Method, apparatus, and computer readable medium for management of cross-link interference

Abstract

The embodiment of the invention relates to a method, equipment and a computer readable medium for management of cross-link interference (CLI). According to the embodiment of the invention, a communication method implemented at a first terminal device is provided. In the method, a first terminal device determines a first transmission direction associated with a communication resource. And the first terminal equipment executes data transmission on the communication resource according to the fact that the transmission direction of the data transmission between the first terminal equipment and the first network equipment to be executed on the communication resource is determined to be the same as the first transmission direction.

Description

Technical Field

[0001] Embodiments of the present disclosure relate generally to the field of communications, and more particularly to methods, devices, and computer-readable media for management of cross-link interference (CLI). Background Art

[0002] With the development of communication technology, network equipment has been designed to operate in a duplex communication mode to improve communication efficiency. In duplex communication mode, the network equipment can send downlink (DL) data transmission and receive uplink (UL) data transmission at the same time. Therefore, there may be a situation where the terminal device simultaneously receives downlink data transmission from the network device and uplink data transmission from another terminal device to the network device. That is, CLI may occur if there are different services / signals / channels in (multiple) the same / adjacent communications. CLI may also occur between network devices operating in duplex communication mode. For example, there may be a situation where the network device receives uplink data transmission from a terminal device and downlink data transmission from another network device to another terminal device. Traditionally, network devices eliminate CLI by coordinating UL-DL transmission configurations with each other. In the case where CLI exists on the terminal device side or the network device side, efficient utilization of communication resources is a key aspect. Summary of the invention

[0003] In general, example embodiments of the present disclosure relate to methods, devices, and computer-readable media for communications.

[0004] In a first aspect, a communication method implemented at a first terminal device is provided. In the method, the first terminal device determines a first transmission direction associated with a communication resource. The first terminal device performs data transmission on the communication resource based on determining that the transmission direction of the data transmission between the first terminal device and the first network device to be performed on the communication resource is the same as the first transmission direction.

[0005] In a second aspect, a communication method implemented at a first terminal device is provided. In the method, the first terminal device receives an indication from a first network device for scheduling a first communication resource for a first data transmission from the first terminal device to the first network device and scheduling a second communication resource for a second data transmission from the first terminal device to the first network device. The first terminal device determines a first transmission direction associated with the first communication resource and a second transmission direction associated with the second communication resource. Based on determining that the first transmission direction is opposite to the transmission direction from the first terminal device to the first network device, the first terminal device performs a first data transmission on the first communication resource using a first transmission power. Based on determining that the second transmission direction is the same as the transmission direction from the first terminal device to the first network device, the first terminal device performs a second data transmission on the second communication resource using a second transmission power greater than the first transmission power.

[0006] In a third aspect, a communication method implemented at a first terminal device is provided. In the method, the first terminal device receives a command from a first network device, the command comprising a first part for pre-scheduling a communication resource for data transmission between the first terminal device and the first network device and a second part for defining a parameter set for a channel access procedure. The first terminal device performs a channel access procedure on the communication resource based on the parameter set. The first terminal device performs data transmission on the communication resource based on determining that a channel on the communication resource is idle. The parameter set of the channel access procedure corresponds to a relationship between a transmission direction of the data transmission to be performed and a first transmission direction associated with the communication resource.

[0007] In a fourth aspect, a communication method implemented at a first terminal device is provided. In the method, the first terminal device receives a first reference signal from a first network device on a communication resource. The first terminal device receives a second reference signal from a second terminal device on the communication resource for CLI measurement between the first terminal device and the second terminal device. The first reference signal and the second reference signal are orthogonal.

[0008] In a fifth aspect, a communication method implemented at a first network device is provided. In the method, the first network device determines a first transmission direction associated with a communication resource. The first network device performs data transmission on the communication resource based on determining that the transmission direction of the data transmission between the first network device and the first terminal device to be performed on the communication resource is the same as the first transmission direction.

[0009] 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 understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Some example embodiments will now be described with reference to the accompanying drawings, in which:

[0011] Figure 1 illustrates an example environment in which some embodiments of the present disclosure may be implemented;

[0012] Figure 2 illustrates a signaling procedure for UL data transmission with CLI management according to some embodiments of the present disclosure;

[0013] Figure 3A illustrates an example of a first time slot configuration according to some embodiments of the present disclosure;

[0014] Figure 3B illustrates an example of a second time slot configuration according to some embodiments of the present disclosure;

[0015] Figure 3C illustrates an example of a third time slot configuration according to some embodiments of the present disclosure;

[0016] Figure 4 illustrates an example environment in which some embodiments of the present disclosure may be implemented;

[0017] Figure 5 illustrates a signaling process for data transmission with CLI management according to some embodiments of the present disclosure;

[0018] Fig. 6A illustrates an example of a fourth time slot configuration according to some embodiments of the present disclosure;

[0019] Figure 6B illustrates an example of a fifth time slot configuration according to some embodiments of the present disclosure;

[0020] Figure 7 illustrates an example environment in which some embodiments of the present disclosure may be implemented;

[0021] Figure 8 illustrates a signaling process for data transmission with CLI management according to some embodiments of the present disclosure;

[0022] Fig. 9A illustrates an example of a sixth time slot configuration according to some embodiments of the present disclosure;

[0023] Fig. 9B illustrates an example of a seventh time slot configuration according to some embodiments of the present disclosure;

[0024] Fig.10 A flowchart illustrating an example method implemented at a first terminal device according to some embodiments of the present disclosure is illustrated;

[0025] Fig.11A flowchart illustrating an example method implemented at a first terminal device according to some embodiments of the present disclosure is illustrated;

[0026] Fig.12 A flowchart illustrating an example method implemented at a first terminal device according to some embodiments of the present disclosure is illustrated;

[0027] Fig.13 A flowchart illustrating an example method implemented at a first terminal device according to some embodiments of the present disclosure is illustrated;

[0028] Fig.14 A flowchart illustrating an example method implemented at a first network device according to some embodiments of the present disclosure; and

[0029] Fig.15 A simplified block diagram of a device suitable for implementing an example embodiment of the present disclosure is illustrated.

[0030] Throughout the drawings, the same or similar reference numerals refer to the same or similar elements. DETAILED DESCRIPTION

[0031] 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 to illustrate and help those skilled in the art to understand and implement the present disclosure, and do not represent any limitation on the scope of the present disclosure. The disclosure described herein can be implemented in various other ways except the way described below.

[0032] 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.

[0033] 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, smart phones, personal digital assistants (PDAs), portable computers, tablets, wearable devices, Internet of Things (IoT) devices, ultra-reliable low-latency communications (URLLC) devices, Internet of Everything (IoE) devices, machine type communications (MTC) devices, vehicle-mounted devices for V2X communications (where X represents pedestrians, vehicles, or infrastructure / networks), devices for integrated access and backhaul (IAB), small data transfer (SDT), mobility, multicast and broadcast services (MBS), positioning, dynamic / flexible duplexing in commercial networks, Reduced Capability (RedCap), space vehicles or air vehicles (including Unmanned Aerial Systems (UAS)) in non-terrestrial networks (NTN) (including satellites and high altitude platforms (HAP)), extended reality (XR) devices (including different types of reality, such as augmented reality (AR), mixed reality (MR) and virtual reality (VR)), unmanned aerial vehicles (UAV) commonly known as drones (it is an aircraft without any human pilot), devices on high-speed trains (HST), or image capture devices (such as digital cameras), sensors, gaming devices, music storage and playback devices, or Internet devices that enable wireless or wired Internet access and browsing, etc. "Terminal device" may also have "multicast / broadcast" features to support public safety and critical missions, V2X applications, transparent IPv4 / IPv6 multicast delivery, IPTV, smart TV, radio services, wireless software delivery, group communication and IoT applications. It may also include one or more subscriber identity modules (SIMs) (referred to as multi-SIM). The term "terminal device" may be used interchangeably with UE, mobile station, subscriber station, mobile terminal, user terminal or wireless device.

[0034] As used herein, the term "network equipment" refers to equipment that is capable of providing or hosting a cell or coverage area in which a terminal device can communicate. Examples of network equipment include, but are not limited to, Node B (NodeB or NB), evolved NodeB (eNodeB or eNB), next generation NodeB (gNB), transmission reception point (TRP), remote radio unit (RRU), radio head (RH), remote radio head (RRH), IAB node, low power node (such as femto node, pico node), reconfigurable intelligent surface (RIS), network controlled repeater, etc.

[0035] The terminal device or network device may have artificial intelligence (AI) or machine learning capabilities. It usually includes a model that has been trained from a large amount of collected data according to a specific function and can be used to predict certain information. The terminal or network device can operate in 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 further operate on licensed / unlicensed / shared spectrum. In the multi-radio dual connection (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-duplex modes.

[0036] The network equipment may have network energy saving, self-organizing network (SON) / minimization of driving test (MDT) functions. The terminal may have a power saving function.

[0037] The embodiments of the present disclosure may be executed 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, and a channel emulator.

[0038] Embodiments of the present disclosure may be performed according to any generation of communication protocols currently known or to be 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.

[0039] In one embodiment, the 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, the first information may be sent from the first network device to the terminal device, and the second information may be sent from the second network device directly or via the first network device to the terminal device. In one embodiment, information related to the configuration for 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 the reconfiguration of the terminal device configured by the second network device may be sent from the second network device directly or via the first network device to the terminal device.

[0040] As used herein, the singular forms "a", "an", and "the" shall also include the plural forms unless the context clearly indicates otherwise. The term "including" and its variations shall be understood as open terms, meaning "including but not limited to". The term "based on" shall be understood as "based at least in part on". The terms "one embodiment" and "embodiment" shall be understood as "at least one embodiment". The term "another embodiment" shall be understood as "at least one other embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may be included below.

[0041] 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 one can choose among many functional alternatives that can be used, and that such a choice is not necessarily better, lesser, higher, or otherwise preferred over other choices.

[0042] The term "circuitry" as used herein may refer to a combination of hardware circuits and / or hardware circuits and software. For example, a circuit system may be a combination of analog and / or digital hardware circuits and software / firmware. As another example, a circuit system may be any part of a hardware processor with software, including (multiple) digital signal processors, software, and (multiple) memories, which work together to cause devices such as terminal devices or network devices to perform various functions. In another example, a circuit system may be a hardware circuit and / or processor, such as a microprocessor or a part of a microprocessor, which requires software / firmware to operate, but when the operation is not required, the software may not exist. As used herein, the term circuit system also encompasses the implementation of only a hardware circuit or (multiple) processors or a part of a hardware circuit or (multiple) processors and their accompanying software and / or firmware.

[0043] As described above, CLI may occur between different terminal devices or between different network devices operating in duplex communication mode. One solution for CLI management is for network devices to coordinate UL-DL transmission configurations with each other. However, such backhaul coordination-based CLI management may be limited. For example, in the coordination mechanism, transmission direction information or reference signal configuration needs to be exchanged between TRPs through Xn, which results in greater delays and lower reliability. There is no mechanism for configuring short-term CLI measurements. In some scenarios, network devices may belong to different operators and may not be able to coordinate with each other. There is no mechanism for configuring CLI measurements without the need for coordination between network devices. In addition, how to reduce the overhead of CLI measurements is also a problem that needs to be solved.

[0044] The exemplary embodiments of the present disclosure propose a mechanism for short-term CLI management. In this mechanism, a transmission direction with priority on a corresponding communication resource is defined. If the transmission direction of the data transmission to be performed on the communication resource is the same as the transmission direction with priority on the communication resource, the transmitter (e.g., a terminal device or a network device) can directly perform the data transmission on the communication resource, or can send a reference signal associated with the communication resource before performing the data transmission. If the transmission direction of the data transmission to be performed on the communication resource is opposite to the transmission direction with priority on the communication resource, the transmitter needs to first detect the CLI (e.g., by detecting an energy or resource-specific reference signal). If the detected CLI is within a predetermined condition, the transmitter can perform data transmission on the communication resource; otherwise, this indicates that there is a CLI on the communication resource, and the transmitter can abandon the data transmission, or perform the data transmission at a lower power or perform the data transmission on another communication resource. In an exemplary embodiment, the transmitter can implicitly or explicitly provide feedback "CLI exists" or "CLI does not exist" after detecting the CLI. In this way, short-term interference measurement can be achieved. In addition, interference management can be implemented in a multi-operator scenario.

[0045] Figure 1 An example environment 100 is illustrated in which example embodiments of the present disclosure may be implemented.

[0046] Environment 100 (which may be part of a communication network) includes a first network device 110, a second network device 120, a first terminal device 130, and a second terminal device 140. First network device 110 and second network device 120 may operate in a duplex communication mode. For example, in some cases, first network device 110 may simultaneously receive an uplink data transmission from first terminal device 130 and a downlink data transmission from second network device 120. Additionally or alternatively, environment 100 may also include a third terminal device 150. In some cases, first network device 110 may simultaneously receive an uplink data transmission from first terminal device 130 and a downlink data transmission from first network device 110 to third terminal device 150, the downlink data transmission being reflected by surrounding objects.

[0047] It should be understood that the number of terminal devices and network devices shown in environment 100 is for illustration purposes only and does not limit the scope of the present disclosure in any way. In some embodiments, environment 100 may include additional terminal devices for communicating information with additional network devices.

[0048] Communications in environment 100 may follow any suitable communications standards or protocols that already exist or will be developed in the future, such as Universal Mobile Telecommunications System (UMTS), Long Term Evolution (LTE), Advanced LTE (LTE-A), Fifth Generation (5G) New Radio (NR), Wireless Fidelity (Wi-Fi), and Worldwide Interoperability for Microwave Access (WiMAX) standards, and employ any suitable communications technology, including, for example, Multiple Input Multiple Output (MIMO), Orthogonal Frequency Division Multiplexing (OFDM), Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), Code Division Multiple Access (CDM), Bluetooth, ZigBee, Machine Type Communication (MTC), Enhanced Mobile Broadband (eMBB), Massive Machine Type Communication (mMTC), Ultra-Reliable Low Latency Communication (URLLC), Carrier Aggregation (CA), Dual Connectivity (DC), and New Radio Unlicensed (NR-U) technology.

[0049] Figure 2 FIG. 2 illustrates a signaling process 200 for UL data transmission with CLI management according to some embodiments of the present disclosure. For discussion purposes, reference will be made to Figure 1 Process 200 is described.

[0050] To initiate UL data transmission from the first terminal device 130 to the first network device 110, in some embodiments, the first network device 110 may send (210) to the first terminal device 130 an indication for pre-scheduling communication resources for a physical uplink shared channel (PUSCH) transmission from the first terminal device to the first network device. In some embodiments, the indication may be sent via downlink control information (DCI) in a physical downlink control channel (PDCCH), or a radio resource control (RRC) message.

[0051] In the signaling process 200, the first terminal device 130 determines (220) a first transmission direction associated with a communication resource to be used for data transmission. The terms "first transmission direction on a communication resource" and "first transmission direction associated with a communication resource" as used herein refer to a transmission direction having priority between a network device and a terminal device on a communication resource and can be used interchangeably.

[0052] In some embodiments, the first terminal device 130 may receive information about the first transmission direction matrix from the network device 110, and determine the first transmission direction on the communication resource based on the first transmission direction matrix. Each element in the first transmission direction matrix indicates the corresponding first transmission direction of the combined resource of at least one of the time domain resources, the frequency domain resources, and the spatial domain resources. For example, the first transmission direction may be defined or configured on a specific subband, and the first transmission direction may be included in the first direction vector. That is, each subband may correspond to a first transmission direction with UL priority or DL ​​priority. For example, a carrier may include N subbands, and a one-dimensional vector {DL, UL, ..., UL, DL} may be defined or configured, and each element represents the first transmission direction on the corresponding subband. Additionally or alternatively, the first transmission direction may be defined or configured on a specific subband and a specific time slot or time unit. In this case, the first transmission direction may indicate a transmission direction with a priority for data transmission on a combined resource of a specific subband and a specific time slot or time unit. Therefore, the first transmission direction may be included in the first transmission direction matrix as an element specified by two dimensions, the frequency domain dimension and the time domain dimension. For example, the first transmission direction matrix may include M rows and N columns. M represents the number of subbands in a carrier or bandwidth part (BWP), and N represents the number of time units in a duration or measurement period. The row index represents each subband index, and the column represents the time unit index (such as a time slot or k symbols). The element v(i,j) in the first transmission direction matrix represents the first transmission direction with DL / UL priority for subband (i) in time slot (j). Additionally or alternatively, the first transmission direction may be sent on a specific time slot, a specific subband, and a specific beam. In this case, the first transmission direction may indicate a transmission direction with priority for data transmission on a combined resource of a time slot, a specific subband, and a specific beam. Therefore, the first transmission direction may be included in the first transmission direction matrix as an element specified by three dimensions: a time domain dimension, a frequency domain dimension, and a spatial domain dimension.

[0053] In some examples, the first transmission direction matrix may be predefined. In some examples, the first transmission direction matrix may be exchanged between network devices via Xn / X2. In some examples, the first transmission direction matrix may be transmitted via an access and mobility management function (AMF). For example, the first network device 110 may receive the configuration of the first transmission direction matrix from the second network device 120 via the AMF. The first network device 110 may send the configuration of the first transmission direction matrix to the first terminal device 130 via a specific RRC message or a group common DCI.

[0054] In some embodiments, the first network device 110 may determine a first transmission direction on the communication resources based on the first transmission direction matrix, and send an indication of the first transmission direction on the communication resources to be used to the first terminal device 130 .

[0055] In some embodiments, if the first transmission direction on the communication resource to be used for data transmission is in the UL direction, i.e., the same transmission direction as the PUSCH transmission to be performed on the communication resource, the first terminal device 130 may send (240) a PUSCH to the first network device 110 on the communication resource. In some embodiments, in response to determining that the transmission direction is the same as the first transmission direction on the communication resource, the first network device 110 may send (230) a reference signal on the communication resource before receiving the PUSCH to notify other network devices (e.g., the second network device 120) of the occupancy of the communication resource. The reference signal may have the same QCL assumption as the data to be transmitted. In addition, the reference signal may carry information about the duration of the transmission. With this information, other nodes that receive the reference signal will know the duration of the occupancy of the communication resource and will not detect the reference signal again during this period.

[0056] In some embodiments, if the first transmission direction on the communication resource to be used for data transmission is in the DL direction, that is, opposite to the transmission direction of the PUSCH transmission to be performed on the communication resource, the first terminal device 130 may determine the CLI between the first terminal device 130 and other terminal devices (e.g., the second terminal device 140 or the third terminal device 150) on the communication resource to determine whether the communication resource is already occupied. In some embodiments, the first terminal device 130 may detect energy of the communication resource from the other terminal devices, and determine the CLI based on the detected energy of the communication resource. Alternatively or additionally, the first terminal device 130 may sense a reference signal from the other terminal devices on the communication resource, and determine the CLI based on the result of the sensing.

[0057] In some embodiments, the first terminal device 130 may send an indication to the first network device 110 regarding whether a CLI exists on a communication resource or how many CLIs there are based on the determined CLI. In some embodiments, the first terminal device 130 may implicitly send the indication to the first network device 110 via an acknowledgement / negative acknowledgement (ACK / NACK). If the first network device 110 receives a NACK indication, the first network device 110 is notified that the CLI exists or will exist. If the first network device 110 receives an ACK indication, the first network device 110 is notified that the CLI is below a threshold and that a PUSCH will be sent on the communication resource. In some embodiments, the first terminal device 130 may explicitly send the indication to the first network device 110 via a MAC control element (MAC CE) on a communication resource different from the communication resource.

[0058] In some embodiments, if the CLI is within the predefined conditions, the first terminal device 130 may send (240) a PUSCH to the first network device 110 on the communication resource. In some embodiments, if the CLI exceeds the predefined conditions, the first terminal device 130 may abandon the PUSCH transmission. Alternatively, the first terminal device 130 may perform power backoff, i.e., send the PUSCH at a lower power. Alternatively, the PUSCH may be sent from the first terminal device 130 to the first network device 110 on a communication resource different from the communication resource.

[0059] In an alternative implementation, the first terminal device 130 may perform a channel access procedure before sending the PUSCH to the first network device 110. Parameters of the channel access procedure, such as a clear channel assessment (CCA) type, a contention window, or a delay period, may be determined.

[0060] In some embodiments, two parameter sets of the channel access process may be predefined or configured and correspond to the relationship between the transmission direction of the data transmission to be performed and the first transmission direction associated with the communication resource. The first parameter set of the channel access process corresponds to the situation where the transmission direction of the data transmission to be performed is opposite to the first transmission direction associated with the communication resource. The first parameter set of the channel access process includes first monitoring information indicating the first monitoring duration of the channel access process. The second parameter set of the channel access process corresponds to the situation where the transmission direction of the data transmission to be performed is the same as the first transmission direction associated with the communication resource. The second parameter set of the channel access process includes second monitoring information indicating the second monitoring duration of the channel access process. The first monitoring duration is longer than the second monitoring duration. The first terminal device 130 may receive a command from the first network device 110, the command including a first part for pre-scheduling the communication resource for the data transmission between the first terminal device 130 and the first network device 110 and a second part for defining a parameter set for the channel access process. The first terminal device 130 may perform a channel access process on the communication resource based on the corresponding parameter set. If the channel on the communication resource is idle according to the channel access process, the first terminal device 130 then performs data transmission on the communication resource. In some embodiments, the channel access procedure may be a listen-before-talk (LBT) procedure or a clear channel assessment (CCA) procedure.

[0061] In one embodiment, if the transmission direction with priority on the communication resource is in the DL transmission direction, the listening duration of DL data transmission may be shorter than the listening duration of UL data transmission. In this case, the first terminal device 130 needs to perform a channel access process for a longer period of time before sending the PUSCH, thereby reducing the probability of performing DL data transmission on the communication resource.

[0062] The terms "reference signal on a communication resource" and "reference signal associated with a communication resource" used herein indicate that the reference signal is resource-specific and can be used interchangeably. Each resource unit (such as a subband / RB set / beam) is associated with a certain reference signal sequence. The reference signal on the communication resource corresponds to a predefined sequence that is orthogonal to another predefined sequence that corresponds to another reference signal on another communication resource different from the communication resource. In some embodiments, the reference signal may refer to a reference signal for CLI reference signal received power (RSRP) measurement, or a reference signal sent to occupy a communication resource. The reference signal configuration is implicitly acquired by the RB / subband and symbol index allocated for PUSCH / PDSCH. For example, as shown in the figure, the base sequence index is determined based on the subband index or the RB set index, and the cyclic shift index is determined based on the OFDM symbol index. For data PDSCH / PUSCH decoding, the entire demodulation reference signal (DMRS) of the UE can be obtained by aggregating one or more short demodulation reference signals corresponding to different resource units. Once each short demodulation reference signal is designed to be orthogonal, the orthogonality of the entire DMRS can be obtained. Alternatively, if the Zadoff-Chu sequence is used as the base sequence, the first symbol of the PDSCH / PUSCH DMRS can use a cyclic shift value of 0, and the next DMRS can use a cyclic shift value of 1, and so on. Alternatively, a layer index can be added to the cyclic shift generation, and different cells use different layers. In addition, the sequence can also carry cell identification information, through which other nodes can know the attacker cell through blind detection.

[0063] Figure 3A An example of a first time slot configuration 300A according to some embodiments of the present disclosure is illustrated. For discussion purposes, reference will be made to Figure 1 A first time slot configuration 300A is described.

[0064] The first time slot configuration 300A corresponds to an embodiment in which communication resources are scheduled for PUSCH transmission from the first terminal device 130 to the first network device 110 and the first transmission direction on the communication resources is in the UL direction. As shown in the figure, the first time slot configuration 300A includes a first part for PDCCH, a second part for reference signal (RS), a third part for protection period (GP) and a fourth part for PUSCH transmission from the terminal device. Specifically, the symbol at the beginning of the time slot can be used to send PDCCH from the first network device 110 to the first terminal device 130, and the last symbol of the time slot can be used to send PUSCH from the first terminal device 130 to the first network device 110, and GP is defined for DL-UL switching. RS is sent by the first network device 110 in the symbol between PDCCH and PUSCH, and is used to notify other network devices of the occupancy of communication resources.

[0065] Figure 3B An example of a second time slot configuration 300B according to some embodiments of the present disclosure is illustrated. For discussion purposes, reference will be made to Figure 1 A second time slot configuration 300B is described.

[0066] The second time slot configuration 300B corresponds to an embodiment in which a communication resource is scheduled for a PUSCH transmission from the first terminal device 130 to the first network device 110 and the first transmission direction on the communication resource is in the DL direction. As shown, the first time slot configuration 300B includes a first part for PDCCH, a second part for RS, and a third part for PUSCH transmission from the terminal device. Specifically, during the GP, the first terminal device 130 can determine the CLI on the communication resource by detecting the energy of the communication resource or sensing the reference signal on the communication resource.

[0067] Figure 3C An example of a third time slot configuration 300C according to some embodiments of the present disclosure is illustrated. For discussion purposes, reference will be made to Figure 1 A third time slot configuration 300C is described.

[0068] The third time slot configuration 300C corresponds to the following embodiment: wherein the first network device 110 can send an indication to the first terminal device 130 for pre-scheduling multiple communication resources for multiple PUSCH transmissions (e.g., PUSCH-1 to PUSCH-5) from the first terminal device 130 to the first network device 110, which carry the same or different transmission blocks respectively. A corresponding first transmission direction is determined for each of the multiple communication resources. For example, the first communication resource for scheduling PUSCH-1 and the third communication resource for scheduling PUSCH-3 are in the DL direction, while the communication resources for scheduling PUSCH-2, PUSCH-4, and PUSCH-5 are in the UL direction. The first terminal device 130 can use a first transmission power to send PUSCH-1 and PUSCH-3, and use a second transmission power greater than the first transmission power to send PUSCH-2, PUSCH-4, and PUSCH-5.

[0069] In some examples, the indication may include two sets of transmission power control (TPC) parameters corresponding to the first transmission power and the second transmission power, respectively. In some examples, two sets of TPC parameters or P0-PUSCH-AlphaSet IDs may be included in the DCI for scheduling PUSCH or in the IE ConfiguredGrantConfig.

[0070] Alternatively, energy detection or RS sensing may be performed on a communication resource corresponding to the PUSCH (particularly a communication resource whose first transmission direction is opposite to the PUSCH transmission direction). The first terminal device 130 may send a PUSCH on a corresponding communication resource with a heavy CLI using a first transmission power, and send a PUSCH on a corresponding communication resource without a CLI using a second transmission power greater than the first transmission power.

[0071] Figure 4 An example environment 400 is illustrated in which some embodiments of the present disclosure may be implemented.

[0072] Environment 400 (which may be part of a communication network) includes a first network device 410, a second network device 420, a first terminal device 430, and a second terminal device 440. Terminal device 430 and second terminal device 440 may operate in a duplex communication mode. For example, in some cases, first terminal device 430 may simultaneously receive downlink data transmissions from first network device 430 and uplink data transmissions from second terminal device 440. Additionally or alternatively, environment 400 may further include a third terminal device 450. In some cases, first terminal device 430 may simultaneously receive downlink data transmissions from first network device 430 and uplink data transmissions from third terminal device 450.

[0073] Figure 5 FIG. 5 illustrates a signaling process 500 for data transmission with CLI management according to some embodiments of the present disclosure. For the purpose of discussion, reference will be made to Figure 4 Process 500 is described.

[0074] To initiate DL data transmission from the first network device 410 to the first terminal device 430, in some embodiments, the first network device 410 may send (510) to the first terminal device 430 an indication for pre-scheduling communication resources for a physical downlink shared channel (PDSCH) transmission from the first network device to the first terminal device. In some embodiments, the indication may be sent via a DCI or RRC message in a PDCCH.

[0075] In the signaling process 500, the first network device 410 determines (520) a first transmission direction associated with a communication resource to be used for data transmission. In some embodiments, if the first transmission direction on the communication resource to be used for data transmission is in the DL direction, i.e., the same as the transmission direction of the PDSCH transmission to be performed on the communication resource, the first network device 410 may send (550) a PDSCH to the first terminal device 430 on the communication resource. In some embodiments, the first terminal device 430 may determine (530) that the transmission direction is the same as the first transmission direction on the communication resource, and send (540) a reference signal on the communication resource before receiving the PDSCH to notify other terminal devices (e.g., the second terminal device 440 and the fifth terminal device 450) of the occupation of the communication resource. The reference signal on the communication resource corresponds to a predefined sequence, which is orthogonal to another predefined sequence, which corresponds to another reference signal on another communication resource different from the communication resource. The sequence may also carry cell identification information, by which other nodes may know the attacker cell by blind detection.

[0076] It should be noted that although step 520 is shown after step 510 in the figure, the present disclosure is not limited thereto. It should be understood that step 520 may also be performed before or concurrently with step 510. The embodiments of the signaling process in the present disclosure are only examples and are not intended to be limiting.

[0077] In some embodiments, if the first transmission direction on the communication resource to be used for data transmission is in the UL direction, that is, opposite to the transmission direction of the PDSCH transmission to be performed on the communication resource, the first network device 410 may determine the CLI between the first network device 410 and other network devices (e.g., the second network device 420) on the communication resource to determine whether the communication resource is already occupied. In some embodiments, the first network device 410 may send an indication to the first terminal device 430 regarding whether there is a CLI on the communication resource or how many CLIs there are based on the determined CLI. In some embodiments, the first network device 410 may implicitly send the indication to the first terminal device 430 via an ACK / NACK (ACK / NACK) or a MAC control element (MAC CE) on a communication resource different from the communication resource.

[0078] In some embodiments, if the CLI is within the predefined conditions, the first network device 410 may send (550) a PDSCH on the communication resource to the first terminal device 430. In some embodiments, if the CLI exceeds the predefined conditions, the first network device 410 may abandon the PDSCH transmission, or perform power backoff, or send the PDSCH on a communication resource different from the communication resource.

[0079] Fig. 6A An example of a fourth time slot configuration 600A according to some embodiments of the present disclosure is illustrated. For discussion purposes, reference will be made to Figure 5 A fourth time slot configuration 600A is described.

[0080] The fourth time slot configuration 600A corresponds to an embodiment in which communication resources are scheduled for PDSCH transmission from the first network device 410 to the first terminal device 430 and the first transmission direction on the communication resources is in the DL direction. As shown, the fourth time slot configuration 600A includes a first part for PDCCH, a second part for a guard period (GP), a third part for a reference signal (RS), a fourth part for a guard period (GP), and a fifth part for PDSCH transmission. RS is sent by the first terminal device 430 in a symbol between PDCCH and PDSCH, and is used to notify other network devices of the occupancy of communication resources.

[0081] Figure 6B An example of a fifth time slot configuration 600B according to some embodiments of the present disclosure is illustrated. For discussion purposes, reference will be made to Figure 5 A fifth time slot configuration 600B is described.

[0082] The fifth time slot configuration 600B corresponds to an embodiment in which a communication resource is scheduled for a PDSCH transmission from the first network device 410 to the first terminal device 430 and the first transmission direction on the communication resource is in the UL direction. As shown, the first time slot configuration 300B includes a first part for PDCCH, a second part for RS, and a third part for PDSCH transmission from the terminal device. Specifically, during the GP, the first network device 410 can determine the CLI on the communication resource by detecting the energy of the communication resource or sensing the reference signal on the communication resource.

[0083] In an alternative implementation, the first network device 410 may perform a channel access procedure before sending the PDSCH to the first terminal device 430. In some embodiments, the first parameter set and the second parameter set of the channel access procedure may be predefined or configured. The first parameter set of the channel access procedure corresponds to the case where the transmission direction of the data transmission to be performed is opposite to the first transmission direction associated with the communication resource. The first parameter set of the channel access procedure includes first monitoring information indicating the first monitoring duration of the channel access procedure. The second parameter set of the channel access procedure corresponds to the case where the transmission direction of the data transmission to be performed is the same as the first transmission direction associated with the communication resource. The second parameter set of the channel access procedure includes second monitoring information indicating the second monitoring duration of the channel access procedure. The first monitoring duration is longer than the second monitoring duration. The first network device 410 may perform a channel access procedure on the communication resource based on the corresponding parameter set. If the channel on the communication resource is idle according to the channel access procedure, the first network device 410 then performs data transmission on the communication resource. In some embodiments, the channel access procedure may be an LBT procedure or a CCA procedure.

[0084] As mentioned above, CLI can occur between different terminal devices or between different network devices operating in duplex communication mode. One solution for CLI management is for network devices to coordinate UL-DL transmission configurations with each other. For example, if a reference signal is used for DL ​​to UL interference or UL to DL interference measurement, the resource blocks used to send the reference signal on one link need to be blanked or muted on the other link to ensure the reliability of the CLI measurement. However, the spectrum efficiency will be affected. How to reduce the overhead of CLI measurement is also a problem that needs to be solved.

[0085] The exemplary embodiments of the present disclosure propose a mechanism for performing CLI measurement through a duplex reference signal. In this mechanism, orthogonal multiplexing of DL RS and UL RS for interference measurement is designed to avoid interference with each other. CLI measurement can be performed simultaneously with channel estimation or CQI / CSI measurement or other functions of other reference signals.

[0086] Figure 7 An example environment 700 is illustrated in which some embodiments of the present disclosure may be implemented.

[0087] Environment 700 (which may be part of a communication network) includes a first network device 710, a second network device 720, a first terminal device 730, and a second terminal device 740 operating in a duplex communication mode. For example, in some cases, the first network device 710 may simultaneously receive an uplink data transmission from the first terminal device 730 and a downlink data transmission from the second network device 720. Additionally or alternatively, the second terminal device 740 may simultaneously receive a downlink data transmission from the second network device 720 and an uplink data transmission from the first terminal device 730.

[0088] Figure 8 A signaling process 800 for data transmission with CLI management is illustrated according to some embodiments of the present disclosure.

[0089] In the signaling process 800, the first terminal device 730 sends (810) a first reference signal to the first network device 710 on the communication resource, and sends (820) the first reference signal to the second terminal device 740. The second network device 720 sends (830) a second reference signal to the first network device 710 on the communication resource, and sends (840) a second reference signal to the second terminal device 740. The first reference signal and the second reference signal are orthogonal. In some embodiments, the first reference signal and the second reference signal are orthogonal by frequency division multiplexing (FDM) or code division multiplexing (CDM). In some embodiments, the first reference signal may include identification information of the cell where the first terminal device 730 or the first network device 710 is located. The second reference signal may include identification information of the cell where the second terminal device 740 or the second network device 720 is located. In this way, duplex flexibility of the reference signal is achieved.

[0090] In some examples, the first reference signal may be a first DMRS for channel estimation for PUSCH decoding of PUSCH transmission from the first terminal device 730 to the first network device 710; and the second reference signal may be a second DMRS for channel estimation for PDSCH decoding of PDSCH transmission from the second network device 720 to the second terminal device 740.

[0091] In some embodiments, first network device 710 may perform (850) channel estimation for PUSCH decoding for PUSCH transmission from first terminal device 730 to first network device 710 based on the first DMRS, while performing measurement of CLI between first network device 710 and second network device 720 based on the second DMRS. In some embodiments, second terminal device 740 may perform (860) channel estimation for PDSCH decoding for PDSCH transmission from second terminal device 720 to second network device 740 based on the second DMRS, while performing measurement of CLI between first terminal device 730 and fourth terminal device 720 based on the first DMRS.

[0092] In this way, when PDSCH transmission and PUSCH transmission are performed on the same resources from different cells, the front-loaded DMRS for PUSCH decoding and PDSCH decoding can also be used as CLI measurement reference signals. In some embodiments, if it is assumed that the DMRS for PUSCH decoding and PDSCH decoding are designed in the same OFDM-based waveform (and digital technology), they need to be located in the same OFDM symbol and subcarrier.

[0093] In some embodiments, the first DMRS and the second DMRS are orthogonal and resource-specific, rather than UE-specific. In some embodiments, the first DMRS and the second DMRS can be designed with a resource block (RB) specific RS sequence with a cell-specific root or scrambling sequence. For example, the number of RBs of the DMRS can be half of the number of PUSCH / PDSCH RBs allocated, respectively. For example, the first DMRS can occupy an odd RB index, while the second DMRS can occupy an even RB index. In some embodiments, the scrambling identifier (ID) of an adjacent cell can be assumed or predefined as mod(cell ID+n). In some embodiments, the layers or ports of the first DMRS and the second DMRS can be predefined (such as operator 1, use 1), and can be different for overlapping time-frequency resources and each layer, and can have a specific orthogonal cover code.

[0094] In some examples, the first reference signal may be a first sounding reference signal (SRS) for uplink channel quality measurement between the first terminal device 730 and the first network device 710; and the second reference signal may be a second SRS for downlink channel quality measurement between the second network device 720 and the second terminal device 740.

[0095] In some embodiments, first network device 710 may perform (850) uplink channel quality measurement between first terminal device 730 and first network device 710 based on the first SRS, and simultaneously perform measurement of CLI between first network device 710 and second network device 720 based on the second SRS. In some embodiments, second terminal device 740 may perform (860) downlink channel quality measurement between second network device 720 and second terminal device 740 based on the second SRS, and simultaneously perform measurement of CLI between first terminal device 730 and fourth terminal device 720 based on the first SRS.

[0096] Both the first SRS and the second SRS are resource specific and orthogonalized by FDM / CDM, so the first SRS and the second SRS can be distinguished. In this way, CLI measurement and CQI / CSI measurement can be performed simultaneously. In an embodiment using the FDM method, different frequency offsets or different subband / RB sets / combs are used. In an embodiment using the CDM method, different sequences are used. In some embodiments, different cells can use different antenna ports, and due to different cyclic shifts, the first SRS and the second SRS can be orthogonal.

[0097] In some embodiments, for the case where the first network device and the second network device belong to the same operator, the SRS resource configuration can be exchanged between the two TRPs. For the case where the first network device and the second network device belong to different operators, the SRS resources can be divided first, and each operator uses predefined resources. For example, during the duration t1, comb k=4 or comb=8 is used, and operator 1 or cell 1 uses comb #1, while operator 2 or cell 2 uses comb #2, and so on. Alternatively, during the duration T1, port 1 and port 2 can be assigned to cell 1, and port 3 and port 4 can be assigned to cell 2; during the duration T2, port 1 and port 2 can be assigned to cell 2, and port 3 and port 4 can be assigned to cell 1.

[0098] In some examples, the first reference signal can be a first channel state information reference signal (CSI-RS) for uplink channel quality measurement between the first terminal device 730 and the first network device 710; and a second CSI-RS for downlink channel quality measurement between the second network device 720 and the second terminal device 740.

[0099] In some embodiments, the first network device 710 may perform (850) uplink channel quality measurement between the first terminal device 730 and the first network device 710 based on the first CSI-RS, while performing measurement of CLI between the first network device 710 and the second network device 720 based on the second CSI-RS. In some embodiments, the second terminal device 740 may perform (860) downlink channel quality measurement between the second network device 720 and the second terminal device 740 based on the second CSI-RS, while performing measurement of CLI between the first terminal device 730 and the fourth terminal device 720 based on the first CSI-RS.

[0100] The first CSI-RS and the second CSI-RS are cell-specific and orthogonal by FDM / CDM. The cell ID can be included in the scrambling ID for sequence initialization. That is, the CSI-RS sequence is scrambled with a cell-specific ID and the maximum possible system bandwidth is assumed. In some embodiments, the middle of the sequence can always be aligned with the center of the bandwidth, and only the sequence elements in the resource allocation region are active.

[0101] In some examples, the first CSI-RS and the second CSI-RS may use different frequency domain orthogonal cover codes (OCC) or different time domain OCC. In some examples, M RS ports out of a total of N RS ports may be allocated to the first RS, and the remaining (NM) RS ports may be allocated to the second RS. When duplex flexibility is not enabled, all N RS ports may be allocated to both the first RS in the UL channel and the second RS in the DL channel.

[0102] Fig. 9A An example of a sixth time slot configuration according to some embodiments of the present disclosure is illustrated. For discussion purposes, reference will be made to Figure 7 and Figure 8 describe Fig. 9A Description.

[0103] As shown in the figure, the time slot configuration can indicate a first structure 910 for a UL channel between a first terminal device 730 and a first network device 710, which includes DL symbols, UL symbols, UL RS symbols and flexible symbols; and a second structure 920 for a DL channel between a second network device 720 and a second terminal device 740, which includes DL symbols, UL symbols, DL RS symbols and flexible symbols.

[0104] When considering CLI measurement between terminal devices and CLI measurement between network devices at the same time, orthogonal design between UL RS and DL RS may be considered to ensure accuracy. It should be understood that UL RS and DL RS may be other RSs besides DMRS, CSI-RS and SRS.

[0105] In some embodiments, DL RS and UL RS are sent in overlapping time-frequency resources, but are orthogonal in RE / RB level FDM. In some embodiments, DL RS and UL RS are covered by different OCCs. In some embodiments, DL RS and UL RS correspond to orthogonal sequences. In this way, CLI measurements between terminal devices and CLI measurements between network devices can be performed simultaneously on the same resources.

[0106] Fig. 9B An example of a seventh time slot configuration according to some embodiments of the present disclosure is illustrated. For discussion purposes, reference will be made to Figure 7 and Figure 8 describe Fig. 9B Description.

[0107] As shown, the time slot configuration may indicate a structure 930 for a UL channel between the first terminal device 730 and the first network device 710 and for a DL channel between the second network device 720 and the second terminal device 740, the structure including DL symbols, UL symbols, RS symbols, and flexible symbols.

[0108] In some embodiments, the DL RS and UL RS for CLI measurement may be transmitted in separate beam directions.

[0109] Fig.10 A flowchart of an example method 1000 implemented at a first terminal device according to some embodiments of the present disclosure is illustrated. The method 1000 may be implemented at a first terminal device according to some embodiments of the present disclosure. Figure 1 The first terminal device 130 and Figure 4 For the purpose of discussion, reference will be made to Figure 1 1000 is described. It should be understood that the method 1000 may include additional actions not shown and / or may omit some of the actions shown, and the scope of the present disclosure is not limited in this regard.

[0110] At block 1010 , the first terminal device 130 determines a first transmission direction associated with a communication resource.

[0111] At block 1020 , the first terminal device 130 performs data transmission on the communication resource in accordance with determining that the transmission direction of the data transmission between the first terminal device 130 and the first network device 110 to be performed on the communication resource is the same as the first transmission direction.

[0112] In some embodiments, the first terminal device 130 receives information about a first transmission direction matrix from the first network device 110, each element in the first transmission direction matrix indicates a corresponding first transmission direction of a combination resource of at least one of a time domain resource, a frequency domain resource, and a spatial domain resource. The first terminal device 130 determines a first transmission direction associated with a communication resource based on the first transmission direction matrix.

[0113] In some embodiments, the data transmission to be performed on the communication resources is a Physical Uplink Shared Channel (PUSCH) transmission from the first terminal device 130 to the first network device 110 on the communication resources.

[0114] In some embodiments, the first terminal device 130 determines a cross link interference (CLI) between the first terminal device 130 and the second terminal device 140 on the communication resource based on determining that the transmission direction of the PUSCH transmission to be performed on the communication resource is opposite to the first transmission direction. The first terminal device 130 performs a PUSCH transmission on the communication resource based on determining that the CLI is within the predefined conditions.

[0115] In some embodiments, based on determining that the CLI exceeds a predefined condition, the first terminal device 130 may abandon PUSCH transmission, or perform power backoff, or perform PUSCH transmission on a communication resource different from the communication resource.

[0116] In some embodiments, the first terminal device 130 sends an indication to the first network device 110 regarding whether a CLI exists on the communication resource based on the determined CLI.

[0117] In some embodiments, the data transmission to be performed on the communication resource is a physical downlink shared channel (PDSCH) transmission on the communication resource from the first network device 110 to the first terminal device 130. The first terminal device 130 sends a reference signal on the communication resource before performing the PDSCH transmission based on determining that the transmission direction of the PDSCH transmission to be performed on the communication resource is the same as the first transmission direction; and then performs the PDSCH transmission on the communication resource.

[0118] In some embodiments, the data transmission to be performed on the communication resource is a physical uplink shared channel (PUSCH) transmission on the communication resource from the first terminal device 130 to the first network device 110. The first terminal device 130 detects a reference signal on the communication resource before sending the PUSCH based on determining that the transmission direction of the PUSCH transmission to be performed on the communication resource is opposite to the first transmission direction; and then performs the PUSCH transmission on the communication resource.

[0119] In some embodiments, the reference signal on the communication resource corresponds to a predefined sequence that is orthogonal to a further predefined sequence that corresponds to a further reference signal on a further communication resource different from the communication resource.

[0120] In some embodiments, the predefined sequence includes identification information of the cell where the first terminal device 130 is located.

[0121] Fig.11 A flowchart of an example method 1100 implemented at a first terminal device according to some embodiments of the present disclosure is illustrated. The method 1100 may be implemented at a first terminal device according to some embodiments of the present disclosure. Figure 1 For the purpose of discussion, reference will be made to Figure 1 1100. It should be understood that the method 1100 may include additional actions not shown and / or may omit some of the actions shown, and the scope of the present disclosure is not limited in this regard.

[0122] At box 1110, the first terminal device 130 receives from the first network device 110 an indication of scheduling a first communication resource for a first data transmission from the first terminal device 130 to the first network device 110 and scheduling a second communication resource for a second data transmission from the first terminal device 130 to the first network device 110. It should be understood that the "second transmission direction" used here is a transmission direction with priority on the second communication resource. As used in this article, the expression "second" is only used to distinguish from the "first" transmission direction. The first transmission direction and the second transmission direction here actually represent the transmission direction with priority on the first transmission resource and the transmission direction with priority on the second transmission resource, respectively.

[0123] At block 1120 , the first terminal device 130 determines a first transmission direction associated with the first communication resource and a second transmission direction associated with the second communication resource.

[0124] At block 1130 , the first terminal device 130 performs a first data transmission on the first communication resource and a second data transmission on the second communication resource using a first transmission power based on determining that the first transmission direction is opposite to the transmission direction and the second transmission direction is the same as the transmission direction.

[0125] In some embodiments, the indication includes two sets of transmit power control (TPC) parameters corresponding to the first transmit power and the second transmit power, respectively.

[0126] Fig.12 A flowchart of an example method 1200 implemented at a first terminal device according to some embodiments of the present disclosure is illustrated. The method 1200 may be implemented at a first terminal device according to some embodiments of the present disclosure. Figure 1 The first terminal device 130 and Figure 4 For the purpose of discussion, reference will be made to Figure 1 1200. It should be understood that the method 1200 may include additional actions not shown and / or may omit some of the actions shown, and the scope of the present disclosure is not limited in this regard.

[0127] In block 1210 , the first terminal device 130 receives a command from the first network device 110 , the command comprising a first part for pre-scheduling communication resources for data transmission between the first terminal device 130 and the first network device 110 and a second part for defining a set of parameters for a channel access procedure.

[0128] At block 1220 , the first terminal device 130 performs a channel access procedure on the communication resource based on the set of parameters.

[0129] At block 1230, the first terminal device 130 performs data transmission on the communication resource based on determining that the channel on the communication resource is idle. The parameter set of the channel access procedure corresponds to a relationship between a transmission direction of the data transmission to be performed and a first transmission direction associated with the communication resource.

[0130] In some embodiments, if the transmission direction of the data transmission to be performed is opposite to the first transmission direction associated with the communication resource, the parameter set includes first listening information indicating a first listening duration of the channel access procedure.

[0131] In some embodiments, if the transmission direction of the data transmission to be performed is the same as the first transmission direction associated with the communication resource, the parameter set includes second listening information indicating a second listening duration of the channel access procedure. The first listening duration is longer than the second listening duration.

[0132] Fig.13 A flowchart of an example method 1300 implemented at a first terminal device according to some embodiments of the present disclosure is illustrated. The method 1700 may be implemented at Figure 1 The second terminal device 740 is implemented as shown. For the purpose of discussion, reference will be made to Figure 7 1300. It should be understood that the method 1300 may include additional actions not shown and / or may omit some of the actions shown, and the scope of the present disclosure is not limited in this regard.

[0133] At block 1310 , terminal device 740 receives a first reference signal from a first network device on a communication resource.

[0134] At block 1320, the terminal device 740 receives a second reference signal from another terminal device 730 on a communication resource for cross-link interference (CLI) measurement between the first terminal device and the second terminal device. The first reference signal and the second reference signal are orthogonal.

[0135] In some embodiments, the first reference signal includes identification information of a cell where the first terminal device is located; and the second reference signal includes identification information of a cell where the second terminal device is located.

[0136] Fig.14 Illustrated is a flow diagram of an example method 1400 implemented at a first network device according to some embodiments of the present disclosure.

[0137] Method 1400 can be Figure 1 The first network device 110 and Figure 4 The first network device 410 is shown as being implemented. For the purpose of discussion, reference will be made to Figure 1 1400. It should be understood that the method 1400 may include additional actions not shown and / or may omit some of the actions shown, and the scope of the present disclosure is not limited in this regard.

[0138] At block 1410 , the first network device 110 determines a first transmission direction associated with a communication resource.

[0139] In block 1420 , the first network device 110 performs data transmission on the communication resource according to determining that the transmission direction of the data transmission between the first network device 110 and the first terminal device 130 to be performed on the communication resource is the same as the first transmission direction.

[0140] In some embodiments, the data transmission to be performed on the communication resource is a physical uplink shared channel (PUSCH) transmission on the communication resource from the first terminal device to the first network device 110. The first network device 110 sends a reference signal to the second network device 120 on the communication resource based on determining that the transmission direction of the PUSCH transmission to be performed on the communication resource is the same as the first transmission direction.

[0141] In some embodiments, the reference signal on the communication resource corresponds to a predefined sequence, the predefined sequence being orthogonal to a further predefined sequence corresponding to a further reference signal on a further communication resource different from the communication resource.

[0142] In some embodiments, the predefined sequence includes identification information of a cell where the first network device 110 is located.

[0143] Fig.15is a simplified block diagram of a device 1500 suitable for implementing some embodiments of the present disclosure. The device 1500 can be viewed as Figure 1 The terminal devices 130, 140, 150 shown in FIG. Figure 4 The terminal devices 430, 440, 450 shown in FIG. Figure 7 The terminal devices 730 and 740 shown, or Figure 1 The network devices 110, 120 shown in FIG. Figure 4 The network devices 410, 420 shown in FIG. Figure 7 Further example embodiments of the network devices 710, 720 are shown. Therefore, the device 1500 may be implemented at the above-mentioned network device or terminal device, or at least implemented as a part thereof.

[0144] As shown, the device 1500 includes a processor 1510, a memory 1520 coupled to the processor 1510, a suitable transmitter (TX) and receiver (RX) 1540 coupled to the processor 1510, and a communication interface coupled to the TX / RX 1540. The memory 1520 stores at least a portion of the program 1530. The TX / RX 1540 is used for bidirectional communication. The TX / RX 1140 has at least one antenna to facilitate communication, but in fact, there may be multiple access nodes mentioned in this application. 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.

[0145] Assume that program 1530 includes program instructions that, when executed by associated processor 1510, cause device 1500 to operate in accordance with embodiments of the present disclosure, as referred to herein. Figure 1-Figure 14 The embodiments herein may be implemented by computer software executable by a processor 1510 of the device 1500, or by hardware, or by a combination of software and hardware. The processor 1510 may be configured to implement various embodiments of the present disclosure. In addition, the combination of the processor 1510 and the memory 1520 may form a processing component 1550 suitable for implementing various embodiments of the present disclosure.

[0146] Memory 1520 may be of any type suitable for a local technology network and may be implemented using any suitable data storage technology, such as, as non-limiting examples, 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 1520 is shown in device 1500, there may be several physically distinct memory modules in device 1500. Processor 1510 may be of any type suitable for a local technology network and, as non-limiting examples, may include 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 1500 may have multiple processors, such as dedicated integrated circuit chips that are time-slave to a clock synchronized with a main processor.

[0147] In some embodiments, the terminal device includes a circuit system configured to perform methods 1000-1300.

[0148] In some embodiments, a network device includes circuitry configured to perform method 1400 .

[0149] The components included in the apparatus and / or device of the present disclosure may be implemented in various ways, including software, hardware, firmware, or any combination thereof. In one embodiment, one or more units may be implemented using software and / or firmware, for example, machine executable instructions 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 may 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 may be used include field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chip (SOCs), complex programmable logic devices (CPLDs), and the like.

[0150] Generally, various embodiments of the present disclosure may be implemented using hardware or dedicated circuits, software, logic, or any combination thereof. Some aspects may be implemented using hardware, while other aspects may be implemented using firmware or software that 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 representations, it should be understood that, as non-limiting examples, the blocks, devices, systems, techniques, terminal devices, or methods described herein may be implemented using hardware, software, firmware, dedicated circuits or logic, general-purpose hardware or controllers or other computing devices, or some combination thereof.

[0151] 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 instructions included in a program module, which are executed in a device on a target real or virtual processor to perform the above-mentioned reference Figures 3 to Fig.11 In general, a program module includes a routine, program, library, object, class, component, data structure, etc. that performs a specific task or implements a specific abstract data type. In various embodiments, the functions of the program modules can be combined or split between program modules as needed. The machine executable instructions of the program modules can be executed in local or distributed devices. In distributed devices, program modules can be located in both local and remote storage media.

[0152] 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 causes the function / operation specified in the flow chart and / or block diagram to be realized when executed by the processor or controller. The program code can be executed completely on the machine, partially on the machine, as an independent software package, partially on the machine and partially on a remote machine, or completely on a remote machine or server.

[0153] The above program code can be embodied in a machine-readable medium, which can be any tangible medium that can contain or store a program for use by an instruction execution system, device or equipment or used in combination with it. 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, electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium will include an electrical connection with one or more wires, a portable computer floppy 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 disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0154] In addition, although the operations are described in a particular order, this should not be understood as requiring such operations to be performed in the particular order shown or in order or performing all the operations shown to obtain the desired result. In some cases, multitasking and parallel processing may be advantageous. Similarly, although several specific embodiment details are included in the above discussion, these should not be interpreted as limitations on the scope of the present disclosure, but rather as descriptions of features that may be specific to a particular embodiment. Certain features described in the context of a separate embodiment may also be implemented in combination in a single embodiment. On the contrary, the various features described in the context of a single embodiment may also be implemented in multiple embodiments individually or in any suitable sub-combination.

[0155] The embodiment can also be implemented in the following aspects.

[0156] In a first aspect, a communication method implemented at a first terminal device is provided. The communication method includes: determining a first transmission direction associated with a communication resource; and performing data transmission on the communication resource according to determining that the transmission direction of data transmission between the first terminal device and a first network device to be performed on the communication resource is the same as the first transmission direction.

[0157] In some examples, the method also includes: receiving information about a first transmission direction matrix from a first network device, each element in the first transmission direction matrix indicating a corresponding first transmission direction of a combination of at least one of time domain resources, frequency domain resources, and spatial domain resources; wherein determining the first transmission direction includes: determining the first transmission direction associated with the communication resource based on the first transmission direction matrix.

[0158] In some examples, the data transmission to be performed on the communication resource is a physical uplink shared channel (PUSCH) transmission from the first terminal device to the first network device on the communication resource. The method also includes: determining a cross link interference (CLI) between the first terminal device and the second terminal device on the communication resource based on determining that the transmission direction of the PUSCH transmission to be performed on the communication resource is opposite to the first transmission direction; and performing the PUSCH transmission on the communication resource based on determining that the CLI is within the predefined condition.

[0159] In some examples, the method further includes: based on determining that the CLI exceeds a predefined condition, one of: abandoning PUSCH transmission; performing power backoff; and performing PUSCH transmission on a communication resource different from the communication resource.

[0160] In some examples, the method further includes sending an indication to the first network device regarding whether a CLI exists on the communication resource based on the determined CLI.

[0161] In some examples, sending the indication includes sending the indication to the first network device via an acknowledgement / negative acknowledgement (ACK / NACK) or a MAC control element (MAC CE) on a communication resource different from the communication resource.

[0162] In some examples, the method further includes: performing PUSCH transmission on the communication resource based on determining that a transmission direction of the PUSCH transmission to be performed on the communication resource is the same as the first transmission direction.

[0163] In some examples, determining the CLI includes: detecting an energy of the communication resource; and determining the CLI based on the detected energy of the communication resource.

[0164] In some examples, determining the CLI includes: sensing a reference signal from a second terminal device on a communication resource; and determining the CLI based on a result of the sensing.

[0165] In some examples, the data transmission to be performed on the communication resource is a physical downlink shared channel (PDSCH) transmission from the first network device to the first terminal device on the communication resource. Performing the data transmission on the communication resource includes: sending a reference signal on the communication resource before performing the PDSCH transmission based on determining that the transmission direction of the PDSCH transmission to be performed on the communication resource is the same as the first transmission direction; and performing the PDSCH transmission on the communication resource.

[0166] In some examples, the reference signal on the communication resource corresponds to a predefined sequence, the predefined sequence being orthogonal to another predefined sequence corresponding to another reference signal on another communication resource different from the communication resource.

[0167] In some examples, the predefined sequence includes identification information of a cell in which the first terminal device is located.

[0168] In a second aspect, a communication method implemented at a first terminal device is provided. The communication method includes: receiving from a first network device an indication for scheduling a first communication resource for a first data transmission from the first terminal device to the first network device and scheduling a second communication resource for a second data transmission from the first terminal device to the first network device; determining a first transmission direction associated with the first communication resource and a second transmission direction associated with the second communication resource; performing a first data transmission on the first communication resource using a first transmission power based on determining that the first transmission direction is opposite to the transmission direction from the first terminal device to the first network device; and performing a second data transmission on the second communication resource using a second transmission power greater than the first transmission power based on determining that the second transmission direction is the same as the transmission direction from the first terminal device to the first network device.

[0169] In some examples, the indication includes two sets of transmit power control (TPC) parameters corresponding to the first transmission power and the second transmission power, respectively.

[0170] In a third aspect, a communication method implemented at a first terminal device is provided. The communication method comprises: receiving a command from a first network device, the command comprising a first part for pre-scheduling a communication resource for data transmission between the first terminal device and the first network device and a second part for defining a parameter set for a channel access procedure; performing a channel access procedure on the communication resource based on the parameter set; and performing data transmission on the communication resource based on determining that a channel on the communication resource is idle; wherein the parameter set of the channel access procedure corresponds to a relationship between a transmission direction of the data transmission to be performed and a first transmission direction associated with the communication resource.

[0171] In some examples, if the transmission direction of the data transmission to be performed is opposite to the first transmission direction associated with the communication resource, the parameter set includes first listening information indicating a first listening duration of the channel access procedure.

[0172] In some examples, if the transmission direction of the data transmission to be performed is the same as the first transmission direction associated with the communication resource, the parameter set includes second listening information indicating a second listening duration of the channel access process, wherein the first listening duration is longer than the second listening duration.

[0173] In some examples, the channel access procedure is one of: a listen-before-talk (LBT) procedure; or a clear channel assessment (CCA) procedure.

[0174] In a fourth aspect, a communication method implemented at a first terminal device is provided. The communication method includes: receiving a first reference signal from a first network device on a communication resource; and receiving a second reference signal from a second terminal device on the communication resource for cross-link interference (CLI) measurement between the first terminal device and the second terminal device; wherein the first reference signal and the second reference signal are orthogonal.

[0175] In some examples, the first reference signal is a first demodulation reference signal (DMRS) for channel estimation of physical downlink shared channel (PDSCH) decoding for PDSCH transmission from a first network device to a first terminal device; and the second reference signal is a second DMRS for channel estimation of physical uplink shared channel (PUSCH) decoding for PUSCH transmission from a second terminal device to a second network device.

[0176] In some examples, the first reference signal is a first sounding reference signal (SRS) for downlink channel quality measurement between a first network device and a first terminal device; and the second reference signal is a second SRS for uplink channel quality measurement between a second terminal device and a second network device.

[0177] In some examples, the first reference signal is a channel state information reference signal (CSI-RS) for downlink channel quality measurement between a first network device and a first terminal device; and the second reference signal is a second CSI-RS for uplink channel quality measurement between a second terminal device and a second network device.

[0178] In some examples, the first reference signal includes identification information of a cell where the first terminal device is located; and the second reference signal includes identification information of a cell where the second terminal device is located.

[0179] In some examples, the first reference signal and the second reference signal are orthogonalized by frequency division multiplexing (FDM) or code division multiplexing (CDM).

[0180] In a fifth aspect, a communication method implemented at a first network device is provided. The communication method includes: determining a first transmission direction associated with a communication resource; and performing data transmission on the communication resource based on determining that the transmission direction of data transmission between the first network device and the first terminal device to be performed on the communication resource is the same as the first transmission direction.

[0181] In some examples, determining the first transmission direction includes: determining the first transmission direction associated with the communication resource based on a first transmission direction matrix, each element in the first transmission direction matrix indicating a corresponding first transmission direction of a combination resource of at least one of time domain resources, frequency domain resources, and spatial domain resources.

[0182] In some examples, the first transmission direction matrix is ​​predefined.

[0183] In some examples, the method further includes receiving a configuration of the first transmission direction matrix from a second network device via an access and mobility management function (AMF).

[0184] In some examples, the data transmission to be performed on the communication resource is a physical downlink shared channel (PDSCH) transmission on the communication resource from a first network device to a first terminal device; wherein the method further includes: determining a cross-link interference (CLI) between the first network device and the second network device on the communication resource based on determining that a transmission direction of the PDSCH transmission to be performed on the communication resource is opposite to the first transmission direction; and performing the PDSCH transmission on the communication resource based on determining that the CLI is within predefined conditions.

[0185] In some examples, the method further includes: based on determining that the CLI exceeds a predefined condition, one of: abandoning PDSCH transmission; performing power backoff; and performing PDSCH transmission on a communication resource different from the communication resource.

[0186] In some examples, the method further includes sending an indication to the first terminal device regarding whether a CLI exists on the communication resource based on the determined CLI.

[0187] In some examples, sending the indication includes sending the indication to the first terminal device via an acknowledgement / negative acknowledgement (ACK / NACK) or a MAC control element (MAC CE) on a communication resource different from the communication resource.

[0188] In some examples, the method further includes: performing PDSCH transmission on the communication resource based on determining that the transmission direction of the PDSCH transmission to be performed on the communication resource is the same as the first transmission direction.

[0189] In some examples, determining the CLI includes: detecting energy of a communication resource from the second network device; and determining the CLI based on the detected energy of the communication resource.

[0190] In some examples, determining the CLI includes: sensing a reference signal for CLI measurement from the second network device on the communication resource; and determining the CLI based on a result of the sensing.

[0191] In some examples, the data transmission to be performed on the communication resource is a physical uplink shared channel (PUSCH) transmission from the first terminal device to the first network device on the communication resource; wherein performing the data transmission on the communication resource includes: based on determining that the transmission direction of the PUSCH transmission to be performed on the communication resource is the same as the first transmission direction, sending a reference signal for CLI measurement on the communication resource before performing the PUSCH transmission; and performing the PUSCH transmission on the communication resource.

[0192] In some examples, the reference signal on the communication resource corresponds to a predefined sequence, the predefined sequence being orthogonal to another predefined sequence corresponding to another reference signal on another communication resource different from the communication resource.

[0193] In some examples, the predefined sequence includes identification information of a cell where the first network device is located.

[0194] In a sixth aspect, a communication method implemented at a first network device is provided. The communication method includes: determining a first transmission direction associated with a first communication resource and a second transmission direction associated with a second communication resource; and sending an indication to the first terminal device for scheduling the first communication resource for a first data transmission from the first terminal device to the first network device on the first communication resource using a first transmission power and scheduling the second communication resource for a second data transmission from the first terminal device to the first network device on the second communication resource using a second transmission power greater than the first transmission power, based on determining that the first transmission direction is opposite to the transmission direction from the first terminal device to the first network device and the second transmission direction is the same as the transmission direction from the first terminal device to the first network device.

[0195] In some examples, the indication includes two sets of transmit power control (TPC) parameters corresponding to the first transmission power and the second transmission power, respectively.

[0196] In a seventh aspect, a communication method implemented at a first network device is provided. The communication method includes: performing a channel access procedure on a communication resource based on a parameter set; and performing data transmission on the communication resource based on determining that the channel on the communication resource is idle; wherein the parameter set of the channel access procedure corresponds to a relationship between a transmission direction of the data transmission to be performed and a first transmission direction associated with the communication resource.

[0197] In some examples, if the transmission direction of the data transmission to be performed is opposite to the first transmission direction associated with the communication resource, the parameter set includes first listening information indicating a first listening duration of the channel access procedure.

[0198] In some examples, if the transmission direction of the data transmission to be performed is the same as the first transmission direction associated with the communication resource, the parameter set includes second listening information indicating a second listening duration of the channel access process, wherein the first listening duration is longer than the second listening duration.

[0199] In some examples, the channel access procedure is one of: a listen-before-talk (LBT) procedure; or a clear channel assessment (CCA) procedure.

[0200] In an eighth aspect, a communication method implemented at a first network device is provided. The communication method includes: receiving a first reference signal from a first terminal device on a communication resource; and receiving a second reference signal from a second network device on a communication resource for cross-link interference (CLI) measurement between the first network device and the second network device; wherein the first reference signal and the second reference signal are orthogonal.

[0201] In some examples, the first reference signal is a first demodulation reference signal (DMRS) for channel estimation for physical uplink shared channel (PUSCH) decoding of PUSCH transmission from a first terminal device to a first network device; and the second reference signal is a second DMRS for channel estimation for physical downlink shared channel (PDSCH) decoding of PDSCH transmission from a second network device to a second terminal device.

[0202] In some examples, the first reference signal is a first sounding reference signal (SRS) for uplink channel quality measurement between a first terminal device and a first network device; and the second reference signal is a second SRS for downlink channel quality measurement between a second network device and a second terminal device.

[0203] In some examples, the first reference signal is a channel state information reference signal (CSI-RS) for uplink channel quality measurement between a first terminal device and a first network device; and the second reference signal is a second CSI-RS for downlink channel quality measurement between a second network device and a second terminal device.

[0204] In some examples, the first reference signal includes identification information of a cell where the first network device is located; and the second reference signal includes identification information of a cell where the second network device is located.

[0205] In some examples, the first reference signal and the second reference signal are orthogonalized by frequency division multiplexing (FDM) or code division multiplexing (CDM).

[0206] In a ninth aspect, a terminal device is provided, comprising: a processor, wherein the processor is configured to cause the terminal device to execute the method according to any embodiment of the first aspect to the fourth aspect.

[0207] In a tenth aspect, a network device is provided, comprising: a processor, wherein the processor is configured to cause the network device to execute a method according to any embodiment of the fifth to eighth aspects.

[0208] In an eleventh aspect, a computer-readable medium having instructions stored thereon is provided, which instructions, when executed on at least one processor, cause the at least one processor to perform the method according to any embodiment of the first aspect to the eighth aspect.

[0209] Although the present disclosure is 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.

Claims

1. A communication method implemented at a first terminal device, include: determining a first transmission direction associated with a communication resource; as well as According to determining that the transmission direction of the data transmission between the first terminal device and the first network device to be performed on the communication resource is the same as the first transmission direction, the data transmission is performed on the communication resource.

2. The method according to claim 1, further comprising: include: receiving information about a first transmission direction matrix from the first network device, each element in the first transmission direction matrix indicating a corresponding first transmission direction of a combined resource of at least one of a time domain resource, a frequency domain resource, and a spatial domain resource; Wherein determining the first transmission direction comprises: Based on the first transmission direction matrix, the first transmission direction associated with the communication resource is determined.

3. The method of claim 1 , wherein the data transmission to be performed on the communication resource is a physical uplink shared channel (PUSCH) transmission from the first terminal device to the first network device on the communication resource; The method also include: determining a cross link interference (CLI) between the first terminal device and a second terminal device on the communication resource based on determining that the transmission direction of the PUSCH transmission to be performed on the communication resource is opposite to the first transmission direction; and Based on determining that the CLI is within a predefined condition, performing the PUSCH transmission on the communication resource.

4. The method according to claim 3, further comprising: include: Based on determining that the CLI exceeds the predefined condition, one of the following: Abandoning the PUSCH transmission; Perform power fallback; as well as The PUSCH transmission is performed on a communication resource different from the communication resource.

5. The method according to claim 3, further comprising: include: Based on the determined CLI, an indication is sent to the first network device regarding whether a CLI is present on the communication resource.

6. The method of claim 1 , wherein the data transmission to be performed on the communication resource is a physical downlink shared channel (PDSCH) transmission from the first network device to the first terminal device on the communication resource; Wherein performing the data transmission on the communication resource comprises: Sending a reference signal on the communication resource before performing the PDSCH transmission according to determining that the transmission direction of the PDSCH transmission to be performed on the communication resource is the same as the first transmission direction; as well as The PDSCH transmission is performed on the communication resources.

7. The method of claim 1 , wherein the data transmission to be performed on the communication resource is a physical uplink shared channel (PUSCH) transmission from the first terminal device to the first network device on the communication resource; Wherein performing the data transmission on the communication resource comprises: detecting a reference signal on the communication resource before sending the PUSCH according to determining that the transmission direction of the PUSCH transmission to be performed on the communication resource is opposite to the first transmission direction; as well as The PUSCH transmission is performed on the communication resource.

8. The method according to claim 6 or 7, wherein the reference signal on the communication resource corresponds to a predefined sequence, the predefined sequence is orthogonal to another predefined sequence, and the other predefined sequence corresponds to another reference signal on another communication resource different from the communication resource.

9. The method according to claim 8, wherein the predefined sequence includes identification information of a cell where the first terminal device is located.

10. A communication method implemented at a first terminal device, include: receiving, from a first network device, an indication for scheduling a first communication resource for a first data transmission from the first terminal device to the first network device, and scheduling a second communication resource for a second data transmission from the first terminal device to the first network device; determining a first transmission direction associated with the first communication resource and a second transmission direction associated with the second communication resource; performing the first data transmission on the first communication resource using a first transmission power based on determining that the first transmission direction is opposite to a transmission direction from the first terminal device to the first network device; as well as Based on determining that the second transmission direction is the same as the transmission direction from the first terminal device to the first network device, the second data transmission is performed on the second communication resource using a second transmission power greater than the first transmission power.

11. The method according to claim 10, wherein the indication include: Two sets of transmission power control (TPC) parameters corresponding to the first transmission power and the second transmission power, respectively.

12. A communication method implemented at a first terminal device, include: receiving a command from a first network device, the command comprising: a first part for pre-scheduling communication resources for data transmission between the first terminal device and the first network device, and a second part for defining a set of parameters for a channel access procedure; performing the channel access procedure on the communication resource based on the set of parameters; and performing the data transmission on the communication resource according to determining that the channel on the communication resource is idle; The parameter set of the channel access procedure corresponds to a relationship between a transmission direction of the data transmission to be performed and a first transmission direction associated with the communication resource.

13. The method according to claim 12, wherein if the transmission direction of the data transmission to be performed is opposite to the first transmission direction associated with the communication resource, the parameter set includes first monitoring information indicating a first monitoring duration of the channel access procedure.

14. The method according to claim 13, wherein if the transmission direction of the data transmission to be performed is the same as the first transmission direction associated with the communication resource, the parameter set comprises second listening information indicating a second listening duration of the channel access procedure, The first monitoring duration is longer than the second monitoring duration.

15. A communication method implemented at a first terminal device, include: receiving a first reference signal from a first network device on a communication resource; as well as receiving a second reference signal from a second terminal device on the communication resource for CLI measurement between the first terminal device and the second terminal device; The first reference signal and the second reference signal are orthogonal.

16. The method according to claim 15, wherein the first reference signal includes identification information of a cell where the first terminal device is located; and The second reference signal includes identification information of a cell where the second terminal device is located.

17. A communication method implemented at a first network device, include: determining a first transmission direction associated with a communication resource; as well as According to determining that the transmission direction of the data transmission between the first network device and the first terminal device to be performed on the communication resource is the same as the first transmission direction, the data transmission is performed on the communication resource.

18. The method of claim 17, wherein the data transmission to be performed on the communication resource is a physical uplink shared channel (PUSCH) transmission from the first terminal device to the first network device on the communication resource; Wherein performing the data transmission on the communication resource comprises: sending a reference signal to a second network device on the communication resource according to determining that the transmission direction of the PUSCH transmission to be performed on the communication resource is the same as the first transmission direction; as well as The PUSCH transmission is performed on the communication resource.

19. The method of claim 18, wherein the reference signal on the communication resource corresponds to a predefined sequence, the predefined sequence being orthogonal to another predefined sequence corresponding to another reference signal on another communication resource different from the communication resource.

20. The method according to claim 18, wherein the predefined sequence includes identification information of a cell where the first network device is located.

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