Interference management method, communication device, storage medium, and program product

Abstract

An interference management method, a communication device, a storage medium, and a program product. The interference management method comprises: a first node receives cross‑link interference management information from the second node, wherein the cross‑link interference management information is used for mitigation management of cross-link interference.

Description

Interference management method, communication apparatus, storage medium, and program product

[0001] The present disclosure claims priority to Chinese Patent Application No. 202411023235.2, filed on July 26, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the field of communication technology, and in particular, to an interference management method, a communication apparatus, a storage medium, and a program product. BACKGROUND

[0003] In the field of wireless communication, full duplex (FD) technology refers to a communication mode that allows data to be transmitted in two directions simultaneously and instantaneously. With full duplex technology, communication resources can be fully utilized to achieve instant and real-time data transmission, thereby greatly improving the efficiency and real-time performance of data transmission. Therefore, full duplex technology is widely used in various communication systems. SUMMARY

[0004] In a first aspect, the present disclosure provides an interference management method applied to a first node. The interference management method comprises:

[0005] receiving cross-link interference management information from a second node, wherein the cross-link interference management information is used for mitigation management of cross-link interference.

[0006] In a second aspect, the present disclosure provides another interference management method applied to a second node. The interference management method comprises:

[0007] sending cross-link interference management information to a first node, wherein the cross-link interference management information is used for mitigation management of cross-link interference.

[0008] In a third aspect, the present disclosure provides a communication apparatus applied to a first node. The communication apparatus comprises a receiving module, wherein:

[0009] The receiving module is configured to receive cross-link interference management information from a second node, wherein the cross-link interference management information is used for mitigation management of cross-link interference.

[0010] In a fourth aspect, the present disclosure provides another communication apparatus applied to a second node. The communication apparatus comprises a sending module, wherein:

[0011] The sending module is configured to send cross-link interference management information to a first node, wherein the cross-link interference management information is used for mitigation management of cross-link interference.

[0012] In a fifth aspect, a communication apparatus is provided. The communication apparatus includes a processor and a memory; the memory and the processor are coupled; the memory is configured to store instructions executable by the processor; and the processor, when executing the instructions, performs the method provided in the first aspect or the second aspect.

[0013] In a sixth aspect, a computer readable storage medium is provided. The computer readable storage medium stores computer instructions. When the computer instructions are run on a processor, the processor performs the method provided in the first aspect or the second aspect.

[0014] In a seventh aspect, a computer program product is provided. The computer program product contains a computer program. When the computer program is run on a computer, the computer performs the method provided in the first aspect or the second aspect. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are included to provide a further understanding of the technical solutions of the present disclosure, constitute a part of the specification, and are used to explain the technical solutions of the present disclosure together with the embodiments of the present disclosure, and do not constitute a limitation to the technical solutions of the present disclosure.

[0016] FIG. 1 is a schematic diagram of a frame structure according to an embodiment of the present disclosure.

[0017] FIG. 2 is a schematic diagram of another frame structure according to an embodiment of the present disclosure.

[0018] FIG. 3 is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure.

[0019] FIG. 4 is a schematic diagram of a method for interference management according to an embodiment of the present disclosure.

[0020] FIG. 5 is a schematic diagram of SBFD time domain resource location information according to an embodiment of the present disclosure.

[0021] FIG. 6 is a schematic diagram of SBFD frequency domain resource location information according to an embodiment of the present disclosure.

[0022] FIG. 7 is a schematic diagram of SBFD configuration according to an embodiment of the present disclosure.

[0023] FIG. 8 is a schematic diagram of a measurement procedure according to an embodiment of the present disclosure.

[0024] FIG. 9 is a schematic diagram of another measurement procedure according to an embodiment of the present disclosure.

[0025] FIG. 10A is a schematic diagram of a measurement event according to an embodiment of the present disclosure.

[0026] FIG. 10B is a schematic diagram of another measurement event according to an embodiment of the present disclosure.

[0027] FIG. 10C is a schematic diagram of yet another measurement event according to an embodiment of the present disclosure.

[0028] FIG. 11 is a schematic diagram of a transmission procedure of cross-link interference management information according to an embodiment of the present disclosure.

[0029] FIG. 12 is a schematic diagram of another transmission procedure of cross-link interference management information according to an embodiment of the present disclosure.

[0030] FIG. 13 is a schematic diagram of yet another transmission procedure of cross-link interference management information according to an embodiment of the present disclosure.

[0031] FIG. 14 is a schematic diagram of another interference management method according to an embodiment of the present disclosure.

[0032] FIG. 15 is a schematic diagram of a composition of a communication apparatus according to an embodiment of the present disclosure.

[0033] FIG. 16 is a schematic diagram of another composition of a communication apparatus according to an embodiment of the present disclosure.

[0034] FIG. 17 is a schematic diagram of a structure of a communication apparatus according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0035] So that those skilled in the art can better understand the technical solutions of the embodiments of the present disclosure, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of the present disclosure.

[0036] Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise," "comprising," and the like are to be construed in an open, inclusive sense, as opposed to a closed or exclusive sense, so that references to a list of elements includes additional elements not specifically recited. The terms "a" and "an" are defined as one or more unless explicitly indicated to the contrary or otherwise evident from the context. The terms "first," "second," and the like, as used herein do not denote any quantity or order, but are used as labels for purposes of nomenclature. The use of "a" or "an" herein does not denote a limitation of quantity and can mean one or more. The use of "at least one" herein does not denote a limitation of quantity and can mean one or more.

[0037] The terms "first," "second," and the like, as used herein do not denote any quantity or order, but are used as labels for purposes of nomenclature. The use of "a" or "an" herein does not denote a limitation of quantity and can mean one or more. The use of "at least one" herein does not denote a limitation of quantity and can mean one or more.

[0038] In the present disclosure, the word "exemplary" is used to mean serving as an example, instance, or illustration. Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations. The

[0039] In addition, the use of "based on" means open and inclusive, as the process, step, calculation, or other action based on one or more recited conditions or values can be based on additional conditions or values beyond those that are recited.

[0040] With the continuous development and wide application of communication technology, various communication technologies (e.g., the 4th Generation Mobile Communication Technology (4G), long term evolution (LTE) system or LTE-Advance (LTE-A) system, the 5th generation mobile communication technology (5G), etc.) are facing more and more service demands. Therefore, the current communication technology needs to be continuously developed to support various application scenarios, including enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), and massive machine type of communication (mMTC), etc. Since full-duplex technology allows a device to simultaneously send and receive data at the same time, significantly improves communication efficiency, and can provide more possibilities for performance improvement of future mobile communication systems, full-duplex communication is one of the important development directions of 5G and future communication systems.

[0041] In a wireless communication system, time domain resources in time division duplex (TDD) are allocated between downlink and uplink. However, allocating limited time length for uplink in TDD leads to reduced coverage, increased delay and reduced capacity. To address this issue in TDD, the feasibility of allowing downlink and uplink to exist simultaneously (also known as full duplex) is worth studying, that is, within the TDD frequency band, sub-band non-overlapping full duplex (SBFD) or in-band full duplex (IBFD) can be applied at the base station side (e.g., next generation node B (gNB)). At this time, for some symbols configured as semi-static downlink or flexible resources, a part of frequency resources can be configured as uplink (UL) resources (e.g., UL sub-band or UL available physical resource block (PRB)). The downlink or flexible symbol configured with UL sub-band can be referred to as full duplex symbol. Alternatively, for some symbols configured as semi-static uplink or flexible resources, a part of frequency resources can be configured as downlink (DL) resources (e.g., DL sub-band or DL available PRB). The uplink or flexible symbol configured with DL sub-band can also be referred to as full duplex symbol. Uplink and downlink can exist on different frequency domain resources of the same time domain resource, as shown in FIG. 1, the frame structure can be DDDFU, some frequency domain resources (e.g., slots 1-3) in part of downlink resources and / or flexible resources are configured as UL sub-band, where D is downlink symbol, U is uplink symbol, and F is flexible symbol.

[0042] For full-duplex capable user equipment (UE) (i.e., full-duplex capable UE (e.g., SBFD UE)), the UL subband / UL available PRB in full-duplex symbol can be used for uplink transmission. For non-full-duplex capable UE, only regular UL symbol or flexible symbol can be used for uplink transmission. In access procedure, uplink transmission includes physical random access channel (PRACH) signal, physical uplink shared channel message 3 (msg3 PUSCH) (including initial transmission and retransmission), hybrid automatic repeat request acknowledgement (HARQ-ACK) of physical downlink shared channel message 4 (msg4 PDSCH), etc. In full-duplex scenario, full-duplex symbol and regular UL symbol or flexible symbol can extend total uplink transmission time domain resource, so that available random access resource can be increased or random access signal coverage can be enhanced.

[0043] However, in a cell using full duplex technology, other cells of the same frequency or different frequency can cause interference to the uplink and downlink transmission of the cell. The frame structure shown in FIG. 2 includes uplink symbols, downlink symbols, flexible symbols, and unallocated subbands. Symbol 3 of cell Cell-1 is a DL symbol, and symbol 3 of cell Cell-2 has both downlink resources and uplink resources, and symbol 3 is an SBFD symbol. The unallocated resources in symbol 3 can include gap subbands, but the unallocated resources are not necessarily all gap subbands. Symbols 4 and 5 are another way of subband allocation, with DL or UL subbands in the middle and other transmission direction subbands on both sides. At this time, the downlink transmission of Cell-1 on symbol 3 can affect the uplink transmission of Cell-2, that is, cross-link interference is caused. The radio access network node (RAN node) where Cell-1 is located is the node causing interference, which can be referred to as an aggressor RAN node (for ease of description, hereinafter referred to as an interference source node). The radio access network node where Cell-2 is located is the node receiving interference, which can be referred to as a victim RAN node (for ease of description, hereinafter referred to as a victim node). At this time, due to cross-link interference, the signal-to-noise ratio of the received signal can be reduced, the data transmission rate can be reduced, the bit error rate can be increased, and even the communication can be interrupted, which seriously affects the performance of the system. Therefore, how to manage and mitigate cross-link interference is a technical problem to be solved.

[0044] Therefore, the disclosure provides an interference management method. The victim node and the interference source node can exchange cross-link interference management information, and the cross-link interference management information is used for mitigation management of cross-link interference of the victim node. In this way, the victim node and the interference source node transmit the cross-link interference management information, so as to facilitate subsequent mitigation management of cross-link interference, thereby achieving the effects of improving system performance and optimizing resource utilization.

[0045] The method provided by the embodiments of the disclosure can be applied to various communication systems. For example, the communication system can be a long term evolution system, a 5G communication system, a Wi-Fi system, a 3rd generation partnership project (3GPP) related communication system, a future evolved communication system (such as a 6th generation (6G) communication system, etc.), or a system integrating multiple systems, etc., without limitation. The method provided by the embodiments of the disclosure will be described below with reference to the communication system 30 shown in FIG. 3. FIG. 3 is only a schematic diagram and does not constitute a limitation on the applicable scenarios of the technical solutions provided by the disclosure.

[0046] FIG. 3 is a schematic diagram of an architecture of a communication system 30 according to an embodiment of the present disclosure. In FIG. 3, the communication system 30 can include a network device 301, and a terminal 302 and a terminal 303 communicating with the network device 301. In some embodiments, the communication system 30 further includes a computing device 304 communicating with the network device 301. In some embodiments, the communication system 30 further includes a network device 305 communicating with the network device 301 or the computing device 304, and a terminal 306 and a terminal 307 communicating with the network device 305.

[0047] In FIG. 3, the network device can provide wireless access services for terminals. Specifically, each network device corresponds to a service coverage area, and a terminal entering the area can communicate with the network device to receive the wireless access services provided by the network device. In some embodiments, the service coverage area can include one or more cells. For example, the service coverage area corresponding to the network device 301 includes a cell 1 and a cell 2, and the terminal 302 accesses the network device 301 through the cell 1, and the terminal 303 accesses the network device 301 through the cell 2.

[0048] In some embodiments, a terminal can communicate with two or more network devices (for example, access network nodes) at the same time, and in this case, the network devices usually include a master node (MN) and one or more secondary nodes (SN), which is referred to as a dual connectivity scenario. The master node is usually responsible for the control plane functions of the user equipment, such as radio resource control connection management, security control, etc. The secondary node is responsible for the data plane functions of the user equipment, such as data transmission, quality of service control, etc.

[0049] The network device in the embodiments of the present disclosure, such as the network device 301 or the network device 305, can be any kind of device with wireless transceiving function, for example, can be an evolved node B (eNB), a generation node B (gNB), a transmission receive point (TRP), a transmission point (TP), and some other access node. According to the size of the service coverage area provided, the base station can be divided into a macro base station for providing a macro cell, a micro base station for providing a micro cell, and a femto base station for providing a femto cell. With the continuous evolution of wireless communication technology, the future base station can also be named as other names.

[0050] In some embodiments, the interfered node can be any network device in the communication system 30, and the interference source node can also be any network device in the communication system 30. For example, the network device 301 can be the interfered node, and the network device 305 can be the interference source node that causes cross-link interference to the network device 301. Alternatively, the network device 305 can be the interfered node, and the network device 301 can be the interference source node that causes cross-link interference to the network device 305.

[0051] In some embodiments, the network device in the embodiments of the present disclosure can adopt a centralized unit (CU) and distributed unit (DU) separation architecture (CU / DU split).

[0052] The terminal in the embodiments of the present disclosure, for example, the terminal 302, the terminal 303, the terminal 306 or the terminal 307, is any kind of device with wireless transceiving function. For example, the terminal is a handheld device (such as a mobile phone or a tablet computer, etc.) with wireless communication function, a vehicle-mounted device, a wearable device, a terminal or a computing device in an internet of things (IoT) system, etc. The terminal can also be referred to as a terminal device, or a user equipment (UE), without limitation.

[0053] The computing device 304 in FIG. 3 can be any kind of device with communication and computing capabilities. For example, the computing device 304 is a server, a computer or a cloud server, etc.

[0054] The communication system 30 shown in FIG. 3 is only used for example, and is not used to limit the technical solutions of the present disclosure. Those skilled in the art should understand that in some implementation processes, the communication system 30 can also include other devices, and the number of network devices, terminals or computing devices can also be determined according to actual needs, without limitation.

[0055] The embodiments provided by the present disclosure are described below with reference to the accompanying drawings.

[0056] As shown in FIG. 4, the present disclosure provides an interference management method, which is applied to a first node, and the method includes S101.

[0057] S101, receiving cross-link interference management information from a second node; wherein the cross-link interference management information is used for mitigation management of cross-link interference.

[0058] The first node provided in the present disclosure can be a victim node or an aggressor node. Illustratively, the first node is a victim node, and the second node can be an aggressor node. That is, the aggressor node can send cross-link interference management information to the victim node. Alternatively, the first node is an aggressor node, and the second node can be a victim node. That is, the victim node can send cross-link interference management information to the aggressor node.

[0059] In some embodiments, the cross-link interference management information includes at least one of the following: SBFD resource configuration information; resource configuration information for SBFD-based random access; SBFD-based bandwidth part (BWP) configuration information; indication information of whether to enable SBFD-based random access; indication information of whether to enable SBFD-based bandwidth part BWP; SBFD cell information; measurement configuration information; coordination information.

[0060] The following describes each item of cross-link interference management information.

[0061] (1) SBFD resource configuration information

[0062] The cross-link interference management information can include SBFD resource configuration information. The first node receiving the SBFD resource configuration information in the cross-link interference management information can understand the location of the SBFD resource of the neighboring station or the neighboring cell, so as to optimize the SBFD resource configuration of the cell, thereby eliminating the cross-link interference based on the SBFD resource configuration information. For example, the first node can receive the SBFD resource configuration information of the corresponding cell sent by the second node.

[0063] In some embodiments, the SBFD resource configuration information includes at least one of the following: a period of the SBFD resource; a subcarrier spacing associated with the SBFD resource; a cell associated with the SBFD resource; SBFD time domain resource location information; SBFD frequency domain resource location information; and state information of whether to enable the SBFD resource.

[0064] Illustratively, the period of the SBFD resource can be the repetition or update frequency of the SBFD resource in the time domain. For a UE in a radio resource control (RRC) connected mode, the time position of the sub-band full duplex (SBFD) sub-band is configured in a period. At least when only one TDD uplink-downlink mode is configured, the period can satisfy any one of the following:

[0065] The period is the same as the TDD uplink-downlink mode period configured in dl-UL-TransmissionPeriodicity in TDD-UL-DL-ConfigCommon;

[0066] The period is an integer multiple of the TDD uplink-downlink pattern period configured by dl-UL-TransmissionPeriodicity in TDD-UL-DL-ConfigCommon.

[0067] TDD-UL-DL-ConfigCommon is used to define the cell level uplink-downlink slot configuration, including key parameters such as dl-UL-TransmissionPeriodicity. dl-UL-TransmissionPeriodicity is used to define the periodicity of DL and UL transmission. The period is the same as the TDD uplink-downlink pattern period configured by dl-UL-TransmissionPeriodicity in TDD-UL-DL-ConfigCommon, that is, the time position update frequency of the SBFD subband is completely consistent with the switching frequency of the TDD mode, and the configuration and update of the SBFD subband will follow the dl-UL-TransmissionPeriodicity period defined in TDD-UL-DL-ConfigCommon. Alternatively, the period is an integer multiple of the TDD uplink-downlink pattern period configured by dl-UL-TransmissionPeriodicity in TDD-UL-DL-ConfigCommon, that is, the update frequency of the SBFD may be slower than the switching frequency of the TDD mode, for example, dl-UL-TransmissionPeriodicity in TDD-UL-DL-ConfigCommon is configured as 1ms, then the update period of the SBFD may be 2ms, 5ms, etc., that is, an integer multiple of the TDD mode switching period.

[0068] In addition, it is also possible to configure the configuration and update strategy of the SBFD subband time position when the UE is configured to switch between two different TDD-UL-DL modes.

[0069] The subcarrier spacing (SCS) associated with the SBFD resource is used to describe the distribution density of the signal in the frequency domain, that is, the frequency interval between adjacent subcarriers, which can affect the bandwidth, symbol rate, slot length, etc. of the signal.

[0070] The cell associated with the SBFD resource is usually used to indicate in which cell the SBFD resource is configured. The cell can be uniquely identified by its physical cell identifier (NR-PCI) or network registration area identifier (NR CGI).

[0071] The SBFD time domain resource location information is generally used to indicate the location information on the time axis, for example, which slots or symbols are allocated for SBFD use.

[0072] In some embodiments, in a cross-operator scenario, neighboring nodes, for example, base stations, can belong to different operators, and the operators can choose to turn off the entire SBFD configuration of the cell to which they belong. Therefore, the SBFD resource configuration can further include an activation / deactivation indication. The on and off state of the SBFD resource, if the SBFD resource is off, means that the transmitted SBFD resource is not enabled, and vice versa. In the case of excessive interference, the cell can also turn off the SBFD configuration.

[0073] In some embodiments, the SBFD time domain resource location information can include SBFD slot-level time domain resource location and / or SBFD symbol-level time domain resource location. Each item of SBFD time domain resource location information can be as shown in FIG. 5.

[0074] Exemplarily, the SBFD slot-level SBFD time domain resource location information includes at least one of the following: index information of the SBFD slot; number of consecutive SBFD slots; starting position and / or ending position of the SBFD slot; starting position offset and / or ending position offset of the SBFD slot; slot type of the SBFD slot; and link direction corresponding to the symbol in the SBFD slot.

[0075] The index information of the SBFD slot is used to indicate the slot index at which the SBFD resource starts or a specific slot index.

[0076] The number of consecutive SBFD slots is used to indicate the number of consecutive slots allocated for SBFD use.

[0077] The starting position of the SBFD slot can include the index of the first slot at which the SBFD resource starts. The ending position of the SBFD slot can include the index of the last slot at which the SBFD resource starts.

[0078] The starting position offset or ending position offset of the SBFD slot can include the offset amount of the starting position or ending position of the SBFD slot relative to a certain reference point, such as the start of a frame.

[0079] The slot type of the SBFD slot includes whether each slot is full uplink, full downlink, full SBFD, or a combination type (combination of uplink, downlink, or SBFD).

[0080] The link direction corresponding to the symbol in the SBFD slot, used to indicate whether the SBFD resource in the slot is effective for the uplink subband or the downlink subband, or both. It should be noted that although a slot is usually configured as a whole, in some cases, it may be necessary to indicate whether the SBFD resource in the slot is effective for the uplink subband or the downlink subband, or both.

[0081] In some embodiments, for the transmission and reception of SBFD UE in SBFD symbol, the following any one is also considered to determine the link direction. That is, to determine whether to transmit or receive in the SBFD symbol by any one of the following.

[0082] The SBFD UE determines the link direction according to the configured or planned transmission (or reception). In the case of resource conflict, the link direction can also be determined in combination with the conflict.

[0083] The SBFD UE determines according to the link direction indicated by the gNB.

[0084] The above is only an exemplary illustration, and there can be other possible ways to determine the link direction, which are not listed one by one here.

[0085] The SBFD time domain resource location information of the SBFD symbol level includes at least one of the following: index information of the SBFD symbol; number of consecutive SBFD symbols; starting position and / or ending position of the SBFD symbol; starting position offset and / or ending position offset of the SBFD symbol; symbol type of the SBFD symbol; link direction corresponding to the SBFD symbol.

[0086] The index information of the SBFD symbol is used to indicate the starting or specific symbol index of the SBFD resource.

[0087] The number of consecutive SBFD symbols is used to indicate the number of consecutive symbols allocated for SBFD use.

[0088] The starting position of the SBFD symbol can include the index of the first symbol where the SBFD resource starts. The ending position of the SBFD symbol can include the index of the last symbol where the SBFD resource starts.

[0089] The starting position offset or ending position offset of the SBFD symbol can include the offset amount of the starting position or ending position of the SBFD symbol relative to a certain reference point (such as the start of the frame).

[0090] The symbol type of an SBFD symbol includes whether each symbol is full uplink, full downlink, full SBFD, or a combined type (containing a combination of uplink, downlink, or SBFD).

[0091] The link direction corresponding to a symbol in an SBFD symbol, used to indicate whether the SBFD resource in the symbol is valid for uplink subband, downlink subband, or both.

[0092] The SBFD frequency domain resource location is used to indicate the allocation of SBFD resources in the frequency spectrum, such as which subcarriers (or subbands) are used for SBFD communication. The frequency domain resource can be as shown in FIG. 6.

[0093] In some embodiments, the SBFD frequency domain resource location information includes at least one of: subcarrier spacing; the number of PRBs contained in a subband; the bandwidth of a downlink subband, an uplink subband, or a guard subband; the starting position of a downlink subband, an uplink subband, or a guard subband in the frequency domain; the starting position offset of a downlink subband, an uplink subband, or a guard subband in the frequency domain; subband index information; subband type information; physical resource block index information; and physical resource block type information.

[0094] The subcarrier spacing can generally be used to describe the granularity or resolution of the SBFD frequency resource. The subcarrier spacing determines the smallest unit of resource in the frequency domain.

[0095] The number of PRBs contained in a subband is used to describe the amount of resources occupied by the subband in the frequency domain.

[0096] The bandwidth of a downlink subband, an uplink subband, or a guard subband, i.e., the number of consecutive PRBs, indicates the number of consecutive PRBs occupied by different types of subbands, such as downlink subbands, uplink subbands, or guard subbands, in the frequency domain.

[0097] The starting position of a downlink subband, an uplink subband, or a guard subband in the frequency domain, such as the starting PRB, for example, the starting point of the subband in the frequency domain, i.e., the index of the first PRB.

[0098] The starting position offset of a downlink subband, an uplink subband, or a guard subband in the frequency domain is used to indicate the offset of the subband relative to a certain reference point (such as Point A) in units of PRBs, for accurate calculation of the position of the subband.

[0099] The subband index information is used to uniquely identify the subband.

[0100] Subband type information is used to describe the type of subband, e.g., downlink, uplink, guard, flexible, or UE-specific subband. In one example, in SBFD symbols, the uplink available PRBs can be determined according to the intersection of cell-specific uplink subbands and active uplink BWP. The downlink (DL) available PRBs can be determined according to the intersection of cell-specific downlink subbands (or subband set) and active downlink BWP in SBFD symbols. In another example, the uplink / downlink available PRBs in SBFD symbols are configured within the active uplink / downlink BWP.

[0101] Physical resource block index information is used to uniquely identify a PRB.

[0102] Physical resource block type information is used to describe the type of PRB, e.g., downlink, uplink, guard, flexible, or UE-specific PRB.

[0103] In some embodiments, the SBFD frequency domain resource location information can also include the number of the same type of subband. For example, two downlink subbands can be included. In another example, the maximum number of uplink subbands for SBFD operation within SBFD symbols in one TDD carrier is one.

[0104] The uplink (UL) subband can be located on one side of the carrier or in the middle portion of the carrier.

[0105] In some embodiments, one slot can include SBFD symbols and non-SBFD symbols. For semi-static indication of SBFD subband time location, when only one TDD-UL-DL pattern is configured, the SBFD symbols are configured in a contiguous manner within the TDD-UL-DL pattern period. Alternatively, when two TDD-UL-DL patterns are configured, and the SBFD symbols are configured for only one of the two TDD-UL-DL patterns, the SBFD symbols are configured in a contiguous manner within the TDD-UL-DL pattern period. If two TDD-UL-DL patterns are configured, and the SBFD symbols are configured for both patterns, the SBFD symbols are configured in a contiguous manner within each TDD-UL-DL pattern period.

[0106] Alternatively, the SBFD symbols are configured in the downlink (DL) and / or flexible symbols configured in TDD-UL-DL-ConfigCommon.

[0107] Alternatively, the configured SBFD symbols can start from any symbol within a slot and end at any symbol within the slot.

[0108] Alternatively, use referenceSubcarrierSpacing in TDD-UL-DL-ConfigCommon as the reference subcarrier spacing (SCS).

[0109] In some implementations, the SBFD resource configuration received by the first node from the second node can include one cell-common SBFD resource location. Alternatively, the SBFD resource configuration received by the first node from the second node can include one intended SBFD resource location that combines a cell-specific SBFD resource location and a UE-dedicated SBFD resource location. Alternatively, the SBFD resource configuration received by the first node from the second node can include one or more possible SBFD resource locations, each of which can be a cell-common SBFD resource location, or a UE-dedicated SBFD resource location, or an intended SBFD resource location that combines a cell-specific SBFD resource location and a UE-dedicated SBFD resource location. As shown in FIG. 7, the intended SBFD configuration based on cell Cell-2, UE1-1, UE-2, or a combination of Cell-2 / UE-1 / UE-2 is shown.

[0110] (2) Resource configuration information for SBFD-based random access.

[0111] Random access channel (RACH) configuration is used to indicate how a UE initiates an access request to the network, how the network responds to these requests, and so on. RACH configuration has multiple types, including traditional 4-step RACH configuration, simplified 2-step RACH configuration (such as MsgA-ConfigCommon-r16), and contention based random access (CBRA) and contention free random access (CFRA) configuration, and so on. CBRA configuration can be contained in the uplink common configuration of the BWP, such as BWP-UplinkCommon, or defined by a specific configuration such as MsgA-ConfigCommon-r16. CFRA configuration can be configured in RACH-ConfigDedicated, cfra, cfra-TwoStep-r16, SI-RequestConfig, or rach-ConfigBFR in BeamFailureRecoveryConfig in ReconfigurationWithSync. It can also be referred to as traditional RACH configuration.

[0112] It should be understood that the traditional RACH configuration can also be applied to non SBFD UE (non SBFD UE).

[0113] In some embodiments, the resource configuration information of the SBFD-based random access can include random access configuration dedicated to SBFD resource configuration or shared SBFD RACH configuration.

[0114] In an example, the random access configuration dedicated to SBFD resource configuration refers to that the network device can provide one or more sets of SBFD RACH configuration for the UE, which is independent of the traditional RACH configuration.

[0115] Each set of dedicated random access configuration for SBFD resource configuration can be used to indicate that SBFD UEs can initiate random access according to the RACH parameters specified in the configuration. And including according to the type of initiating random access, independent SBFD RACH configuration can contain 4-step SBFD RACH configuration and / or 2-step SBFD RACH configuration. Independent SBFD RACH configuration can also contain contention-based random access CBRA SBFD RACH configuration and / or CFRA SBFD RACH configuration, etc. In addition, at least one independent SBFD RACH configuration contains resource indication of RO time-frequency code domain independent of traditional configuration, and / or independent synchronization signal block (SSB) and random access occasion (RO) mapping relationship indication. For example, independent SBFD RACH configuration can contain different preamble formats from traditional RACH configuration, and / or different PRACH configuration periods, etc.

[0116] In another example, shared SBFD RACH configuration means that the network device can provide one or more sets of SBFD RACH configuration based on the traditional RACH configuration for the UE, each set of the configuration specifies that the SBFD UE can initiate random access according to the RACH parameters specified in the configuration.

[0117] Exemplarily, the shared 4-step SBFD RACH configuration can be based on or correspond to the traditional 4-step RACH configuration, the shared 2-step SBFD RACH configuration can be based on or correspond to the traditional 2-step RACH configuration (here the traditional 2-step RACH configuration can be independent of the traditional 4-step RACH configuration, or shared with the traditional 4-step RACH configuration), the shared CBRA SBFD RACH configuration can be based on or correspond to the traditional CBRA RACH configuration, and the shared CFRA SBFD RACH configuration can be based on or correspond to the traditional CFRA RACH configuration.

[0118] The shared SBFD RACH configuration can add indication information in the traditional RACH configuration, which is used to indicate whether the traditional RACH configuration can be used by the SBFD UE.

[0119] That is, the random access configuration includes a legacy random access resource, a shared random access resource, or a random access resource dedicated to the SBFD UE. The CLI (cross-link interference)-MI (management information) can include the random access configuration under the SBFD resource configuration, such as the shared SBFD RACH configuration, or the random access configuration dedicated to the SBFD resource configuration.

[0120] (3) SBFD-based BWP.

[0121] The BWP configuration (legacy BWP) can include at least one of a random access configuration corresponding to the BWP, a physical uplink shared channel (PUSCH) or physical downlink shared channel (PDSCH) configuration, or a physical uplink control channel (PUCCH) or physical downlink control channel (PDCCH) configuration. It can also be referred to as a legacy BWP configuration.

[0122] In some embodiments, the SBFD-based BWP can include a BWP dedicated to the SBFD resource configuration or a shared SBFD BWP.

[0123] In one example, the BWP dedicated to the SBFD resource configuration means that the network device can configure a set of BWP dedicated to the SBFD UE for the SBFD UE. The SBFD UE can initiate initial random access using the BWP.

[0124] In another example, the shared SBFD BWP means that the BWP configuration can be used for the SBFD UE and also for the non-SBFD UE. For the SBFD UE, a shared BWP or a dedicated SBFD BWP can be configured for the SBFD UE. In addition, the BWP priority of the SBFD UE can also be configured, which can be included in the BWP configuration, to indicate which type of BWP is preferred. For example, the priority of the SBFD BWP, the shared BWP (shared BWP), or the legacy BWP (legacy BWP).

[0125] Exemplarily, for the SBFD UE, the SBFD UE can decide to use the SBFD BWP according to the configuration. At this time, the SBFD UE can initiate random access (message 1) on the random access resource corresponding to the SBFD BWP. The network can indicate on the subsequent random access response (message 2) whether the SBFD UE switches the BWP type, for example, it can indicate the SBFD UE to switch from the SBFD BWP to the shared BWP or the legacy BWP. Thus, the SBFD UE can switch to the corresponding BWP according to the indication to complete the random access (at this time the SBFD UE can send message 3 or receive message 4) or initiate a new random access.

[0126] Alternatively, in the case of random access failure on the SBFD BWP (for example, the number of times of sending the random access preamble reaches the maximum value), the SBFD UE can switch to the shared BWP or the legacy BWP on its own to re-initiate random access.

[0127] The BWP configuration includes: the BWP configuration of transmission, the shared BWP configuration or the BWP configuration dedicated to the SBFD UE. And the BWP configuration under the SBFD resource configuration can be included in the CLI-MI, such as the shared SBFD BWP configuration, the BWP configuration dedicated to the SBFD resource configuration.

[0128] (4) Indication information of whether to start the SBFD-based random access.

[0129] The indication information is used to indicate whether to start the SBFD-based random access, or can indicate the activation or deactivation of the SBFD-based random access.

[0130] Exemplarily, in the cross-operator scenario, the two adjacent base stations (including the interfered node and the interference source node) can belong to different operators. The operator can choose to turn off the entire SBFD configuration of the cell belonging to it. Therefore, the SBFD RACH configuration can also include an activation or deactivation indication. At this time, in the case of excessive cross-link interference, the cell can turn off the SBFD configuration.

[0131] (5) Indication information of whether to start the SBFD-based BWP.

[0132] The indication information is used to indicate whether to start the SBFD-based BWP, or can indicate the activation or deactivation of the SBFD-based BWP.

[0133] The network can start and stop the SBFD-based RACH configuration or BWP configuration, and notify other RAN nodes of the start and stop information.

[0134] (6) SBFD cell information.

[0135] Exemplarily, the first node and the second node can interact the SBFD capability of the network. For example, the network can not support SBFD, but since SBFD can improve the number of resources for uplink transmission, for a non-support SBFD cell, after an SBFD UE accesses, the non-support SBFD cell can also select to switch the SBFD UE to a support SBFD cell. Therefore, the network can broadcast SBFD cell information for the UE to use for cell selection of the UE. In addition, the second node and the first node or the DU and the CU can also interact the SBFD cell information as follows.

[0136] In some embodiments, the SBFD cell information includes at least one of the following:

[0137] indication information of whether the cell supports SBFD;

[0138] a first field, wherein the first field is used to indicate the SBFD terminal to determine other cells capable of supporting SBFD within the current frequency for cell reselection in the case that the current cell is a forbidden cell corresponding to the SBFD terminal (SBFD UE);

[0139] indication information of whether the cell is a forbidden cell for the SBFD UE;

[0140] support SBFD cell information provided by a non-support SBFD cell.

[0141] The indication information of whether the cell supports SBFD is also used to indicate whether the cell on the frequency supports SBFD. If the indication information exists, the SBFD UE can consider these NR frequencies when performing cell reselection evaluation. In some embodiments, the SBFD UE can also determine whether the network supports SBFD through whether SBFD resource configuration or SBFD RACH or BWP configuration exists.

[0142] The first field can be an intraFreqReselectionSBFD field, which is used to instruct the SBFD terminal to determine other cells capable of supporting SBFD within the current frequency, i.e., the same frequency range, for cell reselection in the case that the current cell is a forbidden cell or is considered as a forbidden cell for the SBFD terminal. That is, the SBFD UE determines that the current cell cannot be accessed, and the SBFD UE can select or reselect in other cells of the same frequency based on the indication of the first field, e.g., the intraFreqReselectionSBFD field.

[0143] The indication information of whether the cell is a forbidden cell for the SBFD terminal (i.e., the above-mentioned indication information of whether the cell is a forbidden cell for the SBFD UE) indicates whether the cell is marked as a barred state for the SBFD terminal.

[0144] The cell not supporting SBFD provides information of a cell supporting SBFD. Exemplarily, in a wireless communication network, due to technical differences, device compatibility, network planning, or the like, there can be a part of cells supporting SBFD technology and another part of cells not supporting SBFD technology. The cell not supporting SBFD technology can provide information about the cell supporting SBFD to the SBFD UE, such as a frequency point, a network cell global identifier (NCGI), a physical cell identifier (PCI), an SSB resource, and the like. In this way, when the SBFD UE resides in the cell not supporting SBFD, the SBFD UE can select to switch to the cell supporting SBFD for access according to the information of the cell supporting SBFD provided by the cell. Thus, the communication performance of the SBFD UE is optimized, and the user experience is improved.

[0145] The capability indication information of the UE can indicate whether the UE is an SBFD UE. In a random access channel (RACH) process, the SBFD UE can have no identification information for indicating whether it is an SBFD UE in message 1 (Msg1) or message 3 (Msg3).

[0146] In addition, the network can indicate whether the SBFD UE is barred from accessing a certain cell through system information. In addition, the system information can also provide a specific IFRI (first field) for the SBFD UE. The system information can also provide information of adjacent frequencies that the SBFD UE is allowed to access.

[0147] In an example, the SBFD UE can determine to continue to attempt to access the current cell, to reselect to another cell of the same frequency, or other possible operations, by performing the following logical steps.

[0148] 1> if the UE is an SBFD UE or the UE is an SBFD UE and is currently in a radio resource control connected (RRC_CONNECTED) state and timer T311 is running:

[0149] 2> if the cellBarredSBFD (cell barred for SBFD) indication is present in the acquired system information block 1 (SIB1):

[0150] 3> consider the cell as barred;

[0151] 3> if the intraFreqReselectionSBFD (first field) parameter is present in the acquired system information block 1 (SIB1):

[0152] 4> perform the barring access logic according to intraFreqReselectionSBFD;

[0153] 3> else:

[0154] 4> refer to intraFreqReselectionSBFD being set to allowed to perform the barring access logic, and end.

[0155] Exemplarily, when a cell is indicated as "barred" or considered as the cell status as "barred", the UE is not allowed to select / reselect the cell, including when making an emergency call. At this time, the UE can select another cell based on the following ways:

[0156] In the case that a cell is considered as the status as "barred" due to the failure to acquire the master information block (MIB), the UE can exclude the barred cell from the candidate list for cell selection / reselection for up to 300 seconds. Or, in the case that the reselection condition is met, the UE can select another cell on the same frequency.

[0157] Otherwise (i.e., in the case that the cell is not considered as the status as "barred" due to the failure to acquire the master information block (MIB)), there are several possible situations:

[0158] Situation 1, the UE is an SBFD UE, the UE can acquire the system information block 1 (SIB1), and considers "intraFreqReselection" in the MIB as "intraFreqReselectionSBFD" in the SIB1.

[0159] At this time, if the cell is considered to be in the state of "barred" due to the failure to acquire SIB1, the UE can exclude the barred cell from the candidate list for cell selection / reselection for 300 seconds, or in the case where the reselection condition is met, the UE can select another cell on the same frequency.

[0160] Alternatively, if the cell state is indicated as "barred" in the MIB but the UE fails to acquire SIB1, or if the cell is considered to be in the state of "barred" due to the non-support of SBFD UE, the UE shall exclude the barred cell from the candidate list for cell selection / reselection for 300 seconds.

[0161] Alternatively, in the case where the pre-set selection / reselection condition is met, the UE can select another cell on the same frequency.

[0162] Case 2: The UE is not a RedCap UE, eRedCap UE, or 2Rx XR UE, or is not an SBFD UE, or the UE is an SBFD UE and there is intraFreqReselectionSBFD in SIB1.

[0163] If the intraFreqReselection field in the MIB indicates "allowed", at this time, if the reselection condition is met, the UE can select another cell on the same frequency.

[0164] If the cell is considered to be in the state of "barred" due to the failure to acquire SIB1, at this time, the barred cell can be excluded from the candidate list for cell selection / reselection for 300 seconds. Otherwise, the UE shall exclude the barred cell from the candidate list for cell selection / reselection for 300 seconds.

[0165] If the intraFreqReselection field in the MIB is set to "not allowed". If the cell is considered to be in the state of "barred" due to the failure to acquire SIB1, the UE can exclude the barred cell from the candidate list for cell selection / reselection for 300 seconds. If the cell operates in licensed spectrum, the UE shall not reselect to another cell on the same frequency as the barred cell and shall exclude such a cell from the candidate list for cell selection / reselection for 300 seconds. Otherwise, if the reselection condition is met, the UE can select another cell on the same frequency.

[0166] Alternatively, a cell is not considered as barred if it is not possible to acquire SIB1, if the cell is operating in licensed spectrum, or if the cell belongs to a PLMN (Public Land Mobile Network) equivalent to a PLMN the UE is registered or has selected, or if the cell belongs to a SNPN (Service Network Provider Network) equivalent or equal to a SNPN the UE is registered or has selected. The UE shall not reselect to another cell on the same frequency as the barred cell and shall exclude such cell from the list of candidates for cell selection / reselection for 300 seconds. Otherwise, if the reselection condition is met, the UE can select another cell on the same frequency. In summary, the UE shall exclude the barred cell from the list of candidates for cell selection / reselection for 300 seconds.

[0167] (5) Measurement configuration information.

[0168] The measurement configuration information is used to indicate how to perform the measurement, and is one of the key information for interference detection and management of each node.

[0169] In some embodiments, the measurement configuration information includes at least one of the following: Measurement Report configuration information; Measurement Object configuration information, including Measurement Resource configuration information; Measurement Identity configuration information; for associating one report configuration and one measurement object configuration; Measurement Gap configuration information; Measurement quantity.

[0170] The measurement report is the data collected and sent by the UE or RAN node to the base station according to the measurement configuration, which can include important information about the state of the wireless channel, such as the strongest downlink beam information (Strongest DL beam information) and the like.

[0171] The measurement object (measurement object, MO), i.e., the object to be measured (for example, a specific cell) includes SSB index or channel state information-reference signal (channel state information-reference signal, CSI-RS) index and corresponding measurement resource configuration information. The measurement resource configuration information (Measurement Resource Configuration) indicates the reference signal resource used for measurement, including SSB and / or CSI-RS, etc.

[0172] The measurement gap configuration information is used to indicate a measurement gap (Measurement gap), and can include at least one of a gap pattern offset (gapOffset), a measurement gap length (mgl), a measurement gap repetition period (mgrp), and a measurement gap timing advance (Mgta) parameter.

[0173] The gap pattern offset can be used to indicate the time point at which the measurement gap starts, for example, to indicate at which subframe the measurement gap will start. There can be 160 offset values, but not all of them are suitable for all periods. For example, the offset value points to the starting subframe within the period, and its value range can be from 0 to MGRP-1. For another example, if the period is 20 ms, the offset range can be from 0 to 19. The measurement gap length is used to indicate the time length of the measurement gap, usually in milliseconds (ms). The measurement gap repetition period is used to indicate the period of the repeated occurrence of the measurement gap, usually in milliseconds (ms). If the measurement gap timing advance function is configured, it allows the UE to perform measurement operations in advance of the actual start time of the measurement gap, for example, the measurement gap is advanced from the time gap ms to the end before the latest subframe occurs. Mgta can indicate the timing advance amount, which can be 0.25 ms (FR2) or 0.5 ms (FR1).

[0174] In some embodiments, the measurement report configuration information comprises at least one of: a measurement quantity for ranking the measurement results; a triggering period for the measurement report; a triggering event for the measurement report; a triggering measurement quantity (e.g., at least one of RSRP, RSRQ, RSSI, or CQI) that can be used to make a measurement judgment on whether a reporting condition is met; a hysteresis of the measurement results; a reporting quantity (e.g., at least one of RSRP, RSRQ, RSSI, or CQI) that is a measurement quantity that needs to be filled in the measurement report; a ranking quantity (e.g., at least one of RSRP, RSRQ, RSSI, or CQI) of the measurement results, wherein if the ranking quantity of the measurement results is not configured, the reporting quantity or the measurement quantity can be used as the ranking quantity, which refers to a ranking measurement quantity for ranking the beam measurement results when reporting the strongest beam; a maximum number of cells included in the measurement report; a maximum number of beams included in the measurement report; a threshold value reported in the measurement report (i.e., a beam measurement result or a cell measurement result above the threshold value needs to be reported); a beam index (SSB index or CSI-RS index) included in the measurement report; a reporting delay time limit of the measurement report; a threshold value for triggering measurement; a time to trigger for meeting a triggering condition; a report amount (reportAmount); a reporting interval (reportInterval); whether a report on leave is required for event-triggered reporting; and a layer 3 filter parameter.

[0175] The measurement quantity is a parameter used to judge whether the measurement result meets the reporting condition, such as reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), received signal strength indication (RSSI), channel quality indicator (CQI), etc. These parameters are calculated during the measurement process and are used for subsequent judgment and reporting. The measurement quantity can also include a reporting quantity, i.e., a specific measurement value that needs to be filled in the measurement report, which is usually the same as or related to the measurement quantity.

[0176] The measurement quantity for ranking the measurement results is a parameter for ranking the measurement results for analysis and processing, such as RSRP, RSRQ, RSSI, CQI, etc.

[0177] The trigger period of measurement report is used to indicate the timing of triggering the report of measurement results, i.e. the measurement report can be a periodic report based on time.

[0178] The trigger event of measurement report is used to indicate the triggering of report based on specific events, such as the measurement value exceeding a certain threshold.

[0179] The reporting delay time limit of measurement report is used to limit the maximum time interval from receiving the reference signal to feeding back the measurement results, to ensure the timeliness of the measurement results.

[0180] The threshold of triggering measurement, also known as measurement start threshold. For example, when the measurement result of the serving cell is lower or higher than the threshold, the measurement of the reference signal sent by other nodes is started.

[0181] The timer to trigger the trigger condition, which is used to indicate the length of time that the measurement result needs to continuously meet the trigger condition, to avoid false positives caused by transient fluctuations.

[0182] Layer 3 filter parameters are used to filter the measurement results to reduce the impact of noise and fluctuations on the measurement results.

[0183] In some implementations, the second node can send the measurement configuration information to the first node. Alternatively, the second node can send a measurement configuration request to the first node to request the measurement configuration information of the first node.

[0184] In some embodiments, in order to be able to detect the specific resource location and strength of interference, the second node and the first node can also interact with the measurement resource of the reference signal, so as to complete the detection and avoidance of interference by measuring the reference signal. Exemplarily, the CLI-MI can further include at least one of the following: measurement report (Measurement Report); interference mitigation request (CLI-mitigation request); measurement configuration information (measurement configuration); measurement configuration request (measurement configuration request); measurement configuration response (measurement configuration response).

[0185] When the RAN node detects significant interference, it can send an interference mitigation request to the neighboring RAN node or network management system. The request contains specific information about the interference, such as the location, frequency, strength of the interference source, and suggested mitigation measures.

[0186] The measurement configuration request can include specific requirements on the required measurement configuration, such as measurement type, measurement object, reporting frequency, coordination information, etc.

[0187] When receiving the measurement configuration request, the corresponding measurement configuration can be generated according to the requirements in the request, and sent to the requester through the measurement configuration message. The configuration message contains complete measurement configuration information for the requester to perform channel measurement. In this way, the measurement process can be flexibly adjusted to adapt to different interference cancellation requirements. The requester can feed back a measurement configuration response to identify whether the corresponding measurement configuration is successfully applied.

[0188] In some embodiments, the first node and the second node can also interact measurement capability information. Exemplarily, due to the limitation of physical implementation, each node cannot receive an unlimited number of measurement resources. Therefore, the two nodes can interact their measurement capabilities, and the measurement capability information can also be included in the CLI-IM.

[0189] In some embodiments, the measurement capability information can include at least one of the following: supported reporting quantity; density of measurement resources (SSB or CSI-RS); number of CSI RS resources in a CSI RS resource set or maximum number of SSBs in an SSB burst, for example, maximum number of spatial division beams; supported maximum number of SSB or CSI-RS resources; supported maximum number of measurement objects; support for SSB based CLI or CSI-RS based CLI measurement; supported CLI mitigation method, such as beam nulling or beam pairing; supported measurement quantity, such as RSRP, RSRQ, RSSI or CQI; supported measurement trigger type, periodic trigger and event trigger; supported event trigger type, such as trigger above threshold, trigger below threshold, etc.; supported maximum number of measurement cells; supported maximum number of beams, such as number of SSB beams in an SSB burst.

[0190] In some embodiments, the above measurement resource object configuration information includes at least one of the following: SSB resource configuration information; index information of the SSB resource configuration information; CSI-RS resource configuration information; index information of the CSI-RS resource configuration information; measurement purpose corresponding to the measurement resource configuration information; SSB or CSI-RS to be measured; SSB measurement time configuration information; reference signal transmitter cell information associated with the measurement configuration; reference signal receiver cell information associated with the measurement configuration; subcarrier spacing; association information of CSI-RS measurement resource and SSB.

[0191] The SSB resource configuration information can be used to indicate one or more SSB resources, each identified by an SSB resource configuration index. Each SSB resource can contain one or more SSB bursts, each containing one or more synchronization signal block reference signals (SSB-RSs). Each SSB in a SSB burst is indexed by an SSB index.

[0192] The index information of the SSB resource configuration information can be used to indicate the SSB resource, the SSB resource configuration index, or the SSB index to be used for measurement.

[0193] The CSI-RS resource configuration information can be used to indicate one or more CSI-RS resources.

[0194] The index information of the CSI-RS resource configuration information can be used to indicate the CSI-RS resource, the CSI-RS resource configuration index, or the CSI-RS index to be used for measurement.

[0195] The purpose of the measurement resource configuration, for example, indicates that the measurement resource is used for UE mobility measurement, cross-link interference measurement, or both UE mobility measurement and cross-link interference measurement. The purpose of the measurement resource configuration can also be associated with a specific measurement resource configuration, a reference signal type (such as SSB or CSI-RS), and a specific SSB or CSI-RS index.

[0196] The SSB or CSI-RS that needs to be measured can be represented by a bitmap, for example, which SSB index corresponds to the SSB or CSI-RS index corresponding to the CSI-RS that will be measured. In network configuration, it can be explicitly specified that within the measurement duration of SMTC, which SS block should be measured by the UE. This is usually achieved by a list or bitmap, where each bit or element corresponds to a possible SS block, and the state of the bit or element (such as set or clear) indicates whether the UE should measure the corresponding SS block. When the field is missing, the UE measures all SS blocks.

[0197] The SSB measurement timing configuration (SMTC) is used to indicate the time for the UE to measure the SSB, so as to ensure that the UE receives and measures the SSB signal within the correct time window.

[0198] Exemplarily, ssb-MeasurementTimingConfiguration message can be used to indicate SMTC. When ssb-MeasurementTimingConfiguration message is contained in “Serving NR Cell Info”, “Serving Cell Info NR” or “Serving Cell Info”, the timing of SMTC is based on the cell containing the message. That is, UE will search SSB within the time window specified by this cell.

[0199] Alternatively, when ssb-MeasurementTimingConfiguration message is contained in “NR Neighbor Info” or “Serving Cell Info” in specific context, the timing of SMTC is based on the cell indicated in “Serving NR Cell Info” or “Serving Cell Info NR” specified when providing “NR Neighbor Info” or “Neighbor Info NR”. This allows UE to search SSB according to the configuration of the neighbor cell when trying to connect to the neighbor cell.

[0200] Further alternatively, when ssb-MeasurementTimingConfiguration message is contained in “CU to DU RRC Info”, the timing of SMTC is based on the cell indicated by the SpCell ID provided with the message. This is typically used for RRC information exchange between CU and distributed unit, DU, where CU needs to specify the time for UE to search SSB within the cell covered by DU.

[0201] Further alternatively, when ssb-MeasurementTimingConfiguration message is provided by a non-terrestrial network (NTN) cell, the offset (derived from parameter periodicityAndOffset) satisfies: the propagation delay of NTN payload of the cell containing the message to gNB (base station) is equal to 0 ms.

[0202] Measurement configuration associated cell information is used to indicate the cell information associated with the measurement configuration.

[0203] Subcarrier spacing can be typically used to describe the granularity or resolution of the measurement resource of CSI-RS.

[0204] CSI-RS measurement resource association information with SSB, exemplarily, in some cases, the measurement resource configuration of CSI-RS can also include association information with a specific SSB, which helps UE better understand the relative position and relationship between signals.

[0205] In some embodiments, the measurement resource configuration information can also include activation / deactivation indication of the measurement resource.

[0206] It is noted that the two RAN nodes can interact the CLI measurement resource and measurement configuration when establishing the Xn link, but the CLI can not have occurred yet, so the measurement does not need to be performed immediately. At this time, the measurement configuration can have an activation / deactivation indication to indicate whether the corresponding measurement configuration or measurement resource is activated. If activated, the measurement reference signal is transmitted or received at the corresponding measurement resource location.

[0207] In some implementations, the measurement resource configuration can be dedicated to the CLI measurement resource configuration, distinguished from the measurement resource configuration for UE mobility, etc.

[0208] In some embodiments, the measurement configuration information, e.g., the measurement resource configuration information, can be configured by the transmitter of the reference signal.

[0209] In one example, the first node receives the reference signal from the second node, and further transmits, to the second node, a measurement result of the reference signal or a mitigation request of the cross-link interference based on the reference signal.

[0210] As shown in FIG. 8, the RAN node 1 can transmit the CLI reference signal to the RAN node 2. The RAN node 1 can further transmit the CLI-MI, including the measurement configuration information, to the RAN node 2. The RAN node 2 can transmit the measurement report to the RAN node 1.

[0211] Both the RAN node 1 and the RAN node 2 adopt the CU and DU separated architecture. In the RAN node 1, the DU is configured to transmit the cross-link interference management information (e.g., the measurement configuration information) to the CU. Further, the CU can be further configured to transmit the received measurement report to the DU. In the RAN node 2, the CU is configured to transmit the cross-link interference management information (e.g., the measurement configuration information) to the DU. Further, the DU can be further configured to transmit the measurement report to the CU.

[0212] In another example, the first node can further transmit the reference signal to the second node, and further receive, from the second node, a measurement result based on the reference signal or a mitigation request of the cross-link interference. In some embodiments, the first node can further transmit, to the second node, the measurement configuration information based on the mitigation request of the cross-link interference.

[0213] As shown in FIG. 9, RAN node2 can send CLI reference signals to RAN node1. And RAN node1 can send CLI-MI, including measurement configuration information, to RAN node2. RAN node1 can send measurement reports to RAN node2.

[0214] Both RAN node1 and RAN node2 adopt CU and DU separated architecture. In the interference source node RAN node1, the DU is used to transmit the cross-link interference management information (e.g. measurement configuration information) to the CU. Further, the DU can also be used to transmit the received measurement reports to the CU. In the interfered node RAN node2, the CU is used to transmit the cross-link interference management information (e.g. measurement configuration information) to the DU. Further, the CU can also be used to transmit the measurement reports to the DU.

[0215] In some embodiments, the measurement result report of the above-mentioned reference signal or the mitigation request of the cross-link interference includes at least one of the following: associated measurement object or measurement configuration information; coordination information; the beam information with the highest measurement result, e.g. the strongest beam information, the beam information of the interference source, SSB index or CSI-RS index, measured; at least one of the measurement result, e.g. reference signal received power (RSRP), reference signal received quality (RSRQ), received signal strength indication (RSSI) or channel quality indication (CQI) or signal to noise ratio (SINR); the cell information of the reference signal transmission corresponding to the measurement result, e.g. cell ID, NR cell global identifier (NCGI), physical cell identifier (PCI), RAN node ID, etc.; the cell information of the reference signal receiver corresponding to the measurement result; the cell information of the interference source causing the cross-link interference, e.g. the Cell ID, NCGI, PCI, RAN node ID, etc. of the interference source cell; the cell information of the interference caused by the cross-link interference, e.g. the Cell ID, NCGI, PCI, RAN node ID, etc. of the interfered cell; the beam information of the cross-link interference, e.g. the beam information (e.g. SSB index or CSI-RS index) of the received reference signal;

[0216] Type information of the measurement result, e.g. inter subband measurement result or intra-subband measurement result;

[0217] The following parameters are considered: the location of the resource affected by cross-link interference; at least one of the uplink RSRP, RSRQ, RSSI, SINR, or CQI of the cell affected by cross-link interference; beam information for receiving measurement signals; at least one of the transmit RSRP, RSRQ, RSSI, CQI, or power determined based on the measurement results; SSB information or CSI-RS information determined based on the measurement results; measurement quantities used to sort the measurement results, such as at least one of RSRP, RSRQ, RSSI, SINR, or CQI; measurement type, such as Layer 1 measurement or Layer 3 measurement, where Layer 1 measurement is typically a physical layer measurement result and Layer 3 measurement is a higher layer measurement result, and higher layer measurements smooth the measurement results; the start time of measurement or the time when the measurement result is obtained, such as absolute time, Coordinated Universal Time (UTC), frame number, subframe number, symbol, etc.; invalid measurement results based on the SSB information or CSI-RS information corresponding to the invalid measurement results; and the signal parameter threshold that triggers the self-protection mechanism.

[0218] It should be noted that a CLI mitigation request can be viewed as a request involving Measurement Resource Configuration or Measurement Configuration. When a CLI mitigation request is received by a RAN node or DU, it may contain detailed instructions or parameters on how to mitigate a specific CLI issue. These instructions may include the measurement resources or measurement configurations that need to be configured to monitor, analyze, and potentially mitigate the CLI issue.

[0219] In some embodiments, the triggering event for the above measurement report includes at least one of the following:

[0220] Example 1: The measurement result of the neighboring cell CLI RS (SSB or CSI-RS) is higher than the configured threshold.

[0221] Entering condition: Ms–Hys>Thresh.

[0222] Leaving condition: Ms + Hys <Thresh。

[0223] Ms can be the measurement result, Hys is the hysteresis parameter, and Thresh is the threshold value. That is, if the measurement result of the neighboring cell CLI RS (SSB or CSI-RS) is greater than the threshold Thresh, and the difference between it and the threshold Thresh exceeds Hys, as shown in Figure 10A, then event Event1 is triggered.

[0224] Example 2: The measurement result of the neighboring cell CLI-RS is lower than the configured threshold.

[0225] Entry requirements: Ms+Hys <Thresh。

[0226] Exit condition: Ms–Hys>Thresh.

[0227] If the measurement result of the neighboring cell CLI RS (SSB or CSI-RS) is below the threshold Thresh and exceeds Hys, as shown in Figure 10B, then Event 2 is triggered.

[0228] Example 3: The measurement result (uplink or downlink) of the serving cell is higher than the configured threshold.

[0229] Entry condition: Ms–Hys>Thresh.

[0230] Leaving conditions: Ms+Hys <Thresh。

[0231] Ms can be the measurement result, Hys is the hysteresis parameter, and Thresh is the threshold value. That is, if the measurement result of the serving cell (DL or UL) is better than the threshold and exceeds Hys, as shown in Figure 10A, Event 3 is triggered.

[0232] Example 4: The serving cell measurement result (uplink or downlink) is lower than the configured threshold.

[0233] Entry requirements: Ms+Hys <Thresh。

[0234] Exit condition: Ms–Hys>Thresh.

[0235] If the measurement result of the serving cell is lower than the threshold by more than Hys, as shown in Figure 10B, Event 4 is triggered.

[0236] Example 5: The measurement results of the neighboring cell CLI RS (SSB or CSI-RS) are higher than the measurement results (uplink or downlink) of its serving cell by a certain offset.

[0237] Entry condition: Mn+Ofn+Ocn–Hys>Mp+Ofp+Ocp+Off.

[0238] Exit condition: Mn + Ofn + Ocn + Hys <Mp+Ofp+Ocp+Off。

[0239] As shown in Figure 10C, Mn represents the neighboring cell measurement result, and Mp represents the serving cell measurement result; Ofn and Ocn are the offsets configured in the neighboring cell parameter (offsetMO), Ofp and Ocp are the offsets configured in the serving cell parameter (cellIndividualOffset), Ofn is the offset configured in the measurement object, and Ocn is the offset configured in the measurement report; Off is the offset configured for the 3-event (3-Offset). That is, based on the offsets, this event is triggered when the difference between the neighboring cell measurement result and the serving cell measurement result exceeds Hys.

[0240] Example 6: The measurement results of the neighboring cell CLI RS (SSB or CSI-RS) are lower than the measurement results (uplink or downlink) of its serving cell by a certain offset.

[0241] Entry condition: Mn + Ofn + Ocn – Hys <Mp+Ofp+Ocp+Off。

[0242] Exit condition: Mn + Ofn + Ocn + Hys > Mp + Ofp + Ocp + Off

[0243] As shown in Figure 10C, Mn represents the neighboring cell measurement result, and Mp represents the serving cell measurement result; Ofn and Ocn are the offsets configured for the neighboring cell parameters, Ofp and Ocp are the offsets configured for the serving cell parameters, Ofn is the offset configured in the measurement object, and Ocn is the offset configured in the measurement report; Off is the offset configured for the 3-event (3-Offset). That is, based on the offsets, this event is triggered when the difference between the neighboring cell measurement result and the serving cell measurement result exceeds Hys.

[0244] In some cases, excessively strong reference signals may cause the receiver at the signal receiver to shut down as a self-protection mechanism, resulting in the inability to obtain valid measurement results. Therefore, the Measurement Report or CLI Mitigation Request may also include:

[0245] The measurement result is invalid and / or the corresponding SSB index or CSI RS index is invalid.

[0246] Self-protection signal thresholds (such as RSRP, RSRQ, RSSI, or CQI) are used to enable the signal receiver to obtain measurement results (the measurement results are invalid if they are above this threshold).

[0247] In some embodiments, based on the measurement configuration of the reference signal described above, the first node may also send cross-link interference management configuration response information to the second node.

[0248] The configuration response information indicates whether the cross-link interference management configuration was successful or failed. In the event of a cross-link interference management configuration failure, the configuration response information includes at least one of the following:

[0249] The reasons for configuration failure include lack of CLI capability or resource conflicts.

[0250] Measurement resource information that can be configured for cross-link interference management, or current measurement resource information that cannot be used for cross-link interference management, such as recommended or deprecated measurement resource configurations.

[0251] Coordinate information;

[0252] Cell information where configuration resource conflicts occur: For example, when a conflict is detected, the cell information of the conflicting measurement resource configuration and / or configuration associated with it can be sent.

[0253] In addition, if the cross-link interference management configuration is successful, the configuration response information may include an index of the measurement configuration that was successfully applied.

[0254] (6) Coordinate information.

[0255] In some embodiments, the coordination information includes at least one of the following:

[0256] Coordination information for measurement configuration information; measurement configuration information and / or cell information where configuration resource conflicts occur; coordination information for measurement resource information; coordination information for beam information; coordination information for at least one of RSRP, RSRQ, RSSI, CQI, or power; coordination information for spatial division information.

[0257] The coordination information for measurement configuration can include recommended or not recommended measurement configuration information. For example, when a disturbed node needs to measure multiple interference source nodes, the reference signal receiver (i.e., the disturbed node) can provide recommended or not recommended measurement configuration information to the sender (i.e., the interference source node) based on network conditions, load, and interference levels. This helps optimize the measurement process and reduce unnecessary resource consumption and interference.

[0258] Measurement configuration information and / or cell information indicating a configuration resource conflict, such as the detected conflict type, the conflicting measurement configuration, and associated cell information. For example, in the event of a conflict between reference signals transmitted by multiple reference signal transmitters, the first node can detect the conflict and provide the measurement configuration information and / or cell information indicating the configuration resource conflict to the network or relevant nodes.

[0259] Coordination information for measurement resources can include information used to indicate which measurement resources are configured to be disabled. For example, nodes can exchange mutating information, which can disable the transmission of specific SSB indexes or CSI-RS.

[0260] The coordination information for beam information may include recommended, unrecommended, or restricted beam information, and / or, beam pairs corresponding to recommended or unrecommended time-domain or frequency-domain resources.

[0261] Coordination information for at least one of RSRP, RSRQ, RSSI, CQI, or power includes at least one of recommended, non-recommended, or restricted RSRP, RSRQ, RSSI, CQI, or power, and / or, associated resource time-frequency location / resource period / cell information / beam information.

[0262] Coordination information for spatial division includes recommended, unrecommended, or restricted spatial division information, such as beam information, i.e., resource time-frequency location / resource period / cell information associated with SSB index or CSI-RS index.

[0263] In some embodiments, the spatial division information can be a beam pair, including the transmit beam of RAN node1 and the transmit beam of RAN node2. Alternatively, it can be the transmit beam of RAN node1 and the receive beam of RAN node2. When RAN node2 provides coordination information to RAN node1, the coordination information is associated with a beam pair, meaning the coordination information is only effective for that beam pair.

[0264] The following describes the transmission process of cross-link interference management information:

[0265] In a standalone access (SA) deployment scenario, RAN node1 can send link interference management information to RAN node2. In some embodiments, RAN node1 can be the interference source node, and RAN node2 can be the affected node.

[0266] In a RAN node employing a CU-DU separation architecture, the DU can send CLI-MI (via F1 SETUP REQUEST, GNB-DU CONFIGURATION UPDATE) to the CU. The CU can merge information from multiple DUs and then forward it to other RAN nodes. Furthermore, upon receiving CLI-MIs from other RAN nodes, the CU forwards them to the DUs (via GNB-CU CONFIGURATION UPDATE).

[0267] In a dual-connectivity scenario, the secondary node (SN1) sends the CLI-MI to the primary node (MN1) (via EN-DC X2 SETUP REQUEST, EN-DC CONFIGURATION UPDATE, XN SETUP Request, NG-RAN node Configuration Update). MN1 (directly or via another MN2) can forward the CLI-MI to another related secondary node (SN2). In this case, there are multiple primary nodes, and the CLI-MI may include neighbor cell information. This neighbor cell information is used to determine the transmission path of cross-link interference management information between nodes. For example, the neighbor cell ID associated with the CLI-MI is used by the MN to identify which SN to forward it to. In some embodiments, the CLI-MI of neighboring cells may also be included.

[0268] For example, the transmission of cross-link interference management information may include the following S1-S3:

[0269] S1 and SN1 send a message to MN1. This message may include at least one of the following:

[0270] Serving cell information includes the cell ID information of SN1, the identifier of the RAN node, the CLI-MI of SN1, and the associated neighboring cell (e.g., SN2) ID (NR-PCI, NR CGI, or RAN node ID). In some embodiments, it may also include the CLI-MI of the neighboring cells.

[0271] Neighbor cell information, such as the neighbor cell ID information of SN1.

[0272] Then execute S21 or S22.

[0273] S21 and MN1, by identifying the neighboring cell ID associated with CLI-MI, send the following information to the corresponding SN2:

[0274] Serving cell information, which includes the cell ID information of MN1;

[0275] Neighbor cell information, which includes the cell ID information of SN1 and the CLI-MI of SN1.

[0276] S22 and MN1, by identifying the neighboring cell ID associated with the link interference information, send the following information to the corresponding MN2:

[0277] The service cell information includes the cell ID information of MN1;

[0278] Neighbor cell information includes the cell ID information of SN1, the CLI-MI of SN1, and its associated neighbor cell (e.g., SN2) ID (NR-PCI or NR CGI). In some embodiments, it may also include the CLI-MI of the neighboring cell.

[0279] S3 and MN2 identify the neighbor cell ID information associated with the CLI-MI of cell SN1 in the neighboring cells, and send the following information to SN2:

[0280] The service cell information includes the cell ID information of MN1;

[0281] Neighboring cell information, including the cell ID information of SN1 and the CLI-MI of SN1.

[0282] As shown in Figure 11, taking CLI-MI containing measurement configuration information and measurement reports as an example, in the dual-connection structure, RAN node1 and 2 can be secondary nodes, and RAN node3 and 4 can be master nodes.

[0283] 1. The DU of RAN node1 sends the following information to the CU of RAN node1:

[0284] The CLI-MI of the serving cell of RAN node1, such as measurement configuration information, and associated cell information, such as cell information of RAN node2. In some embodiments, measurement configuration information (e.g., SSB index or CSI RS index) of the associated RAN node2 may also be provided.

[0285] 1a. The DU of RAN node3 / 4 sends the following information to the CU of RAN node3 / 4:

[0286] The CLI-MI of the serving cell of RAN node3 / 4, such as measurement configuration information, and associated cell information, such as cell information of RAN node2. In some embodiments, measurement configuration information of the associated RAN node2 (e.g., SSB index or CSI RS index) may also be provided.

[0287] 2. RAN node1 or RAN node1 CU sends the following information to RAN node3 or RAN node3 CU:

[0288] The CLI-MI of the serving cell of RAN node1, such as measurement configuration information, and the associated cell information, such as the cell information of RAN node2. In some embodiments, the measurement configuration information of the associated RAN node2 (e.g., SSB index or CSI RS index) may also be provided.

[0289] RAN node3 can forward the CLI-MI of the serving cell of RAN node1 to RAN node4 through the information of the associated RAN node2.

[0290] 3. RAN node3 or RAN node3 CU sends the following information to RAN node4 or RAN node4 CU:

[0291] The CLI-MI of the serving cell of RAN node3, such as measurement configuration information, and the associated cell information, such as cell information of RAN node2, may also be provided in some embodiments, including measurement configuration information of the associated RAN node2 (such as SSB index or CSI RS index).

[0292] The CLI-MI of neighboring cells of RAN node3, for example, the CLI-MI of the serving cell of RAN node1, includes measurement configuration information and associated neighbor cell information, i.e., cell information of RAN node2. In some embodiments, measurement configuration information of associated RAN node2 (e.g., SSB index or CSI RS index) may also be provided.

[0293] Based on the information from the associated RAN node2, RAN node4 determines which node the CLI MI of the serving cell of RAN node3 and the CLI-MI of the serving cell of RAN node1 should be forwarded to.

[0294] 4. RAN node4 or RAN node4 CU sends the following information to RAN node2 or RAN node2 CU:

[0295] The CLI-MI of the serving cell of RAN node4, such as measurement configuration information, and the associated cell information, such as cell information of RAN node2, may also be provided in some embodiments, including measurement configuration information of the associated RAN node2 (such as SSB index or CSI RS index).

[0296] The CLI-MI of neighboring cells of RAN node4, such as the CLI-MI of the serving cell of RAN node1 / 3, includes measurement configuration information and associated cell information, i.e., cell information of RAN node2. In some embodiments, measurement configuration information of associated RAN node2 (e.g., SSB index or CSI RS index) may also be provided.

[0297] 5. The CU of RAN node2 sends the following information to the DU of RAN node2:

[0298] Each of RAN node 1, 3, and 4 has a CLI-MI, which includes measurement configuration information.

[0299] 6. The DU of RAN node2 completes the measurement of the reference signals transmitted by RAN nodes1,2, and3, and feeds back the following information to the CU of RAN node2:

[0300] CLI-MI of the RAN node2 serving cell, such as measurement report information and / or associated neighbor cell information.

[0301] 7. RAN node2 sends the following measurement report to RAN node4:

[0302] CLI-MI of the RAN node2 serving cell, such as measurement report information and / or associated neighbor cell information.

[0303] By using the cell information associated with the measurement reports, RAN node4 can identify which measurement results correspond to the measurement configuration information of the cell served by RAN node4, and which measurement results need to be forwarded to other RAN nodes.

[0304] 8. RAN node4 sends the following information to RAN node3 or RAN node3 CU:

[0305] CLI-MI of neighboring cells in RAN node4, for example, CLI-MI of the serving cell in RAN node2 (e.g., measurement reports and associated neighboring cell information).

[0306] By using the cell information associated with the measurement reports, RAN node3 can identify which measurement results correspond to the measurement configuration information of the cell served by RAN node3, and which measurement results need to be forwarded to other RAN nodes.

[0307] 9. RAN node3 sends the following information to RAN node1 or RAN node1 CU:

[0308] CLI-MI of neighboring cells in RAN node3, for example, CLI-MI of the serving cell in RAN node2 (e.g., measurement reports and associated neighboring cell information).

[0309] 10. The CU of RAN node1 will forward the following message to the DU of RAN node1:

[0310] CLI-MI of neighboring cells in RAN node3, for example, CLI-MI of the serving cell in RAN node2 (e.g., measurement reports and associated neighboring cell information).

[0311] In one example, as shown in Figure 12, RAN node1 is the interfering base station and RAN node2 is the disturbed base station. Beam pairing is used to transmit a reference signal for the interfering source, and the signal transmission is adjusted based on the beam measurement results fed back by the disturbed base station.

[0312] If Sa0 or RAN node1 detects interference, it sends a measurement configuration request to RAN node2.

[0313] A measurement configuration request can be a CLI mitigation request.

[0314] Sa1 and RAN node1 send measurement configuration to RAN node2.

[0315] The measurement configuration of RAN node1 may come from its DU.

[0316] After receiving the measurement configuration, the CU of RAN node2 forwards the received measurement configuration to the DU. The measurement configuration may contain an indication of whether the measurement configuration is active, and the CU may only forward the active measurement configurations to its DU.

[0317] Sa11: If the CU of RAN node1 receives measurement configurations from multiple DUs, RAN node1 can merge the measurement configurations of the multiple DUs. At the same time, for any conflicting configurations that may exist, such as two DUs having the same measurement resources and period, the CU can request the DUs to reconfigure and indicate the recommended, unrecommended, and conflicting measurement configurations.

[0318] Sa2 and RAN node2 send a configuration response back to RAN node1.

[0319] The configuration response may include: indicating a measurement configuration that was successfully applied, indicating a measurement configuration that failed to be applied, indicating the reason for the measurement configuration application failure, indicating recommended and not recommended measurement configurations, indicating conflicting measurement configurations, and coordination information.

[0320] Sa21. In some embodiments, RAN node1 can immediately send a reference signal for the measurement configuration sent to RAN node2.

[0321] Sa3. Based on the (already activated) measurement configuration, RAN node2 can measure the reference signal or detect CLI interference based on UE measurement or CLI-RSSI measurement.

[0322] RAN node2 sends an interference mitigation request to RAN node1. The interference mitigation request may include at least one of the following: measurement results, recommended or not recommended measurement configurations, and conflicting measurement configurations.

[0323] In some embodiments, if RAN node2 has never received a measurement configuration from RAN node1, it may send a measurement configuration request to RAN node1.

[0324] Sa4. After receiving an interference mitigation request, RAN node1 can choose to activate or update the previously sent measurement configuration, or generate a new measurement configuration.

[0325] Sa41 and RAN node2 can send back configuration response messages.

[0326] Sa5 and RAN node2 send the measurement results to RAN node1.

[0327] For example, RAN node1 sends a CLI reference signal, RAN node2 measures the CLI reference signal, and then RAN node2 sends the measurement result to RAN node1.

[0328] The measurement results include: interference source cell information, interfered cell information, interference source beam information, interfered beam information, recommended or not recommended measurement configurations, and measurement configurations indicating conflicts.

[0329] Sa6 and RAN node1 adjust the transmit beam based on the measurement results, or update or deactivate the measurement configuration if interference is detected to be eliminated.

[0330] In another example, as shown in Figure 13, RAN node1 is the interfering base station and RAN node2 is the disturbed base station. Beam nulling is the process by which the interfering source derives its own transmission parameters and adjusts its signal transmission based on the reference signal sent by the disturbed base station.

[0331] Sb1 and RAN node2 send measurement configuration to RAN node1.

[0332] The measurement configuration of RAN node2 may come from its DU.

[0333] After receiving the measurement configuration, the CU of RAN node1 forwards the received measurement configuration to the DU.

[0334] Sb2 and RAN node1 send configuration responses.

[0335] Then, RAN node1 may optionally transmit a reference signal.

[0336] Sb21. In some embodiments, RAN node1 can immediately send a reference signal for the measurement configuration sent to RAN node2.

[0337] When Sb3 and RAN node2 detect interference, they send a CLI mitigation request, and optionally send an activation or update measurement configuration.

[0338] Sb31 and RAN node1 decide to perform beam nulling. If they have never received a measurement configuration, they send a measurement configuration request to RAN node2. RAN node2 responds with the measurement configuration. RAN node1 then responds with a measurement configuration response. The measurement configuration request may include coordination information.

[0339] Sb4 and RAN node1 adjust their transmitted signals based on the measurement results of the reference signal.

[0340] For example, RAN node1 can perform interference detection based on a reference signal and adjust the power of data transmission.

[0341] In some embodiments, when RAN node2 detects no interference, it can determine whether to deactivate or update the measurement configuration.

[0342] Based on the technical solution provided in this disclosure, for cross-link interference, the disturbed node and the interference source node (the first node and the second node) can exchange cross-link interference management information. This cross-link interference management information can be used for the mitigation management of cross-link interference for the disturbed node. In this way, the disturbed node and the interference source node exchange link interference management information to facilitate subsequent cross-link interference mitigation management, thereby improving system performance and optimizing resource utilization.

[0343] In some embodiments, as shown in FIG14, this disclosure provides another interference management method applied to a second node. The interference management method includes step S201.

[0344] S201. Send cross-link interference management information to the first node; wherein, the cross-link interference management information is used for cross-link interference mitigation management.

[0345] In some embodiments, the cross-link interference management information includes at least one of the following: subband full-duplex SBFD resource configuration information; SBFD-based random access resource configuration information; SBFD-based bandwidth portion BWP configuration information; indication information on whether to enable SBFD-based random access; indication information on whether to enable SBFD-based bandwidth portion BWP; SBFD cell information; measurement configuration information; and coordination information.

[0346] In some embodiments, the SBFD resource configuration information includes at least one of the following: the period of the SBFD resource; the subcarrier spacing associated with the SBFD resource; the cell associated with the SBFD resource; the SBFD time-domain resource location information; the SBFD frequency-domain resource location information; and the status information of whether the SBFD resource is enabled.

[0347] In some embodiments, SBFD cell information includes at least one of the following:

[0348] Indication information on whether the cell supports SBFD; a first field, wherein the first field is used to instruct the SBFD terminal to determine other cells that can support SBFD in the current frequency for cell reselection when the current cell is blocked by the SBFD terminal; indication information on whether the cell is blocked by the SBFD terminal; information on cells that support SBFD provided by cells that do not support SBFD.

[0349] In some embodiments, the SBFD resource configuration information includes at least one of the following: the period of the SBFD resource; the subcarrier spacing associated with the SBFD resource; the cell associated with the SBFD resource; the SBFD time-domain resource location information; the SBFD frequency-domain resource location information; and the status information of whether the SBFD resource is enabled.

[0350] In some embodiments, the SBFD time-domain resource location information includes at least one of the following: index information of SBFD time slots; number of consecutive SBFD time slots; start and / or end positions of SBFD time slots; start and / or end position offsets of SBFD time slots; time slot type of SBFD time slots; link direction corresponding to the symbols in SBFD time slots; index information of SBFD symbols; number of consecutive SBFD symbols; start and / or end positions of SBFD symbols; start and / or end position offsets of SBFD symbols; symbol type of SBFD symbols; link direction corresponding to SBFD symbols.

[0351] In some embodiments, the SBFD frequency domain resource location information includes at least one of the following: subcarrier spacing; the number of physical resource blocks contained in a subband; the bandwidth of the downlink subband, uplink subband, or guard subband; the starting position of the downlink subband, uplink subband, or guard subband in the frequency domain; the offset of the starting position of the downlink subband, uplink subband, or guard subband in the frequency domain; subband index information; subband type information; physical resource block index information; and physical resource block type information.

[0352] In some embodiments, the SBFD cell information includes at least one of the following: indication information on whether the cell supports SBFD; a first field, wherein the first field is used to instruct the SBFD terminal to determine other cells that can support SBFD in the current frequency for cell reselection when the current cell is a prohibited cell corresponding to the SBFD terminal; indication information on whether the cell is a prohibited cell corresponding to the SBFD terminal; and SBFD-supporting cell information provided by cells that do not support SBFD.

[0353] In some embodiments, the measurement configuration information includes at least one of the following: measurement report configuration information; measurement object configuration information; measurement gap configuration information; measurement quantity; measurement quantity for sorting measurement results; measurement report triggering period; measurement report triggering event; measurement report reporting delay time limit; threshold for triggering measurement; duration for meeting triggering conditions; layer 3 filter parameters.

[0354] In some embodiments, the measurement object configuration information includes at least one of the following: Synchronization Signal Block (SSB) resource configuration information; index information of SSB resource configuration information; Channel State Information Reference Signal (CSI-RS) resource configuration information; index information of CSI-RS resource configuration information; measurement purpose corresponding to the measurement resource configuration information; the SSB or CSI-RS to be measured; SSB measurement time configuration information; reference signal transmitting cell information associated with the measurement configuration; reference signal receiving cell information associated with the measurement configuration; subcarrier spacing; and association information between CSI-RS measurement resources and SSB.

[0355] In some embodiments, the coordination information includes at least one of the following: coordination information for measurement configuration information; measurement configuration information and / or cell information where configuration resource conflicts occur; coordination information for measurement resource information; coordination information for beam information; coordination information for at least one of RSRP, RSRQ, RSSI, CQI, or power; and coordination information for spatial division information.

[0356] In some embodiments, the second node may also receive a reference signal from the second node, and, based on the reference signal, send measurement results of the reference signal or a request for mitigation of cross-link interference to the second node.

[0357] In some embodiments, the second node may also send a reference signal to the second node. The second node receives measurement results based on the reference signal or requests for mitigation of cross-link interference from the second node.

[0358] In some embodiments, the measurement results of the reference signal or the request for mitigation of cross-link interference includes at least one of the following: coordination information; information on the beam with the highest measured result; at least one of the measured reference signal received power (RSRP), reference signal received quality (RSRQ), received signal strength indication (RSSI), channel quality indication (CQI), or signal-to-noise ratio (SINR); cell information causing cross-link interference; cell information affected by cross-link interference; source cell of the signal transmitter associated with the reference signal; target cell of the signal receiver of the reference signal; beam information affected by cross-link interference; type information of the measurement result; and information on the cross-link interference. The location of the interfering resource; at least one of the uplink RSRP, RSRQ, RSSI, SINR, or CQI of the cell affected by cross-link interference; beam information used to receive the measurement signal; at least one of the transmit RSRP, RSRQ, RSSI, CQI, or power determined based on the measurement results; SSB information or CSI-RS information determined based on the measurement results; the measurement quantity used to sort the measurement results; the measurement type; the start time of the measurement or the time when the measurement result is obtained; invalid measurement results based on the SSB information or CSI-RS information corresponding to the invalid measurement results; and the threshold of the signal parameter that triggers the self-protection mechanism.

[0359] In some embodiments, the second node adopts a CU and DU separation architecture; the DU is used to transmit cross-link interference management information to the CU.

[0360] In some embodiments, configuration response information for cross-link interference management can also be received from the second node; the configuration response information is used to indicate whether the cross-link interference management configuration is successful or fails; wherein, in the case of cross-link interference management configuration failure, the configuration response information includes at least one of the following: the reason for the configuration failure; measurement resource information that can be used for cross-link interference management configuration, or the current measurement resource information is not available for cross-link interference management; cell information where configuration resource conflict occurs.

[0361] Furthermore, for a detailed description of S201, please refer to the relevant description of S101 above, which will not be repeated here.

[0362] Based on the technical solution provided in this disclosure, link interference management information is transmitted between the disturbed node and the interference source node to facilitate subsequent cross-link interference mitigation management, thereby improving system performance and optimizing resource utilization.

[0363] The foregoing primarily describes the solution provided in this disclosure from the perspective of interaction between various communication nodes. It is understood that each communication node, in order to achieve the aforementioned functions, includes corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should readily recognize that, based on the algorithmic steps of the examples described in conjunction with the embodiments disclosed herein, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0364] Figure 15 is a schematic diagram of the composition of a communication device provided in an embodiment of this disclosure. As shown in Figure 15, the communication device 1500 is applied to a first node and includes a receiving module 1501. In some embodiments, the communication device 1500 may further include a transmitting module 1502.

[0365] The receiving module 1501 is used to receive cross-link interference management information from the second node; wherein the cross-link interference management information is used for cross-link interference mitigation management.

[0366] In some embodiments, the cross-link interference management information includes at least one of the following: subband full-duplex SBFD resource configuration information; SBFD-based random access resource configuration information; SBFD-based bandwidth portion BWP; indication information on whether to enable SBFD-based random access; indication information on whether to enable SBFD-based bandwidth portion BWP; SBFD cell information; measurement configuration information; and coordination information.

[0367] In some embodiments, the SBFD resource configuration information includes at least one of the following: the period of the SBFD resource; the subcarrier spacing associated with the SBFD resource; the cell associated with the SBFD resource; the SBFD time-domain resource location information; the SBFD frequency-domain resource location information; and the status information of whether the SBFD resource is enabled.

[0368] In some embodiments, the SBFD time-domain resource location information includes at least one of the following: index information of SBFD time slots; number of consecutive SBFD time slots; start and / or end positions of SBFD time slots; start and / or end position offsets of SBFD time slots; time slot type of SBFD time slots; link direction corresponding to the symbols in SBFD time slots; index information of SBFD symbols; number of consecutive SBFD symbols; start and / or end positions of SBFD symbols; start and / or end position offsets of SBFD symbols; symbol type of SBFD symbols; link direction corresponding to SBFD symbols.

[0369] In some embodiments, the SBFD frequency domain resource location information includes at least one of the following: subcarrier spacing; the number of physical resource blocks contained in a subband; the bandwidth of the downlink subband, uplink subband, or guard subband; the starting position of the downlink subband, uplink subband, or guard subband in the frequency domain; the offset of the starting position of the downlink subband, uplink subband, or guard subband in the frequency domain; subband index information; subband type information; physical resource block index information; and physical resource block type information.

[0370] In some embodiments, SBFD cell information includes at least one of the following:

[0371] Indication information on whether the cell supports SBFD; a first field, wherein the first field is used to instruct the SBFD terminal to determine other cells that can support SBFD in the current frequency for cell reselection when the current cell is a prohibited cell corresponding to the SBFD terminal; indication information on whether the cell is a prohibited cell corresponding to the SBFD terminal; information on cells that support SBFD provided by cells that do not support SBFD.

[0372] In some embodiments, the measurement configuration information includes at least one of the following: measurement report configuration information; measurement object configuration information; measurement resource configuration information; measurement gap configuration information; measurement quantity; measurement quantity for sorting measurement results; measurement report triggering period; measurement report triggering event; measurement report reporting delay time limit; threshold for triggering measurement; duration for meeting triggering conditions; layer 3 filter parameters.

[0373] In some embodiments, the measurement resource configuration information includes at least one of the following: Synchronization Signal Block (SSB) resource configuration information; index information of SSB resource configuration information; Channel State Information Reference Signal (CSI-RS) resource configuration information; index information of CSI-RS resource configuration information; measurement purpose corresponding to the measurement resource configuration information; SSB or CSI-RS to be measured; SSB measurement time configuration information; cell information associated with the measurement configuration; subcarrier spacing; and association information between CSI-RS measurement resources and SSB.

[0374] In some embodiments, the transmitting module 1502 is configured to transmit a reference signal to the second node. The receiving module 1501 is further configured to receive measurement results based on the reference signal or requests for mitigation of cross-link interference from the second node.

[0375] In some embodiments, the sending module 1502 is further configured to send measurement configuration information to the second node based on a cross-link interference mitigation request.

[0376] In some embodiments, the receiving module 1501 is further configured to receive a reference signal from the second node. The transmitting module 1502 is further configured to transmit, based on the reference signal, a measurement result of the reference signal or a request for mitigation of cross-link interference to the second node.

[0377] In some embodiments, the measurement results of the reference signal or the request for mitigation of cross-link interference includes at least one of the following: the beam information of the highest measured result; coordination information; at least one of the measured reference signal received power (RSRP), reference signal received quality (RSRQ), received signal strength indication (RSSI), channel quality indication (CQI), or signal-to-noise ratio (SINR); cell information causing cross-link interference; cell information affected by cross-link interference; source cell of the signal transmitter associated with the reference signal; target cell of the signal receiver of the reference signal; beam information affected by cross-link interference; type information of the measurement result; and information on the cross-link interference. The location of the interfering resource; at least one of the uplink RSRP, RSRQ, RSSI, SINR, or CQI of the cell affected by cross-link interference; beam information used to receive the measurement signal; at least one of the transmit RSRP, RSRQ, RSSI, CQI, or power determined based on the measurement results; SSB information or CSI-RS information determined based on the measurement results; the measurement quantity used to sort the measurement results; the measurement type; the start time of the measurement or the time when the measurement result is obtained; invalid measurement results based on the SSB information or CSI-RS information corresponding to the invalid measurement results; and the threshold of the signal parameter that triggers the self-protection mechanism.

[0378] In some embodiments, the coordination information includes at least one of the following: coordination information for measurement configuration information; measurement configuration information and / or cell information where configuration resource conflicts occur; coordination information for measurement resource information; coordination information for beam information; coordination information for at least one of RSRP, RSRQ, RSSI, CQI, or power; and coordination information for spatial division information.

[0379] In some embodiments, the first node adopts a separate architecture of central unit (CU) and distributed unit (DU); the CU is used to transmit cross-link interference management information to the DU.

[0380] In some embodiments, the second node adopts a CU and DU separation architecture; the DU is used to transmit cross-link interference management information to the CU.

[0381] In some embodiments, the receiving module 1501 is further configured to receive cross-link interference management information from the second node through the master node.

[0382] In some embodiments, there are multiple master nodes, and the cross-link interference management information includes neighbor cell information, which is used to determine the transmission path of the cross-link interference management information between the nodes.

[0383] In some embodiments, the sending module 1502 is further configured to send cross-link interference management configuration response information to the second node; the configuration response information is used to indicate whether the cross-link interference management configuration is successful or fails; wherein, in the case of cross-link interference management configuration failure, the configuration response information includes at least one of the following: the reason for the configuration failure; measurement resource information that can be used for cross-link interference management configuration, or the current measurement resource information that cannot be used for cross-link interference management; and cell information where a configuration resource conflict occurs.

[0384] For a more detailed description of the receiving module 1501 and the transmitting module 1502, as well as a more detailed description of their respective technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0385] Figure 16 is a schematic diagram of the composition of a communication device provided in an embodiment of this disclosure. As shown in Figure 16, the communication device 1600 is applied to a second node and includes a transmitting module 1601 and a receiving module 1602.

[0386] The sending module 1601 is used to send cross-link interference management information to the first node; wherein, the cross-link interference management information is used for cross-link interference mitigation management.

[0387] In some embodiments, the cross-link interference management information includes at least one of the following: SBFD resource configuration information; SBFD-based random access resource configuration information; SBFD-based BWP configuration information; indication information on whether to enable SBFD-based random access; indication information on whether to enable SBFD-based bandwidth portion BWP; SBFD cell information; measurement configuration information; and coordination information.

[0388] In some embodiments, the SBFD resource configuration information includes at least one of the following: the period of the SBFD resource; the subcarrier spacing associated with the SBFD resource; the cell associated with the SBFD resource; the SBFD time-domain resource location information; the SBFD frequency-domain resource location information; and the status information of whether the SBFD resource is enabled.

[0389] In some embodiments, SBFD cell information includes at least one of the following:

[0390] Indication information on whether the cell supports SBFD; a first field, wherein the first field is used to instruct the SBFD terminal to determine other cells that can support SBFD in the current frequency for cell reselection when the current cell is blocked by the SBFD terminal; indication information on whether the cell is blocked by the SBFD terminal; information on cells that support SBFD provided by cells that do not support SBFD.

[0391] In some embodiments, the measurement configuration information includes at least one of the following: measurement report configuration information; measurement object configuration information; measurement gap configuration information; measurement quantity; measurement quantity for sorting measurement results; measurement report triggering period; measurement report triggering event; measurement report reporting delay time limit; threshold for triggering measurement; duration for meeting triggering conditions; layer 3 filter parameters.

[0392] In some embodiments, the receiving module 1602 is configured to receive a reference signal from the first node. The transmitting module 1601 is further configured to transmit, based on the reference signal, a measurement result of the reference signal or a request for mitigation of cross-link interference to the first node.

[0393] In some embodiments, the transmitting module 1601 is further configured to transmit a reference signal to the first node. The receiving module 1602 is further configured to receive measurement results based on the reference signal or a request for mitigation of cross-link interference from the first node.

[0394] In some embodiments, the second node adopts a CU and DU separation architecture; the DU is used to transmit cross-link interference management information to the CU.

[0395] In some embodiments, the receiving module 1602 is further configured to receive cross-link interference management configuration response information from the first node; the configuration response information is used to indicate whether the cross-link interference management configuration is successful or fails; wherein, in the case of cross-link interference management configuration failure, the configuration response information includes at least one of the following: the reason for the configuration failure; measurement resource information that can be used for cross-link interference management configuration, or the current measurement resource information that cannot be used for cross-link interference management; and cell information where a configuration resource conflict occurs.

[0396] For a more detailed description of the above-mentioned transmitting module 1601 and receiving module 1602, as well as a more detailed description of their respective technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0397] It should be noted that the modules in Figure 15 or Figure 16 can also be called units; for example, the transmitting module can be called a transmitting unit. Furthermore, in the embodiments shown in Figure 15 or Figure 16, the names of the modules may not be those shown in the figures; for example, the transmitting module can also be called a communication module, and the receiving module can also be called a communication module.

[0398] If the units or modules in Figure 15 or Figure 16 are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this disclosure, in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this disclosure. Storage media for storing computer software products include various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0399] When the functions of the integrated modules described above are implemented in hardware, this disclosure provides a schematic diagram of a communication device, which may be the communication device 1500 or the communication device 1600 described above. As shown in FIG17, the communication device 1700 includes: a memory 1701, a processor 1702, a communication interface 1703, and a bus 1704.

[0400] The memory 1701 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions; it may be a random access memory (RAM) or other type of dynamic storage device capable of storing dynamic information and instructions; it may also be an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device; or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0401] Processor 1702 may be a logic block, module, or circuit that implements or performs the various exemplary methods described in connection with this disclosure. Processor 1702 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. Processor 1702 may also implement or perform the various exemplary logic blocks, modules, and circuits described in connection with this disclosure. Processor 1702 may also be a combination that implements computational functions, such as a combination of one or more microprocessors, a combination of a DSP (digital signal processor) and a microprocessor, etc.

[0402] The communication interface 1703 is used to connect to other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0403] In some implementations, the memory 1701 may exist independently of the processor 1702. The memory 1701 can be connected to the processor 1702 via a bus 1704 and is used to store instructions or program code. When the processor 1702 calls and executes the instructions or program code stored in the memory 1701, it can implement the methods provided in the embodiments of this disclosure.

[0404] In some implementations, the memory 1701 can also be integrated with the processor 1702.

[0405] Bus 1704 can be an extended industry standard architecture (EISA) bus, etc. Bus 1704 can be divided into address bus, data bus, control bus, etc. For ease of representation, Bus 1704 is represented by only one thick line in Figure 17, but this does not mean that there is only one bus or one type of bus.

[0406] Through the above description of the implementation methods, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the equipment or device can be divided into different functional modules to complete all or part of the functions described above.

[0407] This disclosure also provides a computer-readable storage medium. All or part of the processes in the above method embodiments can be executed by computer instructions instructing related hardware. The program can be stored in the computer-readable storage medium, and when executed, it can include the processes of the above method embodiments. The computer-readable storage medium can be an internal storage unit of the device or apparatus of any of the foregoing embodiments, such as a hard disk or memory of a computer device. The computer-readable storage medium can also be an external storage device of the device or apparatus, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the device or apparatus. Further, the computer-readable storage medium can include both internal storage units and external storage devices of the device or apparatus. The computer-readable storage medium is used to store the computer program and other programs and data required by the device or apparatus. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output. The computer-readable storage medium includes non-transitory computer-readable storage media.

[0408] This disclosure also provides a computer program product comprising a computer program that, when run on a computer, causes the computer to perform any of the methods provided in the above embodiments.

[0409] Although this disclosure has been described herein in conjunction with various embodiments, those skilled in the art will understand and implement other variations of the disclosed embodiments by reviewing the accompanying drawings, the disclosure, and the appended claims in carrying out the claimed disclosure. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit can implement several functions listed in the claims. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce a good effect.

[0410] Although this disclosure has been described in conjunction with specific features and embodiments, it will be apparent that various modifications and combinations can be made therein without departing from the scope of this disclosure. Accordingly, this specification and drawings are merely illustrative descriptions of the disclosure as defined by the appended claims and are to be considered as covering any and all modifications, variations, combinations, or equivalents within the scope of this disclosure. It is obvious that those skilled in the art can make various alterations and modifications to this disclosure without departing from its scope. Thus, if such modifications and modifications of this disclosure fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and modifications.

[0411] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A method of interference management, applied to a first node, wherein, The method comprises: receiving cross-link interference management information from a second node, wherein the cross-link interference management information is used for mitigation management of cross-link interference.

2. The method of claim 1, wherein, The cross-link interference management information comprises at least one of: sub-band full duplex (SBFD) resource configuration information; resource configuration information for SBFD-based random access; bandwidth part (BWP) configuration information based on SBFD; indication information on whether to enable SBFD-based random access; indication information on whether to enable SBFD-based bandwidth part (BWP); SBFD cell information; measurement configuration information; coordination information.

3. The method of claim 2, wherein, The SBFD resource configuration information comprises at least one of: a period of SBFD resources; a subcarrier spacing associated with SBFD resources; a cell associated with SBFD resources; SBFD time domain resource location information; SBFD frequency domain resource location information; status information on whether to enable SBFD resources.

4. The method of claim 3, wherein, The SBFD time domain resource location information comprises at least one of: index information of an SBFD time slot; a number of consecutive SBFD time slots; a start position and / or an end position of the SBFD time slot; a start position offset and / or an end position offset of the SBFD time slot; a time slot type of the SBFD time slot; a link direction corresponding to a symbol in the SBFD time slot; index information of an SBFD symbol; a number of consecutive SBFD symbols; a start position and / or an end position of the SBFD symbol; a start position offset and / or an end position offset of the SBFD symbol; a symbol type of the SBFD symbol; a link direction corresponding to the SBFD symbol.

5. The method of claim 3, wherein, The SBFD frequency domain resource location information comprises at least one of: a subcarrier spacing; a number of physical resource blocks included in a sub-band; a bandwidth of a downlink sub-band, an uplink sub-band, or a guard sub-band; a start position in a frequency domain of a downlink sub-band, an uplink sub-band, or a guard sub-band; a start position offset in the frequency domain of a downlink sub-band, an uplink sub-band, or a guard sub-band; sub-band index information; sub-band type information; physical resource block index information; physical resource block type information.

6. The method of claim 2, wherein, The SBFD cell information comprises at least one of: indication information on whether a cell supports SBFD; a first field, wherein the first field is used to indicate the SBFD terminal to determine other cells capable of supporting SBFD within a current frequency for cell reselection in the case that the current cell is a forbidden cell corresponding to the SBFD terminal; indication information on whether a cell is forbidden by a cell corresponding to the SBFD terminal; cell information supporting SBFD provided by a cell not supporting SBFD.

7. The method of claim 2, wherein, The measurement configuration information comprises at least one of: measurement report configuration information; measurement object configuration information; measurement gap configuration information; a measurement quantity; a measurement quantity used for sorting measurement results; a trigger period of a measurement report; a trigger event of a measurement report; a reporting delay time limit of a measurement report; a threshold for triggering measurement; a duration for meeting a trigger condition; layer 3 filter parameters.

8. The method of claim 7, wherein, The measurement object configuration information comprises at least one of: synchronization signal block (SSB) resource configuration information; Index information of SSB resource configuration information; Channel state information reference signal, CSI-RS, resource configuration information; Index information of CSI-RS resource configuration information; Measurement purpose corresponding to measurement resource configuration information; SSB or CSI-RS to be measured; SSB measurement time configuration information; Reference signal transmitter cell information associated with measurement configuration; Reference signal receiver cell information associated with measurement configuration; Subcarrier spacing; Association information of CSI-RS measurement resource and SSB.

9. The method of claim 2, wherein, The method further comprises at least one of: sending a reference signal to the second node; receiving a measurement result based on the reference signal or a cross-link interference mitigation request from the second node.

10. The method of claim 9, further comprising: based on the cross-link interference mitigation request, sending the measurement configuration information to the first node.

11. The method of claim 2, wherein, The method further comprises at least one of: receiving a reference signal from the second node; based on the reference signal, sending a measurement result of the reference signal or a cross-link interference mitigation request to the second node.

12. The method of claim 9 or 11, wherein, The measurement result of the reference signal or the cross-link interference mitigation request comprises at least one of: beam information with the highest measurement result; coordination information; at least one of reference signal received power, RSRP, reference signal received quality, RSRQ, received signal strength indication, RSSI, channel quality indication, CQI, or signal to noise ratio, SINR, obtained by measurement; cell information causing cross-link interference; cell information suffering from cross-link interference; signal transmitter source cell associated with the reference signal; signal receiver target cell of the reference signal; beam information suffering from cross-link interference; type information of measurement result; resource location suffering from cross-link interference; at least one of uplink RSRP, RSRQ, RSSI, SINR, or CQI of the cell suffering from cross-link interference; beam information for receiving measurement signal; at least one of transmission RSRP, RSRQ, RSSI, CQI, or power determined based on measurement result; SSB information or CSI-RS information determined based on measurement result; measurement quantity for sorting measurement result; measurement type; measurement start time or measurement result obtaining time; invalid measurement result based on SSB information or CSI-RS information corresponding to the invalid measurement result; signal parameter threshold value triggering self-protection mechanism.

13. The method of claim 2, wherein, The coordination information comprises at least one of: coordination information of measurement configuration information; measurement configuration information and / or cell information causing configuration resource conflict; coordination information of measurement resource information; coordination information of beam information; coordination information of at least one of RSRP, RSRQ, RSSI, CQI, or power; coordination information of space division information.

14. The method of claim 1, wherein, The first node adopts central unit, CU, and distributed unit, DU, separation architecture; the CU is configured to transmit the cross-link interference management information to the DU.

15. The method of claim 1, wherein, The first node adopts CU and DU separation architecture; the DU is configured to transmit the cross-link interference management information to the CU.

16. The method of claim 1, wherein, The first node and the second node are both secondary nodes, and the receiving the cross-link interference management information from the second node comprises: Receiving the cross-link interference management information from the second node through the master node.

17. The method of claim 16, wherein, The number of the master nodes is multiple, and the cross-link interference management information comprises neighbor cell information, and the neighbor cell information is used to determine a transmission path of the cross-link interference management information between the nodes.

18. The method of claim 1, further comprising: sending configuration response information of the cross-link interference management to the second node; wherein the configuration response information is used to indicate that the cross-link interference management configuration is successful or failed; wherein in the case that the cross-link interference management configuration is failed, the configuration response information comprises at least one of: a reason of the configuration failure; measurement resource information available for the cross-link interference management configuration, or current measurement resource information is not available for the cross-link interference management; cell information in which a configuration resource conflict occurs.

19. A method of interference management, applied to a second node, wherein, The method comprises: sending cross-link interference management information to the first node, wherein the cross-link interference management information is used for mitigation management of the cross-link interference.

20. The method of claim 19, wherein, The cross-link interference management information comprises at least one of: sub-band full duplex (SBFD) resource configuration information; resource configuration information of SBFD-based random access; bandwidth part (BWP) configuration information based on SBFD; indication information of whether to enable SBFD-based random access; indication information of whether to enable SBFD-based bandwidth part (BWP); SBFD cell information; measurement configuration information; coordination information.

21. The method of claim 20, wherein, The SBFD resource configuration information comprises at least one of: a period of the SBFD resource; a subcarrier spacing associated with the SBFD resource; a cell associated with the SBFD resource; SBFD time domain resource location information; SBFD frequency domain resource location information; status information of whether to enable the SBFD resource.

22. The method of claim 20, wherein, The SBFD cell information comprises at least one of: indication information of whether the cell supports SBFD; a first field, wherein the first field is used to indicate that, in the case that the current cell is prohibited by an SBFD terminal, the SBFD terminal determines other cells capable of supporting SBFD within the current frequency to perform cell reselection; indication information of whether the cell is prohibited by the SBFD terminal; cell information of a cell supporting SBFD provided by a cell not supporting SBFD.

23. The method of claim 20, wherein, The measurement configuration information comprises at least one of: measurement report configuration information; measurement object configuration information; measurement gap configuration information; a measurement quantity; a measurement quantity used to sort measurement results; a trigger period of a measurement report; a trigger event of a measurement report; a reporting delay time limit of a measurement report; a threshold value triggering measurement; a duration satisfying a trigger condition; a layer 3 filter parameter.

24. The method of claim 19, further comprising: receiving a reference signal from the first node; sending, to the first node, a measurement result of the reference signal or a mitigation request of the cross-link interference according to the reference signal.

25. The method of claim 19, further comprising: sending a reference signal to the first node; receive a measurement result based on the reference signal or a request for mitigation of cross-link interference from the first node.

26. The method of claim 19, wherein, The first node adopts a central unit (CU) and distributed unit (DU) separation architecture; the DU is configured to transmit the cross-link interference management information to the CU.

27. The method of claim 19, further comprising: receiving configuration response information of cross-link interference management from the first node; wherein the configuration response information is used to indicate that the cross-link interference management configuration is successful or failed; wherein in the case of the cross-link interference management configuration failure, the configuration response information includes at least one of the following: a reason for the configuration failure; measurement resource information available for cross-link interference management configuration, or current measurement resource information is not available for cross-link interference management; cell information where configuration resource conflict occurs.

28. A communications device comprising: a memory and a processor; wherein the memory and the processor are coupled; the memory is configured to store instructions executable by the processor; the processor executes the instructions to perform the method according to any one of claims 1-27.

29. A computer readable storage medium, wherein, The computer readable storage medium has stored thereon computer instructions, which when executed on a processor, cause the processor to perform the method according to any one of claims 1-27.

30. A computer program product, wherein, The computer program product contains a computer program, which when executed on a computer, causes the computer to perform the method according to any one of claims 1-27.

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