CN115226133A

CN115226133A - Method, system, device, equipment and medium for adding or changing primary and secondary cells

Info

Publication number: CN115226133A
Application number: CN202210851577.8A
Authority: CN
Inventors: 刘胜楠; 蒋峥; 佘小明
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-10-21

Abstract

The disclosure provides a method, a system, a device, electronic equipment and a computer storage medium for adding or changing a primary cell and a secondary cell, and relates to the technical field of wireless communication. The method comprises the following steps: receiving conditional primary and secondary cell adding or changing CPAC configuration information sent by a master node, wherein the CPAC configuration information comprises one or more of the following information: indicating the terminal to continuously execute CPAC (continuous operation access control) indicating information and a CPAC flow maximum value; and continuously executing the CPAC process according to the CPAC configuration information. The embodiment of the disclosure can realize multiple primary and secondary cell change processes through one RRC configuration, thereby reducing signaling overhead and time delay and improving user experience.

Description

Method, system, device, equipment and medium for adding or changing primary and secondary cells

Technical Field

The present disclosure relates to the field of wireless communication technologies, and in particular, to a method, a system, an apparatus, an electronic device, and a computer storage medium for adding or changing a primary cell and a secondary cell.

Background

With the continuous advance of 5G commercial deployment, spectrum resources of a low frequency band tend to be saturated, a network evolution advances to a higher frequency band, and for transmission characteristics of high frequency millimeter waves, in order to ensure basic coverage of users, an operator may deploy an MR-DC (Multi-RAT Dual Connectivity) architecture in a large scale and configure a high frequency cell as an auxiliary cell group. For a high-frequency cell in a network, such as a millimeter wave cell, the coverage radius of the high-frequency cell is small, and in order to guarantee user service experience of a 5G emerging application and ensure that the network provides reliable consistent service for a user, it is necessary to enhance an MR-DC scenario and a mobility related mechanism in an NR (New Radio) system.

The 3GPP (3 rd Generation Partnership Project) introduced a CPAC (Conditional Primary and Secondary Cell Addition or Change) mechanism in Rel-16 (5G second-stage standard version) and Rel-17 (5G third-stage standard version), allowing the network to configure a plurality of candidate Primary and Secondary cells (pscells) for the terminal, and the terminal evaluates PScell Addition or Change execution conditions, and when one or more PScell Addition or Change execution conditions are satisfied, directly initiating a random access procedure to a target PScell. However, the existing standard specifies that, after the terminal performs random access to the target PScell, the CPAC configuration needs to be released, that is, the terminal cannot perform continuous CPAC, which results in that the terminal needs to wait for network reconfiguration to perform the next PScell change after completing one PScell addition or change, and when a cell is deployed, frequent PScell changes may cause a reduction in user experience and more signaling overhead.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The present disclosure provides a method, a system, an apparatus, an electronic device, and a computer storage medium for adding or changing a primary cell and a secondary cell, which overcome, at least to some extent, the problems of high time delay and high signaling overhead caused by frequent PSCell changes in the related art.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosure.

According to an aspect of the present disclosure, a method for adding or changing a primary cell and a secondary cell is provided, which is applied to a terminal, and includes:

receiving conditional primary and secondary cell adding or changing CPAC configuration information sent by a master node, wherein the CPAC configuration information comprises one or more of the following information:

indication information indicating that the terminal continuously executes CPAC;

maximum value of CPAC process, which is: the maximum number of consecutive CPAC procedures that the terminal can support.

In one embodiment of the present disclosure, further comprising: and judging whether the execution quantity of the CPAC flows exceeds the maximum value of the CPAC flows, if so, sending a signaling to the main node, and releasing the CPAC configuration.

In one embodiment of the present disclosure, further comprising: and receiving a Radio Resource Control (RRC) signaling sent by the main node, wherein the RRC signaling carries the CPAC configuration information.

In one embodiment of the present disclosure, further comprising:

and when the execution quantity of the CPAC flows does not exceed the maximum CPAC flow, reserving or storing the CPAC configuration information and continuously monitoring the state of the candidate cell.

In one embodiment of the present disclosure, further comprising:

when the CPAC execution condition is met, initiating a random access process to a target primary cell and a target secondary cell;

and reporting the selected target main and auxiliary cell information to the main node.

In an embodiment of the present disclosure, the CPAC configuration information includes an identifier or an index of the candidate cell and a CPAC execution condition corresponding to the candidate cell.

In an embodiment of the present disclosure, the receiving CPAC configuration information sent by the master node includes:

and sending a first signaling to the master node, wherein the first signaling indicates that the current terminal of the master node receives the CPAC configuration information.

In one embodiment of the present disclosure, after the sending the signaling to the master node, the method includes:

and sending a second signaling to the master node, wherein the second signaling indicates that the current CPAC execution times of the master node reaches the maximum CPAC process.

According to another aspect of the present disclosure, there is also provided a primary and secondary cell adding or changing method, applied to a primary node, including:

sending CPAC configuration information to a terminal, wherein the CPAC configuration information comprises one or more of the following information:

indication information indicating that the terminal continuously executes CPAC;

and maximum CPAC process, wherein the maximum CPAC process is the maximum number of continuously executing CPAC processes which can be supported by the terminal.

In an embodiment of the present disclosure, the sending CPAC configuration information to the terminal includes:

receiving a measurement report reported by a terminal;

judging whether to send the CPAC configuration information to the terminal according to one or more of the following information:

the measurement report;

feedback information of the candidate target node;

actually deploying scene data;

terminal performance data.

According to another aspect of the present disclosure, there is also provided a primary and secondary cell adding or changing system, including:

the terminal receives CPAC configuration information sent by the master node, continuously executes CPAC processes according to the CPAC configuration information, releases the CPAC configuration information when the execution number of the CPAC processes reaches the maximum value of the CPAC processes, and sends a second signaling to the master node to indicate that the execution times of the CAPC processes reach the maximum value; when the CPAC execution condition is met, initiating random access information to a target main and auxiliary cell;

the master node determines whether a terminal is configured to continuously execute the CPAC process; sending CPAC configuration information to a terminal; and receiving the signaling sent by the terminal.

According to another aspect of the present disclosure, there is also provided a primary and secondary cell adding or changing apparatus, including:

the CPAC configuration information receiving module is used for receiving conditional primary and secondary cell adding or changing CPAC configuration information sent by a master node, wherein the CPAC configuration information comprises one or more of the following information:

indication information indicating that the terminal continuously executes CPAC;

maximum CPAC process, which is the maximum number of continuous CPAC processes that can be supported by the terminal;

the CPAC flow continuous execution module is used for continuously executing the CPAC flow according to the indication information of the indication terminal;

and the CPAC flow maximum value judging module is used for judging whether the execution quantity of the CPAC flows exceeds the CPAC flow maximum value, if so, sending a signaling to the main node and releasing the CPAC configuration.

According to another aspect of the present disclosure, there is also provided an electronic device including: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform any one of the primary and secondary cell addition or change methods described above via execution of the executable instructions.

According to another aspect of the present disclosure, there is also provided a computer-readable storage medium having a computer program stored thereon, the computer program, when executed by a processor, implementing the primary and secondary cell addition or change method of any one of the above.

The method, system, apparatus, electronic device and computer storage medium for adding or changing primary and secondary cells provided by the embodiments of the present disclosure receive conditional primary and secondary cell addition or change CPAC configuration information sent by a master node, where the CPAC configuration information includes one or more of the following information: indicating the terminal to continuously execute CPAC (continuous operation access control) indicating information and a CPAC flow maximum value; according to the CPAC configuration information, the CPAC process is continuously executed, and the process of changing the main cell and the auxiliary cell is realized for many times through one-time configuration, so that the signaling overhead is reduced, the time delay is reduced, and the user experience is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure. It should be apparent that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived by those of ordinary skill in the art without inventive effort.

Fig. 1 shows a flowchart of a method for adding or changing a primary cell and a secondary cell in an embodiment of the present disclosure;

fig. 2 shows a flowchart of another method for adding or changing primary and secondary cells in the embodiment of the present disclosure;

fig. 3 shows a flowchart of a method for randomly accessing a primary cell and a secondary cell in an embodiment of the present disclosure;

fig. 4 shows a flow chart of a method for sending CPAC configuration information in an embodiment of the present disclosure;

fig. 5 is a flowchart illustrating a method for adding or changing a primary cell and a secondary cell in an embodiment of the disclosure;

fig. 6 is a flowchart illustrating a method for a terminal to execute a continuous CPAC mechanism signaling in an embodiment of the present disclosure;

fig. 7 is a schematic diagram of a primary-secondary cell changing apparatus in an embodiment of the present disclosure;

fig. 8 is a schematic diagram of a primary and secondary cell change system in an embodiment of the present disclosure; and

fig. 9 shows a block diagram of an electronic device in an embodiment of the present disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.

To facilitate understanding, the following first explains several terms referred to in the present disclosure:

DC (Dual connectivity, double link) connects MCG and SCG at the same time.

The MCG (Master Cell group) includes one or more cells, which is a group in which a Cell in which a terminal first initiates a random access procedure is located;

a PCell (Primary Cell) terminal is a Cell used for initiating initial access in an MCG, and is the most 'main' Cell in the MCG; the cells in the MCG except the PCell are scells (Secondary cells); the PCell and the SCell are joined together by a CA (Carrier aggregation) technique.

The SCG (Secondary Cell group) comprises one or more cells, and is a Cell group added after the terminal establishes connection with the MCG; the cells of the SCG are neighbor cells in relation to the cells of the MCG.

A PSCell (Primary Secondary Cell) is a Cell where a terminal starts to access under an SCG, and is the most "Primary" Cell of the SCG; cells in the SCG except for the PSCell are scells (Secondary cells); the PSCell and SCell are joined together by CA technology.

A Master Node (MN) serves as a node of the MCG, and is a base station that initiates a random access procedure first in two base stations providing a dual-link service to a terminal, and a main task is to provide data traffic bearer.

The Secondary Node (SN) serves as a node of the SCG, and is a base station that does not carry control plane signaling, among two base stations providing the dual link service to the terminal.

The core idea of a CPAC (Conditional primary and secondary cell Addition or Change) mechanism is that a plurality of candidate pscells are configured, and when a terminal evaluates that a certain candidate PScell meets a trigger condition, the terminal directly initiates random access to the PScell and does not evaluate the trigger conditions of other candidate cells.

The present exemplary embodiment will be described in detail below with reference to the drawings and examples.

First, the embodiments of the present disclosure provide a method for adding or changing a primary cell and a secondary cell, which may be performed by any electronic device with computing processing capability.

Fig. 1 shows a flowchart of a method for adding or changing a primary cell and a secondary cell in an embodiment of the present disclosure, and as shown in fig. 1, the method for adding or changing a primary cell and a secondary cell provided in the embodiment of the present disclosure includes the following steps:

s102, receiving conditional primary and secondary cell adding or CPAC configuration information sent by a master node, wherein the CPAC configuration information comprises one or more of the following information:

indication information indicating that the terminal continuously executes CPAC;

the maximum value of the CPAC process is as follows: the number of CPAC procedures that the terminal can support to execute continuously at most;

and S104, executing the instruction in the CPAC configuration information according to the CPAC configuration information.

In one embodiment, a radio resource control RRC signaling sent by a master node is received, where the RRC signaling carries CPAC configuration information.

In one embodiment, the RRC signaling includes, but is not limited to: the number of execution of the CPAC flow or release of the CPAC configuration indication information.

In one embodiment, the CPAC configuration information further includes an identifier or index of the candidate cell and a CPAC execution condition corresponding to the candidate cell.

It should be noted that the core idea of a CPAC (Conditional primary and secondary cell Addition or Change) mechanism is to configure multiple candidate pscells, and when a terminal evaluates that a certain candidate PScell meets a trigger condition, the terminal directly initiates random access to the PScell.

It should be noted that the indication information indicating that the terminal continuously executes the CPAC is used to indicate that the terminal continuously executes the CPAC procedure, and the indication information indicating that the terminal continuously executes the CPAC may be a request CPAC indicator IE.

In an embodiment, the indication information indicating that the terminal continuously executes the CPAC may include number information indicating that the terminal continuously executes the CPAC procedure, the terminal receives the indication information indicating that the terminal continuously executes the CPAC procedure, which is sent by the master node, the terminal continuously executes the CPAC procedure, and when a certain condition is met, for example, the number of times that the terminal continuously executes the CPAC procedure is reached, the indication information indicating that the terminal continuously executes the CPAC is released.

In one embodiment, the time information may be set manually or automatically.

It should be noted that the Maximum value of the CPAC procedure is used to indicate that the terminal performs at most the Number of CPAC procedures continuously, and the Maximum value of the CPAC procedure may be Maximum Number of frequency CPAC IE.

In one embodiment, a terminal receives a maximum CPAC flow sent by a master node, acquires corresponding indication information for continuously executing the CPAC flow according to the maximum CPAC flow, judges whether the execution quantity of the CPAC flow exceeds the maximum CPAC flow, and sends a signaling to the master node and releases CPAC configuration if the execution quantity of the CPAC flow exceeds the maximum CPAC flow.

In an embodiment, fig. 2 shows a flowchart of another method for adding or changing a primary cell and a secondary cell in an embodiment of the present disclosure, and as shown in fig. 2, the method for adding or changing a primary cell and a secondary cell provided in the embodiment of the present disclosure includes the following steps:

s202, receiving CPAC configuration information sent by a master node, wherein the CPAC configuration information comprises indication information indicating that a terminal continuously executes CPAC and a maximum value of a CPAC process;

s204, continuously executing a CPAC process according to the indication information indicating that the terminal continuously executes the CPAC;

s206, judging whether the execution quantity of the CPAC flows exceeds the maximum value of the CPAC flows;

s208, if yes, signaling is sent to the master node, and CPAC configuration is released;

s210, otherwise, keeping or storing the CPAC configuration information, and continuing to monitor the state of the candidate cell.

In one embodiment, when the terminal successfully accesses the target primary and secondary cells or fails to access the target primary and secondary cells, the target primary and secondary cells return successful or failed access information to the terminal, if the CPAC configuration information is not changed, the terminal keeps the CPAC configuration information, and if the CPAC configuration information is changed, the terminal saves the CPAC configuration information.

In one embodiment, receiving the CPAC configuration information sent by the master node comprises: and sending a first signaling to the master node, wherein the first signaling indicates that the current terminal of the master node receives the CPAC configuration information.

In one embodiment, the signaling to the primary node and the releasing of the CPAC configuration comprises: and sending a second signaling to the master node, wherein the second signaling indicates that the current CPAC execution times of the master node reaches the maximum CPAC process.

In one embodiment, the first signaling, the second signaling may be RRC signaling.

In the above embodiment, the terminal stores CPAC configuration as required according to the CPAC configuration information newly added in the RRC message, and configures a plurality of candidate primary and secondary cells for the terminal, and allows the terminal to execute a continuous CPAC flow according to the indication of the network side and the pre-configured decision condition, so that the base station can implement a plurality of primary and secondary cell change flows through one RRC configuration, thereby reducing signaling overhead, reducing the primary and secondary cell change delay under the MR-DC architecture, and improving user experience.

Fig. 3 is a flowchart illustrating a method for randomly accessing a primary cell and a secondary cell in an embodiment of the present disclosure, and as shown in fig. 3, the method for randomly accessing the primary cell and the secondary cell provided in the embodiment of the present disclosure is applied to a terminal, and includes the following steps:

and S302, when the CPAC execution condition is met, initiating a random access process to the target primary and secondary cells.

It should be noted that, according to the CPAC execution condition, it is determined when and/or whether to execute the corresponding primary and secondary cell add/change command.

In one embodiment, the terminal evaluates CPAC execution conditions, initiates a random access process to a target primary and secondary cell when the evaluation meets one or more execution conditions, and reports target primary and secondary cell information to a primary node through RRC signaling.

S304, reporting the selected target main and auxiliary cell information to the main node.

It should be noted that the target primary and secondary cell information includes, but is not limited to: target primary and secondary cell identification information.

In the above embodiment, the terminal initiates the random access procedure to the target primary and secondary cells and reports the selected target primary and secondary cell information to the master node under the condition that the CPAC execution condition is satisfied, so that the access efficiency of the target primary and secondary cells can be improved.

In one embodiment, a method for adding or changing a primary cell and a secondary cell is further provided, which is applied to a primary node and includes:

sending CPAC configuration information to the terminal, wherein the CPAC configuration information comprises one or more of the following information:

indication information indicating that the terminal continuously executes CPAC;

the maximum value of the CPAC process is the maximum number of continuously executing CPAC processes which can be supported by the terminal.

In the above embodiment, the master node sends CPAC configuration information to the terminal, the terminal stores CPAC configuration as needed according to the CPAC configuration information, and by configuring a plurality of candidate master and slave cells for the terminal and allowing the terminal to execute a continuous CPAC flow according to the indication of the network side and the pre-configured decision condition, the base station can realize multiple master and slave cell change flows through one RRC configuration, thereby reducing signaling overhead and reducing master and slave cell change delay under an MR-DC framework.

Fig. 4 shows a flowchart of a method for sending CPAC configuration information in an embodiment of the present disclosure, and as shown in fig. 4, the method for sending CPAC configuration information provided in the embodiment of the present disclosure includes the following steps:

s402, receiving a measurement report reported by a terminal;

it should be noted that, the terminal measures the signal quality of the neighboring cell and the serving cell according to the system broadcast or the advanced measurement configuration in the RRC release message in the idle state and the inactive state; when the terminal enters a connection state, the terminal directly reports the measurement report, so that auxiliary information is provided for adding auxiliary nodes and auxiliary cells on the network side, and the time delay of establishing the MR-DC is further reduced.

S404, judging whether to send CPAC configuration information to the terminal;

in one embodiment, whether to send CPAC configuration information to the terminal is determined according to one or more of the following information;

a measurement report;

feedback information of the candidate target node;

actually deploying scene data;

terminal performance data;

other information that may affect the CPAC configuration.

The feedback information of the candidate target node is access feedback information of the candidate target node, and the like.

It should be noted that the actual deployment scenario data is

The terminal performance data is the transmission rate of the terminal, and the like.

S406, CPAC configuration information is sent to the terminal.

In the above embodiment, the master node determines whether to send CPAC configuration information to the terminal according to information that may affect the CPAC configuration, and sends the CPAC configuration information when the sending condition is satisfied, thereby reducing cost and saving resources.

Fig. 5 is a flowchart of another method for adding or changing a primary cell and a secondary cell in an embodiment of the present disclosure, and as shown in fig. 5, the method for adding or changing a primary cell and a secondary cell provided in the embodiment of the present disclosure includes the following steps:

s502, the main node sends RRC signaling to the terminal, and the RRC signaling carries CPAC configuration information.

In one embodiment, the CPAC configuration information includes, but is not limited to: the terminal is instructed to continuously execute CPAC and the terminal can be supported by the maximum number of continuously executing CPAC flows.

It should be noted that the indication information of the maximum number of continuously executed CPAC procedures supportable by the terminal includes the maximum number of continuously executed CPAC procedures supportable by the terminal.

S504, the terminal receives the RRC signaling, stores CPAC configuration information according to the CPAC configuration information in the RRC signaling, and continuously executes a CPAC process according to the CPAC configuration information;

s506, the terminal judges whether the execution quantity of the CPAC flows exceeds the maximum quantity of the CPAC flows which can be continuously executed and supported by the terminal, if so, the terminal informs the master node that the current CPAC flow execution quantity exceeds the maximum quantity of the CPAC flows which can be continuously executed and supported by the terminal through RRC signaling and releases CPAC configuration information.

In the above embodiment, in a high-frequency millimeter wave dual-link scene, the low frequency of the primary base station ensures coverage, the high frequency of the secondary base station increases capacity, the coverage radius of the secondary cell becomes smaller and smaller as the application frequency point becomes higher and higher, and the signaling overhead and the time delay of the change of the primary and secondary cells can be effectively reduced by means of once configuration of RRC signaling and CPAC configuration stored by the terminal, so that the flexibility of the change of the primary and secondary cells is improved, and the user service experience is improved.

Fig. 6 is a schematic flow chart illustrating a method for a terminal to execute a continuous CPAC mechanism signaling in the embodiment of the present disclosure, where the embodiment of the present disclosure takes an inter-SN scenario and a CPAC flow threshold as 2 as an example, and as shown in fig. 6, the method for the terminal to execute the continuous CPAC mechanism signaling in the embodiment of the present disclosure includes the following steps:

s602, the terminal reports the measurement report to the main node;

and S604, the network side determines whether the terminal continuously executes the CPAC process based on the measurement report and the actual data, and if the initial state is double connection, the master node and the source auxiliary node jointly determine the CPAC process.

It should be noted that the actual data includes, but is not limited to: actual deployment scene data and terminal mobile performance data.

And S606, if yes, the master node carries CPAC configuration information through RRC signaling and sends the CPAC configuration information to the terminal.

In one embodiment, the CPAC configuration information comprises: and indicating the terminal to continuously execute the CPAC indication information and indicating the maximum number of continuous CPAC execution processes which can be supported by the terminal.

S608, the terminal feeds back RRC signaling to the main node to indicate that the terminal receives the current CPAC configuration information;

s610, the terminal evaluates CPAC execution conditions;

s612, when the evaluation meets one or more execution conditions, initiating a random access process to the first target primary and secondary cell, and reporting the information of the first target primary and secondary cell to the master node through RRC signaling;

s614, the terminal randomly accesses the auxiliary node T-SN1;

and S616, after the terminal is successfully or unsuccessfully accessed to the first target primary and secondary cell, the terminal keeps or stores the CPAC configuration information.

It should be noted that the first target primary and secondary cells correspond to the secondary node T-SN 1.

S618, the terminal evaluates the CPAC execution condition;

s620, when the evaluation meets one or more execution conditions, a random access process is initiated to the second target main and auxiliary cells, and the information of the second target main and auxiliary cells is reported to the main node through RRC signaling;

and S622, the terminal randomly accesses the auxiliary node T-SN2.

It should be noted that the second target primary and secondary cells correspond to the secondary node T-SN2.

S624, the terminal judges whether the execution quantity of the CPAC flows exceeds the quantity indicating that the maximum CPAC flows can be continuously executed by the terminal, if so, the CPAC configuration information is released;

s626, the terminal informs the master node that the current CPAC procedure execution number has exceeded the maximum number of continuous CPAC procedures that can be supported by the terminal through RRC signaling.

In the above embodiment, the network instructs the terminal to perform a continuous CPAC procedure through RRC signaling; the capability of the terminal is improved, the terminal supports keeping or storing the CAPC configuration according to the RRC signaling related indication, continuously monitors the trigger condition, continuously executes the CPAC flow according to the requirement, effectively reduces the configuration time delay and the signaling load of the network, can be well compatible with the existing protocol, and has strong practicability.

Based on the same inventive concept, the embodiment of the present disclosure further provides a primary and secondary cell changing apparatus, such as the following embodiments. Because the principle of the embodiment of the apparatus for solving the problem is similar to that of the embodiment of the method, the embodiment of the apparatus can be implemented by referring to the implementation of the embodiment of the method, and repeated details are not described again.

Fig. 7 is a schematic diagram of a primary and secondary cell changing apparatus in an embodiment of the present disclosure, and as shown in fig. 5, the primary and secondary cell changing apparatus 7 includes: a CPAC configuration information receiving module 701, a CPAC flow continuous execution module 702, and a CPAC flow maximum value judgment module 703.

A CPAC configuration information receiving module 701, configured to receive conditional primary and secondary cell addition or CPAC configuration information change sent by a master node, where the CPAC configuration information includes one or more of the following information:

indication information indicating that the terminal continuously executes CPAC;

maximum CPAC process, the maximum CPAC process is the maximum number of continuously executing CPAC processes which can be supported by the terminal;

a CPAC flow continuous execution module 702, executing the CPAC flow according to the indication information of the indication terminal continuously executing the CPAC;

the CPAC flow maximum value determining module 703 determines whether the execution number of the CPAC flows exceeds the CPAC flow maximum value, and if so, sends a signaling to the master node and releases the CPAC configuration.

In the above embodiment, the terminal stores CPAC configuration as needed according to the CPAC configuration information newly added in the RRC message, and configures a plurality of candidate primary and secondary cells for the terminal, and allows the terminal to execute a continuous CPAC flow according to the indication of the network side and the preconfigured decision condition, so that the base station can change the flow of the primary and secondary cells for a plurality of times through one RRC configuration, thereby reducing signaling overhead, reducing the time delay of the primary and secondary cell change under the MR-DC architecture, and improving user experience.

Based on the same inventive concept, the embodiment of the present disclosure further provides a primary and secondary cell changing system, such as the following embodiments. Because the principle of the system embodiment for solving the problem is similar to that of the method embodiment, the implementation of the system embodiment may refer to the implementation of the method embodiment, and repeated details are not described again.

Fig. 8 is a schematic diagram of a primary and secondary cell changing system in an embodiment of the present disclosure, and as shown in fig. 6, the primary and secondary cell changing system 8 includes: terminal 801, master node 802.

The terminal 801 receives the CPAC configuration information sent by the master node 802, continuously executes CPAC processes according to the CPAC configuration information, releases the CPAC configuration information when the execution number of the CPAC processes reaches the maximum value of the CPAC processes, and sends a second signaling to the master node 802 to indicate that the execution times of the CAPC processes reach the maximum value; when the CPAC execution condition is met, initiating random access information to the target primary and secondary cells;

a master node 802 that determines whether the terminal 801 is configured to continuously execute a CPAC process; sending CPAC configuration information to terminal 801; the signaling sent by the terminal 801 is received.

The terminal device may be a variety of electronic devices including, but not limited to, a smart phone, a tablet computer, a laptop portable computer, a desktop computer, and the like.

The network serves as a medium for providing a communication link between the terminal device and the server.

Optionally, the wireless network described above uses standard communication techniques and/or protocols. The dual link scenario includes, but is not limited to: LTE-NR DC, NR-LTE DC, NR-NR DC; wherein LTE-NR DC, LTE is MCG and NG is SCG; NR-LTE DC, NR is MCG and LTE is SCG; NR-NR DC, MCG and SCG are all NR.

In some embodiments, data exchanged over a network is represented using techniques and/or formats including Hypertext Mark-up Language (HTML), extensible markup Language (XML), and the like. All or some of the links may also be encrypted using conventional encryption techniques such as Secure Socket Layer (SSL), transport Layer Security (TLS), virtual Private Network (VPN), internet protocol Security (IPsec). In other embodiments, custom and/or dedicated data communication techniques may also be used in place of, or in addition to, the data communication techniques described above.

Optionally, the clients of the applications installed in different terminal devices are the same, or clients of the same type of application based on different operating systems. The specific form of the application client may also be different based on different terminal platforms, for example, the application client may be a mobile phone client, a PC client, or the like.

The server may be a server that provides various services, such as a background management server that provides support for devices operated by the user with the terminal device. The background management server can analyze and process the received data such as the request and feed back the processing result to the terminal equipment.

Optionally, the server may be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, or a cloud server providing basic cloud computing services such as a cloud service, a cloud database, cloud computing, a cloud function, cloud storage, a Network service, cloud communication, a middleware service, a domain name service, a security service, a CDN (Content Delivery Network), a big data and artificial intelligence platform, and the like. The terminal may be, but is not limited to, a smart phone, a tablet computer, a notebook computer, a desktop computer, etc. The terminal and the server may be directly or indirectly connected through wired or wireless communication, and the application is not limited herein.

Those skilled in the art will appreciate that the number of terminal devices, networks, and servers is merely illustrative and that there may be any number of terminal devices, networks, and servers, as desired. This is not limitative.

As will be appreciated by one skilled in the art, aspects of the present disclosure may be embodied as a system, method or program product. Accordingly, various aspects of the present disclosure may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.

An electronic device 900 according to this embodiment of the disclosure is described below with reference to fig. 9. The electronic device 900 shown in fig. 9 is only an example and should not bring any limitations to the functionality or scope of use of the embodiments of the present disclosure.

As shown in fig. 9, the electronic device 900 is embodied in the form of a general purpose computing device. Components of electronic device 900 may include, but are not limited to: the at least one processing unit 910, the at least one memory unit 920, and the bus 930 that couples the various system components including the memory unit 920 and the processing unit 910.

Wherein the storage unit stores program code that is executable by the processing unit 910 to cause the processing unit 910 to perform steps according to various exemplary embodiments of the present disclosure described in the above section "exemplary method" of the present specification.

For example, the processing unit 910 may perform the following steps of the above method embodiments: receiving conditional primary and secondary cell adding or changing CPAC configuration information sent by a master node, wherein the CPAC configuration information comprises one or more of the following information: indication information indicating that the terminal continuously executes CPAC; the maximum value of the CPAC process is as follows: the maximum number of continuous CPAC procedures that the terminal can support.

For example, the processing unit 910 may perform the following steps of the above method embodiments: and judging whether the execution quantity of the CPAC flows exceeds the maximum value of the CPAC flows, if so, sending a signaling to the main node, and releasing the CPAC configuration.

For example, the processing unit 910 may perform the following steps of the above method embodiments: and when the execution quantity of the CPAC flows does not exceed the maximum CPAC flow, reserving or storing the CPAC configuration information and continuously monitoring the state of the candidate cell.

For example, the processing unit 910 may perform the following steps of the above method embodiments: when the CPAC execution condition is met, initiating a random access process to the target primary and secondary cells; and reporting the selected target main and auxiliary cell information to the main node.

For example, the processing unit 910 may perform the following steps of the above method embodiments: sending CPAC configuration information to a terminal, wherein the CPAC configuration information comprises one or more of the following information: indication information indicating that the terminal continuously executes CPAC; and maximum CPAC process, wherein the maximum CPAC process is the maximum number of continuously executing CPAC processes which can be supported by the terminal.

For example, the processing unit 910 may perform the following steps of the above method embodiments: the terminal reports the measurement report to the main node; and the network side determines whether the terminal continuously executes the CPAC process or not based on the measurement report and the actual data, and if the initial state is double connection, the master node and the source auxiliary node jointly determine. If yes, the master node carries CPAC configuration information through RRC signaling and sends the CPAC configuration information to the terminal.

The terminal feeds back an RRC signaling to the master node to indicate that the terminal receives the current CPAC configuration information; the terminal evaluates CPAC execution conditions; when the evaluation meets one or more execution conditions, initiating a random access process to a first target main and auxiliary cell, and reporting information of the first target main and auxiliary cell to a main node through RRC signaling; the terminal randomly accesses to an auxiliary node T-SN1; after the terminal is successfully or unsuccessfully accessed to the first target primary and secondary cell, the terminal keeps or stores CPAC configuration information; the terminal evaluates CPAC execution conditions; when the evaluation meets one or more execution conditions, initiating a random access process to a second target main and auxiliary cell, and reporting information of the second target main and auxiliary cell to a main node through RRC signaling; the terminal randomly accesses to an auxiliary node T-SN2; the terminal judges whether the execution quantity of the CPAC flows exceeds the quantity of the maximum continuous execution CPAC flows which can be supported by the indication terminal, if so, the CPAC configuration information is released; the terminal informs the main node that the execution quantity of the current CPAC flows exceeds the quantity of the maximum continuous execution CPAC flows which can be supported by the terminal through RRC signaling.

The storage unit 920 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 9201 and/or a cache memory unit 9202, and may further include a read only memory unit (ROM) 9203.

Storage unit 920 may also include a program/utility 9204 having a set (at least one) of program modules 9205, such program modules 9205 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.

Bus 930 can be any type representing one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

The electronic device 900 may also communicate with one or more external devices 940 (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 900, and/or any device (e.g., router, modem, etc.) that enables the electronic device 900 to communicate with one or more other computing devices. Such communication may occur via input/output (I/O) interface 950.

Also, the electronic device 900 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the Internet) via the network adapter 960. As shown, the network adapter 960 communicates with the other modules of the electronic device 900 via the bus 930. It should be appreciated that although not shown, other hardware and/or software modules may be used in conjunction with the electronic device 900, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.

Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.

In an exemplary embodiment of the present disclosure, there is also provided a computer-readable storage medium, which may be a readable signal medium or a readable storage medium. On which a program product capable of implementing the above-described method of the present disclosure is stored. In some possible embodiments, various aspects of the disclosure may also be implemented in the form of a program product comprising program code for causing a terminal device to perform the steps according to various exemplary embodiments of the disclosure described in the "exemplary methods" section above of this specification, when the program product is run on the terminal device.

More specific examples of the computer-readable storage medium in the present disclosure may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

In the present disclosure, a computer readable storage medium may include a propagated data signal with readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Alternatively, program code embodied on a computer readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

In particular implementations, program code for carrying out operations of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + +, or the like, as well as conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server.

In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).

It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functions of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.

Moreover, although the steps of the methods of the present disclosure are depicted in the drawings in a particular order, this does not require or imply that the steps must be performed in this particular order, or that all of the depicted steps must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.

Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A method for adding or changing a primary cell and a secondary cell is applied to a terminal and comprises the following steps:

indication information indicating that the terminal continuously executes CPAC;

maximum value of CPAC process, which is: the maximum number of continuous CPAC procedures that the terminal can support.

2. The primary-secondary cell addition or change method of claim 1, further comprising: and judging whether the execution quantity of the CPAC flows exceeds the maximum value of the CPAC flows, if so, sending a signaling to the main node, and releasing the CPAC configuration.

3. The primary-secondary cell adding or changing method according to claim 1, further comprising: and receiving a Radio Resource Control (RRC) signaling sent by the main node, wherein the RRC signaling carries the CPAC configuration information.

4. The primary-secondary cell addition or change method of claim 1, further comprising:

5. The primary-secondary cell addition or change method of claim 1, further comprising:

6. The method of claim 1, wherein the CPAC configuration information comprises an identifier or index of a candidate cell and a CPAC execution condition corresponding to the candidate cell.

7. The primary and secondary cell adding or changing method according to claim 1, wherein the receiving CPAC configuration information sent by the primary node comprises:

8. The primary-secondary cell addition or change method according to claim 2, wherein the sending the signaling to the primary node is followed by:

9. A method for adding or changing a primary cell and a secondary cell is applied to a primary node and comprises the following steps:

indication information indicating that the terminal continuously executes CPAC;

10. The primary and secondary cell adding or changing method according to claim 9, wherein the sending CPAC configuration information to the terminal is preceded by:

receiving a measurement report reported by a terminal;

the measurement report;

feedback information of the candidate target node;

actually deploying scene data;

terminal performance data.

11. A primary and secondary cell addition or change system, comprising:

12. A primary and secondary cell addition or change apparatus, comprising:

the CPAC configuration information receiving module is used for receiving conditional primary and secondary cell adding or CPAC configuration information sent by a master node, wherein the CPAC configuration information comprises one or more of the following information:

indication information indicating that the terminal continuously executes CPAC;

the CPAC flow continuous execution module is used for executing a CPAC flow according to the indication information of the indication terminal continuously executing the CPAC;

and the CPAC flow maximum judgment module is used for judging whether the execution quantity of the CPAC flows exceeds the CPAC flow maximum, if so, sending a signaling to the main node and releasing the CPAC configuration.

13. An electronic device, comprising:

a processor; and

a memory for storing executable instructions of the processor;

wherein the processor is configured to perform the primary and secondary cell addition or change method of any one of claims 1 to 10 via execution of the executable instructions.

14. A computer-readable storage medium on which a computer program is stored, the computer program, when being executed by a processor, implementing a primary and secondary cell addition or change method according to any one of claims 1 to 10.