Wireless communication device and wireless communication method for dynamic / flexible TDD and / or SBFD operation coordinated scheduling

Abstract

The present application discloses a time-frequency resource coordinated scheduling method for dynamic / flexible time division duplex (TDD) operation and / or sub-band full duplex (SBFD) operation, comprising: coordinating and scheduling the dynamic / flexible TDD and / or SBFD operation in the same time slot / symbol, at least two adjacent base stations exchanging related scheduling information with each other, where the related scheduling information comprises a downlink, a downlink, a downlink, a downlink, a downlink, a downlink, a downlink, a downlink, a downlink, a downlink, a downlink, a downlink, and a downlink. The initial position and number of DL and / or uplink (UL) time slot formats, the initial position and number of resource blocks (RBs) of DL and / or UL sub-bands, and / or the time window allocated to the dynamic / flexible TDD and / or SBFD operation, and / or the time window allocated to the dynamic / flexible TDD and / or SBFD operation, and / or the initial position and number of resource blocks (RBs) of the DL and / or UL sub-bands, and / or the initial position and number of resource blocks (RBs) of the DL and / or UL sub-bands; and performing scheduling adaptation by the at least two adjacent base stations according to the related scheduling information.

Description

Technical Field

[0001] The present application relates to the field of wireless communication systems, and more specifically to wireless communication devices and wireless communication methods for dynamic / flexible time division duplex (TDD) and / or sub-band full duplex (SBFD) operations, particularly in 5G NR (new radio) communication systems. The present application focuses on the coordinated scheduling of time-frequency resources between adjacent base stations, which can be applied to implement dynamic / flexible TDD and SBFD operations in the same time slot / symbol. In addition, the present application also discusses spatial domain coordination applicable to dynamic / flexible TDD operations and SBFD operations. Background Art

[0002] The diverse usage scenarios and explosive growth in the number of user equipment (UE) in next-generation wireless communication systems have led to a sharp increase in data traffic, which has put forward higher requirements for spectrum efficiency. In order to meet the demand for high spectrum efficiency, TDD systems are widely used in commercial NR deployments. TDD systems use a single spectrum (frequency band) for downlink (DL) and uplink (UL) communications in different time slots, which can more efficiently utilize the available spectrum compared to frequency division duplex (FDD) systems.

[0003] In traditional TDD systems, time domain resources are allocated between DL, UL, and flexible time slots / symbols, where flexible time slots / symbols can be used as a guard period for DL, UL, or DL-UL switching. In traditional TDD, the limited time allocated for UL leads to reduced coverage, increased latency, and reduced capacity. To improve the limitations of traditional TDD operation, the 3GPP RAN working group approved a study project in Release 18 (Rel-18) [1] that focuses on the feasibility of simultaneous DL and UL operation, so-called full-duplex, and more specifically, sub-band non-overlapping full-duplex operation within the traditional TDD frequency band. In SBFD operation, the gNB operates in full-duplex mode, that is, the gNB can perform DL and UL transmissions simultaneously, while the UE operates in half-duplex mode. This study project specifies RAN1 goals for sub-band non-overlapping full-duplex and dynamic / flexible TDD operation.

[0004] In addition, the study item [1] also mentions studying the potential enhancement of dynamic / flexible TDD, because in 5G cellular networks, there may be both legacy UEs using dynamic / flexible TDD and Rel-18 UEs using dynamic / flexible TDD or SBFD operation. This situation where legacy UEs and Rel-18 UEs are served by neighboring base stations at the same time may cause co-channel cross-link interference (CLI) from gNB to gNB, UE to UE, UE to gNB, and gNB to UE, such as Figure 1 and Figure 2 As shown, Figure 1 CLI analysis showing dynamic / flexible TDD (DL) operation and SBFD operation, Figure 2 The CLI analysis of dynamic / flexible TDD (UL) operation and SBFD operation is shown. In addition, when there are both legacy UEs and Rel-18 UEs within the coverage of a serving base station, problems may also be faced in the scheduling of time-frequency resources for DL ​​or UL transmission. Therefore, in order to solve the CLI problem of gNB-to-gNB, UE-to-UE, gNB-to-UE and UE-to-gNB between legacy base stations and base stations supporting SBFD or between legacy UEs and Rel-18 UEs, an idea related to coordinated scheduling of time-frequency resources was discussed in the 3GPP RAN1#110 meeting, and some agreements were reached. The agreement studies the feasibility and potential benefits of coordinated scheduling of time-frequency resources between adjacent gNBs, focusing on CLI processing specific to dynamic / flexible TDD or CLI processing common to dynamic / flexible TDD and SBFD. The research content at least includes: detailed information on coordinated scheduling of time-frequency resources and / or the exchange method of related information.

[0005] Regarding the coordinated scheduling of time-frequency resources and spatial domain coordination between gNBs, the details of the coordination of time-frequency resources and spatial domains for handling gNB-to-gNB CLI and UE-to-UE CLI are still under discussion, and there is no specific solution to solve this problem. In addition, in the case where both legacy UEs and Rel-18 UEs exist under the same base station, the legacy UEs may use dynamic / flexible TDD, while the Rel-18 UEs may use SBFD operation, which may face problems in scheduling in the same time slot / symbol.

[0006] Therefore, there is a need for a wireless communication device and a wireless communication method for dynamic / flexible time division duplex (TDD) and / or sub-band full duplex (SBFD) operation to study the coordinated scheduling of time-frequency resources and spatial domain coordination between gNBs, so as to solve the CLI problems from gNB to gNB and from UE to UE. Summary of the invention

[0007] The purpose of this application is to propose a wireless communication device and a wireless communication method for dynamic / flexible time division duplex (TDD) and / or sub-band full duplex (SBFD) operation to study the coordinated scheduling of time-frequency resources and spatial domain coordination between gNBs, thereby solving the CLI problems from gNB to gNB and from UE to UE.

[0008] In the first aspect of the present application, a method for coordinated scheduling of time-frequency resources for dynamic / flexible time division duplex (TDD) operation and / or sub-band full duplex (SBFD) operation includes: coordinating scheduling of dynamic / flexible TDD and / or SBFD operations in the same time slot / symbol, at least two adjacent base stations exchanging relevant scheduling information with each other, wherein the relevant scheduling information includes the starting position and number of downlink (DL) and / or uplink (UL) time slot formats, the starting position and number of resource blocks (RB) of DL and / or UL subbands, and / or the time window allocated to the dynamic / flexible TDD and / or SBFD operations; and the at least two adjacent base stations perform scheduling adaptation according to the relevant scheduling information.

[0009] In a second aspect of the present application, a base station includes a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured to execute the above method.

[0010] In a third aspect of the present application, a non-transitory machine-readable storage medium stores instructions thereon, and when a computer executes the instructions, the instructions cause the computer to execute the above method.

[0011] In a fourth aspect of the present application, a chip includes a processor configured to call and run a computer program stored in a memory so that a device equipped with the chip executes the above method.

[0012] In a fifth aspect of the present application, a computer-readable storage medium stores a computer program, wherein the computer program enables a computer to execute the above method.

[0013] In a sixth aspect of the present application, a computer program product comprises a computer program, wherein the computer program enables a computer to execute the above method.

[0014] In a seventh aspect of the present application, a computer program is provided, wherein the computer program enables a computer to execute the above method. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or related technologies, the following briefly introduces the drawings to be described in the embodiments. Obviously, the drawings are only some embodiments of the present application, and ordinary technicians in this field can obtain other drawings based on these drawings without paying any price.

[0016] Figure 1 is a diagram illustrating an example of CLI analysis of dynamic / flexible TDD (DL) operation and SBFD operation.

[0017] Figure 2 is a diagram illustrating an example of CLI analysis for dynamic / flexible TDD (UL) operation and SBFD operation.

[0018] Figure 3 It is a block diagram showing the communication of a base station (such as a gNB) in a communication network system according to an embodiment of the present application.

[0019] Figure 4 It is a flowchart showing a method for coordinated scheduling of time-frequency resources for dynamic / flexible time division duplex (TDD) and / or sub-band full duplex (SBFD) operations according to an embodiment of the present application.

[0020] Figure 5 It is a schematic diagram showing an example of dynamic / flexible TDD of gNB1 and SBFD operation of gNB2 in scenario 1 according to an embodiment of the present application.

[0021] Figure 6 It is a schematic diagram showing an example of scheduling adaptation of dynamic / flexible TDD (DL) operation of gNB1 and SBFD operation of gNB2 according to an embodiment of the present application.

[0022] Figure 7 It is a schematic diagram showing an example of scheduling adaptation of dynamic / flexible TDD (UL) operation of gNB1 and SBFD operation of gNB2 according to an embodiment of the present application.

[0023] Figure 8 It is a schematic diagram showing an example in which both gNB1 and gNB2 perform dynamic / flexible TDD and SBFD operations in scenario 2 according to an embodiment of the present application.

[0024] Fig. 9 It is a schematic diagram showing an example of scheduling adaptation of dynamic / flexible TDD (DL) operation and SBFD operation in the same direction between gNB1 and gNB2 according to an embodiment of the present application.

[0025] Fig.10It is a schematic diagram showing an example of scheduling adaptation of dynamic / flexible TDD (DL-UL) operations and SBFD operations in different directions between gNB1 and gNB2 according to an embodiment of the present application.

[0026] Fig.11 It is a schematic diagram showing an example of dynamic / flexible TDD and SBFD operations of gNB1 and SBFD operations of gNB2 in scenario 3 according to an embodiment of the present application.

[0027] Fig.12 It is a schematic diagram showing an example of scheduling adaptation of dynamic / flexible TDD (DL) operation of gNB1 and SBFD operation of gNB2 according to an embodiment of the present application.

[0028] Fig.13 It is a schematic diagram showing an example of scheduling adaptation of dynamic / flexible TDD (UL) operation of gNB1 and SBFD operation of gNB2 according to an embodiment of the present application.

[0029] Fig.14 It is a schematic diagram showing an example of a transparent silent RB according to an embodiment of the present application.

[0030] Fig.15 It is a schematic diagram showing an example of a non-transparent silent RB according to an embodiment of the present application.

[0031] Fig.16 It is a schematic diagram showing an example of a time window of dynamic / flexible TDD or SBFD operation in units of time slots according to an embodiment of the present application.

[0032] Fig.17 It is a schematic diagram showing an example of a time window of dynamic / flexible TDD or SBFD operation in units of OFDM symbols according to an embodiment of the present application.

[0033] Fig.18 It is a schematic diagram showing an example of spatial domain enhancement of dynamic / flexible TDD and SBFD operations according to an embodiment of the present application.

[0034] Fig.19 is a block diagram of a system for wireless communication according to an embodiment of the present application. DETAILED DESCRIPTION

[0035] The technical content, structural features, objectives and effects of the present application are described in detail below in conjunction with the accompanying drawings. Specifically, the terms in the embodiments of the present application are only used to describe the purpose of specific embodiments, and are not intended to limit the present application.

[0036] Some embodiments of the present application study the details for coordinated scheduling of time-frequency resources, as well as spatial domain coordination between gNBs to solve the problems of gNB-to-gNB CLI and UE-to-UE CLI. For example, some embodiments of the present application study the following problems: In a 5G NR communication system, scheduling of legacy UEs (possibly using dynamic / flexible TDD) and Rel-18 UEs (possibly using dynamic / flexible TDD or SBFD operation) in the same time slot / symbol may face the following challenges: 1. When the legacy UE and Rel-18 UE are served by the same base station, how to perform TDD operation and SBFD operation simultaneously in the same time slot / symbol. 2. When the legacy UE and Rel-18 UE are served by different base stations in the same time slot, which scheduling adaptation rules should be applied to achieve coordinated scheduling and handle gNB-to-gNB and UE-to-UE CLI. In addition, in order to achieve scheduling adaptation and coordinate in the spatial domain, what relevant information needs to be exchanged between neighboring gNBs.

[0037] Figure 3 An example of communication between base stations (such as gNB) 10 and 20 in a communication network system 40 according to an embodiment of the present application is shown. The communication network system 40 includes base stations 10 and 20. The base station 10 may include a memory 12, a transceiver 13, and a processor 11 connected to the memory 12 and the transceiver 13. The base station 20 may include a memory 22, a transceiver 23, and a processor 21 connected to the memory 22 and the transceiver 23. The processor 11 or 21 may be configured to perform the functions, processes and / or methods described herein. The layers of the wireless interface protocol may be implemented in the processor 11 or 21. The memory 12 or 22 is operatively connected to the processor 11 or 21 and stores various information to operate the processor 11 or 21. The transceiver 13 or 23 is operatively connected to the processor 11 or 21 for sending and / or receiving wireless signals.

[0038] The processor 11 or 21 may include an application-specific integrated circuit (ASIC), other chipsets, logic circuits and / or data processing devices. The memory 12 or 22 may include a read-only memory (ROM), a random access memory (RAM), flash memory, a memory card, a storage medium and / or other storage devices. The transceiver 13 or 23 may include a baseband circuit for processing radio frequency signals. When implemented in software, the techniques described herein may be implemented by modules (e.g., processes, functions, etc.) that perform the functions described herein. These modules may be stored in the memory 12 or 22 and executed by the processor 11 or 21. The memory 12 or 22 may be integrated in the processor 11 or 21, or external to the processor 11 or 21, in which case these memories may be communicatively connected to the processor 11 or 21 in various known ways.

[0039] Figure 4 A flowchart of a method 400 for coordinated scheduling of time-frequency resources for dynamic / flexible time division duplex (TDD) and / or sub-band full duplex (SBFD) operations according to an embodiment of the present application is shown. In some embodiments, the method 400 includes: step 402: coordinating scheduling of dynamic / flexible TDD and / or SBFD operations in the same time slot / symbol, at least two adjacent base stations exchanging relevant scheduling information with each other, wherein the relevant scheduling information includes the starting position and number of downlink (DL) and / or uplink (UL) time slot formats, the starting position and number of resource blocks (RB) of DL and / or UL subbands, and / or the time window allocated to the dynamic / flexible TDD and / or SBFD operations. Step 404: the at least two adjacent base stations perform scheduling adaptation according to the relevant scheduling information. In addition, the processor 11 and / or 21 is configured to execute the above method 400.

[0040] In some embodiments, the relevant scheduling information is exchanged between at least two adjacent base stations by backhaul signaling using an Xn interface or by over the air (OTA) signaling. In some embodiments, at least two adjacent base stations are configured to implement dynamic / flexible TDD operation and SBFD operation in the same time slot / symbol, respectively. In some embodiments, the relevant scheduling information shared by at least two adjacent base stations includes the starting position and number of time slots / symbols of DL and / or UL transmissions of dynamic / flexible TDD operation, and / or the starting position and number of resource blocks of DL and / or UL subbands; and / or the relevant scheduling information includes the starting position and number of time slots / symbols of DL and / or UL subbands, and / or the starting position and number of resource blocks of DL and UL subbands.

[0041] In some embodiments, a first base station among at least two adjacent base stations is configured to perform downlink (DL) transmission in the same time slot / symbol, and a second base station is configured to perform DL and UL transmission using DL and UL subbands in the same time slot / symbol, and the implementation of scheduling adaptation includes at least one of the following: the first base station is configured to silence or stop the number of RBs corresponding to the UL subband resource blocks (RBs) of at least one adjacent base station; the second base station is configured to allocate more subband resources for DL ​​subband transmission to minimize the number of silenced RBs of the first base station, wherein the silenced or stopped RBs are used for UL transmission or sounding reference signals (SRS) when at least two adjacent base stations both support dynamic / flexible TDD and SBFD operations.

[0042] In some embodiments, a first base station among at least two adjacent base stations is configured to perform uplink (UL) transmission in the same time slot / symbol, and a second base station is configured to perform DL and UL transmission for SBFD operation in the same time slot / symbol, and the implementation of scheduling adaptation includes at least one of the following: the second base station is configured to silence or stop the number of RBs corresponding to the DL subband resource blocks (RBs) of the first base station; the second base station is configured to allocate more subband resources for UL subband transmission to minimize the number of silent RBs of the first base station.

[0043] In some embodiments, at least two neighboring base stations are configured to implement dynamic / flexible TDD operation and SBFD operation simultaneously in the same flexible time slot / symbol. In some embodiments, each neighboring base station uses a time window for dynamic / flexible TDD operation and SBFD operation, and the relevant scheduling information includes: X time slots or Y orthogonal frequency division multiplexing (OFDM) symbols in a first time window, and X time slots or Y OFDM symbols in a second time window; the time window allocated to dynamic / flexible TDD operation and SBFD operation; and / or the starting position and number of DL and UL subbands in the time window allocated to SBFD operation.

[0044] In some embodiments, if at least two adjacent base stations perform dynamic / flexible TDD operation in the same transmission direction, the implementation of scheduling adaptation includes at least one of the following: the first base station is configured to allocate a first time window to dynamic / flexible TDD operation and a second time window to SBFD operation; the second base station is configured to allocate a first time window to dynamic / flexible TDD operation and a second time window to SBFD operation.

[0045] In some embodiments, if at least two adjacent base stations perform dynamic / flexible TDD operations in different transmission directions, the implementation of scheduling adaptation includes at least one of the following: the first base station is configured to allocate a first time window to dynamic / flexible TDD operation and a second time window to SBFD operation; the second base station is configured to allocate a first time window to SBFD operation and a second time window to dynamic / flexible TDD operation.

[0046] In some embodiments, the first base station is configured to allocate more subband resources to the UL direction in the second time window, and silence or stop the RB corresponding to the UL direction of the second base station in the first time window; the second base station is configured to allocate more subband resources to the DL direction in the first time window, and silence or stop the RB corresponding to the DL transmission of the first base station in the second time window.

[0047] In some embodiments, the first base station of at least two adjacent base stations is configured to implement dynamic / flexible TDD operation and SBFD operation simultaneously in the same flexible time slot / symbol, while the second base station is configured to implement SBFD operation only in the same flexible time slot / symbol. In some embodiments, the relevant scheduling information shared by at least two adjacent base stations includes: X time slots or Y symbols in the first time window, and X time slots or Y symbols in the second time window; the time window allocated to dynamic / flexible TDD operation and SBFD operation; and / or the starting position and number of DL and UL subbands in the time window allocated to SBFD operation. The relevant scheduling information may also include: the starting position and number of time slots / symbols of DL and / or UL subbands; the starting position and number of resource blocks of DL and / or UL subbands.

[0048] In some embodiments, the dynamic / flexible TDD operation of the first base station among at least two adjacent base stations is in the DL direction, and the implementation of scheduling adaptation includes at least one of the following: the first base station is configured to allocate the first time window to the dynamic / flexible TDD operation and the second time window to the SBFD operation; the first base station is configured to silence or stop the number of RBs corresponding to the UL subband direction of the second base station in the first time window; the second base station is configured to allocate subband resources for the DL direction. In some embodiments, the dynamic / flexible TDD operation of the first base station is in the UL direction, and the implementation of scheduling adaptation includes at least one of the following: the first base station is configured to allocate the first time window to the dynamic / flexible TDD operation and the second time window to the SBFD operation; the first base station is configured to silence or stop the number of RBs corresponding to the DL subband direction of the second base station in the first time window; the second base station is configured to allocate subband resources for the UL direction.

[0049] In some embodiments, the implementation of scheduling adaptation includes silencing or stopping resource blocks (RBs) corresponding to the transmission subband direction opposite to the second base station in dynamic / flexible TDD operation. In some embodiments, the silenced or stopped RBs are invisible / transparent to the user equipment (UE), or visible / non-transparent. In some embodiments, when the silenced or stopped RBs are invisible / transparent to the UE, the RB silencing or stopping in dynamic / flexible TDD operation is achieved through resource allocation type 1, wherein the starting RB (RB_start) of resource allocation type 1 is adjusted according to the relevant scheduling information received from the second base station.

[0050] In some embodiments, when the muted or stopped RB is visible / non-transparent to the UE, RB muting or stopping in dynamic / flexible TDD operation is achieved by resource allocation type 0, where a bitmap is used to indicate a resource block group (RBG). In some embodiments, the base station is used to configure all RBs to the UE and send an indication to notify the UE that certain RBs or resource block groups (RBGs) cannot be used for transmission. In some embodiments, the time window includes time slots / symbols to allow the first base station to perform dynamic / flexible TDD operation and / or SBFD operation, and the time window can be periodic or non-periodic. In some embodiments, the time window can be a time slot-based time window or a symbol-based time window.

[0051] In some embodiments, the slot-based time window includes a reference point and a duration, the reference point is determined by a slot-level offset from a subframe start point associated with the time window, and the duration is the number of slots for which the time window is valid. In some embodiments, the symbol-based time window includes a reference point and a duration, the reference point is determined by a symbol-level offset from a subframe start point associated with the time window, and the duration is the number of symbols for which the time window is valid. In some embodiments, the time window for dynamic / flexible TDD operation and / or SBFD operation is configured by using RRC signaling. In some embodiments, the method further includes coordination in the spatial domain, wherein the base station and at least one neighboring base station share relevant scheduling information for a service beam for DL ​​transmission and UL reception to isolate the transmission and reception beams.

[0052] Some embodiments of the present application discuss the coordinated scheduling of time-frequency resources between neighboring base stations for dynamic / flexible TDD and SBFD operations, and spatial domain coordination between neighboring gNBs, where neighboring base stations may provide services for traditional UEs and SBFD UEs in the same time slot / symbol. In addition, some embodiments of the present application focus on the situation where traditional UEs and SBFD UEs exist in the coverage of the same base station at the same time.

[0053] Some embodiments explain the details of time-frequency resource coordination scheduling for dynamic / flexible TDD and SBFD operations. Some embodiments explain the spatial domain coordination between neighboring gNBs for dynamic / flexible TDD and SBFD operations.

[0054] Time-frequency resource coordination and scheduling:

[0055] The embodiments of the present application introduce the details of coordinated scheduling of time-frequency resources in detail so as to realize dynamic / flexible TDD and SBFD operations in the same time slot and process gNB to gNB CLI and UE to UE CLI. In the coordinated scheduling of dynamic / flexible TDD and SBFD operations, two or more adjacent base stations exchange relevant scheduling information with each other, such as the starting position and number of DL / UL time slot formats, the starting position and number of RBs of DL or UL subbands, and the time window allocated to dynamic / flexible TDD or SBFD operations, and implement scheduling adaptation according to the relevant scheduling information to minimize or avoid gNB to gNB CLI, UE to UE CLI, gNB to UE CLI, and UE to gNB CLI before CLI occurs.

[0056] In the coordinated scheduling of dynamic / flexible TDD and SBFD operations, the time-frequency resource scheduling adaptation of dynamic / flexible TDD and SBFD operations can be adjusted according to the implementation of dynamic / flexible TDD and SBFD operations in neighboring base stations. In other words, the scheduling adaptation schemes in different scenarios may be different depending on the DL or UL transmission direction of the dynamic / flexible TDD and SBFD operations and the presence of dynamic / flexible TDD and SBFD operations in one or more base stations.

[0057] Therefore, the embodiments of the present application discuss the following scenarios and propose several coordinated scheduling adaptation schemes to reduce or avoid gNB to gNB CLI, UE to UE CLI, gNB to UE CLI and UE to gNB CLI.

[0058] Scenario 1:

[0059] Figure 5 It is a schematic diagram showing an example of dynamic / flexible TDD of gNB1 and SBFD operation of gNB2 in scenario 1 according to an embodiment of the present application. Figure 5 In some embodiments, it is assumed that there are two adjacent gNBs in scenario 1, such as Figure 5 As shown, gNB1 performs dynamic / flexible TDD operation in the same time slot, while gNB2 performs SBFD operation in the same time slot, i.e., time slots n, n+1, n+2, and n+3. It should be noted that the time slots / symbols considered in some embodiments of the present application are flexible time slots / symbols, which can be used for dynamic / flexible TDD operation (DL or UL direction) and / or SBFD operation.

[0060] In order to coordinate the scheduling of time and frequency resources for dynamic / flexible TDD and SBFD operations in scenario 1, the following relevant scheduling information needs to be exchanged between gNB1 and gNB2 through backhaul signaling or over-the-air (OTA) signaling using the Xn interface:

[0061] Information shared between gNB1 and gNB2:

[0062] 1. The starting position and number of time slots for DL ​​or UL transmission for dynamic / flexible TDD.

[0063] 2. RB starting position and number for DL ​​or UL transmission of dynamic / flexible TDD.

[0064] Information shared between gNB2 and gNB1:

[0065] 1. The starting position and number of time slots of the DL or UL subband.

[0066] 2. RB starting position and number of DL and UL subbands.

[0067] Based on the exchange of relevant scheduling information, neighboring gNBs can perform scheduling adaptation according to the DL or UL direction of dynamic / flexible TDD, as described below.

[0068] Case 1:

[0069] Figure 6 The present invention is a schematic diagram showing an example of scheduling adaptation for dynamic / flexible TDD (DL) operation of gNB1 and SBFD operation of gNB2 according to an embodiment of the present invention. In case 1, gNB1 performs downlink transmission in time slots n, n+1, n+2, and n+3, while gNB2 performs downlink and uplink transmission in the same time slot through DL and UL subbands. In order to minimize or avoid CLI (cross link interference), gNB1 and gNB2 may perform Figure 6 The following schedule adaptation is shown:

[0070] gNB1 may mute or stop (according to the above method) the number of RBs corresponding to the UL subband RBs of gNB2, such as Figure 6 shown.

[0071] gNB2 can allocate more subband resources for DL ​​subband transmission to minimize the number of silent RBs of gNB1. For example, gNB2 allocates two subbands for DL ​​transmission, such as Figure 6 shown.

[0072] Note: In the case where both the UE and the base station support SBFD operation, the muted or stopped RBs can be used for UL transmission or sounding reference signal (SRS).

[0073] Case 2:

[0074] Figure 7 1 is a schematic diagram showing an example of scheduling adaptation for dynamic / flexible TDD (UL) operation of gNB1 and SBFD operation of gNB2 according to an embodiment of the present application. In case 2, gNB1 performs uplink transmission in time slots n, n+1, n+2, and n+3, while gNB2 performs downlink and uplink transmission through SBFD operation in the same time slot. In this case, gNB1 and gNB2 can perform the following scheduling adaptation:

[0075] gNB1 may mute or stop (according to the aforementioned method) the number of RBs corresponding to the DL subband RBs of gNB2, such as Figure 7 shown.

[0076] gNB2 can allocate more subband resources for UL subband transmission to minimize the number of silent RBs of gNB1. For example, gNB2 allocates two subbands for UL transmission, such as Figure 7 shown.

[0077] Scenario 2:

[0078] Figure 8 2 is a schematic diagram showing an example in which gNB1 and gNB2 both perform dynamic / flexible TDD and SBFD operations in scenario 2 according to an embodiment of the present application. In scenario 2, it is assumed that two adjacent gNBs simultaneously perform dynamic / flexible TDD and SBFD operations in the same time slots (such as time slots n, n+1, n+2, and n+3) to provide services for legacy UEs and SBFD UEs at the same time, such as Figure 8 shown.

[0079] Since in this scenario, each gNB performs dynamic / flexible TDD and SBFD operations simultaneously in flexible time slots, each gNB will use a time window for each operation (as described in the previous method). In addition, in order to coordinate the scheduling of time and frequency resources for dynamic / flexible TDD and SBFD operations, gNB1 and gNB2 can share the following related information through backhaul signaling or over-the-air signaling (OTA) using the Xn interface:

[0080] The number of X time slots or Y OFDM symbols in time window 1, and the number of X time slots or Y OFDM symbols in time window 2.

[0081] The time window assigned to each operation (i.e. which time window is assigned to which operation).

[0082] The starting position and number of DL and UL subbands in the time window allocated for SBFD operation.

[0083] Based on the exchange of the above-mentioned relevant scheduling information, gNB1 and gNB2 can perform the following scheduling adaptations for DL ​​and UL transmission directions in both gNBs according to dynamic / flexible TDD operation:

[0084] Case 1:

[0085] Fig. 9 The diagram is a schematic diagram showing an example of scheduling adaptation between gNB1 and gNB2 for dynamic / flexible TDD (DL) operation and SBFD operation in the same direction according to an embodiment of the present application. If both gNB1 and gNB2 perform dynamic / flexible TDD in the same transmission direction (such as DL direction), the following scheduling adaptation may be performed:

[0086] gNB1 allocates time window Tw1 to dynamic / flexible TDD operation and allocates time window Tw2 to SBFD operation, as shown in Fig. 9 shown.

[0087] gNB2 also allocates time window Tw1 to dynamic / flexible TDD operation and time window Tw2 to SBFD operation, as shown in Fig. 9 shown.

[0088] NOTE: This scheduling adaptation implementation is also applicable to the case where both gNB1 and gNB2 perform dynamic / flexible TDD in UL transmission direction.

[0089] Case 2:

[0090] Fig.10 The schematic diagram shows an example of scheduling adaptation between gNB1 and gNB2 for dynamic / flexible TDD (DL-UL) operation and SBFD operation in different directions according to an embodiment of the present application. If the transmission directions of dynamic / flexible TDD of gNB1 and gNB2 are different (for example, gNB1 performs dynamic / flexible TDD in the DL direction and gNB2 performs dynamic / flexible TDD in the UL direction), the alternating time windows can be allocated to dynamic / flexible TDD and SBFD operation by the following scheduling adaptation rules:

[0091] gNB1 allocates time window Tw1 to dynamic operation and time window Tw2 to SBFD operation. In addition, gNB1 allocates more subband resources (e.g., two subbands) for the UL direction in time window Tw2, and silences or stops the RBs corresponding to the UL subband direction of gNB2 in time window Tw1, as shown in FIG. Fig.10 shown.

[0092] gNB2 allocates time window Tw1 to SBFD operation and time window Tw2 to dynamic / flexible TDD operation. In addition, gNB2 allocates more subband resources (e.g., two subbands) for the DL direction in time window Tw1 and silences or stops the RBs corresponding to the DL subband direction of gNB1 in time window Tw2, as shown in FIG. Fig.10 shown.

[0093] Scenario 3:

[0094] Fig.11 is a schematic diagram showing an example of dynamic / flexible TDD and SBFD operations of gNB1 and SBFD operations of gNB2 in scenario 3 according to an embodiment of the present application. In scenario 3, it is assumed that Fig.11 Two gNBs are shown, where gNB1 performs dynamic / flexible TDD and SBFD operations simultaneously in the same timeslot / symbol. In other words, gNB1 serves both legacy UEs and SBFD UEs through timeslots n, n+1, n+2, and n+3, while gNB2 only performs SBFD operations in the same timeslots, as shown in Figure 1. Fig.11 shown.

[0095] Since gNB1 uses dynamic / flexible TDD and SBFD operations in the same time slot, gNB1 can define time window Tw1 and time window Tw2 for dynamic / flexible TDD and SBFD operations respectively. In addition, gNB1 and gNB2 need to exchange the following related scheduling information through backhaul signaling or over-the-air signaling (OTA) on the Xn interface:

[0096] Information shared between gNB1 and gNB2:

[0097] The number of X time slots or Y symbols in time window 1, and the number of X time slots or Y symbols in time window 2, and indicate which operation each time window is assigned to. For example, Tw1 is assigned to dynamic / flexible TDD operation, and Tw2 is assigned to SBFD operation.

[0098] The starting position and number of RBs of the DL and UL subbands in the time window allocated for SBFD operation (ie, Tw2 in this example).

[0099] Information shared between gNB2 and gNB1:

[0100] The starting position of the DL or UL subband and the number of slots / symbols.

[0101] The starting position and number of RBs of the DL or UL subband.

[0102] To minimize or avoid interference before CLI occurs, gNB1 and gNB2 may perform the following scheduling adaptation based on the relevant scheduling information exchange:

[0103] Case 1:

[0104] Fig.12 The diagram is a schematic diagram showing an example of scheduling adaptation for the dynamic / flexible TDD (DL) operation of gNB1 and the SBFD operation of gNB2 according to an embodiment of the present application. If the dynamic / flexible TDD operation of gNB1 is in the DL direction, gNB1 and gNB2 may perform the following scheduling adaptation:

[0105] gNB1 may allocate time window Tw1 to dynamic operation and time window Tw2 to SBFD operation. In addition, gNB1 may mute or stop the number of RBs corresponding to the UL subband direction of gNB2 in time window Tw1, such as Fig.12 shown.

[0106] gNB2 can allocate more subband resources for the DL direction, for example, allocate two DL subbands, such as Fig.12 shown.

[0107] Case 2:

[0108] Fig.13The diagram is a schematic diagram showing an example of scheduling adaptation for the dynamic / flexible TDD (UL) operation of gNB1 and the SBFD operation of gNB2 according to an embodiment of the present application. If the dynamic / flexible TDD operation of gNB1 is in the UL direction, gNB1 and gNB2 may perform the following scheduling adaptation:

[0109] 1. gNB1 may allocate time window Tw1 to dynamic / flexible TDD operation and time window Tw2 to SBFD operation (as described in the previous method). In addition, gNB1 may mute or stop the number of RBs in time window Tw1 corresponding to the DL subband direction of gNB2, as Fig.13 shown.

[0110] 2. gNB2 can allocate more subband resources for the UL direction, for example, allocate two UL subbands, such as Fig.13 shown.

[0111] To silence / stop RB:

[0112] The embodiments of the present application discuss two methods of muting resource blocks (RBs) in dynamic / flexible TDD operation, where the RBs correspond to opposite transmission subband directions of neighboring base stations. The procedure of muting RBs is applicable to all relevant embodiments of the present application.

[0113] Transparent Silent RB:

[0114] Fig.14 is a schematic diagram showing an example of transparent silent RB according to an embodiment of the present application. In this method, the silent RB is invisible / transparent to the UE, such as Fig.14 Implementation method: Silent RB is implemented through resource allocation type 1 in the current specification [TS 38.214], where the starting RB (RB_Start) of resource allocation type 1 can be adjusted according to the scheduling information received from the neighboring gNB.

[0115] For example, if the neighboring gNB uses the first four RBs (from RB0 to RB3) for transmission in the opposite direction (i.e., DL subband or UL subband), the RB_Start of resource allocation type 1 can start from RB4, such as Fig.14 shown.

[0116] Non-transparent silent RB:

[0117] In this method, the silent RBs are visible / non-transparent to the UE. In this embodiment, the gNB can configure all RBs to the UE and then send an indication to inform the UE that certain RBs or resource block groups (RBGs) are not available for transmission.

[0118] Implementation method:

[0119] Silent RBs are implemented by using resource allocation type 0 in the current specification [TS 38.214], where a bitmap is used to indicate resource block groups (RBGs). In this embodiment, silent RBs are visible to the UE.

[0120] Fig.15 is a schematic diagram showing an example of non-transparent silencing of RBs according to an embodiment of the present application. For example, if the neighboring gNB uses the first four RBs (from RB0 to RB3) for transmission in the opposite direction (i.e., DL subband or UL subband), the bitmap of resource allocation type 0 may instruct the UE to use RBs from RB4 to RBn. Similarly, the bitmap may instruct the UE to silence RB0 to RB3, prohibiting the UE from using these RBs for transmission, such as Fig.15 shown.

[0121] Time windows for dynamic / flexible TDD and SBFD operations:

[0122] Fig.16 1 is a schematic diagram showing an example of a time window for dynamic / flexible TDD or SBFD operation in units of time slots according to an embodiment of the present application. An embodiment of the present application proposes a time window operation allocated by a gNB for dynamic / flexible TDD operation and SBFD operation. The time window can be defined based on a time slot in a subframe or an OFDM symbol in a time slot. Time window based on time slots: The time window for dynamic / flexible TDD operation and / or SBFD operation can be defined based on an NR time slot in a subframe, including a reference point and a duration, such as Fig.16 shown.

[0123] The reference point of a time window is determined by the slot-level offset of the start of the subframe associated with the time window, and the duration is the number of time slots that the time window is valid for, e.g. Fig.16 As shown. The duration of the time window may include X time slots in the subframe, where X is an integer in the range of {1,2…10}. The duration of the time window (in time slots) may vary depending on the implementation scenario of dynamic / flexible TDD and / or SBFD operation in the base station. For example, the duration of a time window is 4 time slots, starting from the 2nd time slot of the subframe and offset by 2 time slots from the start of the subframe, as shown in Fig.16 shown.

[0124] Fig.171 is a schematic diagram showing an example of a time window for dynamic / flexible TDD or SBFD operation in units of OFDM symbols according to an embodiment of the present application. Symbol-based time window: Similarly, the time window for dynamic / flexible TDD and / or SBFD operation can be defined based on OFDM symbols in a time slot, including a reference point and a duration. In a symbol-based time window, the reference point is determined by an OFDM symbol-level offset from the start of the time slot associated with the time window, and the duration is the number of OFDM symbols for which the time window is valid, such as Fig.17 shown.

[0125] Similar to the slot-based time window, the duration of the symbol-level time window may include Y OFDM symbols in the slot, where Y is an integer in the range of {1,2…14}. The duration of the time window (in units of OFDM symbols) may vary depending on the implementation scenario of dynamic / flexible TDD and / or SBFD operation in the base station. For example, the duration of a time window is 5 OFDM symbols, starting from the 2nd symbol of the slot and offset by 3 symbols from the start of the slot, such as Fig.17 shown.

[0126] Time window configuration:

[0127] The time window configuration of dynamic / flexible TDD operation and / or SBFD operation can be implemented through existing RRC signaling (e.g., TDD-UL-DL-ConfigCommon and TDD-UL-DL-ConfigDedicated), or new RRC signaling can be defined to configure the time window for dynamic / flexible TDD and / or SBFD operation. In addition, the configured time window can be periodic or aperiodic.

[0128] Spatial Domain Coordination:

[0129] Fig.18 It is a schematic diagram showing an example of spatial domain enhancement of dynamic / flexible TDD and SBFD operations according to an embodiment of the present application. Fig.18 It is shown that the embodiments of the present application discuss the feasibility and potential advantages of the spatial domain coordination method for processing gNB and gNB and UE and UE CLI, which can be used for dynamic / flexible TDD, and can also be applied to SBFD and dynamic / flexible TDD at the same time. Spatial domain coordination can be applied to all scenarios mentioned in the above embodiments.

[0130] In this embodiment, adjacent gNBs may allocate different beams for DL ​​and UL transmissions and set possible isolation gaps between DL and UL beams. For example, two adjacent gNBs (possibly using TDD operation and / or SBFD operation) may allocate Rx beam n and Rx beam n+1 for UL transmissions and Tx beam n and Tx beam n+1 for DL ​​transmissions, where the Tx and Rx beams of each gNB may be different from each other. In addition, gNB1 and gNB2 may isolate UL and DL transmission beams as much as possible to separate UL and DL transmissions.

[0131] Related information exchange:

[0132] In spatial domain enhancement, neighboring gNBs need to share information about the beams allocated to DL and UL transmissions. In this way, neighboring gNBs can adjust beams according to each other, thereby reducing gNB-to-gNB and UE-to-UE CLI.

[0133] In summary, the main goal of some embodiments of the present application is to minimize or avoid CLI between gNBs and between UEs when implementing dynamic / flexible TDD and SBFD operations in the same time slot / symbol. To achieve this goal, the following solutions are proposed:

[0134] Coordinated scheduling of time-frequency resources. This method can be applied to the implementation of dynamic / flexible TDD and SBFD operations in the same time slot, and a variety of scheduling adaptation solutions are proposed according to different operation scenarios:

[0135] Scenario 1: Neighboring base stations implement dynamic / flexible TDD and SBFD operations in the same time slot.

[0136] Scenario 2: Each neighboring base station implements dynamic / flexible TDD and SBFD operations simultaneously in the same time slot.

[0137] Scenario 3: One base station implements both dynamic / flexible TDD and SBFD operations, while the neighboring base stations implement only SBFD operations.

[0138] To avoid opposite direction transmissions in neighboring gNBs and CLI in the above scenario, a resource block muting solution is proposed.

[0139] The time window containing time slots or symbols allows the gNB to perform dynamic / flexible TDD and SBFD operations simultaneously.

[0140] It is proposed that neighboring base stations share information about DL transmission and UL reception serving beams to isolate the transmission and reception beams, thereby reducing the CLI between gNBs and between UEs.

[0141] Some embodiments of the present application discuss time-frequency resource coordinated scheduling applicable to implementing dynamic / flexible TDD and SBFD operations in the same time slot / symbol, and have the following advantages.

[0142] 1. The proposed method and solution consider diverse implementation scenarios of dynamic / flexible TDD and SBFD operations in the same time slot to avoid the occurrence of CLI.

[0143] 2. The proposed methods and solutions consider the relevant information exchange between adjacent base stations according to the implementation scenario, identify the specific information that needs to be exchanged, and avoid unnecessary information exchange.

[0144] 3. The proposed method and solution support providing services to both legacy UEs and Rel-18 UEs at the same time to improve the utilization of base station resources.

[0145] Fig.19 7 is a block diagram of an exemplary wireless communication system 700 according to an embodiment of the present application. The embodiments described herein may be implemented into a system using any appropriately configured hardware and / or software. Fig.19 A system 700 is shown, which includes a radio frequency (RF) circuit 710, a baseband circuit 720, an application circuit 730, a memory / storage device 740, a display 750, a camera 760, a sensor 770, and an input / output (I / O) interface 780, which are coupled to each other at least as shown. The application circuit 730 may include circuits, such as but not limited to one or more single-core or multi-core processors. The processor may include any combination of general-purpose processors and special-purpose processors, such as a graphics processor, an application processor. The processor may be coupled to a memory / storage device and configured to execute instructions stored in the memory / storage device to enable various applications and / or operating systems to run on the system.

[0146] While the present disclosure has been described in connection with what is considered to be the most practical and preferred embodiment, it is to be understood that the present disclosure is not limited to the disclosed embodiment, but is intended to cover various arrangements made without departing from the scope of the broadest interpretation of the appended claims.

Claims

1. A time-frequency resource coordination and scheduling method for dynamic / flexible time division duplex TDD operation and / or sub-band full-duplex SBFD operation, characterized in that: include: Coordinate scheduling of dynamic / flexible TDD and / or SBFD operations in the same time slot / symbol, at least two adjacent base stations exchange relevant scheduling information with each other, wherein the relevant scheduling information includes the starting position and number of downlink DL and / or uplink UL time slot formats, the starting position and number of resource blocks RB of DL and / or UL subbands, and / or the time window allocated to the dynamic / flexible TDD and / or SBFD operations; and The at least two neighboring base stations perform scheduling adaptation according to the relevant scheduling information.

2. The method according to claim 1, characterized in that The relevant scheduling information is exchanged between the at least two neighboring base stations through backhaul signaling using an Xn interface or through over-the-air OTA signaling.

3. The method according to claim 1 or 2, characterized in that: The at least two neighboring base stations are configured to implement the dynamic / flexible TDD operation and the SBFD operation in the same time slot / symbol, respectively.

4. The method according to claim 2 or 3, characterized in that: The relevant scheduling information shared by the at least two neighboring base stations includes the starting position and number of time slots / symbols of DL and / or UL transmission of the dynamic / flexible TDD operation, and / or the starting position and number of RBs of DL and / or UL transmission of the dynamic / flexible TDD operation; and / or The related scheduling information shared by the at least two neighboring base stations includes the starting position and number of time slots / symbols of DL and / or UL subbands, and / or the starting position and number of RBs of the DL and / or UL subbands.

5. The method according to claim 4, characterized in that A first base station among the at least two neighboring base stations is configured to perform DL transmission in the same time slot / symbol, a second base station among the at least two neighboring base stations is configured to perform the DL and UL transmission using the DL and UL subbands in the same time slot / symbol, and the implementation of the scheduling adaptation includes at least one of the following: The first base station is configured to mute or stop a number of RBs corresponding to RBs of a UL subband of at least one neighboring base station; The second base station is configured to allocate more sub-band resources for DL ​​sub-band transmission to minimize the number of silent RBs of the first base station, wherein the silent or stopped RBs are used for UL transmission or sounding reference signals when at least two neighboring base stations support the dynamic / flexible TDD and SBFD operations.

6. The method according to claim 4, characterized in that A first base station among the at least two neighboring base stations is configured to perform UL transmission in the same time slot / symbol, a second base station among the at least two neighboring base stations is configured to perform DL and UL transmission for SBFD operation in the same time slot / symbol, and the implementation of the scheduling adaptation includes at least one of the following: The second base station is configured to mute or stop a number of RBs corresponding to the RBs of the DL subband of the first base station; The second base station is configured to allocate more sub-band resources for UL sub-band transmission to minimize the number of silent RBs of the first base station.

7. The method according to claim 1 or 2, characterized in that: The at least two neighboring base stations are configured to simultaneously implement the dynamic / flexible TDD operation and SBFD operation in the same flexible time slot / symbol.

8. The method according to claim 7, characterized in that Each of the at least two neighboring base stations uses a time window for the dynamic / flexible TDD operation and the SBFD operation, and the related scheduling information includes: X time slots or Y orthogonal frequency division multiplexing OFDM symbols in a first time window, and X time slots or Y OFDM symbols in a second time window; time windows allocated to the dynamic / flexible TDD operation and SBFD operation; and / or The starting position and number of RBs for DL ​​and UL subbands in the time window allocated to the SBFD operation.

9. The method according to claim 8, characterized in that If the at least two neighboring base stations perform the dynamic / flexible TDD operation in the same transmission direction, the implementation of the scheduling adaptation includes at least one of the following: The first base station of the at least two neighboring base stations is configured to allocate the first time window to the dynamic / flexible TDD operation and allocate the second time window to the SBFD operation; as well as The second base station of the at least two neighboring base stations is configured to allocate the first time window to the dynamic / flexible TDD operation and allocate the second time window to the SBFD operation.

10. The method according to claim 8, characterized in that If the at least two neighboring base stations perform the dynamic / flexible TDD operation in different transmission directions, the implementation of the scheduling adaptation includes at least one of the following: The first base station of the at least two neighboring base stations is configured to allocate the first time window to the dynamic / flexible TDD operation and allocate the second time window to the SBFD operation; as well as The second base station of the at least two neighboring base stations is configured to allocate the first time window to the SBFD operation and allocate the second time window to the dynamic / flexible TDD operation.

11. The method according to claim 10, characterized in that: The first base station is configured to allocate more sub-band resources for the DL direction in the first time window, and silence or stop the RBs corresponding to the UL sub-band direction of the second base station; and / or The second base station is configured to allocate more subband resources for the UL direction in the first time window, and to mute or stop the RBs corresponding to the DL subband direction of the first base station in the second time window.

12. The method according to claim 1 or 2, characterized in that: The first base station among the at least two neighboring base stations is configured to simultaneously implement the dynamic / flexible TDD operation and SBFD operation in the same flexible time slot / symbol, and the second base station among the at least two neighboring base stations is configured to implement the SBFD operation only in the same flexible time slot / symbol.

13. The method according to claim 12, characterized in that: The relevant scheduling information shared by the at least two neighboring base stations includes X time slots or Y symbols in the first time window, and X time slots or Y symbols in the second time window, the time windows allocated to the dynamic / flexible TDD operation and SBFD operation, and / or the starting position and number of RBs of DL and UL subbands in the time window allocated to the SBFD operation; and / or The related scheduling information shared by the at least two neighboring base stations includes the starting position and number of time slots / symbols of DL and / or UL subbands, and / or the starting position and number of RBs of the DL and UL subbands.

14. The method according to claim 13, characterized in that The dynamic / flexible TDD operation of the first base station among the at least two neighboring base stations is in a DL direction, and the implementation of the scheduling adaptation includes at least one of the following: The first base station is configured to allocate the first time window to the dynamic / flexible TDD operation and allocate the second time window to the SBFD operation; and / or The first base station is configured to mute or stop the number of RBs corresponding to the UL subband direction of the second base station in the first time window; The second base station is configured to allocate sub-band resources for a DL direction.

15. The method according to claim 13, characterized in that The dynamic / flexible TDD operation of the first base station is in the UL direction, and the implementation of the scheduling adaptation includes at least one of the following: The first base station is configured to allocate the first time window to the dynamic / flexible TDD operation and allocate the second time window to the SBFD operation; and / or The first base station is configured to mute or stop the number of RBs corresponding to the DL subband direction of the second base station in the first time window; The second base station is configured to allocate sub-band resources for a UL direction.

16. The method according to any one of claims 1 to 15, characterized in that The implementation of the scheduling adaptation includes silencing or stopping RBs corresponding to the opposite transmission subband direction of the second base station in the dynamic / flexible TDD operation.

17. The method of claim 16, wherein the muted or stopped RB is invisible / transparent or visible / non-transparent to the UE.

18. The method according to claim 17, characterized in that When the muted or stopped RB is invisible / transparent to the UE, the RB muting or stopping in the dynamic / flexible TDD operation is achieved through resource allocation type 1, wherein the starting position of the RB of the resource allocation type 1 is adjusted according to the relevant scheduling information received from the second base station.

19. The method according to claim 17, characterized in that When the muted or stopped RBs are visible / non-transparent to the UE, RB muting or stopping in the dynamic / flexible TDD operation is achieved by resource allocation type 0, where a bitmap is used to indicate the resource block group RBG.

20. The method according to claim 19, characterized in that The base station is used to configure all RBs to the UE, and send an indication to notify the UE that a certain number of RBs or resource block groups RBGs cannot be used for transmission.

21. The method according to any one of claims 1 to 20, characterized in that The time window includes time slots / symbols to allow the first base station to perform the dynamic / flexible TDD operation and / or SBFD operation, and the time window is periodic or aperiodic.

22. The method according to claim 21, characterized in that The time window includes a slot-based time window or a symbol-based time window.

23. The method according to claim 22, characterized in that The slot-based time window includes a reference point and a duration, wherein the reference point of the slot-based time window is determined by a slot-level offset of a subframe start point associated with the time window, and the duration is the number of slots in which the time window is valid.

24. The method according to claim 22, characterized in that The symbol-based time window includes a reference point and a duration, wherein the reference point of the symbol-based time window is determined by a symbol-level offset from a subframe start point associated with the time window, and the duration is the number of symbols in which the time window is valid.

25. The method according to claim 22, characterized in that The time window for the dynamic / flexible TDD operation and / or SBFD operation is configured by using RRC signaling.

26. The method according to any one of claims 1 to 25, characterized in that Also included is performing coordination in the spatial domain, wherein the base station and at least one neighboring base station share the relevant scheduling information of the service beam for DL ​​transmission and UL reception to isolate the transmission and reception beams.

27. A base station, characterized in that: include: Memory; Transceiver; as well as a processor coupled to the memory and the transceiver; Wherein, the processor is configured to execute the method of any one of claims 1 to 26.

28. A non-transitory machine-readable storage medium, characterized in that Instructions are stored thereon, and when a computer executes the instructions, the instructions cause the computer to perform the method of any one of claims 1 to 26.

29. A chip, characterized in that: include: A processor configured to call and run a computer program stored in a memory so that a device equipped with the chip executes a method according to any one of claims 1 to 26.

30. A computer-readable storage medium, characterized in that: A computer program is stored therein, wherein the computer program causes a computer to execute the method of any one of claims 1 to 26.

31. A computer program product, characterized in that Comprising a computer program, wherein the computer program causes a computer to perform the method of any one of claims 1 to 26.

32. A computer program, characterized in that The computer program causes a computer to execute the method of any one of claims 1 to 26.

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