Apparatus, method, and computer readable medium for communication

Abstract

Embodiments of the present disclosure relate to devices, methods, and computer readable media for cross-link interference (CLI) management. According to an embodiment of the present disclosure, a first terminal device receives a measurement configuration from a network device. The measurement configuration indicates a set of resources within a sub-band of an SBFD time unit, the SBFD time unit including sub-bands that do not overlap each other. The first terminal device measures an inter-subband CLI size associated with another subband of the SBFD time unit on the resource set. The other sub-band has a different link direction than the sub-band. And the first terminal equipment sends a measurement report including the CLI size to the network equipment. In this manner, the CLI impact may be managed.

Description

Technical Field

[0001] Embodiments of the present disclosure generally relate to the field of communications, and more particularly, to an apparatus, method, and computer-readable medium for cross-link interference management (CLIM). Background Art

[0002] With the development of communication technology, time units (e.g., symbols, time slots, frames, subframes, etc.) can be divided into multiple frequency sub-bands in the frequency domain. Multiple frequency sub-bands do not overlap with each other and can each be used for different link directions, such as uplink (UL) or downlink (DL). This time unit can also be called a sub-band non-overlapping full-duplex (SBFD) time unit. Furthermore, devices used for communication (e.g., network devices or terminal devices) can perform simultaneous transmission and reception of channels in different link directions on these time units to improve communication efficiency.

[0003] In addition, an SBFD time unit may not be aligned with another SBFD time unit, such as one SBFD time unit and another SBFD time unit configured for different network devices. In this case, the UL frequency subband of the SBFD time unit may partially overlap with the DL frequency subband of the other SBFD time unit. Consequently, the signals transmitted in the UL frequency subband and the overlapping DL frequency subband may interfere with each other. This may be referred to as intra-subband cross-link interference (CLI). In addition, signals transmitted on different frequency subbands (e.g., UL frequency subband and DL frequency subband) of the same divided SBFD time unit may also interfere with each other. This may also be referred to as inter-subband CLI. Summary of the Invention

[0004] In general, example embodiments of the present disclosure relate to devices, methods, and computer-readable media for cross-link interference (CLI) management.

[0005] In a first aspect, a first terminal device is provided. The first terminal device includes a transceiver and a processor communicatively coupled to the transceiver. The processor is configured to cause the first terminal device to receive a measurement configuration from a network device. The measurement configuration indicates a resource set within a subband of an SBFD time unit. The SBFD time unit includes non-overlapping subbands. The first terminal device is further configured to measure, on the resource set, a magnitude of inter-subband cross-link interference (CLI) associated with another subband of the SBFD time unit. The other subband has a different link direction than the subband. The first terminal device is further configured to send a measurement report including the CLI magnitude to the network device.

[0006] In a second aspect, a network device is provided. The network device includes a transceiver and a processor communicatively coupled to the transceiver. The processor is configured to cause the network device to send a measurement configuration to at least one of a first terminal device and a second terminal device. The measurement configuration indicates a set of resources within a subband of an SBFD time unit, where the SBFD time unit includes non-overlapping subbands. The network device is further configured to receive, from the first terminal device, a measurement report including an inter-subband CLI size in the subband.

[0007] In a third aspect, a second terminal device is provided. The second terminal device includes a transceiver and a processor communicatively coupled to the transceiver. The processor is configured to cause the second terminal device to receive a measurement configuration from a network device. The measurement configuration indicates a set of resources within a subband of an SBFD time unit, where the SBFD time unit includes non-overlapping subbands. The second terminal device is further configured to transmit an inter-subband CLI-RS to the first terminal device on another subband of the SBFD time unit. The other subband has a different link direction than the first subband.

[0008] In a fourth aspect, a first network device is provided. The first network device includes a transceiver and a processor communicatively coupled to the transceiver. The processor is configured to cause the first network device to obtain a measurement configuration indicating a resource set within a subband of an SBFD time unit. The SBFD includes non-overlapping subbands. The first network device is further configured to measure, on the resource set, an inter-subband CLI size associated with another subband of the SBFD time unit. The other subband has a different link direction than the first subband.

[0009] In a fifth aspect, a second network device is provided. The second network device includes a transceiver and a processor communicatively coupled to the transceiver. The processor is configured to cause the second network device to obtain a measurement configuration indicating a set of resources within a subband of an SBFD time unit. SBFD includes non-overlapping subbands. The second network device is further configured to transmit an inter-subband CLI-RS to the first network device on another subband of the SBFD time unit. The other subband has a different link direction than the first subband.

[0010] In a sixth aspect, a method implemented at a first terminal device is provided. In this method, the first terminal device receives a measurement configuration from a network device. The measurement configuration indicates a resource set within a subband of an SBFD time unit, where the SBFD time unit includes subbands that do not overlap with each other. The first terminal device measures, on the resource set, a magnitude of inter-subband cross-link interference (CLI) associated with another subband of the SBFD time unit. The other subband has a link direction different from that of the subband. The first terminal device sends a measurement report including the CLI magnitude to the network device.

[0011] In a seventh aspect, a method implemented at a network device is provided. In this method, the network device sends a measurement configuration to at least one of a first terminal device and a second terminal device. The measurement configuration indicates a resource set within a subband of an SBFD time unit, where the SBFD time unit includes non-overlapping subbands. The network device receives a measurement report from the first terminal device, the measurement report including an inter-subband CLI size within the subband. The CLI size is associated with another subband of the SBFD time unit. The other subband has a different link direction than the first subband.

[0012] In an eighth aspect, a method implemented at a second terminal device is provided. In this method, the second terminal device receives a measurement configuration from a network device, the measurement configuration indicating a resource set within a subband of an SBFD time unit. The SBFD time unit includes non-overlapping subbands. The second terminal device transmits an inter-subband cross-link interference reference signal (CLI-RS) to the first terminal device on another subband of the SBFD time unit. The other subband has a link direction different from that of the subband.

[0013] In a ninth aspect, a method implemented at a first network device is provided. In the method, the first network device obtains a measurement configuration indicating a resource set within a subband of an SBFD time unit. The SBFD time unit includes non-overlapping subbands. The first network device measures, on the resource set, a magnitude of cross-link interference (CLI) associated with another subband of the SBFD time unit. The other subband has a different link direction than the subband.

[0014] In a tenth aspect, a method implemented at a second network device is provided, wherein the second network device obtains a measurement configuration indicating a resource set within a subband of an SBFD time unit, wherein the SBFD time unit includes subbands that do not overlap with each other.

[0015] In an eleventh aspect, a computer-readable medium is provided having instructions stored thereon, which, when executed on at least one processor, cause the at least one processor to perform the method of any one of aspects six to ten.

[0016] It should be understood that the invention summary is not intended to identify the key or essential features of the exemplary embodiments of the present disclosure, nor is it intended to be used to limit the scope of the present disclosure. Other features of the present disclosure will become readily apparent through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Some example embodiments will now be described with reference to the accompanying drawings, in which:

[0018] FIG1A illustrates an example environment in which some embodiments of the present disclosure may be implemented;

[0019] FIG1B illustrates an example of inter-subband CLI caused by adjacent subbands;

[0020] Figure 2 illustrates a signaling process for managing inter-subband CLI between terminal devices in an SBFD time unit according to some embodiments of the present disclosure;

[0021] Figure 3a to Figure 3b illustrates an example of measurement resource configuration according to some embodiments of the present disclosure;

[0022] FIG4A illustrates an example of a channel state information-reference signal (CSI-RS) configuration for reducing the impact of inter-subband CLI according to some embodiments of the present disclosure;

[0023] FIG4B illustrates an example of a modulation and coding scheme (MCS) configuration for reducing the impact of inter-subband CLI according to some embodiments of the present disclosure;

[0024] FIG4C illustrates an example of a power configuration for reducing the impact of inter-subband CLI according to some embodiments of the present disclosure;

[0025] FIG4D illustrates an example of a demodulation reference signal (DMRS) configuration for reducing the impact of inter-subband CLI according to some embodiments of the present disclosure;

[0026] Figure 5 illustrates a signaling process for managing inter-subband CLI between network devices in SBFD time units according to some embodiments of the present disclosure;

[0027] Figure 6 A flowchart illustrating an example method implemented at a first terminal device according to some embodiments of the present disclosure is illustrated;

[0028] Figure 7 illustrates a flow chart of an example method implemented at a network device according to some embodiments of the present disclosure;

[0029] Figure 8 illustrates a flow chart of an example method implemented at a second terminal device according to some embodiments of the present disclosure;

[0030] Figure 9 illustrates a flow chart of an example method implemented at a first network device according to some embodiments of the present disclosure;

[0031] Figure 10 A flowchart illustrating an example method implemented at a second network device according to some embodiments of the present disclosure; and

[0032] Figure 11A simplified block diagram of a device suitable for implementing an example embodiment of the present disclosure is illustrated.

[0033] Throughout the drawings, the same or similar reference numerals denote the same or similar elements. DETAILED DESCRIPTION

[0034] The principle of the present disclosure will now be described with reference to some embodiments. It should be understood that these embodiments are described only for illustrative purposes and to help those skilled in the art understand and implement the present disclosure without implying any limitation on the scope of the disclosure. The disclosure described herein can be implemented in various ways different from the manner described below.

[0035] In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0036] As used herein, the term "terminal device" refers to any device with wireless or wired communication capabilities. Examples of terminal devices include, but are not limited to, user equipment (UE), personal computers, desktops, mobile phones, cellular phones, smartphones, personal digital assistants (PDAs), portable computers, tablets, wearable devices, Internet of Things (IoT) devices, Ultra-Reliable Low Latency Communication (URLLC) devices, Internet of Everything (IoE) devices, Machine Type Communication (MTC) devices, vehicle-mounted devices for V2X communication (where X means pedestrian, vehicle, or infrastructure / network), devices for Integrated Access and Backhaul (IAB), Small Data Transfer (SDT), mobility, multicast and broadcast services (MBS), positioning, dynamic / integrated data in commercial networks Flexible duplex, reduced-capacity (RedCap), space-based or aerial vehicles in non-terrestrial networks (NTNs) including satellites and high-altitude platforms (HAPs) including unmanned aerial systems (UASs), enhanced reality (XR) devices including different types of reality such as augmented reality (AR), mixed reality (MR), and virtual reality (VR), unmanned aerial vehicles (UAVs) commonly referred to as drones, devices on high-speed trains (HSTs), or image capture devices such as digital cameras, sensors, gaming devices, music storage and playback devices, or internet devices capable of wireless or wired internet access and browsing, etc. A "terminal device" may also have "multicast / broadcast" features to support public safety and mission-critical applications, V2X applications, transparent IPv4 / IPv6 multicast delivery, IPTV, smart TV, radio services, software delivery over the air, group communications, and IoT applications. It may also include one or more subscriber identity modules (SIMs), referred to as multi-SIMs. The term "terminal device" may be used interchangeably with UE, mobile station, subscriber station, mobile terminal, user terminal, wireless device, or reduced-capability terminal device.

[0037] As used herein, the term "network device" refers to a device that is capable of providing or hosting a cell or coverage area in which a terminal device can communicate. Examples of network devices include, but are not limited to, a Node B (Node B or NB), an evolved Node B (eNodeB or eNB), a next generation Node B (gNB), a transmission reception point (TRP), a remote radio unit (RRU), a radio head (RH), a remote radio head (RRH), an IAB node, a low power node such as a femto node, a pico node, a reconfigurable smart surface (RIS), a network controlled repeater, and the like.

[0038] The terminal device or network device may have artificial intelligence (AI) or machine learning capabilities. It usually includes a model that has been trained based on a large amount of collected data for a specific function and can be used to predict some information. The terminal or network device can operate on several frequency ranges, such as FR1 (410MHz-7125MHz), FR2 (24.25GHz to 71GHz), 71GHz to 114GHz, and frequency bands greater than 100GHz and terahertz (THz). It can also operate on licensed / unlicensed / shared spectrum. In the multi-radio dual connectivity (MR-DC) application scenario, the terminal device can have more than one connection with the network device. The terminal device or network device can operate in full-duplex, flexible duplex and cross-split duplex modes.

[0039] The network equipment may have network energy saving, self-organizing network (SON) / minimized drive test (MDT) functions. The terminal may have a power saving function.

[0040] The embodiments of the present disclosure may be implemented in a test device, such as a signal generator, a signal analyzer, a spectrum analyzer, a network analyzer, a test terminal device, a test network device, or a channel emulator.

[0041] Embodiments of the present disclosure may be implemented in accordance with any generation of communication protocols currently known or developed in the future. Examples of communication protocols include, but are not limited to, first generation (1G), second generation (2G), 2.5G, 2.75G, third generation (3G), fourth generation (4G), 4.5G, fifth generation (5G) communication protocols, 5.5G, 5G advanced networks, or sixth generation (6G) networks.

[0042] In one embodiment, a terminal device may be connected to a first network device and a second network device. One of the first network device and the second network device may be a primary node, and the other may be a secondary node. The first network device and the second network device may use different radio access technologies (RATs). In one embodiment, the first network device may be a first RAT device, and the second network device may be a second RAT device. In one embodiment, the first RAT device is an eNB and the second RAT device is a gNB. Information related to different RATs may be sent from at least one of the first network device and the second network device to the terminal device. In one embodiment, first information may be sent from the first network device to the terminal device, and second information may be sent from the second network device to the terminal device directly or via the first network device. In one embodiment, information related to configuration of the terminal device configured by the second network device may be sent from the second network device via the first network device. Information related to reconfiguration of the terminal device configured by the second network device may be sent from the second network device to the terminal device directly or via the first network device.

[0043] As used herein, unless the context clearly indicates otherwise, the singular forms "a," "an," and "the" are intended to include the plural forms as well. The term "including" and its variations are to be interpreted as open-ended terms meaning "including but not limited to." The term "based on" is to be interpreted as "based at least in part on." The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment." The term "another embodiment" is to be interpreted as "at least one other embodiment." The terms "first," "second," etc. may refer to different or identical objects. Other explicit and implicit definitions may be included below.

[0044] In some examples, values, processes, or devices are referred to as "best," "lowest," "highest," "minimum," "maximum," etc. It should be understood that such descriptions are intended to indicate that a selection may be made among a number of functional alternatives employed, and that such selection is not necessarily better, lesser, higher, or more preferred than other options.

[0045] As used herein, the term "circuitry" may refer to hardware circuitry and / or a combination of hardware circuitry and software. For example, a circuitry may be a combination of analog and / or digital hardware circuitry and software / firmware. As another example, a circuitry may be any portion of a hardware processor with software, including a digital signal processor, software, and memory that work together to enable a device, such as a terminal device or network device, to perform various functions. In yet another example, a circuitry may be a hardware circuitry and / or processor, such as a microprocessor or portion of a microprocessor, that requires software / firmware for operation, but may not have the software present when not required for operation. As used herein, the term circuitry also encompasses implementations consisting solely of a hardware circuitry or processor, or a portion of a hardware circuitry or processor, and its accompanying software and / or firmware. In this disclosure, subband and frequency subband may be used interchangeably without limitation. The RBG group size may also be referred to as the RBG size without limitation. A time unit configured for SBFD communication may also be referred to as an SBFD time unit, and a time unit not configured for SBFD communication may also be referred to as a non-SBFD time unit. In the present disclosure, control channel may be used interchangeably with physical downlink control channel (PDCCH) without any limitation.In the present disclosure, time unit may be any duration, such as symbol, slot, frame, etc.

[0046] As described above, due to misalignment between different SBFD time units or interference between subbands configured for different link directions, CLI (e.g., intra-subband CLI or inter-subband CLI) may appear in the frequency subband of a certain SBFD time unit. In this case, a measurement of the CLI magnitude in that frequency subband should be obtained; for example, to evaluate communication performance or to mitigate interference by scheduling communication resources. That is, for SBFD operation, a method for measuring CLI (e.g., inter-subband CLI) and reporting the measurement results should be specified.

[0047] At least to solve the above-mentioned technical problems, an example embodiment of the present disclosure proposes a mechanism for CLI management. In this mechanism, a first terminal device receives a configuration from a network device. The configuration indicates a set of resources within a first frequency sub-band of an SBFD time unit, and the SBFD time unit includes frequency sub-bands that do not overlap with each other. The first terminal device measures the inter-sub-band CLI size in the first frequency sub-band. The CLI size is associated with another second frequency sub-band (for example, an adjacent frequency sub-band), and the other second frequency sub-band has a different link direction from the first frequency sub-band. In one example, the CLI is caused by a signal sent in the other second frequency sub-band. The terminal device then sends a measurement report including the CLI size to the network device.

[0048] In this way, through this configuration, a terminal device can determine the CLI level in the SBFD subband and report the CLI level back to the network device via a measurement report. The network device can then manage the CLI by scheduling the terminal device or an "aggressor" terminal device. For simplicity of discussion and without limitation, the SBFD frequency subband may also be referred to as a subband.

[0049] For the purpose of illustration, reference will be made to FIG. Figure 5 However, it should be noted that these embodiments are given to enable those skilled in the art to understand the inventive concepts of the present disclosure and implement the solutions proposed herein, and are not intended to limit the scope of the present application in any way.

[0050] FIG. 1A illustrates an example environment 100 in which example embodiments of the present disclosure may be implemented.

[0051] Environment 100 may be part of a communications network and include a first terminal device 110, a second terminal device 120, a network device 130, a second network device 140, and a third terminal device 150. In the present disclosure, network device 140 may also be referred to as first network device 130. In some embodiments, the communications network may include NTN, NB-IoT, and / or eMTC. In other embodiments, the communications network may include any other possible communications network. It should be understood that the number of network devices and terminal devices is provided for illustrative purposes only and does not imply any limitation. The communications network may include any suitable number of network devices and / or terminal devices suitable for implementing embodiments of the present disclosure. Although not shown, it should be understood that one or more terminal devices may be located in environment 100.

[0052] Without any limitation, network device 130 and second network device 140 support SBFD communication. For example, network device 120 and second network device 140 can simultaneously transmit a downlink (DL) channel to terminal device 110 and receive an uplink (UL) channel from another terminal device (e.g., third terminal device 150) in an SBFD time unit. In the present disclosure, a non-SBFD time unit can be a UL-only time unit or a DL-only time unit. As shown in FIG. 1A , network device 130 can simultaneously transmit a DL channel to terminal device 110 and receive a UL channel from terminal device 120 in an SBFD time unit. At the same time, even if the SBFD time unit is divided into subbands in the same manner, the DL channel received by first terminal device 110 may be interfered with by the UL channel transmitted from second terminal device 120, for example, due to energy leakage. In one example, the attacker terminal device (the second terminal device 120) transmits an UL signal / channel, such as an SRS, on an UL subband, and the victim terminal device (the first terminal device 110) measures the CLI-RSSI on the configured cross-link interference management (CLIM) resources in the DL subband. In the present disclosure, the above situation may also be referred to as "inter-subband UE-UE CLI." That is, for SBFD operation, UL / DL transmission in an UL / DL subband of one cell may interfere with DL / UL reception in another adjacent subband of the same or another cell.

[0053] In addition, at the first network device 130, the UL channel received from the second terminal device 120 may also be interfered with by the DL channel sent from the second network device 140. In the present disclosure, this situation may also be referred to as "inter-subband gNB-gNBCLI".

[0054] FIG. 1B illustrates an example of inter-subband CLI caused by adjacent subbands.

[0055] As shown in Figure 1B, the SBFD time unit is divided into UL subband (U) and DL subband (D). In this example, regarding the characteristics of CLI, inter-subband CLI may be non-uniform in the interfered subband. In some embodiments, as shown by the CLI sizes at frequencies f3, f4, and f5 in Figure 1B, the CLI size is larger around the boundary (f2) between subbands with different link directions, and smaller at locations far from the boundary. In this case, different strategies should be adopted for measuring, mitigating, or suppressing CLI for different frequency intervals in the DL subband. In addition, potential enhancements to UE-to-UE CLI measurement / reporting that take into account non-uniform CLI in the DL subband should be considered.

[0056] Figure 2

[0026] Illustrated is a signaling process 200 for managing inter-subband CLI between terminal devices in SBFD time units according to some embodiments of the present disclosure.For illustrative purposes, the process 200 will be described with reference to FIG1.

[0057] In the signaling process 200, the network device 130 sends (201) a configuration to the first terminal device 110. The configuration indicates a resource set within an SBFD time unit. The SBFD time unit is divided into multiple subbands that do not overlap with each other. Multiple subbands can be used for channel transmission with different link directions. In some embodiments, the resource set can be applied to more than one subband. Alternatively, the configuration can indicate more than one resource set in more than one subband.

[0058] In some embodiments, the configuration is a common measurement configuration for measuring the inter-subband CLI size and intra-subband CLI size in a subband. In this case, the measurement configuration may include a measurement type indication for CLI. In one example, the CLI measurement type is included in a configuration or a configured element (IE) (which may also be referred to as a measurement resource configuration). For example, the parameter CLI-MeasTypeConfig may be included in the IE measobjectcli or RSSI-ResourceConfigCLI. Candidate configuration values ​​include UE-to-UE intra-cell inter-subband CLI measurement, UE-to-UE inter-cell inter-subband CLI measurement, or UE-to-UE inter-cell intra-subband CLI measurement. This may also be expressed as follows:

[0059]

[0060] For clarity of discussion only and without limitation, the subband including the indicated resource set may also be referred to as the first subband. Furthermore, after receiving (203) the configuration, the first terminal device 110 may know the resource location for measuring the inter-subband CLI in the first subband.

[0061] In some embodiments, the resource set indicated by the configuration may include a CLI measurement resource or a CLI measurement resource list for inter-subband / intra-subband CLI measurement. Additionally, the configured CLI measurement resources for UE-to-UE inter-subband / intra-subband CLI may include some consecutive resource blocks (RBs) corresponding to one or more subbands including the first subband. The one or more subbands have the same link direction, such as UL. If one or more subbands have the same frequency bandwidth, the resource set can be applied to each subband in the one or more subbands. That is, the terminal device 110 can determine the corresponding resource set in each subband in the one or more subbands based on the resource set. For example, the resource set is configured at the same position of each subband in the multiple subbands. Otherwise, if one or more subbands do not have the same frequency bandwidth, the resources for each measurement are configured separately by indicating the number of starting PRBs and ending PRBs / PRBs for each subband in the one or more subbands.

[0062] In one example, if the frequency structure of the SBFD time unit is [D, U] or [U, D]. That is, there is only one DL and one UL subband in the SBFD time unit, then the CLI measurement resource can be indicated by the starting physical resource block (PRB) and the ending PRB or the number of PRBs in the DL / UL subband. In addition, the number of time units to be measured is the same as the number of SBFD time units. Alternatively, if the frequency structure of the SBFD time unit is [D, U, D], and if the two DL subbands are symmetrical and the bandwidth is the same, then the measurement resource set (or measurement report as discussed below) can be applied to one or both DL subbands. For example, a subband index (serving as a subband CLI measurement subband enable field) can be included in the configuration to indicate the subband to which the resource set is applied. In this case, the terminal device 110 can determine the resource set in the subband indicated by the corresponding subband index. Otherwise, separate resource sets can be configured separately in different DL subbands. That is, the starting PRB index and the ending PRB index or the number of PRBs are indicated in each DL subband indication.

[0063] Alternatively, in some embodiments, the configuration sent in step 201 is dedicated to measuring inter-subband CLI. In some embodiments, the configuration indicates at least one inter-subband CLI resource, and the at least one inter-subband CLI resource is indicated by at least one of the following: a transmission configuration indication (TCI) state identifier (ID), a starting physical resource block (PRB) index, an ending PRB index, the number of PRBs, a subcarrier spacing (SCS), or a measurement periodicity and offset.

[0064] In one example, when the network device 130 configures a resource set, the first terminal device 110 will be able to perform inter-subband CLI received signal strength indicator (RSSI) measurements of the configured rssi-Resource-Inter-subband-CLIConfig. The above configuration (which may also be referred to as an inter-subband CLI measurement configuration) may indicate a list of inter-subband RSSI-CLIM resources in one or two subbands, and each resource set (which may also be referred to as an inter-subband RSSI-CLI measurement resource) may have an ID and include the following parameters, such as SCS, starting PRB, ending PRB, number of PRBs, periodicity and offset of measurement, TCI-StateId, cell index, and may also include the starting symbol position and number of symbols (if these two parameters are not included, the default measurement symbol is equal to the SBFD symbol). This may also be expressed as follows:

[0065]

[0066] Additionally, the structure of resource collections can be configured in different ways; these will refer to Figure 3a and Figure 3b Further discussion.

[0067] The network device 130 may then further send (205) the configuration to the second terminal device 120. The second terminal device 120 includes any electronic device that can cause intra-subband or inter-subband CLI at the first terminal device 110. After receiving the configuration, the second terminal device 120 also knows the resource location for measuring inter-subband CLI in the subband. Furthermore, the second terminal device 120 may send a signal for CLI measurement on another subband in the SBFD. The other subband has a different link direction. For example, the first subband is a UL or DL ​​subband, and the other subband is an adjacent DL or UL subband. For clarity of discussion only and without any limitation, the other subband may also be referred to as a second subband. In some embodiments, the second terminal device 120 is served by the second network device 140. In this case, the network device 130 and the second network device 140 may exchange SBFD assistance information with each other via the Xn and F1 interfaces. In some embodiments, the SBFD assistance information may include the configuration as discussed above. The second network device 140 may then send the configuration to the second terminal device 120 accordingly.

[0068] In some embodiments, the SBFD assistance information may further include elements as shown in Table 1 below.

[0069] Table 1

[0070]

[0071] At the second terminal device 120, as discussed above, the second terminal device transmits (209) at least one CLI-RS to the first terminal device 110 on the second subband. In some embodiments, the CLI-RS may be a sounding reference signal (SRS). In turn, the first terminal device 110 may perform (211) channel reception on the first subband of the SBFD time unit. The first terminal device 110 measures (213) the inter-subband CLI size caused by the CLI RS transmitted in the second subband on the resource set indicated by the configuration. In some embodiments, the resource set indicated by the configuration may include multiple resource subsets. In order to clearly discuss the CLI measurement, a resource set including multiple resource subsets is first discussed with reference to Figures 3A and 3B.

[0072] FIG3A illustrates a structural example of a measurement resource configuration according to some embodiments of the present disclosure.

[0073] As shown in Figure 3A, in some embodiments, a resource set may include multiple uniform resource subsets. For example, each of the multiple uniform resource subsets has the same frequency bandwidth. In this case, the configuration may indicate the number of resource blocks (K) shared between the multiple uniform resource subsets. The first terminal device 110 may then know the number of physical resource blocks in each of the multiple uniform resource subsets. Alternatively, the configuration may also indicate the resource block (RB) size for each of the multiple uniform resource subsets. In some embodiments, the multiple uniform resource subsets are contiguous, and the resource subset furthest from the boundary may have a different number of resource blocks. As shown in Figure 3A, resource subsets 310, 320, and 330 may have the same number of RBs as discussed above; that is, these subsets have the same bandwidth 340. For the furthest resource subset, the number of remaining RBs in the first subband is less than K. The number of remaining RBs in the subband may then form the final resource subset. In some embodiments, the shared RB set size, or K, for the resource subsets may be configured based on the first subband size. For example, the shared RB set size k for the first subband may be as shown in the following table.

[0074] Table 2

[0075] DL subband (number of PRBs) Resource subset size 24–72 2,4 73–144 4,8 145–275 8,16

[0076] In this case, when the first terminal device 110 measures the CLI size, the terminal device 110 can determine the corresponding CLI levels on different parts of the first subband. The measurement report including these corresponding CLI levels (which will be discussed below) can help the network device 130 schedule appropriate bandwidth for the physical downlink shared channel (PDSCH).

[0077] FIG3B illustrates a structural example of a measurement resource configuration according to some embodiments of the present disclosure.

[0078] Alternatively, in some embodiments, the configuration may individually indicate each of the multiple resource subsets. In this case, each of the multiple resource subsets may have a separate number of RBs or a separate frequency bandwidth. In this case, the configuration will provide the RB set index for the resource subset and the RBs in each measured RB set, for example, including the starting PRB index and the number of PRBs / end PRB index. In some embodiments, the bandwidth of the resource subset closer to the boundary between the first subband and the second subband may have a smaller bandwidth for finer CLI measurement. In this way, the CLI size around the boundary can be measured more accurately.

[0079] 3B , resource subsets 370 , 380 , and 390 may have different numbers of RBs or different RB set sizes. For example, the number of RBs (or bandwidth 391 ) of resource subset 391 is smaller than the number of RBs (or bandwidth 393 ) of resource subset 390 .

[0080] Return to see Figure 2 After measuring the inter-subband CLI size, the first terminal device 110 sends (215) a measurement report (which may also be referred to as an inter-subband CLI measurement report) to the network device 130. The measurement report includes the measured CLI size. In some embodiments, the CLI size is a received signal strength indicator (RSSI) measured in the first subband. In one example, the measurement quantity for the UE / gNB to perform inter-subband CLI measurement on the SBFD symbols may be RSSI. The victim UE / gNB may then perform inter-subband CLI-RSSI measurement on the configured CLI resources. The RSSI may be modified based on the CLI-RSSI definition in TS 38.215 as follows.

[0081]

[0082] The above embodiment can also be expressed as follows

[0083]

[0084] Alternatively, the CLI size is a CLI level determined based on a measured RSSI value, for example, a quantized value determined from RSSI.

[0085] In some embodiments, measurement reports are sent based on a report type (reportType). The report type can be periodic or event-triggered. For example, measurement reports can be sent periodically. For periodic reporting, the configured parameters include:

[0086]

[0087] Additionally or alternatively, a measurement report may be sent in response to an event, for example, if the CLI size is above a CLI threshold (which may also be referred to as a second CLI threshold). Specific events for triggering inter-subband CLI reporting may be defined and based on CLI measurement results, such as a measured inter-subband CLI-RSSI value exceeding a configured threshold.

[0088] The following parameters are included for event-triggered reports.

[0089]

[0090]

[0091] In addition, the measurement report may also include the following CLI measurement information, such as:

[0092]

[0093] Furthermore, as mentioned above, a resource set may include multiple resource subsets, which may be uniform or non-uniform (e.g. Figure 3a and Figure 3b For uniform resource subsets, a finer granularity smaller than the DL subband size, such as RB set-based CLI-CSI reporting, can be considered. The DL subband can be divided into multiple smaller RB sets, each of which includes K consecutive PRBs, and the number of PRBs in the last RB set in the DL subband can be less than K. A CLIM reporting matrix can be introduced. The CLIM reporting matrix includes inter-subband CLI for different RB sets in the DL subband, and these reports can help the gNB schedule appropriate bandwidth for the PDSCH. As an example only, the CLIM reporting matrix can be shown in Table 3 below.

[0094] Table 3

[0095]

[0096] In this matrix, each element is associated with a corresponding resource subset from a plurality of resource subsets and an SBFD time unit. That is, a measurement report may include the CLI size in a subband of one or more SBFD time units, as shown in time units 0 to 6. RB sets 0 to 3 are the plurality of resource subsets discussed above.

[0097] Additionally, although the elements in Table 3 are shown as CLI levels, the elements of the matrix may also be measured RSSIs. Table 4 below shows an example relationship between RSSI and CLI levels.

[0098] Table 4

[0099] Inter-subband CLI level Measured RSSI value range (dBm) CLI Level 0 <-100 CLI Level 1 {-100,-80} CLI Level 2 {-80,-60} CLI Level 3 {-60,-40} CLI Level 4 >-40

[0100] For non-uniform resource subsets, the first terminal device 110 can send measurements in the same way. For example, the first terminal device 110 can report the inter-subband UE-to-UE CLI to the UE per subband or RB set (e.g., resource subset). In this case, the measurement resource configuration will give the RB set index and the RBs in each measured RB set, including the starting PRB index and the number of PRBs / end PRB index. In this way, the first terminal device 110 will report the measurement results (CLI-RSSI value or level) per RB set.

[0101] Additionally or alternatively, the first terminal device 110 may use an RB set differential CLI-CSI method to report inter-subband CLI for different RB sets. In some embodiments, the measurement report includes a CLI size for a first resource subset among the multiple resource subsets and at least one CLI offset value for at least one other resource subset among the multiple resource subsets. The first resource subset may be a resource subset with the lowest CLI size or any other resource set (e.g., the first of the multiple resource subsets). Relative offset values ​​are then reported for the remaining resource subsets in the first subband.

[0102] Additionally, the measurement report may include only a portion of the CLI measurement result. For example, the CLI size in the measurement report includes a CLI size that is higher than another CLI threshold (which may also be referred to as a first CLI threshold). If the measured CLI does not exceed the threshold, then there is no need to report the RB set index (and the corresponding CLI size). Alternatively, the first terminal device 110 reports the inter-subband CLI level based on the measured RSSI range for each level in each RB set reported according to the configuration.

[0103] Additionally, the measurement report may be identified by a report identification (ID).The report ID may be associated with at least one of a configured ID or another ID for each of the plurality of resource subsets.

[0104] In one example, the ID of the resource set indicated by the configuration (eg, one CLI-RSSI measurement resource ID) is associated with one reporting ID. As mentioned above, the resource set may span two subbands (eg, two DL subbands).

[0105] Alternatively: two or more resource sets (e.g., indicated by two or more of the above configurations) may be configured to be associated with the same reporting ID. This may also be referred to as follows:

[0106]

[0107] Alternatively, one measurement report may include all CLI measurement sizes corresponding to each resource subset on both DL subbands.

[0108] Return to see Figure 2 , after receiving (217) the measurement report, the network device 130 may perform CLI management to reduce the CLI size in the first sub-band.

[0109] In some embodiments, different frequency densities may be configured for measurement reference signals in different frequency intervals to ensure inter-subband CLI measurement accuracy or intra-frequency CSI-RS measurement accuracy. For clarity of discussion, the above embodiment is further discussed with reference to FIG4A.

[0110] 4A illustrates an example of a channel state information-reference signal (CSI-RS) configuration for reducing inter-subband CLI effects according to some embodiments of the present disclosure.

[0111] In one example, the network device 130 sends (219) a first density indication of a channel state information reference signal (CSI-RS) to the first terminal device 110. The first density indication indicates a first density and a second density, and the first density is higher than the second density. In addition, the first density is associated with a first portion of the first subband, and the second density is associated with a second portion of the first subband. The first portion (410) is closer to a boundary between the first subband and the second subband than the second portion (420). After receiving (221) the first density indication, the first terminal device 110 can receive or measure the CSI-RS accordingly.

[0112] As shown in Figure 4A, for regions closest to the DL and UL subband boundaries, a higher CSI-RS density, such as 3 REs per PRB, is applied or configured, taking into account the maximum inter-subband CLI for that region. For regions with farther frequency locations, a lower CSI-RS density, such as one RE per two PRBs, can be used for that region. Furthermore, mid-frequency regions can use a CSI-RS density of 1; that is, one RE per PRB. This density information can be exchanged with other neighboring gNBs via the Xn and F1 interfaces. To ensure CSI-RS measurement accuracy within the DL subband, these different configurations can mitigate the impact of inter-subband CLI on DL measurements. While the first density indication discussed above is with reference to inter-subband UE-to-UE CLI, it can also be applied to inter-subband gNB-to-gNB CLI without limitation.

[0113] Return to see Figure 2A, Additionally or alternatively, a modulation and coding scheme (MCS) may also be adjusted to reduce the CLI effect. In some embodiments, network device 110 may send (225) an order indication of the MCS. The order indication specifies a first order and a second order, and the first order is lower than the second order. Similarly, the first order is associated with a first portion of the subband, and the second order is associated with a second portion of the subband.

[0114] 4B illustrates an example of a modulation and coding scheme (MCS) configuration for reducing inter-subband CLI effects according to some embodiments of the present disclosure.

[0115] In one example, the second-order indication can also be embodied as a frequency factor or frequency offset factor relative to the first MCS order. In this case, the frequency factor or frequency offset factor can be added to the MCS applied for PDSCH / PUSCH transmitted in different frequency intervals, with the offset relative to the boundary of the DL / UL subband, that is, a non-uniform MCS can be used for PDSCH / PUSCH to compete for non-uniform inter-subband CLI for different PRBs. As shown in Figure 4B, factors 427, 429, and 431 represent frequency factors or frequency offsets.

[0116] In this way, different MCSs (e.g., different MCS steps) are applied to different frequency locations (423 and 425), and for the interval closest to the DL and UL subband boundaries, the smallest MCS is applied considering the maximum inter-subband CLI for that interval, and for intervals farther away from the frequency location, a larger MCS can be used for that interval. Alternatively, different factors for the MCS can be applied to different frequency locations. In this case, only one MCS is configured or indicated.

[0117] Return to see Figure 2 , after receiving (225) the order indication, the first terminal device 110 may adjust the MCS accordingly.

[0118] Additionally or alternatively, the network device 130 may instruct (219) the attacker terminal device (e.g., the second terminal device 120) to adjust the transmit power to reduce the CLI effect. In some embodiments, the network device 130 may send a power indication. The power indication indicates a first power and a second power, and the first power is lower than the second power. Similarly, the first power is associated with a first portion of the subband, and the second power is associated with a second portion of the subband. After receiving (221) the power indication, the attacker terminal device may adjust the transmit power accordingly. For clarity of discussion, the above embodiment is further discussed with reference to FIG. 4C.

[0119] FIG4C illustrates an example of a power configuration for reducing inter-subband CLI effects according to some embodiments of the present disclosure.

[0120] As shown in FIG4C , the second power is indicated based on the first power and a frequency offset factor or a frequency factor (as shown in reference numerals 437, 439, and 441). In this way, the frequency factor can be added to the power applied to UL / DL transmission in different frequency intervals, and non-uniform power for different frequency intervals can be used for UL / DL transmission to mitigate inter-subband CLI. In this way, when transmitting the UL subband as shown in FIG4C , the second terminal device 120 can use different transmit powers to transmit the first part 433 and the second part 435.

[0121] For example, if the aggressor terminal device is scheduled / configured with a PUSCH / Physical Uplink Control Channel (PUCCH) on an RB that is closer to an adjacent DL subband, a smaller power parameter may be applied. For example, a factor of 1 = 0.2 may be configured or indicated compared to a scheduled PUSCH / PUCCH allocated with an RB that is further away from an adjacent subband. If the aggressor terminal device is scheduled / configured with a PUSCH / PUCCH on an RB that is far away from an adjacent DL subband, a larger power parameter (factor) may be configured. Alternatively, if the scheduled / configured PUSCH / PUCCH spans two or more different CLI level frequency intervals, the minimum power may be used. In the present disclosure, the adjacent channel leakage power ratio (ACLR) for inter-subband CLI is the ratio of the filtered average power centered on the assigned channel frequency to the filtered average power centered on the adjacent subband in the interval closest to the DL / UL subband edge.

[0122] Return to see Figure 2 Additionally or alternatively, in some embodiments, the network device 130 may further adjust the density or DMRS type of a demodulation reference signal (DMRS) for the first terminal device 110. For example, the network device 130 may send (227) a second density indication of the DMRS. The second density indication indicates a first density type and a second density type, and the first density type is higher than the second density type. Similarly, the first type is associated with a first portion of the subband, and the second type is associated with a second portion of the subband. Upon receiving (229) the second density indication, the first terminal device 110 may adjust the DMRS reception accordingly. For clarity of discussion, the above embodiment is further discussed with reference to FIG. 4D .

[0123] 4D illustrates an example of a demodulation reference signal (DMRS) configuration for reducing inter-subband CLI effects according to some embodiments of the present disclosure.

[0124] As shown in FIG. 4D , different frequency densities (as shown in 443 and 445 ) may be configured for DMRS in different frequency intervals to ensure channel estimation accuracy and suppress inter-subband CLI caused by UL transmission of the second terminal device 120 in adjacent UL subbands.

[0125] In one example, for a scheduled PDSCH on an RB closer to an adjacent DL subband, a dense type 1 DMRS (443) may be configured. For a scheduled PDSCH on an RB farther from an adjacent DL subband, a sparse type 2 DMRS (445) may be configured in that frequency interval. By configuring different DMRSs, inter-subband CLI for UL subband-to-PDSCH reception may be suppressed.

[0126] In this way, the victim terminal device can measure and report the inter-subband UE-to-UE CLI. Using the measurement reports, the network device can manage the CLI effect by scheduling the victim terminal device and the aggressor device. In this way, the CLI effect can be handled.

[0127] Furthermore, inter-subband gNB-to-gNB CLI can be managed in a similar manner, except for some differences associated with network equipment characteristics.

[0128] Figure 5 Illustrated is a signaling process 500 for managing inter-subband CLI between network devices in SBFD time units according to some embodiments of the present disclosure.For illustrative purposes, process 200 will be described with reference to FIG.

[0129] In the signaling process 500, the network device 130 (hereinafter referred to as the first network device 130) obtains (510) a configuration indicating a set of resources within a subband of a SBFD time unit. Figure 2 The same structure as discussed above. Second network device 140 also obtains (520) a configuration for CLI management. In some embodiments, first network device 110 can directly determine the configuration and notify (503) the second network device 140 of the configuration, or vice versa (501). In some embodiments, first network device 130 and second network device 140 can also receive the configuration from an authentication management function (AMF).

[0130] Second network device 140 then transmits (530) an inter-subband CLI-RS on another subband of the SBFD time unit to first network device 130. The other subband has a different link direction than the aforementioned subband. Furthermore, upon receiving (540) the CLI-RS, first network device 110 measures (550) at least one inter-subband CLI magnitude associated with the other subband of the SBFD time unit on the resource set indicated by the configuration.

[0131] Then, the first network device 130 may instruct the second network device 140 to adjust the transmit power to reduce the CLI. For example, the first network device 130 sends a power indication to the second network device 140. The power indication may be the same as the reference power. Figure 2 Additionally or alternatively, the first network device 130 may also schedule which UL transmissions of the terminal device are affected by the CLI. For example, the first network device 130 may send a first density indication of a sounding reference signal (SRS). The first density indication may be the same as Figure 2 Additionally or alternatively, the first network device 130 may also send a second density indication of the DMRS and / or an order indication of the MCS to the terminal device. These indications may be similar to the first density indication of the CSI-RS in FIG. Figure 2 The corresponding instructions in are the same.

[0132] Additionally or alternatively, the first network device 130 may also send a measurement report to the second network device 140, and the second network device 140 may adjust the DL transmission accordingly based on the measurement report. Figure 2 The measurement reports discussed are the same. In addition, the information exchanged between network devices in the signaling process 200 can also be included in the signaling process 500 without any limitation.

[0133] In this way, inter-subband gNB-to-gNB CLI may also be measured, reported, and / or processed at the network equipment.

[0134] Figure 6 A flow chart illustrating a communication method 600 implemented at a terminal device according to some embodiments of the present disclosure is shown. Method 600 may be implemented at terminal device 110 shown in FIG1 . For discussion purposes, method 600 will be described with reference to FIG1 . It should be understood that method 600 may include additional actions not shown and / or may omit some of the illustrated actions, and the scope of the present disclosure is not limited in this respect.

[0135] At 610, terminal device 110 receives a configuration from network device 130 indicating a resource set within a subband of an SBFD time unit. The SBFD time unit includes non-overlapping subbands. At 620, terminal device 110 measures, on the resource set, an inter-subband CLI size associated with another subband of the SBFD time unit. The other subband has a different link direction than the first subband. At 630, terminal device 110 sends a measurement report including the CLI size to network device 130.

[0136] In some embodiments, the other subband is a neighboring subband of the subband, and wherein the CLI size comprises at least one of: a received signal strength indicator (RSSI); or a CLI level determined based on the RSSI.

[0137] In some embodiments, the configuration is a common measurement configuration for measuring inter-subband CLI size and intra-subband CLI size in a subband, the inter-subband CLI in the subband being caused by a signal transmitted on another subband, and the intra-subband CLI in the subband being caused by another signal transmitted on a frequency band that at least partially overlaps with the first subband. In some embodiments, the configuration includes a measurement type indication for the CLI.

[0138] In some embodiments, the first subband is one of a plurality of subbands in an SBFD time unit. The plurality of subbands have the same frequency bandwidth and the same link direction, and the terminal device further determines, based on the resource set, a corresponding resource set in each of the plurality of subbands; measures a corresponding CLI size on the corresponding resource set; and transmits a measurement report including the corresponding CLI size.

[0139] In some embodiments, the configuration includes a CLI measurement subband enable field, which indicates at least one subband among multiple subbands, and wherein the terminal device is enabled to determine the corresponding resource set by the following steps: determining the corresponding resource set in at least one subband.

[0140] In some embodiments, the configuration is dedicated to measuring inter-subband CLI, and wherein the configuration indicates at least one inter-subband CLI resource, and the at least one inter-subband CLI resource is indicated by at least one of: a transmission configuration indication (TCI) state identifier (ID); a starting physical resource block PRB index; an ending PRB index; the number of PRBs; a subcarrier spacing (SCS); or a measurement periodicity and offset.

[0141] In some embodiments, the configuration indicates a set of resources comprising a plurality of subsets of resources.

[0142] In some embodiments, the configuration further indicates a number of resource blocks shared between the plurality of resource subsets, and wherein the CLI measurement report includes a CLI size measured in a resource subset of the plurality of resource subsets.

[0143] In some embodiments, the configuration individually indicates each of the plurality of resource subsets, and wherein the CLI measurement report includes a CLI size measured in a resource subset of the plurality of resource subsets.

[0144] In some embodiments, the measurement report includes a CLI size for one of the plurality of resource subsets and at least one CLI offset value for at least one other of the plurality of resource subsets.

[0145] In some embodiments, a CLI size measured in the resource subset is above a first CLI threshold.In some embodiments, a reporting identification (ID) of the measurement report is associated with at least one of a configured ID or another ID for each of the plurality of resource subsets.

[0146] In some embodiments, the measurement report includes a CLI level matrix. An element in the CLI level matrix is ​​associated with a corresponding resource subset in the plurality of resource subsets and an SBFD time unit. The element is determined based on the RSSI.

[0147] In some embodiments, the measurement report is sent based on the CLI size being above a second CLI threshold; or the measurement report is sent periodically.

[0148] In some embodiments, terminal device 110 further receives a first density indication of a channel state information reference signal (CSI-RS) from network device 130. The first density indication indicates a first density and a second density, the first density being higher than the second density. The first density is associated with a first portion of the subband, and the second density is associated with a second portion of the subband. The first portion is closer to a boundary between the subband and another subband than the second portion.

[0149] In some embodiments, the terminal device 110 also receives an order indication of a modulation and coding scheme (MCS) from the network device 130, the order indication indicating a first order and a second order, the first order being lower than the second order, and wherein the first order is associated with a first portion of the subband and the second order is associated with a second portion of the subband, the first portion being closer to a boundary between the subband and another subband than the second portion.

[0150] In some embodiments, the terminal device 110 also receives a second density indication of a demodulation reference signal (DMRS) from the network device, the second density indication indicating a third density and a fourth density, the third density type being higher than the fourth density, and wherein the third density is associated with a first portion of the subband, the fourth density is associated with a second portion of the subband, the first portion being closer to a boundary between the subband and another subband than the second portion.

[0151] Figure 7A flow chart illustrating a communication method 700 implemented at a network device according to some embodiments of the present disclosure is shown. The method 700 may be implemented at the network device 130 shown in FIG1 . For discussion purposes, the method 700 will be described with reference to FIG1 . It should be understood that the method 700 may include additional actions not shown and / or may omit some of the shown actions, and the scope of the present disclosure is not limited in this respect.

[0152] At 710, network device 130 transmits a configuration indicating a resource set within a subband of an SBFD time unit, including non-overlapping subbands, to at least one of first terminal device 110 and second terminal device 120. At 720, network device 130 receives a measurement report from first terminal device 110 that includes an inter-subband CLI size within the subband. The CLI size is associated with another subband of the SBFD time unit. The other subband has a different link direction than the first subband.

[0153] In some embodiments, the other subband is a neighboring subband of the subband, and wherein the CLI size comprises at least one of: a received signal strength indicator (RSSI); or a CLI level determined based on the RSSI.

[0154] In some embodiments, the configuration is a common measurement configuration for measuring inter-subband CLI size and intra-subband CLI size in a subband, wherein the inter-subband CLI in the subband is caused by a signal transmitted on another subband, and the intra-subband CLI in the subband is caused by another signal transmitted on a frequency band that at least partially overlaps with the first subband.

[0155] In some embodiments, the configuration includes a measurement type indication for the CLI.In some embodiments, the configuration includes a CLI measurement subband enable field indicating at least one subband of the plurality of subbands.

[0156] In some embodiments, the configuration is dedicated to measuring inter-subband CLI, and wherein the configuration indicates at least one inter-subband CLI resource, and the at least one inter-subband CLI resource is indicated by at least one of: a transmission configuration indication (TCI) state identifier (ID); a starting physical resource block (PRB) index; an ending PRB index; the number of PRBs; a subcarrier spacing (SCS); or a measurement periodicity and offset.

[0157] In some embodiments, the configuration indicates a resource set comprising a plurality of resource subsets. In some embodiments, the configuration further indicates a number of resource blocks shared between the plurality of resource subsets, and wherein the CLI measurement report includes a CLI size measured in a resource subset of the plurality of resource subsets.

[0158] In some embodiments, the configuration individually indicates each of the plurality of resource subsets, and wherein the CLI measurement report includes a CLI size measured in a resource subset of the plurality of resource subsets.

[0159] In some embodiments, the measurement report includes a CLI size for one of the plurality of resource subsets and at least one CLI offset value for at least one other of the plurality of resource subsets.

[0160] In some embodiments, the CLI size measured in the subset of resources is above a first CLI threshold.

[0161] In some embodiments, a reporting ID of the measurement report is associated with an ID of each of the plurality of resource subsets.

[0162] In some embodiments, the measurement report includes a CLI level matrix, wherein an element in the CLI level matrix is ​​associated with a corresponding resource subset of the plurality of resource subsets and an SBFD time unit, and wherein the element is determined based on the RSSI.

[0163] In some embodiments, the measurement report is sent based on the CLI size being above a second CLI threshold; or the measurement report is sent periodically.

[0164] In some embodiments, the network device 130 also sends a first density indication of a channel state information reference signal (CSI-RS) to the first terminal device, the first density indication indicating a first density and a second density, the first density being higher than the second density, and wherein the first density is associated with a first portion of the subband and the second density is associated with a second portion of the subband, the first portion being closer to a boundary between the subband and another subband than the second portion.

[0165] In some embodiments, the network device 130 also sends an order indication of a modulation and coding scheme (MCS) to the first terminal device, the order indication indicating a first order and a second order, the first order being lower than the second order, and wherein the first order is associated with a first portion of the subband and the second order is associated with a second portion of the subband, the first portion being closer to a boundary between the subband and another subband than the second portion.

[0166] In some embodiments, the network device 130 also sends a second density indication of a demodulation reference signal (DMRS) to the first terminal device, the second density indication indicating a first density type and a second density type, the first density type being higher than the second density type, and wherein the first type is associated with a first portion of the subband and the second type is associated with a second portion of the subband, the first portion being closer to a boundary between the subband and another subband than the second portion.

[0167] In some embodiments, network device 130 also sends a power indication to the second device that caused the CLI in the subband, the power indication indicating a first power and a second power, the first power being lower than the second power, and wherein the first power is associated with a first portion of the subband and the second power is associated with a second portion of the subband, the first portion being closer to a boundary between the subband and another subband than the second portion.

[0168] Figure 8 A flow chart illustrating a communication method 800 implemented at a terminal device according to some embodiments of the present disclosure is shown. Method 800 may be implemented at the terminal device 120 shown in FIG1 . For discussion purposes, method 800 will be described with reference to FIG1 . It should be understood that method 800 may include additional actions not shown and / or may omit some of the illustrated actions, and the scope of the present disclosure is not limited in this respect.

[0169] At 810, terminal device 120 receives a configuration from network device 130. The configuration indicates a resource set within a subband of an SBFD time unit that includes non-overlapping subbands. At 820, terminal device 120 transmits an inter-subband CLI-RS to terminal device 110 on another subband of the SBFD time unit. The other subband has a different link direction than the first subband.

[0170] In some embodiments, the terminal device 120 also receives a power indication from the network device 130, the power indication indicating a first power and a second power, the first power being lower than the second power, and wherein the first power is associated with a first portion of the subband and the second power is associated with a second portion of the subband, the first portion being closer to a boundary between the subband and another subband than the second portion.

[0171] Figure 9 A flow chart illustrating a communication method 900 implemented at a network device according to some embodiments of the present disclosure is shown. The method 900 may be implemented at the first network device 130 shown in FIG1 . For discussion purposes, the method 900 will be described with reference to FIG1 . It should be understood that the method 900 may include additional actions not shown and / or may omit some of the shown actions, and the scope of the present disclosure is not limited in this respect.

[0172] At 910, the first network device 130 obtains a configuration indicating a resource set within a subband of an SBFD time unit, the SBFD time unit including non-overlapping subbands. At 920, the first network device measures an inter-subband CLI size associated with another subband of the SBFD time unit on the resource set. The other subband has a different link direction than the first subband.

[0173] In some embodiments, the first network device 130 obtains the configuration by at least one of: receiving the configuration from the second network device; receiving the configuration via an Authentication Management Function (AMF) function; or determining the configuration at the first network device.

[0174] In some embodiments, the first network device 130 also sends a measurement report including the CLI size to the second network device.

[0175] In some embodiments, the first network device 130 also sends a first density indication of a sounding reference signal (SRS) to the first terminal device 110, the first density indication indicating a first density and a second density, the first density being higher than the second density, and wherein the first density is associated with a first portion of the subband and the second density is associated with a second portion of the subband, the first portion being closer to a boundary between the subband and another subband than the second portion.

[0176] In some embodiments, first network device 130 further sends a power indication to the second network device, the power indication indicating a first power and a second power, the first power being lower than the second power, and wherein the first power is associated with a first portion of the subband and the second power is associated with a second portion of the subband, the first portion being closer to a boundary between the subband and another subband than the second portion.

[0177] Figure 10 A flow chart illustrating a communication method 1000 implemented at a network device according to some embodiments of the present disclosure is shown. The method 1000 may be implemented at the second network device 140 shown in FIG1 . For discussion purposes, the method 1000 will be described with reference to FIG1 . It should be understood that the method 1000 may include additional actions not shown and / or may omit some of the shown actions, and the scope of the present disclosure is not limited in this respect.

[0178] At 1010, second network device 140 obtains a configuration indicating a resource set within a subband of a subband non-overlapping full-duplex (SBFD) time unit, the SBFD time unit including subbands that do not overlap with each other. At 1020, second network device 140 transmits an inter-subband cross-link interference reference signal (CLI-RS) to first network device 130 on another subband of the SBFD time unit. The other subband has a different link direction than the first subband.

[0179] In some embodiments, the second network device 140 obtains the configuration by at least one of: receiving the configuration from the first network device; receiving the configuration via an authentication management function (AMF) function; or determining the configuration at the second network device.

[0180] In some embodiments, the second network device 140 also receives a measurement report including the CLI size to the second network device.

[0181] In some embodiments, second network device 140 further receives a power indication from the first network device, the power indication indicating a first power and a second power, the first power being lower than the second power, and wherein the first power is associated with a first portion of the subband and the second power is associated with a second portion of the subband, the first portion being closer to a boundary between the subband and another subband than the second portion.

[0182] Figure 11 1 is a simplified block diagram of a device 1100 suitable for implementing some embodiments of the present disclosure. Device 1100 can be considered as another example embodiment of terminal devices 110, 120, 150 or network devices 130 and 140 as shown in FIG1 . Therefore, device 1100 can be implemented at the aforementioned network device or terminal device, or implemented as at least a part of the aforementioned network device or terminal device.

[0183] As shown, device 1100 includes a processor 1110, a memory 1120 coupled to processor 1110, a suitable transmitter (TX) and receiver (RX) 1140 coupled to processor 1110, and a communication interface coupled to TX / RX 1140. Memory 1120 stores at least a portion of a program 1130. TX / RX 1140 is configured for bidirectional communication. TX / RX 1140 has at least one antenna to facilitate communication, although in practice, access nodes referred to herein may have multiple antennas. The communication interface may represent any interface required for communication with other network elements, such as an X2 interface for bidirectional communication between gNBs or eNBs, an S1 interface for communication between a Mobility Management Entity (MME) / Serving Gateway (S-GW) and a gNB or eNB, a Un interface for communication between a gNB or eNB and a relay node (RN), or a Uu interface for communication between a gNB or eNB and a terminal device.

[0184] Assume that the program 1130 includes program instructions that, when executed by the associated processor 1110, enable the device 1100 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to Figures 1-16. The embodiments herein may be implemented by computer software executable by the processor 1110 of the device 1100, or by hardware, or by a combination of software and hardware. The processor 1110 may be configured to implement various embodiments of the present invention. In addition, the combination of the processor 1110 and the memory 1120 may form a processing component 1150 suitable for implementing various embodiments of the present disclosure.

[0185] Memory 1120 may be of any type suitable for the local technology network and may be implemented using any suitable data storage technology, such as, by way of non-limiting example, non-transitory computer-readable storage media, semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory, and removable memory. Although only one memory 1120 is shown in device 1100, several physically distinct memory modules may be present in device 1100. Processor 1110 may be of any type suitable for the local technology network and may include, by way of non-limiting example, one or more of a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), and a processor based on a multi-core processor architecture. Device 1100 may have multiple processors, some of which are dedicated integrated circuit chips that are time-slave to a clock that synchronizes the main processor.

[0186] In some embodiments, a terminal device includes circuitry configured to perform method 600 or 800 .

[0187] In some embodiments, a network device includes circuitry configured to perform method 700 , 900 , or 1000 .

[0188] The components included in the apparatus and / or device of the present disclosure can be implemented in various ways, including software, hardware, firmware or any combination thereof. In one embodiment, one or more units can be implemented using software and / or firmware of machine executable instructions, such as stored on a storage medium. In addition to or in place of machine executable instructions, some or all of the units in the apparatus and / or device can be implemented at least in part by one or more hardware logic components. For example, but not limited to, illustrative types of hardware logic components that can be used include field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system on chip systems (SOCs), complex programmable logic devices (CPLDs), etc.

[0189] In general, various embodiments of the present disclosure may be implemented in hardware or dedicated circuits, software, logic, or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software, which may be executed by a controller, microprocessor, or other computing device. Although various aspects of the embodiments of the present disclosure are illustrated and described as block diagrams, flow charts, or using some other graphical representation, it will be understood that the blocks, devices, systems, technical terminal devices, or methods described herein may be implemented in hardware, software, firmware, dedicated circuits or logic, general-purpose hardware or a controller or other computing device, or some combination thereof, as non-limiting examples.

[0190] The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer-readable storage medium. The computer program product includes computer-executable instructions, such as those included in program modules, which are executed in a device on a target real or virtual processor to perform the above-referenced Figures 2 to 10 In general, program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The functionality of program modules can be combined or split between program modules as needed in various embodiments. The machine-executable instructions of program modules can be executed in local or distributed devices. In distributed devices, program modules can be located in local and remote storage media.

[0191] The program code for executing the method of the present disclosure can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer or other programmable data processing device so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code can be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine, partially on a remote machine, or entirely on a remote machine or server.

[0192] The above program code can be embodied on a machine-readable medium, which can be any tangible medium that can contain or store a program used by or in conjunction with an instruction execution system, device or apparatus. The machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium can include, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared or semiconductor system, device or apparatus, or any suitable combination of the foregoing. More specific examples of machine-readable storage media will include an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0193] In addition, although described operation in a particular order, this should not be understood as requiring to perform these operations in the particular order shown or in sequential order, or to perform all illustrated operations to achieve desired results. In some cases, multitasking and parallel processing may be advantageous. Similarly, although included in the above discussion some specific embodiment details, these details should not be interpreted as limiting the scope of the present disclosure, but should be interpreted as descriptions of features specific to a particular embodiment. Some features described in the context of separate embodiments also can be combined in a single embodiment. On the contrary, the various features described in the context of a single embodiment also can be realized separately or with any suitable subcombination in multiple embodiments.

[0194] Although the present disclosure has been described in language specific to structural features and / or methodological acts, it should be understood that the present disclosure defined in the appended claims is not necessarily limited to the specific features or acts described above. Instead, the specific features and acts described above are disclosed as example forms of implementing the claims.

[0195] In summary, the embodiments of the present disclosure can provide the following solutions.

[0196] A first terminal device includes a transceiver and a processor communicatively coupled to the transceiver. The processor is configured to cause the first terminal device to: receive, from a network device, a configuration indicating a resource set within a subband of a subband non-overlapping full-duplex (SBFD) time unit including subbands that do not overlap with each other; measure, on the resource set, a magnitude of inter-subband cross-link interference (CLI) associated with another subband of the SBFD time unit, the other subband having a link direction different from that of the subband; and send a measurement report including the CLI magnitude to the network device.

[0197] In one embodiment, the another sub-band is a neighboring sub-band of the sub-band, and the CLI size comprises at least one of: a received signal strength indicator (RSSI); or a CLI level determined based on the RSSI.

[0198] In one embodiment, wherein the configuration is a common measurement configuration for measuring inter-subband CLI size and intra-subband CLI size in a subband, the inter-subband CLI in the subband is caused by a signal transmitted on another subband, and the intra-subband CLI in the subband is caused by another signal transmitted on a frequency band that at least partially overlaps with the first subband.

[0199] In one embodiment, the configuration includes a measurement type indication for the CLI.

[0200] In one embodiment, the first subband is one of multiple subbands in the SBFD time unit, wherein the multiple subbands have the same frequency bandwidth and the same link direction, and wherein the first terminal device is further enabled to: determine a corresponding resource set in each of the multiple subbands based on the resource set; measure a corresponding CLI size on the corresponding resource set; and send a measurement report including the corresponding CLI size.

[0201] In one embodiment, the configuration includes a CLI measurement subband enable field, which indicates at least one subband among the multiple subbands, and wherein the first terminal device is enabled to determine the corresponding resource set by the following steps: determining the corresponding resource set among the at least one subband.

[0202] In one embodiment, the configuration is dedicated to measuring the inter-subband CLI, and the configuration indicates at least one inter-subband CLI resource, and the at least one inter-subband CLI resource is indicated by at least one of the following: a transmission configuration indication (TCI) state identifier (ID); a starting physical resource block PRB index; an ending PRB index; the number of PRBs; a subcarrier spacing (SCS); or a measurement periodicity and offset.

[0203] In one embodiment, the configuration indicates a resource set comprising a plurality of resource subsets.

[0204] In one embodiment, wherein the configuration further indicates a number of resource blocks shared between the plurality of resource subsets, and wherein the CLI measurement report includes a CLI size measured in a resource subset of the plurality of resource subsets.

[0205] In one embodiment, wherein the configuration individually indicates each of the plurality of resource subsets, and wherein the CLI measurement report comprises a CLI size measured in a resource subset of the plurality of resource subsets.

[0206] In one embodiment, the measurement report includes a CLI size for a resource subset of the plurality of resource subsets and at least one CLI offset value for at least one other resource subset of the plurality of resource subsets.

[0207] In one embodiment, the CLI size measured in the resource subset is above a first CLI threshold.

[0208] In one embodiment, a report identification (ID) of the measurement report is associated with at least one of a configured ID or another ID of each of the plurality of resource subsets.

[0209] In one embodiment, the measurement report includes a CLI level matrix, and wherein elements in the CLI level matrix are associated with corresponding resource subsets of the plurality of resource subsets and the SBFD time unit, and wherein the elements are determined based on the RSSI.

[0210] In one embodiment, at least one of the following is performed: the measurement report is sent based on the CLI size being higher than a second CLI threshold; or the measurement report is sent periodically.

[0211] In one embodiment, the first terminal device is further configured to: receive a first density indication of a channel state information reference signal (CSI-RS) from the network device, the first density indication indicating a first density and a second density, the first density being higher than the second density, and wherein the first density is associated with a first portion of the subband and the second density is associated with a second portion of the subband, the first portion being closer to a boundary between the subband and the other subband than the second portion.

[0212] In one embodiment, the first terminal device is further caused to: receive an order indication of a modulation and coding scheme (MCS) from the network device, the order indication indicating a first order and a second order, the first order being lower than the second order, and wherein the first order is associated with a first part of the subband and the second order is associated with a second part of the subband, the first part being closer to a boundary between the subband and the other subband than the second part.

[0213] In one embodiment, the first terminal device is further caused to: receive a second density indication of a demodulation reference signal (DMRS) from the network device, the second density indication indicating a third density and a fourth density, the third density type being higher than the fourth density, and wherein the third density is associated with a first part of the subband and the fourth density is associated with a second part of the subband, the first part being closer to the boundary between the subband and the other subband than the second part.

[0214] A network device includes a transceiver and a processor communicatively coupled to the transceiver. The processor is configured to cause the network device to: send a configuration indicating a resource set within a subband of a subband non-overlapping full-duplex (SBFD) time unit including subbands that do not overlap with each other to at least one of a first terminal device and a second terminal device; and receive a measurement report from the first terminal device, the measurement report including a cross-link interference (CLI) magnitude in the subband, the CLI magnitude being associated with another subband of the SBFD time unit, the other subband having a link direction different from that of the subband.

[0215] In one embodiment, the another sub-band is a neighboring sub-band of the sub-band, and the CLI size comprises at least one of: a received signal strength indicator (RSSI); or a CLI level determined based on the RSSI.

[0216] In one embodiment, wherein: the configuration is a common measurement configuration for measuring inter-subband CLI size and intra-subband CLI size in a subband, wherein the inter-subband CLI in the subband is caused by a signal transmitted on another subband, and the intra-subband CLI in the subband is caused by another signal transmitted on a frequency band that at least partially overlaps with the first subband.

[0217] In one embodiment, the configuration includes a measurement type indication for the CLI.

[0218] In one embodiment, the configuration includes a CLI measurement subband enable field indicating at least one subband among the plurality of subbands.

[0219] In one embodiment, the configuration is dedicated to measuring the inter-subband CLI, and the configuration indicates at least one inter-subband CLI resource, and the at least one inter-subband CLI resource is indicated by at least one of the following: a transmission configuration indication (TCI) state identifier (ID); a starting physical resource block PRB index; an ending PRB index; the number of PRBs; a subcarrier spacing (SCS); or a measurement periodicity and offset.

[0220] In one embodiment, the configuration indicates a resource set comprising a plurality of resource subsets.

[0221] In one embodiment, wherein the configuration further indicates a number of resource blocks shared between the plurality of resource subsets, and wherein the CLI measurement report includes a CLI size measured in a resource subset of the plurality of resource subsets.

[0222] In one embodiment, wherein the configuration individually indicates each of the plurality of resource subsets, and wherein the CLI measurement report comprises a CLI size measured in a resource subset of the plurality of resource subsets.

[0223] In one embodiment, the measurement report includes a CLI size for a resource subset of the plurality of resource subsets and at least one CLI offset value for at least one other resource subset of the plurality of resource subsets.

[0224] In one embodiment, the CLI size measured in the resource subset is above a first CLI threshold.

[0225] In one embodiment, a report identification (ID) of the measurement report is associated with an ID of each of the plurality of resource subsets.

[0226] In one embodiment, the measurement report includes a CLI level matrix, and wherein elements in the CLI level matrix are associated with corresponding resource subsets of the plurality of resource subsets and the SBFD time unit, and wherein the elements are determined based on the RSSI.

[0227] In one embodiment, at least one of the following is performed: the measurement report is sent based on the CLI size being higher than a second CLI threshold; or the measurement report is sent periodically.

[0228] In one embodiment, the network device is further configured to: send a first density indication of a channel state information reference signal (CSI-RS) to the first terminal device, the first density indication indicating a first density and a second density, the first density being higher than the second density, and wherein the first density is associated with a first part of the subband, and the second density is associated with a second part of the subband, the first part being closer to the boundary between the subband and the other subband than the second part.

[0229] In one embodiment, the network device is further configured to: send an order indication of a modulation and coding scheme (MCS) to the first terminal device, the order indication indicating a first order and a second order, the first order being lower than the second order, and wherein the first order is associated with a first part of the subband and the second order is associated with a second part of the subband, the first part being closer to a boundary between the subband and the other subband than the second part.

[0230] In one embodiment, the network device is further configured to: send a second density indication of a demodulation reference signal (DMRS) to the first terminal device, the second density indication indicating a first density type and a second density type, the first density type being higher than the second density type, and wherein the first type is associated with a first part of the subband, and the second type is associated with a second part of the subband, the first part being closer to the boundary between the subband and the other subband than the second part.

[0231] In one embodiment, the network device is further caused to: send a power indication to the second device that caused the CLI in the subband, the power indication indicating a first power and a second power, the first power being lower than the second power, and wherein the first power is associated with a first portion of the subband and the second power is associated with a second portion of the subband, the first portion being closer to a boundary between the subband and the other subband than the second portion.

[0232] The second terminal device includes a transceiver and a processor communicatively coupled to the transceiver. The processor is configured to cause the first second device to: receive, from a network device, a configuration indicating a resource set within a subband of a subband non-overlapping full-duplex (SBFD) time unit including subbands that do not overlap with each other; and transmit an inter-subband cross-link interference reference signal (CLI-RS) to the first terminal device on another subband of the SBFD time unit, the other subband having a link direction different from that of the subband.

[0233] In one embodiment, the second terminal device is further caused to: receive a power indication from the network device, the power indication indicating a first power and a second power, the first power being lower than the second power, and wherein the first power is associated with a first part of the subband and the second power is associated with a second part of the subband, the first part being closer to the boundary between the subband and the other subband than the second part.

[0234] A first network device includes a transceiver and a processor communicatively coupled to the transceiver. The processor is configured to cause the first network device to: obtain a configuration indicating a set of resources within a subband of a subband non-overlapping full-duplex (SBFD) time unit, the SBFD time unit including subbands that do not overlap with each other; and measure, on the set of resources, a magnitude of inter-subband cross-link interference (CLI) associated with another subband of the SBFD time unit, the other subband having a different link direction than the subband.

[0235] In one embodiment, the first network device is further caused to obtain the configuration by at least one of: receiving the configuration from a second network device; receiving the configuration via an authentication management function (AMF) function; or determining the configuration at the first network device.

[0236] In one embodiment, the first network device is further caused to send a measurement report including the CLI size to the second network device.

[0237] In one embodiment, the first network device is further caused to: send a first density indication of a sounding reference signal (SRS) to the first terminal device, the first density indication indicating a first density and a second density, the first density being higher than the second density, and wherein the first density is associated with a first part of the subband, and the second density is associated with a second part of the subband, the first part being closer to the boundary between the subband and the other subband than the second part.

[0238] In one embodiment, the first network device is further caused to: send a power indication to the second network device, the power indication indicating a first power and a second power, the first power being lower than the second power, and wherein the first power is associated with a first portion of the subband and the second power is associated with a second portion of the subband, the first portion being closer to a boundary between the subband and the other subband than the second portion.

[0239] A second network device includes a transceiver and a processor communicatively coupled to the transceiver. The processor is configured to cause the second network device to: obtain a configuration indicating a set of resources within a subband of a subband non-overlapping full-duplex (SBFD) time unit, the SBFD time unit including subbands that do not overlap with each other; and send an inter-subband cross-link interference reference signal (CLI-RS) to the first network device on another subband of the SBFD time unit, the another subband having a different link direction than the first subband.

[0240] In one embodiment, the second network device is caused to obtain the configuration by at least one of: receiving the configuration from the first network device; receiving the configuration via an Authentication Management Function (AMF) function; or determining the configuration at the second network device.

[0241] In one embodiment, the second network device is further caused to receive a measurement report including the CLI size to the second network device.

[0242] In one embodiment, the second network device is further caused to: receive a power indication from the first network device, the power indication indicating a first power and a second power, the first power being lower than the second power, and wherein the first power is associated with a first portion of the subband and the second power is associated with a second portion of the subband, the first portion being closer to a boundary between the subband and the other subband than the second portion.

[0243] A communication method comprises: receiving a configuration at a first terminal device and from a network device, the configuration indicating a resource set within a subband of a subband non-overlapping full-duplex (SBFD) time unit, the SBFD time unit including subbands that do not overlap with each other; measuring, on the resource set, a subband cross-link interference (CLI) size associated with another subband of the SBFD time unit, the other subband having a link direction different from that of the subband; and sending a measurement report including the CLI size to the network device.

[0244] A communication method comprises: sending a configuration at a network device and to at least one of a first terminal device and a second terminal device, the configuration indicating a set of resources within a subband of a subband non-overlapping full-duplex (SBFD) time unit, the SBFD time unit comprising subbands that do not overlap with each other; and receiving a measurement report from the first terminal device, the measurement report comprising a subband cross-link interference (CLI) size in the subband, the CLI size being associated with another subband of the SBFD time unit, the other subband having a link direction different from that of the subband.

[0245] A communication method, comprising: receiving a configuration at a second terminal device and from a network device, the configuration indicating a set of resources within a subband of a subband non-overlapping full-duplex (SBFD) time unit, the SBFD time unit including subbands that do not overlap with each other; and sending an inter-subband cross-link interference reference signal (CLI-RS) to a first terminal device on another subband of the SBFD time unit, the other subband having a link direction different from that of the subband.

[0246] A communication method includes: obtaining a configuration at a first network device, the configuration indicating a resource set within a subband of a subband non-overlapping full-duplex (SBFD) time unit, the SBFD time unit including subbands that do not overlap with each other; and measuring, on the resource set, a magnitude of cross-link interference (CLI) between subbands associated with another subband of the SBFD time unit, the other subband having a link direction different from that of the subband.

[0247] A communication method includes: obtaining a configuration indicating a set of resources within a subband of a subband non-overlapping full-duplex (SBFD) time unit, the SBFD unit including subbands that do not overlap with each other; and sending an inter-subband cross-link interference reference signal (CLI-RS) to a first network device on another subband of the SBFD time unit, the another subband having a link direction different from that of the subband.

[0248] A computer-readable medium having instructions stored thereon, which, when executed on at least one processor, causes the at least one processor to perform the above method.

Claims

1. A first terminal device, comprising: transceiver; as well as a processor communicatively coupled to the transceiver, and the processor is configured to cause the first terminal device to: receiving a configuration from a network device, the configuration indicating a set of resources within a subband of a subband non-overlapping full-duplex (SBFD) time unit, the SBFD time unit comprising subbands that do not overlap with each other; measuring, on the set of resources, a magnitude of inter-subband cross-link interference (CLI) associated with another subband of the SBFD time unit, the another subband having a different link direction than the subband; and Sending a measurement report including the CLI size to the network device.

2. The first terminal device according to claim 1, wherein the other sub-band is an adjacent sub-band of the sub-band, and wherein the CLI size includes at least one of the following: Received Signal Strength Indicator (RSSI); or A CLI level is determined based on the RSSI.

3. The first terminal device according to claim 1 or 2, wherein: The configuration is a common measurement configuration for measuring inter-subband CLI size and intra-subband CLI size in the subband, The inter-subband CLI in the subband is caused by a signal transmitted on the other subband, and The intra-subband CLI in the subband is caused by another signal transmitted on a frequency band that at least partially overlaps with the subband. The first terminal device according to claim 3 , wherein the configuration includes a measurement type indication for the CLI.

5. The first terminal device according to claim 3 or 4, wherein the sub-band is one of a plurality of sub-bands of the SBFD time unit, wherein the plurality of sub-bands have the same frequency bandwidth and the same link direction, and wherein the first terminal device is further caused to: determining, based on the resource set, a corresponding resource set in each of the plurality of subbands; measuring a corresponding CLI size on the corresponding resource set; and Sending the measurement report including the corresponding CLI size.

6. The first terminal device according to claim 5, wherein the configuration includes a CLI measurement subband enable field, the CLI measurement subband enable field indicating at least one subband of the plurality of subbands, and wherein the first terminal device is caused to determine the corresponding resource set by: The corresponding resource set is determined in the at least one subband.

7. The first terminal device according to any one of claims 1 to 6, wherein the configuration is dedicated to measuring the inter-subband CLI, and wherein the configuration indicates at least one inter-subband CLI resource, and the at least one inter-subband CLI resource is indicated by at least one of the following: Transmission Configuration Indication (TCI) status identifier (ID); Starting physical resource block PRB index; End PRB index; the number of PRBs; Subcarrier Spacing (SCS); or Measures periodicity and offset.

8. The first terminal device according to any one of claims 1 to 7, wherein the configuration indicates: the resource set includes a plurality of resource subsets.

9. The first terminal device of claim 8, wherein the configuration further indicates a number of resource blocks shared between the plurality of resource subsets, and wherein the CLI measurement report comprises a CLI size measured in a resource subset of the plurality of resource subsets.

10. The first terminal device of claim 8, wherein the configuration individually indicates each of the plurality of resource subsets, and wherein the CLI measurement report comprises a CLI size measured in a resource subset of the plurality of resource subsets.

11. The first terminal device according to claim 9 or 10, wherein the measurement report comprises a CLI size for a resource subset of the plurality of resource subsets, and at least one CLI offset value for at least one other resource subset of the plurality of resource subsets. 12 . The first terminal device according to claim 9 , wherein the CLI size measured in the resource subset is above a first CLI threshold.

13. The first terminal device according to claim 9 or 10, wherein a report identification (ID) of the measurement report is associated with at least one of the configured ID or another ID of each resource subset of the plurality of resource subsets.

14. The first terminal device according to claim 9 or 10, wherein the measurement report includes a CLI level matrix, and wherein the elements in the CLI level matrix are associated with corresponding resource subsets of the multiple resource subsets and the SBFD time unit, and wherein the elements are determined based on RSSI.

15. The first terminal device according to claim 1, wherein at least one of the following exists: The measurement report is sent based on the CLI size being higher than a second CLI threshold; or The measurement reports are sent periodically.

16. The first terminal device according to claim 1, wherein the first terminal device is further configured to: receiving a first density indication of a channel state information reference signal (CSI-RS) from the network device, the first density indication indicating a first density and a second density, the first density being higher than the second density, and The first density is associated with a first portion of the sub-band and the second density is associated with a second portion of the sub-band, the first portion being closer to a boundary between the sub-band and the further sub-band than the second portion.

17. The first terminal device according to claim 1, wherein the first terminal device is further configured to: receiving an order indication of a modulation and coding scheme (MCS) from the network device, the order indication indicating a first order and a second order, the first order being lower than the second order, and The first order is associated with a first portion of the subband and the second order is associated with a second portion of the subband, the first portion being closer to a boundary between the subband and the further subband than the second portion.

18. The first terminal device according to claim 1, wherein the first terminal device is further configured to: receiving a second density indication of a demodulation reference signal (DMRS) from the network device, the second density indication indicating a third density and a fourth density, the third density type being higher than the fourth density, and The third density is associated with a first portion of the sub-band and the fourth density is associated with a second portion of the sub-band, the first portion being closer to a boundary between the sub-band and the further sub-band than the second portion.

19. A network device comprising: transceiver; as well as a processor communicatively coupled to the transceiver, and the processor is configured to cause the network device to: sending a configuration to at least one of the first terminal device and the second terminal device, the configuration indicating a set of resources within a subband of a subband non-overlapping full-duplex (SBFD) time unit, the SBFD time unit including subbands that do not overlap with each other; as well as A measurement report is received from the first terminal device, the measurement report including a subband cross-link interference (CLI) size in the subband, the CLI size being associated with another subband of the SBFD time unit, the other subband having a different link direction than the subband.

20. The network device of claim 19, wherein the another sub-band is a neighboring sub-band of the sub-band, and wherein the CLI size comprises at least one of: Received Signal Strength Indicator (RSSI); or A CLI level is determined based on the RSSI.

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