status information to the network device or a third communication device, wherein the status information is used for notifying that: the state of the first communication device is a standby communication device or a main communication device.

By this way, the first communication device can perform state initialization in a manner of actively reporting its own state to the network device or the third communication device.

The second method comprises the following steps: the first communication device receives a status indication sent by the network device or a third communication device, where the status indication is used to indicate that the first communication device is a standby communication device or a main communication device, and the third communication device is a parent node of the first communication device.

By the method, the network device or the third communication device can initiatively initialize the state of the first communication device by sending the state indication.

The third method comprises the following steps: the first communication device receives communication device state configuration information sent by the network device or a third communication device, wherein the state of the first communication device in the communication device state configuration information is a standby communication device or a main communication device, and the third communication device is a parent node of the first communication device.

By this way, the network device or the third communication device can initiatively initialize the state of the first communication device by sending the communication device state configuration information.

The method is as follows: the first communication device receives a second state change instruction sent by the network device or a third communication device, where the second state change instruction is used to notify: the state of the first communication device is changed from a master communication device to a slave communication device or from a slave communication device to a master communication device, and the third communication device is a parent node of the first communication device.

In this way, a plurality of changes of the state of the first communication device can be realized.

In one possible design, the first communication device may send the status information to the network device by:

the first method is as follows: the first communication device sends an identifier of the first communication device to the network device, wherein the identifier of the first communication device includes an indication field, and the indication field is used for indicating that the state of the first communication device is a standby communication device or a primary communication device.

The second method comprises the following steps: the first communication device sends indication information of a second communication device to the network device, wherein the indication information of the second communication device is used for indicating that a main communication device or a standby communication device corresponding to the first communication device is the second communication device.

The third method comprises the following steps: the first communication device sends a status indication to the network device, where the status indication is used to indicate that the first communication device is a standby communication device or a primary communication device.

The method is as follows: the first communication device sends an identifier and a status indication of the first communication device to the network device, where the status indication is used to indicate that the status is a standby communication device or a primary communication device, and the identifier of the first communication device is used to notify: the status indicated by the status indication is a status of the first communication device.

The fifth mode is as follows: the first communication device sends a status indication and indication information of a second communication device to the network device, wherein the status indication is used for indicating that the status of the first communication device is a standby communication device, and the indication information of the second communication device is used for indicating that a primary communication device corresponding to the first communication device is the second communication device.

The method six: the first communication device sends a state indication and indication information of a second communication device to the network device, wherein the state indication is used for indicating that the state of the first communication device is a main communication device, and the indication information of the second communication device is used for indicating that a standby communication device corresponding to the first communication device is the second communication device.

In the above aspect, the indication information of the second communication device is any one of: the identifier of the second communication device, the network identifier of the second communication device, the user identifier of the second communication device, and the access return integrated node identification code of the second communication device.

By this design, the flexibility of the first communication device to transmit the status information can be improved.

In one possible design, when the state of the first communication device is changed to the master communication device, the first communication device obtains the communication configuration information, and then performs wireless interface configuration according to the communication configuration information.

Wherein the wireless interface comprises a wireless interface between the first communication device and a third communication device or a network device, and a wireless interface between the first communication device and a fourth communication device; the fourth communication device is a child node of the second communication device.

Through the design, the first communication device can replace the second communication device, and establishes connection with a child node, a parent node or network equipment of the second communication device, so that the first communication device can take over the transmission task of the second communication device and continue service transmission.

In one possible design, the first communication device may obtain the communication configuration information by:

the first method is as follows: the first communication device acquires the communication configuration information from a second communication device, and the second communication device is a main communication device corresponding to the first communication device before the state of the first communication device is changed.

The second method comprises the following steps: the first communication device receives the communication configuration information from the network device or a third communication device, the third communication device being a parent node of the first communication device.

The third method comprises the following steps: the communication configuration information comprises a first communication configuration information set and a second communication configuration information set; the first communication device receives the first set of communication configuration information from the network device or a third communication device, and the first communication device acquires the second set of communication configuration information from the second communication device, the third communication device being a parent node of the first communication device.

Through the design, the first communication device can inherit the communication configuration of the second communication device and is aligned with the configuration of the child node, the parent node or the network device of the second communication device, so that the failure of wireless connection recovery caused by the misalignment of the configuration is avoided, the network device can be prevented from carrying out unnecessary communication configuration on the first communication device again, and the time of wireless connection interruption can be shortened.

In one possible design, after the first communication device obtains the communication configuration information from the second communication device, the first communication device sends a communication configuration information complete indication to the network device or the third communication device to notify that the first communication device stores the complete communication configuration information, and the first communication device does not need to be configured for communication.

In one possible design, the first communication device sends a communication configuration information request to the network device or a third communication device before the first communication device receives the communication configuration information from the network device or the third communication device. With this design, the first communication device may request the latest complete communication configuration information from the other device to successfully establish the wireless connection when the communication configuration information is not stored by the first communication device, or when the stored communication configuration information is incomplete, or when the stored communication configuration information is not the latest communication configuration information.

In one possible design, sending a communication configuration information request to the network device or a third communication device when the first communication device determines to save the second set of communication configuration information locally before the first communication device receives the first set of communication configuration information from the network device or the third communication device; the communication configuration information request is used for requesting the first communication configuration information set, the communication configuration information request includes a first indication or a second indication, the first indication is used for indicating that the second communication configuration information set is already saved in the first communication device, and the second indication is used for indicating that the first communication configuration information set is not saved in the first communication device.

Through the design, the first communication device can request another part of communication configuration information from the network device or the third communication device when part of communication configuration information is saved, and unnecessary signaling overhead caused by acquiring complete communication configuration information from the network device or the third communication device is avoided.

In one possible design, the communication configuration information includes any one or a combination of the following:

the method comprises the steps that wireless resource configuration information of second communication equipment, measurement configuration information of the second communication equipment, a value of a Radio Link Control (RLC) state variable of the second communication equipment, data cached when the second communication equipment carries out data transmission, a network identifier of fourth communication equipment, a context of the fourth communication equipment, quality of service (QoS) information of the fourth communication equipment, a data radio bearer identifier (DRB ID) of the fourth communication equipment, wireless resource configuration information of the fourth communication equipment and a value of the RLC state variable of the fourth communication equipment are obtained; before the state of the first communication device is changed, the second communication device is a main communication device corresponding to the first communication device, and the fourth communication device is a child node of the first communication device or the second communication device.

In one possible design, the first status change indication includes any one or a combination of the following: a primary and standby communication device correspondence identifier, an identifier of the first communication device, a network identifier of the first communication device, a state indication of the first communication device, an identifier of the second communication device, a network identifier of the second communication device, a state indication of the second communication device, and a state change reason indication; wherein the second communication device is a primary communication device or a backup communication device corresponding to the first communication device before the state of the first communication device is changed.

In one possible design, the first state change request includes any one or a combination of the following: the device identifier of the first communication device, the access backhaul integration node identifier of the first communication device, the network identifier of the first communication device, the C-RNTI of the first communication device, the device identifier of the second communication device, the access backhaul integration node identifier of the second communication device, the network identifier of the second communication device, the C-RNTI of the second communication device, the indication of the reason for the change of state, the alignment indication of radio resource configuration, the alignment indication of measurement configuration, the alignment indication of sub-node configuration, and the alignment indication of IAB configuration.

In one possible design, the first communication device is a communication device that supports access backhaul integrated IAB functionality, and the method further includes: the first communication device actively sends the IAB related information to the network device, or the first communication device sends the IAB related information to the network device after receiving an IAB information inquiry instruction sent by the network device. Wherein the IAB related information is used for the network device to perform status change on the first communication device and/or perform radio resource configuration on the first communication device.

Optionally, the IAB-related information may be any one or a combination of the following: the access return integrated node identification code of the first communication device, the network identifier of the first communication device, the C-RNTI of the first communication device, the access return integrated node identification code of the second communication device, the network identifier of the second communication device, the C-RNTI of the second communication device, a radio resource configuration alignment indication, a measurement configuration alignment indication, a sub-node configuration alignment indication, and an IAB configuration alignment indication.

Through the above design, the first communication device may send its IAB related information to the network device, so that the network device may perform state change and/or radio resource configuration on the network device according to its IAB related information.

In a possible design, the first communication device obtains cell information of a cell to which the second communication device is accessed, and then sends the cell information to the network device, so that the network device can determine whether RRC connection release needs to be performed on the first communication device according to the cell information of the cell to which the second communication device is accessed, so as to ensure that the first communication device and the second communication device paired with the first communication device access the same cell.

In a second aspect, an embodiment of the present application further provides a communication method, which is applied in a communication system in which communication devices are dual-deployed as shown in fig. 1. Wherein the first communication device is one of two communication devices deployed doubly. The method specifically comprises the following steps:

the network equipment acquires a first state change instruction; then, the network device performs wireless interface configuration on the first communication device according to the changed state of the first communication device notified by the first state change instruction. Wherein the first status change indication is to notify: the state of the first communication device is changed from the standby communication device to the main communication device or from the main communication device to the standby communication device.

In one possible design, the network device may obtain the first status change indication by obtaining the first status change indication from any one of:

the first communication device, the second communication device, the third communication device, a core network device, and a local (i.e., the network device).

According to the design, the network device, the third communication device, the first communication device or the second communication device in the communication system can trigger the state change of the communication device, so that the state change triggering mode of the communication device in the communication system can be more flexible.

In one possible design, before the network device receives the first state change indication, the network device may determine the current state of the first communication device by:

the first method is as follows: the network device receives first status information from the first communication device or a third communication device, the first status information notifying: the state of the first communication device is a standby communication device or a main communication device, and the third communication device is a parent node of the first communication device.

In this way, the network device initializes the state of the first communication device through the state of the first communication device reported by the first communication device or the third communication device.

The second method comprises the following steps: the network device receives second status information from a second communication device or a third communication device, the second status information being used to notify: the state of the second communication device is a primary communication device, the network device determines, according to a preset primary-secondary communication device correspondence, that a secondary communication device corresponding to the second communication device is the first communication device, and the third communication device is a parent node of the first communication device.

In this way, the network device initializes the state of the first communication device according to the state of the second communication device reported by the second communication device or the third communication device.

The third method comprises the following steps: the network device receives second status information from a second communication device or a third communication device, the second status information being used to notify: the state of the second communication device is a standby communication device, the network device determines, according to a preset primary-standby communication device correspondence, that a primary communication device corresponding to the second communication device is the first communication device, and the third communication device is a parent node of the first communication device.

The method is as follows: the network device sends a state indication to the first communication device or a third communication device according to communication device state configuration information stored locally or received from a core network device, where the state indication is used to indicate that the state of the first communication device is a standby communication device or a primary communication device, and the third communication device is a parent node of the first communication device.

In this way, the network device may initialize the state of the first communication device according to the communication device state configuration information and by sending a state indication.

The fifth mode is as follows: the network device sends communication device state configuration information to a third communication device, wherein the state of the first communication device in the communication device state configuration information is a standby communication device or a main communication device, and the third communication device is a parent node of the first communication device.

By the mode, the network equipment initializes the state of the first communication equipment according to and sends the state configuration information of the communication equipment.

The method six: the network device sends communication device state configuration information to the first communication device, wherein the state of the first communication device in the communication device state configuration information is a standby communication device or a main communication device.

By the method, the network device can initialize the state of the first communication device according to and send the state configuration information of the communication device.

The method is as follows: the network equipment sends a second state change instruction to the first communication equipment and/or third communication equipment; the second status change indication is used to notify: the state of the first communication equipment is changed from the main communication equipment to the standby communication equipment or from the standby communication equipment to the main communication equipment; the third communication device is a parent node of the first communication device.

The method eight: the network device receiving a second state change indication from a third communication device; the second status change indication is used to notify: the state of the first communication equipment is changed from the main communication equipment to the standby communication equipment or from the standby communication equipment to the main communication equipment; the third communication device is a parent node of the first communication device.

By means of the seventh and eighth aspects, a plurality of changes of the state of the first communication device can be realized.

In one possible design, the network device may receive the first status information from the first communication device by:

the first method is as follows: the network device receives an identifier of the first communication device from the first communication device, wherein the identifier of the first communication device includes an indication field, and the indication field is used for indicating that the state of the first communication device is a standby communication device or a primary communication device.

The second method comprises the following steps: the network device receives indication information of a second communication device from the first communication device, where the indication information of the second communication device is used to indicate that a primary communication device or a standby communication device corresponding to the first communication device is the second communication device.

The third method comprises the following steps: the network device receives a status indication from the first communication device, where the status indication is used to indicate that the first communication device is a standby communication device or a primary communication device.

The method is as follows: the network device receives an identifier and a status indication of the first communication device from the first communication device, where the status indication is used to indicate that the status is a standby communication device or a primary communication device, and the identifier of the first communication device is used to notify: the status indicated by the status indication is a status of the first communication device.

The fifth mode is as follows: the network device receives a status indication and indication information of a second communication device from the first communication device, where the status indication is used to indicate that the status of the first communication device is a standby communication device or a primary communication device, and the indication information of the second communication device is used to indicate that the primary communication device or the standby communication device corresponding to the first communication device is the second communication device.

The method six: the network device receives a status indication and indication information of a second communication device from the first communication device, wherein the status indication is used for indicating that the status of the first communication device is a main communication device, and the indication information of the second communication device is used for indicating that a standby communication device corresponding to the first communication device is the second communication device.

In one possible design, after the network device obtains the first status change instruction, the network device sends communication device status configuration information to a third communication device, or sends the first status change instruction to the third communication device.

Through the design, the information received by the third communication equipment can update the communication equipment state configuration information stored by the third communication equipment.

In one possible design, when the state of the first communication device changes to the master communication device, the network device may configure the first communication device for a wireless interface by:

the first method is as follows: the network device sends communication configuration information to the first communication device.

The second method comprises the following steps: the network device sends a first configuration instruction to the third communication device, wherein the first configuration instruction is used for informing the third communication device to send communication configuration information to the first communication device.

The third method comprises the following steps: the network device sends a second configuration indication to the third communication device, where the second configuration indication is used to notify the third communication device to send the first communication configuration information set to the first communication device.

The method is as follows: the network device sends a first set of communication configuration information to the first communication device.

In the third and fourth modes, the communication configuration information includes the first communication configuration information set and the second communication configuration information set.

Through the design, the network device can enable the first communication device to inherit the communication configuration of the second communication device, so that the failure of wireless connection recovery caused by the fact that the configuration is not aligned is avoided, the network device can also be prevented from carrying out unnecessary communication configuration on the first communication device again, and the time of wireless connection interruption can be shortened.

In one possible design, the network device receives a communication configuration information request from the first communication device before the network device sends the communication configuration information to the first communication device.

Through the design, the first communication device can acquire the communication configuration information in an active request mode.

In one possible design, the network device receives a communication configuration information request from the first communication device before the network device sends the first configuration indication to the third communication device.

In one possible design, before the network device sends the second configuration indication to the third communication device, the network device receives a communication configuration request from the first communication device, where the communication configuration information request is used to request the first communication configuration information set, the communication configuration information request includes a first indication or a second indication, the first indication is used to indicate that the second communication configuration information set is already saved in the first communication device, and the second indication is used to indicate that the first communication configuration information set is not saved in the first communication device.

Through the design, the first communication device can request the network device to configure another part of communication configuration information when saving part of communication configuration information, and unnecessary signaling overhead caused by the fact that the network device configures complete communication configuration information is avoided.

In one possible design, before the network device sends the first communication configuration information set to the first communication device, the network device receives a communication configuration request from the first communication device, where the communication configuration information request is used to request the first communication configuration information set, the communication configuration information request includes a first indication or a second indication, the first indication is used to indicate that the second communication configuration information set is already saved in the first communication device, and the second indication is used to indicate that the first communication configuration information set is not saved in the first communication device.

In one possible design, when the network device receives a communication configuration information complete indication from the first communication device, the network device does not configure the first communication device with communication configuration information, and the communication configuration information complete indication is used for notifying: and the first communication equipment stores complete communication configuration information.

Through the design, when the first communication equipment stores complete communication configuration information, the network equipment is prevented from configuring the communication configuration information for the first communication equipment again.

In one possible design, the first communication device is a communication device that supports access backhaul integrated IAB functionality, and the method further includes: the network equipment receives IAB related information actively reported by the first communication equipment from the first communication equipment; or the network device sends an IAB information query instruction to the first communication device, and instructs the first communication device to send IAB related information. Wherein the IAB related information is used for the network device to perform status change on the first communication device and/or perform radio resource configuration on the first communication device.

By this design, the network device may perform state change and/or radio resource configuration on the first communication device according to the IAB related information of the first communication device.

In a possible design, a network device receives cell information of a cell to which a second communication device is accessed, where the cell information is sent by a first communication device, so that the network device may determine whether RRC connection release needs to be performed on the first communication device according to the cell information of the cell to which the second communication device is accessed, so as to ensure that the first communication device and the second communication device paired with the first communication device access the same cell.

In a third aspect, an embodiment of the present application provides a communication method, which is applied in a communication system in which communication devices are dual-deployed as shown in fig. 1. Wherein the first communication device is one of two communication devices deployed doubly. The method specifically comprises the following steps:

the first communication device sends request information to the network device to request to become a master communication device; or the network equipment sends a query instruction to the first communication equipment to inform the first communication equipment to actively report the pairing state information.

By the method, the network equipment and the two sides of the first communication equipment can synchronously update the state of the first communication equipment and the state of the second communication equipment which has a pairing relation with the first communication equipment.

In one possible design, the request information includes: the access return integration node identification code of the first communication equipment and/or the access return integration node identification code of the second communication equipment; wherein a pairing relationship exists between the first communication device and the second communication device.

In one possible design, the pairing status information includes one or more of: the communication device comprises an identification of the communication device in pairing relation with the first communication device, an IAB node identification code of the communication device in pairing relation with the first communication device, a C-RNTI of the communication device in pairing relation with the first communication device, and a status indication of the communication device in pairing relation with the first communication device. Wherein the status indication is used for indicating that the status of the communication device which has the pairing relation with the first communication device is a standby communication device or a primary communication device.

In a fourth aspect, an embodiment of the present application provides a communication apparatus, including means for performing the steps in the above first aspect or second aspect.

In a fifth aspect, an embodiment of the present application provides a communication device, including at least one processing element and at least one memory element, where the at least one memory element is configured to store programs and data, and the at least one processing element is configured to execute the method provided in the first aspect of the present application.

In a sixth aspect, an embodiment of the present application provides a network device, which includes at least one processing element and at least one storage element, where the at least one storage element is configured to store programs and data, and the at least one processing element is configured to execute the method provided in the second aspect of the present application.

In a seventh aspect, this application embodiment also provides a computer program, which when run on a computer, causes the computer to execute the method provided in any one of the above aspects.

In an eighth aspect, the present application further provides a computer storage medium, in which a computer program is stored, and when the computer program is executed by a computer, the computer is caused to execute the method provided in any one of the above aspects.

In a ninth aspect, an embodiment of the present application further provides a chip, where the chip is used to read a computer program stored in a memory, and perform the method provided in any one of the above aspects.

In a tenth aspect, an embodiment of the present application further provides a chip system, where the chip system includes a processor, and is used to support a computer device to implement the method provided in any one of the above aspects. In one possible design, the system-on-chip further includes a memory for storing programs and data necessary for the computer device. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

fig. 1a is a flowchart illustrating an example of a communication device accessing a network according to an embodiment of the present application;

fig. 1b is a flowchart illustrating an example of a communication device accessing a network according to an embodiment of the present application;

fig. 2 is a flowchart of a communication device accessing a network according to an embodiment of the present application;

fig. 3 is a flowchart of state initialization of a first communication device according to an embodiment of the present disclosure;

fig. 4 is a flowchart of state initialization of a second communication device according to an embodiment of the present application;

Fig. 5 is a flowchart illustrating state initialization of a third communication device according to an embodiment of the present application;

fig. 6 is a flowchart of state initialization of a fourth communication device according to an embodiment of the present application;

fig. 7 is a flowchart of state initialization of a fifth communication device according to an embodiment of the present application;

fig. 8 is a flowchart of state initialization of a sixth communication device according to an embodiment of the present application;

fig. 9 is a flowchart of state initialization of a seventh communication device according to an embodiment of the present application;

fig. 10 is a flowchart of state initialization of an eighth communications device according to an embodiment of the present application;

fig. 11 is a flowchart of a state change trigger of a first communication device according to an embodiment of the present application;

fig. 12 is a flowchart of a state change trigger of a second communication device according to an embodiment of the present application;

fig. 12a is a flowchart of a state change trigger of a third communication device according to an embodiment of the present application;

fig. 13 is a flowchart of a state change trigger of a fourth communication device according to an embodiment of the present application;

fig. 14 is a flowchart of a state change trigger of a fifth communication device according to an embodiment of the present application;

fig. 14a is a flowchart of a sixth method for changing a state of a communication device according to an embodiment of the present application;

Fig. 15 is a flowchart of a state change trigger of a seventh communication device according to an embodiment of the present application;

fig. 16 is a flowchart of a state change trigger of an eighth communications device according to an embodiment of the present application;

fig. 17 is a flowchart of a state change trigger of a ninth communications device according to an embodiment of the present application;

fig. 17a is a flowchart of a state change trigger of a tenth communication device according to an embodiment of the present application;

fig. 17b is a flowchart of a state change trigger of an eleventh communication device according to an embodiment of the present application;

fig. 18 is a flowchart of a first configuration of a wireless interface according to an embodiment of the present application;

fig. 19 is a flow chart of a second configuration of a wireless interface provided by an embodiment of the present application;

fig. 20 is a flowchart of a first method for obtaining communication configuration information according to an embodiment of the present disclosure;

fig. 21 is a flowchart of a second method for obtaining communication configuration information according to an embodiment of the present application;

fig. 22 is a flowchart of a third method for obtaining communication configuration information according to an embodiment of the present application;

fig. 23 is a flowchart of a fourth method for obtaining communication configuration information according to an embodiment of the present application;

fig. 24 is a flowchart of a fifth method for obtaining communication configuration information according to an embodiment of the present application;

Fig. 25 is a flowchart of a sixth method for obtaining communication configuration information according to an embodiment of the present application;

fig. 26 is a flowchart of a seventh method for obtaining communication configuration information according to an embodiment of the present application;

fig. 26a is a flowchart of a network device acquiring IAB related information according to an embodiment of the present application;

fig. 27 is a block diagram of a communication apparatus according to an embodiment of the present application;

fig. 28 is a block diagram of a communication device according to an embodiment of the present application;

fig. 29 is a block diagram of a network device according to an embodiment of the present application.

Detailed Description

The application provides a communication method and a communication device, which are used for improving the efficiency of service transmission. The method and the device are based on the same inventive concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

In the solution provided in the embodiment of the present application, the communication device in the state of the standby communication device may take over the transmission task of the corresponding primary communication device at any time, and continue to perform service transmission. Therefore, the communication system can ensure the continuity of service transmission through the state change of the main communication equipment and the standby communication equipment of the communication equipment, and can avoid the long-time operation work of the communication equipment so as to prolong the service life of the communication equipment, further improve the transmission efficiency and improve the user experience.

Hereinafter, some terms in the present application are explained to be understood by those skilled in the art.

1) And the network equipment is equipment for accessing the terminal equipment to a wireless network in the communication system. The network device serves as a node in a radio access network, which may also be referred to as a base station, and may also be referred to as a Radio Access Network (RAN) node (or device).

Currently, some examples of network devices are: a gbb, a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), an Access Point (AP), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, HNB), or a Base Band Unit (BBU), an Enterprise LTE Discrete narrowband Aggregation (LTE-Discrete Aggregation, LTE-DSA) base station, and the like.

In addition, in a network structure, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node. The structure separates the protocol layers of the eNB in a Long Term Evolution (LTE) system, the functions of part of the protocol layers are controlled in the CU in a centralized way, the functions of the rest part or all of the protocol layers are distributed in the DU, and the CU controls the DU in a centralized way.

2) A terminal device is a device that provides voice and/or data connectivity to a user. The terminal device may also be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and so on.

For example, the terminal device may be a handheld device, a vehicle-mounted device, or the like having a wireless connection function. Currently, some examples of terminal devices are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), a point of sale (POS), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), the system comprises a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in a smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in a smart city (smart city), a wireless terminal in a smart home (smart home), various smart meters (smart water meter, smart electric meter and smart gas meter), eLTE-DSA UE, equipment with access and return Integration (IAB) capability and the like.

3) The relay device has a bridging function and can establish wireless connection with a terminal device, a network device or other relay devices. Under the condition that the physical distance between the terminal equipment and the network equipment is large or an obstacle exists, the terminal equipment cannot be directly connected with the network equipment, and then at least one relay equipment can be deployed between the terminal equipment and the network equipment to form multi-hop communication, so that wireless connection between the terminal equipment and the network equipment is realized.

The physical form of the relay device may be a terminal device, a network bridge, a network device (e.g., a micro base station, an AP, etc.), an access backhaul integrated IAB node (node), a Customer Premises Equipment (CPE), a device with an access backhaul integration capability, and the like, which is not limited in this application.

4) And the communication device are the general names of the terminal device and the relay device for convenience of description. Therefore, in the embodiment of the present application, the first communication device, the second communication device, and the like specifically mentioned may be a terminal device or a relay device, and the present application is not limited to this.

5) The core network device is a device in charge of control and management functions such as mobility management and path management in the core network. Optionally, the core network device may be a Mobility Management Entity (MME), or a Control Plane Function (CPF) entity.

6) The parent node of the communication device is the communication device accessed by the communication device in the wireless connection of the multi-hop communication.

7) The child node of the communication equipment is the communication equipment which is accessed to the communication equipment in the wireless connection of the multi-hop communication.

8) A primary communication device in a state in which it is intended to turn on a particular function, or is designated to turn on a particular function, or is intended to activate a particular function, or is activated, or is designated to activate a particular function. For example: if the communication device is a device with relay capability, the primary communication device refers to a device that intentionally turns on the relay function, or has turned on the relay function, or is designated to turn on the relay function, or intentionally activates the relay function, or has activated the relay function, or is designated to activate the relay function. Another example is: if the communication device is a device with IAB capability, the primary communication device refers to a device which is intentionally required to turn on the access backhaul integrated IAB function, or to turn on the IAB function, or is designated to turn on the IAB function, or is intentionally required to activate the IAB function, or is designated to activate the IAB function. For example, the primary communication device is an IAB node.

9) A communication device in a state in which a specific function is unintentionally turned on, or a specific function is intentionally turned off, or a specific function is designated to be turned off, or a specific function is not turned on, or a specific function is not activated, or a specific function is unintentionally activated, or a specific function is intentionally deactivated, or a specific function is deactivated. For example: if the communication device is a device with relay capability, the communication device refers to a device which is not intended to turn on the relay function, or is intended to turn off the relay function, or has turned off the relay function, or is designated to turn off the relay function, or is not turned on the relay function, or is not activated the relay function, or is intended to activate the relay function, or is intended to deactivate the relay function, or has deactivated the relay function. For example: if the communication device is a device with an IAB capability, the standby communication device refers to a device which unwittingly opens the access backhaul integrated IAB function, or intentionally closes the IAB function, or has closed the IAB function, or is designated to close the IAB function, or unwittingly activates the IAB function, or intentionally deactivates the IAB function, or has deactivated the IAB function, or has not opened the IAB function, or has not activated the IAB function. For example, the standby communication device is a UE or an lte-DSA UE.

In addition, it is to be understood that the terms first, second, etc. in the description of the present application are used for distinguishing between the descriptions and not necessarily for describing a sequential or chronological order.

The embodiments of the present application will be described below with reference to the drawings.

Fig. 1 shows an architecture of a possible communication system to which the communication method provided in the embodiment of the present application is applicable. Referring to fig. 1, the communication system includes: access networks, core networks, and Data Networks (DNs).

And the access network provides wireless access related services for the terminal equipment, so that the terminal equipment is converged and accessed to the core network, and finally, the connection with the data network is realized. The wireless access network comprises network equipment and relay equipment.

Before the terminal device realizes the service, the terminal device needs to access the network device and establish wireless connection with the network device, so that data transmission between the terminal device and the network device is realized, and the network device provides wireless access service for the terminal device.

Optionally, when the terminal device is located within a coverage area of the network device and the signal quality of the signal of the network device received by the terminal device is strong, the terminal device may directly establish a wireless connection with the network device, such as the terminal device a shown in fig. 1.

Optionally, when the terminal device is not in the coverage of the network device, or the terminal device is at the edge of the coverage of the network device (that is, the signal quality of the signal of the network device received by the terminal device is poor), the terminal device may establish a wireless connection with the network device through one or more relay devices to form a multi-hop communication, such as terminal device b and terminal device c shown in fig. 1.

The core network realizes the functions of session management, access and mobility management, policy control and the like through the core network equipment, and forwards user plane data of the terminal equipment.

The DN, which provides a Service for the terminal device by data transmission with the terminal device, may be a PDN network, such as the Internet (Internet), an IP Multimedia Service (IMS) network, a data network dedicated to some applications, and the like.

In the embodiment of the application, the continuity and the efficiency of the service transmission of the terminal equipment are ensured. In actual network deployment, the communication system may perform dual deployment on some communication devices with less mobile or fixed locations, wherein one of the communication devices serves as a primary communication device and the other communication device serves as a backup communication device. Such as terminal device a, terminal device c, and respective relay devices in fig. 1. In the service transmission process, the network device, each communication device, and the core network device in the communication system may change or configure the state of the active/standby communication device according to different service requirements or configuration requirements, or according to the operating condition of the primary communication device at a certain node in the wireless connection.

In addition, it should be noted that the active/standby communication devices may perform communication interaction through physical connection (e.g., network cable, serial port cable, etc.) or wireless connection. Therefore, the standby communication equipment can monitor the operation state of the main communication equipment, so that the main-standby switching can be rapidly carried out when the operation state of the main communication equipment is abnormal. Optionally, the standby communication device may monitor the operating state of the main communication device through a heartbeat mechanism.

In addition, the main communication device may also back up communication configuration information used during service transmission to the standby communication device, so that when the main/standby switching occurs, the standby communication device may perform configuration through the stored communication configuration information, which may reduce a time delay caused by transmission of the communication configuration information through a network device or an upper layer relay device, and quickly recover wireless connection.

It should be further noted that the communication system shown in fig. 1 is taken as an example, and does not limit the communication system to which the method provided in the embodiment of the present application is applicable. The embodiments of the present application can also be applied to various types and systems of communication systems, for example: fifth generation (The 5)^thGeneration, 5G) communication system, Long Term Evolution (LTE) communication system, vehicle to everything (V2X), Long Term Evolution-vehicle networking (LTE-vehicle, LTE-V), vehicle to vehicle (V2V), vehicle networking, Machine Type Communication (MTC), internet of things (IoT), Long Term Evolution-Machine to Machine (LTE-Machine to Machine, LTE-M), Machine to Machine (M2M), internet of things, LTE discrete narrowband aggregation (LTE discrete narrowband aggregation, LTE-DSA) system, etc., which are not limited in the embodiments of the present application.

In order to implement the state switching of the primary communication device and/or the standby communication device in the communication system shown in fig. 1, so as to ensure the efficiency of service transmission in the communication system, an embodiment of the present application provides a communication method. The method mainly comprises the following steps: the method comprises the following steps of accessing a network flow by the communication equipment, initializing a state of the communication equipment and changing the state of the communication equipment. The following description will be given taking as an example two communication apparatuses, a first communication apparatus and a second communication apparatus, disposed at the same position. In addition, for convenience of description, a parent node of the first communication device and/or the second communication device is referred to as a third communication device.

The following describes the procedure of accessing the network by the communication device.

In order to ensure that the first communication device and the second communication device can realize state switching and ensure that the wireless connection can be successfully established, the first communication device and the second communication device need to access the same cell.

Optionally, when the first communication device and the second communication device establish a connection with the network device through a third communication device, the cell is a cell managed by the third communication device; when the first communication device and the second communication device establish a connection directly with the network device, the cell is a cell managed by the network device.

Optionally, the first communication device and the second communication device may access the same cell, but are not limited to accessing the same cell through the following implementation manners.

The implementation mode is as follows:

the first communication device and the second communication device are in communication connection, and communication interaction can be carried out. After one of the first communication device and the second communication device successfully accesses the cell, sending the cell information of the cell to the other communication device through the communication connection; another communication device accesses the cell through the cell information.

The implementation mode two is as follows:

setting cell information of accessible cells in the first communication device and the second communication device respectively, wherein the cell information set in the two communication devices is the same. In this way, the first communication device and the second communication device can access the same cell.

The implementation mode is three:

adding cell information for accessing the main and standby communication devices in a system message broadcasted by the network device or the third communication device; the first communication device and the second communication device may access the same cell according to a system message.

Optionally, in each of the foregoing implementations, the cell information may include: cell identification, frequency point information used by the cell, identification of communication equipment for managing the cell, and the like.

The implementation mode is four:

after any one of two devices (i.e., a first communication device and a second communication device) paired with each other acquires cell information of a cell accessed by another communication device paired with the communication device, if it is determined that the another communication device paired with the communication device deploys a unified cell or a sub-cell with the cell accessed by the communication device according to the cell information, the communication device initiates an RRC connection release procedure to release a current RRC connection, and re-accesses the cell or the sub-cell accessed by the another communication device paired with the communication device according to the cell information.

For example, after the first communication device obtains cell information of a cell to which a pairing device (i.e., the second communication device) is accessed, if the first communication device determines, according to the cell information, that the cells to which the first communication device and the second communication device are accessed are not the same cell or sub-cell, the first communication device sends an RRC connection release request to a network device, where the RRC connection release request is used to request the network device to release an RRC connection of the first communication device, and after the RRC connection is released, the first communication device accesses the cell/sub-cell to which the pairing device is accessed according to the cell information. FIG. 1a depicts one example of a fourth implementation.

The implementation mode is five:

any one of two communication devices (namely, a first communication device and a second communication device) paired with each other acquires cell information of a cell accessed by the other communication device paired with the communication device, and then reports the cell information to a network device, and when the network device determines that the cells or sub-cells accessed by the two communication devices are inconsistent according to the cell information accessed by the communication device and the cell information accessed by the other communication device paired with the communication device, the network device initiates an RRC connection release process to release the RRC connection of the communication device, so that the communication device accesses the cell or sub-cell accessed by the other communication device paired with the communication device.

For example, after obtaining the cell information of the cell to which the second communication device accesses, the first communication device reports the cell information to the network device, and the network device may determine whether to initiate an RRC connection release procedure to the first communication device according to the information. Wherein the second communication device is a pairing device of the first communication device. FIG. 1b depicts one example of an implementation five.

Optionally, the first communication device acquires cell information of a cell to which the second communication device accesses, where the cell information of the cell to which the second communication device accesses may be sent to the first communication device by the second communication device through a communication connection between the second communication device and the first communication device.

In a fourth implementation manner or a fifth implementation manner, the cell information may include any one or a combination of the following: cell identification, frequency point information used by the cell, sub-cell identification, frequency point information used by the sub-cell, and identification of communication equipment managing the cell. And the sub-cell is a cell managed by the access return integrated node or the relay equipment.

Optionally, the first communication device and the second communication device may access the network device or the third communication device in a random access manner, and establish Radio Resource Control (RRC) connection with the network device.

The following example is provided to specifically describe a process of accessing a network by a communication device.

Example 1: in a case where the first communication device and the second communication device access the same cell managed by the third communication device in the above implementation manner, a network access flow of the communication device is shown in fig. 2, and specifically includes the following steps:

s201: and the first communication equipment is accessed to the third communication equipment through a random access process.

Before executing the random access procedure, the first communication device searches a cell managed by the third communication device through a network searching process. Then the first communication device receives the system message broadcasted by the third communication device to obtain the random access configuration information of the cell contained in the system message, thereby realizing the random access process through the random access configuration information of the cell.

S202: the first communication device sends a first RRC connection request (RRC connection request) to the third communication device, requesting to establish an RRC connection.

S203: and the third communication equipment sends a second RRC connection request to the network equipment to request the establishment of RRC connection for the first communication equipment.

Optionally, when the third communication device accesses a network device through another communication device, in step S203, the third communication device sends the second RRC connection request to the network device in a forwarding manner of the other communication device.

S204: and after receiving the second RRC connection request, the network device sends a first RRC connection setup (RRC connection setup) to the third communication device.

Optionally, when the third communication device accesses a network device through another communication device, in step S204, the network device also needs to send the first RRC connection setting to the third communication device in a forwarding manner through another communication device.

S205: and after receiving the first RRC connection setting, the third communication device sends the second RRC connection setting to the first communication device.

S206: and after receiving the second RRC connection setup, the first communication device sends an RRC connection setup complete (RRC connection setup complete) to the network device.

Through the above steps S201 to S206, the first communication device successfully establishes the RRC connection with the network device, and can perform data transmission with the network device.

Optionally, S202 may be performed in the process of the first communication device performing S201, for example, the first communication device transmits the RRC connection request when transmitting a scheduled transmission message (also referred to as message 3(message3, msg 3)).

S207: the first communication device sends the cell information of the accessed cell to the second communication device through communication connection between the first communication device and the second communication device.

S208: and the second communication equipment selects to access the third communication equipment according to the received cell information.

Similarly, the second communication device successfully establishes the RRC connection with the network device through S209 to S214, and for a specific description, reference may be made to the description of S201 to S206, which is not described herein again.

It should be further noted that, when the first communication device and the second communication device are relay devices, after the first communication device or the second communication device in a state of a master communication device successfully establishes an RRC connection with the network device, a synchronization signal/system message may be broadcast, so that another communication device or a terminal device accesses the first communication device.

Example 2, when the first communication device and the second communication device directly access the network device, a specific procedure may also refer to fig. 2. The first communication device and the second communication device access the network device through a random access process; and in the process that the first communication equipment and the second communication equipment respectively establish RRC connection with the network equipment, information forwarding is not required to be carried out through third communication equipment.

In order to ensure the validity of the wireless link between the communication device and the network device, the two communication devices and the network device deployed at the same position need to determine the states of the two communication devices, so that the network device configures the wireless interfaces of the two communication devices according to the states of the first communication device and the second communication device.

Therefore, in both the state initialization process of the communication device and the state change process of the communication device, the state of each communication device needs to be synchronously saved on the communication device side and the network device.

Optionally, when the first communication device and the second communication device establish a connection with the network device through a third communication device, the third communication device may also store the states of the two communication devices synchronously.

The following describes a state initialization procedure of the communication apparatus.

In the embodiment of the present application, the communication system shown in fig. 1 may initialize the states of the first communication device and the second communication device by using the following implementation manners, but is not limited to the following implementation manners. For convenience of description, in the following implementation manners, a state in which the first communication device is initialized is taken as a main communication device, and a state in which the second communication device is initialized is taken as a standby communication device.

The implementation mode is as follows: and the first communication equipment and/or the second communication equipment report the state information to the network equipment.

Example 1: and under the condition that the first communication equipment and the second communication equipment establish wireless connection with network equipment by accessing a third communication equipment. Referring to fig. 3, the state initialization process of the communication device specifically includes:

s301: after accessing the third communication device, the first communication device sends first state information to the third communication device, where the first state information is used to notify: the state of the first communication device is a master communication device.

Optionally, the first communication device may send the first status information to the third communication device by:

The first method is as follows: the first communication device sends an identifier of the first communication device to the network device, wherein the identifier of the first communication device includes an indication field, and the indication field is used for indicating that the state of the first communication device is a master communication device.

Optionally, in this embodiment of the application, the identifiers of the first communication device and the second communication device may be preset and stored in the module, or configured by an application layer. For example, the identifier may be an International Mobile Equipment Identity (IMEI), or an access backhaul integrated node identity (IAB node identity), or other fixed identifier that may uniquely identify the communication device.

Optionally, the identifiers of the first communication device and the second communication device may also be preset and stored in a Subscriber Identity Module (SIM) or an embedded subscriber identity module (eSIM). For example, the identifier may be an International Mobile Subscriber Identity (IMSI), or an access backhaul integrated node identifier, or other fixed identifier that may uniquely identify the user of the communication device.

Optionally, the set rule is met between the identifiers of the two dual-deployed communication devices. Alternatively, the setting rule may be protocol-specified or negotiated between communication devices in the communication system.

For example, the set field (e.g., N bits high) of the identifier of the first communication device and the identifier of the second communication device are the same, and the indication field (e.g., M bits low) is different. Wherein M, N is a positive integer and is a fixed value. Of course, the indication fields included in the identifiers of the different communication devices in the initial state, which is the master communication device, are generally the same, and the indication fields included in the identifiers of the different communication devices in the initial state, which is the standby communication device, are also the same.

For example, the identifier of communication device 1 is AAA111, the identifier of communication device 2 is AAA000, the identifier of communication device 3 is BBB111, and the identifier of communication device 4 is BBB 000. By the identification of each communication device, the communication device 1 and the communication device 3 are main communication devices, the communication device 2 and the communication device 4 are standby communication devices, the communication device 1 corresponds to the communication device 2, and the communication device 3 corresponds to the communication device 4.

As another example, a particular mathematical relationship is satisfied between a number representing the identity of the first communication device and a number representing the identity of the second communication device.

In short, any device in the communication system may determine, according to the identifier of one of the communication devices and the setting rule, the identifier of the active/standby communication device corresponding to the identifier of the communication device.

The second method comprises the following steps: the first communication device sends indication information of a second communication device to the network device, wherein the indication information of the second communication device is used for indicating that a standby communication device corresponding to the first communication device is the second communication device.

By this way, the network device can know the state of the first communication device through the indication information of the second communication device, and the standby communication device corresponding to the first communication device is the second communication device.

The third method comprises the following steps: the first communication device sends a status indication to the network device, wherein the status indication is used for indicating that the status of the first communication device is a master communication device.

Alternatively, the status indication may be a primary communication device status indication, i.e. only communication devices with an initial status as primary communication device may transmit the status indication.

Optionally, the state indication may indicate different states by taking different values. For example, when the status indication value is 1, the status indication is used to indicate that the status is the primary communication device, and when the status indication value is 0, the status indication is used to indicate that the status is the secondary communication device.

It should be noted that, in the third mode, the network device may determine, through various conventional techniques, that the status indication is sent by the first communication device. For example, the status indication includes indication information of the first communication device.

The method is as follows: the first communication device sends an identifier and a status indication of the first communication device to the network device, where the status indication is used to indicate that the status is a master communication device, and the identifier of the first communication device is used to notify: the status indicated by the status indication is a status of the first communication device.

The fifth mode is as follows: the first communication device sends a state indication and indication information of a second communication device to the network device, wherein the state indication is used for indicating that the state of the first communication device is a main communication device, and the indication information of the second communication device is used for indicating that a standby communication device corresponding to the first communication device is the second communication device.

In the above aspect, the indication information of any one of the communication apparatuses (of the first communication apparatus or the second communication apparatus) is any one of: the identification of the communication equipment, the network identification of the communication equipment, the user identification of the communication equipment and the access return integrated node identification code of the communication equipment.

Optionally, the network identifier of the communication device is a temporary identifier allocated by a network when the communication device accesses the network, for example, a cell-radio network temporary identifier (C-RNTI).

Optionally, the identifier of the communication device is an access backhaul integrated node identifier, IMEI, or other fixed identifier that can uniquely identify the communication device.

Optionally, the user identifier of the communication device is an access backhaul integrated node identifier, IMSI or other fixed identifier that can uniquely identify the communication device.

S302: and the third communication equipment sends the first state information to the network equipment.

S303: and if the network equipment determines that the state of the first communication equipment is not locally stored, determining that the state of the first communication equipment is the main communication equipment according to the first state information.

S304: after accessing the third communication device, the second communication device sends second state information to the third communication device, where the second state information is used to notify: the state of the second communication device is standby communication device.

Optionally, similar to the first communication device sending the first status information, the second communication device may also send the second status information to the third communication device in five ways.

The first method is as follows: and the second communication equipment sends the identifier of the second communication equipment to the network equipment, wherein the identifier of the second communication equipment comprises an indication field, and the indication field is used for indicating that the state of the second communication equipment is standby communication equipment.

The second method comprises the following steps: the second communication device sends indication information of a first communication device to the network device, wherein the indication information of the first communication device is used for indicating that a main communication device corresponding to the second communication device is the first communication device.

The third method comprises the following steps: and the second communication equipment sends a state indication to the network equipment, wherein the state indication is used for indicating that the state of the second communication equipment is standby communication equipment.

Alternatively, the status indication may be a standby communication device status indication, that is, only the communication device whose initial status is the standby communication device may transmit the status indication.

Optionally, the state indication may indicate different states by taking different values.

It should be noted that, in the third mode, the network device may determine, through various conventional techniques, that the status indication is sent by the second communication device. For example, the status indication includes indication information of the second communication device.

The method is as follows: the second communication device sends an identifier and a status indication of the second communication device to the network device, where the status indication is used to indicate that the status is a standby communication device, and the identifier of the second communication device is used to notify: the status indicated by the status indication is a status of the second communication device.

The fifth mode is as follows: the second communication device sends a status indication and indication information of the first communication device to the network device, wherein the status indication is used for indicating that the status of the second communication device is a standby communication device, and the indication information of the first communication device is used for indicating that a primary communication device corresponding to the second communication device is the first communication device.

S305: and the third communication equipment sends the second state information to the network equipment.

S306: and if the network equipment determines that the state of the second communication equipment is not locally stored, determining that the state of the second communication equipment is the standby communication equipment according to the second state information.

Optionally, the network device maintains communication device state configuration information, where the communication device state configuration information includes states of a plurality of communication devices, and the network device may retrieve the first communication device and/or the second communication device from the communication device state configuration information, so as to determine whether to save the states of the first communication device and/or the second communication device.

Optionally, the third communication device may determine the state of the first communication device and/or the second communication device through S307a and S307b, or S308.

S307 a: after the third communication device receives the first state information, if the third communication device determines that the state of the first communication device is not locally stored, the third communication device determines that the state of the first communication device is a main communication device according to the first state information.

S307 b: and after the third communication equipment receives the first state information, if the state of the second communication equipment is not locally stored, determining that the state of the second communication equipment is the standby communication equipment according to the second state information.

S308: the network device sends the first state information/the second state information to the third communication device; or, the network device sends communication device state configuration information to the third communication device. The state of the first communication device in the communication device state configuration information is a main communication device, and the state of the second communication device is a standby communication device.

Example 2: when the first communication device and the second communication device are directly connected to the network device, the detailed flow of the state initialization process of the communication device may also refer to fig. 3. In contrast, the first communication device and the second communication device directly send status information to the network device.

Example 3: when the first communication device and the second communication device establish wireless connection with a network device by accessing a third communication device, referring to fig. 4, a specific process of a state initialization procedure of the communication device includes:

s401: after the first communication device accesses the third communication device, sending state information to the network device through the third communication device, where the state information is used to notify: the state of the first communication device is a master communication device.

S402: if the network device determines that the state of the first communication device is not locally stored, the network device determines that the state of the first communication device is a main communication device according to the state information, and determines that a standby communication device corresponding to the first communication device is a second communication device according to a preset corresponding relation between the main communication device and the standby communication device.

Optionally, the corresponding relationship between the main and standby communication devices is as follows: and the setting rule is met between the identifier of the first communication device and the identifier of the second communication device. The setting rule may be protocol-specified or negotiated between the respective communication devices in the communication system. The status information includes an identifier of the first communication device, so that the network device can determine an identifier of a second communication device according to the identifier of the first communication device, thereby determining that the standby communication device corresponding to the first communication device is the second communication device.

For example, the setting rule is that the first 3 bits of the identifier of the primary communication device and the identifier of the secondary communication device are the same, the second 1 bits are different, the state of the communication device whose value of the second 1 bit is 0 is the secondary communication device, and the state of the communication device whose value of the second 1 bit is 1 is the primary communication device. When the identification of the first communication device is XXX1, the network device may determine that the identification of the standby communication device corresponding to the first communication device is XXX 0.

Optionally, the correspondence between the active and standby communication devices is stored in the network device or received from a core network device. The primary-standby communication device correspondence includes the indication information of the first communication device and the indication information of the second communication device, for example, as shown in table 1 or table 2. The indication information of any communication device may be an identifier of the communication device, a network identifier of the communication device, a user identifier of the communication device, and the like.

TABLE 1

Main and standby communication equipment corresponding relation identification	Indication information of communication equipment	Indication information of communication equipment
0	Indication information of a first communication device	Indication information of a second communication device
1	……	……

TABLE 2

Main and standby communication equipment corresponding relation identification	Indication information of communication equipment
0	Indication information of a first communication device
0	Indication information of a second communication device
……	……

S403: and the network equipment sends a state indication to the second communication equipment through the third communication equipment, wherein the state indication is used for indicating that the state of the second communication equipment is standby communication equipment.

Example 4 is also performed when the first communication device and the second communication device establish a wireless connection with a network device by accessing a third communication device, as in example 3. Similar to the example 3 procedure, except that the second communication device reports its own status. Referring to fig. 5, the specific process includes:

s501: after the second communication device accesses the third communication device, sending state information to the network device through the third communication device, where the state information is used to notify: the state of the second communication device is standby communication device.

S502: if the network device determines that the state of the second communication device is not locally stored, determining that the state of the second communication device is a standby communication device according to the state information, and determining that a main communication device corresponding to the second communication device is a first communication device according to a preset corresponding relation between the standby communication device and the main communication device.

The correspondence between the active and standby communication devices may refer to the specific description in example 3, and is not described herein again.

S503: and the network equipment sends a state indication to the first communication equipment through the third communication equipment, wherein the state indication is used for indicating that the state of the first communication equipment is a main communication equipment.

Examples 5 and 6 are both performed with the first communication device and the second communication device directly connected to the network device, as shown in fig. 6 and 7, respectively. Different from fig. 4 and fig. 5, the message interaction between the first communication device, the second communication device and the network device does not need to be forwarded through the third communication device, so that the specific process may refer to the description of the example shown in fig. 5 and fig. 6, and is not described herein again.

The implementation mode two is as follows: the first communication device transmits request information for requesting to become the master communication device to the network device.

Example 1: in the case where the first communication device is directly connected to the network device, refer to fig. 8. In this example, the first communication device is described as an example of an IAB-capable communication device. The process of the first communication device requesting to become the master communication device specifically includes:

S801: the first communication device sends request information to the network device, wherein the request information is used for requesting to start or activate an IAB function.

Optionally, the request message includes an IAB node identifier of the first communication device.

Optionally, the request message includes an IAB node identifier and/or a C-RNTI of the second communication device. Optionally, the second communication device and the first communication device have a pairing relationship or an association relationship or a pairing relationship or a corresponding relationship between the master and slave communication devices or belong to the same device group.

Optionally, the request information is an access return integrated connection request (IAB connection request) message, an access return integrated activation request (IAB activation request) message, an access return integrated start request (IAB enable request), an access return integrated grant request (IAB permission request), or an access return integrated function activation request message (IAB function activation request, or IAB function activation request).

Optionally, before S801 or after S801, the network device may send an inquiry instruction to the first communication device, where the inquiry instruction is used to instruct the first communication device to send pairing status information to the network device. And after receiving the query instruction, the first communication device sends pairing state information to the network device.

Optionally, the pairing status information includes one or more of the following: the communication device comprises an identification of the communication device in pairing relation with the first communication device, an IAB node identification code of the communication device in pairing relation with the first communication device, a C-RNTI of the communication device in pairing relation with the first communication device, and a status indication of the communication device in pairing relation with the first communication device. Wherein the status indication is used for indicating that the status of the communication device which has the pairing relation with the first communication device is a standby communication device or a primary communication device.

S802 a: and if the first communication equipment receives the configuration information sent by the network equipment, the first communication equipment starts or activates an IAB function.

The configuration information is used for configuring the first communication device to start or activate an IAB function, or for configuring/reconfiguring IAB parameters of the first communication device. Optionally, the configuration information may be an access backhaul integrated configuration (IAB configuration) message, an access backhaul integrated connection configuration (IAB configuration) message, an access backhaul integrated establishment (IAB setup) message, an access backhaul integrated connection setup (IAB setup) message, or an access backhaul integrated function activation (IAB function activation) message.

Optionally, after receiving the configuration information sent by the network device, the first communication device may send an access backhaul integrated function activation complete (IAB function activation complete) message to the network device.

In this case, the state of the first communication device is a master communication device. Optionally, after sending the configuration information to the first communication device, the network device may further send a status indication to the second communication device, so as to notify that the second communication device is a standby communication device, so that the second communication device does not initiate a process of becoming a primary communication device any more.

S802 b: and if the first communication equipment receives the rejection information sent by the network equipment, the first communication equipment does not start or activate the IAB function. Wherein the rejection information is used to reject the request of the first communication device to turn on or activate the IAB function.

Optionally, after receiving the rejection information, the first communication device may send a request information request again to become a master communication device; or the first communication device determines that the first communication device is in a standby state after receiving the rejection information, and the network device sends configuration information to the second communication device after sending the rejection information to the first communication device to indicate that the second communication device becomes a primary communication device; or the first communication device informs the second communication device through communication connection with the second communication device: the first communication device fails to request to become the primary communication device, so that the second communication device requests to become the primary communication device through the above flow.

Example 2: a process of the first communication device requesting to become a master communication device when the first communication device establishes a wireless connection with the network device by accessing a third communication device may also be as shown in fig. 8, except that information interaction between the first communication device and the network device is forwarded by the third communication device.

The implementation mode is three: the network device sets the states of the first communication device and the second communication device, and notifies the respective states of the first communication device and the second communication device. In this implementation, the network device maintains communication device state configuration information, where the state of the first communication device and/or the state of the second communication device are stored in the communication device state configuration information.

Example 1: after the first communication device and the second communication device access the network device through the third communication device, the network device sends a first status indication and a second status indication to the first communication device and the second communication device through the third communication device according to the stored communication device status configuration information. The specific process can be seen in fig. 9.

The first status indication is used for indicating that the status of the first communication device is a main communication device, and the second status indication is used for indicating that the status of the second communication device is a standby communication device.

Example 2: after the first communication device and the second communication device access the network device through the third communication device, the network device sends communication device state configuration information to the first communication device and the second communication device through the third communication device, respectively. The specific flow can also be seen in fig. 9, where the first status indication and the second status indication in the figure are replaced by the communication device status configuration information at different times.

Example 3: after the first communication device and the second communication device access the network device through the third communication device, the network device sends a first status indication or communication device status configuration information to the third communication device, where the first status indication is used to indicate that the status of the first communication device is a master communication device and/or the status of the second communication device is a slave communication device. And after receiving the first state indication or the communication equipment state configuration information, the third communication equipment sends a second state indication to the first communication equipment and sends a third state indication to the second communication equipment. The specific process can be seen in fig. 10.

The second status indication is used for indicating that the status of the first communication device is a master communication device, and the third status indication is used for indicating that the status of the second communication device is a slave communication device.

Example 4 and example 5: both of them are executed when the first communication device and the second communication device are directly connected to the network device, and specific procedures may also refer to fig. 9 and fig. 10. In contrast, message interaction between the first communication device, the second communication device and the network device does not need to be forwarded through the third communication device.

It should be noted that, in each of the above examples, when the first communication device and the second communication device establish a wireless connection with a network device by accessing a third communication device, the third communication device saves the states of the first communication device and the second communication device when the network device sends information containing or indicating the states of the first communication device and the second communication device to the third communication device.

The implementation mode is four: the core network device sets the states of the first communication device and the second communication device and informs the network device of the states of the first communication device and the second communication device. In this implementation, the core network device maintains communication device state configuration information, where the state of the first communication device and/or the state of the second communication device are stored in the communication device state configuration information. After the network equipment establishes connection with the core network equipment, the core network equipment sends the communication equipment state configuration information to the network equipment; then, the network device notifies the respective states of the first communication device and the second communication device through the third implementation manner. The flow of each example in the fourth implementation may refer to the flow of each example in the third implementation, and is not described herein again.

Optionally, the core network device may carry the communication device state configuration information in an initial context Request (initial context setup Request).

Optionally, in the above example, when any one of the communication devices (the first communication device or the second communication device) performs information interaction with another device, the information includes its identifier. Further, when the information includes or indicates the state of a certain communication device, the information also includes the identification of the communication device.

It should be noted that, in the embodiment of the present application, the state initialization procedure of the communication device may be performed after the communication device accesses the network procedure. Optionally, the information interaction in the state initialization process of the communication device may be implemented in an RRC connection re-establishment process, an RRC connection recovery process, or an RRC connection reconfiguration process. For example, in each of the above implementation manners, when the first communication device or the second communication device sends the state information to the third communication device or the network device, or when the third communication device sends the state information or the communication device state configuration information to the network device, the first communication device or the second communication device may carry the corresponding information in the RRC connection reestablishment request, the RRC connection restoration request, or the RRC connection reconfiguration request. Of course, when any two devices interact with other information in the above implementation manner, the information may also be carried in the RRC connection re-establishment process, the RRC connection recovery process, or information interacted between the two devices in the RRC connection re-establishment process, which is not described herein again in detail.

It should be further noted that, in this embodiment of the present application, the state initialization procedure of the communication device may also be performed during the process of accessing the network by the communication device. Optionally, the information interaction in the state initialization procedure of the communication device may be implemented in the RRC connection establishment process. For example, when the first communication device or the second communication device sends the state information to the third communication device or the network device, or when the third communication device sends the state information or the communication device state configuration information to the network device, the corresponding information may be carried in the RRC connection establishment request.

In addition, optionally, the communication device state configuration information maintained in each device of the communication system may be as shown in table 3 or table 4:

TABLE 3

TABLE 4

The state change process of the communication device specifically includes the following two sub-processes: the state change triggers the sub-process and the configuration sub-process of the radio interface.

The state change trigger sub-flow is described below.

In the embodiment of the present application, the implementation manner of the state change trigger is as follows:

the implementation mode is as follows: triggered by the first communication device being in a master communication device state;

the implementation mode two is as follows: triggered by the second communication device in a standby state;

The implementation mode is three: triggered by the third communication device, which is a parent node of the first communication device and/or the second communication device;

the implementation mode is four: triggered by the network device;

the implementation mode is five: triggered by the core network device.

Optionally, in practical applications, the communication system may be triggered by any of the above implementation manners, or by a combination of any of the implementation manners, which is not limited in this application. It should be noted that, when the communication system is triggered by the implementation manner, the communication system further needs to send a status change instruction to the second communication device to be changed into the primary communication device; when the communication system uses the implementation mode two trigger, the communication system may or may not send a status change instruction to the second communication device to be changed to the master communication device. When the communication system simultaneously adopts the first implementation mode and the second implementation mode for triggering, the communication system does not need to send a state change instruction to the first communication equipment and the second communication equipment.

Various implementations are described below by way of example.

The implementation mode is as follows:

optionally, the first communication device in the state of the primary communication device may trigger the state change when it is monitored that the running state of the first communication device is poor (for example, the hardware temperature reaches a preset value, or the system software version is low and needs to be upgraded urgently), or when the duration time of the state of the primary communication device reaches a preset time.

Example 1: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 11, the state change triggering sub-process specifically includes:

s1101: the first communication device sends a first state change instruction to the network device through the third communication device, wherein the first state change instruction is used for notifying that: the state of the first communication device is changed from the master communication device to the standby communication device.

Optionally, the first status change instruction includes any one or a combination of the following items: the method comprises the steps of identifying a corresponding relation mark of the main and standby communication equipment, an identification of the first communication equipment, a network identification of the first communication equipment, a state indication of the first communication equipment, an identification of the second communication equipment, a network identification of the second communication equipment, a state indication of the second communication equipment and a state change reason indication.

S1102: after receiving the first state change instruction, the network device determines that a standby communication device (before state change) corresponding to the first communication device is the second communication device, changes the states of the first communication device and the second communication device in the locally maintained communication device state configuration information, and then sends a second state change instruction to the second communication device through the third communication device, wherein the second state change instruction is used for notifying that the state of the second communication device is changed from the standby communication device to the main communication device.

Optionally, when the first state change instruction does not include the identifier of the second communication device and the network identifier, the network device may determine, through a primary-secondary communication device correspondence relationship, that the secondary communication device corresponding to the first communication device is the second communication device, and the network device may also determine, through content in the first state change instruction, that the secondary communication device corresponding to the first communication device is the second communication device.

For example, the network device may determine, through a primary/secondary communication device correspondence identifier, an identifier of the first communication device, a network identifier of the first communication device, and the like, a target primary/secondary communication device correspondence including the first communication device, and then another communication device (the second communication device) included in the target primary/secondary communication device correspondence is a secondary communication device corresponding to the first communication device.

Optionally, in this example 1, when the third communication device also maintains the communication device state configuration information, the third communication device may change the states of the first communication device and the second communication device in the locally maintained communication device state configuration information in the manner of the network device when receiving the first state change instruction. When the third communication device does not perform the above process, but does not process the first status change instruction and directly forwards the first status change instruction to the network device, the network device may further instruct, through S1103a or S1103b, the third communication device to change the statuses of the first communication device and the second communication device in the maintained communication device status configuration information.

S1103 a: the network device sends a third status change instruction to the third communication device, where the third status change instruction is used to notify: the state of the first communication equipment is changed into the standby communication equipment from the main communication equipment, and/or the state of the second communication equipment is changed into the main communication equipment from the standby communication equipment.

S1103 b: and the network equipment sends the communication equipment state configuration information after the state is updated to the third communication equipment. In the updated communication device state configuration information, the state of the first communication device is a standby communication device, and the state of the second communication device is a primary communication device.

Example 2: in a case where the first communication device and the second communication device are directly connected to the network device. The specific flow of the state change triggering sub-flow can also be seen in fig. 11. In contrast, message interaction between the first communication device, the second communication device and the network device does not need to be forwarded through the third communication device.

Example 3: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 12, the state change triggering sub-process specifically includes:

S1201: the same as S1101, and will not be described again here.

S1202: after receiving the first state change instruction, the network device determines that a standby communication device (before state change) corresponding to the first communication device is the second communication device, and changes the states of the first communication device and the second communication device in the locally maintained communication device state configuration information; and then sending the updated communication equipment state configuration information to the third communication equipment.

S1203: after receiving the updated communication device state configuration information, the third communication device determines that the standby communication device (before state change) corresponding to the first communication device is the second communication device, and then sends the second state change instruction to the second communication device. Wherein the second status change instruction is used to notify that the status of the second communication device is changed from the standby communication device to the primary communication device.

Example 4: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 12a, the state change triggering sub-process specifically includes:

S12a 1: the first communication device sends a first status change request to the network device, where the first status change request is used to request: the state of the first communication device is changed from the master communication device to the standby communication device.

Optionally, the first state change request includes any one or a combination of the following items: the device identifier of the first communication device, the access backhaul integration node identifier of the first communication device, the network identifier of the first communication device, the C-RNTI of the first communication device, the device identifier of the second communication device, the access backhaul integration node identifier of the second communication device, the network identifier of the second communication device, the C-RNTI of the second communication device, the indication of the reason for the change of state, the alignment indication of radio resource configuration, the alignment indication of measurement configuration, the alignment indication of sub-node configuration, and the alignment indication of IAB configuration. Wherein the second communication device is a pairing device of the first communication device, the radio resource configuration alignment indicates whether the radio resource configuration information of the second communication device saved by the first communication device is consistent with the radio resource configuration information saved by the second communication device, the measurement configuration alignment indication is used for indicating whether the measurement configuration information of the second communication device saved by the first communication device is consistent with the measurement configuration information saved by the second communication device, the child node configuration alignment indication is used for indicating whether the child node configuration information of the second communication device saved by the first communication device is consistent with the child node configuration information saved by the second communication device, the IAB configuration alignment indication is used to indicate whether the IAB configuration information of the second communication device saved by the first communication device is consistent with the IAB configuration information saved by the second communication device.

Optionally, the network device sends any one or a combination of the following to the third communication device: the access backhaul integrated node identification code of the first communication device, the network identifier of the first communication device, the C-RNTI of the first communication device, the access backhaul integrated node identification code of the second communication device, the network identifier of the second communication device, the C-RNTI of the second communication device, the indication of the reason for the change of state, the indication of the alignment of radio resource configuration, the indication of the alignment of measurement configuration, the indication of the alignment of subnode configuration, and the indication of the alignment of IAB configuration. Wherein the second communication device is a pairing device of the first communication device, and the third communication device is a parent node of the first communication device or a parent node of the second communication device.

Optionally, the first state change request is a field in an access backhaul integration function deactivation request message, or an access backhaul integration information reporting message.

S12a 2: after receiving the first state change request, the network device sends a first state change instruction to the first communication device, where the first state change instruction is used to notify: the state of the first communication device is changed from the master communication device to the standby communication device.

Optionally, the first state change indication is an access return integrated function deactivation message, an access return integrated deactivation message, or an access return integrated function reconfiguration message, or an access return integrated function reconfiguration field in a reconfiguration message, or an access return integrated reconfiguration field in a reconfiguration message.

S12a 3: and after the first communication equipment receives the first state change instruction, the first communication equipment is changed into standby communication equipment by the main communication equipment.

Optionally, after the first communication device is changed from the primary communication device to the standby communication device, the first communication device sends a first status change completion indication to the network device, where the first status change completion indication is used to notify: the first communication device has been successfully changed from the master communication device to the slave communication device.

Optionally, the first state change completion indication is an access return integration function deactivation completion message, an access return integration deactivation completion message, or an access return integration function reconfiguration completion message, or an access return integration reconfiguration completion message.

Example 5: in a case where the first communication device and the second communication device are directly connected to the network device. See also example 4 for a specific flow of state change trigger sub-flows. In contrast, information interaction between the first communication device, the second communication device and the network device does not need to be forwarded through the third communication device.

The implementation mode two is as follows:

optionally, the second communication device in the state of the standby communication device may trigger the state change when it is monitored that the first communication device operates abnormally, or when the duration of the state of the standby communication device reaches a set duration.

As shown in fig. 13 and fig. 14, similar to the examples in the first implementation manner, the specific flow may refer to the description related to the first implementation manner, and is not described herein again. In contrast, the second communication device sends a first status change instruction to the network device, where the first status change instruction is used to notify: and the state of the second communication equipment is changed from the standby communication equipment to the main communication equipment. The second state change instruction sent by the network device or the third communication device to the first communication device is used for notifying that: the state of the first communication device is changed from the master communication device to the standby communication device.

Optionally, the second communication device in the standby state may be a communication device that is not turned on or does not activate the IAB. Optionally, the second communication device may request to become the master communication device by using the flow shown in fig. 8, that is, the second communication device sends request information to the network device. Wherein the request information is used for requesting to turn on or activate the IAB.

Optionally, the request message includes an IAB node identifier of the second communication device.

Optionally, the request message includes an IAB node identity and/or a C-RNTI of the first communication device.

Optionally, the request information is an access return integration connection request message, an access return integration activation request message, an access return integration start request, or an access return integration permission request.

And when the second communication equipment receives the configuration information sent by the network equipment, the second communication equipment determines that the state of the second communication equipment is changed into the main communication equipment.

Example 1: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 14a, the state change triggering sub-process specifically includes:

s14a 1: the second communication device sends a first status change request to the network device, where the first status change request is used to request: and the state of the second communication equipment is changed from the standby communication equipment to the main communication equipment.

Optionally, the first state change request includes any one or a combination of the following items: the device identifier of the first communication device, the access backhaul integration node identifier of the first communication device, the network identifier of the first communication device, the C-RNTI of the first communication device, the device identifier of the second communication device, the access backhaul integration node identifier of the second communication device, the network identifier of the second communication device, the C-RNTI of the second communication device, the indication of the reason for the change of state, the alignment indication of radio resource configuration, the alignment indication of measurement configuration, the alignment indication of sub-node configuration, and the alignment indication of IAB configuration. Wherein the first communication device is a pairing device of the second communication device, the radio resource configuration alignment indicates whether the radio resource configuration information of the first communication device saved by the second communication device is consistent with the radio resource configuration information saved by the first communication device, the measurement configuration alignment indication is used for indicating whether the measurement configuration information of the first communication device saved by the second communication device is consistent with the measurement configuration information saved by the first communication device, the child node configuration alignment indication is used for indicating whether the child node configuration information of the first communication device saved by the second communication device is consistent with the child node configuration information saved by the first communication device, the IAB configuration alignment indication is used to indicate whether the IAB configuration information of the first communication device saved by the second communication device is consistent with the IAB configuration information saved by the first communication device.

Optionally, the network device sends any one or a combination of the following to the third communication device: the access backhaul integrated node identification code of the first communication device, the network identifier of the first communication device, the C-RNTI of the first communication device, the access backhaul integrated node identification code of the second communication device, the network identifier of the second communication device, the C-RNTI of the second communication device, the indication of the reason for the change of state, the indication of the alignment of radio resource configuration, the indication of the alignment of measurement configuration, the indication of the alignment of subnode configuration, and the indication of the alignment of IAB configuration. Wherein the first communication device is a pairing device of the second communication device, and the third communication device is a parent node of the first communication device or a parent node of the second communication device.

Optionally, the first state change request is an access backhaul integration function activation request message or an access backhaul integration activation request message.

S14a 2: after receiving the first state change request, the network device sends a first state change instruction to the second communication device, where the first state change instruction is used to notify: and the state of the second communication equipment is changed from the standby communication equipment to the main communication equipment.

Optionally, the first state change indication is an access return integrated function activation message, an access return integrated activation message, or an access return integrated function reconfiguration message, or an access return integrated function reconfiguration field in the reconfiguration message, or an access return integrated reconfiguration field in the reconfiguration message.

S14a 3: and after receiving the first state change instruction, the second communication equipment is changed into the main communication equipment by the standby communication equipment.

Optionally, after the second communication device is changed from the standby communication device to the primary communication device, the second communication device sends a first status change completion indication to the network device, where the first status change completion indication is used to notify: the second communication device has been successfully changed from the standby communication device to the primary communication device.

Optionally, the first state change completion indication is an access return integration function activation completion message, an access return integration function reconfiguration completion message, or an access return integration reconfiguration completion message.

Example 2: in a case where the first communication device and the second communication device are directly connected to the network device. See also example 1 for a specific flow of state change trigger sub-flows. In contrast, information interaction between the first communication device, the second communication device and the network device does not need to be forwarded through the third communication device.

The implementation mode is three:

optionally, the third communication device may trigger the state change when monitoring that the communication is abnormal (for example, the number of retransmission times of the service data is greater than a set number), or when determining that the duration of the state of the first communication device is the main communication device reaches a set duration.

Example 1: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 15, the state change triggering sub-process specifically includes:

s1501: after determining that the above-mentioned state change condition is currently satisfied, the third communication device sends a first state change instruction to the network device, where the first state change instruction is used to notify: the state of the first communication equipment is changed from main communication equipment to standby communication equipment, and/or the state of the second communication equipment is changed from standby communication equipment to main communication equipment; or the third communication device changes the states of the first communication device and the second communication device in the communication device state configuration information maintained locally, and then sends the updated communication device state configuration information to the network device.

And after receiving the first state change instruction or the communication device state configuration information updated by the third communication device, the network device also changes the states of the first communication device and the second communication device in the locally maintained communication device state configuration information.

S1502: and the network equipment sends a second state change instruction to the first communication equipment through the third communication equipment. The second state change instruction is used for informing that the state of the first communication equipment is changed from the main communication equipment to the standby communication equipment.

S1503: and the network equipment sends a third state change instruction to the second communication equipment through the third communication equipment. The third status change instruction is used for notifying that the status of the second communication device is changed from the standby communication device to the primary communication device.

The implementation mode is four:

optionally, the network device may trigger the state change when it is determined that the duration that the state of the first communication device is the primary communication device reaches a set duration or after receiving a notification of the state change input by a technician.

Example 1: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 16, the state change triggering sub-process specifically includes:

S1601: after determining that the state change condition is currently satisfied, the network device changes the states of the first communication device and the second communication device in the locally maintained communication device state configuration information, and sends a first state change instruction to the first communication device, where the first state change instruction is used to notify: the state of the first communication device is changed from the master communication device to the standby communication device.

S1602: the network device sends a second status change instruction to the second communication device, where the second status change instruction is used to notify: and the state of the second communication equipment is changed from the standby communication equipment to the main communication equipment.

Optionally, when communication device state configuration information is also maintained in the third communication device, after receiving the first state change instruction and the second state change instruction, the third communication device may change the states of the first communication device and the second communication device in the locally maintained communication device state configuration information. When the third communication device does not execute the above process, but does not process the first status change instruction and the second status change instruction and directly forwards the first status change instruction and the second status change instruction to the first communication device and the second communication device, the network device may further notify the third communication device to change the statuses of the first communication device and the second communication device in the maintained communication device status configuration information through S1603.

S1603: and the network equipment sends the changed state configuration information of the communication equipment maintained by the network equipment to the third communication equipment.

Example 2: in a case where the first communication device and the second communication device are directly connected to the network device. The specific flow of the state change triggering sub-flow can also be seen in fig. 16. In contrast, message interaction between the first communication device, the second communication device and the network device does not need to be forwarded through the third communication device.

Example 3: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 17, the state change triggering sub-process specifically includes:

s1701: and after the network equipment determines that the state change condition is currently met, changing the states of the first communication equipment and the second communication equipment in the locally maintained communication equipment state configuration information. Then, the network device sends a first status change instruction to the third communication device, where the first status change instruction is used to notify: the state of the first communication equipment is changed from main communication equipment to standby communication equipment, and/or the state of the second communication equipment is changed from standby communication equipment to main communication equipment; or the network device sends the updated communication device state configuration information to the third communication device.

S1702: and the third communication equipment sends a second state change instruction to the first communication equipment according to the received first state change instruction or the communication equipment state configuration information updated by the network equipment. The second state change instruction is used for informing that the state of the first communication equipment is changed from the main communication equipment to the standby communication equipment.

S1703: and the third communication equipment sends a third state change instruction to the second communication equipment according to the received first state change instruction or the communication equipment state configuration information updated by the network equipment. The third status change instruction is used for notifying that the status of the second communication device is changed from the standby communication device to the primary communication device.

Example 5: after the network device determines that the state change condition is currently met, the network device sends configuration information to the second communication device, wherein the configuration information is used for configuring the second communication device to start or activate an IAB.

Optionally, the configuration information may be an access backhaul integration configuration message, an access backhaul integration connection configuration message, an access backhaul integration establishment message, or an access backhaul integration connection establishment message.

Optionally, the configuration information includes an IAB activation indication or an IAB on indication.

Example 6: after the network device determines that the state change condition is currently satisfied, the network device sends configuration information to the first communication device, where the configuration information is used to configure the first communication device to turn off or not turn on or deactivate or not activate the IAB.

Optionally, the configuration information may be an access backhaul integration release message or an access backhaul integration connection release message.

Optionally, the configuration information includes an IAB deactivation indication or an IAB shutdown indication.

It should be further noted that, in the above four implementation manners, when the core network device maintains the communication device state configuration information, the network device needs to send a state change instruction to the core network device after determining that the state of the first communication device is changed. Optionally, the state change indication may be carried in a UE context modification indication (UE context modification indication).

Example 7: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 17a, the state change triggering sub-process specifically includes:

S17a 1: the network device sends a first status change instruction to the first communication device, wherein the first status change instruction is used for notifying: the state of the first communication device is changed from the master communication device to the standby communication device.

S17a 2: and after the first communication equipment receives the first state change instruction, the first communication equipment is changed into standby communication equipment by the main communication equipment.

Example 8: in a case where the first communication device and the second communication device are directly connected to the network device. See also example 7 for a specific flow of state change trigger sub-flows. In contrast, information interaction between the first communication device, the second communication device and the network device does not need to be forwarded through the third communication device.

Example 9: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 17b, the state change triggering sub-process specifically includes:

s17b 1: the network device sends a first status change instruction to the second communication device, where the first status change instruction is used to notify: and the state of the second communication equipment is changed from the standby communication equipment to the main communication equipment.

S17b 2: and after receiving the first state change instruction, the second communication equipment is changed into the main communication equipment by the standby communication equipment.

Example 10: in a case where the first communication device and the second communication device are directly connected to the network device. See also example 9 for a specific flow of state change trigger sub-flows. In contrast, information interaction between the first communication device, the second communication device and the network device does not need to be forwarded through the third communication device.

The implementation mode is five:

optionally, the core network device may trigger the state change when it is determined that the duration time that the state of the first communication device is the primary communication device reaches a set duration time, or after receiving a notification of the state change input by a technician.

And after determining that the state change condition is currently met, the core network equipment changes the states of the first communication equipment and the second communication equipment in the locally maintained communication equipment state configuration information. Then, the core network device sends a first status change instruction to the network device, where the first status change instruction is used to notify: the state of the first communication equipment is changed from main communication equipment to standby communication equipment, and/or the state of the second communication equipment is changed from standby communication equipment to main communication equipment; or the core network device sends the updated communication device state configuration information to the network device.

Optionally, the first state change indication may be carried in a UE context modification Request (UE context modification Request).

Subsequently, the network device may notify the respective states of the first communication device and the second communication device according to the received first state change indication or the communication device state configuration information updated by the core network device. Specifically, the network device may notify the respective states of the first communication device and the second communication device through the methods in the examples in the fourth implementation manner, and therefore, the flow of each example in the fifth implementation manner may refer to the flow of each example in the fourth implementation manner, and details are not described here.

Note that, the state change instruction in each example of the above-described respective implementation modes includes any one or a combination of the following: the method comprises the steps of identifying a corresponding relation mark of the main and standby communication equipment, an identification of the first communication equipment, a network identification of the first communication equipment, a state indication of the first communication equipment, an identification of the second communication equipment, a network identification of the second communication equipment, a state indication of the second communication equipment and a state change reason indication.

During or after the status change triggering sub-process is completed, that is, after the network device updates the communication device status configuration information maintained by itself, the communication system may start to execute a wireless interface configuration sub-process, and perform wireless interface configuration on the first communication device and the second communication device, so that the network device may release the wireless connection with the first communication device and establish a wireless connection with the second communication device.

Optionally, in this embodiment of the application, the network device may release the RRC connection with the first communication device through a conventional RRC release procedure. The first communication device may then terminate communication services of the relay cell it manages.

Optionally, the network device may establish an RRC connection with the second communication device through an RRC reconfiguration procedure.

Example 1: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 18, the process of establishing the RRC connection between the network device and the second communication device specifically includes:

s1801: after updating the communication device state configuration information maintained by the network device, the network device updates a routing table, and sends a G1 interface RRC connection reconfiguration (RRC connection reconfiguration) to the third communication device.

S1802: and after receiving the RRC connection reconfiguration of the port G1 sent by the third communication equipment, the third communication equipment updates a routing table and sends the RRC connection reconfiguration of the port Ur to the second communication equipment.

Optionally, the Ur port RRC connection reconfiguration includes routing information.

S1803: and the second communication equipment performs radio interface configuration according to the received Ur port RRC connection reconfiguration, and sends Ur port RRC connection reconfiguration complete (RRC connection reconfiguration complete) to the third communication equipment after the configuration is completed.

In this step, the second communication device performs wireless interface configuration, including: establishing RLC entity and PDCP entity corresponding to DRB, configuring MAC/PHY/adaptation layer, etc.

S1804: and after receiving the completion of the RRC connection reconfiguration of the Ur port, the third communication device sends the completion of the RRC connection reconfiguration of the G1 port to the network device.

S1805: and after receiving the completion of the RRC connection reconfiguration of the G1 port sent by the third communication equipment, the network equipment sends the RRC connection reconfiguration of the G1 port to the second communication equipment.

S1806: and the second communication equipment carries out radio interface configuration according to the received RRC connection reconfiguration of the port G1 sent by the network equipment, and sends the RRC connection reconfiguration completion of the port G1 to the network equipment after the configuration is completed.

In this step, the second communication device performs wireless interface configuration, including: creating a relay cell (i.e. a cell managed by the second communication device), establishing a sub-link side RLC entity, initializing a MAC/PHY/adaptation layer, initializing a Ur port RRC layer, and the like.

In S1803 and S1806 in this example 1, the second communications device needs to obtain the communication configuration information through S1800, and perform wireless interface configuration according to the communication configuration information.

S1800: the second communication device obtains communication configuration information.

Wherein, the communication configuration information includes any one or combination of the following items:

the wireless resource configuration information of the first communication device, the data cached by the first communication device during data transmission, the network identifier of the fourth communication device, the context of the fourth communication device, the QoS information of the fourth communication device, the data radio bearer identifier DRB ID of the fourth communication device, and the wireless resource configuration information of the fourth communication device. Wherein the fourth communication device is a child node of the first communication device or the second communication device.

The data cached when the first communication device performs data transmission may include, but is not limited to, the following: the data cached when the first communication device performs data transmission with the network device or the third communication device, and the data cached when the first communication device performs data transmission with the fourth communication device.

Optionally, the radio resource configuration information of the first communication device includes: RLC configuration information, PDCP configuration information, MAC configuration information, PHY configuration information, etc. corresponding to the DRB, and relay cell configuration information (e.g., cell identification, cell network identification resource pool, etc.), and RLC configuration information, MAC configuration information, PHY configuration information, etc. corresponding to the sub-link side RLC.

When executing S1803, the second communications device may establish an RLC entity and a PDCP entity corresponding to the DRB, configure an MAC/PHY/adaptation layer, and the like according to RLC configuration information, PDCP configuration information, MAC configuration information, PHY configuration information, and the like corresponding to the DRB in the radio resource configuration information.

When the second communication device executes S1806, a relay cell may be created according to the relay cell configuration information; and establishing a sub-chain road side RLC entity, initializing an MAC/PHY/adaptation layer, initializing a Ur port RRC layer and the like according to RLC configuration information, MAC configuration information, PHY configuration information and the like corresponding to the sub-chain road side RLC.

Optionally, when the second communication device is a relay device, when the second communication device creates a relay cell, the second communication device needs to be implemented according to the following information:

the network identifier of the fourth communication device, the context of the fourth communication device, the QoS information of the fourth communication device, the data radio bearer identifier DRB ID of the fourth communication device, and the radio resource configuration information of the fourth communication device.

Example 2: in a case where the first communication device and the second communication device are directly connected to the network device. Referring to fig. 19, the process of establishing the RRC connection between the network device and the second communication device specifically includes:

S1901: and after updating the communication equipment state configuration information maintained by the network equipment, the network equipment updates a routing table and sends RRC connection reconfiguration to the second communication equipment.

S1902: and the second communication equipment configures a wireless interface according to the received RRC connection reconfiguration, and sends the RRC connection reconfiguration completion to the network equipment after the configuration is completed.

In this step, the configuration of the wireless interface performed by the second communication device is the same as that described in S1803 in example 1, and is described herein again.

S1903: and after receiving the RRC connection reconfiguration completion sent by the second communication equipment, the network equipment sends the RRC connection reconfiguration of the G1 port to the second communication equipment.

S1904: and the second communication equipment carries out radio interface configuration according to the received RRC connection reconfiguration of the port G1 sent by the network equipment, and sends the RRC connection reconfiguration completion of the port G1 to the network equipment after the configuration is completed.

In this step, the configuration of the wireless interface performed by the second communication device is the same as that described in S1806 in example 1, and is not described herein again.

As in S1803 and S1806 in example 1, in S1902 and S1904 in this example 2, the second communications device needs to acquire the communications configuration information through S1900, and perform the wireless interface configuration according to the communications configuration information.

S1900: the second communication device obtains communication configuration information. In this example, reference may be made to the above embodiments for the description related to the communication configuration information and the description related to the configuration of the wireless interface by the second communication device according to the communication configuration information, which is not described herein again.

Optionally, in this embodiment of the application, the second communication device may obtain the communication configuration information (execute the above S1800 or S1900) by, but not limited to, the following implementation manners:

the implementation mode is as follows: the second communication device acquires the communication configuration information from the first communication device.

The implementation mode two is as follows: the second communication device obtains the communication configuration information from the network device.

The implementation mode is three: the second communication device acquires the communication configuration information from the third communication device.

The implementation mode is four: the second communication device obtains a first communication configuration information set from the network device and a second communication configuration information set from the first communication device.

The implementation mode is five: the second communication device obtains the first communication configuration information set from the third communication device, and obtains the second communication configuration information set from the first communication device.

In the fourth and fifth implementation manners, the communication configuration information includes a first communication configuration information set and a second communication configuration information set.

Various implementations are described below by way of example.

The implementation mode is as follows:

example 1: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 20, the process of acquiring the communication configuration information by the second communication device specifically includes:

s2001: when the first communication device and the second communication device have a communication connection, the first communication device in the state of the master communication device may periodically send the latest communication configuration information to the second communication device during operation.

And after receiving the latest communication configuration information, the second communication equipment covers the received communication configuration information.

S2002: after the second communication device determines that the state of the second communication device is changed from the standby communication device to the main communication device, the integrity and the real-time performance (consistent with the communication configuration information currently stored by the first communication device) of the stored communication configuration information are checked; and when the second communication equipment determines that the stored communication configuration information is complete and has real-time performance, sending a communication configuration information complete instruction to the network equipment through the third communication equipment. Wherein. The communication configuration information complete indication is used for informing that: and the first communication equipment stores complete communication configuration information.

In this way, the network device does not need to reconfigure the communication configuration information in the later wireless interface configuration process for the second communication device.

Example 2: in the case where the first communication device and the second communication device directly access the network device. The process of the second communication device obtaining the communication configuration information may also refer to fig. 20, except that the communication configuration information sent by the second communication device to the network device completely indicates that the third communication device is not required to forward the communication configuration information.

Example 3: and when the first communication device and the second communication device access the network device through the third communication device and communication configuration information is stored in the third communication device. The process of the second communication device obtaining the communication configuration information may also refer to fig. 20, except that the second communication device sends a complete indication of the communication configuration information to the third network device. Wherein the communication configuration information integrity indication is used for notifying: and the first communication equipment stores complete communication configuration information. In this way, in the process of configuring the wireless interface of the second communication device by the network device, the third communication device is not required to send communication configuration information to the second communication device.

The implementation mode two is as follows:

example 1: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 21, the process of acquiring the communication configuration information by the second communication device specifically includes:

s2101: and after determining that the state of the second communication device is changed from the standby communication device to the main communication device, the second communication device sends a communication configuration information request to the network device through the third communication device.

Optionally, when the first communication device in the state of the master communication device periodically sends the latest communication configuration information to the second communication device in the operation process, the second communication device may execute S2101 when integrity and real-time performance (consistent with the communication configuration information currently stored by the first communication device) of the stored communication configuration information are checked and it is determined that the check is not passed.

S2102: and after receiving the communication configuration information request, the network equipment sends communication configuration information to the second communication equipment through the third communication equipment.

Example 2: in the case where the first communication device and the second communication device directly access the network device. The process of the second communication device obtaining the communication configuration information may also refer to fig. 21, except that the second communication device does not need to forward the information when performing information interaction with the network device.

The implementation mode is three:

example 1: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 22, the process of acquiring the communication configuration information by the second communication device specifically includes:

s2201: in the same manner as S2101 in example 1 in implementation three, details are not described here.

S2202: the network device transmits a configuration instruction to the third communication device when the latest communication configuration information is stored in the third communication device. The configuration indication is used to inform the third communication device to send the communication configuration information to the first communication device.

S2203: and after receiving the configuration instruction, the third communication equipment sends the communication configuration information to the second communication equipment according to the configuration instruction.

Example 2:

in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 23, the process of acquiring the communication configuration information by the second communication device specifically includes:

s2301: the second communication device transmits a communication configuration information request to the third communication device when the latest communication configuration information is stored in the third communication device.

Optionally, the second communication device may execute S2301 after determining that its own status is changed from the standby communication device to the primary communication device; s2301 may also be performed when integrity and real-time performance (which are consistent with the communication configuration information currently stored by the first communication device) of the stored communication configuration information are checked and it is determined that the check fails.

S2302: and the third communication equipment sends the communication configuration information to the second communication equipment after receiving the communication configuration information request.

The implementation mode is four:

example 1: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 24, the process of acquiring the communication configuration information by the second communication device specifically includes:

s2401: and under the condition that the first communication equipment and the second communication equipment have communication connection, the first communication equipment in the state of master communication equipment sends a second communication configuration information set to the second communication equipment in the operation process.

Optionally, the second set of communication configuration information may be periodically backed up to the second communication device by the second communication device. Optionally, the second communication configuration information set may also be kept unchanged within a set time duration.

S2402: and after the second communication equipment determines that the state of the second communication equipment is changed from the standby communication equipment to the main communication equipment, and when the second communication configuration information set is determined to be locally stored, the second communication equipment sends a communication configuration information request to the network equipment through the third communication equipment.

The communication configuration information request is used for requesting the first communication configuration information set, the communication configuration information request includes a first indication or a second indication, the first indication is used for indicating that the second communication configuration information set is already saved in the first communication device, and the second indication is used for indicating that the first communication configuration information set is not saved in the first communication device.

S2403: and after receiving the communication configuration information request, the network device sends a first communication configuration information set to the second communication device through the third communication device according to the first indication or the second indication in the communication configuration information request.

Example 2: in the case where the first communication device and the second communication device directly access the network device. The process of the second communication device obtaining the communication configuration information may also refer to fig. 24, except that the second communication device does not need to forward the information when interacting with the network device.

The implementation mode is five:

example 1: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 25, the process of acquiring the communication configuration information by the second communication device specifically includes:

s2501 and S2502 are the same as S2401 and S2402 of example 1 in the fourth implementation, and specific description may refer to the description of S2401 and S2402 above, which is not described herein again.

S2503: the network device transmits a configuration instruction to the third communication device when the latest communication configuration information is stored in the third communication device. The configuration indication is used to inform the third communication device to send the first set of communication configuration information to the first communication device.

S2504: and after receiving the configuration instruction, the third communication equipment sends the first communication configuration information set to the second communication equipment according to the configuration instruction.

Example 2: and under the condition that the first communication device and the second communication device access the network device through the third communication device and the third communication device stores the latest communication configuration information. Referring to fig. 26, the process of acquiring the communication configuration information by the second communication device specifically includes:

S2601 is the same as S2401 of example 1 in implementation fourth, and for the specific description, reference may be made to the description of S2401 above, which is not described herein again.

S2602: and the second communication equipment sends a communication configuration information request to the third communication equipment when determining that the second communication configuration information set is locally stored after determining that the state of the second communication equipment is changed from the standby communication equipment to the main communication equipment.

S2603: and after receiving the communication configuration information request, the third communication equipment sends a first communication configuration information set to the second communication equipment according to the first indication or the second indication in the communication configuration information.

In the embodiment of the present application, the state change triggering sub-process and the radio interface configuration sub-process (including the process of acquiring the communication configuration information) may be implemented in a process in which the communication system performs RRC reconfiguration. For example, the network device may carry a state change indication or communication configuration information or configuration indication in RRC connection reconfiguration. For another example, the second communication device may carry the communication configuration information request or the communication configuration information complete indication in the RRC connection reconfiguration complete.

In addition, it should be noted that, after the communication system completes the status change process of the second communication device, the status change may be continued after the status change trigger condition is satisfied.

If the first communication device and the second communication device are communication devices supporting an IAB function, the network device obtains the IAB related information of the first communication device or the second communication device, and may assist the network device in determining whether to perform a status change on the first communication device or the second communication device, or may assist the network device in performing a radio resource configuration on the first communication device or the second communication device. The implementation manner of the network device acquiring the IAB related information of the first communication device or the second communication device may be IAB information reporting or IAB information querying, and the specific process is described in detail below.

The implementation mode is as follows:

the following describes an IAB information query procedure using the first communication device as an example. The first communication device may actively send the IAB related information to the network device, that is, an IAB information report. The first communication device is a communication device supporting an IAB function.

The IAB-related information comprises any one or a combination of: the access return integrated node identification code of the first communication device, the network identifier of the first communication device, the C-RNTI of the first communication device, the access return integrated node identification code of the second communication device, the network identifier of the second communication device, the C-RNTI of the second communication device, a radio resource configuration alignment indication, a measurement configuration alignment indication, a sub-node configuration alignment indication, and an IAB configuration alignment indication. Wherein the second communication device is a pairing device of the first communication device, the radio resource configuration alignment indicates whether the radio resource configuration information of the second communication device saved by the first communication device is consistent with the radio resource configuration information saved by the second communication device, the measurement configuration alignment indication is used for indicating whether the measurement configuration information of the second communication device saved by the first communication device is consistent with the measurement configuration information saved by the second communication device, the child node configuration alignment indication is used for indicating whether the child node configuration information of the second communication device saved by the first communication device is consistent with the child node configuration information saved by the second communication device, the IAB configuration alignment indication is used to indicate whether the IAB configuration information of the second communication device saved by the first communication device is consistent with the IAB configuration information saved by the second communication device.

Optionally, the IAB related information is carried in an IAB information report message.

Optionally, when the IAB related information of the first communication device is changed or after accessing the network device, the IAB related information is not reported, and the first communication device may send the IAB related information to the network device.

Optionally, the network device may send one or more pieces of IAB-related information of the first communication device to a third communication device, where the third communication device is a parent node of the first communication device.

By reporting the IAB related information, the network device can be assisted to perform IAB function activation, IAB function deactivation, IAB function reconfiguration and the like on the network device.

The implementation mode two is as follows:

the IAB information query means that a network device can send an IAB information query instruction to a communication device supporting an IAB function, and the communication device sends its IAB related information to the network device after receiving the IAB information query instruction. The following describes an IAB information query procedure using the first communication device as an example.

Example 1: in the case where the first communication device and the second communication device access the network device through the third communication device. Referring to fig. 26a, the process of the network device acquiring the IAB related information of the first communication device specifically includes:

S26a 1: the method comprises the following steps that network equipment sends an IAB information inquiry instruction to first communication equipment, wherein the IAB information inquiry instruction is used for instructing the first communication equipment to: sending the IAB related information.

Wherein, the first communication device is a communication device supporting an IAB function, and the IAB related information includes any one or a combination of the following: the access backhaul integrated node identification code of the first communication device, the network identifier of the first communication device, the C-RNTI of the first communication device, the access backhaul integrated node identification code of the second communication device, the network identifier of the second communication device, the C-RNTI of the second communication device, the radio resource configuration alignment indication, the measurement configuration alignment indication, the sub-node configuration alignment indication, and the IAB configuration alignment indication. The second communication device is a paired device of the first communication device.

Optionally, the IAB information query instruction is an access return integrated information query message.

S26a 2: and after receiving the IAB information inquiry instruction, the first communication equipment sends the IAB related information to the network equipment.

Optionally, the IAB related information is carried in an access backhaul integrated information message.

Through the process of querying the IAB information, the network device may acquire the IAB related information of the first communication device at any time, and assist the network device in performing IAB function activation, IAB function deactivation, IAB function reconfiguration, and the like on the first communication device or the second communication device.

Example 2: in the case where the first communication device and the second communication device directly access the network device. Fig. 26a is also referred to a process of the network device acquiring the IAB related information of the first communication device, except that the first communication device does not need to forward the information when interacting with the network device.

It should be further noted that, in the above description of the communication method provided in the embodiment of the present application, changing from the primary communication device to the standby communication device may mean that the state of the communication device is changed from IAB on or activated to IAB off or not on or deactivated or not activated; the change from the primary communication device to the standby communication device may also mean that the communication device is changed from the IAB node to the UE; changing the standby communication device to the main communication device may mean that the state of the communication device is changed from IAB off, not on, or deactivated, or not activated to IAB on or activated; changing the standby communication device to the primary communication device may also mean that the communication device is changed from the UE to the IAB node. The state of the primary communication device may mean that the state of the communication device is IAB on or activated; the state of the standby communication device may mean that the state of the communication device is IAB off, or not on, or deactivated, or not activated; additionally, configuring the wireless interface may include configuring the IAB. The identity of the first communication device may be the IAB node identity, IMSI, IMEI, or an identity uniquely identifying the IAB node of the first communication device, or other identity that may uniquely identify the first communication device. The identity of the second communication device may be the IAB node identity, IMSI, IMEI, or an identity uniquely identifying the IAB node of the second communication device, or other identity that may uniquely identify the second communication device. The Ur port refers to the radio interface between a communication device and its parent node, e.g. between a UE and an IAB node. Port G1 refers to the wireless interface between a relay device and a network device, such as the wireless interface between an IAB node and a base station. The existence of the pairing relationship between the first communication device and the second communication device may refer to a connection relationship between the first communication device and the second communication device, for example, a wireless connection or a wired connection relationship exists between the first communication device and the second communication device. The paired device of the first communication device refers to a device having a pairing relationship with the first communication device. The pairing device of the second communication device refers to a device having a pairing relationship with the second communication device. A sub-link of a communication device refers to a link between the communication device and a child node of the communication device. A parent link of a communication device refers to a link between the communication device and a parent node of the communication device. The primary-standby communication device correspondence between the first communication device and the second communication device may refer to a pairing relationship or an association relationship between the first communication device and the second communication device. The paired device of the first communication device may be a master device or a slave device corresponding to the first communication device.

As can be seen from the above description of the three processes, in the communication method provided in the embodiment of the present application, the communication device in the state of the standby communication device may take over the transmission task of the corresponding primary communication device at any time to continue service transmission. Therefore, the communication system can ensure the continuity of service transmission through the state change of the main communication equipment and the standby communication equipment of the communication equipment, and can avoid the long-time operation work of the communication equipment so as to prolong the service life of the communication equipment, further improve the transmission efficiency and improve the user experience.

It should also be noted that the communication method provided in the embodiment of the present application is not limited to that the first communication device and the second communication device are deployed at the same location. In addition, the communication method provided by the embodiment of the present application is not limited to the communication system in which the communication devices are deployed doubly, and is also applicable to the communication system in which the communication devices are deployed singly. For example, when the change from the main communication device to the standby communication device means that the state of the communication device is changed from IAB activated to IAB inactivated, and the change from the standby communication device to the main communication device means that the state of the communication device is changed from IAB inactivated to IAB activated, the communication method for state change provided by the embodiment of the present application is actually equivalent to the IAB activation process and the IAB deactivation process, and is also applicable to a single communication device, and is used for controlling when the communication device turns on the IAB function and when turns off the IAB function. For another example, the communication method for reporting the IAB information and querying the IAB information provided in the embodiment of the present application is also applicable to a single communication device, and is used for a network to manage the communication device.

Based on the above embodiments, the present embodiment also provides a communication device, whose structure is shown in fig. 27, and includes a communication unit 2701 and a processing unit 2702. The apparatus 2700 may be applied in a first communication device or in a network device. The first communication device and the network device may be applied to the communication system shown in fig. 1, and may implement the communication methods in the above diagrams.

When the apparatus 2700 is applied to the first communication device, optionally, functions of the respective units are as follows:

a communication unit 2701, configured to send a first status change instruction to a network device, or acquire the first status change instruction, where the first status change instruction is used to notify: the state of the first communication equipment is changed from the standby communication equipment to the main communication equipment or from the main communication equipment to the standby communication equipment; and obtaining communication configuration information;

the processing unit 2702 is configured to configure a wireless interface according to the communication configuration information.

Optionally, the functions of the respective units may also be as follows:

the processing unit 2702 sends request information to the network device through the communication unit 2701, or receives a query instruction through the communication unit 2701; wherein the request information is for requesting: the first communication device becomes a master communication device, and the query indication is used for instructing the first communication device to send pairing state information to a network device.

In one possible implementation, the request information includes: the access return integration node identification code of the first communication equipment and/or the access return integration node identification code of the second communication equipment; wherein a pairing relationship exists between the first communication device and the second communication device.

In one possible implementation, the pairing status information includes one or more of the following: the communication device comprises an identification of the communication device in pairing relation with the first communication device, an IAB node identification code of the communication device in pairing relation with the first communication device, a C-RNTI of the communication device in pairing relation with the first communication device, and a status indication of the communication device in pairing relation with the first communication device. Wherein the status indication is used for indicating that the status of the communication device which has the pairing relation with the first communication device is a standby communication device or a primary communication device.

In a possible implementation manner, when acquiring the first status change instruction, the communication unit 2701 is specifically configured to:

receiving the first state change indication sent by the network device or a third communication device, wherein the third communication device is a parent node of the first communication device; or

And receiving the first state change instruction sent by a second communication device, wherein the second communication device is a main communication device or a standby communication device corresponding to the first communication device before the state of the first communication device is changed.

In a possible implementation manner, before the first communication device receives the first status change instruction sent by the network device, the communication unit 2701 is further configured to:

before receiving the first state change instruction sent by the network device, sending a first state change request to the network device, where the first state change request is used to request: the state of the first communication device is changed from the standby communication device to the main communication device or from the main communication device to the standby communication device.

before receiving the first state change instruction sent by the network device, sending a first state change request to the third communication device, where the first state change request is used to request: the state of the first communication device is changed from the standby communication device to the main communication device or from the main communication device to the standby communication device.

In a possible implementation manner, the communication unit 2701 is further configured to:

before sending the first status change indication to the network device, performing the following steps:

sending status information to the network device or a third communication device, the status information being used to notify: the state of the first communication equipment is standby communication equipment or main communication equipment; or

Receiving a status indication sent by the network device or a third communication device, where the status indication is used to indicate that the first communication device is a standby communication device or a primary communication device, and the third communication device is a parent node of the first communication device; or

Receiving communication device state configuration information sent by the network device or a third communication device, wherein the state of the first communication device in the communication device state configuration information is a standby communication device or a main communication device, and the third communication device is a parent node of the first communication device; or

Receiving a second state change instruction sent by the network device or a third communication device, where the second state change instruction is used to notify: the state of the first communication device is changed from a master communication device to a slave communication device or from a slave communication device to a master communication device, and the third communication device is a parent node of the first communication device.

In a possible implementation manner, when sending the status information to the network device, the communication unit 2701 is specifically configured to:

sending an identifier of the first communication device to the network device, wherein the identifier of the first communication device includes an indication field, and the indication field is used for indicating that the state of the first communication device is a standby communication device or a primary communication device; or

Sending indication information of a second communication device to the network device, where the indication information of the second communication device is used to indicate that a primary communication device or a standby communication device corresponding to the first communication device is the second communication device; or

Sending a state indication to the network device, where the state indication is used to indicate that the state of the first communication device is a standby communication device or a primary communication device; or

Sending the identifier and the status indication of the first communication device to the network device, where the status indication is used to indicate that the status is a standby communication device or a primary communication device, and the identifier of the first communication device is used to notify: the state indicated by the state indication is a state of the first communication device; or

Sending a state indication and indication information of a second communication device to the network device, wherein the state indication is used for indicating that the state of the first communication device is a standby communication device, and the indication information of the second communication device is used for indicating that a main communication device corresponding to the first communication device is the second communication device; or

Sending a state indication and indication information of a second communication device to the network device, wherein the state indication is used for indicating that the state of the first communication device is a main communication device, and the indication information of the second communication device is used for indicating that a standby communication device corresponding to the first communication device is the second communication device;

wherein the indication information of the second communication device is any one of: the identifier of the second communication device, the network identifier of the second communication device, the user identifier of the second communication device, and the access return integrated node identification code of the second communication device.

In a possible implementation manner, when acquiring the communication configuration information, the communication unit 2701 is specifically configured to:

acquiring the communication configuration information from a second communication device, wherein the second communication device is a main communication device corresponding to the first communication device before the state of the first communication device is changed; or

Receiving the communication configuration information from the network device or a third communication device, the third communication device being a parent node of the first communication device; or

Receiving a first set of communication configuration information from the network device or a third communication device, and obtaining the second set of communication configuration information from the second communication device, the third communication device being a parent node of the first communication device; the communication configuration information includes the first communication configuration information set and the second communication configuration information set.

after the communication configuration information is acquired from the second communication device, sending a communication configuration information complete indication to the network device or a third communication device, where the communication configuration information complete indication is used to notify: and the first communication device stores the complete communication configuration information, and the third communication device is a parent node of the first communication device.

sending a communication configuration information request to the network device or a third communication device prior to receiving the communication configuration information from the network device or the third communication device.

before receiving the first set of communication configuration information from the network device or the third communication device, after the processing unit 2702 determines to locally save the second set of communication configuration information, sending a communication configuration information request to the network device or the third communication device;

In a possible implementation manner, the communication configuration information includes any one or a combination of the following:

the method comprises the steps that wireless resource configuration information of second communication equipment, measurement configuration information of the second communication equipment, a value of an RLC state variable of the second communication equipment, data cached when the second communication equipment carries out data transmission, a network identifier of the fourth communication equipment, a context of the fourth communication equipment, service quality QoS information of the fourth communication equipment, a data wireless bearer identifier DRB ID of the fourth communication equipment, wireless resource configuration information of the fourth communication equipment and a value of the RLC state variable of the fourth communication equipment are obtained;

Before the state of the first communication device is changed, the second communication device is a main communication device corresponding to the first communication device, and the fourth communication device is a child node of the first communication device or the second communication device.

In a possible implementation manner, the first status change indication includes any one or a combination of the following: a primary and standby communication device correspondence identifier, an identifier of the first communication device, a network identifier of the first communication device, a state indication of the first communication device, an identifier of the second communication device, a network identifier of the second communication device, a state indication of the second communication device, and a state change reason indication;

wherein the second communication device is a primary communication device or a backup communication device corresponding to the first communication device before the state of the first communication device is changed.

In a possible implementation manner, the first communication device is a communication device that supports an access backhaul integrated IAB function, and the communication unit 2701 is further configured to:

sending the IAB related information of the first communication equipment to the network equipment; or

Receiving an IAB information query indication from the network device, the IAB information query indication instructing the first communication device to: sending IAB related information; sending the IAB related information of the first communication equipment to the network equipment;

Wherein the IAB-related information comprises any one or a combination of: the access backhaul integrated node identification code of the first communication device, the C-RNTI of the first communication device, the access backhaul integrated node identification code of the second communication device, the C-RNTI of the second communication device, a radio resource configuration alignment indication, a measurement configuration alignment indication, a child node configuration alignment indication, and an IAB configuration alignment indication; the second communication device is a pairing device of the first communication device, the radio resource configuration alignment indicates whether the radio resource configuration information of the second communication device saved by the first communication device is consistent with the radio resource configuration information saved by the second communication device, the measurement configuration alignment indication is used for indicating whether the measurement configuration information of the second communication device saved by the first communication device is consistent with the measurement configuration information saved by the second communication device, the child node configuration alignment indication is used for indicating whether the child node configuration information of the second communication device saved by the first communication device is consistent with the child node configuration information saved by the second communication device, the IAB configuration alignment indication is used to indicate whether the IAB configuration information of the second communication device saved by the first communication device is consistent with the IAB configuration information saved by the second communication device.

acquiring first cell information;

sending the first cell information to the network device;

the first cell information is cell information of a cell accessed by second communication equipment, and the second communication equipment is pairing equipment of the first communication equipment. The cell information may comprise any one or a combination of the following: cell identification, frequency point information used by the cell, sub-cell identification, frequency point information used by the sub-cell, and identification of communication equipment managing the cell. And the sub-cell is a cell managed by the access return integrated node or the relay equipment.

a communication unit 2701, configured to acquire a first status change instruction, where the first status change instruction is used to notify: the state of the first communication equipment is changed from the standby communication equipment to the main communication equipment or from the main communication equipment to the standby communication equipment;

the processing unit 2702 is configured to perform a wireless interface configuration on the first communication device.

Optionally, the functions of the respective units may also be as follows:

The processing unit 2702 receives a request message through the communication unit 2701 or transmits a query instruction through the communication unit 2701; wherein the request information is for requesting: the first communication device becomes a master communication device, and the query indication is used for instructing the first communication device to send pairing state information to a network device.

receiving the first state change indication from the first communication device; or

Receiving the first state change instruction from a second communication device, wherein the second communication device is a main communication device or a standby communication device corresponding to the first communication device before the state of the first communication device is changed; or

Receiving the first state change indication from a third communication device, the third communication device being a parent node of the first communication device; or

Receiving the first state change indication from a core network device; or

Obtaining the first state change indication locally.

In a possible implementation manner, the communication unit 2701 is further configured to: receiving first state information from the first communication device or a third communication device before receiving the first state change instruction, the first state information being used to notify: the state of the first communication device is a standby communication device or a main communication device, and the third communication device is a parent node of the first communication device; or

The communication unit 2701 is further configured to: receiving second state information from a second communication device or a third communication device before receiving the first state change instruction, the second state information being used to notify: the state of the second communication equipment is main communication equipment; the processing unit 2702 is further configured to: determining that the standby communication device corresponding to the second communication device is the first communication device according to a preset primary-standby communication device corresponding relationship, wherein the third communication device is a father node of the first communication device; or

The communication unit 2701 is further configured to: receiving second state information from a second communication device or a third communication device before receiving the first state change instruction, the second state information being used to notify: the state of the second communication equipment is standby communication equipment; the processing unit 2702 is further configured to: the network device determines, according to a preset primary-standby communication device correspondence, that a primary communication device corresponding to the second communication device is the first communication device, and the third communication device is a parent node of the first communication device; or

The communication unit 2701 is further configured to: before receiving the first state change instruction, sending a state instruction to the first communication device or a third communication device according to communication device state configuration information stored locally or received from a core network device, where the state instruction is used to indicate that the state of the first communication device is a standby communication device or a primary communication device, and the third communication device is a parent node of the first communication device; or

The communication unit 2701 is further configured to: before receiving the first state change instruction, sending communication device state configuration information to a third communication device, wherein the state of the first communication device in the communication device state configuration information is a standby communication device or a main communication device, and the third communication device is a parent node of the first communication device; or

The communication unit 2701 is further configured to: before receiving the first state change instruction, sending communication device state configuration information to the first communication device, where the state of the first communication device in the communication device state configuration information is a standby communication device or a primary communication device; or

The communication unit 2701 is further configured to: sending a second state change indication to the first communication device and/or a third communication device before receiving the first state change indication; the second status change indication is used to notify: the state of the first communication equipment is changed from the main communication equipment to the standby communication equipment or from the standby communication equipment to the main communication equipment; the third communication device is a parent node of the first communication device; or

The communication unit 2701 is further configured to: receiving a second state change indication from a third communication device prior to receiving the first state change indication; the second status change indication is used to notify: the state of the first communication equipment is changed from the main communication equipment to the standby communication equipment or from the standby communication equipment to the main communication equipment; the third communication device is a parent node of the first communication device.

In a possible implementation manner, when receiving the first status information from the first communication device, the communication device is specifically configured to:

receiving an identifier of the first communication device from the first communication device, wherein the identifier of the first communication device includes an indication field, and the indication field is used for indicating that the state of the first communication device is a standby communication device or a primary communication device; or

Receiving indication information of a second communication device from the first communication device, wherein the indication information of the second communication device is used for indicating that a main communication device or a standby communication device corresponding to the first communication device is the second communication device; or

Receiving a status indication from the first communication device, the status indication indicating that the first communication device is a standby communication device or a primary communication device; or

Receiving, from the first communication device, an identifier and a status indication of the first communication device, where the status indication is used to indicate that the status is a standby communication device or a primary communication device, and the identifier of the first communication device is used to notify: the state indicated by the state indication is a state of the first communication device; or

Receiving a status indication and indication information of a second communication device from the first communication device, where the status indication is used to indicate that the status of the first communication device is a standby communication device or a primary communication device, and the indication information of the second communication device is used to indicate that the primary communication device or the standby communication device corresponding to the first communication device is the second communication device; or

Receiving a state indication and indication information of a second communication device from the first communication device, wherein the state indication is used for indicating that the state of the first communication device is a main communication device, and the indication information of the second communication device is used for indicating that a standby communication device corresponding to the first communication device is the second communication device;

wherein the indication information of the second communication device is any one of:

the identifier of the second communication device, the network identifier of the second communication device, the user identifier of the second communication device, and the access return integrated node identification code of the second communication device.

after acquiring the first state change indication, executing the following steps:

sending communication device state configuration information to a third communication device, wherein the third communication device is a father node of the first communication device, and the state of the first communication device in the communication device state configuration information is configured as a main communication device or a standby communication device; or

And sending the first state change instruction to a third communication device, wherein the third communication device is a parent node of the first communication device.

In a possible implementation manner, when configuring a wireless interface of the first communication device, the processing unit 2702 is specifically configured to:

transmitting communication configuration information to the first communication device through the communication unit 2701; or

Transmitting, by the communication unit 2701, a first configuration instruction to the third communication apparatus, the first configuration instruction being used to notify the third communication apparatus to transmit communication configuration information to the first communication apparatus; or

Sending, by the communication unit 2701, a second configuration indication to the third communication device, the second configuration indication being used to inform the third communication device to send the first communication configuration information set to the first communication device; or

Transmitting a first set of communication configuration information to the first communication device through the communication unit 2701;

the communication configuration information includes the first communication configuration information set and the second communication configuration information set.

receiving a communication configuration information request from the first communication device prior to sending communication configuration information to the first communication device.

receiving a communication configuration information request from the first communication device prior to sending the first configuration indication to the third communication device.

before sending the second configuration indication to the third communication device, receiving a communication configuration request from the first communication device, where the communication configuration information request is used to request the first communication configuration information set, the communication configuration information request includes a first indication or a second indication, the first indication is used to indicate that the second communication configuration information set has been saved in the first communication device, and the second indication is used to indicate that the first communication configuration information set is not saved in the first communication device.

before sending the first communication configuration information set to the first communication device, receiving a communication configuration request from the first communication device, where the communication configuration information request is used to request the first communication configuration information set, the communication configuration information request includes a first indication or a second indication, the first indication is used to indicate that the second communication configuration information set has been saved in the first communication device, and the second indication is used to indicate that the first communication configuration information set is not saved in the first communication device.

receiving a communication configuration information integrity indication from the first communication device, the communication configuration information integrity indication informing of: and the first communication equipment stores complete communication configuration information.

Wherein the second communication device is a master communication device of the first communication device before the state of the first communication device is changed, and the fourth communication device is a child node of the first communication device or the second communication device.

receiving IAB-related information of the first communication device from the first communication device; or

Sending an IAB information query indication to the first communication device, wherein the IAB information query indication is used for indicating the first communication device to: sending IAB related information; receiving IAB-related information of the first communication device from the first communication device;

receiving first cell information from the first communication device;

It should be noted that, in the above embodiments of the present application, the division of the module is schematic, and is only a logical function division, and in actual implementation, there may be another division manner, and in addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or may exist alone physically, or two or more units are integrated in one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Based on the above embodiments, the embodiments of the present application further provide a communication device, where the communication device is configured to implement the communication method in each of the above figures. Referring to fig. 28, the communication device 2800 includes: a transceiver 2801, a processor 2802, and a memory 2803. Wherein the transceiver 2801, the processor 2802, and the memory 2803 are coupled to one another.

Optionally, the transceiver 2801, the processor 2802, and the memory 2803 are interconnected by a bus 2804. The bus 2804 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 28, but this is not intended to represent only one bus or type of bus.

The transceiver 2801 is used for receiving and transmitting data, and enabling communication with other devices (e.g., a child node, a parent node, and a network device of the communication device).

Optionally, the communication device 2800 further includes a communication interface 2805 for establishing a communication connection with another communication device for changing the active/standby state, which is deployed in the same location.

The processor 2802 is configured to implement the communication method in the foregoing figures, which may specifically refer to the description in the foregoing embodiments, and details are not described here again.

The memory 2803 stores program instructions and the like. In particular, the program instructions may include program code comprising computer operational instructions. Memory 2803 may include Random Access Memory (RAM) and may also include non-volatile memory (non-volatile memory), such as at least one disk memory. The processor 2802 executes the program instructions stored in the memory 2803 to implement the functions described above, thereby implementing the communication method provided by the above-described embodiment.

Based on the above embodiments, the embodiments of the present application further provide a network device, where the network device is configured to implement the communication method in each of the above figures. Referring to fig. 29, the network device 2900 includes: a transceiver 2901, a processor 2902, and a memory 2903. Wherein the transceiver 2901, the processor 2902, and the memory 2903 are interconnected.

Optionally, the transceiver 2901, the processor 2902, and the memory 2903 are interconnected via a bus 2904. The bus 2904 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 29, but this does not mean only one bus or one type of bus.

The transceiver 2901 is configured to receive and transmit data, and to communicate with other devices.

Optionally, the network device 2900 further includes a communication interface 2905 for enabling communication with a core network device.

The processor 2902 is configured to implement the communication method in the above figures, and specifically refer to the description in the above embodiments, which is not described herein again.

The memory 2903 stores program instructions and the like. In particular, the program instructions may include program code comprising computer operational instructions. Memory 2903 may include Random Access Memory (RAM), and may also include non-volatile memory (e.g., at least one disk memory). The processor 2902 executes the program instructions stored in the memory 2903 to implement the above-described functions, thereby implementing the communication method provided by the above-described embodiment.

Based on the above embodiments, the present application further provides a computer program, which, when running on a computer, causes the computer to execute the communication method provided by the above embodiments.

Based on the above embodiments, the present application also provides a computer storage medium, in which a computer program is stored, and when the computer program is executed by a computer, the computer causes the computer to execute the communication method provided by the above embodiments.

Based on the above embodiments, the embodiments of the present application further provide a chip, where the chip is used to read a computer program stored in a memory, and implement the communication method provided by the above embodiments.

Based on the foregoing embodiments, the present application provides a chip system, where the chip system includes a processor, and is used to support a computer device to implement the functions related to the communication device or the network device in the foregoing embodiments. In one possible design, the system-on-chip further includes a memory for storing programs and data necessary for the computer device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

In summary, the embodiment of the present application provides a communication method. In the method, the communication equipment with the state of the standby communication equipment can take over the transmission task of the corresponding main communication equipment at any time and continue to carry out service transmission. Therefore, the communication system can ensure the continuity of service transmission through the state change of the main communication equipment and the standby communication equipment of the communication equipment, and can avoid the long-time operation work of the communication equipment so as to prolong the service life of the communication equipment, further improve the transmission efficiency and improve the user experience.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the scope of the embodiments of the present application. Thus, to the extent that such modifications and variations of the embodiments of the present application fall within the scope of the claims and their equivalents, it is intended that the present application also encompass such modifications and variations.

Claims

A method of communication, comprising:

the first communication device sends a first state change instruction to the network device, or acquires the first state change instruction, wherein the first state change instruction is used for notifying that: the state of the first communication equipment is changed from the standby communication equipment to the main communication equipment or from the main communication equipment to the standby communication equipment; or

The first communication device sends request information to the network device, wherein the request information is used for requesting: the first communication device becomes a master communication device; or

The first communication device receives a query indication, wherein the query indication is used for indicating the first communication device to send pairing state information to a network device.
The method of claim 1, wherein the first communication device obtaining the first indication of change of state comprises:

the first communication device receives the first state change indication sent by the network device or a third communication device, wherein the third communication device is a parent node of the first communication device; or

The first communication device receives the first state change instruction sent by a second communication device, and the second communication device is a main communication device or a standby communication device corresponding to the first communication device before the state of the first communication device is changed.
The method of claim 2, wherein prior to the first communication device receiving the first indication of change of state sent by the network device, the method further comprises:

the first communication device sends a first state change request to the network device, wherein the first state change request is used for requesting: the state of the first communication device is changed from the standby communication device to the main communication device or from the main communication device to the standby communication device.
The method of claim 2, wherein prior to the first communication device receiving the first indication of change of state sent by the third communication device, the method further comprises:

the first communication device sends a first state change request to the third communication device, wherein the first state change request is used for requesting: the state of the first communication device is changed from the standby communication device to the main communication device or from the main communication device to the standby communication device.
The method of any of claims 1-4, wherein prior to the first communication device sending the first indication of change of state to the network device, the method further comprises:

the first communication device sends status information to the network device or a third communication device, wherein the status information is used for notifying that: the state of the first communication equipment is standby communication equipment or main communication equipment; or

The first communication device receives a state indication sent by the network device or a third communication device, wherein the state indication is used for indicating that the state of the first communication device is a standby communication device or a main communication device, and the third communication device is a parent node of the first communication device; or

The first communication device receives communication device state configuration information sent by the network device or a third communication device, wherein the state of the first communication device in the communication device state configuration information is a standby communication device or a main communication device, and the third communication device is a parent node of the first communication device; or

The first communication device receives a second state change instruction sent by the network device or a third communication device, where the second state change instruction is used to notify: the state of the first communication device is changed from a master communication device to a slave communication device or from a slave communication device to a master communication device, and the third communication device is a parent node of the first communication device.
The method of claim 5, wherein the first communication device sending the status information to the network device comprises:

the first communication device sends an identifier of the first communication device to the network device, wherein the identifier of the first communication device comprises an indication field, and the indication field is used for indicating that the state of the first communication device is a standby communication device or a primary communication device; or

The first communication device sends indication information of a second communication device to the network device, wherein the indication information of the second communication device is used for indicating that a main communication device or a standby communication device corresponding to the first communication device is the second communication device; or

The first communication equipment sends a state indication to the network equipment, wherein the state indication is used for indicating that the state of the first communication equipment is standby communication equipment or main communication equipment; or

The first communication device sends an identifier and a status indication of the first communication device to the network device, where the status indication is used to indicate that the status is a standby communication device or a primary communication device, and the identifier of the first communication device is used to notify: the state indicated by the state indication is a state of the first communication device; or

The first communication device sends a state indication and indication information of a second communication device to the network device, wherein the state indication is used for indicating that the state of the first communication device is a standby communication device, and the indication information of the second communication device is used for indicating that a main communication device corresponding to the first communication device is the second communication device; or

The first communication device sends a state indication and indication information of a second communication device to the network device, wherein the state indication is used for indicating that the state of the first communication device is a main communication device, and the indication information of the second communication device is used for indicating that a standby communication device corresponding to the first communication device is the second communication device;

wherein the indication information of the second communication device is any one of: the identifier of the second communication device, the network identifier of the second communication device, the user identifier of the second communication device, and the access return integrated node identification code of the second communication device.
The method of claim 1, wherein the request information comprises: the access return integration node identification code of the first communication equipment and/or the access return integration node identification code of the second communication equipment; wherein a pairing relationship exists between the first communication device and the second communication device.
The method of claim 1, wherein the first communication device is a communication device that supports access backhaul integrated IAB functionality, the method further comprising:

The first communication equipment sends IAB related information of the first communication equipment to the network equipment; or

The first communication device receives an IAB information query indication from the network device, the IAB information query indication instructing the first communication device to: sending IAB related information; the first communication equipment sends IAB related information of the first communication equipment to the network equipment;

wherein the IAB-related information comprises any one or a combination of: the access backhaul integrated node identification code of the first communication device, the C-RNTI of the first communication device, the access backhaul integrated node identification code of the second communication device, the C-RNTI of the second communication device, a radio resource configuration alignment indication, a measurement configuration alignment indication, a child node configuration alignment indication, and an IAB configuration alignment indication; the second communication device is a pairing device of the first communication device, the radio resource configuration alignment indicates whether the radio resource configuration information of the second communication device saved by the first communication device is consistent with the radio resource configuration information saved by the second communication device, the measurement configuration alignment indication is used for indicating whether the measurement configuration information of the second communication device saved by the first communication device is consistent with the measurement configuration information saved by the second communication device, the child node configuration alignment indication is used for indicating whether the child node configuration information of the second communication device saved by the first communication device is consistent with the child node configuration information saved by the second communication device, the IAB configuration alignment indication is used to indicate whether the IAB configuration information of the second communication device saved by the first communication device is consistent with the IAB configuration information saved by the second communication device.
The method of claim 1, wherein the method further comprises:

the first communication equipment acquires first cell information;

the first communication device sends the first cell information to the network device;

the first cell information is cell information of a cell accessed by second communication equipment, and the second communication equipment is pairing equipment of the first communication equipment.
A method of communication, comprising:

the network equipment acquires a first state change instruction, wherein the first state change instruction is used for notifying that: the state of the first communication equipment is changed from the standby communication equipment to the main communication equipment or from the main communication equipment to the standby communication equipment; or

The network equipment receives request information, and the request information is used for requesting: the first communication device becomes a master communication device; or

The network equipment sends a query instruction, wherein the query instruction is used for instructing the first communication equipment to send the pairing state information to the network equipment.
The method of claim 10, wherein the network device obtaining the first indication of change of state comprises:

the network device receiving the first state change indication from the first communication device; or

The network device receives the first state change instruction from a second communication device, wherein the second communication device is a main communication device or a standby communication device corresponding to the first communication device before the state of the first communication device is changed; or

Receiving, by the network device, the first status change indication from a third communication device, the third communication device being a parent node of the first communication device; or

The network equipment receives the first state change indication from core network equipment; or

The network device locally obtains the first state change indication.
The method of claim 10 or 11, wherein prior to the network device receiving the first state change indication, the method further comprises:

the network device receives first status information from the first communication device or a third communication device, the first status information notifying: the state of the first communication device is a standby communication device or a main communication device, and the third communication device is a parent node of the first communication device; or

The network device receives second status information from a second communication device or a third communication device, the second status information being used to notify: the state of the second communication device is a main communication device, the network device determines, according to a preset main-standby communication device correspondence, that a standby communication device corresponding to the second communication device is the first communication device, and the third communication device is a parent node of the first communication device; or

The network device receives second status information from a second communication device or a third communication device, the second status information being used to notify: the network device determines, according to a preset primary-standby communication device correspondence relationship, that a primary communication device corresponding to the second communication device is the first communication device, and the third communication device is a parent node of the first communication device; or

The network device sends a state indication to the first communication device or a third communication device according to communication device state configuration information stored locally or received from a core network device, wherein the state indication is used for indicating that the state of the first communication device is a standby communication device or a main communication device, and the third communication device is a father node of the first communication device; or

The network device sends communication device state configuration information to a third communication device, wherein the state of the first communication device in the communication device state configuration information is a standby communication device or a main communication device, and the third communication device is a parent node of the first communication device; or

The network equipment sends communication equipment state configuration information to the first communication equipment, wherein the state of the first communication equipment in the communication equipment state configuration information is standby communication equipment or main communication equipment; or

The network equipment sends a second state change instruction to the first communication equipment and/or third communication equipment; the second status change indication is used to notify: the state of the first communication equipment is changed from the main communication equipment to the standby communication equipment or from the standby communication equipment to the main communication equipment; the third communication device is a parent node of the first communication device; or

The network device receiving a second state change indication from a third communication device; the second status change indication is used to notify: the state of the first communication equipment is changed from the main communication equipment to the standby communication equipment or from the standby communication equipment to the main communication equipment; the third communication device is a parent node of the first communication device.
The method of claim 12, wherein the network device receives the first status information from the first communication device, comprising:

the network device receives an identifier of the first communication device from the first communication device, wherein the identifier of the first communication device comprises an indication field, and the indication field is used for indicating that the state of the first communication device is a standby communication device or a primary communication device; or

The network device receives indication information of a second communication device from the first communication device, wherein the indication information of the second communication device is used for indicating that a main communication device or a standby communication device corresponding to the first communication device is the second communication device; or

The network equipment receives a state indication from the first communication equipment, wherein the state indication is used for indicating that the state of the first communication equipment is standby communication equipment or main communication equipment; or

The network device receives an identifier and a status indication of the first communication device from the first communication device, where the status indication is used to indicate that the status is a standby communication device or a primary communication device, and the identifier of the first communication device is used to notify: the state indicated by the state indication is a state of the first communication device; or

The network device receives a state indication and indication information of a second communication device from the first communication device, wherein the state indication is used for indicating that the state of the first communication device is a standby communication device or a main communication device, and the indication information of the second communication device is used for indicating that the main communication device or the standby communication device corresponding to the first communication device is the second communication device; or

The network device receives a state indication and indication information of a second communication device from the first communication device, wherein the state indication is used for indicating that the state of the first communication device is a main communication device, and the indication information of the second communication device is used for indicating that a standby communication device corresponding to the first communication device is the second communication device;

wherein the indication information of the second communication device is any one of:

the identifier of the second communication device, the network identifier of the second communication device, the user identifier of the second communication device, and the access return integrated node identification code of the second communication device.
The method of any of claims 10-13, wherein after the network device obtains the first indication of change of state, the method further comprises:

the network device sends communication device state configuration information to a third communication device, the third communication device is a father node of the first communication device, and the state of the first communication device in the communication device state configuration information is configured to be a main communication device or a standby communication device; or

And the network equipment sends the first state change instruction to a third communication equipment, wherein the third communication equipment is a father node of the first communication equipment.
The method of claim 10, wherein the request message comprises: the access return integration node identification code of the first communication equipment and/or the access return integration node identification code of the second communication equipment; wherein a pairing relationship exists between the first communication device and the second communication device.
The method of claim 10, wherein the first communication device is a communication device that supports access backhaul integrated IAB functionality, the method further comprising:

the network device receiving IAB related information of the first communication device from the first communication device; or

The network device sends an IAB information query instruction to the first communication device, wherein the IAB information query instruction is used for instructing the first communication device to: sending IAB related information; the network device receiving IAB related information of the first communication device from the first communication device;

wherein the IAB-related information comprises any one or a combination of: the access backhaul integrated node identification code of the first communication device, the C-RNTI of the first communication device, the access backhaul integrated node identification code of the second communication device, the C-RNTI of the second communication device, a radio resource configuration alignment indication, a measurement configuration alignment indication, a child node configuration alignment indication, and an IAB configuration alignment indication; the second communication device is a pairing device of the first communication device, the radio resource configuration alignment indicates whether the radio resource configuration information of the second communication device saved by the first communication device is consistent with the radio resource configuration information saved by the second communication device, the measurement configuration alignment indication is used for indicating whether the measurement configuration information of the second communication device saved by the first communication device is consistent with the measurement configuration information saved by the second communication device, the child node configuration alignment indication is used for indicating whether the child node configuration information of the second communication device saved by the first communication device is consistent with the child node configuration information saved by the second communication device, the IAB configuration alignment indication is used to indicate whether the IAB configuration information of the second communication device saved by the first communication device is consistent with the IAB configuration information saved by the second communication device.
The method of claim 10, wherein the method further comprises:

the network device receiving first cell information from the first communication device;

the first cell information is cell information of a cell accessed by second communication equipment, and the second communication equipment is pairing equipment of the first communication equipment.
A communication apparatus, applied to a first communication device, comprising:

a communication unit for receiving and transmitting data;

a processing unit, configured to send a first status change instruction to a network device through the communication unit, or obtain the first status change instruction, where the first status change instruction is used to notify: the state of the first communication equipment is changed from the standby communication equipment to the main communication equipment or from the main communication equipment to the standby communication equipment; or is configured to send request information to a network device through the communication unit, where the request information is used to request: the first communication device becomes a master communication device; or receiving, by the communication unit, an inquiry instruction, where the inquiry instruction is used to instruct the first communication device to send pairing state information to a network device.
The apparatus as claimed in claim 18, wherein said communication unit, upon obtaining said first status change indication, is specifically configured to:

receiving the first state change indication sent by the network device or a third communication device, wherein the third communication device is a parent node of the first communication device; or

And receiving the first state change instruction sent by a second communication device, wherein the second communication device is a main communication device or a standby communication device corresponding to the first communication device before the state of the first communication device is changed.
The apparatus of claim 19, wherein the communication unit is further configured to:

before receiving the first state change instruction sent by the network device, sending a first state change request to the network device, where the first state change request is used to request: the state of the first communication device is changed from the standby communication device to the main communication device or from the main communication device to the standby communication device.
The apparatus of claim 19, wherein the communication unit is further configured to:

before receiving the first state change instruction sent by the network device, sending a first state change request to the third communication device, where the first state change request is used to request: the state of the first communication device is changed from the standby communication device to the main communication device or from the main communication device to the standby communication device.
The apparatus of any of claims 18-21, wherein the communication unit is further configured to:

before sending the first status change indication to the network device, performing the following steps:

sending status information to the network device or a third communication device, the status information being used to notify: the state of the first communication equipment is standby communication equipment or main communication equipment; or

Receiving a status indication sent by the network device or a third communication device, where the status indication is used to indicate that the first communication device is a standby communication device or a primary communication device, and the third communication device is a parent node of the first communication device; or

Receiving communication device state configuration information sent by the network device or a third communication device, wherein the state of the first communication device in the communication device state configuration information is a standby communication device or a main communication device, and the third communication device is a parent node of the first communication device; or

Receiving a second state change instruction sent by the network device or a third communication device, where the second state change instruction is used to notify: the state of the first communication device is changed from a master communication device to a slave communication device or from a slave communication device to a master communication device, and the third communication device is a parent node of the first communication device.
The apparatus as claimed in claim 22, wherein said communication unit, when sending said status information to said network device, is specifically configured to:

sending an identifier of the first communication device to the network device, wherein the identifier of the first communication device includes an indication field, and the indication field is used for indicating that the state of the first communication device is a standby communication device or a primary communication device; or

Sending indication information of a second communication device to the network device, where the indication information of the second communication device is used to indicate that a primary communication device or a standby communication device corresponding to the first communication device is the second communication device; or

Sending a state indication to the network device, where the state indication is used to indicate that the state of the first communication device is a standby communication device or a primary communication device; or

Sending the identifier and the status indication of the first communication device to the network device, where the status indication is used to indicate that the status is a standby communication device or a primary communication device, and the identifier of the first communication device is used to notify: the state indicated by the state indication is a state of the first communication device; or

Sending a state indication and indication information of a second communication device to the network device, wherein the state indication is used for indicating that the state of the first communication device is a standby communication device, and the indication information of the second communication device is used for indicating that a main communication device corresponding to the first communication device is the second communication device; or

Sending a state indication and indication information of a second communication device to the network device, wherein the state indication is used for indicating that the state of the first communication device is a main communication device, and the indication information of the second communication device is used for indicating that a standby communication device corresponding to the first communication device is the second communication device;

wherein the indication information of the second communication device is any one of: the identifier of the second communication device, the network identifier of the second communication device, the user identifier of the second communication device, and the access return integrated node identification code of the second communication device.
The apparatus of claim 18, wherein the request information comprises: the access return integration node identification code of the first communication equipment and/or the access return integration node identification code of the second communication equipment; wherein a pairing relationship exists between the first communication device and the second communication device.
The apparatus of claim 18, wherein the first communication device is a communication device that supports access backhaul integrated IAB functionality, and wherein the communication unit is further configured to:

sending the IAB related information of the first communication equipment to the network equipment; or

Receiving an IAB information query indication from the network device, the IAB information query indication instructing the first communication device to: sending IAB related information; sending the IAB related information of the first communication equipment to the network equipment;

wherein the IAB-related information comprises any one or a combination of: the access backhaul integrated node identification code of the first communication device, the C-RNTI of the first communication device, the access backhaul integrated node identification code of the second communication device, the C-RNTI of the second communication device, a radio resource configuration alignment indication, a measurement configuration alignment indication, a child node configuration alignment indication, and an IAB configuration alignment indication; the second communication device is a pairing device of the first communication device, the radio resource configuration alignment indicates whether the radio resource configuration information of the second communication device saved by the first communication device is consistent with the radio resource configuration information saved by the second communication device, the measurement configuration alignment indication is used for indicating whether the measurement configuration information of the second communication device saved by the first communication device is consistent with the measurement configuration information saved by the second communication device, the child node configuration alignment indication is used for indicating whether the child node configuration information of the second communication device saved by the first communication device is consistent with the child node configuration information saved by the second communication device, the IAB configuration alignment indication is used to indicate whether the IAB configuration information of the second communication device saved by the first communication device is consistent with the IAB configuration information saved by the second communication device.
The apparatus of claim 18, wherein the communication unit is further configured to:

acquiring first cell information;

sending the first cell information to the network device;

the first cell information is cell information of a cell accessed by second communication equipment, and the second communication equipment is pairing equipment of the first communication equipment.
A communication apparatus applied to a network device, comprising:

a communication unit for receiving and transmitting data;

a processing unit, configured to obtain, by the communication unit, a first status change instruction, where the first status change instruction is used to notify: the state of the first communication equipment is changed from the standby communication equipment to the main communication equipment or from the main communication equipment to the standby communication equipment; or for receiving request information by the communication unit, the request information requesting: the first communication device becomes a master communication device; or sending, by the communication unit, an inquiry instruction, where the inquiry instruction is used to instruct the first communication device to send pairing state information to a network device.
The apparatus as claimed in claim 27, wherein said communication unit, upon acquiring said first status change indication, is configured to:

Receiving the first state change indication from the first communication device; or

Receiving the first state change instruction from a second communication device, wherein the second communication device is a main communication device or a standby communication device corresponding to the first communication device before the state of the first communication device is changed; or

Receiving the first state change indication from a third communication device, the third communication device being a parent node of the first communication device; or

Receiving the first state change indication from a core network device; or

Obtaining the first state change indication locally.
The apparatus of claim 27 or 28,

the communication unit is further configured to: receiving first state information from the first communication device or a third communication device before receiving the first state change instruction, the first state information being used to notify: the state of the first communication device is a standby communication device or a main communication device, and the third communication device is a parent node of the first communication device; or

The communication unit is further configured to: receiving second state information from a second communication device or a third communication device before receiving the first state change instruction, the second state information being used to notify: the state of the second communication equipment is main communication equipment; the processing unit is further configured to: determining that the standby communication device corresponding to the second communication device is the first communication device according to a preset primary-standby communication device corresponding relationship, wherein the third communication device is a father node of the first communication device; or

The communication unit is further configured to: receiving second state information from a second communication device or a third communication device before receiving the first state change instruction, the second state information being used to notify: the state of the second communication equipment is standby communication equipment; the processing unit is further configured to: the network device determines, according to a preset primary-standby communication device correspondence, that a primary communication device corresponding to the second communication device is the first communication device, and the third communication device is a parent node of the first communication device; or

The communication unit is further configured to: before receiving the first state change instruction, sending a state instruction to the first communication device or a third communication device according to communication device state configuration information stored locally or received from a core network device, where the state instruction is used to indicate that the state of the first communication device is a standby communication device or a primary communication device, and the third communication device is a parent node of the first communication device; or

The communication unit is further configured to: before receiving the first state change instruction, sending communication device state configuration information to a third communication device, wherein the state of the first communication device in the communication device state configuration information is a standby communication device or a main communication device, and the third communication device is a parent node of the first communication device; or

The communication unit is further configured to: before receiving the first state change instruction, sending communication device state configuration information to the first communication device, where the state of the first communication device in the communication device state configuration information is a standby communication device or a primary communication device; or

The communication unit is further configured to: sending a second state change indication to the first communication device and/or a third communication device before receiving the first state change indication; the second status change indication is used to notify: the state of the first communication equipment is changed from the main communication equipment to the standby communication equipment or from the standby communication equipment to the main communication equipment; the third communication device is a parent node of the first communication device; or

The communication unit is further configured to: receiving a second state change indication from a third communication device prior to receiving the first state change indication; the second status change indication is used to notify: the state of the first communication equipment is changed from the main communication equipment to the standby communication equipment or from the standby communication equipment to the main communication equipment; the third communication device is a parent node of the first communication device.
The apparatus as claimed in claim 29, wherein said communication unit, upon receiving said first status information from said first communication device, is specifically configured to:

receiving an identifier of the first communication device from the first communication device, wherein the identifier of the first communication device includes an indication field, and the indication field is used for indicating that the state of the first communication device is a standby communication device or a primary communication device; or

Receiving indication information of a second communication device from the first communication device, wherein the indication information of the second communication device is used for indicating that a main communication device or a standby communication device corresponding to the first communication device is the second communication device; or

Receiving a status indication from the first communication device, the status indication indicating that the first communication device is a standby communication device or a primary communication device; or

Receiving, from the first communication device, an identifier and a status indication of the first communication device, where the status indication is used to indicate that the status is a standby communication device or a primary communication device, and the identifier of the first communication device is used to notify: the state indicated by the state indication is a state of the first communication device; or

Receiving a status indication and indication information of a second communication device from the first communication device, where the status indication is used to indicate that the status of the first communication device is a standby communication device or a primary communication device, and the indication information of the second communication device is used to indicate that the primary communication device or the standby communication device corresponding to the first communication device is the second communication device; or receiving a status indication and indication information of a second communication device from the first communication device, where the status indication is used to indicate that the status of the first communication device is a primary communication device, and the indication information of the second communication device is used to indicate that a standby communication device corresponding to the first communication device is the second communication device;

wherein the indication information of the second communication device is any one of:

the identifier of the second communication device, the network identifier of the second communication device, the user identifier of the second communication device, and the access return integrated node identification code of the second communication device.
The apparatus of any of claims 27-30, wherein the communication unit is further configured to:

after acquiring the first state change indication, executing the following steps:

Sending communication device state configuration information to a third communication device, wherein the third communication device is a father node of the first communication device, and the state of the first communication device in the communication device state configuration information is configured as a main communication device or a standby communication device; or

And sending the first state change instruction to a third communication device, wherein the third communication device is a parent node of the first communication device.
The apparatus of claim 27, wherein the request information comprises: the access return integration node identification code of the first communication equipment and/or the access return integration node identification code of the second communication equipment; wherein a pairing relationship exists between the first communication device and the second communication device.
The apparatus of claim 27, wherein the first communication device is a communication device that supports access backhaul integrated IAB functionality, and wherein the communication unit is further configured to:

receiving IAB-related information of the first communication device from the first communication device; or

Sending an IAB information query indication to the first communication device, wherein the IAB information query indication is used for indicating the first communication device to: sending IAB related information; receiving IAB-related information of the first communication device from the first communication device;

Wherein the IAB-related information comprises any one or a combination of: the access backhaul integrated node identification code of the first communication device, the C-RNTI of the first communication device, the access backhaul integrated node identification code of the second communication device, the C-RNTI of the second communication device, a radio resource configuration alignment indication, a measurement configuration alignment indication, a child node configuration alignment indication, and an IAB configuration alignment indication; the second communication device is a pairing device of the first communication device, the radio resource configuration alignment indicates whether the radio resource configuration information of the second communication device saved by the first communication device is consistent with the radio resource configuration information saved by the second communication device, the measurement configuration alignment indication is used for indicating whether the measurement configuration information of the second communication device saved by the first communication device is consistent with the measurement configuration information saved by the second communication device, the child node configuration alignment indication is used for indicating whether the child node configuration information of the second communication device saved by the first communication device is consistent with the child node configuration information saved by the second communication device, the IAB configuration alignment indication is used to indicate whether the IAB configuration information of the second communication device saved by the first communication device is consistent with the IAB configuration information saved by the second communication device.
The apparatus of claim 27, wherein the communication unit is further configured to:

receiving first cell information from the first communication device;

the first cell information is cell information of a cell accessed by second communication equipment, and the second communication equipment is pairing equipment of the first communication equipment.
A communication device, comprising:

a memory for storing program instructions;

a transceiver for receiving and transmitting data;

a processor for invoking the program instructions stored in the memory to perform the method of any one of claims 1-9 through the transceiver.
A network device, comprising:

a memory for storing program instructions;

a transceiver for receiving and transmitting data;

a processor for invoking the program instructions stored in the memory to perform the method of any of claims 10-17 through the transceiver.
A computer program, which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 17.
A computer storage medium, in which a computer program is stored which, when executed by a computer, causes the computer to perform the method of any one of claims 1-17.
A chip for reading a computer program stored in a memory for performing the method according to any of claims 1-17.