CN117793903A

CN117793903A - Interference control method and device

Info

Publication number: CN117793903A
Application number: CN202211181103.3A
Authority: CN
Inventors: 简雄军; 刘振南; 胡文立
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2024-03-29
Also published as: WO2024067003A1

Abstract

The interference control method and device can realize frequency domain initial position configuration of beam level, so that fine frequency domain initial position staggering is realized, interference control efficiency is improved, interference is reduced, and user experience is improved. The method comprises the following steps: the network device determines the frequency domain resource starting positions corresponding to a plurality of SSB beams of the first cell, wherein the frequency domain resource starting positions corresponding to at least two SSB beams in the plurality of SSB beams are different. The network device determines that a service beam corresponding to the first terminal device is associated with a first SSB beam in the plurality of SSB beams, and provides service for the first terminal device on a first frequency domain resource through the service beam corresponding to the first terminal device. The starting position of the first frequency domain resource is the starting position of the frequency domain resource corresponding to the first SSB wave beam.

Description

Interference control method and device

Technical Field

The embodiment of the application relates to the field of communication, in particular to an interference control method and device.

Background

The fifth generation (5th generation,5G) mobile communication technology (mobile communication technology) is a new generation broadband mobile communication technology with the characteristics of high speed, low time delay, large connection and the like, and is a network infrastructure for realizing man-machine object interconnection. As the permeability of 5G users increases and the traffic increases, the interference in the 5G network increases, resulting in a reduced user experience. To guarantee the user experience, interference control is a necessary choice.

Currently, one commonly used interference control scheme is a frequency domain interference randomization scheme based on physical cell identity (physical cell identifier, PCI) modulo 3. The basic principle is as follows: different values of the PCI of the cell after the module of 3 are taken correspond to different frequency domain resource starting positions. That is, when the values obtained by modulo 3 PCI of different cells are different, the starting positions of the frequency domain resources to be scheduled of the cells are different.

However, from the statistical data of the existing network, in the interference randomization scheme based on the PCI mode 3, the interference avoiding effect is poor.

Disclosure of Invention

The application provides an interference control method and device, which can improve the interference control efficiency, further reduce interference and improve user experience.

In a first aspect, an interference control method is provided, where the method may be performed by a network device, or may be performed by a component of the network device, for example, a processor, a chip, or a system-on-chip of the network device, or may be implemented by a logic module or software that can implement all or part of the functions of the network device. The method comprises the following steps: acquiring frequency domain resource starting positions corresponding to a plurality of SSB beams of a synchronous signal block of a first cell, wherein the frequency domain resource starting positions corresponding to at least two SSB beams are different; and determining a service beam corresponding to the first terminal equipment, wherein the service beam is associated with a first SSB beam in the plurality of SSB beams. And providing service for the first terminal equipment on the first frequency domain resource through the service beam, wherein the starting position of the first frequency domain resource is the starting position of the frequency domain resource corresponding to the first SSB beam.

Based on the scheme, the network device can determine the frequency domain resource starting position of the SSB beam level, take the frequency domain resource starting position corresponding to the SSB beam as the frequency domain resource starting position of the corresponding service beam, and provide service for the terminal device at the frequency domain resource starting position through the service beam. That is, the network device may guide the configuration of the frequency domain resource starting position of the service beam through the frequency domain resource starting position corresponding to the SSB beam, so as to implement the configuration of the beam level frequency domain resource starting position of the service beam, thereby implementing the fine frequency domain starting position staggering, improving the interference control efficiency, further reducing the interference, and improving the user experience.

In one possible design, determining a frequency domain resource starting position corresponding to a plurality of SSB beams of a first cell includes: determining at least one SSB beam pair, one of the SSB beam pairs being an SSB beam of the first cell and the other SSB beam being an interference beam; determining a frequency domain starting position corresponding to each SSB wave beam in at least one SSB wave beam pair according to the interference amount, the isolation degree and the total number of the frequency domain starting positions of the at least one SSB wave beam pair; the amount of interference of the SSB beam pair indicates interference of the interfering beam of the SSB beam pair to another SSB beam; the isolation indicates the separation between the frequency domain starting positions of the two SSB beams.

Based on the possible design, the method and the device determine the frequency domain resource starting position corresponding to the beam based on the interference amount of the SSB beam pair, and configure the frequency domain resource starting position by taking the beam as granularity, so that the same frequency domain starting position can be configured for different beams with weak interference, resource waste is reduced, enough different frequency domain starting positions can be reserved for the beams with strong interference, and interference control efficiency is improved.

In one possible design, determining the frequency domain starting position corresponding to each SSB beam in the at least one SSB beam pair based on the amount of interference, the isolation, and the total number of frequency domain starting positions for the at least one SSB beam pair includes: solving an optimization problem to obtain a frequency domain starting position corresponding to each SSB beam in at least one SSB beam pair, wherein the optimization problem is obtained based on constraint conditions and a minimized objective function, and the objective function is determined by the interference quantity of the at least one SSB beam pair, the total number of the frequency domain starting positions and a variable; isolation is the solution of the variable in the optimization problem.

In one possible design, determining at least one SSB beam pair includes: determining an interference matrix of at least one cell, wherein the at least one cell comprises a first cell, and the interference matrix of the first cell comprises interference amounts of SSB beam pairs formed by a plurality of SSB beams of the first cell and respective SSB beams of a second cell; at least one SSB beam pair is determined from the interference matrix of at least one cell.

In one possible design, the at least one SSB beam pair includes SSB beam pairs corresponding to first M interference amounts with the largest value in an interference matrix of the at least one cell, where M is a positive integer; alternatively, the at least one SSB beam pair includes SSB beam pairs corresponding to the total amount of interference in the interference matrix of the at least one cell.

Based on the possible design, the at least one SSB beam pair comprises SSB beam pairs corresponding to the first M interference quantities with the maximum value in the interference matrix of at least one cell, so that the SSB beam pairs participating in calculation are fewer, the requirement on the calculation capability of the network equipment can be reduced, and the implementation complexity of the network equipment is reduced. The at least one SSB beam pair comprises SSB beam pairs corresponding to all interference amounts in an interference matrix of at least one cell, the SSB beam pairs participating in calculation are comprehensive, and the accuracy of the starting position of the frequency domain resource corresponding to the SSB beam can be improved.

In one possible design, the amount of interference of the SSB beam pair is determined by the signal quality of the SSB beam of the first cell, the signal quality of the interfering beam, the traffic of the first cell, and the traffic of the second cell, the interfering beam being the beam of the second cell.

In one possible design, the amount of interference of SSB beam pairs satisfies: the amount of interference of SSB beam pairs= (signal quality of SSB beam of first cell-signal quality of interference beam) = (traffic of first cell + traffic of second cell).

In one possible design, the method further comprises: a measurement report MR is received from a first terminal device. The MR of the first terminal device indicates at least one of: the signal quality of the SSB beam of the first cell, the signal quality of the interfering beam, or the traffic of the first cell.

In one possible design, the method further comprises: receiving MR from a second terminal device, wherein a service cell of the second terminal device is a second cell; the MR of the second terminal device indicates the traffic volume of the second cell.

Based on the possible design, the method and the device quantify interference among SSB beams through the signal quality of the SSB beams and the traffic of cells, and the traffic distribution is included in analysis to identify SSB beam pairs with stronger interference. And constructing an objective function based on the interference quantity, converting the configuration of the beam-level frequency domain resource starting position into an optimization problem, and obtaining the frequency domain resource starting position corresponding to the SSB beam by solving the optimization problem. The network equipment can take the frequency domain resource starting position corresponding to the SSB wave beam as the frequency domain resource starting position of the corresponding service wave beam, so that the configuration of the frequency domain resource starting position of the service wave beam level is realized, the degree of freedom of the configuration of the frequency domain resource starting position is improved, the fine frequency domain starting position staggering is realized, and the interference control efficiency is improved.

In one possible design, the optimization problem is:

min∑ _mn (Interference _mn *(N-Isolation _mn ))subject to Isolation _mn ∈[0,N-1]

alternatively, the optimization problem is:

min∑ _mn (Interference _mn *(N-Isolation _mn )*SameSiteFlag _mn )subject to Isolation _mn ∈[0,N-1]

wherein, interface _mn The amount of interference of the SSB beam pair consisting of SSB beam m and SSB beam n; n is the total number of the initial positions of the frequency domain; isolation of _mn Isolation to Isolation _mn ＝|Pos _m -Pos _n |；Pos _m Index of frequency domain starting position corresponding to SSB wave beam m, pos _n Index of the frequency domain starting position corresponding to SSB wave beam n; isolation of _mn ∈[0,N-1]Is a constraint.

SameSiteFlag _mn For indicating whether SSB beam m and SSB beam n belong to the same cell, if SSB beam m and SSB beam n belong to the same cell, sameSiteFlag _mn =0, if SSB beam m and SSB beam n do not belong to the same cell, sameSiteFlag _mn ＝1。

Based on the fact that this possible design is,the smaller the Isolation, the closer the corresponding frequency domain start positions of the two SSB beams are, (N-Isolation) _mn ) The larger the value of (2), the greater its effect on the amount of interference; the greater the Isolation, the further the corresponding frequency domain start positions of the two SSB beams, (N-Isolation) _mn ) The smaller the value of (c), the better the interference control effect. In addition, the optimization problem can search a better solution after summing up the products of the interference amounts of all SSB beam pairs and the influence factors thereof, namely, comprehensively considering the interference among a plurality of SSB beams of a plurality of cells in the network, and performing interference control from the whole network angle, thereby reducing the interference level of the whole network.

In one possible design, each SSB beam of the plurality of SSB beams of the first cell is associated with at least one traffic beam; determining a service beam corresponding to the first terminal device, including: measuring signal quality of a sounding reference signal, SRS, from a first terminal device on a plurality of service beams associated with a plurality of SSB beams of a first cell; and determining the service beam with the strongest signal quality of the SRS from the plurality of service beams as the service beam corresponding to the first terminal equipment.

In one possible design, the service is provided for the first terminal device on the first frequency domain resource through the service beam corresponding to the first terminal device, including: and transmitting a downlink signal to the first terminal equipment or receiving an uplink signal from the first terminal equipment on the first frequency domain resource through a service beam corresponding to the first terminal equipment.

In one possible design, the horizontal direction of the second SSB beam is the same as the horizontal direction of the traffic beam with which the second SSB beam is associated; alternatively, the difference between the horizontal direction of the second SSB beam and the horizontal direction of the traffic beam associated with the second SSB beam is less than a threshold. Wherein the second SSB beam is any SSB beam of the plurality of SSB beams of the first cell.

In one possible design, obtaining the frequency domain resource starting positions corresponding to the SSB beams of the first cell includes: and receiving the frequency domain resource starting positions corresponding to the SSB beams of the first cell from the electronic equipment.

In a second aspect, a resource determining method is provided, where the method may be performed by an electronic device, or by a component of the electronic device, such as a processor, a chip, or a system-on-chip of the electronic device, or by a logic module or software that can implement all or part of the functionality of the electronic device. The method comprises the following steps: determining at least one SSB beam pair, one of the SSB beam pairs being an SSB beam of the first cell and the other SSB beam being an interference beam; determining a frequency domain starting position corresponding to each SSB wave beam in at least one SSB wave beam pair according to the interference amount, the isolation degree and the total number of the frequency domain starting positions of the at least one SSB wave beam pair; the amount of interference of the SSB beam pair indicates interference of the interfering beam of the SSB beam pair to another SSB beam; the isolation indicates the separation between the frequency domain starting positions of the two SSB beams.

Based on the scheme, the frequency domain resource starting position corresponding to the beam is determined based on the interference amount of the SSB beam pair, and the configuration of the frequency domain resource starting position by taking the beam as granularity is realized, so that the fine frequency domain starting position staggering is realized, the interference control efficiency is improved, the interference is further reduced, and the user experience is improved. In addition, the same frequency domain starting positions can be configured for different beams with weaker interference, resource waste is reduced, enough different frequency domain starting positions can be reserved for beams with stronger interference, and interference control efficiency is improved.

In one possible design, the optimization problem is:

alternatively, the optimization problem is:

SameSiteFlag _mn For indicating whether or not SSB beams m and n belong to the same cell, if SSB beams m and n belong toIn the same cell, sameSiteFlag _mn =0, if SSB beam m and SSB beam n do not belong to the same cell, sameSiteFlag _mn ＝1。

In one possible design, the method further comprises: and transmitting the frequency domain starting position corresponding to each SSB beam in the at least one SSB beam pair to the network equipment.

The technical effects of any possible design of the second aspect may refer to the technical effects of the corresponding design of the first aspect, which are not described herein.

In a third aspect, a communications apparatus is provided for implementing various methods. The communication means may be the network device of the first aspect or a device comprised in the network device, such as a chip or a system-on-chip. The communication device comprises a module, a unit or means (means) for implementing the method, and the module, the unit or the means can be implemented by hardware, software or implemented by hardware for executing corresponding software. The hardware or software includes one or more modules or units corresponding to the functions.

In some possible designs, the communication device may include a processing module and a transceiver module. The processing module may be configured to implement the processing functions of any of the aspects described above and any possible implementation thereof. The transceiver module may comprise a receiving module and a transmitting module for implementing the receiving function and the transmitting function, respectively, in any of the above aspects and any possible implementation thereof.

In some possible designs, the transceiver module may be formed by a transceiver circuit, transceiver, or communication interface.

In some possible designs, the processing module is configured to obtain frequency domain resource starting positions corresponding to SSB beams of a plurality of synchronization signal blocks of the first cell, where the frequency domain resource starting positions corresponding to at least two SSB beams are different. And the processing module is also used for determining a service beam corresponding to the first terminal equipment, and the service beam is associated with a first SSB beam in the plurality of SSB beams. And the receiving and transmitting module is used for providing service for the first terminal equipment on the first frequency domain resource through the service beam, and the starting position of the first frequency domain resource is the starting position of the frequency domain resource corresponding to the first SSB beam.

In some possible designs, the processing module, configured to determine frequency domain resource starting positions corresponding to the SSB beams of the first cell, includes: and the processing module is used for determining at least one SSB beam pair, wherein one beam in the SSB beam pair is an SSB beam of the first cell, and the other SSB beam is an interference beam. The processing module is further used for determining a frequency domain starting position corresponding to each SSB wave beam in the at least one SSB wave beam pair according to the interference amount, the isolation degree and the total number of the frequency domain starting positions of the at least one SSB wave beam pair; the amount of interference of the SSB beam pair indicates interference of the interfering beam of the SSB beam pair to another SSB beam; the isolation indicates the separation between the frequency domain starting positions of the two SSB beams.

In some possible designs, the processing module is further configured to determine a frequency domain starting position corresponding to each SSB beam in the at least one SSB beam pair according to the interference amount, the isolation, and the total number of frequency domain starting positions of the at least one SSB beam pair, including: the processing module is further used for solving an optimization problem to obtain a frequency domain starting position corresponding to each SSB beam in at least one SSB beam pair, wherein the optimization problem is obtained based on constraint conditions and a minimized objective function, and the objective function is determined by the interference quantity, the total number of the frequency domain starting positions and the variable of the at least one SSB beam pair; isolation is the solution of the variable in the optimization problem.

In some possible designs, the processing module for determining at least one SSB beam pair includes: and the processing module is used for determining an interference matrix of at least one cell, wherein the at least one cell comprises a first cell, and the interference matrix of the first cell comprises interference amounts of SSB beam pairs formed by a plurality of SSB beams of the first cell and respective SSB beams of a second cell. The processing module is further configured to determine at least one SSB beam pair according to an interference matrix of the at least one cell.

In some possible designs, the at least one SSB beam pair includes SSB beam pairs corresponding to first M interference amounts with the largest value in an interference matrix of the at least one cell, where M is a positive integer; alternatively, the at least one SSB beam pair includes SSB beam pairs corresponding to the total amount of interference in the interference matrix of the at least one cell.

In some possible designs, the amount of interference of the SSB beam pair is determined by the signal quality of the SSB beam of the first cell, the signal quality of the interfering beam, the traffic of the first cell, and the traffic of the second cell, the interfering beam being the beam of the second cell.

In some possible designs, the amount of interference of SSB beam pairs satisfies: the amount of interference of SSB beam pairs= (signal quality of SSB beam of first cell-signal quality of interference beam) = (traffic of first cell + traffic of second cell).

In some possible designs, the transceiver module is further configured to receive a measurement report MR from the first terminal device. The MR of the first terminal device indicates at least one of: the signal quality of the SSB beam of the first cell, the signal quality of the interfering beam, or the traffic of the first cell.

In some possible designs, the transceiver module is further configured to receive MR from a second terminal device, where a serving cell of the second terminal device is a second cell; the MR of the second terminal device indicates the traffic volume of the second cell.

In some possible designs, the optimization problem is:

alternatively, the optimization problem is:

wherein, interface _mn The amount of interference of the SSB beam pair consisting of SSB beam m and SSB beam n; n is the total number of the initial positions of the frequency domain; isolation of _mn Isolation to Isolation _mn ＝|Pos _m -Pos _n |；Pos _m Index of frequency domain starting position corresponding to SSB wave beam m, pos _n Index of the frequency domain starting position corresponding to SSB wave beam n; isolation of _mn ∈[0,N-1]Is aboutBeam conditions.

In some possible designs, each SSB beam of the plurality of SSB beams of the first cell is associated with at least one traffic beam; the processing module is configured to determine a service beam corresponding to the first terminal device, and includes: a processing module for measuring signal quality of a sounding reference signal, SRS, from a first terminal device on a plurality of service beams associated with a plurality of SSB beams of a first cell. And the processing module is used for determining the service beam with the strongest signal quality of the SRS from the plurality of service beams as the service beam corresponding to the first terminal equipment.

In some possible designs, the transceiver module is configured to provide services for the first terminal device on the first frequency domain resource through a service beam corresponding to the first terminal device, and includes: and the receiving and transmitting module is used for transmitting downlink signals to the first terminal equipment or receiving uplink signals from the first terminal equipment on the first frequency domain resource through the service beam corresponding to the first terminal equipment.

In some possible designs, the horizontal direction of the second SSB beam is the same as the horizontal direction of the traffic beam with which the second SSB beam is associated; alternatively, the difference between the horizontal direction of the second SSB beam and the horizontal direction of the traffic beam associated with the second SSB beam is less than a threshold. Wherein the second SSB beam is any SSB beam of the plurality of SSB beams of the first cell.

In a fourth aspect, there is provided a communication apparatus comprising: a processor and a memory; the memory is for storing computer instructions which, when executed by the processor, cause the communications device to perform the method of any of the aspects. The communication means may be the network device of the first aspect or a device comprised in the network device, such as a chip or a system-on-chip.

In a fifth aspect, there is provided a communication apparatus comprising: a processor and a communication interface; the communication interface is used for communicating with a module outside the communication device; the processor is configured to execute a computer program or instructions to cause the communication device to perform the method of any of the aspects. The communication means may be the network device of the first aspect or a device comprised in the network device, such as a chip or a system-on-chip.

In a sixth aspect, there is provided a communication apparatus comprising: at least one processor; the processor is configured to execute a computer program or instructions stored in the memory to cause the communication device to perform the method of any of the aspects. The memory may be coupled to the processor or may be separate from the processor. The communication means may be the network device of the first aspect or a device comprised in the network device, such as a chip or a system-on-chip.

In a seventh aspect, there is provided a computer readable storage medium having stored therein a computer program or instructions which, when run on a communication device, enable the communication device to perform the method of any of the aspects.

In an eighth aspect, there is provided a computer program product comprising instructions which, when run on a communications apparatus, cause the communications apparatus to perform the method of any of the aspects.

In a ninth aspect, there is provided a communications device (e.g. which may be a chip or a system of chips) comprising a processor for carrying out the functions referred to in any of the aspects.

In some possible designs, the communication device includes a memory for holding necessary program instructions and data.

In some possible designs, the device may be a system-on-chip, may be formed from a chip, or may include a chip and other discrete devices.

It is to be understood that when the communication device provided in any one of the third to ninth aspects is a chip, the transmitting action/function of the communication device may be understood as outputting information, and the receiving action/function of the communication device may be understood as inputting information.

The technical effects of any one of the design manners of the third aspect to the ninth aspect may be referred to the technical effects of the different design manners of the first aspect, and are not described herein.

Drawings

FIG. 1 is a schematic diagram of SSB beam scanning provided herein;

fig. 2 is a schematic diagram of a frequency domain resource allocation based on PCI modulo 3 provided in the present application;

FIG. 3 is a schematic view of a user profile provided in the present application;

fig. 4 is a schematic diagram of beam contrast of 4G and 5G provided in the present application;

fig. 5 is a schematic structural diagram of a communication system provided in the present application;

fig. 6 is a schematic flow chart of an interference control method provided in the present application;

fig. 7 is a schematic diagram of a horizontal direction relationship between SSB beams and service beams provided in the present application;

Fig. 8 is a schematic flow chart of another interference control method provided in the present application;

fig. 9 is a schematic diagram of another frequency domain resource allocation based on PCI modulo 3 provided in the present application;

fig. 10 is a schematic diagram of frequency domain resource allocation of a beam level provided in the present application;

fig. 11 is a schematic structural diagram of a communication device provided in the present application;

fig. 12 is a schematic structural diagram of another communication device provided in the present application;

fig. 13 is a schematic structural diagram of another communication device provided in the present application.

Detailed Description

In the description of the present application, unless otherwise indicated, "/" means that the associated object is an "or" relationship, e.g., a/B may represent a or B; the term "and/or" in this application is merely an association relation describing an association object, and means that three kinds of relations may exist, for example, a and/or B may mean: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural.

In the description of the present application, unless otherwise indicated, "a plurality" means two or more than two. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", and the like are used to distinguish the same item or similar items having substantially the same function and effect. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ.

In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion that may be readily understood.

It is appreciated that reference throughout this specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the various embodiments are not necessarily all referring to the same embodiment throughout the specification. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence number of each process does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

It should be understood that, in the present application, "…" and "if" refer to a process that is performed under some objective condition, and are not limited in time, nor do they require a judgment action when implemented, nor are they meant to be limiting.

It can be appreciated that some optional features of the embodiments of the present application may be implemented independently in some scenarios, independent of other features, such as the scheme on which they are currently based, to solve corresponding technical problems, achieve corresponding effects, or may be combined with other features according to requirements in some scenarios. Accordingly, the apparatus provided in the embodiments of the present application may also implement these features or functions accordingly, which is not described herein.

Throughout this application, unless specifically stated otherwise, identical or similar parts between the various embodiments may be referred to each other. In the various embodiments and the various implementation/implementation methods in the various embodiments in this application, if no special description and logic conflict exist, terms and/or descriptions between different embodiments and between the various implementation/implementation methods in the various embodiments may be consistent and may be mutually referred to, technical features in the different embodiments and the various implementation/implementation methods in the various embodiments may be combined to form new embodiments, implementations, implementation methods, or implementation methods according to their inherent logic relationships. The embodiments of the present application described below do not limit the scope of the present application.

For the convenience of understanding the technical solutions of the embodiments of the present application, a brief description of the related art of the present application is given below.

1. Beam:

a beam is understood to be a communication resource. The technique of forming the beam may be a beamforming technique or other technical means. Different beams may be considered different resources.

The beams may be represented in the protocol specifically by indexes of various signals (or resources), such as by resource indexes of channel state information reference signals (channel state information reference signal, CSI-RS), synchronization signal block (synchronization signal block, SSB), resource indexes of sounding reference signals (sounding reference signal, SRS), resource indexes of tracking reference signals (tracking reference signal, TRS), etc.

The beam may also be embodied in a protocol such as spatial filter (spatial domain filter), spatial filter (spatial filter), spatial parameter (spatial domain parameter), spatial parameter (spatial parameter), spatial setting (spatial domain setting), spatial setting (QCL) information, QCL hypothesis, QCL indication, etc. The beam may be indicated by a transmission configuration indication (transmission configuration indication, TCI) state (TCI-state) parameter or by a spatial relationship (spatial relationship) parameter. Therefore, in this application, the beam may be replaced by a spatial filter, a spatial parameter, a spatial setting, QCL information, a QCL hypothesis, a QCL indication, a TCI-state, or a spatial relationship. The terms are also equivalent to each other. The beams in this application may also be replaced with other terms that denote beams, and this application is not limited thereto.

In the following embodiments of the present application, a beam for transmitting SSB is referred to as SSB beam. By way of example, SSB beams may be represented by SSB index, QCL information, QCL hypothesis, QCL indication, TCI-state, or spatial relationship, etc. The beam used to transmit traffic (or data) is referred to as a traffic beam.

2、SSB：

In general, the primary synchronization signal (primary synchronization signal, PSS), the secondary synchronization signal (secondary synchronization signal, SSS), and the physical broadcast channel (physical broadcast channel, PBCH) may be collectively referred to as SSB.

In an NR system, a network device may transmit SSBs by means of beam scanning, i.e. multiple SSBs on different beams in a time division multiplexed manner. Illustratively, as shown in fig. 1, the network device may transmit SSB 0 through SSB N on different beams. The plurality of SSBs transmitted through beam scanning may be referred to as a synchronization signal (synchronization signal, SS) burst set (SS burst set). For example, SSB 0 to SSB N in fig. 1 may be referred to as one synchronization signal burst set.

Under a light load scene (for example, the load is not more than 33%), the frequency domain interference randomization scheme of the physical cell identification (physical cell identifier, PCI) module 3 is adopted, so that the frequency domain starting positions used by all cells are staggered, and the same-frequency interference is reduced.

For example, referring to fig. 2, it is assumed that the pillars in fig. 2 represent all frequency domain resources that the cell can use, and the black filled portions represent frequency domain resources that the cell actually uses. Taking cell 0, cell 1 and cell 2 as co-frequency cells as an example, as shown in (a) of fig. 2, when the interference randomization scheme of PCI mode 3 is not used, the frequency domain resources of each cell start from the low frequency position of the frequency band, so that most of the frequency domain resources used by each cell overlap, and co-frequency interference between cells is serious. As shown in (b) of fig. 2, when the interference randomization scheme of the PCI modulo 3 is used, different frequency domain resource starting positions may be allocated to each cell based on the value after the PCI modulo 3, so that the frequency domain resources used by each cell are staggered as much as possible. Under the scene that the load is not more than 33%, the frequency domain resources used by each cell are not overlapped completely, and the same-frequency interference avoidance is realized.

However, the following drawbacks exist in the interference randomization scheme based on PCI modulo 3:

on the one hand, once the values obtained by taking the modulus of the PCI of the serving cell and the neighbor cell to 3 are the same, the starting positions of the frequency domain resources of the serving cell and the neighbor cell are the same, so that resource collision occurs, and the interference control effect is greatly reduced. From the statistical data of the existing network, the conflict proportion of the initial positions of the frequency domain resources is higher, and 30% of users in the networking scene can be interfered by neighbor signals with the same PCI module 3 value.

On the other hand, there may be two cells with different PCI mode 3 values in the system, and two terminal devices respectively located in the two cells are far apart and have smaller traffic. In this scenario, there is no strong interference between the two terminal devices. However, based on the interference randomization scheme of PCI mode 3, different frequency domain resource starting positions will be configured for the two cells, resulting in resource waste, so that insufficient resources are allocated to the cells with strong interference, and thus the interference control efficiency is lower.

In yet another aspect, inter-neighbor interference is not present in all beam directions within a cell. When different frequency domain resource starting positions are allocated to two cells based on the interference randomization scheme of PCI model 3, the frequency domain starting positions of all beams in different cells are staggered, which may cause resource waste and lower interference control efficiency.

Illustratively, as shown in FIG. 3, assume that PCI modulo 3 for cell A is equal to 0, PCI modulo 3 for cell B is equal to 1, and PCI modulo 3 for cell C is equal to 2. The terminal devices in cell a are distributed in the beam directions of beam 2, beam 3, and beam 4 of cell a, and the terminal devices in cell C are distributed in the beam directions of beam 2, beam 3, and beam 4 of cell C. However, the beam directions of the beams 2, 3, 4 of the cell a and the beams 2, 3, 4 of the cell C are staggered, and thus there is no significant interference between the cell a and the cell C. However, based on the interference randomization scheme of PCI mode 3, different frequency domain resource starting positions will be configured for cell a and cell C, so that the frequency domain starting positions of the beams of cell a and cell C are staggered, resulting in resource waste.

Furthermore, in the interference randomization scheme of PCI modulo 3, different beams of the same cell use the same frequency domain resource starting position. I.e. the interference randomization scheme of PCI modulo 3, can be understood as cell-level interference control.

As shown in fig. 4, the horizontal bandwidth of the service beam is smaller in the fifth generation (5th generation,5G) system than in the fourth generation (4th generation,4G) system, and interference between the service beams is probabilistic interference between narrow beams, so that there is a possibility that interference avoidance between beams, that is, the 5G system supports an interference control scheme at a beam level.

Based on the above, the interference control scheme can realize the frequency domain initial position configuration of the beam level, so that the refined frequency domain initial position staggering is realized, the interference control efficiency is improved, the interference is further reduced, and the user experience is improved. Furthermore, as the refined frequency domain starting position configuration can be realized, the same frequency domain starting position can be configured for the wave beam without obvious interference, and the resource waste is avoided.

The technical solutions provided herein may be used in various communication systems, which may be a third generation partnership project (3rd generation partnership project,3GPP) communication system, for example, a 4G long term evolution (long term evolution, LTE) system, an evolved LTE system (LTE-Advanced, LTE-a) system, a 5GNR system, a car networking (vehicle to everything, V2X) system, a system of LTE and NR hybrid networking, or a device-to-device (D2D) system, a machine-to-machine (machine to machine, M2M) communication system, an internet of things (internet of things, ioT), and other next generation communication systems, etc. Alternatively, the communication system may be a non-3 GPP communication system, without limitation.

The above-mentioned communication system to which the present application is applied is merely an example, and the communication system to which the present application is applied is not limited thereto, and is generally described herein, and will not be described in detail.

As shown in fig. 5, a schematic structural diagram of one possible communication system provided in the present application is provided. The communication system is illustrated in fig. 5 as comprising at least one network device 510 and at least one terminal device 520 connected to the network device 510. It should be understood that the number of terminal devices and network devices in fig. 5 is by way of example only, and more or fewer may be provided.

Optionally, the network device 510 in the embodiment of the present application is a device for accessing the terminal device 520 to a wireless network, where the network device 510 may be a node in a radio access network (radio access network, RAN), which may also be referred to as a base station, and may also be referred to as a radio access network node (or device).

For example, the network device may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in an LTE system or an LTE-a system, such as a conventional macro base station eNB and a micro base station eNB in a heterogeneous network scenario. Alternatively, a next generation node B (next generation node B, gNB) in the NR system may be included. Alternatively, a transmission reception point (transmission reception point, TRP), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), a baseband pool (BBU pool), or a wireless fidelity (wireless fidelity, wiFi) Access Point (AP), etc. may be included. Alternatively, a base station in the NTN, i.e. deployed on an aerial platform or satellite, may be included, where the network device may act as a layer 1 (L1) relay, or may act as a base station, or may act as an access backhaul integrated (integrated access and backhual, IAB) node. Alternatively, the network device may be a device in the IoT that implements base station functionality, such as V2X, D2D, or a device in the machine-to-machine (machine to machine, M2M) that implements base station functionality.

The network device may also be a module or unit capable of implementing the functions of the base station part, for example, the network device may be a Centralized Unit (CU), a Distributed Unit (DU), a CU-Control Plane (CP), a CU-User Plane (UP), or a Radio Unit (RU), etc. Alternatively, the network device may be an access network device or a module of an access network device in an open radio access network (ora) system. In an ORAN system, a CU may also be referred to as an open (O) -CU, a DU may also be referred to as an O-DU, a CU-CP may also be referred to as an O-CU-CP, a CU-UP may also be referred to as an O-CU-UP, and a RU may also be referred to as an O-RU.

Alternatively, CUs and DUs may be partitioned according to the protocol layers of the wireless network: for example, functions of a packet data convergence layer protocol (packet data convergence protocol, PDCP) layer and above protocol layers (e.g., a radio resource control (radio resource control, RRC) layer and a service data adaptation protocol (service data adaptation protocol, SDAP) layer, etc.) are set at the CU, and functions of a PDCP layer below protocol layers (e.g., a radio link control (radio link control, RLC) layer, a medium access control (media access control, MAC) layer, or a Physical (PHY) layer, etc.) are set at the DU; for example, the functions of the PDCP layer and the above protocol layers are set in the CU, and the functions of the PDCP layer and the below protocol layers are set in the DU, without limitation.

The above-described partitioning of CU and DU processing functions by protocol layers is only an example, and may be partitioned in other ways. For example, a CU or a DU may be divided into functions having more protocol layers, and for example, a CU or a DU may be divided into partial processing functions having protocol layers. For example, a part of functions of the RLC layer and functions of protocol layers above the RLC layer are set at CU, and the remaining functions of the RLC layer and functions of protocol layers below the RLC layer are set at DU. For another example, the functions of the CU or the DU may be divided according to a service type or other system requirements, for example, by time delay division, where a function whose processing time needs to meet the time delay requirement is set in the DU, and a function which does not need to meet the time delay requirement is set in the CU.

Alternatively, the base station in the embodiments of the present application may include various forms of base stations, for example: macro base station, micro base station (also referred to as a small station), relay station, access point, home base station, TRP, transmitting point (transmitting point, TP), mobile switching center, etc., which the embodiments of the present application do not specifically limit.

Alternatively, the terminal device 520 in the embodiment of the present application may be a user side device for implementing a wireless communication function, for example, a terminal or a chip that may be used in the terminal. The terminal may be a User Equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a remote terminal, a mobile device, a wireless communication device, a terminal agent, a terminal apparatus, or the like in a 5G network or a public land mobile network (public land mobile network, PLMN) that evolves after 5G. An access terminal may be a cellular telephone, cordless telephone, session initiation protocol (session initiation protocol, SIP) phone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication capability, computing device or other processing device connected to a wireless modem, vehicle-mounted device or wearable device, virtual Reality (VR) terminal device, augmented reality (augmented reality, AR) terminal device, wireless terminal in industrial control (industrial control), wireless terminal in self-driving (self-driving), wireless terminal in telemedicine (remote medium), wireless terminal in smart grid (smart grid), wireless terminal in transportation security (transportation safety), wireless terminal in smart city (smart city), wireless terminal in smart home (smart home), etc. Alternatively, the terminal may be a terminal in IoT with communication functionality, such as a terminal in V2X (e.g., an internet of vehicle device), a terminal in D2D communication, or a terminal in M2M communication, etc. The terminal may be mobile or stationary.

The method provided in the embodiment of the present application will be described in detail below with reference to the accompanying drawings. It will be understood that in the embodiments of the present application, the network device or the terminal device may perform some or all of the steps in the embodiments of the present application, these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or variations of various operations. Furthermore, the various steps may be performed in a different order presented in accordance with embodiments of the present application, and it is possible that not all of the operations in the embodiments of the present application may be performed.

As shown in fig. 6, an interference control method provided in the present application includes the following steps:

s601, network equipment acquires frequency domain resource starting positions corresponding to a plurality of SSB beams of a first cell.

Wherein, the frequency domain resource starting positions corresponding to at least two SSB beams are different. For example, if the total number of the frequency domain resource start positions in the entire frequency band is N, the frequency domain resource start positions corresponding to the N SSB beams may be different from each other in the plurality of SSB beams.

Alternatively, the frequency domain resource in the embodiment of the present application may be represented by a resource element (resource element, RE) or a Resource Block (RB). The frequency domain resource start position corresponding to the SSB beam may be represented by an RE index or an RB index.

Alternatively, the plurality of SSB beams may be all SSB beams of the first cell, or may be part of SSB beams of the first cell, which is not specifically limited in this application.

Alternatively, the network device may transmit the SSB beam by means of beam scanning. That is, the directions of different SSB beams among the plurality of SSB beams are different.

Optionally, the network device obtaining the frequency domain resource starting positions corresponding to the SSB beams of the first cell may include: the network equipment autonomously determines the frequency domain resource starting positions corresponding to a plurality of SSB beams of the first cell; alternatively, the starting positions of the frequency domain resources corresponding to the plurality of SSB beams received by the network device from the first cell of the other device or the platform will be described in the following embodiments, which will not be described herein.

S602, the network equipment determines a first service beam. The first service beam is a service beam corresponding to the first terminal device.

The first terminal equipment is terminal equipment in a first cell. Or, the first cell is a serving cell of the first terminal device.

Optionally, the first terminal device corresponds to the first service beam, which can be understood as: the first terminal device is within the coverage area of the first service beam, or in other words, the first terminal device is in the direction of the first service beam.

Wherein the first traffic beam is associated with a first SSB beam of the plurality of SSB beams of the first cell. Illustratively, the horizontal direction of the first traffic beam is the same as the horizontal direction of the first SSB beam; alternatively, the difference between the horizontal direction of the first traffic beam and the horizontal direction of the first SSB beam is less than a threshold.

Optionally, each SSB beam of the plurality of SSB beams of the first cell may be associated with at least one traffic beam. For any one SSB beam (referred to as a second SSB beam) of the plurality of SSB beams, the horizontal direction of the second SSB beam is the same as the horizontal direction of the traffic beam with which the second SSB beam is associated; alternatively, the difference between the horizontal direction of the second SSB beam and the horizontal direction of the traffic beam associated with the second SSB beam is less than a threshold. The threshold may be protocol defined or may be determined by the network device, as this application is not specifically limited.

Illustratively, taking the example that the number of SSB beams of the first cell is 8, and the network device is a massive (massive) multiple-input multiple-output (multiple input multiple output, MIMO) device of 64 transceiving channels (i.e., 64TRxMM device), the network device may divide 32 traffic beams into 8 horizontal directions and 4 vertical directions. Irrespective of the vertical direction difference, as shown in fig. 7, referring to 90 ° to-90 ° of the upper half, the horizontal directions of the 7 SSB beams and the 7 horizontal directions of the 32 service beams substantially coincide; another horizontal direction of the 32 service beams may be derived from the horizontal direction of another SSB beam (not shown in fig. 7).

Optionally, the network device measures signal quality of a sounding reference signal (sounding reference signal, SRS) from the first terminal device on a plurality of service beams associated with a plurality of SSB beams of the first cell. And then, determining the service beam with the strongest signal quality of the SRS from the service beams as the first service beam. Based on this step, the network device may consider the first terminal device to be within the coverage area of the first service beam, or, alternatively, consider the first terminal device to be in the direction of the first service beam.

And S603, the network equipment provides service for the first terminal equipment on the first frequency domain resource through the first service beam. The starting position of the first frequency domain resource is the starting position of the frequency domain resource corresponding to the first SSB wave beam.

Optionally, the network device provides services for the first terminal device on the first frequency domain resource through the first service beam, which may include: the network device sends downlink signals to the first terminal device on the first frequency domain resource through the first service beam and/or receives uplink signals from the first terminal device.

In addition, the frequency domain resource starting positions are configured by taking the beams as granularity, so that the same frequency domain starting positions can be configured for different beams with smaller traffic and weaker interference, resource waste is reduced, enough different frequency domain starting positions can be reserved for the beams with stronger interference, and interference control efficiency is improved.

The above describes the flow of the interference control scheme provided in the present application in its entirety. The detailed implementation of each step is described below.

Alternatively, taking the network device autonomously determining the frequency domain resource starting positions corresponding to the SSB beams of the first cell as an example, as shown in fig. 8, the above step S601 may be implemented by the following steps S6011 and S6012. The steps S6011 and S6012 include:

s6011, the network device determines at least one SSB beam pair.

Wherein the SSB beam pair is composed of two SSB beams. The at least one SSB beam pair includes an SSB beam pair corresponding to the first cell. One of the SSB beams in the SSB beam pair corresponding to the first cell is the SSB beam of the first cell, and the other SSB beam is the interference beam. The interference beam is an SSB beam of a neighbor cell of the first cell. By way of example, an interference beam may be understood a beam that causes interference to a beam of a serving cell of the terminal device.

Alternatively, the network device may determine an interference matrix for at least one cell and determine at least one SSB beam pair based on the interference matrix for the at least one cell.

Optionally, the interference matrix of any one of the at least one cell (denoted as cell a) comprises an amount of interference of SSB beam pairs formed by respective SSB beams of cell a and respective SSB beams of cell B. Wherein the amount of interference of an SSB beam pair indicates the interference (or interference probability) of the interfering beam of the SSB beam pair to the other SSB beam. Cell B may include some or all of the at least one cell except cell a. At this time, the SSB beam of the cell B serves as an interference beam in the SSB beam pair.

Alternatively, the at least one cell may include a first cell, and the interference matrix of the first cell is an interference amount of an SSB beam pair formed by a plurality of SSB beams of the first cell and respective SSB beams of the second cell. The second cell includes some or all of the at least one cell except the first cell. The SSB beam of the second cell acts as an interference beam in the SSB beam pair.

Illustratively, taking the example that the number of SSB beams of the first cell is 8 and the number of SSB beams of a certain neighbor cell of the first cell is also 8, the interference matrix of the first cell may be expressed as the following form of table 1:

TABLE 1

Wherein SSB beam Ax represents the SSB beam of the first cell; SSB beam Bx represents the SSB beam of a certain neighbor of the first cell. As shown in table 1, 8.7% corresponding to SSB beam A0 and SSB beam B0 indicates that SSB beam 0 of the neighboring cell has an interference amount of 8.7% to SSB beam 0 of the first cell.

The above description has been made with respect to the interference matrix of the first cell by taking only one neighboring cell of the first cell as an example. When the neighboring cell of the first cell includes a plurality of cells, the interference matrix of the first cell needs to be increased by X columns based on table 1, and each column corresponds to one SSB beam of the other neighboring cell of the first cell.

The above description is given taking the interference matrix of the first cell as an example. The interference matrix of the other cells is similar to the interference matrix of the first cell, and reference may be made to the description of the interference matrix of the first cell, which is not repeated here.

Alternatively, the at least one cell may be a cell managed by the same network device. Alternatively, the at least one cell may include a plurality of cells managed by the network device. In this scenario, each network device may determine an interference matrix of its managed cell and send the determined interference matrix to the network device executing the embodiment of the present application.

As a possible implementation, after determining the interference matrix of at least one cell, the network device may determine that the at least one SSB beam pair includes SSB beam pairs corresponding to first M interference amounts with the largest value in the interference matrix of the at least one cell, where M is a positive integer.

For example, taking the interference matrix of at least one cell as the interference matrix of the first cell as an example, assuming that M is equal to 6, the at least one SSB beam pair includes SSB beam pairs corresponding to the first 6 interference amounts with the largest values. Based on the example shown in table 1, the first 6 interference amounts with the largest values are 18.6%, 18.4%, 13.4%, 8.7%, 6.5%, 5.0%, and the corresponding SSB beam pairs are respectively: { SSB beam A7, SSB beam B6}, { SSB beam A7, SSB beam B0}, { SSB beam A7, SSB beam B3}, { SSB beam A0, SSB beam B0}, { SSB beam A7, SSB beam B5}, { SSB beam A5, SSB beam B7}. As another possible implementation, after determining the interference matrix of at least one cell, the network device may determine that the at least one SSB beam pair includes SSB beam pairs corresponding to all interference amounts in the interference matrix of the at least one cell.

Illustratively, taking the interference matrix of at least one cell as the interference matrix of the first cell as an example, based on the example shown in table 1, the at least one SSB beam pair includes all (total 64) SSB beam pairs shown in table 1.

S6012, the network device determines, according to the interference amount, the isolation degree, and the total number of frequency domain start positions of at least one SSB beam pair, a frequency domain start position corresponding to each SSB beam in the at least one SSB beam pair.

Wherein the amount of interference of an SSB beam pair indicates the interference (or interference probability) of the interfering beam of the SSB beam pair to the other SSB beam. The isolation indicates the separation between the frequency domain starting positions of the two SSB beams. The total number of frequency domain start positions may be protocol defined or may be determined by the network device, which is not specifically limited in this application.

Optionally, the amount of interference of the SSB beam pair is determined by the signal quality of the two SSB beams in the SSB beam pair, and the traffic of the cell to which the two SSB beams belong. For example, the amount of interference of the SSB beam pair corresponding to the first cell is determined by the following parameters: the signal quality of the SSB beam of the first cell, the signal quality of the interfering beam (SSB beam of the neighboring cell of the first cell) in the SSB beam pair, the traffic of the first cell, the traffic of the cell to which the interfering beam belongs (denoted as the second cell).

Alternatively, the signal quality of the SSB beam may be represented by reference signal received power (reference signal receiving power, RSRP), reference signal received quality (reference signal received quality, RSRQ), or the like, which is not particularly limited in this application. In addition, the signal quality of the SSB beam may also be referred to as the level of the SSB beam, and the two may be replaced with each other.

For example, the amount of interference of the SSB beam pair corresponding to a certain serving cell may be as follows:

the amount of interference of SSB beam pairs corresponding to the serving cell= (signal quality of SSB beam of the serving cell-signal quality of interference beam of the neighboring cell) × (traffic of the serving cell + traffic of the neighboring cell).

That is, when the first cell is a serving cell, the amount of interference of the SSB beam pair corresponding to the first cell may satisfy:

the amount of interference of the SSB beam pair corresponding to the first cell= (signal quality of SSB beam of the first cell-signal quality of interference beam) × (traffic of the first cell+traffic of the second cell).

Alternatively, the signal quality of the SSB beam and the traffic of the cell may be reported by the terminal device. Illustratively, the first terminal device may send a measurement report (measurement report, MR) to the network device. Accordingly, the network device may receive a measurement report from the first terminal device. The measurement report from the first terminal device may indicate at least one of a signal quality of an SSB beam of the first cell, a signal quality of an interfering beam (i.e. an SSB beam of the second cell), or traffic of the first cell.

Optionally, the second terminal device located in the second cell (i.e. the serving cell of the second terminal device is the second cell) may also send a measurement report to the network device. Accordingly, the network device may receive a measurement report from the second terminal device. The measurement report from the second terminal device may indicate the traffic volume of the second cell. Further, the measurement report from the second terminal device may further indicate information for determining an interference matrix of the second cell, such as signal quality of an SSB beam of the second cell, signal quality of an SSB beam of a neighboring cell of the second cell (an interference beam for the second cell), and so on.

Alternatively, the network device may solve the optimization problem to obtain a frequency domain starting position indicating a corresponding frequency domain for each SSB beam in one SSB beam pair. The optimization problem may be derived based on constraints and minimizing an objective function.

Wherein the objective function is determined by the amount of interference of at least one SSB beam pair, the total number of frequency domain starting positions, and the variance. Isolation is the solution of the variable in the optimization problem.

As a possible implementation, the optimization problem is:

min∑ _mn (Interference _mn *(N-Isolaion _mn ))subject to Isolation _mn ∈[0,N-1]

wherein, interface _mn The amount of interference of the SSB beam pair constituted for SSB beam m and SSB beam n. N is the total number of the frequency domain starting positions. Isolation of _mn Isolation to Isolation _mn ＝|Pos _m -Pos _n |；Pos _m Index of frequency domain starting position corresponding to SSB wave beam m, pos _n Is the index of the frequency domain starting position corresponding to the SSB beam n. Isolation of _mn ∈[0,N-1]Is a constraint.

∑ _mn Representing (Interference) for each of the at least one SSB beam pair _mn *(N-Isolation _mn ) A) is summed.

As another possible implementation, the optimization problem is:

wherein, sameSiteFlag _mn For indicating whether or not SSB beams m and n belong to the same cell, if SSB beams m and nBelonging to the same cell, sameSiteFlag _mn =0, if SSB beam m and SSB beam n do not belong to the same cell, sameSiteFlag _mn ＝1。

Optionally, (N-Isolation) _mn ) May be referred to as an interference affecting factor or an interference weight. The smaller the Isolation, the closer the corresponding frequency domain start positions of the two SSB beams are, (N-Isolation) _mn ) The larger the value of (2), the greater its effect on the amount of interference; the greater the Isolation, the further the corresponding frequency domain start positions of the two SSB beams, (N-Isolation) _mn ) The smaller the value of (c), the better the interference control effect. In addition, the optimization problem can search a better solution after summing up the products of the interference amounts of all SSB beam pairs and the influence factors thereof, namely, comprehensively considering the interference among a plurality of SSB beams of a plurality of cells in the network, and performing interference control from the whole network angle, thereby reducing the interference level of the whole network.

Alternatively, at least one cell in the above steps S6011 and S6012 may be a partial cell in an optimization area (or referred to as an interference control area). The network device may determine an optimization area in advance, select a part of cells from the optimization area, and perform the steps S6011 and S6012, to obtain the frequency domain resource starting positions corresponding to the SSB beams of each cell in the part of cells. After that, other cells in the optimization area may be selected to execute the steps S6011 and S6012 described above until the frequency domain resource starting positions corresponding to the SSB beams of all the cells in the optimization area are determined.

Based on the above, the optimization area can be divided into a plurality of smaller areas, and the starting positions of the frequency domain resources corresponding to the SSB beams of each cell in each small area are respectively determined by taking the small areas as granularity. Compared with the scheme of solving the starting positions of the frequency domain resources corresponding to the SSB beams of all cells in the whole optimization area at one time, the method has the advantages that the requirement on the computing capacity can be reduced, and the optimization efficiency is improved.

The above description is given taking the network device to determine the starting position of the frequency domain resource corresponding to the SSB beam of each cell as an example. In addition, the starting position of the frequency domain resource corresponding to the SSB beam of each cell can also be determined by other electronic devices or platforms. The platform may be determined, for example, for a mobile broadband (MBB) automation engine (MEA) platform. That is, the MAE platform may perform the steps or functions performed by the network device in the above step S601 (including S6011 and S6012) for determining the frequency domain resource start position corresponding to the SSB beam.

The MAE platform may obtain measurement reports reported by the terminal device from each network device, thereby obtaining signal quality of the SSB beam and traffic of each cell, determining an interference matrix of each cell, and solving an optimization problem to obtain a frequency domain resource starting position corresponding to the SSB beam.

Optionally, after determining the frequency domain resource starting position corresponding to the SSB beam, the MAE platform may send the frequency domain resource starting position corresponding to the SSB beam of each cell managed by each network device to the network device, so that the network device performs subsequent processing, for example, performing the steps S602 and S603 described above.

Based on the above scheme, the embodiment of the application quantifies interference among SSB beams through the signal quality of the SSB beams and the traffic of cells, and the traffic distribution is analyzed to identify SSB beam pairs with stronger interference. And constructing an objective function based on the interference quantity, converting the configuration of the beam-level frequency domain resource starting position into an optimization problem, and obtaining the frequency domain resource starting position corresponding to the SSB beam by solving the optimization problem. The network equipment can take the frequency domain resource starting position corresponding to the SSB wave beam as the frequency domain resource starting position of the corresponding service wave beam, so that the configuration of the frequency domain resource starting position of the service wave beam level is realized, the degree of freedom of the configuration of the frequency domain resource starting position is improved, the fine frequency domain starting position staggering is realized, and the interference control efficiency is improved.

The PCI mode 3-based scheme and the applied scheme are described in comparison with specific examples. Illustratively, as shown in fig. 9, it is assumed that a network device 1 in a network manages a cell 0, a cell 1, and a cell 2, and that the network device 2 manages a cell 3. The PCI of the cells managed by the same network device is generally continuous, and the value of the modulo 3 PCI is different, so the frequency domain starting positions of the 3 cells managed by the network device 1 can be different based on the scheme of the PCI modulo 3. However, if the PCI of the cell 3 managed by the network device 2 is the same as the PCI of the cell 0 by the modulo 2 value, as shown in fig. 9, the frequency domain starting positions of the cell 3 and the cell 0 are the same, so that there is strong interference between the two cells, and the interference avoidance effect is greatly deteriorated. That is, when the scheme of the PCI model 3 is adopted, the interference avoidance effect is poor in the scene that the PCI planning allocation is unreasonable or the network equipment densely deploys more adjacent cells.

Based on the scheme provided in the embodiment of the present application, as shown in fig. 10, taking an example that the total number of the frequency domain resource starting positions is equal to 6, it is assumed that the network device 1 in the network manages the cell 0, the cell 1, and the cell 2, the network device 2 manages the cell 3, and the network device can configure the frequency domain resource starting positions with the beam as granularity. Moreover, by quantifying interference, beam pairs with stronger interference can be identified, and different frequency domain resource starting positions are configured for the beam pairs with strong interference. For example, interference between edge beams (beam 0 and beam 7) of different cells managed by the same network device and interference between opposite beams of different cells managed by different network devices may be strong, different frequency domain resource starting positions may be allocated to the edge beams and opposite beams based on the scheme of the present application, and the remaining frequency domain resource starting positions may be allocated to other beams, so as to reduce overall network interference.

Compared with the PCI model 3 scheme, the method introduces the degree of freedom of the beam-level frequency domain resource initial position configuration, and still has sufficient degree of freedom of the frequency domain resource initial position configuration to finely allocate different frequency domain resource initial positions for interference beams under the scenes of more adjacent cells, unreasonable PCI planning and the like, so that the whole network interference is reduced, and the user experience is improved.

It will be appreciated that in the various embodiments above, the methods and/or steps implemented by a network device may also be implemented by a component (e.g., a processor, chip, system on chip, circuit, logic module, or software) that may be used in the network device; the methods and/or steps implemented by the terminal device may also be implemented by means, e.g., a processor, chip, system on chip, circuit, logic module, or software, operable with the terminal device. The chip system may be constituted by a chip, or the chip system may include a chip and other discrete devices.

It will be appreciated that the communication device, in order to achieve the above-described functions, comprises corresponding hardware structures and/or software modules performing the respective functions. Those of skill in the art will readily appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application may divide the functional modules of the communication device according to the embodiment of the method, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.

Communication device fig. 11 shows a schematic structural diagram of a communication device 110. The communication device 110 comprises a processing module 1101 and a transceiver module 1102. The communication means 110 may be adapted to implement the functions of the network device or the terminal device described above.

In some embodiments, the communication device 110 may also include a memory module (not shown in fig. 11) for storing program instructions and data.

In some embodiments, the transceiver module 1102, which may also be referred to as a transceiver unit, is configured to perform transmit and/or receive functions. The transceiver module 1102 may be formed of transceiver circuitry, a transceiver, or a communication interface.

In some embodiments, the transceiver module 1102 may include a receiving module and a transmitting module, for performing the steps of receiving and transmitting classes performed by the network device or the terminal device in the above-described method embodiments, respectively, and/or for supporting other processes of the techniques described herein; the processing module 1101 may be configured to perform the steps of the processing classes (e.g., determining, generating, etc.) performed by the network device or the terminal device in the above-described method embodiments, and/or other processes for supporting the techniques described herein.

When the communication device 110 is configured to implement the functions of the network apparatus described above:

the processing module 1101 is configured to obtain frequency domain resource starting positions corresponding to SSB beams of a plurality of synchronization signal blocks of a first cell, where the frequency domain resource starting positions corresponding to at least two SSB beams are different. The processing module 1101 is further configured to determine a service beam corresponding to the first terminal device, where the service beam is associated with a first SSB beam of the plurality of SSB beams. And a transceiver module 1102, configured to provide a service for the first terminal device on a first frequency domain resource through the service beam, where a starting position of the first frequency domain resource is a frequency domain resource starting position corresponding to the first SSB beam.

Optionally, the processing module 1101 is configured to determine frequency domain resource starting positions corresponding to the SSB beams of the first cell, and includes: the processing module 1101 is configured to determine at least one SSB beam pair, where one of the SSB beam pairs is an SSB beam of the first cell and the other SSB beam is an interference beam. The processing module 1101 is further configured to determine a frequency domain starting position corresponding to each SSB beam in the at least one SSB beam pair according to the interference amount, the isolation degree, and the total number of frequency domain starting positions of the at least one SSB beam pair; the amount of interference of the SSB beam pair indicates interference of the interfering beam of the SSB beam pair to another SSB beam; the isolation indicates the separation between the frequency domain starting positions of the two SSB beams.

Optionally, the processing module 1101 is further configured to determine, according to the amount of interference, the isolation, and the total number of frequency domain starting positions of the at least one SSB beam pair, a frequency domain starting position corresponding to each SSB beam in the at least one SSB beam pair, where the determining includes: the processing module 1101 is further configured to solve an optimization problem to obtain a frequency domain starting position corresponding to each SSB beam in the at least one SSB beam pair, where the optimization problem is obtained based on a constraint condition and a minimized objective function, and the objective function is determined by an interference amount, a total number of frequency domain starting positions, and a variable of the at least one SSB beam pair; isolation is the solution of the variable in the optimization problem.

Optionally, the processing module 1101 is configured to determine at least one SSB beam pair, including: a processing module 1101 is configured to determine an interference matrix of at least one cell, where the at least one cell includes a first cell, and the interference matrix of the first cell includes an interference amount of SSB beam pairs formed by a plurality of SSB beams of the first cell and respective SSB beams of a second cell. The processing module 1101 is further configured to determine at least one SSB beam pair according to an interference matrix of at least one cell.

Optionally, the at least one SSB beam pair includes SSB beam pairs corresponding to first M interference amounts with the largest value in an interference matrix of the at least one cell, where M is a positive integer; alternatively, the at least one SSB beam pair includes SSB beam pairs corresponding to the total amount of interference in the interference matrix of the at least one cell.

Optionally, the amount of interference of the SSB beam pair is determined by the signal quality of the SSB beam of the first cell, the signal quality of the interference beam, the traffic of the first cell, and the traffic of the second cell, and the interference beam is a beam of the second cell.

Optionally, the amount of interference of the SSB beam pairs satisfies: the amount of interference of SSB beam pairs= (signal quality of SSB beam of first cell-signal quality of interference beam) = (traffic of first cell + traffic of second cell).

Optionally, the transceiver module 1102 is further configured to receive a measurement report MR from the first terminal device. The MR of the first terminal device indicates at least one of: the signal quality of the SSB beam of the first cell, the signal quality of the interfering beam, or the traffic of the first cell.

Optionally, the transceiver module 1102 is further configured to receive MR from a second terminal device, where a serving cell of the second terminal device is a second cell; the MR of the second terminal device indicates the traffic volume of the second cell.

Optionally, the optimization problem is:

alternatively, the optimization problem is:

Optionally, each SSB beam of the plurality of SSB beams of the first cell is associated with at least one traffic beam; a processing module 1101, configured to determine a service beam corresponding to a first terminal device, including: a processing module 1101 is configured to measure signal quality of a sounding reference signal SRS from the first terminal device on a plurality of service beams associated with a plurality of SSB beams of the first cell. And the processing module 1101 is configured to determine, from among the multiple service beams, a service beam with the strongest SRS signal quality as a service beam corresponding to the first terminal device.

Optionally, the transceiver module 1102 is configured to provide a service for the first terminal device on the first frequency domain resource through a service beam corresponding to the first terminal device, and includes: and the transceiver module 1102 is configured to send a downlink signal to the first terminal device or receive an uplink signal from the first terminal device on the first frequency domain resource through a service beam corresponding to the first terminal device.

Optionally, the horizontal direction of the second SSB beam is the same as the horizontal direction of the service beam associated with the second SSB beam; alternatively, the difference between the horizontal direction of the second SSB beam and the horizontal direction of the traffic beam associated with the second SSB beam is less than a threshold. Wherein the second SSB beam is any SSB beam of the plurality of SSB beams of the first cell.

All relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein.

In this application, the communication device 110 may be presented in the form of an integrated manner dividing the individual functional modules. "module" herein may refer to an application-specific integrated circuit (ASIC), a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other devices that can provide the described functionality.

In some embodiments, when the communication device 110 in fig. 11 is a chip or a chip system, the functions/implementation of the transceiver module 1102 may be implemented through an input/output interface (or a communication interface) of the chip or the chip system, and the functions/implementation of the processing module 1101 may be implemented through a processor (or a processing circuit) of the chip or the chip system.

Since the communication device 110 provided in the present embodiment can perform the above method, the technical effects obtained by the method can be referred to the above method embodiment, and will not be described herein.

As a possible product form, the terminal device or the network device according to the embodiments of the present application may be further implemented using the following: one or more field programmable gate arrays (field programmable gate array, FPGA), programmable logic devices (programmable logic device, PLD), controllers, state machines, gate logic, discrete hardware components, any other suitable circuit or combination of circuits capable of performing the various functions described throughout this application.

As another possible product form, the terminal device or the network device according to the embodiments of the present application may be implemented by a general bus architecture. For convenience of explanation, referring to fig. 12, fig. 12 is a schematic structural diagram of a communication device 1200 provided in an embodiment of the present application, and the communication device 1200 includes a processor 1201 and a transceiver 1202. The communication apparatus 1200 may be a network device, or a chip or chip system therein; alternatively, the communication apparatus 1200 may be a terminal device, or a chip or module therein. Fig. 12 shows only the main components of the communication apparatus 1200. In addition to the processor 1201 and the transceiver 1202, the communication device may further comprise a memory 1203, and input output devices (not shown).

Optionally, the processor 1201 is mainly configured to process the communication protocol and the communication data, and control the entire communication device, execute a software program, and process the data of the software program. The memory 1203 is mainly used for storing software programs and data. The transceiver 1202 may include radio frequency circuitry for primarily converting baseband signals to radio frequency signals and processing radio frequency signals, and antennas. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user.

In the alternative, the processor 1201, the transceiver 1202, and the memory 1203 may be connected by a communication bus.

When the communication device is turned on, the processor 1201 may read the software program in the memory 1203, interpret and execute instructions of the software program, and process data of the software program. When data needs to be transmitted wirelessly, the processor 1201 performs baseband processing on the data to be transmitted, and outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is transmitted to the communication device, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1201, and the processor 1201 converts the baseband signal into data and processes the data.

In another implementation, the radio frequency circuitry and antenna may be provided separately from the processor performing the baseband processing, e.g., in a distributed scenario, the radio frequency circuitry and antenna may be in a remote arrangement from the communication device.

In some embodiments, in a hardware implementation, one skilled in the art will appreciate that the communication device 110 described above may take the form of the communication device 1200 shown in fig. 12.

As an example, the functions/implementation procedure of the processing module 1101 in fig. 11 may be implemented by the processor 1201 in the communication apparatus 1200 shown in fig. 12 calling computer-executable instructions stored in the memory 1203. The functions/implementations of the transceiver module 1102 in fig. 11 may be implemented by the transceiver 1202 in the communications device 1200 shown in fig. 12.

As yet another possible product form, the network device or the terminal device in the present application may adopt the composition structure shown in fig. 13 or include the components shown in fig. 13. Fig. 13 is a schematic diagram illustrating a communication apparatus 1300 provided in the present application, where the communication apparatus 1300 may be a terminal device or a chip or a system on a chip in the terminal device; or may be a network device or a module or chip in a network device or a system on a chip.

As shown in fig. 13, the communication device 1300 includes at least one processor 1301 and at least one communication interface (fig. 13 is merely exemplary and includes one communication interface 1304 and one processor 1301 is illustrated as an example). Optionally, the communications device 1300 may also include a communications bus 1302 and a memory 1303.

Processor 1301 may be a general purpose central processing unit (central processing unit, CPU), general purpose processor, network processor (network processor, NP), digital signal processor (digital signal processing, DSP), microprocessor, microcontroller, programmable logic device (programmable logic device, PLD), or any combination thereof. Processor 1301 may also be other means for processing, such as, without limitation, a circuit, device, or software module.

The communication bus 1302 is used to connect different components in the communication device 1300 so that the different components can communicate. The communication bus 1302 may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA) bus, or the like. The bus may be classified as an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in fig. 13, but not only one bus or one type of bus.

A communication interface 1304 for communicating with other devices or communication networks. The communication interface 1304 may be, for example, a module, a circuit, a transceiver, or any device capable of communicating. Optionally, the communication interface 1304 may be an input/output interface located in the processor 1301, so as to implement signal input and signal output of the processor.

The memory 1303 may be a device having a storage function for storing instructions and/or data. Wherein the instructions may be computer programs.

By way of example, memory 1303 may be, but is not limited to, read-only memory (ROM) or other type of static storage device that may store static information and/or instructions, random access memory (random access memory, RAM) or other type of dynamic storage device that may store information and/or instructions, electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), compact disc read-only memory (compact disc read-only memory, CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, and the like.

It is noted that the memory 1303 may exist separately from the processor 1301 or may be integrated with the processor 1301. The memory 1303 may be located in the communication apparatus 1300 or may be located outside the communication apparatus 1300, and is not limited. Processor 1301 may be configured to execute instructions stored in memory 1303 to implement methods provided by embodiments of the present application described below.

As an alternative implementation, communications apparatus 1300 can also include an output device 1305 and an input device 1306. The output device 1305 communicates with the processor 1301 and may display information in a variety of ways. For example, the output device 1305 may be a liquid crystal display (liquid crystal display, LCD), a light emitting diode (light emitting diode, LED) display device, a Cathode Ray Tube (CRT) display device, or a projector (projector), or the like. The input device 1306 communicates with the processor 1301 and may receive user input in a variety of ways. For example, the input device 1306 may be a mouse, keyboard, touch screen device, or sensing device, among others.

In some embodiments, in a hardware implementation, one skilled in the art may appreciate that the communication device 110 illustrated in fig. 11 described above may take the form of the communication device 1300 illustrated in fig. 13.

As an example, the functions/implementation procedure of the processing module 1101 in fig. 11 may be implemented by the processor 1301 in the communication apparatus 1300 shown in fig. 13 calling computer-executed instructions stored in the memory 1303. The functions/implementations of the transceiver module 1102 in fig. 11 may be implemented by the communication interface 1304 in the communication device 1300 shown in fig. 13.

The configuration shown in fig. 13 does not constitute a specific limitation on the network device or the terminal device. For example, in other embodiments of the present application, a network device or terminal device may include more or fewer components than shown, or may combine certain components, or may split certain components, or may have a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

In some embodiments, the embodiments of the present application further provide a communication device, where the communication device includes a processor, for implementing the method in any of the method embodiments described above.

As a possible implementation, the communication device further comprises a memory. The memory is used for storing necessary computer programs and data. The computer program may comprise instructions which the processor may invoke the instructions in the computer program stored in the memory to instruct the communication device to perform the method in any of the method embodiments described above. Of course, the memory may not be in the communication device.

As another possible implementation, the communication apparatus further includes an interface circuit, which is a code/data read/write interface circuit, for receiving computer-executable instructions (the computer-executable instructions are stored in a memory, may be read directly from the memory, or may be transmitted to the processor via other devices).

As a further possible implementation, the communication device further comprises a communication interface for communicating with a module outside the communication device.

It will be appreciated that the communication device may be a chip or a chip system, and when the communication device is a chip system, the communication device may be formed by a chip, or may include a chip and other discrete devices, which are not specifically limited in this embodiment of the present application.

The present application also provides a computer readable storage medium having stored thereon a computer program or instructions which when executed by a computer, performs the functions of any of the method embodiments described above.

The present application also provides a computer program product which, when executed by a computer, implements the functions of any of the method embodiments described above.

Those skilled in the art will understand that, for convenience and brevity, the specific working process of the system, apparatus and unit described above may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.

It will be appreciated that the systems, apparatus, and methods described herein may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

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

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

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, etc. that can be integrated with the medium. The usable medium may 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 (e.g., a Solid State Disk (SSD)), or the like. In an embodiment of the present application, the computer may include the apparatus described above.

Although the present application has been described herein in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the figures, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present application has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the present application as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the present application. It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A method of interference control, the method comprising:

acquiring frequency domain resource starting positions corresponding to a plurality of SSB beams of a synchronous signal block of a first cell, wherein the frequency domain resource starting positions corresponding to at least two SSB beams are different;

determining a service beam corresponding to a first terminal device, wherein the service beam is associated with a first SSB beam in the plurality of SSB beams;

and providing service for the first terminal equipment on a first frequency domain resource through the service beam, wherein the starting position of the first frequency domain resource is the starting position of the frequency domain resource corresponding to the first SSB beam.

2. The method of claim 1, wherein determining the frequency domain resource starting locations for the plurality of SSB beams of the first cell comprises:

determining at least one SSB beam pair, one of which is an SSB beam of the first cell and the other of which is an interference beam;

determining a frequency domain starting position corresponding to each SSB wave beam in the at least one SSB wave beam pair according to the interference amount, the isolation degree and the total number of the frequency domain starting positions of the at least one SSB wave beam pair; the amount of interference of an SSB beam pair indicates interference of an interference beam of the SSB beam pair to another SSB beam; the isolation indicates the interval between the frequency domain starting positions of the two SSB beams.

3. The method of claim 2, wherein the determining the frequency domain starting position for each SSB beam in the at least one SSB beam pair based on the amount of interference, the isolation, and the total number of frequency domain starting positions for the at least one SSB beam pair comprises:

solving an optimization problem to obtain a frequency domain starting position corresponding to each SSB beam in the at least one SSB beam pair, wherein the optimization problem is obtained based on constraint conditions and a minimized objective function, and the objective function is determined by the interference quantity of the at least one SSB beam pair, the total number of the frequency domain starting positions and a variable; the isolation is a solution of the variable in the optimization problem.

4. A method according to claim 2 or 3, wherein said determining at least one SSB beam pair comprises:

determining an interference matrix of at least one cell, wherein the at least one cell comprises the first cell, and the interference matrix of the first cell comprises interference amounts of SSB beam pairs formed by a plurality of SSB beams of the first cell and respective SSB beams of a second cell;

the at least one SSB beam pair is determined from the interference matrix of the at least one cell.

5. The method of claim 4, wherein the at least one SSB beam pair comprises SSB beam pairs corresponding to first M largest interference amounts in an interference matrix of the at least one cell, M being a positive integer; or,

the at least one SSB beam pair includes SSB beam pairs corresponding to all interference amounts in an interference matrix of the at least one cell.

6. The method of any of claims 2-5, wherein the amount of interference of the SSB beam pair is determined by a signal quality of an SSB beam of the first cell, a signal quality of the interfering beam, traffic of the first cell, and traffic of a second cell, the interfering beam being a beam of the second cell.

7. The method of claim 6, wherein the amount of interference of the SSB beam pairs satisfies:

the amount of interference of the SSB beam pair= (signal quality of SSB beam of the first cell-signal quality of the interfering beam) × (traffic of the first cell + traffic of the second cell).

8. The method according to claim 6 or 7, characterized in that the method further comprises: receiving a measurement report MR from the first terminal device;

The MR of the first terminal device indicates at least one of: the signal quality of the SSB beam of the first cell, the signal quality of the interfering beam, or the traffic of the first cell.

9. The method according to any one of claims 6-8, further comprising: receiving MR from a second terminal device, wherein a service cell of the second terminal device is the second cell; the MR of the second terminal device indicates the traffic volume of the second cell.

10. The method according to any one of claims 2-9, wherein the optimization problem is:

alternatively, the optimization problem is:

min∑ _mn (Interference _mn *(N-Isolation _mn )*SameSiteFlag _mn )subject to Islation _mn ∈[0,N-1]

wherein, interface _mn The amount of interference of the SSB beam pair consisting of SSB beam m and SSB beam n; n is the total number of the frequency domain initial positions; islaw _mn Isolation to Isolation _mn ＝|Pos _m -Pos _n |；Pos _m Index of frequency domain starting position corresponding to SSB wave beam m, pos _n Index of the frequency domain starting position corresponding to SSB wave beam n; isolation of _mn ∈[0,N-1]Is the constraint condition;

11. The method according to any of claims 1-10, wherein each SSB beam of the plurality of SSB beams of the first cell is associated with at least one traffic beam; the determining the service beam corresponding to the first terminal device includes:

measuring signal quality of a sounding reference signal, SRS, from the first terminal device on a plurality of service beams associated with a plurality of SSB beams of the first cell;

and determining the service beam with the strongest signal quality of the SRS from the service beams as the service beam corresponding to the first terminal equipment.

12. The method of claim 11, wherein the serving the first terminal device on the first frequency domain resource by the service beam corresponding to the first terminal device comprises:

and transmitting a downlink signal to the first terminal equipment or receiving an uplink signal from the first terminal equipment on the first frequency domain resource through a service beam corresponding to the first terminal equipment.

13. The method according to any of claims 1-12, wherein the horizontal direction of a second SSB beam is the same as the horizontal direction of the traffic beam with which the second SSB beam is associated; or,

The difference between the horizontal direction of a second SSB beam and the horizontal direction of a traffic beam associated with the second SSB beam is less than a threshold;

wherein the second SSB beam is any SSB beam of a plurality of SSB beams of the first cell.

14. A communication device, the communication device comprising: a processing module and a receiving-transmitting module;

the processing module is configured to obtain frequency domain resource starting positions corresponding to SSB beams of a plurality of synchronization signal blocks in a first cell, where the frequency domain resource starting positions corresponding to at least two SSB beams are different;

the processing module is further configured to determine a service beam corresponding to the first terminal device, where the service beam is associated with a first SSB beam of the plurality of SSB beams;

the transceiver module is configured to provide a service for the first terminal device on a first frequency domain resource through the service beam, where a starting position of the first frequency domain resource is a frequency domain resource starting position corresponding to the first SSB beam.

15. The communications apparatus of claim 14, wherein the means for determining a frequency domain resource starting location for a plurality of SSB beams of a first cell comprises:

The processing module is configured to determine at least one SSB beam pair, where one beam in the SSB beam pair is an SSB beam of the first cell, and the other SSB beam is an interference beam;

the processing module is further configured to determine a frequency domain starting position corresponding to each SSB beam in the at least one SSB beam pair according to the interference amount, the isolation degree, and the total number of frequency domain starting positions of the at least one SSB beam pair; the amount of interference of an SSB beam pair indicates interference of an interference beam of the SSB beam pair to another SSB beam; the isolation indicates the interval between the frequency domain starting positions of the two SSB beams.

16. The communications apparatus of claim 15, wherein the processing module further configured to determine a frequency domain starting position for each SSB beam in the at least one SSB beam pair based on an amount of interference, isolation, and a total number of frequency domain starting positions for the at least one SSB beam pair comprises:

the processing module is further configured to solve an optimization problem to obtain a frequency domain starting position corresponding to each SSB beam in the at least one SSB beam pair, where the optimization problem is obtained based on a constraint condition and a minimized objective function, and the objective function is determined by an interference amount of the at least one SSB beam pair, the total number of frequency domain starting positions, and a variable; the isolation is a solution of the variable in the optimization problem.

17. The communication apparatus according to claim 15 or 16, wherein the processing module configured to determine at least one SSB beam pair comprises:

the processing module is configured to determine an interference matrix of at least one cell, where the at least one cell includes the first cell, and the interference matrix of the first cell includes interference amounts of SSB beam pairs formed by SSB beams of the first cell and SSB beams of a second cell;

the processing module is further configured to determine the at least one SSB beam pair according to an interference matrix of the at least one cell.

18. The communication apparatus of claim 17, wherein the at least one SSB beam pair comprises SSB beam pairs corresponding to first M largest interference amounts in an interference matrix of the at least one cell, M being a positive integer; or,

19. The communication apparatus according to any of claims 15-18, wherein the amount of interference of the SSB beam pair is determined by the signal quality of the SSB beam of the first cell, the signal quality of the interfering beam, the traffic of the first cell, and the traffic of a second cell, the interfering beam being a beam of the second cell.

20. The communication apparatus of claim 19, wherein the amount of interference of the SSB beam pairs satisfies:

21. The communication apparatus according to claim 19 or 20, wherein the transceiver module is further configured to receive a measurement report MR from the first terminal device;

22. The communication apparatus according to any of claims 19-21, wherein the transceiver module is further configured to receive MR from a second terminal device, the serving cell of the second terminal device being the second cell; the MR of the second terminal device indicates the traffic volume of the second cell.

23. The communication device according to any of claims 15-22, wherein the optimization problem is:

alternatively, the optimization problem is:

Wherein, interface _mn The amount of interference of the SSB beam pair consisting of SSB beam m and SSB beam n; n is the total number of the frequency domain initial positions; isolation of _mn Isolation to Isolation _mn ＝|Pos _m -Pos _n |；Pos _m Index of frequency domain starting position corresponding to SSB wave beam m, pos _n Index of the frequency domain starting position corresponding to SSB wave beam n; isolation of _mn ∈[0,N-1]Is the constraint condition;

24. The communication apparatus according to any of claims 14-23, wherein each SSB beam of the plurality of SSB beams of the first cell is associated with at least one traffic beam; the processing module is configured to determine a service beam corresponding to the first terminal device, and includes:

the processing module is configured to measure signal quality of a sounding reference signal SRS from the first terminal device on a plurality of service beams associated with a plurality of SSB beams of the first cell;

and the processing module is configured to determine, from the plurality of service beams, a service beam with the strongest signal quality of the SRS as a service beam corresponding to the first terminal device.

25. The communications apparatus of claim 24, wherein the transceiver module configured to provide services to the first terminal device on a first frequency domain resource through a service beam corresponding to the first terminal device comprises:

the transceiver module is configured to send a downlink signal to the first terminal device or receive an uplink signal from the first terminal device on the first frequency domain resource through a service beam corresponding to the first terminal device.

26. The communication device of any of claims 14-25, wherein a horizontal direction of a second SSB beam is the same as a horizontal direction of a traffic beam with which the second SSB beam is associated; or,

27. A communication device, the communication device comprising a processor; the processor configured to execute a computer program or instructions to cause the communication device to perform the method of any of claims 1-13.

28. A computer readable storage medium, characterized in that the computer readable storage medium stores computer instructions or a program which, when run on a computer, causes the method according to any one of claims 1-13 to be performed.

29. A computer program product, the computer program product comprising computer instructions; when executed on a computer, some or all of the computer instructions cause the method of any one of claims 1-13 to be performed.