CN118944799A

CN118944799A - Communication method and communication device

Info

Publication number: CN118944799A
Application number: CN202310541244.XA
Authority: CN
Inventors: 袁明; 焦淑蓉; 李军
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2023-05-12
Filing date: 2023-05-12
Publication date: 2024-11-12
Also published as: WO2024235112A1

Abstract

A communication method and a communication device, the method comprising: the terminal receives first indication information and/or second indication information from the network equipment, wherein the first indication information is used for indicating a first timing parameter, and the first timing parameter is used for acquiring time resource synchronization with the second terminal. The second indication information is used for indicating a frequency hopping parameter, and the frequency hopping parameter is adopted by a signal sent by the second terminal. The first indication information and the second indication information are used for eliminating signal interference between the first terminal and the second terminal by the first terminal. The terminal can acquire the interference signal from the second terminal, so that the interference among the terminals in the downlink signal can be reduced, and the reliability of downlink transmission is improved.

Description

Communication method and communication device

Technical Field

The present application relates to the field of communications, and more particularly, to a communication method and a communication apparatus.

Background

Duplex modes in which communication devices communicate include a frequency division duplex (frequency division duplex, FDD) mode and a time division duplex (time division duplex, TDD) mode. And aiming at the problem that the TDD mode can not simultaneously carry out uplink transmission and downlink transmission and increase transmission delay, a sub-band full duplex (subband full duplex, SBFD) mode is currently proposed, wherein part of sub-bands in a frequency domain in part of time domain resources (such as part of symbols or part of time slots) are configured as uplink resources, and part of sub-bands are configured as downlink resources on the basis of the TDD mode, so that uplink and downlink can be simultaneously carried out between a terminal and network equipment in different sub-bands.

In a communication system, when terminals communicate in TDD mode and SBFD mode, uplink and downlink resource configurations of different terminals may be different, and if one terminal is transmitting an uplink signal at the same time when receiving a downlink signal, and the two terminals are close to each other, the uplink signal may interfere with the terminal receiving the downlink signal, and the interference may be referred to as cross link interference (cross LINK INTERFERENCE, CLI) between the terminals. At present, the purpose of avoiding interference can be achieved by a mode that an interference terminal does not send an uplink signal when the interfered terminal receives a downlink signal based on scheduling, but the mode reduces uplink transmission timeliness of the interference terminal and causes resource waste. How to realize that the interference of the uplink signal in the downlink received signal is eliminated by the interfered terminal under the condition that the interference terminal is not inhibited from transmitting the uplink signal is a problem to be solved currently.

Disclosure of Invention

The embodiment of the application provides a communication method and a communication device, which can improve the reliability of downlink transmission.

In a first aspect, a communication method is provided, which may be performed by a terminal or a module (e.g. a chip) configured in (or for) the terminal. The method performed by the first terminal will be described below as an example.

The method comprises the following steps: the method comprises the steps that a first terminal receives first indication information and/or second indication information from network equipment, wherein the first indication information is used for indicating a first timing parameter, the second indication information is used for indicating a frequency hopping parameter, the first timing parameter is used for acquiring time resource synchronization with a second terminal, and the frequency hopping parameter is a frequency hopping parameter adopted by a signal sent by the second terminal. The first indication information and the second indication information are used for eliminating signal interference between the first terminal and the second terminal by the first terminal.

According to the scheme, the first terminal acquires the auxiliary information (including the first indication information and/or the second indication information) from the network equipment, so that the first terminal can reconstruct the interference signal from the second terminal based on the auxiliary information, the first terminal can realize that the first terminal can reduce interference in the downlink received signal based on the reconstructed interference signal under the condition that the interference terminal does not need to be inhibited from sending the uplink signal, the signal-to-interference-plus-noise ratio (signal to interference plus noise ratio, SINR) of the received signal is improved, the probability of successful demodulation of the received signal by the terminal is improved, and the reliability of downlink transmission is improved. In addition, the mode does not need to inhibit the interference terminal from sending the uplink signal, so that the condition of resource waste can be reduced, and the resource utilization rate is improved.

With reference to the first aspect, in certain implementation manners of the first aspect, the method further includes: and the first terminal determines an interference signal from the second terminal according to the first indication information and/or the second indication information. And the first terminal obtains data in the first signal according to the interference signal and the first signal from the network equipment.

According to the scheme, the first terminal can reconstruct and obtain the interference signal of the second terminal through the auxiliary information, and eliminates the interference signal of the second terminal in the received signal obtained by receiving the downlink signal, so that the downlink data in the received signal can be accurately obtained.

With reference to the first aspect, in certain implementation manners of the first aspect, the method further includes: the first terminal sends third indication information to the network device, wherein the third indication information is used for indicating the number P of terminals which are supported by the first terminal and eliminate interference from a plurality of terminals, the first indication information and the second indication information indicate parameters of Q second terminals, Q is smaller than or equal to P, and P, Q is a positive integer. And the first terminal determines an interference signal from a second terminal according to the first indication information and/or the second indication information, and the method comprises the following steps: and the first terminal determines interference signals from the Q second terminals according to the first indication information and/or the second indication information.

According to the scheme, the first terminal can report the interference elimination capability supported by the first terminal to the network equipment, wherein the interference elimination capability comprises the number of terminals which can eliminate interference from a plurality of terminals while supporting. The network equipment can provide the terminal with the auxiliary information of Q terminals meeting the terminal interference elimination capability. The first terminal may determine, based on the auxiliary information provided by the network device, interference signals of the Q terminals, so as to cancel the interference signals of the Q terminals in the downlink signal, and accurately acquire downlink data.

With reference to the first aspect, in certain implementation manners of the first aspect, the third indication information is further used to indicate an interference cancellation manner of a downlink signal supported by the first terminal, where the interference cancellation manner includes a manner of canceling an interference signal from a terminal in the downlink signal.

According to the scheme, the first terminal can report the interference elimination mode supported by the first terminal to the network equipment, so that the network equipment can provide corresponding interference elimination configuration information for the terminal based on the interference elimination mode supported by the first terminal.

With reference to the first aspect, in certain implementation manners of the first aspect, the first indication information and the second indication information indicate parameters of Q second terminals, and the first terminal determines an interference signal from the second terminal according to the first indication information and/or the second indication information, including: and the first terminal determines interference signals from the K second terminals according to the first indication information and/or the second indication information, wherein the Q second terminals comprise the K second terminals, K is smaller than or equal to Q, and K, Q is a positive integer.

With reference to the first aspect, in certain implementation manners of the first aspect, the method further includes: and the first terminal determines the K second terminals from the Q second terminals according to the interference intensity and/or the number P of the terminals which support and simultaneously eliminate the interference from the plurality of terminals, wherein P is a positive integer, and K is smaller than or equal to P.

According to the scheme, the network device can provide the auxiliary information corresponding to the Q second terminals for the first terminal, and the first terminal can select part or all of the Q second terminals as interference terminals based on the measured interference intensity and/or the interference elimination capability of the first terminal, so as to determine the interference signals, thereby eliminating the inter-terminal interference in the downlink received signals.

With reference to the first aspect, in certain implementation manners of the first aspect, the method further includes: the first terminal receives first configuration information from the network device, the first configuration information being used to configure one or more candidate timing parameters, the first timing parameter being one of the one or more candidate timing parameters.

Illustratively, the first indication information includes an identification of the first timing parameter.

According to the above scheme, the network device may configure one or more timing parameters for the first terminal, and the first indication information only needs to include an identifier indicating the first timing parameter, so as to notify the first terminal of the timing parameter corresponding to the second terminal. The first indication information does not need to contain the timing parameter itself, so that the signaling overhead of the first indication information can be reduced.

With reference to the first aspect, in certain implementations of the first aspect, the first configuration information is RRC signaling, and the first indication information is medium access control MAC control element CE signaling, or downlink control information DCI.

With reference to the first aspect, in certain implementation manners of the first aspect, the second indication information is further used to indicate one or more of the following scheduling parameters:

time domain resource allocation parameters, frequency domain resource allocation parameters, transmission layer numbers, precoding parameters, modulation and coding modes or frequency hopping parameters.

According to the scheme, the auxiliary information provided by the network equipment for the first terminal comprises the scheduling parameter of the second terminal, so that the first terminal can acquire the signal from the second terminal based on the scheduling parameter.

With reference to the first aspect, in certain implementation manners of the first aspect, the method further includes: the first terminal receives second configuration information from the network device, wherein the second configuration information is used for configuring a candidate parameter set of at least one scheduling parameter, and a first scheduling parameter in the one or more scheduling parameters is one of the candidate parameter sets.

According to the scheme, the network device can configure the candidate parameter set of at least one scheduling parameter in a plurality of scheduling parameters for the first terminal, so that the network device can inform the first terminal of adopting the scheduling parameter by the second terminal in a mode that the second indication information comprises the identification of the candidate parameter of the scheduling parameter, the second indication information does not need to comprise the scheduling parameter, and the signaling overhead of the second indication information can be reduced.

In a second aspect, a communication method is provided, which may be performed by a network device or a module (e.g., a chip) configured in (or for) the network device. The following description will take a network device as an example.

The method comprises the following steps: the network equipment sends first indication information and/or second indication information to a first terminal, wherein the first indication information is used for indicating a first timing parameter, the second indication information is used for indicating a frequency hopping parameter, the timing parameter is used for acquiring time resource synchronization with a second terminal, and the frequency hopping parameter is a frequency hopping parameter adopted by a signal sent by the second terminal. The first indication information and the second indication information are used for eliminating signal interference between the first terminal and the second terminal by the first terminal.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the network device receives third indication information from the first terminal, wherein the third indication information is used for indicating the number P of terminals which are supported by the first terminal and eliminate interference from a plurality of terminals, the first indication information and the second indication information indicate parameters of Q second terminals, Q is smaller than or equal to P, and P, Q is a positive integer.

With reference to the second aspect, in some implementations of the second aspect, the third indication information is further used to indicate an interference cancellation mode of a downlink signal supported by the first terminal, where the interference cancellation mode includes a mode of canceling an interference signal from a terminal in the downlink signal.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the network device sends first configuration information to the first terminal, wherein the first configuration information is used for configuring one or more candidate timing parameters, and the first timing parameter is one of the one or more candidate timing parameters.

With reference to the second aspect, in some implementations of the second aspect, the first configuration information is RRC signaling, and the first indication information is medium access control MAC control element CE signaling, or downlink control information DCI.

With reference to the second aspect, in certain implementations of the second aspect, the second indication information is further used to indicate one or more of the following scheduling parameters:

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the network device sends second configuration information to the first terminal, wherein the second configuration information is used for configuring candidate parameter sets of at least one scheduling parameter, and a first scheduling parameter in the one or more scheduling parameters is one of the candidate parameter sets.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the network device receives third configuration information from the second network device, the third configuration information being for indicating one or more of:

The first timing parameter, the frequency hopping parameter, the scheduling parameter of the second terminal, the reference signal configuration information of the second terminal, the capability information of the second terminal or the subcarrier interval adopted by the second terminal.

In a third aspect, a communication apparatus is provided, where the apparatus may include modules, which may be hardware circuits, software, or a combination of hardware circuits and software, for performing the method/operation/step/action described in the first aspect or any implementation manner of the first aspect. In one design, the apparatus includes: the receiving and transmitting unit is used for receiving first indication information and/or second indication information from the network equipment, wherein the first indication information is used for indicating a first timing parameter, the second indication information is used for indicating a frequency hopping parameter, the first timing parameter is used for acquiring time resource synchronization with a second terminal, and the frequency hopping parameter is a frequency hopping parameter adopted by a signal sent by the second terminal. The first indication information and the second indication information are used for eliminating signal interference between the first terminal and the second terminal by the first terminal. Optionally, the apparatus further comprises a processing unit, where the processing unit is configured to determine the first timing parameter according to the first indication information, or the processing unit is configured to determine the frequency hopping parameter according to the second indication information.

With reference to the third aspect, in some implementations of the third aspect, the processing unit is further configured to determine an interference signal from the second terminal according to the first indication information and/or the second indication information. And the processing unit is further used for obtaining data in the first signal according to the interference signal and the first signal from the network equipment.

With reference to the third aspect, in some implementations of the third aspect, the transceiver unit is further configured to send third indication information to the network device, where the third indication information is used to indicate a number P of terminals that are supported by the first terminal and cancel interference from multiple terminals at the same time, and the first indication information and the second indication information indicate parameters of Q second terminals, Q is less than or equal to P, and P, Q is a positive integer. The processing unit is specifically configured to determine interference signals from the Q second terminals according to the first indication information and/or the second indication information.

With reference to the third aspect, in some implementations of the third aspect, the third indication information is further used to indicate an interference cancellation mode of a downlink signal supported by the first terminal, where the interference cancellation mode includes a mode of canceling an interference signal from a terminal in the downlink signal.

With reference to the third aspect, in some implementations of the third aspect, the first indication information and the second indication information indicate parameters of Q second terminals, and the processing unit is specifically configured to determine, according to the first indication information and/or the second indication information, interference signals from the K second terminals, where the Q second terminals include the K second terminals, and K is less than or equal to Q, and K, Q is a positive integer.

With reference to the third aspect, in some implementations of the third aspect, the processing unit is specifically configured to cancel, according to interference strength and/or support of the Q second terminals, a number P of terminals that simultaneously cancel interference from multiple terminals, where P is a positive integer and K is less than or equal to P.

With reference to the third aspect, in some implementations of the third aspect, the transceiver unit is specifically configured to receive first configuration information from the network device, where the first configuration information is used to configure one or more candidate timing parameters, and the first timing parameter is one of the one or more candidate timing parameters.

With reference to the third aspect, in some implementations of the third aspect, the first configuration information is RRC signaling, and the first indication information is medium access control MAC control element CE signaling, or downlink control information DCI.

With reference to the third aspect, in certain implementations of the third aspect, the second indication information is further used to indicate one or more of the following scheduling parameters:

With reference to the third aspect, in certain implementations of the third aspect, the transceiver unit is further configured to receive second configuration information from the network device, where the second configuration information is used to configure a candidate parameter set of at least one scheduling parameter, and a first scheduling parameter of the one or more scheduling parameters is one of the candidate parameter sets.

In a fourth aspect, a communications apparatus is provided, where the apparatus may include modules, which may be hardware circuitry, software, or a combination of hardware circuitry and software implementation, that perform the methods/operations/steps/actions described in any implementation manner in the second aspect. In one design, the apparatus includes: the processing unit is used for determining first indication information and/or second indication information, wherein the first indication information is used for indicating a first timing parameter, the second indication information is used for indicating a frequency hopping parameter, the timing parameter is used for acquiring time resource synchronization with a second terminal, and the frequency hopping parameter is a frequency hopping parameter adopted by a signal sent by the second terminal, and the first indication information and the second indication information are used for eliminating signal interference between the first terminal and the second terminal by the first terminal. And the receiving and transmitting unit is used for transmitting the first indication information and/or the second indication information to the first terminal.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is configured to receive third indication information from the first terminal, where the third indication information is used to indicate a number P of terminals supported by the first terminal and used to cancel interference from multiple terminals at the same time, the first indication information and the second indication information indicate parameters of Q second terminals, Q is less than or equal to P, and P, Q is a positive integer.

With reference to the fourth aspect, in some implementations of the fourth aspect, the third indication information is further used to indicate an interference cancellation mode of a downlink signal supported by the first terminal, where the interference cancellation mode includes a mode of canceling an interference signal from a terminal in the downlink signal.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is further configured to send first configuration information to the first terminal, where the first configuration information is used to configure one or more candidate timing parameters, and the first timing parameter is one of the one or more candidate timing parameters.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first configuration information is RRC signaling, and the first indication information is medium access control MAC control element CE signaling, or downlink control information DCI.

With reference to the fourth aspect, in some implementations of the fourth aspect, the second indication information is further used to indicate one or more of the following scheduling parameters:

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is further configured to send second configuration information to the first terminal, where the second configuration information is used to configure a candidate parameter set of at least one scheduling parameter, and a first scheduling parameter of the one or more scheduling parameters is one of the candidate parameter sets.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is further configured to receive third configuration information from the second network device, where the third configuration information is used to indicate one or more of:

In a fifth aspect, a communication device is provided that includes a processor. The processor may implement the method of the first or second aspect and any one of the possible implementation manners of the first or second aspect.

Optionally, the communications apparatus further comprises a memory, the processor being coupled to the memory and operable to execute instructions in the memory to implement the method of the first or second aspect and any one of the possible implementations of the first or second aspect.

Optionally, the communication device further comprises a communication interface, and the processor is coupled to the communication interface. In the embodiment of the present application, the communication interface may be a transceiver, a pin, a circuit, a bus, a module, or other types of communication interfaces, which are not limited.

In one implementation, the communication device is a communication device (e.g., a terminal device or an access network device). When the communication apparatus is a communication device, the communication interface may be a transceiver, or an input/output interface.

In another implementation, the communication apparatus is a chip configured in a communication device. When the communication device is a chip configured in a communication apparatus, the communication interface may be an input/output interface.

Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input/output interface may be an input/output circuit.

In a sixth aspect, there is provided a processor comprising: input circuit, output circuit and processing circuit. The processing circuitry is to receive signals via the input circuitry and to transmit signals via the output circuitry such that the processor performs the method of the first or second aspect and any one of the possible implementations of the first or second aspect.

In a specific implementation process, the processor may be one or more chips, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, various logic circuits, and the like. The input signal received by the input circuit may be received and input by, for example and without limitation, a receiver, the output signal may be output by, for example and without limitation, a transmitter and transmitted by a transmitter, and the input circuit and the output circuit may be the same circuit, which functions as the input circuit and the output circuit, respectively, at different times. The embodiment of the application does not limit the specific implementation modes of the processor and various circuits.

In a seventh aspect, there is provided a computer program product comprising: a computer program (which may also be referred to as code, or instructions) which, when executed, causes a computer to perform the method of the first or second aspect and any one of the possible implementations of the first or second aspect.

In an eighth aspect, a computer readable storage medium is provided, which stores a computer program (which may also be referred to as code, or instructions) which, when run on a computer, causes the computer to perform the method of the first or second aspect and any one of the possible implementations of the first or second aspect.

In a ninth aspect, there is provided a communication system comprising at least one communication device provided in the third aspect and at least one communication device provided in the fourth aspect. Optionally, the communication system further comprises at least one second terminal as described above.

Drawings

FIG. 1 is a schematic architectural diagram of a communication system suitable for use with embodiments of the present application;

fig. 2 is a schematic diagram of a CLI in TDD mode provided by the present application;

fig. 3 is a schematic diagram of uplink and downlink resources in SBFD mode provided in the present application;

FIG. 4 is a schematic diagram of a SBFD mode CLI provided by the present application;

FIG. 5 is a schematic flow chart of a communication method provided by the present application;

FIG. 6 is a schematic diagram of a format of a first indication provided by the present application;

FIG. 7 is another schematic diagram of the format of the first indication information provided by the present application;

FIG. 8 is a diagram showing the format of the second indication information provided by the present application;

FIG. 9 is another schematic flow chart diagram of a communication method provided by the present application;

FIG. 10 is a schematic block diagram of an example of a communication apparatus provided by an embodiment of the present application;

fig. 11 is a schematic configuration diagram of another example of a communication apparatus according to an embodiment of the present application.

Detailed Description

The technical scheme of the application will be described below with reference to the accompanying drawings.

In embodiments of the present application, "/" may indicate that the associated object is an "or" relationship, e.g., A/B may represent A or B; "and/or" may be used to describe that there are three relationships associated with an object, e.g., a and/or B, which may represent: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural. In order to facilitate description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", etc. may be used for distinction. The terms "first," "second," and the like do not necessarily denote any order of quantity or order of execution, nor do the terms "first," "second," and the like. In embodiments of the application, the words "exemplary" or "such as" are used to mean examples, illustrations, or descriptions, and any embodiment or design described as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. The use of the word "exemplary" or "such as" is intended to present the relevant concepts in a concrete fashion to facilitate understanding. In the embodiment of the present application, at least one (seed) may also be described as one (seed) or a plurality of (seed), and the plurality of (seed) may be two (seed), three (seed), four (seed) or more (seed), and the present application is not limited thereto.

Fig. 1 is a schematic diagram illustrating one possible, non-limiting system. As shown in fig. 1, the communication system 10 includes a radio access network (radio access network, RAN) 100 and a Core Network (CN) 200.RAN 100 includes at least one RAN node (e.g., 110a and 110b, collectively 110 in fig. 1) and at least one terminal (e.g., 120a-120j, collectively 120 in fig. 1). Other RAN nodes may also be included in the RAN 100, such as wireless relay devices and/or wireless backhaul devices (not shown in fig. 1), and the like. Terminal 120 is connected to RAN node 110 wirelessly. RAN node 110 is connected to core network 200 by wireless or wired means. The core network device in the core network 200 and the RAN node 110 in the RAN 100 may be different physical devices, or may be the same physical device integrated with the core network logic function and the radio access network logic function.

The RAN100 may be a third generation partnership project (3rd generation partnership project,3GPP) related cellular system, e.g., a 4G, 5G mobile communication system, or a future-oriented evolution system (e.g., a 6G mobile communication system). RAN100 may also be an open RAN, O-RAN or ORAN, a cloud radio access network (cloud radio access network, CRAN), or a wireless fidelity (WIRELESS FIDELITY, wiFi) system. RAN100 may also be a communication system in which two or more of the above systems are converged.

RAN node 110, which may also be referred to as an access network device, a RAN entity, or an access node, etc., forms part of a communication system to facilitate wireless access for terminals. The plurality of RAN nodes 110 in communication system 10 may be the same type of node or different types of nodes. In some scenarios, the roles of RAN node 110 and terminal 120 are relative, e.g., network element 120i in fig. 1 may be a helicopter or drone, which may be configured as a mobile base station, network element 120i being a base station for those terminals 120j that access RAN 100 through network element 120 i; but for base station 110a network element 120i is a terminal. RAN node 110 and terminal 120 are sometimes both referred to as communication devices, e.g., network elements 110a and 110b in fig. 1 may be understood as communication devices with base station functionality, and network elements 120a-120j may be understood as communication devices with terminal functionality.

In one possible scenario, the RAN node may be a base station (base station), an evolved NodeB (eNodeB), an Access Point (AP), a transmission and reception point (transmission reception point, TRP), a next generation NodeB (gNB), a next generation base station in a sixth generation (6th generation,6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc. The RAN node may be a macro base station (e.g., 110a in fig. 1), a micro base station or an indoor station (e.g., 110b in fig. 1), a relay node or a donor node, or a radio controller in a CRAN scenario. Alternatively, the RAN node may also be a server, a wearable device, a vehicle or an in-vehicle device, etc. For example, the access network device in the vehicle extrapolating (vehicle to everything, V2X) technology may be a Road Side Unit (RSU). All or part of the functionality of the RAN node in the present application may also be implemented by software functions running on hardware or by virtualized functions instantiated on a platform, such as a cloud platform. The RAN node in the present application may also be a logical node, a logical module or software capable of implementing all or part of the functions of the RAN node.

In another possible scenario, a plurality of RAN nodes cooperate to assist a terminal in implementing radio access, and different RAN nodes implement part of the functions of a base station, respectively. For example, the RAN node may be a Centralized Unit (CU), a Distributed Unit (DU), a CU-Control Plane (CP), a CU-User Plane (UP), or a Radio Unit (RU), etc. The CUs and DUs may be provided separately or may be included in the same network element, e.g. in a baseband unit (BBU). The RU may be included in a radio frequency device or unit, such as in a remote radio unit (remote radio unit, RRU), an active antenna processing unit (ACTIVE ANTENNA unit, AAU), or a remote radio head (remote radio head, RRH).

In different systems, CUs (or CU-CP and CU-UP), DUs or RUs may also have different names, but the meaning will be understood by those skilled in the art. For example, in ORAN systems, a CU may also be referred to as an O-CU (open CU), a DU may also be referred to as an O-DU, a CU-CP may also be referred to as an O-CU-CP, a CU-UP may also be referred to as an O-CU-UP, and a RU may also be referred to as an O-RU. For convenience of description, the present application is described by taking CU, CU-CP, CU-UP, DU and RU as examples. Any unit of CU (or CU-CP, CU-UP), DU and RU in the present application may be implemented by a software module, a hardware module, or a combination of software and hardware modules.

A terminal may also be referred to as a terminal device, user Equipment (UE), mobile station, mobile terminal, etc. The terminal may be widely applied to various scenes, for example, device-to-device (D2D), vehicle-to-device (vehicle to everything, V2X) communication, machine-type communication (MTC), internet of things (internet of things, IOT), virtual reality, augmented reality, industrial control, autopilot, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, and the like. The terminal can be a mobile phone, a tablet personal computer, a computer with a wireless receiving and transmitting function, a wearable device, a vehicle, an unmanned aerial vehicle, a helicopter, an airplane, a ship, a robot, a mechanical arm, intelligent household equipment and the like. The embodiment of the application does not limit the equipment form of the terminal.

It should be understood that "sending information/data to … (e.g., a terminal)" in the present application may be understood that the destination of the information is the terminal. May include directly or indirectly transmitting information/data to a terminal. "receiving information/data from … (e.g., a terminal)" is understood to mean that the source of the information is the terminal and may include receiving the information/data directly or indirectly from the terminal. Information/data may be subjected to necessary processing, such as format change, etc., between the source and destination of the information/data transmission, but the destination can understand the valid information/data from the source. Similar expressions in the present application can be understood similarly, and will not be described here again.

In the present application, "transmitting information/data" merely means the trend of information/data transfer, including direct transmission over an air interface, and also including indirect transmission by a processing unit over an air interface, "transmission" may also be understood as "output" of a chip interface. The term "receiving information/data" merely means the trend of information/data transmission, including direct reception via an air interface, and also including indirect reception via an air interface by a processing unit, where "receiving" is also understood as "inputting" to a chip interface.

It can be understood that, in the present application, the network device and the terminal are taken as the execution body of the interactive schematic for illustration, but the present application is not limited to the execution body of the interactive schematic. The network device may be a RAN node as described in the foregoing, or the network device may comprise one or more RAN nodes as described in the foregoing. The functions/steps performed by the network device in the method of the present application may be implemented by a module (e.g., a chip, a system on a chip, or a processor) applied to the network device, or may be implemented by a logic node, a logic module, or software capable of implementing all or part of the network device. The terminal in the method of the present application may also be a module (such as a chip, a system on a chip, or a processor) applied to the terminal, or may be a logic node, a logic module, or software capable of implementing all or part of the functions of the terminal.

The following is a description of related art and terms related to the embodiments of the present application.

1. CLI of TDD mode

In the TDD mode, the center frequency points of the uplink bandwidth and the downlink bandwidth are the same, and the uplink signal and the downlink signal are transmitted at different times. In a mobile communication system, a network device configures a frame format for a terminal, so that the network device and the terminal can agree on an uplink resource for carrying uplink signals and a downlink resource for carrying downlink signals in communication resources.

For terminals with similar distances and different uplink and downlink resource configurations, when one terminal receives a downlink signal, if another terminal is sending an uplink signal, the uplink signal of the terminal may cause interference to the terminal receiving the downlink signal, where the interference may be called CLI between the terminals.

For example, as shown in fig. 2, time slots 0 to 2 of the network device 1 and the terminal 1 are downlink time slots, time slot 3 is a flexible time slot, the flexible time slot may include a time interval for uplink/downlink conversion, and the flexible time slot may further include downlink resources and/or uplink resources, and time slot 4 is an uplink time slot. If the terminal 1 is at the edge of the cell of the network device 1, there is a terminal 2 at the cell edge of the network device 2 near the terminal, the time slot 0 of the network device 2 and the terminal 2 is a downlink time slot, the time slot 1 is a flexible time slot, and the time slots 2 to 4 are uplink time slots. If the network device 1 sends a downlink signal to the terminal 1 in the time slot 2, and at this time, the terminal 2 sends an uplink signal to the network device 2 in the time slot 2, the uplink signal sent by the terminal 2 will cause interference to the downlink signal of the terminal 1, specifically, when the terminal receives the downlink signal, the terminal may simultaneously receive the uplink signal sent by the terminal 2, and since the terminal 1 is at the cell edge, the downlink signal strength is weaker, and the probability of success of decoding the downlink signal by the terminal 1 will be reduced by the interference of the uplink signal of the terminal 2.

2. SBFD CLI mode

Since uplink transmission and downlink transmission cannot be simultaneously performed in the TDD mode, this causes an increase in transmission delay. In order to solve the time delay problem of the TDD mode, a SBFD mode is currently discussed, for example, as shown in fig. 3, in the mode, a part of subbands in a frequency domain in a part of time domain resources (such as a part of symbols or a part of time slots) are configured as uplink resources, and a part of subbands are configured as downlink resources, so that uplink and downlink can be performed between a terminal and a network device in different subbands at the same time.

As shown in fig. 4, for a terminal adopting the SBFD mode, signal leakage occurs in an adjacent downlink self-band during uplink transmission on one uplink sub-band, so that interference between sub-bands of signals of different terminals may occur, and the interference may be called CLI between terminals.

At present, interference between terminals can be avoided through a cooperative scheduling mode aiming at the CLI between the terminals, specifically, when two terminals with interference perform downlink transmission on the interfered terminals, uplink transmission on the interfered terminals is not scheduled, so that interference avoidance is realized. However, this method has a certain degree of system resource waste, and has a high difficulty in rapid scheduling, and affects uplink transmission timeliness of the interfering terminal. In addition, interference isolation can be achieved by adjusting the beam direction of the interfered terminal and the interfering terminal. For example, an interfered terminal or an interfering terminal may be scheduled not to use the best beam that generated the interference for signal transmission. This approach will affect the signal transmission performance, reduce the reliability of signal transmission, and make it difficult or impossible to implement for terminals with limited beamforming capability (e.g., terminals with fewer antennas).

The embodiment of the application provides the network equipment for providing the auxiliary information for the interfered terminal, so that the interfered terminal can reconstruct the interference signal of the interfered terminal based on the auxiliary information, the interference signal of the interfered terminal is eliminated in the downlink signal, the CLI elimination mode between the terminals can be realized under the condition that the interference terminal does not need to be inhibited from sending the uplink signal, and the resource utilization rate can be improved.

Fig. 5 is a schematic flow chart of a communication method 500 provided by an embodiment of the present application. In the method 500, the first terminal is an interfered terminal, the second terminal is an interfering terminal, and the network device is a network device for establishing a communication connection with the first terminal. The method 500 includes, but is not limited to, the steps of:

S501, the network device sends first indication information and/or second indication information to the first terminal, wherein the first indication information is used for indicating a first timing parameter, the first timing parameter is used for acquiring time resource synchronization with the second terminal, the second indication information is used for indicating a frequency hopping parameter, the frequency hopping parameter is a frequency hopping parameter adopted by a signal sent by the second terminal, and the first indication information and/or the second indication information is used for eliminating signal interference between the first terminal and the second terminal.

The network device provides a first timing parameter for the first terminal through the first indication information, and the first terminal can acquire time resource synchronization with the second terminal based on the first timing parameter. The two communication devices have transmission delay due to the influence of the distance, the synchronization of time resources is completed between the first terminal and the network device based on the reference signal and the information interaction, and the first terminal needs to receive signals (such as the reference signal, the data signal and the like) from the second terminal for the reconstruction of the interference signal of the second terminal, so that the first terminal needs to acquire the synchronization of the time resources with the second terminal, namely, the first terminal needs to acquire the symbol time sequence of the communication resources of the second terminal, so that the receiving time of the signals of the second terminal can be accurately received.

The first indication information may be, for example, a medium access control (medium access control, MAC) Control Element (CE) signaling, or a radio resource control (radio resource control, RRC) message.

The first indication information may include an Identification (ID) of the second terminal and the first timing parameter.

In one example, the first indication information is MAC CE signaling in which the ID of the terminal may be 2 bytes and the first timing parameter may be 6 bytes. Optionally, the first indication information may indicate timing parameters of one or more second terminals, for example, the first indication information indicates timing parameters of Q second terminals, Q is a positive integer, and the format of the MAC CE signaling may be as shown in fig. 6, where the terminal is taken as an example of the UE, and each 2 bytes of UE ID corresponds to one 6 bytes of timing parameters.

In another example, the first indication information is MAC CE signaling in which the ID of the terminal may be 4 bytes and the first timing parameter may be 12 bytes. Alternatively, the first indication information may indicate the timing parameters of Q second terminals, and the format of the MAC CE signaling may be as shown in fig. 7, where the terminal is taken as an example of the UE, and each 4 bytes of UE ID corresponds to one 12 bytes of timing parameters.

In one embodiment, a network device sends first configuration information to a terminal, the first configuration information being used to configure one or more candidate timing parameters, the first timing parameter being one of the one or more candidate timing parameters.

Illustratively, the first configuration information is an RRC message, and the first indication information is MAC CE signaling or downlink control information (downlink control information, DCI).

For example, the network device may configure one or more candidate timing parameters for the terminal through the first configuration information, where each candidate timing parameter corresponds to an identifier, and the network device sends first indication information, where the first indication information includes an identifier of the second terminal and an identifier of the first timing parameter. The first terminal can determine that the timing parameter corresponding to the second terminal is the first timing parameter in the candidate timing parameters configured by the first configuration information according to the first indication information.

For another example, the network device may configure, via the first configuration information, an identifier of one second terminal for each of the one or more candidate timing parameters, i.e., the first configuration information configures the timing parameters of the one or more second terminals. The first indication information may include an identifier of the second terminal, and the first terminal may determine a timing parameter of the second terminal according to the first configuration information and the identifier of the second terminal indicated by the first indication information. Or the first configuration information is further configured with an identifier of each candidate timing parameter, the first indication information may include an identifier of the candidate timing parameter, the first terminal may determine that the candidate timing parameter is the first candidate timing parameter according to the first configuration information and the identifier of the candidate timing parameter indicated by the first indication information, and the first timing parameter is the timing parameter of the second terminal.

In one embodiment, the first timing parameter may be a time advance (TIME ADVANCE, TA) parameter.

For example, the TA parameter may represent a duration of advance of the uplink resource of the second terminal compared to the downlink resource of the first terminal. Or the TA parameter may represent a duration of advance of the downlink resource of the first terminal compared to the downlink resource of the second terminal. The value of the TA parameter may be negative.

After the first terminal obtains the TA parameter (i.e., the first timing parameter) corresponding to the second terminal indicated by the first indication information, the first terminal can determine time resource synchronization with the second terminal according to the downlink resource of the first terminal, so that when the signal is sent by the second terminal, the first terminal can receive the signal from the second terminal on the resource carrying the signal in the time resource of the second terminal based on the resource allocation parameter of the signal. So that the first terminal can reconstruct the interference signal of the second terminal, so as to reduce the interference of the interference signal of the second terminal to the downlink signal of the first terminal.

The network device may be configured to indicate, through the second indication information, a frequency hopping parameter, where the frequency hopping parameter specifically indicates that the second terminal uses a frequency hopping manner or does not use a frequency hopping manner when sending a signal. The network device may not indicate the frequency hopping parameter to the first terminal, and the first terminal may determine, based on a predefined manner, that the second terminal does not adopt the frequency hopping manner or adopts the frequency hopping manner when transmitting the signal by default in the case that the frequency hopping parameter is not acquired from the network device.

In one embodiment, the second indication information is used to indicate one or more of the following scheduling parameters:

frequency hopping parameters, time domain resource allocation parameters, frequency domain resource allocation parameters, number of transmission layers, precoding parameters, or modulation and coding scheme (modulation and coding scheme, MCS).

The first terminal may receive the signal transmitted by the second terminal based on the scheduling parameter of the second indication information, so that the first terminal reconstructs an interference signal from the second terminal based on the received signal from the second terminal.

The second indication information may be, for example, an RRC message, MAC CE signaling, or DCI.

For example, the second indication information may be DCI, which may be uplink grant (UL grant) DCI of the second terminal, i.e., DCI for scheduling a Physical Uplink Shared Channel (PUSCH) of the second terminal. The second terminal may send a signal based on the uplink grant DCI, e.g., send uplink data on PUSCH resources indicated by the DCI. The network device may send the uplink grant DCI of the second terminal to the first terminal, so that the first terminal may receive the signal sent by the second terminal based on the uplink grant DCI. If the uplink grant DCI may include a time domain resource allocation parameter and a frequency domain resource allocation parameter, the second terminal may determine a time domain resource and a frequency domain resource of a PUSCH according to the uplink grant DCI, and the second terminal may send a signal on the PUSCH, and correspondingly, the first terminal may determine the time domain resource and the frequency domain resource where the PUSCH is located based on the uplink grant DCI, and receive a signal from the second terminal on the PUSCH. The uplink grant DCI may further include one or more parameters of a transmission layer number, a precoding parameter, an MCS, and the like, and the second terminal may perform coding, modulation, and the like based on the uplink grant DCI, and accordingly, the first terminal may demodulate, decode, and the like an acquired signal from the second terminal based on the uplink grant DCI.

In one embodiment, the network device sends second configuration information to the terminal device, where the second configuration information is used to configure a candidate parameter set of at least one scheduling parameter, and a first scheduling parameter in the scheduling parameters indicated by the second indication information is one parameter in one candidate parameter set.

The second configuration information may configure a candidate parameter set of time domain resource allocation parameters, the candidate parameter set including a plurality of candidate time domain resource parameters, such as time domain resource allocation parameter 0, time domain resource allocation parameter 1, time domain resource allocation parameter 3, and the like. The second indication information informs the first terminal of the time domain resource allocation parameter of the second terminal by indicating the identifier of one candidate time domain resource allocation parameter in the candidate parameter set, for example, the second indication information indicates that the identifier is the identifier of the time domain resource allocation parameter 1, and the first terminal can determine that the time domain resource allocation parameter of the second terminal is the time domain resource allocation parameter 1 according to the identifier of the time domain resource allocation parameter indicated by the second indication information.

The second configuration information may configure a candidate parameter set of one or more scheduling parameters of the frequency hopping parameter, the time domain resource allocation parameter, the frequency domain resource allocation parameter, the transmission layer number, the precoding parameter, the MCS or the frequency hopping parameter, and instruct, through the second indication information, an identifier of a parameter in the corresponding candidate parameter set to notify the first terminal of a parameter adopted by the second terminal. The specific embodiments may refer to the configuration and indication manners of the foregoing time domain resource allocation parameters, which are not described herein.

If the second configuration information does not configure the candidate parameter set of one of the scheduling parameters, the network device can directly indicate the scheduling parameter through the second indication information. For example, the second configuration information may not configure the candidate parameter set of the number of transmission layers, and the network device may directly indicate the number of transmission layers adopted by the second terminal through the second indication information.

If the candidate parameter set of one scheduling parameter configured by the second configuration information only includes one parameter, the second indication information may indicate the scheduling parameter, and the first terminal defaults to the scheduling parameter configured by the second terminal using the second configuration information. For example, if the second configuration information configures the frequency hopping parameter to not adopt the frequency hopping mode, the second indication information sent by the network device may not indicate the frequency hopping parameter, and the first terminal may determine, based on the second configuration information, that the signal sent by the second terminal does not adopt the frequency hopping mode.

Alternatively, the maximum number of candidate parameters included in the candidate resource set of scheduling parameters configured by the second configuration information may be specified.

For example, it may be provided that the maximum number of candidate parameters in the candidate set of time domain resource allocation parameters configured by the second configuration information is 8. The second indication information may indicate one of the 8 candidate parameters through 3 bits. Or the maximum number of candidate parameters of the time domain resource allocation parameter may be configured to be 4, and the second indication information may indicate one of the 4 candidate parameters by 2 bits. The number of candidate parameters for the frequency domain resource allocation parameters that the network device can configure for the terminal to use in the current system is 16. It may be provided that the maximum number of time domain resource allocation parameters configured by the network device for the terminal for determining the inter-terminal interference signal is less than 16 to reduce the overhead of the second indication information.

It may be specified that the second configuration information configures a frequency domain resource allocation parameter that allocates PRBs near the center of an uplink sub-band (UL subband) of type 1 (type 1), and the second indication information may indicate one of candidate parameters of the frequency domain resource allocation parameter by 8 bits.

It may be specified that the second configuration information configures at most two transmission layers, for example, a candidate parameter of the transmission layer is 1 or 2, and the second indication information may be configured by one of 2 candidate parameters of the transmission layer configured by the 1-bit second configuration information.

The second configuration information may specify that at most 4 candidate parameters when the number of transmission layers is 1 and 4 candidate parameters when the number of transmission layers is 2 are included in the candidate set in which the precoding parameters can be configured. The second indication information may indicate one of 8 candidate parameters of the precoding parameter configured by the second configuration information through 3 bits.

It may be specified that the second configuration information may configure at most 2 MCSs corresponding to Quadrature Phase Shift Keying (QPSK) and 2 MCSs corresponding to 16-quadrature amplitude modulation (quadrature amplitude modulation QAM), and the second indication information may indicate one of 4 candidate parameters of the MCS configured by the second configuration information by 2 bits.

In one example, the second configuration information may be an RRC message and the second indication information may be MAC CE signaling.

For example, the second indication information specifically indicates the scheduling parameters of Q second terminals, where the format of the second indication information when the second indication information is MAC CE signaling may be as shown in fig. 8, and in the MAC CE, the UE ID of each UE is 2 bits, and each UE ID corresponds to a 3-bit time domain resource allocation parameter, a 1-bit transmission layer number parameter (or referred to as Rank Indicator (RI)), a 2-bit MCS, and an 8-bit frequency domain resource allocation parameter, which are taken as examples of the terminal. Optionally, the network device configures a candidate value of the frequency hopping parameter through an RRC message, and the first terminal may determine whether the signal sent by each second terminal adopts a frequency hopping manner based on the RRC message. But the application is not limited thereto.

In another example, the second configuration information may be an RRC message and the second indication information may be DCI.

For example, the DCI as the second indication information may be DCI of a currently defined DCI format, and the scheduling parameters of the second terminal may be indicated using reserved bits in the DCI of the format. For example, the DCI may include an identifier of a candidate parameter in a candidate parameter set of one or more scheduling parameters configured by the network device through an RRC message, so that the first terminal may determine, according to the RRC message and the identifier of the scheduling parameter in the DCI, a scheduling parameter adopted by the second terminal, so as to receive a signal from the second terminal based on the scheduling parameter, thereby determining an interference signal of the second terminal.

For another example, the DCI may be a DCI of a newly defined DCI format, e.g., the DCI format may be a DCI format for indicating a scheduling parameter of an interfering terminal (or an interfering signal for determining the interfering terminal). Similarly, the DCI may include an identifier of a candidate parameter in a candidate parameter set of one or more scheduling parameters configured by the network device through the RRC message, so that the first terminal may determine, according to the RRC message and the identifier of the scheduling parameter in the DCI, a scheduling parameter adopted by the second terminal, thereby receiving a signal from the second terminal based on the scheduling parameter, to determine an interference signal of the second terminal.

In one embodiment, the network device sends fourth configuration information to the first terminal, where the fourth configuration information is used to configure a reference signal resource of the second terminal, where the reference signal resource is used for the first terminal to obtain channel information between the first terminal and the second terminal.

In one example, after receiving the fourth configuration information, the first terminal determines a reference signal resource of the second terminal, receives a reference signal on the reference signal resource, and performs channel estimation to obtain channel information between the first terminal and the second terminal, where the channel information is used to recover a received signal from the second terminal, so as to determine an interference signal of the second terminal.

In another example, the network device may configure one or more candidate reference signal resources of the second terminal with fourth configuration information, and the network device further transmits fourth indication information to the terminal, where the fourth indication information is used to indicate one of the one or more reference signal resources. After the first terminal receives the fourth indication information, the first terminal can receive the reference signal on the reference signal resource indicated by the fourth indication information, and perform channel estimation to obtain the channel information between the first terminal and the second terminal. So that the first terminal recovers the received signal from the second terminal based on the channel information to determine an interference signal of the second terminal.

Alternatively, the maximum number of reference signal resources of the second terminal configured by the fourth configuration information may be specified. The maximum data amount may be determined based on the number of terminals P that are supported by the first terminal while canceling interference from the plurality of terminals, the maximum data amount being less than or equal to P.

The reference signal resource may be a Sounding REFERENCE SIGNAL (SRS) resource or a demodulation reference signal (demodulation REFERENCE SIGNAL, DMRS) resource.

For example, the reference signal resource is a DMRS resource, the fourth configuration information is referred to as DMRS uplink configuration of CLI, and if it may be referred to as DMRS-UplinkConfig-CLI, the fourth configuration information format may be expressed as follows:

The fourth configuration information indicates the ID of the DMRS resource (i.e., DMRS-resourceId) through DMRS-resourceId, and the configuration parameters after DMRS-resourceId are configured by the configuration parameters corresponding to the ID of the DMRS resource. The fourth configuration information may indicate that IDs of different DMRS resources configure configuration parameters of a plurality of DMRS resources through DMRS-resourceId. The DMRS-resourceId can be expressed as follows:

DMRS-resourceId::＝INTEGER(0..maxCLICancellerNum-1)

Wherein maxCLICancellerNum is the maximum number of DMRS resources, and the maxCLICancellerNum is less than or equal to P. The format of the fourth configuration information may further include Type indication information DMRS-Type of the DMRS resource, where the Type indication information is used to indicate that the Type of the DMRS resource is Type2 (Type 2), and if the fourth configuration information does not include the Type indication information, the Type of the DMRS resource is Type 1. The fourth configuration information may further include location indication information DMRS-AdditionalPosition attached to the DMRS, where the location indication information indicates one of the predefined DMRS locations corresponding to pos0, pos1, and pos 3. The format of the fourth configuration information further includes maximum length indication information maxLength, which is used for indicating that the maximum length of the DMRS resource is 2, that is, two symbols. If the fourth configuration information does not include the maximum length indication information, the maximum length of the DMRS resource is 1. The fourth configuration information may further include precoding transition disable indication information transformPrecodingDisabled or precoding transition enable indication information transformPrecodingEnabled, and if the fourth configuration information includes transformPrecodingDisabled, the fourth configuration information further configures two winding IDs, namely scramblingID0 and scramblingID1. If the fourth configuration information includes transformPrecodingEnabled, the fourth configuration information configures the number of PUSCH identifiers only through nPUSCH-Identity. And indicates whether group hopping is performed by whether or not sequenceGroupHopping is present, and indicates whether or not hopping is performed by whether or not sequenceHopping is present.

In one embodiment, before S501, the network device may send fifth configuration information to the first terminal, where the fifth configuration information is used to configure the first terminal to perform CLI measurement. The first terminal measures the interference strength, otherwise known as CLI strength, of one or more terminals based on this fifth configuration information from the network device.

Specifically, the fifth configuration information may configure reference signal resources for measuring interference intensity of one or more terminals, and the first terminal measures the reference signal resources configured by the fifth configuration information to obtain the interference intensity of the one or more terminals. The interference strength may be, for example, a reference signal received power (REFERENCE SIGNAL RECEIVE power, RSRP).

The fourth configuration information and the fifth configuration information may be the same configuration information, i.e., the first terminal may acquire channel information between the first terminal and the second terminal based on the reference signal resource for measuring the interference strength. Or the fourth configuration information and the fifth configuration information may be different configuration information, which are used for configuring reference signal resources for acquiring channel information and reference signal resources for measuring interference strength, respectively.

After the first terminal measures the interference intensity of one or more terminals, a measurement result may be reported to the network device, where the measurement result may include the identifiers and the interference intensities of all the terminals measured by the first terminal. Or the measurement may include an interference strength greater than or equal to a threshold and an identification of the corresponding terminal.

The network device may determine Q second terminals based on the measurement result reported by the first terminal, and send auxiliary information for determining interference signals of the Q second terminals to the first terminal, where the auxiliary information includes first indication information and/or second indication information in the foregoing, and the auxiliary information may further include one or more of first configuration information, second configuration information, fourth indication information, or fourth configuration information in the foregoing.

In one embodiment, the first terminal sends third indication information to the network device, where the third indication information is used to indicate an interference cancellation mode of the downlink signal supported by the first terminal, and the interference cancellation mode includes a mode of canceling an interference signal from the terminal in the downlink signal.

And the network equipment determines that the first terminal supports an interference elimination mode of eliminating interference signals from the terminal in the downlink signals according to the third indication information, and then the network equipment sends auxiliary information for determining the interference signals of the Q second terminals to the first terminal.

Optionally, the third indication information is further used to indicate the number of terminals P supported by the first terminal and simultaneously eliminating interference from the plurality of terminals, where P is greater than or equal to Q, and P is a positive integer.

The network device may determine Q second terminals according to the number P indicated by the third indication information, and transmit auxiliary information for determining interference signals of the Q second terminals to the first terminal.

For example, the network device may determine, according to the interference strength of one or more terminals in the measurement result reported by the first terminal, that the terminal with the greatest interference strength is the second terminal, i.e. q=1, and the network device sends, to the first terminal, auxiliary information for determining an interference signal of the second terminal.

For another example, the network device may determine Q second terminals according to the interference intensity of one or more terminals in the measurement result reported by the first terminal and the number P of terminals supporting interference cancellation reported by the terminals, where Q is greater than or equal to 1 and less than P, and the network device sends auxiliary information for determining interference signals of the Q second terminals to the first terminal. The terminal device determines interference signals from the Q second terminals in S502 based on the auxiliary information corresponding to the Q second terminals in S502, so as to reduce interference from the terminals in the downlink signal.

In another embodiment, the network device may determine Q second terminals based on the measurement result reported by the first terminal, and send auxiliary information for determining interference signals of the Q second terminals to the first terminal. And the first terminal determines K second terminals in the Q second terminals according to the measurement result of the interference intensity, wherein K is a positive integer smaller than or equal to Q. The first terminal determines interference signals from the K second terminals in S502 based on the auxiliary information corresponding to the K second terminals.

Optionally, S502, the first terminal determines an interference signal from the second terminal according to the first indication information and/or the second indication information.

The first terminal can acquire time resource synchronization with the second terminal according to the first indication information.

The first terminal may receive a reference signal from the second terminal on a reference signal resource of the second terminal, and perform channel estimation based on the reference signal to obtain channel information H _UE-UE. Specifically, the first terminal may complete channel estimation using a channel estimation algorithm such as discrete fourier transform (discrete fourier transform, DFT) or minimum mean square error (minimum mean square error, MMSE) to obtain the channel information H _UE-UE.

And the first terminal may receive the second signal from the second terminal based on the scheduling parameter of the second terminal. The manner in which the first terminal acquires the scheduling parameters of the second terminal may be implemented based on the description in S502. Or the first terminal may receive the second configuration information from the network device, obtain a candidate parameter set of the scheduling parameters, and blindly estimate the scheduling parameters adopted by the second terminal based on the candidate parameter set, thereby receiving the second signal from the second terminal. Alternatively, the second signal may be a signal carried on PUSCH of the second terminal.

After the first terminal receives the second signal from the second terminal, the first terminal may demodulate the second signal of the second terminal by using a demodulation algorithm such as MMSE or QR decomposition and M algorithm (QR decomposition and M-algorithm, QRM) to obtain data x _I-UE of the second terminal.

If the reference signal resource of the channel information acquired by the first terminal is the SRS resource, the first terminal may determine the interference signal I _UE-UE of the second terminal based on the channel information, the precoding parameter (i.e., the precoding parameter that the auxiliary information needs to indicate to the second terminal) and the data of the second terminal. The interference signal I _UE-UE can be expressed as:

I_UE-UE＝H_UE-UE*P*x_I-UE.

Wherein P is a precoding matrix indicated by the precoding parameter.

If the reference signal resource of the first terminal for obtaining the channel information is the DMRS resource, the first terminal may determine the interference signal I _UE-UE of the second terminal based on the channel information and the data of the second terminal. The interference signal I _UE-UE can be expressed as:

If the first terminal determines that M interference signals of the second terminals are equal to Q or M is equal to K, the first terminal may determine the interference signal I _{UE-UE i} of each second terminal I in the manner described above, and the first terminal may obtain the total interference signal from the terminals, that is, the total sum I _UE-UE of the interference signals of the M second terminals. The interference signal I _UE-UE can be expressed as:

Optionally, S503, the first terminal obtains data in the first signal according to the interference signal of the second terminal and the first signal from the network device.

The first terminal receives the first signal from the network device, and obtains a received signal Y, which may be expressed as follows:

Y＝H_DL*x_DL+I+N

Wherein x _DL is a first signal sent by the network device to the first terminal, where the first signal includes downlink data, H _DL is channel information between the network device and the first terminal, N is noise, I is an interference signal, and since there is CLI of at least one second terminal to the first terminal, the interference signal I includes a sum I _UE-UE of interference signals from the at least one second terminal. The first terminal obtains Y 'after the received signal Y eliminates the inter-terminal interference I _UE-UE, reduces the interference in the received signal, and obtains downlink data in the first signal sent to the terminal by the network equipment after demodulating the Y'.

According to the scheme, the first terminal acquires the auxiliary information from the network equipment, so that the first terminal can reconstruct the interference signal from the second terminal based on the auxiliary information, the first terminal can reduce the interference of signals sent by other terminals to downlink signals, and the reliability of downlink transmission is improved.

In the embodiment shown in fig. 5, the at least one second terminal may include a second terminal that establishes a communication connection with the network device, that is, the second terminal is connected to the first terminal by the same network device, or the network device that provides a communication service for the second terminal and the first terminal is the same network device, and the auxiliary information provided by the network device for the first terminal to determine the interference signal of the second terminal may be determined by the network device based on a service requirement of the second terminal and so on.

The at least one second terminal may comprise a second terminal that establishes a communication connection with the other network device, the second terminal being connected to the first terminal not being the same network device, e.g. the first terminal and the second terminal being located in two adjacent cells managed by different network devices. The serving network apparatus of the first terminal (denoted as first network apparatus) may acquire auxiliary information for determining an interference signal of the second terminal from the serving network apparatus of the second terminal, and transmit the auxiliary information to the first terminal.

Fig. 9 is a schematic diagram of a communication method 900 according to an embodiment of the present application. It should be appreciated that the same parts of the method 900 as those of the method 500 shown in fig. 5 may be implemented with reference to the foregoing description, and will not be repeated here.

S901, the first terminal sends CLI measurement results to the first network device.

Accordingly, the first network device receives CLI measurement results from the first terminal, which measurement results may include interference strength of at least one terminal measured by the first terminal, the at least one terminal including the second terminal.

S902, the first terminal sends capability information to the first network device.

Accordingly, the first network device receives the capability information from the first terminal. The capability information includes the third indication information described in the foregoing. I.e. the capability information is used to indicate the interference cancellation mode of the downlink signal supported by the first terminal, which includes the mode of canceling the interference signal from the terminal in the downlink signal. Optionally, the capability information is further used to indicate the number of terminals P supported by the first terminal that cancel interference from multiple terminals at the same time.

It should be understood that the present application is not limited to the order of execution between S901 and S902, and the first terminal may execute S902 before S901.

S903, the first network device and the second network device perform information interaction on the cell level configuration information and/or the terminal level configuration information.

The cell level configuration information may include, but is not limited to, one or more of the following:

cell frame structure configuration information, cell-level time advance TA information, or subcarrier spacing employed by frequency domain resources of a cell.

The terminal level configuration information includes, but is not limited to, one or more of the following:

The method comprises the steps of a CLI measurement result of a terminal, capability information of the terminal, time advance TA information of the terminal, reference signal resource allocation information of the terminal and part or all of uplink scheduling parameters of the terminal.

For example, the first network device receives third configuration information from the second network device, the third configuration information being used to instruct the second terminal to one or more of:

Timing parameters, frequency hopping parameters, scheduling parameters, reference signal resource configuration information, capability information, or subcarrier spacing.

The first network device may determine auxiliary information corresponding to the second terminal provided for the first terminal through interaction of the configuration information with the second network device, and the auxiliary information is used for the first terminal to determine an interference signal from the second terminal. The auxiliary information includes the first indication information and/or the second indication information described in the foregoing. Optionally, the auxiliary information further includes, but is not limited to, first configuration information, second configuration information, fourth indication information, or fourth configuration information.

And S904, the first network equipment sends auxiliary information corresponding to the second terminal to the first terminal.

Accordingly, the first terminal receives the assistance information from the first network device.

S905, the first network device sends downlink scheduling information to the first terminal.

S906, the second network device sends uplink scheduling information to the second terminal.

It should be understood that, the present application does not limit the sequence of sending the downlink scheduling information by the first network device and sending the uplink scheduling information by the second network device, and the second network device may send the uplink scheduling information before the first network device sends the downlink scheduling information.

S907, the first network device sends a downlink signal to the first terminal on PDSCH, and the second terminal sends an uplink signal to the second network device on PUSCH.

When the first terminal receives the downlink signal from the first network device on the PDSCH, the second terminal transmits an uplink signal to the second network device on the PUSCH, where the uplink signal causes interference to the downlink signal received by the first terminal. The received signal of the first terminal includes an interference signal from the second terminal.

S908, the first terminal determines an interference signal from the second terminal according to the auxiliary information.

The first terminal receives the signal from the second terminal according to the auxiliary information, and reconstructs an interference signal from the second terminal according to the signal of the second terminal to determine the interference signal from the second terminal.

S909, the first terminal obtains downlink data in the downlink signal according to the interference signal of the second terminal and the received signal obtained by receiving the downlink signal.

The first terminal eliminates the interference signal contained in the received signal according to the interference signal from the second terminal determined by the first terminal, and can improve the signal-to-interference-plus-noise ratio (signal to interference plus noise ratio, SINR) of the received signal, and improve the probability of successful demodulation of the received signal by the terminal, thereby improving the reliability of downlink transmission.

It will be appreciated that, in order to implement the functions in the above embodiments, the base station and the terminal include corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and method steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application scenario and design constraints imposed on the solution.

Fig. 10 and 11 are schematic structural diagrams of a possible communication device according to an embodiment of the present application. These communication apparatuses may be used to implement the functions of the terminal (e.g., the first terminal or the second terminal) or the network device (e.g., the first network device or the second network device) in the above method embodiments, so that the beneficial effects of the above method embodiments can also be implemented. In an embodiment of the present application, when the communication device is used to implement the functions of the terminal in the above-described method embodiment, the communication device may be one of the terminals 120a-120j as shown in fig. 1. When the communication device is used to implement the functions of the network device in the above method embodiment, the communication device may be a RAN node 110a or 110b as shown in fig. 1, or may be a module (such as a chip or a chip system) applied to a terminal or a network device.

The communication device 1000 comprises a transceiver unit 1020, which transceiver unit 1020 may be used for receiving or transmitting information, and the communication device 1000 may further comprise a processing unit 1010, which processing unit 1010 may be used for processing instructions or data for performing corresponding operations.

It should be understood that when the communication apparatus 1000 is a chip configured in (or used in) a communication device, the transceiver unit 1020 in the communication apparatus 1000 may be an input/output interface or a circuit of the chip, and the processing unit 1010 in the communication apparatus 1000 may be a processor in the chip.

Optionally, the communication device 1000 may further include a storage unit, where the storage unit may be used to store instructions or data, and the processing unit 1010 may execute the instructions or data stored in the storage unit, so that the communication device performs a corresponding operation.

The communication device 1000 may be used to implement the functions of the terminal in the above-described method embodiments. When the communication apparatus 1000 is used to implement the terminal functions in the above-described method embodiment: the transceiver 1020 is configured to receive first indication information and/or second indication information from a network device, where the first indication information is used to indicate a first timing parameter, the second indication information is used to indicate a frequency hopping parameter, the first timing parameter is used to acquire time resource synchronization with a second terminal, and the frequency hopping parameter is a frequency hopping parameter adopted by a signal sent by the second terminal, and the first indication information and the second indication information are used by a first terminal to eliminate signal interference between the first terminal and the second terminal. The processing unit 1010 is configured to determine the first timing parameter according to the first indication information and/or determine the frequency hopping parameter according to the second indication information.

The communication apparatus 1000 may be configured to implement the functions of the network device in the above-described method embodiment. When the communication apparatus 1000 is used to implement the functions of the network device in the above-described method embodiment: the processing unit 1010 is configured to determine first indication information and/or second indication information, where the first indication information is used to indicate a first timing parameter, the second indication information is used to indicate a frequency hopping parameter, the timing parameter is used to acquire time resource synchronization with a second terminal, and the frequency hopping parameter is a frequency hopping parameter adopted by a signal sent by the second terminal, and the first indication information and the second indication information are used by a first terminal to eliminate signal interference between the first terminal and the second terminal. The transceiver unit 1020 is configured to send the first indication information and/or the second indication information to the first terminal.

For more details on the processing unit 1010 and the transceiver unit 1020, reference is made to the relevant description of the method embodiments described above.

It should be appreciated that the transceiver unit 1020 in the communication device 1000 may be implemented by a communication interface (e.g., the communication interface may be a transceiver, transceiver circuitry, an input/output interface, pins, etc.), and when the transceiver unit 1020 is a transceiver, the transceiver may be comprised of a receiver and/or a transmitter. The processing unit 1010 in the communication device 1000 may be implemented by at least one processor, and the processing unit 1010 in the communication device 1000 may also be implemented by at least one logic circuit. Optionally, the communication device 1000 further comprises a storage unit, which may be implemented by a memory.

As shown in fig. 11, the communication device 1100 includes a processor 1110 and an interface circuit 1120. The processor 1110 and the interface circuit 1120 are coupled to each other. It is understood that the interface circuit 1120 may be a transceiver or an input-output interface. Optionally, the communication device 1100 may further include a memory 1130 for storing instructions to be executed by the processor 1110 or for storing input data required by the processor 1110 to execute instructions or for storing data generated after the processor 1110 executes instructions.

In one implementation, the memory 1130 may also be integrated into the processor 1110 or separate from the processor 1110.

When the communication device 1100 is configured to implement the method provided by the method embodiment, the processor 1110 is configured to implement the function of the processing unit 1010, and the interface circuit 1120 is configured to implement the function of the transceiver unit 1020.

When the communication device is a chip applied to the terminal, the terminal chip can realize the functions of the terminal in the method embodiment. The terminal chip receives information/data from other modules (such as a radio frequency module or an antenna) in the terminal, and the information/data is sent to the terminal by the network equipment; or the terminal chip sends information/data to other modules in the terminal, such as a radio frequency module or an antenna, which information/data is sent by the terminal device to the network device.

When the communication device is a module applied to the network device, the network device module may implement the functions of the network device in the method embodiment. The network device module receives information/data from other modules (such as a radio frequency module or an antenna) in the network device, the information/data being transmitted to the network device by the terminal; or the network device module transmits information/data to other modules in the network device, such as a radio frequency module or an antenna, which information/data is transmitted to the terminal by the network device. The network device module may be a baseband chip of the network device, or may be a DU or other module, where the DU may be a DU under an open radio access network (open radio access network, O-RAN) architecture.

It is to be appreciated that the Processor in embodiments of the application may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, DSPs), application Specific Integrated Circuits (ASICs), field programmable gate arrays (Field Programmable GATE ARRAY, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general purpose processor may be a microprocessor, but in the alternative, it may be any conventional processor.

The method steps of the embodiments of the present application may be implemented in hardware or in software instructions executable by a processor. The software instructions may be comprised of corresponding software modules that may be stored in random access memory, flash memory, read only memory, programmable read only memory, erasable programmable read only memory, electrically erasable programmable read only memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. The storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in an access network device or a terminal device. The processor and the storage medium may reside as discrete components in an access network device or terminal device.

According to the method provided by the application embodiment, the embodiment of the application further provides a computer program product, which comprises: computer program code which, when executed by one or more processors, causes an apparatus comprising the processor to perform the method provided by the method embodiments described above.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network device, a user device, or other programmable apparatus.

According to the method provided by the embodiment of the present application, the embodiment of the present application further provides a computer readable storage medium storing the computer program or instructions described above, which when executed by one or more processors, cause an apparatus including the processor to perform the method provided by the embodiment of the method described above.

The computer program or 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, from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means. 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, data center, etc. that integrates one or more available media. The usable medium may be a magnetic medium, e.g., floppy disk, hard disk, tape; but also optical media such as digital video discs; but also semiconductor media such as solid state disks. The computer readable storage medium may be volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage medium.

According to the method provided by the embodiment of the application, the embodiment of the application also provides a communication system which comprises one or more terminals. The system may further comprise one or more of the network devices described above.

In the several provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the above-described arrangements are merely illustrative, e.g., the division of the elements is merely a logical functional division, and there may be additional divisions of actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of this solution.

In various embodiments of the application, where no special description or logic conflict exists, terms and/or descriptions between the various embodiments are consistent and may reference each other, and features of the various embodiments may be combined to form new embodiments based on their inherent logic.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A communication method, characterized in that the method is applied to a first terminal, comprising:

receiving first indication information and/or second indication information from a network device, wherein the first indication information is used to indicate a first timing parameter, and the second indication information is used to indicate a frequency hopping parameter, the first timing parameter is used to obtain time resource synchronization with a second terminal, and the frequency hopping parameter is a frequency hopping parameter used by a signal sent by the second terminal,

The first indication information and the second indication information are used by the first terminal to eliminate signal interference between the first terminal and the second terminal.

2. The method according to claim 1, characterized in that the method further comprises:

Determine, according to the first indication information and/or the second indication information, an interference signal from the second terminal;

Data in the first signal is obtained according to the interference signal and the first signal from the network device.

3. The method according to claim 2, characterized in that the method further comprises:

Sending third indication information to the network device, where the third indication information is used to indicate the number P of terminals supported by the first terminal for simultaneously eliminating interference from multiple terminals, where the first indication information and the second indication information indicate parameters of Q second terminals, where Q is less than or equal to P, and P and Q are positive integers;

The determining, according to the first indication information and/or the second indication information, an interference signal from the second terminal includes:

Determine interference signals from the Q second terminals according to the first indication information and/or the second indication information.

4. The method according to claim 3 is characterized in that the third indication information is also used to indicate an interference elimination method of a downlink signal supported by the first terminal, and the interference elimination method includes a method for eliminating an interference signal from the terminal in the downlink signal.

5. The method according to claim 2, wherein the first indication information and the second indication information indicate parameters of Q second terminals,

According to the first indication information and/or the second indication information, interference signals from the K second terminals are determined, where the Q second terminals include the K second terminals, K is less than or equal to Q, and K and Q are positive integers.

6. The method according to claim 5, characterized in that the method further comprises:

The K second terminals are determined from the Q second terminals according to the interference strength of the Q second terminals and/or the number P of terminals that support simultaneous elimination of interference from multiple terminals, where P is a positive integer and K is less than or equal to P.

7. The method according to any one of claims 1 to 6, characterized in that the method further comprises:

First configuration information is received from the network device, where the first configuration information is used to configure one or more candidate timing parameters, where the first timing parameter is one of the one or more candidate timing parameters.

8. The method according to claim 7 is characterized in that the first configuration information is RRC signaling, and the first indication information is media access control MAC control element CE signaling, or downlink control information DCI.

9. The method according to any one of claims 1 to 8, wherein the second indication information is further used to indicate one or more of the following scheduling parameters:

Time domain resource allocation parameters, frequency domain resource allocation parameters, number of transmission layers, precoding parameters, modulation and coding methods or frequency hopping parameters.

10. The method according to claim 9, characterized in that the method further comprises:

Second configuration information is received from the network device, where the second configuration information is used to configure a candidate parameter set of at least one scheduling parameter, and a first scheduling parameter among the one or more scheduling parameters is one of the candidate parameter sets.

11. A communication method, characterized in that the method is applied to a first network device, comprising:

sending first indication information and/or second indication information to the first terminal, where the first indication information is used to indicate a first timing parameter, and the second indication information is used to indicate a frequency hopping parameter, where the timing parameter is used to acquire time resource synchronization with the second terminal, and the frequency hopping parameter is a frequency hopping parameter used by a signal sent by the second terminal,

12. The method according to claim 11, characterized in that the method further comprises:

Receive third indication information from the first terminal, where the third indication information is used to indicate the number P of terminals supported by the first terminal for simultaneously eliminating interference from multiple terminals, and the first indication information and the second indication information indicate parameters of Q second terminals, where Q is less than or equal to P, and P and Q are positive integers.

13. The method according to claim 12 is characterized in that the third indication information is also used to indicate an interference elimination method of a downlink signal supported by the first terminal, and the interference elimination method includes a method for eliminating an interference signal from the terminal in the downlink signal.

14. The method according to any one of claims 11 to 13, characterized in that the method further comprises:

First configuration information is sent to the first terminal, where the first configuration information is used to configure one or more candidate timing parameters, and the first timing parameter is one of the one or more candidate timing parameters.

15. The method according to claim 14 is characterized in that the first configuration information is RRC signaling, and the first indication information is media access control MAC control element CE signaling, or downlink control information DCI.

16. The method according to any one of claims 11 to 15, wherein the second indication information is further used to indicate one or more of the following scheduling parameters:

17. The method according to claim 16, characterized in that the method further comprises:

Second configuration information is sent to the first terminal, where the second configuration information is used to configure a candidate parameter set of at least one scheduling parameter, and a first scheduling parameter among the one or more scheduling parameters is one of the candidate parameter sets.

18. The method according to any one of claims 11 to 17, characterized in that the method further comprises:

Receive third configuration information from the second network device, where the third configuration information is used to indicate one or more of the following:

The first timing parameter, the frequency hopping parameter, the scheduling parameter of the second terminal, the reference signal configuration information of the second terminal, the capability information of the second terminal or the subcarrier spacing adopted by the second terminal.

19. A communication device, comprising:

a transceiver unit, configured to receive first indication information and/or second indication information from a network device, wherein the first indication information is used to indicate a first timing parameter, and the second indication information is used to indicate a frequency hopping parameter, wherein the first timing parameter is used to obtain time resource synchronization with a second terminal, and the frequency hopping parameter is a frequency hopping parameter used by a signal sent by the second terminal, wherein the first indication information and the second indication information are used by the first terminal to eliminate signal interference between the first terminal and the second terminal;

A processing unit, used to determine the first timing parameter according to the first indication information, and/or used to determine the frequency hopping parameter according to the second indication information.

20. The device according to claim 19, wherein the processing unit is further configured to:

21. The apparatus according to claim 20, characterized in that the transceiver unit is further used to send third indication information to the network device, the third indication information is used to indicate the number of terminals P supported by the first terminal to eliminate interference from multiple terminals at the same time, the first indication information and the second indication information indicate parameters of Q second terminals, Q is less than or equal to P, and P and Q are positive integers;

The processing unit is specifically configured to determine interference signals from the Q second terminals according to the first indication information and/or the second indication information.

22. The device according to claim 21 is characterized in that the third indication information is also used to indicate an interference elimination method of a downlink signal supported by the first terminal, and the interference elimination method includes a method for eliminating an interference signal from the terminal in the downlink signal.

23. The device according to claim 20, wherein the first indication information and the second indication information indicate parameters of Q second terminals,

The processing unit is specifically used to determine the interference signals from the K second terminals according to the first indication information and/or the second indication information, where the Q second terminals include the K second terminals, K is less than or equal to Q, and K and Q are positive integers.

24. The device according to claim 23 is characterized in that the processing unit is also used to determine the K second terminals among the Q second terminals based on the interference strength of the Q second terminals and/or the number of terminals P that support simultaneous elimination of interference from multiple terminals, where P is a positive integer and K is less than or equal to P.

25. The apparatus according to any one of claims 19 to 24, characterized in that the transceiver unit is also used to receive first configuration information from the network device, the first configuration information is used to configure one or more candidate timing parameters, and the first timing parameter is one of the one or more candidate timing parameters.

26. The device according to claim 25 is characterized in that the first configuration information is RRC signaling, and the first indication information is media access control MAC control element CE signaling, or downlink control information DCI.

27. The device according to any one of claims 19 to 26, wherein the second indication information is further used to indicate one or more of the following scheduling parameters:

28. The device according to claim 27 is characterized in that the transceiver unit is also used to receive second configuration information from the network device, and the second configuration information is used to configure a candidate parameter set of at least one scheduling parameter, and the first scheduling parameter among the one or more scheduling parameters is one of the candidate parameter sets.

29. A communication device, comprising:

a processing unit, configured to determine first indication information and/or second indication information, wherein the first indication information is used to indicate a first timing parameter, and the second indication information is used to indicate a frequency hopping parameter, the timing parameter is used to obtain time resource synchronization with a second terminal, and the frequency hopping parameter is a frequency hopping parameter used by a signal sent by the second terminal, wherein the first indication information and the second indication information are used by the first terminal to eliminate signal interference between the first terminal and the second terminal;

A transceiver unit is used to send the first indication information and/or the second indication information to the first terminal.

30. The device according to claim 29 is characterized in that the transceiver unit is used to receive third indication information from the first terminal, the third indication information is used to indicate the number P of terminals supported by the first terminal for simultaneously eliminating interference from multiple terminals, the first indication information and the second indication information indicate parameters of Q second terminals, Q is less than or equal to P, and P and Q are positive integers.

31. The device according to claim 30 is characterized in that the third indication information is also used to indicate the interference elimination method of the downlink signal supported by the first terminal, and the interference elimination method includes a method for eliminating the interference signal from the terminal in the downlink signal.

32. The device according to any one of claims 29 to 30 is characterized in that the transceiver unit is also used to send first configuration information to the first terminal, the first configuration information is used to configure one or more candidate timing parameters, and the first timing parameter is one of the one or more candidate timing parameters.

33. The device according to claim 32 is characterized in that the first configuration information is RRC signaling, and the first indication information is media access control MAC control element CE signaling, or downlink control information DCI.

34. The device according to any one of claims 29 to 33, wherein the second indication information is further used to indicate one or more of the following scheduling parameters:

35. The device according to claim 34 is characterized in that the transceiver unit is also used to send second configuration information to the first terminal, and the second configuration information is used to configure a candidate parameter set of at least one scheduling parameter, and a first scheduling parameter among the one or more scheduling parameters is one of the candidate parameter sets.

36. The apparatus according to any one of claims 29 to 35, wherein the transceiver unit is further configured to receive third configuration information from the second network device, wherein the third configuration information is configured to indicate one or more of the following:

37. A communication device, comprising at least one processor coupled to a memory;

The memory is used to store programs or instructions;

The at least one processor is configured to execute the program or instruction so that the apparatus implements the method according to any one of claims 1 to 10, or implements the method according to any one of claims 11 to 18.

38. A communication device, characterized in that it comprises at least one processor and a communication interface;

The communication interface is used to receive a signal input into the communication device or a signal output from the communication device, and the processor communicates with the communication interface and executes code instructions through a logic circuit to implement the method as described in any one of claims 1 to 10, or implements the method as described in any one of claims 11 to 18.

39. A computer-readable storage medium, characterized in that it stores instructions, and when the instructions are executed on a computer, the computer is caused to execute the method according to any one of claims 1 to 18.

40. A computer program product, comprising instructions, which, when executed on a computer, cause the computer to execute the method according to any one of claims 1 to 18.