CN115811389A

CN115811389A - Communication method and communication device

Info

Publication number: CN115811389A
Application number: CN202111676012.2A
Authority: CN
Inventors: 黄晖; 金新波; 郑涛
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-09-13
Filing date: 2021-12-31
Publication date: 2023-03-17
Also published as: WO2023036208A1

Abstract

A communication method and a communication apparatus are provided. The method comprises the following steps: the method comprises the steps that first network equipment determines a first time unit occupied by a signal which generates interference on an uplink signal of second network equipment in the downlink signal carried by first downlink resources, when the number of the first time units is smaller than or equal to a preset threshold, a second time unit in second downlink resources is silenced, and when the number of the first time units is larger than the preset threshold, the frequency domain position of the second time unit in the second downlink resources is adjusted according to the frequency domain position of the uplink resource used for carrying the uplink signal, so that the frequency domain position of the resource corresponding to the second time unit in the second downlink resources is not overlapped with the frequency domain position of the uplink resource, and the second downlink resource is a downlink resource located behind the first downlink resource in a time domain, and therefore signal interference between the network equipment is avoided.

Description

Communication method and communication device

The present application claims priority from chinese patent application having application number 202111069603.3, entitled "communication method and communication apparatus", filed by the chinese patent office on 13/9/2021, the entire contents of which are incorporated herein by reference.

Technical Field

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

Background

Currently, in some communication systems, such as a Time Division Duplex (TDD) system, uplink and downlink signals can be carried in different time domain resources for transmission. However, due to the influence of the air waveguide and the like, a transmission delay may occur between signals between two or more network devices at a long distance, which causes the uplink resources and the downlink resources of two or more network devices at a long distance to overlap in a time domain, thereby causing signals to interfere with each other.

For example, when a certain network device is receiving an uplink signal, a downlink signal transmitted by a certain network device at a far distance may be received, which may interfere with the reception of the uplink signal. Therefore, how to avoid signal interference between network devices is an urgent technical problem to be solved.

Disclosure of Invention

The application provides a communication method and a communication device, which aim to avoid signal interference between network devices.

In a first aspect, the present application provides a communication method, which may be executed by a first network device, or may also be executed by a component (e.g., a chip system, etc.) configured in the first network device, or may also be implemented by a logic module or software capable of implementing all or part of the functions of the first network device, which is not limited in this application.

Illustratively, the method comprises: the method comprises the steps that a first network device determines a first time unit occupied by a signal which generates interference on an uplink signal of a second network device in a downlink signal carried by a first downlink resource; when the number of the first time units is less than or equal to the preset threshold, the first network device mutes a second time unit in the second downlink resource, the relative position of the second time unit in the second downlink resource is the same as the relative position of the first time unit in the first downlink resource, and the second downlink resource is a downlink resource located behind the first downlink resource in the time domain.

It should be understood that the downlink signal is a downlink signal sent by the first network device, and may be a signal sent by the first network device to the terminal. The uplink signal is an uplink signal received by the second network device, and may be a signal sent by the terminal to the second network device.

It should also be understood that muting the second time unit in the second downlink resource may specifically mean that the second time unit is not used for carrying downlink signals. That is, the first network device does not map the downlink signal onto the second time unit when transmitting the downlink signal.

Based on the above technical content, the first network device determines the number and relative position of first time units occupied by signals that interfere with the uplink signal received by the second network device in the transmitted downlink signals, and when it is determined that the number of the first time units is less than or equal to the preset threshold, it indicates that the uplink signal received by the second network device is interfered to a lesser extent. Then, the first network device determines a second time unit corresponding to the first downlink resource in the downlink resource (such as the second downlink resource) after the first downlink resource according to the relative position of the first time unit, and mutes the second time unit, thereby avoiding interference to the uplink reception of the second network device, which may be caused by loading the downlink signal on the resource corresponding to the second time unit. That is, the downlink resource of the first network device and the uplink resource of the second network device are scheduled in a staggered manner in the time domain, so that uplink and downlink signals are transmitted in a staggered manner in the time domain, and signal interference between the network devices is avoided.

With reference to the first aspect, in some possible implementations of the first aspect, the determining, by the first network device, the first time unit includes: and the first network equipment determines the first time unit according to the transmission distance of the downlink signal and the position of the third time unit occupied by the interfered uplink signal of the second network equipment.

In a possible implementation manner, when the first network device starts to transmit a downlink signal, the first network device may record the transmission time of the current downlink signal, and when the first indication information is received, it is described that the uplink signal of the second network device is subjected to signal interference at this time, the first network device may record the time of interference generation, and then may determine the transmission time of the downlink signal which generates interference at this time according to two time differences, and multiply the transmission time by the signal transmission speed, so as to obtain the transmission distance.

The first network device can determine that the transmission delay is several time units through the transmission distance, and the first time unit can be conveniently determined by combining the specific position of a third time unit which is interfered by the signal in the uplink signal of the second network device. It should be understood that the number and specific location of the first time unit is determined.

With reference to the first aspect, in some possible implementations of the first aspect, the method further includes: the first network device receives first indication information from the second network device, the first indication information indicating a location of a third time unit.

With reference to the first aspect, in some possible implementation manners of the first aspect, the uplink signal of the second network device is sent periodically, and a time length between the first time unit and the second time unit is an integer multiple of a sending period of the uplink signal of the second network device.

In a second aspect, the present application provides a communication method, which may be executed by a first network device, or may also be executed by a component (e.g., a chip system, etc.) configured in the first network device, or may also be implemented by a logic module or software capable of implementing all or part of the functions of the first network device, which is not limited in this application.

Illustratively, the method comprises: the method comprises the steps that first network equipment determines a first time unit occupied by a signal which generates interference on an uplink signal of second network equipment in a downlink signal carried by a first downlink resource; when the number of the first time units is greater than the preset threshold, the first network device adjusts the frequency domain position of a second time unit in the second downlink resource according to the frequency domain position of the uplink resource for bearing the uplink signal, so that the frequency domain position of the resource corresponding to the second time unit in the second downlink resource is not overlapped with the frequency domain position of the uplink resource, and the second downlink resource is a downlink resource located behind the first downlink resource in the time domain.

Based on the above technical content, the first network device determines the number and relative position of first time units occupied by signals interfering with the uplink signal received by the second network device in the transmitted downlink signals, and when it is determined that the number of the first time units is greater than the preset threshold, it indicates that the degree of interference on the uplink signal received by the second network device is relatively serious. Then, the first network device determines, according to the relative position of the first time unit, a second time unit corresponding to the first downlink resource in the downlink resource (for example, the second downlink resource) after the first downlink resource, and adjusts the frequency domain position of the second time unit according to the frequency domain position of the uplink resource, thereby avoiding interference that may be caused by carrying the downlink signal on the resource corresponding to the second time unit to the uplink reception of the second network device. That is, the downlink resource of the first network device and the uplink resource of the second network device are scheduled in a staggered manner in the frequency domain, so that uplink and downlink signals are transmitted in a staggered manner in the frequency domain, and signal interference between the network devices is avoided.

With reference to the second aspect, in some possible implementations of the second aspect, the determining, by the first network device, the first time unit includes: and the first network equipment determines a first time unit according to the transmission distance of the downlink signal and the position of a third time unit occupied by the interfered uplink signal of the second network equipment.

With reference to the second aspect, in some possible implementations of the second aspect, the method further includes: the first network device receives first indication information from the second network device, the first indication information indicating a location of the third time unit.

With reference to the second aspect, in some possible implementations of the second aspect, the method further includes: the first network equipment receives second indication information from the second network equipment, wherein the second indication information is used for indicating the frequency domain position of the uplink resource.

Through the second indication information, the first network device can easily obtain the frequency domain position of the uplink resource of the second network device, and accordingly can conveniently determine which frequency domain positions of the local downlink resource can be used.

With reference to the second aspect, in some possible implementation manners of the second aspect, the uplink signal of the second network device is sent periodically, and a time length between the first time unit and the second time unit is an integer multiple of a sending period of the uplink signal of the second network device.

In a third aspect, the present application provides a communication method, which may be executed by the second network device, or may also be executed by a component (e.g., a chip system, etc.) configured in the second network device, or may also be implemented by a logic module or software capable of implementing all or part of the functions of the second network device, which is not limited in this application.

Illustratively, the method includes: the second network equipment generates first indication information, the first indication information is used for indicating a third time unit occupied by a signal interfered by a downlink signal in the received uplink signal, and the downlink signal is carried in a first downlink resource of the first network equipment; and sending the first indication information to the first network equipment.

Based on the above technical content, the second network device sends the first indication information to the first network device to indicate the number and the relative position of the third time unit occupied by the signal interfered by the downlink signal in the uplink signal received by the second network device, so that the first network device can conveniently determine the number and the specific position of the first time unit generating the signal interference in the downlink signal, thereby providing basic conditions for the subsequent anti-interference operation of the first network device.

With reference to the third aspect, in some possible implementations of the third aspect, the method further includes: the second network equipment generates second indication information, wherein the second indication information is used for indicating the frequency domain position of uplink resources, and the uplink resources are resources used for bearing uplink signals; the second network device sends the second indication information.

With reference to the third aspect, in some possible implementation manners of the third aspect, the uplink signal of the second network device is sent periodically.

In a fourth aspect, the present application provides a communication method, which may be executed by a network device, or may be executed by a component (e.g., a chip, a system on a chip, or the like) configured in the network device, or may be implemented by a logic module or software capable of implementing all or part of the functions of the network device, which is not limited in this application.

Illustratively, the method comprises: network equipment determines the frequency domain position of uplink resources and the frequency domain position of downlink resources in a time range, wherein the frequency domain position of the downlink resources is not overlapped with the frequency domain position of the uplink resources, the time range comprises a special time slot and an uplink time slot, the downlink resources comprise downlink resources corresponding to the special time slot, and the uplink resources comprise uplink resources corresponding to the special time slot and the uplink time slot; and the network equipment schedules the uplink resource and the downlink resource according to the frequency domain position of the uplink resource and the frequency domain position of the downlink resource.

Based on the technical scheme, the network equipment can stagger and schedule the uplink and downlink resources in the uplink time slot and the special time slot from the frequency domain when scheduling the resources. Therefore, the interference between the network devices can be avoided, and the influence on the uplink and downlink throughput is avoided.

With reference to the fourth aspect, in some possible implementation manners of the fourth aspect, the determining, by the network device, a frequency domain position of the uplink resource and a frequency domain position of the downlink resource within a time range includes: and the network equipment determines the frequency domain position of the uplink resource and the frequency domain position of the downlink resource in the time range according to the frequency domain position of the uplink resource and the frequency domain position of the downlink resource indicated in the high-level signaling.

That is, the network device may schedule the uplink resource and the downlink resource according to the predefined positions of the uplink resource and the downlink resource on the frequency domain, in other words, the ratio of the uplink resource and the downlink resource that can be scheduled by the network device on the frequency domain may be fixed for a long period of time. Therefore, the network equipment can avoid performing calculation to allocate resources when scheduling resources each time, so that the calculation amount of the network equipment can be reduced, and the working pressure of the network equipment is reduced. With reference to the fourth aspect, in some possible implementations of the fourth aspect, the network device is a third network device; the network device determining the frequency domain position of the uplink resource and the frequency domain position of the downlink resource within a time range includes: the third network equipment determines the frequency domain position of the uplink resource in the time range according to the received scheduling request of the uplink resource or the statistical result of the uplink service in the coverage range of the third network equipment; and the third network equipment determines the frequency domain position of the downlink resource in the time range in the residual frequency domain resources based on the frequency domain position of the uplink resource.

Here, the third network device may be a network device whose uplink reception is interfered by downlink transmission of other network devices. In contrast, the fourth network device described below may be a network device that interferes with the uplink reception of the third network device.

The frequency domain positions of the uplink and downlink resources are determined by the third network equipment according to the scheduling request of the uplink resources or the statistical result of the uplink service, so that the frequency domain positions of the uplink and downlink resources can be adaptively adjusted according to requirements, that is, the frequency domain occupation ratios of the uplink and downlink resources can be adaptively adjusted according to requirements, and therefore, the frequency domain positions of the uplink and downlink resources can be more flexibly determined, the resources can be reasonably distributed according to requirements, and the utilization rate of the resources is favorably improved.

Optionally, the method further comprises: and the third network equipment sends third indication information to fourth network equipment, wherein the third indication information is used for indicating the frequency domain position of the uplink resource scheduled by the third network equipment.

Correspondingly, the network device is a fourth network device, and the network device determines the frequency domain position of the uplink resource and the frequency domain position of the downlink resource within a time range, including: the fourth network device receives third indication information from the third network device, where the third indication information is used to indicate a frequency domain position of an uplink resource within a time range scheduled by the third network device; the fourth network device determines the frequency domain position of the uplink resource indicated in the indication information as the frequency domain position of the uplink resource within the time range; the fourth network equipment determines the frequency domain position of the downlink resource in the time range in the residual frequency domain resources

The third network device may notify the frequency domain position of the scheduled uplink resource to the fourth network device, so that the fourth network device schedules the uplink resource and the downlink resource based on the same frequency domain position, thereby enabling each network device including the third network device and the fourth network device to schedule the uplink resource and the downlink resource based on the same frequency domain position, avoiding resource collision and reducing signal interference between the network devices.

In a fifth aspect, the present application provides a communication device comprising means or units for implementing the method of any one of the possible implementations of the first to second aspects and the first to second aspects. It should be understood that the respective modules or units may implement the respective functions by executing the computer program.

In a sixth aspect, the present application provides a communication apparatus, including a processor, configured to execute the communication method described in any one of the possible implementations of the first to second aspects and the first to second aspects.

The apparatus may also include a memory to store instructions and data. The memory is coupled to the processor, and the processor, when executing instructions stored in the memory, may implement the methods described in the aspects above. The apparatus may also include a communication interface for the apparatus to communicate with other devices, which may be, for example, a transceiver, circuit, bus, module, or other type of communication interface.

In a seventh aspect, the present application provides a communication device comprising means or units for implementing the method in any of the possible implementations of the third aspect. It should be understood that the respective modules or units may implement the respective functions by executing the computer program.

In an eighth aspect, the present application provides a communication apparatus, comprising a processor, configured to execute the communication method described in any possible implementation manner of the third aspect.

The apparatus may also include a memory to store instructions and data. The memory is coupled to the processor, which when executing instructions stored in the memory, may implement the methods described in the above aspects. The apparatus may also include a communication interface for the apparatus to communicate with other devices, which may be, for example, a transceiver, circuit, bus, module, or other type of communication interface.

In a ninth aspect, the present application provides a communication device comprising means or units for implementing the method of any one of the possible implementations of the fourth aspect. It should be understood that the respective modules or units may implement the respective functions by executing the computer program.

In a tenth aspect, the present application provides a communication apparatus, comprising a processor configured to execute the communication method described in any one of the possible implementation manners of the fourth aspect.

In an eleventh aspect, the present application provides a chip system, which includes at least one processor, and is configured to support implementation of the functions referred to in any one of the possible implementations of the first to fourth aspects, for example, to receive or process data and/or information referred to in the above methods.

In one possible design, the system-on-chip further includes a memory to hold program instructions and data, the memory being located within the processor or external to the processor.

The chip system may be formed by a chip, and may also include a chip and other discrete devices.

In a twelfth aspect, the present application provides a computer-readable storage medium comprising a computer program which, when run on a computer, causes the computer to implement the method of any one of the possible implementations of the first to fourth aspects and of the first to fourth aspects.

In a thirteenth aspect, the present application provides a computer program product comprising: a computer program (which may also be referred to as code, or instructions), which when executed, causes a computer to perform the method of any one of the possible implementations of the first to fourth aspects and of the first to fourth aspects.

It should be understood that the fifth aspect to the thirteenth aspect of the present application correspond to the technical solutions of the first aspect to the fourth aspect of the present application, and the beneficial effects obtained by the aspects and the corresponding possible implementations are similar and will not be described again.

Drawings

Fig. 1 is a schematic view of a scenario in which a first network device generates signal interference on a second network device according to an embodiment of the present application;

fig. 2 is a schematic diagram of a first network device generating signal interference to a second network device according to an embodiment of the present application;

fig. 3 is a schematic flow chart of a communication method provided in an embodiment of the present application;

fig. 4 is a schematic diagram of a second network device subjected to signal interference according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a cycle of signals provided by an embodiment of the present application;

fig. 6 is a schematic diagram of a network device performing resource adjustment in a frequency domain according to an embodiment of the present application;

fig. 7 to 9 are schematic block diagrams of a communication device provided in an embodiment of the present application;

fig. 10 is a schematic structural diagram of a network device provided in an embodiment of the present application;

fig. 11 is a schematic flow chart diagram of a communication method provided by another embodiment of the present application;

fig. 12 is a schematic diagram of a network device performing resource scheduling in a frequency domain according to another embodiment of the present application;

fig. 13 is a schematic block diagram of a communication device according to another embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

For ease of understanding, the following is first made:

first, network devices (network equipments) mentioned hereinafter include but are not limited to: a base station (base station), a network interface (network interface), a repeater (repeater), a bridge (bridge), a router (router), a switch (switch), or a gateway (gateway). The first network device mentioned hereinafter may be a network device generating signal interference, the signal transmitted by the network device is transmitted over a long distance and is affected by an atmospheric waveguide or the like, and the network device may also be referred to as a remote network device. The second network device mentioned hereinafter may be a network device subjected to signal interference, the signal received by the network device may not be transmitted over a long distance, may not be affected by an atmospheric waveguide or the like, and the network device may also be referred to as a near-end network device. It should be understood that "far" and "near" are relative concepts, and it is within the scope of the present application that the near-end network device and the far-end network device may also be distinguished according to the distance between the network device and the terminal.

It should be understood that any network device may generate signal interference to any other network device when transmitting a downlink signal, and the network device serves as the first network device. When receiving the uplink signal, the network device may also be interfered by signals of any other network device, and at this time, the network device serves as a second network device. That is, for one network device, the network device may serve as both the first network device and the second network device. It should be understood that the number of any other network device may be one or more.

Second, for a network device, it can send downlink signals or receive uplink signals. From a time domain perspective, in order to avoid a network device receiving an uplink signal while transmitting a downlink signal, which may be a situation of signal crosstalk between the downlink signal and the uplink signal, a Guard Period (GP) is usually set in a frame structure to temporally separate the uplink signal from the downlink signal. That is, for one network device, the time for transmitting the downlink signal and the time for receiving the uplink signal are staggered, and crosstalk does not occur.

When divided from the perspective of the time domain, a frame may include: downlink time slots, special time slots and uplink time slots. The network device may send a downlink signal in a downlink time slot and receive an uplink signal in an uplink time slot. The special time slot may further include: downlink pilot time slot (DwPTS), GP, and uplink pilot time slot (UpPTS). The network device may send a downlink signal in the downlink pilot timeslot and receive an uplink signal in the uplink pilot timeslot. That is, the resources corresponding to the downlink time slot and the downlink pilot time slot are downlink resources, the downlink resources are used for carrying downlink signals, the resources corresponding to the uplink time slot and the uplink pilot time slot are uplink resources, and the uplink resources are used for carrying uplink signals. The GP in the special time slot is used to distinguish the uplink signal and the downlink signal in the time domain.

In the time domain, for a downlink timeslot, a special timeslot and an uplink timeslot, the downlink timeslot, the special timeslot and the uplink timeslot may be further divided into 14 symbols (symbols), and a resource corresponding to each symbol is used for carrying a signal. In order to distinguish the symbols, the symbols may be numbered from 0 to 13. That is, the downlink timeslot can be further divided into 14 symbols, and assuming that the duration corresponding to the downlink timeslot is t1, the duration of each symbol in the downlink timeslot is t1/14. Similarly, the uplink timeslot can be further divided into 14 symbols, and assuming that the duration corresponding to the uplink timeslot is t2, the duration of each symbol in the uplink timeslot is t2/14.

For the special time slot, the special time slot may also be divided into 14 symbols, and assuming that the time duration corresponding to the special time slot is t3, the time duration of each symbol in the special time slot is t3/14. Also, different proportions may be given among DwPTS, GP, and UpPTS, and in general, dwPTS: GP: upPTS = 9. That is, the downlink pilot time slot occupies 9 symbols, the GP occupies 3 symbols, and the uplink pilot time slot occupies 2 symbols. It should be understood that the ratio of the special time slot is not limited to the above 9.

It should also be understood that t1, t2 and t3 mentioned above may be the same, different or partially the same, and the application is not limited thereto.

In a practical application scenario, one downlink time slot, one special time slot and one uplink time slot may constitute one complete transmission time slot, and after the complete transmission time slot, the next complete transmission time slot is entered. Namely, a complete transmission time slot consisting of a downlink time slot, a special time slot and an uplink time slot is entered again, and the steps are repeated in a cycle. That is, for any uplink timeslot, one end of the uplink timeslot is in butt joint with the special timeslot in the current complete transmission timeslot, and the other end of the uplink timeslot is in butt joint with the downlink timeslot in the previous complete transmission timeslot. Similarly, for any downlink timeslot, one end of the downlink timeslot is in butt joint with the special timeslot in the current complete transmission timeslot, and the other end of the downlink timeslot is in butt joint with the uplink timeslot in the next complete transmission timeslot.

For ease of understanding, the above description of the frame structure can be understood in conjunction with the reference numerals in fig. 2 and 4 of the drawings.

Third, in the embodiments of the present application, the use of the prefix words "first", "second", "third", and the like is merely for convenience of describing different things belonging to the same name category, and the order or number of things is not limited. For example, the "first time unit" is a time unit occupied by an interfered signal in the uplink signal received by the second network device, the "second time unit" is a time unit occupied by an interfered signal in the downlink signal transmitted by the first network device, and the "third time unit" is a time unit occupied by a signal that will generate interference in other downlink signals after the downlink signal transmitted by the first network device.

Fourth, in the embodiment of the present application, descriptions such as "when 8230", "when 8230", "in 8230", "when 8230, and" if "mean that a device (e.g., a network device) performs corresponding processing in an objective case, and do not limit time, and do not require an action that must be determined when the device (e.g., a network device) is implemented, nor do they mean that there are other limitations.

The technical scheme provided by the application can be applied to occasions such as TDD and the like. TDD is a duplex scheme of a communication system for separating reception and transmission channels in a mobile communication system.

Fig. 1 is a schematic view of a scenario in which a first network device generates signal interference on a second network device, which is suitable for use in the embodiments of the present application. As shown in fig. 1, the scenario 100 may include: a first network device 111, a second network device 112, a terminal 121 and a terminal 122. First network device 111 may send a downlink signal to terminal 121, and second network device 112 may receive an uplink signal sent by terminal 122. For the second network device 112, if the second network device 112 receives the uplink signal sent by the terminal 122 and the first network device is also sending the downlink signal to the terminal 121, the second network device may also receive the downlink signal transmitted by the first network device. At this time, the downlink signal sent by the first network device may generate signal interference on the uplink signal received by the second network device.

It should be understood that the situation that signal interference exists between network devices is not limited to the situation between two network devices, but may also occur between a plurality of network devices, and is within the protection scope of the present application.

Fig. 2 is a schematic diagram of a first network device generating signal interference to a second network device according to an embodiment of the present disclosure. As shown in fig. 2, D denotes a downlink time slot, S denotes a special time slot, U denotes an uplink time slot, GP denotes a guard interval, dwPTS denotes a downlink pilot time slot, and UpPTS denotes an uplink pilot time slot. In the foregoing description, it has been pointed out that S includes: dwPTS, GP and UpPTS. And, the first network device and the second network device may respectively send downlink signals in downlink resources corresponding to the D and DwPTS, and the first network device and the second network device may respectively receive uplink signals in uplink resources corresponding to the U and UpPTS.

As shown in fig. 2, when a first network device transmits a signal, when a downlink signal of the first network device is transmitted over a long distance of tens of kilometers or hundreds of kilometers, and a transmission time is longer than a guard interval, due to a transmission delay, the downlink signal of the first network device may fall into an uplink receiving window of a second network device, and at this time, the downlink signal of the first network device may generate signal interference with an uplink signal in the uplink receiving window of the second network device. It should be noted that the uplink receiving window corresponds to the uplink resources corresponding to U and UpPTS, and is used for receiving an uplink signal. Moreover, the downlink signal of the first network device may fall into any position within the uplink receiving window of the second network device, that is, the downlink signal of the first network device may interfere with the uplink signal at any position within the uplink receiving window.

As described above, in current signal transmission, when a certain network device receives an uplink signal, a downlink signal transmitted by a certain network device from a remote location may be received, which may cause interference to the reception of the uplink signal.

In view of this, the present application provides a communication method, where a first network device considers that a downlink resource and an uplink resource are scheduled in a staggered manner from a time domain or a frequency domain according to a relationship between a number of first time units occupied by a signal that interferes with an uplink signal received by a second network device in a downlink signal and a preset threshold. For example, when the number of the first time units is less than or equal to a preset threshold, the downlink resources and the uplink resources are scheduled in a staggered manner from the time domain, and when the number of the first time units is greater than the preset threshold, the downlink resources and the uplink resources are scheduled in a staggered manner from the frequency domain. Therefore, the interference between the network devices can be avoided, and the influence on the uplink and downlink throughput can be avoided.

The following describes a communication method provided in an embodiment of the present application in detail with reference to the accompanying drawings.

Fig. 3 is a schematic flow chart diagram of a communication method 300 suitable for use in embodiments of the present application. Fig. 3 shows a specific flow of the method from the point of view of the interaction of the first network device and the second network device. Wherein the first network device may correspond to network device 111 in system 100 of fig. 1 and the second network device may correspond to network device 112 in system 100 of fig. 1.

The method 300 includes steps 310 through 350. The various steps in the method 300 shown in fig. 3 are described in detail below. Wherein steps 310, 320 describe the actions performed by the second network device and steps 320 to 350 describe the actions performed by the first network device. It should be noted that the steps shown in fig. 3 are only examples, and the first network device may selectively perform one of step 340 or step 350, but is not limited to perform two steps.

It should be understood that the first network device and the second network device are only one example of an execution subject, and each step in the above method may also be executed by a component (such as a circuit, a chip system, etc.) disposed in the first network device and the second network device, respectively, or may also be implemented by a logic module or software capable of implementing all or part of the functions of the first network device and the second network device. The embodiments of the present application do not limit this.

In step 310, the second network device generates first indication information.

The first indication information is used for indicating a third time unit occupied by a signal interfered by a downlink signal in an uplink signal received by the second network device, and the downlink signal is carried in a first downlink resource of the first network device. The first indication information is used to indicate a relative position of the third time unit. As described above, the uplink signal may be a signal transmitted by the terminal to the second network device, and the downlink signal may be a signal transmitted by the first network device to the terminal. It should be understood that the terminal sending the uplink signal to the second network device and the terminal to which the first network device sends the downlink signal may be different terminals.

In the present application, a "time unit" may be a "symbol" as indicated in the foregoing description, and the number of time units may be one or more symbols. The third time unit is the symbol occupied by the uplink signal of the portion interfered by the downlink signal of the first network device in the uplink signal received by the second network device. In other words, the third time unit is a symbol in the uplink resource. If the interfered uplink signal only occupies one symbol, the number of the third time unit is one; if the interfered uplink signal occupies a plurality of symbols, the number of the third time units is multiple.

The first downlink resource is a downlink resource corresponding to the downlink timeslot D and the downlink pilot DwPTS timeslot in the current complete transmission timeslot of the first network device, and the downlink resource is used for bearing a downlink signal sent by the first network device at this time. It should be noted that the "complete transmission time slot of this time" refers to a corresponding complete transmission time slot when a downlink signal sent by the first network device generates signal interference on an uplink signal received by the second network device. That is, in which complete transmission timeslot the downlink signal generating signal interference to the second network device belongs to, the downlink resource corresponding to the downlink timeslot D and the downlink pilot timeslot DwPTS in this complete transmission timeslot is taken as the first downlink resource. It should be noted that, for the explanation of the "complete transmission slot", reference may be made to the aforementioned "second" part, and details are not repeated here.

When receiving the uplink signal, the second network device may be interfered by the signal of the downlink signal sent by the first network device, and the second network device may determine which specific symbols in the uplink resource are interfered by the downlink signal, and determine the symbols occupied by the interfered signals as a third time unit, where the specific number of the third time unit is determined by the number of the symbols occupied by the interfered signals. And, the second network device may generate the first indication information, which may indicate a specific location of the interfered symbol or symbols in the uplink signal. The following is illustrated in connection with fig. 4:

fig. 4 is a schematic diagram of a situation where a second network device is interfered by a signal according to an embodiment of the present application. Wherein, (a) in fig. 4 shows a schematic diagram that a starting portion of an uplink signal of the second network device is interfered by a signal, and (b) in fig. 4 shows a schematic diagram that the second time unit is muted. As shown in fig. 4 (a), the uplink pilot timeslot UpPTS of the second network device and the uplink resource corresponding to the uplink timeslot U are used to carry an uplink signal. As can be seen from the figure, in the uplink signal received by the second network device, the symbol 12 and the symbol 13 corresponding to the UpPTS, and the symbol 0 and the symbol 1 corresponding to the U are interfered by the downlink signal of the first network device. At this time, the second network device may generate first indication information for indicating that, in the uplink signal of the second network device, the uplink signals corresponding to the symbol 12 and the symbol 13 in the UpPTS, and the symbol 0 and the symbol 1 in the U are interfered by the downlink signal of the first network device.

It should be noted that, since the first indication information indicates which symbols are interfered, the number of interfered symbols can be determined. And, because the indicated symbols all have corresponding numbers, the relative position of the interfered symbol in the uplink signal can be determined according to the numbers.

In step 320, the second network device sends first indication information to the first network device. Accordingly, the first network device receives the first indication information from the second network device.

After the second network device generates the first indication information, the second network device may send the first indication information to the first network device, so that the first network device may perform corresponding processing according to the first indication information, so as to avoid signal interference between the network devices.

In step 330, the first network device determines a first time unit occupied by a signal that interferes with an uplink signal of the second network device in the downlink signal carried by the first downlink resource.

Specifically, the first network device may determine the number of first time units occupied by signals that interfere with the uplink signal in the downlink signals carried by the first downlink resource and the relative position in the first downlink resource. As mentioned above, the uplink signal is a signal transmitted by the terminal to the second network device.

It has been pointed out above that, to which downlink resource a downlink signal causing signal interference to the second network device by the first network device corresponds, this downlink resource is taken as the first downlink resource. In the first downlink resource, a symbol corresponding to a downlink signal that interferes with an uplink signal of the second network device is a first time unit. Obviously, the first time unit corresponds to the third time unit. As can also be seen in fig. 4, the first time unit and the third time unit correspond.

When the first network device determines the first time unit, the first network device may determine the first time unit by:

and the first network equipment determines the first time unit according to the transmission distance of the downlink signal and the position of the third time unit occupied by the interfered uplink signal of the second network equipment.

Specifically, the first network device determines the number of the first time units and the relative position in the first downlink resource according to the transmission distance of the downlink signal and the relative position in the uplink resource of the third time unit occupied by the interfered signal in the uplink signal received by the second network device.

When a network device transmits a signal, the transmission distance of the corresponding signal is 10.7km for one symbol, or one time unit. The first network device determines that the transmission delay of the downlink signal is several symbols by dividing the transmission distance by 10.7 according to the transmission distance of the downlink signal, and determines the number and relative position of the symbols generating interference in the downlink resource in the downlink signal sent by the first network device by combining the relative position of the interfered symbols in the uplink signal received by the second network device in the uplink resource indicated by the first indication information.

It should be noted that, when the first network device starts to transmit the downlink signal, the transmission time t4 of the current downlink signal may be recorded, and when the first indication information is received, the uplink signal of the second network device is subjected to signal interference at this time, and the time t5 of generating interference may be recorded, so that the first network device may determine the transmission time t = t5-t4 of the downlink signal of which interference is generated at this time, and may further determine the transmission distance S = v × t, and v is the signal transmission speed.

The following is illustrated in connection with fig. 4:

as shown in fig. 4 (a), assuming that the first network device determines that the transmission distance is 74.9km in the above manner, it may determine that the transmission delay is 74.9 ÷ 10.7=7 symbols, and in combination with that the first indication information received by the first network device indicates that, in the uplink signal of the second network device, the uplink signals corresponding to the symbol 12 and the symbol 13 in the UpPTS and the symbol 0 and the symbol 1 in U are interfered, it may accordingly be determined that, in the downlink signal transmitted this time, the downlink signals corresponding to the symbol 5, the symbol 6, the symbol 7, and the symbol 8 in the DwPTS generate interference. That is, it can be determined that the number of the first time units is 4, and the specific positions of these first time units in the first downlink resource are symbol 5, symbol 6, symbol 7, and symbol 8 in DwPTS.

After determining the number of the first time units occupied by the interference-generating signal, the first network device may determine to perform step 340 or perform step 350 by determining a size relationship between the number of the first time units and a preset threshold. When the number of first time units is less than or equal to the predetermined threshold, step 340 may be performed to achieve interference rejection from the adjustment in the time domain. When the number of first time units is greater than the predetermined threshold, step 350 may be performed to achieve interference rejection from the adjustment in the frequency domain. The preset threshold is a critical value for selecting time domain adjustment or frequency domain adjustment by the first network device, and the critical value may be set to be 7 interfered symbols in the uplink signal of the second network device. It should be understood that other values of the preset threshold may be set by those skilled in the art according to actual requirements.

It should also be understood that the following steps 340 and 350 of determining the number of the first time units are optional steps, and the first network device may also not determine the number of the first time units, perform the action of muting the second time units in step 340, or perform the action of adjusting the frequency domain position of the second time units in the second downlink resource in step 350. In other words, the first network device may not choose to perform step 340 or step 350 depending on the number of first time units. For example, the protocol may predefine muting the second time unit or adjusting a frequency domain position of the second time unit when the downlink signal of the first network device interferes with the uplink signal of the second network device.

In step 340, when the number of the first time units is less than or equal to the preset threshold, the first network device mutes the second time units in the second downlink resource.

The relative position of the second time unit in the second downlink resource is the same as the relative position of the first time unit in the first downlink resource, and the second downlink resource is a downlink resource located after the first downlink resource in the time domain.

As described above, in which complete transmission timeslot the downlink signal generating signal interference to the second network device belongs, the downlink resource corresponding to the downlink time slot D and the downlink pilot time slot DwPTS in the complete transmission timeslot is used as the first downlink resource. And after the time slot of the complete transmission, there is a next complete transmission time slot after one another, and the downlink resources corresponding to the downlink time slot D and the downlink pilot time slot DwPTS in the complete transmission time slot after the time slot of the complete transmission are used as second downlink resources.

According to the foregoing analysis, the first time unit is a symbol corresponding to a downlink signal that interferes with an uplink signal of the second network device in the first downlink resource, and the second time unit is a symbol corresponding to a downlink signal that interferes with an uplink signal of the second network device in the second downlink resource after the first downlink resource. The relative position of the first time unit in the second downlink resource is the same as the relative position of the first time unit in the first downlink resource, that is, the symbol number corresponding to the second time unit in the second downlink resource is the same as the symbol number corresponding to the first time unit in the first downlink resource. It should be understood that when the number of the first time units is multiple, the symbol numbers corresponding to the first time units may be continuous, and then the symbol numbers corresponding to the second time units are also correspondingly continuous, and the symbol numbers corresponding to the first time units may also be discontinuous, and then the symbol numbers corresponding to the second time units are also correspondingly discontinuous.

In order to facilitate that the same position signal in the uplink signal received by the second network device is not interfered again in the following process, the first network device mutes the second time unit, and the muting represents that the symbol does not carry a signal, that is, the signal is not mapped on the symbol. That is, the first network device may be set in advance, and the second time unit is not allowed to carry the downlink signal, thereby avoiding the secondary interference to the second network device.

The following is illustrated in connection with fig. 4:

as shown in fig. 4 (b), according to the foregoing analysis of fig. 4 (a), the initial part of the uplink signal received by the second network device is subjected to signal interference, that is, the uplink signal corresponding to the symbol 12 and the symbol 13 in the uplink pilot time slot UpPTS, and the uplink signal corresponding to the symbol 0 and the symbol 1 in the uplink time slot U are subjected to signal interference. Accordingly, in the downlink signal transmitted by the first network device, the downlink signals corresponding to symbol 5, symbol 6, symbol 7, and symbol 8 in the downlink pilot time slot DwPTS generate interference. When the first network device determines that the number of the first time units is 4 symbols and is smaller than the preset threshold, for example, 7 symbols, the second time unit in the second downlink resource after the first downlink resource, that is, the second time unit in the second downlink resource, that is, the symbol 5, the symbol 6, the symbol 7, and the symbol 8, may be muted in the manner shown in (b) in fig. 4.

In order to avoid the situation that the silent operation is accidentally failed, and when the downlink signal is subsequently sent, the second network device is subjected to signal interference again, the first network device may further determine a sending end position from symbols corresponding to other time units in the second downlink resource except the second time unit, and the sending end position may be adaptively selected by the first network device. As shown in fig. 4 (b), after muting the second time unit, i.e., symbol 5, symbol 6, symbol 7, and symbol 8, the first network device may select one symbol from symbol 0 to symbol 13 in the downlink slot D or from symbol 0 to symbol 4 in the DwPTS in the special slot S as the transmission end position. For example, the first network device selects symbol 2 in DwPTS as the transmission end position, and then the first network device will transmit downlink signals only at symbol 0 to symbol 13 in downlink timeslot D and symbol 0 to symbol 2 in downlink pilot timeslot DwPTS when transmitting downlink signals subsequently.

In a possible implementation manner, the uplink signal of the second network device is transmitted periodically, and the time length between the first time unit and the second time unit is an integer multiple of the transmission period of the uplink signal of the second network device.

Specifically, in each complete transmission timeslot, the uplink resources corresponding to the UpPTS and the U both carry uplink signals, that is, at the UpPTS and the U in each complete transmission timeslot, the terminal both sends the uplink signals to the second network device. Accordingly, the time length between the first time unit and the second time unit may be any integer multiple of one time, two times, or three times of the transmission period of the uplink signal. It should be understood that if the number of the first time units is plural, the number of the second time units is also plural, and the time length is the time length between two time units with the same relative position. For example, the time length is the length of time between symbol 5 in the first time unit and symbol 5 in the second time unit.

Fig. 5 is a schematic diagram of an uplink signal transmitted periodically according to an embodiment of the present application. As shown in fig. 5, each T corresponds to a complete transmission slot, and the terminal may send an uplink signal to the second network device in a period of T. For the downlink signal 1 of the first network device, the time length between the first time unit and the second time unit is also T. At this time, for the second network device, at every interval T, the uplink signal may be interfered by the downlink signal, that is, a third time unit interfered by the signal exists in each T, and the first network device may silence a second time unit corresponding to each period T after the first time unit.

For the downlink signal 2 of the first network device, the time length between the first time unit and the second time unit is 2T. At this time, for the second network device, the uplink signal is interfered only at a time interval of 2T, that is, the third time unit interfered by the signal only occurs at a time interval of 2T, and the first network device may determine the second time unit every 2T, or determine the second time unit with 2T as a period, and silence the second time unit. As can be seen from the relationship between the downlink signal 1 and the downlink signal 2 and the uplink signal shown in fig. 5, the time length between the first time unit and the second time unit may be an integer multiple of the transmission period of the uplink signal.

One possible design is that the first downlink resource and the second downlink resource are periodically distributed downlink resources, each period includes a downlink timeslot, a special timeslot, and an uplink timeslot, and the downlink resource in each period includes: the resource located in the downlink time slot and the resource located in the downlink pilot time slot in the special time slot. The length of the period is also dependent on the length of time between the first time unit and the second time unit.

When the number of symbols generating interference in the downlink signal sent by the first network device is greater than a preset threshold, for example, when the number of the first time units is 9 symbols and is greater than the preset threshold by 7 symbols, it is indicated that more than half of the uplink signals received by the second network device are interfered, and if the first network device still uses a silent mode to avoid interference between the network devices, the downlink throughput of the first network device will be greatly affected. Therefore, step 350 may be executed when the interference level of the uplink signal received by the second network device is severe.

In step 350, when the number of the first time units is greater than the preset threshold, the first network device adjusts the frequency domain position of the second time unit in the second downlink resource according to the frequency domain position of the uplink resource for carrying the uplink signal, so that the frequency domain position of the resource corresponding to the second time unit in the second downlink resource is not overlapped with the frequency domain position of the uplink resource, where the second downlink resource is a downlink resource located after the first downlink resource in the time domain.

In this application, the first network device may obtain a frequency domain position of an uplink resource of the second network device, where the frequency domain position may specifically be a frequency point occupied in a frequency domain, and the frequency point refers to a specific absolute frequency value, and the first network device may also obtain a Resource Block (RB) resource supported by a system bandwidth, so that the schedulable frequency domain position of the downlink resource may be determined. For example, the frequency domain positions of the uplink resource scheduled by the second network device are frequency point 1, frequency point 2, frequency point 3, and frequency point 5, the frequency points supported by the system bandwidth are frequency points 1 to 8, and the first network device determines that the schedulable frequency domain positions of the downlink resource are frequency point 4, frequency point 6, frequency point 7, and frequency point 8. Then, the first network device adjusts the frequency domain position of the second downlink resource after the first downlink resource to frequency point 4, frequency point 6, frequency point 7, and frequency point 8.

Fig. 6 is a schematic diagram of resource adjustment performed in a frequency domain by a network device according to an embodiment of the present application. Fig. 6 (a) is a schematic diagram of the first network device adjusting the frequency domain position of the downlink resource corresponding to the second time unit, and fig. 6 (b) is a schematic diagram of the frequency domain position of the uplink resource scheduled by the second network device. As can be seen from fig. 6, in the time domain, the first network device adjusts the frequency domain position of the second time unit in the second downlink resource located after the first downlink resource, and in the frequency domain, the frequency domain position of the downlink resource corresponding to the second time unit adjusted by the first network device is a frequency domain position where the uplink resource of the second network device is not scheduled, so that signal interference between network devices is avoided in advance and effectively.

Optionally, the first network device may obtain the frequency domain location of the uplink resource of the second network device by:

the second network equipment generates second indication information, wherein the second indication information is used for indicating the frequency domain position of uplink resources, and the uplink resources are resources used for bearing uplink signals; the second network device sends the second indication information.

If the second network device finds that the number of the symbols subjected to signal interference in the received uplink signal is greater than the preset threshold, the second network device sends the frequency domain positions occupied by the uplink resources corresponding to the symbols in the frequency domain, such as the frequency values, to the first network device, so that the first network device can know which frequency points the second network device occupies, and the frequency domain positions of the downlink resources corresponding to the second time unit can be better determined.

Based on the above scheme, the first network device considers that the downlink resource and the uplink resource are scheduled in a staggered manner from the time domain or the frequency domain according to the relationship between the number of the first time units occupied by the signals which interfere with the uplink signal received by the second network device in the downlink signals and the preset threshold. For example, when the number of the first time units is less than or equal to the preset threshold, the downlink resources and the uplink resources are scheduled in a staggered manner from the time domain, and when the number of the first time units is greater than the preset threshold, the downlink resources and the uplink resources are scheduled in a staggered manner from the frequency domain. Therefore, the interference between the network devices can be avoided, and the influence on the uplink and downlink throughput can be avoided.

In the above illustrated embodiment, the first network device determines whether to stagger scheduling of the uplink resource and the downlink resource from the time domain or the frequency domain according to a size relationship between the number of the first time units occupied by the signal that interferes with the uplink signal received by the second network device in the downlink signal and a preset threshold. That is, the first network device determines how to schedule the resource according to the interference experienced by each cycle. That is, the first network device staggers scheduling resources after having been subject to interference.

The application also provides a method, which makes the probability that the network equipment which is receiving uplink is interfered by downlink transmission of other network equipment as little as possible by staggeredly scheduling uplink and downlink resources from the frequency domain. A communication method according to another embodiment of the present application will be described in detail below with reference to the accompanying drawings. For convenience of description, the network device that is performing uplink reception is hereinafter referred to as a third network device that may be interfered by downlink transmission from a fourth network device. For example, the third network device may correspond to the second network device 112 shown in fig. 1, but is not used to perform the steps involved in the second network device in the method 300. Correspondingly, the fourth network device may correspond to the first network device 111 shown in fig. 1, but is not used for performing the steps involved in the first network device in the method 300.

Fig. 11 is a schematic flow chart diagram of a communication method 1100 provided in another embodiment of the present application. In the method embodiment shown in fig. 11, the network device is used as the execution subject, and the steps in the method 1100 are described.

It should be understood that the network device is only one example of the execution subject, and each step in the above method may also be executed by a component (such as a circuit, a chip system, etc.) disposed in the network device, or may also be implemented by a logic module or software capable of implementing all or part of the functions of the network device. The embodiments of the present application do not limit this.

As mentioned above, when dividing from the time domain perspective, a frame may include: downlink time slots, special time slots and uplink time slots. The network device may transmit a downlink signal in a downlink pilot time slot (DwPTS) in the downlink time slot and the special time slot, and may receive an uplink signal in an uplink pilot time slot (UpPTS) in the uplink time slot and the special time slot. It should be noted that, in this embodiment, the network device mainly designs resources in the uplink timeslot and the special timeslot, but does not relate to resources in the downlink timeslot, so the uplink resources described below may include resources corresponding to the uplink timeslot and the uplink pilot timeslot, that is, uplink resources corresponding to the uplink timeslot and the special timeslot; the downlink resource may include a resource corresponding to a downlink pilot timeslot, that is, a downlink resource corresponding to a special timeslot.

As shown in fig. 11, the method 1100 includes

steps

1110 and 1120. The various steps in the method 1100 shown in fig. 11 are described in detail below.

In step 1110, the network device determines a frequency domain location of the uplink resource and a frequency domain location of the downlink resource within a time range.

Here, the time range may include a special time slot and an uplink time slot, that is, time domain resources excluding a downlink time slot within one frame. Since the downlink time slots, the special time slots and the uplink time slots are periodically distributed by taking one frame as granularity, the time range is also periodically distributed by taking the frame as granularity. The uplink resource in a time range may refer to a resource corresponding to an uplink timeslot and an uplink pilot timeslot in a frame, or an uplink resource corresponding to an uplink timeslot and a special timeslot, and the downlink resource in a time range may refer to a resource corresponding to a downlink pilot timeslot in a frame, or a downlink resource corresponding to a special timeslot.

In this embodiment, the frequency domain position of the uplink resource and the frequency domain position of the downlink resource within the same time range determined by the network device are not overlapped. That is, the uplink resources and the downlink resources in the time range are arranged in a staggered manner in the frequency domain and do not overlap with each other.

As described above, the network device may be the third network device or the fourth network device. That is, the third network device and the fourth network device may both determine the frequency domain position of the uplink resource and the frequency domain position of the downlink resource within a time range according to the above rule.

In step 1120, the network device schedules the uplink resource and the downlink resource according to the frequency domain position of the uplink resource and the frequency domain position of the downlink resource.

In this embodiment, the time domain position of the uplink resource and the time domain position of the downlink resource may be predetermined, that is, the uplink resource corresponds to the uplink time slot and the uplink pilot time slot in the time domain, and the downlink resource corresponds to the downlink pilot time slot in the time domain. Therefore, after determining the frequency domain position of the uplink resource and the frequency domain position of the downlink resource, the network device can determine the time-frequency position of the uplink resource and the time-frequency position of the downlink resource, and then perform resource scheduling according to the time-frequency positions of the uplink resource and the downlink resource.

Fig. 12 shows an example of uplink resources and downlink resources in a time range. The uplink resources and the downlink resources shown in fig. 12 are determined based on the method provided above, i.e., the uplink resources corresponding to the uplink time slot and the uplink pilot time slot and the downlink resources corresponding to the downlink pilot time slot do not overlap in the frequency domain. That is, the uplink and downlink resources are distributed in a staggered manner in the time-frequency domain. Therefore, even if the network device (for example, the third network device) is receiving the uplink signal and another network device (for example, the fourth network device) is performing downlink transmission, since the uplink resource and the downlink resource do not overlap in the frequency domain, the third network device is not interfered by the downlink signal of the fourth network device.

Since the network device may be a third network device or a fourth network device. That is, any network device may determine the frequency domain position of the uplink resource and the frequency domain position of the downlink resource within a time range according to the above rule. In this way, when any network device receives the uplink signal, other network devices perform downlink transmission, and the uplink and downlink resources are staggered in the frequency domain, so that the downlink transmission does not interfere with the reception of the uplink signal.

In one possible design, the frequency domain location of the uplink resource and the frequency domain location of the downlink resource may be indicated by higher layer signaling. Step 1110 may specifically include: and the network equipment determines the frequency domain position of the uplink resource and the frequency domain position of the downlink resource within a time range according to the frequency domain position of the uplink resource and the frequency domain position of the downlink resource indicated in the high-level signaling.

That is, the frequency domain position of the uplink resource and the frequency domain position of the downlink resource within a time range may be semi-statically or statically configured. For example, the ratio of the uplink resource and the downlink resource in the frequency domain may be configured in advance, for example, the frequency domain range of the uplink resource occupies 20% of the frequency domain resource, the frequency domain range of the downlink resource occupies 80% of the frequency domain resource, and the start position and/or the end position of the frequency domain resource occupied by the uplink resource, or the start position and/or the end position of the frequency domain resource occupied by the downlink resource may be further configured. There are many possible indication manners for indicating the frequency domain positions of the uplink and downlink resources, and for the sake of brevity, this is not listed here.

It should be understood that the frequency domain resource herein may refer to a frequency band resource that the network device may schedule. For example, the schedulable bandwidth of the network device is 100 megabits, and if the pre-configuration is made such that the percentage of the uplink resource in the frequency domain is 20 megabits and the percentage of the downlink resource in the frequency domain is 80 megabits, it can be determined that the uplink resource station is 20 megabits and the downlink resource station is 80 megabits. It should also be understood that the present application is not limited to the occupation ratio of the uplink and downlink resources in the frequency domain, and the occupation ratio is merely illustrated for convenience of understanding.

It should also be understood that the present application is also not limited to the above-mentioned high layer signaling.

In the design, the ratio of the uplink resources and the downlink resources which can be scheduled by the network equipment on the frequency domain can be fixed and unchanged for a long period of time, so that for the network equipment, calculation can be avoided during each resource scheduling to allocate resources, the calculation amount of the network equipment can be reduced, and the working pressure of the network equipment can be reduced.

In another possible design, the frequency domain position of the uplink resource and the frequency domain position of the downlink resource are determined by a certain network device, for example, according to a scheduling request of the uplink resource or a statistical result of the uplink service, and the determined frequency domain position of the uplink resource and the determined frequency domain position of the downlink resource are notified to other network devices. For example, the frequency domain position of the uplink resource and the frequency domain position of the downlink resource may be determined by a network device (e.g., denoted as a third network device) that may suffer interference from uplink reception, and after determining the frequency domain position of the uplink resource and the frequency domain position of the downlink resource, the third network device may notify other network devices (e.g., denoted as a fourth network device) of the frequency domain position of the uplink resource and the frequency domain position of the downlink resource.

For the third network device, step 1110 may specifically include: the third network equipment determines the frequency domain position of the uplink resource within a time range according to the received scheduling request of the uplink resource or the uplink service statistical result within the coverage range of the third network equipment; and the third network equipment determines the frequency domain position of the downlink resource in the time range in the residual frequency domain resources based on the frequency domain position of the uplink resource.

It can be understood that, when the third network device schedules the uplink resource, the third network device should follow the arrangement rule of the downlink timeslot, the special timeslot, and the uplink timeslot in the time domain, as described above, the downlink timeslot, the special timeslot, and the uplink timeslot are arranged periodically, that is, the time domain position of the uplink resource may be predetermined. Therefore, after determining the frequency domain position of the uplink resource, the third network device may determine the time-frequency position of the uplink resource by combining the time domain position of the uplink resource. Similarly, the time domain position of the downlink resource may also be predetermined, and after determining the frequency domain position of the downlink resource, the third network device may determine the time-frequency position of the downlink resource by combining the time domain position of the downlink resource.

One possible implementation manner for the third network device to determine the frequency domain position of the uplink resource is to determine the frequency domain position of the uplink resource according to the received scheduling request of the uplink resource. Here, the scheduling request for the uplink resource may refer to a request for requesting scheduling of the uplink resource, and may be a request for requesting scheduling of a physical uplink shared channel (PUCCH) or a Physical Random Access Channel (PRACH), for example. The present application includes, but is not limited to, all the requests for scheduling uplink resources shall fall within the scope of the present application.

The third network device may determine, according to the received scheduling request of the uplink resource, the size of the resource that needs to be scheduled for the terminal device in its coverage area, and may further determine, according to the time domain range corresponding to the uplink resource, the size of the resource that needs to be occupied in the frequency domain, that is, may determine the frequency domain position of the uplink resource.

Another possible implementation manner for the third network device to determine the frequency domain position of the uplink resource is to determine the frequency domain position of the uplink resource according to the statistical result of the uplink service within the coverage area of the third network device. The uplink service statistical result may be obtained based on uplink service statistics before the resource scheduling of the third network device this time, that is, according to historical uplink service statistics. The historical uplink traffic based on the uplink traffic statistic result may be uplink traffic in a preset historical period, such as specifying the length of the historical period, or specifying the time start of the historical period, etc. This is not a limitation of the present application.

The third network device may pre-estimate the size of the uplink resource that may be needed for the scheduling according to the size of the resource used by the historical uplink service, and may further determine the size of the resource that needs to be occupied in the frequency domain according to the time domain range corresponding to the uplink resource, that is, may determine the frequency domain position of the uplink resource.

The specific implementation manner of determining the frequency domain location of the uplink resource by the third network device is only an example, and should not limit the present application in any way. For example, the third network device may also use a prediction model to predict the size of the uplink resource that needs to be scheduled, so as to determine the frequency domain position of the uplink resource. This application includes but is not limited to.

After determining the frequency domain location of the uplink resource, the third network device may send third indication information to the fourth network device to indicate the frequency domain location of the uplink resource.

Optionally, the method further comprises: and the third network equipment sends third indication information to the fourth network equipment, wherein the third indication information is used for indicating the frequency domain position of the uplink resource scheduled by the third network equipment. Accordingly, the fourth network device receives the third indication information.

If the network device is a fourth network device, step 1110 specifically includes: the fourth network device receives third indication information from the third network device, where the third indication information is used to indicate a frequency domain position of an uplink resource scheduled by the third network device; the fourth network device determines the frequency domain position of the uplink resource indicated in the third indication information as the frequency domain position of the uplink resource within the time range; and the fourth network equipment determines the frequency domain position of the downlink resource in the time range in the residual frequency domain resources.

The third indication information may specifically include at least two of the following information of the frequency domain position of the uplink resource scheduled by the third network device: a start position, an end position and a frequency domain range, the start position and the end position may be frequency point information, for example. The present application does not limit the specific content of the third indication information.

That is to say, when the fourth network device performs resource scheduling, the frequency domain position of the uplink resource scheduled by the third network device may be used as the frequency domain position of the uplink resource scheduled by the fourth network device, and the frequency domain position of the downlink resource is determined in the remaining frequency domain resources. In this way, the frequency domain position of the uplink resource determined by the fourth network device is the same as the frequency domain position of the uplink resource determined by the third network device, and the frequency domain position of the downlink resource determined by the fourth network device is also not overlapped with the frequency domain position of the uplink resource.

It can be understood that, when the fourth network device schedules the resource, the fourth network device should also follow the arrangement rule of the downlink timeslot, the special timeslot, and the uplink timeslot in the time domain, that is, the time domain position of the uplink resource and the time domain position of the downlink resource

Based on the above implementation manner, the fourth network device may also determine the frequency domain position of the uplink resource and the frequency domain position of the downlink resource, and since the time domain position of the uplink resource and the time domain position of the downlink resource may also be predetermined, the fourth network device may schedule the uplink resource according to the time domain position of the uplink resource and schedule the downlink resource according to the time-frequency position of the downlink resource.

It should be understood that the frequency domain position of the uplink resource scheduled by the third network device is indicated by the third indication information, which is only one possible design, and in another possible design, the frequency domain position of the downlink resource scheduled by the third network device may also be indicated by the third indication information, in which case, the fourth network device may also take the frequency domain position of the downlink resource indicated in the third indication information as the frequency domain position of the downlink resource scheduled by the fourth network device, and determine the frequency domain position of the uplink resource in the remaining frequency domain resources.

In this design, since the network device may perform uplink resource scheduling according to the scheduling request of the uplink resource or the uplink service statistical result, the frequency domain positions of the uplink and downlink resources may be adjusted in different time ranges for the scheduled resource, for example, the frequency domain range of the uplink resource may be slightly larger under the condition of a larger demand for the uplink resource; in the case of a small amount of uplink resource demand, the frequency domain range of the uplink resource may be slightly smaller, so that the frequency domain position of the uplink resource may be adaptively adjusted according to the demand, and the frequency domain position of the corresponding downlink resource may also be adaptively adjusted. Therefore, compared with the former design, the determination of the frequency domain positions of the uplink and downlink resources is more flexible, and the resources can be reasonably distributed according to the requirements, which is beneficial to improving the utilization rate of the resources.

Based on the technical scheme, the network equipment can stagger and schedule the uplink and downlink resources in the uplink time slot and the special time slot from the frequency domain when the resources are scheduled, so that the interference between the network equipment can be avoided, and the influence on the uplink and downlink throughput is avoided.

The method provided by the embodiment of the present application is described in detail above with reference to fig. 3 to 6, 11 and 12. Hereinafter, the apparatus according to the embodiment of the present application will be described in detail with reference to fig. 7 to 10 and 13.

Fig. 7 is a schematic block diagram of a communication device provided in an embodiment of the present application. The communication apparatus 700 may correspond to the first network device in the method embodiment, for example, the communication apparatus 700 may be the first network device, may also be a component (e.g., a circuit, a chip, a system on chip, etc.) in the first network device, or may also be a logic module or software that can implement all or part of the functions of the first network device. The first network device may be, for example, a remote base station. The embodiments of the present application do not limit this.

As shown in fig. 7, the communication apparatus 700 may include: a determination unit 710 and a processing unit 720. The units in the apparatus 700 may be used to implement the corresponding processes performed by the first network device in the method 300 shown in fig. 3. For example, the determination unit 710 may be configured to perform step 330 of the method 300, and the processing unit 720 may be configured to perform step 340 or step 350 of the method 300.

Specifically, the determining unit 710 may be configured to determine a first time unit occupied by a signal that interferes with an uplink signal of a second network device in a downlink signal carried by a first downlink resource. The processing unit 720 is configured to mute a second time unit in a second downlink resource when the number of the first time units is less than or equal to a preset threshold, where a relative position of the second time unit in the second downlink resource is the same as a relative position of the first time unit in the first downlink resource, and the second downlink resource is a downlink resource located after the first downlink resource in a time domain; or, when the number of the first time units is greater than the preset threshold, the frequency domain position of the second time unit in the second downlink resource is adjusted according to the frequency domain position of the uplink resource for carrying the uplink signal, so that the frequency domain position of the resource corresponding to the second time unit in the second downlink resource is not overlapped with the frequency domain position of the uplink resource.

Optionally, the determining unit 710 may be specifically configured to determine the first time unit according to a transmission distance of the downlink signal and a position of the third time unit occupied by the interfered uplink signal of the second network device.

Optionally, the apparatus 700 may further include: a receiving unit operable to receive first indication information from the second network device, the first indication information indicating a relative location of the third time unit.

Optionally, the receiving unit may be further configured to receive second indication information from the second network device, where the second indication information is used to indicate a frequency domain location of the uplink resource.

Optionally, the uplink signal of the second network device is sent periodically, and a time length between the first time unit and the second time unit is an integer multiple of a sending period of the uplink signal of the second network device.

It should be understood that the division of the units in the embodiments of the present application is illustrative, and is only one logical function division, and there may be other division manners in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processor, may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.

Fig. 8 is another schematic block diagram of a communication device provided in an embodiment of the present application. The communication apparatus 800 may correspond to the second network device in the method embodiment, for example, the communication apparatus 800 may be the second network device, may also be a component (e.g., a circuit, a chip, a system-on-chip, etc.) in the second network device, or may also be a logic module or software that can implement all or part of the functions of the second network device. The second network device may be, for example, a near-end base station. The embodiments of the present application do not limit this.

As shown in fig. 8, the communication apparatus 800 may include: a generating unit 810 and a transmitting unit 820. The units in the apparatus 800 may be configured to implement the corresponding processes executed by the second network device in the method 300 shown in fig. 3. For example, the generating unit 810 may be configured to perform step 310 of the method 300, and the sending unit 820 may be configured to perform step 320 of the method 300.

Specifically, the generating unit 810 may be configured to generate first indication information, where the first indication information is used to indicate a third time unit occupied by a signal interfered by a downlink signal in a received uplink signal, and the downlink signal is carried in a first downlink resource of a first network device. The sending unit 820 may be configured to send the first indication information to the first network device.

Optionally, the generating unit 810 may be further configured to generate second indication information, where the second indication information is used to indicate a frequency domain position of an uplink resource, where the uplink resource is a resource used for carrying an uplink signal; the transmitting unit 820 may also be used to transmit second indication information.

Optionally, the uplink signal of the second network device is sent periodically.

It should be understood that the division of the units in the embodiments of the present application is illustrative, and is only one logical function division, and there may be other division manners in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processor, may exist alone physically, or may be integrated into one unit from two or more units. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. Fig. 13 is another schematic block diagram of a communication device provided in an embodiment of the present application. The communication apparatus 1300 may correspond to a network device in the method embodiment, may also be a component (such as a circuit, a chip, a system-on-chip, and the like) in the network device, or may also be a logic module or software that can implement all or part of the functions of the network device. The network device may specifically be the network device in the method 1100, for example, the network device may be used to implement the function of the fourth network device or the first network device in the method 300, which is not limited in this embodiment of the application.

As shown in fig. 13, the apparatus 1300 includes: a determination unit 1310 and a processing unit 1320. The units in the apparatus 1300 can be used to implement the corresponding processes performed by the network device in the method 1100 shown in fig. 11. For example, the determining unit 1310 may be used to perform step 1110 in the method 1100, and the processing unit 1320 may be used to perform step 1120 in the method 1100.

Specifically, the determining unit 1310 may be configured to determine a frequency domain position of an uplink resource and a frequency domain position of a downlink resource within a time range; the processing unit 1320 may be configured to schedule the uplink resource and the downlink resource according to the frequency domain position of the uplink resource and the frequency domain position of the downlink resource; the frequency domain position of the downlink resource is not overlapped with the frequency domain position of the uplink resource, the time range comprises a special time slot and an uplink time slot, the downlink resource comprises the downlink resource corresponding to the special time slot, and the uplink resource comprises the uplink resource corresponding to the special time slot and the uplink time slot.

Optionally, the determining unit 1310 is specifically configured to determine the frequency domain position of the uplink resource and the frequency domain position of the downlink resource within the time range according to the frequency domain position of the uplink resource and the frequency domain position of the downlink resource indicated in the higher layer signaling.

In a possible design, the apparatus 1300 may correspond to the third network device in the method 1100 above, and the determining unit 1310 is specifically configured to determine, according to a received scheduling request of an uplink resource or an uplink traffic statistic result within a coverage area of the apparatus 1300, a frequency domain location of the uplink resource within the time range; and determining the frequency domain position of the downlink resource in the time range in the residual frequency domain resources based on the frequency domain position of the uplink resource.

Optionally, the apparatus 1300 further includes a transceiver unit, configured to send third indication information to a fourth network device, where the third indication information is used to indicate a frequency domain position of the uplink resource scheduled by the apparatus 1300.

In another possible design, the apparatus 1300 may correspond to the fourth network device in the method 1100 above, and the apparatus 1300 further includes a transceiving unit configured to receive third indication information from a third network device, where the third indication information is used to indicate a frequency-domain location of an uplink resource scheduled by the first network device; the determining unit 1310 is specifically configured to determine the frequency domain position of the uplink resource indicated in the indication information as the frequency domain position of the uplink resource within the time range; and determining the frequency domain position of the downlink resource in the time range in the residual frequency domain resources.

Fig. 9 is another schematic block diagram of a communication device provided in an embodiment of the present application. The communication device 900 may be a system-on-a-chip. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.

As shown in fig. 9, the apparatus 900 may include at least one processor 910.

In one possible design, the at least one processor 910 may be configured to implement the functions of the first network device in the method 300 provided by the embodiment of the present application.

For example, when the apparatus 900 is used to implement the function of the first network device in the method 300 provided in the embodiment of the present application, the processor 910 may be configured to determine a first time unit occupied by a signal that interferes with an uplink signal of the second network device in a downlink signal carried by the first downlink resource; when the number of the first time units is less than or equal to a preset threshold, muting second time units in the second downlink resources, or when the number of the first time units is greater than the preset threshold, adjusting the frequency domain positions of the second time units in the second downlink resources according to the frequency domain positions of the uplink resources for bearing the uplink signals, so that the frequency domain positions of the resources corresponding to the second time units in the second downlink resources are not overlapped with the frequency domain positions of the uplink resources; the relative position of the second time unit in the second downlink resource is the same as the relative position of the first time unit in the first downlink resource, and the second downlink resource is a downlink resource located after the first downlink resource in the time domain. For details, reference is made to the detailed description in the method example, which is not repeated herein.

In another possible design, the at least one processor 910 may be configured to implement the functions of the second network device in the method 300 provided in the embodiment of the present application.

Exemplarily, when the apparatus 900 is configured to implement the function of the second network device in the method 300 provided in the embodiment of the present application, the processor 910 may be configured to generate first indication information, where the first indication information is used to indicate a third time unit occupied by a signal interfered by a downlink signal in a received uplink signal, and the downlink signal is carried in a first downlink resource of the first network device; and sending the first indication information to the first network equipment. For details, reference is made to the detailed description in the method example, which is not repeated herein.

In yet another possible design, the at least one processor 910 may be configured to implement the functions of the network device in the method 1100 provided by the embodiment of the present application.

Illustratively, when the apparatus 900 is used to implement the functions of the network device in the method 1100 provided by the embodiment of the present application, the processor 910 may be configured to: determining the frequency domain position of uplink resources and the frequency domain position of downlink resources within a time range; according to the frequency domain position of the uplink resource and the frequency domain position of the downlink resource, the uplink resource and the downlink resource are scheduled; the frequency domain position of the downlink resource is not overlapped with the frequency domain position of the uplink resource, the time range comprises a special time slot and an uplink time slot, the downlink resource comprises the downlink resource corresponding to the special time slot, and the uplink resource comprises the uplink resource corresponding to the special time slot and the uplink time slot. For details, reference is made to the detailed description in the method example, which is not repeated herein.

The apparatus 900 may also include at least one memory 920 for storing program instructions and/or data. A memory 920 is coupled to the processor 910. The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, and may be an electrical, mechanical or other form for information interaction between the devices, units or modules. The processor 910 may operate in conjunction with the memory 920. Processor 910 may execute program instructions stored in memory 920. At least one of the at least one memory may be included in the processor.

The apparatus 900 may also include a communication interface 930 for communicating with other devices over a transmission medium such that the apparatus 900 may communicate with other devices. Illustratively, when the apparatus 900 is used to implement the function of the first network device in the method provided by the embodiment of the present application, the other device may be a second network device; when the apparatus 900 is used to implement the function of the second network device in the method provided in the embodiment of the present application, the other device may be the first network device. The communication interface 930 may be, for example, a transceiver, an interface, a bus, a circuit, or a device capable of performing a transceiving function. Processor 910 may utilize communication interface 930 to transceive data and/or information and to implement the method performed by the first network device or the second network device in the embodiment corresponding to fig. 3 or to implement the method performed by the network device in the embodiment corresponding to fig. 11.

The specific connection medium between the processor 910, the memory 920 and the communication interface 930 is not limited in the embodiments of the present application. In fig. 9, the processor 910, the memory 920 and the communication interface 930 are connected via a bus. The bus lines are shown in fig. 9 as thick lines, and the connection manner between other components is merely illustrative and not limited thereto. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 9, but that does not indicate only one bus or one type of bus.

Fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present application. The network device may be, for example, a base station.

In one embodiment, the base station 1000 may be applied in the scenario shown in fig. 1, and performs the functions of the first network device or the second network device in the embodiment shown in the method 300. As shown, the base station 1000 may include one or more radio frequency units, such as a Remote Radio Unit (RRU) 1010 and one or more baseband units (BBUs) (which may also be referred to as Distributed Units (DUs)) 1020. The RRU 1010 may be referred to as a transceiver unit, and when the base station 1000 is used as the first network device in the method 300, the RRU 1010 corresponds to a receiving unit of the first network device. When the network device 1000 is used as the second network device in the method 300, the RRU 1010 corresponds to a sending unit of the second network device.

In another embodiment, the base station 1000 may be applied in the scenario shown in fig. 1 to perform the functions of the network device in the embodiment shown in the method 1100. The base station 1000 can include one or more RRUs 1010 and one or more BBUs 1020. The RRU 1010 can be referred to as a transceiver unit, and when the base station 1000 serves as a network device in the method 1100, the RRU 1010 corresponds to the transceiver unit in the network device.

Optionally, the RRU 1010 may also be referred to as a transceiver, transceiver circuitry, or transceiver, etc., which may include at least one antenna 1011 and a radio frequency unit 1012. Optionally, the RRU 1010 may include a receiving unit and a sending unit, where the receiving unit may correspond to a receiver (or receiver and receiving circuit), and the sending unit may correspond to a transmitter (or transmitter and transmitting circuit). The RRU 1010 is mainly used for transceiving radio frequency signals and converting radio frequency signals into baseband signals. The BBU 1020 is mainly used for baseband processing, base station control, and the like. The RRU 1010 and the BBU 1020 may be physically located together or may be physically located separately, i.e., distributed base stations.

The BBU 1020 is a control center of the base station. In one embodiment, the BBU 1020 corresponds to a determination unit and a processing unit of a first network device when the base station 1000 serves as the first network device, and the BBU 1020 corresponds to a generation unit of a second network device when the network device 1000 serves as the second network device. In another embodiment, when the base station 1000 is acting as a network device, the BBU 1020 corresponds to a determination unit and a processing unit of the network device. It is mainly used to perform baseband processing functions, such as channel coding, multiplexing, modulation, spreading, etc. For example, BBU 1020 may be used to control a base station to perform the operational procedures described above with respect to the first network device or the second network device or the network devices in the method embodiments.

In an example, the BBU 1020 may be formed by one or more boards, and the boards may support a radio access network of a single access system (e.g., an LTE network) together, or may support radio access networks of different access systems (e.g., an LTE network, a 5G network, or other networks) respectively. The BBU 1020 further includes a memory 1021 and a processor 1022. The memory 1021 is used for storing necessary instructions and data. The processor 1022 is configured to control the base station to perform necessary actions, for example, to control the base station to execute the operation procedures of the above method embodiments with respect to the first network device or the second network device or the network device. Memory 1021 and processor 1022 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

It should be understood that the base station 1000 shown in fig. 10 can implement the respective processes involving the first network device or the second network device in the method embodiment shown in fig. 3, or implement the respective processes involving the network device in the method embodiment shown in fig. 11. The operations and/or functions of the respective modules in the base station 1000 are respectively for implementing the corresponding flows in the above-described method embodiments. Reference may be made specifically to the description of the above method embodiments, and a detailed description is appropriately omitted herein to avoid redundancy.

The BBU 1020 described above can be used to perform the actions described in the embodiment of the method 300 described above that are implemented internally by the first network device or the second network device, while the RRU 1010 can be used to perform the actions described in the embodiment of the method described above that send information to other network devices or receive information from other network devices. BBU 1020 may also be used to perform actions implemented within network devices as described in the embodiments illustrated in the foregoing method 1100, while RRU 1010 may be used to perform actions described in the foregoing method embodiments to send information to other network devices or to receive information from other network devices. Please refer to the description of the previous embodiment of the method, which is not repeated herein.

It should be understood that the base station 1000 shown in fig. 10 is only one possible architecture of an access network device, and should not constitute any limitation to the present application. The method provided by the application can be applied to access network equipment with other architectures. For example, an access network device including CU, DU, and Active Antenna Unit (AAU), and the like. The present application is not limited to the specific architecture of the access network device.

It should be understood that the processor in the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in ram, flash, rom, prom, or eprom, registers, etc. as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and combines hardware thereof to complete the steps of the method.

It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), SLDRAM (synchronous DRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The present application further provides a computer program product comprising: a computer program (also referred to as code, or instructions), which when executed, causes a computer to perform the method performed by the first network device or the method performed by the second network device in the embodiment shown in fig. 3, or causes a computer to perform the method performed by the network device in the embodiment shown in fig. 11.

The present application also provides a computer-readable storage medium having stored thereon a computer program (also referred to as code, or instructions). The computer program, when executed, causes a computer to perform the method performed by the first network device or the method performed by the second network device in the embodiment shown in fig. 3, or causes a computer to perform the method performed by the network device in the embodiment shown in fig. 11.

As used in this specification, the terms "unit," "module," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps (step) described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical 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. In the several embodiments provided in the present application, it should be understood that the disclosed apparatus, device and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the unit is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

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

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

In the above embodiments, the functions of the functional units may be fully or partially implemented by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer program instructions (program) are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more available media. 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 Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

This functionality, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of communication, comprising:

the method comprises the steps that first network equipment determines a first time unit occupied by a signal which generates interference on an uplink signal of second network equipment in a downlink signal carried by a first downlink resource;

when the number of the first time units is less than or equal to a preset threshold, the first network device mutes a second time unit in a second downlink resource, a relative position of the second time unit in the second downlink resource is the same as a relative position of the first time unit in the first downlink resource, and the second downlink resource is a downlink resource located behind the first downlink resource in a time domain.

2. The method of claim 1, wherein the first network device determining the first time unit comprises:

and the first network equipment determines the first time unit according to the transmission distance of the downlink signal and the position of a third time unit occupied by the uplink signal interfered by the second network equipment.

3. The method of claim 2, wherein the method further comprises:

the first network device receives first indication information from the second network device, the first indication information indicating a location of the third time unit.

4. The method of any of claims 1 to 3, wherein the uplink signal of the second network device is transmitted periodically, and a length of time between the first time unit and the second time unit is an integer multiple of a transmission period of the uplink signal of the second network device.

5. A method of communication, comprising:

the method comprises the steps that a first network device determines a first time unit occupied by a signal which generates interference on an uplink signal of a second network device in a downlink signal carried by a first downlink resource;

when the number of the first time units is greater than a preset threshold, the first network device adjusts the frequency domain position of a second time unit in second downlink resources according to the frequency domain position of the uplink resources for bearing the uplink signals, so that the frequency domain position of the resources corresponding to the second time unit in the second downlink resources is not overlapped with the frequency domain position of the uplink resources, and the second downlink resources are downlink resources located behind the first downlink resources in the time domain.

6. The method of claim 5, wherein the first network device determining the first time unit comprises:

and the first network equipment determines a first time unit according to the transmission distance of the downlink signal and the position of a third time unit occupied by the interfered uplink signal of the second network equipment.

7. The method of claim 6, wherein the method further comprises:

8. The method of claim 7, wherein the method further comprises:

and the first network equipment receives second indication information from the second network equipment, wherein the second indication information is used for indicating the frequency domain position of the uplink resource.

9. The method according to any one of claims 5 to 8, wherein the uplink signal of the second network device is transmitted periodically, and the time length between the first time unit and the second time unit is an integer multiple of the transmission period of the uplink signal of the second network device.

10. A method of communication, comprising:

the second network equipment generates first indication information, wherein the first indication information is used for indicating a third time unit occupied by a signal interfered by a downlink signal in a received uplink signal, and the downlink signal is carried in a first downlink resource of the first network equipment;

and sending the first indication information to the first network equipment.

11. The method of claim 10, wherein the method further comprises:

the second network device generates second indication information, where the second indication information is used to indicate a frequency domain position of an uplink resource, and the uplink resource is a resource used to carry the uplink signal;

and the second network equipment sends the second indication information.

12. The method of claim 10 or 11, wherein the uplink signal of the second network device is transmitted periodically.

13. A method of communication, comprising:

the network equipment determines the frequency domain position of uplink resources and the frequency domain position of downlink resources in a time range, wherein the frequency domain position of the downlink resources is not overlapped with the frequency domain position of the uplink resources, the time range comprises a special time slot and an uplink time slot, the downlink resources comprise downlink resources corresponding to the special time slot, and the uplink resources comprise uplink resources corresponding to the special time slot and the uplink time slot;

and the network equipment schedules the uplink resource and the downlink resource according to the frequency domain position of the uplink resource and the frequency domain position of the downlink resource.

14. The method as claimed in claim 13, wherein said network device determining the frequency domain location of the uplink resource and the frequency domain location of the downlink resource within a time range comprises:

and the network equipment determines the frequency domain position of the uplink resource and the frequency domain position of the downlink resource in the time range according to the frequency domain position of the uplink resource and the frequency domain position of the downlink resource indicated in the high-level signaling.

15. The method of claim 13, wherein the network device is a third network device, and

the network device determining the frequency domain position of the uplink resource and the frequency domain position of the downlink resource within a time range includes:

the third network equipment determines the frequency domain position of the uplink resource within a time range according to the received scheduling request of the uplink resource or the uplink service statistical result within the coverage range of the third network equipment;

and the third network equipment determines the frequency domain position of the downlink resource in the time range in the residual frequency domain resources based on the frequency domain position of the uplink resource.

16. The method of claim 15, wherein the method further comprises:

and the third network equipment sends third indication information to fourth network equipment, wherein the third indication information is used for indicating the frequency domain position of the uplink resource scheduled by the third network equipment.

17. The method of claim 13, wherein the network device is a fourth network device, and

the fourth network device receives third indication information from the third network device, where the third indication information is used to indicate a frequency domain position of an uplink resource scheduled by the third network device within a time range;

the fourth network device determines the frequency domain position of the uplink resource indicated in the indication information as the frequency domain position of the uplink resource within the time range;

and the fourth network equipment determines the frequency domain position of the downlink resource in the time range in the residual frequency domain resources.

18. A communication apparatus comprising means for performing the method of any of claims 1-4.

19. A communication apparatus, characterized in that it comprises means for performing the method of any of claims 5 to 9.

20. A communication apparatus, characterized in that it comprises means for performing the method of any of claims 10 to 12.

21. A communication apparatus, characterized in that it comprises means for performing the method of any of claims 13 to 17.

22. A communications apparatus, comprising a processor configured to invoke program code for implementing a method as claimed in any one of claims 1 to 4, or a method as claimed in any one of claims 5 to 9, or a method as claimed in any one of claims 10 to 12, or a method as claimed in any one of claims 13 to 17.

23. A computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, causes a computer to perform the method of any one of claims 1 to 4, or causes the computer to perform the method of any one of claims 5 to 9, or causes the computer to perform the method of any one of claims 10 to 12, or the method of any one of claims 13 to 17.

24. A computer program product, comprising a computer program which, when executed, causes a computer to perform the method of any one of claims 1 to 4, or causes the computer to perform the method of any one of claims 5 to 9, or causes the computer to perform the method of any one of claims 10 to 12, or causes the computer to perform the method of any one of claims 13 to 17.