Beam indication method, network device, and terminal device

Abstract

The present application discloses a beam instruction method, a network device, and a terminal device, which belong to the field of communication technology, and includes: configuring a transmission configuration instruction TCI state pool including a plurality of TCI states; and sending a first command to a terminal device, the first command being used to indicate at least one TCI state in the TCI state pool, the at least one TCI state being used to indicate common beam information of a plurality of channels and / or reference signals RS, and the at least one TCI state including a shared TCI state and / or an independent TCI state.

Description

Technical Field

[0001] (Cross-reference to Related Applications) This invention claims the priority of a Chinese patent application filed with the Chinese Patent Office on January 18, 2021, with the application number 202110065344.0 and the invention title "Beam Indication Method, Network Device and Terminal Device", and all the contents of the said application are incorporated into this invention by reference.

[0002] This application belongs to the field of communication technologies, and specifically relates to a beam indication method, a network device and a terminal device.

Background Art

[0003] In 5G NR (New Radio), analog beamforming is transmitted over the entire bandwidth, and on the panel of each high-frequency antenna array, the array elements in each polarization direction can only transmit analog beams in a time-division multiplexing manner. The forming weight of the analog beam is realized by adjusting the parameters of devices such as radio frequency front-end phase shifters. In the academic and industrial circles, generally the polling method is used to train the analog beamforming vector. That is, the array elements in each polarization direction of each antenna panel transmit training signals (i.e., candidate forming vectors) in a time-division multiplexing manner at the agreed time in turn, and for the network side to use this training signal to realize the transmission of analog beams during the next transmission service, the terminal feeds back a beam report after measurement.

[0004] The content of the beam report generally includes a plurality of optimal transmission beam identifiers and the received power of each measured transmission beam. When performing beam measurement, the network side arranges an RS resource set (Reference Signal resource set) that includes at least one reference signal resource, such as an SSB (Synchronization Signal Block) resource or a CSI (Channel State Information)-RS resource. The UE (User Equipment) measures the L1-RSRP (Reference Signal Receiving Power) / L1-SINR (Signal to Interference Noise Ratio) of each RS resource, reports at least one optimal measurement result to the network side, and the reported content includes an SSBRI (SS / PBCH Block Resource indicator) or a CRI (CSI-RS resource indicator, CSI-RS resource indicator), and the L1-RSRP / L1-SINR. To determine the beam information for the network side to transmit channels or signals to the UE, this reported content reflects at least one optimal beam and its quality.

[0005] After beam measurement and beam reporting, in order to establish a beam link between the network side and the UE and realize the transmission of channels or reference signals, the network side ri ri can perform beam indication for the downlink ri ri and uplink channels or reference signals.

[0006] However, the beam indication mechanisms for various channels and reference signals in the prior art are not the same, require a relatively large signaling overhead, and do not provide a relatively good common beam information indication method for multiple channels and / or RSs.

Summary of the Invention

Problems to be Solved by the Invention

[0007] Embodiments of the present application provide a beam indication method, a network device, and a terminal device that can solve the problems that the conventional beam indication method is incomplete and the signaling overhead is large.

Means for Solving the Problems

[0008] According to a first aspect, embodiments of the present application provide a beam indication method, which is executed by a network device, arranging a transmission configuration indication (TCI) state pool including a plurality of TCI states; sending a first command to a terminal device, where the first command is used to indicate at least one TCI state in the TCI state pool, the at least one TCI state is used to indicate common beam information of a plurality of channels and / or reference signal (RS), and the at least one TCI state includes a shared TCI state and / or an independent TCI state.

[0009] According to a second aspect, embodiments of the present application provide a beam indication method, which is executed by a terminal device, receiving a first command sent by a network device, where the first command is used to indicate at least one TCI state in a TCI state pool, the at least one TCI state includes a shared TCI state and / or an independent TCI state, the TCI state pool is pre-arranged by the network device, and the at least one TCI state is used to indicate common beam information of a plurality of channels and / or reference signal (RS); determining, based on the first command, the at least one TCI state corresponding to an uplink (UL) and / or a downlink (DL). ri ri link UL and / or down ri ri link DL.

[0010] According to a third aspect, an embodiment of the present application provides a network device, which includes a first allocation module for allocating a transmission configuration indication (TCI) state pool including a plurality of TCI states, and a first transmission module for transmitting a first command to a terminal device, where the first command is used to indicate at least one TCI state in the TCI state pool, the at least one TCI state is used to indicate common beam information of a plurality of channels and / or reference signal (RS), and the first transmission module includes the at least one TCI state including a shared TCI state and / or an independent TCI state.

[0011] According to a fourth aspect, an embodiment of the present application provides a terminal device, which includes a first reception module for receiving a first command transmitted by a network device, where the first command is used to indicate at least one TCI state in a TCI state pool, the at least one TCI state includes a shared TCI state and / or an independent TCI state, the TCI state pool is pre-allocated by the network device, and the at least one TCI state is used to indicate common beam information of a plurality of channels and / or reference signal (RS), and a first determination module for determining the at least one TCI state corresponding to an uplink (UL) and / or a downlink (DL) based on the first command. ri ri link UL and / or down ri ri link DL.

[0012] According to a fifth aspect, an embodiment of the present application provides a network device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of the beam indication method described in the first aspect are realized.

[0013] According to a sixth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the beam indication method described in the first aspect are realized.

[0014] According to a seventh aspect, an embodiment of the present application provides a terminal device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of the beam indication method described in the second aspect are realized.

[0015] According to an eighth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the beam indication method described in the second aspect are realized.

[0016] According to a ninth aspect, an embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor runs a program or instruction and is used to realize the beam indication method described in the first aspect or the second aspect.

Advantages of the Invention

[0017] In the embodiment of the present application, the network device arranges a TCI state pool and sends a first command to the terminal device. This first command is used to indicate at least one TCI state in the TCI state pool, and this at least one TCI state is used to indicate the common beam information of a plurality of channels and / or the reference signal RS. Thereby, the terminal device is based on the first command to perform the uplink UL and / or downlink ri ri link ri riAt least one TCI state corresponding to the ink DL can be determined. Thereby, it is possible to unify the beam indication mechanisms for a plurality of channels and / or RS by the network device, reduce unnecessary signaling overhead, and make the beam indication mechanism more complete.

Brief Description of Drawings

[0018]

Figure 1

Figure 2

Figure 3

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Figure 7

Modes for Carrying Out the Invention

[0019] The following clearly describes the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in the present application shall fall within the protection scope of the present application.

[0020] The technical solution of the present invention can be applied to various communication systems, such as GSM (Global System of Mobile communication), CDMA (Code Division Multiple Access) system, WCDMA (Wideband Code Division Multiple Access), GPRS (General Packet Radio Service), LTE (Long Term Evolution), NR (New Radio), etc.

[0021] The UE may also be referred to as a Mobile Terminal, an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The access terminal may be a mobile phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), a handheld device with wireless communication function, a computing device or other processing devices connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved PLMN (Public Land Mobile Network) network.

[0022] The network device may be a device for communicating with a mobile device. The network device may be a BTS (Base Transceiver Station) in GSM (Global System of Mobile communication) or CDMA (Code Division Multiple Access), may be an NB (NodeB) in WCDMA (Wideband Code Division Multiple Access), may be an eNB or eNodeB (Evolutional Node B) in LTE (Long Term Evolution) or an access point, or may be an in-vehicle device, a wearable device, a network-side device in a future 5G network or a network device in a future evolved PLMN (Public Land Mobile Network) network.

[0023] Hereinafter, the beam indication according to the embodiments of the present application will be described in detail with reference to the drawings in conjunction with specific embodiments and their application scenarios.

[0024] FIG. 1 is a schematic flowchart of a beam indication method according to an embodiment of the present application. As shown in FIG. 1, the beam indication method is executed by a network device and includes the following steps.

[0025] In S102, a TCI (Transmission Configuration Indication) state pool including a plurality of TCI states is arranged.

[0026] Here, the TCI state pool can be represented as a TCI state pool.

[0027] In S104, a first command is sent to the terminal device. The first command is used to indicate at least one TCI state in the TCI state pool, and at least one TCI state is used to indicate common beam information of a plurality of channels and / or RSs.

[0028] Here, the first command includes DCI (Downlink Control Information) signaling and / or a MAC (Media Access Control) CE (Control Element) command. At least one TCI state includes a shared TCI state (i.e., joint TCI state) and / or a separate TCI state (i.e., separate TCI state).

[0029] FIG. 2 is a schematic flowchart of a beam indication method according to another embodiment of the present application. As shown in FIG. 2, the beam indication method is executed by a terminal device and includes the following steps.

[0030] In S202, a first command transmitted by the network device is received. The first command is used to indicate at least one TCI state in the TCI state pool, and this at least one TCI state is used to indicate common beam information of a plurality of channels and / or RSs.

[0031] Here, the TCI state pool is pre-configured by the network device, and at least one TCI state includes a shared TCI state and / or a separate TCI state.

[0032] In S204, based on the first command, at least one TCI state corresponding to UL (Uplink) and / or DL (Downlink) is determined. ri ri ink) and / or DL (Downlink, down ri ri link) is determined.

[0033] FIG. 3 is a schematic lane diagram of a beam indication method according to an embodiment of the present application. As shown in FIG. 3, the beam indication method is executed by a network device and a terminal device and includes the following steps.

[0034] In S301, the network device arranges a TCI state pool.

[0035] In S302, the network device issues a first command to the terminal device.

[0036] Here, the first command includes a DCI signaling and / or a MAC CE command. The first command is used to indicate at least one TCI state in the TCI state pool, and this at least one TCI state is used to indicate common beam information of a plurality of channels and / or RSs.

[0037] In S303, the terminal device receives the first command.

[0038] In S304, the terminal device determines at least one TCI state corresponding to UL and / or DL based on the first command.

[0039] As can be seen from the above embodiment, the network device arranges a TCI state pool and sends a first command to the terminal device. This first command is used to indicate at least one TCI state in the TCI state pool. This at least one TCI state is used to indicate common beam information of a plurality of channels and / or reference signal RSs. Thereby, the terminal device can determine at least one TCI state corresponding to the uplink UL and / or the downlink DL based on the first command. Thereby, it realizes unifying the beam indication mechanism for a plurality of channels and / or RSs by the network device, reducing unnecessary signaling overhead, and making the beam indication mechanism more complete. ri ri link UL and / or down ri ri link DL.

[0040] The following will explain each step in the above beam indication method in detail.

[0041] In one embodiment, when the network device arranges the TCI state pool, it can arrange the TCI state pool for a cell set, where the cell set includes at least one cell.

[0042] In one embodiment, before the network device arranges the TCI state pool for a cell set, it can arrange at least one cell set in the cell group arrangement information. Based on this, the network device can arrange the TCI state pool for the cell set in the cell group arrangement information.

[0043] In one embodiment, when the network device arranges only one cell set, the network device arranges one TCI state pool for this cell set. When the network device arranges multiple cell sets, the network device arranges one TCI state pool for each of the multiple cell sets respectively, or the network device can arrange the TCI state pool only for the cell set including multiple cells, but cannot arrange the TCI state pool for the cell set including only one cell.

[0044] In one embodiment, when the network device arranges the TCI state pool for a cell set, it can arrange the TCI state pool for at least one cell in the cell set, or arrange the TCI state pool for each cell in the cell set respectively. When the network device arranges the TCI state pool for at least one cell in the cell set, this at least one cell can be called a reference cell, and other cells in this cell set other than the at least one cell also use the TCI state pool of this at least one cell. When the network device arranges the TCI state pool for each cell in the cell set respectively, the TCI state pools of each cell are independent of each other.

[0045] In one embodiment, the network device arranges a TCI state pool for cells in the cell set in the first specified information.

[0046] Here, the first specified information includes at least one of cell group arrangement information (for example, Cell Group Config), cell arrangement information of the cell, BWP (Bandwidth Part) arrangement information of the cell, PDSCH (Physical Downlink Shared Channel) arrangement information of the cell, and PDCCH (Physical Downlink Control Channel) arrangement information of the cell.

[0047] In one embodiment, considering that at least one cell does not belong to the cell set arranged by the network device, the network device can arrange a TCI state pool for this (these) cell(s) that do not belong to the cell set.

[0048] In one embodiment, the network device arranges a TCI state pool for cells that do not belong to the cell set in the second specified information.

[0049] Here, the second specified information includes at least one of cell arrangement information of the cell, BWP arrangement information of the cell, PDSCH arrangement information of the cell, and PDCCH arrangement information of the cell.

[0050] As can be seen from the above one or more embodiments, the beam indication method in this application can provide a flexible and complete TCI state pool arrangement method, thereby enabling the network device to more perfectly complete the beam indication mechanisms of multiple channels and / or RSs.

[0051] In one embodiment, the TCI state includes at least one of a QCL (Quasi - colocation) type A RS, a QCL type B RS, a QCL type C RS, and a QCL type D RS.

[0052] In one embodiment, when at least one of a QCL type A RS, a QCL type B RS, and a QCL type C RS is included in the TCI state, at least one of the QCL type A RS, the QCL type B RS, and the QCL type C RS is used only for DL. When at least one of a QCL type A RS, a QCL type B RS, and a QCL type C RS is included in the TCI state and a QCL type D RS is included, at least one of the QCL type A RS, the QCL type B RS, and the QCL type C RS in at least one TCI state indicated by the first command is used only for DL, but the QCL type D RS can be used for both DL and UL. After receiving the first command, the terminal device determines, based on the first command, whether each RS in the TCI state indicated by the first command is used for both DL and UL or only for DL.

[0053] For example, if the first command indicates a shared TCI state for both DL and UL from a TCI state pool and this shared TCI state includes a QCL type A RS and a QCL type D RS, the terminal device determines, based on the first command, that the QCL type D RS is used for both DL and UL, but the QCL type A RS is used only for DL.

[0054] For example, if the first command instructs one independent TCI state from the TCI state pool to the DL, and this independent TCI state includes QCL type A RS and QCL type D RS, the terminal device determines, based on the first command, that QCL type A RS and QCL type D RS can be used for the DL. If the first command instructs one independent TCI state from the TCI state pool to the UL, and this independent TCI state includes QCL type A RS and QCL type D RS, the terminal device determines, based on the first command, that QCL type D RS is used for the UL, where QCL type A RS is not applicable to the UL.

[0055] In this embodiment, after receiving the first command, the terminal device can determine, based on the first command, whether each RS in at least one TCI state instructed by the first command is used only for the DL or for both the DL and the UL.

[0056] In one embodiment, at least one TCI state instructed by the first command is used for the cell corresponding to the TCI state pool, or at least one TCI state instructed by the first command is used for all cells in the cell set where the cell corresponding to the TCI state pool is located.

[0057] In this embodiment, the TCI state pool and the cell have a corresponding relationship. For example, if the network device arranges TCI state pool 1 for cell a and arranges TCI state pool 2 for cell b, at least one TCI state in TCI state pool 1 instructed by the first command is used for cell a corresponding to TCI state pool 1, or for all cells in the cell set where cell a is located.

[0058] In one embodiment, the first command is used to instruct one shared TCI state for both the UL and the DL. After receiving the first command, the terminal device determines that the TCI state instructed by the first command is shared by the UL and the DL.

[0059] Alternatively, the first command is used to respectively indicate independent TCI states corresponding to UL and DL. After receiving the first command, the terminal device determines that the plurality of TCI states indicated by the first command are respectively used for UL and DL. In one embodiment, before sending the first command to the terminal device, the network device may send a second command, and this second command is used to indicate whether the first command indicates a shared TCI state or an independent TCI state for UL and DL. The second command includes DCI signaling and / or a MAC CE command.

[0060] The terminal device first receives the second command issued by the network device, and based on the second command, can determine whether the first command indicates a shared TCI state or an independent TCI state. After receiving the second command, the terminal device receives the first command issued by the network device, and thereby determines the shared TCI state of UL and DL or the respective independent TCI states of UL and DL based on the first command.

[0061] In this embodiment, the network device indicates whether the first command indicates a shared TCI state or an independent TCI state for UL and DL by the second command, so that the two indication methods of the first command can be switched (i.e., switched) by the second command. Thereby, the terminal device determines at least one TCI state corresponding to UL and / or DL based on the second command and the first command, and completes a plurality of channel / RS beam indication mechanisms.

[0062] In one embodiment, the first command is a first signaling field of P (P is a positive integer) first TCI states, and a second signaling field of Q (Q is a positive integer) second TCI states, and It includes at least one of the first indication information for indicating whether there is a second signaling field.

[0063] In this embodiment, when the first command includes the first indication information, if the first indication information indicates that there is no second signaling field, the first signaling field in the first command is used to indicate the shared TCI state of UL and DL. If the first indication information indicates that there is a second signaling field, the first signaling field in the first command is used to indicate the independent TCI state corresponding to DL, and the second signaling field in the first command is used to indicate the independent TCI state corresponding to UL.

[0064] In a single TRP (Transmit Reception Point) / single channel group scenario, for a single TRP identifier information / channel group, the first command includes at least one of the first signaling field, the second signaling field, and the first indication information described above. The terminal device can determine whether the first command indicates the shared TCI state or the independent TCI state of UL and DL based on the indication content of the first command, that is, based on whether there is a second signaling field.

[0065] Specifically, for a single TRP identifier information / channel group, if the first instruction information indicates that the second signaling field does not exist, the terminal device can determine that the first command instructs the shared TCI state of UL and DL for this TRP identifier information / channel group. If the first instruction information indicates that the second signaling field exists, the terminal device determines that the first signaling field in the first command instructs the DL independent TCI state for this TRP identifier information / channel group, and can determine that the second signaling field in the first command instructs the independent TCI state corresponding to the UL of this TRP identifier information / channel group.

[0066] For example, in the first command, if the first instruction information is 1 bit and this bit is 1, it indicates that the second signaling field exists in the first command. At this time, the first signaling field in the first command instructs the DL independent TCI state, and the second signaling field instructs the UL independent TCI state. If this bit is 0, it indicates that the second signaling field does not exist in the first command. At this time, the TCI state instructed by the first command domain in the first command is the shared TCI state of DL and UL.

[0067] In one embodiment, for a single TRP identifier information / channel group, when the first indication information indicates the absence of the second signaling field, and P in the first signaling field is 1, and the first signaling field indicates only one first TCI state, the terminal device can determine that the first TCI state indicated by the first signaling field is the shared TCI state of UL and DL of the TRP identifier information / channel group. When the first indication information indicates the presence of the second signaling field, and both P and Q in the first signaling field are 1, the first signaling field indicates only one first TCI state, and the second signaling field indicates only one second TCI state, the terminal device can determine that the first TCI state indicated by the first signaling field is the independent TCI state of DL of the TRP identifier information / channel group, and the second TCI state indicated by the second signaling field is the independent TCI state of UL of the TRP identifier information / channel group.

[0068] In one embodiment, in the instruction content of the first command, when both P and Q are greater than 1, the shared TCI state or the independent TCI state of UL and DL can be determined according to any one of the following methods.

[0069] In one method, the network device pre-agrees on a preset position or number with the terminal device, and this preset position or number is used to identify the shared TCI state of UL and DL from a plurality of TCI states, or to identify the independent TCI states corresponding to UL and DL respectively from a plurality of TCI states.

[0070] When the network device and the terminal device agree on a preset position or number, after the terminal device receives the first command, if the first command includes a first signaling field of P first TCI states and a second signaling field of Q second TCI states, and both P and Q are greater than 1, it is determined that the first TCI state corresponding to the preset position or number in the first signaling field is a DL independent TCI state, and it is determined that the second TCI state corresponding to the preset position or number in the second signaling field is a UL independent TCI state. If the first command includes only the first signaling field of P first TCI states and P is greater than 1, it is determined that the first TCI state corresponding to the preset position or number in the first signaling field is a shared TCI state of UL and DL.

[0071] In another method, before the network device sends the first command to the terminal device, it sends a third command to the terminal device, and the third command includes DCI signaling and / or a MAC CE command.

[0072] When the first command includes a first signaling field of P first TCI states and a second signaling field of Q second TCI states, and both P and Q are greater than 1, the third command is used to indicate one of the P first TCI states as a DL independent TCI state and one of the Q second TCI states as a UL independent TCI state.

[0073] When the first command includes only the first signaling field of P first TCI states and P is greater than 1, the third command is used to indicate one of the P first TCI states as a shared TCI state of UL and DL.

[0074] Before receiving the first command, the terminal device first receives a third command issued by the network device. Based on the third command and the first command, it determines the UL and DL independent TCI state or shared TCI state.

[0075] In one embodiment, in a multi-TRP / multi-channel group scenario, the first command is used to indicate at least one TCI state corresponding to each TRP identifier information / channel group. Here, the channel group includes a plurality of channels and / or RSs.

[0076] In one embodiment, for any one TRP identifier information / multi-channel group, the first command is used to indicate the shared TCI state of UL and DL of the TRP identifier information / channel group, or the first command is used to indicate the independent TCI states corresponding to the UL and DL of the TRP identifier information / channel group respectively.

[0077] In one embodiment, before sending the first command to the terminal device, the network device can send a fourth command to the terminal device. For any one TRP identifier information / multi-channel group, the fourth command is used to indicate whether the first command indicates a shared TCI state or an independent TCI state for this TRP identifier information / channel group. Here, the fourth command includes DCI signaling and / or MAC CE commands.

[0078] Before receiving the first command, the terminal device first receives the fourth command issued by the network device. For any one piece of TRP identifier information / multi-channel group, based on the fourth command, it can be determined that whether the first command instructs this TRP identifier information / channel group to be in the shared TCI state or the independent TCI state. Further, after receiving the first command, based on the first command, the shared TCI state of UL and DL of this TRP identifier information / channel group, or the independent TCI state corresponding to each of UL and DL can be determined.

[0079] In a multi-TRP / multi-channel group scenario, for any one piece of TRP identifier information / channel group, the first command may include at least one of a first signaling field of P (where P is a positive integer) first TCI states, a second signaling field of Q (where Q is a positive integer) second TCI states, and first indication information for indicating whether the second signaling field exists.

[0080] In this embodiment, for any one piece of TRP identifier information / channel group, when the first command includes the first indication information, if the first indication information indicates that the second signaling field does not exist, the first signaling field in the first command is used to indicate the shared TCI state of UL and DL of the corresponding TRP identifier information / channel group. If the first indication information indicates that the second signaling field exists, the first signaling field in the first command is used to indicate the independent TCI state corresponding to the DL of the corresponding TRP identifier information / channel group, and the second signaling field in the first command is used to indicate the independent TCI state corresponding to the UL of the corresponding TRP identifier information / channel group.

[0081] The terminal device determines whether the first command instructs a shared TCI state or an independent TCI state for UL and DL based on the instruction content of the first command, that is, based on whether the second signaling field exists. Specifically, for any one piece of TRP identifier information / channel group, if the first instruction information indicates that the second signaling field does not exist, the terminal device can determine that the first command instructs a shared TCI state for UL and DL of the corresponding TRP identifier information / channel group. If the first instruction information indicates that the second signaling field exists, the terminal device determines that the first signaling field in the first command instructs an independent TCI state for DL of the corresponding TRP identifier information / channel group, and can determine that the second signaling field in the first command instructs an independent TCI state corresponding to UL of the corresponding TRP identifier information / channel group.

[0082] Taking the multi-TRP scenario as an example. Assuming that the first command includes instruction contents corresponding to each of TRP1 and TRP2, this instruction content includes at least one of the above-mentioned first signaling field, the second signaling field, and the first instruction information, and the instruction contents corresponding to each of TRP1 and TRP2 both include the first instruction information. If the first instruction information in the instruction content corresponding to TRP1 indicates that the second signaling field does not exist, the terminal device can determine that the first signaling field in the instruction content corresponding to TRP1 instructs a shared TCI state for UL and DL of TRP1. If the first instruction information in the instruction content corresponding to TRP2 indicates that the second signaling field exists, the terminal device determines that the first signaling field in the instruction content corresponding to TRP2 instructs an independent TCI state for DL of TRP2, and can determine that the second signaling field in the instruction content corresponding to TRP2 instructs an independent TCI state corresponding to UL of TRP2.

[0083] In a multi-TRP / multi-channel group scenario, when the first command has TRP identifier information / instructions corresponding to the channel group and the instructions contain the first instruction information, depending on whether there is a second signaling field indicated by the first instruction information and based on the difference in the numbers of P and Q, the terminal device determines the TCI state corresponding to the TRP identifier information / channel group in different ways.

[0084] Taking TRP1 in a multi-TRP / multi-channel group scenario as an example. When the first instruction information in the instructions corresponding to TRP1 indicates that there is no second signaling field, P in the first signaling field is 1, and the first signaling field indicates only one first TCI state, the terminal device can determine that the first TCI state indicated by the first signaling field is the shared TCI state of the UL and DL of TRP1. When the first instruction information indicates that there is a second signaling field, both P and Q in the first signaling field are 1, the first signaling field indicates only one first TCI state, and the second signaling field indicates only one second TCI state, the terminal device can determine that the first TCI state indicated by the first signaling field is the independent TCI state of the DL of TRP1, and the second TCI state indicated by the second signaling field is the independent TCI state of the UL of TRP1.

[0085] When both P and Q are greater than 1 in the instructions corresponding to TRP1, the shared TCI state or the independent TCI state of the UL and DL of TRP1 can be determined according to any one of the following methods.

[0086] In one method, the network device pre-agrees with the terminal device on a preset position or number, and this preset position or number is used to identify the shared TCI state of UL and DL from a plurality of TCI states, or to identify independent TCI states corresponding to each of UL and DL from a plurality of TCI states.

[0087] When the network device agrees with the terminal device on a preset position or number, after the terminal device receives the first command, if the first command includes a first signaling field of P first TCI states and a second signaling field of Q second TCI states, and both P and Q are greater than 1, it is determined that the first TCI state corresponding to the preset position or number in the first signaling field is the independent TCI state of DL of TRP1, and it is determined that the second TCI state corresponding to the preset position or number in the second signaling field is the independent TCI state of UL of TRP1. If the first command only includes the first signaling field of P first TCI states and P is greater than 1, it is determined that the first TCI state corresponding to the preset position or number in the first signaling field is the shared TCI state of UL and DL of TRP1.

[0088] In another method, before sending the first command to the terminal device, the network device sends a third command to the terminal device, and the third command includes DCI signaling and / or a MAC CE command.

[0089] When the indication content of TRP1 includes a first signaling field of P first TCI states and a second signaling field of Q second TCI states, and both P and Q are greater than 1, the third command is used to indicate one of the P first TCI states as the independent TCI state of DL of TRP1, and to indicate one of the Q second TCI states as the independent TCI state of UL of TRP1.

[0090] When only the first signaling field of the first TCI state of P is included in the instruction content of TRP1 and P is greater than 1, the third command is used to indicate one of the first TCI states of the P first TCI states as the UL and DL shared TCI state of TRP1.

[0091] It should be noted that the above TRP1 is only an example. For any one of the TRP identifier information or channel group in the multi-TRP / multi-channel group scenario, the above-mentioned determination method of TRP1 can be adopted to determine the TCI state corresponding to the TRP identifier information or channel group, which will not be elaborated here.

[0092] After receiving the first command sent by the network device, the terminal device first determines the identifier and / or instruction content corresponding to the TRP identifier information / channel group based on the first command, and further determines the TCI state corresponding to the TRP identifier information / channel group based on the identifier and / or instruction content corresponding to the TRP identifier information / channel group. Here, the instruction content includes at least one of the first signaling field, the second signaling field, and the first instruction information.

[0093] In one embodiment, for any one of the TRP identifier information / multi-channel group, when the first command is the indicated TCI state of each TRP identifier information / multi-channel group, the indication method may be any one of the following.

[0094] In Method 1, the first command includes the identifier of each TRP identifier information / channel group and the instruction content corresponding to each identifier.

[0095] When the first command is instructed in the above method 1, after receiving the first command, the terminal device can determine the identifier and / or instruction content corresponding to each of the TRP identifier information / channel group based on each TRP identifier information / channel group identifier in the first command.

[0096] In method 2, the first command includes the instruction content corresponding to at least one set of TRP identifier information / channel group, and does not include the identifier of the TRP identifier information / channel group.

[0097] When the first command is instructed in the above method 2, after receiving the first command, the terminal device can determine the identifier and / or instruction content corresponding to each of the TRP identifier information / channel group based on the order or position of each set of instruction content in the first command.

[0098] Taking the TRP identifier information as an example, if the first command includes two sets of instruction content but does not include the TRP identifier information, and these two sets of instruction content are represented as the instruction content of group A and the instruction content of group B in order, then after receiving the first command, the terminal device determines according to the order of each set of instruction content in the first command that the instruction content of group A is the identifier and / or instruction content corresponding to TRP1 (TRP identifier information), and determines that the instruction content of group B is the identifier and / or instruction content corresponding to TRP2 (TRP identifier information).

[0099] In method 3, the first command includes a plurality, and each first command includes the identifier of one TRP identifier information / channel group and the corresponding instruction content respectively.

[0100] When the first command is instructed in the above method 3, after receiving the first command, the terminal device can determine the identifier and / or instruction content corresponding to each of the TRP identifier information / channel group based on the identifier of each TRP identifier information / channel group included in each first command respectively.

[0101] In Method 4, the first command includes a plurality, and each first command includes indication content corresponding to one TRP identifier information / channel group respectively, and does not include the identifier of the TRP identifier information / channel group.

[0102] When the first command indicates in the above Method 4, after receiving the first command, the terminal device can determine the identifier and / or indication content corresponding to each TRP identifier information / channel group based on at least one of the time domain information, frequency domain information, and code domain information of each first command.

[0103] In this embodiment, the indication content includes at least one of the first signaling field of P first TCI states, the second signaling field of Q second TCI states, and the first indication information for indicating whether the second signaling field exists. Here, both P and Q are positive integers.

[0104] In one embodiment, the first command further includes the identifier of the TRP identifier information / channel group and / or the second indication information corresponding to the indication content. The second indication information is used to indicate whether the identifier of the corresponding TRP identifier information / channel group and / or the corresponding indication content exists in the first command. After receiving the first command, the terminal device can determine whether the identifier of the corresponding TRP identifier information / channel group exists in the first command and / or whether the indication content corresponding to the identifier of the TRP identifier information / channel group exists based on the second indication information.

[0105] Specifically, when the first command includes the identifier of each TRP identifier information / channel group and the instruction content corresponding to each identifier, if the second instruction information indicates the existence of the corresponding TRP identifier information / channel group identifier and / or the instruction content corresponding to this identifier in the first command, the terminal device determines that the first command has the TRP identifier information / channel group identifier and the corresponding instruction content, and determines that the first command has the TCI state of this TRP identifier information / channel group. If the second instruction information indicates the non-existence of the corresponding TRP identifier information / channel group identifier and / or the instruction content corresponding to the identifier in the first command, the terminal device determines that the first command does not have the TRP identifier information / channel group identifier and the corresponding instruction content, and determines that the first command does not have the TCI state of this TRP identifier information / channel group.

[0106] For example, the second instruction information corresponding to each TRP identifier information / channel group may be 1 bit. This bit is set to 1 or 0 and is used to indicate whether the identifier of the corresponding TRP identifier information / channel group and the instruction content corresponding thereto exist in the first command.

[0107] When the first command is used to indicate the TCI states of TRP1 and TRP2, the first command includes 1-bit second indication information A corresponding to TRP1 and 1-bit second indication information B corresponding to TRP2. When the second indication information A is 1, it indicates that the TCI state of TRP1 exists in the first command. Conversely, when the second indication information A is 0, it indicates that the TCI state of TRP1 does not exist in the first command. Similarly to the second indication information A, the second indication information B is 1 or 0, thereby being able to indicate whether the TCI state of TRP2 exists or does not exist in the first command. As can be seen from the above one or more embodiments, the technical solution according to the present application can provide a flexible and complete beam indication method in a multi-TRP / multi-channel group scenario, thereby making the beam indication mechanism for multiple channels and / or RS by network devices more complete.

[0108] FIG. 4 is a schematic block diagram of a network device according to an embodiment of the present application. As shown in FIG. 4, the network device a first arrangement module 410 for arranging a transmission configuration indication TCI state pool including a plurality of TCI states, a first transmission module 420 for transmitting a first command to a terminal device, where the first command is used to indicate at least one TCI state in the TCI state pool, and the at least one TCI state is used to indicate common beam information of a plurality of channels and / or a reference signal RS, and the first transmission module 420 including the at least one TCI state including a shared TCI state and / or an independent TCI state.

[0109] In one embodiment, the first command includes downlink control information DCI signaling and / or a media access control MAC control element CE command.

[0110] In one embodiment, the first arrangement module 410 Including a first placement unit for placing the TCI state pool for a cell set, the cell set including at least one cell.

[0111] In one embodiment, the first placement module 410 Further includes a second placement unit for placing at least one of the cell sets in the cell group placement information before placing the TCI state pool for the cell set, The first placement unit is further used for placing the TCI state pool for the cell set in the cell group placement information.

[0112] In one embodiment, the first placement unit further Places one TCI state pool for each cell set respectively, Or Is used only for placing the TCI state pool for the cell set including a plurality of cells.

[0113] In one embodiment, the first placement unit further Places the TCI state pool for at least one of the cells in the cell set, Or Is used for placing the TCI state pool for each of the cells in the cell set respectively.

[0114] In one embodiment, the first placement unit further In the first specified information, places the TCI state pool for the cells in the cell set, and the first specified information includes at least one of cell group placement information, cell placement information of the cell, bandwidth part BWP placement information of the cell, physical downlink shared channel PDSCH placement information of the cell, and physical downlink control channel PDCCH placement information of the cell.

[0115] In one embodiment, the first placement module 410 It further includes a third placement unit for placing the TCI state pool for the cells that do not belong to the cell set.

[0116] In one embodiment, the third placement unit further is used in the second specified information to place the TCI state pool for the cells that do not belong to the cell set, and the second specified information includes at least one of the cell placement information of the cell, the BWP placement information of the cell, the PDSCH placement information of the cell, and the PDCCH placement information of the cell.

[0117] In one embodiment, when at least one of QCL type A RS, QCL type B RS, and QCL type C RS is included in the TCI state, at least one of QCL type A RS, QCL type B RS, and QCL type C RS is used only for the downlink DL. ri ri

[0118] In one embodiment, the at least one TCI state is used for the cell corresponding to the TCI state pool, or the at least one TCI state is used for all cells in the cell set where the cell corresponding to the TCI state pool is located.

[0119] In one embodiment, the first command is used to indicate one of the shared TCI states for the uplink UL and the downlink DL, or the first command is used to indicate the independent TCI states corresponding to the UL and the DL respectively. ri ri link UL and down ri ri link DL.

[0120] In one embodiment, the network device ​Before sending the first command to the terminal device, it further includes a second transmission module for sending a second command to the terminal device, and the second command is used to indicate that the first command indicates the shared TCI state or the independent TCI state for the UL and the DL, and the second command includes DCI signaling and / or a MAC CE command.

[0121] In one embodiment, the first command includes at least one of a first signaling field of P (where P is a positive integer) first TCI states, a second signaling field of Q (where Q is a positive integer) second TCI states, and first indication information for indicating whether the second signaling field exists.

[0122] In one embodiment, the network device before sending the first command to the terminal device, further includes a first agreement module for agreeing on a preset position or number with the terminal device, and the preset position or number is used to identify the shared TCI state of the UL and the DL from a plurality of the TCI states, or to identify the independent TCI states corresponding to the UL and the DL respectively from a plurality of the TCI states.

[0123] In one embodiment, the network device before sending the first command to the terminal device, further includes a third transmission module for sending a third command to the terminal device, the third command includes DCI signaling and / or a MAC CE command, Here, when the first command includes the first signaling field and the second signaling field, and both P and Q are greater than 1, the third command is used to indicate one of the first TCI states as the independent TCI state of the DL, and to indicate one of the second TCI states as the independent TCI state of the UL. When the first command includes only the first signaling field and P is greater than 1, the third command is used to indicate one of the first TCI states as the shared TCI state of the UL and the DL.

[0124] In one embodiment, in a multi-transmission point TRP / multi-channel group scenario, the first command is used to indicate at least one TCI state corresponding to each TRP identifier information / channel group, and the channel group includes a plurality of channels and / or RSs.

[0125] In one embodiment, for any one of the TRP identifier information / multi-channel groups, the first command is used to indicate the shared TCI state of the UL and the DL of the TRP identifier information / channel group, or the first command is used to indicate the independent TCI states corresponding to the UL and the DL of the TRP identifier information / channel group, respectively.

[0126] In one embodiment, the network device further includes a fourth transmission module for transmitting a fourth command to the terminal device before transmitting the first command to the terminal device, and the fourth command is used to indicate whether the first command indicates the shared TCI state or the independent TCI state for the TRP identifier information / channel group. Here, the fourth command includes DCI signaling and / or a MAC CE command.

[0127] In one embodiment, the first command includes the identifier of each of the TRP identifier information / channel group and the instruction content corresponding to each identifier, or, the first command includes the instruction content corresponding to at least one set of the TRP identifier information / channel group, and does not include the identifier of the TRP identifier information / channel group, or, the first command includes a plurality, and each of the first commands includes, respectively, the identifier of one of the TRP identifier information / channel group and the corresponding instruction content, or, the first command includes a plurality, and each of the first commands includes, respectively, the instruction content corresponding to one of the TRP identifier information / channel group, and does not include the identifier of the TRP identifier information / channel group, Here, the instruction content includes at least one of the first signaling field, the second signaling field, and the first instruction information.

[0128] In one embodiment, the first command further includes second instruction information corresponding to the identifier of the TRP identifier information / channel group and / or the instruction content in the first command, The second instruction information is used to indicate whether the identifier of the corresponding TRP identifier information / channel group and / or the instruction content corresponding to each identifier exists in the first command.

[0129] In one embodiment, the first command includes the first instruction information, When the first instruction information indicates the non-existence of the second signaling field, the first signaling field in the first command is used to indicate the shared TCI state of UL and DL, When the first indication information indicates the existence of the second signaling field, the first signaling field in the first command is used to indicate the independent TCI state corresponding to the DL, and the second signaling field in the first command is used to indicate the independent TCI state corresponding to the UL.

[0130] Adopt the network device of one or more embodiments of this application, arrange the TCI state pool, and send a first command to the terminal device. This first command is used to indicate at least one TCI state in the TCI state pool. This at least one TCI state is used to indicate the common beam information of multiple channels and / or the reference signal RS. Thereby, the terminal device is based on the first command to ri ri the uplink UL and / or down ri ri link DL can determine at least one corresponding TCI state, thereby realizing the unification of the beam indication mechanism for multiple channels and / or RS by the network device, reducing unnecessary signaling overhead, and making the beam indication mechanism more complete.

[0131] The network device according to the embodiment of this application can realize each process realized by the network device in the method embodiments of FIGS. 1 to 3. To avoid repeated description, it will not be described further here.

[0132] FIG. 5 is a schematic block diagram of a terminal device according to an embodiment of this application. As shown in FIG. 5, the terminal device is A first receiving module 510 for receiving a first command transmitted by a network device, wherein the first command is used to indicate at least one TCI state in a TCI state pool, the at least one TCI state includes a shared TCI state and / or an independent TCI state, the TCI state pool is pre-arranged by the network device, and the at least one TCI state is used to indicate common beam information of a plurality of channels and / or a reference signal RS, and the first receiving module 510 Based on the first command, the above ri ri link UL and / or down ri ri A first determining module 520 for determining the at least one TCI state corresponding to the link DL.

[0133] In one embodiment, the first command includes DCI signaling and / or a MAC CE command.

[0134] In one embodiment, the first determining module 520 When at least one of QCL type A RS, QCL type B RS, and QCL type C RS is included in the TCI state, it includes a first determining unit for determining that at least one of QCL type A RS, QCL type B RS, and QCL type C RS is used only for the DL.

[0135] In one embodiment, the first command is used to indicate one of the shared TCI states for the UL and the DL, or the first command is used to indicate the independent TCI states corresponding to the UL and the DL respectively.

[0136] In one embodiment, the terminal device Further comprising a second receiving module for receiving a second command transmitted by the network device before receiving the first command transmitted by the network device, wherein the second command is used to indicate that the first command indicates the shared TCI state or the independent TCI state for the UL and the DL, and the second command includes DCI signaling and / or a MAC CE command.

[0137] In one embodiment, the first command includes a first signaling field of P (where P is a positive integer) first TCI states, a second signaling field of Q (where Q is a positive integer) second TCI states, and at least one of first indication information for indicating whether the second signaling field exists.

[0138] In one embodiment, the terminal device further comprises a second agreement module for agreeing on a preset position or number with the network device before receiving the first command transmitted by the network device, and the preset position or number is used to identify the shared TCI state of the UL and the DL from a plurality of the TCI states, or to identify the independent TCI states corresponding to the UL and the DL respectively from a plurality of the TCI states.

[0139] In one embodiment, the first determination module 520 When the first command includes the first signaling field and the second signaling field, and both P and Q are greater than 1, a second determination unit for determining that the first TCI state corresponding to the preset position or number in the first signaling field is the independent TCI state of the DL, and determining that the second TCI state corresponding to the preset position or number in the second signaling field is the independent TCI state of the UL; When the first command includes only the first signaling field and P is greater than 1, a third determination unit for determining that the first TCI state corresponding to the preset position or number in the first signaling field is the shared TCI state of the UL and the DL.

[0140] In one embodiment, the terminal device A third receiving module for receiving a third command including DCI signaling and / or a MAC CE command transmitted by the network device before receiving the first command transmitted by the network device; Further including a second determination module for determining the independent TCI state or the shared TCI state of the UL and the DL based on the third command, Here, when the first command includes the first signaling field and the second signaling field, and both P and Q are greater than 1, the third command is used to indicate one of the first TCI states as the independent TCI state of the DL, and one of the second TCI states as the independent TCI state of the UL. When the first command includes only the first signaling field and P is greater than 1, the third command is used to indicate one of the first TCI states as the shared TCI state of the UL and the DL.

[0141] In one embodiment, in a multi-transmission point TRP / multi-channel group scenario, the first command is used to indicate at least one TCI state corresponding to each TRP identifier information / channel group, and the channel group includes a plurality of channels and / or RSs.

[0142] In one embodiment, for any one of the TRP identifier information / channel groups, the first command is used to indicate the shared TCI state of the UL and the DL of the TRP identifier information / channel group, or the first command is used to indicate the independent TCI states corresponding to the UL and the DL of the TRP identifier information / channel group, respectively.

[0143] In one embodiment, the terminal device further includes a fourth receiving module for receiving a fourth command transmitted by the network device before receiving the first command transmitted by the network device, where the fourth command is used to indicate that the TCI state indicated by the first command for the TRP identifier information / channel group is the shared TCI state or the independent TCI state, and the fourth command includes DCI signaling and / or a MAC CE command.

[0144] In one embodiment, the first determination module 520 is a fourth determination unit for determining the identifier and / or corresponding indication content of each TRP identifier information / channel group based on the first command, where the indication content includes at least one of the first signaling field, the second signaling field, and the first indication information, and includes a fifth determination unit for determining at least one TCI state corresponding to each of the TRP identifier information / channel groups based on the identifier and / or corresponding indication content of each TRP identifier information / channel group.

[0145] In one embodiment, the fourth determination unit further when the first command includes each of the TRP identifier information / channel group identifiers and the instruction content corresponding to each identifier, based on each of the TRP identifier information / channel group identifiers in the first command, determine each of the TRP identifier information / channel group identifiers and / or the corresponding instruction content respectively, when the first command includes the instruction content corresponding to at least one set of the TRP identifier information / channel group and does not include the TRP identifier information / channel group identifier, determine each of the TRP identifier information / channel group identifiers and / or the corresponding instruction content according to the order or position of each set of the instruction content in the first command, when the first command includes a plurality, and each of the first commands includes one of the TRP identifier information / channel group identifiers and the corresponding instruction content, based on each of the identifiers included in each of the first commands, determine each of the TRP identifier information / channel group identifiers and / or the corresponding instruction content respectively, when the first command includes a plurality, each of the first commands includes the instruction content corresponding to one of the TRP identifier information / channel groups and does not include the TRP identifier information / channel group identifier, it is used to determine each of the TRP identifier information / channel group identifiers and / or the corresponding instruction content based on at least one of the time domain information, frequency domain information, and code domain information of each of the first commands.

[0146] In one embodiment, the first command further includes second instruction information corresponding to the TRP identifier information / channel group identifier and / or the instruction content, the fourth determination unit further When the second instruction information indicates that the corresponding TRP identifier information / channel group identifier and / or the instruction content exist in the first command, it is determined that the first command has the TRP identifier information / channel group identifier and / or the corresponding instruction content. When the second instruction information indicates that the corresponding TRP identifier information / channel group identifier and / or the instruction content do not exist in the first command, it is used to determine that the first command does not have the TRP identifier information / channel group identifier and / or the corresponding instruction content.

[0147] In one embodiment, the first determination module a sixth determination unit for determining that the first TCI state in the first signaling field is the shared TCI state of the UL and the DL when the first instruction information indicates that the second signaling field does not exist; a seventh determination unit for determining that the first TCI state in the first signaling field is the independent TCI state corresponding to the DL and that the second TCI state in the second signaling field is the independent TCI state corresponding to the UL when the first instruction information indicates that the second signaling field exists.

[0148] As can be seen from the above embodiments, the network device arranges a TCI state pool and sends a first command to the terminal device. This first command is used to indicate at least one TCI state in the TCI state pool, and this at least one TCI state is used to indicate the common beam information of a plurality of channels and / or the reference signal RS. Thereby, the terminal device, based on the first command, the uplink UL and / or the downlink ri ri link UL and / or down ri riAt least one TCI state corresponding to the ink DL can be determined. Thereby, it is realized to unify the beam indication mechanisms for a plurality of channels and / or RS by the network device, reduce unnecessary signaling overhead, and make the beam indication mechanism more complete.

[0149] The terminal device according to the embodiment of the present application can realize each process realized by the terminal device in the method embodiments of FIGS. 1 to 3. To avoid repetition of description, it will not be described further here.

[0150] Referring to FIG. 6, FIG. 6 is a structural diagram of a network device applied in an embodiment of the present invention, which realizes the details of the beam indication method executed by the network device in the above embodiment and can achieve the same effect. As shown in FIG. 6, the network device 600 includes a processor 601, a transceiver 602, a memory 603, a user interface 604, and a bus interface. Here, In the embodiment of the present invention, the network device 600 further includes a computer program stored in the memory 603 and executable on the processor 601. When the computer program is executed by the processor 601, arranging a transmission configuration indication TCI state pool including a plurality of TCI states; transmitting a first command to a terminal device, where the first command is used to indicate at least one TCI state in the TCI state pool, the at least one TCI state is used to indicate common beam information of a plurality of channels and / or a reference signal RS, and the at least one TCI state includes a shared TCI state and / or an independent TCI state.

[0151] In FIG. 6, the bus architecture may include any number of interconnected buses and bridges, specifically linked by various circuits of one or more processors represented by processor 601 and memory represented by memory 603. The bus architecture may link various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc. Since all of these are well-known in the art, this specification does not describe them further. The bus interface provides an interface. The transceiver 602 may be a plurality of elements, i.e., including a transmitter and a receiver, and provides a unit for communicating with various other devices via a transmission medium. For different user devices, the user interface 604 may be an interface that can be externally or internally connected to the required devices, and the connected devices include, but are not limited to, a keypad, a display, a speaker, a microphone, a joystick, etc.

[0152] Processor 601 is responsible for the management of the bus architecture and general processing, and memory 603 stores the data used during the execution of the operations of processor 601.

[0153] Optionally, the first command includes downlink control information DCI signaling and / or media access control MAC control element CE commands.

[0154] Optionally, when a computer program is executed by processor 601, the step of arranging the TCI state pool for a cell set can be realized, and the cell set includes at least one cell.

[0155] Optionally, when a computer program is executed by processor 601, before arranging the TCI state pool for the cell set, the step of arranging at least one of the cell sets in the cell group arrangement information; The step of arranging the TCI state pool for the cell set in the cell group arrangement information can be realized.

[0156] Optionally, when a computer program is executed by the processor 601, The step of arranging one TCI state pool for each of the cell sets, Or, The step of arranging the TCI state pool only for the cell set including a plurality of cells can be realized.

[0157] Optionally, when a computer program is executed by the processor 601, The step of arranging the TCI state pool for at least one of the cells in the cell set, Or, The step of arranging the TCI state pool for each of the cells in the cell set can be realized.

[0158] Optionally, when a computer program is executed by the processor 601, In the first specified information, the step of arranging the TCI state pool for the cells in the cell set can be realized, and the first specified information includes at least one of cell group arrangement information, cell arrangement information of the cell, bandwidth part BWP arrangement information of the cell, physical downlink shared channel PDSCH arrangement information of the cell, and physical downlink control channel PDCCH arrangement information of the cell.

[0159] Optionally, when a computer program is executed by the processor 601, The step of arranging the TCI state pool for the cells not belonging to the cell set can be realized.

[0160] Optionally, when a computer program is executed by the processor 601, In the second specified information, the step of arranging the TCI state pool for the cells that do not belong to the cell set can be realized, and the second specified information includes at least one of the cell arrangement information of the cell, the BWP arrangement information of the cell, the PDSCH arrangement information of the cell, and the PDCCH arrangement information of the cell.

[0161] Optionally, when at least one of QCL type A RS, QCL type B RS, and QCL type C RS is included in the TCI state, at least one of QCL type A RS, QCL type B RS, and QCL type C RS is as follows ri ri used only for downlink DL.

[0162] Optionally, the at least one TCI state is used for the cell corresponding to the TCI state pool, or the at least one TCI state is used for all cells in the cell set where the cell corresponding to the TCI state pool is located.

[0163] Optionally, the first command is ri ri for uplink UL and downlink ri ri DL to indicate one of the shared TCI states, or the first command is used to indicate the independent TCI states corresponding to the UL and the DL respectively.

[0164] Optionally, when the computer program is executed by the processor 601, the step of transmitting a second command to the terminal device can be realized, and the second command is used to indicate whether the first command indicates the shared TCI state or the independent TCI state for the UL and the DL, and the second command includes DCI signaling and / or a MAC CE command.

[0165] Optionally, the first command is P (where P is a positive integer) first signaling fields of first TCI states, Q (where Q is a positive integer) second signaling fields of second TCI states, and at least one of first indication information for indicating whether the second signaling field exists.

[0166] Optionally, when a computer program is executed by the processor 601, before sending a first command to the terminal device, the step of agreeing on a preset position or number with the terminal device can be realized, and the preset position or number is used to identify the shared TCI state of the UL and the DL from a plurality of the TCI states, or to identify the independent TCI states corresponding to the UL and the DL respectively from a plurality of the TCI states.

[0167] Optionally, when a computer program is executed by the processor 601, before sending a first command to the terminal device, the step of sending a third command to the terminal device can be realized, and the third command includes DCI signaling and / or a MAC CE command, wherein, when the first command includes the first signaling field and the second signaling field and both P and Q are greater than 1, the third command is used to indicate one of the first TCI states as the independent TCI state of the DL and to indicate one of the second TCI states as the independent TCI state of the UL, when the first command includes only the first signaling field and P is greater than 1, the third command is used to indicate one of the first TCI states as the shared TCI state of the UL and the DL.

[0168] Optionally, in a multi-transmission point TRP / multi-channel group scenario, the first command is used to indicate at least one TCI state corresponding to each TRP identifier information / channel group, and the channel group includes a plurality of channels and / or RSs.

[0169] Optionally, for any one of the TRP identifier information / multi-channel groups, the first command is used to indicate the shared TCI state of the UL and the DL of the TRP identifier information / channel group, or the first command is used to indicate the independent TCI states corresponding to the UL and the DL of the TRP identifier information / channel group, respectively.

[0170] Optionally, when a computer program is executed by a processor 601, before the terminal device sends the first command, the step of sending a fourth command to the terminal device can be realized. The fourth command is used to indicate whether the first command indicates the shared TCI state or the independent TCI state for the TRP identifier information / channel group. Here, the fourth command includes DCI signaling and / or a MAC CE command.

[0171] Optionally, the first command includes an identifier of each TRP identifier information / channel group and an instruction content corresponding to each identifier. Or, the first command includes the instruction content corresponding to at least one set of the TRP identifier information / channel groups and does not include the identifier of the TRP identifier information / channel group. Or, the first command includes a plurality. Each first command includes an identifier of one of the TRP identifier information / channel groups and the corresponding instruction content. Or, The first command includes a plurality, and each of the first commands includes the instruction content corresponding to one of the TRP identifier information / channel groups, and does not include the identifier of the TRP identifier information / channel group. Here, the instruction content includes at least one of the first signaling field, the second signaling field, and the first instruction information.

[0172] Optionally, the first command further includes the identifier of the TRP identifier information / channel group and / or the second instruction information corresponding to the instruction content. The second instruction information is used to indicate whether the identifier of the TRP identifier information / channel group and / or the instruction content corresponding thereto exists in the first command.

[0173] Optionally, the first command includes the first instruction information. When the first instruction information indicates the non-existence of the second signaling field, the first signaling field in the first command is used to indicate the shared TCI state of UL and DL. When the first instruction information indicates the existence of the second signaling field, the first signaling field in the first command is used to indicate the independent TCI state corresponding to the DL, and the second signaling field in the first command is used to indicate the independent TCI state corresponding to the UL.

[0174] In the embodiment of the present application, the network device arranges a TCI state pool and sends a first command to the terminal device. This first command is used to indicate at least one TCI state in the TCI state pool, and this at least one TCI state is used to indicate the common beam information of a plurality of channels and / or the reference signal RS. Thereby, the terminal device is based on the first command to ri riINK UL and / or below ri ri It is possible to determine at least one TCI state corresponding to INK DL, thereby realizing the unification of the beam indication mechanisms for multiple channels and / or RS by the network device, reducing unnecessary signaling overhead, and making the beam indication mechanism more complete.

[0175] FIG. 7 is a block diagram of a terminal device according to another embodiment of the present invention. The terminal device 700 shown in FIG. 7 includes at least one processor 701, a memory 702, at least one network interface 704, and a user interface 703. Each assembly in the terminal device 700 is coupled via a bus system 705. As can be understood, the bus system 705 realizes the connection and communication between these assemblies. The bus system 705 further includes a data bus, a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of explanation, all the various buses in FIG. 7 are denoted as the bus system 705.

[0176] Here, the user interface 703 may include a display, a keyboard, or a click device (for example, a mouse, a trackball, a touch board, or a touch screen, etc.).

[0177] For better understanding, the memory 702 in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Here, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM) and is used as an external cache. By way of non-limiting and illustrative explanation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchlink dynamic random access memory (SLDRAM), and direct rambus random access memory (DRRAM). The memory 702 of the systems and methods described in the embodiments of the present invention is intended to include these and any other suitable types of memory, but is not limited thereto.

[0178] In some embodiments, the memory 702 stores an operating system 7021 and an application program 7022 that are executable modules or data structures, or subsets thereof, or extended sets thereof.

[0179] Here, the operating system 7021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., and is used to realize various basic services and process hardware-based tasks. The application program 7022 includes various application programs, such as a media player, a browser, etc., and is used to realize various application services. The program for realizing the method of the embodiment of the present invention may be included in the application program 7022.

[0180] In an embodiment of the present invention, the terminal device 700 further includes a computer program stored in the memory 702 and executable on the processor 701. When the computer program is executed by the processor 701, Receiving a first command transmitted by a network device, where the first command is used to instruct at least one TCI state in a TCI state pool, the at least one TCI state includes a shared TCI state and / or an independent TCI state, the TCI state pool is pre-arranged by the network device, and the at least one TCI state is used to instruct common beam information of a plurality of channels and / or a reference signal RS; Based on the first command, ri ri Determining the at least one TCI state corresponding to the uplink UL and / or the downlink DL. ri ri is realized.

[0181] The method disclosed in the embodiments of the present invention may be applied to the processor 701 or may be implemented by the processor 701. The processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by the integrated logic circuit of the hardware in the processor 701 or by the instructions in the form of software. The above-mentioned processor 701 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a ready-made field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware assemblies. Each method, step and logic block diagram disclosed in the embodiments of the present invention can be realized or executed. The general-purpose processor may be a microprocessor, or this processor may be any general processor, etc. The steps of the method disclosed in the embodiments of the present invention are completed by being executed by the hardware decoding processor, or may be directly embodied to be completed by the combination of the hardware and software modules in the decoding processor. The software module may be located in a computer-readable storage medium well-known in the art such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register, etc. This computer-readable storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702 and combines it with its hardware to complete the steps of the above method. Specifically, a computer program is stored in this computer-readable storage medium, and when the computer program is executed by the processor 701, each step of the embodiment of the above resource multiplexing method is realized.

[0182] To be understandable, these embodiments described in the embodiments of the present invention may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For the hardware implementation, the processing unit may be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field-Programmable Gate Arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions of the present invention, or a combination thereof.

[0183] For the software implementation, the techniques described in the embodiments of the present invention may be implemented by executing the modules (such as processes, functions, etc.) of the functions of the embodiments of the present invention. The software code may be stored in a memory and executed by a processor. The memory may be implemented inside or outside the processor.

[0184] Optionally, the first command includes DCI signaling and / or a MAC CE command.

[0185] Optionally, the TCI state includes at least one of a quasi-collocation QCL type A RS, a QCL type B RS, a QCL type C RS, and a QCL type D RS.

[0186] Optionally, when a computer program is executed by the processor 701, When at least one of the QCL type A RS, QCL type B RS, and QCL type C RS is included in the TCI state, the step of determining that at least one of the QCL type A RS, QCL type B RS, and QCL type C RS is used only for the DL can be realized.

[0187] Optionally, the first command is used to indicate one of the shared TCI states for the UL and the DL, or the first command is used to indicate the independent TCI states corresponding to the UL and the DL respectively.

[0188] Optionally, when a computer program is executed by the processor 701, Before receiving the first command transmitted by the network device, the step of receiving the second command transmitted by the network device can be realized. The second command is used to indicate whether the first command indicates the shared TCI state or the independent TCI state for the UL and the DL. The second command includes DCI signaling and / or a MAC CE command.

[0189] Optionally, the first command includes at least one of a first signaling field of P (where P is a positive integer) first TCI states, a second signaling field of Q (where Q is a positive integer) second TCI states, and first indication information for indicating whether the second signaling field exists.

[0190] Optionally, when a computer program is executed by the processor 701, Before receiving the first command transmitted by the network device, the step of agreeing on a preset position or number with the network device can be realized, and the preset position or number is used to identify the shared TCI state of the UL and the DL from a plurality of the TCI states, or to identify the independent TCI states corresponding to the UL and the DL respectively from a plurality of the TCI states.

[0191] Optionally, when a computer program is executed by the processor 701, when the first command includes the first signaling field and the second signaling field, and both P and Q are greater than 1, determining that the first TCI state corresponding to the preset position or number in the first signaling field is the independent TCI state of the DL, and determining that the second TCI state corresponding to the preset position or number in the second signaling field is the independent TCI state of the UL; when the first command includes only the first signaling field and P is greater than 1, the step of determining that the first TCI state corresponding to the preset position or number in the first signaling field is the shared TCI state of the UL and the DL can be realized.

[0192] Optionally, when a computer program is executed by the processor 701, before receiving the first command transmitted by the network device, receiving a third command transmitted by the network device and including DCI signaling and / or a MAC CE command; Based on the third command, the step of determining the independent TCI state or the shared TCI state of the UL and the DL can be realized, Here, when the first command includes the first signaling field and the second signaling field, and both P and Q are greater than 1, the third command is used to indicate one of the first TCI states as the independent TCI state of the DL and to indicate one of the second TCI states as the independent TCI state of the UL. When the first command includes only the first signaling field and P is greater than 1, the third command is used to indicate one of the first TCI states as the shared TCI state of the UL and the DL.

[0193] Optionally, in a multi-transmission point TRP / multi-channel group scenario, the first command is used to indicate at least one TCI state corresponding to each TRP identifier information / channel group, and the channel group includes a plurality of channels and / or RSs.

[0194] Optionally, for any one of the TRP identifier information / channel groups, the first command is used to indicate the shared TCI state of the UL and the DL of the TRP identifier information / channel group, or the first command is used to indicate the independent TCI states corresponding to the UL and the DL of the TRP identifier information / channel group, respectively.

[0195] Optionally, when a computer program is executed by a processor 701, Before receiving the first command transmitted by the network device, the step of receiving the fourth command transmitted by the network device can be realized. The fourth command is used to indicate whether the first command indicates the shared TCI state or the independent TCI state for the TRP identifier information / channel group. The fourth command includes DCI signaling and / or a MAC CE command.

[0196] Optionally, when the computer program is executed by the processor 701, Based on the first command, determining each of the TRP identifier information / channel group identifier and / or the corresponding instruction content, wherein the instruction content includes at least one of the first signaling field, the second signaling field, and the first instruction information; Based on each of the TRP identifier information / channel group identifier and / or the corresponding instruction content, determining each of the TRP identifier information / channel group identifier and / or the corresponding at least one TCI state can be realized.

[0197] Optionally, when the computer program is executed by the processor 701, When the first command includes each of the TRP identifier information / channel group identifier and the instruction content corresponding to each identifier, based on each of the TRP identifier information / channel group identifiers in the first command, determining each of the TRP identifier information / channel group identifier and / or the corresponding instruction content respectively; When the first command includes the instruction content corresponding to at least one set of the TRP identifier information / channel group and does not include the identifier of the TRP identifier information / channel group, according to the arrangement order or position of each set of the instruction content in the first command, determining each of the TRP identifier information / channel group identifier and / or the corresponding instruction content; When the first command includes a plurality, and each of the first commands includes an identifier of one of the TRP identifier information / channel group and the corresponding instruction content, based on each of the identifiers included in each of the first commands, determining each of the TRP identifier information / channel group identifier and / or the corresponding instruction content respectively; When the first command includes a plurality, each of the first commands includes instruction content corresponding to one of the TRP identifier information / channel groups, and does not include the identifier of the TRP identifier information / channel group, based on at least one of the time domain information, frequency domain information, and code domain information of each of the first commands, determining the identifier of each of the TRP identifier information / channel groups and / or the corresponding instruction content can be realized.

[0198] Optionally, the first command further includes second instruction information corresponding to the identifier of the TRP identifier information / channel group and / or the instruction content. The above determining the instruction content corresponding to each of the TRP identifier information / channel groups based on the first command is When the second instruction information indicates that the identifier of the TRP identifier information / channel group corresponding to the first command and / or the corresponding instruction content exist, determining that the identifier of the TRP identifier information / channel group corresponding to the first command and / or the corresponding instruction content exist. When the second instruction information indicates that the identifier of the TRP identifier information / channel group corresponding to the first command and / or the corresponding instruction content do not exist, further including determining that the identifier of the TRP identifier information / channel group corresponding to the first command and / or the corresponding instruction content do not exist.

[0199] Optionally, when a computer program is executed by the processor 701, When the first instruction information indicates that the second signaling field does not exist, determining that the first TCI state in the first signaling field is the shared TCI state of the UL and the DL. When the first indication information indicates the existence of the second signaling field, determine that the first TCI state in the first signaling field is the independent TCI state corresponding to the DL, and determine that the second TCI state in the second signaling field is the independent TCI state corresponding to the UL. These steps can be realized.

[0200] The terminal device 700 can realize each process realized by the terminal device in the foregoing embodiments. To avoid repetition of the description, it will not be described herein again.

[0201] In the embodiments of the present application, the network device arranges a TCI state pool and sends a first command to the terminal device. This first command is used to indicate at least one TCI state in the TCI state pool, and this at least one TCI state is used to indicate the common beam information of a plurality of channels and / or the reference signal RS. Thereby, the terminal device can determine at least one TCI state corresponding to the uplink UL and / or the downlink DL based on the first command. Thereby, it realizes the unification of the beam indication mechanism for a plurality of channels and / or RS by the network device, reduces unnecessary signaling overhead, and makes the beam indication mechanism more complete. ri ri link UL and / or down ri ri link DL.

[0202] The embodiments of the present application further provide a readable storage medium, on which a program or instruction is stored. When this program or instruction is executed by a processor, it realizes each process of the embodiment of the beam indication method executed by the above network device and can achieve the same technical effect. To avoid repetition of the description, it will not be described herein again.

[0203] Here, the processor is the processor in the network device described in the above embodiments. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0204] Embodiments of the present application further provide a readable storage medium, on which a program or instruction is stored. When this program or instruction is executed by a processor, each process of the embodiment of the beam indication method executed by the above terminal device can be realized, and the same technical effect can be achieved. To avoid repetition of the description, it will not be described further here.

[0205] Here, the processor is the processor in the terminal device described in the above embodiments. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0206] Embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to realize each process of the embodiment of the beam indication method, and the same technical effect can be achieved. To avoid repetition of the description, it will not be described further here.

[0207] It should be noted that in this specification, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive "including", whereby a process, method, article or apparatus comprising a series 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. In the case of an element limited by the phrase "comprising one...", in the absence of further limitations, it is not excluded that there are other same elements in the process, method, article or apparatus comprising this element. It should be pointed out that the scope of the methods and devices in the embodiments of this application is not limited to performing functions in the order illustrated or discussed, but may include performing functions in a basically simultaneous manner or in the reverse order based on the functions involved. For example, a method described in a different procedure from the one described can be executed, and various steps can be added, omitted or combined. Also, features described with reference to some examples can be combined in other examples.

[0208] As can be clearly understood by those skilled in the art from the description of the above embodiments, the methods of the above examples can be implemented in the form of software and the necessary general-purpose hardware platform. Of course, it may also be implemented by hardware, but in many cases, the former is a more preferred embodiment. Based on such an understanding, the technical solution of this application may, in essence, or the part that has contributed to the prior art, be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions for causing a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of this application.

[0209] The above has described the embodiments of the present application while associating with the drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely exemplary and not restrictive. Those skilled in the art can also implement in many forms based on the suggestion of the present application, as long as they do not deviate from the spirit of the present application and the scope of the claims, and all belong to the protection scope of the present application.

Claims

1. A beam indication method, executed by a network device, the beam indication method comprising: arranging a transmission configuration indication (TCI) state pool including a plurality of TCI states; transmitting a first command to a terminal device, the first command being used to indicate at least one TCI state in the TCI state pool, the at least one TCI state being used to indicate common beam information of a plurality of channels and / or reference signals (RSs), the at least one TCI state including a shared TCI state and / or an independent TCI state; the first command being used to indicate one of the shared TCI states for the uplink (UL) and the downlink (DL), or the first command being used to respectively indicate the independent TCI states corresponding to the UL and the DL; the first command being a media access control (MAC) control element (CE) command; the first command including first indication information for indicating whether a second signaling field exists; the first command further including at least one of a first signaling field of P (where P is a positive integer) first TCI states and a second signaling field of Q (where Q is a positive integer) second TCI states; A beam indication method.

2. The beam indication method according to claim 1, wherein the first command further includes downlink control information (DCI) signaling.

3. The beam indication method according to claim 1 or 2, wherein when at least one of quasi co-location (QCL) type A RS, QCL type B RS, and QCL type C RS is included in the TCI state, at least one of QCL type A RS, QCL type B RS, and QCL type C RS is only used for the downlink (DL).

4. Before transmitting the first command to the terminal device, further including transmitting a second command to the terminal device, the second command being used to indicate whether the first command indicates the shared TCI state or the independent TCI state for the UL and the DL, the second command including DCI signaling and / or a MAC CE command.

5. A beam indication method, executed by a terminal device, the beam indication method comprising: receiving a first command transmitted by a network device, the first command being used to indicate at least one TCI state in a TCI state pool, the at least one TCI state including a shared TCI state and / or an independent TCI state, the TCI state pool being pre-configured by the network device, and the at least one TCI state being used to indicate common beam information of a plurality of channels and / or a reference signal RS; determining, based on the first command, the at least one TCI state corresponding to an uplink UL and / or a downlink DL; the first command being used to indicate one shared TCI state for the uplink UL and the downlink DL, or the first command being used to respectively indicate the independent TCI states corresponding to the uplink UL and the downlink DL; the first command being a media access control MAC control element CE command; the first command including first indication information for indicating whether a second signaling field exists; the first command further including at least one of a first signaling field of P (where P is a positive integer) first TCI states and a second signaling field of Q (where Q is a positive integer) second TCI states; A beam indication method.

6. The beam indication method according to claim 5, wherein the first command further includes DCI signaling.

7. Determining, based on the first command, the at least one TCI state corresponding to the uplink UL and / or the downlink DL includes: when at least one of QCL type A RS, QCL type B RS, and QCL type C RS is included in the TCI state, determining that at least one of QCL type A RS, QCL type B RS, and QCL type C RS is used only for the downlink DL. The beam indication method according to claim 5 or 6.

8. Before receiving the first command transmitted by the network device, Further comprising receiving a second command transmitted by the network device, wherein the second command is used to indicate that the first command instructs the shared TCI state or the independent TCI state for the uplink UL and the downlink DL, and the second command includes DCI signaling and / or a MAC CE command. The beam indication method according to claim 7.

9. Determining the at least one TCI state corresponding to the uplink UL and / or the downlink DL based on the first command includes: When the first indication information indicates that the second signaling field does not exist, determining that the first TCI state in the first signaling field is the shared TCI state for the uplink UL and the downlink DL; When the first indication information indicates that the second signaling field exists, determining that the first TCI state in the first signaling field is the independent TCI state corresponding to the downlink DL, and determining that the second TCI state in the second signaling field is the independent TCI state corresponding to the uplink UL. The beam indication method according to claim 5.

10. A network device, comprising a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein when the program or instruction is executed by the processor, the steps of the beam indication method according to any one of claims 1 to 4 are realized.

11. A terminal device, comprising a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein when the program or instruction is executed by the processor, the steps of the beam indication method according to any one of claims 5 to 9 are realized.

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