Beam indication method, network device and terminal device

Abstract

The application discloses a beam indication method, a network device and a terminal device, and belongs to the technical field of communication. The method comprises the following steps: configuring a transmission configuration indication (TCI) state pool; the TCI state pool comprises a plurality of TCI states; a first command is sent to a terminal device, the first command is used for indicating at least one TCI state in the TCI state pool, and the at least one TCI state is used for indicating common beam information of a plurality of channels and / or reference signals (RSs); and the at least one TCI state comprises a shared TCI state and / or an independent TCI state. The technical scheme unifies the beam indication mechanism of the network device for the plurality of channels and / or RSs, reduces unnecessary signaling overhead, and makes the beam indication mechanism more perfect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to a beam indication method, a network device and a terminal device. BACKGROUND

[0002] In 5G NR (New Radio), analog beamforming is transmitted in full bandwidth, and on each panel of a high-frequency antenna array, each polarization-direction array element can only transmit analog beams in a time-division multiplexing manner. The analog beamforming weight is realized by adjusting the parameters of radio frequency front-end phase shifters and the like. In the academic and industrial circles, a polling method is usually used to train the analog beamforming vector, that is, each polarization-direction array element of each antenna panel transmits a training signal (i.e., a candidate beamforming vector) in turn at a predetermined time in a time-division multiplexing manner, and the terminal feeds back a beam report after measurement, which is used by the network side to implement analog beam transmission when transmitting services next time.

[0003] The content of the beam report usually includes the optimal beam identifiers and the measured received power of each transmission beam. When performing beam measurement, the network side configures an RS resource set (Reference Signal resource set), which 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 and reports the optimal at least one measurement result to the network side, including the SSBRI (SS / PBCH Block Resource indicator) or CRI (CSI-RS resource indicator) and the L1-RSRP / L1-SINR. The report content reflects at least one optimal beam and its quality, which is used by the network side to determine the beam information used to transmit a channel or a signal with the UE.

[0004] After beam measurement and beam reporting, the network side can perform beam indication on the channels or reference signals of the downlink and uplink, which is used to establish a beam link between the network side and the UE and realize the transmission of the channels or reference signals.

[0005] However, the beam indication mechanisms for various channels and reference signals in the prior art are different, and require a large signaling overhead, and a better common beam information indication method is not provided for multiple channels and / or RS. SUMMARY

[0006] Embodiments of the present application provide a beam indication method, network device and terminal device, which can solve the problems of imperfect beam indication method and large signaling overhead.

[0007] In a first aspect, embodiments of the present application provide a beam indication method, which is performed by a network device, and includes:

[0008] configuring a transmission configuration indication (TCI) state pool; the TCI state pool includes a plurality of TCI states;

[0009] 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); the at least one TCI state includes a shared TCI state and / or an independent TCI state.

[0010] In a second aspect, embodiments of the present application provide a beam indication method, which is performed by a terminal device, and includes:

[0011] receiving a first command sent 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; the at least one TCI state being used to indicate common beam information of a plurality of channels and / or reference signals (RS);

[0012] determining the at least one TCI state corresponding to uplink (UL) and / or downlink (DL) according to the first command.

[0013] In a third aspect, embodiments of the present application provide a network device, which includes:

[0014] a first configuration module configured to configure a transmission configuration indication (TCI) state pool; the TCI state pool includes a plurality of TCI states;

[0015] The first sending module is configured to send a first command to a terminal device, where the first command is used to indicate at least one TCI state in a TCI state pool, and the at least one TCI state is used to indicate common beam information of multiple channels and / or reference signals (RSs); and the at least one TCI state includes a shared TCI state and / or an independent TCI state.

[0016] In a fourth aspect, an embodiment of the present application provides a terminal device, which comprises:

[0017] The first receiving module is configured to receive 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, and the at least one TCI state includes a shared TCI state and / or an independent TCI state; the TCI state pool is pre-configured by the network device; and the at least one TCI state is used to indicate common beam information of multiple channels and / or reference signals (RSs).

[0018] The first determining module is configured to determine the at least one TCI state corresponding to uplink (UL) and / or downlink (DL) according to the first command.

[0019] In a fifth aspect, an embodiment of the present application provides a network device, which comprises a processor, a memory, and a program or instruction stored in the memory and executable on the processor, and when the program or instruction is executed by the processor, the steps of the beam indication method in the first aspect are implemented.

[0020] In a sixth aspect, an embodiment of the present application provides a readable storage medium, which stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the beam indication method in the first aspect are implemented.

[0021] In a seventh aspect, an embodiment of the present application provides a terminal device, which comprises a processor, a memory, and a program or instruction stored in the memory and executable on the processor, and when the program or instruction is executed by the processor, the steps of the beam indication method in the second aspect are implemented.

[0022] In an eighth aspect, an embodiment of the present application provides a readable storage medium, which stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the beam indication method in the second aspect are implemented.

[0023] In a ninth aspect, an embodiment of the present application provides a chip, which comprises a processor and a communication interface, the communication interface is coupled with the processor, and the processor is configured to run a program or instruction to implement the beam indication method in the first aspect or the second aspect.

[0024] In the embodiments of the present application, the network device configures a TCI state pool and sends a first command to the 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 multiple channels and / or reference signals (RSs), so that the terminal device can determine at least one TCI state corresponding to uplink (UL) and / or downlink (DL) according to the first command, thereby making the network device realize unified beam indication mechanism for multiple channels and / or RSs, reducing unnecessary signaling overhead, and making the beam indication mechanism more perfect. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic flow chart of a beam indication method according to an embodiment of the present application;

[0026] Figure 2 is a schematic flow chart of a beam indication method according to another embodiment of the present application;

[0027] Figure 3 is a schematic swim lane diagram of a beam indication method according to an embodiment of the present application;

[0028] Figure 4 is a schematic block diagram of a network device according to an embodiment of the present application;

[0029] Figure 5 is a schematic block diagram of a terminal device according to an embodiment of the present application;

[0030] Figure 6 is a schematic structural diagram of a network device according to an embodiment of the present application;

[0031] Figure 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0033] The technical solutions of the present application 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 Wireless), GPRS (General Packet Radio Service), LTE (Long Term Evolution), NR (New Radio), etc.

[0034] The UE, also known as a mobile terminal, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile, 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 can be a cellular 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, a vehicle-mounted 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.

[0035] The network device can be a device for communicating with a mobile device. The network device can be a BTS (Base Transceiver Station) in GSM (Global System of Mobile communication) or CDMA (Code Division Multiple Access), can be a NB (NodeB) in WCDMA (Wideband Code Division Multiple Access), can be an eNB or eNodeB (Evolutional Node B) or an access point in LTE (Long Term Evolution), or can be a vehicle-mounted 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.

[0036] The beam indication provided by the embodiments of the present application will be described in detail below in combination with the accompanying drawings, specific embodiments and application scenarios.

[0037] Figure 1 is a schematic flowchart of a beam indication method according to an embodiment of the present application. As shown in Figure 1 The beam indication method is performed by a network device and includes the following steps:

[0038] S102, configuring a TCI (Transmission Configuration Indication) state pool, the TCI state pool including a plurality of TCI states.

[0039] The TCI state pool can be represented as TCI state pool.

[0040] S104, 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 RSs.

[0041] The first command includes DCI (Downlink Control Information) signaling and / or MAC (Media Access Control) CE (Control Element) commands. The at least one TCI state includes a shared TCI state (i.e., joint TCI state) and / or an independent TCI state (i.e., separate TCI state).

[0042] Figure 2 is a schematic flow chart of a beam indication method according to another embodiment of the present application. As shown in Figure 2 the beam indication method is performed by a terminal device, comprising the following steps:

[0043] S202, receiving a first command sent 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 being used to indicate common beam information of a plurality of channels and / or RSs.

[0044] wherein the TCI state pool is pre-configured by the network device, and the at least one TCI state comprises a shared TCI state and / or an independent TCI state.

[0045] S204, determining at least one TCI state corresponding to UL (Uplink) and / or DL (Downlink) according to the first command.

[0046] Figure 3 is a schematic swim lane chart of a beam indication method according to an embodiment of the present application. As shown in Figure 3 the beam indication method is performed by a network device and a terminal device, comprising the following steps:

[0047] S301, the network device configures a TCI state pool.

[0048] S302, the network device issues a first command to the terminal device.

[0049] wherein the first command comprises 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, the at least one TCI state being used to indicate common beam information of a plurality of channels and / or RSs.

[0050] S303, the terminal device receives the first command.

[0051] S304, the terminal device determines at least one TCI state corresponding to UL and / or DL according to the first command.

[0052] As can be seen from the above embodiments, the network device configures a TCI state pool and sends a first command to the 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 multiple channels and / or reference signals (RSs), so that the terminal device can determine at least one TCI state corresponding to uplink (UL) and / or downlink (DL) according to the first command, thereby realizing unified beam indication mechanism of the network device for the multiple channels and / or RSs, reducing unnecessary signaling overhead, and making the beam indication mechanism more perfect.

[0053] The above steps in the beam indication method are described in detail below.

[0054] In one embodiment, when the network device configures the TCI state pool, the network device can configure the TCI state pool for a cell set, wherein the cell set includes at least one cell.

[0055] In one embodiment, before the network device configures the TCI state pool for the cell set, the network device can configure at least one cell set in cell group configuration information. Based on this, the network device can configure the TCI state pool for the cell set in the cell group configuration information.

[0056] In one embodiment, if the network device only configures one cell set, the network device configures one TCI state pool for the cell set. If the network device configures multiple cell sets, the network device can configure one TCI state pool for each of the multiple cell sets, or the network device only configures a TCI state pool for a cell set including multiple cells, and does not configure a TCI state pool for a cell set including only one cell.

[0057] In one embodiment, when the network device configures the TCI state pool for the cell set, the network device can configure a TCI state pool for at least one cell in the cell set, or configure a TCI state pool for each cell in the cell set. When the network device configures a TCI state pool for at least one cell in the cell set, the at least one cell can be referred to as a reference cell, and other cells in the cell set use the TCI state pool of the at least one cell. When the network device configures a TCI state pool for each cell in the cell set, the TCI state pools of the cells are independent of each other.

[0058] In one embodiment, the network device configures a TCI state pool for a cell in the cell set in the first specified information.

[0059] The first specified information includes at least one of the following: cell group configuration information (such as CellGroupConfig), cell configuration information of the cell, BWP (Bandwidth Part) configuration information of the cell, PDSCH (Physical Downlink Shared Channel) configuration information of the cell, and PDCCH (Physical Downlink Control Channel) configuration information of the cell.

[0060] In one embodiment, considering that there is at least one cell that does not belong to the cell set configured by the network device, the network device can configure a TCI state pool for the cell(s) that do not belong to the cell set.

[0061] In one embodiment, the network device configures the TCI state pool for the cell that does not belong to the cell set in the second specified information.

[0062] The second specified information includes at least one of the following: cell configuration information of the cell, BWP configuration information of the cell, PDSCH configuration information of the cell, and PDCCH configuration information of the cell.

[0063] As can be seen from one or more of the above embodiments, the beam indication method in the present application can provide a flexible and complete configuration method of the TCI state pool, and make the beam indication mechanism of the network device for multiple channels and / or RSs more perfect.

[0064] In one embodiment, the TCI state includes at least one of the following: a QCL (Quasi-colocation) type A RS, a QCL type B RS, a QCL type C RS, and a QCL type D RS.

[0065] In one embodiment, in the case where at least one of the QCL type A RS, the QCL type B RS, and the QCL type C RS is included in the TCI state, the at least one of the QCL type A RS, the QCL type B RS, and the QCL type C RS is only used for DL. In the case where at least one of the QCL type A RS, the QCL type B RS, and the QCL type C RS is included in the TCI state and a QCL type D RS is included, the at least one of the QCL type A RS, the QCL type B RS, and the QCL type C RS in the at least one TCI state indicated by the first command is only used for DL, while the QCL type D RS can be used for DL and UL. After the terminal device receives the first command, according to the first command, the terminal device determines whether each RS in the TCI state indicated by the first command is used for DL and UL or only for DL.

[0066] For example, assuming that the first command indicates a shared TCI state for DL and UL from the TCI state pool, and the shared TCI state includes a QCL Type-A RS and a QCL Type-D RS, the terminal device determines, according to the first command, that the QCL Type-D RS is used for DL and UL, and the QCL Type-A RS is used for DL only.

[0067] For another example, assuming that the first command indicates an independent TCI state for DL from the TCI state pool, and the independent TCI state includes a QCL Type-A RS and a QCL Type-D RS, the terminal device determines, according to the first command, that the QCL Type-A RS and the QCL Type-D RS can be used for DL. Assuming that the first command indicates an independent TCI state for UL from the TCI state pool, and the independent TCI state includes a QCL Type-A RS and a QCL Type-D RS, the terminal device determines, according to the first command, that the QCL Type-D RS is used for UL, and the QCL Type-A RS is not applicable to UL.

[0068] In this embodiment, after receiving the first command, the terminal device can determine, according to the first command, whether each RS in the at least one TCI state indicated by the first command is used for DL only or is used for both DL and UL.

[0069] In one embodiment, the at least one TCI state indicated by the first command is used for a cell corresponding to the TCI state pool; or the at least one TCI state indicated by the first command is used for all cells in a cell set in which the cell corresponding to the TCI state pool is located.

[0070] In this embodiment, there is a corresponding relationship between the TCI state pool and the cell. For example, the network device configures TCI state pool 1 for cell a and TCI state pool 2 for cell b, and the at least one TCI state in TCI state pool 1 indicated by the first command is used for cell a corresponding to TCI state pool 1 or for all cells in a cell set in which cell a is located.

[0071] In one embodiment, the first command is used to indicate a shared TCI state for UL and DL. After receiving the first command, the terminal device determines that the TCI state indicated by the first command is shared by UL and DL.

[0072] Alternatively, the first command is used to indicate respective independent TCI states corresponding to UL and DL respectively. After receiving the first command, the terminal device determines that the plurality of TCI states indicated by the first command are used for UL and DL respectively. In an embodiment, before the network device sends the first command to the terminal device, the network device can first send a second command, which is used to indicate whether the first command indicates shared TCI states or independent TCI states for UL and DL. The second command includes DCI signaling and / or MAC CE command.

[0073] The terminal device first receives the second command issued by the network device, and according to the second command, it can be determined whether the first command indicates shared TCI states or independent TCI states. After receiving the second command, the terminal device receives the first command issued by the network device, and according to the first command, it determines the shared TCI states of UL and DL or the independent TCI states of UL and DL.

[0074] In this embodiment, the network device indicates through the second command whether the first command indicates shared TCI states or independent TCI states for UL and DL, so that the two indication modes of the first command can be switched (i.e., switch) through the second command, thereby facilitating the terminal device to determine at least one TCI state corresponding to UL and / or DL according to the second command and the first command, and perfecting the beam indication mechanism of multiple channels / RSs.

[0075] In an embodiment, the first command includes at least one of the following:

[0076] a first signaling field of P first TCI states; P is a positive integer;

[0077] a second signaling field of Q second TCI states; Q is a positive integer;

[0078] first indication information used to indicate whether the second signaling field exists.

[0079] In this embodiment, in the case where 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 states of UL and DL. 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 DL, and the second signaling field in the first command is used to indicate the independent TCI state corresponding to UL.

[0080] 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 as described above, and according to the indication content of the first command, that is, according to whether the second signaling field exists, the terminal device can determine whether the first command indicates a shared TCI state or independent TCI states of UL and DL.

[0081] Specifically, for a single TRP identifier information / channel group, if the first indication information indicates that the second signaling field does not exist, the terminal device can determine that the first command indicates a shared TCI state of UL and DL of the TRP identifier information / channel group. If the first indication information indicates that the second signaling field exists, the terminal device can determine that the first signaling field in the first command indicates an independent TCI state of DL of the TRP identifier information / channel group, and the second signaling field in the first command indicates an independent TCI state corresponding to UL of the TRP identifier information / channel group.

[0082] For example, in the first command, the first indication information is 1 bit. When the 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 indicates an independent TCI state of DL, and the second signaling field indicates an independent TCI state of UL. When the bit is 0, it indicates that the second signaling field does not exist in the first command. At this time, the first signaling field in the first command indicates a shared TCI state of DL and UL.

[0083] In one embodiment, for a single TRP identifier information / channel group, if the first indication information indicates that the second signaling field does not exist, and P in the first signaling field is 1, that is, the first signaling field only indicates one first TCI state, the terminal device can determine that the first TCI state indicated by the first signaling field is a shared TCI state of UL and DL of the TRP identifier information / channel group. If the first indication information indicates that the second signaling field exists, and P and Q in the first signaling field are both 1, that is, the first signaling field only indicates one first TCI state, and the second signaling field only indicates one second TCI state, the terminal device can determine that the first TCI state indicated by the first signaling field is an independent TCI state of DL of the TRP identifier information / channel group, and the second TCI state indicated by the second signaling field is an independent TCI state of UL of the TRP identifier information / channel group.

[0084] In one embodiment, if P and Q in the indication content of the first command are both greater than 1, the shared TCI state or independent TCI states of UL and DL can be determined in any of the following ways.

[0085] In one approach, the network device and the terminal device agree on a preset position or number in advance, which is used to locate the shared TCI state of UL and DL from a plurality of TCI states, or to locate the respective independent TCI state of UL and DL from a plurality of TCI states.

[0086] In the case where 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, the terminal device determines that the first TCI state corresponding to the preset position or number in the first signaling field is the independent TCI state of DL, and determines that the second TCI state corresponding to the preset position or number in the second signaling field is the independent TCI state of UL. If the first command includes only a first signaling field of P first TCI states, and P is greater than 1, the terminal device determines 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.

[0087] In another approach, before the network device sends 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.

[0088] In the case where 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 the independent TCI state of DL, and to indicate one of the Q second TCI states as the independent TCI state of UL.

[0089] In the case where the first command includes only a 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 the shared TCI state of UL and DL.

[0090] The terminal device first receives the third command sent by the network device before receiving the first command. According to the third command and the first command, the terminal device determines the independent TCI state or the shared TCI state of UL and DL.

[0091] 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 the TRP identification information / channel group. The channel group includes a plurality of channels and / or RSs.

[0092] In an embodiment, for any TRP identification information / multi-channel group, the first command is used to indicate the shared TCI state of the UL and the DL of the TRP identification information / channel group; or the first command is used to indicate the respective independent TCI state of the UL and the DL of the TRP identification information / channel group.

[0093] In an embodiment, before the network device sends the first command to the terminal device, the network device can send a fourth command to the terminal device. For any TRP identification information / multi-channel group, the fourth command is used to indicate whether the first command indicates the shared TCI state or the independent TCI state for the TRP identification information / channel group. The fourth command includes DCI signaling and / or MAC CE command.

[0094] The terminal device first receives the fourth command sent by the network device before receiving the first command. For any TRP identification information / multi-channel group, according to the fourth command, it can be determined whether the first command indicates the shared TCI state or the independent TCI state for the TRP identification information / channel group. Then, after receiving the first command, according to the first command, it can be determined the shared TCI state of the UL and the DL of the TRP identification information / channel group, or the respective independent TCI state of the UL and the DL.

[0095] In the multi-TRP / multi-channel group scenario, for any TRP identification information / channel group, the first command can include at least one of the following:

[0096] A first signaling field of P first TCI states; P is a positive integer;

[0097] A second signaling field of Q second TCI states; Q is a positive integer;

[0098] First indication information used to indicate whether the second signaling field exists.

[0099] In this embodiment, for any TRP identification information / channel group, 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 the UL and the DL of the corresponding TRP identification 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 identification 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 identification information / channel group.

[0100] The terminal device determines, according to the indication content of the first command, i.e., according to whether the second signaling field exists, whether the first command indicates a shared TCI state or independent TCI states of UL and DL. Specifically, for any TRP identification information / channel group, if the first indication information indicates that the second signaling field does not exist, the terminal device can determine that the first command indicates a shared TCI state of UL and DL of the corresponding TRP identification information / channel group. If the first indication information indicates that the second signaling field exists, the terminal device can determine that the first signaling field in the first command indicates an independent TCI state of DL of the corresponding TRP identification information / channel group, and determine that the second signaling field in the first command indicates an independent TCI state corresponding to UL of the corresponding TRP identification information / channel group.

[0101] Taking a multi-TRP scenario as an example. It is assumed that the first command includes indication content corresponding to TRP1 and TRP2 respectively, and the indication content includes at least one of the above-mentioned first signaling field, second signaling field, and first indication information, and the indication content corresponding to TRP1 and TRP2 respectively includes the first indication information. If the first indication information in the indication 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 indication content corresponding to TRP1 indicates a shared TCI state of UL and DL of TRP1. If the first indication information in the indication content corresponding to TRP2 indicates that the second signaling field exists, the terminal device can determine that the first signaling field in the indication content corresponding to TRP2 indicates an independent TCI state of DL of TRP2, and determine that the second signaling field in the indication content corresponding to TRP2 indicates an independent TCI state corresponding to UL of TRP2.

[0102] In a multi-TRP / multi-channel group scenario, for the case where the first command includes indication content corresponding to TRP identification information / channel groups, and the indication content includes first indication information, according to whether the first indication information indicates that the second signaling field exists, and the number of P and Q is different, the terminal device determines the manner of TCI state corresponding to the TRP identification information / channel group.

[0103] Taking TRP1 in a multi-TRP / multi-channel group scenario as an example. If the first indication information in the indication content corresponding to TRP1 indicates that the second signaling field does not exist, and P in the first signaling field is 1, that is, the first signaling field only indicates 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 the DL of TRP1. If the first indication information indicates that the second signaling field exists, and P and Q in the first signaling field are both 1, that is, the first signaling field only indicates one first TCI state, and the second signaling field only indicates 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.

[0104] If P and Q in the indication content corresponding to TRP1 are both greater than 1, the shared TCI state or the independent TCI state of the UL and the DL of TRP1 can be determined in the following any manner.

[0105] In one manner, the network device and the terminal device agree on a preset position or number in advance, which is used to locate the shared TCI state of the UL and the DL from a plurality of TCI states, or to locate the independent TCI state corresponding to the UL and the DL from a plurality of TCI states.

[0106] In the case where the network device and the terminal device agree on the preset position or number, after the terminal device receives the first command, if the first command includes the first signaling field of P first TCI states and the second signaling field of Q second TCI states, and P and Q are both greater than 1, the terminal device determines 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 of TRP1, and determines 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 of TRP1. If the first command only includes the first signaling field of P first TCI states, and P is greater than 1, the terminal device determines 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 of TRP1.

[0107] In another manner, before the network device sends 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.

[0108] In a case where the indication content of the TRP1 includes the first signaling field of the P first TCI states and the second signaling field of the 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 an independent TCI state of the DL of the TRP1, and indicate one of the Q second TCI states as an independent TCI state of the UL of the TRP1.

[0109] In a case where the indication content of the TRP1 includes only the first signaling field of the 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 the UL and the DL of the TRP1.

[0110] It should be noted that the above TRP1 is only an example, and for any TRP identification information or channel group in the multi-TRP / multi-channel group scenario, the determination manner of the TRP1 can be used to determine the TCI state corresponding to the TRP identification information or the channel group, which will not be described herein again.

[0111] After receiving the first command issued by the network device, the terminal device first determines the identification and / or indication content corresponding to the TRP identification information / channel group according to the first command, and then determines the TCI state corresponding to the TRP identification information / channel group according to the identification and / or indication content corresponding to the TRP identification information / channel group. The indication content includes at least one of the first signaling field, the second signaling field, and the first indication information.

[0112] In an embodiment, for any TRP identification information / multi-channel group, when the first command indicates the TCI state for each TRP identification information / multi-channel group, the indication manner can be any one of the following:

[0113] Manner one, the first command includes the identification of each TRP identification information / channel group and the indication content corresponding to each identification.

[0114] If the first command is indicated in the above manner one, after receiving the first command, the terminal device can determine the identification and / or indication content corresponding to each TRP identification information / channel group according to the identification of each TRP identification information / channel group in the first command.

[0115] Manner two, the first command includes the indication content corresponding to at least one group of TRP identification information / channel groups, and does not include the identification of the TRP identification information / channel group.

[0116] If the first command is indicated in the above-described manner two, after the terminal device receives the first command, the terminal device can determine the respective corresponding identifiers and / or indication contents of each TRP identifier information / channel group according to the arrangement order or position of each group of indication contents in the first command.

[0117] Taking TRP identifier information as an example, assuming that the first command includes two groups of indication contents, but does not include TRP identifier information, and the two groups of indication contents are sequentially represented as group A indication content and group B indication content, after the terminal device receives the first command, the terminal device determines that the group A indication content is the identifier and / or indication content corresponding to TRP1 (TRP identifier information), and determines that the group B indication content is the identifier and / or indication content corresponding to TRP2 (TRP identifier information) according to the arrangement order of each group of indication contents in the first command.

[0118] Manner three: the first command includes multiple first commands, and each first command includes an identifier of a TRP identifier information / channel group and corresponding indication content.

[0119] If the first command is indicated in the above-described manner three, after the terminal device receives the first command, the terminal device can determine the respective corresponding identifiers and / or indication contents of each TRP identifier information / channel group according to the identifiers of each TRP identifier information / channel group included in each first command.

[0120] Manner four: the first command includes multiple first commands, and each first command includes corresponding indication content of a TRP identifier information / channel group, and does not include an identifier of the TRP identifier information / channel group.

[0121] If the first command is indicated in the above-described manner four, after the terminal device receives the first command, the terminal device can determine the respective corresponding identifiers and / or indication contents of each TRP identifier information / channel group according to at least one of time domain information, frequency domain information, and code domain information of each first command.

[0122] In this embodiment, the indication content includes at least one of a first signaling field of P first TCI states, a second signaling field of Q second TCI states, and first indication information used to indicate whether the second signaling field exists. Wherein, P and Q are both positive integers.

[0123] In one embodiment, the first command further includes second indication information corresponding to the identifier of the TRP identifier information / channel group and / or the indication content, and the second indication information is used to indicate whether the corresponding identifier of the TRP identifier information / channel group and / or the corresponding indication content exists in the first command. After the terminal device receives the first command, the terminal device can determine whether the corresponding identifier of the 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 according to the second indication information.

[0124] Specifically, in a case where the first command includes the TRP identification information / channel group identification and the indication content corresponding to each identification, if the second indication information indicates that the corresponding TRP identification information / channel group identification and / or the indication content corresponding to the identification exist in the first command, the terminal device determines that the TRP identification information / channel group identification and the indication content corresponding to the identification exist in the first command, and determines that the TCI state of the TRP identification information / channel group exists in the first command; if the second indication information indicates that the corresponding TRP identification information / channel group identification and / or the indication content corresponding to the identification do not exist in the first command, the terminal device determines that the TRP identification information / channel group identification and the indication content corresponding to the identification do not exist in the first command, and determines that the TCI state of the TRP identification information / channel group does not exist in the first command.

[0125] For example, the second indication information corresponding to each TRP identification information / channel group can be 1 bit, which is 1 or 0, and is used to indicate whether the TRP identification information / channel group identification and the indication content corresponding to the identification exist in the first command.

[0126] If 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. If the second indication information A is 1, it indicates that the TCI state of TRP1 exists in the first command, otherwise, if the second indication information A is 0, it indicates that the TCI state of TRP1 does not exist in the first command. For the second indication information B, the same as the second indication information A, the second indication information B can also be 1 or 0 to indicate whether the TCI state of TRP2 exists in the first command. As can be seen from one or more embodiments described above, the technical scheme provided by the present application can provide a flexible and complete beam indication mode for a multi-TRP / multi-channel group scenario, so that the network device is more perfect in the beam indication mechanism of multiple channels and / or RS.

[0127] Figure 4 is a schematic block diagram of a network device according to an embodiment of the present application, as shown in Figure 4 The network device includes:

[0128] The first configuration module 410 is configured to configure a transmission configuration indication (TCI) state pool; the TCI state pool includes a plurality of TCI states.

[0129] The first sending module 420 is configured to send 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 reference signals (RSs); the at least one TCI state includes a shared TCI state and / or an independent TCI state.

[0130] In an embodiment, the first command includes downlink control information (DCI) signaling and / or a medium access control (MAC) control element (CE) command.

[0131] In an embodiment, the first configuration module 410 includes:

[0132] A first configuration unit is configured to configure the TCI state pool for a cell set; the cell set includes at least one cell.

[0133] In an embodiment, the first configuration module 410 further includes:

[0134] A second configuration unit is configured to configure at least one cell set in cell group configuration information before the configuration of the TCI state pool for the cell set.

[0135] The first configuration unit is further configured to configure the TCI state pool for the cell set in the cell group configuration information.

[0136] In an embodiment, the first configuration unit is further configured to:

[0137] configure one TCI state pool for each cell set respectively;

[0138] or,

[0139] configure the TCI state pool only for the cell set including a plurality of cells.

[0140] In an embodiment, the first configuration unit is further configured to:

[0141] configure the TCI state pool for at least one cell in the cell set;

[0142] or,

[0143] configure the TCI state pool for each cell in the cell set respectively.

[0144] In an embodiment, the first configuration unit is further configured to:

[0145] In the first designated information, the TCI state pool is configured for the cells in the cell set; the first designated information comprises at least one of the following: cell group configuration information, cell configuration information of the cell, bandwidth part (BWP) configuration information of the cell, physical downlink shared channel (PDSCH) configuration information of the cell, physical downlink control channel (PDCCH) configuration information of the cell.

[0146] In one embodiment, the first configuration module 410 further comprises:

[0147] A third configuration unit is configured to configure the TCI state pool for the cell not belonging to the cell set.

[0148] In one embodiment, the third configuration unit is further configured to:

[0149] In the second designated information, the TCI state pool is configured for the cell not belonging to the cell set; the second designated information comprises at least one of the following: cell configuration information of the cell, BWP configuration information of the cell, PDSCH configuration information of the cell, PDCCH configuration information of the cell.

[0150] In one embodiment, in the case that the TCI state comprises at least one of a QCL type A RS, a QCL type B RS and a QCL type C RS, the at least one of the QCL type A RS, the QCL type B RS and the QCL type C RS is only used for downlink (DL).

[0151] 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.

[0152] In one embodiment, the first command is used to indicate one shared TCI state for uplink (UL) and downlink (DL); or the first command is used to indicate respective corresponding independent TCI states for the UL and the DL respectively.

[0153] In one embodiment, the network device further comprises:

[0154] A second sending module is configured to send a second command to the terminal device before sending the first command to the terminal device; 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; the second command comprises DCI signaling and / or MAC CE command.

[0155] In an embodiment, the first command comprises at least one of:

[0156] a first signaling field of P first TCI states; the P is a positive integer;

[0157] a second signaling field of Q second TCI states; the Q is a positive integer;

[0158] first indication information for indicating whether the second signaling field exists.

[0159] In an embodiment, the network device further comprises:

[0160] a first agreement module, configured to agree with the terminal device on a preset position or number before the network device sends the first command to the terminal device; the preset position or number is used to locate the shared TCI state of the UL and the DL from a plurality of the TCI states, or to locate the independent TCI state corresponding to the UL and the DL respectively from a plurality of the TCI states.

[0161] In an embodiment, the network device further comprises:

[0162] a third sending module, configured to send a third command to the terminal device before the network device sends the first command to the terminal device; the third command comprises DCI signaling and / or MAC CE command;

[0163] wherein, in the case that the first signaling field and the second signaling field are included in the first command, and the P and the Q are both 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 indicate one of the second TCI states as the independent TCI state of the UL;

[0164] in the case that only the first signaling field is included in the first command, and the 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.

[0165] In an embodiment, in a multi-transmission-reception-point (TRP) / multi-channel group scenario, the first command is used to indicate the at least one TCI state corresponding to the TRP identification information / channel group; the channel group comprises a plurality of channels and / or RSs.

[0166] In an embodiment, for any TRP identification information / multi-channel group, the first command is used to indicate the shared TCI state of the UL and the DL of the TRP identification information / channel group; or the first command is used to indicate the independent TCI state corresponding to the UL and the DL of the TRP identification information / channel group respectively.

[0167] In an embodiment, the network device further comprises:

[0168] A fourth sending module is configured to send a fourth command to the terminal device before sending the first command to the terminal device; the fourth command is used to indicate whether the first command indicates the shared TCI state or the independent TCI state for the TRP identification information / channel group.

[0169] The fourth command comprises DCI signaling and / or MAC CE command.

[0170] In an embodiment, the first command comprises the identification of each TRP identification information / channel group and the indication content corresponding to each identification.

[0171] Alternatively,

[0172] The first command comprises the indication content corresponding to at least one TRP identification information / channel group and does not comprise the identification of the TRP identification information / channel group.

[0173] Alternatively,

[0174] The first command comprises a plurality of first commands, and each first command comprises the identification of one TRP identification information / channel group and the corresponding indication content.

[0175] Alternatively,

[0176] The first command comprises a plurality of first commands, and each first command comprises the indication content corresponding to one TRP identification information / channel group and does not comprise the identification of the TRP identification information / channel group.

[0177] The indication content comprises at least one of the first signaling field, the second signaling field, and the first indication information.

[0178] In an embodiment, the first command further comprises second indication information corresponding to the identification of the TRP identification information / channel group and / or the indication content.

[0179] The second indication information is used to indicate whether the identification of the TRP identification information / channel group and / or the indication content corresponding to each identification exists in the first command.

[0180] In one embodiment, the first command comprises the first indication information.

[0181] 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.

[0182] 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, and the second signaling field in the first command is used to indicate the independent TCI state corresponding to the UL.

[0183] The network device adopting one or more embodiments of the present application can configure a TCI state pool and send 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 multiple channels and / or reference signals (RSs), so that the terminal device can determine at least one TCI state corresponding to uplink (UL) and / or downlink (DL) according to the first command, thereby realizing unified beam indication mechanism of the network device for the multiple channels and / or RSs, reducing unnecessary signaling overhead, and making the beam indication mechanism more perfect.

[0184] The network device provided by the embodiment of the present application can realize the method embodiment Figures 1 to 3 implemented by the network device, and details are not repeated here to avoid repetition.

[0185] Figure 5 is a schematic block diagram of a terminal device according to an embodiment of the present application. As Figure 5 shown, the terminal device comprises:

[0186] The first receiving module 510 is configured to receive a first command sent 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 comprising 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 multiple channels and / or reference signals (RSs).

[0187] The first determining module 520 is configured to determine the at least one TCI state corresponding to uplink (UL) and / or downlink (DL) according to the first command.

[0188] In one embodiment, the first command comprises DCI signaling and / or a MAC CE command.

[0189] In one embodiment, the first determining module 520 comprises:

[0190] The first determining unit is configured to determine that at least one of the QCL Type A RS, the QCL Type B RS and the QCL Type C RS is only used for the DL in a case where the TCI state includes at least one of the QCL Type A RS, the QCL Type B RS and the QCL Type C RS.

[0191] In an embodiment, the first command is used to indicate one shared TCI state for the UL and the DL; or the first command is used to indicate respective independent TCI states corresponding to the UL and the DL respectively.

[0192] In an embodiment, the terminal device further includes:

[0193] The second receiving module is configured to receive a second command sent by the receiving network device before the first command sent by the network device; 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.

[0194] In an embodiment, the first command includes at least one of the following:

[0195] a first signaling field of P first TCI states; the P is a positive integer;

[0196] a second signaling field of Q second TCI states; the Q is a positive integer;

[0197] first indication information used to indicate whether the second signaling field exists.

[0198] In an embodiment, the terminal device further includes:

[0199] The second agreeing module is configured to agree with the network device on a preset position or number before the first command sent by the receiving network device; the preset position or number is used to locate the shared TCI state of the UL and the DL from a plurality of TCI states, or to locate the independent TCI state corresponding to the UL and the DL respectively from a plurality of TCI states.

[0200] In an embodiment, the first determining module 520 includes:

[0201] the second determining unit is configured to determine, in a case where the first signaling field and the second signaling field are included in the first command and the P and the Q are both greater than 1, that a first TCI state corresponding to the preset position or number in the first signaling field is the independent TCI state of the DL, and determine that a second TCI state corresponding to the preset position or number in the second signaling field is the independent TCI state of the UL;

[0202] the third determining unit is configured to determine, in a case where only the first signaling field is included in the first command and the P is greater than 1, that a 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.

[0203] In an embodiment, the terminal device further includes:

[0204] the third receiving module is configured to receive a third command sent by the receiving network device before the first command sent by the network device; the third command includes DCI signaling and / or a MAC CE command;

[0205] the second determining module is configured to determine, according to the third command, the independent TCI state or the shared TCI state of the UL and the DL;

[0206] In a case where the first signaling field and the second signaling field are included in the first command and the P and the Q are both 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 indicate one of the second TCI states as the independent TCI state of the UL; in a case where only the first signaling field is included in the first command and the 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.

[0207] In an embodiment, in a multi-transmission-reception-point (TRP) / multi-channel group scenario, the first command is used to indicate the at least one TCI state corresponding to each TRP identification information / channel group; the channel group includes multiple channels and / or RSs.

[0208] In an embodiment, for any TRP identification information / channel group, the first command is used to indicate the shared TCI state of the UL and the DL of the TRP identification information / channel group; or the first command is used to indicate the independent TCI state corresponding to the UL and the DL of the TRP identification information / channel group respectively.

[0209] In an embodiment, the terminal device further includes:

[0210] a fourth receiving module, configured to receive a fourth command sent by the network device before the first command sent by the network device; the fourth command is used to indicate that the first command indicates the shared TCI state or the independent TCI state for the TRP identification information / channel group; and the fourth command includes DCI signaling and / or a MAC CE command.

[0211] In an embodiment, the first determining module 520 includes:

[0212] a fourth determining unit, configured to determine the identification of each TRP identification information / channel group and / or corresponding indication content according to the first command; the indication content includes at least one of the first signaling field, the second signaling field, and the first indication information;

[0213] a fifth determining unit, configured to determine the at least one TCI state corresponding to each TRP identification information / channel group according to the identification of each TRP identification information / channel group and / or corresponding indication content.

[0214] In an embodiment, the fourth determining unit is further configured to:

[0215] if the first command includes the identification of each TRP identification information / channel group and the indication content corresponding to each identification, determine the identification of each TRP identification information / channel group and / or corresponding indication content according to the identification of each TRP identification information / channel group in the first command, respectively;

[0216] if the first command includes the indication content corresponding to at least one group of TRP identification information / channel groups and does not include the identification of the TRP identification information / channel group, determine the identification of each TRP identification information / channel group and / or corresponding indication content according to the arrangement order or position of each group of indication content in the first command;

[0217] if the first command includes multiple first commands, and each first command includes the identification of one TRP identification information / channel group and corresponding indication content, determine the identification of each TRP identification information / channel group and / or corresponding indication content according to the identification included in each first command, respectively;

[0218] If the first command includes multiple, each of the first command includes an indication content corresponding to the TRP identification information / channel group, and does not include the identification of the TRP identification information / channel group, the identification of each of the TRP identification information / channel group and / or the corresponding indication content is determined according to at least one of the time domain information, the frequency domain information, and the code domain information of each of the first command.

[0219] In an embodiment, the first command further includes second indication information corresponding to the identification of the TRP identification information / channel group and / or the indication content;

[0220] The fourth determination unit is further configured to:

[0221] If the second indication information indicates that the first command includes the identification of the corresponding TRP identification information / channel group and / or the indication content, it is determined that the first command includes the identification of the TRP identification information / channel group and / or the corresponding indication content;

[0222] If the second indication information indicates that the first command does not include the identification of the corresponding TRP identification information / channel group and / or the indication content, it is determined that the first command does not include the identification of the TRP identification information / channel group and / or the corresponding indication content.

[0223] In an embodiment, the first determination module includes:

[0224] The sixth determination unit is configured to, if the first indication information indicates that the second signaling field does not exist, determine that the first TCI state in the first signaling field is the shared TCI state of the UL and the DL;

[0225] The seventh determination unit is configured to, if the first indication information indicates that the second signaling field exists, 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.

[0226] As can be seen from the above embodiments, the network device configures a TCI state pool and sends a first command to the 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 multiple channels and / or reference signals RS, so that the terminal device can determine at least one TCI state corresponding to an uplink UL and / or a downlink DL according to the first command, thereby making the network device realize unified beam indication mechanism for multiple channels and / or RS, reducing unnecessary signaling overhead, and making the beam indication mechanism more perfect.

[0227] The terminal device provided by the embodiment of the present application can implement Figures 1 to 3 The various processes implemented by the terminal device in the method embodiment are not described again here to avoid repetition.

[0228] Please refer to Figure 6 , Figure 6 is a structural diagram of a network device to which the embodiment of the present application is applied, and can implement the details of the beam indication method performed by the network device in the above embodiment and achieve the same effect. As shown in Figure 6 , the network device 600 includes a processor 601, a transceiver 602, a memory 603, a user interface 604, and a bus interface, wherein:

[0229] In the embodiment of the present application, the network device 600 further includes a computer program stored on the memory 603 and executable on the processor 601, and the computer program implements the following steps when executed by the processor 601:

[0230] configuring a transmission configuration indication (TCI) state pool; the TCI state pool includes a plurality of TCI states;

[0231] sending a first command to the 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); the at least one TCI state includes a shared TCI state and / or an independent TCI state.

[0232] In the Figure 6 , the bus architecture can include any number of interconnected buses and bridges, which are variously linked by the circuitry of the processor 601 representing one or more processors and the memory 603 representing the memory. The bus architecture can also link various other circuitry such as peripheral devices, voltage stabilizers, and power management circuitry, which are well known in the art, and therefore, are not further described herein. The bus interface provides an interface. The transceiver 602 can be a plurality of elements, i.e., including a transmitter and a receiver, which provide units for communicating with various other devices on a transmission medium. The user interface 604 can also be an interface capable of connecting the required devices externally and internally, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc., for different user devices.

[0233] The processor 601 is responsible for managing the bus architecture and general processing, and the memory 603 can store data used by the processor 601 when performing operations.

[0234] Optionally, the first command includes downlink control information (DCI) signaling and / or a medium access control (MAC) control element (CE) command.

[0235] Optionally, the computer program, when executed by the processor 601, can further implement the following steps:

[0236] configuring the TCI state pool for a cell set; the cell set comprises at least one cell.

[0237] Optionally, the computer program, when executed by the processor 601, can further implement the following steps:

[0238] Before the configuring the TCI state pool for the cell set, configuring at least one cell set in cell group configuration information;

[0239] configuring the TCI state pool for the cell set in the cell group configuration information.

[0240] Optionally, the computer program, when executed by the processor 601, can further implement the following steps:

[0241] configuring one TCI state pool for each cell set respectively;

[0242] or,

[0243] configuring the TCI state pool only for the cell set comprising multiple cells.

[0244] Optionally, the computer program, when executed by the processor 601, can further implement the following steps:

[0245] configuring the TCI state pool for at least one cell in the cell set;

[0246] or,

[0247] configuring the TCI state pool for each cell in the cell set respectively.

[0248] Optionally, the computer program, when executed by the processor 601, can further implement the following steps:

[0249] configuring the TCI state pool for the cell in the cell set in the first specified information; the first specified information comprises at least one of the following: cell group configuration information, cell configuration information of the cell, bandwidth part (BWP) configuration information of the cell, physical downlink shared channel (PDSCH) configuration information of the cell, physical downlink control channel (PDCCH) configuration information of the cell.

[0250] Optionally, the computer program, when executed by the processor 601, can further implement the following steps:

[0251] configuring the TCI state pool for the cell not belonging to the cell set.

[0252] Optionally, the computer program is further capable of implementing the following steps when executed by the processor 601:

[0253] In the second specified information, the TCI state pool is configured for the cells not belonging to the cell set; the second specified information comprises at least one of the following: cell configuration information of the cell, BWP configuration information of the cell, PDSCH configuration information of the cell, and PDCCH configuration information of the cell.

[0254] Optionally, in the case that the TCI state comprises at least one of QCL Type A RS, QCL Type B RS and QCL Type C RS, the at least one of QCL Type A RS, QCL Type B RS and QCL Type C RS is only used for downlink DL.

[0255] 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 to which the cell corresponding to the TCI state pool belongs.

[0256] Optionally, the first command is used to indicate one shared TCI state for uplink UL and downlink DL; or the first command is used to indicate respective independent TCI states corresponding to the UL and the DL respectively.

[0257] Optionally, the computer program is further capable of implementing the following steps when executed by the processor 601:

[0258] sending a second command to the terminal device; 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 comprises DCI signaling and / or MAC CE command.

[0259] Optionally, the first command comprises at least one of the following:

[0260] a first signaling field of P first TCI states; the P is a positive integer;

[0261] a second signaling field of Q second TCI states; the Q is a positive integer;

[0262] first indication information used to indicate whether the second signaling field exists.

[0263] Optionally, the computer program is further capable of implementing the following steps when executed by the processor 601:

[0264] Before sending the first command to the terminal device, a preset position or number is agreed with the terminal device; the preset position or number is used to locate the shared TCI state of the UL and the DL from the plurality of TCI states, or to locate the independent TCI state corresponding to the UL and the DL respectively from the plurality of TCI states.

[0265] Optionally, the computer program is further capable of implementing the following steps when executed by the processor 601:

[0266] Before sending the first command to the terminal device, a third command is sent to the terminal device; the third command includes DCI signaling and / or MAC CE command

[0267] When the first signaling field and the second signaling field are included in the first command, and the P and the Q are both 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 indicate one of the second TCI states as the independent TCI state of the UL.

[0268] When only the first signaling field is included in the first command, and the 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.

[0269] Optionally, in a multi-transmission and reception point (TRP) / multi-channel group scenario, the first command is used to indicate the at least one TCI state corresponding to each TRP identification information / channel group; the channel group includes a plurality of channels and / or RSs.

[0270] Optionally, for any TRP identification information / multi-channel group, the first command is used to indicate the shared TCI state of the UL and the DL of the TRP identification information / channel group; or the first command is used to indicate the independent TCI state corresponding to the UL and the DL of the TRP identification information / channel group.

[0271] Optionally, the computer program is further capable of implementing the following steps when executed by the processor 601:

[0272] Before sending the first command to the terminal device, a fourth command is sent to the terminal device; the fourth command is used to indicate whether the first command indicates the shared TCI state or the independent TCI state for the TRP identification information / channel group;

[0273] The fourth command includes DCI signaling and / or MAC CE command.

[0274] Optionally, the first command comprises an identity of each of the TRP identity information / channel group and corresponding indication content of each identity.

[0275] Alternatively,

[0276] The first command comprises the indication content corresponding to at least one of the TRP identity information / channel group, and does not comprise the identity of the TRP identity information / channel group.

[0277] Alternatively,

[0278] The first command comprises a plurality of first commands, each of which comprises the identity of one of the TRP identity information / channel group and corresponding indication content.

[0279] Alternatively,

[0280] The first command comprises a plurality of first commands, each of which comprises the indication content corresponding to one of the TRP identity information / channel group, and does not comprise the identity of the TRP identity information / channel group.

[0281] The indication content comprises at least one of the first signaling field, the second signaling field, and the first indication information.

[0282] Optionally, the first command further comprises second indication information corresponding to the identity of the TRP identity information / channel group and / or the indication content.

[0283] The second indication information is used to indicate whether the identity of the TRP identity information / channel group and / or the indication content exists in the first command.

[0284] Optionally, the first command comprises the first indication information.

[0285] 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.

[0286] 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, and the second signaling field in the first command is used to indicate the independent TCI state corresponding to the UL.

[0287] In the embodiments of the present application, the network device configures a TCI state pool and sends a first command to the 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 multiple channels and / or reference signals (RSs), so that the terminal device can determine at least one TCI state corresponding to uplink (UL) and / or downlink (DL) according to the first command, thereby realizing unified beam indication mechanism of the network device for the multiple channels and / or RSs, reducing unnecessary signaling overhead, and making the beam indication mechanism more perfect.

[0288] Figure 7 is a block diagram of the terminal device according to another embodiment of the present application. Figure 7 The terminal device 700 shown includes at least one processor 701, a memory 702, at least one network interface 704, and a user interface 703. The various components in the terminal device 700 are coupled together by a bus system 705. It can be understood that the bus system 705 is used to realize the connection communication between these components. In addition to including a data bus, the bus system 705 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity in the description, all the buses are marked as the bus system 705 in the Figure 7

[0289] The user interface 703 can include a display, a keyboard, or a pointing device (for example, a mouse, a trackball, a touchpad, or a touch screen, etc.).

[0290] ​It is to be appreciated that the memory 702 in embodiments of the application can be volatile, nonvolatile, or a combination of volatile and non-volatile memory. In one embodiment, the non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically EPROM (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which acts as external cache. By way of example and not limitation, many forms of RAM are suitable, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous dynamic RAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and direct Rambus RAM (DRRAM). The memory 702 of the system and method described herein are intended to include, without being limited to, these and any other suitable types of memory.

[0291] In some embodiments, the memory 702 stores data, elements, or modules, or a subset thereof, or their extensions, including an operating system 7021 and applications 7022.

[0292] The operating system 7021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The applications 7022 include various application programs, such as a media player, a browser, and the like, for implementing various application services. The programs implementing the methods of embodiments of the application can be included in the applications 7022.

[0293] In embodiments of the application, the terminal device 700 further includes a computer program stored on the memory 709 and executable on the processor 710, which, when executed by the processor 701, implements the following steps:

[0294] receive a first command sent 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 reference signals (RSs);

[0295] According to the first command, the at least one TCI state corresponding to uplink (UL) and / or downlink (DL) is determined.

[0296] The method disclosed in the embodiments of the present application can be applied to the processor 701 or implemented by the processor 701. The processor 701 can be an integrated circuit chip having a signal processing capability. In the implementation process, the steps of the above method can be completed by the integrated logic circuits or the software form instructions in the processor 701. The processor 701 described above can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as a hardware code processor for execution, or a combination of hardware and software modules in the code processor for execution. The software module can be located in a random access memory, a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register or other computer readable storage medium in the art. The computer readable storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702, and combines the hardware to complete the steps of the above method. Specifically, the computer readable storage medium has a computer program stored thereon, and the computer program is executed by the processor 701 to implement the steps of the above resource multiplexing method embodiments.

[0297] It can be understood that the embodiments described in the embodiments of the present application can be implemented by hardware, software, firmware, middleware, microcode or a combination thereof. For hardware implementation, the processing unit can 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, micro-controllers, microprocessors, other electronic units for performing the functions described in the present application, or a combination thereof.

[0298] For software implementation, the technologies described in the embodiments of the present application can be implemented by modules (for example, processes, functions, etc.) for performing the functions described in the embodiments of the present application. The software code can be stored in a memory and executed by a processor. The memory can be implemented in the processor or outside the processor.

[0299] Optionally, the first command comprises DCI signaling and / or a MAC CE command.

[0300] Optionally, the TCI state comprises at least one of the following: a quasi co-location (QCL) type A RS, a QCL type B RS, a QCL type C RS, and a QCL type D RS.

[0301] Optionally, the computer program, when executed by the processor 701, can further implement the following steps:

[0302] In a case where the TCI state comprises at least one of a QCL type A RS, a QCL type B RS, and a QCL type C RS, it is determined that the at least one of the QCL type A RS, the QCL type B RS, and the QCL type C RS is only for the DL.

[0303] Optionally, the first command is used to indicate one shared TCI state for the UL and the DL; or the first command is used to indicate a respective corresponding independent TCI state for the UL and the DL, respectively.

[0304] Optionally, the computer program, when executed by the processor 701, can further implement the following steps:

[0305] The second command is received before the first command is received, 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.

[0306] Optionally, the first command includes at least one of the following:

[0307] a first signaling field of P first TCI states; the P is a positive integer;

[0308] a second signaling field of Q second TCI states; the Q is a positive integer;

[0309] first indication information used to indicate whether the second signaling field exists.

[0310] Optionally, the computer program, when executed by the processor 701, can further implement the following steps:

[0311] The first command is received before the first command is received, 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.

[0312] Optionally, the computer program, when executed by the processor 701, can further implement the following steps:

[0313] In the case that the first signaling field and the second signaling field are included in the first command, and the P and the Q are both greater than 1, it is determined that a first TCI state corresponding to the preset position or number in the first signaling field is the independent TCI state of the DL, and it is determined that a second TCI state corresponding to the preset position or number in the second signaling field is the independent TCI state of the UL;

[0314] In the case that only the first signaling field is included in the first command, and the P is greater than 1, it is determined that a 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.

[0315] Optionally, the computer program, when executed by the processor 701, can further implement the following steps:

[0316] The third command is received before the first command is received, and the third command includes DCI signaling and / or a MAC CE command;

[0317] determining the independent TCI state or the shared TCI state of the UL and the DL according to the third command;

[0318] In a case that the first signaling field and the second signaling field are included in the first command, and the P and the Q are both 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 indicate one of the second TCI states as the independent TCI state of the UL; in a case that only the first signaling field is included in the first command, and the 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.

[0319] Optionally, in a multi-transmission reception point (TRP) / multi-channel group scenario, the first command is used to indicate the at least one TCI state corresponding to each TRP identification information / channel group; the channel group includes multiple channels and / or RSs.

[0320] Optionally, for any TRP identification information / channel group, the first command is used to indicate the shared TCI state of the UL and the DL of the TRP identification information / channel group; or the first command is used to indicate the independent TCI state corresponding to the UL and the DL of the TRP identification information / channel group respectively.

[0321] Optionally, the computer program is further capable of implementing the following steps when executed by the processor 701:

[0322] Before receiving the first command sent by the network device, the fourth command sent by the network device is received; the fourth command is used to indicate whether the first command indicates the shared TCI state or the independent TCI state for the TRP identification information / channel group; the fourth command includes DCI signaling and / or MAC CE command.

[0323] Optionally, the computer program is further capable of implementing the following steps when executed by the processor 701:

[0324] According to the first command, the identification and / or corresponding indication content of each TRP identification information / channel group are determined; the indication content includes at least one of the first signaling field, the second signaling field, and the first indication information;

[0325] According to the identification and / or corresponding indication content of each TRP identification information / channel group, the identification and / or corresponding at least one TCI state of each TRP identification information / channel group are determined.

[0326] Optionally, the computer program is further capable of implementing the following steps when executed by the processor 701:

[0327] If the first command includes the identification of each TRP identification information / channel group and the corresponding indication content, the identification of each TRP identification information / channel group and / or the corresponding indication content is determined according to the identification of each TRP identification information / channel group in the first command.

[0328] If the first command includes the indication content corresponding to at least one TRP identification information / channel group and does not include the identification of the TRP identification information / channel group, the identification of each TRP identification information / channel group and / or the corresponding indication content is determined according to the arrangement order or position of each group of indication content in the first command.

[0329] If the first command includes multiple first commands, and each first command includes the identification of one TRP identification information / channel group and the corresponding indication content, the identification of each TRP identification information / channel group and / or the corresponding indication content is determined according to the identification included in each first command.

[0330] If the first command includes multiple first commands, and each first command includes the indication content corresponding to one TRP identification information / channel group and does not include the identification of the TRP identification information / channel group, the identification of each TRP identification information / channel group and / or the corresponding indication content is determined according to at least one of the time domain information, frequency domain information, and code domain information of each first command.

[0331] Optionally, the first command further includes second indication information corresponding to the identification of the TRP identification information / channel group and / or the indication content.

[0332] The determination of the indication content corresponding to each TRP identification information / channel group according to the first command further includes:

[0333] If the second indication information indicates that the first command includes the identification of the corresponding TRP identification information / channel group and / or the corresponding indication content, it is determined that the first command includes the identification of the TRP identification information / channel group and / or the corresponding indication content.

[0334] If the second indication information indicates that the first command does not include the identification of the corresponding TRP identification information / channel group and / or the corresponding indication content, it is determined that the first command does not include the identification of the TRP identification information / channel group and / or the corresponding indication content.

[0335] Optionally, the computer program is further capable of implementing the following steps when executed by the processor 701:

[0336] If the first indication information indicates that the second signaling field does not exist, the first TCI state in the first signaling field is determined as the shared TCI state corresponding to the UL and the DL.

[0337] If the first indication information indicates that the second signaling field exists, the first TCI state in the first signaling field is determined as the independent TCI state corresponding to the DL, and the second TCI state in the second signaling field is determined as the independent TCI state corresponding to the UL.

[0338] The terminal device 700 can implement various processes implemented by the terminal device in the foregoing embodiments, and thus details are not repeated here.

[0339] In the embodiments of the present application, the network device configures a TCI state pool and sends a first command to the 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 multiple channels and / or reference signals (RSs). Thus, the terminal device can determine at least one TCI state corresponding to the UL and / or the DL according to the first command, so that the network device can implement unified beam indication mechanism for multiple channels and / or RSs, reduce unnecessary signaling overhead, and make the beam indication mechanism more perfect.

[0340] The embodiments of the present application also provide a readable storage medium, where the readable storage medium stores a program or instructions, and the program or instructions are executed by a processor to implement various processes of the beam indication method embodiments executed by the network device and achieve the same technical effects. Details are not repeated here to avoid repetition.

[0341] The processor is the processor in the network device in the foregoing embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like.

[0342] The embodiments of the present application also provide a readable storage medium, where the readable storage medium stores a program or instructions, and the program or instructions are executed by a processor to implement various processes of the beam indication method embodiments executed by the terminal device and achieve the same technical effects. Details are not repeated here to avoid repetition.

[0343] The processor is the processor in the terminal device 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.

[0344] It should be noted that, in this document, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise a list of elements do not include only those elements recited, but can also include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses. Without more limitations, an element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted, or combined. In addition, features described with reference to certain examples can be combined in other examples.

[0345] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of software and the necessary general hardware platform, of course, it can also be realized by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for making a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in various embodiments of the present application.

[0346] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative, not limiting, and those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims.

Claims

1. A beam pointing method, characterized in that, The method is performed by a network device, and the method comprises: configuring a transmission configuration indication (TCI) state pool; the TCI state pool comprises a plurality of TCI states; 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 (RSs); the at least one TCI state comprising a shared TCI state and / or an independent TCI state; wherein the configuring of the TCI state pool comprises configuring the TCI state pool for a cell set; the cell set comprises at least one cell; wherein the configuring of the TCI state pool for the cell set comprises configuring the TCI state pool for at least one cell in the cell set; wherein other cells in the cell set except the at least one cell use the TCI state pool of the at least one cell.

2. The method of claim 1, wherein, The first command comprises downlink control information (DCI) signaling and / or a medium access control (MAC) control element (CE) command.

3. The method of claim 1, wherein, Before the configuring of the TCI state pool for the cell set, the method further comprises: configuring at least one cell set in cell group configuration information; the configuring of the TCI state pool for the cell set comprises: configuring the TCI state pool for the cell set in the cell group configuration information.

4. The method according to claim 1 or 3, characterized in that, The configuring of the TCI state pool for the cell set comprises: configuring one TCI state pool for each cell set respectively; or, only configuring the TCI state pool for the cell set comprising a plurality of cells.

5. The method according to claim 1 or 3, characterized in that, The configuring of the TCI state pool for the cell set further comprises: configuring the TCI state pool for the cells in the cell set in first specified information; the first specified information comprises at least one of the following: cell group configuration information, cell configuration information of the cells, bandwidth part (BWP) configuration information of the cells, physical downlink shared channel (PDSCH) configuration information of the cells, physical downlink control channel (PDCCH) configuration information of the cells.

6. The method of claim 1, wherein, The configuring of the TCI state pool further comprises: configuring the TCI state pool for the cells not belonging to the cell set.

7. The method of claim 6, wherein, The configuring of the TCI state pool for the cells not belonging to the cell set comprises: configuring the TCI state pool for the cells not belonging to the cell set in second specified information; the second specified information comprises at least one of the following: cell configuration information of the cells, BWP configuration information of the cells, PDSCH configuration information of the cells, PDCCH configuration information of the cells.

8. The method according to any one of claims 1 to 7, characterized in that, In a case where the TCI state comprises at least one of a QCL type A RS, a QCL type B RS and a QCL type C RS, at least one of the QCL type A RS, the QCL type B RS and the QCL type C RS is used only for downlink (DL).

9. The method according to any one of claims 1 to 8, characterized in that, The first command is used for indicating one shared TCI state for uplink (UL) and downlink (DL); or, the first command is used for indicating respective corresponding independent TCI states for the UL and the DL respectively.

10. The method of claim 9, wherein, Before the first command is sent to the terminal device, the method further comprises: sending a second command to the terminal device; the second command is used for indicating whether the first command indicates the shared TCI state or the independent TCI state for the UL and the DL; and the second command comprises DCI signaling and / or MAC CE command.

11. The method of claim 9, wherein, The first command comprises at least one of the following: a first signaling field of P first TCI states; P is a positive integer; a second signaling field of Q second TCI states; Q is a positive integer; first indication information used for indicating whether the second signaling field exists.

12. The method of claim 11, wherein, Before the first command is sent to the terminal device, the method further comprises: agreeing with the terminal device on a preset position or number; the preset position or number is used for locating the shared TCI state of the UL and the DL from a plurality of TCI states, or locating the independent TCI state of the UL and the DL from a plurality of TCI states.

13. The method of claim 11, wherein, Before the first command is sent to the terminal device, the method further comprises: sending a third command to the terminal device; the third command comprises DCI signaling and / or MAC CE command In the case that the first signaling field and the second signaling field are included in the first command, and P and Q are both greater than 1, the third command is used for indicating one of the first TCI states as the independent TCI state of the DL, and indicating one of the second TCI states as the independent TCI state of the UL; In the case that only the first signaling field is included in the first command, and P is greater than 1, the third command is used for indicating one of the first TCI states as the shared TCI state of the UL and the DL.

14. The method according to any one of claims 11-13, characterized in that, In a multi-transmission-reception point (TRP) / multi-channel group scenario, the first command is used for indicating the at least one TCI state corresponding to each TRP identification information / channel group; the channel group comprises a plurality of channels and / or RSs.

15. The method of claim 14, wherein, For any TRP identification information / multi-channel group, the first command is used for indicating the shared TCI state of the UL and the DL of the TRP identification information / channel group; or, the first command is used for indicating the independent TCI state of the UL and the DL of the TRP identification information / channel group.

16. The method of claim 15, wherein, Before the first command is sent to the terminal device, the method further comprises: sending a fourth command to the terminal device; the fourth command is used for indicating whether the first command indicates the shared TCI state or the independent TCI state for the TRP identification information / channel group; The fourth command comprises DCI signaling and / or MAC CE command.

17. The method according to any one of claims 14-16, characterized by, The first command comprises the identification of each TRP identification information / channel group, and the indication content corresponding to each identification; or, The first command includes the indication content corresponding to at least one TRP identification information / channel group, and does not include the identification of the TRP identification information / channel group. Or, The first command includes a plurality of first commands, each of which includes the identification of one TRP identification information / channel group and the corresponding indication content. Or, The first command includes a plurality of first commands, each of which includes the indication content corresponding to one TRP identification information / channel group, and does not include the identification of the TRP identification information / channel group. The indication content includes at least one of the first signaling field, the second signaling field, and the first indication information.

18. The method of claim 17, wherein, The first command further includes second indication information corresponding to the identification of the TRP identification information / channel group and / or the indication content. The second indication information is used to indicate whether the identification of the TRP identification information / channel group and / or the indication content exists in the first command.

19. The method according to any one of claims 11-18, characterized in that, 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. 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, and the second signaling field in the first command is used to indicate the independent TCI state corresponding to the UL. 20.A method for indicating a beam, the method comprising: The method is performed by a terminal device, and the method comprises: receiving a first command sent 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; the at least one TCI state being used to indicate common beam information of a plurality of channels and / or reference signals (RSs); determining the at least one TCI state corresponding to uplink (UL) and / or downlink (DL) according to the first command; The TCI state pool is configured by the network device for a cell set, and the cell set includes at least one cell. The TCI state pool is configured by the network device for at least one cell in the cell set; and other cells in the cell set, except the at least one cell, use the TCI state pool of the at least one cell.

21. The method of claim 20, wherein, The first command includes DCI signaling and / or a MAC CE command.

22. The method of claim 20 or 21, wherein, The determination of the at least one TCI state corresponding to UL and / or DL according to the first command comprises: In the case where the TCI state includes at least one of a QCL type A RS, a QCL type B RS, and a QCL type C RS, it is determined that the at least one of the QCL type A RS, the QCL type B RS, and the QCL type C RS is only used for the DL.

23. The method of any one of claims 20-22, wherein, The first command is used to indicate one shared TCI state for the UL and the DL; or the first command is used to indicate respective corresponding independent TCI states for the UL and the DL respectively.

24. The method of claim 22, wherein, Before receiving the first command sent by the network device, the method further comprises: receiving a second command sent by the network device; 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 comprises DCI signaling and / or MAC CE command.

25. The method of claim 22 or 24, wherein, The first command comprises at least one of the following: a first signaling field of P first TCI states; the P is a positive integer; a second signaling field of Q second TCI states; the Q is a positive integer; first indication information used to indicate whether the second signaling field exists.

26. The method of claim 25, wherein, Before receiving the first command sent by the network device, the method further comprises: agreeing with the network device on a preset position or number; the preset position or number is used to locate the shared TCI state of the UL and the DL from a plurality of TCI states, or to locate the independent TCI state of the UL and the DL from a plurality of TCI states.

27. The method of claim 26, wherein, The determining of the at least one TCI state corresponding to the uplink (UL) and / or the downlink (DL) according to the first command comprises: in the case that the first signaling field and the second signaling field are included in the first command and the P and the Q are both greater than 1, determining a first TCI state corresponding to the preset position or number in the first signaling field as the independent TCI state of the DL, and determining a second TCI state corresponding to the preset position or number in the second signaling field as the independent TCI state of the UL; in the case that only the first signaling field is included in the first command and the P is greater than 1, determining a first TCI state corresponding to the preset position or number in the first signaling field as the shared TCI state of the UL and the DL.

28. The method of claim 27, wherein, Before receiving the first command sent by the network device, the method further comprises: receiving a third command sent by the network device; the third command comprises DCI signaling and / or MAC CE command; determining the independent TCI state or the shared TCI state of the UL and the DL according to the third command; in the case that the first signaling field and the second signaling field are included in the first command and the P and the Q are both 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 indicate one of the second TCI states as the independent TCI state of the UL; in the case that only the first signaling field is included in the first command and the 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.

29. The method of any one of claims 25-28, wherein, In a multi-transmission reception point (TRP) / multi-channel group scenario, the first command is used to indicate the at least one TCI state corresponding to each TRP identifier information / channel group; and the channel group includes multiple channels and / or RSs.

30. The method of claim 29, wherein, For any TRP identifier information / channel group, 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 state corresponding to the UL and the DL of the TRP identifier information / channel group respectively.

31. The method of claim 30, wherein, Before receiving the first command sent by the network device, the method further includes: receiving a fourth command sent by the network device; 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; and the fourth command includes DCI signaling and / or MAC CE command.

32. The method of claim 30 or 31, wherein, The determining of the at least one TCI state corresponding to the UL and / or the DL according to the first command includes: determining the identifier of each TRP identifier information / channel group and / or the corresponding indication content according to the first command; the indication content includes at least one of the first signaling field, the second signaling field, and the first indication information; determining the at least one TCI state corresponding to each TRP identifier information / channel group respectively according to the identifier of each TRP identifier information / channel group and / or the corresponding indication content.

33. The method of claim 32, wherein, The determining of the identifier of each TRP identifier information / channel group and / or the corresponding indication content according to the first command includes: if the first command includes the identifier of each TRP identifier information / channel group and the indication content corresponding to each identifier, then the identifier of each TRP identifier information / channel group and / or the corresponding indication content are determined respectively according to the identifier of each TRP identifier information / channel group in the first command; if the first command includes the indication content corresponding to at least one group of TRP identifier information / channel groups and does not include the identifier of the TRP identifier information / channel group, then the identifier of each TRP identifier information / channel group and / or the corresponding indication content are determined according to the arrangement order or position of each group of indication content in the first command; if the first command includes multiple first commands and each first command includes the identifier of one TRP identifier information / channel group and the corresponding indication content, then the identifier of each TRP identifier information / channel group and / or the corresponding indication content are determined respectively according to the identifier included in each first command; if the first command includes multiple first commands and each first command includes the indication content corresponding to one TRP identifier information / channel group and does not include the identifier of the TRP identifier information / channel group, then the identifier of each TRP identifier information / channel group and / or the corresponding indication content are determined according to at least one of the time domain information, the frequency domain information, and the code domain information of each first command.

34. The method of claim 33, wherein, The first command further comprises second indication information corresponding to the identification of the TRP identification information / channel group and / or the indication content; The determining of the indication content corresponding to each TRP identification information / channel group according to the first command further comprises: If the second indication information indicates that the identification of the corresponding TRP identification information / channel group and / or the corresponding indication content exists in the first command, it is determined that the identification of the TRP identification information / channel group and / or the corresponding indication content exists in the first command; If the second indication information indicates that the identification of the corresponding TRP identification information / channel group and / or the corresponding indication content does not exist in the first command, it is determined that the identification of the TRP identification information / channel group and / or the corresponding indication content does not exist in the first command.

35. The method of any one of claims 25-34, wherein, The determining of the at least one TCI state corresponding to the uplink (UL) and / or the downlink (DL) according to the first command comprises: If the first indication information indicates that the second signaling field does not exist, it is determined that the first TCI state in the first signaling field is the shared TCI state of the UL and the DL; If the first indication information indicates that the second signaling field exists, it is determined that the first TCI state in the first signaling field is the independent TCI state corresponding to the DL, and it is determined that the second TCI state in the second signaling field is the independent TCI state corresponding to the UL.

36. A network device, comprising: Comprise: A first configuration module is configured to configure a transmission configuration indication (TCI) state pool; The TCI state pool comprises a plurality of TCI states; A first sending module is configured to send a first command to a terminal device, wherein 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 reference signals (RSs); the at least one TCI state comprises a shared TCI state and / or an independent TCI state; The first configuration module is configured to configure the TCI state pool for a cell set; the cell set comprises at least one cell; The configuration of the TCI state pool for the cell set comprises: configuring the TCI state pool for at least one cell in the cell set; and other cells in the cell set except the at least one cell use the TCI state pool of the at least one cell.

37. A terminal device, comprising: Comprise: A first receiving module is configured to receive a first command sent by a network device, wherein the first command is used to indicate at least one TCI state in a TCI state pool, and the at least one TCI state comprises a shared TCI state and / or an independent TCI state; the TCI state pool is pre-configured 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 signals (RSs); A first determining module is configured to determine the at least one TCI state corresponding to an uplink (UL) and / or a downlink (DL) according to the first command. The TCI state pool is configured by a network device for a cell set, and the cell set includes at least one cell. The TCI state pool is configured by a network device for at least one cell in the cell set; and other cells in the cell set, except the at least one cell, use the TCI state pool of the at least one cell.

38. A network device, comprising: The processor, the memory, and a program or instructions stored in the memory and executable on the processor are included, and the program or instructions are executed by the processor to implement the steps of the beam indication method according to any one of claims 1-19.

39. A readable storage medium characterized by, A program or instructions are stored in the readable storage medium, and the program or instructions are executed by the processor to implement the steps of the beam indication method according to any one of claims 1-19.

40. A terminal device, comprising: The processor, the memory, and a program or instructions stored in the memory and executable on the processor are included, and the program or instructions are executed by the processor to implement the steps of the beam indication method according to any one of claims 20-35.

41. A readable storage medium characterized by, A program or instructions are stored in the readable storage medium, and the program or instructions are executed by the processor to implement the steps of the beam indication method according to any one of claims 20-35.

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