CN108365908B

CN108365908B - Information sending and receiving method and device

Info

Publication number: CN108365908B
Application number: CN201710061839.XA
Authority: CN
Inventors: 孙伟; 郭志恒; 谢信乾
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-01-26
Filing date: 2017-01-26
Publication date: 2020-03-10
Anticipated expiration: 2037-01-26
Also published as: CN108365908A

Abstract

The embodiment of the invention discloses a method and a device for sending and receiving information. The information sending method comprises the following steps: the method comprises the steps that first access network equipment determines first indication information of a data service, wherein the first indication information comprises resource position indication information of the data service and second indication information indicating whether the data service is an uplink data service or a downlink data service; and the first access network equipment sends the first indication information to second access network equipment. The technical scheme of the embodiment of the invention can solve the problem that after the flexible duplex technology is adopted, the different-direction interference occurs between the access network equipment of the adjacent cells and between the terminal equipment of the adjacent cells.

Description

Information sending and receiving method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information sending and receiving method and apparatus.

Background

Different Duplex modes exist in a wireless communication system, and the Duplex modes can be divided into a Frequency Division Duplex (FDD) mode and a Time Division Duplex (TDD) mode.

For a wireless communication system operating in TDD mode, the whole frequency band can be used for downlink transmission only or uplink transmission only for a period of time, and for an area covered by the same frequency band, all cells in the area must be simultaneously downlink transmission or simultaneously uplink transmission for the same period of time. For a wireless communication system operating in FDD mode, two paired frequency bands exist at the same time for information transmission, and the bandwidths of the downlink frequency band and the uplink frequency band in the paired frequency bands are often the same. One of the frequency bands is used for downlink transmission from the access network device to the terminal device, and the other frequency band is used for uplink transmission from the terminal device to the access network device. Considering that terminal devices in a wireless communication system are unevenly distributed, communication services are also large in different diameters, the difference between downlink traffic and uplink traffic of cells under the coverage of the same frequency band or paired frequency bands at the same time is large, all cells adopt the same uplink and downlink transmission configuration, the service requirements of each cell cannot be met efficiently, and the network transmission efficiency is not high.

In the related art, in order to improve the network transmission efficiency, a flexible duplex technology may be adopted to configure the transmission of each cell individually. Specifically, for a wireless communication system operating in the TDD mode, a Transmission direction in each Transmission Time Interval (TTI) may be determined according to a ratio of uplink and downlink services in each cell. For a wireless communication system working in an FDD mode, the transmission time of transmitting downlink data by using an uplink frequency band or transmitting uplink data by using a downlink frequency band in each cell can be determined according to the proportion of uplink and downlink services in each cell.

However, the inventors found in the process of implementing the present invention that: after the flexible duplex technology is adopted, although the network transmission efficiency can be improved, no matter the wireless communication system works in the FDD mode or the TDD mode, the access network devices of the adjacent cells do not know the resource use condition of each other, and the resource use mode on the same resource cannot be determined according to the resource use condition of each other. Therefore, when resource scheduling is performed by the access network equipment of the adjacent cell, the situation that the transmission directions of the adjacent cells are different in the same frequency band and at the same time may occur, that is, some cells of the adjacent cells perform downlink transmission from the access network equipment to the terminal equipment in the same frequency band and at the same time, and some cells perform uplink transmission from the terminal equipment to the access network equipment. In this case, the access network device of the downlink transmission cell interferes with the access network device of the uplink transmission cell, and the terminal device of the uplink transmission interferes with the terminal device of the downlink transmission, so that the heterodromous interference occurs.

Disclosure of Invention

The embodiment of the invention provides an information sending and receiving method and device, which are used for avoiding the occurrence of different-direction interference between access network equipment of adjacent cells and between terminal equipment of the adjacent cells after a flexible duplex technology is adopted.

In a first aspect, an embodiment of the present invention provides an information sending method, including:

the method comprises the steps that first access network equipment determines first indication information of a data service, wherein the first indication information comprises resource position indication information of the data service and second indication information indicating whether the data service is an uplink data service or a downlink data service;

and the first access network equipment sends the first indication information to second access network equipment.

First, a first access network device determines first indication information of a data service, where the first indication information includes resource location indication information of the data service and second indication information indicating whether the data service is an uplink data service or a downlink data service. And then the first access network equipment sends the first indication information to the second access network equipment. The second access network device determines the resource indicated by the resource location indication information, and determines whether the data service is an uplink data service or a downlink data service according to the second indication information, that is, the second access network device can know the resource usage of the first access network device. In the embodiment of the present invention, the second access network device can know the resource usage of the first access network device, so that the second access network device can determine the resource usage of the second access network device on the same resource according to the resource usage of the first access network device, so as to avoid the occurrence of the alien interference between the first access network device and the second access network device, and between the first access network device and the terminal device of the cell in which the second access network device is located. The first access network device and the second access network device are access network devices of adjacent cells. In the embodiment of the present invention, before transmitting the data service, the first access network device sends the first indication information to the second access network device of the neighboring cell of the cell in which the first access network device is located, so that the second access network device takes a corresponding interference coordination action. Therefore, the embodiment of the invention can solve the problem that the different-direction interference occurs between the access network equipment of the adjacent cells and between the terminal equipment of the adjacent cells after the flexible duplex technology is adopted.

Optionally, in a specific implementation manner of the embodiment of the present invention, the second indication information indicates that the data service is an uplink data service, where determining, by the first access network device, the first indication information of the data service includes:

and the first access network equipment receives transmission parameters sent by terminal equipment, wherein the transmission parameters comprise the resource position indication information.

In this embodiment, when receiving the transmission parameter sent by the terminal device, the first access network device may obtain that the data service is an uplink data service, and accordingly obtain the second indication information. In other words, in this embodiment, the first access network device may determine the first indication information according to the received transmission parameter sent by the terminal device, and the second indication information in the first indication information indicates that the data service is the uplink data service. The terminal device in this embodiment is a terminal device accessing to a first access network.

Optionally, in another specific implementation manner of the embodiment of the present invention, the determining, by the first access network device, the first indication information of the data service includes:

and the first access network equipment determines the first indication information according to scheduling.

In this embodiment, the first access network device may obtain the second indication information according to the transmission direction of the data service. Meanwhile, resources can be allocated to the data service through scheduling, and resource position indication information can be obtained according to the resource positions of the allocated resources.

Optionally, in a specific implementation manner of the embodiment of the present invention, sending, by the first access network device, the first indication information to the second access network device includes:

and the first access network equipment sends the first indication information to the second access network equipment in a broadcast mode through an air interface.

Optionally, in another specific implementation manner of the embodiment of the present invention, the sending, by the first access network device, the first indication information to the second access network device includes:

and the first access network equipment sends the first indication information to the second access network equipment through preset resources.

In this embodiment, the first access network device sends the first indication information to the second access network device by using the preset resource. Because the first access network device does not need to temporarily schedule resources for the first indication information when sending the first indication information, the first access network device can send the first indication information to the second access network device as soon as possible after obtaining the first indication information, and the time delay of sending the first indication information to the second access network device by the first access network device is reduced. The preset resources in this embodiment may be time-frequency resources of a physical downlink control channel, time-frequency resources of a physical uplink control channel, reserved time-domain resources, and/or frequency-domain resources, etc. The specific embodiment does not limit the location of the preset resource. In addition, the preset resource may also be used to send other data (such as control information, service data, and the like), and when the preset resource needs to send other data and the first indication information at the same time, the first access network device sends the first indication information to the second access network device. Therefore, the utilization rate of the preset resources can be improved, and the first indication information can be sent to the second access network equipment in time.

and the first access network equipment sends the first indication information to the second access network equipment through time-frequency resources of a physical downlink control channel.

In this embodiment, the time-frequency resource of the physical downlink control channel may also be used to send downlink control information, and when the time-frequency resource of the physical downlink control channel needs to send the downlink control information and the first indication information at the same time, the first access network device sends the first indication information to the second access network device. Therefore, the utilization rate of the time-frequency resource of the physical downlink control channel can be improved, and the first indication information can be sent to the second access network equipment in time.

and the first access network equipment sends the first indication information to the second access network equipment through time-frequency resources of a physical uplink control channel.

In this embodiment, the time-frequency resource of the physical uplink control channel may also be used to send uplink control information, and when the time-frequency resource of the physical uplink control channel needs to send the uplink control information and the first indication information at the same time, the first access network device sends the first indication information to the second access network device. Therefore, the utilization rate of the time-frequency resource of the physical uplink control channel can be improved, and the first indication information can be sent to the second access network equipment in time.

and the first access network equipment sends the first indication information to the second access network equipment through the reserved time domain resources and/or frequency domain resources.

In this embodiment, the reserved time domain resource is a reserved symbol resource, the reserved frequency domain resource is a reserved frequency resource (e.g., a reserved resource block), and the reserved time domain resource and the reserved frequency domain resource are resources for determining a frequency range and a time interval. The reserved time domain resources and/or frequency domain resources may also be used to send other data (such as control information, service data, and the like), and when the reserved time domain resources and/or frequency domain resources simultaneously need to send other data and the first indication information, the first access network device sends the first indication information to the second access network device. Therefore, the reserved time domain resources and/or the utilization rate of the frequency domain resources can be improved, and the first indication information can be sent to the second access network equipment in time.

Optionally, in another specific implementation manner of the embodiment of the present invention, the reserved time-frequency resources are in a small time slot, where one small time slot includes L symbols, and L is any one value from 1 to (X-1), where X is a total number of symbols of one time slot.

In this embodiment, the first access network device sends the first indication information to the second access network device in a small time slot resource manner, which can reduce the transmission delay of the first indication information, so that the first access network device can send the first indication information to the second access network device in time.

and the first access network equipment sends the first indication information to the second access network equipment through first sending power, wherein the first sending power is less than or equal to a preset threshold value.

In this embodiment, when the resource used by the first access network device to send the first indication information to the second access network device is an uplink resource, the first access network device sends the first indication information to the second access network device by using the first sending power less than or equal to the preset threshold, so that the occurrence of the anisotropic interference in the uplink resource between the first access network device and the second access network device can be avoided. The preset threshold value may be less than or equal to the transmission power of the terminal device.

the first access network device sends the first indication information to the second access network device by adopting a predefined transmission format, wherein the predefined transmission format comprises at least one of a predefined coding modulation mode and a predefined beam direction.

In this embodiment, the first access network device adopts a predefined transmission format when sending the first indication information to the second access network device, which is beneficial for the second access network device to detect the first indication information, thereby reducing the time delay of the interference scheduling behavior of the second access network device.

Optionally, in another specific implementation manner of the embodiment of the present invention, the first indication information further includes: at least one of service class indication information, beam direction indication information, modulation mode indication information and antenna port indication information of the data service.

Optionally, in another specific implementation manner of the embodiment of the present invention, before the sending, by the first access network device, the first indication information to the second access network device, the method further includes:

the first access network equipment determines that the data service is an uplink data service, and the resource indicated by the resource position indication information is a downlink resource; or

And the first access network equipment determines that the data service is a downlink data service, and the resource indicated by the resource position indication information is an uplink resource.

In this embodiment, only when the first access network device determines that the data service is an uplink data service, the resource indicated by the resource location indication information is a downlink resource; or the first access network device determines that the data service is a downlink data service, and the first access network device sends the first indication information to the second access network device only when the resource indicated by the resource position indication information is an uplink resource, so the specific implementation method can reduce the data transmission amount between the first access network device and the second access network device, and reduce the load of the wireless communication system.

Optionally, in another specific implementation manner of the embodiment of the present invention, the method further includes:

and when the first access network equipment determines that the data service transmission is finished, the first access network equipment sends an interference coordination release instruction corresponding to the data service to the second access network equipment.

In this implementation, the interference coordination release instruction may include resource location indication information, or first indication information identifier information sent by the first access network device to the second access network device, and the like. In this embodiment, when the first access network device completes transmission of the data service, the second access network device may release the interference coordination behavior according to the interference coordination release instruction sent by the first access network device, and then the second access network device may normally use the resource corresponding to the interference coordination behavior, thereby increasing the network transmission rate.

the first access network equipment receives an avoidance instruction which is sent by the second access network equipment and corresponds to the data service;

and the first access network equipment stops transmitting the data service according to the avoidance instruction or allocates new resources for the data service.

In this embodiment, if the second access network device is using the resource indicated by the resource location indication information, or the second access network device may use the resource only with the resource indicated by the resource location indication information, and the second access network device needs to transmit the emergency data service, the second access network device may send a corresponding avoidance instruction to the first access network device. When receiving the avoidance instruction, the first access network device may stop transmitting the data service, or allocate a new resource to the data service, so as to avoid occurrence of the anisotropic interference in the resource indicated by the resource location indication information between the first access network device and the second access network device.

In a second aspect, an embodiment of the present invention provides an information receiving method, including:

the method comprises the steps that a second access network device receives first indication information sent by a first access network device, wherein the first indication information comprises resource position indication information of a data service and second indication information indicating whether the data service is an uplink data service or a downlink data service;

and the second access network equipment determines the resource indicated by the resource position indication information and determines whether the data service is an uplink data service or a downlink data service according to the second indication information.

In the information receiving method provided by the embodiment of the present invention, first, a second access network device receives first indication information sent by a first access network device, where the first indication information includes resource location indication information of a data service and second indication information indicating whether the data service is an uplink data service or a downlink data service. And then the second access network equipment determines the resource indicated by the resource position indication information, and determines whether the data service is an uplink data service or a downlink data service according to the second indication information, namely the second access network equipment can know the resource use condition of the first access network equipment. In the embodiment of the present invention, the second access network device can know the resource usage of the first access network device, so that the second access network device can determine the resource usage of the second access network device on the same resource according to the resource usage of the first access network device, so as to avoid the occurrence of the alien interference between the first access network device and the second access network device, and between the first access network device and the terminal device of the cell in which the second access network device is located. The first access network device and the second access network device are access network devices of adjacent cells. In the embodiment of the present invention, before transmitting the data service, the first access network device sends the first indication information to the second access network device of the neighboring cell of the cell in which the first access network device is located, so that the second access network device takes a corresponding interference coordination action. Therefore, the embodiment of the invention can solve the problem that the different-direction interference occurs between the access network equipment of the adjacent cells and between the terminal equipment of the adjacent cells after the flexible duplex technology is adopted.

Optionally, in a specific implementation manner of the embodiment of the present invention, the receiving, by the second access network device, the first indication information sent by the first access network device includes:

and the second access network equipment receives the first indication information which is sent by the first access network equipment through air interface broadcasting.

Optionally, in another specific implementation manner of the embodiment of the present invention, the receiving, by the second access network device, the first indication information sent by the first access network device includes:

and the second access network equipment receives the first indication information sent by the first access network equipment through a preset resource.

and the second access network equipment receives the first indication information sent by the first access network equipment through time-frequency resources of a physical downlink control channel.

and the second access network equipment receives the first indication information sent by the first access network equipment through the time-frequency resource of the physical uplink control channel.

and the second access network equipment receives the first indication information sent by the first access network equipment through the reserved time domain resources and/or the reserved frequency domain resources.

Optionally, in another specific implementation manner of the embodiment of the present invention, the method further includes: and the second access network equipment takes interference coordination action on the resource indicated by the resource position indication information.

Optionally, in another specific implementation manner of the embodiment of the present invention, the taking, by the second access network device, an interference coordination action on the resource indicated by the resource location indication information includes:

when the second access network device determines that the data service is a downlink data service, the second access network device does not perform uplink data transmission on the resource indicated by the resource position indication information, or the second access network device adjusts the transmission power or the beam transmission direction when performing uplink data transmission on the resource indicated by the resource position indication information; or

When the data service of the second access network device is an uplink data service, the second access network device does not perform downlink data transmission on the resource indicated by the resource position indication information, or the second access network device adjusts the transmission power or the beam transmission direction when performing downlink data transmission on the resource indicated by the resource position indication information.

the second access network device determines that the resource indicated by the resource position indication information is an uplink resource, and when the data service is a downlink data service, the second access network device does not perform uplink data transmission on the resource indicated by the resource position indication information, or the second access network device adjusts the transmission power or the beam transmission direction when performing uplink data transmission on the resource indicated by the resource position indication information; or

The second access network device determines that the resource indicated by the resource position indication information is a downlink resource, and when the data service is an uplink data service, the second access network device does not perform downlink data transmission on the resource indicated by the resource position indication information, or the second access network device adjusts the transmission power or the beam transmission direction when performing downlink data transmission on the resource indicated by the resource position indication information.

the second access network equipment receives an interference coordination release instruction which is sent by the first access network equipment and corresponds to the data service;

and the second access network equipment releases the interference coordination behavior according to the interference coordination release instruction.

and the second access network equipment sends an avoidance instruction corresponding to the data service to the first access network equipment.

In a third aspect, an embodiment of the present invention provides an information sending apparatus, where the information sending apparatus is arranged in a first access network device, and includes:

a processing module, configured to determine first indication information of a data service, where the first indication information includes resource location indication information of the data service, and second indication information indicating whether the data service is an uplink data service or a downlink data service;

and the sending module is used for sending the first indication information to the second access network equipment.

In the information sending apparatus provided in the embodiment of the present invention, the processing module determines first indication information of a data service, where the first indication information includes resource location indication information of the data service and second indication information indicating whether the data service is an uplink data service or a downlink data service. And then the sending module sends the first indication information to the second access network equipment. The second access network device determines the resource indicated by the resource location indication information, and determines whether the data service is an uplink data service or a downlink data service according to the second indication information, that is, the second access network device can know the resource usage of the first access network device. In the embodiment of the present invention, the second access network device can know the resource usage of the first access network device, so that the second access network device can determine the resource usage of the second access network device on the same resource according to the resource usage of the first access network device, so as to avoid the occurrence of the alien interference between the first access network device and the second access network device, and between the first access network device and the terminal device of the cell in which the second access network device is located. The first access network device and the second access network device are access network devices of adjacent cells. In the embodiment of the present invention, before transmitting the data service, the first access network device sends the first indication information to the second access network device of the neighboring cell of the cell in which the first access network device is located, so that the second access network device takes a corresponding interference coordination action. Therefore, the embodiment of the invention can solve the problem that the different-direction interference occurs between the access network equipment of the adjacent cells and between the terminal equipment of the adjacent cells after the flexible duplex technology is adopted.

Optionally, in a process of implementing the embodiment of the present invention specifically, the embodiment of the present invention further includes a receiving module, and in a specific implementation manner of the embodiment of the present invention, the processing module, the sending module, and/or the receiving module cooperate to implement any information sending method in each specific implementation manner of the first aspect of the present invention.

In a fourth aspect, an embodiment of the present invention provides an information receiving apparatus, where the information receiving apparatus is arranged in a second access network device, and includes:

a receiving module, configured to receive first indication information sent by a first access network device, where the first indication information includes resource location indication information of a data service and second indication information indicating whether the data service is an uplink data service or a downlink data service;

and the processing module is used for determining the resource indicated by the resource position indication information and determining whether the data service is an uplink data service or a downlink data service according to the second indication information.

In the information receiving apparatus provided in the embodiment of the present invention, first, a receiving module receives first indication information sent by a first access network device, where the first indication information includes resource location indication information of a data service and second indication information indicating whether the data service is an uplink data service or a downlink data service. And then the processing module determines the resource indicated by the resource position indication information, and determines whether the data service is an uplink data service or a downlink data service according to the second indication information, that is, the second access network device can know the resource use condition of the first access network device. In the embodiment of the present invention, the second access network device can know the resource usage of the first access network device, so that the second access network device can determine the resource usage of the second access network device on the same resource according to the resource usage of the first access network device, so as to avoid the occurrence of the alien interference between the first access network device and the second access network device, and between the first access network device and the terminal device of the cell in which the second access network device is located. The first access network device and the second access network device are access network devices of adjacent cells. In the embodiment of the present invention, before transmitting the data service, the first access network device sends the first indication information to the second access network device of the neighboring cell of the cell in which the first access network device is located, so that the second access network device takes a corresponding interference coordination action. Therefore, the embodiment of the invention can solve the problem that the different-direction interference occurs between the access network equipment of the adjacent cells and between the terminal equipment of the adjacent cells after the flexible duplex technology is adopted.

Optionally, in a process of implementing the embodiment of the present invention specifically, the embodiment of the present invention further includes a sending module, and in a specific implementation of the embodiment of the present invention, the processing module, the receiving module, and/or the sending module cooperate to implement any information receiving method in each specific implementation of the second aspect of the present invention.

In a fifth aspect, an embodiment of the present invention provides a computer storage medium, where the computer storage medium may store a program, and the program may implement any one of the information sending methods according to the embodiments of the first aspect of the present invention when executed.

In a sixth aspect, an embodiment of the present invention provides a computer storage medium, where the computer storage medium may store a program, and the program may implement any one of the information receiving methods according to the second aspect of the present invention when executed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present invention;

fig. 2 is a schematic view of a scenario of alien interference according to an embodiment of the present invention;

fig. 3 is a flowchart of signaling interaction between a first access network device and a second access network device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an information sending apparatus according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an information receiving apparatus according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an access network device according to an embodiment of the present invention.

Detailed Description

An application scenario of the embodiment of the present invention is described below with reference to the drawings. Referring to fig. 1, a schematic view of an application scenario provided in the embodiment of the present invention is shown. The application scenario includes an access network device 11 and an access network device 12, a cell (cell) a under the coverage of the access network device 11 and a cell B under the coverage of the access network device 12 are adjacent cells, and both the cell a and the cell B may include one or more terminal devices (not shown in fig. 1). The application scenario of the embodiment of the invention can correspond to a wireless communication system which can be a 3G, 4G, 4.5G, 5G and other communication systems.

In the application scenario shown in fig. 1, the terminal device may be a device providing voice and/or data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. Terminal devices, which may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers with mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks via a Radio Access Network (RAN), which exchanges language and/or data with the RAN. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs) are used. The terminal device 31 may also be referred to as a system, a Subscriber Unit (SU), a Subscriber Station (SS), a Mobile Station (MS), a Remote Station (RS), an Access Point (AP), a Remote Terminal (RT), an Access Terminal (AT), a User Terminal (UT), a User Agent (UA), a User Equipment (UE), or a User Equipment (UE). The access network device (e.g., access network device 11 or access network device 12) may be a base station, an enhanced base station, or a relay with scheduling functionality, or a device with base station functionality, etc. The base station may be an evolved Node B (eNB) in an LTE system, or may also be a base station in other systems, and the embodiment of the present invention is not limited.

Referring to the description of the background art, in the related art, after the flexible duplex technology is adopted, the alien interference occurs between access network devices of adjacent cells and between terminal devices of adjacent cells. For example, referring to fig. 2, in the application scenario shown in fig. 1, in the same Transmission Time Interval (TTI), uplink Transmission is performed between access network device 11 and terminal device a1 in cell a, and downlink Transmission is performed between access network device 12 and terminal device B1 in cell B. The uplink transmission and the downlink transmission use the same resources. Since the transmission power of the access network device 12 is much larger than the transmission power of the terminal device a1, in the scenario shown in fig. 2, the access network device 11 receives the downlink signal sent by the access network device 12 while receiving the uplink information sent by the terminal device a1, and generates severe anisotropic interference.

Therefore, in the embodiment of the present invention, when an access network device is going to perform data service transmission, the access network device determines first indication information of a data service, where the first indication information includes resource location indication information of the data service, and second indication information indicating whether the data service is an uplink data service (where a terminal device sends data to the access network device) or a downlink data service (where the access network device sends data to the terminal device). The resource location indication information is used to indicate resources used for transmitting the data service, and specifically is used to indicate a frequency domain location and a time domain location of the resources used for transmitting the data service, where the frequency domain location may be one or more resource blocks, or may be one or more carriers, and the time domain location may be one or more slots, or may be one or more subframes. And then the access network equipment sends the first indication information to the access network equipment of the adjacent cell of the cell where the access network equipment is located in a broadcast mode through an air interface. After receiving the first indication information, the access network equipment of the adjacent cell determines the resource use condition of the access network equipment according to the resource position indication information and the second indication information in the first indication information. The data service in each embodiment of the present invention may be various data services, for example, the data service in each embodiment of the present invention may be enhanced mobile broadband (eMBB) service, Ultra-high reliability and Ultra-low latency communication (URLLC) service, large capacity Machine communication (mtc) service, and the like. In the embodiment of the invention, the access network devices of the adjacent cells can acquire the resource use conditions of each other, so the access network devices of the adjacent cells can determine the resource use modes on the same resource according to the resource use conditions of each other, and the embodiment of the invention can solve the problem of the occurrence of the anisotropic interference between the access network devices of the adjacent cells and between the terminal devices of the adjacent cells after the flexible duplex technology is adopted.

For convenience of subsequent description, in the embodiment of the present invention, access network devices of adjacent cells are distinguished. In the embodiments of the present invention, an access network device that is to perform data service transmission is referred to as a first access network device, and an access network device that receives the first indication information is referred to as a second access network device. The first access network device and the second access network device may be any access network device in an adjacent cell. For example, in the application scenario shown in fig. 1, when the first access network device is the access network device 11, the second access network device may be the access network device 12. Similarly, when the first access network device is access network device 12, the second access network device may be access network device 11. The following describes an interaction procedure between a first access network device and a second access network device by using the embodiment shown in fig. 3.

Referring to fig. 3, a flowchart of signaling interaction between a first access network device and a second access network device according to an embodiment of the present invention is provided, where the embodiment may include the following steps:

in step S310, the first access network device determines first indication information of the data service.

In this step, the first access network device obtains the indication information of the data service when the data service transmission is to be performed. Specifically, the first access network device may determine that the first access network device is to perform data transmission when receiving a data upload request sent by the terminal device, or when receiving a data download request sent by the terminal device, or when the first access network device actively transmits data to the terminal device within the coverage of the first access network device. There may be various ways for the first access network device to determine the first indication information of the data service. For example, the first access network device may allocate resources for transmission of a data service by scheduling, determine whether the scheduled data service is an uplink data service or a downlink data service, and further determine at least one of the beam direction, the modulation scheme, the service class, the antenna port, and the like of the data service, and then obtain corresponding indication information according to a scheduling result, that is, the first access network device may determine the first indication information according to the scheduling. For another example, the first access network device may receive a transmission parameter sent by the terminal device, where the transmission parameter may include resource location indication information, and the transmission parameter may further include at least one of service level indication information, beam direction indication information, modulation mode indication information, and antenna port indication information of the data service. When receiving the transmission parameter sent by the terminal device, the first access network device can know that the data service is an uplink data service, and accordingly obtain the second indication information. That is, the first access network device may determine the first indication information according to the transmission parameter. The terminal device here is a terminal device accessing the first access network device. For example, the terminal device accessing the first access network device may directly obtain the first indication information, and send the first indication information to the first access network device.

The first indication information determined by The first access network device may be Over The Air (OTA) signaling, backhaul (backhaul) information, and The like. The first indication information determined by the first access network device includes resource location indication information of the data service and second indication information indicating whether the data service is an uplink data service or a downlink data service, and the first indication information determined by the first access network device may further include at least one of service level indication information of the data service, beam direction indication information, modulation mode indication information and antenna port indication information.

In the specific implementation process of the embodiment of the present invention, the resource location indication information is used to indicate resources used in data service transmission. For example, the resource location indication information may include time domain information of an Orthogonal Frequency Division Multiplexing (OFDM) symbol and frequency domain information of a Physical Resource Block (PRB), or may include time domain information of a subframe and frequency domain information of a PRB; the resource location indication information may also include location information of time-frequency resources occupied by a specific physical channel, and the like. The second indication information may distinguish the data service as an uplink data service or a downlink data service in an agreed manner. For example, when the second indication information is Up, the data service is indicated as an uplink data service, and when the second indication information is Down, the data service is indicated as a downlink data service. For another example, when the second indication information is 0, the data service is indicated as an uplink data service, and when the second indication information is 1, the data service is indicated as a downlink data service.

In the process of the embodiment of the present invention, the service class indication information is used to indicate the service class of the data service. The service level indication information may be a category of the data service, a service level of the data service, and the like. When the service level indication information is a data service type, the first access network device and the second access network device should have a corresponding relationship between the data service type and the service level. The beam direction indication information is used for indicating the radiation or receiving direction when the first access network device transmits the data service. The beam direction indication information may be a position coordinate of the terminal device, an antenna beam direction of communication between the terminal device and the first access network device, a direction of connection between the terminal device and the first access network device, and the like. The modulation mode indication information is used to indicate a modulation mode when the first access network device transmits the data service, and the modulation mode indication information may be predetermined, and may specifically be various expression forms such as numbers, special characters, and the like. The antenna port indication information is used for indicating the number of antenna ports of the first access network device or the terminal device for transmitting data. Specifically, the antenna port indication information may be directly represented by a number, but may be represented in other manners. For example, it is possible to define the correspondence between the number of antenna ports and a special character (such as an english letter, a greek letter, or the like), and then represent the antenna port indication information using the special character.

In step S320, the first access network device sends the first indication information to the second access network device.

The first access network device and the second access network device are access network devices of adjacent cells. The first access network equipment can send the first indication information to the second access network equipment in a broadcast mode through an air interface.

In this step, in order to enable the first access network device to send the first indication information to the second access network device as soon as possible after determining the first indication information, a preset resource may be configured for the first indication information, that is, the first access network device sends the first indication information to the second access network device through the preset resource. The preset resource may have various expression forms, for example, the preset resource may be a time-frequency resource of a Physical Downlink Control Channel (PDCCH); or may also be a time-frequency resource of a Physical Uplink Control Channel (PUCCH); or may also be a reserved time domain resource of the first access network device, and/or a frequency domain resource, and the like, where the reserved time domain resource is a reserved symbol resource (e.g. 1 OFDM symbol in each TTI), the reserved frequency domain resource is a reserved frequency resource (e.g. one PRB in each TTI), and the reserved time domain resource and frequency domain resource are resources that determine a frequency range and a time interval (e.g. fixed resource particles in each TTI).

In addition, the preset resource may also be used to send other data (such as control information, service data, and the like), and when the preset resource needs to send other data and the first indication information at the same time, the first access network device sends the first indication information to the second access network device. Therefore, the utilization rate of the preset resources can be improved, and the first indication information can be sent to the second access network equipment in time.

For example, when the preset resource is a time-frequency resource of the PDCCH, the time-frequency resource of the PDCCH may also be used to send downlink control information, and when the time-frequency resource of the PDCCH needs to send the downlink control information and the first indication information at the same time, the first access network device sends the first indication information to the second access network device. For another example, when the preset resource is a time-frequency resource of a PUCCH, the time-frequency resource of the PUCCH may also be used to send uplink control information, and when the time-frequency resource of the PUCCH needs to send the uplink control information and the first indication information at the same time, the first access network device sends the first indication information to the second access network device. For example, when the preset resource is a time domain resource and/or a frequency domain resource reserved by the first access network device, the reserved time domain resource and/or the frequency domain resource may also be used to send other data, and when the reserved time domain resource and/or the frequency domain resource simultaneously need to send other data and the first indication information, the first access network device sends the first indication information to the second access network device.

In addition, the reserved time domain resource can adopt a mode of small time slots (mini-slots, MS for short), one mini-slot includes L symbols, L is any value from 1 to (X-1), where X is the total number of symbols of one slot.

In addition, the first access network device may send the first indication information to the second access network device by using a first sending power that is less than or equal to a preset threshold, where the preset threshold may be less than or equal to the sending power of the terminal device. In this way, when the resource used when the first access network device sends the first indication information to the second access network device is the uplink resource, the sending power when the first access network device sends the first indication information to the second access network device is below the preset threshold, so that the occurrence of the anisotropic interference between the first access network device and the second access network device in the uplink resource can be avoided.

In order to facilitate the second access network device to detect the indication information, the first access network device may employ a predefined transmission format when sending the first indication information to the second access network device, where the predefined transmission format includes at least one of a predefined modulation and coding scheme and a predefined beam direction. For example, the predefined modulation scheme is Quadrature Phase Shift Keying (QPSK), 1/3 code rate, etc. In step S330, the second access network device receives the first indication information sent by the first access network device.

And the mode of receiving the first indication information by the second access network equipment corresponds to the mode of sending the first indication information by the first access network equipment. For example, when the first access network device sends the first indication information to the second access network device through the air interface in a broadcast manner, the second access network device receives the first indication information sent by the first access network device through the air interface in a broadcast manner. When the first access network equipment sends the first indication information to the second access network equipment through the preset resource, the second access network equipment receives the first indication information sent by the first access network equipment on the preset resource. When the first access network equipment sends the first indication information to the second access network equipment in the mode of MS time domain resources, the second access network equipment receives the first indication information sent by the first access network equipment in the mode of MS time domain resources.

In step S340, the second access network device determines the resource indicated by the resource location indication information, and determines whether the data service is an uplink data service or a downlink data service according to the second indication information.

In this step, after the second access network device receives the first indication information sent by the first access network device, the second access network device may determine the resource indicated by the resource location indication information according to the resource location indication information in the first indication information, and may determine whether the data service is an uplink data service or a downlink data service according to the second indication information in the first indication information.

In addition, as described above, the first indication information may further include: at least one of service class indication information, beam direction indication information, modulation mode indication information, and antenna port indication information of the data service. The second access network equipment can determine the service grade of the data service according to the service grade indication information, can determine the beam direction of the data service according to the beam direction indication information, can determine the adjustment mode of the data service according to the modulation mode indication information, and can determine the antenna port of the data service according to the antenna port indication information.

In step S350, the second access network device takes an interference coordination action on the resource indicated by the resource location indication information.

In this step, the second access network device determines an interference coordination action according to the first indication information, and takes the interference coordination action on the resource indicated by the resource location indication information. And the interference coordination behavior is used for avoiding the occurrence of the resource heterodromous interference between the first access network equipment and the second access network equipment and between the first access network equipment and the terminal equipment of the cell in which the second access network equipment is located in the resource position indication information.

In the specific implementation process of the embodiment of the present invention, the second access network device may determine, according to the resource location indication information, a resource corresponding to the interference coordination behavior (i.e., a resource indicated by the resource location indication information), and may determine, according to the second indication information, whether the interference coordination behavior is for the uplink data service or the downlink data service. There are various implementation manners of step S350:

for example, step S350 may include: when the second access network device determines that the resource indicated by the second indication information is a downlink data service, the second access network device adjusts the transmission power or the beam transmission direction when performing uplink data transmission on the resource indicated by the resource position indication information, so that the receivable power of the first access network device or the terminal device of the cell where the first access network device is located on the resource indicated by the resource position indication information is reduced, or the second access network device does not perform uplink data transmission on the resource indicated by the resource position indication information.

For another example, step S350 may include: when the second access network equipment determines that the resource indicated by the second indication information is the uplink data service, the second access network equipment adjusts the transmitting power or the beam transmitting direction when performing downlink data transmission on the resource indicated by the resource position indication information, so that the receivable power of the first access network equipment or the terminal equipment of the cell where the first access network equipment is located on the resource indicated by the resource position indication information is reduced, or the second access network equipment does not perform downlink data transmission on the resource indicated by the resource position indication information.

Also for example, step S350 may include: and when the second access network equipment determines that the resource indicated by the resource position indication information is an uplink resource and determines that the resource indicated by the second indication information is a downlink data service, the second access network equipment adjusts the transmitting power or the beam transmitting direction when the uplink data transmission is performed on the resource indicated by the resource position indication information, so that the receivable power of the first access network equipment or the terminal equipment of the cell where the first access network equipment is located on the resource indicated by the resource position indication information is reduced, or the second access network equipment does not perform the uplink data transmission on the resource indicated by the resource position indication information.

For another example, step S350 may also include: and when the second access network equipment determines that the resource indicated by the resource position indication information is a downlink resource and determines that the resource indicated by the second indication information is an uplink data service, the second access network equipment adjusts the transmitting power or the beam transmitting direction when the downlink data transmission is performed on the resource indicated by the resource position indication information, so that the receivable power of the first access network equipment or the terminal equipment of the cell where the first access network equipment is located on the resource indicated by the resource position indication information is reduced, or the second access network equipment does not perform the downlink data transmission on the resource indicated by the resource position indication information.

If the second access network device is performing data transmission by using the resource indicated by the resource location indication information when receiving the first indication information, the "not performing" in not performing uplink data transmission or not performing downlink data transmission may be interpreted as an interruption. If the second access network device does not utilize the resource indicated by the resource location indication information for data transmission when receiving the indication information, "do not do" in not performing uplink data transmission or not performing downlink data transmission herein may be interpreted as not allowing.

Through the implementation mode of the embodiment of the invention, the power which can be received by the first access network equipment or the terminal equipment of the cell in which the first access network equipment is positioned on the resource indicated by the resource position indication information can be reduced, or the power which is sent by the second access network equipment on the resource indicated by the resource position indication information can not be received, so that the occurrence of the heterodromous interference between the first access network equipment and the second access network equipment and between the first access network equipment and the terminal equipment of the cell in which the second access network equipment is positioned on the resource indicated by the resource position indication information can be avoided.

It should be noted that, the second access network device may determine the interference coordination behavior only according to the resource location indication information and the second indication information in the first indication information. For example, when the first indication information sent by the first access network device only includes the resource location indication information and the second indication information, the first access network device can determine whether the data service is an uplink data service or a downlink data service according to the second indication information, the second access network device does not utilize the resource indicated by the resource position indication information to perform the data transmission with the first access network device in an opposite direction (namely, the first access network device and the second access network device perform the uplink data service and perform the downlink data service on the resource indicated by the resource position indication information), or when the second access network equipment utilizes the resource indicated by the resource position indication information to perform the data transmission with the first access network equipment in an opposite direction, and the second access network equipment adjusts the transmitting power or the beam transmitting direction when the data transmission is carried out on the resources indicated by the resource position indication information.

When the first indication information sent by the first access network device further includes at least one of service level indication information of a data service, beam direction indication information, modulation mode indication information and antenna port indication information, the second access network device may determine a resource corresponding to the interference coordination behavior according to the resource position indication information, and may determine whether the interference coordination behavior is for an uplink data service or a downlink data service according to the second indication information. At this time, the interference coordination behavior may be determined by the second access network device according to the service level indication information, the beam direction indication information, the modulation mode indication information, and/or the antenna port indication information.

When the first indication information sent by the first access network device further includes one of beam direction indication information, modulation mode indication information, service level indication information, and antenna port indication information of the data service, and when the second access network device performs the data transmission with the first access network device using the resource indicated by the resource position indication information, the second access network device may adjust the beam transmitting direction when transmitting the data according to the beam direction indication information. The second access network device may also reproduce the interference according to the modulation scheme indicated by the modulation scheme indication information, and further delete the interference. The second access network device may also reproduce interference according to the antenna port indicated by the antenna port indication information, thereby deleting the interference. The second access network equipment can also determine the corresponding interference coordination behavior according to the service level indicated by the service level indication information. For example, when the service level indicated by the service level indication information is the highest service level, the second access network device does not utilize the resource indicated by the resource location indication information to perform the data transmission with the first access network device in an asynchronous manner. And when the service level indicated by the service level indication information is other service levels, the second access network equipment adjusts the transmitting power when the resources indicated by the resource position indication information and the first access network equipment perform the transmission of the incongruous data according to the service level.

When the first indication information sent by the first access network device further includes two, three or four items of beam direction indication information, modulation mode indication information, antenna port indication information and service level indication information of the data service, the second access network device may determine the interference coordination behavior according to the magnitude of the influence of each item on the heterodromous interference. For example, when the first indication information sent by the first access network device further includes beam direction indication information and service level indication information, the beam transmitting direction in the case that the resource indicated by the resource position indication information is used for data transmission in the reverse direction of the transmission direction indicated by the second indication information may be adjusted according to the beam direction indication information, and the transmitting power in the case that the resource indicated by the resource position indication information is used for data transmission in the different direction from the first access network device may be adjusted according to the service level indication information.

The method provided by the embodiment of the invention comprises the steps that first access network equipment determines first indication information of a data service, wherein the first indication information comprises resource position indication information of the data service and second indication information indicating whether the data service is an uplink data service or a downlink data service. And then the first access network equipment sends the first indication information to the second access network equipment. The second access network device determines the resource indicated by the resource location indication information, and determines whether the data service is an uplink data service or a downlink data service according to the second indication information, that is, the second access network device can know the resource usage of the first access network device. In the embodiment of the present invention, the second access network device can know the resource usage of the first access network device, so that the second access network device can determine the resource usage of the second access network device on the same resource according to the resource usage of the first access network device, so as to avoid the occurrence of the alien interference between the first access network device and the second access network device, and between the first access network device and the terminal device of the cell in which the second access network device is located. The first access network device and the second access network device are access network devices of adjacent cells. In the embodiment of the present invention, before transmitting the data service, the first access network device sends the first indication information to the second access network device of the neighboring cell of the cell in which the first access network device is located, so that the second access network device takes a corresponding interference coordination action. Therefore, the embodiment of the invention can solve the problem that the different-direction interference occurs between the access network equipment of the adjacent cells and between the terminal equipment of the adjacent cells after the flexible duplex technology is adopted.

In addition, in the implementation process of the embodiment shown in fig. 3, before step S320, the method may further include: the first access network equipment determines that the data service is an uplink data service, and the resource indicated by the resource position indication information is a downlink resource; or the first access network equipment determines that the data service is a downlink data service, and the resource indicated by the resource position indication information is an uplink resource.

In this specific embodiment, the first access network device may determine whether the data service is an uplink data service or a downlink data service according to the second indication information. Herein, that the resource indicated by the resource location indication information is a downlink resource means that the resource indicated by the resource location indication information belongs to a downlink resource, that is, flexible dual-man-hour is not performed, and the resource indicated by the resource location indication information is used for transmission of a downlink service. The resource indicated by the resource location indication information is an uplink resource, which means that the resource indicated by the resource location indication information belongs to the uplink resource, that is, the resource indicated by the resource location indication information is used for transmitting the uplink service without performing flexible dual-time. For example, for the FDD mode, if the resource indicated by the resource location indication information is a part of the uplink resource, the resource indicated by the resource location indication information is the uplink resource, and if the resource indicated by the resource location indication information is a part of the downlink resource, the resource indicated by the resource location indication information is the downlink resource. For the TDD mode, if the current time is the uplink transmission time originally, the resource indicated by the resource location indication information is an uplink resource, and if the current time is the downlink transmission time originally, the resource indicated by the resource location indication information is a downlink resource.

Besides the signaling interaction process shown in fig. 3, the method for providing access point signaling between a first access network device and a second access network device may further include:

when the first access network equipment determines that the data service transmission is finished, the first access network equipment sends an interference coordination release instruction corresponding to the data service to the second access network equipment;

the second access network equipment receives an interference coordination release instruction of the corresponding data service sent by the first access network equipment;

and the second access network equipment removes the interference coordination action according to the interference coordination removal instruction.

The interference coordination release instruction may include resource location indication information, or identification information of first indication information sent by the first access network device to the second access network device. After receiving the interference coordination release instruction, the second access network device may determine a resource corresponding to the interference coordination behavior according to the interference coordination release instruction, and then release the interference coordination behavior.

In this embodiment, when the first access network device completes transmission of the data service, the first access network device sends an interference coordination release instruction corresponding to the data service to the second access network device. The second access network device can remove the interference coordination behavior according to the interference coordination removal instruction, and then the second access network device can normally use resources corresponding to the interference coordination behavior, so that the network transmission rate is improved.

In the specific implementation process of the embodiment shown in fig. 3, if the second access network device receives the first indication information sent by the first access network device, the second access network device is using the resource indicated by the resource location indication information to perform data transmission, and the transmission direction is opposite to the transmission direction of the data service of the first access network device. At this time, the second access network device may send a corresponding avoidance instruction to the first access network device. In addition, when the first indication information sent by the first access network device includes the service level indication information, the second access network device may compare the service level of the data service of the second access network device with the service level of the data service of the first access network device. When the data service of the second access network device is higher than the data service level of the first access network device, the second access network device can send a corresponding avoidance instruction to the first access network device. And when the data service grade of the second access network equipment is lower than that of the first access network equipment, the second access network equipment can take interference coordination action according to the first indication information. That is, the interaction process between the first access network device and the second access network device may further include:

the second access network equipment sends an avoidance instruction corresponding to the data service to the first access network equipment;

the method comprises the steps that first access network equipment receives an avoidance instruction sent by second access network equipment;

It should be noted that, in the embodiment of the present invention, the operation performed after the first access network device receives the back-off instruction is not limited to stopping transmitting the data service or allocating a new resource to the data service. As long as it can be ensured that the resource indicated by the resource location indication information between the first access network device and the second access network device does not have the anisotropic interference, the first access network device may also take other measures. For example, the first access network device may reduce the transmit power on the resources indicated by the resource location indication information, and so on. The premise that the avoidance instruction is sent to the second access network device in the embodiment of the present invention is not limited to the case that the second access network device is using the resource indicated by the resource location indication information, and the transmission direction is opposite to the transmission direction of the data service of the first access network device. For example, when the second access network device may use resources indicated by the resource location indication information and the second access network device needs to transmit the emergency data service, the second access network device may also send a corresponding back-off instruction to the first access network device.

In this embodiment, if the second access network device is using the resource indicated by the resource location indication information, and the transmission direction is opposite to the transmission direction of the data traffic of the first access network device. Or the second access network device may use the resource indicated by the resource position indication information, and the second access network device needs to transmit the emergency data service, and the second access network device may send a corresponding avoidance instruction to the first access network device. When receiving the avoidance instruction, the first access network device may stop transmitting the data service, or allocate a new resource to the data service, so as to avoid occurrence of the resource-directed interference between the first access network device and the second access network device, and between the first access network device and the terminal device of the cell in which the second access network device is located, where the resource-directed interference is indicated by the resource-position indication information.

The embodiment shown in fig. 3 illustrates a signaling interaction procedure between a first access network device and a second access network device. The interaction between the first access network device and the second access network device is systematically explained in the following by several specific embodiments.

The first embodiment is as follows:

in FDD duplex mode, FDD is divided into two frequency bands (alternatively referred to as carriers), one for downlink transmission and one for uplink transmission. After the flexible duplex is adopted, the frequency band for uplink transmission may be used for downlink transmission, and the frequency band for downlink transmission may also be used for uplink transmission, which may cause the occurrence of the anisotropic interference between the uplink and the downlink in the adjacent cells. In order to avoid the alien interference, when the first access network device is about to perform a data service, the first access network device needs to send first indication information to the second access network device, so that the second access network device takes an interference coordination action. In the following, an example in practical application is given in which the access network device 11 in the scenario shown in fig. 1 is a first access network device, and the access network device 12 is a second access network device.

Take the case that the access network device 11 schedules downlink transmission in N subframes of the uplink frequency band as an example. The access network device 11 sends Downlink control information (DCI for short) to the terminal device in an N-k subframe (k takes a value of 1,2,3, or 4) of the Downlink frequency band to notify the terminal device that the access network device 11 schedules the N subframe of the uplink carrier for Downlink transmission. Meanwhile, the access network device 11 broadcasts OTA signaling (corresponding to the first indication information) on the PUCCH reserved for the N-k subframe of the uplink frequency band. The OTA signaling has a fixed transmission format, for example, the coded modulation mode is QPSK, 1/3 code rate, etc., and the fixed transmission format facilitates the access network device 12 to detect the OTA signaling. The OTA signaling includes frequency band information (corresponding to resource location indication information) of N subframes of an uplink frequency band, uplink indication information 0 (corresponding to second indication information), transmission beam information (corresponding to beam direction indication information), and a service level (corresponding to service level indication information). Meanwhile, in order to reduce the influence on uplink PUCCH transmission of other cells, the access network device 11 reduces the transmission power, such as the maximum transmission power is the same as that of the terminal device, when transmitting OTA signaling. Meanwhile, the access network device 11 sends a control instruction to the served uplink terminal device in the N-m (m is an integer, and m > k) subframe of the downlink frequency band, so as to notify the uplink terminal device that the PUCCH feedback of the N-k subframe of the uplink frequency band is delayed.

After the access network device 12 detects the OTA signaling in the PUCCH reserved in the N-k subframe of the uplink frequency band, the access network device 12 takes an interference coordination action according to the content notified in the OTA signaling. If access network device 12 does not utilize N subframes of the uplink frequency band for uplink transmission; or the access network device 12 adjusts the transmission power when performing uplink transmission by using N subframes of the uplink frequency band, so as to avoid the occurrence of the anisotropic interference between the access network device 11 and the access network device 12; or the access network device 12 performs beam coordination when performing uplink transmission by using N subframes of the uplink frequency band, that is, adjusts the power transmission direction, so as to avoid the occurrence of the anisotropic interference between the access network device 11 and the access network device 12.

The second embodiment is as follows:

in the TDD duplex mode, there is only one carrier, and some subframes are used for downlink transmission and some subframes are used for uplink transmission. After the flexible duplex is adopted, subframes for transmitting uplink and subframes for transmitting downlink of adjacent cells may not be synchronous, which may cause the occurrence of the out-of-phase interference between uplink and downlink of adjacent cells. In order to avoid the alien interference, when the first access network device is about to perform a data service, the first access network device needs to send first indication information to the second access network device, so that the second access network device takes an interference coordination action. In the following, an example in practical application is given in which the access network device 11 in the scenario shown in fig. 1 is a first access network device, and the access network device 12 is a second access network device.

The application scenario in the NR system is described. For TDD duplex mode, when fully dynamic transmission direction scheduling is adopted, the dynamic change frequency of the transmission direction of the subframe is relatively high in consideration of the requirements of NR system for high spectral efficiency and large bandwidth. For better transmission of OTA signaling (corresponding to the first indication information), a frequency band may be reserved in each subframe for transmission of OTA signaling. Taking the case that the access network device 11 schedules uplink transmission in the subframe N as an example, the access network device 11 sends DCI to the terminal device in an N-k subframe (k takes a value of 1,2,3, or 4) of the downlink frequency band, so as to notify the terminal device that the access network device 11 schedules the N subframe of the uplink carrier for downlink transmission. Meanwhile, the access network device 11 broadcasts the OTA signaling on the reserved frequency band corresponding to the N-k subframe. In order to reduce the transmission delay of the OTA signaling, the OTA signaling adopts a fixed transmission format, for example, the coding modulation mode is QPSK, 1/3 code rate, etc., and the fixed transmission format is also convenient for the access network device 12 to detect the OTA signaling. In addition, when the OTA signaling is transmitted, a mini-slot transmission mode is adopted, for example, the OTA signaling is transmitted by adopting the transmission time slot of 1-2 OFDM symbols, so that the transmission delay of the OTA signaling is further reduced. The OTA signaling content includes time information (corresponding to resource location indication information) corresponding to N subframes, uplink indication information Up (corresponding to second indication information), transmission beam information (corresponding to beam direction indication information), and service level (corresponding to service level indication information) included in the OTA signaling.

After the access network device 12 detects the OTA signaling in the N-k subframe reserved frequency band, the access network device 12 takes an interference coordination action according to the content notified in the OTA signaling. If access network device 12 does not utilize N subframes for uplink transmission; or the access network device 12 adjusts the transmission power when using N subframes for uplink transmission, so as to avoid the occurrence of the alien interference between the access network device 11 and the access network device 12; or the access network device 12 performs beam coordination when performing uplink transmission by using N subframes, that is, adjusts the power transmission direction, so as to avoid the occurrence of the anisotropic interference between the access network device 11 and the access network device 12.

The resources may also be used for backhaul (backhaul) transmission between the base station and the small station, and in order to guarantee transmission of the OTA signaling, the backhaul (backhaul) transmission between the base station and the small station may be interrupted when the OTA signaling needs to be transmitted.

The third concrete embodiment:

the present embodiment is described with reference to an uplink URLLC service of a terminal device. The terminal device is located in the coverage area of the access network device 11, after the uplink URLLC service of the terminal device arrives, the terminal device sends a signaling including the service level and the time-frequency resource location used by the uplink URLLC service to the access network device 11, indicating that the emergency service of the access network device 11 arrives, and then the terminal device performs uplink URLLC service transmission.

After receiving the signaling sent by the terminal device, the access network device 11 determines that there is an uplink emergency service to be sent. In order to ensure the transmission reliability of the uplink emergency service, the access network device 11 needs to broadcast and send OTA signaling to the access network device 12. The OTA signaling has a fixed transmission format, for example, the coding modulation mode is QPSK, 1/3 code rate, etc., and the OTA is transmitted by adopting a mini-slot transmission mode, and is specifically transmitted in 1 OFDM symbol. The OTA signaling comprises: a time-frequency resource position (corresponding to resource position indication information) used by the uplink URLLC service, uplink indication information 0 (corresponding to second indication information), a service level (corresponding to service level indication information), a modulation mode used, and the like.

After detecting the OTA signaling, the access network device 12 determines that the service level of the uplink URLLC is the highest service level according to the content in the OTA signaling. Access network device 12 interrupts the data transmission of the time-frequency resources used by the uplink URLLC service.

Compared with the above method embodiment, the embodiment of the invention also provides a corresponding device embodiment.

Fig. 4 is a schematic structural diagram of an information sending apparatus according to an embodiment of the present invention. The information transmitting means is arranged in the first access network device and may comprise a processing module 410 and a transmitting module 420.

The processing module 410 is configured to determine first indication information of a data service, where the first indication information includes resource location indication information of the data service, and second indication information indicating whether the data service is an uplink data service or a downlink data service;

the sending module 420 is configured to send the first indication information to a second access network device.

Optionally, in a specific implementation manner of the embodiment of the present invention, the information sending apparatus shown in fig. 4 may further include: and a receiving module.

The receiving module is configured to receive a transmission parameter sent by a terminal device, where the transmission parameter includes the resource location indication information, and the second indication information indicates that the data service is an uplink data service.

Optionally, in another specific implementation manner of the embodiment of the present invention, the processing module 410 is specifically configured to determine the first indication information according to a schedule.

Optionally, in another specific implementation manner of the embodiment of the present invention, the sending module 420 is specifically configured to send the first indication information to the second access network device over an air interface in a broadcast manner.

Optionally, in another specific implementation manner of the embodiment of the present invention, the sending module 420 is specifically configured to send the first indication information to the second access network device through a preset resource.

Alternatively, in another specific implementation of an embodiment of the present invention,

the sending module 420 is specifically configured to send the first indication information to the second access network device through a time-frequency resource of a physical downlink control channel; or the like, or, alternatively,

the sending module 420 is specifically configured to send the first indication information to the second access network device through a time-frequency resource of a physical uplink control channel; or the like, or, alternatively,

the sending module 420 is specifically configured to send the first indication information to the second access network device through the reserved time domain resources and/or frequency domain resources.

Optionally, in another specific implementation manner of the embodiment of the present invention, the sending module 420 is specifically configured to send the first indication information to the second access network device through a first sending power, where the first sending power is less than or equal to a preset threshold.

Optionally, in another specific implementation manner of the embodiment of the present invention, the sending module 420 is specifically configured to send the first indication information to the second access network device by using a predefined transmission format, where the predefined transmission format includes at least one of a predefined modulation and coding scheme and a predefined beam direction.

Optionally, in another specific implementation manner of the embodiment of the present invention, the first indication information further includes:

at least one of service class indication information, beam direction indication information, modulation mode indication information and antenna port indication information of the data service.

Optionally, in another specific implementation manner of the embodiment of the present invention, the processing module 410 is further configured to determine that the data service is an uplink data service before sending the first indication information to the second access network device, and a resource indicated by the resource location indication information is a downlink resource; or, the processing module is further configured to determine that the data service is a downlink data service and the resource indicated by the resource location indication information is an uplink resource before sending the first indication information to the second access network device.

Optionally, in another specific implementation manner of the embodiment of the present invention, the sending module 420 is further configured to send an interference coordination release instruction corresponding to the data service to the second access network device when the data service transmission is completed.

Optionally, in another specific implementation manner of the embodiment of the present invention, the receiving module is further configured to receive a back-off instruction corresponding to the data service, which is sent by the second access network device;

the processing module 410 is further configured to stop transmitting the data service according to the avoidance instruction, or allocate a new resource to the data service.

Fig. 5 is a schematic structural diagram of an information receiving apparatus according to an embodiment of the present invention. The information receiving means is arranged in the second access network device, and the information receiving means may include a receiving module 510 and a processing module 520.

The receiving module 510 is configured to receive first indication information sent by a first access network device, where the first indication information includes resource location indication information of a data service and second indication information indicating whether the data service is an uplink data service or a downlink data service;

the processing module 520 is configured to determine the resource indicated by the resource location indication information, and determine whether the data service is an uplink data service or a downlink data service according to the second indication information.

Optionally, in a specific implementation manner of the embodiment of the present invention, the receiving module 510 is specifically configured to receive the first indication information that is sent by the first access network device by broadcast over an air interface.

Optionally, in a specific implementation manner of the embodiment of the present invention, the receiving module 510 is specifically configured to receive the first indication information sent by the first access network device through a preset resource.

the receiving module 510 is specifically configured to receive the first indication information sent by the first access network device through a time-frequency resource of a physical downlink control channel; or the like, or, alternatively,

the receiving module 510 is specifically configured to receive the first indication information sent by the first access network device through a time-frequency resource of a physical uplink control channel; or the like, or, alternatively,

the receiving module 510 is specifically configured to receive the first indication information sent by the first access network device through the reserved time domain resource and/or frequency domain resource.

Optionally, in another specific implementation manner of the embodiment of the present invention, the processing module 520 is further configured to take an interference coordination action on a resource indicated by the resource location indication information.

the processing module 520 is further configured to determine that the data service is a downlink data service, where the processing module 520 does not perform uplink data transmission on the resource indicated by the resource location indication information, or the processing module 520 adjusts the transmission power or the beam transmission direction when performing uplink data transmission on the resource indicated by the resource location indication information; alternatively, the first and second electrodes may be,

the processing module 520 is further configured to determine that the data service is an uplink data service, where the processing module 520 does not perform downlink data transmission on the resource indicated by the resource location indication information, or the processing module 520 adjusts the transmission power or the beam transmission direction when performing downlink data transmission on the resource indicated by the resource location indication information.

the processing module 520 is further configured to determine that the resource indicated by the resource location indication information is an uplink resource, and when the data service is a downlink data service, the processing module 520 does not perform uplink data transmission on the resource indicated by the resource location indication information, or the processing module 520 adjusts a transmission power or a beam transmitting direction when performing uplink data transmission on the resource indicated by the resource location indication information; alternatively, the first and second electrodes may be,

the processing module 520 is further configured to determine that the resource indicated by the resource location indication information is an uplink resource, and when the data service is an uplink data service, the processing module 520 does not perform downlink data transmission on the resource indicated by the resource location indication information, or the processing module 520 adjusts the transmission power or the beam transmission direction when performing downlink data transmission on the resource indicated by the resource location indication information.

Optionally, in another specific implementation manner of the embodiment of the present invention, the receiving module 510 is further configured to receive an interference coordination release instruction, which is sent by the first access network device and corresponds to the data service, and the processing module 520 is further configured to release an interference coordination behavior according to the interference coordination release instruction.

Optionally, in another specific implementation manner of the embodiment of the present invention, the method further includes: and a sending module.

The sending module is used for sending an avoidance instruction corresponding to the data service to the first access network device.

Referring to fig. 6, a schematic structural diagram of an access network device according to an embodiment of the present invention is provided. The access network device may be the first access network device or the second access network device in any of the foregoing embodiments, and is configured to implement the method steps in the foregoing embodiments.

The access network device may be composed of a processor 610, a memory 620, a transceiver 630, and the like.

The processor 610 is a control center of the access network device, connects various portions of the entire access network device using various interfaces and lines, and performs various functions of the access network device and/or processes data by running or executing software programs and/or modules stored in the memory and calling data stored in the memory 620. The processor 610 may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of CPU and NP. The processor 610 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.

The memory 620 may include a volatile memory (volatile memory), such as a Random Access Memory (RAM); a non-volatile memory (non-volatile memory) may also be included, such as a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); the memory 620 may also comprise a combination of the above types of memory. The memory may have stored therein a program or code that can be executed by the processor 610 in the access network device to carry out the functions of the access network device.

The transceiver 630 may be configured to receive or transmit data, and the transceiver may transmit data to a terminal device or other access network device under the control of the processor; and the transceiver receives data sent by the terminal equipment or other access network equipment under the control of the processor.

In the embodiment of the present invention, the transceiver 630 may be configured to implement the method steps of receiving and transmitting by the first access network device in the embodiment shown in fig. 3, and the processor 610 may be configured to implement the method steps of determining, by the first access network device, the first indication information of the data service in the embodiment shown in fig. 3. The functions to be implemented by the sending module 420 in fig. 4 may be implemented by the transceiver 630 of the access network device, or by the transceiver 630 controlled by the processor 610; the functions to be performed by the processing module 410 of fig. 4 may be performed by the processor 610.

In this embodiment of the present invention, the transceiver 630 may be configured to implement the method steps of receiving and sending by the second access network device in the embodiment shown in fig. 3, and the processor 610 may be configured to implement the second access network device in the embodiment shown in fig. 3 to determine the resource indicated by the resource location indication information, and determine whether the data service is an uplink data service or a downlink data service according to the second indication information; and the second access network equipment takes the interference coordination action on the resource indicated by the resource position indication information. The functions to be implemented by the receiving module 510 in fig. 5 can be implemented by the transceiver 630 of the access network device, or by the transceiver 630 controlled by the processor 610; the functions to be performed by the processing module 520 of fig. 5 may be performed by the processor 610.

In specific implementation, the embodiment of the present invention further provides a computer storage medium, where the computer storage medium may store a program, and the program may include some or all of the steps in the embodiments provided in the embodiment of the present invention when executed. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a Random Access Memory (RAM).

Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented as software plus a required general purpose hardware platform. Based on such understanding, the technical solutions in the embodiments of the present invention may be essentially or partially implemented in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or an access network device, etc.) to execute the method described in the embodiments or some parts of the embodiments of the present invention.

In the present specification, the system and apparatus embodiments are substantially similar to the method embodiments, so that the description is simple, and reference may be made to some descriptions of the method embodiments for relevant points.

Claims

1. An information transmission method, comprising:

the first access network equipment sends the first indication information to second access network equipment;

the sending, by the first access network device, the first indication information to the second access network device includes: the first access network equipment sends the first indication information to the second access network equipment through first sending power, wherein the first sending power is smaller than or equal to a preset threshold value;

alternatively, the first and second electrodes may be,

the sending, by the first access network device, the first indication information to the second access network device includes: the first access network equipment sends the first indication information to the second access network equipment by adopting a predefined transmission format, wherein the predefined transmission format comprises at least one of a predefined coding modulation mode and a predefined beam direction;

before the first access network device sends the first indication information to the second access network device, the method further includes:

the first access network equipment determines that the data service is an uplink data service, and the resource indicated by the resource position indication information is a downlink resource; alternatively, the first and second electrodes may be,

2. The method of claim 1, wherein the second indication information indicates that the data service is an uplink data service, and wherein the determining, by the first access network device, the first indication information of the data service comprises:

3. The method of claim 1, wherein the first access network device sending the first indication information to a second access network device comprises:

4. The method of claim 2, wherein the first access network device sending the first indication information to a second access network device comprises:

5. The method of any of claims 1-4, wherein sending the first indication information from the first access network device to the second access network device comprises:

the first access network equipment sends the first indication information to the second access network equipment through time-frequency resources of a physical downlink control channel; or the like, or, alternatively,

the first access network equipment sends the first indication information to the second access network equipment through time-frequency resources of a physical uplink control channel; or the like, or, alternatively,

6. The method according to any one of claims 1-4, wherein the first indication information further comprises:

7. The method of claim 5, wherein the first indication information further comprises:

8. An information transmission method, comprising:

the first indication information further includes:

at least one of service level indication information, beam direction indication information, modulation mode indication information and antenna port indication information of the data service;

9. An information transmission method, comprising:

10. An information receiving method, comprising:

the second access network equipment determines the resource indicated by the resource position indication information and determines whether the data service is an uplink data service or a downlink data service according to the second indication information;

wherein the first indication information further includes: at least one of service level indication information, beam direction indication information, modulation mode indication information and antenna port indication information of the data service;

the second access network device takes an interference coordination action on the resource indicated by the resource position indication information, including:

When the second access network device determines that the data service is an uplink data service, the second access network device does not perform downlink data transmission on the resource indicated by the resource position indication information, or the second access network device adjusts the transmission power or the beam transmission direction when performing downlink data transmission on the resource indicated by the resource position indication information.

11. The method of claim 10, wherein the second access network device receives the first indication information sent by the first access network device, and wherein the receiving comprises:

12. The method of claim 10, wherein the second access network device receives the first indication information sent by the first access network device, and wherein the receiving comprises:

the second access network equipment receives the first indication information sent by the first access network equipment through time-frequency resources of a physical downlink control channel; or the like, or, alternatively,

the second access network equipment receives the first indication information sent by the first access network equipment through time-frequency resources of a physical uplink control channel; or the like, or, alternatively,

13. The method of claim 11, wherein the second access network device receives the first indication information sent by the first access network device, and wherein the receiving comprises:

14. The method according to any one of claims 10-13, further comprising:

and the second access network equipment takes interference coordination action on the resource indicated by the resource position indication information.

15. An information receiving method, comprising:

the second access network device receiving the first indication information sent by the first access network device includes: the method comprises the steps that a second access network device receives first indication information sent by a first access network device through first sending power, wherein the first sending power is smaller than or equal to a preset threshold value;

alternatively, the first and second electrodes may be,

the second access network device receiving the first indication information sent by the first access network device includes: the method comprises the steps that a second access network device receives first indication information sent by a first access network device by adopting a predefined transmission format, wherein the predefined transmission format comprises at least one of a predefined coding modulation mode and a predefined beam direction;

wherein the content of the first and second substances,

the second access network equipment takes interference coordination action on the resource indicated by the resource position indication information, and the interference coordination action comprises the following steps:

16. An information transmission apparatus arranged in a first access network device, characterized by comprising:

a processing module, configured to determine first indication information of a data service, where the first indication information includes resource location indication information of the data service and second indication information indicating whether the data service is an uplink data service or a downlink data service;

a sending module, configured to send the first indication information to a second access network device;

the sending module is specifically configured to send the first indication information to the second access network device through a first sending power, where the first sending power is less than or equal to a preset threshold;

or, the sending module is specifically configured to send the first indication information to the second access network device by using a predefined transmission format, where the predefined transmission format includes at least one of a predefined modulation and coding scheme and a predefined beam direction;

wherein the content of the first and second substances,

the processing module is further configured to determine that the data service is an uplink data service and the resource indicated by the resource location indication information is a downlink resource before sending the first indication information to the second access network device; or the processing module is further configured to determine that the data service is a downlink data service and the resource indicated by the resource location indication information is an uplink resource before sending the first indication information to the second access network device.

17. The apparatus of claim 16, further comprising:

a receiving module, configured to receive a transmission parameter sent by a terminal device, where the transmission parameter includes the resource location indication information, and the second indication information indicates that the data service is an uplink data service.

18. The apparatus of claim 16, wherein the sending module is specifically configured to send the first indication information to the second access network device over an air interface in a broadcast manner.

19. The apparatus of claim 17, wherein the sending module is specifically configured to send the first indication information to the second access network device over an air interface in a broadcast manner.

20. The apparatus according to any one of claims 16 to 19,

the sending module is specifically configured to send the first indication information to the second access network device through a time-frequency resource of a physical downlink control channel; or the like, or, alternatively,

the sending module is specifically configured to send the first indication information to the second access network device through a time-frequency resource of a physical uplink control channel; or the like, or, alternatively,

the sending module is specifically configured to send the first indication information to the second access network device through the reserved time domain resources and/or frequency domain resources.

21. The apparatus according to any one of claims 16-19, wherein the first indication information further comprises:

22. The apparatus of claim 20, wherein the first indication information further comprises:

23. An information transmission apparatus arranged in a first access network device, characterized by comprising:

wherein the first indication information further includes:

the processing module is further configured to determine that the data service is an uplink data service and the resource indicated by the resource location indication information is a downlink resource before sending the first indication information to the second access network device; or, the processing module is further configured to determine that the data service is a downlink data service and the resource indicated by the resource location indication information is an uplink resource before sending the first indication information to the second access network device.

24. An information transmission apparatus arranged in a first access network device, characterized by comprising:

wherein the content of the first and second substances,

25. An information receiving apparatus arranged in a second access network device, characterized by comprising:

the processing module is used for determining the resource indicated by the resource position indication information and determining whether the data service is an uplink data service or a downlink data service according to the second indication information;

wherein the first indication information further includes:

the processing module is further configured to determine that the data service is a downlink data service, where the processing module does not perform uplink data transmission on the resource indicated by the resource location indication information, or the processing module adjusts a transmission power or a beam transmission direction when performing uplink data transmission on the resource indicated by the resource location indication information; or

The processing module is further configured to determine that the data service is an uplink data service, where the processing module does not perform downlink data transmission on the resource indicated by the resource location indication information, or the processing module adjusts the transmission power or the beam transmission direction when performing downlink data transmission on the resource indicated by the resource location indication information.

26. The apparatus of claim 25, wherein the receiving module is specifically configured to receive the first indication information sent by the first access network device by broadcasting over the air.

27. The apparatus of claim 25,

the receiving module is specifically configured to receive the first indication information sent by the first access network device through a time-frequency resource of a physical downlink control channel; or the like, or, alternatively,

the receiving module is specifically configured to receive the first indication information sent by the first access network device through a time-frequency resource of a physical uplink control channel; or the like, or, alternatively,

the receiving module is specifically configured to receive the first indication information sent by the first access network device through a reserved time domain resource and/or a reserved frequency domain resource.

28. The apparatus of claim 26,

29. The apparatus of any one of claims 25-28, wherein the processing module is further configured to take interference coordination action on resources indicated by the resource location indication information.

30. An access network device comprising a processor and a memory;

wherein the processor is configured to execute a computer program stored in the memory to perform the method of any of claims 1 to 15.

31. A computer-readable storage medium, characterized in that,

the computer-readable storage medium stores a computer program which, when executed by hardware, is capable of implementing the method of any one of claims 1 to 15.