An interference coordination method, related devices and apparatuses and systems

Abstract

The application discloses a method, related device, apparatus and system for interference coordination, which can include: an interference source obtaining channel quality information; the interference source determining an interference direction based on the channel quality information, and the interference direction being accurate to a specific beam direction; and the interference source performing a preset interference reduction operation when scheduling data for a terminal device in the beam direction causing the interference. In the embodiment of the application, the interference source reduces the influence range of the interference to a certain direction (i.e. the beam level) by reducing the same-frequency interference in the accurate interference direction (the specific beam direction), so as to guarantee the user experience of more users as much as possible, without the need of deploying different frequencies, and without occupying more frequency resources.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to a method for interference coordination, related devices, apparatuses and systems. BACKGROUND

[0002] With the continuous development and evolution of communication technology, the available spectrum resources of communication systems are also becoming less and less, and it is gradually necessary to adopt same-frequency networking to improve spectrum utilization and reduce waste of spectrum resources. For reference Figure 1 , Figure 1 is an architecture diagram of a hetero-frequency networking and a same-frequency networking in the prior art, wherein each access network device in the hetero-frequency networking can be respectively configured with three service cells, and the frequency resources used by each cell are different (such as F0, F1 and F2 in the hetero-frequency networking in Figure 1 Each access network device in the same-frequency networking can also be respectively configured with three service cells, but the frequency resources used by each cell are the same (such as F0 in the same-frequency networking in Figure 1 It is obvious that one of the main problems of the same-frequency networking is that the interference between cells is serious, especially when the access network device uses the Massive Multiple-Input Multiple-Output (Massive MIMO) technology to form a narrow beam with stronger energy and more concentration for communication, the interference to the adjacent cells is more serious, and the experience of users in the adjacent cells is seriously affected. In the actual communication process, in order to reduce the interference to the adjacent cells and protect the experience of users in the adjacent cells, measures for reducing interference need to be taken.

[0003] However, the measures for reducing the same-frequency interference in the prior art commonly have optimization of the networking architecture and optimization of the radio frequency, wherein the optimization of the networking architecture often needs to occupy more frequency resources (such as deployment of hetero-frequency); and the optimization of the radio frequency is mostly to reduce the power of the interference source or even to shut down the interference source to solve the interference problem, which not only protects the experience of users in the adjacent cells, but also makes most of the users served by the interference source unable to be protected in communication experience. Therefore, how to provide a solution for reducing interference without occupying more frequency resources and with as little impact as possible on the users of the interference source is a problem to be solved. SUMMARY

[0004] The embodiments of the present application provide a method for interference coordination, related devices, apparatuses and systems, which can not occupy more frequency resources and with as little impact as possible on the users of the interference source, and protect the experience of more users.

[0005] In a first aspect, the embodiments of the present application provide a method for interference coordination, applied to a first access network device, which can include: obtaining channel quality information, the channel quality information including one or more of first channel quality information between one or more terminal devices and the first access network device and second channel quality information between the one or more terminal devices and a second access network device; the first channel quality information and the second channel quality information including one or more of sounding reference signal (SRS) measurement results, channel state information reference signal (CSI-RS) measurement results, and synchronization signal block (SSB) information; determining an interference direction based on the channel quality information; and performing a preset interference reduction operation when scheduling data for terminal devices in the interference direction, the preset interference reduction operation including one or more of reducing power, beam steering based on beam domain zero forcing processing, and staggering scheduling with the second access network device in time domain or frequency domain.

[0006] In the scenario of detecting inter-cell co-channel interference in the embodiments of the present application, the interference source (such as the first access network device) receives the channel quality information (such as the channel quality information between the terminal device and the interference source or the interfered device) sent by the terminal device under the interference source or the interfered device or the interfered device (such as the second access network device), so as to determine the specific interference direction of the interference source to the interfered device, and the specific interference direction is accurate to a certain beam direction in the process of determining the specific interference direction. Therefore, subsequent operation of reducing co-channel interference can be performed only on the specific beam direction, without affecting the normal communication quality of users in other beam directions, thereby reducing the loss of user communication experience under the interference source as much as possible while preferentially guaranteeing the communication experience of users under the interfered device. Specifically, the interference source (i.e., the first access network device) obtains channel quality information, wherein the channel quality information can include one or more of the channel quality information between one or more terminal devices and the interference source (i.e., the first access network device) (i.e., the first channel quality information) and the channel quality information between the one or more terminal devices and the interfered device (i.e., the second access network device) (i.e., the second channel quality information). The channel quality information can be obtained by the interference source through receiving the message of the terminal device, or obtained by the interference source through receiving the message of the interfered device (i.e., the second access network device), or obtained by the interference source through receiving the message of the core network device. Then, the interference source determines the specific interference direction through the channel quality information, and can be accurate to a specific beam direction. The interference source determines the specific interference direction can be based on the channel quality information between one or more terminal devices and the interference source (i.e., the first access network device) (i.e., the first channel quality information) and the channel quality information between the one or more terminal devices and the interfered device (i.e., the second access network device) (i.e., the second channel quality information) to determine that the one or more terminal devices are affected by co-channel interference, and then according to the beam used by the interference source and the one or more terminal devices when interacting, the specific beam direction is known, so that the specific interference direction is clear. Finally, the interference source performs the interference reduction operation when scheduling data for users in the interference direction (i.e., the specific beam direction), thereby realizing interference coordination. Unlike the prior art, the interference reduction operation needs to be performed on all directions of the beams in a certain cell of the interference source or all directions of the beams transmitted by the interference source, that is, the power reduction operation needs to be performed on all directions of the beams in a certain cell of the interference source or all directions of the beams transmitted by the interference source. In the embodiments of the present application, the interference source reduces co-channel interference in the accurate interference direction (i.e., the specific beam direction), thereby reducing the influence range of the cell level or even the device level to a certain direction (i.e., the beam level), thereby guaranteeing the user experience of more users as much as possible, without the need for frequency deployment, and without occupying more frequency resources.

[0007] In a possible implementation, the one or more terminal devices are users camping on a serving cell of the second access network device; the channel quality information comprises the first channel quality information and the second channel quality information; and the obtaining of the channel quality information comprises: receiving the second channel quality information and sounding reference signal (SRS) configuration information of the one or more terminal devices sent by the second access network device; and performing measurement on the one or more terminal devices based on the SRS configuration information to obtain the first channel quality information.

[0008] In the embodiments of the present application, the one or more terminal devices are users camping on a serving cell of the interfered device (i.e., the second access network device), and the interference source (i.e., the first access network device) can obtain the channel quality information by performing SRS measurement on the one or more terminal devices and receiving messages of the interfered device, the channel quality information can comprise channel quality information between the one or more terminal devices and the interference source (i.e., the first access network device) and channel quality information between the one or more terminal devices and the interfered device (i.e., the second access network device), so as to determine a specific interference direction and can be accurate to a specific beam direction, and thus can perform interference reduction operation only in the beam direction. Based on the example in the embodiments of the present application, the terminal device is a user of the interfered device, and the channel quality information between the interfered device and the terminal device can be measured by the interfered device or the terminal device and sent to the interference source; and the channel quality information between the interference source and the terminal device can be measured by the interference source through SRS measurement on the terminal device, and by distributing the measurement of the channel quality information on different devices in parallel, the measurement efficiency can be effectively improved, and meanwhile, the complexity of the above three types of devices is not excessively increased.

[0009] In a possible implementation, the one or more terminal devices are users currently camping on a serving cell of the second access network device, and measurement results of the one or more terminal devices on the first access network device satisfy a first preset threshold value; the channel quality information comprises first channel quality information; and the obtaining of the channel quality information comprises: performing resource admission on the one or more terminal devices switched from the second access network device, and obtaining the first channel quality information fed back by the one or more terminal devices.

[0010] In the embodiments of the present application, the one or more terminal devices are users camping on a serving cell of the interfered device (i.e., the second access network device). The interfered device can instruct the one or more terminal devices to measure the interference source, and then switch the one or more terminal devices to the interference source according to the measurement result. Then, the interference source determines the specific interference direction through the information fed back by the one or more terminal devices, and can perform the operation of reducing interference only in the interference direction. Based on the example in the embodiments of the present application, the terminal device is a user of the interfered device, and the channel quality information between the interfered device and the terminal device can be measured by the interfered device or the terminal device and sent to the interference source. The channel quality information between the interference source and the terminal device can be measured by the terminal device through measuring the interference source. By distributing the measurement of the channel quality information on different devices in parallel, the measurement efficiency can be effectively improved, and the complexity of the above three types of devices is not increased too much.

[0011] In a possible implementation, the one or more terminal devices are users camping on a serving cell of the second access network device; the measurement result of the one or more terminal devices on the first access network device satisfies a first preset threshold value; the channel quality information includes first channel quality information; and the obtaining of the channel quality information includes: receiving the first channel quality information sent by the second access network device, the first channel quality information being obtained by the one or more terminal devices measuring the first access network device.

[0012] In the embodiments of the present application, the one or more terminal devices are users camping on a serving cell of the interfered device (i.e., the second access network device). The interfered device can instruct the one or more terminal devices to measure the interference source, and then switch the one or more terminal devices to the interference source according to the measurement result. Then, the interference source determines the specific interference direction through the information fed back by the one or more terminal devices, and can perform the operation of reducing interference only in the interference direction. Based on the example in the embodiments of the present application, the terminal device is a user of the interfered device, and the channel quality information between the interfered device and the terminal device can be measured by the interfered device or the terminal device and sent to the interference source. The channel quality information between the interference source and the terminal device can be measured by the terminal device through measuring the interference source, the interfered device sends the specific beam direction information to the interference source after determining the specific beam direction based on the channel quality information, and by distributing the measurement of the channel quality information and the determination of the beam direction on the interfered device, the device complexity of the interference source can be effectively reduced.

[0013] In a possible implementation, the one or more terminal devices are users camping on a serving cell of the first access network device; the channel quality information comprises first channel quality information and second channel quality information; and the obtaining the channel quality information comprises: receiving the first channel quality information and the second channel quality information fed back by the one or more terminal devices, wherein the first channel quality information is measured by the one or more terminal devices on the first access network device, and the second channel quality information is measured by the one or more terminal devices on the second access network device.

[0014] In the embodiments of the present application, the one or more terminal devices are users camping on a serving cell of the interference source (i.e., the first access network device), the interference source determines the specific beam causing interference by instructing the one or more terminal devices to measure the interfered device, and then determines the specific beam direction causing interference according to the measurement result, so as to realize interference coordination when data is scheduled to the users in the direction. Based on the example in the embodiments of the present application, the terminal device is a user of the interference source, and the channel quality information between the interfered device and the terminal device can be measured by the terminal device; and the channel quality information between the interference source and the terminal device can be measured by the terminal device or the interference source. The interference source determines the specific beam direction based on the above channel quality information, and by distributing the measurement of the channel quality information and the determination of the beam direction on the interference source, the device complexity of the interfered device can be effectively reduced.

[0015] In a possible implementation, the performing the preset interference reduction operation comprises: performing the preset interference reduction operation when the load of the first access network device is lower than a first preset condition; and the first preset condition comprises one or more of the following conditions: the number of users of the first access network device is lower than a first preset value, and the resource occupation rate of the first access network device is lower than a second preset value; wherein the resource occupation rate comprises one or more of an uplink resource occupation rate and a downlink resource occupation rate.

[0016] In the embodiments of the present application, the interference source (i.e., the first access network device) can determine whether to perform interference coordination according to its own load condition. When the load of the interference source is lower than a certain threshold value, such as the number of users is lower than a certain preset value, or the uplink resource occupation rate or the downlink resource occupation rate is lower than a certain preset value, interference coordination can be performed; and when the load of the interference source is high to a certain extent, interference coordination can also not be performed, so as to guarantee the experience of the users of the interference source.

[0017] In a possible implementation, the method further comprises: receiving an interference coordination request sent by the second access network device, wherein the interference coordination request is used to request the first access network device to perform the preset interference reduction operation.

[0018] In the embodiments of the present application, the interference source (i.e., the first access network device) can determine whether to perform interference coordination according to whether the interference coordination request is sent by the interfered device (i.e., the second access network device), so that resource waste caused by frequent interference coordination can be avoided.

[0019] In a second aspect, the embodiments of the present application provide an interference coordination method applied to a second access network device, which can include: sending a first message to the first access network device, the first message including one or more of SRS configuration information of one or more terminal devices, first channel quality information, and second channel quality information; the first channel quality information being channel quality information between the one or more terminal devices and the first access network device, and the second channel quality information being channel quality information between the one or more terminal devices and the second access network device.

[0020] In the embodiments of the present application, the one or more terminal devices are users of a serving cell of the interfered device (i.e., the second access network device), and the interference source (i.e., the first access network device) can obtain the channel quality information by performing SRS measurement on the one or more terminal devices and receiving messages of the interfered device, the channel quality information can include channel quality information between the one or more terminal devices and the interference source (i.e., the first access network device) and channel quality information between the one or more terminal devices and the interfered device (i.e., the second access network device), so that the specific interference direction can be determined, and can be accurate to the specific beam direction, and thus the operation of reducing interference can be performed only in the beam direction. Based on the example in the embodiments of the present application, the way of reducing co-frequency interference in the accurate interference direction can reduce the influence range of the cell level or even the device level to a certain direction (i.e., the beam level), so as to guarantee the user experience of more users as much as possible, and does not need to be deployed in different frequencies, and does not occupy more frequency resources. In addition, the terminal device is a user of the interfered device, and the channel quality information between the interfered device and the terminal device can be measured by the interfered device or the terminal device and sent to the interference source, and the channel quality information between the interference source and the terminal device can be measured by the interference source through SRS measurement on the terminal device, so that the measurement efficiency can be effectively improved by distributing the measurement of the channel quality information on different devices in parallel, and the complexity of the above three types of devices is not increased too much.

[0021] In a possible implementation, the method further includes: sending an interference coordination request to the first access network device; or sending an interference coordination request to the first access network device when a load of the second access network device reaches a second preset condition; the second preset condition includes one or more of the following conditions: a number of users of the second access network device is greater than a third preset value, a resource occupation rate of the second access network device is greater than a fourth preset value; wherein the resource occupation rate includes one or more of an uplink resource occupation rate and a downlink resource occupation rate.

[0022] In a third aspect, an interference coordination apparatus is provided, which is applied to a first access network device and can include: an obtaining unit configured to obtain channel quality information, the channel quality information including one or more of first channel quality information between one or more terminal devices and the first access network device and second channel quality information between the one or more terminal devices and a second access network device; the first channel quality information and the second channel quality information including one or more of sounding reference signal (SRS) measurement results, channel state information reference signal (CSI-RS) measurement results, and synchronization signal block (SSB) information; a determining unit configured to determine an interference direction based on the channel quality information; and a processing unit configured to perform a preset interference reduction operation when data is scheduled for a terminal device in the interference direction, the preset interference reduction operation including one or more of reducing power, beam steering based on beam domain zero forcing processing, and staggering scheduling in a time domain or a frequency domain with the second access network device.

[0023] In the scenario of detecting inter-cell co-channel interference in the embodiments of the present application, the interference source (such as the first access network device) receives the channel quality information (such as the channel quality information between the terminal device and the interference source or the interfered device) sent by the terminal device under the interference source or the interfered device or the interfered device (such as the second access network device), so as to determine the specific interference direction of the interference source to the interfered device, and the specific interference direction is accurate to a certain beam direction in the process of determining the specific interference direction. Therefore, subsequent operation of reducing co-channel interference can be performed only on the specific beam direction, without affecting the normal communication quality of users in other beam directions, thereby reducing the loss of user communication experience under the interference source as much as possible while preferentially guaranteeing the communication experience of users under the interfered device. Specifically, the interference source (i.e., the first access network device) obtains the channel quality information through an obtaining unit, wherein the channel quality information can include one or more of the channel quality information between the one or more terminal devices and the interference source (i.e., the first access network device) (i.e., the first channel quality information) and the channel quality information between the one or more terminal devices and the interfered device (i.e., the second access network device) (i.e., the second channel quality information). The channel quality information can be obtained by the interference source through receiving the message of the terminal device, or obtained by the interference source through receiving the message of the interfered device (i.e., the second access network device), or obtained by the interference source through receiving the message of the core network device. Then, the interference source determines the specific interference direction based on the channel quality information through a determining unit, and can be accurate to a specific beam direction. The interference source determines the specific interference direction can be based on the channel quality information between the one or more terminal devices and the interference source (i.e., the first access network device) (i.e., the first channel quality information) and the channel quality information between the one or more terminal devices and the interfered device (i.e., the second access network device) (i.e., the second channel quality information) to determine that the one or more terminal devices are affected by co-channel interference, and then according to the beam used by the interference source and the one or more terminal devices when interacting, the specific beam direction is known, so that the specific interference direction is clear. Finally, the interference source performs the interference reduction operation when scheduling data for users in the interference direction (i.e., the specific beam direction) through a processing unit, thereby realizing interference coordination. Unlike the prior art, the interference source needs to be deployed in different frequencies to reduce co-channel interference or reduce power according to the cell level or even the device level, that is, the interference source needs to reduce the power of all beams in a certain cell of the interference source or all beams transmitted by the interference source. In the embodiments of the present application, the interference source reduces co-channel interference in the accurate interference direction (i.e., the specific beam direction), thereby reducing the influence range of the cell level or even the device level to a certain direction (i.e., the beam level), thereby guaranteeing the user experience of more users as much as possible, without the need for different frequency deployment, and without occupying more frequency resources.

[0024] In a possible implementation, the one or more terminal devices are users camping on a serving cell of the second access network device; the channel quality information comprises the first channel quality information and the second channel quality information; and the obtaining unit is specifically configured to: receive the second channel quality information and sounding reference signal (SRS) configuration information of the one or more terminal devices sent by the second access network device; and measure the one or more terminal devices based on the SRS configuration information to obtain the first channel quality information.

[0025] In a possible implementation, the one or more terminal devices are users currently camping on a serving cell of the second access network device, and measurement results of the one or more terminal devices on the first access network device satisfy a first preset threshold value; the channel quality information comprises first channel quality information; and the obtaining unit is specifically configured to: perform resource admission on the one or more terminal devices handed over from the second access network device, and obtain the first channel quality information fed back by the one or more terminal devices.

[0026] In a possible implementation, the one or more terminal devices are users camping on a serving cell of the second access network device; measurement results of the one or more terminal devices on the first access network device satisfy a first preset threshold value; and the channel quality information comprises first channel quality information; the obtaining unit is specifically configured to: receive the first channel quality information sent by the second access network device, the first channel quality information being obtained by the one or more terminal devices measuring the first access network device.

[0027] In a possible implementation, the one or more terminal devices are users camping on a serving cell of the first access network device; the channel quality information comprises first channel quality information and second channel quality information; and the obtaining unit is specifically configured to: receive the first channel quality information and the second channel quality information fed back by the one or more terminal devices, the first channel quality information being obtained by the one or more terminal devices measuring the first access network device, and the second channel quality information being obtained by the one or more terminal devices measuring the second access network device.

[0028] In a possible implementation, the processing unit is specifically configured to: perform the preset interference reduction operation when a load of the first access network device is lower than a first preset condition; and the first preset condition comprises one or more of the following conditions: a number of users of the first access network device is lower than a first preset value, and a resource occupation rate of the first access network device is lower than a second preset value; and the resource occupation rate comprises one or more of an uplink resource occupation rate and a downlink resource occupation rate.

[0029] In a possible implementation, the apparatus further includes a receiving unit configured to receive an interference coordination request sent by the second access network device, the interference coordination request being used to request the first access network device to perform the preset interference reduction operation.

[0030] In a fourth aspect, an embodiment of the present application provides an interference coordination apparatus applied to a second access network device, which can include a sending unit configured to send a first message to the first access network device, the first message including one or more of SRS configuration information of one or more terminal devices, first channel quality information, and second channel quality information; the first channel quality information being channel quality information between the one or more terminal devices and the first access network device, and the second channel quality information being channel quality information between the one or more terminal devices and the second access network device.

[0031] In the embodiment of the present application, the one or more terminal devices are users of a serving cell of a device being interfered (i.e., the second access network device), and an interference source (i.e., the first access network device) can obtain channel quality information by performing SRS measurement on the one or more terminal devices and receiving a message of the device being interfered, the channel quality information including channel quality information between the one or more terminal devices and the interference source (i.e., the first access network device) and channel quality information between the one or more terminal devices and the device being interfered (i.e., the second access network device), so as to determine a specific interference direction and can be accurate to a specific beam direction, and thus can perform interference reduction operation only in the beam direction. Based on the example in the embodiment of the present application, the terminal device is a user of the device being interfered, and channel quality information between the device being interfered and the terminal device can be measured by the device being interfered or the terminal device and sent to the interference source; and channel quality information between the interference source and the terminal device can be measured by the interference source through SRS measurement on the terminal device, and by distributing measurement of the channel quality information on different devices in parallel, the measurement efficiency can be effectively improved, and meanwhile, the complexity of the above three types of devices is not excessively increased.

[0032] In a possible implementation, the sending unit is further configured to send an interference coordination request to the first access network device; or send an interference coordination request to the first access network device when a load of the second access network device reaches a second preset condition; the second preset condition including one or more of the following conditions: a number of users of the second access network device is greater than a third preset value, a resource occupation rate of the second access network device is greater than a fourth preset value; wherein the resource occupation rate includes one or more of an uplink resource occupation rate and a downlink resource occupation rate.

[0033] In a fifth aspect, an embodiment of the present application provides a communication apparatus, which comprises a processor configured to support the communication apparatus to implement the corresponding functions in the interference coordination method provided in one or more of the first aspect and the second aspect. The communication apparatus can further comprise a memory coupled to the processor, which stores the necessary program instructions and data for the communication apparatus. The communication apparatus can further comprise a communication interface for the communication apparatus to communicate with other devices or communication networks.

[0034] In a sixth aspect, an embodiment of the present application provides a communication system, which comprises one or more terminal devices and one or more access network devices, and the one or more terminal devices and the one or more access network devices are communicatively connected, wherein the one or more network devices perform the method according to any one of the first aspect and the second aspect.

[0035] In a seventh aspect, an embodiment of the present application provides a computer readable storage medium, which is used to store the computer software instructions used in the processor of the device apparatus for implementing the interference coordination method provided in one or more of the third aspect, the fourth aspect and the fifth aspect, and the computer software instructions contain the programs designed in the above aspects.

[0036] In an eighth aspect, an embodiment of the present application provides a chip system, which comprises a processor configured to support the device to implement the functions involved in one or more of the first aspect and the second aspect, for example, to generate or process the information involved in the interference coordination method. In a possible design, the chip system further comprises a memory configured to store the necessary program instructions and data for the device. The chip system can be composed of a chip, or can comprise a chip and other discrete devices.

[0037] In a ninth aspect, an embodiment of the present application provides a computer program, which comprises instructions, when the computer program is executed by a computer, the computer can execute the flow performed by the processor in the communication apparatus in the fourth aspect. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the background art, the following will describe the drawings needed to be used in the embodiments of the present application or the background art.

[0039] Figure 1 is an architecture diagram of a hetero-frequency networking and a homo-frequency networking in the prior art.

[0040] Figure 2 is an architecture diagram of a communication system provided by an embodiment of the present application.

[0041] Figure 3is a flow chart of a method for interference coordination provided by an embodiment of the application.

[0042] Figure 4a is a schematic diagram of a method for interference coordination provided by an embodiment of the application.

[0043] Figure 4b is a flow chart of a method for interference coordination provided by an embodiment of the application.

[0044] Figure 4c is a schematic diagram of a method for determining an interference direction of co-frequency interference provided by an embodiment of the application.

[0045] Figure 4d is a schematic diagram of an implementation of interference coordination provided by an embodiment of the application.

[0046] Figure 5 is a flow chart of a method for interference coordination provided by an embodiment of the application.

[0047] Figure 6 is a flow chart of a method for interference coordination provided by an embodiment of the application.

[0048] Figure 7a is a schematic diagram of a method for interference coordination provided by an embodiment of the application.

[0049] Figure 7b is a flow chart of a method for interference coordination provided by an embodiment of the application.

[0050] Figure 8 is a schematic diagram of a structure of an access network device provided by an embodiment of the application.

[0051] Figure 9 is a schematic diagram of a structure of an access network device provided by an embodiment of the application.

[0052] Figure 10 is a schematic diagram of a structure of a communication apparatus 1000 provided by an embodiment of the application. DETAILED DESCRIPTION

[0053] The embodiments of the present application will be described below with reference to the accompanying drawings.

[0054] The terms "first", "second", "third", and "fourth" and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Moreover, the terms "include", and "have", and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a list of steps or elements is not necessarily limited to those listed steps or elements but can include other not-listed steps or elements. The term "about" when used in connection with a numerical value throughout the present application means an acceptable variation of the numerical value, such as a variation of ±10%, ±5%, or ±1% of the numerical value.

[0055] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in one or more embodiments of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, or to a single alternative embodiment. It is explicitly contemplated that embodiments described herein can be combined with each other.

[0056] As used in this specification, the terms "component," "module," "system", and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and / or thread of execution and a component can be localized, partially localized, and / or distributed across two or more computers. Also, these components can execute from various computer readable media having various data structures stored thereon. The components can communicate by way of local and / or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component interacting with another component in a local system, distributed system, and / or across a network such as the Internet with other systems via the signal).

[0057] First, some terms used in the present application are explained and described in order to facilitate the understanding of the skilled in the art.

[0058] (1) Beam, in the multi-antenna scenario, the level can be enhanced in a specific direction by different antenna weights to form a "beam", different channels have different weights, and the width of the beam formed also has differences. Generally speaking, the New Radio (NR) cell Synchronization Signal Block (SSB) channel beam is wider, and the Physical downlink shared channel (PDSCH) and Channel state information Reference Signal (CSI-RS) channel beams are narrower. For the SSB beam, the protocol defines the time domain position of the different SSB beams under different configurations. For the terminal device, the time domain information of the beam can be obtained by combining the information in the broadcast message and the measurement, and the currently measured SSB ID can be determined. In the embodiment of the present application, when applied to the same frequency interference detection scenario of the NR system, the specific interference direction can be determined according to the correspondence between the user beam and the SSB beam after the SSB ID is determined, so that the beam order interference coordination can be realized. Of course, the specific interference direction can also be determined through SRS measurement results and CSI-RS measurement results, which is not limited here.

[0059] (2) Radio Resource Control (RRC), which allocates and sends related signaling of wireless resources. The RRC signaling carries all the parameters required for establishing, modifying and releasing layer 2 and physical layer protocol entities, and also carries some signaling of the Non-Access Stratum (NAS), such as signaling for mobility management or session management. In the present application, the RRC signaling can be used to transmit the indication information sent by the access network device to the terminal device.

[0060] (3) Channel measurement resource, which refers to the resource configured by the access network device for channel measurement. The channel measurement resource can be used to measure the received reference signal power (Reference Signal Receiving Power, RSRP), channel quality indicator (Channel Quality Indicator, CQI), signal to interference and noise ratio (Signal to Interference and Noise Ratio, SINR) and other channel information. When measuring CQI and SINR and other channel information, interference measurement resources also need to be configured.

[0061] (4) Interference measurement resource, refers to the resource configured by the access network device for channel measurement. When measuring channel information such as CQI and SINR, the interference measurement resource is used as the interference source to calculate CQI and SINR together with the channel measurement resource. For example, when measuring the SINR of a channel measurement resource at an interference measurement resource, the energy of the channel measurement resource can be used as the numerator, and the energy of the interference measurement resource can be used as the denominator to complete the calculation of the SINR.

[0062] (5) Beam measurement, also known as beam management, can be used to measure the quality of the beam. For example, the RSRP or SINR of the beam can be measured. In the beam measurement, the beam corresponding to the resource can be uniquely identified by the index of the resource. The resource can be an uplink signal resource or a downlink signal resource.

[0063] First, the technical problems to be solved in the present application are analyzed and proposed. In the prior art, common methods for reducing co-frequency interference include optimization of networking architecture and optimization of radio frequency, such as the following method one and method two:

[0064] Method one: solve co-frequency interference by deploying different frequencies.

[0065] Method two: optimize the radio frequency of the interference source, for example, reduce the power of the interference source, or turn off the interference source.

[0066] The above method one has the following disadvantages:

[0067] More spectrum resources are occupied, and spectrum resources are insufficient. Deploying different frequencies means occupying more spectrum resources, but the spectrum resources available to each operator are limited, and there are not many spectrum resources to support different frequency deployment.

[0068] The above method two has the following disadvantages:

[0069] The scope of influence is wide, and the experience of more users is sacrificed. In the prior art, the optimization of the radio frequency of the interference source is mostly performed on a cell level, or even on a device level, that is, the power is reduced on a cell level, which affects the user experience of the entire cell, and turning off the interference source is performed on a device level, which will affect the experience of all users of the device. Such a way, although the experience of the interfered users is guaranteed, but the experience of more users is sacrificed, which is not worth the loss.

[0070] In order to solve the problems of reducing co-frequency interference in the prior art, without occupying more frequency resources, reducing the scope of influence, and minimizing the impact on the users of the interference source, the technical problems to be solved in the present application include the following aspects:

[0071] Precise beam-level interference reduction scheme (disadvantages of method one, disadvantages of method two). In a co-channel interference scenario, the interference source can determine the accurate interference direction based on the channel quality information of the terminal device, the interference source device (i.e., the first access network device), and the interfered device (i.e., the second access network device), and accurately reduce the interference to a specific beam direction. When the interference source device needs to schedule the terminal device in the beam direction, it can reduce the co-channel interference by reducing the power, beam avoidance, and staggered scheduling with the interfered device in the time-frequency domain. Compared with the prior art, the present application does not need to modify the network architecture and can still be deployed co-channel without occupying more spectrum resources. Compared with the prior art, the radio frequency optimization method is performed according to the cell level or even the device level. The present application can only optimize the specific beam direction causing interference, and can reduce the impact from the cell level or even the device level to the beam level. That is, among the users of the interference source, the users affected by the user experience are no longer the users of the entire cell or even all the users served by the entire device, but only the users in the beam direction causing interference.

[0072] In summary, the existing co-channel interference reduction scheme cannot meet the higher requirements of actual communication scenarios. Therefore, the interference coordination method provided by the present application is used to solve the above technical problems.

[0073] In order to better understand the interference coordination method provided by the embodiments of the present application, the system architecture and / or application scenario of the interference coordination method provided by the embodiments of the present application will be described below. It can be understood that the scenarios described in the embodiments of the present application are used to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application.

[0074] Referring to Figure 2 , Figure 2 is a communication system architecture diagram provided by an embodiment of the present application. The system architecture used by the interference coordination method provided by the embodiments of the present application can include one or more terminal devices and one or more access network devices. The access network device can transmit data or send control signaling to one or more terminal devices. The data transmission between the access network device and the terminal device can be transmitted and received through a beam.

[0075] In the embodiments of the present application, the access network device can be a kind of device deployed in a wireless access network to provide wireless communication function for terminal devices. The access network device can include various forms of macro base stations, micro base stations (also known as small stations), relay stations, access points, etc. In systems using different wireless access technologies, the name of the access network device can be different, for example, in a Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA) network, it is a Base Transceiver Station (BTS), in Wideband Code Division Multiple Access (WCDMA), it is a NB (NodeB), in Long Term Evolution (LTE), it is an eNB or eNodeB (Evolutional NodeB); the access network device can also be a wireless controller in a cloud radio access network (CRAN) scenario; the access network device can also be a base station device in a future 5G network or an access network device in a future evolved public land mobile network (PLMN); the access network device can also be a wearable device or a vehicle-mounted device. In the embodiments of the present application, the access network device can be an interference source and a victim device.

[0076] In the embodiments of the present application, the terminal device can be various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems with wireless communication functions. For example, the terminal device can be a mobile station (MS), a subscriber unit, a cellular phone, a smart phone, a wireless data card, a personal digital assistant (PDA) computer, a tablet computer, a wireless modem, a handset, a laptop computer, a machine type communication (MTC) terminal, etc. In the embodiments of the present application, the terminal device can be an interference source or a user in a victim device.

[0077] It should be noted that the embodiments of the present application can be applied to various communication systems, as long as there is an entity that needs to send information and another entity that needs to receive the information in the communication system. It can be understood that the communication system architecture or scenario in the above figure is only an exemplary embodiment in the embodiments of the present application, and the communication system architecture or scenario in the embodiments of the present application includes but is not limited to the above communication system architecture or scenario.

[0078] The following is based on Figure 2 The communication system architecture diagram is provided, and the technical problems proposed in the present application are specifically analyzed and solved.

[0079] Please refer to Figure 3 , Figure 3 is a flowchart of an interference coordination method provided by the embodiments of the present application. The method can be applied to the access network device and the terminal device described in the above Figure 2 , that is, the access network device and the terminal device can be used to support and execute the method flow steps S300-S302 shown in the above Figure 3 . The above interference coordination method will be described from the side of the interference source in the following, which can include the following steps S300-S302. Figure 3

[0080] Step S300: The interference source acquires channel quality information.

[0081] Specifically, the channel quality information includes one or more of channel quality information (i.e., first channel quality information) between one or more terminal devices and the interference source (i.e., the first access network device) and channel quality information (i.e., second channel quality information) between the one or more terminal devices and the interfered device (i.e., the second access network device); the first channel quality information and the second channel quality information include one or more of Sounding Reference Signal (SRS) measurement results, Channel state information Reference Signal (CSI-RS) measurement results, and Synchronization Signal Block (SSB) information. Understandably, the first channel quality information and the second channel quality information can also include Cell-specific Reference Signal (CRS) measurement results, UE-specific Reference Signal (UE RS) measurement results, and other information for characterizing channel quality, which are not limited in the embodiments of the present application.

[0082] ​It should be noted that the channel quality information obtained by the interference source can be included in a message sent by the interfered device, can be included in a message sent by one or more terminal devices, can be included in a message sent by a core network device, or can be obtained by the interference source through measurement.

[0083] It should also be noted that the purpose of the interference source (i.e., the first access network device) obtaining the channel quality information (i.e., the second channel quality information) between the terminal device and the interfered device (i.e., the second access network device) is to determine whether the communication of the terminal device is interfered. When it is determined through other means that the communication of the terminal device is interfered, the interference source can only obtain the channel quality information (i.e., the first channel quality information) between the terminal device and the interference source itself (i.e., the first access network device), so as to determine the specific interference direction. For example, the interfered device determines that the communication of the terminal device is interfered based on measurement, and sends the information of the terminal device to the interference source through a message. At this time, the interference source can obtain the channel quality information between the terminal device and the interference source based on measurement, and further determine the specific interference direction. In addition, the specific interference direction can be determined by the interfered device or the core network device, and then the interference source is informed through a message.

[0084] Step S301: The interference source determines the interference direction based on the channel quality information.

[0085] Specifically, the interference source (i.e., the first access network device) can determine the accurate interference direction according to one or more of the channel quality information between the one or more terminal devices and the interference source (i.e., the first access network device) and the channel quality information between the one or more terminal devices and the interfered device (i.e., the second access network device). For example, the specific beam causing interference can be determined according to the beam ID in the SRS measurement result or the beam ID in the CSI-RS measurement result, so as to determine the accurate interference direction. The specific beam causing interference can also be determined according to the SSB beam information obtained from the SSB information, and then the correspondence between the SSB beam and the user beam is determined, so as to determine the accurate interference direction, which is not limited here.

[0086] Step S302: The interference source performs a preset interference reduction operation when scheduling data for the terminal device in the interference direction.

[0087] Specifically, after determining the accurate interference direction, when the interference source needs to perform data scheduling on the terminal device in the interference direction, a preset interference reduction operation is performed. The preset interference reduction operation can be one or more of reducing power, beam steering based on beam domain zero forcing processing, and staggering scheduling in the time domain or frequency domain with the interfered device (i.e., the second access network device). That is, after the interference source determines the accurate interference direction, the interference reduction operation can be performed in the power domain, the space domain, the time domain, and the frequency domain, so as to achieve accurate interference control, reduce the influence range of the interference reduction, and protect the user experience of more users as much as possible.

[0088] For the convenience of understanding, the technical problems proposed in the present application will be analyzed and solved in detail through multiple embodiments (including embodiments 1-4) of the interference coordination method provided in the present application. The interaction between the access network device and the terminal device is described in conjunction with the accompanying drawings.

[0089] In embodiment 1, one or more terminal devices are users camping on the serving cell of the interfered device (i.e., the second access network device). The interference source (i.e., the first access network device) obtains channel quality information by performing SRS measurement on the one or more terminal devices and receiving messages of the interfered device. The channel quality information can include channel quality information between the one or more terminal devices and the interference source (i.e., the first access network device) and channel quality information between the one or more terminal devices and the interfered device (i.e., the second access network device). Please refer to Figure 4a , Figure 4a is a schematic diagram of an interference coordination method architecture provided by an embodiment of the present application, which can be applied to the communication system described in the above Figure 2 . For the specific interaction process between the access network device and the terminal device, please refer to Figure 4b , Figure 4b is a schematic diagram of an interference coordination method application process provided by an embodiment of the present application, including the following steps S400-S404:

[0090] Step S400: The interfered device determines one or more terminal devices.

[0091] Specifically, the interfered device determines one or more terminal devices from multiple terminal devices in the serving cell. The one or more terminal devices can be randomly selected by the interfered device, or can be determined by the interfered device according to the channel quality information between the multiple terminal devices and the interfered device itself. For example, when the SINR in the channel quality information between a terminal device and the interfered device reaches a preset threshold value, the interfered device can consider that the user experience of the terminal device is affected and needs to be improved, and then selects the terminal device.

[0092] In a possible implementation, the interfered device can determine one or more terminal devices from a plurality of terminal devices in the serving cell in real time, or can determine the one or more terminal devices in a certain period, and of course, the interfered device can also determine the one or more terminal devices according to its own load condition, and if the load of the interfered device reaches a certain threshold value, the interfered device can determine the one or more terminal devices and send a request for interference coordination to the interference source, such as when the number of users is greater than a certain preset value, or the uplink resource occupation rate or the downlink resource occupation rate is greater than a certain preset value. Understandably, when the load of the interfered device decreases to a certain extent, the interfered device can also send a request to stop interference coordination to the interference source, thereby reducing the complexity of the network.

[0093] Step S401: The interfered device sends SRS configuration information of the one or more terminal devices and channel quality information (i.e., second channel quality information) between the one or more terminal devices and the interfered device to the interference source.

[0094] Step S402: The interference source measures the one or more terminal devices based on the SRS configuration information to obtain channel quality information (i.e., first channel quality information) between the interference source and the one or more terminal devices.

[0095] It should be noted that the interference source can measure part or all of the one or more terminal devices, and specifically, after the interference source analyzes the channel quality information (i.e., second channel quality information) between the one or more terminal devices and the interfered device and determines the terminal devices whose communication is affected, the interference source can only measure the terminal devices whose communication is affected in the one or more terminal devices.

[0096] Step S403: The interference source determines the interference direction based on the above channel quality information.

[0097] Specifically, the interference source can first determine the specific one or several terminal devices whose communication is affected due to co-frequency interference according to the channel quality information (i.e., second channel quality information) between the one or more terminal devices and the interfered device, and then determine the specific interference direction according to the information related to the beam in the channel quality information (when the interference source only measures the terminal devices whose communication is affected, the channel quality information is the first channel quality information) between the terminal devices whose communication is affected and the interference source, such as the beam ID in the channel quality information, or the SSB ID in the channel quality information (because each SSB can correspond to a beam direction). See Figure 4c , Figure 4cis a same-frequency interference direction determination method provided by an embodiment of the present application. In the method, the interference source can use beams 1-4. Through measurement and analysis, it is found that beams 1 and 4 do not affect the one or more terminal devices (i.e., non-interference beams), while beams 2 and 3 affect some or all of the one or more terminal devices (i.e., interference beams).

[0098] In step S404, the interference source performs preset interference reduction operations when scheduling data for the terminal device in the interference direction. The preset interference reduction operations include one or more of reducing power, beam avoidance based on beam domain zero forcing, and staggering scheduling in the time domain or the frequency domain with the second access network device.

[0099] Specifically, after determining the specific interference direction, when the interference source needs to schedule data for the terminal device in the interference direction, the user experience of the user of the interfered device in the direction is ensured by reducing interference in the power domain, the spatial domain, the time domain, or the frequency domain, and only the communication quality of the user in the interference direction is affected among the users of the interference source, which is different from the case in the prior art in which the users of the entire cell or even all the users of the interference source are affected, thereby reducing the impact range and ensuring the user experience of more users of the interference source as much as possible while prioritizing the experience of the user of the interfered device. For ease of understanding, the following will be described by way of example of reducing interference by reducing power. Please refer to Figure 4d , Figure 4d is a same-frequency interference coordination implementation diagram provided by an embodiment of the present application. As in the above example, the interference source can use beams 1-4, beams 1 and 4 are non-interference beams, and beams 2 and 3 are interference beams. Therefore, when scheduling data for the users in the directions of beams 2 and 3, the interference source can reduce the transmit power of beams 2 and 3 to reduce the interference of beams 2 and 3 on the interfered device. As for the implementation of beam avoidance based on beam domain zero forcing, a statistical channel information H can be obtained when the interference source performs SRS measurement on the one or more terminal devices, and then beam domain zero forcing is performed based on the statistical channel information H. Staggering scheduling in the time domain or the frequency domain with the interfered device (i.e., the second access network device) can be understood as follows: the interference source and the interfered device cooperate when both of them need to schedule data for the users in the interference direction, and the interference source and the interfered device can reduce same-frequency interference by staggering scheduling in the time domain or the frequency domain.

[0100] In a possible implementation, whether the interference source performs interference coordination and executes preset interference reduction operation can be determined according to whether the interference source receives the interference coordination request from the interfered device, or can be determined according to the load of the interference source, or can be combined, for example, if the load of the interference source is lower than a certain threshold, the interference source can respond to the interference coordination request sent by the interfered device and execute preset interference reduction operation, for example, when the number of users of the interference source is lower than a certain preset value, or the uplink resource occupation rate or the downlink resource occupation is lower than a certain preset value, the interference coordination is performed. Understandably, when the load of the interference source is high, the interference coordination can also not be performed, or the interference coordination can be performed only for part of the multiple interference directions.

[0101] Based on the above method, when the interference source (that is, the first access network device) performs interference coordination and reduces the same-frequency interference on the interfered device (that is, the second access network device), the interference reduction operation can be performed only for the specific direction with interference, which is different from the interference reduction manner according to the cell level or the device level in the prior art, can reduce the interference, protect the user experience of the user of the interfered device, and at the same time, reduce the range of users of the interference source affected by the communication quality due to the interference reduction (that is, from the cell level or the device level to a certain interference direction), and as far as possible, reduce the influence on the users of the interference source, thereby improving the user experience of more users.

[0102] In the embodiment 2, the one or more terminal devices are users camping on the serving cell of the interfered device (that is, the second access network device), the interfered device performs measurement on the interference source by instructing the one or more terminal devices, and then switches the one or more terminal devices to the interference source according to the measurement result, and the interference source determines the specific interference direction through the information fed back by the one or more terminal devices, which can be referred to as Figure 4a ; and the specific interaction process of the access network device and the terminal device can be referred to as Figure 5 , Figure 5 is another application flow diagram of the interference coordination method provided by the embodiment of the application, including the following steps S500-S504:

[0103] Step S500: The interfered device determines one or more terminal devices.

[0104] Specifically, the interfered device determines one or more terminal devices from multiple terminal devices in the serving cell, wherein the one or more terminal devices can be determined randomly by the interfered device, or can be determined by the interfered device according to the channel quality information between the multiple terminal devices and the interfered device, which will not be described herein.

[0105] In a possible implementation, the interfered device can determine one or more terminal devices from a plurality of terminal devices in the serving cell in real time, or can determine the one or more terminal devices in a certain period, and of course, the interfered device can also determine the one or more terminal devices according to the load of the interfered device, and if the load of the interfered device reaches a certain threshold value, the interfered device can determine the one or more terminal devices and send a request for interference coordination to the interference source, such as when the number of users is greater than a certain preset value, or the uplink resource occupation rate or the downlink resource occupation rate is greater than a certain preset value. Understandably, when the load of the interfered device decreases to a certain extent, the interfered device can also send a request to stop interference coordination to the interference source, thereby reducing the complexity of the network.

[0106] Step S501: The one or more terminal devices measure the interference source.

[0107] Specifically, the measurement of the one or more terminal devices on the interference source can be a measurement on a cell-specific reference signal (CRS) or a UE-specific reference signal (UE RS) of the interference source, which is not limited here. The purpose of the measurement is to obtain the channel quality information between the one or more terminal devices and the interference source, which can be used as a basis for determining whether the one or more terminal devices are switched to the serving cell of the interference source. For example, the interfered device configures a measurement event for the one or more terminal devices, wherein the offset can be set to -15dB, the periodic reporting TimeToTriger is configured to 2560ms, and the time and amplitude hysteresis can be set with reference to the A3 event, and the absThreshSS-BlocksConsolidation information element is configured to -115dBm, and the includeBeamMeasurements information element is set to True.

[0108] Step S502: The interfered device receives the measurement result fed back by the one or more terminal devices, and when the measurement result meets the switching condition, switches the one or more terminal devices to the interference source.

[0109] Specifically, the switching condition can be that the SSB reference signal receiving power (RSRP) value of the interference source in the measurement result exceeds a preset threshold value, that is, when the SSB RSRP value of the interference source in the measurement result exceeds the preset threshold value, the interfered device switches the one or more terminal devices to the interference source. It should be noted that the measurement result that meets the switching condition can be part or all of the one or more terminal devices, and the interfered device can only switch the terminal devices that meet the switching condition to the interference source.

[0110] In a possible implementation, it can be understood that the one or more terminal devices are users of the interfered device, and the interfered device is aware of the channel quality information (i.e., the second channel quality information) between the one or more terminal devices and the interfered device by default. When the interfered device receives the measurement result of the one or more terminal devices on the interference source, the interfered device can obtain the channel quality information (i.e., the first channel quality information) between the one or more terminal devices and the interference source. In this case, the interfered device can actually determine the specific interference direction, and then inform the interference source of the interference direction by sending a message.

[0111] Step S503: The interference source performs resource admission on the one or more terminal devices, and determines the interference direction based on the information fed back by the one or more terminal devices.

[0112] Specifically, the interference source receives signaling sent by the interfered device for switching of the one or more terminal devices, and the signaling includes information of the one or more terminal devices. For example, the signaling can be an X2 message or an Xn message, and can also be an S1 message or an Sn message, which is not limited herein. After the interference source performs resource admission, the one or more terminal devices are switched from the serving cell of the interfered device to the serving cell of the interference source. The one or more terminal devices are switched to the interference source by means of random access, and the interference source can obtain the corresponding SSB ID according to the random access preamble when the one or more terminal devices perform random access, so as to determine the specific interference direction. In addition, the interference source can also determine the specific interference direction based on the CSI-RS beam information fed back by the one or more terminal devices.

[0113] Step S504: The interference source performs preset interference reduction operation when performing data scheduling on the terminal devices in the interference direction, and the preset interference reduction operation includes one or more of the following operations: reducing power, beam steering based on beam domain zero forcing processing, and staggering scheduling with the second access network device in time domain or frequency domain.

[0114] Specifically, after the interference source determines the specific interference direction, when the interference source needs to perform data scheduling on the terminal devices in the interference direction, the user experience of the users of the interfered device in the direction is guaranteed by means of reducing interference in the power domain, the spatial domain, the time domain, or the frequency domain. Among the users of the interference source, only the communication quality of the users in the interference direction is affected, which is different from the case in the prior art in which the users of the entire cell or even all the users of the entire interference source are affected, and the scope of influence is reduced. When the user experience of the users of the interfered device is prioritized, the user experience of more users of the interference source is also guaranteed as much as possible. For ease of understanding, the following will be exemplarily described by means of reducing interference by reducing power. Please refer to Figure 4dThe details are not described herein.

[0115] In a possible implementation, whether the interference source performs interference coordination and executes preset interference reduction operations can be determined according to whether the interference source receives an interference coordination request from the interfered device, or can be determined according to the load of the interference source, or can be combined and applied, for example, if the load of the interference source is lower than a certain threshold value, the interference source can respond to the interference coordination request sent by the interfered device and execute preset interference reduction operations, for example, when the number of users of the interference source is lower than a certain preset value, or the uplink resource occupation rate or the downlink resource occupation is lower than a certain preset value, the interference coordination is performed. Understandably, when the load of the interference source is high, the interference coordination can also not be performed, or the interference coordination can be performed only for part of the multiple interference directions.

[0116] Based on the above method, when the interference source (that is, the first access network device) performs interference coordination and reduces the same-frequency interference on the interfered device (that is, the second access network device), the interference reduction operation can be performed only for the specific direction with interference, which is different from the interference reduction manner according to the cell level or the device level in the prior art, can reduce the interference, protect the user experience of the users of the interfered device, and at the same time, reduce the range of users of the interference source affected by the communication quality due to the interference reduction (that is, from the cell level or the device level to a certain interference direction), and as far as possible, reduce the impact on the users of the interference source, thereby improving the user experience of more users.

[0117] In the embodiment 3, the one or more terminal devices are users camping on the serving cell of the interfered device (that is, the second access network device), the interfered device measures the interference source by using the one or more terminal devices, then determines the specific beam causing the interference according to the measurement result, sends the specific beam information to the interference source, and sends an interference coordination request, please refer to Figure 4a ; and the specific interaction process of the access network device and the terminal device can be refered to Figure 6 , Figure 6 is another application flow diagram of the interference coordination method provided by the embodiment of the present application, comprising the following steps S600-S604:

[0118] Step S600: The interfered device determines one or more terminal devices.

[0119] Specifically, the interfered device determines one or more terminal devices from the multiple terminal devices in the serving cell, wherein the one or more terminal devices can be randomly selected and determined by the interfered device, or can be determined by the interfered device according to the channel quality information between the multiple terminal devices and the interfered device, and the details are not described herein.

[0120] In a possible implementation, the interfered device can determine one or more terminal devices from a plurality of terminal devices in the serving cell in real time, or can determine the one or more terminal devices in a certain period, and of course, the interfered device can also determine the one or more terminal devices according to its own load condition, and if the load of the interfered device reaches a certain threshold value, the interfered device can determine the one or more terminal devices and send a request for interference coordination to the interference source, such as when the number of users is greater than a certain preset value, or the uplink resource occupation rate or the downlink resource occupation rate is greater than a certain preset value. Understandably, when the load of the interfered device decreases to a certain extent, the interfered device can also send a request to stop interference coordination to the interference source, thereby reducing the complexity of the network.

[0121] Step S601: The one or more terminal devices measure the interference source.

[0122] Specifically, the measurement of the one or more terminal devices on the interference source can be a measurement on the cell reference signal (CRS) and UE reference signal (UE RS) of the interference source, which is not specifically limited here. The purpose of the measurement is to obtain the channel quality information between the one or more terminal devices and the interference source, which can be used as a basis for determining whether the one or more terminal devices are switched to the serving cell of the interference source. For example, the interfered device configures a measurement event for the one or more terminal devices, wherein the offset can be set to -15dB, the periodical reporting TimeToTriger is configured to 2560ms, and the time and amplitude hysteresis can be set according to the A3 event, and the absThreshSS-BlocksConsolidation information element is configured to -115dBm, the includeBeamMeasurements information element is set to True, and the one or more terminal devices can report the SSB beam ID of the feedback neighbor cell (i.e., the serving cell of the interference source) when the measurement is completed.

[0123] Step S602: The interfered device receives the measurement result fed back by the one or more terminal devices, and sends a request for interference coordination to the interference source.

[0124] Specifically, the interference coordination request can include the beam ID of the adjacent cell and the expected coordination manner and coordination parameter. For example, the expected coordination manner can be to reduce power, and the coordination parameter can be the expected power value to be reduced. Understandably, the one or more terminal devices as users of the interfered device are by default known to the interfered device the channel quality information between the one or more terminal devices and the interfered device (i.e., the second channel quality information), and when the interfered device receives the measurement result of the one or more terminal devices on the interference source, the interfered device can obtain the channel quality information between the one or more terminal devices and the interference source (i.e., the first channel quality information). In this case, the interfered device can actually determine the specific interference direction (i.e., the SSB beam ID of the adjacent cell), and then inform the interference source of the interference direction by sending a message.

[0125] Step S603: The interference source receives the interference coordination request sent by the interfered device and determines the interference direction.

[0126] Specifically, after the interference source receives the interference coordination request sent by the interfered device, the specific interference direction and which users are in the interference direction can be determined based on the mapping relationship between the user beam and the SSB beam (for example, using AoA information).

[0127] Step S604: The interference source performs a preset interference reduction operation when scheduling data for the terminal devices in the interference direction, the preset interference reduction operation including one or more of reducing power, beam steering based on beam domain zero forcing processing, and staggering scheduling with the second access network device in the time domain or frequency domain.

[0128] Specifically, after the interference source determines the specific interference direction, when the interference source needs to schedule data for the terminal devices in the interference direction, the user experience of the users of the interfered device in the direction is guaranteed by reducing interference in the power domain, the spatial domain, the time domain, or the frequency domain. Among the users of the interference source, only the communication quality of the users in the interference direction is affected, which is different from the case in the prior art where the users of the entire cell or even all the users carried by the entire interference source are affected, thereby reducing the impact range and, while prioritizing the experience of the users of the interfered device, also trying to guarantee the user experience of more users of the interference source. For ease of understanding, the following will be illustrated by way of example of reducing interference by reducing power. Please refer to Figure 4d , which will not be repeated here.

[0129] In a possible implementation, whether the interference source performs interference coordination and executes preset interference reduction operations can be determined according to whether the interference source receives an interference coordination request from the interfered device, or can be determined by the interference source according to a load condition of the interference source, or can be combined and applied, for example, if the load of the interference source is lower than a certain threshold value, the interference source can respond to the interference coordination request sent by the interfered device to execute preset interference reduction operations, for example, when the number of users of the interference source is lower than a certain preset value, or the uplink resource occupation rate or the downlink resource occupation is lower than a certain preset value, the interference coordination is performed. Understandably, when the load of the interference source is high, the interference coordination can also not be performed, or the interference coordination can be performed only for part of the multiple interference directions.

[0130] Based on the above method, when the interference source (that is, the first access network device) performs interference coordination and reduces the same-frequency interference on the interfered device (that is, the second access network device), the interference reduction operation can be performed only for the specific direction with interference, which is different from the interference reduction manner according to the cell level or the device level in the prior art, can reduce the interference, protect the user experience of the user of the interfered device, and at the same time, reduce the range of users of the interference source affected by the communication quality due to the interference reduction (that is, from the cell level or the device level to a certain interference direction), and as far as possible, reduce the impact on the users of the interference source, thereby improving the user experience of more users.

[0131] In the embodiment 4, the one or more terminal devices are users camping on a serving cell of the interference source (that is, the first access network device), and the interference source determines the one or more terminal devices to perform measurement on the interfered device, and then determines the specific beam causing the interference according to the measurement result, so as to determine the specific interference direction, thereby performing the interference coordination when the user in the direction is scheduled with data. Please refer to Figure 7a , Figure 7a is another interference coordination method architecture provided by the embodiment of the present application, which can be applied to the communication system described in the above Figure 2 . For the specific interaction process of the access network device and the terminal device, please refer to Figure 7b , Figure 7b is another interference coordination method application process provided by the embodiment of the present application, which includes the following steps S700-S704.

[0132] Step S700: The interference source determines one or more terminal devices.

[0133] Specifically, the interference source determines one or more terminal devices from multiple terminal devices in a serving cell, wherein the one or more terminal devices can be determined by the interference source randomly, or can be determined by the interference source according to channel quality information between the multiple terminal devices and the interference source, which will not be described here.

[0134] In a possible implementation, the interference source can determine one or more terminal devices in real time from a plurality of terminal devices in the serving cell, or can determine them in a certain period, and of course the interference source can also be determined according to its own load condition. If the load of the interference source is lower than a certain threshold value, one or more terminal devices can be determined, such as when the number of users is lower than a certain preset value, or the uplink resource occupation rate or the downlink resource occupation rate is lower than a certain preset value. Understandably, when the load of the interference source is high to a certain extent, the determination of one or more terminal devices can also not be performed, so as to guarantee the experience of the users of the interference source.

[0135] Step S701: The one or more terminal devices perform measurement on the interfered device.

[0136] Specifically, the measurement of the one or more terminal devices on the interfered device can be measurement on a cell reference signal (CRS) or a UE reference signal (UE RS) of the interfered device, which is not limited here. The purpose of the measurement is to obtain channel quality information between the one or more terminal devices and the interfered device.

[0137] Step S702: The interference source receives the measurement result fed back by the one or more terminal devices, and determines whether the channel between the one or more terminal devices and the interfered device is affected by the co-frequency interference.

[0138] Specifically, when the measurement result fed back by the one or more terminal devices satisfies a preset condition, it can be determined that the channel between the one or more terminal devices and the interfered device is affected by the co-frequency interference, for example, when the SSB RSRP value of the interfered device in the measurement result exceeds a set threshold.

[0139] Step S703: When it is determined that the channel between the one or more terminal devices and the interfered device is affected by the co-frequency interference, the interference source determines the interference direction according to the information fed back by the one or more terminal devices.

[0140] Specifically, when it is determined that the channel between the one or more terminal devices and the interfered device is affected by the co-frequency interference, the interference source can determine the specific interference direction according to the CSI-RS beam information fed back by the terminal device.

[0141] Step S704: When the terminal devices in the interference direction are data scheduled, the interference source performs a preset interference reduction operation, and the preset interference reduction operation includes one or more of the following operations: reducing power, beam steering based on beam domain zero forcing processing, and staggering scheduling with the second access network device in the time domain or the frequency domain.

[0142] Specifically, after the interference source determines the specific interference direction, when the interference source needs to perform data scheduling on the terminal device in the interference direction, the user experience of the user of the interfered device in the direction is guaranteed by reducing the interference in the power domain, the space domain, the time domain or the frequency domain, and among the users of the interference source, only the communication quality of the user in the interference direction is affected, which is different from the case in the prior art that all users in the entire cell or even all users carried by the interference source are affected, the impact range is reduced, and the user experience of more users in the interference source is guaranteed as much as possible while the user experience of the interfered device is preferentially guaranteed. For ease of understanding, the following will be exemplarily described by taking the way of reducing the interference by reducing the power. Figure 4d Details are not described herein again.

[0143] In a possible implementation, whether the interference source performs interference coordination and executes the preset interference reduction operation can be determined according to whether the interference source receives the interference coordination request of the interfered device, or can be determined by the interference source according to the load of the interference source, or can be combined and applied, for example, if the load of the interference source is lower than a certain threshold value, the interference source can respond to the interference coordination request sent by the interfered device and execute the preset interference reduction operation, for example, when the number of users of the interference source is lower than a certain preset value, or the uplink resource occupation rate or the downlink resource occupation is lower than a certain preset value, the interference coordination is performed. Understandably, when the load of the interference source is high, the interference coordination can also not be performed, or the interference coordination can be performed only for part of the directions in the multiple interference directions.

[0144] Based on the above method, when the interference source (that is, the first access network device) performs interference coordination and reduces the same-frequency interference on the interfered device (that is, the second access network device), the interference reduction operation can be performed only for the specific direction in which the interference exists, which is different from the way of reducing the interference according to the cell level or the device level in the prior art, and the interference can be reduced to guarantee the user experience of the user of the interfered device, while the range of the users of the interference source whose communication quality is affected due to the reduction of the interference is reduced (that is, from the cell level or the device level to a certain interference direction), and the impact on the users of the interference source is reduced as much as possible, thereby improving the user experience of more users.

[0145] It should be noted that the method provided by the present application is not limited to the above embodiments, but can also be a combination or extension of the above embodiments. For example, in the above embodiment 4, one or more terminal devices in the interference source serving cell can be in a medium or near point and cannot measure the interfered device, but the data channel beam of the interference source can still interfere with the interfered device. Therefore, in such a scenario, embodiment 4 can be used in combination with embodiment 1, and then the interference source can determine the specific interference direction according to the channel quality information between the terminal device and itself and the channel quality information between the terminal device and the interfered device, so as to achieve the purpose of interference coordination in a specific direction.

[0146] In view of the actual technical problems to be solved proposed in the foregoing of the present application, the embodiments of the present application propose a method for reducing co-frequency interference, which can not occupy more frequency resources and only performs interference coordination in a specific interference direction, to solve the problems of occupying more frequency resources and affecting a wide range in the prior art. Specifically, the interference source (i.e., the first access network device) obtains channel quality information, wherein the channel quality information can include one or more of channel quality information between one or more terminal devices and the interference source (i.e., the first access network device) (i.e., the first channel quality information) and channel quality information between the one or more terminal devices and the interfered device (i.e., the second access network device) (i.e., the second channel quality information), and the channel quality information can be obtained by receiving a message of a terminal device, a message of an interfered device (i.e., the second access network device), or a message of a core network device; then, the specific interference direction is determined by the channel quality information, wherein the interference source determines the specific interference direction can be based on the channel quality information between the one or more terminal devices and the interference source (i.e., the first access network device) (i.e., the first channel quality information) and the channel quality information between the one or more terminal devices and the interfered device (i.e., the second access network device) (i.e., the second channel quality information) to determine that the one or more terminal devices are affected by co-frequency interference, and then according to the beam used by the interference source when interacting with the one or more terminal devices, the specific beam direction is known, so that the specific interference direction is clear. Of course, the determination of the specific interference direction can also be determined by the interfered device and then notified to the interference source (such as embodiment 3); finally, the interference source performs a reduction interference operation when scheduling users in the interference direction, to realize interference coordination.

[0147] Therefore, when the interference coordination method provided by the present application is applied to communication in a communication system, the problems of occupying more frequency resources caused by deploying different frequencies in the traditional co-frequency interference reduction scheme and the problem of affecting a wide range caused by reducing power according to the cell level or even the device level can be solved.

[0148] In conclusion, the present application overcomes the shortcomings in the prior art, reduces the influence range of a cell level or even a device level to a certain direction (i.e. a beam level) by reducing co-frequency interference in the accurate interference direction, thereby guaranteeing the user experience of more users as much as possible, without the need for deploying different frequencies, and without occupying more frequency resources.

[0149] The above describes the method of the embodiments of the present application in detail, and the following provides two related devices of the embodiments of the present application.

[0150] Please refer to Figure 8 , Figure 8 is a structural schematic diagram of an access network device provided by the embodiments of the present application. The access network device 8 can include an acquisition unit 81, a determination unit 82, a processing unit 83, and can further include a receiving unit 84, and the detailed description of each unit is as follows:

[0151] The acquisition unit 81 is configured to acquire channel quality information, wherein the channel quality information includes one or more of first channel quality information between one or more terminal devices and the first access network device and second channel quality information between the one or more terminal devices and a second access network device; the first channel quality information and the second channel quality information include one or more of sounding reference signal (SRS) measurement results, channel state information reference signal (CSI-RS) measurement results, and synchronization signal block (SSB) information;

[0152] The determination unit 82 is configured to determine an interference direction based on the channel quality information.

[0153] The processing unit 83 is configured to perform a preset interference reduction operation when data scheduling is performed on a terminal device in the interference direction, wherein the preset interference reduction operation includes one or more of reducing power, beam steering based on beam domain zero forcing processing, and staggering scheduling with the second access network device in the time domain or the frequency domain.

[0154] In a possible implementation, the one or more terminal devices are users camping on a serving cell of the second access network device; and the channel quality information includes the first channel quality information and the second channel quality information.

[0155] The acquisition unit 81 is specifically configured to:

[0156] receive the second channel quality information and sounding reference signal (SRS) configuration information of the one or more terminal devices sent by the second access network device;

[0157] measure the one or more terminal devices based on the SRS configuration information to obtain the first channel quality information.

[0158] In a possible implementation, the one or more terminal devices are users currently camping on a serving cell of the second access network device, and measurement results of the one or more terminal devices on the first access network device satisfy a first preset threshold value; and the channel quality information includes first channel quality information.

[0159] The obtaining unit 81 is specifically configured to:

[0160] perform resource admission on the one or more terminal devices handed over from the second access network device, and obtain the first channel quality information fed back by the one or more terminal devices.

[0161] In a possible implementation, the one or more terminal devices are users camping on a serving cell of the second access network device, and measurement results of the one or more terminal devices on the first access network device satisfy a first preset threshold value; and the channel quality information includes first channel quality information.

[0162] The obtaining unit 81 is specifically configured to:

[0163] receive the first channel quality information sent by the second access network device, the first channel quality information being obtained by the one or more terminal devices measuring the first access network device.

[0164] In a possible implementation, the one or more terminal devices are users camping on a serving cell of the first access network device, and the channel quality information includes first channel quality information and second channel quality information.

[0165] The obtaining unit 81 is specifically configured to:

[0166] receive the first channel quality information and the second channel quality information fed back by the one or more terminal devices, the first channel quality information being obtained by the one or more terminal devices measuring the first access network device, and the second channel quality information being obtained by the one or more terminal devices measuring the second access network device.

[0167] In a possible implementation, the processing unit 83 is specifically configured to:

[0168] perform the preset interference reduction operation when a load of the first access network device is lower than a first preset condition, the first preset condition including one or more of the following conditions: a number of users of the first access network device is lower than a first preset value, a resource occupation rate of the first access network device is lower than a second preset value; and the resource occupation rate includes one or more of an uplink resource occupation rate and a downlink resource occupation rate.

[0169] In a possible implementation, the access network device 8 further includes a receiving unit 84, configured to receive the interference coordination request sent by the second access network device, where the interference coordination request is used to request the first access network device to perform the preset interference reduction operation.

[0170] Please refer to Figure 9 , Figure 9 is another structural diagram of an access network device provided by the embodiment of the present application. The access network device 9 can include a sending unit 91, and the detailed description of each unit is as follows:

[0171] The sending unit 91 is configured to send a first message to the first access network device, where the first message includes one or more of SRS configuration information of one or more terminal devices, first channel quality information and second channel quality information; the first channel quality information is channel quality information between the one or more terminal devices and the first access network device, and the second channel quality information is channel quality information between the one or more terminal devices and the second access network device.

[0172] In a possible implementation, the sending unit 91 is further configured to:

[0173] send an interference coordination request to the first access network device;

[0174] or send an interference coordination request to the first access network device when a load of the second access network device reaches a second preset condition; the second preset condition includes one or more of the following conditions: a number of users of the second access network device is greater than a third preset value, a resource occupation rate of the second access network device is greater than a fourth preset value; where the resource occupation rate includes one or more of an uplink resource occupation rate and a downlink resource occupation rate.

[0175] It should be noted that the functions of each functional unit in the access network device 8 and the access network device 9 described in the embodiment of the present application can refer to the related description in the method embodiment, which will not be repeated here.

[0176] As a possible product form, the core network device, the access network device or the terminal device described in the embodiment of the present application can be realized by a general bus architecture.

[0177] For ease of illustration, please refer to Figure 10 , Figure 10 is a structural diagram of a communication apparatus 1000 provided by the embodiment of the present application. The communication apparatus 1000 can be an access network device or a terminal device, or a chip therein. Figure 10Only the main components of the communication device 1000 are shown. In addition to the processor 1001 and the transceiver 1002, the communication device can further comprise a memory 1003, and an input output device (not shown in the figure). Figure 10

[0178] The processor 1001 is mainly used for processing communication protocols and communication data, and controlling the whole communication device, executing software programs, and processing data of the software programs. The memory 1003 is mainly used for storing software programs and data. The transceiver 1002 can comprise a control circuit and an antenna, the control circuit is mainly used for converting baseband signals and radio frequency signals, and processing radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. The input output device, such as touch screen, display screen, keyboard, etc., is mainly used for receiving user input data and outputting data to the user.

[0179] When the communication device is powered on, the processor 1001 can read the software program in the memory 1003, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be transmitted wirelessly, the processor 1001 performs baseband processing on the data to be transmitted, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit converts the baseband signal into a radio frequency signal, and transmits the radio frequency signal in the form of electromagnetic waves through the antenna. When data is transmitted to the communication device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1001. The processor 1001 converts the baseband signal into data and processes the data.

[0180] In another implementation, the radio frequency circuit and the antenna can be arranged independently of the processor performing baseband processing, for example, in a distributed scenario, the radio frequency circuit and the antenna can be arranged remotely from the communication device.

[0181] The processor 1001, the transceiver 1002, and the memory 1003 can be connected through a communication bus.

[0182] In one design, the communication device 1000 can be configured to perform the functions of the interference coordination method in the foregoing method embodiments: the processor 1001 can be configured to generate Figure 4b messages transmitted in each step of the foregoing method embodiments, and / or other processes described herein; the transceiver 1002 can be configured to transmit and receive Figure 4b messages in each step of the foregoing method embodiments, and / or other processes described herein.

[0183] In one design, the communication device 1000 can be configured to perform the functions of the interference coordination method in the foregoing method embodiments: the processor 1001 can be configured to generate Figure 5 ​messages sent by each of the steps, and / or other processes for the techniques described herein; the transceiver 1002 can be configured to receive and transmit Figure 5 messages of each of the steps, and / or other processes for the techniques described herein.

[0184] In one design, the communication device 1000 can be configured to perform the functions of the interference coordination method in the preceding method embodiments: the processor 1001 can be configured to generate Figure 6 messages sent by each of the steps, and / or other processes for the techniques described herein; the transceiver 1002 can be configured to receive and transmit Figure 6 messages of each of the steps, and / or other processes for the techniques described herein.

[0185] In one design, the communication device 1000 can be configured to perform the functions of the interference coordination method in the preceding method embodiments: the processor 1001 can be configured to generate Figure 7b messages sent by each of the steps, and / or other processes for the techniques described herein; the transceiver 1002 can be configured to receive and transmit Figure 7b messages of each of the steps, and / or other processes for the techniques described herein.

[0186] In any of the above designs, the processor 1001 can include a transceiver for implementing the receiving and transmitting functions. For example, the transceiver can be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions can be separate, or can be integrated together. The above transceiver circuit, interface, or interface circuit can be used for code / data reading and writing, or the above transceiver circuit, interface, or interface circuit can be used for signal transmission or transfer.

[0187] In any of the above designs, the processor 1001 can store instructions, which can be a computer program, the computer program running on the processor 1001 can cause the communication device 1000 to perform the method described in any of the above method embodiments. The computer program can be fixed in the processor 1001, in which case the processor 1001 can be implemented by hardware.

[0188] In an implementation, the communication apparatus 1000 can include circuitry that can implement the functions of transmitting or receiving or communicating in the aforementioned method embodiments. The processor and transceiver described in the present application can be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit (RFIC), a mixed-signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), positive channel metal oxide semiconductor (PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0189] The scope of the communication apparatus described in the present application is not limited thereto, and the structure of the communication apparatus can not be limited by Figure 10 The communication apparatus can be a standalone device or can be a part of a larger device. For example, the communication apparatus can be:

[0190] (1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem;

[0191] (2) a set of one or more ICs, optionally including a storage component for storing data, computer programs, etc.

[0192] (3) an ASIC, such as a modem;

[0193] (4) a module that can be embedded in other devices;

[0194] (5) a receiver, a terminal, a smart terminal, a cellular phone, a wireless device, a handset, a mobile unit, a car device, a network device, a cloud device, an artificial intelligence device, etc.

[0195] (6) other, etc.

[0196] As a possible product form, the network device or terminal device described in the embodiments of the present application can be implemented by a general-purpose processor.

[0197] A general-purpose processor that implements the interference coordination method includes a processing circuit and an input / output interface that is internally connected and communicates with the processing circuit.

[0198] In one design, a general-purpose processor can be used to execute the function of the interference coordination method in the aforementioned method embodiments: the processing circuit can be used to generate Figure 4b The various messages sent in each step of the process, and / or other procedures used to perform the techniques described herein; the input / output interface can be used to send and receive messages. Figure 4b The messages at each step in the process, and / or other processes used in the techniques described herein.

[0199] In one design, a general-purpose processor can be used to execute the function of the interference coordination method in the aforementioned method embodiments: the processing circuit can be used to generate Figure 5 The various messages sent in each step of the process, and / or other procedures used to perform the techniques described herein; the input / output interface can be used to send and receive messages. Figure 5 The messages at each step in the process, and / or other processes used in the techniques described herein.

[0200] In one design, a general-purpose processor can be used to execute the function of the interference coordination method in the aforementioned method embodiments: the processing circuit can be used to generate Figure 6 The various messages sent in each step of the process, and / or other procedures used to perform the techniques described herein; the input / output interface can be used to send and receive messages. Figure 6 The messages at each step in the process, and / or other processes used in the techniques described herein.

[0201] In one design, a general-purpose processor can be used to execute the function of the interference coordination method in the aforementioned method embodiments: the processing circuit can be used to generate Figure 7b The various messages sent in each step of the process, and / or other procedures used to perform the techniques described herein; the input / output interface can be used to send and receive messages. Figure 7b The messages at each step in the process, and / or other processes used in the techniques described herein.

[0202] It should be understood that the communication devices of the various product forms described above have any of the functions of the interference coordination method in the above method embodiments, which will not be elaborated here.

[0203] This application also provides a computer-readable storage medium storing computer program code. When the processor executes the computer program code, the electronic device performs the method in any of the foregoing embodiments.

[0204] The embodiment of the present application further provides a communication device, which can exist in the form of a chip product, and the device comprises a processor and an interface circuit, the processor is used for communicating with other devices through the receiving circuit, so that the device executes the method in any of the foregoing embodiments.

[0205] The embodiment of the present application further provides a wireless communication system, which comprises one or more of network devices and terminal devices, and can execute the method in any of the foregoing embodiments.

[0206] The embodiment of the present application further provides a computer program product, which, when running on a computer, causes the computer to execute the method in any of the foregoing embodiments.

[0207] In the foregoing embodiments, the description of each embodiment focuses on different aspects, and the parts not described in detail in an embodiment can be referred to the related description of other embodiments.

[0208] It should be noted that, for the foregoing method embodiments, in order to simply describe, each is described as a series of action combinations, but those skilled in the art should know that the present application is not limited to the order of the actions described, because according to the present application, some steps can be performed in other order or at the same time. Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily essential to the present application.

[0209] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic. The division of the above units is only a logical function division. There can be another division manner in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the units can be indirect couplings or communication connections through some interfaces, devices or units, and can be electrical or other forms.

[0210] The units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. According to actual needs, some or all of the units can be selected to achieve the purpose of the embodiment of the present application.

[0211] In addition, each of the functional units in each of the embodiments of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0212] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application, essentially or in part, or all or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc., and specifically can be a processor in the computer device) to perform all or part of the steps of the methods according to the embodiments of the present application. The foregoing storage medium can include: U disk, mobile hard disk, magnetic disk, optical disk, read-only memory (ROM) or random access memory (RAM), and various other media capable of storing program codes.

[0213] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some of the technical features; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of interference coordination, the method comprising: The method is applied to a first access network device, and the method comprises: obtaining channel quality information, wherein the channel quality information comprises first channel quality information between one or more terminal devices and the first access network device and second channel quality information between the one or more terminal devices and a second access network device; the first channel quality information and the second channel quality information comprise one or more of a sounding reference signal (SRS) measurement result, a channel state information reference signal (CSI-RS) measurement result and synchronization signal block (SSB) information; the first access network device is an interference device, and the second access network device is an interfered device; determining, based on the second channel quality information, a terminal device that exists interference from the one or more terminal devices, and determining an interference direction based on the terminal device that exists interference and the first channel quality information; when performing data scheduling on the terminal device in the interference direction, performing a preset interference reduction operation, wherein the preset interference reduction operation comprises one or more of reducing power, beam steering based on beam domain zero forcing processing and staggering scheduling with the second access network device in a time domain or a frequency domain.

2. The method of claim 1, wherein, The one or more terminal devices are users camping on a serving cell of the second access network device; the channel quality information comprises the first channel quality information and the second channel quality information; The obtaining of the channel quality information comprises: receiving the second channel quality information and sounding reference signal (SRS) configuration information of the one or more terminal devices sent by the second access network device; performing measurement on the one or more terminal devices based on the SRS configuration information to obtain the first channel quality information.

3. The method of claim 1, wherein, The one or more terminal devices are users currently camping on a serving cell of the second access network device, and measurement results of the one or more terminal devices on the first access network device satisfy a first preset threshold value; the channel quality information comprises first channel quality information; The obtaining of the channel quality information comprises: performing resource admission on the one or more terminal devices that are switched from the second access network device to obtain the first channel quality information fed back by the one or more terminal devices.

4. The method of claim 1, wherein, The one or more terminal devices are users camping on a serving cell of the second access network device; measurement results of the one or more terminal devices on the first access network device satisfy a first preset threshold value; the channel quality information comprises first channel quality information; The obtaining of the channel quality information comprises: receiving the first channel quality information sent by the second access network device, wherein the first channel quality information is obtained by the one or more terminal devices measuring the first access network device.

5. The method of claim 1, wherein, The one or more terminal devices are users camping on a serving cell of the first access network device; the channel quality information comprises first channel quality information and second channel quality information; The obtaining of the channel quality information comprises: receive the first channel quality information and the second channel quality information fed back by the one or more terminal devices, the first channel quality information being measured by the one or more terminal devices on the first access network device, and the second channel quality information being measured by the one or more terminal devices on the second access network device.

6. The method of any one of claims 1-5, wherein, The performing the preset interference reduction operation comprises: when the load of the first access network device is lower than a first preset condition, performing the preset interference reduction operation; the first preset condition comprises one or more of the following conditions: the number of users of the first access network device is lower than a first preset value, and the resource occupation rate of the first access network device is lower than a second preset value; wherein the resource occupation rate comprises one or more of uplink resource occupation rate and downlink resource occupation rate.

7. The method of any one of claims 1-5, wherein, The method further comprises: receiving an interference coordination request sent by the second access network device, the interference coordination request being used to request the first access network device to perform the preset interference reduction operation.

8. An interference coordination apparatus, characterized by, The apparatus applied to the first access network device comprises: an obtaining unit, configured to obtain channel quality information, the channel quality information comprising first channel quality information between one or more terminal devices and the first access network device and second channel quality information between the one or more terminal devices and a second access network device; the first channel quality information and the second channel quality information comprising one or more of sounding reference signal (SRS) measurement result, channel state information reference signal (CSI-RS) measurement result, and synchronization signal block (SSB) information; the first access network device being an interference device, and the second access network device being a victim device; a determining unit, configured to determine, based on the second channel quality information, a terminal device existing interference from the one or more terminal devices, and determine, based on the terminal device existing interference and the first channel quality information, an interference direction; a processing unit, configured to, when performing data scheduling on a terminal device in the interference direction, perform a preset interference reduction operation, the preset interference reduction operation comprising one or more of reducing power, beam steering based on beam domain zero forcing processing, and staggering scheduling with the second access network device in time domain or frequency domain.

9. The apparatus of claim 8, wherein, The one or more terminal devices are users camping on a serving cell of the second access network device; the channel quality information comprises the first channel quality information and the second channel quality information. The obtaining unit is specifically configured to: receive the second channel quality information and sounding reference signal (SRS) configuration information of the one or more terminal devices sent by the second access network device; measure the one or more terminal devices based on the SRS configuration information to obtain the first channel quality information.

10. The apparatus of claim 8, wherein, The one or more terminal devices are users currently camping on a serving cell of the second access network device, and measurement results of the one or more terminal devices on the first access network device satisfy a first preset threshold value; the channel quality information comprises first channel quality information. The obtaining unit is specifically configured to: Admitting the one or more terminal devices switched from the second access network device to resources, and obtaining the first channel quality information fed back by the one or more terminal devices.

11. The apparatus of claim 8, wherein, The one or more terminal devices are users camping on a serving cell of the second access network device; measurement results of the one or more terminal devices on the first access network device satisfy a first preset threshold; and the channel quality information comprises first channel quality information. The obtaining unit is specifically configured to: Receive the first channel quality information sent by the second access network device, the first channel quality information being obtained by the one or more terminal devices measuring the first access network device.

12. The apparatus of claim 8, wherein, The one or more terminal devices are users camping on a serving cell of the first access network device; and the channel quality information comprises first channel quality information and second channel quality information. The obtaining unit is specifically configured to: Receive the first channel quality information and the second channel quality information fed back by the one or more terminal devices, the first channel quality information being obtained by the one or more terminal devices measuring the first access network device, and the second channel quality information being obtained by the one or more terminal devices measuring the second access network device.

13. The apparatus of any one of claims 8-12, wherein, The processing unit is specifically configured to: When the load of the first access network device is lower than a first preset condition, perform the preset interference reduction operation; the first preset condition comprises one or more of the following conditions: the number of users of the first access network device is lower than a first preset value, and the resource occupation rate of the first access network device is lower than a second preset value; wherein the resource occupation rate comprises one or more of uplink resource occupation rate and downlink resource occupation rate.

14. The apparatus of any one of claims 8-12, wherein, The apparatus further comprises: A receiving unit configured to receive an interference coordination request sent by the second access network device, the interference coordination request being used to request the first access network device to perform the preset interference reduction operation.

15. A communications device, characterized by A communication device comprising a processor and a memory, wherein the memory is configured to store program code, and the program code is configured to be executed by the processor, and the communication device is configured to implement the method according to any one of claims 1-7.

16. A communication system, characterized by A communication system comprising one or more terminal devices and one or more first access network devices, wherein the one or more terminal devices and the one or more first access network devices are communicatively connected, and the one or more first access network devices are configured to implement the method according to any one of claims 1-7.

17. The communication system of claim 16 wherein, The communication system further comprises a second access network device, and the second access network device is configured to send a first message to the first access network device, the first message comprising one or more of SRS configuration information of the one or more terminal devices, the first channel quality information, and the second channel quality information.

18. The communication system of claim 17 wherein, The second access network device is further configured to send an interference coordination request to the first access network device; Or when the load of the second access network device reaches a second preset condition, send an interference coordination request to the first access network device; The second preset condition comprises one or more of the following conditions: a number of users of the second access network device is greater than a third preset value, a resource occupation rate of the second access network device is greater than a fourth preset value; wherein the resource occupation rate comprises one or more of an uplink resource occupation rate and a downlink resource occupation rate.

19. A computer-readable storage medium, characterized in that, comprising instructions which, when executed on a computer, cause the computer to carry out the method of any one of claims 1-7.

20. A chip system comprising a processor for supporting a device to implement the functionality involved in any one of the preceding claims 1-7.

21. A computer program product, characterised in that, The computer program comprises instructions which, when the computer program is executed by a computer, cause the computer to carry out the method of any one of claims 1-7.

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