Wireless communication method and device, and storage medium

Abstract

A wireless communication method and device, and a storage medium. The method comprises: a first base station sends a first message to a second base station, the first message comprising first information and / or first priority information, the first information being used for instructing the first base station to request the second base station to refrain from downlink transmission on a first physical resource, and the first priority information being used for indicating the priority of the first physical resource at the first base station, wherein the first base station and the second base station have cross-link interference on the first physical resource, the first base station is an interfered base station in the cross-link interference, and the second base station is an interfering base station in the cross-link interference.

Description

Wireless communication method, device, and storage medium Technical Field

[0001] The embodiments of the present application relate to the field of mobile communication technologies, and in particular to a wireless communication method and device, and a storage medium. Background Art

[0002] To achieve higher spectral efficiency, cell deployment density is increasing. Duplex systems can dynamically configure uplink and downlink data transmission directions based on the cell's service status. However, when adjacent cells transmit data in different directions (such as uplink or downlink) on the same time-frequency resources, cross-link interference (CLI) can easily occur, seriously impacting system performance.

[0003] Summary of the Invention

[0004] Embodiments of the present application provide a wireless communication method and device, and a storage medium.

[0005] The wireless communication method provided in the embodiment of the present application includes:

[0006] The first base station sends a first message to the second base station, where the first message includes first information and / or first priority information, where the first information is used to indicate that the first base station requests the second base station not to perform downlink transmission on a first physical resource, and the first priority information is used to indicate a priority of the first physical resource on the first base station side.

[0007] There is cross-link interference between the first base station and the second base station on the first physical resource, and the first base station is the interfered base station in the cross-link interference, and the second base station is the interfering base station in the cross-link interference.

[0008] The wireless communication method provided in the embodiment of the present application includes:

[0009] The first base station receives a first message sent by the second base station, where the first message includes first information and / or first priority information, where the first information is used to indicate that the first base station requests the second base station not to perform downlink transmission on the first physical resource, and the first priority information is used to indicate a priority of the first physical resource on the first base station side;

[0010] There is cross-link interference between the first base station and the second base station on the first physical resource, and the first base station is the interfered base station in the cross-link interference, and the second base station is the interfering base station in the cross-link interference.

[0011] The embodiment of the present application provides, applied to a first base station, the following:

[0012] A first communication unit is configured to send a first message to a second base station, where the first message includes first information and / or first priority information, where the first information is used to indicate that the first base station requests the second base station not to perform downlink transmission on a first physical resource, and the first priority information is used to indicate a priority of the first physical resource on the first base station side;

[0013] There is cross-link interference between the first base station and the second base station on the first physical resource, and the first base station is the interfered base station in the cross-link interference, and the second base station is the interfering base station in the cross-link interference.

[0014] The second base station provided in this embodiment of the present application includes:

[0015] a second communication unit configured to receive a first message sent by a second base station, where the first message includes first information and / or first priority information, where the first information is used to indicate that the first base station requests the second base station not to perform downlink transmission on a first physical resource, and the first priority information is used to indicate a priority of the first physical resource on the first base station side;

[0016] There is cross-link interference between the first base station and the second base station on the first physical resource, and the first base station is the interfered base station in the cross-link interference, and the second base station is the interfering base station in the cross-link interference.

[0017] The communication device provided in an embodiment of the present application may be the first base station or the second base station in the above-mentioned solution, and includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and execute the computer program stored in the memory to perform the above-mentioned wireless communication method.

[0018] The chip provided in the embodiment of the present application is used to implement the above-mentioned wireless communication method.

[0019] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned wireless communication method.

[0020] The computer-readable storage medium provided in an embodiment of the present application is used to store a computer program, which enables a computer to execute the above-mentioned wireless communication method.

[0021] The computer program product provided in the embodiments of the present application includes computer program instructions, which enable a computer to execute the above-mentioned wireless communication method.

[0022] The computer program provided in the embodiment of the present application, when executed on a computer, enables the computer to execute the above-mentioned wireless communication method.

[0023] Through the above technical solution, when CLI occurs between the first base station and the second base station on the first physical resource, the first base station sends to the second base station first information requesting the second base station not to perform downlink transmission on the first physical resource and / or first priority information indicating the priority of the first physical resource on the first base station side, so that the second base station determines whether to not perform downlink transmission on the first physical resource based on the first information and / or the first priority information, thereby avoiding the use of the first physical resource of the first base station. Among them, the second base station is not forced not to perform downlink transmission on the first physical resource, but the CLI problem is resolved through negotiation, which can effectively help base stations to avoid interference while minimizing the impact on terminal performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] FIG1 is a schematic diagram of an application scenario of an embodiment of the present application;

[0026] FIG2 is a schematic diagram of an optional scenario of full-duplex with non-overlapping sub-bands according to an embodiment of the present application;

[0027] FIG3 is an optional schematic diagram of beam nulling according to an embodiment of the present application;

[0028] FIG4 is a schematic diagram of an optional flow chart of a wireless communication method according to an embodiment of the present application;

[0029] FIG5 is an optional schematic flow chart of a wireless communication method according to an embodiment of the present application;

[0030] FIG6 is a schematic diagram of an optional flow chart of a wireless communication method according to an embodiment of the present application;

[0031] FIG7 is an optional schematic flow chart of a wireless communication method according to an embodiment of the present application;

[0032] FIG8 is a schematic diagram of an optional flow chart of a wireless communication method according to an embodiment of the present application;

[0033] FIG9 is an optional schematic flow chart of a wireless communication method according to an embodiment of the present application;

[0034] FIG10 is an optional schematic flow chart of a wireless communication method according to an embodiment of the present application;

[0035] FIG11 is an optional schematic flow chart of a wireless communication method according to an embodiment of the present application;

[0036] FIG12 is an optional schematic flow chart of a wireless communication method according to an embodiment of the present application;

[0037] FIG13 is a schematic diagram of an application scenario of an embodiment of the present application;

[0038] FIG14 is a schematic diagram of an application scenario of an embodiment of the present application;

[0039] FIG15 is an optional schematic flow chart of a wireless communication method according to an embodiment of the present application;

[0040] FIG16 is a schematic diagram of an optional structure of a first base station according to an embodiment of the present application;

[0041] FIG17 is a schematic diagram of an optional structure of a second base station according to an embodiment of the present application;

[0042] FIG18 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0043] FIG19 is a schematic structural diagram of a chip according to an embodiment of the present application;

[0044] Figure 20 is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0045] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0046] FIG1 is a schematic diagram of an application scenario of an embodiment of the present application.

[0047] As shown in Figure 1, a communication system 100 may include a terminal device 110 and a network device 120. The network device 120 may communicate with the terminal device 110 via an air interface. The terminal device 110 and the network device 120 support multi-service transmission.

[0048] It should be understood that the embodiments of the present application are only illustrative of the communication system 100, but the embodiments of the present application are not limited thereto. That is, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, fifth generation (5G) communication system (also known as New Radio (NR) communication system), or future communication systems.

[0049] In the communication system 100 shown in Figure 1, the network device 120 may be an access network device that communicates with the terminal device 110. The access network device may provide communication coverage for a specific geographical area and may communicate with the terminal device 110 (eg, UE) located within the coverage area.

[0050] The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wireless connection.

[0051] The terminal device 110 can be used for device-to-device (D2D) communication.

[0052] The wireless communication system 100 may further include a core network device 130 for communicating with the base station. The core network device 130 may be a 5G core network (5G Core, 5GC) device. During network evolution, the core network device may also be called another name, or a new network entity may be formed by dividing the core network's functions. This embodiment of the present application does not limit this.

[0053] The functional units in the communication system 100 may also establish connections and implement communication via next generation (NG) network interfaces.

[0054] Figure 1 exemplarily shows a base station, a core network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple base stations and each base station may include other numbers of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0055] Optionally, different terminal devices 110 may perform side-by-side communication.

[0056] It should be noted that Figure 1 is merely an example of a system applicable to this application. Of course, the methods described in the embodiments of this application can also be applied to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and / or" herein simply describes an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the associated objects are in an "or" relationship. It should also be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, "A indicates B" can mean that A directly indicates B, for example, B can obtain information through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can obtain information through C; or it can mean that A and B have an association relationship. It should also be understood that the "correspondence" mentioned in the embodiments of this application can mean that there is a direct or indirect correspondence between two objects, or that there is an association relationship between the two objects, or a relationship between an indicator and the indicated, a configuration and the configured, and so on. It should also be understood that the “predefined” or “predefined rules” mentioned in the embodiments of the present application can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit its specific implementation method. For example, predefined can refer to a definition in a protocol. It should also be understood that in the embodiments of the present application, the “protocol” can refer to a standard protocol in the field of communications, such as an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0057] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0058] Subband non-overlapping full duplex (SBFD)

[0059] To overcome the problems of weak uplink coverage, long uplink latency, and insufficient uplink capacity caused by limited uplink resource allocation in NR TDD, SBFD technology was introduced. This technology allows data to be sent and received simultaneously on different subbands within the same subframe / timeslot / symbol. This technology is primarily used on the base station side, while the terminal side maintains the current state, that is, only supporting sending or receiving data within a subframe / timeslot / symbol. As shown in Figure 2, an uplink (UL) subband is configured in the middle subband of a downlink (DL) or flexible subframe / timeslot / symbol, where 210 and 220 are two examples of SBFD.

[0060] When the uplink occupies the full bandwidth, it is called dynamic TDD technology. This can be regarded as an extreme case of SBFD, which can dynamically adapt the transmission direction of time domain resources based on time slots.

[0061] Cross-link interference (CLI) handling

[0062] CLI processing includes the following two methods: beam nulling and coordinated scheduling

[0063] The beam nulling strategy can adjust the beam direction based on the measurement of the channel state information between base stations, so that the interfering base station has no transmission in the direction of the interfered base station, so that the downlink data transmission of the interfering base station will not affect the uplink reception of the interfered base station.

[0064] As shown in FIG3 , in the conventional beamforming (CBF) of base station 31 , the downlink transmission of base station 31 affects the uplink reception of base station 32 , thereby zero-limiting the generated beam so that the downlink data transmission of base station 31 does not affect the uplink reception of base station 32 .

[0065] Coordinated scheduling can avoid or mitigate cross-link interference by enabling base stations with greater cross-link interference to use different time-frequency resources to schedule transmissions in different directions of service terminals.

[0066] The duplexing technologies used or discussed in related technologies include dynamic TDD, which flexibly changes the transmission direction within each time slot, and SBFD, which embeds uplink subbands into downlink time slots. Both technologies face the inter-terminal CLI (CLI) issue caused by the flexibility of terminal configuration. Specifically, when adjacent terminals are configured with different transmission directions, the terminal receiving downlink data may experience interference from the neighboring terminal's uplink transmission. To mitigate cross-link interference, base stations typically employ methods such as coordinated scheduling or beam nulling for interference avoidance.

[0067] However, when a base station performs interference avoidance, it usually affects the performance of its own cell. For example, when beam nulling is performed, the downlink transmission in the direction of the interfered base station is reduced, so the downlink terminal performance in this direction will be affected.

[0068] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0069] FIG4 is a wireless communication method provided in an embodiment of the present application, which is applied to a first base station. As shown in FIG4 , the method includes:

[0070] S401. A first base station sends a first message to a second base station, where the first message includes first information and / or first priority information, where the first information is used to indicate that the first base station requests the second base station not to perform downlink transmission on a first physical resource, and the first priority information is used to indicate a priority of the first physical resource on the first base station side.

[0071] There is cross-link interference between the first base station and the second base station on the first physical resource, and the first base station is the interfered base station in the cross-link interference, and the second base station is the interfering base station in the cross-link interference.

[0072] FIG5 is a wireless communication method provided in an embodiment of the present application, which is applied to a second base station. As shown in FIG5 , the method includes:

[0073] S501. A second base station receives a first message sent by a first base station, where the first message includes first information and / or first priority information, where the first information is used to indicate that the first base station requests the second base station not to perform downlink transmission on a first physical resource, and the first priority information is used to indicate a priority of the first physical resource on the first base station side.

[0074] There is cross-link interference between the first base station and the second base station on the first physical resource, and the first base station is the interfered base station in the cross-link interference, and the second base station is the interfering base station in the cross-link interference.

[0075] Next, the wireless communication method shown in FIG. 4 or FIG. 5 is further described.

[0076] When CLI occurs between the first base station and the second base station on the first physical resource, the downlink transmission of the second base station on the first physical resource interferes with the uplink transmission of the first base station on the first physical resource, that is, the first base station is the interfered base station (Victim base station) and the second base station is the interfering base station (Aggressor base station).

[0077] A first base station sends a first message to a second base station, requesting the second base station not to perform downlink transmission on a first physical resource, i.e., to yield. In one example, the first message carries first information. In one example, the first message carries first priority information. In one example, the first message carries both the first information and the first priority information.

[0078] If the first message carries the first information, the first base station requests the second base station not to perform downlink transmission on the first physical resource.

[0079] After receiving the first information, the second base station decides whether to not perform downlink transmission on the first physical resource according to its own implementation.

[0080] If the first message carries the first priority information, the first base station notifies the second base station of the priority of the first physical resource on the first base station side, and the first priority information is used to assist the second base station in determining whether to not perform downlink transmission on the first physical resource.

[0081] After receiving the first priority information, the second base station decides whether to not perform downlink transmission on the first physical resource according to the first priority information.

[0082] If the first message carries the first information and the first priority information, the first base station requests the second base station not to perform downlink transmission on the first physical resource, and enables the second base station to determine whether not to perform downlink transmission on the first physical resource according to the first priority information.

[0083] After receiving the first information and the first priority information, the second base station may decide whether to accept the request of the first information, that is, whether to not perform the first request for downlink transmission on the first physical resource according to the first priority information.

[0084] The second base station may not accept the first request made by the first base station based on the first message, so as not to affect the downlink transmission not performed by the second base station on the first physical resource, thereby avoiding affecting the service users of the second base station. It may also accept the first request made by the first base station, thereby avoiding and eliminating the interference of the second base station on the uplink transmission of the first base station.

[0085] In this embodiment of the present application, the first information can be understood as being used to submit an interference avoidance request to the second base station. The first priority information indicates the priority of the first physical resource on the first base station side, which can reflect the importance of the first base station side's uplink transmission on the first physical resource, that is, the strength of the first base station's demand for the first physical resource. It can be understood as being used to assist the second base station in determining whether to accept the interference avoidance request. After receiving the first message, the second base station can refer to the information carried in the first message to determine whether to not perform downlink transmission on the first physical resource.

[0086] In a case where the first message includes the first priority information but does not include the first information, the first priority information may be used to request the second base station not to perform downlink transmission on the first physical resource.

[0087] In the wireless communication method provided by the embodiment of the present application, when CLI occurs between the first base station and the second base station on the first physical resource, the first base station sends to the second base station first information requesting the second base station not to perform downlink transmission on the first physical resource and / or first priority information indicating the priority of the first physical resource on the first base station side, so that the second base station determines whether to not perform downlink transmission on the first physical resource based on the first information and / or the first priority information, thereby avoiding the use of the first physical resource of the first base station. The second base station is not forced not to perform downlink transmission on the first physical resource, but the CLI problem is resolved through negotiation, which can effectively help the base stations to minimize the impact on terminal performance while avoiding each other.

[0088] In some embodiments, the first information is further used to instruct the first base station to request the second base station not to perform uplink transmission on the first physical resource.

[0089] If the first information is used to instruct the first base station to request the second base station not to perform downlink transmission on the first physical resource, the first information requests the second base station to perform downlink avoidance on the first physical resource.

[0090] If the first information is used to instruct the first base station to request the second base station not to perform downlink transmission and not to perform uplink transmission on the first physical resource, the first information is used to request the second base station to avoid uplink and downlink transmission on the first physical resource. In this case, it can be understood that the first information is used to request the second base station not to perform scheduling on the first physical resource.

[0091] It can be understood that the first priority information is used to assist in determining whether to accept the first request of the first information. If the first information requests the second base station to avoid downlink transmission on the first physical resource, the second base station determines whether to not perform downlink transmission on the first physical resource based on the first priority information; if the first information requests the second base station not to schedule on the first physical resource, the second base station determines whether to not schedule on the first physical resource based on the first priority information.

[0092] In some embodiments, the first priority information is related to one or more of the following carried by the first base station on the first physical resource: service type, transmission direction, number of transmitting users, and amount of transmitted data.

[0093] In the embodiment of the present application, if the first priority information is related to the transmission direction, it can be understood that the first priority information is related to the transmission direction of the data that can be carried on the first physical resource or the data transmission direction configured by the first physical resource.

[0094] In one example, the first priority information is related to one or more of the service type, the number of transmitting users, and the amount of transmitted data carried on the first physical resource.

[0095] In one example, the first priority information is related to one or more of the uplink service type carried on the first physical resource, the number of transmitting users, and the amount of transmitted data.

[0096] In an embodiment of the present application, the first physical resource can be used for both uplink and downlink transmissions. If the first priority information is related to the transmission direction, only uplink transmissions with CLI can be considered, thereby determining priority information for the CLI problem.

[0097] It can be understood that the first priority information is related to one or more of the service type, transmission direction, number of transmitted users and amount of transmitted data carried by the first base station on the first physical resource in the first cell, wherein the first cell is the service cell of the first base station.

[0098] In some embodiments, the first priority information indicates a high priority or a low priority; or,

[0099] The priority of the first physical resource indicated by the first priority information on the first base station side is higher or lower than the priority of the first physical resource on the second base station side.

[0100] In the embodiment of the present application, the manner in which the first priority information indicates the priority of the first physical resource in the first base station includes:

[0101] Indication mode 1: The first priority information indicates high priority or low priority;

[0102] Indication mode 2: the first priority information indicates the priority level of the first physical resource in the first base station;

[0103] For indication mode 1, the priority indicated by the first priority information includes two absolute priorities: high priority and low priority. The first priority information indicates high priority or low priority based on different values. In one example, a value of 1 for the first priority information indicates high priority, and a value of 0 for the first priority information indicates low priority.

[0104] If the indication mode of the first priority information is indication mode 1, after the second base station receives the first priority information, it determines the high priority or low priority based on the value of the first priority information, without considering the priority of the first physical resource on the second base station side.

[0105] For indication mode 2, the first priority information indicates a specific priority level of the first physical resource in the first base station. In one example, the priority range includes priority levels 0 to 5, and the priorities from 0 to 5 decrease in sequence. The first priority information indicates that the priority level of the first physical resource in the first base station is 2.

[0106] If the indication method of the first priority information is indication method 2, after receiving the first priority information, the second base station compares the priority level indicated by the first priority information with the priority level of the first physical resource on the second base station side, and determines the priority of the first physical resource on the first base station side and the priority of the first physical resource on the second base station side.

[0107] In one example, the priority range includes priority levels 0 to 5, and the priorities from 0 to 5 decrease in sequence. The first priority information indicates that the priority level of the first physical resource in the first base station is 2, and the priority level of the first physical resource in the second base station is 4. The second base station compares the priority level of the first physical resource in the first base station and the priority level of the first physical resource in the second base station, and determines that the priority of the first physical resource in the first base station is higher than the priority of the first physical resource in the second base station. At this time, the priority of the first physical resource indicated by the first priority information in the first base station is higher than the priority of the first physical resource in the second base station.

[0108] In one example, the priority range includes priority levels 0 to 5, and the priorities from 0 to 5 decrease in sequence. The first priority information indicates that the priority level of the first physical resource in the first base station is 2, and the priority level of the first physical resource in the second base station is 0. The second base station compares the priority level of the first physical resource in the first base station and the priority level of the first physical resource in the second base station, and determines that the priority of the first physical resource in the first base station is lower than the priority of the first physical resource in the second base station. At this time, the priority of the first physical resource indicated by the first priority information in the first base station is lower than the priority of the first physical resource in the second base station.

[0109] In an embodiment of the present application, the first priority information indicates a high priority; or, the priority of the first physical resource indicated by the first priority information on the first base station side is higher than the priority of the first physical resource on the second base station side, then the first priority information indicates that the priority of the first physical resource on the first base station side is high.

[0110] In an embodiment of the present application, the first priority information indicates a low priority; or, the priority of the first physical resource indicated by the first priority information on the first base station side is lower than the priority of the first physical resource on the second base station side, then the first priority information indicates that the priority of the first physical resource on the first base station side is low.

[0111] In some embodiments, if the first message includes the first priority information, the first priority information indicates a high priority; or, the first priority information indicates that the priority of the first physical resource on the first base station side is higher than the priority of the first physical resource on the second base station side, then the first priority information is used to indicate that the first base station requests the second base station not to perform downlink transmission on the first physical resource.

[0112] It is understandable that when the first message includes the first priority information but does not include the first information, if the first priority information indicates that the first physical resource has a high priority on the first base station side, then the first priority information is used to indicate that the first base station requests the second base station not to perform downlink transmission on the first physical resource.

[0113] The first priority information indicates that the first physical resource has a high priority on the first base station side, which means that the uplink transmission of the first base station on the first physical resource is more important, that is, the first base station has a strong demand for the first physical resource. In this case, the first base station can give priority to the use of the first physical resource, and the second base station may not perform downlink transmission on the first physical resource or not schedule on the first physical resource according to the first priority information.

[0114] In some embodiments, if the first message includes the first priority information, the first priority information indicates a low priority; or, the first priority information indicates that the priority of the first physical resource on the first base station side is lower than the priority of the first physical resource on the second base station side, then the first priority information is used to indicate the first base station to allow the second base station to perform downlink transmission on the first physical resource.

[0115] It can be understood that when the first message includes the first priority information but does not include the first information, if the first priority information indicates that the first physical resource has a low priority on the first base station side, then the first priority information is used to indicate the first base station to allow the second base station to perform downlink transmission on the first physical resource.

[0116] The first priority information indicates that the first physical resource has a low priority on the first base station side, which means that the uplink transmission of the first base station on the first physical resource is not very important, that is, the first base station has a weak demand for the first physical resource. The first base station allows the second base station to perform downlink transmission on the first physical resource. In this case, the second base station is given priority to use the first physical resource. The first base station allows the second base station not to avoid the first physical resource, and the second base station can maintain downlink transmission on the first physical resource.

[0117] In some embodiments, the first physical resource includes one of the following:

[0118] one or more time domain resources;

[0119] one or more frequency domain resources;

[0120] one or more time-frequency resources;

[0121] One or more airspace resources.

[0122] For the case where the first physical resource includes multiple time domain resources

[0123] When the first physical resource includes one or more time domain resources, the first priority information may indicate the priority of the one or more time domain resources as a whole at the first base station, or may indicate the priority of each of the one or more time domain resources at the first base station side. When the first priority information indicates the priority of each of the multiple time domain resources at the first base station side, the priorities of different time domain resources are independent or the same.

[0124] If the first priority information indicates the priority of one or more time-domain resources as a whole at the first base station, the first base station may request the second base station not to perform downlink transmission on the first physical resource based on the first physical resource as a whole. The second base station may determine whether to not perform downlink transmission on the first physical resource based on the first physical resource as a whole.

[0125] If the first priority information indicates the priority of each time domain resource in one or more time domain resources for the first base station, the first base station requests the second base station not to perform downlink transmission on each time domain resource at the granularity of the time domain resource. The second base station may determine whether to not perform downlink transmission on each time domain resource at the granularity of the time domain resource. The second base station may not perform downlink transmission on all or some of the time domain resources in the first physical resource.

[0126] For time domain resources whose priority on the first base station side is higher than that on the second base station side, the second base station may not perform downlink transmission on these time domain resources, that is, the second base station avoids using these time domain resources. For time domain resources whose priority on the first base station side is lower than that on the second base station side, the first base station allows the second base station to perform downlink transmission on these time domain resources, and the second base station may not avoid using these time domain resources.

[0127] In the embodiment of the present application, a time domain resource includes one or more time domain resource units, wherein the time domain resource unit includes: a symbol, a time slot, a subframe, a frame, etc.

[0128] In the embodiment of the present application, different time-domain resource units have the same or different broadband allocation types, where the broadband allocation types include SBFD and non-SBFD.

[0129] When the first physical resource includes multiple frequency domain resources

[0130] When the first physical resource includes one or more frequency domain resources, the first priority information may indicate the priority of the one or more frequency domain resources as a whole at the first base station, or may indicate the priority of each of the one or more frequency domain resources at the first base station side. When the first priority information indicates the priority of each of the multiple frequency domain resources at the first base station side, the priorities of different frequency domain resources are independent or the same.

[0131] If the first priority information indicates the priority of one or more frequency domain resources as a whole at the first base station, the first base station may request the second base station not to perform downlink transmission on the first physical resource based on the first physical resource as a whole. The second base station may determine whether to not perform downlink transmission on the first physical resource based on the first physical resource as a whole.

[0132] If the first priority information indicates the priority of each frequency domain resource in one or more frequency domain resources for the first base station, the first base station requests the second base station not to perform downlink transmission on each frequency domain resource at the granularity of the frequency domain resource. The second base station may determine whether to not perform downlink transmission on each frequency domain resource at the granularity of the frequency domain resource. The second base station may not perform downlink transmission on all or some of the frequency domain resources in the first physical resource.

[0133] For frequency domain resources whose priority on the first base station side is higher than that on the second base station side, the second base station may not perform downlink transmission on this frequency domain resource, that is, the second base station avoids using this frequency domain resource. For frequency domain resources whose priority on the first base station side is lower than that on the second base station side, the first base station allows the second base station to perform downlink transmission on this frequency domain resource, and the second base station may not avoid using this frequency domain resource.

[0134] In an embodiment of the present application, a frequency domain resource includes one or more frequency domain resource units, wherein the frequency domain resource units include: resource element (RE), resource block (RB), subband, partial bandwidth (BWP), etc.

[0135] When the first physical resource includes multiple time-frequency resources

[0136] When the first physical resource includes one or more time-frequency resources, the first priority information may indicate the priority of the one or more time-frequency resources as a whole at the first base station, or may indicate the priority of each of the one or more time-frequency resources at the first base station side. When the first priority information indicates the priority of each of the multiple time-frequency resources at the first base station side, the priorities of different time-frequency resources are independent or the same.

[0137] If the first priority information indicates the priority of one or more time-frequency resources as a whole at the first base station, the first base station may request the second base station not to perform downlink transmission on the first physical resource based on the first physical resource as a whole. The second base station may determine whether to not perform downlink transmission on the first physical resource based on the first physical resource as a whole.

[0138] If the first priority information indicates the priority of each of the one or more time-frequency resources in the first base station, the first base station requests the second base station not to perform downlink transmission on each of the time-frequency resources, using the granularity of the time-frequency resources. The second base station may determine whether to not perform downlink transmission on each of the time-frequency resources, using the granularity of the time-frequency resources. The second base station may not perform downlink transmission on all or some of the time-frequency resources in the first physical resource.

[0139] For time-frequency resources whose priority on the first base station side is higher than that on the second base station side, the second base station does not perform downlink transmission on this time-frequency resource, that is, the second base station avoids using this time-frequency resource. For time-frequency resources whose priority on the first base station side is lower than that on the second base station side, the first base station allows the second base station to perform downlink transmission on this time-frequency resource, and the second base station may not avoid using this time-frequency resource.

[0140] In an embodiment of the present application, a time-frequency resource includes one or more time-frequency resource units, wherein the time-frequency resource unit includes: a frequency domain resource unit on a time domain resource unit.

[0141] For the case where the first physical resource includes multiple spatial resources

[0142] When the first physical resource includes one or more spatial resources, the first priority information may indicate the priority of the one or more spatial resources as a whole at the first base station, or may indicate the priority of each of the one or more time-frequency resources at the first base station side. When the first priority information indicates the priority of each of the multiple spatial resources at the first base station side, the priorities of different spatial resources are independent or the same.

[0143] If the first priority information indicates the priority of one or more spatial resources as a whole at the first base station, the first base station may request the second base station not to perform downlink transmission on the first physical resource based on the first physical resource as a whole. The second base station may determine whether to not perform downlink transmission on the first physical resource based on the first physical resource as a whole.

[0144] If the first priority information indicates the priority of each of the one or more spatial resources for the first base station, the first base station may request the second base station not to perform downlink transmission on each of the spatial resources, using the granularity of the spatial resources. The second base station may determine whether to not perform downlink transmission on each of the spatial resources, using the granularity of the spatial resources. The second base station may not perform downlink transmission on all or some of the spatial resources in the first physical resources.

[0145] For spatial resources whose priority on the first base station side is higher than that on the second base station side, the second base station may not perform downlink transmission on this spatial resource, that is, the second base station avoids using this spatial resource. For spatial resources whose priority on the first base station side is lower than that on the second base station side, the first base station allows the second base station to perform downlink transmission on this spatial resource, and the second base station may not avoid using this spatial resource.

[0146] In an embodiment of the present application, one spatial resource includes one or more spatial resource units, wherein the spatial resource unit includes: a beam or a beam group consisting of multiple adjacent beams.

[0147] In some embodiments, the transmission behavior of the first message is periodic or aperiodic.

[0148] If the transmission of the first message is periodic, the first message is transmitted periodically with the first time granularity as the starting time, or the first message is transmitted periodically with the first time granularity within the first time period. The first time granularity may include one or more time domain resource units.

[0149] The wireless communication method provided in the embodiment of the present application can effectively help the base station formulate the optimal scheduling strategy to suppress cross-link interference while reducing the impact on terminal performance through information interaction between base stations.

[0150] Based on FIG4 , the wireless communication method provided in the embodiment of the present application may be shown in FIG6 , further comprising:

[0151] S402. The first base station receives a second message sent by the second base station, where the second message is used to respond to the first message.

[0152] Based on FIG5 , the wireless communication method provided in the embodiment of the present application may be shown in FIG7 , further comprising:

[0153] S502. The second base station sends a second message to the first base station, where the second message is used to respond to the first message.

[0154] The following further describes the content related to the second message.

[0155] The second base station determines whether to not perform downlink transmission on the first physical resource based on the received first message, and sends a second message to the first base station based on the determination result. It can be understood that the second message is used to indicate whether the second base station is allowed to not perform downlink transmission on the first physical resource.

[0156] Optionally, the second message carries first response information, and the first response information is used to indicate whether the second base station accepts the first request, that is, whether the second base station does not perform downlink transmission on the first physical resource. The first request is a request of the first message for the second base station not to perform downlink transmission on the first physical resource, that is, a request to avoid the first physical resource.

[0157] In the wireless communication method provided in the embodiment of the present application, when the second base station determines whether to avoid the second base station based on the first message sent by the first base station, the second base station returns the determination result to the first base station, so that the first base station promptly knows whether the second base station avoids the second base station, thereby adjusting its own transmission to ensure normal transmission.

[0158] In some embodiments, the second message is used to indicate one of the following:

[0159] The second base station allows the first physical resource or part of the first physical resource not to perform downlink transmission;

[0160] The second base station does not allow the first physical resource or part of the first physical resource to not perform downlink transmission.

[0161] If the second base station determines not to perform downlink transmission on the first physical resource or part of the first physical resource, the second message sent to the first base station indicates that the second base station is allowed not to perform downlink transmission on the first physical resource or part of the first physical resource.

[0162] If the second base station determines to maintain downlink transmission on the first physical resource or part of the first physical resource, the second message sent to the first base station indicates that the second base station is not allowed to not perform downlink transmission on the first physical resource or part of the first physical resource.

[0163] It can be understood that part of the first physical resources can be understood as part of the time domain resources, part of the frequency domain resources, part of the time-frequency resources or part of the spatial domain resources of the first physical resources.

[0164] Optionally, if the second message indicates whether the second base station allows or does not allow part of the first physical resources to not be downlink transmitted, the second message may further include resource indication information, where the resource indication information is used to indicate the part of the first physical resources.

[0165] In some embodiments, the transmission behavior of the second message is periodic or aperiodic.

[0166] In an embodiment of the present application, if the transmission of the second message is periodic, the second message is transmitted with the second time granularity as the period starting from the time of the first transmission, or the second message is transmitted with the second time granularity as the period within the second time period. The second time granularity may include one or more time domain resource units.

[0167] Optionally, the first time granularity is the same as or different from the second time granularity.

[0168] In some embodiments, the transmission behavior of the first message is the same as the transmission behavior of the second message, that is, if the first message is periodic, the second message is periodic; if the first message is aperiodic, the second message is aperiodic.

[0169] In some embodiments, if the first base station does not receive a second message within a first time period after sending the first message, it determines whether the second base station allows or does not allow downlink transmission on the first physical resource, and the second message is used to respond to the first message.

[0170] In some embodiments, if the second base station allows or does not allow downlink transmission on the first physical resource, the second base station does not send a second message to the first base station, where the second message is used to respond to the first message.

[0171] For the second base station, if the second base station allows or does not allow downlink transmission on the first physical resource, the second message is not sent to the first base station, and the second message is used to indicate whether the second base station allows not downlink transmission on the first physical resource.

[0172] After the second base station determines whether to accept the first request, it may send or not send the second message to the first base station according to the determination result.

[0173] In the embodiment of the present application, the first base station and the second base station negotiate whether the second base station allows or does not allow not transmitting the second message when downlink transmission is not performed on the first physical resource.

[0174] Taking the negotiation between the first base station and the second base station as an example, in which the second base station allows not transmitting the second message when no downlink transmission is performed on the first physical resource, if the second base station accepts the first request, it does not send the second message to the first base station. If the first base station does not receive the second message within the first time period, it is considered that the second base station allows not transmitting downlink transmission on the first physical resource, that is, the second base station avoids the first physical resource; if the second base station does not accept the first request, it sends a second message to the first base station, and the second message indicates that the second base station does not allow not transmitting downlink on the first physical resource or part of the first physical resource.

[0175] Taking the negotiation between the first base station and the second base station that the second base station does not allow not transmitting the second message when downlink transmission is not performed on the first physical resource as an example, if the second base station does not accept the first request, it will not send the second message to the first base station. If the first base station does not receive the second message within the first time length, it is considered that the second base station does not allow not transmitting downlink transmission on the first physical resource, that is, the second base station does not avoid the first physical resource; if the second base station accepts the first request, it will send a second message to the first base station, and the second message indicates that the second base station allows not transmitting downlink on the first physical resource or part of the first physical resource.

[0176] Based on FIG4 , the wireless communication method provided in the embodiment of the present application may be shown in FIG8 , further comprising:

[0177] S403. The first base station receives a third message sent by the second base station, where the third message includes second information and / or second priority information. The second information is used to indicate that the second base station requests the first base station to perform uplink transmission on a second physical resource. The second priority information is used to indicate the priority of the second physical resource on the second base station side.

[0178] Based on FIG5 , the wireless communication method provided in the embodiment of the present application may be shown in FIG9 , further comprising:

[0179] S503. The second base station sends a third message to the first base station, where the third message includes second information and / or second priority information. The second information is used to indicate that the second base station requests the first base station to perform uplink transmission on a second physical resource. The second priority information is used to indicate the priority of the second physical resource on the second base station side.

[0180] The following further describes the content related to the third message.

[0181] The second base station sends a third message to the first base station to request the first base station to perform uplink transmission on the second physical resource, that is, to transmit through other physical resources to avoid the first physical resource.

[0182] Here, the second base station requests the first base station to perform uplink transmission on the second physical resource, which can be understood as the second base station requesting the first base station to change the physical resource for uplink transmission from the first physical resource to the second physical resource.

[0183] In one example, the third message carries the second information. In one example, the third message carries the second priority information. In one example, the third message carries the second information and the second priority information.

[0184] If the third message carries the second information, the second base station requests the first base station to perform uplink transmission on the second physical resource.

[0185] After receiving the second information, the first base station decides whether to perform uplink transmission on the second physical resource according to its own implementation.

[0186] If the third message carries the second priority information, the second base station notifies the first base station of the priority of the second physical resource on the second base station side, and the second priority information is used to assist the first base station in determining whether to perform uplink transmission on the second physical resource.

[0187] After receiving the second priority information, the first base station decides whether to perform uplink transmission on the second physical resource according to the second priority information.

[0188] If the third message carries the second information and the second priority information, the second base station requests the first base station to perform uplink transmission on the second physical resource, and enables the first base station to determine whether to perform uplink transmission on the second physical resource according to the second priority information.

[0189] After receiving the second information and the second priority information, the first base station may decide whether to accept the request of the second information, that is, whether to perform the second request for uplink transmission on the second physical resource according to the second priority information.

[0190] The first base station may also accept the second request made by the second base station, thereby performing uplink transmission on the second physical resource, thereby resolving the CLI issue while ensuring the uplink transmission of the first base station and avoiding impact on users served by the first base station. The first base station may not accept the second request made by the second base station based on the third message.

[0191] In this embodiment of the present application, the second information can be understood as a second request for interference avoidance to the first base station. The second priority information indicates the priority of the second physical resource on the second base station side, which can reflect the importance of the second base station side's transmission on the second physical resource, that is, the strength of the second base station's demand for the second physical resource. It can be understood as assisting the first base station in determining whether to accept the interference avoidance request. After receiving the third message, the first base station can refer to the information carried in the third message to determine whether to perform uplink transmission on the second physical resource.

[0192] In a case where the third message includes the second priority information but does not include the second information, the second priority information may be used to request the first base station to perform uplink transmission on the second physical resource.

[0193] In this embodiment of the present application, the third message is also used to instruct the second base station not to accept the request not to perform downlink transmission on the first physical resource.

[0194] In the wireless communication method provided by the embodiment of the present application, when CLI occurs between the first base station and the second base station on the first physical resource, the second base station sends to the first base station second information requesting the first base station to perform uplink transmission on the second physical resource and / or second priority information indicating the priority of the second physical resource on the second base station side, so that the first base station determines whether to perform uplink transmission on the second physical resource based on the second information and / or the second priority information, thereby resolving the CLI problem through negotiation, which can effectively help base stations to avoid each other while minimizing the impact on terminal performance. The wireless communication method provided by the embodiment of the present application can also reduce the impact on the data transmission performance of the terminal for time-frequency resource scheduling, thereby ensuring terminal performance.

[0195] In an embodiment of the present application, the second base station may send a second message and a third message to the first base station. In this case, the second message and the third message may be carried in one signaling or carried in different signalings.

[0196] In some embodiments, the third message is received when the first base station receives a second message in response to the first message, and the second message indicates that the second base station does not allow the first physical resource or part of the first physical resource to not be downlink transmitted.

[0197] When the second base station sends the second message and the third message to the first base station, if the second message indicates that the second base station does not allow downlink transmission on the first physical resource or part of the first physical resource, that is, the second base station does not avoid the first physical resource or part of the first physical resource, it sends a third message to the first base station to instruct the first base station to avoid the second physical resource.

[0198] In some embodiments, the second priority information is related to one or more of the following carried by the second base station on the second physical resource: service type, transmission direction, number of transmitting users, and amount of transmitted data.

[0199] In the embodiment of the present application, if the second priority information is related to the transmission direction, it can be understood that the second priority information is related to the transmission direction of the data that can be carried on the second physical resource or the data transmission direction configured by the second physical resource.

[0200] In one example, the second priority information is related to one or more of the service type, the number of transmitting users, and the amount of transmitted data carried on the second physical resource.

[0201] In one example, the second priority information is related to one or more of the downlink service type, the number of transmission users, and the amount of transmission data carried on the second physical resource.

[0202] In an embodiment of the present application, the second physical resource can be used for uplink transmission and downlink transmission. If the second priority information is related to the transmission direction, only the downlink transmission of the second base station that may cause CLI problems can be considered, thereby avoiding the emergence of new CLI problems.

[0203] It can be understood that the second priority information is related to one or more of the service type, transmission direction, number of transmitted users and amount of transmitted data carried by the second base station on the second physical resource in the second cell, where the second cell is the service cell of the second base station.

[0204] In some embodiments, the second priority information indicates a high priority or a low priority; or,

[0205] The priority of the second physical resource indicated by the second priority information on the second base station side is higher or lower than the priority of the second physical resource on the first base station side.

[0206] In the embodiment of the present application, the manner in which the second priority information indicates the priority of the second physical resource in the second base station includes:

[0207] Indication mode 3: the second priority information indicates high priority or low priority;

[0208] Indication mode 4: the second priority information indicates the priority level of the second physical resource in the second base station;

[0209] For indication method 3, please refer to indication method 1 of the first priority information, which will not be repeated here.

[0210] If the indication method of the second priority information is indication method 3, after the first base station receives the second priority information, it determines the high priority or low priority based on the value of the second priority information, without considering the priority of the second physical resource on the first base station side.

[0211] For indication mode 2, please refer to indication mode 2 of the first priority information, which will not be repeated here.

[0212] If the indication method of the second priority information is indication method 4, after receiving the second priority information, the first base station compares the priority level indicated by the second priority information with the priority level of the second physical resource on the first base station side to determine the priority of the second physical resource on the second base station side and the priority of the second physical resource on the first base station side.

[0213] In one example, the priority range includes priority levels 0 to 5, and the priorities from 0 to 5 decrease in sequence. The second priority information indicates that the priority level of the second physical resource in the second base station is 2, and the priority level of the second physical resource in the first base station is 4. The first base station compares the priority level of the second physical resource in the second base station with the priority level of the second physical resource in the first base station, and determines that the priority of the second physical resource in the second base station is higher than the priority of the second physical resource in the first base station. At this time, the priority of the second physical resource indicated by the second priority information in the second base station is higher than the priority of the second physical resource in the first base station.

[0214] In one example, the priority range includes priority levels 0 to 5, and the priorities from 0 to 5 decrease in sequence. The second priority information indicates that the priority level of the second physical resource in the second base station is 2, and the priority level of the second physical resource in the first base station is 0. The first base station compares the priority level of the second physical resource in the second base station with the priority level of the second physical resource in the first base station, and determines that the priority of the second physical resource in the second base station is lower than the priority of the second physical resource in the first base station. At this time, the priority of the second physical resource indicated by the second priority information in the second base station is lower than the priority of the second physical resource in the first base station.

[0215] In an embodiment of the present application, the second priority information indicates a high priority; or, the priority of the second physical resource indicated by the second priority information on the second base station side is higher than the priority of the second physical resource on the first base station side, then the second priority information indicates that the priority of the second physical resource on the second base station side is high.

[0216] In this embodiment of the present application, the second priority information indicates a low priority; or, the priority of the second physical resource indicated by the second priority information on the second base station side is higher than the priority of the second physical resource on the first base station side, then the second priority information indicates that the priority of the second physical resource on the second base station side is low.

[0217] In some embodiments, if the third message includes the second priority information, the second priority information indicates a high priority; or the priority of the second physical resource indicated by the second priority information on the second base station side is higher than the priority of the second physical resource on the first base station side, then the second priority information is used to indicate that the second base station requests the first base station not to perform uplink transmission on the second physical resource.

[0218] It can be understood that when the third message includes the second priority information but does not include the second information, if the second priority information indicates that the second physical resource has a high priority on the second base station side, then the second priority information is used to indicate that the second base station requests the first base station not to perform uplink transmission on the second physical resource.

[0219] The second priority information indicates that the second physical resource has a high priority on the second base station side, which means that the downlink transmission of the second base station on the second physical resource is more important, that is, the second base station has a strong demand for the second physical resource. In this case, the second base station can give priority to the use of the second physical resource, and the first base station may not perform uplink transmission on the second physical resource according to the second priority information.

[0220] In some embodiments, if the third message includes the second priority information, the second priority information indicates a low priority; or the priority of the second physical resource indicated by the second priority information on the second base station side is lower than the priority of the second physical resource on the first base station side, then the second priority information is used to indicate the second base station to allow the first base station to perform uplink transmission on the second physical resource.

[0221] It is understandable that when the third message includes the second priority information but does not include the second information, if the second priority information indicates that the second physical resource has a low priority on the second base station side, then the second priority information is used to indicate the second base station to allow the first base station to perform uplink transmission on the second physical resource.

[0222] The second priority information indicates that the second physical resource has a low priority on the second base station side, which means that the downlink transmission of the second base station on the second physical resource is not very important, that is, the second base station has a weak demand for the second physical resource. The second base station allows the first base station to perform uplink transmission on the second physical resource. In this case, the first base station is given priority to use the second physical resource, and the second base station allows the first base station not to avoid using the second physical resource.

[0223] In some embodiments, the second physical resource includes one of the following:

[0224] one or more time domain resources;

[0225] one or more frequency domain resources;

[0226] one or more time-frequency resources;

[0227] One or more airspace resources.

[0228] In an embodiment of the present application, the description of the second physical resource including one or more time domain resources, one or more frequency domain resources, one or more time-frequency resources or one or more spatial domain resources can be referred to the description of the first physical resource including one or more time domain resources, one or more frequency domain resources, one or more time-frequency resources or one or more spatial domain resources, which will not be repeated here.

[0229] Referring to the first base station requesting the second base station not to perform downlink transmission on the first physical resource as a whole using the first physical resource, for the second physical resource, the second base station requests the first base station to perform uplink transmission on the second physical resource using the second physical resource as a whole. The first base station can determine whether to perform uplink transmission on the second physical resource based on the second physical resource as a whole.

[0230] With reference to the first base station requesting the second base station not to perform downlink transmission on each time domain resource, frequency domain resource, time-frequency resource, or spatial domain resource at the granularity of time domain resources, frequency domain resources, time-frequency resources, or spatial domain resources, for the second physical resource, the second base station requests the first base station to perform uplink transmission on each time domain resource, frequency domain resource, time-frequency resource, or spatial domain resource at the granularity of time domain resources, frequency domain resources, time-frequency resources, or spatial domain resources. Then, the first base station can determine whether to perform uplink transmission on each time domain resource, frequency domain resource, time-frequency resource, or spatial domain resource at the granularity of time domain resources, frequency domain resources, time-frequency resources, or spatial domain resources. The first base station can perform uplink transmission on all or part of the resources in the second physical resource.

[0231] In some embodiments, the transmission behavior of the third message is periodic or aperiodic.

[0232] If the third message is transmitted periodically, the third message is transmitted periodically at a third time granularity starting from the time of the first transmission, or the third message is transmitted periodically at the third time granularity within a third time period. The third time granularity may include one or more time domain resource units.

[0233] Optionally, the third time granularity is the same as or different from the second time granularity or the first time granularity.

[0234] Optionally, the third time period is the same as or different from the second time period.

[0235] In some embodiments, the transmission behavior of the first message is the same as the transmission behavior of the third message, that is, if the first message is periodic, the third message is periodic; if the first message is aperiodic, the third message is aperiodic.

[0236] According to the wireless communication method provided in an embodiment of the present application, when the request of the first base station is not allowed, the second base station may provide the first base station with a second physical resource indicating its low priority through second priority information, thereby providing information for the first base station to formulate a scheduling strategy.

[0237] Based on FIG4 , the wireless communication method provided in an embodiment of the present application, as shown in FIG10 , includes:

[0238] S404. The first base station sends a fourth message to the second base station, where the fourth message is used to respond to the third message.

[0239] Based on FIG5 , the wireless communication method provided in an embodiment of the present application, as shown in FIG11 , includes:

[0240] S504. The second base station receives a fourth message sent by the first base station, where the fourth message is used to respond to the third message.

[0241] Next, the content related to the fourth message is further described.

[0242] The first base station determines whether to perform uplink transmission on the second physical resource based on the received third message, and sends a fourth message to the second base station according to the determination result.

[0243] It can be understood that the fourth message is used to indicate whether the first base station allows uplink transmission on the second physical resource.

[0244] Optionally, the fourth message carries second response information, and the second response information is used to indicate whether the first base station accepts the second request, that is, whether the first base station performs uplink transmission on the second physical resource. The second request is the request of the third message for the first base station to perform uplink transmission on the second physical resource, that is, a request to avoid on the second physical resource.

[0245] In the wireless communication method provided in the embodiment of the present application, when the first base station determines whether to avoid based on the third message sent by the second base station, the first base station returns the determination result to the second base station, so that the second base station can promptly know the avoidance result of the first base station, thereby adjusting its own transmission to ensure normal transmission.

[0246] In some embodiments, if the first base station allows or does not allow uplink transmission on the second physical resource, the first base station does not send a fourth message to the second base station, where the fourth message is used to respond to the third message.

[0247] In some embodiments, if the first base station allows or does not allow uplink transmission on the second physical resource, the first base station does not send a fourth message to the second base station, where the fourth message is used to respond to the third message.

[0248] In some embodiments, if the second base station does not receive a fourth message within a second time period after sending the third message, it determines whether the first base station allows or does not allow uplink transmission on the second physical resource, and the fourth message is used to respond to the third message.

[0249] For the first base station, when the first base station allows or does not allow uplink transmission on the second physical resource, the fourth message is not sent to the second base station, and the fourth message is used to indicate whether the first base station allows uplink transmission on the second physical resource.

[0250] After the first base station determines whether to accept the second request, it may send or not send the fourth message to the second base station according to the determination result.

[0251] In the embodiment of the present application, the first base station and the second base station negotiate whether the first base station allows or does not allow downlink transmission on the second physical resource and does not transmit the fourth message.

[0252] Taking the negotiation between the first base station and the second base station as an example, in which the first base station allows uplink transmission on the second physical resource but does not transmit the fourth message, if the first base station accepts the second request, it does not send the fourth message to the second base station. If the second base station does not receive the fourth message within the second time period, it is considered that the first base station allows downlink transmission on the second physical resource, that is, the first base station avoids the second physical resource; if the first base station does not accept the second request, it sends the fourth message to the second base station, and the fourth message indicates that the first base station does not allow uplink transmission on the second physical resource or part of the second physical resource.

[0253] Taking the negotiation between the first base station and the second base station that the first base station does not allow uplink transmission on the second physical resource as an example, if the first base station does not accept the second request, it does not send the fourth message to the second base station. If the second base station does not receive the fourth message within the second time period, it is considered that the first base station does not allow uplink transmission on the second physical resource, that is, the first base station does not avoid the second physical resource; if the first base station accepts the second request, it sends the fourth message to the second base station, and the fourth message indicates that the first base station allows uplink transmission on the second physical resource or part of the second physical resource.

[0254] In some embodiments, the wireless communication method provided in the embodiments of the present application may be as shown in FIG12 , including:

[0255] S1201. A first base station sends a first message to a second base station.

[0256] S1202. The second base station sends a second message and / or a third message to the first base station.

[0257] S1203. The first base station sends a fourth message to the second base station.

[0258] In the embodiment of the present application, the first message, the second message, the third message, and the fourth message can be referred to in the records of other parts and will not be repeated here.

[0259] In the embodiment of the present application, negotiated scheduling of resources is achieved through information interaction between the first base station and the second base station, which solves the CLI problem while reducing the impact on the data transmission performance of the terminal device.

[0260] The following further describes the wireless communication method provided in the embodiments of the present application.

[0261] The embodiment of the present application provides a method for information interaction between base stations, which can effectively help base stations formulate optimal scheduling strategies, while suppressing cross-link interference and reducing the impact on terminal performance.

[0262] The method for information interaction between base stations provided in the embodiment of the present application includes:

[0263] The first base station transmits a first request message to the second base station through an inter-base station interface, where the first request message includes first priority information.

[0264] The first request message is used to request the second base station not to schedule or configure uplink transmission in the first physical resource and not to perform downlink transmission.

[0265] The first priority information is related to the service type, transmission direction, number of transmitting users, and amount of transmitted data carried by the first base station on the first physical resource in the cell;

[0266] When the first priority information is of high priority, it instructs the first base station to request the second base station not to schedule or configure uplink transmission on the physical resources corresponding to the priority information; when the first priority information is of low priority, it instructs the first base station to allow the second base station to transmit on the physical resources corresponding to the priority information.

[0267] The wireless communication methods provided in the embodiments of the present application include but are not limited to the following embodiments 1 to 3:

[0268] Example 1

[0269] The first base station transmits a first request message, namely a first message, to the second base station through an inter-base station interface, where the first request message includes first priority information.

[0270] The first request message is used to request the second base station not to schedule in the first physical resource, or to configure uplink transmission but not to perform downlink transmission.

[0271] The first priority information is related to the service type, transmission direction, number of transmitting users, and amount of transmitted data carried by the first base station on the first physical resource in the cell;

[0272] When the first priority information is of high priority, it instructs the first base station to request the second base station not to schedule or configure uplink transmission on the physical resources corresponding to the priority information; when the first priority information is of low priority, it instructs the first base station to allow the second base station to transmit on the physical resources corresponding to the priority information.

[0273] The first physical resource includes one or more first time domain resources, and the first time domain resource is, optionally, one or more symbols or one or more slots;

[0274] The first physical resource includes one or more first frequency domain resources, and the first frequency domain resource is optionally one or more REs, one or more RBs, or one subband, or one BWP;

[0275] The first physical resource includes one or more first time-frequency resources, and the first time-frequency resource block is, optionally, one or more RBs on one or more symbols;

[0276] The first physical resource includes one or more first beam directions, and the first beam direction, optionally, is one beam or one beam group including multiple adjacent beams.

[0277] The time domain behavior of transmitting the first priority information is periodic, including periodic transmission at a first time granularity within a second time domain resource starting from the time the first request message is sent, where the second time domain resource may be a plurality of symbols or one or more slots, and the first time granularity may be one symbol or a plurality of symbols, or one or more slots;

[0278] The time domain behavior of the first priority information transmission is non-periodic.

[0279] Example 2

[0280] Based on the first embodiment, the first base station receives a first response message transmitted by the second base station through the inter-base station interface, where the first response message includes a confirmation message of the first request message, that is, a second message;

[0281] The first response message may optionally further include a second request message, ie, a third message, where the second request message includes second priority information.

[0282] The time domain behavior of transmitting the first response message is periodic or aperiodic, and is determined by the time domain behavior of the first request message.

[0283] The confirmation information of the first request message may indicate whether the first base station is allowed to request the second base station not to schedule or configure uplink transmission in the first physical resource;

[0284] The confirmation information of the first request message may indicate that the request is allowed, or partially allowed, implicitly indicating that the transmission priority of the second base station within the allowed physical resources is lower than that of the first base station;

[0285] The confirmation information of the first request message may indicate that the request is not allowed, or is partially not allowed, implicitly indicating that the transmission priority of the second base station in the not allowed physical resources is not lower than that of the first base station.

[0286] In the first response message indicating that the request is not allowed or partially not allowed, optionally, the first response message also includes a second request message, and the second request message includes second priority information.

[0287] The second request message is used to request the first base station to perform uplink transmission in the second physical resource.

[0288] The second priority information is related to the service type, transmission direction, number of transmitting users, and amount of transmitted data carried by the second base station on the second physical resource in the cell;

[0289] When the second priority information indicates low priority, it instructs the second base station to allow the first base station to transmit on the physical resources corresponding to the priority information; when the second priority information is high priority, it instructs the second base station to request the first base station not to schedule on the physical resources corresponding to the priority information.

[0290] The second physical resource includes one or more first time domain resources, and the first time domain resource is, optionally, one or more symbols or one or more slots;

[0291] The second physical resource includes one or more first frequency domain resources, and the first frequency domain resource is optionally one or more REs, one or more RBs, or one subband, or one BWP;

[0292] The second physical resource includes one or more first time-frequency resources, and the first time-frequency resource block is optionally one or more RBs on one or more symbols;

[0293] The second physical resource includes one or more first beam directions, and the first beam direction, optionally, is one beam or one beam group including multiple adjacent beams.

[0294] The first base station does not receive a first response message within a predetermined time period after the first request message is sent, indicating that the first request message is not allowed.

[0295] The second priority information can indicate that certain physical resources of this cell cannot be avoided to avoid affecting the users served by this cell; when the request of the first base station is not allowed, the provision of the second priority information can indicate the physical resources with low priority, and provide information for the first base station to formulate a scheduling strategy.

[0296] Example 3

[0297] Based on the second embodiment, the first base station may optionally transmit a second response message to the second base station through an inter-base station interface.

[0298] The second response message includes confirmation information of the second request message;

[0299] The confirmation information of the second request message may indicate whether the second base station requests the first base station to allow uplink transmission in the second physical resource, and implicitly indicates the transmission priority of the first base station in the second physical resource;

[0300] The second base station does not receive the first response message within the agreed time period after the second request message is sent, indicating that the second request message is not allowed.

[0301] The communication scenario of the wireless communication method provided in an embodiment of the present application can be shown in Figure 13. Under SBFD or dynamic TDD, gNB1 and gNB2 transmit in different directions and generate cross-link interference. gNB1 and gNB2 are neighboring cell base stations, with gNB1 being the victim base station and gNB2 being the aggressor base station. To avoid interference, gNB1 and gNB2 need to adopt certain coordinated scheduling or beam nulling strategies to avoid interference. Typically, the interfered party will request the interfering party to perform coordinated scheduling or beam nulling strategies to suppress interference. However, interference avoidance will inevitably cause downlink user performance loss in the interfering cell.

[0302] In the wireless communication method provided in the embodiment of the present application, an optimal scheduling method is sought through information interaction, wherein the information interaction between base stations can be controlled through an Xn interface or by a central node.

[0303] The CLI provided in this embodiment of the present application may be shown in FIG14 . In the cell of gNB1, gNB1 includes four beams: beam 1411, beam 1412, beam 1413, and beam 1414. In the cell of gNB2, gNB2 includes four beams: beam 1421, beam 1422, beam 1423, and beam 1424. The uplink transmission of beam 1411 and the downlink transmission of beam 1424 may cause cross-link interference. In this scenario, the interaction between gNB1 and gNB2 is shown in FIG15 .

[0304] S1501. gNB1 transmits a first request message to gNB2.

[0305] The first request message includes the priority information of the base station in each beam direction, and the priority indicates that the transmission of gNB1 in the beam direction Beam1 has a high priority.

[0306] S1502. gNB1 transmits a first response message to gNB2.

[0307] The first response message includes an acknowledgement message, wherein the acknowledgement message may indicate an acknowledgement (ACK) or a negative acknowledgement (NACK).

[0308] When gNB2's transmission in beam direction Beam4 is low priority, gNB2 can transmit an ACK for Beam1, allowing gNB1 to transmit in that direction. gNB2 does not schedule or configure uplink transmission for interference avoidance.

[0309] If gNB2's transmission in beam direction Beam4 is prioritized, it can transmit a NACK for Beam1, disallowing the request to avoid gNB1's Beam1. Optionally, gNB2 can transmit a second request message, providing priority information within the time-frequency resources, requesting gNB1 to mitigate cross-link interference through time-frequency scheduling.

[0310] S1503. gNB1 may send a second response message.

[0311] The second response message is a confirmation message of the second request message, and may be ACK or NACK.

[0312] Based on the scenario shown in Figure 14, transmission avoidance is performed based on beams, i.e., spatial resources. In practical applications, transmission avoidance can also be performed based on time domain resources, frequency domain resources, or time-frequency resources.

[0313] Figure 15 shows an optional process of the wireless communication method proposed in an embodiment of the present application, wherein the interference suppression strategy can be formulated based on the interaction results of the request message and priority information, thereby seeking the optimal scheduling method through information interaction.

[0314] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all fall within the scope of protection of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will no longer describe the various possible combinations separately. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the idea of ​​the present application, they should also be regarded as the contents disclosed in the present application. For another example, under the premise of no conflict, the various embodiments and / or the technical features in each embodiment described in the present application can be arbitrarily combined with the prior art, and the technical solution obtained after the combination should also fall within the scope of protection of the present application.

[0315] It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not imply a precedence in the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. In addition, in the embodiments of the present application, the terms "downlink," "uplink," and "sidelink" are used to indicate the transmission direction of signals or data, where "downlink" is used to indicate the first direction of transmission of signals or data from a site to a user equipment in a cell, "uplink" is used to indicate the second direction of transmission of signals or data from a user equipment in a cell to a site, and "sidelink" is used to indicate the third direction of transmission of signals or data from user equipment 1 to user equipment 2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiments of the present application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships can exist. Specifically, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0316] FIG16 is a schematic diagram of the structure of a first base station provided in an embodiment of the present application. As shown in FIG16 , the first base station 1600 includes:

[0317] The first communication unit 1601 is configured to send a first message to the second base station, where the first message includes first information and / or first priority information, where the first information is used to indicate that the first base station requests the second base station not to perform downlink transmission on the first physical resource, and the first priority information is used to indicate the priority of the first physical resource on the first base station side;

[0318] There is cross-link interference between the first base station and the second base station on the first physical resource, and the first base station is the interfered base station in the cross-link interference, and the second base station is the interfering base station in the cross-link interference.

[0319] In some embodiments, the first information is further used to instruct the first base station to request the second base station not to perform uplink transmission on the first physical resource.

[0320] In some embodiments, the first priority information is related to one or more of the following carried by the first base station on the first physical resource:

[0321] Service type, transmission direction, number of transmitting users and amount of transmitted data.

[0322] In some embodiments, the first priority information indicates a high priority or a low priority; or,

[0323] The priority of the first physical resource indicated by the first priority information on the first base station side is higher or lower than the priority of the first physical resource on the second base station side.

[0324] In some embodiments, if the first message includes the first priority information, the first priority information indicates a high priority, or the first priority information indicates that the priority of the first physical resource on the first base station side is higher than the priority of the first physical resource on the second base station side, then the first priority information is used to indicate that the first base station requests the second base station not to perform downlink transmission on the first physical resource.

[0325] In some embodiments, if the first message includes the first priority information, the first priority information indicates a low priority, or the priority of the first physical resource indicated by the first priority information on the first base station side is lower than the priority of the first physical resource on the second base station side, then the first priority information is used to indicate the first base station to allow the second base station to perform downlink transmission on the first physical resource.

[0326] In some embodiments, the first physical resource includes one of the following:

[0327] one or more time domain resources;

[0328] one or more frequency domain resources;

[0329] one or more time-frequency resources;

[0330] One or more airspace resources.

[0331] In some embodiments, the transmission behavior of the first message is periodic or aperiodic.

[0332] In some embodiments, the first communication unit 1601 is further configured to receive a second message sent by the second base station, where the second message is used to respond to the first message.

[0333] In some embodiments, the second message is used to indicate one of the following:

[0334] The second base station allows the first physical resource or part of the first physical resource not to perform downlink transmission;

[0335] The second base station does not allow the first physical resource or part of the first physical resource to not perform downlink transmission.

[0336] In some embodiments, the transmission behavior of the second message is periodic or aperiodic.

[0337] In some embodiments, the first base station 1600 further includes:

[0338] The first determination unit is configured to determine whether the second base station allows or does not allow downlink transmission on the first physical resource if no second message is received within a first time period after sending the first message, and the second message is used to respond to the first message.

[0339] In some embodiments, the first communication unit 1601 is further configured to receive a third message sent by the second base station, the third message including second information and / or second priority information, the second information being used to indicate that the second base station requests the first base station to perform uplink transmission on the second physical resource, and the second priority information being used to indicate the priority of the second physical resource on the second base station side.

[0340] In some embodiments, the third message is received when the first base station receives a second message in response to the first message, and the second message indicates that the second base station does not allow the first physical resource or part of the first physical resource to not be downlink transmitted.

[0341] In some embodiments, the second priority information is related to one or more of the following carried by the second base station on the second physical resource:

[0342] Service type, transmission direction, number of transmitting users and amount of transmitted data.

[0343] In some embodiments,

[0344] The second priority information indicates a high priority or a low priority;

[0345] The priority of the second physical resource indicated by the second priority information on the second base station side is higher or lower than the priority of the second physical resource on the first base station side.

[0346] In some embodiments, if the third message includes the second priority information, the second priority information indicates a high priority, or the priority of the second physical resource indicated by the second priority information on the second base station side is higher than the priority of the second physical resource on the first base station side, then the second priority information is used to indicate that the second base station requests the first base station not to perform uplink transmission on the second physical resource.

[0347] In some embodiments, if the third message includes the second priority information, the second priority information indicates a low priority, or the priority of the second physical resource indicated by the second priority information on the second base station side is lower than the priority of the second physical resource on the first base station side, then the second priority information is used to indicate the second base station to allow the first base station to perform uplink transmission on the second physical resource.

[0348] In some embodiments, the second physical resource includes one of the following:

[0349] one or more time domain resources;

[0350] one or more frequency domain resources;

[0351] one or more time-frequency resources;

[0352] One or more airspace resources.

[0353] In some embodiments, the transmission behavior of the third message is periodic or aperiodic.

[0354] In some embodiments, the first communication unit 1601 is further configured to send a fourth message to the second base station, where the fourth message is used to respond to the third message.

[0355] In some embodiments, the first communication unit 1601 is further configured to not send a fourth message to the second base station in response to the third message if the first base station allows or does not allow uplink transmission on the second physical resource.

[0356] FIG17 is a schematic diagram of the structure of a second base station provided in an embodiment of the present application. As shown in FIG17 , the second base station 1700 includes:

[0357] The second communication unit 1701 is configured to receive a first message sent by a first base station, where the first message includes first information and / or first priority information, where the first information is used to indicate that the first base station requests the second base station not to perform downlink transmission on the first physical resource, and the first priority information is used to indicate the priority of the first physical resource on the first base station side;

[0358] There is cross-link interference between the first base station and the second base station on the first physical resource, and the first base station is the interfered base station in the cross-link interference, and the second base station is the interfering base station in the cross-link interference.

[0359] In some embodiments, the first information is further used to instruct the first base station to request the second base station not to perform uplink transmission on the first physical resource.

[0360] In some embodiments, the first priority information is related to one or more of the following carried by the first base station on the first physical resource:

[0361] Service type, transmission direction, number of transmitting users and amount of transmitted data.

[0362] In some embodiments,

[0363] The first priority information indicates a high priority or a low priority; or,

[0364] The priority of the first physical resource indicated by the first priority information on the first base station side is higher or lower than the priority of the first physical resource on the second base station side.

[0365] In some embodiments, if the first message includes the first priority information, the first priority information indicates a high priority, or the first priority information indicates that the priority of the first physical resource on the first base station side is higher than the priority of the first physical resource on the second base station side, then the first priority information is used to indicate that the first base station requests the second base station not to perform downlink transmission on the first physical resource.

[0366] In some embodiments, if the first message includes the first priority information, the first priority information indicates a low priority, or the priority of the first physical resource indicated by the first priority information on the first base station side is lower than the priority of the first physical resource on the second base station side, then the first priority information is used to indicate the first base station to allow the second base station to perform downlink transmission on the first physical resource.

[0367] In some embodiments, the first physical resource includes one of the following:

[0368] one or more time domain resources;

[0369] one or more frequency domain resources;

[0370] one or more time-frequency resources;

[0371] One or more airspace resources.

[0372] In some embodiments, the transmission behavior of the first message is periodic or aperiodic.

[0373] In some embodiments, the second communication unit 1701 is further configured to send a second message to the first base station, where the second message is used to respond to the first message.

[0374] In some embodiments, the second message is used to indicate one of the following:

[0375] The second base station allows the first physical resource or part of the first physical resource not to perform downlink transmission;

[0376] The second base station does not allow the first physical resource or part of the first physical resource to not perform downlink transmission.

[0377] In some embodiments, the transmission behavior of the second message is periodic or aperiodic.

[0378] In some embodiments, if the second base station allows or does not allow downlink transmission on the first physical resource, a second message is not sent to the first base station, and the second message is used to respond to the first message.

[0379] In some embodiments, the second communication unit 1701 is further configured to send a third message to the first base station, wherein the third message includes second information and / or second priority information, wherein the second information is used to indicate that the second base station requests the first base station to perform uplink transmission on the second physical resource, and the second priority information is used to indicate the priority of the second physical resource on the second base station side.

[0380] In some embodiments, the third message is received when the first base station receives a second message in response to the first message, and the second message indicates that the second base station does not allow the first physical resource or part of the first physical resource to not be downlink transmitted.

[0381] In some embodiments, the second priority information is related to one or more of the following carried by the second base station on the second physical resource:

[0382] Service type, transmission direction, number of transmitting users and amount of transmitted data.

[0383] In some embodiments, the second priority information indicates a high priority or a low priority;

[0384] The priority of the second physical resource indicated by the second priority information on the second base station side is higher or lower than the priority of the second physical resource on the first base station side.

[0385] In some embodiments, if the third message includes the second priority information, the second priority information indicates a high priority, or the priority of the second physical resource indicated by the second priority information on the second base station side is higher than the priority of the second physical resource on the first base station side, then the second priority information is used to indicate that the second base station requests the first base station not to perform uplink transmission on the second physical resource.

[0386] In some embodiments, if the third message includes the second priority information, the second priority information indicates a low priority, or the priority of the second physical resource indicated by the second priority information on the second base station side is lower than the priority of the second physical resource on the first base station side, then the second priority information is used to indicate the second base station to allow the first base station to perform uplink transmission on the second physical resource.

[0387] In some embodiments, the second physical resource includes one of the following:

[0388] one or more time domain resources;

[0389] one or more frequency domain resources;

[0390] one or more time-frequency resources;

[0391] One or more airspace resources.

[0392] In some embodiments, the transmission behavior of the third message is periodic or aperiodic.

[0393] In some embodiments, the second communication unit 1702 is further configured to receive a fourth message sent by the first base station, where the fourth message is used to respond to the third message.

[0394] In some embodiments, the second base station 1700 further includes:

[0395] The second determination unit is configured to determine whether the first base station allows or does not allow uplink transmission on the second physical resource if no fourth message is received within a second time period after sending the third message, and the fourth message is used to respond to the third message.

[0396] The first communication unit in the first base station may be implemented by a transceiver in the first base station. The first determination unit in the first base station may be implemented by a processor in the first base station.

[0397] The second communication unit in the second base station may be implemented by a transceiver in the second base station. The second determination unit in the second base station may be implemented by a processor in the second base station.

[0398] In an embodiment of the present application, a base station may have the functions of a first base station and a second base station at the same time. At this time, the base station interacts with other base stations, and the other base stations act as the second base station or the first base station. At this time, the first communication unit and the second communication unit in the base station may be the same communication unit.

[0399] Those skilled in the art should understand that the relevant descriptions of the above-mentioned first base station and second base station in the embodiment of the present application can be understood by referring to the relevant descriptions of the wireless communication method in the embodiment of the present application.

[0400] Figure 18 is a schematic structural diagram of a communication device 1800 provided in an embodiment of the present application. The communication device can be a first base station or a second base station. The communication device 1800 shown in Figure 18 includes a processor 1810, which can call and execute a computer program from a memory to implement the method in the embodiment of the present application.

[0401] Optionally, as shown in FIG18 , the communication device 1800 may further include a memory 1820. The processor 1810 may call and execute a computer program from the memory 1820 to implement the method in the embodiment of the present application.

[0402] The memory 1820 may be a separate device independent of the processor 1810 , or may be integrated into the processor 1810 .

[0403] Optionally, as shown in FIG18 , the communication device 1800 may further include a transceiver 1830 , and the processor 1810 may control the transceiver 1830 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0404] The transceiver 1830 may include a transmitter and a receiver. The transceiver 1830 may further include an antenna, and the number of antennas may be one or more.

[0405] Optionally, the communication device 1800 may specifically be the first base station of an embodiment of the present application, and the communication device 1800 may implement the corresponding processes implemented by the first base station in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0406] Optionally, the communication device 1800 may specifically be the second base station of the embodiment of the present application, and the communication device 1800 may implement the corresponding processes implemented by the second base station in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0407] Figure 19 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1900 shown in Figure 19 includes a processor 1910, which can call and run a computer program from a memory to implement the method according to the embodiment of the present application.

[0408] Optionally, as shown in FIG19 , the chip 1900 may further include a memory 1920. The processor 1910 may call and execute a computer program from the memory 1920 to implement the method in the embodiment of the present application.

[0409] The memory 1920 may be a separate device independent of the processor 1910 , or may be integrated into the processor 1910 .

[0410] Optionally, the chip 1900 may further include an input interface 1930. The processor 1910 may control the input interface 1930 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0411] Optionally, the chip 1900 may further include an output interface 1940. The processor 1910 may control the output interface 1940 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0412] Optionally, the chip can be applied to the first base station in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the first base station in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0413] Optionally, the chip can be applied to the second base station in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the second base station in each method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0414] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0415] FIG20 is a schematic block diagram of a communication system 2000 provided in an embodiment of the present application. As shown in FIG20 , the communication system 2000 includes a first base station 2010 and a second base station 2020.

[0416] Among them, the first base station 2010 can be used to implement the corresponding functions implemented by the first base station in the above method, and the second base station 2020 can be used to implement the corresponding functions implemented by the second base station in the above method. For the sake of brevity, they will not be repeated here.

[0417] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0418] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0419] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0420] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0421] Optionally, the computer-readable storage medium can be applied to the first base station in the embodiment of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the first base station in the various methods of the embodiment of the present application. For the sake of brevity, they are not repeated here.

[0422] Optionally, the computer-readable storage medium can be applied to the second base station in the embodiment of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the second base station in the various methods of the embodiment of the present application. For the sake of brevity, they are not repeated here.

[0423] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0424] Optionally, the computer program product can be applied to the first base station in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the first base station in the various methods of the embodiment of the present application. For the sake of brevity, they are not repeated here.

[0425] Optionally, the computer program product can be applied to the second base station in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the second base station in the various methods of the embodiment of the present application. For the sake of brevity, they are not repeated here.

[0426] The embodiment of the present application also provides a computer program.

[0427] Optionally, the computer program can be applied to the first base station in the embodiment of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the first base station in the various methods of the embodiment of the present application. For the sake of brevity, they are not repeated here.

[0428] Optionally, the computer program can be applied to the second base station in the embodiment of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the second base station in the various methods of the embodiment of the present application. For the sake of brevity, they are not repeated here.

[0429] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0430] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0431] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0432] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0433] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0434] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0435] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, the method comprising: The first base station sends a first message to the second base station, where the first message includes first information and / or first priority information, where the first information is used to indicate that the first base station requests the second base station not to perform downlink transmission on a first physical resource, and the first priority information is used to indicate a priority of the first physical resource on the first base station side. There is cross-link interference between the first base station and the second base station on the first physical resource, and the first base station is the interfered base station in the cross-link interference, and the second base station is the interfering base station in the cross-link interference.

2. The method according to claim 1, wherein The first information is further used to instruct the first base station to request the second base station not to perform uplink transmission on the first physical resource.

3. The method according to claim 1 or 2, wherein: The first priority information is related to one or more of the following carried by the first base station on the first physical resource: Service type, transmission direction, number of transmitting users and amount of transmitted data.

4. The method according to any one of claims 1 to 3, wherein: The first priority information indicates a high priority or a low priority; or, The priority of the first physical resource indicated by the first priority information on the first base station side is higher or lower than the priority of the first physical resource on the second base station side.

5. The method according to any one of claims 1 to 4, wherein: If the first message includes the first priority information, the first priority information indicates a high priority, or the first priority information indicates that the priority of the first physical resource on the first base station side is higher than the priority of the first physical resource on the second base station side, then the first priority information is used to indicate that the first base station requests the second base station not to perform downlink transmission on the first physical resource.

6. The method according to any one of claims 1 to 4, wherein: If the first message includes the first priority information, the first priority information indicates a low priority, or the priority of the first physical resource indicated by the first priority information on the first base station side is lower than the priority of the first physical resource on the second base station side, then the first priority information is used to indicate the first base station to allow the second base station to perform downlink transmission on the first physical resource.

7. The method according to any one of claims 1 to 6, wherein: The first physical resource includes one of the following: one or more time domain resources; one or more frequency domain resources; one or more time-frequency resources; One or more airspace resources.

8. The method according to claims 1 to 7, wherein The transmission behavior of the first message is periodic or aperiodic.

9. The method according to any one of claims 1 to 8, wherein: The method further comprises: The first base station receives a second message sent by the second base station, where the second message is used to respond to the first message.

10. The method according to claim 9, wherein: The second message is used to indicate one of the following: The second base station allows the first physical resource or part of the first physical resource not to perform downlink transmission; The second base station does not allow the first physical resource or part of the first physical resource to not perform downlink transmission.

11. The method according to claim 9 or 10, wherein: The transmission behavior of the second message is periodic or aperiodic.

12. The method according to any one of claims 1 to 11, wherein: The method further comprises: If the first base station does not receive a second message within a first time period after sending the first message, it determines whether the second base station allows or does not allow downlink transmission on the first physical resource, and the second message is used to respond to the first message.

13. The method according to any one of claims 1 to 12, wherein: The method further comprises: The first base station receives a third message sent by the second base station, where the third message includes second information and / or second priority information, where the second information is used to indicate that the second base station requests the first base station to perform uplink transmission on a second physical resource, and the second priority information is used to indicate the priority of the second physical resource on the second base station side.

14. The method according to claim 13, wherein: The third message is received when the first base station receives a second message in response to the first message, and the second message indicates that the second base station does not allow the first physical resource or part of the first physical resource to not perform downlink transmission.

15. The method according to claim 13 or 14, wherein: The second priority information is related to one or more of the following carried by the second base station on the second physical resource: Service type, transmission direction, number of transmitting users and amount of transmitted data.

16. The method according to any one of claims 13 to 15, wherein: The second priority information indicates a high priority or a low priority; The priority of the second physical resource indicated by the second priority information on the second base station side is higher or lower than the priority of the second physical resource on the first base station side.

17. The method according to any one of claims 13 to 16, wherein: If the third message includes the second priority information, the second priority information indicates a high priority, or the priority of the second physical resource indicated by the second priority information on the second base station side is higher than the priority of the second physical resource on the first base station side, then the second priority information is used to indicate that the second base station requests the first base station not to perform uplink transmission on the second physical resource.

18. The method according to any one of claims 13 to 16, wherein: If the third message includes the second priority information, the second priority information indicates a low priority, or the priority of the second physical resource indicated by the second priority information on the second base station side is lower than the priority of the second physical resource on the first base station side, then the second priority information is used to instruct the second base station to allow the first base station to perform uplink transmission on the second physical resource.

19. The method according to any one of claims 13 to 18, wherein: The second physical resource includes one of the following: one or more time domain resources; one or more frequency domain resources; one or more time-frequency resources; One or more airspace resources.

20. The method according to any one of claims 13 to 19, wherein The transmission behavior of the third message is periodic or aperiodic.

21. The method according to any one of claims 13 to 20, wherein: The method further comprises: The first base station sends a fourth message to the second base station, where the fourth message is used to respond to the third message.

22. The method according to any one of claims 13 to 20, wherein: In a case where the first base station allows or does not allow uplink transmission on the second physical resource, the first base station does not send a fourth message to the second base station, where the fourth message is used to respond to the third message.

23. A wireless communication method, the method comprising: The second base station receives a first message sent by the first base station, where the first message includes first information and / or first priority information, where the first information is used to indicate that the first base station requests the second base station not to perform downlink transmission on the first physical resource, and the first priority information is used to indicate a priority of the first physical resource on the first base station side. There is cross-link interference between the first base station and the second base station on the first physical resource, and the first base station is the interfered base station in the cross-link interference, and the second base station is the interfering base station in the cross-link interference.

24. The method according to claim 23, wherein The first information is further used to instruct the first base station to request the second base station not to perform uplink transmission on the first physical resource.

25. The method according to claim 23 or 24, wherein The first priority information is related to one or more of the following carried by the first base station on the first physical resource: Service type, transmission direction, number of transmitting users and amount of transmitted data.

26. The method according to any one of claims 23 to 25, wherein The first priority information indicates a high priority or a low priority; or, The priority of the first physical resource indicated by the first priority information on the first base station side is higher or lower than the priority of the first physical resource on the second base station side.

27. The method according to any one of claims 23 to 26, wherein: If the first message includes the first priority information, the first priority information indicates a high priority, or the first priority information indicates that the priority of the first physical resource on the first base station side is higher than the priority of the first physical resource on the second base station side, then the first priority information is used to indicate that the first base station requests the second base station not to perform downlink transmission on the first physical resource.

28. The method according to any one of claims 23 to 26, wherein: If the first message includes the first priority information, the first priority information indicates a low priority, or the priority of the first physical resource indicated by the first priority information on the first base station side is lower than the priority of the first physical resource on the second base station side, then the first priority information is used to indicate the first base station to allow the second base station to perform downlink transmission on the first physical resource.

29. The method according to any one of claims 23 to 28, wherein The first physical resource includes one of the following: one or more time domain resources; one or more frequency domain resources; one or more time-frequency resources; One or more airspace resources.

30. The method according to claims 23 to 29, wherein The transmission behavior of the first message is periodic or aperiodic.

31. The method according to any one of claims 23 to 30, wherein The method further comprises: The second base station sends a second message to the first base station, where the second message is used to respond to the first message.

32. The method according to claim 31, wherein The second message is used to indicate one of the following: The second base station allows the first physical resource or part of the first physical resource not to perform downlink transmission; The second base station does not allow the first physical resource or part of the first physical resource to not perform downlink transmission.

33. The method according to claim 31 or 32, wherein The transmission behavior of the second message is periodic or aperiodic.

34. The method according to any one of claims 23 to 33, wherein If the second base station allows or does not allow downlink transmission on the first physical resource, the second base station does not send a second message to the first base station, where the second message is used to respond to the first message.

35. The method according to any one of claims 23 to 34, wherein The method further comprises: The second base station sends a third message to the first base station, and the third message includes second information and / or second priority information. The second information is used to indicate that the second base station requests the first base station to perform uplink transmission on the second physical resource, and the second priority information is used to indicate the priority of the second physical resource on the second base station side.

36. The method according to claim 35, wherein: The third message is received when the first base station receives a second message in response to the first message, and the second message indicates that the second base station does not allow the first physical resource or part of the first physical resource to not perform downlink transmission.

37. The method according to claim 35 or 36, wherein The second priority information is related to one or more of the following carried by the second base station on the second physical resource: Service type, transmission direction, number of transmitting users and amount of transmitted data.

38. The method according to any one of claims 35 to 37, wherein The second priority information indicates a high priority or a low priority; The priority of the second physical resource indicated by the second priority information on the second base station side is higher or lower than the priority of the second physical resource on the first base station side.

39. The method according to any one of claims 35 to 38, wherein If the third message includes the second priority information, the second priority information indicates a high priority, or the priority of the second physical resource indicated by the second priority information on the second base station side is higher than the priority of the second physical resource on the first base station side, then the second priority information is used to indicate that the second base station requests the first base station not to perform uplink transmission on the second physical resource.

40. The method according to any one of claims 35 to 38, wherein If the third message includes the second priority information, the second priority information indicates a low priority, or the priority of the second physical resource indicated by the second priority information on the second base station side is lower than the priority of the second physical resource on the first base station side, then the second priority information is used to instruct the second base station to allow the first base station to perform uplink transmission on the second physical resource.

41. The method according to any one of claims 35 to 40, wherein The second physical resource includes one of the following: one or more time domain resources; one or more frequency domain resources; one or more time-frequency resources; One or more airspace resources.

42. The method according to any one of claims 35 to 41, wherein The transmission behavior of the third message is periodic or aperiodic.

43. The method according to any one of claims 35 to 42, wherein: The method further comprises: The second base station receives a fourth message sent by the first base station, where the fourth message is used to respond to the third message.

44. The method according to any one of claims 35 to 42, wherein The method further comprises: If the second base station does not receive a fourth message within a second time period after sending the third message, it determines whether the first base station allows or does not allow uplink transmission on the second physical resource, and the fourth message is used to respond to the third message.

45. A first base station, comprising: A first communication unit is configured to send a first message to a second base station, where the first message includes first information and / or first priority information, where the first information is used to indicate that the first base station requests the second base station not to perform downlink transmission on a first physical resource, and the first priority information is used to indicate a priority of the first physical resource on the first base station side; There is cross-link interference between the first base station and the second base station on the first physical resource, and the first base station is the interfered base station in the cross-link interference, and the second base station is the interfering base station in the cross-link interference.

46. ​​A second base station, comprising: a second communication unit configured to receive a first message sent by a first base station, where the first message includes first information and / or first priority information, where the first information is used to indicate that the first base station requests the second base station not to perform downlink transmission on the first physical resource, and the first priority information is used to indicate a priority of the first physical resource on the first base station side; There is cross-link interference between the first base station and the second base station on the first physical resource, and the first base station is the interfered base station in the cross-link interference, and the second base station is the interfering base station in the cross-link interference.

47. A communication device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory, and execute the method according to any one of claims 1 to 22, or execute the method according to any one of claims 23 to 44.

48. A chip comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 22, or executes the method according to any one of claims 23 to 44.

49. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 22, or the method according to any one of claims 23 to 44.

50. A computer program product comprising computer program instructions, the computer program instructions causing a computer to execute the method according to any one of claims 1 to 22, or the method according to any one of claims 23 to 44.

51. A computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 22, or the method according to any one of claims 23 to 44.

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