Beam indication method and apparatus

Abstract

The embodiment of the application discloses a beam indication method and device, which can include: a terminal receiving first signaling, the first signaling being used for indicating a TCI state, the TCI state being used for indicating a common beam of at least two channels or reference signals; and sending feedback information of the first signaling, wherein the feedback information of the first signaling includes one of the following: feedback information of a first target channel, a second target channel, and a target reference signal.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a beam pointing method and device, which may include a terminal, network-side equipment, beam pointing device, etc. Background Technology

[0002] Network-side equipment can perform beamforming on downlink and uplink channels or reference signals to establish beam links between network-side equipment and terminals, enabling the transmission of channels or reference signals. However, the beamforming mechanisms for various channels and reference signals differ in related technologies, which can result in significant signaling overhead. Summary of the Invention

[0003] This application provides a beam pointing method and device that can solve the problem of high signaling overhead in beam pointing.

[0004] In a first aspect, a beam indication method is provided, the method comprising: a terminal receiving a first signaling, the first signaling being used to indicate a TCI state, the TCI state being used to indicate a common beam of at least two channels or reference signals; and transmitting feedback information of the first signaling, wherein the feedback information of the first signaling includes one of the following: feedback information of a first target channel, a second target channel, and a target reference signal.

[0005] Secondly, a beam indication method is provided, the method comprising: a network-side device sending a first signaling, the first signaling being used to indicate a TCI state, the TCI state being used to indicate a common beam of at least two channels or reference signals; and receiving feedback information of the first signaling, wherein the feedback information of the first signaling includes one of the following: feedback information of a first target channel, a second target channel, and a target reference signal.

[0006] Thirdly, a beam indication device is provided, comprising: a receiving module for receiving a first signaling, the first signaling being used to indicate a TCI state, the TCI state being used to indicate a common beam of at least two channels or reference signals; and a transmitting module for transmitting feedback information of the first signaling, wherein the feedback information of the first signaling includes one of the following: feedback information of a first target channel, a second target channel, and a target reference signal.

[0007] Fourthly, a beam indication device is provided, comprising: a transmitting module for transmitting a first signaling, the first signaling being used to indicate a TCI state, the TCI state being used to indicate a common beam of at least two channels or reference signals; and a receiving module for receiving feedback information of the first signaling, wherein the feedback information of the first signaling includes one of the following: feedback information of a first target channel, a second target channel, or a target reference signal.

[0008] Fifthly, a terminal is provided, the terminal including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, the program or instructions implementing the method as described in the first aspect when executed by the processor.

[0009] In a sixth aspect, a network-side device is provided, the network-side device including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the method as described in the second aspect.

[0010] In a seventh aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the method as described in the first aspect, or implement the method as described in the second aspect.

[0011] Eighthly, a computer program product is provided, the computer program product including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein when the program or instructions are executed by the processor, they implement the method as described in the first aspect, or implement the method as described in the second aspect.

[0012] In a ninth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0013] In this embodiment, the network-side device can indicate the common beam of at least two channels or reference signals through the first signaling. Compared with indicating the beams of the at least two channels or reference signals separately, this can save signaling overhead. In addition, in this embodiment, the feedback information of the first target channel, the second target channel, or the target reference signal can be used as the feedback information of the first signaling. The network-side device can promptly know whether the terminal side has successfully received the first signaling, which facilitates the subsequent transmission of the channel or reference signal through the aforementioned common beam and improves communication efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a wireless communication system according to an embodiment of this application;

[0015] Figure 2 This is a schematic flowchart of a beam pointing method according to an embodiment of this application;

[0016] Figure 3 This is a schematic flowchart of a beam pointing method according to an embodiment of this application;

[0017] Figure 4 This is a schematic diagram of the beam pointing device according to an embodiment of this application;

[0018] Figure 5 This is a schematic diagram of the beam pointing device according to an embodiment of this application;

[0019] Figure 6 This is a schematic diagram of the structure of a communication device according to an embodiment of this application;

[0020] Figure 7 This is a schematic diagram of the terminal structure according to an embodiment of this application;

[0021] Figure 8 This is a schematic diagram of the structure of a network-side device according to an embodiment of this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0023] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0024] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used in the systems and radio technologies mentioned above, as well as in other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and NR terminology is used in most of the following description. These technologies can also be applied to applications beyond NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0025] Figure 1This diagram illustrates a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as a terminal device or user equipment (UE). The terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), etc. Wearable devices include wristbands, headphones, glasses, etc. It should be noted that this application does not limit the specific type of terminal 11. Network-side device 12 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), next-generation node B (gNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0026] As mentioned earlier, the beam indication mechanisms for various channels and reference signals differ in related technologies, which requires significant signaling overhead. For high-frequency communication systems, the communication link between network-side equipment and terminals can typically use a single-beam approach, meaning the beam directions of control channels, data channels, and reference signals are essentially the same, eliminating the need for separate beam indication for each channel and reference signal. Therefore, this application embodiment reduces the signaling overhead of beam indication by indicating a common beam shared by at least two channels or reference signals.

[0027] In addition, this application provides various methods for indicating the common beam, as well as a feedback mechanism for the common beam and a mechanism for activating the common beam.

[0028] The beam indication method and device provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0029] like Figure 2 As shown, this application embodiment provides a beam indication method 200, which can be executed by a terminal. In other words, the method can be executed by software or hardware installed on the terminal, and the method includes the following steps.

[0030] S202: The terminal receives a first signaling message, which is used to indicate the Transmission Configuration Indicator (TCI) state, which is used to indicate the common beam of at least two channels or reference signals.

[0031] In this embodiment of the application, the first signaling may be the first downlink control information (DCI) or the first media access control element (MAC CE).

[0032] The TCI state indicated by the first signaling can be used to indicate a common beam shared by at least two channels or reference signals. For example, the TCI state can be used to indicate a common beam shared by at least two channels; or the TCI state can be used to indicate a common beam shared by at least two reference signals; or the TCI state can be used to indicate a common beam shared by at least one channel and at least one reference signal.

[0033] The channels mentioned above may include, for example, the Physical Uplink Control Channel (PUCCH), the Physical Uplink Shared Channel (PUSCH), the Physical Downlink Control Channel (PDCCH), and the Physical Downlink Shared Channel (PDSCH).

[0034] The reference signals mentioned above may include, for example, sounding reference signals (SRS), channel state information-reference signals (CSI-RS), and positioning reference signals (PRS).

[0035] S204: Send feedback information for the first signaling, wherein the feedback information for the first signaling includes one of the following: feedback information for the first target channel, the second target channel, and the target reference signal.

[0036] In this embodiment, the first target channel can be a downlink channel, which can be scheduled by a first signaling or by other scheduling signaling. The second target channel can be an uplink channel, which can be scheduled by the first signaling or by other scheduling signaling. The target reference signal can be an uplink reference signal such as SRS, which can be scheduled or triggered by the first signaling or by other scheduling signaling.

[0037] In this embodiment of the application, the network-side device may use the feedback information of the first target channel, the second target channel, or the target reference signal as the feedback information of the first signaling.

[0038] For example, if the feedback information on the first target channel is an acknowledgment (ACK), the network-side device can consider the feedback information of the first signaling to be ACK; if the feedback information on the first target channel is a negative acknowledgment (NACK), the network-side device can consider the feedback information of the first signaling to be NACK.

[0039] For example, if the network-side device successfully receives the second target channel, the feedback information of the first signaling can be considered as ACK; if the network-side device fails to receive the second target channel, the feedback information of the first signaling can be considered as NACK.

[0040] For example, the network-side equipment uses sequence correlation detection on the target reference signal and determines whether the feedback information of the first signaling is ACK / NACK based on the detection result (comparison of the correlation peak with a preset threshold). Specifically, if the correlation peak of the target reference signal is greater than or equal to the preset threshold, the feedback information of the first signaling is considered ACK; if the correlation peak of the target reference signal is less than the preset threshold, the feedback information of the first signaling is considered NACK.

[0041] In this embodiment, the network-side device can indicate the common beam of at least two channels or reference signals through the first signaling. Compared with indicating the beams of the at least two channels or reference signals separately, this can save signaling overhead. In addition, in this embodiment, the feedback information of the first target channel, the second target channel, or the target reference signal can be used as the feedback information of the first signaling. The network-side device can promptly know whether the terminal side has successfully received the first signaling, which facilitates the subsequent transmission of the channel or reference signal through the aforementioned common beam and improves communication efficiency.

[0042] In this embodiment, the feedback information of the first target channel, the second target channel, or the target reference signal are indirectly used as the feedback information of the first signaling, which ensures the robustness of the common beam indication mechanism and the consistent understanding of the common beam effect between the network-side equipment and the terminal, thereby improving system performance.

[0043] In this embodiment, the feedback information of the first target channel, the second target channel, or the target reference signal are indirectly used as the feedback information of the first signaling, eliminating the need to set additional feedback information for the first signaling and saving the signaling overhead required to set additional feedback information.

[0044] To explain in detail the beam indication method provided in the embodiments of this application, the following will describe in detail the indication method of the common beam, the feedback mechanism of the first signaling, and the activation mechanism of the common beam in three aspects.

[0045] The first aspect will mainly introduce the indication method of the common beam, corresponding to step S202 in embodiment 200.

[0046] In the first example, the first signaling includes a first DCI. Before the terminal receives the first signaling in S202, the following steps may also be included: receiving a first MAC CE signaling, which is used to activate N1 groups of TCI states, where N1 is a positive integer; wherein the first DCI is used to indicate a group of TCI states from the N1 groups of TCI states. In this example, each group of TCI states may include one or more TCI states.

[0047] In the second example, the first signaling includes a second MAC CE signaling, which indicates K groups of TCI states, where K is a positive integer, for example, K can be equal to 1. In this example, each group of TCI states may include one or more TCI states. In this example, the DCI used for downlink and uplink scheduling may no longer indicate TCI states.

[0048] Optionally, when K≥2, between S202 and S204, the method further includes: the terminal determining a set of TCI states from the K sets of TCI states based on at least one of the following: a preset rule (such as a protocol agreement), a third MAC CE signaling indication, and a second DCI indication.

[0049] For example, the protocol stipulates that among the reference signals included in the K groups of TCI states, the group of TCI states corresponding to the reference signal with the smallest number, or the group of TCI states with the smallest group number, or the TCI state with the earliest position in the group, shall be used as the TCI state for the terminal.

[0050] Optionally, in the first and second examples above, the N1 group of TCI states or the K group of TCI states satisfy at least one of the following:

[0051] 1) Each TCI state group includes the shared TCI state for both downlink and uplink.

[0052] For example, in a single TRP scenario, in the first example, each of the N1 groups of TCI states includes a shared TCI state for both the downlink and uplink, and each TCI state corresponds to a codepoint in the TCI signaling field of the first DCI. The specific correspondence is as follows: Codepoint – {joint TCI state}.

[0053] In the second example above, the format of each TCI state in the second MAC CE signaling includes, for example, {joint TCIstate}.

[0054] 2) Each TCI state group includes the downlink TCI state and / or the uplink TCI state.

[0055] For example, in a single TRP scenario, in the first example, each of the N1 groups of TCI states may include a downlink TCI state and / or an uplink TCI state, and each group of TCI states corresponds to a code point in the TCI signaling field of the first DCI. The specific correspondence is as follows: Codepoint – {DL TCI state, UL TCI state}.

[0056] In the second example above, the format of each TCI state in the second MAC CE signaling includes, for example, {DL TCIstate,UL TCI state}.

[0057] 3) Each TCI state group includes the shared TCI state for the downlink and uplink corresponding to each TRP identifier.

[0058] For example, in a single DCI scenario with multiple TRPs, in the first example, each of the N1 groups of TCI states includes a shared TCI state for the downlink and uplink corresponding to each TRP identifier. Each group of TCI states corresponds to a codepoint in the TCI signaling domain of the first DCI. The specific correspondence is as follows: Codepoint – {joint TCI state for TRP1, joint TCI state for TRP2, ...}.

[0059] In the second example above, the format of each TCI state in the second MAC CE signaling includes, for example, {joint TCIstate for TRP1, joint TCI state for TRP2, ...}.

[0060] 4) Each TCI status group includes the downlink TCI status and / or uplink TCI status corresponding to each TRP identifier.

[0061] For example, in a single DCI scenario with multiple TRPs, in the first example, each of the N1 groups of TCI states may include the downlink TCI state and / or uplink TCI state corresponding to each TRP identifier. Each group of TCI states corresponds to a codepoint in the TCI signaling field of the first DCI. The following example is for illustration only, and the order can be agreed upon by protocol: Codepoint – {DL TCI state for TRP1, UL TCI state, DL TCI state for TRP1, DL TCI state for TRP2, UL TCI state, DL TCI state for TRP2, ...}.

[0062] In the second example above, the format of each TCI state in the second MAC CE signaling includes, for example: {DL TCI state for TRP1, UL TCI state DL TCI state for TRP1, DL TCI state for TRP2, ULTCI state DL TCI state for TRP2, ...}.

[0063] 5) Each TCI state group includes a shared TCI state for the downlink and uplink corresponding to a TRP identifier.

[0064] For example, in a multi-DCI scenario with multiple TRPs, in the first example, each of the N1 groups of TCI states includes a shared TCI state for both the downlink and uplink corresponding to a TRP identifier. In the second example above, the format of each group of TCI states in the second MAC CE signaling can refer to the format of the TCI states in the first DCI.

[0065] 6) Each TCI status group includes the downlink TCI status and / or uplink TCI status corresponding to a TRP identifier.

[0066] For example, in a multi-DCI scenario with multiple TRPs, in the first example, each of the N1 groups of TCI states includes a shared TCI state for both the downlink and uplink corresponding to a TRP identifier. In the second example above, the format of each group of TCI states in the second MAC CE signaling can refer to the format of the TCI states in the first DCI.

[0067] For example, if the first signaling is the first DCI, then each TCI state corresponds to a code point in the TCI signaling field of the first DCI.

[0068] Optionally, in the first and second examples above, before S202, the terminal may also receive configuration information, which is used to configure at least one of the following:

[0069] 1) The first signaling is used to indicate the TCI status in a single TRP scenario or to indicate the TCI status in a multi-TRP scenario. The multi-TRP scenario can be further extended to indicate the TCI status in single DCI mode and multi-DCI mode.

[0070] 2) The first signaling is used to indicate the TCI status of single DCI mode or multiple DCI mode in a multi-TRP scenario;

[0071] 3) The TCI state used for the uplink and the TCI state used for the downlink are either shared or independent.

[0072] In the third example, when the TCI states of the uplink and downlink are different, the first signaling mentioned in embodiment 200 includes a first DCI. Before the terminal receives the first signaling, the method further includes: receiving a fourth MAC CE signaling, the fourth MAC CE signaling being used to activate the N2 group of TCI states for the uplink; receiving a fifth MAC CE command, the fifth MAC CE command being used to activate the N3 group of TCI states for the downlink; the first DCI being used to indicate a set of TCI states from the N2 group of TCI states and to indicate a set of TCI states from the N3 group of TCI states, where N2 and N3 are positive integers.

[0073] In this example, the fourth MAC CE signaling and the fifth MAC CE command can be the same or different.

[0074] Optionally, for the six cases 1) to 6) listed in the first and second examples above, or for the embodiment of the third example above, the following steps may also be included: the terminal determines whether the target TCI state in each group of TCI states is used for the uplink or for the downlink based on at least one of the following: or determines the TRP identifier corresponding to the target TCI state in each group of TCI states:

[0075] 1) The order or position of the target TCI states.

[0076] 2) The code point corresponding to the target TCI state is used for the downlink or uplink.

[0077] 3) The TRP identifier corresponding to the code point of the target TCI state.

[0078] 4) The target TCI state is selected from the TCI state pool. For example, TCI states from the downlink TCI state pool are used for downlink, and TCI states from the uplink TCI state pool are used for uplink.

[0079] The first aspect described above mainly introduced the indication method of the common beam. The feedback mechanism of the first signaling will be described in detail below in conjunction with the second aspect, corresponding to step S204 in embodiment 200.

[0080] In the first example, the first signaling includes a first DCI, which is also used to schedule downlink or uplink channels, such as PDSCH or PUSCH; wherein the first target channel is the downlink channel scheduled by the first DCI, and the second target channel is the uplink channel scheduled by the first DCI. For example, in this example, the feedback information of the first DCI can be determined based on the feedback information of the PDSCH scheduled by the first DCI. For example, the ACK information of the PDSCH can be used as the ACK information of the first DCI.

[0081] In the second example, the first signaling includes a first DCI, which has no scheduled downlink or uplink channels; wherein, the first target channel is the nearest downlink channel before the reception time of the first DCI (which may be scheduled by other DCIs besides the first DCI), and the second target channel is the nearest uplink channel before the reception time of the first DCI (which may be scheduled by other DCIs besides the first DCI); or the first target channel is the nearest downlink channel after the reception time of the first DCI, and the second target channel is the nearest uplink channel after the reception time of the first DCI.

[0082] In this example, the first target channel is scheduled by other DCIs besides the first DCI. This embodiment does not restrict the transmission order of other DCIs and the first DCI.

[0083] In the third example, the first signaling includes a first DCI, which has no scheduled downlink or uplink channels; wherein, the first target channel is the downlink channel most recently after a first preset duration following the reception time of the first DCI, and the second target channel is the uplink channel most recently after the reception time of the first DCI.

[0084] Compared to the second example above, this example avoids the problem of inaccurate feedback information caused by the short time interval between the first DCI and other DCI scheduled channels or the incomplete decoding of the first DCI. By limiting the first preset duration, the reception and decoding time of the first DCI is taken into account, thereby improving the accuracy of the feedback information.

[0085] For the three examples above, the feedback information of the first target channel is feedback information based on code block group (CBG); wherein, if there is at least one ACK among the feedback information of multiple CBGs corresponding to the first target channel, the network-side device can consider the feedback information of the first DCI to be ACK.

[0086] For the three examples above, the feedback information of the first target channel includes feedback information of the downlink channel (which may or may not be scheduled by the first DCI); wherein, the network-side device takes the ACK or NACK of the downlink channel as the ACK of the first DCI; and / or if the network-side device does not receive the feedback information of the downlink channel, the network-side device considers the feedback information of the first DCI to be NACK.

[0087] This example takes into account that if the downlink channel has a large amount of data, the first DCI can still be successfully received even if the downlink channel fails to decode.

[0088] Optionally, when the second target channel includes a PUSCH, the network-side device determines the feedback information of the first signaling based on whether the PUSCH has been correctly received. For example, if the network-side device correctly receives the PUSCH, it determines the feedback information of the first signaling as ACK; if the network-side device does not correctly receive the PUSCH, it determines the feedback information of the first signaling as NACK.

[0089] For the three examples above, the first target channel, its feedback information, or the beam of the second target channel must satisfy one of the following:

[0090] 1) Use the common beam indicated by the first signaling.

[0091] 2) Use the currently used common beam, which may be different from the common beam indicated by the first signaling.

[0092] 3) After a second preset time period following the reception time of the first DCI, the first target channel or the feedback information of the first target channel or the second target channel uses the common beam indicated by the first DCI.

[0093] 4) When the time interval between the DCI of the first target channel and the first DCI reaches a preset value, the first target channel or the feedback information of the first target channel uses the common beam indicated by the first DCI.

[0094] 5) When the time interval between the DCI of the second target channel and the first DCI reaches a preset value, the second target channel uses the common beam indicated by the first DCI.

[0095] For the three examples above, the second target channel includes PUSCH, and the method further includes: receiving a third DCI, and determining whether the network-side device has received feedback information of the first signaling based on the third DCI.

[0096] The aforementioned feedback information regarding whether the network-side device has received the first signaling, based on the third DCI, includes: if the HARQ process number used by the third DCI to schedule the second PUSCH is the same as the HARQ process number used by the first PUSCH, and the third DCI includes a New Data Indicator (NDI) field value that has not been flipped, then it is determined that the network-side device has received the feedback information regarding the first signaling, and the first PUSCH is the second target channel. The first PUSCH can be scheduled by the first DCI or by other DCIs besides the first DCI.

[0097] The first three examples in the second aspect mainly illustrate the case where the feedback information of the first signaling is either the feedback information of the first target channel or the second target channel. The following will illustrate the case where the feedback information of the first signaling is the target reference signal.

[0098] In the fourth example, the first signaling includes a first DCI, which is further used to trigger an aperiodic sounding reference signal (SRS); wherein the target reference signal is the SRS.

[0099] In the fifth example, the first signaling includes a first DCI, which does not trigger an aperiodic SRS; wherein the target reference signal is the most recent SRS before or after the reception time of the first DCI; or the target reference signal is the SRS triggered by the most recent DCI before or after the reception time of the first DCI.

[0100] In the sixth example, the first signaling includes a first DCI, which does not trigger an aperiodic SRS; wherein the target reference signal is the SRS at the most recent time after the third preset time after the reception time of the first DCI.

[0101] Compared to the fifth example above, this example avoids the problem of inaccurate feedback information caused by the time interval between the SRS triggered by the first DCI and other DCIs being too short or the first DCI not being fully decoded; by limiting the third preset duration, the reception and decoding time of the first DCI is taken into account, thereby improving the accuracy of the feedback information.

[0102] In the seventh example, the first signaling includes a first DCI; the target reference signal is the nearest SRS before or after the reception time of the first DCI; wherein the SRS is a periodic or semi-persistent SRS.

[0103] In the eighth example, the first signaling includes a first DCI, the first DCI carries triggering signaling, the triggering signaling is associated with a periodic or semi-persistent SRS, and the feedback information for sending the first signaling includes: sending the first SRS based on the triggering signaling; the first SRS is the periodic or semi-persistent SRS, or the first SRS is different from the periodic or semi-persistent SRS; wherein, the target reference signal is the first SRS.

[0104] Optionally, the target slot offset value of the first SRS is obtained based on at least one of the following:

[0105] 1) The slot offset value of the periodic or semi-persistent SRS;

[0106] 2) The first DCI indicates; the target time slot offset value indicated by the first DCI may be different from the time slot offset value in 1).

[0107] 3) High-level parameter configuration.

[0108] For example, the periodic or semi-persistent SRS has a period of 10 milliseconds and is transmitted at time domain positions 0, 10, 20, 30, ... At time domain position 0, the terminal receives the first DCI, and the target time slot offset value indicated by the first DCI is 5 milliseconds. The terminal can then additionally transmit the first SRS at time domain position 5, meaning the target time slot offset value is 5 milliseconds as indicated by the first DCI or configured by higher-layer parameters. Alternatively, the terminal can ignore the aforementioned 5-millisecond limitation of the DCI indication or higher-layer parameter configuration and not additionally transmit the SRS at time domain position 5; the first SRS is the periodic or semi-persistent SRS transmitted at time domain position 10.

[0109] Optionally, the method further includes: when the transmission time of the first SRS is different from the transmission time of the periodic or semi-persistent SRS, transmitting the periodic or semi-persistent SRS based on the reception time of the first DCI, the target time slot offset value, and the period of the periodic or semi-persistent SRS.

[0110] Continuing with the previous example, after the terminal sends the first SRS at time domain position 5, the positions of subsequent SRSs change from 10, 20, 30, ... to 15, 25, 35, ... Of course, in other examples, the sending positions of subsequent SRSs may remain unchanged, continuing to be sent at time domain positions of 10, 20, 30, ...

[0111] Optionally, for the SRS mentioned in examples four through eight above as the target reference signal, the DCI that triggers these SRS, i.e., triggers the target reference signal, satisfies at least one of the following:

[0112] 1) Set the Frequency Domain Resource Assignment (FDRA) field to 0;

[0113] 2) Cyclic Redundancy Check (CRC) is scrambled using the Cell Radio Network Temporary Identifier (C-RNTI).

[0114] In one embodiment, for example, the FDRA field of the trigger target reference signal DCI is set to 0 and the CRC of the DCI is scrambled by C-RNTI; in another embodiment, the FDRA field of the trigger target reference signal DCI is set to 0; in yet another embodiment, the CRC of the trigger target reference signal DCI is scrambled by C-RNTI.

[0115] In this embodiment, through the special settings of DCI described above, the terminal and network-side devices can determine that the SRS triggered by the DCI is used as feedback information for the first DCI.

[0116] In this embodiment, the triggering target reference signal DCI can be the first DCI, or it can be another DCI other than the first DCI.

[0117] Optionally, the SRS mentioned in examples four through eight above can be configured for one of the following purposes: antenna switching, codebook use, non-codebook use, or beam management.

[0118] Specifically, for example, when PUSCH is configured as a codebook, the SRS is used as a codebook; and / or, when PUSCH is configured as a non-codebook, the SRS is used as a non-codebook.

[0119] Optionally, the beams of the SRS mentioned in examples four through eight above satisfy at least one of the following:

[0120] 1) The beam configured for the SRS, such as the spatial relation configured for the SRS.

[0121] 2) The common beam indicated by the first signaling. For example, for SRS for codebook purposes, the channel link information, such as channel estimation, can be measured by using the TCI state indicated by the first DCI in the direction of the newly indicated common beam by the network-side equipment.

[0122] 3) The common beam currently used for transmission, i.e. the common beam previously used before the common beam indicated by the first signaling.

[0123] Alternatively, in the foregoing embodiments, the network-side device or terminal may also perform one of the following:

[0124] 1) Use any one of the feedback information of the first target channel, the second target channel, and the target reference signal as the feedback information of the first signaling;

[0125] 2) The feedback information of the first target channel, the second target channel, and the target reference signal transmitted first shall be used as the feedback information of the first signaling;

[0126] 3) The feedback information of the first target channel, the second target channel, and the target reference signal that is transmitted first after the sixth preset time after the first signaling transmission time shall be used as the feedback information of the first signaling.

[0127] 4) The feedback information of the first target channel is preferentially used as the feedback information of the first signaling;

[0128] 5) The second target channel is preferentially used as feedback information for the first signaling;

[0129] 6) The target signal is preferentially used as feedback information for the first signaling.

[0130] In this embodiment, for example, when both SRS and PDSCH feedback information are available, the feedback information of the first signaling can be determined based on either the PDSCH feedback information or the SRS feedback information; or, the feedback information of the first signaling can be determined based on either of the two, for example, the one transmitted first; or, the feedback information of the first signaling can be determined based on the one transmitted first, after a sixth preset time period following the first signaling; or, the feedback information of the PDSCH scheduled by the first signaling can be used preferentially, or the SRS triggered by the first signaling can be used preferentially; wherein, the first signaling may not simultaneously schedule the PDSCH and trigger the SRS.

[0131] The first aspect above mainly introduced the indication method of the common beam, and the second aspect mainly introduced the feedback mechanism of the first signaling. The following will introduce in detail the activation mechanism of the common beam indicated by the first signaling in conjunction with the third aspect.

[0132] In one example, Embodiment 200 further includes the following step: after the common beam is activated, transmitting a channel or reference signal through the common beam.

[0133] Optionally, the transmission of the channel or reference signal through the common beam after the common beam takes effect includes: after a fourth preset time period following the transmission of the feedback information of the first signaling (ACK), transmitting at least one of the following through the common beam: the first signaling, a DCI other than the first signaling, or an uplink channel carrying the feedback information of the first signaling. Before the fourth preset time period following the transmission of the feedback information of the first signaling, the transmission of the channel or reference signal continues using the currently used common beam.

[0134] Optionally, after a fourth preset time period following the transmission of the feedback information of the first signaling, at least one of the following transmissions is performed through the common beam: if the feedback information includes multiple ACK / NACKs of the first signaling, then after a fourth preset time period following the transmission of the latest ACK, at least one of the following transmissions is performed through the common beam: the first signaling, a DCI other than the first signaling, and an uplink channel carrying the feedback information of the first signaling.

[0135] For example, if the feedback information of the first signaling sent by the terminal includes ACK / NACK of multiple first signaling, then after a fourth preset time period following the most recent / latest / most recent ACK transmission, at least one of the following will be transmitted through the common beam. The "current time" mentioned here can be a time after all the aforementioned ACK / NACK transmissions have been completed.

[0136] For example, if the network-side device consecutively sends four first DCIs all indicating a common beam, the terminal encodes the feedback information of these four first DCIs together and sends them to the network-side device. The activation time of the common beam is determined by the last ACK among these four feedback messages. For example, if the four feedback messages are NACK, ACK, NACK, and ACK, the activation time of the common beam is determined by the last ACK.

[0137] Optionally, the plurality of first signaling signals indicate the same TCI state.

[0138] The fourth preset duration mentioned in the above example is predefined or configured by the network-side device. The value of the fourth preset duration supports at least one of the terminal's beam switching delay, antenna switching delay, and antenna panel switching delay.

[0139] Optionally, the uplink channel used to carry feedback information of PDSCH can use the TCI state indicated by the first signaling.

[0140] In the examples above, the uplink channel path loss reference signal (PL RS) and the common beam indicated by the first signaling are active simultaneously, wherein the PL RS is determined based on at least one of the following:

[0141] 1) Downlink RS in the TCI state indicated by the first signaling; further, the DL RS is a periodic RS.

[0142] 2) The downlink RS associated with the RS in the TCI state indicated by the first signaling; further, the RS in the TCI state is a semi-persistent RS or an aperiodic RS.

[0143] 3) If the source RS in the TCI state indicated by the first signaling is an SRS, then the PL RS is the path loss RS updated by MAC CE or the downlink RS associated with the SRS.

[0144] 4) If the TCI state indicated by the first signaling includes both the downlink TCI state and the uplink TCI state, and the uplink TCI state includes the SRS, then the PL RS is the downlink RS in the downlink TCI state or the PL RS updated by the MAC CE. Further, the uplink TCI state corresponds to the same TRP identifier as the DL RS or the downlink TCI state.

[0145] Optionally, the target reference signal includes an SRS, and the transmission of the channel or reference signal through the common beam after the common beam is activated includes at least one of the following:

[0146] 1) Between the transmission time of the SRS and the fifth preset duration, the current TCI state or the TCI state indicated by the first signaling is used to transmit the channel or reference signal;

[0147] 2) After a fifth preset time following the transmission time of the SRS, the channel or reference signal is transmitted using the TCI state indicated by the first signaling.

[0148] It should be noted that any two or three of the embodiments in the above three aspects can be combined to form new embodiments. To avoid repetition, they will not be listed one by one here.

[0149] It should also be noted that the preset durations mentioned in the various embodiments of this application, such as the first preset duration to the sixth preset duration, may be partially or completely equal, or they may be unequal respectively.

[0150] The above combination Figure 2A beam pointing method according to embodiments of this application is described in detail. The following will combine... Figure 3 A beam pointing method according to another embodiment of this application is described in detail. It will be understood that the interaction between the network-side device and the terminal, as described from the perspective of the network-side device, is... Figure 2 The terminal-side descriptions in the methods shown are the same; to avoid repetition, relevant descriptions have been omitted as appropriate.

[0151] Figure 3 This is a schematic diagram illustrating the implementation process of the beam indication method according to an embodiment of this application, which can be applied to network-side devices. For example... Figure 3 As shown, the method 300 includes:

[0152] S302: The network-side device sends a first signaling message, which is used to indicate the TCI status, and the TCI status is used to indicate the common beam of at least two channels or reference signals.

[0153] S304: Receive feedback information of the first signaling, wherein the feedback information of the first signaling includes one of the following: feedback information of the first target channel, the second target channel, and the target reference signal.

[0154] In this embodiment, the network-side device can indicate the common beam of at least two channels or reference signals through the first signaling. Compared with indicating the beams of the at least two channels or reference signals separately, this can save signaling overhead. In addition, in this embodiment, the feedback information of the first target channel, the second target channel, or the target reference signal can be used as the feedback information of the first signaling. The network-side device can promptly know whether the terminal side has successfully received the first signaling, which facilitates the subsequent transmission of the channel or reference signal through the aforementioned common beam and improves communication efficiency.

[0155] Optionally, as an embodiment, the first signaling includes a first DCI, and before the network-side device sends the first signaling, the method further includes:

[0156] Send the first MAC CE signaling, which is used to activate the N1 group TCI state;

[0157] Wherein, the first DCI is used to indicate a set of TCI states from the N1 sets of TCI states, where N1 is a positive integer.

[0158] Optionally, as an embodiment, the first signaling includes a second MAC CE signaling, which is used to indicate K groups of TCI states, where K is a positive integer.

[0159] Optionally, as an embodiment, when K≥2, the terminal is further configured to determine a set of TCI states from the K sets of TCI states based on at least one of the following:

[0160] Preset rules, third MAC CE signaling indication, second DCI indication.

[0161] Optionally, as an embodiment, the N1 group of TCI states or the K group of TCI states satisfy at least one of the following:

[0162] Each TCI state group includes a shared TCI state for both downlink and uplink;

[0163] Each TCI state group includes the downlink TCI state and / or the uplink TCI state.

[0164] Each TCI state includes the shared TCI state for the downlink and uplink corresponding to each TRP identifier;

[0165] Each TCI state group includes the downlink TCI state and / or uplink TCI state corresponding to each TRP identifier.

[0166] Each TCI state group includes a shared TCI state for both downlink and uplink corresponding to a TRP identifier;

[0167] Each TCI state group includes the downlink TCI state and / or uplink TCI state corresponding to a TRP identifier.

[0168] Optionally, as an embodiment, if the first signaling is the first DCI, then each group of TCI states corresponds to a code point in the TCI signaling field of the first DCI.

[0169] Optionally, as an embodiment, the method further includes: sending configuration information, the configuration information being used to configure at least one of the following:

[0170] The first signaling is used to indicate the TCI status in a single TRP scenario or to indicate the TCI status in a multi-TRP scenario;

[0171] The first signaling is used to indicate the TCI status in a single DCI mode or a multi-DCI mode in a multi-TRP scenario;

[0172] The TCI states used for uplink and downlink are either shared or independent.

[0173] Optionally, as an embodiment, the first signaling includes a first DCI, and before the network-side device sends the first signaling, the method further includes:

[0174] Send a fourth MAC CE signaling message, which is used to activate the TCI state of group N2 for the uplink;

[0175] Send a fifth MAC CE command, which is used to activate the TCI state of group N3 for downlink;

[0176] The first DCI is used to indicate a set of TCI states from the N2 sets of TCI states and to indicate a set of TCI states from the N3 sets of TCI states, where N2 and N3 are positive integers.

[0177] Optionally, as an embodiment, the terminal determines whether the target TCI state in each group of TCI states is used for the uplink or the downlink based on at least one of the following: or determines the TRP identifier corresponding to the target TCI state in each group of TCI states:

[0178] The order or position of the target TCI states;

[0179] The code point corresponding to the target TCI state is used for the downlink or uplink.

[0180] The TRP identifier corresponding to the code point of the target TCI state;

[0181] The target TCI state is selected from the TCI state pool.

[0182] Optionally, as an embodiment, the first signaling includes a first DCI, which is further used to schedule downlink or uplink channels;

[0183] Wherein, the first target channel is the downlink channel scheduled by the first DCI, and the second target channel is the uplink channel scheduled by the first DCI.

[0184] Optionally, as an embodiment, the first signaling includes a first DCI, wherein the first DCI is not scheduled for downlink or uplink channels;

[0185] Wherein, the first target channel is the nearest downlink channel before the transmission time of the first DCI, and the second target channel is the nearest uplink channel before the transmission time of the first DCI; or

[0186] The first target channel is the nearest downlink channel after the transmission time of the first DCI, and the second target channel is the nearest uplink channel after the transmission time of the first DCI.

[0187] Optionally, as an embodiment, the first signaling includes a first DCI, wherein the first DCI is not scheduled for downlink or uplink channels;

[0188] Wherein, the first target channel is the downlink channel at the most recent time after the transmission time of the first DCI, and the second target channel is the uplink channel at the most recent time after the transmission time of the first DCI, following the first preset time interval.

[0189] Optionally, as an embodiment, the feedback information of the first target channel is feedback information based on code block group (CBG);

[0190] If at least one ACK is present in the feedback information of the multiple CBGs corresponding to the first target channel, then the feedback information of the first DCI is ACK.

[0191] Optionally, as an embodiment, the feedback information of the first target channel includes feedback information of the downlink channel, and the method further includes:

[0192] Use the ACK or NACK of the downlink channel as the ACK of the first DCI; and / or

[0193] If no feedback information is received from the downlink channel, the feedback information of the first DCI is considered to be NACK.

[0194] Optionally, as an embodiment, the first target channel or the feedback information of the first target channel or the beam of the second target channel satisfies one of the following:

[0195] The common beam indicated by the first signaling;

[0196] The currently used common beam;

[0197] After a second preset time following the transmission time of the first DCI, the first target channel or the feedback information of the first target channel or the second target channel uses the common beam indicated by the first DCI.

[0198] When the time interval between the DCI of the first target channel and the first DCI reaches a preset value, the first target channel or the feedback information of the first target channel uses the common beam indicated by the first DCI.

[0199] When the time interval between the DCI of the second target channel and the first DCI reaches a preset value, the second target channel uses the common beam indicated by the first DCI.

[0200] Optionally, as an embodiment, the second target channel includes PUSCH, and the method further includes:

[0201] The feedback information for the first signaling is determined based on whether the PUSCH is received correctly.

[0202] Optionally, as an embodiment, the second target channel includes PUSCH, and the method further includes:

[0203] A third DCI is sent, which is used by the terminal to determine whether the network-side device has received feedback information from the first signaling.

[0204] Optionally, as an embodiment, if the HARQ process number used by the third DCI to schedule the second PUSCH is the same as the HARQ process number used by the first PUSCH, and the third DCI includes a New Data Indicator (NDI) field value that has not been flipped, then the terminal determines that the network-side device has received feedback information from the first signaling, and the first PUSCH is the second target channel.

[0205] Optionally, as an embodiment, the first signaling includes a first DCI, which is further used to trigger an aperiodic sounding reference signal (SRS).

[0206] The target reference signal is the SRS.

[0207] Optionally, as an embodiment, the first signaling includes a first DCI, which does not trigger an aperiodic SRS;

[0208] Wherein, the target reference signal is the nearest SRS before or after the transmission time of the first DCI; or

[0209] The target reference signal is the SRS triggered by the nearest DCI before or after the transmission time of the first DCI.

[0210] Optionally, as an embodiment, the first signaling includes a first DCI, which does not trigger an aperiodic SRS;

[0211] The target reference signal is the SRS at the most recent time after the third preset time period following the transmission time of the first DCI.

[0212] Optionally, as an embodiment, the first signaling includes a first DCI; the target reference signal is the nearest SRS before or after the transmission time of the first DCI;

[0213] The SRS is a periodic or semi-persistent SRS.

[0214] Optionally, as an embodiment, the first signaling includes a first DCI, the first DCI carrying triggering signaling, the triggering signaling being associated with a periodic or semi-persistent SRS, and the feedback information for receiving the first signaling includes:

[0215] The first SRS is received based on the trigger signaling; the first SRS is the periodic or semi-persistent SRS, or the first SRS is different from the periodic or semi-persistent SRS.

[0216] The target reference signal is the first SRS.

[0217] Optionally, as an embodiment, the target slot offset value of the first SRS is obtained based on at least one of the following:

[0218] The time slot offset value of the periodic or semi-persistent SRS;

[0219] The first DCI indicates;

[0220] High-level parameter configuration.

[0221] Optionally, as an embodiment, the method further includes:

[0222] When the reception time of the first SRS is different from the reception time of the periodic or semi-persistent SRS, the periodic or semi-persistent SRS is received based on the transmission time of the first DCI, the target time slot offset value, and the period of the periodic or semi-persistent SRS.

[0223] Optionally, as an embodiment, the DCI that triggers the target reference signal satisfies at least one of the following:

[0224] The FDRA field is set to 0;

[0225] CRC is scrambled using C-RNTI.

[0226] Alternatively, as an embodiment, the SRS is configured to be used in one of the following ways:

[0227] Antenna switching, codebook use, non-codebook use, beam management.

[0228] Alternatively, as an example,

[0229] When PUSCH is configured as a codebook, the purpose of the SRS is as a codebook; and / or

[0230] When PUSCH is configured as a non-codebook, the SRS is used as a non-codebook.

[0231] Optionally, as an embodiment, the beam of the SRS satisfies at least one of the following:

[0232] Beams configured for the SRS;

[0233] The common beam indicated by the first signaling;

[0234] The common beam currently used for transmission.

[0235] Optionally, as an embodiment, the method further includes one of the following:

[0236] The feedback information of the first target channel, the second target channel, and any one of the target reference signal are used as the feedback information of the first signaling.

[0237] The feedback information of the first target channel, the second target channel, and the target reference signal transmitted first shall be used as the feedback information of the first signaling;

[0238] The feedback information of the first target channel, the feedback information of the second target channel, and the target reference signal that is transmitted first after a sixth preset time after the first signaling transmission time shall be used as the feedback information of the first signaling.

[0239] The feedback information of the first target channel is preferentially used as the feedback information of the first signaling;

[0240] The second target channel is preferentially used as feedback information for the first signaling;

[0241] The target signal is preferentially used as feedback information for the first signaling.

[0242] Optionally, as an embodiment, the method further includes:

[0243] After the common beam is activated, the channel or reference signal is transmitted through the common beam.

[0244] Optionally, as an embodiment, the transmission of the channel or reference signal through the common beam after the common beam takes effect includes:

[0245] After the feedback information of the first signaling is ACK, and after a fourth preset time period following the receipt of the feedback information of the first signaling, at least one of the following transmissions is performed through the common beam:

[0246] The first signaling, the DCI other than the first signaling, and the uplink channel carrying feedback information of the first signaling.

[0247] Optionally, as an embodiment, after a fourth preset time period following the receipt of the feedback information of the first signaling, transmission via the common beam includes at least one of the following:

[0248] If the feedback information includes multiple ACK / NACKs of the first signaling, then after a fourth preset time interval following the receipt of the latest ACK, at least one of the following transmissions will be performed through the common beam:

[0249] The first signaling, the DCI other than the first signaling, and the uplink channel carrying feedback information of the first signaling.

[0250] Alternatively, as an example, the plurality of first signaling signals indicate the same TCI state.

[0251] Optionally, as an embodiment, the fourth preset duration is predefined or configured by the network-side device, and the value of the fourth preset duration supports at least one of the terminal's beam switching delay, antenna switching delay, and antenna panel switching delay.

[0252] Optionally, as an embodiment, the uplink channel path loss reference signal PLRS is active simultaneously with the common beam, wherein the PLRS is determined based on at least one of the following:

[0253] The downlink RS in the TCI state indicated by the first signaling;

[0254] The downlink RS associated with the RS in the TCI state indicated by the first signaling;

[0255] If the source RS in the TCI state indicated by the first signaling is an SRS, then the PL RS is the path loss RS updated by MAC CE or the downlink RS associated with the SRS.

[0256] If the TCI state indicated by the first signaling includes the TCI state of the downlink and the TCI state of the uplink, and the TCI state of the uplink includes the SRS, then the PL RS is the downlink RS in the TCI state of the downlink or the PL RS updated by MAC CE.

[0257] Optionally, as an embodiment, the target reference signal includes an SRS, and the transmission of the channel or reference signal through the common beam after the common beam is activated includes at least one of the following:

[0258] Between the SRS reception time and the fifth preset duration, the current TCI state or the TCI state indicated by the first signaling is used for the transmission of the channel or reference signal.

[0259] After a fifth preset time following the SRS reception time, the channel or reference signal is transmitted using the TCI state indicated by the first signaling.

[0260] It should be noted that the beam pointing method provided in this application embodiment can be executed by a beam pointing device, or by a control module of the beam pointing device for executing the beam pointing method. This application embodiment uses the execution of the beam pointing method by a beam pointing device as an example to illustrate the beam pointing device provided in this application embodiment.

[0261] Figure 4 This is a schematic diagram of a beam pointing device according to an embodiment of this application. This device may correspond to a terminal in other embodiments. Figure 4 As shown, the device 400 includes:

[0262] The receiving module 402 can be used to receive a first signaling, the first signaling being used to indicate the TCI state, the TCI state being used to indicate the common beam of at least two channels or reference signals;

[0263] The transmitting module 404 can be used to transmit feedback information of the first signaling, wherein the feedback information of the first signaling includes one of the following: feedback information of the first target channel, the second target channel, and the target reference signal.

[0264] In this embodiment, the network-side device can indicate the common beam of at least two channels or reference signals through the first signaling. Compared with indicating the beams of the at least two channels or reference signals separately, this can save signaling overhead. In addition, in this embodiment, the feedback information of the first target channel, the second target channel, or the target reference signal can be used as the feedback information of the first signaling. The network-side device can promptly know whether the terminal side has successfully received the first signaling, which facilitates the subsequent transmission of the channel or reference signal through the aforementioned common beam and improves communication efficiency.

[0265] Optionally, as an embodiment, the first signaling includes first downlink control information (DCI), and the receiving module 402 can also be used for:

[0266] Receive the first Media Access Control Unit (MAC CE) signaling, which is used to activate the N1 group TCI state;

[0267] Wherein, the first DCI is used to indicate a set of TCI states from the N1 sets of TCI states, where N1 is a positive integer.

[0268] Optionally, as an embodiment, the first signaling includes a second MAC CE signaling, which is used to indicate K groups of TCI states, where K is a positive integer.

[0269] Optionally, as an embodiment, when K≥2, the device 400 further includes a determining module for determining a set of TCI states from the K sets of TCI states based on at least one of the following:

[0270] Preset rules, third MAC CE signaling indication, second DCI indication.

[0271] Optionally, as an embodiment, the N1 group of TCI states or the K group of TCI states satisfy at least one of the following:

[0272] Each TCI state group includes a shared TCI state for both downlink and uplink;

[0273] Each TCI state group includes the downlink TCI state and / or the uplink TCI state.

[0274] Each TCI state includes the shared TCI state for the downlink and uplink corresponding to each TRP identifier;

[0275] Each TCI state group includes the downlink TCI state and / or uplink TCI state corresponding to each TRP identifier.

[0276] Each TCI state group includes a shared TCI state for both downlink and uplink corresponding to a TRP identifier;

[0277] Each TCI state group includes the downlink TCI state and / or uplink TCI state corresponding to a TRP identifier.

[0278] Optionally, as an embodiment, if the first signaling is the first DCI, then each group of TCI states corresponds to a code point in the TCI signaling field of the first DCI.

[0279] Optionally, as an embodiment, the receiving module 402 can also be used to receive configuration information, the configuration information being used to configure at least one of the following:

[0280] The first signaling is used to indicate the TCI status in a single TRP scenario or to indicate the TCI status in a multi-TRP scenario;

[0281] The first signaling is used to indicate the TCI status in a single DCI mode or a multi-DCI mode in a multi-TRP scenario;

[0282] The TCI states used for uplink and downlink are either shared or independent.

[0283] Optionally, as an embodiment, the first signaling includes a first DCI, and the receiving module 402 can also be used to receive a fourth MAC CE signaling, which is used to activate the TCI state of group N2 for the uplink;

[0284] Receive the fifth MAC CE command, which is used to activate the TCI state of group N3 for downlink;

[0285] The first DCI is used to indicate a set of TCI states from the N2 sets of TCI states and to indicate a set of TCI states from the N3 sets of TCI states, where N2 and N3 are positive integers.

[0286] Optionally, as an embodiment, the device 400 further includes a determining module, configured to determine whether a target TCI state in each group of TCI states is used for the uplink or the downlink, or to determine the TRP identifier corresponding to the target TCI state in each group of TCI states based on at least one of the following:

[0287] The order or position of the target TCI states;

[0288] The code point corresponding to the target TCI state is used for the downlink or uplink.

[0289] The TRP identifier corresponding to the code point of the target TCI state;

[0290] The target TCI state is selected from the TCI state pool.

[0291] Optionally, as an embodiment, the first signaling includes a first DCI, which is further used to schedule downlink or uplink channels;

[0292] Wherein, the first target channel is the downlink channel scheduled by the first DCI, and the second target channel is the uplink channel scheduled by the first DCI.

[0293] Optionally, as an embodiment, the first signaling includes a first DCI, wherein the first DCI is not scheduled for downlink or uplink channels;

[0294] Wherein, the first target channel is the nearest downlink channel before the reception time of the first DCI, and the second target channel is the nearest uplink channel before the reception time of the first DCI; or

[0295] The first target channel is the nearest downlink channel after the reception time of the first DCI, and the second target channel is the nearest uplink channel after the reception time of the first DCI.

[0296] Optionally, as an embodiment, the first signaling includes a first DCI, wherein the first DCI is not scheduled for downlink or uplink channels;

[0297] Wherein, the first target channel is the downlink channel at the nearest moment after the reception time of the first DCI and after a first preset time, and the second target channel is the uplink channel at the nearest moment after the reception time of the first DCI and after a first preset time.

[0298] Optionally, as an embodiment, the feedback information of the first target channel is feedback information based on code block group (CBG);

[0299] If at least one ACK is present in the feedback information of the multiple CBGs corresponding to the first target channel, then the feedback information of the first DCI is ACK.

[0300] Optionally, as an embodiment, the feedback information of the first target channel includes feedback information of the downlink channel;

[0301] Wherein, the network-side device uses the ACK or NACK of the downlink channel as the ACK of the first DCI; and / or

[0302] If the network-side device does not receive feedback information from the downlink channel, the network-side device considers the feedback information of the first DCI to be NACK.

[0303] Optionally, as an embodiment, the first target channel or the feedback information of the first target channel or the beam of the second target channel satisfies one of the following:

[0304] The common beam indicated by the first signaling;

[0305] The currently used common beam;

[0306] After a second preset time period following the reception time of the first DCI, the first target channel or the feedback information of the first target channel or the second target channel uses the common beam indicated by the first DCI.

[0307] When the time interval between the DCI of the first target channel and the first DCI reaches a preset value, the first target channel or the feedback information of the first target channel uses the common beam indicated by the first DCI.

[0308] When the time interval between the DCI of the second target channel and the first DCI reaches a preset value, the second target channel uses the common beam indicated by the first DCI.

[0309] Optionally, as an embodiment, the second target channel includes a PUSCH, and the network-side device determines the feedback information of the first signaling based on whether the PUSCH is correctly received.

[0310] Optionally, as an embodiment, the second target channel includes PUSCH. The receiving module 402 can also be used to receive a third DCI and determine whether the network-side device has received feedback information of the first signaling based on the third DCI.

[0311] Optionally, as an embodiment, the step of determining whether the network-side device has received the first signaling based on the third DCI includes:

[0312] If the HARQ process number used by the third DCI to schedule the second PUSCH is the same as the HARQ process number used by the first PUSCH, and the third DCI includes the New Data Indicator (NDI) field value that has not been flipped, then it is determined that the network-side device has received feedback information from the first signaling, and the first PUSCH is the second target channel.

[0313] Optionally, as an embodiment, the first signaling includes a first DCI, which is further used to trigger an aperiodic sounding reference signal (SRS).

[0314] The target reference signal is the SRS.

[0315] Optionally, as an embodiment, the first signaling includes a first DCI, which does not trigger an aperiodic SRS;

[0316] Wherein, the target reference signal is the nearest SRS before or after the reception time of the first DCI; or

[0317] The target reference signal is the SRS triggered by the nearest DCI before or after the reception time of the first DCI.

[0318] Optionally, as an embodiment, the first signaling includes a first DCI, which does not trigger an aperiodic SRS;

[0319] The target reference signal is the SRS at the most recent time after the third preset time after the reception time of the first DCI.

[0320] Optionally, as an embodiment, the first signaling includes a first DCI; the target reference signal is the nearest SRS before or after the reception time of the first DCI;

[0321] The SRS is a periodic or semi-persistent SRS.

[0322] Optionally, as an embodiment, the first signaling includes a first DCI, the first DCI carries triggering signaling, the triggering signaling is associated with a periodic or semi-persistent SRS, and the sending module 404 can be used to: send the first SRS based on the triggering signaling; the first SRS is the periodic or semi-persistent SRS, or the first SRS is different from the periodic or semi-persistent SRS;

[0323] The target reference signal is the first SRS.

[0324] Optionally, as an embodiment, the target slot offset value of the first SRS is obtained based on at least one of the following:

[0325] The time slot offset value of the periodic or semi-persistent SRS;

[0326] The first DCI indicates;

[0327] High-level parameter configuration.

[0328] Optionally, as an embodiment, the sending module 404 can also be used for

[0329] When the transmission time of the first SRS is different from the transmission time of the periodic or semi-persistent SRS, the periodic or semi-persistent SRS is transmitted based on the reception time of the first DCI, the target time slot offset value, and the period of the periodic or semi-persistent SRS.

[0330] Optionally, as an embodiment, the DCI that triggers the target reference signal satisfies at least one of the following:

[0331] The FDRA field is set to 0;

[0332] CRC is scrambled using C-RNTI.

[0333] Alternatively, as an embodiment, the SRS is configured to be used in one of the following ways:

[0334] Antenna switching, codebook use, non-codebook use, beam management.

[0335] Alternatively, as an example,

[0336] When PUSCH is configured as a codebook, the purpose of the SRS is as a codebook; and / or

[0337] When PUSCH is configured as a non-codebook, the SRS is used as a non-codebook.

[0338] Optionally, as an embodiment, the beam of the SRS satisfies at least one of the following:

[0339] Beams configured for the SRS;

[0340] The common beam indicated by the first signaling;

[0341] The common beam currently used for transmission.

[0342] Optionally, as an embodiment, the receiving module 402 or the transmitting module 404 can be used to transmit channel or reference signals through the common beam after the common beam is activated.

[0343] Optionally, as an embodiment, the transmission of the channel or reference signal through the common beam after the common beam takes effect includes:

[0344] After the feedback information of the first signaling is ACK, and after a fourth preset time period following the transmission of the feedback information of the first signaling, at least one of the following transmissions is performed through the common beam:

[0345] The first signaling, the DCI other than the first signaling, and the uplink channel carrying feedback information of the first signaling.

[0346] Optionally, as an embodiment, after a fourth preset time period following the transmission of the feedback information of the first signaling, transmission via the common beam includes at least one of the following:

[0347] If the feedback information includes multiple ACK / NACKs of the first signaling, then after a fourth preset time period following the transmission of the latest ACK, at least one of the following transmissions will be performed through the common beam:

[0348] The first signaling, the DCI other than the first signaling, and the uplink channel carrying feedback information of the first signaling.

[0349] Alternatively, as an example, the plurality of first signaling signals indicate the same TCI state.

[0350] Optionally, as an embodiment, the fourth preset duration is predefined or configured by the network-side device, and the value of the fourth preset duration supports at least one of the beam switching delay, antenna switching delay, and antenna panel switching delay of the device 400.

[0351] Optionally, as an embodiment, the uplink channel path loss reference signal PLRS is active simultaneously with the common beam, wherein the PLRS is determined based on at least one of the following:

[0352] The downlink RS in the TCI state indicated by the first signaling;

[0353] The downlink RS associated with the RS in the TCI state indicated by the first signaling;

[0354] If the source RS in the TCI state indicated by the first signaling is an SRS, then the PL RS is the path loss RS updated by MAC CE or the downlink RS associated with the SRS.

[0355] If the TCI state indicated by the first signaling includes the TCI state of the downlink and the TCI state of the uplink, and the TCI state of the uplink includes the SRS, then the PL RS is the downlink RS in the TCI state of the downlink or the PL RS updated by MAC CE.

[0356] Optionally, as an embodiment, the target reference signal includes an SRS, and the transmission of the channel or reference signal through the common beam after the common beam is activated includes at least one of the following:

[0357] Between the transmission time of the SRS and the fifth preset duration, the current TCI state or the TCI state indicated by the first signaling is used for the transmission of the channel or reference signal.

[0358] After a fifth preset time following the transmission time of the SRS, the channel or reference signal is transmitted using the TCI state indicated by the first signaling.

[0359] The apparatus 400 according to the embodiments of this application can refer to the flow of the method 200 corresponding to the embodiments of this application. Furthermore, each unit / module in the apparatus 400 and the other operations and / or functions described above are respectively implemented to achieve the corresponding flow in the method 200 and can achieve the same or equivalent technical effects. For the sake of brevity, they will not be described in detail here.

[0360] The beam pointing device in this application embodiment can be a device, or a component, integrated circuit, or chip in a terminal. The device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminal 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not impose specific limitations.

[0361] The beam pointing device in this application embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this application embodiment does not specifically limit it.

[0362] The beam pointing device provided in this application embodiment can achieve... Figures 2 to 3 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0363] Figure 5 This is a schematic diagram of a beam pointing device according to an embodiment of this application. This device can correspond to network-side devices in other embodiments. Figure 5 As shown, the device 500 includes:

[0364] The transmitting module 502 can be used to transmit a first signaling, the first signaling being used to indicate the TCI state, the TCI state being used to indicate the common beam of at least two channels or reference signals;

[0365] The receiving module 504 can be used to receive feedback information of the first signaling, wherein the feedback information of the first signaling includes one of the following: feedback information of the first target channel, the second target channel, and the target reference signal.

[0366] In this embodiment, the network-side device can indicate the common beam of at least two channels or reference signals through the first signaling. Compared with indicating the beams of the at least two channels or reference signals separately, this can save signaling overhead. In addition, in this embodiment, the feedback information of the first target channel, the second target channel, or the target reference signal can be used as the feedback information of the first signaling. The network-side device can promptly know whether the terminal side has successfully received the first signaling, which facilitates the subsequent transmission of the channel or reference signal through the aforementioned common beam and improves communication efficiency.

[0367] Optionally, as an embodiment, the first signaling includes a first DCI, and the sending module 502 can also be used for:

[0368] Send the first MAC CE signaling, which is used to activate the N1 group TCI state;

[0369] Wherein, the first DCI is used to indicate a set of TCI states from the N1 sets of TCI states, where N1 is a positive integer.

[0370] Optionally, as an embodiment, the first signaling includes a second MAC CE signaling, which is used to indicate K groups of TCI states, where K is a positive integer.

[0371] Optionally, as an embodiment, when K≥2, the terminal is further configured to determine a set of TCI states from the K sets of TCI states based on at least one of the following:

[0372] Preset rules, third MAC CE signaling indication, second DCI indication.

[0373] Optionally, as an embodiment, the N1 group of TCI states or the K group of TCI states satisfy at least one of the following:

[0374] Each TCI state group includes a shared TCI state for both downlink and uplink;

[0375] Each TCI state group includes the downlink TCI state and / or the uplink TCI state.

[0376] Each TCI state includes the shared TCI state for the downlink and uplink corresponding to each TRP identifier;

[0377] Each TCI state group includes the downlink TCI state and / or uplink TCI state corresponding to each TRP identifier.

[0378] Each TCI state group includes a shared TCI state for both downlink and uplink corresponding to a TRP identifier;

[0379] Each TCI state group includes the downlink TCI state and / or uplink TCI state corresponding to a TRP identifier.

[0380] Optionally, as an embodiment, if the first signaling is the first DCI, then each group of TCI states corresponds to a code point in the TCI signaling field of the first DCI.

[0381] Optionally, as an embodiment, the sending module 502 can also be used to send configuration information, which is used to configure at least one of the following:

[0382] The first signaling is used to indicate the TCI status in a single TRP scenario or to indicate the TCI status in a multi-TRP scenario;

[0383] The first signaling is used to indicate the TCI status in a single DCI mode or a multi-DCI mode in a multi-TRP scenario;

[0384] The TCI states used for uplink and downlink are either shared or independent.

[0385] Optionally, as an embodiment, the first signaling includes a first DCI, and the sending module 502 can also be used for:

[0386] Send a fourth MAC CE signaling message, which is used to activate the TCI state of group N2 for the uplink;

[0387] Send a fifth MAC CE command, which is used to activate the TCI state of group N3 for downlink;

[0388] The first DCI is used to indicate a set of TCI states from the N2 sets of TCI states and to indicate a set of TCI states from the N3 sets of TCI states, where N2 and N3 are positive integers.

[0389] Optionally, as an embodiment, the terminal determines whether the target TCI state in each group of TCI states is used for the uplink or the downlink based on at least one of the following: or determines the TRP identifier corresponding to the target TCI state in each group of TCI states:

[0390] The order or position of the target TCI states;

[0391] The code point corresponding to the target TCI state is used for the downlink or uplink.

[0392] The TRP identifier corresponding to the code point of the target TCI state;

[0393] The target TCI state is selected from the TCI state pool.

[0394] Optionally, as an embodiment, the first signaling includes a first DCI, which is further used to schedule downlink or uplink channels;

[0395] Wherein, the first target channel is the downlink channel scheduled by the first DCI, and the second target channel is the uplink channel scheduled by the first DCI.

[0396] Optionally, as an embodiment, the first signaling includes a first DCI, wherein the first DCI is not scheduled for downlink or uplink channels;

[0397] Wherein, the first target channel is the nearest downlink channel before the transmission time of the first DCI, and the second target channel is the nearest uplink channel before the transmission time of the first DCI; or

[0398] The first target channel is the nearest downlink channel after the transmission time of the first DCI, and the second target channel is the nearest uplink channel after the transmission time of the first DCI.

[0399] Optionally, as an embodiment, the first signaling includes a first DCI, wherein the first DCI is not scheduled for downlink or uplink channels;

[0400] Wherein, the first target channel is the downlink channel at the most recent time after the transmission time of the first DCI, and the second target channel is the uplink channel at the most recent time after the transmission time of the first DCI, following the first preset time interval.

[0401] Optionally, as an embodiment, the feedback information of the first target channel is feedback information based on code block group (CBG);

[0402] If at least one ACK is present in the feedback information of the multiple CBGs corresponding to the first target channel, then the feedback information of the first DCI is ACK.

[0403] Optionally, as an embodiment, the feedback information of the first target channel includes feedback information of the downlink channel, and the device 500 further includes a determining module for:

[0404] Use the ACK or NACK of the downlink channel as the ACK of the first DCI; and / or

[0405] If no feedback information is received from the downlink channel, the feedback information of the first DCI is considered to be NACK.

[0406] Optionally, as an embodiment, the first target channel or the feedback information of the first target channel or the beam of the second target channel satisfies one of the following:

[0407] The common beam indicated by the first signaling;

[0408] The currently used common beam;

[0409] After a second preset time following the transmission time of the first DCI, the first target channel or the feedback information of the first target channel or the second target channel uses the common beam indicated by the first DCI.

[0410] When the time interval between the DCI of the first target channel and the first DCI reaches a preset value, the first target channel or the feedback information of the first target channel uses the common beam indicated by the first DCI.

[0411] When the time interval between the DCI of the second target channel and the first DCI reaches a preset value, the second target channel uses the common beam indicated by the first DCI.

[0412] Optionally, as an embodiment, the second target channel includes a PUSCH, and the device 500 further includes a determining module for determining feedback information of the first signaling based on whether the PUSCH is correctly received.

[0413] Optionally, as an embodiment, the second target channel includes PUSCH, and the transmitting module 502 can be used to transmit a third DCI, which is used by the terminal to determine whether the device 500 has received feedback information of the first signaling.

[0414] Optionally, as an embodiment, if the HARQ process number used by the third DCI to schedule the second PUSCH is the same as the HARQ process number used by the first PUSCH, and the third DCI includes a new data indication (NDI) field value that has not been flipped, then the terminal determines that the device 500 has received feedback information from the first signaling, and the first PUSCH is the second target channel.

[0415] Optionally, as an embodiment, the first signaling includes a first DCI, which is further used to trigger an aperiodic sounding reference signal (SRS).

[0416] The target reference signal is the SRS.

[0417] Optionally, as an embodiment, the first signaling includes a first DCI, which does not trigger an aperiodic SRS;

[0418] Wherein, the target reference signal is the nearest SRS before or after the transmission time of the first DCI; or

[0419] The target reference signal is the SRS triggered by the nearest DCI before or after the transmission time of the first DCI.

[0420] Optionally, as an embodiment, the first signaling includes a first DCI, which does not trigger an aperiodic SRS;

[0421] The target reference signal is the SRS at the most recent time after the third preset time period following the transmission time of the first DCI.

[0422] Optionally, as an embodiment, the first signaling includes a first DCI; the target reference signal is the nearest SRS before or after the transmission time of the first DCI;

[0423] The SRS is a periodic or semi-persistent SRS.

[0424] Optionally, as an embodiment, the first signaling includes a first DCI, the first DCI carries triggering signaling, the triggering signaling is associated with a periodic or semi-persistent SRS, and the receiving module 504 can be used to receive the first SRS based on the triggering signaling; the first SRS is the periodic or semi-persistent SRS, or the first SRS is different from the periodic or semi-persistent SRS.

[0425] The target reference signal is the first SRS.

[0426] Optionally, as an embodiment, the target slot offset value of the first SRS is obtained based on at least one of the following:

[0427] The time slot offset value of the periodic or semi-persistent SRS;

[0428] The first DCI indicates;

[0429] High-level parameter configuration.

[0430] Optionally, as an embodiment, the receiving module 504 can also be used for:

[0431] When the reception time of the first SRS is different from the reception time of the periodic or semi-persistent SRS, the periodic or semi-persistent SRS is received based on the transmission time of the first DCI, the target time slot offset value, and the period of the periodic or semi-persistent SRS.

[0432] Optionally, as an embodiment, the DCI that triggers the target reference signal satisfies at least one of the following:

[0433] The FDRA field is set to 0;

[0434] CRC is scrambled using C-RNTI.

[0435] Alternatively, as an embodiment, the SRS is configured to be used in one of the following ways:

[0436] Antenna switching, codebook use, non-codebook use, beam management.

[0437] Alternatively, as an example,

[0438] When PUSCH is configured as a codebook, the purpose of the SRS is as a codebook; and / or

[0439] When PUSCH is configured as a non-codebook, the SRS is used as a non-codebook.

[0440] Optionally, as an embodiment, the beam of the SRS satisfies at least one of the following:

[0441] Beams configured for the SRS;

[0442] The common beam indicated by the first signaling;

[0443] The common beam currently used for transmission.

[0444] Optionally, as an embodiment, the device 500 further includes a determining module for one of the following:

[0445] The feedback information of the first target channel, the second target channel, and any one of the target reference signal are used as the feedback information of the first signaling.

[0446] The feedback information of the first target channel, the second target channel, and the target reference signal transmitted first shall be used as the feedback information of the first signaling;

[0447] The feedback information of the first target channel, the feedback information of the second target channel, and the target reference signal that is transmitted first after a sixth preset time after the first signaling transmission time shall be used as the feedback information of the first signaling.

[0448] The feedback information of the first target channel is preferentially used as the feedback information of the first signaling;

[0449] The second target channel is preferentially used as feedback information for the first signaling;

[0450] The target signal is preferentially used as feedback information for the first signaling.

[0451] Optionally, as an embodiment, the transmitting module 502 or the receiving module 504 can also be used to transmit channel or reference signals through the common beam after the common beam is activated.

[0452] Optionally, as an embodiment, the transmission of the channel or reference signal through the common beam after the common beam takes effect includes:

[0453] After the feedback information of the first signaling is ACK, and after a fourth preset time period following the receipt of the feedback information of the first signaling, at least one of the following transmissions is performed through the common beam:

[0454] The first signaling, the DCI other than the first signaling, and the uplink channel carrying feedback information of the first signaling.

[0455] Optionally, as an embodiment, after a fourth preset time period following the receipt of the feedback information of the first signaling, transmission via the common beam includes at least one of the following:

[0456] If the feedback information includes multiple ACK / NACKs of the first signaling, then after a fourth preset time interval following the receipt of the latest ACK, at least one of the following transmissions will be performed through the common beam:

[0457] The first signaling, the DCI other than the first signaling, and the uplink channel carrying feedback information of the first signaling.

[0458] Alternatively, as an example, the plurality of first signaling signals indicate the same TCI state.

[0459] Optionally, as an embodiment, the fourth preset duration is predefined or configured by the device 500, and the value of the fourth preset duration supports at least one of the terminal's beam switching delay, antenna switching delay, and antenna panel switching delay.

[0460] Optionally, as an embodiment, the uplink channel path loss reference signal PLRS is active simultaneously with the common beam, wherein the PLRS is determined based on at least one of the following:

[0461] The downlink RS in the TCI state indicated by the first signaling;

[0462] The downlink RS associated with the RS in the TCI state indicated by the first signaling;

[0463] If the source RS in the TCI state indicated by the first signaling is an SRS, then the PL RS is the path loss RS updated by MAC CE or the downlink RS associated with the SRS.

[0464] If the TCI state indicated by the first signaling includes the TCI state of the downlink and the TCI state of the uplink, and the TCI state of the uplink includes the SRS, then the PL RS is the downlink RS in the TCI state of the downlink or the PL RS updated by MAC CE.

[0465] Optionally, as an embodiment, the target reference signal includes an SRS, and the transmission of the channel or reference signal through the common beam after the common beam is activated includes at least one of the following:

[0466] Between the SRS reception time and the fifth preset duration, the current TCI state or the TCI state indicated by the first signaling is used for the transmission of the channel or reference signal.

[0467] After a fifth preset time following the SRS reception time, the channel or reference signal is transmitted using the TCI state indicated by the first signaling.

[0468] The apparatus 500 according to the embodiments of this application can refer to the flow of the method 300 corresponding to the embodiments of this application. Furthermore, each unit / module in the apparatus 500 and the other operations and / or functions described above are respectively implemented to achieve the corresponding flow in the method 300 and can achieve the same or equivalent technical effects. For the sake of brevity, they will not be described in detail here.

[0469] Optional, such as Figure 6 As shown, this application embodiment also provides a communication device 600, including a processor 601, a memory 602, and a program or instructions stored in the memory 602 and executable on the processor 601. For example, when the communication device 600 is a terminal, the program or instructions executed by the processor 601 implement the various processes of the above-described beam pointing method embodiment and achieve the same technical effect. When the communication device 600 is a network-side device, the program or instructions executed by the processor 601 implement the various processes of the above-described beam pointing method embodiment and achieve the same technical effect; to avoid repetition, further details are omitted here.

[0470] Figure 7 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0471] The terminal 700 includes, but is not limited to, components such as: radio frequency unit 701, network module 702, audio output unit 703, input unit 704, sensor 705, display unit 706, user input unit 707, interface unit 708, memory 709, and processor 710.

[0472] Those skilled in the art will understand that the terminal 700 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 710 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 7 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0473] It should be understood that, in this embodiment, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042. The GPU 7041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 706 may include a display panel 7061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0474] In this embodiment, the radio frequency unit 701 receives downlink data from the network-side device and processes it for the processor 710; additionally, it sends uplink data to the network-side device. Typically, the radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0475] The memory 709 can be used to store software programs or instructions and various data. The memory 709 may primarily include a program or instruction storage area and a data storage area. The program or instruction storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 709 may include high-speed random access memory and non-volatile memory, wherein the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. For example, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0476] Processor 710 may include one or more processing units; optionally, processor 710 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications or instructions, and the modem processor mainly handles wireless communication, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 710.

[0477] The radio frequency unit 701 is configured to receive a first signaling, the first signaling being used to indicate a transmission configuration indicating a TCI state, the TCI state being used to indicate a common beam of at least two channels or reference signals; and to send feedback information of the first signaling, wherein the feedback information of the first signaling includes one of the following: feedback information of a first target channel, a second target channel, or a target reference signal.

[0478] In this embodiment, the network-side device can indicate the common beam of at least two channels or reference signals through the first signaling. Compared with indicating the beams of the at least two channels or reference signals separately, this can save signaling overhead. In addition, in this embodiment, the feedback information of the first target channel, the second target channel, or the target reference signal can be used as the feedback information of the first signaling. The network-side device can promptly know whether the terminal side has successfully received the first signaling, which facilitates the subsequent transmission of the channel or reference signal through the aforementioned common beam and improves communication efficiency.

[0479] The terminal 700 provided in this application embodiment can also implement the various processes of the above-described beam indication method embodiment and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0480] Specifically, embodiments of this application also provide a network-side device. For example... Figure 8 As shown, the network-side device 800 includes: an antenna 81, a radio frequency (RF) device 82, and a baseband device 83. The antenna 81 is connected to the RF device 82. In the uplink direction, the RF device 82 receives information through the antenna 81 and transmits the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes the information to be transmitted and sends it to the RF device 82. The RF device 82 processes the received information and then transmits it through the antenna 81.

[0481] The aforementioned frequency band processing device can be located in the baseband device 83. The method executed by the network-side device in the above embodiments can be implemented in the baseband device 83, which includes a processor 84 and a memory 85.

[0482] Baseband device 83 may include, for example, at least one baseband board on which multiple chips are disposed, such as... Figure 8 As shown, one of the chips, for example, is a processor 84, which is connected to a memory 85 to call the program in the memory 85 and execute the network-side device operations shown in the above method embodiments.

[0483] The baseband device 83 may also include a network interface 86 for exchanging information with the radio frequency device 82, such as a common public radio interface (CPRI).

[0484] Specifically, the network-side device in this embodiment of the invention further includes: instructions or programs stored in memory 85 and executable on processor 84, wherein processor 84 calls the instructions or programs in memory 85 to execute. Figure 5 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0485] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described beam indication method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0486] The processor may be the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0487] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described beam indication method embodiments and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0488] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0489] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0490] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network-side device, etc.) to execute the methods described in the various embodiments of this application.

[0491] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A beam pointing method, characterized in that, The method includes: The terminal receives a first signaling, which is used to indicate the Transmission Configuration Indicator (TCI) state, and the TCI state is used to indicate the common beam of at least two channels or reference signals. Send feedback information of the first signaling, wherein the feedback information of the first signaling includes a target reference signal; The first signaling includes first downlink control information (DCI); The first DCI is also used to trigger an aperiodic probe reference signal (SRS); the target reference signal is the SRS; or The first DCI did not trigger an aperiodic SRS; the target reference signal is the SRS at the most recent time after the third preset time after the reception time of the first DCI.

2. The method according to claim 1, characterized in that, The feedback information of the first signaling also includes one of the following: feedback information of the first target channel, and the second target channel.

3. The method according to claim 1, characterized in that, Before the terminal receives the first signaling, the method further includes: Receive the first Media Access Control Unit (MAC CE) signaling, which is used to activate the N1 group TCI state; Wherein, the first DCI is used to indicate a set of TCI states from the N1 sets of TCI states, where N1 is a positive integer.

4. The method according to claim 3, characterized in that, Each TCI state satisfies at least one of the following: Each TCI state group includes a shared TCI state for both downlink and uplink; Each TCI state group includes the downlink TCI state and / or the uplink TCI state. Each TCI state includes the shared TCI state for the downlink and uplink corresponding to each TRP identifier; Each TCI state group includes the downlink TCI state and / or uplink TCI state corresponding to each TRP identifier. Each TCI state group includes a shared TCI state for both downlink and uplink corresponding to a TRP identifier; Each TCI state group includes the downlink TCI state and / or uplink TCI state corresponding to a TRP identifier.

5. The method according to claim 4, characterized in that, Each TCI state corresponds to a code point in the TCI signaling field of the first DCI.

6. The method according to claim 3, characterized in that, The method further includes: receiving configuration information, the configuration information being used to configure at least one of the following: The first signaling is used to indicate the TCI status in a single TRP scenario or to indicate the TCI status in a multi-TRP scenario; The first signaling is used to indicate the TCI status in a single DCI mode or a multi-DCI mode in a multi-TRP scenario; The TCI states used for uplink and downlink are either shared or independent.

7. The method according to claim 1, characterized in that, Before the terminal receives the first signaling, the method further includes: Receive the fourth MAC CE signaling, which is used to activate the TCI state of group N2 for the uplink; Receive the fifth MAC CE command, which is used to activate the TCI state of group N3 for downlink; The first DCI is used to indicate a set of TCI states from N2 sets of TCI states and to indicate a set of TCI states from N3 sets of TCI states, where N2 and N3 are positive integers.

8. The method according to claim 4 or 7, characterized in that, The method further includes: determining whether the target TCI state in each group of TCI states is used for the uplink or the downlink based on at least one of the following, or determining the TRP identifier corresponding to the target TCI state in each group of TCI states: The order or position of the target TCI states; The code point corresponding to the target TCI state is used for the downlink or uplink. The TRP identifier corresponding to the code point of the target TCI state; The target TCI state is selected from the TCI state pool.

9. The method according to claim 2, characterized in that, The first DCI is also used to schedule downlink or uplink channels; Wherein, the first target channel is the downlink channel scheduled by the first DCI, and the second target channel is the uplink channel scheduled by the first DCI.

10. The method according to claim 2, characterized in that, The first DCI did not schedule downlink or uplink channels; Wherein, the first target channel is the nearest downlink channel before the reception time of the first DCI, and the second target channel is the nearest uplink channel before the reception time of the first DCI; or The first target channel is the nearest downlink channel after the reception time of the first DCI, and the second target channel is the nearest uplink channel after the reception time of the first DCI.

11. The method according to claim 2, characterized in that, The first DCI did not schedule downlink or uplink channels; Wherein, the first target channel is the downlink channel at the nearest moment after the reception time of the first DCI and after a first preset time, and the second target channel is the uplink channel at the nearest moment after the reception time of the first DCI and after a first preset time.

12. The method according to any one of claims 9 to 11, characterized in that, The feedback information of the first target channel is based on the feedback information of code block group (CBG). If at least one ACK is present in the feedback information of the multiple CBGs corresponding to the first target channel, then the feedback information of the first DCI is ACK.

13. The method according to any one of claims 9 to 11, characterized in that, The feedback information of the first target channel includes feedback information of the downlink channel; Wherein, the network-side device uses the ACK or NACK of the downlink channel as the ACK of the first DCI; and / or If the network-side device does not receive feedback information from the downlink channel, the network-side device considers the feedback information of the first DCI to be NACK.

14. The method according to any one of claims 9 to 11, characterized in that, The first target channel, its feedback information, or the beam of the second target channel satisfies one of the following: The common beam indicated by the first signaling; The currently used common beam; After a second preset time period following the reception time of the first DCI, the first target channel or the feedback information of the first target channel or the second target channel uses the common beam indicated by the first DCI. When the time interval between the DCI of the first target channel and the first DCI reaches a preset value, the first target channel or the feedback information of the first target channel uses the common beam indicated by the first DCI. When the time interval between the DCI of the second target channel and the first DCI reaches a preset value, the second target channel uses the common beam indicated by the first DCI.

15. The method according to claim 2, characterized in that, The second target channel includes PUSCH, and the network-side device determines the feedback information of the first signaling based on whether the PUSCH is correctly received.

16. The method according to any one of claims 9 to 11, characterized in that, The second target channel includes PUSCH, and the method further includes: Receive the third DCI, and determine whether the network-side device has received the feedback information of the first signaling based on the third DCI.

17. The method according to claim 16, characterized in that, The feedback information for determining whether the network-side device has received the first signaling based on the third DCI includes: If the HARQ process number used by the third DCI to schedule the second PUSCH is the same as the HARQ process number used by the first PUSCH, and the third DCI includes the New Data Indicator (NDI) field value that has not been flipped, then it is determined that the network-side device has received feedback information from the first signaling, and the first PUSCH is the second target channel.

18. The method according to claim 1, characterized in that, The DCI that triggers the target reference signal satisfies at least one of the following: Frequency domain resource allocation FDRA field is set to 0; Cyclic Redundancy Check (CRC) is scrambled using the Cell Radio Network Temporary Identifier (C-RNTI).

19. The method according to claim 1, characterized in that, The SRS is configured to be used for one of the following purposes: Antenna switching, codebook use, non-codebook use, beam management.

20. The method according to claim 19, characterized in that, When PUSCH is configured as a codebook, the purpose of the SRS is as a codebook; and / or When PUSCH is configured as a non-codebook, the SRS is used as a non-codebook.

21. The method according to claim 1, characterized in that, The beam of the SRS satisfies at least one of the following: Beams configured for the SRS; The common beam indicated by the first signaling; The common beam currently used for transmission.

22. The method according to claim 1, characterized in that, The method further includes: After the common beam is activated, the channel or reference signal is transmitted through the common beam.

23. The method according to claim 22, characterized in that, The transmission of channel or reference signals through the common beam after the common beam takes effect includes: After the feedback information of the first signaling is ACK, and after a fourth preset time period following the transmission of the feedback information of the first signaling, at least one of the following transmissions is performed through the common beam: The first signaling, the DCI other than the first signaling, and the uplink channel carrying feedback information of the first signaling.

24. The method according to claim 23, characterized in that, After a fourth preset time interval following the transmission of the feedback information of the first signaling, transmission via the common beam includes at least one of the following: If the feedback information includes multiple ACK / NACKs of the first signaling, then after a fourth preset time period following the transmission of the latest ACK, at least one of the following transmissions will be performed through the common beam: The first signaling, the DCI other than the first signaling, and the uplink channel carrying feedback information of the first signaling.

25. The method according to claim 24, characterized in that, The multiple first signaling signals indicate the same TCI state.

26. The method according to claim 23, characterized in that, The fourth preset duration is predefined or configured by the network-side device, and the value of the fourth preset duration supports at least one of the terminal's beam switching delay, antenna switching delay, and antenna panel switching delay.

27. The method according to claim 22, characterized in that, The uplink channel path loss reference signal PL RS is active simultaneously with the common beam, wherein the PL RS is determined based on at least one of the following: The downlink RS in the TCI state indicated by the first signaling; The downlink RS associated with the RS in the TCI state indicated by the first signaling; If the source RS in the TCI state indicated by the first signaling is an SRS, then the PL RS is the path loss RS updated by MAC CE or the downlink RS associated with the SRS. If the TCI state indicated by the first signaling includes the TCI state of the downlink and the TCI state of the uplink, and the TCI state of the uplink includes the SRS, then the PL RS is the downlink RS or the PL RS updated by MACCE in the TCI state of the downlink.

28. The method according to claim 22, characterized in that, The target reference signal includes SRS, and the transmission of the channel or reference signal through the common beam after the common beam is activated includes at least one of the following: Between the transmission time of the SRS and the fifth preset duration, the current TCI state or the TCI state indicated by the first signaling is used for the transmission of the channel or reference signal. After a fifth preset time following the transmission time of the SRS, the channel or reference signal is transmitted using the TCI state indicated by the first signaling.

29. A beam pointing method, characterized in that, The method includes: The network-side device sends a first signaling message, which is used to indicate the TCI status, and the TCI status is used to indicate the common beam of at least two channels or reference signals. Receive feedback information of the first signaling, wherein the feedback information of the first signaling includes a target reference signal; The first signaling includes first downlink control information (DCI); The first DCI is also used to trigger an aperiodic probe reference signal (SRS); the target reference signal is the SRS; or The first DCI did not trigger an aperiodic SRS; the target reference signal is the SRS at the most recent time after the third preset time after the reception time of the first DCI.

30. The method according to claim 29, characterized in that, The feedback information of the first signaling also includes one of the following: feedback information of the first target channel, and the second target channel.

31. The method according to claim 29, characterized in that, Before the network-side device sends the first signaling, the method further includes: Send the first MAC CE signaling, which is used to activate the N1 group TCI state; Wherein, the first DCI is used to indicate a set of TCI states from the N1 sets of TCI states, where N1 is a positive integer.

32. The method according to claim 31, characterized in that, Each TCI state satisfies at least one of the following: Each TCI state group includes a shared TCI state for both downlink and uplink; Each TCI state group includes the downlink TCI state and / or the uplink TCI state. Each TCI state includes the shared TCI state for the downlink and uplink corresponding to each TRP identifier; Each TCI state group includes the downlink TCI state and / or uplink TCI state corresponding to each TRP identifier. Each TCI state group includes a shared TCI state for both downlink and uplink corresponding to a TRP identifier; Each TCI state group includes the downlink TCI state and / or uplink TCI state corresponding to a TRP identifier.

33. The method according to claim 32, characterized in that, Each TCI state corresponds to a code point in the TCI signaling field of the first DCI.

34. The method according to claim 31, characterized in that, The method further includes: sending configuration information, the configuration information being used to configure at least one of the following: The first signaling is used to indicate the TCI status in a single TRP scenario or to indicate the TCI status in a multi-TRP scenario; The first signaling is used to indicate the TCI status in a single DCI mode or a multi-DCI mode in a multi-TRP scenario; The TCI states used for uplink and downlink are either shared or independent.

35. The method according to claim 29, characterized in that, Before the network-side device sends the first signaling, the method further includes: Send a fourth MAC CE signaling message, which is used to activate the TCI state of group N2 for the uplink; Send a fifth MAC CE command, which is used to activate the TCI state of group N3 for downlink; The first DCI is used to indicate a set of TCI states from N2 sets of TCI states and to indicate a set of TCI states from N3 sets of TCI states, where N2 and N3 are positive integers.

36. The method according to claim 32 or 35, characterized in that, The terminal determines whether the target TCI state in each group of TCI states is used for the uplink or the downlink, or determines the TRP identifier corresponding to the target TCI state in each group of TCI states, based on at least one of the following: The order or position of the target TCI states; The code point corresponding to the target TCI state is used for the downlink or uplink. The TRP identifier corresponding to the code point of the target TCI state; The target TCI state is selected from the TCI state pool.

37. The method according to claim 30, characterized in that, The first DCI is also used to schedule downlink or uplink channels; Wherein, the first target channel is the downlink channel scheduled by the first DCI, and the second target channel is the uplink channel scheduled by the first DCI.

38. The method according to claim 30, characterized in that, The first DCI did not schedule downlink or uplink channels; Wherein, the first target channel is the nearest downlink channel before the transmission time of the first DCI, and the second target channel is the nearest uplink channel before the transmission time of the first DCI; or The first target channel is the nearest downlink channel after the transmission time of the first DCI, and the second target channel is the nearest uplink channel after the transmission time of the first DCI.

39. The method according to claim 30, characterized in that, The first DCI did not schedule downlink or uplink channels; Wherein, the first target channel is the downlink channel at the most recent time after the transmission time of the first DCI, and the second target channel is the uplink channel at the most recent time after the transmission time of the first DCI, following the first preset time interval.

40. The method according to any one of claims 37 to 39, characterized in that, The feedback information of the first target channel is based on the feedback information of code block group (CBG). If at least one ACK is present in the feedback information of the multiple CBGs corresponding to the first target channel, then the feedback information of the first DCI is ACK.

41. The method according to any one of claims 37 to 39, characterized in that, The feedback information of the first target channel includes feedback information of the downlink channel, and the method further includes: Use the ACK or NACK of the downlink channel as the ACK of the first DCI; and / or If no feedback information is received from the downlink channel, the feedback information of the first DCI is considered to be NACK.

42. The method according to any one of claims 37 to 39, characterized in that, The first target channel, its feedback information, or the beam of the second target channel satisfies one of the following: The common beam indicated by the first signaling; The currently used common beam; After a second preset time following the transmission time of the first DCI, the first target channel or the feedback information of the first target channel or the second target channel uses the common beam indicated by the first DCI. When the time interval between the DCI of the first target channel and the first DCI reaches a preset value, the first target channel or the feedback information of the first target channel uses the common beam indicated by the first DCI. When the time interval between the DCI of the second target channel and the first DCI reaches a preset value, the second target channel uses the common beam indicated by the first DCI.

43. The method according to claim 30, characterized in that, The second target channel includes PUSCH, and the method further includes: The feedback information for the first signaling is determined based on whether the PUSCH is received correctly.

44. The method according to any one of claims 37 to 39, characterized in that, The second target channel includes PUSCH, and the method further includes: A third DCI is sent, which is used by the terminal to determine whether the network-side device has received feedback information from the first signaling.

45. The method according to claim 44, characterized in that, If the HARQ process number used by the third DCI to schedule the second PUSCH is the same as the HARQ process number used by the first PUSCH, and the third DCI includes a New Data Indicator (NDI) field value that has not been flipped, then the terminal determines that the network-side device has received feedback information from the first signaling, and the first PUSCH is the second target channel.

46. ​​The method according to claim 29, characterized in that, The DCI that triggers the target reference signal satisfies at least one of the following: The FDRA field is set to 0; CRC is scrambled using C-RNTI.

47. The method according to claim 29, characterized in that, The SRS is configured to be used for one of the following purposes: Antenna switching, codebook use, non-codebook use, beam management.

48. The method according to claim 47, characterized in that, When PUSCH is configured as a codebook, the purpose of the SRS is as a codebook; and / or When PUSCH is configured as a non-codebook, the SRS is used as a non-codebook.

49. The method according to claim 29, characterized in that, The beam of the SRS satisfies at least one of the following: Beams configured for the SRS; The common beam indicated by the first signaling; The common beam currently used for transmission.

50. The method according to claim 30, characterized in that, The method also includes one of the following: The feedback information of the first target channel, the second target channel, and any one of the target reference signal are used as the feedback information of the first signaling. The feedback information of the first target channel, the second target channel, and the target reference signal transmitted first shall be used as the feedback information of the first signaling; The feedback information of the first target channel, the feedback information of the second target channel, and the target reference signal that is transmitted first after a sixth preset time after the first signaling transmission time shall be used as the feedback information of the first signaling. The feedback information of the first target channel is preferentially used as the feedback information of the first signaling; The second target channel is preferentially used as feedback information for the first signaling; The target reference signal is preferentially used as feedback information for the first signaling.

51. The method according to claim 29, characterized in that, The method further includes: After the common beam is activated, the channel or reference signal is transmitted through the common beam.

52. The method according to claim 51, characterized in that, The transmission of channel or reference signals through the common beam after the common beam takes effect includes: After the feedback information of the first signaling is ACK, and after a fourth preset time period following the receipt of the feedback information of the first signaling, at least one of the following transmissions is performed through the common beam: The first signaling, the DCI other than the first signaling, and the uplink channel carrying feedback information of the first signaling.

53. The method according to claim 52, characterized in that, After a fourth preset time interval following the receipt of the feedback information of the first signaling, transmission via the common beam shall include at least one of the following: If the feedback information includes multiple ACK / NACKs of the first signaling, then after a fourth preset time interval following the receipt of the latest ACK, at least one of the following transmissions will be performed through the common beam: The first signaling, the DCI other than the first signaling, and the uplink channel carrying feedback information of the first signaling.

54. The method according to claim 53, characterized in that, The multiple first signaling signals indicate the same TCI state.

55. The method according to claim 53, characterized in that, The fourth preset duration is predefined or configured by the network-side device, and the value of the fourth preset duration supports at least one of the terminal's beam switching delay, antenna switching delay, and antenna panel switching delay.

56. The method according to claim 51, characterized in that, The uplink channel path loss reference signal PL RS is active simultaneously with the common beam, wherein the PL RS is determined based on at least one of the following: The downlink RS in the TCI state indicated by the first signaling; The downlink RS associated with the RS in the TCI state indicated by the first signaling; If the source RS in the TCI state indicated by the first signaling is an SRS, then the PL RS is the path loss RS updated by MAC CE or the downlink RS associated with the SRS. If the TCI state indicated by the first signaling includes the TCI state of the downlink and the TCI state of the uplink, and the TCI state of the uplink includes the SRS, then the PL RS is the downlink RS or the PL RS updated by MACCE in the TCI state of the downlink.

57. The method according to claim 51, characterized in that, The target reference signal includes SRS, and the transmission of the channel or reference signal through the common beam after the common beam is activated includes at least one of the following: Between the SRS reception time and the fifth preset duration, the current TCI state or the TCI state indicated by the first signaling is used for the transmission of the channel or reference signal. After a fifth preset time following the SRS reception time, the channel or reference signal is transmitted using the TCI state indicated by the first signaling.

58. A beam pointing device, characterized in that, include: A receiving module is configured to receive a first signaling, the first signaling being used to indicate a TCI state, the TCI state being used to indicate a common beam of at least two channels or reference signals; The sending module is used to send feedback information of the first signaling, wherein the feedback information of the first signaling includes a target reference signal; The first signaling includes first downlink control information (DCI); The first DCI is also used to trigger an aperiodic probe reference signal (SRS); the target reference signal is the SRS; or The first DCI did not trigger an aperiodic SRS; the target reference signal is the SRS at the most recent time after the third preset time after the reception time of the first DCI.

59. A beam pointing device, characterized in that, include: A transmitting module is used to transmit a first signaling, the first signaling being used to indicate a TCI state, the TCI state being used to indicate a common beam of at least two channels or reference signals; A receiving module is configured to receive feedback information of the first signaling, wherein the feedback information of the first signaling includes a target reference signal; The first signaling includes first downlink control information (DCI); The first DCI is also used to trigger an aperiodic probe reference signal (SRS); the target reference signal is the SRS; or The first DCI did not trigger an aperiodic SRS; the target reference signal is the SRS at the most recent time after the third preset time after the reception time of the first DCI.

60. A terminal, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the beam indication method as described in any one of claims 1 to 28.

61. A network-side device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the beam indication method as described in any one of claims 29 to 57.

62. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the beam pointing method as described in any one of claims 1 to 28, or implement the beam pointing method as described in any one of claims 29 to 57.

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