Spatial domain parameter determination method, terminal, and network-side device

Abstract

Embodiments of the present application belong to the technical field of communications, and disclose a spatial domain parameter determination method, a terminal, and a network-side device. The spatial domain parameter determination method in an embodiment of the present application comprises: a terminal determines, on the basis of whether uplink transmission and downlink reception are present on a first time domain unit, spatial domain parameters used for uplink transmission or the downlink reception, the first time domain unit being an SBFD time domain unit; and the terminal uses the spatial domain parameters to perform uplink transmission or downlink reception.

Description

Airspace parameter determination method, terminal and network side equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on September 5, 2023, with application number 202311144124.2 and invention name “Airspace Parameter Determination Method, Terminal and Network Side Equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a method for determining airspace parameters, a terminal, and a network-side device. Background Art

[0004] In related technologies, the network side supports full-duplex and the terminal side supports half-duplex. The network side can simultaneously send downlink data and receive uplink data within a time domain unit (such as a time slot or symbol); while the terminal can only perform uplink transmission or downlink reception in a time unit.

[0005] If the terminal supports full-duplex, it can achieve coverage gain and latency reduction while maintaining high uplink and downlink performance (throughput). Currently, the terminal's uplink transmission and downlink reception use fixed spatial parameters, which cannot be flexibly used by the terminal, potentially affecting communication performance.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide a method for determining airspace parameters, a terminal, and a network-side device, which can solve the problem of affecting communication performance due to the terminal's inability to flexibly use airspace parameters.

[0008] In a first aspect, a method for determining spatial domain parameters is provided, including: a terminal determines the spatial domain parameters used for uplink transmission or downlink reception based on whether there is uplink transmission and downlink reception on a first time domain unit, where the first time domain unit is an SBFD time domain unit; and the terminal uses the spatial domain parameters to perform uplink transmission or downlink reception.

[0009] In the second aspect, a method for determining spatial domain parameters is provided, including: a network side device sends indication information, wherein the indication information is used to indicate whether the terminal has uplink transmission and downlink reception on a first time domain unit, and the indication information is also used by the terminal to determine the spatial domain parameters used for uplink transmission or downlink reception, and the first time domain unit is an SBFD time domain unit.

[0010] According to a third aspect, a spatial domain parameter determination device is provided, including: a determination module for determining the spatial domain parameters used for uplink transmission or downlink reception based on whether uplink transmission and downlink reception exist on a first time domain unit, wherein the first time domain unit is an SBFD time domain unit; and a communication module for performing uplink transmission or downlink reception using the spatial domain parameters.

[0011] In the fourth aspect, a spatial domain parameter determination device is provided, including: a sending module for sending indication information, wherein the indication information is used to indicate whether the terminal has uplink transmission and downlink reception on a first time domain unit, and the indication information is also used by the terminal to determine the spatial domain parameters used for uplink transmission or downlink reception, and the first time domain unit is an SBFD time domain unit.

[0012] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0013] In the sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is used to determine the spatial domain parameters used for uplink transmission or downlink reception based on whether there is uplink transmission and downlink reception on a first time domain unit, the first time domain unit is an SBFD time domain unit, and the communication interface is used to use the spatial domain parameters to perform uplink transmission or downlink reception.

[0014] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0015] In the eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the communication interface is used to send indication information, the indication information is used to indicate whether the terminal has uplink transmission and downlink reception on a first time domain unit, and the indication information is also used by the terminal to determine the spatial domain parameters used for uplink transmission or downlink reception, and the first time domain unit is an SBFD time domain unit.

[0016] In the ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0017] In the tenth aspect, a wireless communication system is provided, comprising: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0018] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0019] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0020] In an embodiment of the present application, the terminal determines the spatial domain parameters used for uplink transmission or downlink reception based on whether there is uplink transmission and downlink reception on the first time domain unit. The first time domain unit is an SBFD time domain unit. Since the terminal can flexibly select the spatial domain parameters to be used, it is beneficial to improve the communication performance of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of a wireless communication system according to an embodiment of the present application;

[0022] FIG2 is a schematic flowchart of a method for determining spatial parameters according to an embodiment of the present application;

[0023] FIG3 is a schematic diagram of a specific application of the method for determining spatial parameters according to an embodiment of the present application;

[0024] FIG4 is a schematic flowchart of a method for determining spatial parameters according to an embodiment of the present application;

[0025] FIG5 is a schematic diagram of a specific application of the method for determining spatial parameters according to an embodiment of the present application;

[0026] FIG6 is a schematic diagram of a specific application of the method for determining spatial parameters according to an embodiment of the present application;

[0027] FIG7 is a schematic diagram of a specific application of the method for determining spatial parameters according to an embodiment of the present application;

[0028] FIG8 is a schematic structural diagram of a device for determining spatial parameters according to an embodiment of the present application;

[0029] FIG9 is a schematic structural diagram of a device for determining spatial parameters according to an embodiment of the present application;

[0030] FIG10 is a schematic structural diagram of a communication device according to an embodiment of the present application;

[0031] FIG11 is a schematic structural diagram of a terminal according to an embodiment of the present application;

[0032] FIG12 is a schematic structural diagram of a network-side device according to an embodiment of the present application. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0034] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0035] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0036] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and the NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6G) system. th Generation, 6G) communication system.

[0037] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer, a laptop computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, an aircraft, a vehicle user equipment (VUE), a ship-borne device, a pedestrian user equipment (PUE), a smart home (a household appliance with wireless communication capabilities, such as a refrigerator, television, washing machine, or furniture), a game console, a personal computer (PC), a teller machine, or a self-service machine, or other terminal-side device. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AS) or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0038] The following describes in detail the method for determining the spatial parameters provided by the embodiments of the present application through some embodiments and their application scenarios in combination with the accompanying drawings.

[0039] As shown in FIG2 , an embodiment of the present application provides a method 200 for determining an airspace parameter. The method can be executed by a terminal. In other words, the method can be executed by software or hardware installed in the terminal. The method includes the following steps.

[0040] S202: The terminal determines spatial domain parameters used for uplink transmission or downlink reception according to whether uplink transmission and downlink reception occur in a first time domain unit, where the first time domain unit is a subband full-duplex (SBFD) time domain unit.

[0041] An SBFD time domain unit refers to a time domain unit in which both uplink subbands and downlink subbands or flexible subbands exist. Alternatively, a time domain unit in which both downlink subbands and uplink subbands or flexible subbands exist. A flexible subband refers to a subband that can be scheduled for uplink transmission or downlink reception.

[0042] In this embodiment, the first time domain unit may be a time slot or a symbol. In the first time domain unit, the terminal may be instructed (or configured) to perform one of the following: simultaneous uplink transmission and downlink reception; only uplink transmission; or only downlink reception.

[0043] As shown in Figure 3, Figure 3(a) shows the subband (SB) and guard band (GB) configuration for full-duplex subband on the network side, that is, the network configures the time-frequency resources of the uplink subband (UL SB) and downlink subband (DL SB) (or guard interval). In the UL subband, the network receives the UL channel or signal of the served terminal, and in the DL subband, the network transmits the DL channel or signal to the served terminal. Figure 3(b) shows the subband configuration for full-duplex subband on the UE side. The network configures the time-frequency resources of the uplink subband (UL SB) and downlink subband (DL SB) (or guard interval) for the terminal. The terminal's UL transmission will generate self-interference on the DL reception. The capabilities of different terminals may be different, so the guard interval may be different.

[0044] Optionally, the existence of uplink transmission and downlink reception (ie, simultaneous transmission and reception) in the first time domain unit includes: in the first time domain unit, at least one symbol of the uplink transmission and the downlink reception overlaps.

[0045] As shown in Figure 3, for a terminal that supports simultaneous transmission and reception, when the terminal performs simultaneous transmission and reception, uplink transmission causes self-interference on downlink reception, which can affect the terminal's communication performance. Currently, specific spatial domain parameters are used for uplink transmission and downlink reception of the terminal, without considering self-interference suppression methods. To suppress self-interference, in S202, the terminal determines the spatial domain parameters used for uplink transmission or downlink reception based on whether uplink transmission and downlink reception occur in the first time domain unit, which may include at least one of the following:

[0046] 1) If there is only uplink transmission in the first time domain unit, the terminal determines to use the first spatial domain parameter to perform uplink transmission.

[0047] 2) If there is uplink transmission and downlink reception in the first time domain unit, the terminal determines to use the second spatial domain parameter to perform uplink transmission.

[0048] 3) If there is only downlink reception in the first time domain unit, the terminal determines to use the third spatial domain parameter to perform downlink reception.

[0049] 4) If uplink transmission and downlink reception exist in the first time domain unit, the terminal determines to use the fourth spatial domain parameter to perform downlink reception.

[0050] The first airspace parameter, the second airspace parameter, the third airspace parameter, or the fourth airspace parameter may be configured or indicated by a network-side device, i.e., the terminal side may be pre-configured or indicated with multiple airspace parameters. The network side may also pre-acquire the multiple airspace parameters based on the terminal's uplink transmission.

[0051] S204: The terminal uses the spatial domain parameters to perform uplink transmission or downlink reception.

[0052] The uplink sending may include sending an uplink channel or signal; and the downlink receiving may include receiving a downlink channel or signal.

[0053] The spatial parameters provided in various embodiments of the present application may include at least one of the following: sounding reference signal (SRS) spatial relation info, PUCCH spatial relation info, transmission configuration indicator (TCI) state, etc.

[0054] In the spatial domain parameter determination method provided in the embodiment of the present application, the terminal determines the spatial domain parameters used for uplink transmission or downlink reception based on whether there is uplink transmission and downlink reception on the first time domain unit. The first time domain unit is an SBFD time domain unit. Since the terminal can flexibly select the spatial domain parameters to be used, it is beneficial to improve the communication performance of the terminal.

[0055] To improve terminal communication performance, for example, the terminal determines spatial parameters to reduce self-interference. These parameters can minimize the self-interference caused by the terminal's uplink transmission on downlink reception, thereby reducing terminal self-interference. If the terminal has sufficient self-interference suppression capabilities, it can also improve terminal throughput and coverage performance, reducing latency.

[0056] The spatial parameter determination method provided in the embodiment of the present application is beneficial to improving system resource utilization, reducing latency, and improving coverage through the configuration of full-duplex operation in NR.

[0057] In one example, the uplink transmission includes physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) transmission.

[0058] The terminal determines to use the first spatial domain parameter to perform uplink transmission, including: the terminal uses the first spatial domain parameter to perform the PUSCH transmission in the first time domain unit; wherein the terminal is only instructed to perform uplink transmission in the first time domain unit.

[0059] The terminal determines to use the second spatial domain parameters to perform uplink transmission, including: the terminal uses the second spatial domain parameters to perform the PUSCH transmission in the first time domain unit; wherein, the terminal is instructed to simultaneously perform uplink transmission and downlink reception in the first time domain unit, and the use of the second spatial domain parameters can reduce self-interference in receiving the downlink data.

[0060] The PUSCH transmission may include PUSCH initial transmission or retransmission.

[0061] The PUSCH transmission may be repeated transmission of the PUSCH indicated by a dynamic Grant, and the terminal is indicated with x spatial domain parameters, where x is an integer greater than 1, and the first spatial domain parameter is one of the x spatial domain parameters, and the second spatial domain parameter is one of the x spatial domain parameters. The first spatial domain parameter is different from the second spatial domain parameter. This example may refer to Example 3 below.

[0062] The PUSCH transmission may be repeated transmission of a configured grant (CG) PUSCH, the terminal being configured with y spatial domain parameters, y being an integer greater than 1, the first spatial domain parameter being one of the y spatial domain parameters, the second spatial domain parameter being one of the y spatial domain parameters, the first spatial domain parameter being different from the second spatial domain parameter, and this example may refer to Example 4 below.

[0063] In this example, for PUSCH repetitions indicated by dynamic grants, the network indicates x spatial parameters. For time domain units in which only PUSCH is transmitted, the terminal applies the first spatial parameter in x. For a time domain unit in which PUSCH is transmitted and downlink reception is also occurring, the terminal applies the second spatial parameter in x.

[0064] For PUSCH retransmissions with authorization configured, the network configures y spatial parameters. For time domain units with only PUSCH transmission, the terminal applies the first spatial parameter in y. For a time domain unit with PUSCH transmission and downlink reception, the terminal applies the second spatial parameter in y.

[0065] In one example, the uplink transmission includes physical uplink control channel (PUCCH) transmission.

[0066] The terminal determines to use the first spatial domain parameter to perform uplink transmission, including: the terminal uses the first spatial domain parameter to perform the PUCCH transmission in the first time domain unit; wherein the terminal is only instructed to perform uplink transmission in the first time domain unit.

[0067] The terminal determines to use the second spatial domain parameter to perform uplink transmission, including: the terminal uses the second spatial domain parameter to perform the PUCCH transmission in the first time domain unit; wherein, the terminal is instructed to simultaneously perform uplink transmission and downlink reception in the first time domain unit, and the use of the second spatial domain parameter can reduce the self-interference of receiving the downlink data.

[0068] The PUCCH transmission is a dynamic authorization indication or a configured PUCCH repeated transmission, the terminal is indicated or configured with z spatial domain parameters, z is an integer greater than 1, the first spatial domain parameter is one of the z spatial domain parameters, the second spatial domain parameter is one of the z spatial domain parameters, and the first spatial domain parameter is different from the second spatial domain parameter.

[0069] In this example, for dynamic grant indications or configured PUCCH repetitions, the network indicates z spatial domain parameters. For time domain units where only PUCCH is transmitted, the terminal applies the first spatial domain parameter in z. For a time domain unit where PUCCH is transmitted, if downlink reception is also occurring, the terminal applies the second spatial domain parameter in z. For this example, please refer to Example 5 below.

[0070] Optionally, the PUCCH transmission is associated with a reference signal, and the spatial domain parameter used for the PUCCH transmission is the same as the spatial domain parameter used for sending or receiving the reference signal. For details, please refer to the description of Example 5 below.

[0071] In one example, the downlink reception includes physical downlink shared channel (PDSCH) reception.

[0072] The terminal determines to use the third spatial domain parameter to perform downlink reception, including: the terminal uses the third spatial domain parameter to perform the PDSCH reception in the first time domain unit; wherein the terminal is only instructed to perform downlink reception in the first time domain unit.

[0073] The terminal determines to use the fourth spatial domain parameter to perform downlink reception, including: the terminal uses the fourth spatial domain parameter to perform the PDSCH reception in the first time domain unit; wherein, the terminal is instructed to simultaneously perform uplink transmission and downlink reception in the first time domain unit, and the use of the fourth spatial domain parameter can reduce the self-interference of sending the uplink data.

[0074] The PDSCH reception may include PDSCH repetition.

[0075] In which, the PDSCH reception can be repeated reception of PDSCH indicated or configured for dynamic authorization, the terminal is indicated or configured with m spatial domain parameters, m is an integer greater than 1, the third spatial domain parameter is one of the m spatial domain parameters, the fourth spatial domain parameter is one of the m spatial domain parameters, and the third spatial domain parameter is different from the fourth spatial domain parameter.

[0076] In this example, for repeated PDSCH receptions with dynamic grant indications and configurations (e.g., SPS PDSCH), the network indicates m spatial domain parameters. For time domain units with only PDSCH reception, the terminal applies the third spatial domain parameter in m for reception. For a time domain unit with a PDSCH reception, if there is also an uplink transmission, the terminal applies the fourth spatial domain parameter in m for reception. For this example, please refer to Example 6 below.

[0077] It should be noted that the above-mentioned first spatial domain parameter, second spatial domain parameter, third spatial domain parameter or fourth spatial domain parameter are for description to avoid confusion and are not actual sequential numbers. For example, in the first time domain unit, there is only uplink transmission, and the terminal adopts the first UL spatial domain parameter (corresponding to the first spatial domain parameter); in the first time domain unit, there is both uplink transmission and downlink reception. At this time, the terminal DL uses the determined DL spatial domain parameter indicated by the network, and the terminal adopts the second UL spatial domain parameter (corresponding to the second spatial domain parameter); in the first time domain unit, there is only downlink reception, and the terminal adopts the first DL spatial domain parameter (corresponding to the third spatial domain parameter); in the first time domain unit, there is both uplink transmission and downlink reception. At this time, the terminal UL uses the determined UL spatial domain parameter indicated by the network, and the terminal adopts the second DL spatial domain parameter (corresponding to the fourth spatial domain parameter).

[0078] Specifically, for a DL reception with a network-directed determination of DL spatial parameters, only the second UL spatial parameters may be adjusted to minimize UL transmission interference on the DL. For a UL transmission with a network-directed determination of UL spatial parameters, only the second DL spatial parameters may be adjusted to avoid interference from the UL.

[0079] The second UL airspace parameter and the second DL airspace parameter can be adjusted at different times or at the same time. If adjusted at the same time, they should belong to a set of UL-DL airspace parameter pairs configured by the network. Among the airspace parameter pairs in the set, the second UL airspace parameter and the second DL airspace parameter have lower interference.

[0080] By setting the above-mentioned spatial parameters, the interference achieved by the second UL spatial domain parameter and the second DL spatial domain parameter can be minimized. Specifically, the second UL spatial domain parameter can be adjusted first to minimize the interference of UL transmission on DL, and then the second DL spatial domain parameter can be adjusted to avoid interference with DL again.

[0081] Optionally, based on the above embodiments, the method also includes: within a time domain period, the terminal uses different spatial domain parameters to send uplink data to obtain a self-interference measurement result of the sent uplink data on the received downlink data, and the self-interference measurement result is used (network side equipment) to determine the spatial domain parameters used by the terminal for uplink sending or downlink receiving to minimize self-interference. For details, please refer to the introduction of Example 2 below.

[0082] Optionally, based on the above embodiments, the terminal determines the spatial domain parameters used for uplink transmission or downlink reception according to whether there is uplink transmission and downlink reception on the first time domain unit, including: when there is uplink transmission and downlink reception on the first time domain unit, the terminal determines the spatial domain parameters used for uplink transmission according to the type of downlink reception corresponding to the uplink transmission; or when there is uplink transmission and downlink reception on the first time domain unit, the terminal determines the spatial domain parameters used for downlink reception according to the type of uplink transmission corresponding to the downlink reception; wherein the type of downlink reception includes: PDSCH, CSI-RS or PDCCH, and the type of uplink transmission includes: PUSCH, PUCCH or SRS.

[0083] In this embodiment, in the case of the same uplink transmission and different downlink reception combinations, the spatial parameters used for the uplink transmission are different. For example, the network can configure the spatial parameters applied respectively when PUSCH transmission and different downlink reception combinations are used. For example, the network can configure: parameter set 1: spatial parameters applied when PUSCH and SPS PDSCH are transmitted simultaneously; parameter set 2: spatial parameters applied when PUSCH and CSI-RS are transmitted simultaneously. In the case of the same downlink reception and different uplink transmission combinations, the spatial parameters used for the downlink reception are different.

[0084] Optionally, based on the above embodiments, the method also includes: if one uplink transmission overlaps with more than one downlink reception, the terminal performs uplink transmission according to predefined spatial parameters or spatial parameters configured by the network; or, if one downlink reception overlaps with more than one uplink transmission, the terminal performs downlink reception according to predefined spatial parameters or spatial parameters configured by the network. For details, please refer to the introduction of Example 9 below.

[0085] The above describes in detail the method for determining spatial parameters according to an embodiment of the present application in conjunction with FIG2 . The following describes in detail the method for determining spatial parameters according to another embodiment of the present application in conjunction with FIG4 . It is understood that the interaction between the network-side device and the terminal described from the perspective of the network-side device is the same as or corresponds to the description of the terminal side in the method shown in FIG2 . To avoid repetition, the relevant description is appropriately omitted.

[0086] FIG4 is a schematic diagram of a method for determining spatial parameters according to an embodiment of the present invention, which can be applied to network-side devices. As shown in FIG4 , the method 400 includes the following steps.

[0087] S402: The network side device sends indication information, where the indication information is used to indicate whether the terminal has uplink transmission and downlink reception in the first time domain unit. The indication information is also used by the terminal to determine the spatial domain parameters used for uplink transmission or downlink reception. The first time domain unit is an SBFD time domain unit.

[0088] In the method for determining spatial domain parameters provided in an embodiment of the present application, a network-side device sends indication information, where the indication information is used to indicate whether the terminal has uplink transmission and downlink reception on a first time domain unit. The indication information is also used by the terminal to determine the spatial domain parameters used for uplink transmission or downlink reception. The first time domain unit is an SBFD time domain unit. Since the terminal can flexibly select the spatial domain parameters to be used, it is beneficial to improve the communication performance of the terminal.

[0089] Optionally, as an embodiment, the method satisfies at least one of the following: 1) if there is only uplink transmission on the first time domain unit, the indication information instructs the terminal to determine to use the first spatial domain parameter to perform uplink transmission; 2) if there is uplink transmission and downlink reception on the first time domain unit, the indication information instructs the terminal to determine to use the second spatial domain parameter to perform uplink transmission; 3) if there is only downlink reception on the first time domain unit, the indication information instructs the terminal to determine to use the third spatial domain parameter to perform downlink reception; 4) if there is uplink transmission and downlink reception on the first time domain unit, the indication information instructs the terminal to determine to use the fourth spatial domain parameter to perform downlink reception.

[0090] Optionally, as an embodiment, the uplink transmission includes PUSCH transmission, the PUSCH transmission is PUSCH repeated transmission indicated by dynamic authorization, and the indication information is also used to indicate x spatial domain parameters for the terminal, x is an integer greater than 1, the first spatial domain parameter is one of the x spatial domain parameters, and the second spatial domain parameter is one of the x spatial domain parameters; or the PUSCH transmission is PUSCH repeated transmission with configuration authorization, and the indication information is also used to indicate y spatial domain parameters for the terminal, y is an integer greater than 1, the first spatial domain parameter is one of the y spatial domain parameters, and the second spatial domain parameter is one of the y spatial domain parameters.

[0091] Optionally, as an embodiment, the uplink transmission includes PUCCH transmission, the PUCCH transmission is a dynamic authorization indication or a configured PUCCH repeated transmission, and the indication information is also used to indicate z spatial domain parameters for the terminal, z is an integer greater than 1, the first spatial domain parameter is one of the z spatial domain parameters, and the second spatial domain parameter is one of the z spatial domain parameters.

[0092] Optionally, as an embodiment, the downlink reception includes PDSCH reception, the PDSCH reception is a dynamic authorization indication or a configured PDSCH repeated reception, and the indication information is also used to indicate m spatial domain parameters for the terminal, m is an integer greater than 1, the third spatial domain parameter is one of the m spatial domain parameters, and the fourth spatial domain parameter is one of the m spatial domain parameters.

[0093] To illustrate in detail the method for determining the airspace parameters provided in the embodiments of the present application, several specific embodiments will be described below. The following embodiments can be implemented individually or in combination.

[0094] Example 1

[0095] To simplify the description, the present embodiment defines the following two full-duplex modes, namely:

[0096] Network full-duplex operation: full-duplex is applied on the network side and half-duplex is applied on the UE side.

[0097] Terminal full-duplex operation: full-duplex is applied on the network side and the UE side.

[0098] The UE side is half-duplex, that is, it can only receive DL signals or channels, or send UL signals or channels in one time unit.

[0099] Full-duplex on the UE side means that a DL signal or channel is received and an UL signal or channel is sent simultaneously in one time unit.

[0100] Network full-duplex mode can achieve the goals of enhancing coverage, reducing transmission delay, and improving resource utilization efficiency. Terminal full-duplex mode can achieve the above gains while improving DL or UL throughput.

[0101] Typically, a guard band is reserved between UL and DL transmissions, such as a guard interval, to achieve frequency isolation and reduce self-interference. The UE's self-interference mitigation capability is generally weaker than that of the gNB. For simultaneous transmission and reception on the UE side, a larger number of GBs must be reserved than on the gNB side, meaning more physical resource blocks (PRBs) must be reserved as guard bands.

[0102] As shown in Figure 3 (a), the subband and guard interval (GB) configuration for full-duplex subbands on the network side illustrates the network's allocation of time-frequency resources for uplink (UL) and downlink (DL) subbands (or GBs). In the UL subbands, the network receives UL channels or signals from served terminals, while in the DL subbands, the network transmits DL channels or signals to served terminals. This DL transmission can cause self-interference in UL reception.

[0103] Figure 3(b) shows the subband configuration of full-duplex subband on the UE side. The network configures the time-frequency resources of the UL subband and DL subband (or GB) for the terminal. The UL transmission of the terminal will cause self-interference to the DL reception.

[0104] The capabilities of different terminals may be different, so the GB may be different.

[0105] Example 2

[0106] This embodiment mainly introduces the process of obtaining spatial domain parameters, which corresponds to the following features in the previous embodiment: within a time domain period, the terminal uses different spatial domain parameters to send uplink data.

[0107] Spatial parameter adjustment is a method for suppressing self-interference. A communication device can use spatial parameter (or spatial parameter) A to send UL channels or signals, thereby reducing interference to DL reception using spatial parameter B, thereby achieving self-interference suppression.

[0108] The terminal and the base station should obtain relevant information about the spatial parameters A of the channel or signal used for UL transmission and the spatial parameters B of the channel or signal used for DL ​​reception.

[0109] Figure 5 shows a spatial parameter acquisition process. Within a time period (e.g., a beam training period), the network configures the UE to transmit UL channels or signals using different spatial parameters while simultaneously performing measurements on the DL subband to measure self-interference. This allows the UE to measure self-interference for different transmitted spatial parameters.

[0110] The network may configure at least one CSI report configuration (CSI report config) for the UE. Each configuration may be associated with an NZP CSI-RS resource, a CSI-IM resource, and an NZP CSI-RS interference measurement resource. The network may configure the interference measurement resource to be time-domain aligned with the transmit channel or signal, measure interference using the interference measurement resource, and obtain a Channel Quality Indicator (CQI) report based on the channel measurement resource and the interference measurement resource to determine the self-interference of UL transmissions using different beam directions.

[0111] For example, the network configures the UE to periodically send SRS1 and SRS2, and also configures the UE with multiple CSI report configurations, using the associated CSI-RS (CSI-IM) for measurement. The UE can then report the measured CQI to the network.

[0112] At time t1, the UE measures CQI 1 according to CSI-RS1 and CSI-IM1 (based on TCI state 1), which can reflect the interference degree of SRS1 (spatial relation info 1) leakage.

[0113] At time t2, the UE measures CQI 2 based on CSI-RS1 and CSI-IM1 (based on TCI state 1), which reflects the interference degree of SRS2 (spatial relation info 2) leakage.

[0114] At time t3, the UE measures CQI 3 according to CSI-RS2 and CSI-IM2 (based on TCI state 2), which can reflect the interference degree of SRS1 (spatial relation info 1) leakage.

[0115] At time t4, the UE measures CQI 4 based on CSI-RS2 and CSI-IM2 (based on TCI state 2), reflecting the interference level of SRS2 (spatial relation info 2) leakage.

[0116] Different CQIs can represent the self-interference strength of a frequency in different spatial directions. Through the reported CQI 1-CQI 4, the network can obtain the interference status of the DL spatial parameters and the UL spatial parameters according to the CQI.

[0117] The DL spatial parameters may be spatial parameters associated with an SSB / PBCH block index, a Tracking Reference Signal (TRS) index, and the like.

[0118] The UL spatial parameters may be spatial parameters associated with SRS resources, for example, provided by SRS-ResourceIndicator IE or PUCCH space related information.

[0119] DL resources may include PDSCH, PDCCH, SSB / PBCH blocks, Channel State Information-Reference Signal (CSI-RS), etc.

[0120] UL resources can be PUSCH, SRS, etc.

[0121] By adopting a similar process, the UL and DL spatial parameter pairs at different frequencies can be measured by sending UL resources at different frequencies and receiving DL resources at different frequencies.

[0122] The network configures or instructs the UE to a set of spatial parameter pairs for simultaneous UE full-duplex communication. When the UE performs full-duplex communication, the UE selects the spatial parameters used for UL and the spatial parameters used for DL ​​from the set of spatial parameter pairs.

[0123] Example 3

[0124] For dynamically scheduled PUSCH repetitive transmissions, the network indicates x (>1) spatial parameters.

[0125] The network may additionally indicate an SRS resource indicator in the scheduling DCI to indicate the spatial parameters used for PUSCH repeated transmission when the UE performs UL and DL transmission simultaneously.

[0126] The network may extend the SRS resource indicator to indicate more than one spatial parameter. For example, the spatial parameter indication field in the scheduling DCI may be defined as shown in Table 1.

[0127] Table 1

[0128] Optionally, the network may configure the spatial parameters applied separately when PUSCH is received in combination with different DL signals / channels. For example, the network may configure each row in the above table, as shown in Table 2, which may include the following: spatial parameters for simultaneous transmission of PUSCH and SPS PDSCH; spatial parameters for simultaneous transmission of PUSCH and CSI-RS; spatial parameters for simultaneous transmission of PUSCH and PDCCH, etc.

[0129] Optionally, the network may configure different spatial parameters for PDCCH applications in different TCI states, including the following: spatial parameters for simultaneous transmission of PUSCH and PDCCH in TCI state A; spatial parameters for simultaneous transmission of PUSCH and PDCCH in TCI state B.

[0130] Table 2

[0131] Example 4

[0132] For the semi-statically configured CG PUSCH, the network can configure y spatial parameters, as shown in Figure 6.

[0133] For example,

[0134] For UL transmission only:

[0135] srs-ResourceIndicator-1 INTEGER(0..15).

[0136] For UL transmission of full-duplex time domain type on the UE side:

[0137] srs-ResourceIndicator-2 INTEGER(0..15).

[0138] Optionally, the network may configure spatial parameters to be applied separately when PUSCH is received in combination with different DL signals / channels, for example, configuring:

[0139] Spatial parameters for simultaneous transmission of CG PUSCH and SPS PDSCH:

[0140] srs-ResourceIndicator-2 INTEGER(0..15).

[0141] Spatial parameters for simultaneous transmission of CG PUSCH and CSI-RS:

[0142] srs-ResourceIndicator-3 INTEGER(0..15).

[0143] Spatial parameters for simultaneous transmission of CG PUSCH and PDCCH:

[0144] srs-ResourceIndicator-4 INTEGER(0..15).

[0145] Optionally, the network may configure srs-ResourceIndicator-2 / 3 / 4 to be used as a time domain unit configured for full-duplex on the UE side (in which time domain unit there may be only UL transmission), or as a time domain unit for full-duplex operation of the UE (in which time domain unit there are both UL and DL transmissions).

[0146] Embodiment 5:

[0147] In the first time domain unit, for the following two cases: only PUCCH transmission; both PUCCH transmission and downlink reception, the network can configure or indicate different spatial domain parameters, such as configuring different PUCCH-SpatialRelationInfo (through parameter spatialRelationInfo).

[0148] For UL transmission only:

[0149] PUCCH-SpatialRelationInfo-1 INTEGER(0..15).

[0150] For UL transmission of full-duplex time domain type on the UE side:

[0151] PUCCH-SpatialRelationInfo-2 INTEGER(0..15).

[0152] The network can configure a spatial relationship between a reference RS and PUCCH. The reference RS can be SSB / CSI-RS / SRS.

[0153] If the reference signal configured by PUCCH-SpatialRelationInfo is an SSB index, the UE transmits the PUCCH using the same spatial parameters as the received SS / PBCH block, where the index of the SS / PBCH block is determined by the SSB index of the same serving cell, or, if servingCellId is provided, by the serving cell indicated by servingCellId.

[0154] If the reference signal configured by PUCCH-SpatialRelationInfo is CSI-RS-Index, the UE sends PUCCH using the same spatial parameters as the received CSI-RS, where the CSI-RS is determined by the CSI-RS-Index of the same serving cell, or, if servingCellId is provided, is determined by the serving cell indicated by servingCellId.

[0155] If the reference signal configured by PUCCH-SpatialRelationInfo is SRS, the UE transmits PUCCH using the same spatial parameters as for SRS transmission. The SRS is determined by the SRS resource index for the same serving cell and / or activated UL BWP, or, if servingCellId and / or uplinkBWP are provided, by the serving cell indicated by servingCellId and / or the UL BWP indicated by uplinkBWP.

[0156] Optionally, the network may configure spatial parameters to be applied separately when PUCCH is received in combination with different DL signals / channels, for example, configuring:

[0157] Spatial parameters for simultaneous transmission of PUCCH and SPS PDSCH:

[0158] PUCCH-SpatialRelationInfo-2.

[0159] Spatial parameters for simultaneous transmission of PUCCH and CSI-RS:

[0160] PUCCH-SpatialRelationInfo-3.

[0161] Spatial parameters for simultaneous PUCCH and PDCCH transmission:

[0162] PUCCH-SpatialRelationInfo-4.

[0163] Optionally, the network may configure PUCCH-SpatialRelationInfo-2 / 3 to be used as a time domain unit for full-duplex on the UE side (in which time domain unit there may be only UL transmission), or as a time domain unit for full-duplex operation of the UE (in which time domain unit there are both UL and DL transmissions).

[0164] Example 6

[0165] For dynamically scheduled PDSCH or SPS PDSCH retransmissions, the network indicates the corresponding x (>1) spatial parameters.

[0166] The network may additionally indicate a TCI state indicator in the scheduling DCI or activation DCI to indicate the spatial parameters used when the UE only has DL transmission or performs UL and DL transmission simultaneously.

[0167] The network may extend the TCI state indicator to indicate more than one spatial parameter. For example, the spatial parameter indication field in the scheduling DCI or activation DCI may be defined as shown in Table 1.

[0168] Optionally, the network may configure the spatial parameters to be applied separately when PDSCH is received in combination with different UL signals / channels. For example, the network may configure each row in Table 1 above, including the following: spatial parameters for simultaneous transmission of PDSCH and CG PUSCH; spatial parameters for simultaneous transmission of PDSCH and SRS; spatial parameters for simultaneous transmission of PDSCH and PUCCH; spatial parameters for simultaneous transmission of PDSCH and PRACH.

[0169] It is worth noting that the spatial domain parameters determined in this embodiment may be the same as those determined in the above embodiment, except that they are used for DL ​​reception indication or UL transmission indication.

[0170] Example 7

[0171] For dynamically scheduled PUSCH repeated transmissions, the network may indicate more than one Transmitted Precoding Matrix Indicator (TPMI) value to the UE, which is used to indicate spatial parameters used when the UE performs UL and DL transmissions simultaneously.

[0172] For configured PUSCH repeated transmissions, the network may configure more than one TPMI value for the UE to indicate the spatial parameters used when the UE performs simultaneous UL and DL transmissions.

[0173] Example 8

[0174] UL and DL transmissions are performed simultaneously, as long as the channel / signal of the DL transmission overlaps with the channel / signal of the UL transmission by at least one symbol.

[0175] Embodiment 9

[0176] If a UL channel / signal overlaps with more than one DL channel / signal, the UE transmits the UL channel / signal according to predefined rules or spatial parameters configured by the network.

[0177] For example, the network indicates that spatial parameter A is used when a CG PUSCH and an SPS PDSCH are transmitted and received simultaneously, and the network indicates that spatial parameter B is used when a CG PUSCH and a CSI-RS are transmitted and received simultaneously.

[0178] If CG PUSCH is transmitted and received simultaneously with SPS PDSCH and CSI-RS, as shown in Figure 7, the UE can use one of the spatial parameters A or B for transmission according to predefined rules, or the UE can transmit according to the additional spatial parameter C indicated by the network.

[0179] Similarly, if one DL channel / signal overlaps with more than one UL channel / signal, the UE receives the DL channel / signal according to predefined rules or spatial parameters configured by the network.

[0180] The network indicates to the UE a set of UL airspace parameters and DL airspace parameter pairs for full-duplex communication, which can be configured or indicated through dynamic signaling, MAC CE or RRC signaling.

[0181] The airspace parameter determination method provided in the embodiment of the present application can be executed by an airspace parameter determination device. In the embodiment of the present application, the airspace parameter determination device performing the airspace parameter determination method is used as an example to illustrate the airspace parameter determination device provided in the embodiment of the present application.

[0182] FIG8 is a schematic diagram of the structure of an apparatus for determining spatial parameters according to an embodiment of the present application, which may correspond to a terminal in other embodiments. As shown in FIG8 , apparatus 800 includes the following modules.

[0183] The determination module 802 is configured to determine spatial domain parameters used for uplink transmission or downlink reception according to whether uplink transmission and downlink reception exist in a first time domain unit, where the first time domain unit is an SBFD time domain unit.

[0184] The communication module 804 is configured to perform uplink transmission or downlink reception using the spatial domain parameters.

[0185] In an embodiment of the present application, the device 800 determines the spatial domain parameters used for uplink transmission or downlink reception based on whether there is uplink transmission and downlink reception on the first time domain unit. The first time domain unit is an SBFD time domain unit. Since the spatial domain parameters used can be flexibly selected, it is beneficial to improve communication performance.

[0186] Optionally, as an embodiment, the determination module 802 is used for at least one of the following: 1) if there is only uplink transmission on the first time domain unit, determining to use the first spatial domain parameter to perform uplink transmission; 2) if there is uplink transmission and downlink reception on the first time domain unit, determining to use the second spatial domain parameter to perform uplink transmission; 3) if there is only downlink reception on the first time domain unit, determining to use the third spatial domain parameter to perform downlink reception; 4) if there is uplink transmission and downlink reception on the first time domain unit, determining to use the fourth spatial domain parameter to perform downlink reception.

[0187] Optionally, as an embodiment, the uplink transmission includes PUSCH transmission, and the communication module 804 is used to perform the PUSCH transmission using the first spatial domain parameter in the first time domain unit; or perform the PUSCH transmission using the second spatial domain parameter in the first time domain unit; wherein, the PUSCH transmission is a PUSCH repeated transmission indicated by dynamic authorization, and the device is indicated with x spatial domain parameters, x is an integer greater than 1, the first spatial domain parameter is one of the x spatial domain parameters, and the second spatial domain parameter is one of the x spatial domain parameters; or the PUSCH transmission is a PUSCH repeated transmission with configuration authorization, and the device is configured with y spatial domain parameters, y is an integer greater than 1, the first spatial domain parameter is one of the y spatial domain parameters, and the second spatial domain parameter is one of the y spatial domain parameters.

[0188] Optionally, as an embodiment, the uplink transmission includes PUCCH transmission, and the communication module 804 is used to perform the PUCCH transmission using the first spatial domain parameter in the first time domain unit; or to perform the PUCCH transmission using the second spatial domain parameter in the first time domain unit; wherein, the PUCCH transmission is a dynamic authorization indication or configured PUCCH repeated transmission, and the device is indicated or configured with z spatial domain parameters, z is an integer greater than 1, the first spatial domain parameter is one of the z spatial domain parameters, and the second spatial domain parameter is one of the z spatial domain parameters.

[0189] Optionally, as an embodiment, the PUCCH transmission is associated with a reference signal, and the spatial domain parameters used in the PUCCH transmission are the same as the spatial domain parameters used in sending or receiving the reference signal.

[0190] Optionally, as an embodiment, the downlink reception includes PDSCH reception, and the communication module 804 is used to perform the PDSCH reception using the third spatial domain parameter in the first time domain unit; or to perform the PDSCH reception using the fourth spatial domain parameter in the first time domain unit; wherein, the PDSCH reception is a dynamic authorization indication or configured PDSCH repeated reception, and the device is indicated or configured with m spatial domain parameters, m is an integer greater than 1, the third spatial domain parameter is one of the m spatial domain parameters, and the fourth spatial domain parameter is one of the m spatial domain parameters.

[0191] Optionally, as an embodiment, the communication module 804 is further configured to send uplink data using different spatial domain parameters within a time domain period.

[0192] Optionally, as an embodiment, the existence of uplink transmission and downlink reception in the first time domain unit includes: at least one symbol of the uplink transmission and the downlink reception overlaps in the first time domain unit.

[0193] Optionally, as an embodiment, the determination module 802 is used for at least one of the following: 1) when there is uplink transmission and downlink reception on the first time domain unit, the terminal determines the spatial domain parameters used for the uplink transmission according to the type of the downlink reception corresponding to the uplink transmission; 2) when there is uplink transmission and downlink reception on the first time domain unit, the terminal determines the spatial domain parameters used for the downlink reception according to the type of the uplink transmission corresponding to the downlink reception; wherein the type of downlink reception includes: PDSCH, CSI-RS or PDCCH, and the type of uplink transmission includes: PUSCH, PUCCH or SRS.

[0194] Optionally, as an embodiment, the communication module 804 is further used to: if one uplink transmission overlaps with more than one downlink reception, perform uplink transmission according to predefined spatial parameters or spatial parameters configured by the network; or if one downlink reception overlaps with more than one uplink transmission, perform downlink reception according to predefined spatial parameters or spatial parameters configured by the network.

[0195] Optionally, as an embodiment, the spatial domain parameters include at least one of the following: SRS space-related information, PUCCH space-related information, TCI status, etc.

[0196] According to the device 800 of the embodiment of the present application, the process of the method 200 corresponding to the embodiment of the present application can be referred to, and the various units / modules in the device 800 and the above-mentioned other operations and / or functions are respectively for implementing the corresponding processes in the method 200, and can achieve the same or equivalent technical effects. For the sake of brevity, they will not be repeated here.

[0197] The airspace parameter determination device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal or other device other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0198] FIG9 is a schematic diagram of the structure of an apparatus for determining spatial parameters according to an embodiment of the present application, which may correspond to a network-side device in other embodiments. As shown in FIG9 , apparatus 900 includes the following modules.

[0199] The sending module 902 is used to send indication information, where the indication information is used to indicate whether the terminal has uplink transmission and downlink reception on the first time domain unit. The indication information is also used by the terminal to determine the spatial domain parameters used for uplink transmission or downlink reception, and the first time domain unit is an SBFD time domain unit.

[0200] Optionally, as an embodiment, the apparatus 900 further includes a receiving module and the like.

[0201] In an embodiment of the present application, the sending module sends indication information, and the indication information is used to indicate whether the terminal has uplink transmission and downlink reception on the first time domain unit. The indication information is also used by the terminal to determine the spatial domain parameters used for uplink transmission or downlink reception. The first time domain unit is an SBFD time domain unit. Since the terminal can flexibly select the spatial domain parameters to be used, it is beneficial to improve the communication performance of the terminal.

[0202] Optionally, as an embodiment, the indication information satisfies at least one of the following: 1) if there is only uplink transmission on the first time domain unit, the indication information instructs the terminal to determine to use the first spatial domain parameter to perform uplink transmission; 2) if there is uplink transmission and downlink reception on the first time domain unit, the indication information instructs the terminal to determine to use the second spatial domain parameter to perform uplink transmission; 3) if there is only downlink reception on the first time domain unit, the indication information instructs the terminal to determine to use the third spatial domain parameter to perform downlink reception; 4) if there is uplink transmission and downlink reception on the first time domain unit, the indication information instructs the terminal to determine to use the fourth spatial domain parameter to perform downlink reception.

[0203] Optionally, as an embodiment, the uplink transmission includes PUSCH transmission, the PUSCH transmission is PUSCH repeated transmission indicated by dynamic authorization, and the indication information is also used to indicate x spatial domain parameters for the terminal, x is an integer greater than 1, the first spatial domain parameter is one of the x spatial domain parameters, and the second spatial domain parameter is one of the x spatial domain parameters; or the PUSCH transmission is PUSCH repeated transmission with configuration authorization, and the indication information is also used to indicate y spatial domain parameters for the terminal, y is an integer greater than 1, the first spatial domain parameter is one of the y spatial domain parameters, and the second spatial domain parameter is one of the y spatial domain parameters.

[0204] Optionally, as an embodiment, the uplink transmission includes PUCCH transmission, the PUCCH transmission is a dynamic authorization indication or a configured PUCCH repeated transmission, and the indication information is also used to indicate z spatial domain parameters for the terminal, z is an integer greater than 1, the first spatial domain parameter is one of the z spatial domain parameters, and the second spatial domain parameter is one of the z spatial domain parameters.

[0205] Optionally, as an embodiment, the downlink reception includes PDSCH reception, the PDSCH reception is a dynamic authorization indication or a configured PDSCH repeated reception, and the indication information is also used to indicate m spatial domain parameters for the terminal, m is an integer greater than 1, the third spatial domain parameter is one of the m spatial domain parameters, and the fourth spatial domain parameter is one of the m spatial domain parameters.

[0206] According to the device 900 of the embodiment of the present application, the process of the method 400 corresponding to the embodiment of the present application can be referred to, and the various units / modules in the device 900 and the above-mentioned other operations and / or functions are respectively for implementing the corresponding processes in the method 400, and can achieve the same or equivalent technical effects. For the sake of brevity, they will not be repeated here.

[0207] The spatial parameter determination device provided in the embodiment of the present application can implement the various processes implemented in the method embodiments of Figures 2 to 4 and achieve the same technical effects. To avoid repetition, they will not be described here.

[0208] Optionally, as shown in Figure 10, an embodiment of the present application further provides a communication device 1000, including a processor 1001 and a memory 1002, where the memory 1002 stores a program or instruction that can be run on the processor 1001. For example, when the communication device 1000 is a terminal, the program or instruction is executed by the processor 1001 to implement the various steps of the above-mentioned embodiment of the method for determining spatial parameters, and can achieve the same technical effect. When the communication device 1000 is a network-side device, the program or instruction is executed by the processor 1001 to implement the various steps of the above-mentioned embodiment of the method for determining spatial parameters, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0209] An embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the processor is configured to determine the spatial domain parameters used for uplink transmission or downlink reception based on whether uplink transmission and downlink reception exist on a first time domain unit, wherein the first time domain unit is an SBFD time domain unit, and the communication interface is configured to perform uplink transmission or downlink reception using the spatial domain parameters. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to the terminal embodiment and can achieve the same technical effect. Specifically, Figure 11 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.

[0210] The terminal 1100 includes but is not limited to: a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109 and at least some of the components of the processor 1110.

[0211] Those skilled in the art will appreciate that the terminal 1100 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 1110 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG11 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements, which will not be described in detail here.

[0212] It should be understood that in an embodiment of the present application, the input unit 1104 may include a graphics processing unit (GPU) 11041 and a microphone 11042, and the graphics processor 11041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1107 includes a touch panel 11071 and at least one of other input devices 11072. The touch panel 11071 is also called a touch screen. The touch panel 11071 may include two parts: a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0213] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 1101 may transmit the data to the processor 1110 for processing. Furthermore, the RF unit 1101 may send uplink data to the network-side device. Typically, the RF unit 1101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0214] The memory 1109 can be used to store software programs or instructions and various data. The memory 1109 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1109 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 1109 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0215] Processor 1110 may include one or more processing units. Optionally, processor 1110 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1110.

[0216] Among them, the processor 1110 can be used to determine the spatial domain parameters used for uplink transmission or downlink reception based on whether there is uplink transmission and downlink reception on the first time domain unit, and the first time domain unit is an SBFD time domain unit; the radio frequency unit 1101 can be used to use the spatial domain parameters to perform uplink transmission or downlink reception.

[0217] In an embodiment of the present application, the terminal determines the spatial domain parameters used for uplink transmission or downlink reception based on whether there is uplink transmission and downlink reception on the first time domain unit. The first time domain unit is an SBFD time domain unit. Since the terminal can flexibly select the spatial domain parameters to be used, it is beneficial to improve the communication performance of the terminal.

[0218] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described here.

[0219] An embodiment of the present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is configured to send indication information, the indication information being configured to indicate whether a terminal has uplink transmission and downlink reception in a first time domain unit, the indication information being further configured to be used by the terminal to determine spatial domain parameters used for uplink transmission or downlink reception, wherein the first time domain unit is an SBFD time domain unit. This network-side device embodiment corresponds to the aforementioned network-side device method embodiment, and each implementation process and implementation method of the aforementioned method embodiment are applicable to this network-side device embodiment and can achieve the same technical effects.

[0220] The present application also provides a network-side device. As shown in Figure 12, the network-side device 1200 includes an antenna 121, a radio frequency device 122, a baseband device 123, a processor 124, and a memory 125. The antenna 121 is connected to the radio frequency device 122. In the uplink direction, the radio frequency device 122 receives information via the antenna 121 and sends the received information to the baseband device 123 for processing. In the downlink direction, the baseband device 123 processes the information to be transmitted and sends it to the radio frequency device 122. The radio frequency device 122 processes the received information and then sends it through the antenna 121.

[0221] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 123 , which includes a baseband processor.

[0222] The baseband device 123 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 12, one of the chips is, for example, a baseband processor, which is connected to the memory 125 through a bus interface to call the program in the memory 125 and execute the network device operations shown in the above method embodiment.

[0223] The network side device may further include a network interface 126 , which is, for example, a Common Public Radio Interface (CPRI).

[0224] The network side device 1200 of the embodiment of the present application also includes: instructions or programs stored in the memory 125 and executable on the processor 124. The processor 124 calls the instructions or programs in the memory 125 to execute the methods executed by the modules shown in FIG9 and achieve the same technical effect. To avoid repetition, they will not be elaborated here.

[0225] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned embodiment of the spatial parameter determination method are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0226] The processor is the processor in the terminal described in the above embodiment. The readable storage medium can be non-volatile or non-transitory. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium can be non-transitory.

[0227] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned embodiment of the airspace parameter determination method, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0228] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0229] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned embodiment of the spatial parameter determination method, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0230] An embodiment of the present application also provides an airspace parameter determination system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the airspace parameter determination method described above, and the network side device can be used to execute the steps of the airspace parameter determination method described above.

[0231] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0232] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0233] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A method for determining airspace parameters, comprising: The terminal determines the spatial domain parameters used for uplink transmission or downlink reception according to whether there is uplink transmission and downlink reception in the first time domain unit, where the first time domain unit is a sub-band full-duplex SBFD time domain unit; The terminal performs uplink transmission or downlink reception using the spatial domain parameters.

2. The method according to claim 1, wherein: The terminal determines, according to whether there is uplink transmission and downlink reception in the first time domain unit, a spatial domain parameter used for uplink transmission or downlink reception, including at least one of the following: If there is only uplink transmission in the first time domain unit, the terminal determines to use the first spatial domain parameter to perform uplink transmission; If there is uplink transmission and downlink reception in the first time domain unit, the terminal determines to use the second spatial domain parameter to perform uplink transmission; If there is only downlink reception on the first time domain unit, the terminal determines to use the third spatial domain parameter to perform downlink reception; If there is uplink transmission and downlink reception in the first time domain unit, the terminal determines to use the fourth spatial domain parameter to perform downlink reception.

3. The method according to claim 2, wherein: The uplink transmission includes physical uplink shared channel PUSCH transmission, The terminal determining to use the first spatial domain parameter to perform uplink transmission includes: the terminal using the first spatial domain parameter to perform the PUSCH transmission in the first time domain unit; The terminal determining to use the second spatial domain parameter to perform uplink transmission includes: the terminal using the second spatial domain parameter to perform the PUSCH transmission in the first time domain unit; The PUSCH transmission is repeated transmission of a PUSCH indicated by a dynamic grant, the terminal is indicated with x spatial domain parameters, x is an integer greater than 1, the first spatial domain parameter is one of the x spatial domain parameters, and the second spatial domain parameter is one of the x spatial domain parameters; or The PUSCH transmission is a repeated transmission of a configured authorized PUSCH, the terminal is configured with y spatial domain parameters, y is an integer greater than 1, the first spatial domain parameter is one of the y spatial domain parameters, and the second spatial domain parameter is one of the y spatial domain parameters.

4. The method according to claim 2, wherein: The uplink transmission includes physical uplink control channel PUCCH transmission, The terminal determining to use the first spatial domain parameter to perform uplink transmission includes: the terminal using the first spatial domain parameter to perform the PUCCH transmission in the first time domain unit; The terminal determining to use the second spatial domain parameter to perform uplink transmission includes: the terminal using the second spatial domain parameter to perform the PUCCH transmission in the first time domain unit; The PUCCH transmission is a dynamic authorization indication or a configured PUCCH repeated transmission, the terminal is indicated or configured with z spatial domain parameters, z is an integer greater than 1, the first spatial domain parameter is one of the z spatial domain parameters, and the second spatial domain parameter is one of the z spatial domain parameters.

5. The method according to claim 4, wherein: The PUCCH transmission is associated with a reference signal, and the spatial domain parameter used by the PUCCH transmission is the same as the spatial domain parameter used to send or receive the reference signal.

6. The method according to claim 2, wherein: The downlink reception includes physical downlink shared channel PDSCH reception, The terminal determines to use the third spatial domain parameter to perform downlink reception, including: the terminal uses the third spatial domain parameter to perform the PDSCH reception in the first time domain unit; The terminal determines to use the fourth spatial domain parameter to perform downlink reception, including: the terminal uses the fourth spatial domain parameter to perform the PDSCH reception in the first time domain unit; The PDSCH reception is repeated reception of PDSCH indicated or configured for dynamic authorization, the terminal is indicated or configured with m spatial domain parameters, m is an integer greater than 1, the third spatial domain parameter is one of the m spatial domain parameters, and the fourth spatial domain parameter is one of the m spatial domain parameters.

7. The method according to any one of claims 1 to 6, wherein: The method further comprises: In a time domain period, the terminal sends uplink data using different spatial domain parameters.

8. The method according to any one of claims 1 to 7, wherein: The existence of uplink transmission and downlink reception on the first time domain unit includes: In the first time domain unit, at least one symbol of the uplink transmission and the downlink reception overlaps.

9. The method according to any one of claims 1 to 8, wherein: The terminal determines, according to whether there is uplink transmission and downlink reception in the first time domain unit, a spatial domain parameter used for uplink transmission or downlink reception, including: In a case where there is uplink transmission and downlink reception on the first time domain unit, the terminal determines, according to a type of the downlink reception corresponding to the uplink transmission, the spatial domain parameter used by the uplink transmission; or In a case where there is uplink transmission and downlink reception on the first time domain unit, the terminal determines, according to a type of uplink transmission corresponding to the downlink reception, the spatial domain parameter used by the downlink reception; The types of downlink reception include: PDSCH, channel state information reference signal CSI-RS or physical downlink control channel PDCCH, and the types of uplink transmission include: PUSCH, PUCCH or SRS.

10. The method according to any one of claims 1 to 9, wherein: The method further comprises: If one of the uplink transmissions overlaps with more than one of the downlink receptions, the terminal performs uplink transmission according to predefined spatial domain parameters or spatial domain parameters configured by the network; or If one of the downlink receptions overlaps with more than one of the uplink transmissions, the terminal performs downlink reception according to predefined spatial domain parameters or spatial domain parameters configured by the network.

11. The method according to any one of claims 1 to 10, wherein: The spatial domain parameters include at least one of the following: sounding reference signal SRS space related information, PUCCH space related information, and transmission configuration indication TCI state.

12. A method for determining airspace parameters, comprising: The network side device sends indication information, where the indication information is used to indicate whether the terminal has uplink transmission and downlink reception on the first time domain unit. The indication information is also used by the terminal to determine the spatial domain parameters used for uplink transmission or downlink reception. The first time domain unit is an SBFD time domain unit.

13. The method according to claim 12, wherein: The method satisfies at least one of the following: If there is only uplink transmission on the first time domain unit, the indication information instructs the terminal to determine to use the first spatial domain parameter to perform uplink transmission; If there is uplink transmission and downlink reception on the first time domain unit, the indication information instructs the terminal to determine to use the second spatial domain parameter to perform uplink transmission; If there is only downlink reception on the first time domain unit, the indication information instructs the terminal to determine to use the third spatial domain parameter to perform downlink reception; If there is uplink transmission and downlink reception in the first time domain unit, the indication information instructs the terminal to determine to use the fourth spatial domain parameter to perform downlink reception.

14. The method according to claim 13, wherein: The uplink transmission includes PUSCH transmission, The PUSCH transmission is repeated transmission of a PUSCH indicated by a dynamic grant, and the indication information is further used to indicate x spatial domain parameters for the terminal, where x is an integer greater than 1, the first spatial domain parameter is one of the x spatial domain parameters, and the second spatial domain parameter is one of the x spatial domain parameters; or The PUSCH transmission is a repeated transmission of a configured authorized PUSCH, and the indication information is also used to indicate y spatial domain parameters for the terminal, y is an integer greater than 1, the first spatial domain parameter is one of the y spatial domain parameters, and the second spatial domain parameter is one of the y spatial domain parameters.

15. The method according to claim 13, wherein: The uplink transmission includes PUCCH transmission, and the PUCCH transmission is a dynamic authorization indication or a configured PUCCH repeated transmission. The indication information is also used to indicate z spatial domain parameters for the terminal, z is an integer greater than 1, the first spatial domain parameter is one of the z spatial domain parameters, and the second spatial domain parameter is one of the z spatial domain parameters.

16. The method according to claim 13, wherein: The downlink reception includes PDSCH reception, and the PDSCH reception is a dynamic authorization indication or a configured PDSCH repeated reception. The indication information is also used to indicate m spatial domain parameters for the terminal, m is an integer greater than 1, the third spatial domain parameter is one of the m spatial domain parameters, and the fourth spatial domain parameter is one of the m spatial domain parameters.

17. A device for determining airspace parameters, comprising: A determination module, configured to determine a spatial domain parameter used for uplink transmission or downlink reception according to whether uplink transmission and downlink reception exist in a first time domain unit, wherein the first time domain unit is a SBFD time domain unit; A communication module is used to perform uplink transmission or downlink reception using the spatial domain parameters.

18. A device for determining airspace parameters, comprising: The sending module is used to send indication information, where the indication information is used to indicate whether the terminal has uplink transmission and downlink reception on the first time domain unit. The indication information is also used by the terminal to determine the spatial domain parameters used for uplink transmission or downlink reception, and the first time domain unit is an SBFD time domain unit.

19. A terminal comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method according to any one of claims 1 to 11 are implemented.

20. A network side device, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method according to any one of claims 12 to 16 are implemented.

21. A readable storage medium, wherein: The readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the method according to any one of claims 1 to 16 are implemented.

22. A chip, wherein: The chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method according to any one of claims 1-16.

23. A computer program product, wherein: The program product is executed by at least one processor to implement the method according to any one of claims 1 to 16.

24. An electronic device, configured to execute the method according to any one of claims 1 to 16.

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