TCI state determination method and device, terminal and network side equipment

Abstract

The embodiment of the invention discloses a TCI state determination method and device, a terminal and network side equipment, and belongs to the technical field of communication. The TCI state determination method provided by the embodiment of the invention comprises the following steps: the terminal receives a first command; and the terminal determines the number of TCIs which can be applied by a target resource according to the first command.

Description

[0001] This application is a divisional application of Chinese patent application No. 202110808717.9, filed on July 16, 2021, entitled "TCI Status Determination Method, Apparatus, Terminal and Network Side Equipment". Technical Field

[0002] This application belongs to the field of communication technology, and specifically relates to a method, apparatus, terminal and network-side device for determining the state of Transmission Configuration Indication (TCI). Background Technology

[0003] New Radio (NR) supports multi-TRP / multi-panel scenarios to increase transmission reliability and throughput performance. In the downlink of a multi-TRP scenario, the terminal can receive the same or different data from multiple TRPs; in the uplink of a multi-TRP scenario, the terminal can send the same or different data to multiple TRPs.

[0004] To improve beam management efficiency and reduce beam update latency, a unified TCI architecture can be adopted, where uplink and downlink transmissions use a unified set of beam indication information. However, the unified TCI architecture only considers scenarios with a single TRP and does not account for multiple TRPs. As a result, the terminal cannot determine whether the target resource is transmitted via a single TRP or multiple TRPs, thus failing to transmit the target resource and affecting communication effectiveness. Summary of the Invention

[0005] This application provides a TCI status determination method, apparatus, terminal, and network-side device, which can solve the problem that the target resource cannot be transmitted due to the terminal's inability to determine whether the target resource is transmitted via a single TRP or multiple TRP, thus affecting the effectiveness of communication.

[0006] In a first aspect, a method for determining TCI status is provided, comprising: a terminal receiving a first command; the terminal determining, based on the first command, the number of TCI statuses that can be applied to the target resource.

[0007] Secondly, a TCI state determination method is provided, comprising: a network-side device sending a first command, wherein the first command is used by the terminal to determine the number of TCI states that can be applied to the target resource.

[0008] Thirdly, a TCI state determination device is provided, comprising: a receiving module for receiving a first command; and a determining module for determining, based on the first command, the number of TCI states that can be applied to a target resource.

[0009] Fourthly, a TCI state determination device is provided, comprising: a sending module for sending a first command, wherein the first command is used by a terminal to determine the number of TCI states that can be applied to a target resource.

[0010] Fifthly, a terminal is provided, the terminal including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, the program or instructions implementing the method as described in the first aspect when executed by the processor.

[0011] In a sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is used to determine the number of TCI states that can be applied to a target resource according to a first command, and the communication interface is used to receive the first command.

[0012] In a seventh aspect, a network-side device is provided, the network-side device including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the method as described in the second aspect.

[0013] Eighthly, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to send a first command, the first command being used by a terminal to determine the number of TCI states that can be applied to a target resource.

[0014] A ninth aspect provides a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the method as described in the first aspect, or implement the method as described in the second aspect.

[0015] In a tenth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0016] Eleventhly, a computer program / program product is provided, the computer program / program product being stored in a non-transient storage medium, the program / program product being executed by at least one processor to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0017] In this embodiment, the terminal determines the number of TCI states that the target resource can apply based on the received first command, so that the terminal can determine whether the target resource can be transmitted with a single TRP or multiple TRPs, which is beneficial to realize flexible transmission of the target resource and improve communication effectiveness. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a wireless communication system according to an embodiment of this application; Figure 2 This is a schematic flowchart of a TCI status determination method according to an embodiment of this application; Figure 3 This is a schematic flowchart of a TCI status determination method according to an embodiment of this application; Figure 4 This is a schematic diagram of the TCI state determination device according to an embodiment of this application; Figure 5 This is a schematic diagram of the TCI state determination device according to an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a communication device according to an embodiment of this application; Figure 7 This is a schematic diagram of the terminal structure according to an embodiment of this application; Figure 8 This is a schematic diagram of the structure of a network-side device according to an embodiment of this application. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0020] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, 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), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used in the systems and radio technologies mentioned above, as well as in other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and NR terminology is used in most of the following description. These technologies can also be applied to applications beyond NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0022] Figure 1This diagram illustrates a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. In this context, terminal 11 can also be referred to as a terminal device or user equipment (UE). Terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, game consoles, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side device 12 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), next-generation node B (gNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0023] The following description, in conjunction with the accompanying drawings, details the method, apparatus, terminal, and network-side device for determining the Transmission Configuration Indication (TCI) status provided in this application, through some embodiments and application scenarios.

[0024] like Figure 2 As shown, this application embodiment provides a TCI status determination method 200, which can be executed by a terminal. In other words, the method can be executed by software or hardware installed on the terminal, and the method includes the following steps.

[0025] S202: The terminal receives the first command.

[0026] In this embodiment, the first command can be a Radio Resource Control (RRC) command, a Media Access Control-Control Element (MAC CE) command, or a Downlink Control Information (DCI) command, etc.

[0027] The first command can be used to indicate the TCI states that the target resource can apply, and these TCI states can indicate or represent the (maximum) number of TCI states that the target resource can apply. For example, the first command can directly indicate the number of TCI states that the target resource can apply; or, for example, the first command has multiple indication fields, each corresponding to a TRP, and the terminal can determine the number of TCI states that the target resource can apply by using the indication values ​​of these indication fields (e.g., indicating whether a TRP is available or unavailable).

[0028] In this embodiment, when the number of TCI states that the target resource can apply is equal to 1, it usually means that the target resource can be a single TRP transmission; when the number of TCI states that the target resource can apply is greater than 1, it usually means that the target resource can be a multi-TRP (or MTRP) transmission. Typically, one TCI state can correspond to one TRP.

[0029] Optionally, the first command can also be used to indicate the number of TCI states that can be applied to the target resource scheduled by a scheduling command of different formats (such as DCI format). For example, the first command indicates that the number of TCI states that can be applied to the target resource scheduled by a DCI in a first DCI format is equal to 1; the first command indicates that the number of TCI states that can be applied to the target resource scheduled by a DCI in a second DCI format is greater than 1; and so on.

[0030] Optionally, the first command is associated with a target resource. When the target resource is a Control Resource Set (CORESET), the granularity of the association can be per CORESET; when the target resource is a Physical Uplink Control Channel (PUCCH), the granularity of the association can be per PUCCH resource. This association can be explicitly configured in the target resource configuration, or the terminal can implicitly derive the first command from other configurations of the target resource.

[0031] By establishing the association between the first command and the target resource, the terminal can determine the target resource by combining the TCI status indicated by the first command with the aforementioned association, and thus determine the number of TCI states that can be applied to the target resource.

[0032] S204: The terminal determines the number of TCI states that can be applied to the target resource based on the first command.

[0033] The target resources mentioned in the various embodiments of this application may include at least one of the following: Physical Downlink Control Channel (PDCCH), CORESET, Search Space (SS), Physical Downlink Shared Channel (PDSCH), PUCCH, Physical Uplink Shared Channel (PUSCH), Channel State Information-Reference Signal (CSI-RS), Sounding Reference Signal (SRS) resources, and SRS resource set.

[0034] In this embodiment, the terminal can determine that the target resource can apply one TCI state, which usually means that the target resource can be a single TRP transmission; or, the terminal can also determine that the target resource can apply multiple TCI states, which usually means that the target resource can be a multi-TRP (MTRP) transmission.

[0035] Optionally, the first command can also be used to indicate whether one or more TCI states can be applied to multiple TRPs. In this way, the terminal can also determine whether the TCI state can be applied to multiple TRPs based on the first command.

[0036] The TCI state determination method provided in this application embodiment allows the terminal to determine the number of TCI states that can be applied to the target resource based on the received first command. This enables the terminal to determine whether the target resource can be transmitted via a single TRP or multiple TRPs, which is beneficial for achieving flexible transmission of the target resource and improving communication effectiveness.

[0037] The TCI state determination method provided in this application can be applied to a unified TCI architecture, flexibly indicating multi-TRP or single-TRP operations for various channels or signals (i.e., target resources). The unified TCI architecture means that the terminal uses a unified set of beam indication information for uplink and downlink transmissions. For example, one approach is to use a single beam for both uplink and downlink. When the DCI indicates a TCI state, all uplink and downlink channels and / or signals apply that TCI state (referred to as a joint TCI state). Another approach is for the DCI to indicate a pair of beams, i.e., two TCI states, one applied to the downlink channel or signal and the other to the uplink channel or signal; these two TCI states can be called separate TCI states.

[0038] The joint indication mentioned in various embodiments of this application may be a unified set of beam indication information (such as a unified joint TCI state) used for uplink and downlink transmission of the terminal; the separate indication mentioned in various embodiments of this application may be a DCI indication of a pair of beams, i.e. two separate TCI states, one applied to the downlink channel or signal and the other applied to the uplink channel or signal.

[0039] In a multi-TRP scenario, a terminal or target resource can be indicated with multiple joint TCI states, each joint TCI state corresponding to a TRP; a terminal or target resource can also be indicated with multiple separate TCI states, each separate TCI state corresponding to a TRP.

[0040] Optionally, based on embodiment 200, if the terminal determines that the target resource can apply one TCI state, the method further includes: the terminal receiving a second command; the terminal determining the TCI state of the target resource transmission application according to the second command.

[0041] In this embodiment, the second command can be used to indicate the TCI status of the target resource transfer application, and the second command can be a DCI command.

[0042] In one example, the second command indicates one or more joint TCI states, and determining the TCI state of the target resource transport application according to the second command includes: if the second command indicates one joint TCI state, taking the one joint TCI state as the TCI state of the target resource transport application; if the second command indicates multiple joint TCI states, taking the first target joint TCI state among the multiple joint TCI states as the TCI state of the target resource transport application.

[0043] In this example, the first target joint TCI state can be the first joint TCI state or the last joint TCI state among multiple joint TCI states indicated by the second command.

[0044] In another example, the second command indicates multiple downlink TCI states and / or multiple uplink TCI states, wherein determining the TCI state of the target resource transmission application according to the second command includes: if the target resource is a downlink resource, taking the first target downlink TCI state among the multiple downlink TCI states as the TCI state of the target resource transmission application; and if the target resource is an uplink resource, taking the first target downlink TCI state among the multiple uplink TCI states as the TCI state of the target resource transmission application.

[0045] In this example, the first target downlink TCI state can be the first downlink TCI state or the last downlink TCI state among multiple downlink TCI states indicated by the second command; the first target uplink TCI state can be the first uplink TCI state or the last uplink TCI state among multiple uplink TCI states indicated by the second command.

[0046] The downlink resources mentioned in this example can be resources sent from the network-side device to the terminal, such as PDCCH resources, PDSCH resources, and CSI-RS resources; the uplink resources mentioned in this example can be resources sent from the terminal to the network-side device, such as PUCCH resources, PUSCH resources, SRS resources, and SRS resource sets.

[0047] Optionally, based on embodiment 200, if the terminal determines that the target resource can apply multiple TCI states, the method further includes: the terminal receiving a third command; and determining the TCI state of the target resource transmission application according to the third command.

[0048] In this embodiment, the third command can be used to schedule the transmission of the target resource. The third command can be a DCI command. Optionally, the second command and the third command can be carried by the same DCI.

[0049] Optionally, the third command includes a first indication field, the first indication field being used to indicate one of the following from a plurality of TCI states in which the target resource is indicated: 1) One TCI state of the target resource transmission application.

[0050] 2) Multiple TCI states of the target resource transmission application.

[0051] 3) When the target resource transmission application has multiple TCI states, the order of the multiple TCI states, i.e., the sequential order.

[0052] In one example, the first indicator field is used to indicate 1) above; in another example, the first indicator field is used to indicate 2) and 3) above; in yet another example, the first indicator field is used to indicate 2) above; and in yet another example, the first indicator field is used to indicate 3) above.

[0053] This embodiment, through the aforementioned first indication field, facilitates flexible switching between single TRP and multiple TRPs, improving the flexibility of target resource transmission. For example, although the first command indicates that the target resource can apply multiple TRPs, i.e., it can be applied in a multi-TRP scenario, the network-side device can subsequently use the first indication field of the aforementioned third command to indicate one TCI state of the target resource transmission application mentioned in 1), thus achieving a switch from multiple TRPs to a single TRP. Conversely, although the first command indicates that the target resource can apply one TRP, i.e., it can be applied in a single-TRP scenario, the network-side device can subsequently use the first indication field of the aforementioned third command to indicate 2) and / or 3), thus achieving a switch from a single TRP to multiple TRPs.

[0054] In one example, the first indication field included in the third command can be 1 bit, where 0 indicates that the target resource transmission uses the first of the multiple TCI states indicated by the target resource, and 1 indicates that multiple TCI states are used simultaneously.

[0055] In one example, the third command may include a first indication field that can be 2 bits, where 00 indicates the first TCI state among multiple TCI states indicated by the target resource transmission application; 01 indicates the second TCI state among multiple TCI states indicated by the target resource transmission application; 10 indicates both the first and second TCI states indicated by the target resource transmission application; and 11 indicates both the second and first TCI states indicated by the target resource transmission application.

[0056] The multiple TCI states indicated for the target resource mentioned above can be the multiple TCI states indicated for the target resource by the second command. Optionally, the second command and the third command can be carried by the same DCI, and the third command can be used to schedule the transmission of the target resource. In addition, the transmission of the target resource applies the first TCI state and the second TCI state indicated for the target resource. For example, if the target resource is a PUSCH, which includes four transmissions in time slots 1, 2, 3, and 4, the PUSCH transmissions in time slots 1 and 3 can use the first TCI state, and the PUSCH transmissions in time slots 2 and 4 can use the second TCI state; or, the PUSCH transmissions in time slots 1 and 2 can use the first TCI state, and the PUSCH transmissions in time slots 3 and 4 can use the second TCI state, and so on.

[0057] Optionally, the method further includes: the terminal determining that the third command includes the first indication field under at least one of the following conditions: 1) The higher-level signaling configuration of the third command includes the first indication field, for example, the RRC signaling configuration of whether the first indication field exists.

[0058] 2) The number of TCI states that can be applied to the target resource as determined by the first command is greater than 1. It is understood that in other embodiments, if the number of TCI states that can be applied to the target resource as determined by the first command is equal to 1, the terminal can determine that the third command does not include the first indication field. This embodiment is beneficial for the terminal to determine the size of the third command, which is beneficial for the successful demodulation of the third command and improves communication efficiency.

[0059] Optionally, after receiving the third command, the terminal determines the TCI state of the target resource transmission application according to the third command by: if the format of the third command is a first format, taking the first target TCI state in the TCI state indicated by the target resource as the TCI state of the target resource transmission application.

[0060] The TCI status indicated for the target resource mentioned here could be the TCI status indicated for the target resource by the second command.

[0061] In this embodiment, for example, if the third command is DCI format 1_0 or DCI format 0_0, the scheduled target resource can only use a preset TCI state, which can be the first TCI state among multiple TCI states indicated to the terminal.

[0062] Optionally, based on embodiment 200, when the terminal determines that the target resource can apply multiple TCI states, the terminal may also receive a second command, the second command indicating multiple TCI states to the terminal or the target resource. When it is determined that the target resource can apply multiple TCI states, embodiment 200 further includes at least one of the following: 1) If the target resource is a PDCCH, determine the TCI state of the PDCCH transmission application from among the multiple TCI states indicated by the second command, based on the identifier of the search space associated with the PDCCH.

[0063] 2) If the target resource is PDCCH, determine the TCI state of the PDCCH transmission application from the multiple TCI states indicated by the second command based on the identifier of the control resource set associated with the search space associated with the PDCCH.

[0064] Optionally, the plurality of TCI states indicated by the second command include a first TCI state and a second TCI state, and the search space includes a first search space and a second search space. Determining the TCI state of the PDCCH transmission application from the plurality of TCI states indicated by the second command mentioned in 1) above includes: the PDCCH transmitted through the first search space applies the first TCI state, and the PDCCH transmitted through the second search space applies the second TCI state. Optionally, the plurality of TCI states indicated by the second command include a first TCI state and a second TCI state, and the control resource set includes a first control resource set and a second control resource set. Determining the TCI state of the PDCCH transmission application from the plurality of TCI states indicated by the second command as mentioned in 2) above includes: applying the first TCI state to the PDCCH transmitted through the first control resource set, and applying the second TCI state to the PDCCH transmitted through the second control resource set.

[0065] For example, in this embodiment, when the second command indicates two joint TCI states: when the target resource is PDCCH, in the associated search space, the smaller search space is identified by the first joint TCI state, and the larger search space is identified by the second joint TCI state. Alternatively, the smaller search space associated with the CORESET is identified by the first joint TCI state, and the larger search space is identified by the second joint TCI state.

[0066] In this embodiment, the association between the search space and the PDCCH can be indicated by RRC signaling.

[0067] For example, in this embodiment, when the second command indicates two downlink (DL) TCI states and two uplink (UL) TCI states: when the target resource is a PDCCH, in the associated search space, the smaller search space is identified by the first downlink TCI state, and the larger search space is identified by the second downlink TCI state. Alternatively, the CORESET associated with the search space is identified by the smaller search space by the first downlink TCI state, and the CORESET is identified by the larger search space by the second downlink TCI state.

[0068] Optionally, based on embodiment 200, when the terminal determines that the target resource can apply multiple TCI states, the terminal may also receive a second command, the second command indicating multiple TCI states to the terminal or the target resource. When it is determined that the target resource can apply multiple TCI states, the method further includes at least one of the following: 1) If the target resource is PUSCH and the SRS resource set used for the PUSCH transmission is associated with CSI-RS, determine the TCI state of the CSI-RS transmission application from multiple TCI states indicated by the second command based on the identifier of the SRS resource set.

[0069] 2) If the target resource is PUSCH, determine the TCI state of the SRS resource set transmission application from multiple TCI states indicated by the second command according to the identifier of the SRS resource set; wherein the SRS resource set is used for the PUSCH transmission.

[0070] Optionally, the plurality of TCI states indicated by the second command include a first TCI state and a second TCI state, and the SRS resource set includes a first SRS resource set and a second SRS resource set; the determination of the TCI state of the CSI-RS transmission application from the plurality of TCI states indicated by the second command based on the identifier of the SRS resource set mentioned in 1) above includes: the CSI-RS associated with the first SRS resource set applies the first TCI state, and the CSI-RS associated with the second SRS resource set applies the second TCI state.

[0071] Optionally, the multiple TCI states indicated by the second command include a first TCI state and a second TCI state, and the SRS resource set includes a first SRS resource set and a second SRS resource set; the determination of the TCI state of the SRS resource set transmission application from the multiple TCI states indicated by the second command based on the identifier of the SRS resource set mentioned in 2) above includes: the first SRS resource set applies the first TCI state, and the second SRS resource set applies the second TCI state.

[0072] For example, in this embodiment, when the second command indicates two joint TCI states: if the target resource is PUSCH and the SRS resource set used for PUSCH transmission is associated with a CSI-RS, the CSI-RS associated with multiple SRS resource sets shall apply multiple TCI states respectively. The CSI-RS associated with the SRS resource set with the smaller SRS resource set identifier shall apply the first joint TCI state, and the CSI-RS associated with the SRS resource set with the larger SRS resource set identifier shall apply the second joint TCI state.

[0073] For example, in this embodiment, when the second command indicates two joint TCI states: the target resource is PUSCH, and multiple SRS resource sets used for PUSCH transmission apply multiple TCI states respectively, the SRS resources in the smaller SRS resource set apply the first joint TCI state, and the SRS resources in the larger SRS resource set apply the second joint TCI state.

[0074] For example, in this embodiment, when the second command indicates two downlink (DL) TCI states and two uplink (UL) TCI states: If the target resource is a PUSCH, and the SRS resource set used for PUSCH transmission is associated with a CSI-RS, then the CSI-RS associated with multiple SRS resource sets apply multiple downlink TCI states respectively. The CSI-RS associated with the SRS resource set with the smaller SRS resource set identifier applies the first downlink TCI state, and the CSI-RS associated with the SRS resource set with the larger SRS resource set identifier applies the second downlink TCI state. For example, in this embodiment, when the second command indicates two downlink (DL) TCI states and two uplink (UL) TCI states: If the target resource is a PUSCH, and the multiple SRS resource sets used for PUSCH transmission apply multiple TCI states respectively, the SRS resources in the SRS resource set with the smaller SRS resource set identifier apply the first uplink TCI state, and the SRS resources in the SRS resource set with the larger SRS resource set identifier apply the second uplink TCI state.

[0075] It should be noted that the first TCI state and the second TCI state mentioned in the above embodiments can be the first TCI state and the second TCI state in the code point information, or they can be the first TCI state and the second TCI state after being sorted according to the size (or size) of the TCI state identifier.

[0076] Similarly, the first joint TCI state and the second joint TCI state, the first uplink TCI state and the second uplink TCI state, the first downlink TCI state and the second downlink TCI state mentioned in the above embodiments can also be distinguished according to the order in the code point information, or according to the size of the TCI state identifier.

[0077] As mentioned in previous embodiments, when a terminal determines that the target resource can apply multiple TCI states, the terminal receives a third command, which is used to schedule the target resource; and determines the TCI state of the target resource transmission application based on the third command.

[0078] Optionally, before the terminal receives the third command, the method further includes: determining the size of the third command based on the second command; the second command has been described in the previous embodiments, and the second command is used to determine the TCI state of the target resource transmission application; the third command is used to schedule the target resource transmission, and the second command and the third command in this embodiment can be two independent signaling commands.

[0079] The aforementioned determination of the size of the third command based on the second command includes: determining at least one of the following based on the second command: whether the third command has a second indicator field; the number of second indicator fields in the third command; and the bit length (or number of bits) of the second indicator field in the third command.

[0080] Optionally, the second indication field includes at least one of the following: an SRS Resource Indicator (SRI) field, a Transmitted Precoding Matrix Indicator (TPMI) field, a Transmit Power Control (TPC) field, a Phase Tracking Reference Signal (PTRS)-Demodulation Reference Signal (DMRS) association field, and a dynamic switching indication field (see the first indication field included in the third command described in the previous embodiments for details).

[0081] The above embodiments enable the terminal to determine the size of the third command, which is beneficial for the successful demodulation of the third command and improves communication efficiency.

[0082] Optionally, the methods in the preceding embodiments further include the following step: the terminal receives a fourth command, the fourth command being used to activate the TCI state of the target resource transmission application. Optionally, the fourth command may be a MAC CE command.

[0083] In this embodiment, the fourth command (such as a MAC CE command) can be received before the second command (such as a DCI command). Optionally, the fourth command and the first command can be carried by the same MAC CE command, or the fourth command and the first command can be two independent commands, with the terminal receiving the first command first and then the fourth command.

[0084] In this embodiment, the method further includes: the terminal receiving a fifth command, the fifth command indicating at least one of the following: a resource pool of the TCI state, the resource pool may include multiple TCI states; a mode of the TCI state, wherein the mode of the TCI state includes a joint indication or a separate indication. Optionally, the fifth command may be received before the fourth command.

[0085] The joint indication mentioned in this embodiment can be a unified set of beam indication information (such as a unified joint TCI state) used for uplink and downlink transmission of the terminal; the separate indication mentioned in this embodiment can be a DCI indication of a pair of beams, that is, two TCI states, one applied to the downlink channel or signal and the other applied to the uplink channel or signal.

[0086] Optionally, in a scenario with multiple TRPs, if there are two TRPs, the above TCI state modes specifically include at least one of the following: 1) The two TRPs correspond to the same entity and are both joint indications; 2) The two TRPs correspond to the same entity and are both separate indications; 3) The two TRPs correspond to different entities, with the first being a joint indication and the second being a separate indication; 4) The two TRPs correspond to different entities, with the first being a separate indication and the second being a joint indication.

[0087] Optionally, the resource pool of the TCI state and the mode of the TCI state are associated with the Control Resource Set Pool Index (CORESETPoolIndex) (i.e., associated with the TRP), and / or, the resource pool of the TCI state is associated with the mode of the TCI state.

[0088] For example, the TCI state associated with the code point corresponding to the fourth command is TRP1, which corresponds to the TCI state resource pool configured earlier and the TCI state indication mode configured earlier; the TCI state associated with the code point corresponding to the fourth command is TRP2, which corresponds to the TCI state resource pool configured later and the TCI state indication mode configured later.

[0089] Optionally, the mode indicating the TCI status and / or the TCI status resource pool association is associated with the DCI format.

[0090] Optionally, the fourth command includes code point information, which indicates the TCI state activated by the code point information, and the code point information includes at least one of the following: 1) The identifier of the TCI state selected from the resource pool of TCI states.

[0091] 2) A marker used to distinguish between upward and downward traffic.

[0092] 3) An identifier used to distinguish the TCI state to which the TCI state belongs, with one TCI state group corresponding to one TRP.

[0093] 4) The mode of the TCI state, wherein the mode of the TCI state includes a combined indication or a separated indication. For example, a 2-bit indication: a combined indication, a downlink separated indication, or an uplink separated indication, etc.

[0094] Optionally, after the terminal receives the fourth command (such as MAC CE), the method further includes: the terminal receiving a second command (such as DCI); wherein the second command is used to determine the TCI status of the target resource transmission application, and the TCI field in the second command corresponds to the target code point in the fourth command, so that the terminal can obtain the TCI status associated with the target resource transmission.

[0095] Optionally, the second command includes a TCI field, and one TCI field corresponds to a target code point in one of the fourth commands.

[0096] Optionally, the second command includes a TCI field, and one TCI field corresponds to a target code point in multiple (e.g., two) fourth commands. Optionally, the indication modes of the TCI states activated by the multiple fourth commands are different.

[0097] Optionally, the second command includes multiple TCI fields, each of which corresponds to a target code point in one of the fourth commands. For example, the second command includes two TCI fields, each value of which maps to a code point in one of the fourth commands.

[0098] To explain in detail the TCI status determination method provided in the embodiments of this application, the following will be described in conjunction with several specific embodiments.

[0099] Example 1 In this embodiment, the network side configures whether the target resource transmission scheduled by DCI format 1_1 / 1_2 / 0_1 / 0_2 (corresponding to the third command in the previous embodiment) applies two TCI states simultaneously. When the network side configures DCI format 1_1 to use two TCI states and DCI 1_2 to use one TCI state, the PDSCH scheduled by DCI format 1_1 can use two TCI states simultaneously, while the PDSCH scheduled by DCI format 1_2 can only use one TCI state.

[0100] Example 2 In this embodiment, the higher-layer signaling (corresponding to the first command in the previous embodiment) configures the PDSCH transmission to be associated with only one TCI state, and the PUSCH transmission to be associated with two TCI states.

[0101] When the DCI (corresponding to the second command in the previous embodiment) indicates two TCI states, the PDSCH transmission applies the first TCI state, and the TCI state applied by the PUSCH transmission is indicated by the dynamic switching indication field in the DCI (corresponding to the indication field in the third command in the previous embodiment, the third command and the second command are carried by the same DCI): 00 indicates the application of the first TCI state, 01 indicates the application of the second TCI state, 10 indicates the application of both TCI states, and transmission is performed in the order of the first and second TCI states. 11 indicates the application of both TCI states, and transmission is performed in the order of the second and first TCI states.

[0102] Example 3 In this embodiment, the CORESET (corresponding to the target resource in the previous embodiment) is configured to be associated with a command (corresponding to the first command in the previous embodiment), which indicates whether the CORESET adopts one TCI state or two TCI states.

[0103] The above combination Figure 2 The TCI state determination method according to embodiments of this application is described in detail. The following will combine... Figure 3 A detailed description of a TCI state determination method according to another embodiment of this application is provided. It will be understood that the interaction between the network-side device and the terminal, as described from the perspective of the network-side device, is... Figure 2 The terminal-side descriptions in the methods shown are the same; to avoid repetition, relevant descriptions have been omitted as appropriate.

[0104] Figure 3 This is a schematic diagram illustrating the implementation flow of the TCI state determination method according to an embodiment of this application, which can be applied to network-side devices. For example... Figure 3 As shown, the method 300 includes the following steps.

[0105] S302: The network-side device sends a first command, which is used by the terminal to determine the number of TCI states that can be applied to the target resource.

[0106] In this embodiment of the application, the network-side device sends a first command, which is used by the terminal to determine the number of TCI states that the target resource can apply, so that the terminal can determine whether the target resource can be transmitted with a single TRP or multiple TRPs, which is beneficial to realize flexible transmission of the target resource and improve communication effectiveness.

[0107] Optionally, as an embodiment, the first command is used by the terminal to determine that the target resource can apply a TCI state, and the method further includes: the network-side device sending a second command, the second command being used by the terminal to determine the TCI state applied to the transmission of the target resource.

[0108] Optionally, as an embodiment, the first command is used by the terminal to determine that the target resource can apply multiple TCI states, and the method further includes: the network-side device sending a third command, the third command being used to schedule the target resource, and the third command being used by the terminal to determine the TCI state of the target resource transmission application.

[0109] Optionally, as an embodiment, the third command includes an indication field for indicating one of the following from a plurality of TCI states in which the target resource is indicated: one TCI state of the target resource transmission application; a plurality of TCI states of the target resource transmission application; or, in the case of a plurality of TCI states of the target resource transmission application, the order of the plurality of TCI states.

[0110] Optionally, as an embodiment, the method further includes: the network-side device sending a fourth command, the fourth command being used to activate the TCI state of the target resource transmission application.

[0111] Optionally, as an embodiment, the method further includes: the network-side device sending a fifth command, the fifth command being used to indicate at least one of the following: the resource pool of the TCI state; the mode of the TCI state, wherein the mode of the TCI state includes a combined indication or a separate indication.

[0112] Optionally, as an embodiment, after the network-side device sends the fourth command, the method further includes: the network-side device sending a second command, the second command being used by the terminal to determine the TCI status of the target resource transmission application, wherein the TCI field in the second command corresponds to the target code point in the fourth command.

[0113] Optionally, as an embodiment, the first command satisfies at least one of the following: the first command is used to indicate the maximum number of TCI states that the target resource can apply; the first command is used to indicate the TCI states that the target resource can apply as scheduled by a third command of different formats; the first command is associated with the target resource.

[0114] It should be noted that the TCI status determination method provided in this application embodiment can be executed by a TCI status determination device, or by a control module within the TCI status determination device for executing the TCI status determination method. This application embodiment uses the execution of the TCI status determination method by a TCI status determination device as an example to illustrate the TCI status determination device provided in this application embodiment.

[0115] Figure 4 This is a schematic diagram of the TCI state determination device according to an embodiment of this application. This device may correspond to a terminal in other embodiments. Figure 4 As shown, the device 400 includes the following modules.

[0116] The receiving module 402 can be used to receive the first command.

[0117] The determination module 404 can be used to determine the number of TCI states that can be applied to the target resource based on the first command.

[0118] In this embodiment of the application, the device 400 determines the number of TCI states that the target resource can apply based on the received first command, so that the device 400 can determine whether the target resource can be transmitted with a single TRP or multiple TRPs, which is beneficial to realize flexible transmission of the target resource and improve communication effectiveness.

[0119] Optionally, as an embodiment, if it is determined that the target resource can apply one TCI state, the receiving module 402 can also be used to receive a second command; the determining module 404 can also be used to determine the TCI state applied to the transmission of the target resource according to the second command.

[0120] Optionally, as an embodiment, the second command indicates one or more joint TCI states. The determining module 404 can be used to take the one joint TCI state as the TCI state of the target resource transmission application when the second command indicates one joint TCI state; and to take the first target joint TCI state among the multiple joint TCI states as the TCI state of the target resource transmission application when the second command indicates multiple joint TCI states.

[0121] Optionally, as an embodiment, the second command indicates multiple downlink TCI states and / or multiple uplink TCI states. The determining module 404 can be used to, when the target resource is a downlink resource, take the first target downlink TCI state among the multiple downlink TCI states as the TCI state of the target resource transmission application; and when the target resource is an uplink resource, take the first target downlink TCI state among the multiple uplink TCI states as the TCI state of the target resource transmission application.

[0122] Optionally, as an embodiment, if it is determined that the target resource can apply multiple TCI states, the receiving module 402 can also be used to receive a third command, the third command being used to schedule the transmission of the target resource; the determining module 404 can also be used to determine the TCI state applied to the transmission of the target resource based on the third command.

[0123] Optionally, as an embodiment, the third command includes a first indication field, which is used to indicate one of the following from a plurality of TCI states in which the target resource is indicated: one TCI state of the target resource transmission application; a plurality of TCI states of the target resource transmission application; or, in the case of a plurality of TCI states of the target resource transmission application, the order of the plurality of TCI states.

[0124] Optionally, as an embodiment, the determining module 404 can also be used to determine that the third command includes the first indication field in at least one of the following situations: the higher-layer signaling configuration of the third command includes the first indication field; the number of TCI states that the target resource can be applied to according to the first command is greater than 1.

[0125] Optionally, as an embodiment, the determining module 404 can be used to take the first target TCI state in the TCI state of the target resource being indicated as the TCI state of the target resource transmission application when the format of the third command is the first format.

[0126] Optionally, as an embodiment, the second command indicates multiple TCI states. If it is determined that the target resource can apply multiple TCI states, the determining module 404 can also be used for at least one of the following: if the target resource is a PDCCH, determining the TCI state of the PDCCH transmission application from the multiple TCI states indicated by the second command based on the identifier of the search space associated with the PDCCH; if the target resource is a PDCCH, determining the TCI state of the PDCCH transmission application from the multiple TCI states indicated by the second command based on the identifier of the control resource set associated with the search space associated with the PDCCH.

[0127] Optionally, as an embodiment, the plurality of TCI states indicated by the second command include a first TCI state and a second TCI state; wherein, the search space includes a first search space and a second search space, and determining the TCI state of the PDCCH transmission application from the plurality of TCI states indicated by the second command includes: the PDCCH transmitted through the first search space applies the first TCI state, and the PDCCH transmitted through the second search space applies the second TCI state; the control resource set includes a first control resource set and a second control resource set, and determining the TCI state of the PDCCH transmission application from the plurality of TCI states indicated by the second command includes: the PDCCH transmitted through the first control resource set applies the first TCI state, and the PDCCH transmitted through the second control resource set applies the second TCI state.

[0128] Optionally, as an embodiment, the second command indicates multiple TCI states. If it is determined that the target resource can apply multiple TCI states, the determining module 404 can also be used for at least one of the following: if the target resource is a PUSCH, and the probe reference signal SRS resource set used for the PUSCH transmission is associated with a channel state information reference signal CSI-RS, determine the TCI state applied to the CSI-RS transmission from the multiple TCI states indicated by the second command based on the identifier of the SRS resource set; if the target resource is a PUSCH, determine the TCI state applied to the SRS resource set transmission from the multiple TCI states indicated by the second command based on the identifier of the SRS resource set; wherein the SRS resource set is used for the PUSCH transmission.

[0129] Optionally, as an embodiment, the plurality of TCI states indicated by the second command include a first TCI state and a second TCI state, and the SRS resource set includes a first SRS resource set and a second SRS resource set; determining the TCI state of the CSI-RS transmission application from the plurality of TCI states indicated by the second command according to the identifier of the SRS resource set includes: the CSI-RS associated with the first SRS resource set applies the first TCI state, and the CSI-RS associated with the second SRS resource set applies the second TCI state; determining the TCI state of the SRS resource set transmission application from the plurality of TCI states indicated by the second command according to the identifier of the SRS resource set includes: the first SRS resource set applies the first TCI state, and the second SRS resource set applies the second TCI state.

[0130] Optionally, as an embodiment, the determining module 404 can also be used to determine the size of the third command based on the second command; wherein the second command is used to determine the TCI status of the target resource transmission application.

[0131] Optionally, as an embodiment, the determining module 404 may be used to determine at least one of the following based on the second command: whether the third command has a second indicator field; the number of second indicator fields in the third command; and the bit length of the second indicator field in the third command.

[0132] Optionally, as an embodiment, the second indication field includes at least one of the following: SRI field, TPMI field, TPC field, PTRS-DMRS associated field, and dynamic switching indication field.

[0133] Optionally, as an embodiment, the receiving module 402 can also be used to receive a fourth command, which is used to activate the TCI state of the target resource transmission application.

[0134] Optionally, as an embodiment, the receiving module 402 can also be used to receive a fifth command, the fifth command being used to indicate at least one of the following: the resource pool of the TCI state; the mode of the TCI state, wherein the mode of the TCI state includes a joint indication or a separate indication.

[0135] Optionally, as an embodiment, the resource pool of the TCI state and the mode of the TCI state are associated with CORESETPoolIndex, and / or the resource pool of the TCI state is associated with the mode of the TCI state.

[0136] Optionally, as an embodiment, the fourth command includes code point information, which is used to indicate the TCI state activated by the code point information. The code point information includes at least one of the following: an identifier of the TCI state selected from the resource pool of TCI states; an identifier for distinguishing uplink or downlink; an identifier for distinguishing the TCI state group to which the TCI state belongs; and a mode of the TCI state, wherein the mode of the TCI state includes a combined indication or a separate indication.

[0137] Optionally, as an embodiment, the receiving module 402 can also be used to receive a second command; wherein the second command is used to determine the TCI status of the target resource transmission application, and the TCI field in the second command corresponds to the target code point information in the fourth command.

[0138] Optionally, as an embodiment, the second command includes a TCI field, one TCI field corresponding to target code point information in one of the fourth commands; or the second command includes a TCI field, one TCI field corresponding to target code point information in multiple of the fourth commands; or the second command includes multiple TCI fields, each of the multiple TCI fields corresponding to target code point information in one of the fourth commands.

[0139] Optionally, as an embodiment, the first command satisfies at least one of the following: the first command is used to indicate the maximum number of TCI states that the target resource can apply; the first command is used to indicate the TCI states that the target resource can apply as scheduled by a third command of different formats; the first command is associated with the target resource.

[0140] Optionally, as an embodiment, the target resource includes at least one of the following: PDCCH, control resource set, search space, PDSCH, PUCCH, PUSCH, CSI-RS, SRS resource, and SRS resource set.

[0141] The apparatus 400 according to the embodiments of this application can refer to the flow of the method 200 corresponding to the embodiments of this application. Furthermore, each unit / module in the apparatus 400 and the other operations and / or functions described above are respectively implemented to achieve the corresponding flow in the method 200 and can achieve the same or equivalent technical effects. For the sake of brevity, they will not be described in detail here.

[0142] The TCI status determination device in this application embodiment can be a device, a device with an operating system, or an electronic device, or it can be a component, integrated circuit, or chip in a terminal. The device or electronic device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not impose specific limitations.

[0143] The TCI state determination device provided in this application embodiment can achieve... Figures 2 to 3 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0144] Figure 5 This is a schematic diagram of a TCI status determination device according to an embodiment of this application. This device may correspond to a network-side device in other embodiments. Figure 5As shown, the device 500 includes the following modules.

[0145] The sending module 502 can be used to send a first command, which is used by the terminal to determine the number of TCI states that can be applied to the target resource.

[0146] In this embodiment of the application, the network-side device sends a first command, which is used by the terminal to determine the number of TCI states that the target resource can apply, so that the terminal can determine whether the target resource can be transmitted with a single TRP or multiple TRPs, which is beneficial to realize flexible transmission of the target resource and improve communication effectiveness.

[0147] Optionally, as an embodiment, the first command is used by the terminal to determine that the target resource can apply a TCI state, and the sending module 502 can also be used to send a second command, the second command being used by the terminal to determine the TCI state applied to the transmission of the target resource.

[0148] Optionally, as an embodiment, the first command is used by the terminal to determine that the target resource can apply multiple TCI states. The sending module 502 can also be used to send a third command, which is used to schedule the target resource. The third command is also used by the terminal to determine the TCI state of the target resource transmission application.

[0149] Optionally, as an embodiment, the third command includes an indication field for indicating one of the following from a plurality of TCI states in which the target resource is indicated: one TCI state of the target resource transmission application; a plurality of TCI states of the target resource transmission application; or, in the case of a plurality of TCI states of the target resource transmission application, the order of the plurality of TCI states.

[0150] Optionally, as an embodiment, the sending module 502 can also be used to send a fourth command, which is used to activate the TCI state of the target resource transmission application.

[0151] Optionally, as an embodiment, the sending module 502 can also be used to send a fifth command, the fifth command being used to indicate at least one of the following: the resource pool of the TCI state; the mode of the TCI state, wherein the mode of the TCI state includes a joint indication or a separate indication.

[0152] Optionally, as an embodiment, the sending module 502 can also be used to send a second command, which is used by the terminal to determine the TCI status of the target resource transmission application, and the TCI field in the second command corresponds to the target code point in the fourth command.

[0153] Optionally, as an embodiment, the first command satisfies at least one of the following: the first command is used to indicate the maximum number of TCI states that the target resource can apply; the first command is used to indicate the TCI states that the target resource can apply as scheduled by a third command of different formats; the first command is associated with the target resource.

[0154] The apparatus 500 according to the embodiments of this application can refer to the flow of the method 300 corresponding to the embodiments of this application. Furthermore, each unit / module in the apparatus 500 and the other operations and / or functions described above are respectively implemented to achieve the corresponding flow in the method 300 and can achieve the same or equivalent technical effects. For the sake of brevity, they will not be described in detail here.

[0155] Optional, such as Figure 6 As shown, this application embodiment also provides a communication device 600, including a processor 601, a memory 602, and a program or instructions stored in the memory 602 and executable on the processor 601. For example, when the communication device 600 is a terminal, the program or instructions executed by the processor 601 implement the various processes of the above-described TCI state determination method embodiment and achieve the same technical effect. When the communication device 600 is a network-side device, the program or instructions executed by the processor 601 implement the various processes of the above-described TCI state determination method embodiment and achieve the same technical effect; to avoid repetition, further details are omitted here.

[0156] This application also provides a terminal, including a processor and a communication interface. The processor is used to determine the number of Transmission Configuration Indication (TCI) states that can be applied to a target resource according to a first command. The communication interface is used to receive the first command. This terminal embodiment corresponds to the terminal-side method embodiment described above. All implementation processes and methods of the above method embodiments can be applied to this terminal embodiment and achieve the same technical effects. Specifically, Figure 7 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0157] The terminal 700 includes, but is not limited to, at least some of the following components: radio frequency unit 701, network module 702, audio output unit 703, input unit 704, sensor 705, display unit 706, user input unit 707, interface unit 708, memory 709, and processor 710.

[0158] Those skilled in the art will understand that the terminal 700 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 710 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 7The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0159] It should be understood that, in this embodiment, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042. The GPU 7041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 706 may include a display panel 7061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0160] In this embodiment, the radio frequency unit 701 receives downlink data from the network-side device and processes it for the processor 710; additionally, it sends uplink data to the network-side device. Typically, the radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0161] The memory 709 can be used to store software programs or instructions and various data. The memory 709 may primarily include a program or instruction storage area and a data storage area. The program or instruction storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 709 may include high-speed random access memory and non-transient memory, wherein the non-transient memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. For example, at least one disk storage device, flash memory device, or other non-transient solid-state storage device.

[0162] Processor 710 may include one or more processing units; optionally, processor 710 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications or instructions, and the modem processor mainly handles wireless communication, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 710.

[0163] The radio frequency unit 701 can be used to receive the first command.

[0164] The processor 710 can be used to determine, based on the first command, the number of Transmission Configuration Indication (TCI) states to which the target resource can be applied.

[0165] In this embodiment, the terminal determines the number of TCI states that the target resource can apply based on the received first command, so that the terminal can determine whether the target resource can be transmitted with a single TRP or multiple TRPs, which is beneficial to realize flexible transmission of the target resource and improve communication effectiveness.

[0166] The terminal 700 provided in this application embodiment can also implement the various processes of the above TCI state determination method embodiment and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0167] This application also provides a network-side device, including a processor and a communication interface. The communication interface is used to send a first command, which is used by the terminal to determine the number of TCI states that can be applied to the target resource. This network-side device embodiment corresponds to the network-side device method embodiment described above. All implementation processes and methods of the above method embodiments can be applied to this network-side device embodiment and achieve the same technical effects.

[0168] Specifically, embodiments of this application also provide a network-side device. For example... Figure 8 As shown, the network-side device 800 includes: an antenna 81, a radio frequency (RF) device 82, and a baseband device 83. The antenna 81 is connected to the RF device 82. In the uplink direction, the RF device 82 receives information through the antenna 81 and transmits the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes the information to be transmitted and sends it to the RF device 82. The RF device 82 processes the received information and then transmits it through the antenna 81.

[0169] The aforementioned frequency band processing device can be located in the baseband device 83. The method executed by the network-side device in the above embodiments can be implemented in the baseband device 83, which includes a processor 84 and a memory 85.

[0170] Baseband device 83 may include, for example, at least one baseband board on which multiple chips are disposed, such as... Figure 8 As shown, one of the chips, for example, is a processor 84, which is connected to a memory 85 to call the program in the memory 85 and execute the network-side device operations shown in the above method embodiments.

[0171] The baseband device 83 may also include a network interface 86 for exchanging information with the radio frequency device 82, such as a common public radio interface (CPRI).

[0172] Specifically, the network-side device in this application embodiment further includes: instructions or programs stored in memory 85 and executable on processor 84, wherein processor 84 calls the instructions or programs in memory 85 to execute. Figure 5 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0173] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described TCI state determination method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0174] The processor may be the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0175] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above TCI state determination method embodiment and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0176] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0177] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0178] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network-side device, etc.) to execute the methods described in the various embodiments of this application.

[0179] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for determining the Transmission Configuration Indicator (TCI) status, characterized in that, include: The terminal receives a target resource configuration, which indicates the association between a first command and a target resource. The target resource includes a control resource set (CORESET) or a physical uplink control channel (PUCCH) resource. One first command is associated with one CORESET or one PUCCH resource. The terminal determines, based on the first command, the number of TCI states that can be applied to the target resource associated with the first command.

2. The method according to claim 1, characterized in that, The method further includes: The terminal receives the second command; If it is determined that the target resource associated with the first command can apply one TCI state, the terminal determines the TCI state of the transmission application of the target resource according to the second command.

3. The method according to claim 2, characterized in that, The second command indicates one or more joint TCI states, and determining the TCI state of the transport application of the target resource according to the second command includes: If the second command indicates a joint TCI state, the joint TCI state shall be used as the TCI state of the transmission application of the target resource. When the second command indicates multiple joint TCI states, the first target joint TCI state among the multiple joint TCI states is taken as the TCI state of the transmission application of the target resource.

4. The method according to claim 2, characterized in that, The second command indicates multiple downlink TCI states and / or multiple uplink TCI states, wherein determining the TCI state of the transmission application of the target resource according to the second command includes: When the target resource is a downlink resource, the first target downlink TCI state among the plurality of downlink TCI states is taken as the TCI state of the transmission application of the target resource. When the target resource is an uplink resource, the first target downlink TCI state among the plurality of uplink TCI states is taken as the TCI state of the transmission application of the target resource.

5. The method according to claim 1, characterized in that, The method further includes: The terminal receives a third command, which is used to schedule the transmission of the target resource; If it is determined that the target resource associated with the first command can apply multiple TCI states, the terminal determines the TCI state of the transmission application of the target resource according to the third command.

6. The method according to claim 5, characterized in that, The third command includes a first indication field, which is used to indicate one of the following from a plurality of TCI states in which the target resource is indicated: The target resource is transmitted using one TCI state; The target resource is transmitted through multiple TCI states of the application; When multiple TCI states are applied to the transmission of the target resource, the order of the multiple TCI states.

7. The method according to claim 6, characterized in that, The method further includes: The third command is determined to include the first indication field if at least one of the following conditions is met: The third command configured by the higher-level signaling includes the first indication field; The number of TCI states that the target resource can be applied to, as determined by the first command, is greater than 1.

8. The method according to claim 5, characterized in that, Determining the TCI status of the transmission application of the target resource according to the third command includes: When the format of the third command is the first format, the first target TCI state in the TCI state indicated for the target resource is taken as the TCI state of the transmission application of the target resource.

9. The method according to claim 1, characterized in that, The target resource also includes the Physical Downlink Control Channel (PDCCH), and the method further includes: The terminal receives a second command, which indicates multiple TCI states; If it is determined that the target resource associated with the first command can apply multiple TCI states, the TCI state of the PDCCH transmission application is determined from the multiple TCI states indicated by the second command based on the identifier of the search space associated with the PDCCH; or, the TCI state of the PDCCH transmission application is determined from the multiple TCI states indicated by the second command based on the identifier of the control resource set associated with the search space associated with the PDCCH.

10. The method according to claim 9, characterized in that, The multiple TCI states indicated by the second command include a first TCI state and a second TCI state, and the search space includes a first search space and a second search space; Determining the TCI state of the PDCCH transmission application from the plurality of TCI states indicated by the second command includes: The PDCCH transmitted through the first search space applies the first TCI state, and the PDCCH transmitted through the second search space applies the second TCI state.

11. The method according to claim 9, characterized in that, The multiple TCI states indicated by the second command include a first TCI state and a second TCI state, and the control resource set includes a first control resource set and a second control resource set; Determining the TCI state of the PDCCH transmission application from the plurality of TCI states indicated by the second command includes: The first TCI state is applied to the PDCCH transmitted through the first control resource set, and the second TCI state is applied to the PDCCH transmitted through the second control resource set.

12. The method according to claim 1, characterized in that, The target resource further includes: Physical Uplink Shared Channel (PUSCH), and the method further includes: The terminal receives a second command, which indicates multiple TCI states; If it is determined that the target resource associated with the first command can apply multiple TCI states, If the probe reference signal (SRS) resource set used for the PUSCH transmission is associated with a channel state information reference signal (CSI-RS), the TCI state of the CSI-RS transmission application is determined from a plurality of TCI states indicated by the second command based on the identifier of the SRS resource set; or, the TCI state of the SRS resource set transmission application is determined from a plurality of TCI states indicated by the second command based on the identifier of the SRS resource set used for the PUSCH transmission; wherein the SRS resource set is used for the PUSCH transmission.

13. The method according to claim 12, characterized in that, The multiple TCI states indicated by the second command include a first TCI state and a second TCI state, and the SRS resource set includes a first SRS resource set and a second SRS resource set; The step of determining the TCI state of the CSI-RS transmission application from multiple TCI states indicated by the second command based on the identifier of the SRS resource set includes: The CSI-RS associated with the first SRS resource set applies the first TCI state, and the CSI-RS associated with the second SRS resource set applies the second TCI state.

14. The method according to claim 12, characterized in that, The multiple TCI states indicated by the second command include a first TCI state and a second TCI state, and the SRS resource set includes a first SRS resource set and a second SRS resource set; Determining the TCI state of the SRS resource set transmission application from multiple TCI states indicated by the second command based on the identifier of the SRS resource set includes: The first SRS resource set applies the first TCI state, and the second SRS resource set applies the second TCI state.

15. The method according to claim 5, characterized in that, Before the terminal receives the third command, the method further includes: The terminal determines the size of the third command according to the second command; wherein the second command is used to determine the TCI status of the transmission application of the target resource.

16. The method according to claim 15, characterized in that, The terminal determines the size of the third command based on the second command by including: The terminal determines at least one of the following based on the second command: Does the third command contain a second instruction field? The number of second instruction fields in the third command; and The bit length of the second indicator field in the third command.

17. The method according to claim 16, characterized in that, The second indication field includes at least one of the following: The fields include: Probe Reference Resource Indicator (SRI), Transmit Precoding Matrix Indicator (TPMI), Transmit Power Control (TPC), Phase Tracking Reference Signal Demodulation Reference Signal (PTRS-DMRS) Association Field, and Dynamic Switching Indicator Field.

18. The method according to claim 1, characterized in that, The method further includes: The terminal receives a fourth command, which is used to activate the TCI state of the transmission application of the target resource.

19. The method according to claim 1, characterized in that, The method further includes: the terminal receiving a fifth command, the fifth command being used to indicate at least one of the following: The resource pool of the TCI state, and the mode of the TCI state; wherein the mode of the TCI state includes a joint indication or a separate indication.

20. The method according to claim 19, characterized in that, The resource pool of the TCI state and the mode of the TCI state are associated with the control resource set resource pool index CORESETPoolIndex; and / or The resource pool of the TCI state is associated with the mode of the TCI state.

21. The method according to claim 18, characterized in that, The fourth command includes code point information, which indicates the TCI state activated by the code point information. The code point information includes at least one of the following: The identifier of the TCI state selected from the resource pool of TCI states; A marker used to distinguish between upward and downward traffic; An identifier used to distinguish the TCI state group to which the TCI state belongs; The TCI state pattern includes either a combined indication or a separate indication.

22. The method according to claim 18, characterized in that, After the terminal receives the fourth command, the method further includes: The terminal receives the second command; The second command is used to determine the TCI status of the transmission application of the target resource, and the TCI field in the second command corresponds to the target code point information in the fourth command.

23. The method according to claim 22, characterized in that, The second command includes a TCI field, and one TCI field corresponds to target code point information in one of the fourth commands; The second command includes a TCI field, and one TCI field corresponds to the target code point information in multiple fourth commands; or The second command includes multiple TCI fields, each of which corresponds to a target code point information in the fourth command.

24. The method according to claim 1, characterized in that, The first command satisfies at least one of the following: The first command is used to indicate the maximum number of TCI states that the target resource can apply; The first command is used to indicate the TCI status that the target resource scheduled by the third command in different formats can apply; The first command is associated with the target resource.

25. The method according to claim 1, characterized in that, The target resources also include at least one of the following: search space, physical downlink shared channel (PDSCH), CSI-RS, SRS resources, and SRS resource set.

26. A method for determining the state of a TCI, characterized in that, include: The network-side device sends a target resource configuration, which indicates the association between a first command and a target resource. The target resource includes a control resource set (CORESET) or a physical uplink control channel (PUCCH) resource. One first command is associated with one CORESET or one PUCCH resource. The first command is used to determine the number of TCIs that can be applied to the target resource associated with the first command.

27. The method according to claim 26, characterized in that, The first command is used to determine that the target resource associated with the first command can apply one TCI state, and the method further includes: The network-side device sends a second command, which is used to determine the TCI status of the transmission application of the target resource.

28. The method according to claim 26, characterized in that, The first command is used to determine that the target resource can apply multiple TCI states, and the method further includes: The network-side device sends a third command, which is used to schedule the transmission of the target resource and determine the TCI status of the transmission application of the target resource.

29. The method according to claim 28, characterized in that, The third command includes a first indication field, which is used to indicate one of the following from a plurality of TCI states in which the target resource is indicated: One TCI state of the target resource transmission application; The target resource transmission application has multiple TCI states; In the case where multiple TCI states are applied to the target resource transmission, the order of the multiple TCI states.

30. The method according to claim 26, characterized in that, The method further includes: The network-side device sends a fourth command, which is used to activate the TCI state of the transmission application of the target resource.

31. The method according to claim 26, characterized in that, The method further includes: the network-side device sending a fifth command, the fifth command being used to indicate at least one of the following: The resource pool of the TCI state; the mode of the TCI state, wherein the mode of the TCI state includes a joint indication or a separate indication.

32. The method according to claim 31, characterized in that, After the network-side device sends the fourth command, the method further includes: The network-side device sends a second command, which is used by the terminal to determine the TCI status of the transmission application of the target resource. The TCI field in the second command corresponds to the target code point information in the fourth command.

33. The method according to claim 26, characterized in that, The first command satisfies at least one of the following: The first command is used to indicate the maximum number of TCI states that the target resource can apply; The first command is used to indicate the TCI status that the target resource scheduled by the third command in different formats can apply; The first command is associated with the target resource.

34. A TCI state determination device, characterized in that, include: A receiving module is used to receive a target resource configuration, wherein the target resource configuration indicates the association between a first command and a target resource, and the target resource includes a control resource set (CORESET) or a physical uplink control channel (PUCCH) resource, wherein one first command is associated with one CORESET or one PUCCH resource; The determining module is configured to determine, based on the first command, the number of TCI states that can be applied to the target resource associated with the first command.

35. A TCI state determination device, characterized in that, include: A sending module is used to send a target resource configuration, wherein the target resource configuration indicates the association between a first command and a target resource, wherein the target resource includes a control resource set (CORESET) or a physical uplink control channel (PUCCH) resource, and a first command is associated with a CORESET or a PUCCH resource, wherein the first command is used to determine the number of TCI states that can be applied to the target resource associated with the first command.

36. A terminal, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the TCI state determination method as described in any one of claims 1 to 25.

37. A network-side device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the TCI state determination method as described in any one of claims 26 to 33.

38. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the TCI state determination method as described in any one of claims 1 to 25, or implement the TCI state determination method as described in any one of claims 26 to 33.

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