WO2020164402A1

WO2020164402A1 - Communication method and communication device

Info

Publication number: WO2020164402A1
Application number: PCT/CN2020/074221
Authority: WO
Inventors: 郝金平; 晋英豪; 杨水根; 张宏卓
Original assignee: 华为技术有限公司
Priority date: 2019-02-15
Filing date: 2020-02-03
Publication date: 2020-08-20
Also published as: CN111586723B; CN111586723A

Abstract

The present application provides a communication method and a communication device, intended to solve the problem of remote interference. Said method comprises: a first network device acquiring information about reference signals from N second network devices, N being an integer greater than or equal to 1, the N second network devices performing remote interference on an interfered network device group, and the information about the reference signals including identification information about the interfered network device group; and on the basis of the information about the reference signals of the N second network devices, the first network device sending, to M second network devices among the N second network devices, information for indicating interference elimination to be performed, M being an integer greater than or equal to 1, and M being less than or equal to N.

Description

Communication method and communication device

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910117846.6, and the application name is "communication method and communication device" on February 15, 2019, the entire content of which is incorporated into this application by reference.

Technical field

The present application relates to the field of communication, and more specifically, to a communication method and communication device.

Background technique

Under special atmospheric conditions, electromagnetic waves can propagate in the atmosphere by super-refraction, just like propagating forward in a waveguide. This is called an atmospheric duct phenomenon. Due to the atmospheric duct phenomenon, network equipment in a certain area may be interfered by signals from network equipment in a certain area that are far away. This interference can be called long-range interference.

For example, in some scenarios, such as a time division duplex (TDD) scenario or a new radio (NR) scenario, the downlink signal of the network device in the area A propagates to the area B which is far away due to the atmospheric duct phenomenon. When the downlink signal of network equipment in area A reaches area B after long-distance transmission delay, area B may be undergoing uplink transmission. At this time, the signal in area A will cause interference to area B, which will affect the network equipment in area B. Communication performance.

How to solve this long-range interference problem has become a problem that needs to be solved urgently.

Summary of the invention

This application provides a communication method and communication device in order to solve the problem of remote interference.

In a first aspect, a communication method is provided, including: a first network device obtains reference signal information from N second network devices, where N is an integer greater than or equal to 1, and the reference signal information includes the interfered The identification information of the network device group; based on the information of the reference signal of the N second network devices, the first network device sends information for indicating interference cancellation to M second network devices among the N second network devices, Wherein, M is an integer greater than or equal to 1, and M is less than or equal to N.

Based on the above technical solution, the first network device selects one or more network devices from the N second network devices to perform interference cancellation based on the information of the reference signal reported by the N second network devices, so that interference cancellation, reduction or Eliminating the interference to the interfered network device group can also minimize the impact on the communication performance at the N second network devices.

Conversely, if N second network devices learn that they have interfered with the interfered network device group and directly perform interference cancellation, then all N second network devices perform interference cancellation, which greatly affects the performance of N second network devices. Communication performance.

Therefore, through the negotiation of the first network device, that is, based on the reported reference signal information, one or more network devices are selected from the N second network devices for interference cancellation, which can reduce or eliminate the interference while also guaranteeing Communication performance at N second network devices.

Optionally, the interfered network device group may specifically be one or more network devices.

Optionally, the N second network devices perform remote interference on the interfered network device group.

Optionally, the information of the reference signal includes the identification information of the interfered network device group, that is, the information of the reference signal of the N second network devices includes the identification information of the interfered network device group, and the N second network The identification information of the interfered network device group contained in the information of the reference signal of the device may be the same or different.

With reference to the first aspect, in some implementations of the first aspect, the reference signal information of the N second network devices includes the same identification information of the interfered network device group, and the reference signal information includes the reference signal strength , The reference signal strength of M second network devices exceeds the first threshold; or, the reference signal strength of M second network devices is greater than or equal to the reference signal strength of (NM) second network devices, (NM) The second network device is different from the network devices in the M second network devices.

Based on the above technical solution, the first network device may select the main interference source to perform interference cancellation, for example, select a network device with a larger reference signal strength to perform interference cancellation.

Optionally, the first threshold may be preset, for example, pre-defined by the protocol, or pre-configured by the network device; or, may also be dynamically set according to actual conditions, such as the average value of multiple reference signal strengths; or, It may also be estimated based on historical conditions, which is not limited in the embodiment of the present application.

With reference to the first aspect, in some implementations of the first aspect, the information of the reference signal of the N second network devices contains the same identification information of the interfered network device group, and the information of the reference signal includes information about the interference intensity or Information on the intensity of remote interference, the interference intensity of M second network devices or the intensity of M second network devices receiving remote interference exceeds the second threshold; or, the interference intensity of M second network devices is greater than or equal to (NM ) The interference intensity of the second network device, or the intensity of the remote interference of the M second network device is greater than or equal to the intensity of the remote interference of the (NM) second network device, (NM) the second network device It is different from the network equipment in the M second network equipment.

Based on the foregoing technical solution, the first network device may select the main interference source to perform interference cancellation, for example, select a network device with a greater interference intensity to perform interference cancellation.

Optionally, the second threshold may be preset, for example, pre-defined by the protocol, or pre-configured by the network device; or, it may be dynamically set according to actual conditions, such as the average value of multiple interference intensities or multiple The average value of the intensity of the remote interference; or, it may be estimated based on historical conditions, which is not limited in the embodiment of the present application.

Optionally, the interference strength may be the interference strength calculated by the second network device based on the reference signal.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the first network device sends query information, and the query information is used to query the interference status of the interfered network device group.

Optionally, the interfered state, in other words, whether the interference is eliminated, or whether the interference still exists, or in other words, whether the remote interference is eliminated or whether the remote interference still exists. Whether the interference is eliminated can indicate whether the interference is completely eliminated; or, it can also indicate whether the interference intensity exceeds a preset threshold; or, it can also indicate whether the interference intensity is reduced; or, it can also indicate whether the degree of interference reduction exceeds a preset value, etc. . Wherein, the preset threshold may be a predetermined threshold, for example, a threshold predetermined by a protocol or a threshold preconfigured by a network device, which is not limited.

Correspondingly, the interference has been eliminated, in other words the remote interference has been eliminated, it can mean that the interference has been completely eliminated, or it can mean that the interference intensity has not exceeded the preset threshold, or it can mean that the interference intensity has been reduced, or it can mean The degree of interference intensity reduction exceeds a preset value and so on. The interference is not eliminated, in other words, the remote interference is not eliminated, which can mean that the interference is not completely eliminated, or it can mean that the interference intensity exceeds a preset threshold, or it can mean that the interference intensity has not changed or the interference intensity has increased, or it can also mean The degree of interference intensity decline does not exceed a preset value, etc.

With reference to the first aspect, in some implementation manners of the first aspect, the method further includes: the first network device receives response information for the query information.

Optionally, the response information includes information that the interfered state is an interference-uncancelled state, or the response information includes that the interfered state is an interference-cancelled state.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the first network device receives a notification message, where the notification message is used to notify the interfered network device group that the interference state of the interfered network device group is the eliminated state or the uneliminated state status.

With reference to the first aspect, in some implementations of the first aspect, the information of the reference signal of the N second network devices contains the same identification information of the interfered network device group, and when the first network device is within the preset time period When the information indicating that the interfered state of the interfered network device group is the eliminated state is not received, the method further includes: the first network device sends to T second network devices of the (NM) second network devices A message used to instruct interference cancellation, the (NM) second network device is different from the network devices in the M second network devices, where T is an integer greater than or equal to 1, and T is less than or equal to (NM).

Based on the above technical solution, it is possible to obtain information indicating that the interference state of the interfered network device group is the eliminated state within a preset period of time, and when it is determined that the interference is not eliminated, the remaining network devices (for example, Denoted as (NM) second network device) select one or more network devices for interference cancellation, thereby improving the efficiency of interference cancellation.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the first network device receives, within a preset time period, information indicating that the interference state of the interfered network device group is the eliminated state .

Based on the foregoing technical solution, the first network device may determine whether the interference is eliminated according to whether the interference state of the interfered network device group is the eliminated state is received within a preset time period. For example, if information indicating that the interference state of the interfered network device group is the canceled state is received within a preset period of time, it is determined that the interference is eliminated; another example is that no information indicating that the interference is received is received within the preset period of time. If the interference state of the network device group is the eliminated state, it is determined that the interference is not eliminated. Therefore, not only can it be accurately confirmed whether the interference is eliminated, but also the signaling overhead can be saved.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the first network device receives remote interference strength information from the interfered network device group; the first network device determines the interfered person according to the remote interference strength information The interfered state of the network device group.

Optionally, the remote interference strength information of the interfered network device group, that is, the remote interference strength received by the interfered network device group, may be an IoT value, or may also be other remote interference strength information.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: when the first network device receives remote interference intensity information from the interfered network device group, the first network device determines the interfered network The interfered state of the device group is not eliminated.

Based on the above solution, the first network device can determine whether the interference is eliminated according to whether the remote interference intensity information of the interfered network device group is received.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: when the interfered state of the interfered network device group is in the non-eliminated state, the first network device sends the (NM) second network device The T second network devices in the send a message for instructing interference cancellation, the (NM) second network device is different from the network devices in the M second network devices, where T is an integer greater than or equal to 1, And T is less than or equal to (NM).

Based on the above technical solution, when the first network device determines that the interference is not eliminated, it can select one or more network devices from the remaining network devices (for example, denoted as (NM) second network device) for interference cancellation, thereby improving the interference Elimination efficiency.

Optionally, the interfered state is the un-cancelled state. In other words, the remote interference is not eliminated, which can mean that the interference is not completely eliminated, or it can mean that the interference intensity exceeds a preset threshold, or it can mean that the interference intensity has not changed or the interference The intensity increases, or, it can also mean that the degree of interference intensity does not exceed a preset value, and so on.

Optionally, when determining that the interfered state is the non-eliminated state, it can be determined through a response message, that is, the response message carries the information that the interfered state is the uneliminated state; or, it can also be determined through a notification message, that is, in the notification message. Carry the information that the interfered state is the non-cancelled state; or, it can also be determined by not receiving the interference-cancelled information within a preset time period, etc., which is not limited.

With reference to the first aspect, in some implementations of the first aspect, the first network device is one or more centralized units of the access network device, and the second network device is a distributed unit of the access network device; or, The first network device is a core network device or a network management device, and the second network device is a base station; or, the first network device is one or more of N second network devices, and the second network device is a base station.

In a second aspect, a communication method is provided, including: a second network device sends information about a reference signal to a first network device, where the information about the reference signal includes identification information of the interfered network device group; and the second network device obtains information from the first network device. A network device determines indication information based on the information of the reference signal, where the indication information is used to instruct the second network device to perform interference cancellation; based on the indication information, the second network device performs interference cancellation.

Based on the above technical solution, the second network device performs interference cancellation after receiving the instruction information. In other words, the second network device does not perform interference cancellation if it does not receive the instruction information. The first network device can select some network devices from the multiple second network devices to perform interference cancellation based on the information of the reference signal reported by the multiple second network devices, so that interference cancellation can be performed, and the interference to the network device can be reduced or eliminated. Group interference can also minimize the impact on the communication performance of the second network device.

Conversely, if the second network device learns that it has interfered with the interfered network device group and directly performs interference cancellation, the communication performance at the second network device will be greatly affected.

Therefore, the interference cancellation is performed through the instruction of the first network device, which can reduce or eliminate the interference while ensuring the communication performance at the second network device.

Optionally, the second network device remotely interferes with the interfered network device group.

With reference to the second aspect, in some implementations of the second aspect, the information of the reference signal includes at least one of the following: information about the strength of the reference signal, information about the interference strength, or information about the strength of the remote interference.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second network device sends an inquiry message, and the inquiry message is used to inquire whether the interference to the interfered network device group is eliminated.

With reference to the second aspect, in some implementation manners of the second aspect, the method further includes: the second network device receives response information for the query information.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second network device receives the reference signal, and resolves the interference status of the interfered network device group from the reference signal.

With reference to the second aspect, in some implementations of the second aspect, when the interference state of the interfered network device group is the eliminated state, the method further includes: the second network device sends notification information to the first network device, The notification information is used to notify the first network device that the interfered state of the interfered network device group is the eliminated state.

With reference to the second aspect, in some implementation manners of the second aspect, when the interfered state of the interfered network device group is the non-eliminated state, the method further includes: the second network device sends notification information to the first network device, The notification information is used to notify the first network device that the interfered state of the interfered network device group is the non-eliminated state.

Optionally, the second network device sends notification information to the first network device, or it can also be understood that the second network device sends request information requesting interference cancellation to the first network device, which is not limited in this application.

With reference to the second aspect, in some implementations of the second aspect, when the first network device does not receive the information indicating that the interference state of the interfered network device group is the eliminated state within the preset time period, The method further includes: the second network device sends notification information to the first network device, where the notification information is used to notify the first network device that the interfered state of the interfered network device group is the non-eliminated state.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second network device receives, within a preset time period, information indicating that the interference state of the interfered network device group is the eliminated state .

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second network device receives remote interference strength information from the interfered network device group; the second network device determines the interfered person according to the remote interference strength information The interfered state of the network device group.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: when the second network device receives remote interference intensity information from the interfered network device group, the second network device determines the interfered network The interfered state of the device group is not eliminated.

Based on the foregoing solution, the second network device can determine whether the interference is eliminated according to whether the remote interference intensity information of the interfered network device group is received.

With reference to the second aspect, in some implementations of the second aspect, the first network device is one or more centralized units of the access network device, and the second network device is a distributed unit of the access network device; or, The first network device is a core network device or a network management device, and the second network device is a base station; or, the first network device is a base station, and the second network device is a base station.

In a third aspect, a communication method is provided, including: a second network device receives a first reference signal; when the first condition is met, the second network device performs interference cancellation.

Based on the above technical solution, after the second network device obtains the reference signal (for example, recorded as the first reference signal), it determines whether to perform interference cancellation according to whether a certain condition (for example, recorded as the first condition) is satisfied. For example, when this condition is met, interference cancellation is performed; when this condition is not met, interference cancellation is not performed. Therefore, interference cancellation can be performed to reduce or eliminate the interference to the interfered network device group, and the impact on the communication performance of the second network device can be minimized.

Therefore, the second network device determines whether to perform interference cancellation based on the acquired first reference signal and the first condition, which can reduce or eliminate the interference while ensuring the communication performance at the second network device.

With reference to the third aspect, in some implementation manners of the third aspect, the first condition is: the first reference signal strength exceeds the first threshold.

Based on the above technical solution, the second network device may decide whether to perform interference cancellation according to the reference signal strength (for example, recorded as the first reference signal strength) and the first threshold. For example, when the strength of the reference signal exceeds the first threshold, interference cancellation is performed; when the strength of the reference signal does not exceed the first threshold, interference cancellation is not performed. Therefore, by referring to network devices with relatively large signal strength to perform interference cancellation, the main interference source can perform interference cancellation, thereby improving the efficiency of interference cancellation.

With reference to the third aspect, in some implementation manners of the third aspect, the method further includes: the second network device obtains the first threshold value from the first network device.

Based on the foregoing technical solution, the first threshold may be sent by the first network device to the second network device.

With reference to the third aspect, in some implementations of the third aspect, the first condition is: the first interference intensity exceeds the second threshold, or the intensity of the remote interference exceeds the second threshold.

Optionally, the first interference intensity may be determined based on the first reference signal, or the first interference intensity may also be detected remote interference.

Based on the above technical solution, the second network device can decide whether to perform interference cancellation according to the interference intensity (for example, recorded as the first interference intensity) and the second threshold. For example, when the intensity of interference or the intensity of remote interference exceeds the second threshold, interference cancellation is performed; when the intensity of interference or the intensity of remote interference does not exceed the second threshold, interference cancellation is not performed. Therefore, by using network equipment with relatively large interference intensity to perform interference cancellation, the main interference source can perform interference cancellation, thereby improving the efficiency of interference cancellation.

With reference to the third aspect, in some implementation manners of the third aspect, the method further includes: the second network device obtains the second threshold value from the first network device.

Based on the foregoing technical solution, the second threshold may be sent by the first network device to the second network device.

With reference to the third aspect, in some implementations of the third aspect, the method further includes: the second network device sends inquiry information, and the inquiry information is used to inquire about the interference status of the interfered network device group.

Optionally, the interfered state includes whether the interference is eliminated, or whether the interference still exists, or in other words, whether the remote interference is eliminated or whether the remote interference still exists. Whether the interference is eliminated may indicate whether the interference is completely eliminated; or, it may also indicate whether the interference intensity exceeds a preset threshold; or, it may also indicate whether the interference intensity is reduced, and so on. Wherein, the preset threshold may be a predetermined threshold, for example, a threshold predetermined by a protocol or a threshold preconfigured by a network device, which is not limited.

With reference to the third aspect, in some implementation manners of the third aspect, the method further includes: the second network device receives response information for the query information.

With reference to the third aspect, in some implementations of the third aspect, the method further includes: the second network device receives, within a preset time period, information indicating that the interference state of the interfered network device group is the eliminated state .

Based on the foregoing technical solution, the second network device can determine whether the interference is eliminated according to whether the interference state of the interfered network device group is the eliminated state is received within a preset time period. For example, if information indicating that the interference state of the interfered network device group is the canceled state is received within a preset period of time, it is determined that the interference is eliminated; another example is that no information indicating that the interference is received is received within the preset period of time. If the interference state of the network device group is the eliminated state, it is determined that the interference is not eliminated. Therefore, not only can it be accurately confirmed whether the interference is eliminated, but also the signaling overhead can be saved.

With reference to the third aspect, in some implementation manners of the third aspect, the method further includes: when the second network device does not receive within a preset time period indicating that the interfered state of the interfered network device group is the eliminated state And when the second condition is met, the second network device performs interference cancellation.

Based on the above technical solution, when the information indicating that the interference state of the interfered network device group is the eliminated state is not received within the preset time period, the second network device can determine that the interference is not eliminated, and the second network device According to the information of the first reference signal and the second condition, it can be judged again whether to perform interference cancellation. For example, when the second network device determines not to perform interference cancellation according to the information of the first reference signal and the first condition, then when it is determined that the interference is not eliminated, the second network device further determines whether to cancel the interference according to the information of the first reference signal and the second condition. Perform interference cancellation.

With reference to the third aspect, in some implementations of the third aspect, the method further includes: the second network device receives remote interference strength information from the interfered network device group; the second network device determines the interfered person according to the remote interference strength information The interfered state of the network device group.

With reference to the third aspect, in some implementations of the third aspect, the method further includes: when the second network device receives remote interference intensity information from the interfered network device group, the second network device determines the interfered network The interfered state of the device group is not eliminated.

With reference to the third aspect, in some implementations of the third aspect, the method further includes: when the interfered state of the interfered network device group is in the non-eliminated state, and when the second condition is met, the second network device performs Interference elimination.

Based on the foregoing technical solution, when the second network device determines that the interference is not eliminated, the second network device may again determine whether to perform interference cancellation based on the information of the first reference signal and the second condition. For example, when the second network device determines not to perform interference cancellation according to the information of the first reference signal and the first condition, then when it is determined that the interference is not eliminated, the second network device further determines whether to cancel the interference according to the information of the first reference signal and the second condition. Perform interference cancellation.

With reference to the third aspect, in some implementations of the third aspect, the second condition is: the first reference signal strength exceeds the third threshold, and the third threshold is less than the first threshold; or, the second condition is: the first interference strength The fourth threshold is exceeded, or the intensity of the remote interference exceeds the fourth threshold, and the fourth threshold is less than the second threshold.

Based on the above technical solution, the third threshold is smaller than the first threshold, and the fourth threshold is smaller than the second threshold, thereby improving the efficiency of interference cancellation.

Optionally, the first threshold, the second threshold, the third threshold, and the fourth threshold are all allocated for the first reference signal. For example, the first threshold, the second threshold, and the third threshold can be allocated for the first reference signal in advance. , The fourth threshold; alternatively, the first threshold and the second threshold may be allocated to the first reference signal first, and when it is determined that the interference is not eliminated, the third threshold and the fourth threshold are then allocated to the first reference signal.

With reference to the third aspect, in some implementation manners of the third aspect, the method further includes: the second network device obtains the third threshold or the fourth threshold from the first network device.

Based on the foregoing technical solution, the third threshold or the fourth threshold may be sent by the first network device to the second network device.

With reference to the third aspect, in some implementation manners of the third aspect, the method further includes: when the second network device does not receive within a preset time period indicating that the interfered state of the interfered network device group is the eliminated state When the third condition is met, the second network device performs interference cancellation.

Based on the above technical solution, when the information indicating that the interference state of the interfered network device group is the canceled state is not received within a preset period of time, it can be determined that the interference is not canceled, and the second network device may be based on the received The second reference signal and the third condition are used to determine whether to perform interference cancellation. Optionally, the second reference signal and the first reference signal may be the same or different, which is not limited.

With reference to the third aspect, in some implementations of the third aspect, the method further includes: when the interfered state of the interfered network device group is an uncancelled state, the second network device receives the second reference signal; Under three conditions, the second network device performs interference cancellation.

With reference to the third aspect, in some implementations of the third aspect, the third condition is: the second reference signal strength exceeds the fifth threshold, and the fifth threshold is less than the first threshold; or, the third condition is: the second interference strength The sixth threshold is exceeded, or the intensity of the remote interference exceeds the sixth threshold, and the sixth threshold is less than the second threshold.

Based on the above technical solution, the fifth threshold is smaller than the first threshold, and the sixth threshold is smaller than the second threshold, thereby improving the efficiency of interference cancellation.

Optionally, the second interference intensity may be determined based on the second reference signal, or the second interference intensity may also be detected remote interference.

Optionally, the first threshold and the second threshold are allocated for the first reference signal. For example, the first threshold and the second threshold can be allocated for the first reference signal in advance; when it is determined that the interference is not eliminated, the second reference signal Assign the fifth and sixth thresholds.

With reference to the third aspect, in some implementation manners of the third aspect, the method further includes: the second network device obtains the fifth threshold or the sixth threshold from the first network device.

Based on the foregoing technical solution, the fifth threshold or the sixth threshold may be sent by the first network device to the second network device.

With reference to the third aspect, in some implementations of the third aspect, the first network device is one or more centralized units of the access network device, and the second network device is a distributed unit of the access network device; or, The first network device is a core network device or a network management device, and the second network device is a base station; or, the first network device is a base station, and the second network device is a base station.

In a fourth aspect, a communication method is provided, including: a first network device obtains information about a first reference signal from N second network devices, where N is an integer greater than or equal to 1, and the value of the first reference signal The information includes the identification information of the interfered network device group; based on the information of the first reference signal of the N second network devices, the first network device sends the first information indicating the first condition to the N second network devices, The first condition is used for N second network devices to determine whether to perform interference cancellation.

Based on the above technical solution, the first network device can send information indicating the first condition for the N second network devices based on the information of the reference signal reported by the N second network devices, so that the N second network devices can According to the information of the reference signal and the first condition, it is determined whether to perform interference cancellation. For example, when the first condition is met, interference cancellation is performed; when the first condition is not met, interference cancellation is not performed. Therefore, interference cancellation can be performed to reduce or eliminate the interference to the interfered network device group, and the impact on the communication performance of the N second network devices can also be minimized.

Conversely, if the N second network devices learn that they have interfered with the interfered network device group and directly perform interference cancellation, the communication performance at the N second network devices will be greatly affected.

Therefore, by instructing the first condition to the N second network devices, the N second network devices can determine whether to perform interference cancellation through the acquired first reference signal and the first condition, which can reduce or eliminate the interference at the same time , Can also guarantee the communication performance at the second network device.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the first information includes a first threshold; the first condition is: the strength of the first reference signal exceeds the first threshold.

Based on the above technical solution, the first network device can send the first threshold to the N second network devices, so that the N second network devices can use the reference signal strength (for example, denoted as the first reference signal strength) and the first threshold value. Decide whether to perform interference cancellation. For example, when the strength of the reference signal exceeds the first threshold, interference cancellation is performed; when the strength of the reference signal does not exceed the first threshold, interference cancellation is not performed. Therefore, by referring to network devices with relatively large signal strength to perform interference cancellation, the main interference source can perform interference cancellation, thereby improving the efficiency of interference cancellation.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first information includes a second threshold; the first condition is: the first interference intensity exceeds the second threshold, or the intensity of remote interference exceeds the second threshold.

Based on the above technical solution, the first network device can send the second threshold to the N second network devices, so that the N second network devices can exceed the total interference intensity (for example, the first interference intensity) or the intensity of the remote interference. The second threshold and the second threshold are used to determine whether to perform interference cancellation. For example, when the interference intensity exceeds the second threshold, interference cancellation is performed; when the interference intensity does not exceed the second threshold, interference cancellation is not performed. Therefore, by using network equipment with relatively large interference intensity to perform interference cancellation, the main interference source can perform interference cancellation, thereby improving the efficiency of interference cancellation.

Optionally, the interference strength (for example, recorded as the first interference strength) may be the interference strength calculated by the second network device based on the reference signal.

With reference to the fourth aspect, in some implementations of the fourth aspect, the method further includes: the first network device sends inquiry information, and the inquiry information is used to inquire about the interference status of the interfered network device group.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the method further includes: the first network device receives response information for the inquiry information.

With reference to the fourth aspect, in some implementations of the fourth aspect, the method further includes: the first network device receives notification information, and the notification information is used to notify that the interference state of the interfered network device group is the non-eliminated state or The interference has been eliminated.

With reference to the fourth aspect, in some implementations of the fourth aspect, the method further includes: the first network device receives, within a preset time period, information indicating that the interference state of the interfered network device group is the eliminated state .

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the method further includes: when the first network device does not receive within a preset time period indicating that the interfered state of the interfered network device group is the eliminated state When the first network device sends the second information indicating the second condition to the N second network devices, the second condition is used by the N second network devices to determine whether to perform interference cancellation.

Based on the above technical solution, when the information indicating that the interference state of the interfered network device group is the eliminated state is not received within the preset time period, the first network device may determine that the interference is not eliminated, and the first network device The second condition may be sent to the N second network devices, so that the N second network devices determine whether to perform interference cancellation according to the information of the first reference signal and the second condition.

With reference to the fourth aspect, in some implementations of the fourth aspect, the method further includes: the first network device receives remote interference strength information from the interfered network device group; the first network device determines the interfered person according to the remote interference strength information The interfered state of the network device group.

With reference to the fourth aspect, in some implementations of the fourth aspect, the method further includes: when the first network device receives remote interference intensity information from the interfered network device group, the first network device determines the interfered network The interfered state of the device group is not eliminated.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the method further includes: when the interfered state of the interfered network device group is in the non-eliminated state, the first network device sends the data to the N second network devices. For the second information indicating the second condition, the second condition is used for N second network devices to determine whether to perform interference cancellation.

Based on the above technical solution, when the first network device determines that the interference is not eliminated, it can send the second condition to the N second network devices, so that the N second network devices determine whether to proceed according to the information of the first reference signal and the second condition. Interference elimination.

With reference to the fourth aspect, in some implementations of the fourth aspect, the second information includes a third threshold, and the second condition is: the first reference signal strength exceeds the third threshold, and the third threshold is less than the first threshold; or, The second information includes a fourth threshold, and the second condition is that the first interference intensity or the intensity of remote interference exceeds the fourth threshold, and the fourth threshold is less than the second threshold.

Based on the above technical solution, the third threshold is less than the first threshold, and the fourth threshold is less than the second threshold. That is, when the first network device determines that the interference is not eliminated, the first network device may send a third threshold that is less than the first threshold and a fourth threshold that is less than the second threshold to N second network devices, so that N second network devices The network device may determine whether to perform interference cancellation according to the first reference signal strength and the third threshold, or the N second network devices may determine whether to perform interference cancellation according to the first interference strength or the strength of remote interference received and the fourth threshold.

With reference to the fourth aspect, in some implementations of the fourth aspect, when the first network device does not receive the information indicating that the interference state of the interfered network device group is the eliminated state within the preset time period, The method further includes: the first network device obtains the information of the second reference signal from the N second network devices; based on the information of the second reference signal of the N second network devices, the first network device sends the information to the N second network devices Send third information for indicating a third condition, where the third condition is used by N second network devices to determine whether to perform interference cancellation.

Based on the above technical solution, when the information indicating that the interference state of the interfered network device group is the eliminated state is not received within the preset time period, the first network device may determine that the interference is not eliminated, and the first network device The third condition may be determined based on the received second reference information, so that the second network device may determine whether to perform interference cancellation based on the received second reference signal and the third condition. Optionally, the second reference signal and the first reference signal may be the same or different, which is not limited.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the method further includes: when the interfered state of the interfered network device group is the non-cancelled state, the method further includes: the first network device obtains information from the Nth 2. Information of the second reference signal of the network device; based on the information of the second reference signal of the N second network devices, the first network device sends third information indicating the third condition to the N second network devices, The three conditions are used for N second network devices to determine whether to perform interference cancellation.

Based on the above technical solution, when the interference is not eliminated, the first network device can determine the third condition based on the received second reference information, so that the second network device can determine whether to use the received second reference signal and the third condition. Perform interference cancellation. Optionally, the second reference signal and the first reference signal may be the same or different, which is not limited.

With reference to the fourth aspect, in some implementations of the fourth aspect, the third information includes a fifth threshold, and the third condition is: the second reference signal strength exceeds the fifth threshold, and the fifth threshold is less than the first threshold; or, The third information includes a sixth threshold, and the third condition is: the second interference intensity or the intensity of remote interference exceeds the sixth threshold, and the sixth threshold is less than the second threshold.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first network device is one or more centralized units of the access network device, and the second network device is a distributed unit of the access network device; or, The first network device is a core network device or a network management device, and the second network device is a base station; or, the first network device is one or more of N second network devices, and the second network device is a base station.

In a fifth aspect, a communication device is provided. The device is a centralized unit and has the method function of the first aspect or the fourth aspect. These functions can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In a sixth aspect, a communication device is provided, the device is a core network device and has the method function of the first aspect or the fourth aspect. These functions can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In a seventh aspect, a communication device is provided. The device is a network management device and has the function of implementing the method of the first aspect or the fourth aspect. These functions can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In an eighth aspect, a communication device is provided, the device is a base station, and has the method function of the foregoing first aspect or fourth aspect. These functions can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In a ninth aspect, a communication device is provided. The device is a distributed unit and has the method function of the second or third aspect. These functions can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In a tenth aspect, a communication device is provided. The device is a base station and has the method function of the second aspect or the third aspect. These functions can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In an eleventh aspect, a communication device is provided. The device is a centralized unit. The device includes a memory, a communication interface, and a processor. The memory is used to store computer programs or instructions, and the processor is coupled to the memory and the communication interface. When the processor executes the computer program or instruction, the device executes the method of the first aspect or the fourth aspect.

In a twelfth aspect, a communication device is provided. The device is a core network device. The device includes a memory, a communication interface, and a processor, where the memory is used to store computer programs or instructions, and the processor is coupled to the memory and the communication interface. When the processor executes the computer program or instruction, the device executes the method of the first aspect or the fourth aspect.

In a thirteenth aspect, a communication device is provided. The device is a network management device. The device includes a memory, a communication interface, and a processor. The memory is used to store computer programs or instructions, and the processor is coupled to the memory and the communication interface. When the processor executes the computer program or instruction, the device executes the method of the first aspect or the fourth aspect.

In a fourteenth aspect, a communication device is provided. The device is a base station. The device includes a memory, a communication interface, and a processor. The memory is used to store computer programs or instructions. The processor is coupled with the memory and the communication interface. When the processor executes the computer program or instruction, the device executes the method of the first aspect or the fourth aspect.

In a fifteenth aspect, a communication device is provided. The device is a distributed unit. The device includes a memory, a communication interface, and a processor. The memory is used to store computer programs or instructions, and the processor is coupled to the memory and the communication interface. When the processor executes the computer program or instruction, the device executes the method of the second aspect or the third aspect.

According to a sixteenth aspect, a communication device is provided, which is a base station, and includes a memory, a communication interface, and a processor. The memory is used to store computer programs or instructions. The processor is coupled with the memory and the communication interface. When the processor executes the computer program or instruction, the device executes the method of the second aspect or the third aspect.

In a seventeenth aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code runs on a computer, the computer executes the method of the first aspect or the fourth aspect.

In an eighteenth aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code runs on a computer, the computer executes the method of the second aspect or the third aspect.

In a nineteenth aspect, a computer-readable storage medium is provided, the computer-readable storage medium stores a computer program, and when the computer program is executed, the method of the first aspect or the fourth aspect is implemented.

In a twentieth aspect, a computer-readable storage medium is provided, the computer-readable storage medium stores a computer program, and when the computer program is executed, the method of the second aspect or the third aspect described above is implemented.

Description of the drawings

FIG. 1 is a schematic diagram of an application scenario applicable to an embodiment of the present application;

FIG. 2 is a schematic diagram of another application scenario applicable to an embodiment of the present application;

FIG. 3 is a schematic diagram of another application scenario applicable to an embodiment of the present application;

Figure 4 is a schematic flow chart of remote interference management;

FIG. 5 is a schematic interaction diagram of a communication method according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a communication method applicable to an embodiment of the present application;

FIG. 7 is a schematic interaction diagram of a communication method according to another embodiment of the present application;

FIG. 8 is a schematic interaction diagram of a communication method according to another embodiment of the present application;

FIG. 9 is a schematic interaction diagram of a communication method according to still another embodiment of the present application;

FIG. 10 is a schematic block diagram of a communication device according to an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a communication device according to an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a communication device according to another embodiment of the present application;

FIG. 13 is a schematic structural diagram of a communication device according to another embodiment of the present application;

FIG. 14 is a schematic structural diagram of a communication device according to still another embodiment of the present application.

detailed description

The technical solution in this application will be described below in conjunction with the drawings.

The technical solutions of the embodiments of this application can be applied to various communication systems, for example: the fifth generation (5G) system, new radio (NR), global system for mobile communications (GSM) system , Code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (long term evolution) , LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), global interconnected microwave access ( worldwide interoperability for microwave access, WiMAX) communication systems, etc.

Fig. 1 is a schematic diagram of an application scenario suitable for an embodiment of the present application. As shown in FIG. 1, the terminal 130 accesses a wireless network to obtain services from an external network (such as the Internet) through the wireless network, or communicate with other terminals through the wireless network. The wireless network includes a RAN110 and a core network (CN) 120. The RAN110 is used to connect the terminal 130 to the wireless network, and the CN120 is used to manage the terminal and provide a gateway for communication with the external network.

Among them, the terminal, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc., is a device that provides voice/data connectivity to users. For example, handheld devices with wireless connectivity, or vehicle-mounted devices. At present, some examples of terminals are: mobile phones (mobile phones), tablets, notebook computers, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, and augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid) The wireless terminal in the transportation safety (transportation safety), the wireless terminal in the smart city (smart city), or the wireless terminal in the smart home (smart home), etc., or it can be the terminal equipment in the 5G network Or terminal equipment in a public land mobile network (PLMN) that will evolve in the future, which is not limited in the embodiment of the present application.

Among them, the network device is a device in a wireless network, for example, a radio access network (RAN) node that connects a terminal to the wireless network. At present, some examples of RAN nodes are: gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (RNC), Node B (Node B) B, NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit) , BBU), or wireless fidelity (Wifi) access point (AP), etc. In a network structure, a network device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node.

Fig. 2 is a schematic diagram of another application scenario applicable to an embodiment of the present application.

Access and mobility management function (AMF) entities: mainly used for mobility management and access management, etc., and can be used to implement mobility management entity (mobility management entity, MME) functions except for session management Other functions, such as lawful interception, or access authorization (or authentication) functions.

As shown in Figure 2, gNB1 can be connected to AMF1 through a first communication interface, and gNB2 can be connected to AMF2 through a second communication interface. Optionally, the first communication interface and the second communication interface may be denoted by NG. The present application does not limit the representation mode of the first communication interface and the second communication interface, and the foregoing communication interface may also adopt other expression modes. Optionally, gNB1 and gNB2 can be connected to the same AMF or different AMFs. For example, gNB1 and gNB2 can belong to different manufacturers and correspond to different AMFs.

The AMF in Fig. 2 can also be replaced with operation administration and maintenance (OAM). gNB1 can be connected to OAM through the first communication interface, and gNB2 can be connected to OAM through the second communication interface. Optionally, the first communication interface may be represented by OM1, and the second communication interface may be represented by OM2. The present application does not limit the representation mode of the first communication interface and the second communication interface, and the foregoing communication interface may also adopt other expression modes. Optionally, gNB1 and gNB2 can be connected to the same OAM or different OAMs. For example, gNB1 and gNB2 may belong to different manufacturers, and correspond to different OAMs.

It should be understood that the foregoing AMF entity may be understood as a network element used to implement the foregoing functions in the core network, and it may be an independent device or integrated in the same device to implement the foregoing functions, which is not limited in this application.

It should also be understood that the aforementioned interface name is only an example, and the name of the interface in a specific implementation may be other names, and this application does not specifically limit this.

It should also be understood that the first network device in the embodiment of the present application may correspond to the foregoing AMF or OAM, and the second network device may correspond to the foregoing gNB1 and gNB2.

Fig. 3 is a schematic diagram of another application scenario suitable for an embodiment of the present application.

CU and DU are connected through a communication interface. In the embodiment of the present application, the communication interface between the CU and the DU may be referred to as an F1 interface. In other words, the F1 interface is used to connect between the CU and the DU. One CU can be connected to one or more DUs. In other words, multiple DUs can be centrally controlled by one CU. Or, in a specific implementation, considering the stability of the system, one DU may also be connected to multiple CUs. It should be understood that the interface name shown in FIG. 3 is only an example, and the name of the interface in a specific implementation may be other names, and this application does not specifically limit this.

The CU has radio resource control (radio resource control, RRC) or part of the RRC control function, including all the protocol layer functions or part of the protocol layer functions of the existing base station; for example, it only includes the RRC function or part of the RRC function, or includes the RRC function or service Data adaptation protocol (service data adaptation protocol, SDAP) layer functions, or include RRC/packet data convergence protocol (packet data convergence protocol, PDCP) layer functions, or include RRC/PDCP and part of the radio link layer control protocol (radio link) Control, RLC) layer functions; or include the RRC/PDCP/media access control (MAC) layer, or even part or all of the physical layer PHY functions, and other possibilities are not excluded.

The DU has all the protocol layer functions of the existing base station except the protocol layer functions of the CU, that is, part of the protocol layer function units of RRC/SDAP/PDCP/RLC/MAC/PHY, such as part of the RRC function and PDCP/RLC/ Protocol layer functions such as MAC/PHY, or protocol layer functions such as PDCP/RLC/MAC/PHY, or protocol layer functions such as RLC/MAC/PHY, or part of RLC/MAC/PHY functions, or only all or part of PHY Function; It should be noted that the functions of each protocol layer mentioned here may change, and they are all within the protection scope of this application. For example, DU has all the protocol layer functions of existing base stations.

For example, the functions of the PDCP and above protocol layers are set in the CU, and the functions of the protocol layers below PDCP, such as RLC and MAC, are set in the DU. Of course, this type of protocol layer division is just an example, it can also be divided in other protocol layers, for example, in the RLC layer, the functions of the RLC layer and above protocol layers are set in the CU, and the functions of the protocol layers below the RLC layer are set in DU. Or, in a certain protocol layer, for example, part of the functions of the RLC layer and the functions of the protocol layer above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layer below the RLC layer are set in the DU. In addition, it can also be divided in other ways, for example, by time delay, and functions that need to meet the delay requirement for processing time are set in the DU, and functions that do not need to meet the delay requirement are set in the CU. In addition, the radio frequency device can be remote, not placed in the DU, can also be integrated in the DU, or part of the remote part is integrated in the DU, and there is no restriction here.

For another example, in 5G networks, new types of relay nodes also have new technological developments. For example, relay nodes are only deployed with layer 2 (e.g., including radio link control (resource link control, RLC) layer, MAC layer, etc.) And the protocol stack architecture of layer 1 (for example, including the PHY layer), but not all protocol stack functions above layer 2, such as all RRC layer functions. Therefore, the data or signaling generated by the donor base station needs to be forwarded by the relay node to the terminal device.

It should be understood that the first network device in the embodiment of the present application may correspond to the CU in the CU-DU architecture, or may correspond to the above-mentioned donor base station, and the second network device may correspond to the DU in the CU-DU architecture, or may correspond to In the above-mentioned relay node.

It should also be understood that the foregoing Figs. 1 to 3 are only exemplary descriptions and should not constitute any limitation to the application.

To facilitate the understanding of the embodiments of the present application, the following briefly introduces several concepts involved in the embodiments of the present application.

1. Remote interference (RI)

Under special atmospheric conditions, electromagnetic waves can propagate in the atmosphere by super-refraction, just like propagating forward in a waveguide. This is called an atmospheric duct phenomenon. Due to the atmospheric duct phenomenon, network devices (such as gNB) in a certain area may be interfered by signals from network devices (such as gNB) in a certain area that are far apart. For example, in a time division duplex (TDD) scenario, the downlink signal of the network device in area A propagates to area B, which is far apart due to the atmospheric duct phenomenon. The distance from area A to area B can reach 300 kilometers. When the downlink signal of the network equipment in the area A reaches the area B after a long-distance transmission delay, the area B may be undergoing uplink transmission. At this time, the signal in the area A will cause interference to the area B. This interference can be called long-range interference.

In the following embodiments, to distinguish, one or more network devices that are interfered are recorded as the interfered network device group, and one or more network devices that are interfered are recorded as the interfered network device group. It should be understood that the interfered network device group may specifically be one or more network devices, and the interfered network device group may specifically be one or more network devices. For example, a network device in area B that is interfered by a signal in area A is recorded as the interfered network device group, and a network device in area A that interferes with the interfered network device is recorded as an interfering network device group.

It should be understood that the interfered network device group and the interfered network device group are only named for distinguishing, and do not limit the protection scope of the embodiments of the present application.

Among them, the interfered network device group may have a CU-DU architecture, that is, the interfered network device group may specifically be one or more DUs, and the one or more DUs may be centrally controlled by one CU. The interfering network device group may have a CU-DU architecture, that is, the interfering network device group may specifically be one or more DUs, and the one or more DUs may be centrally controlled by one CU.

2. Reference signal (RS)

The interfered network device group that is subject to remote interference may notify the interfering network device group that the remote interference has occurred by sending a reference signal. For example, the interfered network device group may continuously send the characteristic reference signal sequence through the air interface to notify the interfering network device group that the remote interference has occurred. The reference signal carries identification information of the interfered network device group, so that the interfered network device group knows the address of the interfered network device group.

3. Interference over thermal (IoT)

The interference heat and dryness ratio can be used to measure the amount of interference that the network equipment is subjected to. Generally, the interference is described as'several times larger than heat and dryness. In the process of detecting uplink long-range interference, network equipment usually uses IoT as the main measurement index to judge the situation of uplink long-range interference.

4. Remote interference management (remote interference management, RIM)

Remote interference management can solve the problem of remote interference. Figure 4 shows a schematic flow diagram of remote interference management.

S410: The interfering network device group causes remote interference to the interfered network device group.

S420: The interfered network device group sends the reference signal, and accordingly, the interfered network device group receives the reference signal from the interfered network device group.

The interfering network device group can always monitor the reference signal. After receiving the reference signal, the interfering network device group can determine that it has caused interference to the interfered network device group.

S430: The interfering network device group implements measures to eliminate remote interference, and sends a first notification message to the interfered network device group.

The first notification message is used to notify the interfering network device group that the reference signal of the interfered network device group has been received.

S440: The interfering network device group ends implementing measures to eliminate remote interference, and sends a second notification message to the interfered network device group.

The second notification message is used to notify that the reference signal disappears, and the interfering network device group can stop monitoring the reference signal. In other words, after failing to receive the reference signal, the interfering network device group ends implementing measures to eliminate remote interference, and may send a second notification message for notifying the disappearance of the reference signal to the interfered network device group.

It should be understood that the above-mentioned first communication message and second notification message are merely naming for distinguishing, and do not limit the application.

S450: The interfered network device group stops sending the reference signal.

In one method, the interfering network device group will take separate measures to eliminate the remote interference after receiving the reference signal. In other words, the interfering network device group will take separate measures to eliminate the interference when it learns that it has caused interference to the interfered network device group. Remote interference.

If the interfering network device group takes separate measures to eliminate remote interference, it will cause all network devices in the interfering network device group or too many network devices to participate in the elimination of remote interference, resulting in unnecessary cell performance loss at the interfering network device group.

In view of this, the embodiments of the present application provide a communication method, through the coordination of CU, AMF, or OAM, or the network device itself decides whether to perform interference cancellation, so that the network device with fewer or most effective interference network devices in the group of network devices performs interference cancellation In this way, not only can the interference be eliminated, but also the influence on the communication performance of the interfering network device group can be reduced.

In order to facilitate the understanding of the embodiments of the present application, before introducing the embodiments of the present application, the following descriptions are made.

In the embodiments of this application, "pre-definition" can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate related information in the device (for example, including terminal devices and/or network devices). The specific implementation method is not limited. For example, pre-defined may refer to the definition in the agreement.

The "saving" mentioned in the embodiments of the present application may refer to storing in one or more memories. The one or more memories may be provided separately, or integrated in an encoder or decoder, a processor, or a communication device. The one or more memories may also be partly provided separately, and partly integrated in the decoder, processor, or communication device. The type of the memory may be any form of storage medium, which is not limited in this application.

In the embodiments of the present application, "protocol" may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, or a related protocol applied to a future communication system, which is not limited in this application.

In the embodiments of the present application, the first, the second, etc. are only convenient for distinguishing different objects, and should not constitute any limitation to the present application.

In the embodiments of the present application, "and/or" describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone These three situations. The character "/" generally indicates that the associated objects are in an "or" relationship. "Multiple" refers to two or more, and other measure words are similar. In addition, for elements in the singular form "a", "an" and "the", unless the context clearly dictates otherwise, it does not mean "one or only one", but means "one or more At one". For example, "a device" means to one or more such devices. Furthermore, at least one (at least one of)..." means one or any combination of subsequent associated objects, for example, "at least one of A, B and C" includes A, B, C, AB, AC, BC, or ABC.

FIG. 5 is a schematic flowchart of a communication method 500 according to an embodiment of the present application. The method involves centralized units and distributed units. As shown in Figure 5, an embodiment of the present application provides a communication method, which includes:

S510: The first DU and the second DU receive reference signals from the interfered network device group.

N DUs receive the reference signal from the interfered network equipment group. The N DUs cause long-range interference to the interfered network equipment group. That is to say, the interfered network equipment group sends the reference signal through the air interface, and the N DUs receive To the reference signal, where N is an integer greater than or equal to 1. For ease of description, FIG. 5 only lists the first DU and the second DU for description, and the first DU and the second DU belong to any two DUs among the N DUs. The N DUs can be controlled by one CU.

Among them, the interfered network device group may specifically be K network devices, and the K network devices are all subject to the remote interference of N DUs; or, the interfered network device group has a CU-DU architecture, that is, the interfered network device group is specific There can be K DUs, and K is an integer greater than or equal to 1.

When the interfered network device group sends the reference signal, the reference signal may carry the identity (ID) of the interfered network device group, and the N DUs can parse the identity.

By enabling the N DUs to learn the identity of the interfered network device group, the N DUs can learn which network devices they have caused remote interference to.

Optionally, after the N DUs receive the reference signal from the interfered network device group, the interference intensity may be calculated based on the reference signal.

Wherein, the interference intensity may include, for example, the interference intensity information calculated based on the reference signal from the interfered network device group; and/or, the N DUs themselves received remote interference from the interfered network device group and the remote The measured value of the interference intensity, such as the IoT value. The following are all expressed by interference intensity.

As shown in Figure 3, the DU can report information to the CU through the F1 interface. In the embodiment of the present application, the N DUs can report the information of the reference signal to the CU, so that the CU can select the DU for interference cancellation, so as to prevent the N DUs from performing interference cancellation alone, causing unnecessary communication at the N DUs Performance loss.

It should be understood that, in the embodiments of the present application, performing interference cancellation, which may also be referred to as performing remote interference cancellation, is to eliminate the remote interference caused by N DUs to the interfered network device group. The following is succinct, all referred to as performing interference cancellation.

S520: The first DU and the second DU report the information of the reference signal to the CU.

The N DUs report the information of the reference signal to the CU. In FIG. 5, for convenience of description, only the first DU and the second DU are listed as an example.

Among them, the reference signal information reported by the N DUs carries the identity of the interfered network device group, so that the CU can determine which DU carries the same identity by carrying the identity of the interfered network device group, in other words, it can determine What are the DUs that interfere with the same network equipment?

Optionally, the reference signal information reported by the N DUs includes: reference signal strength and/or interference strength.

Wherein, the reference signal strength may be represented by, for example, reference signal receiving power (RSRP).

The interference intensity may include, for example, the interference intensity information calculated based on the reference signal of the interfered network device group, and/or the measured remote interference strength of the N DUs themselves subjected to the remote interference from the interfered network device group Measured value. Specifically, refer to the description in S510, which will not be repeated.

The information of the reference signal reported by the N DUs may be transmitted through the F1AP message, that is, the N DUs send the information of the reference signal to the CU through the F1AP message.

The information of the reference signal reported by the N DUs may be carried in an existing message. Or, for the information of the reference signal reported by N DUs, a new class 2 element procedure can also be defined, for example, it can be represented by RIM RS Indication, and the RIM RS Indication contains the information of the reference signal, for example, RIM RS INDICATION message , As shown in Table 1 below. It should be understood that RIM RS Indication and RIM RS INDICATION message are only a naming method and are not limited.

Table 1

Elementary ProcedureElementary Procedure	MessageMessage
RIM RS IndicationRIM RS Indication	RIM RS INDICATION messageRIM RS INDICATION message

After the CU receives the reference signal information reported by the N DUs, it can select the DU for interference cancellation.

S530. The CU selects a DU for interference cancellation.

The N DUs report the information of the reference signal to the CU, and the identity of the interfered network device group carried in the reported information of the reference signal may be the same or different. The CU respectively selects one or more DUs from the DUs carrying the same identifier for interference cancellation.

The CU can select a DU for interference cancellation through any of the following implementation methods.

Implementation manner 1: The CU may select DUs for interference cancellation among DUs carrying the same identifier based on the information of the currently reported reference signal.

Take the same identifier carried by N DUs as an example for illustrative description. The CU arbitrarily selects N1 DUs among the reported N DUs for interference cancellation, where N1 is less than N, and N1 is an integer greater than 1 or equal to 1.

Implementation manner 2: The CU may select DUs for interference cancellation among DUs carrying the same identifier in combination with the historical interference cancellation process (for example, the last interference cancellation process) based on the information of the currently reported reference signal.

Take the same identifier carried by N DUs as an example for illustrative description. Assuming that in the historical interference cancellation process, N2 DUs out of N DUs are used for interference cancellation, the CU selects N2 DUs from the reported N DUs for interference cancellation, where N2 is less than or equal to N, and N2 is greater than 1 or an integer equal to 1. Among them, the DU selected by the CU and the DU in the historical interference cancellation process may be completely the same, partly the same, or completely different, which is not limited.

Implementation manner 3, the CU may select DUs for interference cancellation among DUs carrying the same identifier based on the information of the currently reported reference signal and combined with the information of the historically reported reference signal.

Take the same identifier carried by N DUs as an example for illustrative description. For example, the historically reported reference information includes the reference signal strength and/or interference strength, and the CU may combine the historically reported reference signal information to determine the reference signal strength and/or interference strength, based on the reference signal strength and/or interference strength, Select a DU for interference cancellation from N DUs.

Implementation manner 4, based on the reference signal strength and/or interference strength included in the currently reported reference signal information, the CU may select DUs for interference cancellation from DUs carrying the same identifier.

Take the same identifier carried by N DUs as an example for illustrative description. For example, the reference signal information reported by the N DUs includes reference signal strength and/or interference strength, and the CU may select a DU for interference cancellation from the N DUs based on the reference signal strength and/or interference strength.

The foregoing only exemplarily lists several possible implementations, and the embodiments of this application are not limited to this. Any implementation that enables the CU to select one or more DUs from N DUs for interference cancellation falls into this application. The scope of protection of the embodiment.

In the above several implementation manners, when the CU selects the target DU based on the reference signal strength and/or interference strength, it can be selected by any of the following methods:

Method 1. Choose the one with higher reference signal strength;

Method 2: Select the reference signal whose strength exceeds the first threshold;

Method 3, choose the one with greater interference intensity;

Method 4, select the interference intensity that exceeds the second threshold.

The above methods 1 to 4 will be described in detail later.

After selecting a DU for interference cancellation, the CU sends instruction information to the DU for interference cancellation, which is used to instruct the DU to perform interference cancellation. Still taking the first DU and the second DU as an example, assuming that in S530, the CU selects the first DU for interference cancellation, the method 500 further includes S540:

S540. The CU sends indication information to the first DU, where the indication information is used to instruct the first DU to perform interference cancellation.

For ease of description, FIG. 5 only lists the indication information that the CU sends to the first DU to indicate the interference message. It should be understood that, in S540, the CU sends indication information to each DU selected for interference cancellation.

There are many methods for DU interference cancellation, which are not limited in this application. For example, the DU can eliminate or reduce the long-range interference caused to the interfered network equipment group by reducing the downlink power; another example, the DU can be used in the frequency domain (such as frequency band, etc.) and time domain (such as subframes, etc.) where interference is generated. ), or in the airspace (such as beams or beam sets, etc.) to stop sending data, etc., to eliminate or reduce the long-range interference caused to the interfered network device group. It should be understood that any measures that can be taken to reduce the remote interference of N DUs to the interfered network device group fall within the protection scope of this application.

Optionally, the CU may also determine whether the remote interference of the N DUs to the interfered network device group is eliminated.

S550. The CU determines whether the remote interference is eliminated.

In the embodiments of the present application, whether the remote interference is eliminated, in other words, whether the remote interference still exists, in other words, whether the interference is eliminated or whether the interference still exists. Whether the remote interference is eliminated can indicate whether the remote interference is completely eliminated; or, it can also indicate whether the interference intensity exceeds a preset threshold; or, it can also indicate whether the interference intensity is reduced; or, it can also indicate whether the degree of interference reduction is greater than a preset value, etc. . In this regard, the embodiment of the present application does not limit it, and the following is used to indicate whether the remote interference is eliminated. The preset threshold or preset value may be a preset threshold, for example, a predetermined threshold or a preset value configured by a network device, which is not limited.

Correspondingly, in the embodiments of the present application, the remote interference has been eliminated, in other words the interference has been eliminated, it can mean that the remote interference has been completely eliminated, or it can also mean that the interference intensity does not exceed the preset threshold, or it can also mean the interference intensity Already reduced, or, it can also mean that the degree of interference intensity has decreased beyond a preset value, and so on. In this regard, the embodiment of the present application does not make a limitation, and the following is used to indicate that the remote interference has been eliminated.

Correspondingly, in the embodiments of the present application, the remote interference is not eliminated, in other words, the interference is not eliminated, which may indicate that the remote interference is not completely eliminated, or it may indicate that the interference intensity exceeds a preset threshold, or it may also indicate that the interference intensity is not eliminated. Change or increase in interference intensity, or it can also mean that the degree of interference intensity decline does not exceed a preset value, and so on. In this regard, the embodiment of the present application does not make a limitation, and the following is used to indicate that the remote interference is not eliminated.

In a possible situation, the CU determines remote interference cancellation.

In this case, the DU performing interference cancellation keeps the current configuration, or the DU performing interference cancellation keeps the current communication resource configuration until the RIM process ends. Regarding the RIM process, refer to the description of FIG. 4, which will not be repeated here.

In another possible situation, the CU determines that the remote interference has not been eliminated.

In this case, the CU can perform S530, that is, the CU selects one or more DUs from the remaining DUs to continue interference cancellation, and then can continue to perform S540 and S550 until it is determined that the remote interference has been eliminated. Among them, the remaining DU is a DU without interference cancellation among the N DUs, such as the second DU.

Or, in this case, N DUs can perform S510, that is, re-receive the reference signal, and then report to the CU, and the CU can perform S530, that is, the CU selects one or more DUs from the remaining DUs or all the reported DUs. Continue to perform interference cancellation, and then continue to perform S540 and S550 until it is determined that the remote interference has been eliminated.

Or, in this case, the DU performing interference cancellation may further reduce downlink power or stop communication until the CU determines that the remote interference has been eliminated.

In the following, the actions after the CU determines that the remote interference is eliminated or the CU determines that the remote interference is not eliminated will not be repeated.

The CU can determine whether the remote interference is eliminated by any of the following methods.

Method A: CU inquires about the remote interference status of the interfered network device group, and receives the response message from the interfered network device group;

Method B: The CU asks about the remote interference status of the interfered network equipment group, and determines whether the remote interference is eliminated according to whether the response message is received within a preset time period;

Method C: The CU determines whether the remote interference is eliminated according to whether the notification message is received within the preset time period;

Method D: The CU determines whether the remote interference is eliminated according to the remote interference intensity information sent by the interfered network device group.

The following describes the above-mentioned method A, method B, method C, and method D in detail.

Method A: The CU inquires about the remote interference status of the interfered network device group, and receives a response message from the interfered network device group.

Based on the identity of the interfered network device group, the CU or N DUs can send an inquiry message to the interfered network device group. The inquiry message is used to inquire whether the remote interference caused by the N DU to the interfered network device group is eliminated, for example, by Backhaul signaling inquires about the remote interference status to the interfered network equipment group. Among them, N DUs send inquiry messages to the interfered network equipment group, which can be understood as any one or more of the N DUs sending inquiry messages to the interfered network equipment group; or, it can also be understood as N DUs The DU with the coordination function in the DU sends an inquiry message to the interfered network device group; or, it can also be understood as that a representative DU in the N DU sends an inquiry message to the interfered network device group; or, it can also be understood as , One or more of the DUs performing interference cancellation send an inquiry message to the interfered network device group.

In the following, an exemplary description is given by taking the CU sending an inquiry message to the interfered network device group as an example.

The CU sends an inquiry message to the interfered network device group. It can be inquired after the CU instructs the DU to perform interference cancellation, or after the DU interference cancellation processing, or after the CU selects the DU for interference cancellation Inquiry, this embodiment of the application does not limit this.

The inquiry message sent by the CU to the interfered network device group can be transmitted through the NGAP message. As shown in Figure 6, the CU sends the inquiry message to the AMF, and the AMF then sends the inquiry message to the interfered network device group. The inquiry message can be carried in an existing message, such as requesting the remote interference status of the interfered network device group through the information element Request RI status IE in the existing NGAP message. Alternatively, the inquiry message may also be a redefined NGAP message, and the redefined NGAP message includes the information element Request RI status IE. It should be understood that the information element Request RI status IE is only a naming method and is not limited.

It should be understood that the foregoing is only an example of AMF, and this application is not limited to this. Any solution that can implement any AMF function falls within the protection scope of the embodiments of this application.

The redefined NGAP message can be represented by, for example, RAN RI STATUS REQUEST message and AMF RI STATUS REQUEST message. Among them, RAN RI STATUS REQUEST message is the message from CU to AMF, and RAN RI STATUS REQUEST message contains the information element Request RI status IE. Among them, AMF RI STATUS REQUEST message is the message from AMF to the interfered network device group, and AMF RI STATUS REQUEST message contains the information element Request RI status IE.

It should be understood that the naming of each message mentioned above is only a naming method, and is not limited.

After receiving the inquiry message, the interfered network device group replies with a response message to the CU. The response message is used to indicate that the remote interference has been eliminated, or the response message is used to indicate that the remote interference has not been eliminated. The CU can determine whether the remote interference is eliminated according to the response message.

In a possible implementation manner, the response message may be transmitted through a reference signal message sent through the air interface. That is, the interfered network equipment group can send a reference signal message to the DU. In the reference signal message, t bits are used to indicate whether the DU remote interference is eliminated, and the DU then informs the CU whether the remote interference is eliminated. Wherein, t is an integer greater than 1 or equal to 1. Assuming that t is equal to 1, you can use '1' to indicate that the remote interference has not been eliminated, and use '0' to indicate that the remote interference has been eliminated; alternatively, you can also use '1' to indicate that the remote interference has been eliminated, and '0' to indicate that the remote interference has not been eliminated .

In another possible implementation manner, the response message may be transmitted through an NGAP message. As shown in FIG. 6, the interfered network device group sends a response message to the AMF, and the AMF sends a response message to the CU. For example, the information element RI status IE in the existing NGAP message can be used to indicate whether the interference is eliminated. For another example, the redefined NGAP message can also be used to indicate whether the remote interference is eliminated. For example, the redefined NGAP message can be represented by RAN RI STATUS message and AMF RI STATUS message. Among them, RAN RI STATUS message is the message from the interfered network device group to the AMF, and the RAN RI STATUS message contains the information element RI status IE. Among them, AMF RI STATUS message is the message from AMF to CU, and AMF RI STATUS message contains the cell RI status IE.

Based on method A, the CU can ask the interfered network device group about the remote interference status, and according to the response message returned by the interfered network device group, conveniently and quickly confirm whether the remote interference is eliminated.

Method B: The CU asks about the remote interference status of the interfered network device group, and determines whether the remote interference is eliminated according to whether the reply message is received within a preset time period.

Based on the identity of the interfered network device group, the CU or N DUs can send an inquiry message to the interfered network device group to inquire whether the remote interference caused by the DU to the interfered network device group is eliminated, for example, through fallback signaling to The interfered network device group asks about the remote interference status. Regarding the CU or N DUs sending inquiry messages to the interfered network device group, refer to the description in Method A, which will not be repeated here.

For the CU, if the CU receives a response message within the preset time period, and the response message is used to indicate that the remote interference has been eliminated, the CU determines that the remote interference has been eliminated; if the CU does not receive the response message within the preset time period, Then the CU determines that the remote interference has not been eliminated. For example, after the CU sends an inquiry message to the interfered network device group, the CU starts the timer with the preset duration as the time length. If the CU receives a response message during the timer operation phase, and the response message is used to indicate that the remote interference has been eliminated, The CU determines that the remote interference has been eliminated; if the CU has not received the response message when the timer expires, the CU determines that the remote interference has not been eliminated.

Or, for the DU, if the DU receives a response message within a preset period of time, and the response message is used to indicate that the remote interference has been eliminated, the DU determines that the remote interference has been eliminated and informs the CU that the remote interference has been eliminated; If the DU does not receive a response message within the time period, the DU determines that the remote interference has not been eliminated, and informs the CU that the remote interference has not been eliminated. For example, after the DU sends an inquiry message to the interfered network device group, it starts the timer with the preset duration as the time length. If the DU receives a response message during the timer operation phase, and the response message is used to indicate that the remote interference has been eliminated, then The DU determines that the remote interference has been eliminated; if the DU has not received a response message when the timer expires, the DU determines that the remote interference has not been eliminated.

Among them, the preset duration may be a preset duration, such as pre-defined by the protocol or pre-configured by the network device; or it may be a duration dynamically set according to actual conditions; or it may be a duration estimated based on historical conditions In this regard, the embodiment of the present application does not limit it.

For the form of the response message, refer to the description in Method A, which will not be repeated here.

For the interfered network device group, after receiving the inquiry message, if the interfered network device group detects that the remote interference is eliminated, it can immediately reply to the DU or CU with a response message, and the response message is used to indicate that the remote interference has been eliminated; If the interfered network device group detects that the remote interference has not been eliminated, it does not reply with a response message.

Among them, the interfered network equipment group can detect whether the remote interference is eliminated after receiving the inquiry message; or the interfered network equipment group may periodically detect whether the remote interference is eliminated after receiving the inquiry message; or the interfered network equipment group After receiving the inquiry message, it may be detected irregularly whether the remote interference is eliminated; or the interfered network device group may periodically or irregularly detect whether the remote interference is eliminated, which is not limited in the embodiment of the present application.

Based on method B, by inquiring the interference status from the interfered network device group, and according to whether the response message from the interfered network device group is received within a preset period of time, the CU can accurately confirm whether the interference is eliminated, and can save signaling overhead.

Method C: The CU determines whether the remote interference is eliminated according to whether the notification message is received within a preset time period.

Compared with method B, in method C, the DU or CU does not need to send an inquiry message to the interfered network device group.

For the CU, if the CU receives a notification message within the preset time period, and the notification message is used to indicate that the remote interference has been eliminated, the CU determines that the remote interference has been eliminated; if the CU does not receive the notification message within the preset time period, Then the CU determines that the remote interference has not been eliminated. For example, when the CU instructs the DU to start interference cancellation, the CU starts the timer with the preset duration as the length of time. If the CU receives a notification message during the timer operation phase and the notification message is used to indicate that the remote interference has been eliminated, the CU determines The remote interference has been eliminated; if the CU has not received the notification message at the end of the timer, the CU determines that the remote interference has not been eliminated.

Or, for the DU, if the DU receives a notification message within a preset time period, and the notification message is used to indicate that the remote interference has been eliminated, the DU determines that the remote interference has been eliminated and informs the CU that the interference has been eliminated; If the DU does not receive the notification message within the time period, the DU determines that the remote interference is not eliminated, and notifies the CU that the interference is not eliminated. For example, when the DU starts to cancel the interference, it starts the timer with the preset duration as the time length. If the DU receives a notification message during the timer running phase and the notification message is used to indicate that the remote interference has been eliminated, the DU determines that the remote interference has been eliminated. Elimination; if the DU has not received the notification message at the end of the timer, the DU determines that the remote interference has not been eliminated.

For the form of the notification message, please refer to the description of the response message in Method A, which will not be repeated here.

For the interfered network device group, it can periodically or irregularly detect whether the remote interference is eliminated. If the interfered network device group detects that the remote interference has been eliminated, it can immediately send a notification message that the remote interference has been eliminated to the DU or CU , The notification message can be sent through backhaul or carried in the reference signal sent on the air interface; if the interfered network equipment group detects that the remote interference is not eliminated, the notification message may not be sent, or the reference signal sent on the air interface It carries messages that the remote interference has not been eliminated.

Based on method C, the DU or CU can accurately confirm whether the remote interference is eliminated according to whether the notification message of the interfered network device group is received within the preset time period, and can save signaling overhead.

The remote interference intensity information sent by the interfered network device group, that is, the remote interference intensity received by the interfered network device group, may be an IoT value or other remote interference strength information. The remote interference intensity information may be carried in the reference signal sent by the interfered network equipment group, or may be specially sent by the interfered network equipment group, or may be carried in the response message as described in way A. There is no limitation on the form of the remote interference intensity information.

For the CU, whether the interference is eliminated can be determined according to whether the remote interference intensity information is received, or it can also be determined whether the interference is eliminated according to the received remote interference intensity information. For example, if the CU receives the remote interference intensity information, the CU determines that the remote interference is not eliminated; if the CU does not receive the remote interference intensity information, the CU determines that the remote interference is eliminated. For another example, if the CU receives the remote interference intensity information within the preset time period, the CU determines that the remote interference is not eliminated; if the CU does not receive the remote interference intensity information within the preset time period, the CU determines that the remote interference intensity information is eliminated.

Alternatively, for the DU, whether the interference is eliminated can be determined according to whether the remote interference intensity information is received, or it can also be determined whether the interference is eliminated according to the received remote interference intensity information. For example, if the DU receives the remote interference intensity information, the DU determines that the remote interference is not eliminated; if the DU does not receive the remote interference intensity information, the DU determines that the remote interference is eliminated. For another example, if the DU receives the remote interference intensity information DU within the preset time period, the DU determines that the remote interference is not eliminated; if the DU does not receive the remote interference intensity information within the preset time period, the DU determines that the remote interference intensity information is eliminated.

For the interfered network equipment group, it can periodically or irregularly detect whether the remote interference is eliminated, and send the remote interference intensity information to the DU or CU. Or, if the interfered network equipment group detects remote interference cancellation, it can immediately send remote interference strength information to the DU or CU. The remote interference strength information can be carried in the reference signal sent by the air interface, or it can be carried in In the response message in mode A; if the interfered network device group detects that the remote interference is not eliminated, the remote interference strength information may not be sent, or the reference signal sent by the air interface may also carry the message that the remote interference is not eliminated.

The foregoing only exemplarily lists four methods, and the CU can determine whether the remote interference is eliminated based on any of the foregoing methods. The embodiment of the present application is not limited to this, and any manner that enables the CU to determine whether the remote interference is eliminated falls within the protection scope of the embodiment of the present application.

The methods 1 to 4 above are described in detail below.

Method 1. Choose the one with higher reference signal strength.

Choosing the one with a higher reference signal strength can also be understood as the reference signal strength of the DU performing interference cancellation is greater than the reference signal strength of the remaining DUs. Assuming that the identity of the interfered network device group in the information of the reference signal reported by the N DUs is the same, and the remaining DUs are DUs other than the DU for interference cancellation among the N DUs.

For example, N DUs include DU1, DU2, DU3, DU4, DU5, and DU6, and the identities of the interfered network device groups in the reference signal information reported by DU1, DU2, DU3, DU4, DU5, and DU6 are all the same, and DU1, DU2 The reference signal strength of DU3 is greater than the reference signal strength of DU4, DU5, and DU6, and the DUs for interference cancellation include DU1, DU2, and DU3. In other words, the CU can select DU1, DU2, and DU3 for interference cancellation.

Method 2: Select the reference signal whose strength exceeds the first threshold.

Wherein, the first threshold may be preset, for example, pre-defined by the protocol, or pre-configured by the network device; or it may be dynamically set according to the actual situation, such as the average value of multiple reference signal strengths; or It is estimated based on historical conditions, which is not limited in the embodiments of this application.

For example, the N DUs include DU1, DU2, DU3, DU4, DU5, and DU6, and the identity of the interfered network device group in the reference signal information reported by DU1, DU2, DU3, DU4, DU5, and DU6 are all the same. For example, the first threshold may be the average value of the reference signal strength reported by DU1, DU2, DU3, DU4, DU5, and DU6, and the DU whose reference signal strength exceeds the first threshold is the DU for interference cancellation. For another example, the first threshold may be the product of the sum of the reference signal strengths reported by DU1, DU2, DU3, DU4, DU5, and DU6 and the coefficient t, where t is greater than 0 and t is less than 1, and the reference signal strength exceeds the first threshold The DU is the DU for interference cancellation.

Method 3, choose the one with greater interference intensity.

Choosing a larger interference intensity can also be understood as that the interference intensity of the DU that performs interference cancellation is greater than the interference intensity of the remaining DUs.

For example, N DUs include DU1, DU2, DU3, DU4, DU5, and DU6, and the identities of the interfered network device groups in the reference signal information reported by DU1, DU2, DU3, DU4, DU5, and DU6 are all the same, and DU1, DU2 , The interference intensity of DU3 is greater than the interference intensity of DU4, DU5, and DU6, the DUs for interference cancellation include DU1, DU2, and DU3. In other words, the CU can select DU1, DU2, and DU3 for interference cancellation.

Method 4, select the interference intensity that exceeds the second threshold.

Wherein, the second threshold can be preset, for example, pre-defined by the protocol, or pre-configured by the network device; or it can be dynamically set according to the actual situation, such as the average value of multiple interference intensities; or, it can be Estimated based on historical conditions, this is not limited in the embodiment of the present application.

For example, the second DU includes DU1, DU2, DU3, DU4, DU5, and DU6, and the identities of the interfered network device groups in the reference signal information reported by DU1, DU2, DU3, DU4, DU5, and DU6 are all the same. For example, the second threshold may be the average value of the interference intensity reported by DU1, DU2, DU3, DU4, DU5, and DU6, and the DU whose interference intensity exceeds the second threshold is the target DU. For another example, the second threshold may be the product of the sum of the interference intensities reported by DU1, DU2, DU3, DU4, DU5, and DU6 and the coefficient t, where t is greater than 0 and t is less than 1, and the interference intensity exceeds the second threshold. For the target DU.

Based on the above four methods, the CU can select the main interference source, so that the main interference source takes interference elimination measures, which not only reduces the effect of long-range interference, but also avoids unnecessary cell performance loss at the DU.

It should be understood that the above method is only an exemplary description, and this application is not limited thereto. For example, any modification based on the above four methods belongs to the protection scope of this application.

FIG. 7 is a schematic flowchart of a communication method 700 according to an embodiment of the present application. This method involves AMF or OAM, and gNB. As shown in Figure 7, an embodiment of the present application provides a communication method, which includes:

S710. The first gNB and the second gNB receive reference signals from the interfered network device group.

N gNBs receive the reference signal from the interfered network equipment group, and the N gNBs all cause long-range interference to the interfered network equipment group, that is, the interfered network equipment group sends the reference signal through the air interface, and the N gNB receives To the reference signal, where N is an integer greater than or equal to 1. For ease of description, FIG. 7 only lists the first gNB and the second gNB for description. The first gNB and the second gNB belong to any two gNBs of the N gNBs.

In addition, in this embodiment, the interfering network device group does not have a CU-DU architecture. For example, the interfering network device group is gNB, or it may be other network devices. For ease of description, gNB is used as an example for introduction.

The description of the method 500 with reference to the interfered network device group is succinct here and will not be repeated here.

When the interfered network device group sends the reference signal, the reference signal carries the identity (ID) of the interfered network device group, and the N gNBs can resolve the identity.

By enabling the N gNBs to learn the identity of the interfered network device group, the N gNBs can learn which network devices they cause remote interference to.

Optionally, after N gNBs receive the reference signal from the interfered network device group, the interference intensity may be calculated based on the reference signal. Regarding the interference intensity, please refer to the description in the method 500, which is not repeated here.

In the embodiment of this application, N gNBs can report reference signal information to the coordinating network element, so that the coordinating network element can select the gNB for interference cancellation, avoiding N gNBs from performing interference cancellation alone, which causes unnecessary interference at the N gNBs. Communication performance loss.

It should be understood that, in the embodiments of the present application, interference cancellation, which can also be referred to as remote interference cancellation, is to eliminate the remote interference caused by N gNBs to the interfered network device group. The following is succinct, all referred to as performing interference cancellation.

Among them, the coordination network element is only a naming used to indicate its function, and its naming does not limit the protection scope of the embodiments of the present application. The coordination network element may be, for example, AMF; or, the coordination network element may also be OAM; or, the coordination network element may also be one or more gNBs among N gNBs, and the one or more gNBs may be gNBs with coordination functions. , Or the one or more gNBs may be representative gNBs, which is not limited. The following uniformly takes the coordination network element as an example for exemplification. It should be understood that the coordination network elements below can all be replaced by AMF, OAM, or gNB.

S720. The first gNB and the second gNB report the information of the reference signal to the coordination network element.

The N gNBs report the information of the reference signal to the coordination network element. In FIG. 7 for convenience of description, only the first gNB and the second gNB are listed as examples.

Among them, the reference signal information reported by the N gNBs carries the identity of the interfered network device group, so that the coordinated network element can determine which gNB carries the same identity by carrying the identity of the interfered network device group. In other words, It is possible to determine which gNBs are remotely interfering with the same interfered network device group.

Optionally, the information of the reference signals reported by the N gNBs includes: reference signal strength and/or interference strength. Regarding the reference signal strength and the interference strength, please refer to the description in the method 500, which will not be repeated here.

The information of the reference signals reported by the N gNBs may be transmitted through NGAP messages. Assuming that the coordination network element is AMF, N gNBs send reference signal information to AMF. The information of the reference signal reported by the N gNBs may be carried in an existing message. Or, for the information of the reference signal reported by N gNBs, a new class 2 element procedure can also be defined, for example, it can be represented by RIM RS Indication, and the RIM RS Indication contains reference signal information, for example, RIM RS INDICATION message , As shown in Table 1 above. It should be understood that RIM RS Indication and RIM RS INDICATION message are only a naming method and are not limited.

After the coordination network element receives the information of the reference signal reported by the N gNBs, it can select a gNB for interference cancellation from the N gNBs.

S730. The coordination network element selects a gNB for interference cancellation.

The N gNBs report the information of the reference signal to the coordination network element, and the identity of the interfered network device group carried in the information of the reported reference signal may be the same or different. The coordination network element respectively selects one or more gNBs from the gNBs carrying the same identifier for interference cancellation.

The coordination network element can select a gNB for interference cancellation through any of the following implementation methods.

Implementation manner 1: The coordination network element may select the gNB for interference cancellation among the gNBs carrying the same identifier based on the information of the currently reported reference signal.

Take the same identifier carried by N gNBs as an example for illustration. The coordination network element selects N1 gNBs from the reported N gNBs for interference cancellation, where N1 is less than or equal to N, and N1 is an integer greater than or equal to 1.

Implementation manner 2: The coordination network element can select the gNB for interference cancellation from the gNB carrying the same identifier in combination with the historical interference cancellation process (for example, the last interference cancellation process) based on the information of the currently reported reference signal.

Take the same identifier carried by N gNBs as an example for illustration. Assuming that in the historical interference cancellation process, N2 gNBs out of the N gNBs perform interference cancellation, the coordination network element selects N2 gNBs from the reported N gNBs for interference cancellation, where N2 is less than or equal to N, and N2 Is an integer greater than or equal to 1. Among them, the gNB selected by the coordination network element and the gNB in the historical interference cancellation process may be completely the same, partly the same, or completely different, which is not limited.

Implementation manner 3, the coordination network element can select the gNB for interference cancellation among the gNBs carrying the same identifier based on the information of the currently reported reference signal, combined with the information of the historically reported reference signal.

Take the same identifier carried by N gNBs as an example for illustration. For example, historically reported reference information includes reference signal strength and/or interference strength, and the coordination network element may combine historically reported reference signal information to determine the reference signal strength and/or interference strength, based on the reference signal strength and/or interference Intensity, select a gNB for interference cancellation from N gNBs.

Implementation manner 4, the coordination network element may select a gNB for interference cancellation among gNBs carrying the same identifier based on the reference signal strength and/or interference strength included in the currently reported reference signal information.

Take the same identifier carried by N gNBs as an example for illustration. For example, in S720, the reference signal information reported by N gNBs includes the reference signal strength and/or interference strength, and the coordination network element may select from N gNBs for interference cancellation based on the reference signal strength and/or interference strength. gNB.

The foregoing only exemplarily lists several possible implementations, and the embodiments of this application are not limited to this. Any implementation that enables the coordination network element to select one or more gNBs from N gNBs for interference cancellation falls into The protection scope of the embodiments of this application.

In the above several implementation manners, when the coordination network element selects the gNB for interference cancellation based on the reference signal strength and/or interference strength, it can be selected by any of the following methods:

Method 1. Choose the one with higher reference signal strength;

Method 3, choose the one with greater interference intensity;

Method 4, select the interference intensity that exceeds the second threshold.

Regarding the foregoing method 1 to method 4, please refer to the description in method 500 for details, which will not be repeated here.

After the coordination network element selects a gNB for interference cancellation, it sends indication information to the selected gNB for instructing the gNB to perform interference cancellation. Still taking the first gNB and the second gNB as examples, it is assumed that in S730, the coordination network element selects the first gNB for interference cancellation, and the method 700 further includes S740:

S740. The coordination network element sends instruction information to the first gNB, where the instruction information is used to instruct the first gNB to perform interference cancellation.

For ease of description, FIG. 7 only lists the indication information that the coordination network element sends to the first gNB to indicate the interference message. It should be understood that in S740, the coordination network element sends indication information to each gNB selected for interference cancellation.

There are many methods for gNB to perform interference cancellation, which are not limited in this application. For example, gNB can eliminate or reduce the long-range interference caused to the interfered network equipment group by reducing the downlink power; another example, gNB can be used in the frequency domain (such as frequency band, etc.) and time domain (such as subframes, etc.) where interference occurs. ), or in the airspace (such as beams or beam sets, etc.) to stop sending data, etc., to eliminate or reduce the remote interference caused to the interfered network device group. It should be understood that any measures that can be taken to reduce the remote interference of N gNBs to the interfered network device group fall within the protection scope of this application.

Optionally, the coordination network element may also determine whether the interference of the N gNBs to the interfered network device group is eliminated.

S750. Coordinate the network element to determine whether the remote interference is eliminated.

In the embodiments of the present application, whether the remote interference is eliminated, in other words, whether the remote interference still exists, in other words, whether the interference is eliminated or whether the interference still exists. Whether the remote interference is eliminated can indicate whether the remote interference is completely eliminated; or, it can also indicate whether the interference intensity exceeds a preset threshold; or, it can also indicate whether the interference intensity is reduced; or, it can also indicate whether the interference reduction degree is greater than a preset value, etc. . In this regard, the embodiment of the present application does not limit it, and the following is used to indicate whether the remote interference is eliminated. The preset threshold or the preset value may be a preset threshold, for example, a predetermined threshold or a preset value pre-configured by a protocol or a network device, which is not limited.

The coordination network element determines whether the remote interference is eliminated, or the gNB can also determine whether the remote interference is eliminated. When the coordination network element is OAM, gNB can determine whether the remote interference is eliminated, or gNB can also report the result of determining whether the remote interference is eliminated to OAM, so that OAM can determine whether the remote interference is eliminated; when the coordination network element is AMF, The AMF can determine whether the remote interference is eliminated, or the AMF may also send the result of determining whether the remote interference is eliminated to the gNB, so that the gNB can determine whether the remote interference is eliminated.

The following is an example of determining whether the long-range interference is eliminated by the gNB as an example.

In one possible situation, gNB determines remote interference cancellation.

In this case, the gNB performing interference cancellation keeps the current configuration, or the gNB performing interference cancellation keeps the current communication resource configuration until the RIM process ends. Regarding the RIM process, refer to the description of FIG. 4, which will not be repeated here.

In another possible situation, the gNB determines that the remote interference is not eliminated.

In this case, the coordination network element can perform S730, that is, the coordination network element selects one or more gNBs from the remaining gNB to continue interference cancellation, and then can continue to perform S740 and S750 until it is determined that the remote interference has been eliminated. Among them, the remaining gNB is the gNB for which interference cancellation is not performed among the N gNBs.

Or, in this case, N gNBs can perform S710, that is, re-receive the reference signal, and then report to the coordinating network element, and the coordinating network element can perform S530, that is, the coordinating network element can select among the remaining gNBs or all the reported gNBs One or more gNBs continue to perform interference cancellation, and then S740 and S750 can be continued until it is determined that the remote interference has been eliminated.

Or, in this case, the gNB performing interference cancellation may further reduce the downlink power or stop communication until it is determined that the remote interference has been eliminated.

The gNB can use any of the following methods to determine whether the remote interference is eliminated.

Method A: gNB inquires about the remote interference status of the interfered network device group, and receives the response message from the interfered network device group;

Method B: gNB asks about the remote interference status of the interfered network device group, and determines whether the remote interference is eliminated according to whether the response message is received within a preset time period;

Method C: gNB determines whether the remote interference is eliminated according to whether the notification message is received within the preset time period;

Method D: The gNB determines whether the remote interference is eliminated according to the remote interference intensity information sent by the interfered network device group.

Method A: gNB inquires about the remote interference status of the interfered network device group, and receives a response message from the interfered network device group.

Based on the identity of the interfered network equipment group, the gNB sends an inquiry message to the interfered network equipment group, or the coordinating network element may send an inquiry message to the interfered network equipment group, and the inquiry message is used to inquire about N gNBs about the interfered network equipment Whether the remote interference caused by the group still exists, for example, by inquiring the remote interference status to the interfered network device group through fallback signaling. The following uses gNB to send an inquiry message to the interfered network device group as an example for exemplification. The gNB sends an inquiry message to the interfered network equipment group, which can be inquired after the gNB that needs interference cancellation instructed by the coordination network element to perform interference cancellation, or it can be inquired after the interference cancellation processing of the gNB that performs interference cancellation is completed, or, It may also be inquired after the coordination network element selects the gNB that needs to perform interference cancellation, which is not limited in the embodiment of the present application.

Among them, the gNB sending an inquiry message to the interfered network device group can be understood as that any one or more gNBs in the N gNB send an inquiry message to the interfered network device group; or, it can also be understood as the information in the N gNB The gNB with the coordination function sends an inquiry message to the interfered network device group; or, it can also be understood that a representative gNB among the N gNBs sends an inquiry message to the interfered network device group. The following uses gNB to send an inquiry message to the interfered network device group as an example for exemplification.

The inquiry message sent by the gNB to the interfered network device group can be transmitted through NGAP messages. Assuming that the coordinating network element is AMF, gNB sends an inquiry message to AMF, and AMF sends an inquiry message to the interfered network device group. The inquiry message can be carried in an existing message, such as requesting the remote interference status of the interfered network device group through the information element Request RI status IE in the existing NGAP message. Alternatively, the inquiry message may also be a redefined NGAP message, and the redefined NGAP message includes the information element Request RI status IE. It should be understood that the information element Request RI status IE is only a naming method and is not limited.

The redefined NGAP message can be represented by, for example, RAN RI STATUS REQUEST message and AMF RI STATUS REQUEST message. Among them, RAN RI STATUS REQUEST message is the message from gNB to AMF, and RAN RI STATUS REQUEST message contains the information element Request RI status IE. Among them, AMF RI STATUS REQUEST message is the message from AMF to the interfered network device group, and AMF RI STATUS REQUEST message contains the information element Request RI status IE.

After receiving the inquiry message, the interfered network device group returns a response message to the coordination network element or gNB. The response message is used to indicate that the remote interference has been eliminated, or the response message is used to indicate that the remote interference has not been eliminated. The coordination network element or gNB can determine whether the remote interference is eliminated through the received response message.

In a possible implementation manner, the response message may be transmitted through a reference signal message sent through the air interface. That is, the interfered network device group may send a reference signal message to the gNB, and t bits are used in the reference signal message to indicate whether the remote interference is eliminated, where t is an integer greater than or equal to 1. Assuming that t is equal to 1, you can use '1' to indicate that the remote interference has not been eliminated, and use '0' to indicate that the remote interference has been eliminated; alternatively, you can also use '1' to indicate that the remote interference has been eliminated, and '0' to indicate that the remote interference has not been eliminated .

In yet another possible implementation manner, the response message may be transmitted through NGAP messages. Assuming that the coordinating network element is AMF, the interfered network device group sends a response message to AMF, and AMF can send a response message to gNB. For example, the information element RI status IE in the existing NGAP message can be used to indicate whether the remote interference is eliminated. For another example, the redefined NGAP message can also be used to indicate whether the remote interference is eliminated. For example, the redefined NGAP message can be represented by RAN RI STATUS message and AMF RI STATUS message. Among them, RAN RI STATUS message is the message from the interfered network device group to the AMF, and the RAN RI STATUS message contains the information element RI status IE. Among them, AMF RI STATUS message is the message from AMF to gNB, and AMF RI STATUS message contains the cell RI status IE.

It should be understood that when the coordinating network element is the AMF, the interfered network device group sends a response message to the AMF, and the AMF can determine whether the remote interference is eliminated according to the response message, and the AMF may not send a response message to the gNB again. When the coordinating network element is OAM, gNB sends an inquiry message to the interfered network device group, and gNB receives the response message from the interfered network device group, and gNB reports the received response message to OAM so that OAM can determine the remote interference Whether to eliminate.

Based on method A, the gNB can query the interfered network device group about the remote interference status, and according to the response message returned by the interfered network device group, it is convenient and quick to confirm whether the remote interference is eliminated.

Method B: The gNB asks about the remote interference status of the interfered network device group, and determines whether the remote interference is eliminated according to whether the reply message is received within a preset time period.

Based on the identity of the interfered network equipment group, the gNB sends an inquiry message to the interfered network equipment group, or the coordinating network element may send an inquiry message to the interfered network equipment group, and the inquiry message is used to inquire about N gNBs about the interfered network equipment Whether the remote interference caused by the group still exists, for example, by inquiring the remote interference status to the interfered network device group through fallback signaling. Regarding the gNB sending the inquiry message to the interfered network device group, please refer to the description in Method A, which will not be repeated here.

For gNB, if the gNB receives a response message within the preset time period and the response message is used to indicate that the remote interference has been eliminated, the gNB determines that the remote interference has been eliminated; if the gNB does not receive the response message within the preset time period, Then the gNB determines that the remote interference has not been eliminated. For example, after the gNB sends an inquiry message to the interfered network device group, it starts the timer with the preset duration as the time length. If the gNB receives a response message during the timer operation phase, and the response message is used to indicate that the remote interference has been eliminated, then The gNB determines that the remote interference has been eliminated; if the gNB has not received a response message when the timer expires, the gNB determines that the remote interference has not been eliminated.

Or, for the coordination network element, if the coordination network element receives a response message within a preset time period, and the response message is used to indicate that the remote interference has been eliminated, the coordination network element determines that the remote interference has been eliminated; If the internal coordination network element does not receive the response message, the coordination network element determines that the remote interference has not been eliminated. For example, after the coordinating network element sends an inquiry message to the interfered network device group, it starts a timer with the preset duration as the time length. If the coordinating network element receives a response message during the timer operation phase, and the response message is used to indicate remote interference If it has been eliminated, the coordination network element determines that the remote interference has been eliminated; if the coordination network element has not received a response message at the end of the timer, the coordination network element determines that the remote interference has not been eliminated.

For the interfered network device group, after receiving the inquiry message, if the interfered network device group detects that the remote interference is eliminated, it can immediately reply to the gNB or the coordinating network element with a response message, and the response message is used to indicate that the remote interference has been Elimination; if the interfered network device group detects that the remote interference has not been eliminated, it will not respond with a response message.

Based on method B, gNB can ask the interfered network device group about the remote interference status, and according to whether the response message from the interfered network device group is received within the preset time, it can accurately confirm whether the remote interference is eliminated, and it can save trust. Order overhead.

Method C: The gNB determines whether the remote interference is eliminated according to whether the notification message is received within the preset time period.

Compared with method B, in method C, the gNB or the coordination network element does not need to send an inquiry message to the interfered network device group.

For gNB, if the gNB receives a notification message within the preset time period, and the notification message is used to indicate that the remote interference has been eliminated, the gNB determines that the remote interference has been eliminated; if the gNB does not receive the notification message within the preset time period, Then the gNB determines that the remote interference has not been eliminated. For example, when gNB starts to cancel interference, it starts a timer with a preset duration. If the gNB receives a notification message during the timer operation phase and the notification message is used to indicate that the remote interference has been eliminated, the gNB determines that the remote interference has been eliminated. Elimination; if the gNB has not received the notification message at the end of the timer, the gNB determines that the remote interference has not been eliminated.

Or, for the coordination network element, if the coordination network element receives a notification message within the preset time period, and the notification message is used to indicate that the remote interference has been eliminated, the coordination network element determines that the remote interference has been eliminated; If the internal coordination network element does not receive the notification message, the coordination network element determines that the remote interference has not been eliminated. For example, when the coordination network element instructs the gNB to perform interference cancellation, the timer can be started with a preset duration. If the coordination network element receives a notification message during the timer operation phase, and the notification message is used to indicate that the remote interference has been eliminated, Then the coordination network element determines that the remote interference has been eliminated; if the coordination network element has not received the notification message when the timer expires, the coordination network element determines that the remote interference has not been eliminated.

For the interfered network equipment group, it can periodically or irregularly detect whether the remote interference is eliminated. If the interfered network equipment group detects that the remote interference is eliminated, it can immediately send the remote interference eliminated to the gNB or the coordination network element Notification message. The notification message can be sent through backhaul or carried in the reference signal sent by the air interface; if the interfered network equipment group detects that the remote interference has not been eliminated, the notification message may not be sent, or it can be sent over the air interface The reference signal carries a message that the remote interference has not been eliminated.

Based on method C, the gNB or the coordinating network element can accurately confirm whether the remote interference is eliminated according to whether the notification message sent by the interfered network device group is received within a preset time period, and can save signaling overhead.

The remote interference intensity information sent by the interfered network device group, that is, the remote interference intensity received by the interfered network device group, may be an IoT value or other remote interference strength information. The interference intensity information may be carried in the reference signal sent by the interfered network equipment group, or may be specially sent by the interfered network equipment group, or may also be carried in the response message as described in way A. There is no limitation on the form of the remote interference intensity information.

For the gNB, it can be determined whether the interference is eliminated according to whether the remote interference intensity information is received, or it can also be determined whether the interference is eliminated according to the received remote interference intensity information. For example, if the gNB receives the remote interference strength information, the gNB determines that the remote interference is not eliminated; if the gNB does not receive the remote interference strength information, the gNB determines that the remote interference is eliminated. For another example, if the gNB receives the remote interference strength information gNB within the preset time period, the gNB determines that the remote interference is not eliminated; if the gNB does not receive the remote interference strength information within the preset time period, the gNB determines that the remote interference is eliminated.

Alternatively, for the coordination network element, whether the interference is eliminated can be determined according to whether the remote interference intensity information is received, or it can also be determined whether the interference is eliminated according to the received remote interference intensity information. For example, if the coordination network element receives the remote interference intensity information, the coordination network element determines that the remote interference is not eliminated; if the coordination network element does not receive the remote interference intensity information, the coordination network element determines that the remote interference is eliminated. For another example, if the coordination network element receives the remote interference intensity information within the preset time period, the coordination network element determines that the remote interference has not been eliminated; if the coordination network element does not receive the remote interference intensity information within the preset time period , The coordination network element determines the remote interference cancellation.

For the interfered network equipment group, it can periodically or irregularly detect whether the remote interference is eliminated, and send the remote interference intensity information to the gNB or the coordination network element. Or, if the interfered network equipment group detects remote interference cancellation, it can immediately send remote interference strength information to the gNB or the coordinating network element. The remote interference strength information can be carried in the reference signal sent by the air interface, or it can be carried. In the response message as described in Method A; if the interfered network device group detects that the remote interference has not been eliminated, the remote interference strength information may not be sent, or the reference signal sent by the air interface may also carry the uneliminated remote interference news.

The foregoing only exemplarily lists four methods. The gNB or the coordination network element can determine whether the remote interference is eliminated based on any of the foregoing methods. The embodiment of the present application is not limited to this, and any manner that enables the gNB or the coordinating network element to determine whether the remote interference is eliminated falls within the protection scope of the embodiment of the present application.

FIG. 8 is a schematic flowchart of a communication method 800 according to an embodiment of the present application. The method involves centralized units and distributed units. As shown in Figure 8, an embodiment of the present application provides a communication method, which includes:

S810. The DU receives the reference signal from the interfered network device group.

N DUs receive reference signals from the interfered network equipment group, and the N DUs all cause long-range interference to the interfered network equipment group, that is, the interfered network equipment group sends reference signals to the N DUs through the air interface. The reference signal is received, where N is an integer greater than or equal to 1. For the convenience of description, FIG. 8 only lists one DU for description, and the DU belongs to any DU among the N DUs.

For the DU and the interfered network device group, reference may be made to the description in method 500, which will not be repeated here.

In the embodiment of the present application, the DU can determine whether to perform interference cancellation by itself based on the received reference signal, so as to avoid the DU from performing interference cancellation separately after receiving the reference signal, causing unnecessary communication performance loss at the DU.

It should be understood that, in the embodiments of the present application, performing interference cancellation, which may also be referred to as performing remote interference cancellation, is to eliminate the remote interference caused by the DU to the interfered network device group. The following is succinct, all referred to as performing interference cancellation.

S820: The DU determines whether to perform remote interference cancellation.

In a possible implementation manner, the DU can be determined according to whether the reference signal strength exceeds the threshold #1.

The DU can determine whether to perform interference cancellation according to the reference signal strength and threshold #1. For example, when the reference signal strength of the DU exceeds the threshold #1, interference cancellation is performed; when the reference signal strength of the DU does not exceed the threshold #1, interference cancellation is not performed. Regarding the description of the reference signal strength reference method 500, details are not repeated here.

In one case, the threshold #1 may be a preset threshold, such as a threshold pre-specified by a protocol, or a threshold pre-configured by a network device; or, it may also be a threshold estimated based on historical conditions.

In another case, the threshold #1 may be a threshold allocated by the CU to the DU in advance. Among them, the CU can refer to the description in the method 500, and the details are not repeated here.

Specifically, the DU reports the information of the reference signal to the CU, and accordingly, the CU receives the information of the reference signal reported by the DU. Among them, the reference signal information reported by the DU carries the identity of the interfered network device group, so that the CU can determine which DU carries the same identity by carrying the identity of the interfered network device group, in other words, it can determine the remote interference What are the DUs of the same network equipment? For the specific form of the DU reporting the information of the reference signal to the CU, refer to S520 in the method 500, which will not be repeated here.

For DUs carrying the same identifier, the CU assigns threshold #1. For example, the reference signal information includes the reference signal strength, and the CU determines a threshold value #1 according to the reference signal strength, such as taking the average value of the N reference signal strengths, and sending the threshold value #1 to the DU. For another example, the CU determines a threshold #1 according to the reference signal strength in the historically reported reference information, and sends the threshold #1 to the DU.

In another possible implementation manner, the DU can be determined according to whether the interference intensity exceeds the threshold #2.

The DU can determine whether to perform interference cancellation according to the interference intensity and threshold #2. For example, when the interference intensity of DU exceeds threshold #2, interference cancellation is performed; when the interference intensity of DU does not exceed threshold #2, interference cancellation is not performed. Regarding the interference intensity, refer to the description in the method 500, which will not be repeated here.

In one case, the threshold #2 may be a preset threshold, such as a threshold pre-specified by a protocol or a threshold pre-configured by a network device; or, it may also be a threshold estimated based on historical conditions.

In another case, the threshold #2 may be a threshold allocated by the CU to the DU in advance. Among them, the CU can refer to the description in the method 500, and the details are not repeated here.

For DUs carrying the same identifier, the CU allocates threshold #2. For example, the information of the reference signal includes the interference intensity, and the CU determines a threshold #2 according to the interference intensity, such as taking the average value of N interference intensities, and sends the threshold #2 to the DU. For another example, the CU determines a threshold #2 according to the interference intensity in the historically reported reference information, and sends the threshold #2 to the DU.

For the method for DU interference cancellation, refer to the description in method 500, which will not be repeated here.

Optionally, the DU can also determine whether the remote interference of the DU to the interfered network device group is eliminated, or it can also be understood as the CU determines whether the remote interference of the DU to the interfered network device group is eliminated, or it can also be understood as, The DU that performs interference cancellation in the DU determines whether the remote interference to the interfered network device group is eliminated. The following is an example of DU determining whether the remote interference is eliminated.

S830. The DU determines whether the remote interference is eliminated.

In the embodiments of the present application, whether the interference is eliminated, in other words, whether the interference still exists, in other words, whether the remote interference is eliminated or whether the remote interference still exists. Whether the interference is eliminated may indicate whether the interference is completely eliminated; or, it may also indicate whether the interference intensity exceeds a preset threshold; or, it may also indicate whether the interference intensity is reduced; or, it may also indicate whether the degree of interference reduction exceeds a preset value, and so on. In this regard, the embodiment of the present application does not make a limitation, and the following is used to indicate whether the interference is eliminated. The preset threshold or the preset value may be a preset threshold, for example, a predetermined threshold or a preset value pre-configured by a protocol or a network device, which is not limited.

In a possible situation, the DU determines remote interference cancellation.

In this case, the DU keeps the current configuration, or the DU keeps the current communication resource configuration until the RIM process ends. Regarding the RIM process, refer to the description of FIG. 4, which will not be repeated here.

In another possible situation, the DU determines that the remote interference has not been eliminated.

In this case, the DU can notify the CU that the remote interference is not eliminated, and the CU can assign threshold #3 and/or threshold #4 to the DU, and the DU continues to perform S820 until it is determined that the remote interference has been eliminated; or, the CU can assign a threshold to the remaining DUs #3 and/or threshold #4, the remaining DUs continue to perform S820 until it is determined that the remote interference has been eliminated, and the remaining DUs are DUs that have not undergone interference cancellation. Among them, the threshold #3 is less than the preset threshold #1, and the threshold #4 is less than the preset threshold #2.

Or, in this case, the DU that performs interference cancellation in the DU can further reduce the downlink power or stop communication until the DU determines that the remote interference has been eliminated.

Among them, there are many ways to determine threshold #3 and threshold #4:

In a possible way, the threshold #3 may be a preset threshold, such as a threshold pre-specified by a protocol, or a threshold pre-configured by a network device; or, it may be a threshold estimated based on historical conditions. In other words, multiple thresholds may be configured in advance, for example, including threshold #1 and threshold #3, or including threshold #2 and threshold #4.

In another possible manner, the threshold #3 may be a threshold allocated by the CU to the DU in advance. For example, when the CU allocates the threshold #1 to the DU, the threshold #3 is allocated, that is, the CU allocates the threshold #1 and the threshold #3 to the DU. For another example, when the CU allocates the threshold #2 to the DU, the threshold #4 is allocated, that is, the CU allocates the threshold #2 and the threshold #4 to the DU.

In another possible manner, the threshold #3 may be a threshold allocated by the CU to the DU according to the information of the previously received reference signal. When the DU determines that the remote interference has not been eliminated, the CU then allocates a threshold for the DU based on the information of the previously received reference signal, such as threshold #3 and threshold #4.

In another possible way, when the DU determines that the remote interference is not eliminated, the DU reports the information of the reference signal to the CU, and accordingly, the CU receives the information of the reference signal reported by the DU. Regarding the specific form of the DU reporting the information of the reference signal to the CU, reference may be made to S520 in the method 500, which will not be repeated here. The threshold #3 or the threshold #4 may be a threshold allocated by the CU to the DU according to the reported information of the reference signal.

The foregoing introduces several possible ways of determining the threshold #3 or the threshold #4, and the application is not limited thereto.

In the following, the actions after the DU determines that the remote interference is eliminated or the DU determines that the remote interference is not eliminated will not be repeated.

DU can use any of the following methods to determine whether the remote interference is eliminated.

Method A: DU inquires about the remote interference status of the interfered network equipment group, and receives the response message from the interfered network equipment group;

Method B: DU inquires about the remote interference status of the interfered network equipment group, and determines whether the remote interference is eliminated according to whether the reply message is received within a preset time period;

Method C: DU determines whether the remote interference is eliminated according to whether the notification message is received within the preset time period;

For the above method A, method B, method C, and method D, please refer to the description in method 500, which will not be repeated here.

FIG. 9 is a schematic flowchart of a communication method 900 according to an embodiment of the present application. The method involves AMF or OAM, and base stations. As shown in Figure 9, an embodiment of the present application provides a communication method, which includes:

S910. The gNB receives the reference signal from the interfered network device group.

N gNBs receive the reference signal from the interfered network equipment group, and the N gNBs all cause long-range interference to the interfered network equipment group, that is, the interfered network equipment group sends the reference signal through the air interface, and the N gNB receives To the reference signal, where N is an integer greater than or equal to 1. For ease of description, FIG. 9 only lists one gNB for description, and the gNB belongs to any gNB among the N gNBs.

For the gNB and the interfered network device group, please refer to the description in the method 700, which will not be repeated here.

In the embodiment of the present application, the gNB may determine whether to perform interference cancellation by itself based on the received reference signal, so as to prevent the gNB from performing interference cancellation separately after receiving the reference signal, causing unnecessary communication performance loss at the gNB.

It should be understood that, in the embodiments of the present application, performing interference cancellation, which can also be referred to as performing remote interference cancellation, is to eliminate the remote interference caused by the gNB to the interfered network device group. The following is succinct, all referred to as performing interference cancellation.

S920, the gNB determines whether to perform interference cancellation.

In a possible implementation manner, gNB can be determined according to whether the reference signal strength exceeds threshold #5.

The gNB can determine whether to perform interference cancellation according to the reference signal strength and threshold #5. For example, when the reference signal strength exceeds threshold #5, interference cancellation is performed; when the reference signal strength does not exceed threshold #5, interference cancellation is not performed. Regarding the description of the reference signal strength reference method 500, details are not repeated here.

In one case, the threshold #5 may be a preset threshold, such as a threshold pre-defined by a protocol, or a threshold pre-configured by a network device; or, it may also be a threshold estimated based on historical conditions.

In another case, the threshold #5 may be a threshold pre-allocated by the coordination network element to the gNB. For the coordination network element, reference may be made to the description in method 700, which will not be repeated.

Specifically, the gNB reports the information of the reference signal to the coordination network element. Among them, the reference signal information reported by the gNB carries the identity of the interfered network device group, so that the coordinated network element can determine which gNB carries the same identity by carrying the identity of the interfered network device group, in other words, it can be determined What are the gNBs that interfere with the same network equipment remotely? For the specific form of the information of the reference signal reported by the gNB to the coordination network element, refer to S720 in the method 700, which will not be repeated here.

For the gNB carrying the same identifier, the coordination network element allocates threshold #5. For example, the reference signal information includes the reference signal strength, and the coordination network element determines a threshold #5 according to the reference signal strength, such as taking the average value of the N reference signal strengths, and sending the threshold #5 to the gNB. For another example, the coordination network element determines a threshold #5 according to the reference signal strength in the historically reported reference information, and sends the threshold #5 to the gNB.

In another possible implementation manner, the gNB may be determined according to whether the interference intensity exceeds the threshold #6.

The gNB can determine whether to perform interference cancellation according to the interference intensity and threshold #6. For example, when the interference intensity exceeds threshold #6, interference cancellation is performed; when the interference intensity does not exceed threshold #6, interference cancellation is not performed. Regarding the interference intensity, refer to the description in the method 500, which will not be repeated here.

In one case, the threshold #6 may be a preset threshold, such as a threshold pre-defined by a protocol or a threshold pre-configured by a network device; or, it may also be a threshold estimated based on historical conditions.

In another case, the threshold #6 may be a threshold pre-allocated to the gNB by the coordination network element. Among them, the coordination network element can refer to the description in the method 700, which will not be repeated.

For the gNB carrying the same identifier, the coordination network element assigns threshold #6. For example, the information of the reference signal includes the interference intensity, and the coordination network element determines a threshold #6 according to the interference intensity, such as taking the average value of N interference intensities, and sends the threshold #6 to the gNB. For another example, the coordination network element determines a threshold #6 according to the interference intensity in the historically reported reference information, and sends the threshold #6 to the gNB.

For the method of interference cancellation by the gNB, refer to the description in method 700, which will not be repeated here.

Optionally, the gNB may also determine whether the interference of the interfered network device group is eliminated.

S930, gNB determines whether the remote interference is eliminated.

In the embodiments of the present application, whether the remote interference is eliminated, in other words, whether the remote interference still exists, in other words, whether the interference is eliminated or whether the interference still exists. Whether the remote interference is eliminated can indicate whether the remote interference is completely eliminated; or, it can also indicate whether the interference intensity exceeds a preset threshold; or, it can also indicate whether the interference intensity is reduced; or, it can also indicate whether the interference reduction degree is greater than a preset value, etc. . In this regard, the embodiment of the present application does not make a limitation, and the following is used to indicate whether the interference is eliminated. The preset threshold or the preset value may be a preset threshold, for example, a predetermined threshold or a preset value pre-configured by a protocol or a network device, which is not limited.

Correspondingly, in the embodiments of the present application, the remote interference has been eliminated, in other words the interference has been eliminated, it can mean that the remote interference has been completely eliminated, or it can also mean that the interference intensity does not exceed the preset threshold, or it can also mean the interference intensity Already reduced, or, it can also mean that the degree of interference intensity has decreased beyond a preset value, and so on. In this regard, the embodiments of the present application are not limited, and the following are all expressed as long-range interference eliminated.

The gNB determines whether the remote interference is eliminated, which can also be understood as the coordination network element determines whether the remote interference of the gNB to the interfered network device group is eliminated. When the coordination network element is AMF, AMF can determine whether the remote interference is eliminated, or AMF can also send the result of determining whether the remote interference is eliminated to gNB, so that the gNB can determine whether the remote interference is eliminated; when the coordination network element is OAM, The gNB may determine whether the remote interference is eliminated, or the gNB may also report the result of determining whether the remote interference is eliminated to the OAM, so that the OAM can determine whether the remote interference is eliminated. The following is an example of determining whether the long-range interference is eliminated by the gNB as an example.

In one possible situation, gNB determines remote interference cancellation.

In this case, the gNB keeps the current configuration, or the gNB keeps the current communication resource configuration until the end of the RIM process. Regarding the RIM process, refer to the description of FIG. 4, which will not be repeated here.

In this case, the coordination network element can assign threshold #7 and/or threshold #8 to gNB, and gNB continues to perform S920 until the coordination network element or gNB determines that the remote interference has been eliminated; or, the coordination network element can assign thresholds to the remaining gNB# 7 and/or threshold #8, the remaining gNBs continue to perform S520 until the coordination network element or the gNB determines that the remote interference has been eliminated, and the remaining gNBs are gNBs that have not undergone interference cancellation among the N gNBs. Among them, the threshold #7 is less than the preset threshold #5, and the threshold #8 is less than the preset threshold #6. Or, in this case, the gNB that performs interference cancellation among the N gNBs may further reduce the downlink power or stop communication until the gNB determines that the remote interference has been eliminated.

Among them, there are many ways to determine threshold #7 and threshold #8:

In a possible manner, threshold #7 may be a preset threshold, such as a threshold pre-specified by a protocol, or a threshold pre-configured by a network device; or, it may also be a threshold estimated based on historical conditions. In other words, multiple thresholds may be configured in advance, for example, including threshold #5 and threshold #7, or including threshold #6 and threshold #8.

In another possible manner, the threshold #7 may be a threshold that the coordination network element allocates to the gNB in advance. For example, when the coordination network element allocates threshold #5 to gNB, threshold #7 is allocated, that is, the coordination network element allocates threshold #5 and threshold #7 to gNB. For another example, when the coordination network element allocates threshold #6 to gNB, threshold #8 is allocated, that is, the coordination network element allocates threshold #6 and threshold #8 to gNB.

In another possible manner, the threshold #7 may be a threshold allocated by the coordination network element to the gNB according to the information of the previously received reference signal. When the gNB determines that the remote interference is not eliminated, the coordination network element allocates a threshold for the gNB based on the information of the previously received reference signal, such as threshold #7 and threshold #8.

In another possible manner, when the gNB determines that the remote interference is not eliminated, the gNB then reports the information of the reference signal to the coordination network element, and accordingly, the coordination network element receives the information of the reference signal reported by the gNB. Regarding the specific form of the gNB reporting the information of the reference signal to the coordination network element, refer to S720 in the method 700, which will not be repeated here. The threshold #7 or the threshold #8 may be the threshold allocated by the coordination network element to the gNB according to the reported information of the reference signal.

The foregoing has introduced several possible ways of determining the threshold #7 or the threshold #8, and the application is not limited thereto.

In the following, the actions after the gNB determines that the remote interference is eliminated or the gNB determines that the remote interference is not eliminated will not be repeated.

For the foregoing manner A, manner B, manner C, and manner D, reference may be made to the description in method 700, which is not repeated here.

The communication method of the embodiment of the present application is described above with reference to FIGS. 1 to 9, and the device in the embodiment of the present application will be described below in conjunction with the accompanying drawings.

FIG. 10 is a schematic block diagram of a communication device provided by an embodiment of the present application. As shown in FIG. 10, the communication device 1000 may include a communication unit 1010 and a processing unit 1020.

In a possible design, the communication device 1000 can implement steps or processes corresponding to the centralized unit or coordination network element (such as the above-mentioned AMF, OAM, network equipment, etc.) in the above method embodiment. For example, It is a centralized unit or coordinated network element, or a chip or circuit configured in a centralized unit or coordinated network element.

In a possible implementation manner, the communication unit 1010 is configured to: obtain information about reference signals from N second network devices, where N is an integer greater than or equal to 1, and the information about the reference signal includes the interfered network device group The communication unit 1010 is further configured to: based on the information of the reference signal of the N second network devices, the first network device sends instructions to M second network devices among the N second network devices Information for interference cancellation, where M is an integer greater than or equal to 1, and M is less than or equal to N.

Optionally, the information of the reference signals of the N second network devices includes the same identification information of the interfered network device group, the information of the reference signals includes information about the strength of the reference signal, and the reference signals of the M second network devices The strength exceeds the first threshold; or, the reference signal strength of M second network devices is greater than or equal to the reference signal strength of (NM) second network devices, among (NM) second network devices and M second network devices The network equipment is different.

Optionally, the information of the reference signal of the N second network devices includes the same identification information of the interfered network device group, the information of the reference signal includes the information of the interference intensity or the information of the intensity of the remote interference, and M The interference intensity of the second network device or the intensity of remote interference received by the M second network devices exceeds the second threshold; or, the interference intensity of the M second network devices is greater than or equal to the interference of (NM) second network devices Strength, or, the strength of the M second network devices received by the remote interference is greater than or equal to the strength of the (NM) second network devices received by the remote interference, (NM) the second network device and the M second network The network equipment in the device is different.

Optionally, the communication unit 1010 is further configured to send inquiry information, and the inquiry information is used to inquire about the interference state of the interfered network device group.

Optionally, the communication unit 1010 is further configured to: receive response information for the inquiry information.

Optionally, the communication unit 1010 is further configured to: receive a notification message, which is used to notify that the interfered state of the interfered network device group is the non-eliminated state.

Optionally, the communication unit 1010 is further configured to: within a preset time period, receive information indicating that the interference state of the interfered network device group is the eliminated state.

Optionally, the communication unit 1010 is further configured to: the information of the reference signals of the N second network devices contains the same identification information of the interfered network device group, and when the information indicating the interfered network device is not received within a preset time period When the interference state of the network device group is the information of the eliminated state, send a message for indicating interference cancellation to T second network devices in the (NM) second network device, (NM) second network device It is different from the network device in the M second network devices, where T is an integer greater than or equal to 1, and T is less than or equal to (NM).

Optionally, the communication unit 1010 is further configured to: the information of the reference signal of the N second network devices contains the same identification information of the interfered network device group, when the processing unit 1020 determines the interference state of the interfered network device group When it is in the un-cancelled state, send a message indicating interference cancellation to T second network devices in (NM) second network devices, and one of (NM) second network devices and M second network devices The network devices are different, where T is an integer greater than or equal to 1, and T is less than or equal to (NM).

Optionally, the second network device is a distributed unit of an access network device; or, the second network device is a base station.

In yet another possible implementation manner, the communication unit 1010 is configured to: receive information about the first reference signal from N second network devices, where N is an integer greater than or equal to 1, and the information about the first reference signal includes The identification information of the interfering network device group; the communication unit 1010 is further configured to: send first information indicating the first condition to the N second network devices based on the information of the first reference signal of the N second network devices, The first condition is used for N second network devices to determine whether to perform interference cancellation.

Optionally, the first information includes a first threshold; the first condition is: the strength of the first reference signal exceeds the first threshold.

Optionally, the first information includes a second threshold; the first condition is that the first interference intensity or the intensity of remote interference exceeds the second threshold.

Optionally, the communication unit 1010 is further configured to: receive a notification message, which is used to notify that the interference state of the interfered network device group is the eliminated state or the uneliminated state.

Optionally, the communication unit 1010 is further configured to: the information of the reference signals of the N second network devices contains the same identification information of the interfered network device group, and when the information indicating the interfered network device is not received within a preset time period When the interference state of the network device group is the information of the eliminated state, the second information indicating the second condition is sent to the N second network devices, and the second condition is used for the N second network devices to determine whether to interfere eliminate.

Optionally, the communication unit 1010 is further configured to: the information of the reference signal of the N second network devices contains the same identification information of the interfered network device group, when the processing unit 1020 determines the interference state of the interfered network device group When it is in the un-cancelled state, the second information indicating the second condition is sent to the N second network devices, and the second condition is used by the N second network devices to determine whether to perform interference cancellation.

Optionally, the second information includes a third threshold, and the second condition is: the first reference signal strength exceeds the third threshold, and the third threshold is less than the first threshold; or, the second information includes a fourth threshold, and the second condition Yes: the first interference intensity or the intensity of remote interference exceeds the fourth threshold, and the fourth threshold is less than the second threshold.

Optionally, the communication unit 1010 is further configured to: the information of the reference signals of the N second network devices contains the same identification information of the interfered network device group, and when the information indicating the interfered network device is not received within a preset time period When the interference state of the network device group is the information of the eliminated state, obtain the information of the second reference signal from the N second network devices; based on the information of the second reference signal of the N second network devices, send the information to the Nth The second network device sends third information used to indicate the third condition, and the third condition is used by N second network devices to determine whether to perform interference cancellation.

Optionally, the communication unit 1010 is further configured to: when the processing unit 1020 determines that the interfered state of the interfered network device group is the non-cancelled state, obtain information about the second reference signal from the N second network devices; The second reference signal information of the second network device sends third information indicating the third condition to the N second network devices. The third condition is used by the N second network devices to determine whether to perform interference cancellation.

Optionally, the third information includes a fifth threshold, and the third condition is: the second reference signal strength exceeds the fifth threshold, and the fifth threshold is less than the first threshold; or, the third information includes the sixth threshold, and the third condition Yes: the second interference intensity or the intensity of the remote interference exceeds the sixth threshold, and the sixth threshold is less than the second threshold.

Optionally, the second network device is a centralized unit of the access network device; or, the second network device is a base station.

Specifically, the communication device 1000 can implement the steps or processes performed by the centralized unit or the coordination network element in the method 500, the method 700, the method 800, and the method 900 according to the embodiments of the present application. The communication device 1000 may include The centralized unit in the method 500, the method 700, the method 800, and the method 900 or the unit that coordinates the method executed by the network element. In addition, each unit in the communication device 1000 and other operations and/or functions described above are used to implement the corresponding processes of the method 500, the method 700, the method 800, and the method 900, respectively.

It should be understood that the specific process for each unit to execute the foregoing corresponding steps has been described in detail in the foregoing method embodiment, and is not repeated here for brevity.

In another possible design, the communication device 1000 can implement the steps or processes performed by the distributed unit or network device (such as gNB) in the above method embodiment. For example, it can be a distributed unit or network device. , Or a chip or circuit configured in a distributed unit or network device.

In a possible implementation manner, the communication unit 1010 is used to: send information about the reference signal to the first network device, and the information about the reference signal includes the identification information of the interfered network device group; the communication unit 1010 is also used to: obtain information from the first network device. The network equipment determines the indication information based on the information of the reference signal, the indication information is used to instruct the apparatus 1000 to perform interference cancellation; the processing unit 1020 is used to: perform interference cancellation based on the indication information.

Optionally, the information of the reference signal includes at least one of the following: information of the strength of the reference signal, information of the interference strength, or information of the strength of the remote interference.

Optionally, the processing unit 1020 is further configured to resolve the interference state of the interfered network device group from the reference signal.

Optionally, the communication unit 1010 is further configured to: when the processing unit 1020 determines that the interfered state of the interfered network device group is the non-eliminated state, send notification information to the first network device, and the notification information is used to notify the first network device The interfered state of the interfered network device group is the uneliminated state.

Optionally, the communication unit 1010 is further configured to: when the processing unit 1020 determines that the interference state of the interfered network device group is the eliminated state, send notification information to the first network device, and the notification information is used to notify the first network device The interference state of the interfered network device group is the eliminated state.

Optionally, the communication unit 1010 is further configured to: send notification information to the first network device when the information indicating that the interference state of the interfered network device group is the eliminated state is not received within a preset time period, The notification information is used to notify the first network device that the interfered state of the interfered network device group is the non-eliminated state.

Optionally, the first network device is one or more distributed units of the access network device; or, the first network device is a core network device or a network management device; or, the first network device is a base station.

In another possible implementation manner, the communication unit 1010 is configured to receive the first reference signal; the processing unit 1020 is configured to perform interference cancellation when the first condition is satisfied.

Optionally, the first condition is: the first reference signal strength exceeds the first threshold.

Optionally, the communication unit 1010 is further configured to: obtain the first threshold value from the first network device.

Optionally, the first condition is that: the first interference intensity or the intensity of remote interference exceeds a second threshold.

Optionally, the communication unit 1010 is further configured to: obtain a second threshold value from the first network device.

Optionally, the communication unit 1010 is further configured to: the first network device receives response information for the inquiry information.

Optionally, the processing unit 1020 is further configured to: perform interference when the information indicating that the interference state of the interfered network device group is the eliminated state is not received within a preset time period, and when the second condition is satisfied eliminate.

Optionally, the processing unit 1020 is further configured to: when it is determined that the interfered state of the interfered network device group is the non-cancelled state, and when the second condition is met, perform interference cancellation.

Optionally, the second condition is: the first reference signal strength exceeds a third threshold, and the third threshold is less than the first threshold; or, the second condition is: the first interference strength or the strength of remote interference exceeds the fourth threshold, The four threshold value is smaller than the second threshold value, and the first interference intensity is determined based on the first reference signal.

Optionally, the communication unit 1010 is further configured to: obtain a third threshold or a fourth threshold from the first network device.

Optionally, when the information indicating that the interfered state of the interfered network device group is the eliminated state is not received within the preset time period, the communication unit 1010 is further configured to: receive the second reference signal; Under the three conditions, the processing unit 1020 is also used to: perform interference cancellation.

Optionally, when it is determined that the interfered state of the interfered network device group is the un-cancelled state, the communication unit 1010 is further configured to: receive the second reference signal; when the third condition is met, the processing unit 1020 is further configured to: Interference elimination.

Optionally, the third condition is: the second reference signal strength exceeds the fifth threshold, and the fifth threshold is less than the first threshold; or, the third condition is: the second interference strength or the strength of the remote interference exceeds the sixth threshold, The sixth threshold is less than the second threshold, and the second interference intensity is determined based on the second reference signal.

Optionally, the communication unit 1010 is further configured to: obtain a fifth threshold or a sixth threshold from the first network device.

Specifically, the communication apparatus 1000 can implement the steps or processes executed by the distributed unit or network equipment in the method 500, the method 700, the method 800, and the method 900 according to the embodiments of the present application. The communication apparatus 1000 may include A unit that executes the method 500, the method 700, the method 800, and the method 900 performed by the distributed unit or the network device. In addition, each unit in the communication device 1000 and other operations and/or functions described above are used to implement the corresponding processes of the method 500, the method 700, the method 800, and the method 900, respectively.

FIG. 11 is a schematic structural diagram of an apparatus 1100 according to an embodiment of the present application. The device can implement the units of each step executed by the centralized unit in the above embodiments. For example, the method executed by the centralized unit in method 500 or method 800 may be executed. The device 1100 includes:

The memory 1110 is used to store programs;

Communication interface 1120, used to communicate with other devices;

The processor 1130 is configured to execute a program in the memory 1110. When the program is executed, the processor 1130 is configured to obtain information about reference signals from N second network devices through the communication interface 1120, where: N is an integer greater than 1 or equal to 1, and the information of the reference signal includes the identification information of the interfered network device group; and based on the information of the reference signal of the N second network devices, it is sent to M of the N second network devices The second network device sends information for indicating interference cancellation, where M is an integer greater than or equal to 1, and M is less than or equal to N.

or,

When the program is executed, the processor 1130 is configured to obtain information about the first reference signal from N second network devices through the communication interface 1120, where N is an integer greater than or equal to 1, and The information of a reference signal includes the identification information of the interfered network device group; and based on the information of the first reference signal of the N second network devices, the first information indicating the first condition is sent to the N second network devices , The first condition is used for N second network devices to determine whether to perform interference cancellation.

FIG. 12 is a schematic structural diagram of an apparatus 1200 according to an embodiment of the present application. The device can implement the units of each step executed by the coordination network element in the above embodiment. For example, the method executed by the coordination network element in method 700 or method 900 may be executed. The device 1200 includes:

The memory 1210 is used to store programs;

The communication interface 1220 is used to communicate with other devices;

The processor 1230 is configured to execute a program in the memory 1210. When the program is executed, the processor 1230 is configured to obtain reference signal information from N second network devices through the communication interface 1220, where: N is an integer greater than 1 or equal to 1, and the information of the reference signal includes the identification information of the interfered network device group; and based on the information of the reference signal of the N second network devices, it is sent to M of the N second network devices The second network device sends information for indicating interference cancellation, where M is an integer greater than or equal to 1, and M is less than or equal to N.

or,

When the program is executed, the processor 1230 is configured to obtain information of the first reference signal from N second network devices through the communication interface 1220, where N is an integer greater than or equal to 1, and The information of a reference signal includes the identification information of the interfered network device group; and based on the information of the first reference signal of the N second network devices, the first information indicating the first condition is sent to the N second network devices , The first condition is used for N second network devices to determine whether to perform interference cancellation.

FIG. 13 is a schematic structural diagram of an apparatus 1300 according to an embodiment of the present application. The device can implement the units of each step executed by the distributed unit in the above embodiments. For example, a method executed by a distributed unit in method 500 or method 800 may be executed. The device 1300 includes:

The memory 1310 is used to store programs;

Communication interface 1320, used to communicate with other devices;

The processor 1330 is configured to execute a program in the memory 1310. When the program is executed, the processor 1320 is configured to send reference signal information to the first network device through the communication interface 1330, and the reference signal information includes the interfered And obtaining indication information determined by the first network device based on the information of the reference signal, the indication information being used to instruct the second network device to perform interference cancellation; and the processor 1320 is configured to be based on the indication information, Perform interference cancellation.

or,

When the program is executed, the processor 1320 is configured to receive the information of the first reference signal through the communication interface 1330; and the processor 1320 is configured to perform interference when the information of the first reference signal meets the first condition eliminate.

FIG. 14 is a schematic structural diagram of a device 1400 according to an embodiment of the present application. The device can implement the units of each step executed by the network device (such as gNB) in the above embodiment. For example, the method executed by the network device in method 700 or method 900 may be executed. The device 1400 includes:

The memory 1410 is used to store programs;

Communication interface 1420, used to communicate with other devices;

The processor 1430 is configured to execute a program in the memory 1410. When the program is executed, the processor 1420 is configured to send reference signal information to the first network device through the communication interface 1430, and the reference signal information includes the interfered Identification information of the network device group; and obtaining indication information determined by the first network device based on the information of the reference signal, where the indication information is used to instruct the second network device to perform interference cancellation; and the processor 1420 is used to, based on the indication information, Perform interference cancellation.

or,

When the program is executed, the processor 1420 is configured to receive the information of the first reference signal through the communication interface 1430; and the processor 1420 is configured to perform interference when the information of the first reference signal meets the first condition eliminate.

Optionally, the aforementioned communication interface (1120, 1220, 1320, 1420) may be a receiver or a transmitter, or may also be a transceiver.

In the implementation process, the steps of the above method can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.

It should be noted that the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components . The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

According to the method provided by the embodiments of the present application, the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code runs on a computer, the computer executes the method 500, method 700, The method in any one of the embodiments shown in method 800 and method 900.

According to the method provided by the embodiments of the present application, the present application also provides a computer-readable medium that stores program code, and when the program code runs on a computer, the computer executes the method 500, method 700, The method in any one of the embodiments shown in method 800 and method 900.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk (solid state disc, SSD)) etc.

The terms "component", "module", "system", etc. used in this specification are used to denote computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, the component may be, but is not limited to, a process, a processor, an object, an executable file, an execution thread, a program, and/or a computer running on a processor. Through the illustration, both the application running on the computing device and the computing device can be components. One or more components may reside in processes and/or threads of execution, and components may be located on one computer and/or distributed between two or more computers. In addition, these components can be executed from various computer readable media having various data structures stored thereon. A component can be based on a signal having one or more data packets (for example, data from two components interacting with another component in a local system, a distributed system, and/or a network, such as the Internet that interacts with other systems through signals) Communicate through local and/or remote processes.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A communication method, characterized in that it comprises:

The first network device obtains reference signal information from N second network devices, where N is an integer greater than 1 or equal to 1, and the reference signal information includes identification information of the interfered network device group;

Based on the information of the reference signal of the N second network devices, the first network device sends information for indicating interference cancellation to M second network devices among the N second network devices, where: M is an integer greater than or equal to 1, and M is less than or equal to N.
The method according to claim 1, wherein the information of the reference signals of the N second network devices includes the same identification information of the interfered network device group, and the information of the reference signals includes the reference signal Intensity information,

The reference signal strength of the M second network devices exceeds the first threshold; or,

The reference signal strength of the M second network devices is greater than or equal to the reference signal strength of the (NM) second network devices, and the network of the (NM) second network devices and the M second network devices The equipment is different.
The method according to claim 1, wherein the information of the reference signal of the N second network devices includes the same identification information of the interfered network device group, and the information of the reference signal includes the interference intensity Information or the intensity of remote interference,

The interference intensity of the M second network devices or the intensity of remote interference received by the M second network devices exceeds a second threshold; or,

The interference strength of the M second network devices is greater than or equal to the interference strength of the (NM) second network device, or the strength of the M second network devices subject to remote interference is greater than or equal to the (NM) Second, the strength of the remote interference received by the network equipment, and the network equipment in the (NM) second network equipment is different from the network equipment in the M second network equipment.
The method according to any one of claims 1 to 3, wherein the method further comprises:

The first network device sends query information, and the query information is used to query the interference state of the interfered network device group.
The method according to any one of claims 1 to 4, wherein the method further comprises:

The first network device receives a notification message, where the notification message is used to notify that the interfered state of the interfered network device group is the non-eliminated state.
The method according to any one of claims 1 to 4, wherein the information of the reference signals of the N second network devices includes the same identification information of the interfered network device group,

When the first network device does not receive the information indicating that the interference state of the interfered network device group is the eliminated state within the preset time period, the method further includes:

The first network device sends a message for instructing interference cancellation to T second network devices among the (NM) second network devices, and the (NM) second network devices and the M second network devices The network equipment in the network equipment is different,

Wherein, T is an integer greater than or equal to 1, and T is less than or equal to (N-M).
The method according to any one of claims 1 to 4, wherein the method further comprises:

The first network device receives the information indicating that the interference state of the interfered network device group is the eliminated state within a preset time period.
The method according to any one of claims 1 to 7, wherein the information of the reference signals of the N second network devices includes the same identification information of the interfered network device group,

When the interfered state of the interfered network device group is the non-eliminated state, the method further includes:

The first network device sends a message for instructing interference cancellation to T second network devices among the (NM) second network devices, and the (NM) second network devices and the M second network devices The network equipment in the network equipment is different,

Wherein, T is an integer greater than or equal to 1, and T is less than or equal to (N-M).
A communication method, characterized in that it comprises:

The second network device sends information about the reference signal to the first network device, where the information about the reference signal includes the identification information of the interfered network device group;

Acquiring, by the second network device, indication information determined by the first network device based on the information of the reference signal, where the indication information is used to instruct the second network device to perform interference cancellation;

Based on the instruction information, the second network device performs interference cancellation.
The method according to claim 9, wherein the information of the reference signal comprises at least one of the following: information of reference signal strength, information of interference strength, or information of the strength of remote interference.
The method according to claim 9 or 10, wherein the method further comprises:

The second network device sends query information, and the query information is used to query the interference status of the interfered network device group.
The method according to any one of claims 9 to 11, wherein:

When the interfered state of the interfered network device group is the non-eliminated state, or, when the second network device does not receive the interfered state indicating the interfered network device group within a preset time period When the status is deleted,

The method also includes:

The second network device sends notification information to the first network device, where the notification information is used to notify the first network device that the interfered state of the interfered network device group is an uneliminated state.
The method according to any one of claims 9 to 11, wherein the method further comprises:

The second network device receives the information used to indicate that the interference state of the interfered network device group is the eliminated state within a preset time period.
The method according to any one of claims 1 to 13, characterized in that,

The first network device is one or more centralized units of the access network device, and the second network device is a distributed unit of the access network device; or

The first network device is a core network device or a network management device, and the second network device is a base station; or

The first network device is a base station, and the second network device is a base station.
A communication device, characterized by comprising:

A transceiver, configured to obtain reference signal information from N second network devices, where N is an integer greater than 1 or equal to 1, and the reference signal information includes identification information of the interfered network device group;

The transceiver is further configured to, based on the information of the reference signal of the N second network devices, send information for indicating interference cancellation to M second network devices among the N second network devices, Wherein, M is an integer greater than or equal to 1, and M is less than or equal to N.
The apparatus according to claim 15, wherein the information of the reference signals of the N second network devices includes the same identification information of the interfered network device group, and the information of the reference signals includes the reference signal Intensity information,

The reference signal strength of the M second network devices exceeds the first threshold; or,

The reference signal strength of the M second network devices is greater than or equal to the reference signal strength of the (NM) second network devices, and the network of the (NM) second network devices and the M second network devices The equipment is different.
The apparatus according to claim 16, wherein the information of the reference signal of the N second network devices includes the same identification information of the interfered network device group, and the information of the reference signal includes the interference intensity Information or the intensity of remote interference,

The interference intensity of the M second network devices or the intensity of remote interference received by the M second network devices exceeds a second threshold; or,

The interference strength of the M second network devices is greater than or equal to the interference strength of the (NM) second network device, or the strength of the M second network devices subject to remote interference is greater than or equal to the (NM) Second, the strength of the remote interference received by the network equipment, and the network equipment in the (NM) second network equipment is different from the network equipment in the M second network equipment.
The device according to any one of claims 16 to 17, wherein the transceiver is further used for:

Send inquiry information, where the inquiry information is used to inquire about the interference state of the interfered network device group.
The device according to any one of claims 16 to 18, wherein the transceiver is further configured to:

Receive a notification message, where the notification message is used to notify that the interfered state of the interfered network device group is the non-eliminated state.
The device according to any one of claims 16 to 18, wherein the device further comprises:

When the information indicating that the interfered state of the interfered network device group is the eliminated state is not received within the preset time period,

The transceiver is further configured to send a message for instructing interference cancellation to T second network devices in the (NM) second network device, and the (NM) second network device and the M second network device Second, the network equipment in the network equipment is different,

Wherein, T is an integer greater than or equal to 1, and T is less than or equal to (N-M).
The device according to any one of claims 16 to 18, wherein the transceiver is further configured to:

The information indicating that the interference state of the interfered network device group is the eliminated state is received within the preset time period.
The apparatus according to any one of claims 16 to 19, wherein when the interference state of the interfered network device group is an un-cancelled state,

The transceiver is also used for:

Send a message for instructing interference cancellation to T second network devices in (NM) second network devices, the (NM) second network devices and the network devices in the M second network devices different,

Wherein, T is an integer greater than or equal to 1, and T is less than or equal to (N-M).
The device according to any one of claims 16 to 22, characterized in that:

The apparatus is one or more centralized units of the access network equipment, and the second network equipment is a distributed unit of the access network equipment; or

The device is a core network device or a network management device, and the second network device is a base station; or

The apparatus is one or more of the N second network devices, and the second network device is a base station.
A communication device, characterized by comprising:

A transceiver, configured to send reference signal information to the first network device, where the reference signal information includes the identification information of the interfered network device group;

The transceiver is further configured to obtain indication information determined by the first network device based on the information of the reference signal, where the indication information is used to instruct the second network device to perform interference cancellation;

Based on the instruction information, the second network device performs interference cancellation.
The apparatus according to claim 24, wherein the information of the reference signal comprises at least one of the following: information of reference signal strength, information of interference strength, or information of the strength of remote interference.
The device according to claim 24 or 25, wherein the transceiver is further used for:

Send inquiry information, where the inquiry information is used to inquire about the interference state of the interfering network device group.
The device according to any one of claims 24 to 26, wherein:

When the interfered state of the interfered network device group is in the non-cancelled state, or, when the interference state indicating that the interfered network device group is in the canceled state is not received within a preset time period Information,

The transceiver is also used for:

Sending notification information to the first network device, where the notification information is used to notify the first network device that the interfered state of the interfered network device group is an uneliminated state.
The device according to any one of claims 24 to 26, wherein the transceiver is further configured to:

The information indicating that the interference state of the interfered network device group is the eliminated state is received within the preset time period.
The device according to any one of claims 24 to 28, wherein:

The first network device is one or more centralized units of the access network device, and the device is a distributed unit of the access network device; or

The first network device is a core network device or a network management device, and the device is a base station; or

The first network device is a base station, and the device is a base station.
A computer storage medium, characterized in that a computer program is stored thereon, and when the computer program is executed by a computer, the computer executes: the method according to any one of claims 1 to 8, or, as The method of any one of claims 9-14.