Communication method and apparatus

Abstract

The embodiments of the present application relate to the field of communications. Provided are a communication method and apparatus, which are used for reducing conflicts concurring in CSI-RS measurement resources of different network devices, thereby improving the accuracy of CSI-RS measurement results. In the method, a first network device can determine resources for a reference signal of a first cell on the basis of a first cell identity for uniquely identifying the first cell of the first network device, and send the reference signal to a terminal device within the first cell on the basis of the resources for the reference signal of the first cell. The first cell is one of a plurality of cells, resources for the reference signal of each of the plurality of cells can all be determined on the basis of a cell identity of each cell, and the corresponding cell identity of each of the plurality of cells is unique, such that the resources for the corresponding reference signal of each of the plurality of cells can be different, thereby reducing conflicts concurring in reference signal measurement resources of different network devices and different cells of the same network device.

Description

Communication method and apparatus

[0001] The present application claims priority from the Chinese patent application No. 202411121243.0 filed on August 14, 2024, and entitled "Communication method and apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication, and in particular to a communication method and apparatus. BACKGROUND

[0003] Currently, in full duplex (FD) scenarios, subband full duplex (SBFD) scenarios, and dynamic time division duplex (TDD) scenarios, cross link interference (CLI) and blocking interference between network devices, between cells of a network device, or between terminal devices can be caused, resulting in a decrease in uplink and downlink performance of the network. Cross link interference can also be referred to as alien link interference, that is, interference between links in different directions. To address the CLI interference problem in FD scenarios and SBFD scenarios, the CLI interference between network devices can be avoided by improving user scheduling and resource allocation mechanisms. For example, each network device can distribute scheduling users and allocating resources based on measurement results of channel state information reference signals (CSI-RSs) of other network devices.

[0004] However, the CSI-RS measurement resources between different network devices or between different cells of the same network device can conflict, causing interference in the measurement of the CSI-RSs and resulting in inaccurate measurement results of the CSI-RSs. SUMMARY

[0005] Embodiments of the present application provide a communication method and apparatus, which can improve the accuracy of measurement results of CSI-RSs.

[0006] To achieve the above object, the embodiments of the present application adopt the following technical solutions:

[0007] In a first aspect, a communication method is provided. The method can be performed by a first network device, a module (e.g., a processor, a chip, or a chip system) applied to the first network device, or a logic node, a logic module, or software that can implement all or part of the functions of the first network device. For the convenience of description, the method performed by the first network device is taken as an example for description. The method includes determining a reference signal resource of a first cell according to a first cell number, and transmitting the reference signal to a terminal device in the first cell according to the reference signal resource of the first cell. The first cell number is used to uniquely identify a first cell of the first network device. The first cell belongs to one of a plurality of cells. The reference signal resources of any two cells in the plurality of cells are different. The reference signal is used for channel measurement between the first network device and the terminal device, and / or the reference signal is used for channel measurement and / or interference measurement between the first network device and a second network device.

[0008] Based on the method of the first aspect, the first network device can determine the reference signal resource of the first cell according to the first cell number that uniquely identifies the first cell of the first network device, and transmit the reference signal to the terminal device in the first cell according to the reference signal resource of the first cell. The first cell belongs to one of a plurality of cells. The reference signal resource of each cell in the plurality of cells can be determined according to the respective cell number of each cell. Based on the respective cell number of each cell in the plurality of cells, the reference signal resource of each cell in the plurality of cells is unique. In this way, the reference signal resource of each cell in the plurality of cells is randomized, thereby reducing or lowering, or even avoiding, the conflict of the reference signal measurement resources of different network devices (which can serve the plurality of cells and can include the first network device) or different cells of the same network device, to improve the accuracy and communication efficiency of the measurement results of the received reference signals of different network devices and different cells of the same network device.

[0009] In a possible design, the first cell number is different, and the reference signal resource of the first cell is different. In this way, the reference signal resource of each cell in the plurality of cells is randomized. The reference signal resource of the first cell includes at least one of a time domain resource, a frequency domain resource, or a code domain resource, to meet the needs of different scenarios.

[0010] In a possible design, the reference signal resource of the first cell includes a time domain resource. The determination of the reference signal resource of the first cell according to the first cell number includes determining the time domain resource of the reference signal of the first cell according to the first cell number and a measurement period of the reference signal. In this way, the reference signal resources of the plurality of cells are orthogonal in the time domain, that is, randomized in the time domain.

[0011] In a possible design, the time domain resource of the reference signal of the first cell satisfies the following relationship: T = T0 + X mod T1, where T is the time domain resource of the reference signal of the first cell, T0 is a reference time domain resource, X is the first cell number, T1 is the number of time units included in the measurement period, mod represents modulo, and T is in units of time units.

[0012] In a possible design, the time units included in the measurement period satisfy any of the following: the time units are uplink time units or downlink time units, that is, the time units included in the measurement period are all the time units included in the measurement period, which is simple to implement; or the time units are downlink time units (actually available time units), to avoid a situation in which some cells cannot send reference signals, which is flexible.

[0013] In a possible design, the time domain resource of the reference signal of the first cell satisfies the following relationship: T = T0 + (X mod T2) × K + k1, where T is the time domain resource of the reference signal of the first cell, T0 is a reference time domain resource, X is the first cell number, T2 is the number of time units included in the measurement period, the time units included in the measurement period include K sub-time units, 0 ≤ k1 ≤ K-1, k1 is an integer, mod represents modulo, and T is in units of sub-time units.

[0014] In a possible design, the K sub-time units satisfy any of the following: each of the K time units is an uplink sub-time unit or a downlink sub-time unit, that is, the time units (including the K sub-time units) included in the measurement period are all the time units included in the measurement period; or the sub-time units are downlink sub-time units (actually available sub-time units), to avoid a situation in which some cells cannot send reference signals, or a situation in which the number of sub-time units available for sending reference signals is small (for example, less than a preset value); or the sub-time units are downlink sub-time units (actually available sub-time units), and the K sub-time units are continuous in time domain, to avoid a situation in which some cells cannot send reference signals, or a situation in which the number of sub-time units available for sending reference signals is small (for example, less than a preset value), and a situation in which the phase of the reference signal sent by some cells is discontinuous (affecting the accuracy of a measurement result, weakening beamforming, or the like) due to discontinuity of the K sub-time units, which is flexible.

[0015] In a possible design, the time unit includes at least one of the following: a frame, a subframe, a slot, or a symbol, to meet the requirements of different scenarios.

[0016] In a possible design, the measurement period is a time division duplex (TDD) single period; and the time domain resource of the reference signal of the first cell satisfies the following relationship: T=T0+X mod(T3 / T4)+k2, where T is the time domain resource of the reference signal of the first cell, T0 is a reference time domain resource, X is the cell number, T3 is the length of the measurement period, T4 is the length of the TDD single period, 0≤k2≤T4-1, k2 is an integer, and mod represents modulo operation.

[0017] In a possible design, the measurement period is a TDD double period; and the time domain resource of the reference signal of the first cell satisfies the following relationship: When PCI mod 2=0, the reference signal of the first cell corresponds to the first TDD period, 0≤k3≤T (TDD，1) -1, and k3 is an integer; and when PCI mod 2≠0, the reference signal of the first cell corresponds to the second TDD period, 0≤k3≤T (TDD，2) -1, and k3 is an integer. Wherein, T is the time domain resource of the reference signal of the first cell, T0 is a reference time domain resource, X is the cell number, T5 is the length of the measurement period, T (TDD，1) is the length of the first TDD period, T (TDD，2) is the length of the second TDD period, and mod represents modulo operation.

[0018] Based on the above two designs, the scenario requirement of the measurement period being a TDD single period or a TDD double period can be met.

[0019] In a possible design, the method in the first aspect further includes: obtaining a starting time domain position of the measurement period, and determining a time domain resource position of the measurement period according to the starting time domain position and the length of the measurement period, so that the specific time domain resource position of the reference signal of the first cell can be obtained by the first network device according to the time domain resource position of the measurement period.

[0020] In a possible design, the resource of the reference signal of the first cell includes a frequency domain resource. The resource of the reference signal of the first cell is determined according to the cell number of the first cell, including: the frequency domain resource of the reference signal of the first cell is determined according to the cell number of the first cell and the frequency division multiplexing number of the reference signal. In this way, the resources of the reference signals corresponding to the plurality of cells can be orthogonal in the frequency domain, that is, randomized in the frequency domain.

[0021] In a possible design, the frequency domain resource of the reference signal of the first cell satisfies the following relationship: R=R0+X mod Y, where R is the frequency domain resource of the reference signal of the first cell, R0 is a reference frequency domain resource, X is the cell number, Y is the frequency division multiplexing number, and mod represents modulo operation.

[0022] In a possible design, the resource of the reference signal of the first cell includes a code domain resource. The resource of the reference signal of the first cell is determined according to the cell number of the first cell, including: the code domain resource of the reference signal of the first cell is determined according to the cell number of the first cell. In this way, the resources of the respective reference signals of the multiple cells can be orthogonal in the code domain, that is, randomized in the code domain.

[0023] In a possible design, there is cross-link interference between any two cells of the multiple cells. It can be understood that, based on the above description, the resource of the respective reference signal of each cell in the multiple cells is different, thereby reducing or lowering, or even avoiding the conflict of the reference signal measurement resources of different network devices. In this way, the degree of cross-link interference between any two cells in the multiple cells can be reduced or weakened, or even the cross-link interference between any two cells in the multiple cells can be avoided.

[0024] In a possible design, the first cell number is a physical cell identifier (PCI) of the first cell. That is, an existing cell identifier is reused to reduce the implementation complexity of the scheme, or a new cell identifier can be used to improve the implementation flexibility, which is not limited.

[0025] In a possible design, the reference signal includes at least one of the following: a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a cell reference signal (CRS), a synchronization signal block (SSB), a primary synchronization signal (PSS), a secondary synchronization signal (SSS), or a phase noise tracking signal (PT-RS), and the like. That is, an existing reference signal is reused to reduce the implementation difficulty, or a newly defined reference signal can be used, which is not limited.

[0026] In a second aspect, a communication apparatus is provided. The communication apparatus includes modules for performing the method in the first aspect, for example, a transceiver module and a processing module. The transceiver module is configured to indicate the transceiving function of the communication apparatus, and the processing module is configured to perform the function of the communication apparatus other than the transceiving function.

[0027] For example, the processing module is configured to determine the resource of the reference signal of the first cell according to the cell number of the first cell. The transceiver module is configured to send the reference signal to a terminal device in the first cell according to the resource of the reference signal of the first cell. The cell number of the first cell is used to uniquely identify the first cell of the communication apparatus in the second aspect, the first cell belongs to one of the multiple cells, and the resources of the reference signals of any two cells in the multiple cells are different. The reference signal is used for channel measurement between the communication apparatus and the terminal device, and / or the reference signal is used for channel measurement and / or interference measurement between the communication apparatus and a second network device.

[0028] In a possible design, the first cell number is different, and the resource of the reference signal of the first cell is different; the resource of the reference signal of the first cell includes at least one of the following: a time domain resource, a frequency domain resource, or a code domain resource.

[0029] In a possible design, the resource of the reference signal of the first cell includes a time domain resource; and the processing module is further configured to determine the time domain resource of the reference signal of the first cell according to the first cell number and a measurement period of the reference signal.

[0030] In a possible design, the time domain resource of the reference signal of the first cell satisfies the following relationship: T=T0+X mod T1, where T is the time domain resource of the reference signal of the first cell, T0 is a reference time domain resource, X is the first cell number, T1 is a number of time units included in the measurement period, mod represents modulo operation, and T is in units of time units.

[0031] In a possible design, the time unit included in the measurement period satisfies any one of the following: the time unit is an uplink time unit or a downlink time unit; or the time unit is a downlink time unit.

[0032] In a possible design, the time domain resource of the reference signal of the first cell satisfies the following relationship: T=T0+(X mod T2)×K+k1, where T is the time domain resource of the reference signal of the first cell, T0 is a reference time domain resource, X is the first cell number, T2 is a number of time units included in the measurement period, the time unit included in the measurement period includes K sub-time units, 0≤k1≤K-1 and k1 is an integer, mod represents modulo operation, and T is in units of sub-time units.

[0033] In a possible design, the K sub-time units satisfy any one of the following: the sub-time unit is an uplink sub-time unit or a downlink sub-time unit; or the sub-time unit is a downlink sub-time unit; or the sub-time unit is a downlink time unit, and the K sub-time units are continuous in time domain.

[0034] In a possible design, the time unit includes at least one of the following: a frame, a subframe, a slot, or a symbol.

[0035] In a possible design, the measurement period is a time division duplex (TDD) single period; and the time domain resource of the reference signal of the first cell satisfies the following relationship: T=T0+X mod(T3 / T4)+k2, where T is the time domain resource of the reference signal of the first cell, T0 is a reference time domain resource, X is the cell number, T3 is a length of the measurement period, T4 is a length of the TDD single period, 0≤k2≤T4-1 and k2 is an integer, and mod represents modulo operation.

[0036] In a possible design, the measurement period is a time division duplex, TDD, dual period; and the time domain resource of the reference signal of the first cell satisfies the following relationship: When PCI mod 2 = 0, the reference signal of the first cell corresponds to the first TDD period, 0≤k3≤T (TDD，1) -1 and k3 is an integer; when PCI mod 2≠0, the reference signal of the first cell corresponds to the second TDD period, 0≤k3≤T (TDD，2) -1 and k3 is an integer. Wherein, T is the time domain resource of the reference signal of the first cell, T0 is a reference time domain resource, X is a cell number, T5 is the length of the measurement period, T (TDD，1) is the length of the first TDD period, T (TDD，2) is the length of the second TDD period, and mod represents modulo operation.

[0037] In a possible design, the processing module is further configured to acquire a starting time domain position of the measurement period, and determine a time domain resource position of the measurement period according to the starting time domain position and the length of the measurement period.

[0038] In a possible design, the resource of the reference signal of the first cell includes a frequency domain resource. The processing module is further configured to determine the frequency domain resource of the reference signal of the first cell according to the first cell number and a frequency division multiplexing number of the reference signal.

[0039] In a possible design, the frequency domain resource of the reference signal of the first cell satisfies the following relationship: R=R0+X mod Y. Wherein, R is the frequency domain resource of the reference signal of the first cell, R0 is a reference frequency domain resource, X is a cell number, Y is a frequency division multiplexing number, and mod represents modulo operation.

[0040] In a possible design, the resource of the reference signal of the first cell includes a code domain resource. The processing module is further configured to determine the code domain resource of the reference signal of the first cell according to the first cell number.

[0041] In a possible design, there is a cross-link interference between any two cells of the plurality of cells.

[0042] In a possible design, the first cell number is a physical cell identifier, PCI, of the first cell.

[0043] In a possible design, the reference signal includes at least one of the following: a channel state information reference signal, CSI-RS, a demodulation reference signal, DMRS, a cell reference signal, CRS, a synchronization signal block, SSB, a primary synchronization signal, PSS, a secondary synchronization signal, SSS, or a phase noise tracking signal, PT-RS.

[0044] Optionally, the transceiver module can include a transmitting module and a receiving module. The transmitting module is configured to implement the transmitting function of the communication apparatus of the second aspect, and the receiving module is configured to implement the receiving function of the communication apparatus of the second aspect.

[0045] Optionally, the communication apparatus of the second aspect can further include a storage module, which stores a program or an instruction. When the processing module executes the program or the instruction, the communication apparatus can execute the method of the first aspect.

[0046] It can be understood that the communication apparatus of the second aspect can be a network device, a chip (system) or other components or assemblies that can be arranged in the network device, or an apparatus including the network device, which are not limited in the present application.

[0047] In addition, the technical effects of the communication apparatus of the second aspect can refer to the technical effects of the method of the first aspect, which will not be repeated here.

[0048] In the third aspect, a communication apparatus is provided. The communication apparatus includes a processor configured to execute the communication method of the first aspect.

[0049] In a possible design, the communication apparatus of the third aspect can further include a transceiver. The transceiver can be a transceiver circuit or an interface circuit. The transceiver can be configured to enable the communication apparatus of the third aspect to communicate with other communication apparatuses.

[0050] In a possible design, the communication apparatus of the third aspect can further include a memory. The memory can be integrated with the processor, or can be separately arranged. The memory can be configured to store a computer program and / or data related to the communication method of the first aspect.

[0051] In the embodiments of the present application, the communication apparatus of the third aspect can be the first network device of the first aspect, or a chip (system) or other components or assemblies in the first network device, or an apparatus including the first network device.

[0052] In addition, the technical effects of the communication apparatus of the third aspect can refer to the technical effects of the communication method of the first aspect, which will not be repeated here.

[0053] In the fourth aspect, a communication apparatus is provided. The communication apparatus includes a processor coupled with a memory, and the processor is configured to execute a computer program stored in the memory, so that the communication apparatus executes the communication method of the first aspect.

[0054] In one possible design, the communication device described in the fourth aspect may further include a transceiver. This transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the fourth aspect and other communication devices.

[0055] In the embodiments of this application, the communication device described in the fourth aspect may be the first network device described in the first aspect, or a chip (system) or other component or assembly in the first network device, or a device containing the first network device.

[0056] Furthermore, the technical effects of the communication device described in the fourth aspect can be referred to the technical effects of the communication method described in the first aspect, and will not be repeated here.

[0057] Fifthly, a communication device is provided, comprising: a processor and a memory; the memory is used to store a computer program, which, when executed by the processor, causes the communication device to perform the communication method described in the first aspect.

[0058] In one possible design, the communication device described in the fifth aspect may further include a transceiver. This transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the fifth aspect and other communication devices.

[0059] In the embodiments of this application, the communication device described in the fifth aspect may be the first network device described in the first aspect, or a chip (system) or other component or assembly in the first network device, or a device containing the first network device.

[0060] Furthermore, the technical effects of the communication device described in the fifth aspect can be referred to the technical effects of the communication method described in the first aspect, and will not be repeated here.

[0061] A sixth aspect provides a communication device comprising: a processor; the processor being coupled to a memory and, after reading a computer program from the memory, executing the communication method as described in the first aspect according to the computer program.

[0062] In one possible design, the communication device described in the sixth aspect may further include a transceiver. This transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the sixth aspect and other communication devices.

[0063] In the embodiments of this application, the communication device described in the sixth aspect may be the first network device described in the first aspect, or a chip (system) or other component or assembly in the first network device, or a device containing the first network device.

[0064] In addition, the technical effects of the communication device of the sixth aspect can refer to the technical effects of the communication method of the first aspect, which will not be repeated here.

[0065] In a seventh aspect, a communication system is provided. The communication system includes the first network device of the first aspect and the terminal device.

[0066] In an eighth aspect, a communication chip is provided, wherein instructions are stored in the chip, and when the chip is run on a communication device, the communication method of the first aspect is implemented.

[0067] In a ninth aspect, a computer readable storage medium is provided, including a computer program or instructions; when the computer program or instructions are run on a computer, the computer executes the communication method of the first aspect.

[0068] In a tenth aspect, a computer program product is provided, including a computer program or instructions; when the computer program or instructions are run on a computer, the computer executes the communication method of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0069] FIG. 1 is a time-frequency diagram of TDD;

[0070] FIG. 2 is a time-frequency diagram of SBFD;

[0071] FIG. 3 is a time-frequency diagram of SFFD;

[0072] FIG. 4 is a CLI interference diagram of an SBFD scenario;

[0073] FIG. 5 is a CLI interference diagram of a simultaneous in-band full duplex scenario;

[0074] FIG. 6 is a gNB-gNB CLI interference diagram caused by independent allocation of resources of a neighbor cell;

[0075] FIG. 7 is a UE-UE CLI interference diagram caused by independent scheduling of users of a neighbor cell;

[0076] FIG. 8 is a diagram of distributed coordinated scheduling users and allocating resources based on CSI-RS measurement of a neighbor cell;

[0077] FIG. 9 is an architecture diagram of a communication system provided by an embodiment of the present application;

[0078] FIG. 10 is a diagram of a connection relationship between a terminal device and a network device provided by an embodiment of the present application;

[0079] FIG. 11 is a diagram of a RAN chip architecture provided by an embodiment of the present application;

[0080] FIG. 12 is a schematic diagram of a hardware structure suitable for a baseband chip according to an embodiment of the present application;

[0081] FIG. 13 is a schematic diagram of a communication method according to an embodiment of the present application;

[0082] FIG. 14 is a schematic diagram of determining time domain resource positions of each measurement period according to an embodiment of the present application;

[0083] FIG. 15 is a schematic diagram of time domain resource distribution of reference signals of different cells according to an embodiment of the present application;

[0084] FIG. 16 is a schematic diagram of time domain resource distribution of reference signals of different cells according to an embodiment of the present application;

[0085] FIG. 17 is a schematic diagram of time domain resource distribution of reference signals of different cells according to an embodiment of the present application;

[0086] FIG. 18 is a schematic diagram of time domain resource distribution of reference signals of different cells according to an embodiment of the present application;

[0087] FIG. 19 is a schematic diagram of time domain resource distribution of reference signals of different cells according to an embodiment of the present application;

[0088] FIG. 20 is a schematic diagram of time domain resource distribution of reference signals of different cells according to an embodiment of the present application;

[0089] FIG. 21 is a schematic diagram of time domain resource distribution of reference signals of different cells according to an embodiment of the present application;

[0090] FIG. 22 is a schematic diagram of time domain resource distribution of reference signals of different cells according to an embodiment of the present application;

[0091] FIG. 23 is a schematic diagram of time domain resource distribution of reference signals of different cells according to an embodiment of the present application;

[0092] FIG. 24 is a schematic diagram of frequency domain resource distribution of reference signals of different cells according to an embodiment of the present application;

[0093] FIG. 25 is a schematic diagram of time-frequency domain resource distribution of reference signals of different cells according to an embodiment of the present application;

[0094] FIG. 26 is a schematic diagram of time-frequency domain resource distribution of reference signals of different cells according to an embodiment of the present application;

[0095] FIG. 27 is a schematic diagram of a communication apparatus according to an embodiment of the present application;

[0096] FIG. 28 is a schematic diagram of a communication apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0097] For the convenience of understanding, the technical terms involved in the embodiments of the present application are introduced first.

[0098] 1, pilot signal

[0099] The pilot signal can also be referred to as a pilot or a reference signal (RS), etc., which is a known signal provided by the sending end to the receiving end for channel estimation or channel sounding. The pilot signal can be divided into an uplink pilot signal and a downlink pilot signal. The uplink pilot signal can be a signal sent by the terminal device to the network device, i.e., the sending end is the terminal device and the receiving end is the network device; the uplink pilot signal can be used for uplink channel estimation (such as used for coherent demodulation and detection of the network device or used for calculating precoding), or uplink channel quality measurement, etc. The downlink pilot signal can be a signal sent by the network device to the terminal device, i.e., the sending end is the network device and the receiving end is the terminal device; the downlink pilot signal can be used for downlink channel estimation (such as used for coherent detection and demodulation of the terminal device), downlink channel quality measurement, or cell search, etc.

[0100] The uplink pilot signal includes a sounding reference signal (SRS), a demodulation reference signal (DMRS), a phase noise tracking signal (PTRS), etc. The downlink pilot signal includes a channel status information reference signal (CSI-RS), a DMRS, a cell reference signal (CRS), a synchronization signal block (SSB), a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a phase noise tracking signal (PT-RS), etc.

[0101] 2, subband full duplex (SBFD)

[0102] With the rapid development of the fifth generation mobile communication technology new radio (NR), a variety of communication needs have emerged, among which emerging businesses such as virtual reality (VR) and industry 4.0 require NR to support low latency and large capacity uplink services. However, in the widely used time division duplex (TDD) system, the downlink (DL) usually occupies most of the time resources, which causes poor uplink (UL) coverage and large latency, and cannot meet the needs of emerging businesses such as VR and industry 4.0. Among them, TDD refers to separating transmission and reception in the time domain.

[0103] For example, as shown in FIG. 1, where the horizontal direction represents the time domain (time, t), and the vertical direction represents the frequency domain (frequency, f), a group of time-frequency resources for downlink data or control information transmission, the time domain range it occupies is called downlink slot, that is, DL slot; a group of time-frequency resources for uplink data or control information transmission, the time domain range it occupies is called uplink slot, that is, UL slot. As can be seen, the DL slot occupies most of the time resources.

[0104] To meet the needs of emerging businesses such as VR and industry 4.0, the 3rd generation partnership project (3GPP) release (R) 18 proposes SBFD and single frequency full duplex (SFFD) schemes to improve the uplink coverage performance and reduce the latency in the TDD system.

[0105] In the SBFD scheme, one component carrier (CC) is divided into multiple non-overlapping subbands, and the transmission directions of different subbands can be different. A subband can be a part of the frequency band in a carrier, i.e., one or more contiguous physical resource blocks (PRBs) in the frequency domain. In the embodiments of the present application, a subband can also be understood as a frequency resource. For example, as shown in (a) and (b) of FIG. 2, the horizontal direction represents the time domain (t), and the vertical direction represents the frequency domain (f). DL represents a downlink resource, which is used for downlink data or control information transmission; UL represents an uplink resource, which is used for uplink data or control information transmission. A time period with both DL and UL is referred to as an SBFD slot or symbol, a time period including only uplink resources is referred to as an uplink slot or uplink symbol, and a time period including only downlink resources is referred to as a downlink slot or uplink symbol. In other words, in SBFD, uplink and downlink use different frequency domain resources (subbands).

[0106] In the SFFD scheme, uplink and downlink use the same frequency domain resources. That is, on one symbol, the entire CC can be used for transmission and reception at the same time. For example, as shown in FIG. 3, the horizontal direction represents the time domain, and the vertical direction represents the frequency domain. The time-frequency resources shown in FIG. 3 represent a set of time-frequency resources used for simultaneous downlink and uplink data or control information transmission.

[0107] For convenience of understanding, a slot in which a symbol having both uplink and downlink subbands is divided on the frequency band can be referred to as an SBFD slot (also including the full duplex (FD) case, which means that transmission and reception can be performed at the same time), and can be denoted as an X slot. The X slot can be used to distinguish a D slot, a U slot, and an S slot, where the D slot can represent a downlink slot, the U slot can represent an uplink slot, and the S slot can represent a flexible slot.

[0108] 3. User scheduling and resource allocation

[0109] User scheduling: A network device can select a terminal device to be served, allocate resources to the selected terminal device, and provide data transmission services for the terminal device on the allocated resources. Currently, user scheduling of network devices is independent of each other, or decoupled, i.e., network devices do not exchange scheduling information and scheduling results with each other, nor do they take the scheduling information and scheduling results of other network devices into account in the scheduling decision of the cell. This conventional scheduling method is referred to as independent scheduling.

[0110] Resource allocation: the network device allocates time domain, frequency domain and spatial domain resources (i.e. beams) to the terminal devices served by it, and the terminal devices will send uplink signals or receive downlink signals in the allocated time domain, frequency domain and spatial domain resources. Currently, the resource allocation of the network device is independent of each other, or in other words, decoupled, that is, the network device will not interact with each other resource allocation information and resource allocation results, nor will it include the resource allocation information and resource allocation results of other network devices into the resource allocation decision of the cell. This conventional resource allocation method is referred to as independent resource allocation.

[0111] 4. Cross-link interference (CLI)

[0112] Cross-link interference can also be referred to as cross-link interference or cross-link interference, that is, the interference between links in different directions. In the FD scenario, the SBFD scenario and the dynamic TDD scenario, CLI and blocking interference will be caused, resulting in the reduction of the uplink and downlink performance of the network. The CLI can include CLI between terminal devices and terminal devices, and CLI between network devices and network devices.

[0113] For example, the network device is next generation Node-B (gNB) #1 and gNB #1, and the terminal device is user equipment (UE) #1, UE #2, UE #3 and UE #4. For example, UE #1 and UE #2 under gNB #1 perform downlink reception, UE #3 under gNB #2 performs uplink transmission, and UE #4 under gNB #2 performs downlink reception. As shown in FIG. 4, in the SBFD scenario, base station #1 and base station #2 both transmit on sub-band #1 and sub-band #2. There is CLI between base station #1 and base station #2, which can be referred to as gNB-gNB CLI, for example, the downlink transmission of base station #1 will cause CLI to the uplink reception of base station #2; there is CLI between UE #1 and UE #3, and between UE #3 and UE #4, which can be referred to as UE-UE CLI, for example, the uplink transmission of UE #3 will cause interference to the downlink reception of UE #1, and the uplink transmission of UE #3 will cause interference to the downlink reception of UE #4; base station #2 also has CLI, which can be referred to as self CLI, for example, the uplink reception of base station #2 will cause CLI to the downlink reception of base station #2.

[0114] As shown in FIG. 5, in a simultaneous same frequency full duplex scenario, the uplink and downlink of base station #1 and base station #2 are transmitted on the same time-frequency resource. There is CLI (i.e., gNB-gNB CLI) between base station #3 and base station #4, for example, the downlink transmission of base station #1 causes CLI to the uplink reception of base station #2; there is CLI (i.e., UE-UE CLI) between UE #1 and UE #3, and between UE #3 and UE #4, for example, the uplink transmission of UE #3 causes interference to the downlink reception of UE #1, and the uplink transmission of UE #3 causes CLI to the downlink transmission of UE #4.

[0115] The following describes the generation of inter-base station CLI interference, for example, as shown in FIG. 6, based on independent resource allocation of adjacent cells (i.e., neighboring cells, including cell #1, cell #2, cell #3, cell #4, cell #5, cell #6, and cell #7), in the same time, the transmission beams of all aggressor cells, i.e., cell #1, cell #2, cell #5, and cell #6, are all directed to the reception beam of the victim cell, i.e., cell #7, thereby causing serious inter-network device CLI and blocking interference, that is, cell #7 is subjected to serious CLI and blocking interference from the neighboring cells, resulting in reduced uplink performance of the victim cell. Among them, the transmission beams of all aggressor cells and the reception beam of the victim cell are the optimal beams determined by independent resource allocation.

[0116] The following describes the generation of inter-terminal CLI interference, for example, as shown in FIG. 7, in the same time, two adjacent cells (i.e., neighboring cells, corresponding to gNB #1 (or base station (BS) #1) and gNB #2 (or BS #2) schedule an uplink UE (denoted as UE #1) and a downlink UE (denoted as UE #2) respectively, UE #1 and UE #2 are particularly close, and the transmission signal of UE #1 will cause serious interference to UE #2, and even blocking, the two UEs are called UE interference pair, UE #1 is the aggressor UE, and UE #2 is the victim UE, this uplink-to-downlink interference is called inter-terminal CLI, thereby resulting in reduced downlink performance of the victim UE. Among them, all aggressor UEs and victim UEs are users determined by independent scheduling of the corresponding cells. It can be understood that there is also gNB-gNB CLI between the gNB #1 and the gNB #2, which is not described herein.

[0117] Currently, for the CLI interference problem in the FD scenario and the SBFD scenario, the CLI interference between network devices can be avoided by improving the user scheduling and resource allocation mechanism, that is, each network device can distribute coordination scheduling users and allocating resources based on the measurement results of the CSI-RS of other network devices. For example, taking three network devices, gNB#1, gNB#2 and gNB#3, gNB#1 can serve UE#1 and UE#2, that is, gNB#1 can perform data transmission with UE#1 and UE#2; gNB#2 can serve UE#3 and UE#4, that is, gNB#2 can perform data transmission with UE#3 and UE#4; gNB#3 can serve UE#5 and UE#6, that is, gNB#3 can perform data transmission with UE#5 and UE#6, and there is CLI between gNB#1, gNB#2 and gNB#3. The independent user scheduling and independent resource allocation are performed between gNB#1, gNB#2 and gNB#3.

[0118] As shown in FIG. 8, three-station pre-scheduling information broadcast can be performed between gNB#1, gNB#2 and gNB#3, for example, gNB#1 can measure the CSI-RS transmitted by gNB#2 and gNB#3, gNB#2 can measure the CSI-RS transmitted by gNB#1 and gNB#3, and gNB#3 can measure the CSI-RS transmitted by gNB#1 and gNB#2, in this way, gNB#1, gNB#2 and gNB#3 can obtain the measurement results of the CSI-RS from other base stations, and distribute coordination scheduling users and allocating resources based on the measurement results of the CSI-RS. At the same time, gNB#1, gNB#2 and gNB#3 can perform data transmission with the UEs served by them.

[0119] However, the CSI-RS measurement resources between different network devices or different cells of the same network device may conflict, which may interfere with the measurement of the CSI-RS, resulting in inaccurate measurement results of the CSI-RS. The measurement results can include measurement results of interference channel state, and / or measurement results of interference signal strength, etc., without limitation.

[0120] For example, as shown in FIG. 8, taking the measurement of the CSI-RS sent by gNB#3 to gNB#1 and gNB#2 as an example. If the CSI-RS measurement resources of gNB#1 and gNB#2 are the same or have an overlapping part, which can be recorded as time-frequency resource #1, the CSI-RS measurement resources of gNB#1 and gNB#2 conflict. gNB#1 can send the CSI-RS to UE#1 on the time-frequency resource #1, gNB#2 can send the CSI-RS to UE#3 on the time-frequency resource #1, and gNB#3 can simultaneously receive the CSI-RS from gNB#1 and the CSI-RS from gNB#2 on the time-frequency resource #1. At this time, because gNB#3 simultaneously receives the CSI-RS from gNB#1 and the CSI-RS from gNB#2 on the time-frequency resource #1, there is interference between the CSI-RS from gNB#1 and the CSI-RS from gNB#2, in other words, gNB#3 cannot distinguish the CSI-RS from gNB#1 and the CSI-RS from gNB#2, so that the measurement is interfered, resulting in inaccurate measurement results.

[0121] In summary, in view of the above technical problems, the embodiment provides the following technical solutions to reduce the conflict of the CSI-RS measurement resources between different network devices or different cells of the same network device, and improve the accuracy of the measurement results of the CSI-RS.

[0122] The technical solutions in the embodiments of the present application will be described below with reference to the drawings.

[0123] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as a Bluetooth system, a wireless fidelity (WiFi) system, a long range radio (LoRa), a vehicle to everything (V2X) communication system, a device-to-device (D2D) communication system, a 4th generation (4G) communication system such as a long term evolution (LTE) system, a worldwide interoperability for microwave access (WiMAX) communication system, a 5th generation (5G) communication system such as a new radio (NR) system, and future communication systems, etc. The method provided by the embodiments of the present application can also be applied to a satellite communication system, wherein the satellite communication system can be integrated with the above-mentioned communication systems (such as the above-mentioned Bluetooth system, WiFi system, etc.).

[0124] Various aspects, embodiments or features can be presented in terms of systems, which can include a number of devices, components, modules, and the like. It is to be understood and appreciated that the various systems can include additional devices, components, modules, etc. and / or can not include all of the devices, components, modules etc.

[0125] Additionally, the words "example" and / or "exemplary" are used herein to mean serving as an instance, example, or illustration. Any implementation described herein as "example" or as an "exemplary implementation" should not be construed to be preferred or advantageous over other implementations. The

[0126] In embodiments of the present application, "information", "signal", "message", "channel", "signaling" can be used interchangeably, and it should be pointed out that when the distinction is not emphasized, the meaning expressed is matched. "Of", "corresponding" and "corresponding" can be used interchangeably, and it should be pointed out that when the distinction is not emphasized, the meaning expressed is matched. In addition, the " / " mentioned in the present application can be used to represent the relationship of "or". It can be understood that in the present application, "indication" can include direct indication, indirect indication, display indication, implicit indication. When describing a certain indication information for indicating A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0127] In embodiments of the present application, the information indicated by the indication information is referred to as the to-be-indicated information. In the specific implementation process, there are many ways to indicate the to-be-indicated information, for example, but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or the index of the to-be-indicated information, or the to-be-indicated information can be indirectly indicated by indicating other information, wherein the other information and the to-be-indicated information have an association relationship. It can also only indicate a part of the to-be-indicated information, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can also be achieved by means of the arrangement order of each information agreed in advance (for example, the protocol stipulates), thereby reducing the indication overhead to a certain extent.

[0128] The to-be-indicated information can be sent together as a whole, or can be divided into multiple sub-information and sent separately, and the sending period and / or sending occasion of the sub-information can be the same or different. The specific sending method is not limited in the present application. The sending period and / or sending occasion of the sub-information can be predefined, for example, predefined according to a protocol, or configured by the transmitting end device by sending configuration information to the receiving end device.

[0129] The network architecture and service scenarios described in the embodiments of the present application are used to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art can know that, with the evolution of network architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0130] To facilitate understanding of the embodiments of the present application, first, a communication system shown in FIG. 9 is taken as an example to describe the communication system applicable to the embodiments of the present application in detail. For example, FIG. 9 is a schematic diagram of a possible and non-limiting communication system. As shown in FIG. 9, the communication system 1000 includes a radio access network (RAN) 100 and a core network (CN) 200. Optionally, the communication system 1000 can also include an Internet 300. The RAN 100 includes at least one RAN node (such as 110a and 110b in FIG. 9, collectively referred to as 110) and at least one terminal (such as 120a-120j in FIG. 9, collectively referred to as 120). The RAN 100 can also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in FIG. 9), etc. The terminal 120 is connected to the RAN node 110 in a wireless manner. The RAN node 110 is connected to the core network 200 in a wireless or wired manner. The core network device in the core network 200 and the RAN node 110 in the RAN 100 can be different physical devices respectively, or can be the same physical device integrated with the logical functions of the core network and the logical functions of the wireless access network.

[0131] The RAN 100 can be a 3rd generation partnership project (3GPP) related cellular system, such as a 4G, 5G mobile communication system, or a future-oriented evolution system. The RAN 100 can also be an open access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a Wi-Fi system. The RAN 100 can also be a communication system in which two or more of the above systems are integrated.

[0132] The RAN node 110, which can also be referred to as a network device, an access network device, a RAN entity, or an access node, etc., forms part of the communication system, and is configured to facilitate wireless access by terminals. The RAN nodes 110 in the communication system 1000 can be of the same type or different types. In some scenarios, the roles of the RAN node 110 and the terminal 120 are relative, e.g., the network element 120i in Figure 9 can be a helicopter or a drone, which can be configured to be a mobile base station, for a terminal 120j accessing to the RAN 100 through the network element 120i, the network element 120i is a base station; but for the base station 110a, the network element 120i is a terminal. The RAN nodes 110 and the terminals 120 are sometimes referred to as communication apparatuses, e.g., the network elements 110a and 110b in Figure 9 can be understood as communication apparatuses with base station functionalities, and the network elements 120a-120j can be understood as communication apparatuses with terminal functionalities.

[0133] In a possible scenario, the RAN node can be a base station, an evolved Node B (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation Node B (gNB), a base station in a future mobile communication system, or an access node in a Wi-Fi system, etc. The RAN node can be a macro base station (e.g., 110a in Figure 9), a micro base station or an indoor station (e.g., 110b in Figure 9), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the RAN node can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, the access network device in the V2X technology can be a road side unit (RSU). All or part of the functions of the RAN node in the present application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (e.g., a cloud platform). The RAN node can also be provided with a communication module, circuit or chip for performing corresponding communication functions, and program instructions for performing corresponding communication functions. The RAN node in the present application can also be a logical node, a logical module or software that can implement all or part of the functions of the RAN node.

[0134] In another possible scenario, a terminal is assisted by multiple RAN nodes to implement wireless access, and different RAN nodes respectively implement part of functions of a base station. For example, a RAN node can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be separately arranged, or can be included in the same network element, for example, in a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, for example, in a remote radio unit (RRU), an active antenna processing unit (AAU), or a remote radio head (RRH).

[0135] In different systems, the CU (or CU-CP and CU-UP), DU, or RU can also have different names, but those skilled in the art can understand their meanings. For example, in an O-RAN system, the CU can also be referred to as an O-CU (open CU), the DU can also be referred to as an O-DU, the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU, and RU are taken as examples for description in this application. Any one of the CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0136] In the embodiments of this application, the form of the network device is not limited, and the device for implementing the functions of the network device can be the network device; or can be a device capable of supporting the network device to implement the functions, for example, a chip system. The device can be installed in the network device or used in matching with the network device.

[0137] A terminal can be a device or module with corresponding communication functions to access the above-mentioned communication system. The terminal device can be a terminal device with transceiver functions, or can also be a chip or chip system provided in the terminal device. The terminal device can also be referred to as a user equipment (UE), an access terminal device, a subscriber unit, a user station, a mobile station (MS), a mobile station, a remote station, a remote terminal device, a mobile device, a user terminal device, a terminal device, a wireless communication device, a user agent, or a user apparatus. The terminal device in the embodiments of the present application can be a mobile phone, a cellular phone, a smart phone, a tablet computer (Pad), a wireless data card, a personal digital assistant computer (PDA), a wireless modem, a handset, a laptop computer, a machine type communication (MTC) terminal device, a computer with wireless transceiver functions, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a smart home device (e.g., a refrigerator, a television, an air conditioner, an electricity meter, etc.), a smart robot, a mechanical arm, a workshop device, a wireless terminal device in a self-driving vehicle, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical treatment, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, a vehicle-mounted terminal device, a road side unit (RSU) with terminal device functions, etc., a flight device (e.g., a smart robot, a hot air balloon, a drone, an airplane), etc. The terminal device of the present application can also be a vehicle-mounted module, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit built into a vehicle as one or more components or units, a transport carrier with wireless communication functions, a communication module. The terminal device can also be other devices with terminal device functions, for example, the terminal device can also be a device with terminal device functions in D2D communication.

[0138] Embodiments of the present application do not limit the form of the terminal device, and the device for implementing the function of the terminal device can be the terminal device, or can be a device capable of supporting the terminal device to implement the function, such as a chip system. The device can be installed in the terminal device or used with the terminal device. In embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices. The terminal device is usually provided with a communication module, circuit or chip for performing a corresponding communication function. The terminal device also has program instructions configured to perform a corresponding communication function.

[0139] It can be understood that, in embodiments of the present application, the communication system described in FIG. 9 can include two or more network devices (such as a first network device and a second network device) and a plurality of terminal devices, without limitation.

[0140] In the communication system, the first network device can determine the resource of the reference signal of the first cell according to the first cell number uniquely identifying the first cell of the first network device, and transmit the reference signal to the terminal device in the first cell according to the resource of the reference signal of the first cell. The first cell belongs to one of a plurality of cells, and the resource of the reference signal of each cell in the plurality of cells can be determined according to the cell number of each cell. Based on the fact that each cell in the plurality of cells has a unique corresponding cell number, the resource of the reference signal corresponding to each cell in the plurality of cells is different, i.e., the resource is randomized, so as to reduce or lower, or even avoid, the conflict of the reference signal measurement resource of different network devices (which can serve the plurality of cells and can include the first network device) or different cells of the same network device, so as to improve the accuracy and communication efficiency of the measurement result of the received reference signal of different network devices and different cells of the same network device.

[0141] It can be understood that FIG. 9 is a simplified schematic diagram for ease of understanding, and the communication system can also include other devices, which are not shown in FIG. 9.

[0142] In the communication system shown in FIG. 9, the connection relationship between the terminal device and the network device can be as shown in FIG. 10, and the terminal device and the network device can be connected through an air interface (air interface, referred to as air interface).

[0143] Fig. 11 is a schematic diagram of a RAN chip architecture according to an embodiment of the present application. As shown in Fig. 11, the architecture is divided into CU, DU and RU. The CU is a platform that performs upper layer, such as layer (L) 2 and L3 functions. Midhaul and backhaul interfaces are used to carry traffic between the CU and the DU, and between the CU and the CN. The DU performs L1 and part of L2 functions, and the RU performs L1 computation and radio frequency (RF) digital part functions. Fronthaul and backhaul interfaces are used to carry traffic between the RU and the DU, and between the CU and the DU. The integrated DU includes the functions of the DU and the RU described above. The RU can be connected to an antenna (ANT).

[0144] The CU and the DU can include a central processing unit (CPU) and a field programmable gate array (FPGA) / graphics processing unit (GPU) / other accelerator. The CPU and the FPGA / GPU / other accelerator are connected through a multi-channel peripheral component interconnect express (PCIe) bus.

[0145] The CU / DU hardware includes a chassis platform, a mainboard, peripherals and cooling equipment. The mainboard contains processing units, memories, internal I / O interfaces and external connection ports. The hardware accelerator design has an interface, and the hardware function components include storage of software, hardware and system debugging interfaces, and a board management controller.

[0146] The DU system is usually implemented using a multi-core processor and one or more hardware accelerators. Part of the DU protocol stack can be implemented in software running on the multi-core processor, and the computation-intensive L1 and L2 functions can be offloaded to the FPGA / GPU-based hardware accelerator; or all L1 functions are offloaded to the FPGA / GPU-based hardware accelerator, and other protocol stack contents are implemented in software running on the processor; or all protocol stacks are implemented in software running on the processor. The hardware accelerator supports interconnection with an X86 or non-X86 processor. Similarly, the accelerator has a multi-channel PCIe interface pointing to the CPU, and is externally connected through a gigabit Ethernet (GbE) connection.

[0147] The RU includes three parts: an O-RAN processing unit (OPU), a digital processing unit (DPU) of the O-RU, and an RF processing unit. The O-RAN processing unit receives an enhanced common public radio interface (eCPRI) frame from the O-RAN fronthaul, and performs the fronthaul interface, the bottommost L1 (encoding, scrambling, modulation, layer mapping, precoding), synchronization, beamforming, and resource unit mapping. The OPU can be implemented as a CPU, FPGA, or application specific integrated circuit (ASIC). The digital processing unit (DPU) of the O-RU performs digital down conversion (DDC), digital up conversion (DUC), crest factor reduction (CFR), and digital pre-distortion (DPD) to improve power amplifier efficiency by reducing the peak to average power ratio (PAPR) / adjacent channel leakage ratio (ACLR) of the RF front end; the DPU can be implemented as an FPGA or ASIC. The RF processing unit of the O-RU includes a transceiver module, up / down converters, power amplifiers (PAs), low noise amplifiers (LNAs), transmit (Tx) / receive (Rx) filters. All conversions between the analog and digital domains (such as digital to analog conversion (DAC) and analog to digital conversion (ADC), for example, RF sampling, frequency conversion using RF, intermediate frequency (IF), and local oscillator (LO) mixing in upconversion and downconversion, etc.) are performed within the transceiver module. It should be understood that the physical and logical partitions within the RF processing unit do not require specific boundaries.

[0148] FIG. 12 is a schematic diagram of a hardware structure of a baseband chip suitable for a terminal device according to an embodiment of the present application. As shown in FIG. 12, the hardware structure can be implemented by a processing system including one or more processors. The processor includes a microprocessor (such as X86, ARM), a microcontroller, a digital signal processor (DSP), an FPGA, a GPU, a programmable logic device (PLD), a state machine, a gated logic, discrete hardware circuits, and other suitable hardware configured to perform various functions. That is, the processor used in the baseband can be used to implement the processes and any one or more of the processes described below.

[0149] The processing system can be implemented with a bus architecture, generally represented by the bus 1202. The bus can include any number of interconnecting buses and bridges, depending on the specific application of the processing system and the overall design constraints. The bus communicatively couples various circuitry including one or more processors (generally represented by the processor 1204, such as the processor #1,..., the processor #N, N being an integer greater than 1), memory, and computer-readable media (generally represented by the computer-readable media 1206, such as the computer-readable media #1,..., the computer-readable media #N). The bus can also link various other circuitry, such as timing sources, peripherals, voltage regulators, and power management circuitry, which are well known in the art, and therefore, will not be further described. A bus interface provides an interface between the bus and a transceiver and between the bus and an interface.

[0150] The transceiver provides a communication interface or means for communicating with various other apparatus over a wireless transmission medium. The transceiver can be coupled to an antenna array, and the transceiver and the antenna array can be used together to communicate with a corresponding network type. At least one interface (e.g., a network interface and / or a user interface) provides a communication interface or means for communication over an internal bus or via an external transmission medium. The transceiver module is capable of implementing transmit functionality and receive functionality. When the transceiver module implements the transmit functionality, it can be referred to as a transmit module (sometimes also referred to as a transmit unit). When the transceiver module implements the receive functionality, it can be referred to as a receive module (sometimes also referred to as a receive unit). The transmit module and the receive module can be the same functional module, which is referred to as a transceiver module, and the transceiver module is capable of implementing the transmit functionality and the receive functionality. Alternatively, the transmit module and the receive module can be different functional modules, and the transceiver module is a general term for these functional modules.

[0151] The processor is responsible for managing the bus and general processing, including the execution of software stored on the computer-readable medium. The software, when executed by the processor, causes the processing system to perform the various functions described below for any particular apparatus.

[0152] The functions that the processor and the memory and the computer-readable medium can implement can be: encoding, decoding, rate matching, de-rate matching, scrambling, descrambling, modulation, demodulation, layer mapping, fast Fourier transform (FFT), inverse fast Fourier transform (IFFT), inverse discrete Fourier transform (IDFT), precoding, resource element (RE) mapping, channel equalization, RE demapping, digital beamforming (BF), adding a cyclic prefix (CP), removing a CP, and the like.

[0153] It can be understood that the above Figs. 11-12 are only simplified schematic diagrams for ease of understanding, and other devices or modules or chips, etc. can also be included, which are not shown in the figures.

[0154] For ease of understanding, the communication method provided by the embodiments of the present application will be described in detail below in conjunction with Figs. 13-26.

[0155] For example, Fig. 13 is a flowchart of a communication method provided by an embodiment of the present application.

[0156] It can be understood that the network device (taking the first network as an example) as shown in Fig. 9 is taken as an example of the execution subject for illustration in the embodiments of the present application, but the embodiments of the present application are not limited to the execution subject for illustration. For example, the method performed by the first network device in the embodiments of the present application can also be implemented by a module (such as a circuit, a processor, a chip or a chip system, etc.) in the first network device, or a logic node, a logic module or software capable of implementing all or part of the functions of the first network device.

[0157] As shown in Fig. 13, the flow of the communication method is as follows:

[0158] S1301, the first network device determines the resource of the reference signal of the first cell according to the first cell number.

[0159] S1302, the first network device sends the reference signal to the terminal device in the first cell according to the resource of the reference signal of the first cell. Correspondingly, the terminal device in the first cell receives the reference signal from the first network device.

[0160] The related content in the above steps S1301-S1302 is described in detail below.

[0161] For the above step S1301:

[0162] The first cell number can be used to uniquely identify the first cell of the first network device, that is, the first cell number is one-to-one corresponding to the first cell, and the first network device can provide services for the first cell. For example, the first cell number can be the physical cell identifier (PCI) of the first cell, which can be represented by a set of consecutive bit numbers. This set of consecutive bit numbers can allow the system to support multiple independent cells operating on the same frequency band, that is, there can be a variety of possible PCIs (related to the value of the set of consecutive bit numbers), for example, a variety of PCIs. The a variety of possible PCIs can be divided into groups of 3, for example, the PCI can satisfy the following relationship: Wherein, may be used to indicate the PCI, may be used to indicate one of the groups, may be used to indicate one of the groups. It can be understood that the above PCI is only an example, and the first cell number is a multiplexing of the existing cell identifier to reduce the implementation complexity of the scheme, or the first cell number can also be represented by a new cell identifier to improve the implementation flexibility, without limitation. For ease of understanding, the following is an example of the first cell number as PCI#1. It can be understood that a network device has 3 cells (i.e., provides services for 3 cells).

[0163] The first cell can belong to one of a plurality of cells, which can be characterized in various forms. For example, the plurality of cells can be characterized by a cell set, a cell list, etc., without limitation. For ease of understanding, the following will be introduced in the subsequent description by taking the plurality of cells as being characterized by a cell set #1, which can include: cell #0, cell #1, cell #2,..., cell #n-1, n being an integer. It can be understood that a cell is a logical concept, and a cell can also be referred to as a carrier or a sector, etc., for representing a region providing a wireless communication service for a terminal device, i.e., a minimum service unit for terminal device access. It can be understood that the plurality of cells can belong to at least two network devices, which can be characterized by a network device set or a network device list. For ease of understanding, the following will be introduced in the subsequent description by taking the at least two network devices as being characterized by a network device set #1.

[0164] In a possible design, any two cells of the plurality of cells have cross-link interference.

[0165] It can be understood that any two cells of the plurality of cells can be adjacent cells (e.g., adjacent in physical location and transmitting signals on the same frequency or different frequencies), and any two adjacent cells of the plurality of cells have cross-link interference. Any two network devices in the network device set #1 also have cross-link interference.

[0166] In a possible design, the reference signal can include at least one of: a CSI-RS, a DMRS, a CRS, an SSB, a PSS, an SSS, or a PT-RS, etc., i.e., multiplexing an existing reference signal to reduce implementation difficulty, or a newly defined reference signal can also be used, without specific limitation. The reference signal can be introduced with reference to the related content in the following step S1302, which will not be repeated here.

[0167] It can be understood that the resource of the reference signal of each cell in the plurality of cells can be determined according to the cell number of each cell, based on the fact that each cell in the plurality of cells has a unique corresponding cell number. In this way, the resource of the reference signal corresponding to each cell in the plurality of cells can be different, i.e., resource randomization or resource orthogonalization is achieved. In other words, the resources of the reference signals of any two cells in the plurality of cells can be different.

[0168] In a possible design, the first cell number is different, and the resource of the reference signal of the first cell is different.

[0169] For example, the first cell is numbered with a first cell physical cell identifier (PCI#1), and different values of the first cell PCI#1 (e.g., 0-503) correspond to different resources of the reference signal of the first cell. The resources of the reference signal of the first cell can include at least one of the following: time domain resources, frequency domain resources, code domain resources, or resources of other possible dimensions, without limitation.

[0170] The following describes the specific implementation of the first network device determining the resources of the reference signal of the first cell according to the first cell number, with the following case as an example.

[0171] Case 1: The resources of the reference signal of the first cell include time domain resources.

[0172] In a possible design, the first network device can determine the time domain resources of the reference signal of the first cell according to the first cell number and a measurement period of the reference signal.

[0173] It can be understood that the reference signal can be periodically transmitted, semi-persistently transmitted, or non-periodically transmitted. Based on periodic transmission and semi-persistent transmission (activated through signaling), the reference signal is configured with a transmission period, which can be the measurement period described above. The network device can transmit the reference signal to the terminal device in each cell served by the network device on the configured transmission period. Based on non-periodic transmission, the network device does not configure a transmission period, but explicitly notifies each transmission of the reference signal through signaling. The time duration of each transmission of the reference signal can also be understood as the measurement period, which is not limited in the embodiments of the present application.

[0174] The first network device can determine the time domain resources of the reference signal of the first cell according to the first cell number and a measurement period of the reference signal, that is, the specific time domain position of the time domain resources of the reference signal of the first cell in the measurement period. Before introducing the specific implementation, the implementation process of determining the specific time domain position in the measurement period is introduced.

[0175] In a possible design, the method described above can further include the following:

[0176] The first network device obtains a starting time domain position of the measurement period.

[0177] The first network device determines the time domain resource position of the measurement period according to the starting time domain position and the length of the measurement period.

[0178] The starting time domain position can also be understood as a reference time (position) of the measurement period, and can be preconfigured or predefined, such as being predefined as a starting time domain position of a TDD period or a reference time of remote interference management (RIM) in a multiplexing protocol, such as January 1, 1990 00:00:00, etc. Alternatively, the reference time can be indicated by a center node, which can be any one of the network device set #1 (except the first network device) described above, or can be any other possible node or device, and the embodiments of the present application do not limit this.

[0179] The length of the measurement period can be preconfigured or predefined, such as being predefined as an integer multiple of the length of the TDD period, a least common multiple or a common multiple of the original reference signal measurement periods of the plurality of cells, etc., without limitation. Alternatively, the length of the measurement period can be indicated by a center node, which can be any one of the network device set #1 (except the first network device) described above, or can be any other possible node or device, and the embodiments of the present application do not limit this.

[0180] Alternatively, the first network device can determine the length of the measurement period of the reference signal corresponding to the first cell according to the needs of the end device in the first cell. It can be understood that the length of the measurement period of the reference signal corresponding to each of the other cells in the plurality of cells is obtained in a similar manner to the length of the measurement period of the reference signal corresponding to the first cell, and can be understood by reference, and will not be described again. It can be understood that if there are cells with different measurement periods of the reference signal in the plurality of cells, such as cell #0 and cell #1, the CSI-RS measurement resources between cell #0 and cell #1 can conflict. For ease of understanding, the following will be described with an example in which the measurement periods of the reference signals corresponding to each of the cells in the cell set #1 are the same.

[0181] Based on the above description, the first network device can obtain the starting time domain position of the measurement period and the length of the measurement period, and then determine the time domain resource position of the measurement period according to the starting time domain position of the measurement period and the length of the measurement period. For example, assuming that the length of the measurement period is A and the starting time domain position is a, the time domain resource position of the measurement period can be (a, a+T). It can be understood that if the reference signal is periodically transmitted, the time domain resource position of one measurement period (such as measurement period #1) is determined, and the time domain resource position of other measurement periods can be obtained according to the time domain resource position of measurement period #1.

[0182] For example, as shown in FIG. 14, assuming that the length of the measurement period is 20 slots, and the starting time domain position is slot #0, the time domain resource position of the first (reference signal) measurement period can be slot #0-slot #19, the time domain resource position of the second measurement period can be slot #20-slot #39, and so on. In this way, the specific time domain resource position of each (reference signal) measurement period can be obtained. It can be understood that the above is described by taking the slot as an example of the units of A and a. A and a can also be other possible units or granularities, such as seconds (s), milliseconds (ms), microseconds (us), nanoseconds (ns), frames, subframes, symbols, and the like. The implementation principle is similar, and can be understood with reference, and is not described in detail. It can be understood that one frame can be composed of 10 subframes, and the time length of each subframe can be fixed, for example, 1 ms. The number of slots contained in one subframe can depend on the sub-carrier spacing (SCS). One slot can be composed of 14 orthogonal frequency division multiplexing (OFDM) symbols.

[0183] In combination with the above description, the specific implementation of determining the time domain resource of the reference signal of the first cell by the first network device according to the first cell number and the measurement period of the reference signal is described below by taking the following way as an example.

[0184] Way 1: The time domain resource of the reference signal of the first cell can satisfy the following relationship, that is, formula (1): T=T0+X mod T1; (1)

[0185] Wherein, T can be the time domain resource (position) of the reference signal of the first cell; T0 can be the reference time domain resource (position), the position of the reference time domain resource can be within the measurement period, T0 can be predefined or preconfigured, or indicated by the network, and the like, without limitation; X can be the first cell number, such as PCI #1; T1 can be the number of time units contained in the measurement period, that is, the length of the measurement period can be represented by the number of time units contained, and one time unit can correspond to one cell. Mod can represent the modulus.

[0186] The time unit can include at least one of the following: frame, subframe, slot, or symbol, and the like, without limitation. Based on the relationship among frames, subframes, slots, and symbols, the time unit can be represented by one or more of the above.

[0187] In a possible design, the time units included in the measurement period can satisfy any one of the following conditions: the time units are uplink time units or downlink time units; or, the time units are downlink time units. The following is taken as an example for detailed description.

[0188] Implementation 1: The time units are uplink time units or downlink time units.

[0189] In implementation 1, T1 can be the number of all time units included in the measurement period, and there can be time units that are unavailable (for one or more cells) in the time units included in the measurement period. For example, when a time unit (which can be referred to as time unit #1) is an uplink time unit, the cell allocated to the time unit #1 cannot send a reference signal.

[0190] Implementation 2: The time units are downlink time units.

[0191] In implementation 2, T1 can be the number of actually available time units included in the measurement period, i.e., each time unit is a downlink time unit and can be used for a cell to send a reference signal. In this way, the situation that some cells cannot send a reference signal in implementation 1 can be avoided, and flexibility can be achieved.

[0192] It can be understood that the above formula (1) is described by taking the first cell as an example, and the time domain resources of the reference signals of other cells in the cell set #1 can also be calculated using similar principles, i.e., X in the above formula (1) is replaced by the cell numbers of the other cells in the cell set #1. In this way, the specific time domain positions of the time domain resources of the reference signals of each cell in the cell set #1 in the measurement period can be obtained.

[0193] For example, based on implementation 1, taking a slot as an example, it is assumed that the measurement period includes B slots (B is an integer, and the B slots can be uplink slots or downlink slots), i.e., T1 can be equal to B, and the time domain resource positions of the B slots can be slot #0-slot #B-1. T0 can be the bth (1≤b≤B) slot in the B slots; the cell set #1 includes: cell #0, cell #1, cell #2,..., and cell #n-1, 1≤n≤B.

[0194] Assume that in slot#0-slot#B-1, slot#4, slot#9, etc. are uplink slots (B-1≥9); b=1, i.e. T0 is the 1st slot in the B slots, i.e. slot#0. As shown in FIG. 15, cell#0 can correspond to slot#0 (i.e. the time domain resource of the reference signal of cell#0 is slot#0), cell#1 can correspond to slot#1, cell#2 can correspond to slot#2, cell#3 can correspond to slot#3, cell#4 can correspond to slot#4,..., and cell#n-1 can correspond to slot#n-1. Take cell#4 and cell#9 as examples. Cell#4 and cell#9 cannot send reference signals.

[0195] For example, based on the above-mentioned implementation 2, taking slot as a time unit, assume that the number of all slots contained in a measurement period is C, the time domain resource positions of the C slots can be slot#0-slot#C-1, the number of downlink slots in the C slots can be D (C≥D), i.e. T1 can be equal to C (excluding uplink slots); T0 can be the cth slot (1≤c≤C) in the C slots; cell set#1 includes: cell#0, cell#1, cell#2,..., and cell#n-1, 1≤n≤D, n is an integer.

[0196] Assume that in slot#0-slot#C-1, slot#4, slot#8, slot#9, etc. are uplink slots (C-1≥9); c=1, i.e. T0 is the 1st slot in the D slots, i.e. slot#0. As shown in FIG. 16, cell#0 can correspond to slot#0 (i.e. the time domain resource of the reference signal of cell#0 is slot#0), cell#1 can correspond to slot#1, cell#2 can correspond to slot#2, cell#3 can correspond to slot#3, cell#4 can correspond to slot#5, cell#5 can correspond to slot#6, cell#6 can correspond to slot#7, cell#7 can correspond to slot#10,..., and so on. That is, in the implementation 2, the slots that cannot be used by each cell, such as slot#4, slot#8-slot#9, etc. are excluded.

[0197] It can be understood that the above-mentioned is to take the first time unit in a measurement period as a reference time domain resource, thus the utilization rate of resources can be improved and resource waste can be avoided. When the reference time domain resource is not the first time unit in a measurement period, some cells in the cell set#1 can not obtain the time domain resource corresponding to the reference signal thereof in the measurement period, for example, if the reference signal is periodically sent, the time domain resource of the reference signal of the some cells can be configured to the next measurement period, resulting in resource waste.

[0198] In this case, in order to reduce the waste of resources, the above formula (1) can be replaced by the following formula (2): T = (T0+X mod T1) mod T1; (2)

[0199] It can be understood that the above formula (2) is introduced by taking the first cell as an example, and the time domain resources of the reference signals of other cells in the plurality of cells can also be calculated using similar principles, that is, replacing X in the above formula (2) with the respective cell numbers of the other cells in the cell set #1. In this way, each cell of the cell set #1, or as many cells as possible in the cell set #1, can be allocated to the respective time domain resources of the reference signals within the measurement period, thereby improving the utilization rate of resources and avoiding resource waste. The specific implementation of the formula (2) is similar to the implementation of the above formula (1), and can be understood with reference, and will not be described in detail.

[0200] In combination with the above introduction, X mod T1 in the above formula (1) and formula (2) can be represented as the offset or deviation value between the time domain resources of the reference signals of the first cell and the reference time domain resources, as follows: offest1 and T offest2 .

[0201] Based on the above implementation 1, T offest1 can satisfy the following relationship, that is, formula (3): T offest1 =X mod T1; (3)

[0202] Based on the above implementation 2, T offest2 can satisfy the following relationship, that is, formula (4): T offest2 =X mod T'1; (4)

[0203] It can be understood that in the above formula (3), T1 can be the number of all time units contained in the measurement period; in the above formula (4), T'1 can be the number of actually available time units contained in the measurement period. Based on the above formula (1) or formula (2), the first network device can directly obtain the time domain resources of the reference signals of the first cell, and based on the above formula (3) or formula (4), the first network device can only need to calculate T offest1 or T offest2 , without considering the reference time domain resources. Then, the first network device can determine the time domain resources of the reference signals of the first cell according to the T offest1 or T offest2 and the reference time domain resources.

[0204] It should be understood that the T offest2The relative bias can be obtained by excluding or eliminating the time units in which the first cell is unavailable in the measurement period, such as the uplink time units, from the time-domain resource of the reference signal of the first cell. After the first network device obtains T offest2 Afterwards, the time of sending and / or receiving the reference signal between at least two network devices to which the multiple cells belong needs to be kept consistent according to the difference in frame timing between the cells (i.e., the multiple cells), or in other words, the frame timing between the cells needs to be kept synchronized.

[0205] That is, the first network device needs to convert T offest2 into T offest1 . For example, as shown in FIG. 16, taking the first cell, cell #4, as an example, the T offest2 = 4 of the cell #4 corresponds to T offest2 = 4 obtained by excluding the uplink slot #4, at this time, the first network device needs to convert the T offest2 into the absolute bias, i.e., convert T offest2 into T offest1 , T offest1 = T offest2 + 1 = 5, so that the T offest2 of the cell #4 can be converted into T offest1 . It can be understood that the above is an example of converting T offest1 and T offest2 , other cells can refer to the implementation principle of the relative bias and the absolute bias for conversion, and will not be described here.

[0206] Based on the above description, the above method 1 is based on time units as granularity, that is, the above T, T0, T offest1 , and T offest2 may be based on time units as granularity. For example, the time units can be slots, and T, T0, T offest1 , and T offest2 are also slot granularity. It can be understood that the above T, T0, T offest1 , and T offest2 may also be s, ms, us, ns, etc. granularity, and the implementation principle is similar, which can be understood, and will not be described here.

[0207] Method 2: The time-domain resource of the reference signal of the first cell can satisfy the following relationship, i.e., formula (5): T = T0 + (X mod T2) × K + k1; (5)

[0208] Wherein, T can be the time domain resource of the reference signal of the first cell, T0 can be the reference time domain resource, X can be the first cell number, mod represents the modulus, and specific descriptions can refer to the descriptions of the related contents in the above manner 1, which will not be repeated here.

[0209] T2 can be the number of time units contained in the measurement period, that is, the length of the measurement period can be represented by the number of time units contained. The time units contained in the measurement period can contain K sub-time units, in other words, each time unit can contain K sub-time units, and each cell (in the above plurality of cells) can occupy one time unit, that is, K sub-time units. The time unit can include at least one of the following: frame, subframe, time slot, or symbol, etc., without limitation. For example, assuming that the time unit is a frame, the sub-time unit can be one or more of a subframe, a time slot, or a symbol; assuming that the time unit can be a subframe, the sub-time unit can be a time slot and / or a symbol; assuming that the time unit can be a time slot, the sub-time unit can be a symbol; assuming that the time unit is a symbol, the sub-time unit can be a time domain resource of other possible dimensions, without limitation. 0≤k1≤K-1 and k1 can be an integer, and the specific value of k1 is not limited in the embodiments of the present application.

[0210] In a possible design, the K sub-time units can satisfy any of the following: the sub-time unit is an uplink sub-time unit or a downlink sub-time unit; or, the sub-time unit is a downlink sub-time unit; or, the sub-time unit is a downlink time unit, and the K sub-time units are continuous in time domain. The following is taken as an example for specific description.

[0211] Implementation 3: The sub-time unit is an uplink sub-time unit or a downlink time unit.

[0212] In implementation 3, the K sub-time units contained in each time unit can be uplink sub-time units or downlink sub-time units, that is, there can be (multiple cells) unavailable sub-time units in the K sub-time units, for example, taking time unit #2 as an example, time unit #2 contains K sub-time units, if there are a uplink time units (0≤a≤K-1) in the K sub-time units, it will cause the cell allocated on the time unit #2 to be unable to send reference signals on the a sub-time units, and can only send reference signals on the other K-a sub-time units except the a sub-time units, that is, the downlink time domain resource of the cell is less, or even there is no available time unit. For example, when a=K, the K sub-time units contained in time unit #2 are all uplink time units, which causes the cell allocated on the time unit #2 to be unable to send reference signals.

[0213] Implementation 4: The sub-time unit is a downlink sub-time unit.

[0214] In implementation 4, each time unit contains K sub-time units which are actually available time units, i.e., each time unit contains K sub-time units which are downlink time units and can be used for a cell to transmit a reference signal. In this way, the situation that some cells cannot transmit a reference signal or the number of sub-time units available for transmitting a reference signal is small can be avoided. Based on implementation 4, the time domain positions of the K sub-time units contained in each time unit can be discrete. For example, taking time unit #3 as an example, time unit #3 contains K sub-time units, and the bth (1≤b≤K) sub-time unit and the b+1th sub-time unit in the K sub-time units are discrete in the time domain, which will cause the phase of the reference signal transmitted by the cell allocated on the time unit #3 to be discontinuous, thereby affecting the accuracy of the measurement result of the reference signal and causing the beamforming effect to be weakened.

[0215] Implementation 5: The sub-time units are downlink sub-time units, and the time domain positions of the K sub-time units are continuous.

[0216] In implementation 5, each time unit contains K sub-time units which are actually available time units, i.e., each time unit contains K sub-time units which are downlink time units and the time domain positions of the K sub-time units are continuous, and can be used for a cell to transmit a reference signal. In this way, the situations that some cells cannot transmit a reference signal or the number of sub-time units available for transmitting a reference signal is small and the phase of the reference signal transmitted by some cells is discontinuous can be avoided, and flexibility is achieved.

[0217] It can be understood that the above formula (5) is introduced by taking the first cell as an example, and the time domain resources of the reference signal of other cells in the cell set #1 can also be calculated using similar principles, i.e., replacing X in the above formula (5) with the cell numbers of the respective other cells in the cell set #1. In this way, the specific time domain positions of the time domain resources of the reference signal of each cell in the cell set #1 in the measurement period can be obtained.

[0218] For example, based on implementation 3 above, taking a time unit as a subframe, a sub-time unit as a slot, and K=2 as an example, it is assumed that the length of the measurement period can be E slots, i.e., T1 can be equal to E / 2, and the time domain resource positions of the E slots can be slot#0-slot#E-1. T0 can be the e-th (1≤e≤E) slot in the E slots; and the plurality of cells can be: cell #0, cell #1, cell #2,..., cell #n-1, 1≤n≤E / 2.

[0219] Assuming that in slot#0-slot#E-1, slot#4, slot#9, and the like are uplink slots (E-1≥9); e=1, that is, T0 is the first slot in the E slots, that is, slot#0, and k1=0. As shown in FIG. 17, cell#0 can correspond to slot#0 and slot#1 (that is, the time domain resources of the reference signal of cell#0 are slot#0 and slot#1), cell#1 can correspond to slot#2 and slot#3, cell#2 can correspond to slot#4 and slot#5,..., and cell#n can correspond to slot#2n and slot#2n+1 (slot#2n and slot#2n+1 belong to slot#0-slot#E-1). Taking cell#2 as an example, cell#2 can only send a reference signal on slot#5, and compared with cell#0 and cell#1, the downlink time domain resources of cell#2 are less.

[0220] For example, based on the above implementation 4, taking K=2 as an example, assuming that the number of all slots contained in the measurement period is F, and the time domain resource positions of the F slots can be slot#0-slot#F-1. Taking 2 downlink slots as one available slot group, denoted as available slot group#1, the number of the F slots containing the available slot group#1 is G (the number of all downlink slots contained in the measurement period is 2G), that is, T1 can be equal to G: T0 can be the fth slot (1≤f≤F) in the F slots; cell set#1 includes: cell#0, cell#1, cell#2,..., cell#n-1, 1≤n≤G.

[0221] Assuming that in slot#0-slot#F-1, slot#4, slot#8, slot#9, and the like are uplink slots (F-1≥9); f=1, that is, T0 is the first slot in the F slots, that is, slot#0, and k1=0. As shown in FIG. 18, cell#0 can correspond to slot#0 and slot#1 (that is, the time domain resources of the reference signal of cell#0 are slot#0 and slot#1), cell#1 can correspond to slot#2 and slot#3, cell#2 can correspond to slot#5 and slot#6, cell#3 can correspond to slot#7 and slot#10,..., and so on, which will not be repeated. Taking cell#2 and cell#3 as examples, cell#2 sends a reference signal on slot#5 and slot#6, that is, slot#4 that cannot be used is removed; cell#3 sends a reference signal on slot#7 and slot#10, and slot#8 and slot#9 that cannot be used are removed, at this time, the two slots in which cell#3 sends a reference signal are discrete in the time domain.

[0222] For example, based on the above-mentioned implementation 5, taking a subframe as a time unit, a time slot as a sub-time unit, and K=2 as an example, assuming that the number of all slots contained in a measurement period is H, the time domain resource positions of the H slots can be slot#0-slot#H-1. Two downlink slots with two consecutive time domain positions are taken as one available time slot group, denoted as available time slot group#2, and the number of available time slot group#2 contained in the H slots is I, that is, T1 can be equal to I: T0 can be the hth slot (1≤h≤H) in the H slots; the cell set#1 includes: cell#0, cell#1, cell#2,..., cell#n-1, 1≤n≤I.

[0223] Assuming that in slot#0-slot#H-1, slot#4, slot#8, slot#9, and the like are uplink time slots; h=1, that is, T0 is the first time slot in the H slots, that is, slot#0, and k1=0. As shown in FIG. 19, cell#0 can correspond to slot#0 and slot#1 (that is, the time domain resources of the reference signals of cell#0 are slot#0 and slot#1), cell#1 can correspond to slot#2 and slot#3, cell#2 can correspond to slot#5 and slot#6, cell#3 can correspond to slot#10 and slot#11,..., and the like, and details are not repeated. Taking cell#2 and cell#3 as examples, cell#2 transmits reference signals on slot#5 and slot#6, that is, slot#4, which is not available for each cell, is removed; cell#3 transmits reference signals on slot#10 and slot#11, that is, slot#8 and slot#9, which are not available for each cell, and discrete slot#7 are removed, and at this time, the two slots in which cell#3 transmits reference signals are continuous in the time domain.

[0224] It can be understood that the above is to take the first time unit in the measurement period as the reference time domain resource, and thus the utilization rate of resources can be improved and resource waste can be avoided. When the reference time domain resource is not the first time unit in the measurement period, there can be a plurality of cells in which some cells cannot obtain the time domain resources corresponding to the reference signals in the measurement period, for example, if the reference signals are periodically transmitted, the time domain resources of the reference signals of the some cells can be configured to the next period, which can cause resource waste.

[0225] In this case, in order to reduce resource waste, the above-mentioned formula (5) can be replaced by the following formula (6): T=(T0+(X mod T2)×K+k1) mod T2; (6)

[0226] It can be understood that the above formula (6) is introduced by taking the first cell as an example, and the time domain resources of the reference signals of other cells in the plurality of cells can also be calculated using similar principles, that is, replacing X in the above formula (6) with the respective cell numbers of the other cells in the plurality of cells, and details are not repeated. In this way, each of the plurality of cells, or as many cells as possible in the cell set #1, can be allocated to the respective time domain resources of the reference signals within the measurement period, so as to improve the utilization rate of resources and avoid resource waste. The specific implementation of the formula (6) is similar to the implementation of the above formula (5), and can be understood by reference, and details are not repeated.

[0227] In combination with the above introduction, X mod T2 in the above formula (5) and formula (6) can be represented as the offset or deviation value between the time domain resources of the reference signals of the first cell and the reference time domain resources, as follows: offest3 offest4 offest5 .

[0228] Based on the above implementation 3, T offest3 may satisfy the following relationship, that is, formula (7): T offest3 = X mod T2; (7)

[0229] Based on the above implementation 4, T offest4 may satisfy the following relationship, that is, formula (8): T offest4 = X mod T'2; (8)

[0230] Based on the above implementation 5, T offest5 may satisfy the following relationship, that is, formula (9): T offest5 = X mod T''2; (9)

[0231] It can be understood that in the above formula (7), T2 can be the number of all time units contained in the measurement period, and each time unit contains K sub-time units which can be uplink sub-time units or downlink sub-time units; in the above formula (8), T'2 can be the number of actually available time units contained in the measurement period, and each available time unit contains K sub-time units which are all downlink sub-time units; in the above formula (9), T''2 can be the number of actually available time units contained in the measurement period, and each available time unit contains K sub-time units which are all downlink sub-time units and are continuous in the time domain. Based on the above formula (5) or formula (6), the first network device can directly obtain the time domain resources of the reference signals of the first cell, and based on the above formula (7) to formula (9), the first network device can only need to calculate T offest3 offest4 offest5 ​​​​without considering the reference time domain resource. Then, the first network device can determine the time domain resource of the reference signal of the first cell according to the T offest3 , the T offest4 or the T offest5 , and the reference time domain resource.

[0232] It should be understood that the T offest4 may be a relative offset, i.e., the offset between the time domain resource of the reference signal of the first cell and the reference time domain resource after excluding or removing the sub-time unit, such as the uplink time unit, in the measurement period in which the first cell is unavailable; the T offest5 may be a relative offset, i.e., the offset between the time domain resource of the reference signal of the first cell and the reference time domain resource after excluding or removing the sub-time unit in the measurement period in which the first cell is unavailable and the discontinuous sub-time unit. After the first network device obtains the T offest4 or the T offest5 , it needs to keep the time of sending and / or receiving the reference signal between at least two network devices to which the plurality of cells belong consistent, or in other words, ensure that the inter-cell frame timing is synchronized. That is, the first network device needs to convert the T offest4 or the T offest5 into the T offest3 , and the implementation principle is similar to the conversion between the T offest2 and the T offest1 , which can be understood with reference, and will not be described in detail.

[0233] Based on the above introduction, the above-mentioned mode 2 is in the granularity of the sub-time unit, i.e., the T, the T0, the T2, the k1, the T offest3 , the T offest4 , and the T offest5 may be in the granularity of the sub-time unit. For example, the sub-time unit can be a slot, and the T, the T0, the T2, the k1, the T offest3 , the T offest4 , and the T offest5 are also in the granularity of the slot. It can be understood that the T, the T0, the T2, the k1, the T offest3 , the T offest4 , and the T offest5 may also be in the granularity of s, ms, us, ns, etc., and the implementation principle is similar, which can be understood with reference, and will not be described in detail.

[0234] Mode 3: The measurement period is a TDD single period. The time domain resource of the reference signal of the first cell can satisfy the following relationship, i.e., formula (10): T=T0+X mod(T3 / T4)+k2; (10)

[0235] Wherein, T can be the time domain resource of the reference signal of the first cell, T0 can be the reference time domain resource, X can be the cell number, mod represents the modulo, and specific descriptions can be referred to the descriptions of the related content in the above manner 1, which will not be repeated here.

[0236] T3 can be the length of the measurement period, and the unit (granularity) can be s, ms, μs, ns, etc. without limitation. It can be understood that the length of the measurement period can also be represented by the number of time units contained in the measurement period, wherein the time unit can be at least one of the following: frame, subframe, slot, or symbol, etc. without limitation. T4 is the length of a TDD single period, and the unit (granularity) can be s, ms, μs, ns, etc. without limitation. It can be understood that the length of the TDD single period can also be represented by the number of time units contained in a TDD single period, for example, the time unit can be at least one of the following: frame, subframe, slot, or symbol, etc. without limitation. That is, T3 / T4 can represent the number of TDD single periods contained in the measurement period, that is, formula (10) is in the granularity of TDD single period. 0≤k2≤T4-1 and k2 is an integer.

[0237] In the case where k2 is not an integer, the above formula (10) can also be replaced by the following formula (11): T=T0+(X mod(T3 / T4))×T4+k2; (11)

[0238] It can be understood that in the above formula (10)-(11), the units (or granularities) of T, T0, T3, T4, and k2 are the same, and for ease of understanding, the following unit is ms as an example for subsequent description.

[0239] For example, assuming that the length of the measurement period is J ms, that is, T3 can be equal to J ms, the time domain resource position of the J ms can be 0-J ms, 0≤T0≤J ms; the length of a TDD single period is j ms, 0≤j≤J ms, and it is assumed that each TDD single period (i ms) contains 5 slots (including 4 downlink (D) slots and one uplink slot (U)), and the distribution of the 5 slots in the time domain is: DDDDU, and the 5 slots in each TDD single period can be recorded as slot#0-slot#4; the plurality of cells can be: cell#0, cell#1, cell#2,..., cell#n-1, 1≤n≤J / j.

[0240] Assuming that T0 is equal to 0 ms and k2 = 0, as shown in FIG. 20, cell #0 can correspond to slot #0-slot #3 in the first TDD single period (i.e., the time domain resource of the reference signal of cell #0 is slot #0-slot #3 in the first TDD period), cell #1 can correspond to slot #0-slot #3 in the second TDD single period (relative time slot, absolute time slot position is slot #5-slot #8), cell #2 can correspond to slot #0-slot #3 in the third TDD single period (relative time slot, absolute time slot position is slot #10-slot #11), and so on. In this way, cell #0, cell #1, cell #2,..., and cell #n-1 can all obtain the time domain resource of the respective reference signal.

[0241] In combination with the above description, X mod(T3 / T4) in the above formula (10) and formula (11) can be represented as the offset or deviation value between the time domain resource of the reference signal of the first cell and the reference time domain resource, as follows: offest6 offest6 The following relationship can be satisfied, i.e., formula (12): offest6 T offest6 = X mod(T3 / T4); (12)

[0242] It can be understood that, based on the above formula (10) and formula (11), the first network device can directly obtain the time domain resource of the reference signal of the first cell; and based on the above formula (12), the first network device can only need to calculate T offest6 , without considering the reference time domain resource. Subsequently, the first network device can determine the time domain resource of the reference signal of the first cell according to the T (TDD，1) , and the reference time domain resource.

[0243] Method 4: the measurement period is a TDD double period; the time domain resource of the reference signal of the first cell can satisfy the following relationship, i.e., formula (13):

[0244] When PCI mod 2 = 0, the reference signal of the first cell can correspond to the first TDD period, 0≤k3≤T (TDD，2) -1 and k3 is an integer; when PCI mod 2≠0, the reference signal of the first cell can correspond to the second TDD period, 0≤k3≤T (TDD，1) -1 and k3 is an integer.

[0245] T can be a time domain resource of a reference signal of the first cell, T0 can be a reference time domain resource, X can be a cell number, mod represents a modulo operation, and details can be understood with reference to the description of the related content in the above manner 1, and details are not described herein again. T5 can be a length of a measurement period, and a unit (granularity) can be s, ms, μs, ns, etc., without limitation. It can be understood that the length of the measurement period can also be represented by the number of time units included in the measurement period, where the time unit can be at least one of the following: frame, subframe, slot, or symbol, etc., without limitation.

[0246] T (TDD，1) The first TDD period can be a length of a first TDD period (first in the TDD double period), and a unit (granularity) can be s, ms, μs, ns, etc., without limitation. It can be understood that the length of the first TDD period can also be represented by the number of time units included in the first TDD single period, for example, the time unit can be at least one of the following: frame, subframe, slot, or symbol, etc., without limitation.

[0247] T (TDD，2) The second TDD period can be a length of a second TDD period (second in the TDD double period), and a unit (granularity) can be s, ms, μs, ns, etc., without limitation. It can be understood that the length of the second TDD period can also be represented by the number of time units included in the second TDD single period, for example, the time unit can be at least one of the following: frame, subframe, slot, or symbol, etc., without limitation.

[0248] That is, T4 / (T (TDD，1) +T (TDD，2) ) can represent the number of TDD double periods included in the measurement period, that is, formula (13) is in the granularity of the TDD double period. 0≤k2≤T4-1 and k2 is an integer. It can be understood that T (TDD，1) and T (TDD，2) may be the same or different, without limitation.

[0249] In the case where k2 is not an integer, the above formula (13) can also be replaced by the following formula (14):

[0250] It can be understood that in the above formula (13)-(14), T, T0, T5, T (TDD，1) , T (TDD，2) and k3 have the same unit (or granularity), and for ease of understanding, the following takes ms as an example for subsequent introduction.

[0251] For example, assume that the length of the measurement period is J ms, i.e., T5 can be equal to R ms, the time domain resource position of the R ms can be 0-R ms, 0≤T0≤R ms; assume that the length of the first TDD period and the length of the second TDD period are both r ms, 0≤2r≤J ms; the first TDD period contains 5 slots (containing 4 downlink (D) slots and one uplink slot (U)), the distribution of the 5 slots in the time domain is: DDDD U, the 5 slots in each first TDD period can be recorded as slot#0-slot#4 (relative time domain position); the second TDD period contains 5 slots (containing 3 downlink (D) slots and 2 uplink slots (U)), the distribution of the 5 slots in the time domain is: DDDUU, the 5 slots in each second TDD period can be recorded as slot#0-slot#4 (relative time domain position); the plurality of cells can be: cell#0, cell#1, cell#2,..., cell#n-1, 1≤n≤R / r.

[0252] Assume that T0 is equal to 0 ms, k3=0. As shown in FIG. 21, cell#0 can correspond to slot#0-slot#3 in the first TDD period (i.e., the time domain resource of the reference signal of cell#0 is slot#0-slot#3 in the first TDD period), cell#1 can correspond to slot#0-slot#2 in the second TDD period (relative slot, absolute slot position is slot#5-slot#7), cell#2 can correspond to slot#0-slot#3 in the first TDD period (relative slot, absolute slot position is slot#10-slot#13), and so on. In this way, cell#0, cell#1, cell#2,..., cell#n-1 can all obtain the time domain resource of the respective reference signal.

[0253] In combination with the above introduction, the T in the above formula (13) and formula (14) can be characterized as the offset or deviation value between the time domain resource of the reference signal of the first cell and the reference time domain resource, such as the following T offest7 , T offest7 can satisfy the following relationship, i.e., formula (15):

[0254] It can be understood that, based on the above formula (13) and formula (14), the first network device can directly obtain the time domain resource of the reference signal of the first cell; and based on the above formula (14), the first network device can only need to calculate T offest7 , without considering the reference time domain resource. Then, the first network device can determine the time domain resource of the reference signal of the first cell according to the T offest7 and the reference time domain resource.

[0255] It should be understood that the above is introduced in the manner 1-manner 4 as an example, and there can be coupling between the above manner 1-manner 4. Exemplarily, the following is introduced in detail in the following two ways as an example.

[0256] Manner 5 (corresponding to the above manner 1 and manner 3 coupling, or manner 2 and manner 3 coupling): The time domain resource of the reference signal of the first cell can satisfy the following relationship, that is, formula (16):

[0257] Wherein, T can be the time domain resource of the reference signal of the first cell, T0 can be the reference time domain resource, X can be the cell number; L=T8 / M, T8 can be the number of actual available time units in one TDD single period (that is, the uplink time unit is excluded, and the time unit can be slot), M can represent that the offset granularity is M time units, that is, the number of time units that each cell can occupy, 0≤M≤T8, M is an integer; P1 can be the length of the measurement period (such as the unit can be ms), P TDD Can be the length of the TDD single period (such as the unit can be ms); T TDD Can be the number of (all) time units (such as slot) contained in the TDD period; 0≤k4≤M, k4 is an integer. Mod can represent the modulus.

[0258] Exemplarily, it is assumed that the length of the measurement period is P ms, that is, P1 can be equal to P ms, and the time domain resource position of the P ms can be 0-P ms, 0≤T0≤P ms; the length of one TDD single period is p ms, 0≤p≤P ms, it is assumed that each TDD single period contains 5 slots (containing 4 downlink (D) slots and one uplink slot (U)), and the distribution of the 5 slots in the time domain is: DDDDU, the 5 slots in each TDD single period can be recorded as slot#0-slot#4; T8=4, M=2.

[0259] It is assumed that T0 is equal to 0 ms, and k4=0. As shown in FIG. 22, cell#0 can correspond to slot#0-slot#1 in the first TDD single period (that is, the time domain resource of the reference signal of cell#0 is slot#0-slot#1 in the first TDD single period), cell#1 can correspond to slot#2-slot#3 in the first TDD single period, cell#2 can correspond to slot#0-slot#1 in the second TDD single period (relative slot, absolute slot position is slot#5-slot#6), and so on. In this way, cell#0, cell#1, cell#2,..., and cell#n-1 can all obtain the time domain resource of the respective reference signal.

[0260] In combination with the above description, the time domain resource of the reference signal of the first cell in the above formula (16) can be characterized as an offset or deviation value between the time domain resource of the reference signal and the reference time domain resource, as follows T offest8 offest8 The above formula (17) can satisfy the following relationship:

[0261] It can be understood that, based on the above formula (16), the first network device can directly obtain the time domain resource of the reference signal of the first cell; and based on the above formula (17), the first network device can only need to calculate T offest8 without considering the reference time domain resource. Then, the first network device can determine the time domain resource of the reference signal of the first cell according to the T offest8 and the reference time domain resource.

[0262] It can be understood that the specific implementation of the manner 5 can refer to the related content described in the above manners 1 to 3, and details are not described herein.

[0263] Manner 6 (corresponding to the coupling of the above manners 1 and 4, or the coupling of the above manners 2 and 4): The time domain resource of the reference signal of the first cell can satisfy the following relationship, i.e., formula (18) or formula (19):

[0264] When

[0265] When

[0266] wherein, T can be the time domain resource of the reference signal of the first cell, T0 can be the reference time domain resource, and X can be the cell number; L1=T9 / N1, T9 can be the number of actually available time units (i.e., excluding uplink time units, and the time unit can be a slot) in a first TDD period, N1 can be a bias granularity of N1 time units in the first TDD period, 0≤N1≤T9, and N1 is an integer; L2=T 10 / N2, T 10 may be the number of actually available time units (i.e., excluding uplink time units, and the time unit can be a slot) in a second TDD period, N2 can be a bias granularity of N2 time units in the second TDD period, 0≤N2≤T 10 , N2 is an integer; and P2 can be the length of a measurement period (e.g., in ms).

[0267] P (TDD，1) may be the length of a first TDD period (e.g., in ms; P (TDD，2) ​​T9 can be the length of the second TDD single period (e.g., in ms); T (TDD，1) T8 can be the number of (all) time units (e.g., slots) contained in the first TDD period; T (TDD，2) T9 can be the number of (all) time units (e.g., slots) contained in the second TDD period; 0≤k5≤N1, k5 is an integer; 0≤k6≤N2, k6 is an integer. Mod can represent modulo.

[0268] For example, assuming the length of the measurement period is Q ms, i.e., P1 can be equal to Q ms, the time domain resource location of the Q ms can be 0-Q ms, 0≤T0≤Q ms; assuming the length of the first TDD period and the length of the second TDD period are both q ms, 0≤2q≤Q ms; the first TDD period contains 5 slots (containing 4 downlink (D) slots and one uplink slot (U)), the distribution of the 5 slots in the time domain is: DDDD U, the 5 slots in each first TDD period can be recorded as slot#0-slot#4 (relative time domain location); the second TDD period contains 5 slots (containing 3 downlink (D) slots and 2 uplink slots (U)), the distribution of the 5 slots in the time domain is: DDDUU, the 5 slots in each second TDD period can be recorded as slot#0-slot#4 (relative time domain location); T9=4, T 10 =4, N1=4, N2=2.

[0269] Assuming T0 is equal to 0 ms, k4=k5=0. As shown in FIG. 23, cell#0 can correspond to slot#0-slot#3 in the first TDD period (i.e., the time domain resource of the reference signal of cell#0 is slot#0-slot#1 in the first TDD period), cell#1 can correspond to slot#0 in the second TDD period (relative slot, absolute slot position is slot#5), cell#2 can correspond to slot#1 in the second TDD period (relative slot, absolute slot position is slot#6), and so on. In this way, cell#0, cell#1, cell#2,..., cell#n-1 can all obtain the time domain resource of their respective reference signals.

[0270] In combination with the above description, T can be represented as the offset or deviation value between the time domain resource of the reference signal of the first cell and the reference time domain resource, as follows: offest9 , T offest9 may satisfy the following relationship, i.e., equation (20):

[0271] T The offset or deviation value between the time domain resource of the reference signal of the first cell and the reference time domain resource can be characterized as follows, T offest10 offest10 The following relationship can be satisfied, i.e., formula (21):

[0272] It can be understood that, based on the above formula (18) or formula (19), the first network device can directly obtain the time domain resource of the reference signal of the first cell; and based on the above formula (20) or formula (21), the first network device can only need to calculate T offest9 or T offest10 , without considering the reference time domain resource. Then, the first network device can determine the time domain resource of the reference signal of the first cell according to the T offest9 or T offest10 , and the reference time domain resource.

[0273] It can be understood that the specific implementation of the manner 6 can refer to the related content in the manners 1-2 and 4 described above, and details are not described herein.

[0274] Case 2: The resource of the reference signal of the first cell includes the time domain resource.

[0275] In one possible design, the first network device determines the frequency domain resource of the reference signal of the first cell according to the first cell number and the frequency division multiplexing number of the reference signal.

[0276] ​It can be understood that the reference signal adopts a comb transmission mode. In one frequency domain unit, the network device (in the network device set #1 described above) can transmit the reference signal according to a transmission comb, and the value of the transmission comb can be equal to the frequency division multiplexing number. The frequency division multiplexing number can also be understood as the reciprocal of the frequency domain density (D) of the reference signal (in one frequency domain resource unit). The frequency domain unit can be at least one of the following: a carrier, a subcarrier, a resource element (RE), a resource block (RB), a resource block group (RBG), a resource element group (REG), or a control channel element (CCE), etc. For ease of understanding, the following is described below with the RB as an example of the frequency domain resource unit. For example, the frequency division multiplexing number of the reference signal in one RB can be equal to the reciprocal of the frequency domain density of the reference signal in the RB. The frequency domain density of the reference signal can be denoted as D1 (the value can be 1, 0.5, 0.25, 0.125, etc.), and the frequency division multiplexing number = 1 / D1.

[0277] Based on the above description, the frequency domain resource of the reference signal of the first cell can satisfy the following relationship, i.e., formula (22): R = R0 + X mod Y; (22)

[0278] Wherein, R can be the frequency domain resource of the reference signal of the first cell; R0 can be the reference frequency domain resource, which can be predefined or preconfigured, or indicated by the network, etc., without limitation; X is the cell number, Y is the frequency division multiplexing number, and mod represents the modulus. In this way, the first network device can obtain the frequency domain resource of the reference signal of the first cell according to the above formula (22).

[0279] It can be understood that the above formula (22) is described by taking the first cell as an example, and the resources of the reference signals of other cells in the cell set #1 can also be calculated using similar principles, i.e., replacing X in the above formula (22) with the cell numbers of the other cells in the cell set #1, so that the frequency domain resource positions of the reference signals of each cell in the cell set #1 can be obtained.

[0280] The frequency domain resources of the reference signals of all cells in the cell set #1 can be carried in a common frequency domain unit, such as a common resource block (CRB), which can have a reference point, such as CRB 0 (i.e., point A). Based on the CRB 0, a frequency domain starting position (such as start RB), and a frequency domain multiplexing number, a specific RB set carried by the frequency domain resources of the reference signals of all cells can be obtained. The above R0 can be one RB in the RB set as a reference time domain resource. Each RB can correspond to one cell, that is, each cell in the cell set #1 can use one RB to send the reference signal. It can be understood that the frequency domain starting position can be predefined, preconfigured, or network indicated, and the like, without limitation.

[0281] For example, as shown in FIG. 24, assuming that the time domain density D1 of the reference signal is 1 / 4, Y = 4. Assuming that the frequency domain starting position is CRB 0 and the reference time domain resource (position) is RB#a (a ≥ 0), cell #0 can correspond to RB#a+4 (i.e., the frequency domain resource of the reference signal of cell #0 is RB#a+4), cell #1 can correspond to RB#a+5, cell #2 can correspond to RB#a+6, cell #3 can correspond to RB#a+7, and so on, without being limited.

[0282] Case 3: The resource of the reference signal of the first cell includes a code domain resource.

[0283] In one possible design, the first network device determines the code domain resource of the reference signal of the first cell according to the first cell number.

[0284] For example, the set to which the reference signal belongs can be composed of a plurality of, such as 30 groups of basic ZC (Zadoff-Chu) sequences, that is, there are 30 groups of different sequence combinations, which can accommodate (correspond to) 30 interfering cells. The first network device can determine the code domain resource of the reference signal of the first cell according to X mod 30. It can be understood that based on the fact that each of the plurality of cells corresponds to a unique cell number, the code domain resource of each cell can be obtained according to the cell number mod 30 of the respective cell, so that the code domain resource of the reference signal corresponding to each of the plurality of cells is different, that is, the code domain resource is randomized or orthogonalized, thereby reducing interference.

[0285] It can be understood that, based on the above case 1, time domain resource randomization or orthogonalization of reference signals of multiple cells can be implemented; based on the above case 2, frequency domain resource randomization or orthogonalization of reference signals of multiple cells can be implemented; based on the above case 3, code domain resource randomization or orthogonalization of reference signals of multiple cells can be implemented. The above cases 1-3 can also be coupled or combined, that is, time-frequency-code resource randomization or orthogonalization of reference signals of multiple cells is implemented, and the embodiments of the present application do not limit this.

[0286] For example, the following is taken as an example of the combination of case 1 and case 2, and the specific implementation of time-frequency resource randomization or orthogonalization of reference signals of multiple cells is introduced as follows.

[0287] Implementation 7: frequency domain orthogonalization first, and then time domain orthogonalization.

[0288] For example, the time domain resource of the reference signal of the first cell can satisfy the following relationship, that is, formula (23):

[0289] The frequency domain resource of the reference signal of the first cell can satisfy the following relationship, that is, formula (24):

[0290] It can be understood that the above formula (21) and formula (24) are introduced taking the first cell as an example, and the time domain resource and frequency domain resource of the reference signal of other cells in the cell set #1 can also be calculated using similar principles, that is, X in the above formula (23) and formula (24) is replaced by the cell number of each cell in the cell set #1. In this way, the time domain resource position and frequency domain resource position of the reference signal of each cell in the cell set #1 can be obtained.

[0291] The implementation 7 can be a combination of the above implementation 1 and case 2. In combination with the introduction of the related content in the above implementation 1 and case 2, for example, as shown in FIG. 25, in the frequency domain, cell #0 and cell #4 can correspond to RB#a+4, cell #1 and cell #5 can correspond to RB#a+5, cell #2 and cell #6 can correspond to RB#a+6, cell #3 and cell #7 can correspond to RB#a+7, and so on. In the time domain, cell #0-cell #3 can correspond to slot #0, cell #4-cell #7 can correspond to slot #1, and so on. Details are not described herein.

[0292] Implementation 8: time domain orthogonalization first, and then frequency domain orthogonalization.

[0293] For example, the time domain resource of the reference signal of the first cell can satisfy the following relationship, that is, formula (25): T=T0+X mod T1; (25)

[0294] The frequency domain resource of the reference signal of the first cell can satisfy the following relationship, i.e., formula (26):

[0295] It can be understood that the above formula (25) and formula (26) are introduced by taking the first cell as an example. The time domain resource and the frequency domain resource of the reference signal of other cells in the cell set #1 can also be calculated using similar principles, i.e., replacing X in the above formula (25) and formula (26) with the cell number of each of the other cells in the cell set #1. In this way, the time domain resource position and the frequency domain resource position of the reference signal of each of the cells in the cell set #1 can be obtained.

[0296] The implementation 7 can be a combination of the above implementation 1 and case 2. In combination with the introduction of the related content in the above implementation 1 and case 2, for example, as shown in FIG. 26, in the time domain, cell #0, cell #T1,..., cell #3T1 can correspond to slot #0; cell #1, cell #T1+1,..., cell #3T1+1 can correspond to slot #1;...; cell #T1-1, cell #2T1-1,..., cell #4T1-1 can correspond to slot #B-1 (T1 is equal to B). In the frequency domain, cell #0-cell #T1-1 can correspond to RB#a+4, cell #T1-cell #2T1-1 can correspond to RB#a+5, cell #2T1-cell #3T1-1 can correspond to RB#a+6, and cell #3T1-cell #4T1-1 can correspond to RB#a+7.

[0297] It can be understood that the above introduction is only an example. The first network device can also determine the resource of the reference signal of the first cell through other possible implementation manners, and the embodiments of the present application do not limit this. Similarly, other network devices in the network device set can also determine the resource of the reference signal of the respective serving cells through other possible implementation manners, and the embodiments of the present application do not limit this.

[0298] For the above step S1302:

[0299] In combination with the above step S1301, the first network device can send the reference signal to the terminal device in the first cell according to the resource of the reference signal of the first cell determined in the above step S1301. That is, the first network device can send the reference signal to the terminal device in the first cell on the resource of the reference signal of the first cell. The reference signal can be used for channel measurement between the first network device and the terminal device, and / or the reference signal can be used for channel measurement and / or interference measurement between the first network device and the second network device.

[0300] It can be understood that the terminal device in the first cell can be one or more, and after the network device obtains the resource of the reference signal of the first cell, the user can be scheduled and the resource can be allocated, so that the resource of the reference signal of one or more terminal devices in the first cell is orthogonal, and the resource conflict situation is avoided. The first network device can send a reference signal to each terminal device in the first cell, and the channel measurement between the first network device and each terminal device in the first cell can include: the channel measurement between the first network device and each terminal device in the first cell. Each terminal device in the first cell can perform channel measurement according to the received reference signal, and each terminal device in the first cell can also send the obtained channel measurement result to the first network device for the first network device to perform subsequent operations according to the channel measurement result reported by each terminal device in the first cell, without limitation.

[0301] The following examples are used to specifically introduce the reference signal for channel measurement and / or interference measurement between the first network device and the second network device.

[0302] Example 1: the first network device is the same as the second device.

[0303] In example 1, the channel measurement between the first network device and the second network device can be the channel measurement and / or interference measurement between the first cell of the first network device and other cells of the first network device. For example, assuming that the first network device has three cells, which are cell#a (corresponding to the first cell), cell#b and cell#c. When the first network device sends a reference signal to the terminal device in cell#a, cell#b and cell#c can also receive the reference signal (cell#b and cell#c can know that the received reference signal is the reference signal of cell#a), cell#b can measure the channel (such as channel state) between cell#a and cell#b based on the received reference signal, and / or measure the interference (such as the strength of the interference signal carried by the channel between cell#a and cell#b) between cell#a and cell#b, and cell#b can also send the obtained measurement result (channel measurement result and / or interference measurement result) to the first network device; cell#c can measure the channel (such as channel state) between cell#a and cell#c based on the received reference signal, and / or measure the interference (such as the strength of the interference signal carried by the channel between cell#a and cell#c) between cell#a and cell#c, and cell#c can also send the obtained measurement result (channel measurement result and / or interference measurement result) to the first network device, so that the first network device can perform subsequent operations according to the measurement result reported by cell#b and cell#c, without limitation.

[0304] Example 2: the first network device is different from the second device.

[0305] In Example 2, the channel measurement and / or interference measurement between the first network device and the second network device, i.e., the channel measurement and / or interference measurement between two different network devices, can be performed by the second network device, which can be any one of the network device set #1.

[0306] For example, when the first network device transmits a reference signal to a terminal device in the first cell on the resource of the reference signal of the first cell, the second network device can also receive the reference signal (the second network device can know that the received reference signal is the reference signal from the first network device), and the second network device can measure the channel (e.g., the channel state) between the first network device and the second network device and / or the interference (e.g., the strength of the interference signal carried by the channel between the first network device and the second network device) based on the received reference signal. The second network device can distribute the user and allocate the resource based on the obtained measurement result (the channel measurement result and / or the interference measurement result). The second network device can also send the obtained measurement result to the first network device, so that the first network device can perform subsequent operations according to the measurement result, without limitation.

[0307] It can be understood that the above is an example of the second network device receiving the reference signal from the first network device, and other network devices, such as the third network device in the network device set #1, can also measure the channel or interference between the first network device and the third network device based on the received reference signal from the first network device, and the implementation principle is similar, which can be understood by reference, and will not be described in detail. It should be understood that if the above channel measurement refers to the measurement of the channel state, channel elements, etc., the reference signal can be CSI-RS, or DMRS, etc.; if the above channel measurement refers to the measurement of the quality of the channel, the reference signal can be CSI-RS, DMRS, CRS, SSB, PSS, SSS, or PT-RS, etc., without limitation.

[0308] Based on the above introduction, the embodiments of the present application are based on the measurement between network devices, and perform user scheduling and resource allocation in one scheduling resource, wherein the user scheduling and resource allocation take into account the beam interference relationship between different network devices and the interference relationship between different terminal devices, thereby avoiding or reducing the CLI interference between cells.

[0309] In conclusion, the first network device can determine the resource of the reference signal of the first cell according to the first cell number uniquely identifying the first cell of the first network device, and transmit the reference signal to the terminal device in the first cell according to the resource of the reference signal of the first cell. The first cell belongs to one of the plurality of cells, and the resource of the reference signal of each cell in the plurality of cells can be determined according to the respective cell number of each cell. Based on the respective cell number of each cell in the plurality of cells being unique, the resource of the reference signal of each cell in the plurality of cells can be different, that is, the resource is randomized, so as to reduce or lower, or even avoid the conflict of the reference signal measurement resource of different network devices (which can serve the plurality of cells, and the different network devices can include the first network device) or different cells of the same network device, so as to improve the accuracy and communication efficiency of the measurement result of the received reference signal of different network devices and different cells of the same network device.

[0310] The communication method provided by the embodiments of the present application is described in detail above in combination with FIG. 13-FIG. 26. The communication apparatus for executing the communication method provided by the embodiments of the present application is described in detail below in combination with FIG. 27-FIG. 28.

[0311] FIG. 27 is a structural schematic diagram of a communication apparatus according to an embodiment of the present application. As shown in FIG. 27, the communication apparatus 2700 includes a transceiver module 2701 and a processing module 2702. For the convenience of description, FIG. 27 only shows the main components of the communication apparatus 2700.

[0312] The transceiver module 2701 is configured to perform the transceiving functions of the method shown in FIG. 13, and the processing module 2702 is configured to perform the functions of the method shown in FIG. 8 and FIG. 13 other than the transceiving functions.

[0313] Optionally, the transceiver module 2701 can include a sending module (not shown in FIG. 27) and a receiving module (not shown in FIG. 27). The sending module is configured to implement the sending function of the communication apparatus 2700, and the receiving module is configured to implement the receiving function of the communication apparatus 2700.

[0314] Optionally, the communication apparatus 2700 can further include a storage module (not shown in FIG. 27), which stores a program or instructions. When the processing module 2702 executes the program or instructions, the communication apparatus 2700 can perform the functions of the first network device in the method shown in FIG. 13 in the above method.

[0315] It can be understood that the communication apparatus 2700 can be a network device, a chip (system) or other components or assemblies that can be arranged in the network device, or an apparatus including the network device, and the embodiments of the present application do not limit this.

[0316] In addition, the technical effects of the communication apparatus 2700 can refer to the technical effects of the communication method shown in FIG. 13, which will not be repeated here.

[0317] Exemplarily, FIG. 28 is a structural schematic diagram of a communication apparatus provided by an embodiment of the present application. The communication apparatus can be a terminal device or a network device, and can also be a chip (system) or other components or assemblies of the terminal device or the network device. As shown in FIG. 28, the communication apparatus 2800 can include a processor 2801. Optionally, the communication apparatus 2800 can also include a memory 2802 and / or a transceiver 2803. The processor 2801 is coupled with the memory 2802 and the transceiver 2803, for example, through a communication bus.

[0318] The various constituent components of the communication apparatus 2800 will be specifically introduced below in combination with FIG. 28:

[0319] The processor 2801 is the control center of the communication apparatus 2800, and can be one processor or a collective term of multiple processing elements. For example, the processor 2801 is one or more CPUs, can also be an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application, for example: one or more DSPs, or one or more FPGAs.

[0320] Optionally, the processor 2801 can execute various functions of the communication apparatus 2800 by running or executing software programs stored in the memory 2802, and calling data stored in the memory 2802, for example, executing the communication method shown in FIG. 13.

[0321] In a specific implementation, as an embodiment, the processor 2801 can include one or more CPUs, for example, CPU0 and CPU1 shown in FIG. 28.

[0322] In a specific implementation, as an embodiment, the communication apparatus 2800 can also include multiple processors, for example, the processor 2801 and the processor 2804 shown in FIG. 28. Each of the processors can be a single-CPU or a multi-CPU. The processor herein can refer to one or more devices, circuits, and / or processing cores for processing data (for example, computer program instructions).

[0323] The memory 2802 is configured to store a software program for implementing the solutions of the present application, and the processor 2801 is configured to control the execution of the software program. For details, refer to the foregoing method embodiments, which will not be repeated here.

[0324] Optionally, the memory 2802 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, and can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, an optical disc storage (including a compact disc, a laser disc, an optical disc, a digital versatile disc, a Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and can be accessed by a computer, but is not limited to this. The memory 2802 can be integrated with the processor 2801 or exist independently and be coupled to the processor 2801 through an interface circuit (not shown in FIG. 28) of the communication device 2800, and the embodiments of the present application are not limited in this regard.

[0325] The transceiver 2803 is configured to communicate with other communication devices. For example, the communication device 2800 is a network device, and the transceiver 2803 can be configured to communicate with a terminal device or another network device.

[0326] Optionally, the transceiver 2803 can include a receiver and a transmitter (not shown separately in FIG. 28). The receiver is configured to implement the receiving function, and the transmitter is configured to implement the transmitting function.

[0327] Optionally, the transceiver 2803 can be integrated with the processor 2801 or exist independently and be coupled to the processor 2801 through an interface circuit (not shown in FIG. 28) of the communication device 2800, and the embodiments of the present application are not limited in this regard.

[0328] It should be noted that the structure of the communication device 2800 shown in FIG. 28 does not constitute a limitation on the communication device, and the actual communication device can include more or fewer components than those shown, or combine certain components, or different component arrangements.

[0329] In addition, the technical effects of the communication apparatus 2800 can refer to the technical effects of the communication method described in the method embodiments, which are not described herein again.

[0330] The embodiments of the present application provide a communication system. The communication system can include the first network device in the method embodiments and a terminal device.

[0331] It should be understood that the processor in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0332] It should also be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. The non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM) and direct rambus RAM (DR RAM).

[0333] The above-described embodiments can be implemented in part or in whole through software, hardware (e.g., circuitry), firmware, or any combination thereof. When implemented in software, the above-described embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When loaded and executed by a computer, the computer instructions or computer programs cause the computer to perform the processes or functions described in the embodiments of the present application. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable apparatus. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, such as from a website, a computer, a server, or a data center to another website, computer, server, or data center through a wired (e.g., infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. that includes one or more collections of available media. The available media can be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0334] It should be understood that the term "and / or" used herein is merely an association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it, but it can also represent an "and / or" relationship, which can be understood in the context before and after it.

[0335] In this application, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or similar expressions means any combination of the items, including any combination of single or multiple items. For example, at least one of a, b, or c can mean a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.

[0336] It should be understood that in various embodiments of the present application, the size of the sequence number of the above-described processes does not mean the order of execution, and the execution order of the processes should be determined by their functions and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0337] Those skilled in the art can clearly understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0338] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0339] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0340] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0341] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically independently, or two or more units can be integrated into one unit.

[0342] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the parts that contribute to the prior art or parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0343] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method is applied to a first network device, and the method comprises: determining, according to a first cell number, a resource of a reference signal of a first cell; wherein the first cell number is used for uniquely identifying the first cell of the first network device, the first cell belongs to one of a plurality of cells, and the resources of the reference signals of any two cells in the plurality of cells are different; sending, according to the resource of the reference signal of the first cell, the reference signal to a terminal device within the first cell; wherein the reference signal is used for channel measurement between the first network device and the terminal device, and / or the reference signal is used for channel measurement and / or interference measurement between the first network device and a second network device.

2. The method of claim 1, wherein, The first cell numbers are different, and the resources of the reference signals of the first cells are different; the resource of the reference signal of the first cell comprises at least one of a time domain resource, a frequency domain resource, or a code domain resource.

3. The method according to claim 1 or 2, characterized in that, The resource of the reference signal of the first cell comprises a time domain resource; the determining, according to the first cell number, of the resource of the reference signal of the first cell comprises: determining, according to the first cell number and a measurement period of the reference signal, a time domain resource of the reference signal of the first cell.

4. The method according to any one of claims 1-3, characterized in that, The time domain resource of the reference signal of the first cell satisfies the following relationship: T = T0 + X mod T1; wherein T is the time domain resource of the reference signal of the first cell, T0 is a reference time domain resource, X is the first cell number, T1 is a number of time units contained in the measurement period, mod represents modulo, and T is granular in terms of the time units.

5. The method of claim 4, wherein, The time units contained in the measurement period satisfy any one of the following: The time units are uplink time units or downlink time units; or the time units are the downlink time units.

6. The method according to any one of claims 1-3, characterized in that, The time domain resource of the reference signal of the first cell satisfies the following relationship: T = T0 + (X mod T2) × K + k1; wherein T is the time domain resource of the reference signal of the first cell, T0 is a reference time domain resource, X is the first cell number, T2 is a number of time units contained in the measurement period, the time units contained in the measurement period contain K sub-time units, 0 ≤ k1 ≤ K-1 and k1 is an integer, mod represents modulo, and T is granular in terms of the sub-time units.

7. The method of claim 6, wherein, The K sub-time units satisfy any one of the following: The sub-time units are uplink sub-time units or downlink sub-time units; or The sub-time units are the downlink sub-time units; or the sub-time units are the downlink time units, and the K sub-time units are continuous in time domain position.

8. The method according to any one of claims 4-7, characterized in that, The time units comprise at least one of the following: a frame, a subframe, a slot, or a symbol.

9. The method of claim 3, wherein, The measurement period is a time division multiplexing (TDD) single period; and the time domain resource of the reference signal of the first cell satisfies the following relationship: T = T0 + X mod (T3 / T4) + k2; T = T0+ X mod T3+ k2T4, 0≤k1≤T3-1, 0≤k2≤T4-1, k1 and k2 are integers, and mod represents modulo operation.

10. The method of any one of claims 1-3, wherein, The measurement period is a time division duplex (TDD) double period; and time domain resources of the reference signal of the first cell satisfy the following relationship: When PCI mod 2 = 0, the reference signal of the first cell corresponds to the first TDD period, 0≤k3≤T (TDD，1) -1 and k3 is an integer; When PCI mod 2≠0, the reference signal of the first cell corresponds to the second TDD period, 0≤k3≤T (TDD，2) -1 and k3 is an integer; wherein T is a time domain resource of a reference signal of the first cell, T0 is a reference time domain resource, X is the cell number, T5 is a length of the measurement period, T (TDD，1) is a length of the first TDD period, T (TDD，2) is a length of the second TDD period, and mod denotes a modulo operation.

11. The method according to any one of claims 3-10, characterized in that, The method further includes: obtaining a starting time domain position of the measurement period; determining a time domain resource position of the measurement period according to the starting time domain position and the length of the measurement period.

12. The method according to any one of claims 1-11, characterized in that, The resource of the reference signal of the first cell includes a frequency domain resource; and the determining the resource of the reference signal of the first cell according to the cell number of the first cell includes: determining the frequency domain resource of the reference signal of the first cell according to the cell number of the first cell and a frequency division multiplexing number of the reference signal.

13. The method of claim 12, wherein, The frequency domain resource of the reference signal of the first cell satisfies the following relationship: R = R0+ X mod Y; wherein R is the frequency domain resource of the reference signal of the first cell, R0is a reference frequency domain resource, X is the cell number, Y is the frequency division multiplexing number, and mod represents modulo operation.

14. The method of any one of claims 1-13, wherein, The resource of the reference signal of the first cell includes a code domain resource; and the determining the resource of the reference signal of the first cell according to the cell number of the first cell includes: determining the code domain resource of the reference signal of the first cell according to the cell number of the first cell.

15. The method of any one of claims 1-14, wherein, Any two cells of the plurality of cells have cross-link interference.

16. A communications device, characterized by The chip includes a module for executing the method according to any one of claims 1-15.

17. A communications device, characterized by The chip includes: a processor; the processor is configured to run a computer program or instructions to enable the method according to any one of claims 1-15 to be implemented.

18. A communication chip, comprising: The chip has instructions stored therein, which, when the chip is run on a communication device, enable the method according to any one of claims 1-15 to be implemented.

19. A computer-readable storage medium, characterized in that, The computer readable storage medium includes a computer program or instructions, which, when run on a computer, enable the computer to perform the communication method according to any one of claims 1-15.

20. A computer program product, characterised in that, The computer program product includes a computer program or instructions, which, when run on a computer, enable the computer to perform the communication method according to any one of claims 1-15.

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