Airspace parameter determination method, terminal and network side equipment

Abstract

The embodiment of the invention discloses a spatial domain parameter determination method, a terminal and network side equipment, and belongs to the technical field of communication, and the spatial domain parameter determination method comprises the steps that the terminal determines a spatial domain parameter used by uplink transmission or downlink reception according to whether uplink transmission and downlink reception exist on a first time domain unit, the first time domain unit is an SBFD time domain unit; and the terminal executes uplink transmission or downlink reception by using the airspace parameter.

Description

Technical Field

[0001] 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

[0002] In the related technology, the network side supports full-duplex and the terminal side supports half-duplex, that is, the network side can simultaneously send downlink data and receive uplink data in one time domain unit (such as time slot or symbol); while the terminal can only perform uplink transmission or downlink reception in one time unit.

[0003] If the terminal side supports full-duplex, it can achieve coverage gain and delay reduction while maintaining high uplink and downlink performance (throughput). Currently, the uplink transmission and downlink reception of the terminal use fixed airspace parameters. The terminal cannot use airspace parameters flexibly, which may affect communication performance. Summary of the invention

[0004] 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 that the communication performance is affected by the inability of the terminal to flexibly use the airspace parameters.

[0005] In a first aspect, a method for determining a spatial domain parameter is provided, including: a terminal determines a spatial domain parameter used for uplink transmission or downlink reception according to whether there is uplink transmission and downlink reception in a first time domain unit, where the first time domain unit is an SBFD time domain unit; and the terminal uses the spatial domain parameter to perform uplink transmission or downlink reception.

[0006] In a 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 a 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.

[0007] According to a third aspect, a device for determining spatial domain parameters is provided, including: a determination module for determining 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, wherein the first time domain unit is an SBFD time domain unit; and a communication module for using the spatial domain parameters to perform uplink transmission or downlink reception.

[0008] In a fourth aspect, a spatial domain parameter determination device is provided, including: a sending module, used to send 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.

[0009] 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.

[0010] In the sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the processor is used to determine the spatial domain parameters used for uplink transmission or downlink reception according to whether there is uplink transmission and downlink reception on a first time domain unit, the first time domain unit being an SBFD time domain unit, and the communication interface is used to use the spatial domain parameters to perform uplink transmission or downlink reception.

[0011] 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.

[0012] 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.

[0013] In a 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.

[0014] 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.

[0015] In the eleventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program 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.

[0016] In the twelfth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the computer program / program product 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.

[0017] 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 in 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

[0018] Figure 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application;

[0019] Figure 2 is a schematic flow chart of a method for determining airspace parameters according to an embodiment of the present application;

[0020] Figure 3 is a specific application diagram of the method for determining airspace parameters according to an embodiment of the present application;

[0021] Figure 4 is a schematic flow chart of a method for determining airspace parameters according to an embodiment of the present application;

[0022] Figure 5 is a specific application diagram of the method for determining airspace parameters according to an embodiment of the present application;

[0023] Figure 6 is a specific application diagram of the method for determining airspace parameters according to an embodiment of the present application;

[0024] Figure 7 is a specific application diagram of the method for determining airspace parameters according to an embodiment of the present application;

[0025] Figure 8 is a schematic diagram of the structure of a device for determining airspace parameters according to an embodiment of the present application;

[0026] Fig. 9 is a schematic diagram of the structure of a device for determining airspace parameters according to an embodiment of the present application;

[0027] Fig.10 is a schematic diagram of the structure of a communication device according to an embodiment of the present application;

[0028] Fig.11 is a schematic diagram of the structure of a terminal according to an embodiment of the present application;

[0029] Fig.12 It is a schematic diagram of the structure of a network side device according to an embodiment of the present application. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0031] 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 one type, and the number of objects is not limited, 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 schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0032] The term "indication" in this application can be 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, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

[0033] 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 described technology 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 NR terminology is used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6 th Generation, 6G) communication system.

[0034] Figure 1A block diagram of a wireless communication system applicable to an embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network side device 12. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), an aircraft (flight vehicle), a vehicle-mounted device (Vehicle User Equipment, VUE), a ship-mounted device, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (Personal Computer, PC), a teller machine or a self-service machine and other terminal side devices. 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 referred to as 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 (Wireless Local Area Network, WLAN) access point (Access Point, AS) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc.Among them, the base station may be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B (HNB), a Home Evolved Node B (home evolved Node B), a 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.

[0035] The following is a detailed description of the method for determining the airspace parameters provided in the embodiment of the present application through some embodiments and their application scenarios in combination with the accompanying drawings.

[0036] like Figure 2 As shown, 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.

[0037] S202: The terminal determines a spatial domain parameter used for uplink transmission or downlink reception according to whether there is uplink transmission and downlink reception in a first time domain unit, where the first time domain unit is a subband full-duplex (SBFD) time domain unit.

[0038] The SBFD time domain unit refers to a time domain unit in which both an uplink subband and a downlink subband or a flexible subband exist, or a time domain unit in which both a downlink subband and an uplink subband or a flexible subband exist. The flexible subband refers to a subband that can be scheduled for uplink transmission or downlink reception.

[0039] 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 be one of the following: simultaneously perform uplink transmission and downlink reception; perform only uplink transmission; or perform only downlink reception.

[0040] like Figure 3 As shown, Figure 3 (a) is the subband (SB) and guard interval (GB) configuration of the subband full duplex on the network side, that is, the network configures the time-frequency resources of the uplink subband (UL SB) and the 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 sends the DL channel or signal to the served terminal. Figure 3 (b) is the subband configuration of full-duplex subband on the UE side. The network configures the time-frequency resources of the uplink subband (UL SB) and the downlink subband (DL SB) (or guard interval) to the terminal. The UL transmission of the terminal will cause self-interference to the DL reception. The capabilities of different terminals may be different, so the guard interval may be different.

[0041] 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.

[0042] like Figure 3 As shown, for a terminal supporting simultaneous transmission and reception, when the terminal performs simultaneous transmission and reception, uplink transmission has self-interference on downlink reception, which affects the communication performance of the terminal. At present, a certain spatial domain parameter is used for uplink transmission and downlink reception of the terminal, and a self-interference suppression method is not considered. In order to suppress self-interference, in S202, the terminal determines the spatial domain parameter used for uplink transmission or downlink reception according to whether there is uplink transmission and downlink reception on the first time domain unit, which may include at least one of the following:

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 4) 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.

[0047] 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, that is, the terminal side is pre-configured or indicated with multiple airspace parameters. The network side may also obtain the multiple airspace parameters in advance based on the uplink transmission of the terminal.

[0048] S204: The terminal uses the spatial domain parameters to perform uplink transmission or downlink reception.

[0049] The uplink transmission may include transmitting an uplink channel or signal; and the downlink reception may include receiving a downlink channel or signal.

[0050] The spatial domain 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.

[0051] The method for determining spatial domain parameters provided in the embodiment of the present application is that 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. 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.

[0052] For the above-mentioned improvement of the communication performance of the terminal, for example, the terminal determines the spatial domain parameters in order to reduce self-interference. The spatial domain parameters determined by the terminal can make the self-interference generated by the uplink transmission of the terminal to the downlink reception as low as possible, thereby reducing the self-interference of the terminal. If the terminal has sufficient self-interference suppression capability, the throughput and coverage performance of the terminal can also be improved, and the delay can be reduced.

[0053] The method for determining airspace parameters 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.

[0054] In one example, the uplink transmission includes physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) transmission.

[0055] 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.

[0056] 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 the self-interference of receiving the downlink data.

[0057] The PUSCH transmission may include PUSCH initial transmission or retransmission.

[0058] The PUSCH transmission may be repeated transmission of the 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, 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, and this example may refer to Example 3 below.

[0059] The PUSCH transmission can be repeated transmission of a PUSCH of a configured grant (Configured Grant, CG), 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, the second spatial domain parameter is one of the y spatial domain parameters, the first spatial domain parameter is different from the second spatial domain parameter, and this example can refer to Example 4 below.

[0060] In this example, for repeated transmission of PUSCH indicated by dynamic grant, the network indicates x spatial domain parameters. For a time domain unit where only PUSCH is transmitted, the terminal applies the first spatial domain parameter in x for transmission; for a time domain unit where PUSCH is transmitted, if there is downlink reception at the same time, the terminal applies the second spatial domain parameter in x for transmission.

[0061] For the configuration of authorized PUSCH repeated transmission, the network configures y spatial domain parameters. For the time domain unit where only PUSCH is transmitted, the terminal applies the first spatial domain parameter in y for transmission; for a time domain unit where PUSCH is transmitted, if there is downlink reception at the same time, the terminal applies the second spatial domain parameter in y for transmission.

[0062] In one example, the uplink transmission includes physical uplink control channel (Physical Uplink Control Channel, PUCCH) transmission.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] In this example, for PUCCH repeated transmission indicated by dynamic authorization or configuration, the network indicates z spatial domain parameters. For a time domain unit where only PUCCH is transmitted, the terminal applies the first spatial domain parameter in z for transmission; for a time domain unit where PUCCH is transmitted, if there is downlink reception at the same time, the terminal applies the second spatial domain parameter in z for transmission. This example can refer to the fifth embodiment below.

[0067] Optionally, 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. For details, please refer to the description of Example 5 below.

[0068] In one example, the downlink reception includes physical downlink shared channel (PDSCH) reception.

[0069] 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.

[0070] 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.

[0071] The PDSCH reception may include PDSCH repetition

[0072] The PDSCH reception may be repeated reception of a 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.

[0073] In this example, for repeated reception of PDSCHs indicated and configured by dynamic grant (e.g., SPS PDSCH), the network indicates m spatial domain parameters. For a time domain unit with only PDSCH reception, the terminal applies the third spatial domain parameter reception in m; for a time domain unit with PDSCH reception, if there is an uplink transmission at the same time, the terminal applies the fourth spatial domain parameter reception in m. This example can refer to the sixth embodiment below.

[0074] It should be noted that the above-mentioned first airspace parameter, second airspace parameter, third airspace parameter or fourth airspace 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 airspace parameter (corresponding to the first airspace 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 airspace parameter indicated by the network, and the terminal adopts the second UL airspace parameter (corresponding to the second airspace parameter); in the first time domain unit, there is only downlink reception, and the terminal adopts the first DL airspace parameter (corresponding to the third airspace 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 airspace parameter indicated by the network, and the terminal adopts the second DL airspace parameter (corresponding to the fourth airspace parameter).

[0075] Specifically, for a DL reception that determines a DL spatial domain parameter indicated by a network, only the second UL spatial domain parameter may be adjusted to minimize interference from UL transmission to DL. For a UL transmission that determines a UL spatial domain parameter indicated by a network, only the second DL spatial domain parameter may be adjusted to avoid interference from UL.

[0076] The second UL airspace parameter and the second DL airspace parameter may 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.

[0077] 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 to DL again.

[0078] 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.

[0079] 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 the uplink transmission according to the type of the 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 the 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.

[0080] In this embodiment, in the case of the same uplink transmission and different downlink reception combinations, the spatial domain parameters used by the uplink transmission are different. For example, the network can configure the spatial domain parameters applied respectively when PUSCH transmission and different downlink reception combinations are used. For example, the network can configure: parameter set 1: spatial domain parameters applied when PUSCH and SPS PDSCH are transmitted simultaneously; parameter set 2: spatial domain 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 domain parameters used by the downlink reception are different.

[0081] 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 Embodiment 9 below.

[0082] Combination of the above Figure 2 The method for determining the spatial parameters according to the embodiment of the present application is described in detail. Figure 4 A method for determining airspace parameters according to another embodiment of the present application is described in detail. It can be understood that the interaction between the network side device and the terminal described by the network side device is Figure 2 The descriptions on the terminal side in the methods shown are the same or corresponding, and to avoid repetition, the relevant descriptions are appropriately omitted.

[0083] Figure 4 1 is a schematic diagram of the implementation flow of the method for determining airspace parameters in an embodiment of the present application, which can be applied to network-side devices. Figure 4 As shown, the method 400 includes the following steps.

[0084] 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, and the first time domain unit is an SBFD time domain unit.

[0085] In the method for determining spatial domain parameters provided in the embodiment of the present application, a network side device 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] To illustrate in detail the airspace parameter determination method provided in the embodiments of the present application, several specific embodiments will be described below. The following embodiments can be implemented separately or in combination.

[0091] Embodiment 1

[0092] To simplify the description, the present application embodiment defines the following two full-duplex modes, namely:

[0093] Network full-duplex operation: full-duplex is applied on the network side and half-duplex is applied on the UE side.

[0094] Terminal full-duplex operation: that is, full-duplex is applied on the network side and full-duplex is applied on the UE side.

[0095] 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.

[0096] Full-duplex on the UE side means receiving a DL signal or channel and sending a UL signal or channel simultaneously in one time unit.

[0097] The network full-duplex mode can achieve the purpose of enhancing coverage, reducing transmission delay, and improving resource utilization efficiency. The terminal full-duplex mode can improve DL or UL throughput while achieving the above gains.

[0098] Usually, a guard band is reserved between UL transmission and DL transmission, for example, a guard interval is reserved to achieve frequency isolation and reduce self-interference. Usually, the self-interference elimination capability of the UE is weaker than that of the gNB side. For simultaneous transmission and reception on the UE side, the reserved GB is larger than that on the gNB side, that is, more reserved physical resource blocks (PRBs) are required as guard bands.

[0099] like Figure 3 As shown, Figure 3 (a) is the subband and guard band (GB) configuration of the full-duplex subband on the network side, that is, the network configures the time-frequency resources of the uplink (UL) subband and the downlink (DL) subband (or GB). In the UL subband, the network receives the UL channel or signal of the served terminal, and in the DL subband, the network sends the DL channel or signal to the served terminal. The network DL transmission will cause self-interference to the UL reception.

[0100] Figure 3 (b) is the subband configuration of full-duplex 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.

[0101] Different terminals may have different capabilities, so the GB may be different.

[0102] Embodiment 2

[0103] This embodiment mainly introduces the process of obtaining spatial domain parameters, which corresponds to the following features in the previous embodiments: within a time domain period, the terminal uses different spatial domain parameters to send uplink data.

[0104] 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.

[0105] For the spatial parameter A of the channel or signal used for UL transmission and the spatial parameter B of the channel or signal used for DL ​​reception, the terminal and the base station should obtain relevant information.

[0106] A process for obtaining airspace parameters Figure 5As shown, in a time domain period (such as a beam training period), the network configures the UE to use different spatial domain parameters to send UL channels or signals, and simultaneously performs measurements in the DL subband to measure the self-interference situation. Thus, the UE can measure the self-interference situation of different transmission spatial domain parameters.

[0107] The network may configure at least one CSI report configuration (CSI report config) for the UE, and each configuration may be associated with NZP CSI-RS resources, CSI-IM resources, and NZP CSI-RS interference measurement resources. The network may configure the interference measurement resources to be aligned with the transmission channel or signal time domain, measure the interference through the interference measurement resources, and obtain a channel quality indicator (CQI) report based on the channel measurement resources and the interference measurement resources, thereby determining the self-interference of UL transmission using different beam directions.

[0108] For example, the network configures the UE to periodically send SRS1 and SRS2, and configures the UE to have multiple CSI report configurations, and uses the associated CSI-RS (CSI-IM) for measurement. The UE can report the measured CQI to the network.

[0109] 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.

[0110] At time t2, the UE measures CQI 2 based on CSI-RS1 and CSI-IM1 (based on TCI state 1), reflecting the interference degree of SRS2 (spatial relation info 2) leakage.

[0111] 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.

[0112] At time t4, the UE measures CQI 4 based on CSI-RS2 and CSI-IM2 (based on TCI state 2), reflecting the interference degree of SRS2 (spatial relation info 2) leakage.

[0113] Different CQIs can characterize 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 DL spatial parameters and UL spatial parameters according to the CQI.

[0114] CQI UL, DL airspace parameter pair CQI 1 {TCI state1, spatial relation info 1} CQI 2 {TCI state1, spatial relation info 2} CQI 3 {TCI state2, spatial relation info 1} CQI 4 {TCI state2, spatial relation info 2}

[0115] The DL spatial domain parameter may be a spatial domain parameter associated with an SSB / PBCH block index, a tracking reference signal (TRS) index, etc.

[0116] The UL spatial domain parameter may be a spatial domain parameter associated with the SRS resource, for example, provided by the SRS-ResourceIndicatorIE or PUCCH space related information.

[0117] DL resources may be PDSCH, PDCCH, SSB / PBCH blocks, Channel State Information-Reference Signal (CSI-RS), etc.

[0118] UL resources can be PUSCH, SRS, etc.

[0119] By adopting a similar process, the UL and DL spatial domain parameter pairs at different frequencies can be measured by sending UL resources at different frequencies and receiving DL resources at different frequencies.

[0120] The network configures or indicates to the UE a set of spatial domain parameter pairs for simultaneous full-duplex communication of the UE. When the UE performs full-duplex communication, the spatial domain parameters used for UL and the spatial domain parameters used for DL ​​are selected from the set of spatial domain parameter pairs.

[0121] Embodiment 3

[0122] For dynamically scheduled PUSCH repetition transmissions, the network indicates corresponding x (>1) spatial parameters.

[0123] The network may additionally indicate an SRS resource indicator in the scheduling DCI, which is used to indicate the spatial parameters used for PUSCH repeated transmission when the UE performs UL and DL transmission simultaneously.

[0124] The network may extend the SRS resource indicator to indicate more than one spatial domain parameter. For example, the spatial domain parameter indication field in the scheduling DCI may be defined as Table 1.

[0125] Table 1

[0126]

[0127]

[0128] Optionally, the network may configure the spatial domain parameters to be 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 domain parameters for simultaneous transmission of PUSCH and SPSPDSCH; spatial domain parameters for simultaneous transmission of PUSCH and CSI-RS; spatial domain parameters for simultaneous transmission of PUSCH and PDCCH, etc.

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

[0130] Table 2

[0131]

[0132] Embodiment 4

[0133] For semi-statically configured CG PUSCH, the network can configure y spatial parameters, such as Figure 6 shown.

[0134] For example,

[0135] For UL transmission only:

[0136] srs-ResourceIndicator-1 INTEGER(0..15).

[0137] For UL transmission of full-duplex time domain type on the UE side:

[0138] srs-ResourceIndicator-2 INTEGER(0..15).

[0139] 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:

[0140] Spatial parameters for simultaneous transmission of CG PUSCH and SPS PDSCH:

[0141] srs-ResourceIndicator-2 INTEGER(0..15).

[0142] Spatial parameters for simultaneous transmission of CG PUSCH and CSI-RS:

[0143] srs-ResourceIndicator-3 INTEGER(0..15).

[0144] Spatial parameters for simultaneous transmission of CG PUSCH and PDCCH:

[0145] srs-ResourceIndicator-4 INTEGER(0..15).

[0146] Optionally, the network may configure srs-ResourceIndicator-2 / 3 / 4 to be used for a time domain unit configured as full-duplex on the UE side (in which there may be only UL transmission in this time domain unit), or a time domain unit configured as a full-duplex operation of the UE (in which there are both UL and DL transmissions in this time domain unit).

[0147] Embodiment five:

[0148] 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).

[0149] For UL transmission only:

[0150] PUCCH-SpatialRelationInfo-1 INTEGER(0..15).

[0151] For UL transmission of full-duplex time domain type on the UE side:

[0152] PUCCH-SpatialRelationInfo-2 INTEGER(0..15).

[0153] The network can configure a spatial relationship between a reference RS and PUCCH, and the reference RS can be SSB / CSI-RS / SRS.

[0154] If the reference signal configured by PUCCH-SpatialRelationInfo is an SSB index, the UE sends PUCCH using the same spatial parameters as the received SS / PBCH block, the index of which is determined by the SSB index of the same serving cell, or if servingCellId is provided, it is determined by the serving cell indicated by servingCellId.

[0155] 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.

[0156] If the reference signal configured by PUCCH-SpatialRelationInfo is SRS, the UE transmits PUCCH using the same spatial parameters as for SRS transmission, where SRS is determined by the same serving cell and / or activated UL BWP SRS resource index, or, if servingCellId and / or uplinkBWP are provided, by the serving cell indicated by servingCellId and / or the UL BWP indicated by uplinkBWP.

[0157] 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:

[0158] Spatial parameters for simultaneous transmission of PUCCH and SPS PDSCH:

[0159] PUCCH-SpatialRelationInfo–2.

[0160] Spatial parameters for simultaneous transmission of PUCCH and CSI-RS:

[0161] PUCCH-SpatialRelationInfo–3.

[0162] Spatial parameters for simultaneous transmission of PUCCH and PDCCH:

[0163] PUCCH-SpatialRelationInfo–4.

[0164] Optionally, the network may configure PUCCH-SpatialRelationInfo-2 / 3 to be used as a time domain unit configured as full-duplex on the UE side (in which there may be only UL transmission), or as a time domain unit for the UE to perform full-duplex operation (in which there are both UL and DL transmissions).

[0165] Embodiment 6

[0166] For repeated transmissions of dynamically scheduled PDSCH or SPS PDSCH, the network indicates corresponding x (>1) spatial parameters.

[0167] 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 has only DL transmission and performs UL and DL transmission simultaneously.

[0168] 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.

[0169] Optionally, the network may configure the spatial domain 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 domain parameters for simultaneous transmission of PDSCH and CG PUSCH; spatial domain parameters for simultaneous transmission of PDSCH and SRS; spatial domain parameters for simultaneous transmission of PDSCH and PUCCH; spatial domain parameters for simultaneous transmission of PDSCH and PRACH.

[0170] 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.

[0171] Embodiment 7

[0172] 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 the spatial parameters used by the UE when performing UL and DL transmissions simultaneously.

[0173] 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 UL and DL transmissions simultaneously.

[0174] Embodiment 8

[0175] 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.

[0176] Embodiment 9

[0177] If a UL channel / signal overlaps with more than one DL channel / signal, the UE sends the UL channel / signal according to predefined rules or spatial parameters configured by the network.

[0178] 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.

[0179] If CG PUSCH is transmitted and received simultaneously with SPS PDSCH and CSI-RS, such as Figure 7 As shown, the UE may send using one of the spatial parameters A or B according to a predefined rule, or the UE may send according to an additional spatial parameter C indicated by the network.

[0180] 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.

[0181] 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.

[0182] 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 executing the airspace parameter determination method is taken as an example to illustrate the airspace parameter determination device provided in the embodiment of the present application.

[0183] Figure 8 is a schematic diagram of the structure of an apparatus for determining airspace parameters according to an embodiment of the present application, and the apparatus may correspond to a terminal in other embodiments. Figure 8 As shown, the device 800 includes the following modules.

[0184] The determination module 802 is used to determine 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, and the first time domain unit is a SBFD time domain unit.

[0185] The communication module 804 is configured to perform uplink transmission or downlink reception using the spatial domain parameters.

[0186] In an embodiment of the present application, the device 800 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. 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.

[0187] 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, 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, 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, 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, determine to use the fourth spatial domain parameter to perform downlink reception.

[0188] Optionally, as an embodiment, the uplink transmission includes PUSCH transmission, and the communication module 804 is used to perform the PUSCH transmission in the first time domain unit using the first spatial domain parameter; or to perform the PUSCH transmission in the first time domain unit using the second spatial domain parameter; 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.

[0189] 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.

[0190] Optionally, as an embodiment, 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.

[0191] Optionally, as an embodiment, the downlink reception includes PDSCH reception, and the communication module 804 is used to perform the PDSCH reception in the first time domain unit using the third spatial domain parameter; or to perform the PDSCH reception in the first time domain unit using the fourth spatial domain parameter; wherein the PDSCH reception is a PDSCH repeated reception indicated or configured by dynamic authorization, 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.

[0192] 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.

[0193] 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.

[0194] 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 by 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 by 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.

[0195] Optionally, as an embodiment, the communication module 804 is further used for: if one uplink transmission overlaps with more than one downlink reception, performing 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, performing downlink reception according to predefined spatial parameters or spatial parameters configured by the network.

[0196] 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.

[0197] 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.

[0198] The airspace parameter determination device in the embodiment of the present application may 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 a chip. The electronic device may be a terminal, or may be another device other than a terminal. Exemplarily, the terminal may include but is not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0199] Fig. 9 is a schematic diagram of the structure of an apparatus for determining airspace parameters according to an embodiment of the present application, and the apparatus may correspond to a network side device in other embodiments. Fig. 9 As shown, the device 900 includes the following modules.

[0200] 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. The first time domain unit is an SBFD time domain unit.

[0201] Optionally, as an embodiment, the device 900 also includes a receiving module and the like.

[0202] In an embodiment of the present application, a sending module sends indication information, wherein 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.

[0203] 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 parameters 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 parameters 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 parameters 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 parameters to perform downlink reception.

[0204] 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.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] The spatial parameter determination device provided in the embodiment of the present application can achieve Figures 2 to 4The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0209] Optional, such as Fig.10 As shown, the embodiment of the present application further provides a communication device 1000, including a processor 1001 and a memory 1002, and 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 airspace parameter determination method embodiment, 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 airspace parameter determination method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0210] The embodiment of the present application also provides a terminal, including a processor and a communication interface, the processor is used to determine 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, 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. 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 this terminal embodiment, and can achieve the same technical effect. Specifically, Fig.11 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0211] 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 a processor 1110.

[0212] Those skilled in the art will appreciate that the terminal 1100 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 1110 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig.11 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0213] It should be understood that in the embodiment of the present application, the input unit 1104 may include a graphics processor (Graphics Processing Unit, GPU) 11041 and a microphone 11042, and the graphics processor 11041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the 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.

[0214] In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 1101 can transmit the data to the processor 1110 for processing; in addition, the RF unit 1101 can send uplink data to the network side device. Generally, the RF unit 1101 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0215] 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, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), 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 a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory 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.

[0216] The processor 1110 may include one or more processing units; optionally, the processor 1110 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1110.

[0217] Among them, the processor 1110 can be used to determine 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, 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.

[0218] 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 in 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.

[0219] 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 effect. To avoid repetition, it will not be repeated here.

[0220] The embodiment of the present application also provides a network side device, including a processor and a communication interface, the communication interface is used to send indication information, the indication information is used to indicate whether there is uplink transmission and downlink reception in the first time domain unit of the terminal, 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. This network side device embodiment corresponds to the above-mentioned network side device method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to the network side device embodiment, and can achieve the same technical effect.

[0221] The present application embodiment also provides a network side device. Fig.12 As shown, 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 through 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 sent and sends it to the radio frequency device 122. The radio frequency device 122 processes the received information and sends it out through the antenna 121.

[0222] 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.

[0223] The baseband device 123 may include, for example, at least one baseband board on which a plurality of chips are arranged. Fig.12 As shown, 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 to execute the network device operations shown in the above method embodiment.

[0224] The network side device may further include a network interface 126, which is, for example, a Common Public Radio Interface (CPRI).

[0225] The network side device 1200 of the embodiment of the present application further includes: instructions or programs stored in the memory 125 and executable on the processor 124, and the processor 124 calls the instructions or programs in the memory 125 to execute Fig. 9 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0226] 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, each process of the above-mentioned spatial parameter determination method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0227] The processor is the processor in the terminal described in the above embodiment. The readable storage medium may be non-volatile or non-transient. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0228] 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 airspace parameter determination method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0229] 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.

[0230] The 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 airspace parameter determination method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0231] 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 as described above, and the network side device can be used to execute the steps of the airspace parameter determination method as described above.

[0232] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment 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 reverse 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.

[0233] Through the description of the above implementation methods, 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 hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

[0234] 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 the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims

1. A method for determining spatial parameters, characterized in that: include: 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, characterized in that: 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, characterized in that 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, characterized in that: 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, characterized in that 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, characterized in that 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: include: 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, characterized in that 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, characterized in that 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, characterized in that 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, characterized in that 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 a spatial parameter, characterized in that: include: 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 a spatial parameter, characterized in that: include: 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, characterized in that: The method comprises 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, characterized in that: The method comprises 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, characterized in that: 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.

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