Communication method and related apparatus

Abstract

The present application provides a communication method and a related apparatus, which are applied to the technical field of communications. The communication method executed by a terminal comprises: receiving at least one reference signal from a network device; and sending activation information to the network device. The activation information is used for indicating an activation state of the at least one reference signal, or the activation information is used for indicating an activation state of a transmission configuration indication state (TCI state) corresponding to the at least one reference signal. According to the method and apparatus of the present application, the terminal directly indicates at least one reported reference signal or at least one TCI state as an activated new beam, so that a delay caused by sending MAC-CE signaling to activate the at least one reference signal or the at least one TCI state can be reduced, thereby reducing signaling overhead and ensuring the reliability of communication.

Description

Communication method and related device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on March 26, 2024, with application number 202410368035.4 and application name “Communication Methods and Related Devices”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to communication methods and related devices. Background Art

[0003] The current fifth-generation mobile communication system (5G) uses high-frequency communication to ensure communication reliability, namely, using ultra-high frequency bands (such as 28GHz) to transmit data. However, this high-frequency communication method has a major problem: the signal energy decreases sharply with increasing transmission distance, resulting in a short signal transmission distance. To overcome this problem, simulated beam technology can be used. Specifically, by weighting the antenna array, the signal energy is concentrated within a smaller angle range, forming a signal similar to a light beam (called a simulated beam, or simply beam), thereby increasing the transmission distance. In this method, both network equipment and terminals use specific beams for uplink and downlink data transmission.

[0004] Under the existing beam management process, if the optimal beam reported by the terminal is not activated by the network device, the network device must send MAC-CE signaling to activate it before providing beam indication. Because MAC-CE signaling takes at least 3ms to take effect, there is a significant delay before the new beam takes effect.

[0005] Therefore, how to solve the problem of long delay in the effectiveness of new beams is a hot topic being studied by those skilled in the art. Summary of the Invention

[0006] The embodiments of the present application provide a communication method and related devices, which can effectively reduce the delay caused by triggering the activation of a new beam, reduce signaling overhead, and ensure the reliability of communication.

[0007] In a first aspect, an embodiment of the present application provides a communication method, the method comprising: receiving at least one reference signal from a network device; and sending activation information to the network device, wherein the activation information indicates an activation state of the at least one reference signal, or indicates an activation state of a transmission configuration indication state (TCI) corresponding to the at least one reference signal.

[0008] Under the existing beam management process, if the optimal beam reported by the terminal is not activated by the network device, the network device must send MAC-CE signaling to activate it before providing beam indication. Because MAC-CE signaling takes at least 3ms to take effect, the delay in the new beam taking effect is significant. In this application, the terminal directly indicates that at least one reported reference signal or at least one TCI state is used as a new beam. This can reduce the delay caused by sending MAC-CE signaling to activate at least one reference signal or at least one TCI state, reduce signaling overhead, and ensure communication reliability.

[0009] In a possible implementation of the first aspect, the activation state is used to indicate whether the at least one reference signal has completed time-frequency tracking, or to indicate whether the TCI state corresponding to the at least one quasi-coordinated type QCL type D reference signal can directly perform TCI state indication, or to indicate whether the at least one reference signal is activated, or to indicate whether the TCI state corresponding to the at least one reference signal of QCL Type D can perform data transmission, or to indicate whether the terminal stores the QCL attributes of the synchronization signal block SSB associated with the at least one reference signal, or to indicate whether additional SSB reception is required when the at least one reference signal is used for beam indication, or to indicate whether the at least one reference signal has completed synchronization.

[0010] In another possible implementation of the first aspect, the method further includes: sending a measurement result of the at least one reference signal to the network device, wherein the measurement result includes one or more of an index of the at least one reference signal, a signal quality corresponding to the at least one reference signal, and capability index information corresponding to the at least one reference signal.

[0011] In yet another possible implementation of the first aspect, the activation information is indicated by a first field.

[0012] In the above embodiment, a solution is provided for indicating whether the activation state of at least one reference signal or at least one TCI state is activated through the overall activation information.

[0013] In another possible implementation of the first aspect, the activation information is indicated by at least one second field, the at least one second field is associated with the at least one reference signal, and each second field is used to indicate the activation status of a reference signal, or the at least one second field is associated with at least one TCI state, and each second field is used to indicate the activation status of a TCI state.

[0014] In the above embodiment, a solution is provided for indicating whether the activation state of at least one reference signal or at least one TCI state is activated through at least one activation information.

[0015] In another possible implementation of the first aspect, the activation information is used to indicate the index of the at least one reference signal, and the at least one reference signal has been activated, or the activation information is used to indicate the index of the at least one TCI state, and the at least one TCI state has been activated.

[0016] In the above embodiment, a solution is provided for indicating that the activation state of at least one reference signal or at least one TCI state is activated through at least one activation information.

[0017] Optionally, at least one reference signal or at least one TCI state is reported through pre-configured MAC-CE signaling.

[0018] In another possible implementation of the first aspect, the method further includes: when one or more of the following preset conditions are met, the activation state of at least one reference signal takes effect, or the activation state of at least one TCI state takes effect, the preset conditions including a first time period after the terminal reports the activation information and a second time period after the terminal receives feedback information from the network device, the feedback information being information sent by the network device in response to the activation information.

[0019] In another possible implementation of the first aspect, the method further includes: receiving first downlink control information from the network device, wherein the first downlink control information includes a third field, and the third field is used to indicate one of at least one reference signal or at least one TCI state activated corresponding to the TCI field.

[0020] In the above embodiment, when the terminal reports and triggers the activation of the TCI state or reference signal, and in the prior art the network device can also activate the TCI state by sending MAC-CE signaling, then when the downlink control information DCI signaling indicates the TCI state, it is one of the TCI states or reference signals activated by the terminal report or one of the TCI states activated by the network device by sending MAC-CE signaling. There are multiple possible situations, and this solution provides one of the possible situations: a field is introduced in the DCI signaling to indicate whether the "Transmission configuration indication" field in the DCI indicates the TCI state activated by sending MAC-CE signaling, or the TCI state or reference signal triggered by the terminal report.

[0021] In another possible implementation of the first aspect, the method further includes: receiving first downlink control information from the network device, wherein the first downlink control information includes a fourth field, and the fourth field is used to indicate one of at least one activated reference signal or at least one TCI state.

[0022] In the above embodiment, when the terminal reports and triggers the activation of the TCI state or reference signal, and in the prior art the network device can also activate the TCI state by sending MAC-CE signaling, then when the downlink control information DCI signaling indicates the TCI state, it is one of the TCI states or reference signals activated by the terminal report or one of the at least one TCI states activated by the network device by sending MAC-CE signaling. There are multiple possible situations, and this solution provides one of the possible situations: a field is introduced in the DCI signaling to indicate that the terminal reports at least one reference signal or one of the at least one TCI states activated.

[0023] Optionally, the third field and the fourth field cannot be valid at the same time.

[0024] In another possible implementation of the first aspect, the method further includes: performing uplink transmission or downlink transmission of data according to the TCI state or reference signal indicated by the first downlink control information.

[0025] In another possible implementation of the first aspect, the method further includes: determining a path loss reference signal for uplink transmission, wherein the path loss reference signal is one or more of the following: a reference signal indicated by the first downlink control information, and a path loss reference signal for which the reference signal indicated by the first downlink control information satisfies a QCL type D relationship.

[0026] In another possible implementation of the first aspect, the method further includes: determining the transmit power of the uplink transmission based on a reference power control parameter, wherein the reference power control parameter includes one or more of the power control parameters pre-configured by the network device, the basic power p0 configured by the network device, the path loss adjustment factor alpha, the physical uplink shared channel PUSCH, the sounding reference signal SRS, the minimum or maximum power control parameter of the physical uplink control channel PUCCH index, and the power control parameter associated with the TCI state associated with the uplink transmission.

[0027] In a second aspect, embodiments of the present application provide a communication method, comprising: receiving at least one reference signal from a network device, wherein the at least one reference signal is activated when one or more preset conditions are met, and transmitting a measurement result of the at least one reference signal to the network device.

[0028] In the above embodiment, the preset condition for activating the reference signal is set by defining a protocol rule.

[0029] Optionally, the one or more reference signals are used for uplink transmission or downlink transmission of data.

[0030] In a possible implementation of the second aspect, the preset condition includes: the reference signal received power RSRP / signal to interference plus noise ratio SINR of the reference signal is greater than the RSRP / SINR of the current beam, the RSRP / SINR of the reference signal is greater than a bias parameter of the RSRP / SINR of the current beam, the RSRP / SINR of the reference signal is greater than a first threshold, the RSRP / SINR of the reference signal is greater than the RSRP / SINR of the reference signal corresponding to QCL type D of any currently activated TCI state, the RSRP / SINR of the reference signal is greater than a bias parameter of the RSRP / SINR of the reference signal corresponding to QCL type D of any currently activated TCI state, the RSRP / SINR of the reference signal is greater than the RSRP / SINR of the reference signal (RS) corresponding to QCL type D of all currently activated TCI states, the RSRP / SINR of the reference signal is greater than a bias parameter of the maximum RSRP / SINR of the RS corresponding to QCL type D of the currently activated TCI state, and sending the measurement result of the at least one reference signal is initiated by the terminal or triggered by an event.

[0031] In a third aspect, an embodiment of the present application provides a communication method, the method comprising: sending at least one reference signal to a terminal, and receiving activation information from the terminal, wherein the activation information is used to indicate an activation state of the at least one reference signal, or the activation information is used to indicate an activation state of at least one transmission configuration indication state (TCI) state.

[0032] In a possible implementation of the third aspect, the activation state is used to indicate whether the at least one reference signal completes time-frequency tracking, or is used to indicate whether the TCI state corresponding to the at least one quasi-coordinated type QCL type D reference signal can directly perform TCI state indication, or is used to indicate whether the at least one reference signal is activated, or is used to indicate whether the TCI state corresponding to the at least one reference signal of QCL Type D can perform data transmission, or is used to indicate whether the terminal stores the QCL properties of the SSB associated with the at least one reference signal, or is used to indicate whether additional SSB reception is required when the at least one reference signal is used for beam indication, or is used to indicate whether the at least one reference signal completes synchronization.

[0033] In another possible implementation of the third aspect, the method further includes: receiving a measurement result of the at least one reference signal from the terminal, wherein the measurement result includes one or more of an index of the at least one reference signal, a signal quality corresponding to the at least one reference signal, and capability index information corresponding to the at least one reference signal.

[0034] In yet another possible implementation of the third aspect, the activation information is indicated by a first field.

[0035] In another possible implementation of the third aspect, the activation information is indicated by at least one second field, the at least one second field is associated with the at least one reference signal, and each second field is used to indicate the activation status of a reference signal, or the at least one second field is associated with at least one TCI state, and each second field is used to indicate the activation status of a TCI state.

[0036] In another possible implementation of the third aspect, the activation information is used to indicate the index of the at least one reference signal, and the at least one reference signal has been activated, or the activation information is used to indicate the index of the at least one TCI state, and the at least one TCI state has been activated.

[0037] In yet another possible implementation of the third aspect, the method further includes: sending feedback information to the terminal, wherein the feedback information is information sent by the network device in response to the activation information.

[0038] In another possible implementation of the third aspect, the method further includes: sending first downlink control information to the terminal, wherein the first downlink control information includes a third field, and the third field is used to indicate one of at least one reference signal or at least one TCI state activated corresponding to the TCI field.

[0039] In another possible implementation of the third aspect, the method further includes: sending first downlink control information to the terminal, wherein the first downlink control information includes a fourth field, and the fourth field is used to indicate one of at least one activated reference signal or at least one TCI state.

[0040] In a fourth aspect, embodiments of the present application provide a communication method, comprising: transmitting at least one reference signal to a terminal, wherein the at least one reference signal is activated when one or more preset conditions are met; and receiving a measurement result of the at least one reference signal from the terminal.

[0041] Optionally, the one or more reference signals are used for uplink transmission or downlink transmission of data.

[0042] In a possible implementation of the fourth aspect, the preset condition includes: the reference signal received power RSRP / signal to interference plus noise ratio SINR of the reference signal is greater than the RSRP / SINR of the current beam, the RSRP / SINR of the reference signal is greater than a bias parameter of the RSRP / SINR of the current beam, the RSRP / SINR of the reference signal is greater than a first threshold, the RSRP / SINR of the reference signal is greater than the RSRP / SINR of the reference signal corresponding to QCL type D of any currently activated TCI state, the RSRP / SINR of the reference signal is greater than a bias parameter of the RSRP / SINR of the reference signal corresponding to QCL type D of any currently activated TCI state, the RSRP / SINR of the reference signal is greater than the RSRP / SINR of the RS corresponding to QCL type D of all currently activated TCI states, the RSRP / SINR of the reference signal is greater than a bias parameter of the maximum RSRP / SINR of the RS corresponding to QCL type D of the currently activated TCI state, and the sending of the measurement result of the at least one reference signal is initiated by the terminal or triggered by an event.

[0043] In a fifth aspect, an embodiment of the present application provides a communication device, which includes a module or unit for implementing the method described in any possible implementation of the first aspect to the second aspect.

[0044] In a sixth aspect, an embodiment of the present application provides a communication device, which includes a module or unit for implementing the method described in any possible implementation manner of the third to fourth aspects.

[0045] In the seventh aspect, an embodiment of the present application provides a communication device, which includes at least one processor and a communication interface; the communication interface is used to input and / or output information, and at least one processor is used to call a computer program stored in at least one memory to implement the method described in any one of the first to second aspects above.

[0046] In an eighth aspect, an embodiment of the present application provides a communication device, comprising at least one processor and a communication interface; the communication interface is used to input and / or output information, and at least one processor is used to call a computer program stored in at least one memory to implement the method described in any one of the third to fourth aspects above.

[0047] In a ninth aspect, an embodiment of the present application provides a communication system, comprising a terminal and a network device, wherein the terminal and the network device are communicatively connected. The terminal is configured to implement any method of the first aspect, or any method of the second aspect. The network device is configured to implement any method of the third aspect, or any method of the fourth aspect.

[0048] In a tenth aspect, an embodiment of the present application provides a computer-readable storage medium, which is used to store instructions or computer programs; when the instructions or computer programs are executed, the methods of any one of the first to fourth aspects are implemented.

[0049] In an eleventh aspect, the present application provides a computer program product, comprising computer instructions that, when executed on at least one processor, can implement the method described in any of the first through fourth aspects or any possible implementation thereof. The computer program product can be a software installation package, and when the method is to be used, the computer program product can be downloaded and executed on a computing device.

[0050] The beneficial effects of the technical solutions provided in aspects 3 to 11 of this application can refer to the beneficial effects of the technical solutions in aspects 1 to 2, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] FIG1 is a schematic structural diagram of a MAC-CE for activating TCI provided in an embodiment of the present application;

[0052] FIG2 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0053] FIG3a is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application;

[0054] FIG3 b is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application;

[0055] FIG4 is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application;

[0056] FIG5 is a schematic diagram of an O-RAN system provided in an embodiment of the present application;

[0057] FIG6 is a diagram showing the functional division of network elements and the protocol layer structure of an O-RAN system provided in an embodiment of the present application;

[0058] FIG7 is a schematic diagram of TCI state activation signaling in the prior art provided by an embodiment of the present application;

[0059] FIG8 is a schematic diagram of an existing beam management process provided in an embodiment of the present application;

[0060] FIG9 is a flow chart of a communication method provided in an embodiment of the present application;

[0061] FIG10 is a schematic diagram of a TCI field corresponding to a TCI state provided in an embodiment of the present application;

[0062] FIG11 is a flow chart of another communication method provided in an embodiment of the present application;

[0063] FIG12 is a schematic structural diagram of a communication device 120 provided in an embodiment of the present application;

[0064] FIG13 is a schematic structural diagram of another communication device 130 provided in an embodiment of the present application;

[0065] FIG14 is a schematic structural diagram of another communication device 140 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0066] In this application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit differences. "And / or" describes the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0067] It should be understood that, in this application, "at least one" refers to one or more, and "a plurality" refers to two or more. Furthermore, in this application, "equal to" can be used in conjunction with "greater than" or "less than." When "equal to" and "greater than" are used together, the technical solution of "greater than" is adopted; when "equal to" and "less than" are used together, the technical solution of "less than" is adopted.

[0068] The following first explains the relevant names or terms involved in this application to facilitate understanding by those skilled in the art.

[0069] 1. Beam

[0070] The embodiment of the beam in the new radio (NR) protocol can be a spatial domain filter, or a spatial filter, or a spatial domain parameter, a spatial parameter, a spatial domain setting, a spatial setting, or quasi-co-location (QCL) information, QCL assumption, QCL indication, etc. The beam can be indicated by a transmission configuration indication state (TCI-state) parameter or by a spatial relation parameter. Therefore, in this application, the beam can be replaced by a spatial filter, a spatial filter, a spatial parameter, a spatial parameter, a spatial setting, a spatial setting, QCL information, QCL assumption, QCL indication, TCI-state (including downlink TCI-state (Downlink TCI-state, DL TCI-state), uplink TCI-state (uplink TCI-state, UL TCI-state)), spatial relationship, etc. The above terms are also equivalent to each other. Beam can also be replaced by other terms representing beam, which is not limited in this application.

[0071] The beam used to transmit a signal may be referred to as a transmission beam (Tx beam), or may be referred to as a spatial domain transmission filter, a spatial transmission filter, a spatial domain transmission parameter, or a spatial transmission parameter, or a spatial domain transmission setting. The downlink transmit beam may be indicated by a TCI-state.

[0072] The beam used to receive signals can be called a reception beam (Rx beam), and can also be called a spatial domain reception filter, a spatial reception filter, a spatial domain reception parameter, or a spatial reception parameter, a spatial domain reception setting, or a spatial reception setting. The uplink transmit beam can be indicated by a spatial relation, an uplink TCI-state, or an SRS resource (indicating the transmit beam using the SRS). Therefore, the uplink beam can also be replaced by an SRS resource.

[0073] The transmit beam may refer to the distribution of signal strength in different directions in space after the signal is transmitted by the antenna, and the receive beam may refer to the distribution of signal strength in different directions in space of the wireless signal received from the antenna.

[0074] Furthermore, the beam can be a wide beam, a narrow beam, or other types of beams. The beam forming technology can be beamforming technology or other technologies. The beamforming technology can specifically be digital beamforming technology, analog beamforming technology, or hybrid digital / analog beamforming technology.

[0075] Beams generally correspond to resources. For example, during beam measurement, network equipment uses different resources to measure different beams. The terminal then provides feedback on the measured resource quality, which allows the network equipment to determine the quality of the corresponding beam. During data transmission, beam information is also indicated by its corresponding resource. For example, the network equipment uses the TCI field in the DCI to indicate the terminal's downlink physical shared channel (PDSCH) beam information.

[0076] Optionally, multiple beams with the same or similar communication characteristics can be considered a single beam. A beam can include one or more antenna ports for transmitting data channels, control channels, and sounding signals. The one or more antenna ports forming a beam can also be considered an antenna port set.

[0077] In the embodiments of the present application, unless otherwise specified, a beam refers to a transmission beam of a network device. In beam measurement, each beam of a network device corresponds to a resource, so the beam corresponding to the resource can be uniquely identified by the resource index.

[0078] 2. Resources

[0079] In protocol rules, the term "beam" is generally not used directly to represent a beam. Instead, other methods are used to implicitly describe beam-related operations. For example, in beam measurement, there is a corresponding relationship between beams and resources (the network device uses a beam to transmit its corresponding resource), and the terminal's measurement of the resource quality is equivalent to measuring the quality of the beam. Resources can be uplink signal resources or downlink signal resources. Uplink signals include but are not limited to sounding reference signals (SRS) and demodulation reference signals (DMRS). Downlink signals include but are not limited to channel state information reference signals (CSI-RS), cell-specific reference signals (CS-RS), user equipment-specific reference signals (US-RS), demodulation reference signals (DMRS), and synchronization signals / physical broadcast channel blocks (SS / PBCH blocks). The SS / PBCH block can be simply referred to as a synchronization signal block (SSB).

[0080] In addition, the above-mentioned reference signal can be understood as a reference signal associated with the handover candidate cell configuration. The handover candidate cell can also be called a candidate cell or a neighboring cell. The handover candidate cell can be the current serving cell or the non-serving cell. The physical cell identifier (PCI) of the handover candidate cell is different from the current primary cell (PCell). In addition, the reference signal can also be a reference signal associated with an additional PCI (additional PCI), that is, a reference signal of a neighboring cell. The terminal can be configured with one or more candidate cell configurations, and the configuration of each candidate cell can include the configuration of a reference signal resource.

[0081] 3.TCI-state (R17 is used to indicate the downlink beam)

[0082] Network equipment can generate different beams pointing to different transmission directions. In downlink data transmission, when the network device uses a specific beam to send data to the terminal, it needs to inform the terminal of the transmission beam information it uses, so that the terminal can use the receiving beam corresponding to the transmitting beam to receive the data sent by the network device. In the 3GPP R15 / R16 protocol, the network device uses the transmission configuration indicator (TCI) field in the downlink control information (DCI) to indicate to the terminal the relevant information of the transmitting beam it uses. Specifically, the TCI field size is 3 bits and can specifically represent 8 different field values ​​(codepoints). Each value of the TCI field corresponds to an index of a TCI-state, and the TCI-state index can uniquely identify a TCI-state. The TCI-state includes several parameters, and the relevant information of the transmitting beam can be determined by these parameters. The TCI-state is configured to each terminal by the network device. The structure of the TCI-state is shown in the code example.

[0083] Among them, each TCI-state includes its own index tci-StateId and two QCL-Info. Each QCL-Info includes a cell field and bwp-Id, which respectively indicate which cell and bwp (bandwidth part) the TCI-state applies to, that is, different cells or different bwp of the same cell can be configured with different QCL-Info. QCL-Info also includes a referenceSignal (reference signal) to indicate which reference signal resource forms the QCL relationship. In the R15 / R16 protocol, the word "beam" generally does not appear directly, and beam is generally replaced by other terms. For example, in data transmission and channel measurement, beams correspond to reference signal resources, and one beam corresponds to one reference signal resource. Therefore, when we say here which reference signal resource forms the QCL relationship, we actually mean which beam forms the QCL relationship. The QCL relationship refers to two reference signal resources (or two antenna ports, where antenna ports and reference signal resources also correspond one to one) having certain identical spatial parameters. The specific spatial parameters that are identical depend on the type of QCL-Info, i.e., another field in QCL-Info, qcl-Type. qcl-Type can have four values: {typeA, typeB, typeC, typeD}. Taking typeD as an example, typeD indicates that the two reference signal resources have the same spatial receive parameter information, that is, the two beams have the same receive beam. Of the two QCL-Infos included in the TCI-state, at most one can be of TypeD.

[0084] Optionally, the step of the network device indicating the receiving beam information of the data transmission beam to a terminal through TCI-state based on the R15 / R16 protocol includes configuring, activating, and indicating the TCI-state. For ease of understanding, the detailed description of the above steps can be as follows:

[0085] TCI-state configuration: The network device configures multiple TCI-states to the terminal through radio resource control (RRC) signaling. These TCI-states all include a QCL-Info of type D. The network device can also configure TCI-states that do not include QCL-info of type D, but these TCI-states are not used for data transmission beam indication and are not further explained here.

[0086] TCI-state activation: After a network device configures multiple TCI-states, it must activate eight of them through the medium access control element (MAC-CE). These eight TCI states correspond one-to-one to the eight values ​​of the TCI field in the DCI. The eight TCI-states corresponding to the eight values ​​of the DCI's TCI field are determined through MAC-CE signaling. The MAC-CE structure for TCI activation is shown in Figure 1. Fields T0 through T(N-2)x8+7 correspond to the TCI-states indexed 0 through (N-2)x8+7 configured in the first step. Each field is 1 bit and can have a value of 0 or 1. A value of 1 indicates that the TCI-state is activated, while a value of 0 indicates that the TCI-state is deactivated. Each MAC-CE can theoretically have eight activation fields set to 1, with the remaining fields all set to 0. The TCI-states corresponding to these eight fields set to 1 are the same as the eight TCI-states corresponding to the eight values ​​of the TCI field in the DCI. For example, the minimum value of the TCI field, 000, corresponds to the TCI-state with the smallest index activated in the MAC-CE, and so on, one to one. There are many types of MAC-CEs. In addition to MAC-CEs used for TCI-state activation, there are also MAC-CEs for many other purposes. This application only covers MAC-CEs used for TCI-state / TCI-state combination activation. Therefore, unless otherwise specified, the MAC-CEs described in this application refer to this type of MAC-CE.

[0087] TCI-state indication: The network device indicates a specific TCI-state through the TCI field in the DCI. For example, the value of the TCI field in the DCI sent by the network device to the terminal is 000, indicating the TCI-state corresponding to 000 adopted by the data transmission beam. The RS contained in the QCL-Info of type D in the TCI-state is the channel state information-reference signal (CSI-RS) with an index of #1, indicating that the beam used for data transmission is the same as the receiving beam corresponding to the CSI-RS with an index of #1. The receiving beam corresponding to the CSI-RS with an index of #1 can be determined through the beam measurement process and is known to the terminal. Therefore, through the specific value of the TCI field, the terminal can determine the receiving beam corresponding to the data transmission beam, and thus adopt the corresponding receiving beam to receive data.

[0088] 4.Spatial relation (used to indicate uplink beam)

[0089] In the current protocol, the transmit beam for uplink transmission is indicated by a spatial relation, which has a function similar to TCI-state and is used to inform the terminal which transmit beam to use for uplink transmission.

[0090] The spatial relation also needs to be configured through RRC signaling. Its configuration structure is shown in the code example.

[0091] The configuration structure of the spatial relation includes the spatial relation's identity (ID) (alternatively, the ID can also be represented by an identifier or indication or identification or index), a cell ID (alternatively, the cell ID can also be represented by a cell index or serving cell index or physical cell ID), a target reference signal resource, a path loss measurement reference signal, power control parameters, etc. The target reference signal resource (which can be one of SRS / SSB / CSI-RS) is used to indicate the corresponding uplink beam. If the uplink transmission adopts spatial relation #1, and the spatial relation #1 includes a target reference signal resource #2, it means that the transmission beam adopted for the uplink transmission is the transmission / reception beam of the target reference signal. For example, when the target reference signal resource is an uplink resource SRS, it means that the transmission beam adopted for the uplink transmission is the transmission beam of the SRS (the transmission beam of the SRS is known). For another example, the target reference signal resource is a downlink resource such as SSB / CSI-RS, indicating that the transmit beam used for uplink transmission is the receive beam of the SSB / CSI-RS (the receive beam of the SSB / CSI-RS is known).

[0092] Network equipment can configure multiple spatial relations for a terminal. One of these relations is then activated through MAC CE for the corresponding data transmission. Uplink transmissions, including the physical uplink control channel (PUCCH), SRS, and physical uplink shared channel (PUSCH), all require corresponding spatial relations. The spatial relation of the PUCCH is indicated through MAC-CE signaling. The spatial relation of the SRS is also indicated through MAC-CE signaling. When transmitting, the PUSCH is associated with a specific SRS and uses the spatial relation of that SRS for transmission.

[0093] To facilitate understanding of the technical solution of the present application, the present application will be further described below with reference to the accompanying drawings.

[0094] The method provided in the embodiment of the present application can be applied to the communication system shown in Figure 2, which may include a terminal and a network device. It is understandable that Figure 2 only shows one terminal and one network device. In actual use, the architecture of at least one terminal and / or at least one network device may be adopted as needed. For example, the communication system shown in Figure 3a includes a network device and multiple terminals, wherein a single network device can transmit data or send control signaling to a single or multiple terminals. For another example, the communication system shown in Figure 3b includes multiple network devices and a terminal, wherein multiple network devices can simultaneously transmit data or send control signaling to a single terminal.

[0095] In an embodiment of the present application, a network device is a device deployed in a wireless access network to provide wireless communication functions for a terminal. The network device may include various forms of macro base stations, micro base stations (also known as small stations), relay stations, access points, etc. In systems using different wireless access technologies, the names of network devices may be different, such as base transceiver stations (BTS) in global system for mobile communication (GSM) or code division multiple access (CDMA) networks, base stations (NodeB, NB) in wideband code division multiple access (WCDMA), eNB or (evolutional nodeB, eNodeB) in long term evolution (LTE). The network device may also be a wireless controller in a cloud radio access network (CRAN) scenario. The network device may also be a base station device in a future 5G network or a network device in a future evolved public land mobile network (PLMN) network. The network device may also be a wearable device or a vehicle-mounted device. Network devices can also be transmission and reception points (TRPs).

[0096] In the embodiments of the present application, the terminals involved may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem. The terminal may be a mobile station (MS), a subscriber unit (subscriber unit), a cellular phone (cellular phone), a smart phone (smart phone), a wireless data card, a personal digital assistant (PDA), a tablet computer, a wireless modem (modem), a handheld device (handset), a laptop computer (laptop computer), a machine type communication (MTC) terminal, etc.

[0097] Alternatively, the communication between each network device and each terminal in the communication system shown in Figures 3a and 3b can be represented in another form. As shown in Figure 4, the communication system includes a terminal 410 and a network device 420. Terminal 410 includes a first processor 411, a first memory 412, and a first transceiver 413. The first transceiver 413 includes a first transmitter 4131, a first receiver 4132, and a first antenna 4133. Network device 420 includes a second processor 421, a second memory 422, and a second transceiver 423. The second transceiver 423 includes a second transmitter 4231, a second receiver 4232, and a second antenna 4233. The second receiver 4232 can be configured to receive transmission control information via the first antenna 4133, and the first transmitter 4131 can be configured to send feedback information to the network device 420 via the first antenna 4133. The second transmitter 4231 may be configured to send control information to the terminal 410 via the second antenna 4233 , and the second receiver 4232 may be configured to receive feedback information sent by the terminal 410 via the second antenna 4233 .

[0098] Optionally, the method provided in the embodiment of the present application can also be applied to the O-RAN system. Please refer to Figure 5, which is a schematic diagram of an O-RAN system provided in the embodiment of the present application. The O-RAN system may also include other components in addition to the components shown in Figure 5, and this application does not limit this. Optionally, the network device shown in Figure 5 can be an access network device, for example, an eNB or gNB or a next-generation access network device. The access network device communicates with the core network (CN) through a backhaul link and communicates with the terminal through an air interface. The baseband unit (BBU) in the access network device communicates with the core network through a backhaul link, and the radio unit (RU) in the access network device communicates with at least one terminal through an air interface. The BBU communicates with at least one RU through a fronthaul link, and the BBU and RU may be co-located or not co-located. The BBU includes at least one control unit (CU) and at least one distributed unit (DU), which can communicate through at least one midhaul link.

[0099] Further, optionally, please refer to Figure 6, which is a diagram of the network element function division and protocol layer structure of an O-RAN system provided in an embodiment of the present application. As shown in Figure 6, in some examples, the CU is a logical node that carries the RRC layer, service data adaptation protocol (SDAP) layer, packet data convergence protocol (PDCP) layer, and other control functions of the access network equipment. The CU is connected to network nodes such as the core network through some interfaces, which may be interfaces such as E2 interfaces. Optionally, the CU may have some functions of the core network, such as the PDCP layer and higher layers. The CU is connected to the DU (such as the RLC layer and lower layers) through some interfaces, which may be interfaces such as F1 interfaces. In some examples, these interfaces (such as F1 interfaces) can provide control plane (C-Plane) and user plane (U-Plane) functions (such as interface management, system information management, UE context management, RRC message transmission, etc.). F1AP is the application protocol of the F1 interface, and in some examples, it defines the signaling process of F1. The F1 interface supports the control plane F1-C and the user plane F1-U.

[0100] In some examples, the CU can be split into the CU-CP (control unit-control plane) and the CU-UP (control unit-user plane). The CU-CP is a logical node that carries the RRC layer and the PDCP-C (control plane part of PDCP) layer and is used to implement the control plane functions of the CU. The CU-CP can interact with network elements in the core network that implement control plane functions. The network elements in the core network that implement control plane functions can be access and mobility function network elements, such as the access and mobility management function (AMF) in the 5G system. The AMF network element is responsible for mobility management in the mobile network, such as terminal location update, terminal registration network, terminal handover, etc. The CU-UP is a logical node that carries the SDAP layer and the PDCP-U (user plane part of PDCP) layer and is used to implement the user plane functions of the CU. The CU-UP can interact with network elements in the core network that implement user plane functions. The network elements in the core network that implement user plane functions, such as the user plane function (UPF) in the 5G system, are responsible for forwarding and receiving data in the terminal. It should be understood that the above configuration of CU and DU is only an example, and the functions of CU and DU can also be configured as needed, and this application does not impose too many restrictions on this. For example, the CU or DU can be configured to have the functions of more protocol layers, or the CU or DU can be configured to have partial processing functions of the protocol layer. For another example, some functions of the RLC layer and the functions of the protocol layers above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are set in the DU. For another example, the functions of the CU or DU can be divided according to the service type or other system requirements, such as by delay, and the functions whose processing time needs to meet the smaller delay requirement are set in the DU, and the functions that do not need to meet the delay requirement are set in the CU.

[0101] In some examples, the DU is a logical node that carries the radio link control (RLC) layer, the medium access control (MAC) layer, the higher physical layer (higher PHY) layer, and other functions. In some examples, the DU can control at least one RU. The DU is connected to the RU through some interfaces, which can be fronthaul interfaces. In some examples, the Higher PHY layer includes parts of the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, and other processing functions.

[0102] In some examples, the RU is a logical node that carries the lower physical layer (lower PHY) and radio frequency (RF) processing. In some examples, the RU can be a 3GPP transmission reception point (TRP) or a remote radio head (RRH) or other entity with similar functions. In some examples, Low-PHY includes parts of the PHY processing, such as fast Fourier transform (FFT), inverse fast Fourier transform (IFFT), digital beamforming and filtering, and other processing functions. The RU communicates with one or more UEs over a wireless link.

[0103] Optionally, the DU and RU may or may not be co-located. The DU and RU exchange control plane information and user plane information via the lower-layer split - control, user and synchronization (lower-layer split CUS-plane, LLS-CUS) interface over the fronthaul link. The LLS-CUS may include an LLS-C interface and an LLS-U interface that provide a control plane (C-Plane) and a user plane (U-Plane), respectively. In some examples, the control plane (C-Plane) refers to real-time control between the DU and the RU. The DU and the RU exchange management information via the LLS-M interface of the fronthaul link, and the management plane (M-Plane) refers to non-real-time management operations between the DU and the RU.

[0104] Optionally, the DU and RU can work together to implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of the DU and RU can be configured in a variety of ways according to the design. For example, the DU is configured to implement the baseband function, and the RU is configured to implement the mid-RF function. For another example, the DU is configured to implement the high-layer functions in the PHY layer, and the RU is configured to implement the low-layer functions in the PHY layer or to implement the low-layer functions and the RF functions. The high-layer functions in the physical layer may include a part of the functions of the physical layer, which is closer to the MAC layer, and the low-layer functions in the physical layer may include another part of the functions of the physical layer, which is closer to the mid-RF side.

[0105] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in an open radio access network (O-RAN) system, CU may also be referred to as O-CU (open CU), DU may also be referred to as O-DU, CU-CP may also be referred to as O-CU-CP, CU-UP may also be referred to as O-CU-UP, and RU may also be referred to as O-RU. For the sake of convenience of description, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. The deployment methods of the network devices listed here are only examples. With the evolution of standard technologies, network devices may have other deployment forms.

[0106] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field will know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions and network architecture provided in the embodiments of the present application are also applicable to similar technical problems.

[0107] Unified TCI was introduced in R17. Unified TCI is a unified beam indication framework. The network device can indicate a beam to the terminal, and the beam is used for multiple channels and / or reference signals at the same time. The common beam can be an uplink common beam, a downlink common beam, or an uplink and downlink common beam. The terminal can use the common beam in subsequent transmission processes. Exemplarily, the network device can indicate an uplink common beam to the terminal for the transmission of multiple uplink channels and / or uplink reference signals. Or indicate a downlink common beam to the terminal for the transmission of multiple downlink channels and / or downlink reference signals. Or indicate an uplink and downlink common beam to the terminal for the transmission of multiple uplink channels and / or uplink reference signals, as well as multiple downlink channels and / or downlink reference signals. In other words, the uplink and downlink common beams can be used for both uplink and downlink transmissions.

[0108] In R17, the terminal can configure two TCI states: DL or joint TCI and UL TCI. The terminal can configure joint / DL TCI state (up to 128) and UL TCI state (up to 64) at the same time. In the serving cell config of the RRC signaling, the network device can configure the TCI mode currently used by the terminal to be joint mode or separate mode. In Joint mode, the network device only needs to indicate one joint TCI state to be used for both uplink and downlink transmission. In separate mode, the network device needs to indicate DL TCI state and UL TCI state for uplink and downlink transmission respectively. When the terminal receives the activation signaling indicated by MAC-CE from the network device, the activation signaling includes the identification ID of the TCI state. The terminal determines which TCI state to activate according to the RRC configuration.

[0109] Please refer to Figure 7, which is a schematic diagram of TCI state activation signaling in the prior art provided by an embodiment of the present application. Exemplarily, if the RRC configuration terminal is in joint mode, the TCI state ID is the joint TCI state ID. If the RRC configuration terminal is in separate mode, the terminal determines whether the TCI state ID is the DL TCI state ID or the UL TCI state ID based on the value of the D / L field. Exemplarily, when the value is 0, the TCI state ID is the UL TCI state ID; when the value is 1, the TCI state ID is the DL TCI state ID.

[0110] After the terminal receives the activation signaling indicated by the MAC-CE from the network device, the terminal will further receive DCI signaling. The signaling contains a TCI field "transmission configuration indication" used to indicate one or two specific TCI states for uplink or downlink or uplink and downlink data transmission. The value of the TCI field corresponds one-to-one to the TCI state activated by the MAC CE. If the network device configures the terminal to work in joint mode, the TCI field in the DCI signaling indicates a joint TCI state in the MAC-CE, and the joint TCI state is used for uplink and downlink transmission; when the network device configures the terminal to work in separate mode, the TCI field in the DCI signaling indicates a pair of UL / DL TCI states in the MAC-CE for uplink and downlink transmission respectively.

[0111] In the Unified TCI framework, the TCI state is associated with a path loss reference signal pathlossReferenceRS, as shown in the following code example.

[0112] During uplink transmission, the terminal determines the path loss reference signal according to the uplink transmission indication or the configured TCI state, and estimates the path loss value according to the path loss reference signal.

[0113] In addition, TCI state is also associated with an uplink power control parameter UL-power control, as shown in the following code example,

[0114] The uplink power control parameters include AlphaSets for SRS, PUCCH, and PUSCH. Each set includes a reference power, a path loss correction factor, and a closed-loop power control adjustment state index (which can be denoted as p0, alpha, closedLoopindex). The transmit power of PUSCH, PUCCH, SRS, and the physical random access channel (PRACH) transmitted by the terminal is mainly related to the terminal's maximum transmit power, the network device's expected receive power level, path loss, path loss correction factor, closed-loop power control adjustment, power adjustment state, number of transmission resource blocks, subcarrier spacing, etc.

[0115] As shown in Figure 8, under the existing beam management process, if the optimal beam reported by the terminal is not activated by the network device, the network device must send MAC-CE signaling to activate it before providing beam indication. Because MAC-CE signaling takes at least 3ms to take effect, the delay before the new beam takes effect is significant.

[0116] In view of this, an embodiment of the present application provides a communication method and related devices, in which the terminal directly indicates that at least one reference signal or at least one TCI state is reported as a new beam, which can reduce the delay caused by sending MAC-CE signaling to activate at least one reference signal or at least one TCI state, reduce signaling overhead, and ensure communication reliability.

[0117] In the communication method shown below (such as Figure 9), the specific description of the terminal and the network device can be referred to Figures 2, 3a to 3b, 4, and 5, and will not be described in detail here. For ease of description, the embodiments of the present application may be described using terminals and network devices as examples when referring to specific examples, but this should not be understood as a limitation of the embodiments of the present application.

[0118] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0119] Please refer to Figure 9, which is a flow chart of a communication method provided in an embodiment of the present application. Optionally, the method can be applied to a communication system, for example, the communication system shown in Figures 2, 3a to 3b, 4, and 5.

[0120] The communication method shown in Figure 9 may include multiple steps from step S901 to step S902. It should be understood that for the convenience of description, this application describes the sequence of steps S901 to step S902, and is not intended to limit execution to the above sequence. The embodiment of this application does not limit the order of execution, execution time, number of executions, etc. of the above one or more steps. Steps S901 to step S902 are as follows:

[0121] Step S901: A network device sends at least one reference signal to a terminal.

[0122] Accordingly, the terminal receives at least one reference signal from the network device.

[0123] For a detailed explanation of the reference signal, please refer to the aforementioned content and will not be repeated here.

[0124] Step S902: The terminal sends activation information to the network device.

[0125] Accordingly, the network device receives activation information from the terminal.

[0126] Optionally, the terminal obtains activation information after measuring at least one reference signal.

[0127] Further optionally, the terminal sends activation information obtained through measurement to the network device.

[0128] Optionally, the activation information may be sent by the terminal to the network device according to an instruction from the network device, or may be actively reported by the terminal to the network device (ie, without being triggered by an instruction from the network device).

[0129] In an embodiment of the present application, the network device will configure the terminal to report activation information only when the terminal has at least one capability. Optionally, the terminal sends at least one capability information to the network device. Exemplarily, the capability information can be whether the terminal supports reporting activation information in L1 measurement reporting or channel state information (CSI) reporting or beam measurement reporting, and can also be whether the terminal supports timing tracking of reference signals in or associated with an unactivated TCI state, and can also be whether the terminal supports the ability to autonomously activate the TCI state. Therefore, optionally, before the terminal sends activation information to the network device, the network device can first send configuration information to the terminal, and optionally, the terminal has the ability to send activation information. Specifically as follows:

[0130] The configuration information sent by the network device to the terminal includes but is not limited to two results, which are described in detail below.

[0131] Result 1: The configuration information is used to indicate whether the terminal supports triggering the activation of the TCI state.

[0132] For example, the information configured by the network device for the terminal may indicate that after the terminal sends activation information to the network device, the reference signal of QCL type D is directly activated as the TCI state of the reference signal in the activation information.

[0133] For another example, the information configured by the network device for the terminal may indicate: after the terminal sends activation information to the network device, the reference signal of QCL type D is directly activated, which is the TCI state of the reference signal that meets the preset conditions in the activation information. The preset condition may be at least one of the following: the RSRP or SINR reported corresponding to the reference signal is greater than a threshold, the reference signal of QCL type D is the TCI state of the reference signal is not activated, and the reference signal of QCL type D is the TCI state of the reference signal indicated as activated in the activation information. Exemplarily, the threshold may be xdB, and the threshold value may be -70. Optionally, the threshold value may be configured by the network device or specified by the protocol, which is not limited in this application.

[0134] For another example, the information configured by the network device for the terminal may indicate: supporting the terminal to send at least one activated reference signal or TCI state.

[0135] As a possible implementation, whether the network device sends configuration information to the terminal indicates whether the terminal supports sending activation information to the network device. For example, when the network device sends configuration information to the terminal, it indicates that the terminal supports sending activation information to the network device. When the network device does not send configuration information to the terminal, it indicates that the terminal does not support sending activation information to the network device. The above example is also reversed. It should be understood that the above is only one possible scenario for ease of description and does not limit the specific value of the second field in the embodiments of this application.

[0136] As another possible implementation, the configuration information of the network device directly indicates whether the terminal is supported to send activation information to the network device. For example, the configuration information of the network device directly indicates that the terminal is supported to send activation information to the network device, or the configuration information of the network device directly indicates that the terminal is not supported to send activation information to the network device.

[0137] Result 2: The configuration information is used to instruct the terminal to report activation information.

[0138] The activation information is used to indicate the activation state of at least one reference signal, or the activation information is used to indicate the activation state of the TCI state corresponding to at least one reference signal. The activation state is used to indicate whether the at least one reference signal has completed time-frequency tracking, or to indicate whether the TCI state corresponding to at least one quasi-co-located type QCL type D reference signal can directly perform TCI state indication, or to indicate whether the at least one reference signal is activated, or to indicate whether the TCI state corresponding to at least one reference signal of QCL Type D can perform data transmission, or to indicate whether the terminal stores the QCL attributes of the SSB associated with at least one reference signal, or to indicate whether additional SSB reception is required when the at least one reference signal is used for beam indication, or to indicate whether the at least one reference signal has completed synchronization.

[0139] The SSB associated with the reference signal can be understood as: the reference signal and the SSB satisfy a QCL relationship, which can be, for example, any of QCL types A / B / C / D. In other words, the SSB is the source of the QCL resource in the TCI state corresponding to the reference signal. For example, the QCL resource in the TCI state corresponding to the reference signal is a tracking reference signal (TRS) resource, and the QCL resource in the TCI state corresponding to the TRS resource is an SSB resource.

[0140] Among them, the reference signal is used for beam indication, which can be understood as: the QCL type D reference signal in the indicated TCI state is the reference signal.

[0141] Optionally, the terminal may further send a measurement result of at least one reference signal to the network device.

[0142] The measurement results may include at least one of the following:

[0143] (1) An index of at least one reference signal. For example, the index may be a synchronization signal block index (SSB-index) or a CSI-RS resource indicator (CRI).

[0144] (2) Signal quality corresponding to at least one reference signal. For example, the signal quality may be reference signal received power (RSRP) or signal to interference plus noise ratio (SINR).

[0145] (3) Capability index information corresponding to at least one reference signal. For example, the capability index information may be a capability index.

[0146] (4) Cell information, used to indicate the cell for which the at least one TCI state or at least one reference signal is reported. This indicates that the at least one TCI state or at least one reference signal of the cell that is subsequently activated is also that of the cell. The cell information can be the index information of the serving cell, such as the physical cell identifier (PCI), or the PCI of a non-serving cell, which is the additional PCI (additional PCI), or the handover candidate cell index.

[0147] Optionally, the activation information indicates whether at least one reference signal is activated or whether at least one reference signal has been activated, as follows:

[0148] In case one, the activation information indicates whether at least one reference signal is activated. Optionally, the activation information is indicated by the first field. The activation information is used to indicate whether at least one reference signal is directly activated, or whether at least one reference signal completes time-frequency tracking, or whether the TCI state corresponding to at least one quasi-co-located QCL type D reference signal can directly perform TCI state indication (for example, indicating a reference signal in a channel reference report for data transmission), or whether the TCI state corresponding to at least one reference signal of QCL Type D can perform data transmission, or whether the terminal stores the QCL attributes of the SSB associated with at least one reference signal, or whether additional SSB reception is required when at least one reference signal is used for beam indication, or whether at least one reference signal completes synchronization.

[0149] Exemplarily, the first field may be a bit, such as "Activated State" shown in Table 1. CRI may be understood as a reference signal index, such as a CSI-RS index, an SSB index, etc. When the first field is 0, it indicates that at least one reference signal cannot be directly activated, or indicates that at least one reference signal has not completed time-frequency tracking, or indicates that the TCI state corresponding to at least one QCL type D reference signal cannot directly perform TCI state indication, or indicates that the TCI state corresponding to at least one QCL type D reference signal cannot directly perform data transmission. When the first field is 1, it indicates that at least one reference signal can be directly activated, or indicates that at least one reference signal has completed time-frequency tracking, or indicates that the TCI state corresponding to at least one QCL type D reference signal can directly perform TCI state indication, or indicates that the TCI state corresponding to at least one QCL type D reference signal can directly perform data transmission, or indicates that the terminal has stored the QCL attribute of the SSB associated with at least one reference signal, or indicates that at least one reference signal does not require additional SSB reception when used for beam indication, or indicates that at least one reference signal has completed synchronization. The above examples are also applicable in reverse. It should be understood that the above is only a possible situation shown for the convenience of description and is not intended to limit the specific numerical value of the first field in the embodiments of the present application.

[0150] Table 1

[0151] Exemplarily, the first field may be a plurality of bits, and a bitmap is used, with each bit corresponding to a reported reference signal. Exemplarily, the field may have N bits corresponding to N reported reference signals, with each bit corresponding to one of the N reported reference signals. For example, if N is 4, the first field indicates 1001, and the first and fourth bits have a value of 1, indicating that reference signal #1 and reference signal #4 can be directly activated, or reference signal #1 and reference signal #4 have completed time-frequency tracking, or the TCI state corresponding to reference signal #1 and reference signal #4 of QCL type D can directly perform TCI state indication, or the TCI state corresponding to reference signal #1 and reference signal #4 of QCL type D can directly perform data transmission, or the terminal stores the QCL attributes of the SSB associated with at least one reference signal, or indicates that at least one reference signal does not require additional SSB reception when used for beam indication, or indicates that at least one reference signal has completed synchronization. The second and third bits have a value of 3, indicating that reference signal #2 and reference signal #3 cannot be directly activated, or reference signal #2 and reference signal #3 have not completed time-frequency tracking, or the TCI state corresponding to reference signal #2 and reference signal #3 of QCL type D cannot be directly indicated as TCI state indication, or the TCI state corresponding to reference signal #2 and reference signal #3 of QCL type D cannot be directly indicated as data transmission. It should be understood that the above example is only a possible case for the convenience of description and is not intended to limit the specific value of the first field in the embodiment of the present application.

[0152] Optionally, the activation information is indicated by at least one second field, at least one second field is associated with at least one reference signal, and each second field is used to indicate the activation state of a reference signal, or at least one second field is associated with at least one TCI state, and each second field is used to indicate the activation state of a TCI state. The activation information is used to indicate whether the corresponding reference signal in the at least one reference signal is directly activated, or whether the corresponding reference signal in the at least one reference signal completes time-frequency tracking, or to indicate whether the TCI state corresponding to the corresponding reference signal in at least one quasi-co-located type QCL type D reference signal can directly perform TCI state indication (for example, indicating the reference signal corresponding to the channel reference for data transmission), or to indicate whether the TCI state corresponding to the corresponding reference signal in at least one reference signal of QCL Type D can perform data transmission, or to indicate whether the terminal stores the QCL attribute of the SSB associated with at least one reference signal, or to indicate whether additional SSB reception is required when at least one reference signal is used for beam indication, or to indicate whether at least one reference signal completes synchronization.

[0153] Exemplarily, the second field may be a single bit, such as the "Activated State" corresponding to CRI#1 shown in Table 2. When the activation information corresponding to CR1#1 is 0, it indicates that CRI#1 cannot be directly activated, or that CRI#1 has not completed time-frequency tracking, or that the TCI state corresponding to CRI#1 cannot be directly used for TCI state indication, or that the TCI state corresponding to CRI#1 in at least one reference signal of QCL Type D cannot be directly used for data transmission. When the activation information corresponding to CR1#1 is 1, it indicates that CRI#1 can be directly activated, or that CRI#1 has completed time-frequency tracking, or that the TCI state corresponding to CRI#1 can be directly used for TCI state indication, or that the TCI state corresponding to CRI#1 in at least one reference signal of QCL Type D can be directly used for data transmission, or that the terminal has stored the QCL attributes of the SSB associated with at least one reference signal, or that additional SSB reception is not required when at least one reference signal is used for beam indication, or that synchronization of at least one reference signal is completed. The above examples are also applicable in reverse. Other CRI#s are similar to the above examples and are not further described here. It should be understood that the above is only a possible situation shown for the convenience of description and is not intended to limit the specific value of the second field in the embodiments of the present application.

[0154] Table 2

[0155] In case 2, the activation information indicates that at least one reference signal has been activated. The activation information is used to indicate the index of at least one reference signal, and the at least one reference signal has been activated, or the activation information is used to indicate the index of at least one TCI state, and the at least one TCI state has been activated.

[0156] Exemplarily, the terminal may use a specific MAC-CE signaling to send at least one activated reference signal or TCI state to the network device. The TCI state sent by the MAC-CE signaling indicates that at least one reference signal has been activated, and the DCI signaling may directly indicate any TCI state in the MAC-CE signaling, or the RSs reported by the MAC-CE signaling indicate that they have been activated, and the DCI signaling may directly indicate any reference signal in the MAC-CE signaling as a reference signal for data transmission, or the DCI signaling may directly indicate that the QCL Type D reference signal is the TCI state of any reference signal in the MAC-CE signaling. The MAC-CE signaling may include at least one of the following information:

[0157] (1) At least one TCI state. The at least one TCI state may be one or more of the following: UL TCI state, DL TCI state, and joint TCI state.

[0158] Optionally, other fields are used to indicate that the TCI state in the MAC-CE signaling is any one of the UL TCI state, DL TCI state, and joint TCI state.

[0159] (2) An index of at least one reference signal, where the index of the at least one reference signal may indicate one or more of a synchronization signal and PBCH block (SSB), a CSI-RS, and a sounding reference signal (SRS).

[0160] Optionally, the number of reference signals or TCI states reported by the MAC-CE signaling can be configured by the network device, specified by the protocol, set by the terminal, or a combination of the above three situations. This application does not limit this.

[0161] Exemplarily, if configured by the terminal, the MAC-CE signaling further includes information on the number of reference signals or TCI states. For example, the MAC-CE signaling includes information on the number of reference signals or TCI states as 3, i.e., information on the number of three reference signals: reference signal #1, reference signal #2, and reference signal #3. Alternatively, the MAC-CE signaling includes information on the number of three TCI states: TCI state #1, TCI state #2, and TCI state #3. Optionally, the MAC-CE signaling further includes an identifier of the reference signal or TCI state carried in the information on the number of reference signals or TCI states.

[0162] Alternatively, the network device directly configures the number of reference signals or TCI states that the terminal can activate, and the terminal sends activation information corresponding to the number to the network device. For example, the network device directly configures the terminal to activate three reference signals or three TCI states, and the terminal sends three activation messages to the network device (for example, the three activation messages activate reference signal #1, reference signal #2, and reference signal #3, or activate TCI state #1, TCI state #2, and TCI state #3).

[0163] Alternatively, if the network device configuration or protocol specifies the maximum number of reference signals or TCI states that a terminal can activate, or if the terminal carries the maximum number of activated reference signals in the capability information sent to the network device, then the MAC-CE signaling also includes information about the number of reference signals or TCI states. For example, if the network device configuration or protocol specifies that the maximum number of reference signals that a terminal can activate, or if the terminal carries the maximum number of activated reference signals in the capability information sent to the network device, is N, for example, N is 4, then the four reference signals include reference signal #1, reference signal #2, reference signal #3, and reference signal #4, or the four TCI states include TCI state #1, TCI state #2, TCI state #3, and TCI state #4, then the MAC-CE signaling also includes information about the number of the four reference signals, reference signal #1, reference signal #2, reference signal #3, and reference signal #4, or includes information about the number of the four TCI states, TCI state #1, TCI state #2, TCI state #3, and TCI state #4.

[0164] Alternatively, MAC-CE signaling indicates the presence of reference signals or TCI states at certain locations through bit mapping. For example, the Mth field indicates 1011, and the bit values ​​of the 1st, 3rd, and 4th bits are 1, indicating that reference signal #1, reference signal #3, and reference signal #4 exist, or that TCI state #1, TCI state #3, and TCI state #4 exist.

[0165] The aforementioned reference signal #1, reference signal #2, reference signal #3, reference signal #4 or TCI state #1, TCI state #2, TCI state #3, TCI state #4 represent the reference signal or TCI state at the corresponding position of the MAC CE, and the specific corresponding position reports the reference signal index or TCI state index.

[0166] As a possible implementation manner, when one or more of the following preset conditions are met, the activation state of at least one reference signal is effective, or the activation state of at least one TCI state is effective.

[0167] Optionally, the preset condition is that the terminal reports the activation information for a first duration. Exemplarily, the first duration can be 0 to 10 ms, or the first duration can be indicated by an index, for example, the index has four levels: 1, 2, 3, and 4, and the sampling time point corresponding to index 1 is 2.5 ms, the sampling time point corresponding to index 2 is 5 ms, the sampling time point corresponding to index 3 is 7.5 ms, and the sampling time point corresponding to index 4 is 10 ms.

[0168] Optionally, the preset condition is that a second duration has passed after the terminal receives feedback information from the network device, where the feedback information is information sent by the network device in response to the activation information. Exemplarily, the second duration can be 0 to 20 ms, or the second duration can be indicated by an index, for example, the index has four levels: 1, 2, 3, and 4, where the sampling time point corresponding to index 1 is 5 ms, the sampling time point corresponding to index 2 is 10 ms, the sampling time point corresponding to index 3 is 15 ms, and the sampling time point corresponding to index 4 is 20 ms.

[0169] As a possible design, the terminal receives first downlink control information from the network device, where the first downlink control information is used to indicate a TCI state or reference signal referenced during data transmission, or the first downlink control information is used to indicate a TCI state or reference signal referenced by a transmit beam or receive beam during data transmission. Optionally, the specific contents of the fields are described in detail below, taking the first downlink control information as DCI signaling as an example.

[0170] Optionally, the first downlink control information includes a third field, where the third field is used to indicate one of the at least one reference signal or at least one TCI state activated corresponding to the "transmission configuration indication" field. In other words, a third field is introduced into the DCI signaling, where the third field is used to indicate whether the "transmission configuration indication" field in the DCI indicates one of the at least one TCI state activated in the MAC-CE signaling, or one of the at least one reference signal or at least one TCI state triggered for activation sent by the terminal to the network device.

[0171] Exemplarily, when the third field is 0, the "transmission configuration indication" field indicates one of the at least one TCI states activated by MAC-CE signaling; when the third field is 1, the "transmission configuration indication" field indicates one of the at least one reference signal or at least one TCI state sent by the terminal to the network device to trigger activation. It should be understood that the above is merely one possible scenario for ease of description and does not limit the specific value of the third field in the embodiments of the present application.

[0172] Further optionally, when the network device configuration does not allow the terminal to report triggering activation of at least one reference signal or at least one TCI state, or the terminal does not support activation of at least one reference signal or at least one TCI state, the length of the third field is 0.

[0173] Optionally, the first downlink control information includes a fourth field, which is used to indicate one of the at least one reference signal or at least one TCI state that is activated. In other words, the fourth field is introduced into the DCI signaling, which is used to indicate one of the at least one reference signal or at least one TCI state that is sent by the terminal to the network device to trigger activation.

[0174] Further optionally, the fourth field and the "transmission configuration indication" field of the third field cannot be valid at the same time.

[0175] Exemplarily, when the fourth field is a preset value, the "transmission configuration indication" field is effective, indicating one of the at least one TCI states activated by the MAC-CE signaling sent by the network device. The preset value can be all 0s or all 1s. When the fourth field is a value other than the preset value, the DCI signaling indicates one of the at least one reference signal or at least one TCI state triggered by the terminal to the network device, and the "transmission configuration indication" field is invalid. It should be understood that the above is only a possible scenario shown for ease of description and does not limit the specific value of the fourth field in the embodiments of the present application.

[0176] Further optionally, the length of the fourth field may be configured by the network device, or may be related to the number of at least one reference signal or at least one TCI state sent by the terminal to the network device to trigger activation. For example, if the network device configuration or protocol provisions or the number of at least one reference signal or at least one TCI state sent by the terminal to the network device to trigger activation is N, the length of the fourth field may be

[0177] Optionally, the length of the "transmission configuration indication" field in the DCI signaling can be increased. This field is used to indicate one of the at least one TCI state activated in the MAC-CE signaling, and is used to indicate one of the at least one reference signal or at least one TCI state sent by the terminal to the network device to trigger activation. Exemplarily, when the network device is not configured to support at least one reference signal or at least one TCI state activated by the terminal, or the terminal does not support activation of at least one reference signal or at least one TCI state, the TCI field is 3 bits (i.e., the length of the prior art); when the network device is configured to support at least one reference signal or at least one TCI state activated by the terminal, or the terminal supports activation of at least one reference signal or at least one TCI state, the length of the "transmission configuration indication" field can be greater than 3 bits, for example, it can be 4 bits.

[0178] For example, as shown in Figure 10, the "transmission configuration indication" field can correspond to the TCI states corresponding to the TCI code points in the MAC-CE signaling sent by the network device from small to large (for example, 0000 corresponds to TCI state#m, 0001 corresponds to TCI state#n), and at least one reference signal or at least one TCI state from large to small or from small to large for triggering activation sent by the terminal to the network device (for example, 1000 corresponds to TCI state#k or RS#t, 1001 corresponds to TCI state#j or RS#q). It can also be at least one reference signal or at least one TCI state reported by the terminal from current to back or from back to current for triggering activation.

[0179] Optionally, the terminal may perform data transmission according to the TCI state or reference signal indicated by the first downlink control information. Further optionally, the data transmission may be downlink data reception (e.g., PDSCH, downlink physical control channel (PDCCH), CSI-RS reception) or uplink data transmission (e.g., PUCCH, PUSCH, SRS transmission).

[0180] In some embodiments, the terminal may also determine a path loss signal of an uplink transmission.

[0181] As a possible implementation, if the above-mentioned DCI signaling indicates that at least one reference signal sent by the terminal to the network device is used as a reference signal for uplink transmission, the uplink transmission path loss signal includes but is not limited to two results, as follows:

[0182] Result 1: The path loss reference signal is the reference signal indicated by the first downlink control information, and the terminal performs path loss estimation based on the reference signal.

[0183] Result 2: The path loss reference signal is a path loss reference signal indicated by the first downlink control information and satisfies the QCL type D relationship.

[0184] As a possible implementation manner, the terminal may also determine the transmit power of uplink transmission data according to the reference power control parameter.

[0185] The reference power control parameter includes at least one of a path loss adjustment factor (alpha), a closed loop power control parameter (closed loop index), and a base power p0. When the first downlink control information instructs the terminal to report the triggered RS as a reference signal or beam reference signal for uplink transmission, the reference power control parameter for uplink transmission may be any one of the following:

[0186] The uplink power control parameters are pre-configured for the network device, and the terminal determines the uplink transmission power according to the pre-configured uplink power control parameters;

[0187] The terminal determines the power of PUSCH / SRS / PUCCH transmission based on the minimum or maximum power control parameter of p0 alpha setforPUSCH / SRS / PUCCH id configured for the network device. For example, the terminal determines the power of PUSCH transmission based on the minimum or maximum power control parameter of p0 alpha setforPUSCH / SRS / PUCCH id configured. For another example, the terminal determines the power of SRS transmission based on the minimum or maximum power control parameter of p0 alpha set for SRS id configured. For another example, the terminal determines the power of PUCCH transmission based on the minimum or maximum power control parameter of p0 alpha set for PUCCH id configured.

[0188] In order to receive the power control parameter of the uplink transmission before the first downlink control information is received, the terminal still performs uplink transmission according to the power of the uplink transmission before the first downlink control information is received.

[0189] Under the existing beam management process, if the optimal beam reported by the terminal is not activated by the network device, the network device must send MAC-CE signaling to activate it before providing beam indication. Because MAC-CE signaling takes at least 3ms to take effect, the delay in the new beam taking effect is significant. In this application, the terminal directly indicates that at least one reported reference signal or at least one TCI state is used as a new beam. This can reduce the delay caused by sending MAC-CE signaling to activate at least one reference signal or at least one TCI state, reduce signaling overhead, and ensure communication reliability.

[0190] Please refer to Figure 11, which is a flow chart of another communication method provided by an embodiment of the present application. Optionally, the method can be applied to a communication system, for example, the communication system shown in Figures 2, 3a to 3b, 4, and 5.

[0191] The communication method shown in Figure 11 may include multiple steps from step S1101 to step S1102. It should be understood that for the convenience of description, this application describes the sequence of steps S1101 to step S1102, and is not intended to limit execution to the above sequence. The embodiment of this application does not limit the order of execution, execution time, number of executions, etc. of the above one or more steps. Steps S1101 to step S1102 are as follows:

[0192] Step S1101: A network device sends at least one reference signal to a terminal.

[0193] Accordingly, the terminal receives at least one reference signal from the network device.

[0194] For a detailed explanation of the reference signal, please refer to the above content and will not be repeated here.

[0195] Step S1102: The terminal sends a measurement result of at least one reference signal to a network device.

[0196] Accordingly, the network device receives a measurement result of at least one reference signal from the terminal.

[0197] Among them, for a detailed explanation of the measurement results of at least one reference signal, please refer to the content of the aforementioned step S902, which will not be repeated here. Optionally, when one or more of the preset conditions are met, at least one reference signal is activated. Optionally, there is no need to indicate that at least one reference signal is activated through additional indication. Exemplarily, the situation in which at least one parameter signal is activated may be: at least one reference signal completes time-frequency tracking, or the TCI state corresponding to at least one quasi-co-located reference signal of type QCL type D can directly perform TCI state indication, or the TCI state corresponding to at least one reference signal of QCL Type D can perform data transmission, or the terminal stores the QCL properties of the SSB associated with at least one reference signal, or at least one reference signal does not require additional SSB reception when used for beam indication, or at least one reference signal completes synchronization.

[0198] Exemplarily, the preset conditions include:

[0199] (1) The RSRP / SINR of the reported reference signal is greater than the RSRP / SINR of the current beam. For example, the RSRP of the reported reference signal is greater than the RSRP of the current beam. For another example, the SINR of the reported reference signal is greater than the SINR of the current beam. Optionally, the current beam can be the reference signal of QCL type D corresponding to the current uplink or downlink transmission TCI state, or it can be a reference signal configured by the network device. The current beam RSRP / SINR can be the RSRP reported last time, or it can be the RSRP reported this time, or the current beam SINR can be the SINR reported last time, or it can be the SINR reported this time.

[0200] (2) The RSRP / SINR of the reference signal is greater than the RSRP / SINR of the current beam by an offset parameter. For example, the RSRP of the reference signal is greater than the RSRP of the current beam by an offset parameter. Another example is that the SINR of the reference signal is greater than the SINR of the current beam by an offset parameter.

[0201] (3) The RSRP / SINR of the reference signal is greater than a first threshold. For example, the RSRP of the reference signal is greater than the first threshold. For another example, the SINR of the reference signal is greater than the first threshold. Optionally, the first threshold may be configured by the network device or specified by the protocol.

[0202] (4) The RSRP / SINR of the reference signal is greater than the RSRP / SINR of the reference signal corresponding to QCL type D in any currently activated TCI state. For example, the RSRP of the reference signal is greater than the RSRP of the reference signal corresponding to QCL type D in any currently activated TCI state. For another example, the SINR of the reference signal is greater than the SINR of the reference signal corresponding to QCL type D in any currently activated TCI state.

[0203] (5) The RSRP / SINR of the reference signal is greater than an offset parameter of the RSRP / SINR of the reference signal corresponding to QCL type D in any currently activated TCI state. For example, the RSRP of the reference signal is greater than an offset parameter of the RSRP of the reference signal corresponding to QCL type D in any currently activated TCI state. For another example, the SINR of the reference signal is greater than an offset parameter of the SINR of the reference signal corresponding to QCL type D in any currently activated TCI state.

[0204] (6) The RSRP / SINR of the reference signal is greater than the RSRP / SINR of the RSs corresponding to QCL type D in all currently activated TCI states. For example, the RSRP of the reference signal is greater than the RSRP of the RSs corresponding to QCL type D in all currently activated TCI states. For another example, the SINR of the reference signal is greater than the SINR of the RSs corresponding to QCL type D in all currently activated TCI states.

[0205] (7) The RSRP / SINR of the reference signal is greater than an offset parameter of the maximum RSRP / SINR of the RS corresponding to QCL type D in the currently activated TCI state. For example, the RSRP of the reference signal is greater than an offset parameter of the maximum RSRP of the RS corresponding to QCL type D in the currently activated TCI state. For another example, the SINR of the reference signal is greater than an offset parameter of the maximum SINR of the RS corresponding to QCL type D in the currently activated TCI state.

[0206] (8) Sending the measurement result of at least one reference signal is initiated by the terminal or triggered by an event.

[0207] Exemplarily, the events may include event one: the quality of the current service beam is lower than the first threshold. Event two: there is at least one new beam whose quality is higher than the current service beam by a second threshold. Event three: there is at least one new beam whose quality is higher than the first activated beam by a third threshold. It should be noted that the above-mentioned first threshold, second threshold and third threshold may be specific values ​​reported by the terminal device, configured by the network device, or specified by the protocol, and this application does not limit this. In addition, in this application, less than can be replaced by less than or equal to, and greater than can be replaced by greater than or equal to.

[0208] In one possible design, the first activated beam may be one or more of the following: the beam with the Mth best quality among the currently activated beams, that is, the reference signal with the Mth best quality among the reference signals associated with the currently activated TCI states, or the beam corresponding to the reference signal, or the RS with the Mth best quality among the RSs associated with the activated TCI states. M may be a specific value reported by a network terminal device, configured by a network device, or specified by a protocol.

[0209] In one possible design, the new beam in event 2 can be one or more of the following:

[0210] (1) A beam different from the current serving beam or the corresponding reference signal.

[0211] (2) One or more reference signals configured by the network device for monitoring the new beam.

[0212] (3) Reference signals associated with the configured TCI state (except the current serving beam).

[0213] In one possible design, the event three new beam can be one or more of the following:

[0214] (1) A beam or reference signal that is different from the first active beam.

[0215] (2) One or more reference signals configured by the network device for monitoring the new beam.

[0216] (3) Reference signals associated with the configured TCI state (except the first activated beam).

[0217] It should be noted that the reference signal associated with the aforementioned TCI state can be understood as: the reference signal corresponding to QCL type D in the TCI state, or the SSB that has a QCL relationship with the QCL type D reference signal in the TCI state. The SSB is the SSB corresponding to the source QCL resource of the QCL chain, that is, the source QCL resource is an SSB resource. The current serving beam can be understood as the indicated TCI state; the reference signal corresponding to the beam can be understood as the reference signal associated with the TCI state.

[0218] The aforementioned beam can be characterized by resources or reference signals or reference signal resource indexes (i.e., the four terms can be interchangeable). The beam in this application, including the first activated beam and the new beam, can refer to the resources or reference signals or reference signal resources corresponding to the beam, and can also be replaced by the resources or reference signals or reference signal resources corresponding to the beam. For example, the beam index can be replaced by the resource index or reference signal index or reference signal resource index or resource index corresponding to the beam.

[0219] The above beam (which can be understood as a reference signal) can be the beam of the serving cell or the beam of the candidate cell / neighboring cell. Please refer to the sixth point of the above abbreviation.

[0220] The quality (or beam quality) can be any of the following: RSRP, SINR, L1-RSRP, L1-SINR, SS-RSRP, CSI-RSRP, SS-SINR, CSI-SINR.

[0221] The above describes in detail the method of the embodiment of the present application. The following provides an apparatus of the embodiment of the present application.

[0222] It should be understood that the division of the units in the device provided in the embodiments of the present application is only a division of logical functions, and in actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. In addition, the units in the device can be implemented in the form of a processor calling software. For example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of each unit of the device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device.

[0223] Alternatively, the units in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units may be implemented by designing the hardware circuits, and the hardware circuits may be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), which implements the functions of some or all of the above units by designing the logical relationships of the components within the circuit. For another example, in another implementation, the hardware circuit may be implemented by a programmable logic device (PLD), taking a field programmable gate array (FPGA) as an example, which may include a large number of logic gate circuits, and the connection relationships between the logic gate circuits may be configured through configuration files, thereby implementing the functions of some or all of the above units.

[0224] In an embodiment of the present application, each unit in the device may be one or more processors (or processing circuits) configured to implement the above method, such as: CPU, (graphics processing unit, GPU), neural network processing unit (neural network processing unit, NPU), tensor processing unit (tensor processing unit, TPU), deep learning processing unit (deep learning processing unit, DPU), microprocessor (micro processor unit, MPU), digital signal processor (digital signal processor, DSP), ASIC, FPGA, or a combination of at least two of these processor forms.

[0225] In addition, the various units in the above devices can be fully or partially integrated together, or can be implemented independently. In one implementation, these units are integrated together and implemented in the form of a system-on-a-chip (SOC). The SOC may include at least one processor for implementing any of the above methods or implementing the functions of the various units of the device. The type of the at least one processor may be different, for example, including a CPU and an FPGA, or including a CPU and an artificial intelligence processor, or including a CPU and a GPU, etc. Several possible devices are listed below.

[0226] Please refer to Figure 12, which is a schematic diagram of the structure of a communication device 120 provided in an embodiment of the present application. Optionally, the communication device 120 can be an independent device, such as a terminal. Alternatively, the communication device 120 can be a component in an independent device (such as a terminal), such as a chip or integrated circuit. The communication device 120 is used to implement the aforementioned communication method, such as the communication method shown in Figure 9.

[0227] In one possible design, the communication device 120 includes a receiving unit 1201 and a sending unit 1202. The communication device 120 is configured to implement the aforementioned communication method, such as the communication method shown in Figure 9. Exemplarily, the communication device is configured to execute the terminal execution method.

[0228] In one possible implementation, the receiving unit 1201 is configured to receive at least one reference signal from a network device. The sending unit 1202 is further configured to send activation information to the network device, where the activation information is used to indicate the activation state of the at least one reference signal, or the activation information is used to indicate the activation state of a transmission configuration indication state TCI state corresponding to the at least one reference signal.

[0229] In another possible embodiment, the activation state is used to indicate whether the at least one reference signal has completed time-frequency tracking, or to indicate whether the TCI state corresponding to the at least one quasi-coordinated type QCL type D reference signal can directly perform TCI state indication, or to indicate whether the at least one reference signal is activated, or to indicate whether the TCI state corresponding to the at least one reference signal of QCL Type D can perform data transmission, or to indicate whether the terminal stores the QCL properties of the SSB associated with the at least one reference signal, or to indicate whether additional SSB reception is required when the at least one reference signal is used for beam indication, or to indicate whether the at least one reference signal has completed synchronization.

[0230] In another possible implementation, the sending unit 1202 is further used to send the measurement result of the at least one reference signal to the network device, wherein the measurement result includes one or more of the index of the at least one reference signal, the signal quality corresponding to the at least one reference signal, and the capability index information corresponding to the at least one reference signal.

[0231] In yet another possible implementation, the activation information is indicated by a first field.

[0232] In another possible embodiment, the activation information is indicated by at least one second field, the at least one second field is associated with the at least one reference signal, and each second field is used to indicate the activation status of a reference signal, or the at least one second field is associated with at least one TCI state, and each second field is used to indicate the activation status of a TCI state.

[0233] In another possible implementation, the activation information is used to indicate the index of the at least one reference signal, and the at least one reference signal has been activated, or the activation information is used to indicate the index of the at least one TCI state, and the at least one TCI state has been activated.

[0234] In another possible embodiment, the activation state of at least one reference signal or the activation state of at least one TCI state takes effect when one or more of the following preset conditions are met, and the preset conditions include a first time period after the terminal reports the activation information and a second time period after the terminal receives feedback information from the network device, and the feedback information is information sent by the network device in response to the activation information.

[0235] In another possible embodiment, the receiving unit 1201 is also used to receive first downlink control information from the network device, wherein the first downlink control information includes a third field, and the third field is used to indicate one of at least one reference signal or at least one TCI state activated corresponding to the TCI field.

[0236] In another possible embodiment, the receiving unit 1201 is further used to receive first downlink control information from the network device, wherein the first downlink control information includes a fourth field, and the fourth field is used to indicate one of at least one activated reference signal or at least one TCI state.

[0237] In another possible implementation, the method further includes a processing unit configured to perform uplink or downlink transmission of data according to the TCI state or reference signal indicated by the first downlink control information.

[0238] In another possible embodiment, the processing unit is further used to determine a path loss reference signal for uplink transmission, wherein the path loss reference signal is one or more of the following: a reference signal indicated by the first downlink control information, and a path loss reference signal in which the reference signal indicated by the first downlink control information satisfies a QCL type D relationship.

[0239] In another possible embodiment, the processing unit is also used to determine the transmit power of the uplink transmission based on the reference power control parameters, wherein the reference power control parameters include one or more of the power control parameters pre-configured by the network device, the basic power p0 configured by the network device, the path loss adjustment factor alpha, the physical uplink shared channel PUSCH, the sounding reference signal SRS, the minimum or maximum power control parameters of the physical uplink control channel PUCCH index, and the power control parameters associated with the TCI state associated with the uplink transmission.

[0240] In another possible design, the communication device 120 includes a receiving unit 1201 and a sending unit 1202, and is configured to implement the aforementioned communication method, such as the communication method shown in Figure 11. Exemplarily, the communication device is configured to execute the terminal execution method.

[0241] In one possible implementation, the receiving unit 1201 is configured to receive at least one reference signal from a network device, wherein the at least one reference signal is activated when one or more preset conditions are met. The sending unit 1202 is configured to send a measurement result of the at least one reference signal to the network device.

[0242] In another possible embodiment, the preset condition includes: the reference signal received power RSRP / signal to interference plus noise ratio SINR of the reference signal is greater than the RSRP / SINR of the current beam, the RSRP / SINR of the reference signal is greater than a bias parameter of the RSRP / SINR of the current beam, the RSRP / SINR of the reference signal is greater than the first threshold, the RSRP / SINR of the reference signal is greater than the RSRP / SINR of the reference signal corresponding to QCL type D of any currently activated TCI state, the RSRP / SINR of the reference signal is greater than a bias parameter of the RSRP / SINR of the reference signal corresponding to QCL type D of any currently activated TCI state, the RSRP / SINR of the reference signal is greater than the RSRP / SINR of the RS corresponding to QCL type D of all currently activated TCI states, the RSRP / SINR of the reference signal is greater than a bias parameter of the maximum RSRP / SINR of the RS corresponding to QCL type D of the currently activated TCI state, and the sending of the measurement result of the at least one reference signal is initiated by the terminal or triggered by an event.

[0243] The embodiments of the present application and the above-mentioned method embodiments are based on the same concept, and the technical effects they bring are also the same. For the specific principles, please refer to the description of the above-mentioned embodiments, which will not be repeated here.

[0244] Please refer to Figure 13, which is a schematic diagram of the structure of another communication device 130 provided in an embodiment of the present application. Optionally, the communication device 130 can be an independent device, such as a network device. Alternatively, the communication device 130 can be a component in an independent device (such as a network device), such as a chip or integrated circuit. The communication device 130 is used to implement the aforementioned communication method, such as the communication method shown in Figure 9.

[0245] In one possible design, the communication apparatus 130 includes a sending unit 1301 and a receiving unit 1302. The communication apparatus 130 is configured to implement the aforementioned communication method, such as the communication method shown in Figure 9. Exemplarily, the communication apparatus is configured to execute the method executed by the network device.

[0246] In one possible implementation, the sending unit 1301 is configured to send at least one reference signal to the terminal. The receiving unit 1302 is configured to receive activation information from the terminal, where the activation information is used to indicate the activation state of the at least one reference signal, or the activation information is used to indicate the activation state of the at least one transmission configuration indication state TCI state.

[0247] In another possible embodiment, the activation state is used to indicate whether the at least one reference signal has completed time-frequency tracking, or to indicate whether the TCI state corresponding to the at least one quasi-coordinated type QCL type D reference signal can directly perform TCI state indication, or to indicate whether the at least one reference signal is activated, or to indicate whether the TCI state corresponding to the at least one reference signal of QCL Type D can perform data transmission, or to indicate whether the terminal stores the QCL properties of the SSB associated with the at least one reference signal, or to indicate whether additional SSB reception is required when the at least one reference signal is used for beam indication, or to indicate whether the at least one reference signal has completed synchronization.

[0248] In another possible implementation, the receiving unit 1302 is further used to receive a measurement result of the at least one reference signal from the terminal, wherein the measurement result includes one or more of an index of the at least one reference signal, a signal quality corresponding to the at least one reference signal, and capability index information corresponding to the at least one reference signal.

[0249] In yet another possible implementation, the activation information is indicated by a first field.

[0250] In another possible embodiment, the activation information is indicated by at least one second field, the at least one second field is associated with the at least one reference signal, and each second field is used to indicate the activation status of a reference signal, or the at least one second field is associated with at least one TCI state, and each second field is used to indicate the activation status of a TCI state.

[0251] In another possible implementation, the activation information is used to indicate the index of the at least one reference signal, and the at least one reference signal has been activated, or the activation information is used to indicate the index of the at least one TCI state, and the at least one TCI state has been activated.

[0252] In another possible implementation, the sending unit 1301 is further configured to send feedback information to the terminal, where the feedback information is information sent by the network device in response to the activation information.

[0253] In another possible embodiment, the sending unit 1301 is also used to send first downlink control information to the terminal, wherein the first downlink control information includes a third field, and the third field is used to indicate one of at least one reference signal or at least one TCI state activated corresponding to the TCI field.

[0254] In another possible implementation, the sending unit 1301 is further used to send first downlink control information to the terminal, wherein the first downlink control information includes a fourth field, and the fourth field is used to indicate one of at least one activated reference signal or at least one TCI state.

[0255] In another possible design, the communication device 130 includes a sending unit 1301 and a receiving unit 1302. The communication device 130 is used to implement the aforementioned communication method, such as the communication method shown in Figure 11. Exemplarily, the communication device is used to execute the method executed by the network device.

[0256] In one possible implementation, the sending unit 1301 is configured to send at least one reference signal to the terminal, wherein the at least one reference signal is activated when one or more of preset conditions are met. The receiving unit 1302 is configured to receive a measurement result of the at least one reference signal from the terminal.

[0257] In another possible embodiment, the preset condition includes: the reference signal received power RSRP / signal to interference plus noise ratio SINR of the reference signal is greater than the RSRP / SINR of the current beam, the RSRP / SINR of the reference signal is greater than a bias parameter of the RSRP / SINR of the current beam, the RSRP / SINR of the reference signal is greater than the first threshold, the RSRP / SINR of the reference signal is greater than the RSRP / SINR of the reference signal corresponding to QCL type D of any currently activated TCI state, the RSRP / SINR of the reference signal is greater than a bias parameter of the RSRP / SINR of the reference signal corresponding to QCL type D of any currently activated TCI state, the RSRP / SINR of the reference signal is greater than the RSRP / SINR of the RS corresponding to QCL type D of all currently activated TCI states, the RSRP / SINR of the reference signal is greater than a bias parameter of the maximum RSRP / SINR of the RS corresponding to QCL type D of the currently activated TCI state, and the sending of the measurement result of the at least one reference signal is initiated by the terminal or triggered by an event.

[0258] The embodiments of the present application and the above-mentioned method embodiments are based on the same concept, and the technical effects they bring are also the same. For the specific principles, please refer to the description of the above-mentioned embodiments, which will not be repeated here.

[0259] Please refer to Figure 14, which is a schematic diagram of the structure of another communication device 140 provided in an embodiment of the present application. The communication device 140 can be an independent device, such as a terminal or a network device, or a device included in an independent device, such as a chip, a software module, or an integrated circuit. The communication device 140 may include at least one processor 1401 and a communication interface 1402. Optionally, it may also include at least one memory 1403. Further optionally, it may also include a connection line 1404, wherein the processor 1401, the communication interface 1402 and / or the memory 1403 are connected via the connection line 1404, and / or communicate with each other via the connection line 1404 to transmit control signals and / or data signals.

[0260] in:

[0261] The processor 1401 is a module that performs arithmetic operations and / or logical operations, and may specifically include one or more of the following modules: a filter, a modem, a power amplifier, a low noise amplifier (LNA), a baseband processor, a radio frequency processor, a radio frequency circuit, a central processing unit (CPU), an application processor (AP), a microcontroller unit (MCU), an electronic control unit (ECU), a graphics processing unit (GPU), a microprocessor (MPU), an application specific integrated circuit (ASIC), an image signal processor (ISP), a digital signal processor (DSP), a field programmable gate array (FPGA), a complex programmable logic device (CPLD), or a coprocessor, etc.

[0262] The communication interface 1402 may be used to provide information input or output for at least one processor, or to receive externally transmitted signals and / or send externally transmitted signals.

[0263] For example, communication interface 1402 may include interface circuitry.

[0264] For example, the communication interface 1402 may include a wired link interface such as an Ethernet cable, or a wireless link interface (Wi-Fi, Bluetooth, general wireless transmission, vehicle-mounted short-range communication technology, and other short-range wireless communication technologies, etc.).

[0265] Optionally, the communication interface 1402 may further include a radio frequency transmitter, an antenna, etc. When the communication interface 1402 includes an antenna, the number of antennas may be one or more.

[0266] As a possible design, if the communication device 140 is a standalone device, the communication interface 1402 may include a receiver and a transmitter. The receiver and the transmitter may be the same component or different components. When the receiver and the transmitter are the same component, the component may be referred to as a transceiver.

[0267] As another possible design, if the communication device 140 is a chip or a circuit, the communication interface 1402 may include an input interface and an output interface. The input interface and the output interface may be the same interface, or may be different interfaces.

[0268] Optionally, the functions of the communication interface 1402 may be implemented by a transceiver circuit or a dedicated transceiver chip.

[0269] Memory 1403 is used to provide storage space for storing data such as the operating system and computer programs. Memory 1403 can be one or a combination of random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or compact disc read-only memory (CD-ROM).

[0270] The functions and actions of the modules or units in the communication device 140 listed above are merely exemplary.

[0271] Each functional unit in the communication device 140 can be used to implement the aforementioned communication method, such as the communication method shown in Figure 9 or Figure 11, for example, a method executed by a terminal or a network device.

[0272] Optionally, processor 1401 may be a processor specifically configured to execute the aforementioned method (referred to as a dedicated processor for ease of distinction), or may be a processor configured to execute the aforementioned method by invoking a computer program (referred to as a dedicated processor for ease of distinction). Optionally, the at least one processor may include both a dedicated processor and a general-purpose processor.

[0273] Optionally, in the case where the communication device 140 includes at least one memory 1403 , if the processor 1401 implements the aforementioned communication method by calling a computer program, the computer program may be stored in the memory 1403 .

[0274] The present application also provides a chip comprising a logic circuit and a communication interface. The communication interface is configured to receive or transmit signals, and the logic circuit is configured to receive or transmit signals via the communication interface. The chip is configured to implement the aforementioned communication methods, such as those shown in FIG9 or FIG11.

[0275] An embodiment of the present application also provides a computer-readable storage medium, in which instructions are stored. When the instructions are executed on at least one processor (or communication device), the aforementioned communication method, such as the communication method shown in Figure 9 or Figure 11, is implemented.

[0276] An embodiment of the present application further provides a computer program product, which includes computer instructions, and the computing instructions are used to implement the aforementioned communication method, such as the communication method shown in Figure 9 or Figure 11.

[0277] It should be noted that in the embodiments of this application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a concrete manner.

[0278] In the embodiments of this application, "at least one" refers to one or more, and "more" refers to two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items.

[0279] For example, at least one of a, b, or c can represent: a, b, c, (a and b), (a and c), (b and c), or (a and b and c), where a, b, and c can be single or plural. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, A and / or B can represent: A alone, A and B together, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0280] Furthermore, unless otherwise specified, ordinal numbers such as "first" and "second" in the embodiments of this application are used to distinguish multiple objects and are not used to define the order, timing, priority, or importance of multiple objects. For example, the terms "first node" and "second node" are merely used to facilitate the description of new parameters in different implementations and do not indicate differences in their execution operations, importance, structure, etc.

[0281] In the above embodiments, the term "when" can be interpreted to mean "if...", "before...", "determining...", or "detecting...", depending on the context. The above are merely optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the concepts and principles of the present application shall be included within the scope of protection of the present application.

[0282] Those skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or by a program to instruct the relevant hardware, and the program may be stored in a computer-readable storage medium, which may be a read-only memory, a disk, or an optical disk, etc.

Claims

1. A communication method, characterized in that: The method comprises: receiving at least one reference signal from a network device; Send activation information to the network device, wherein the activation information is used to indicate the activation state of the at least one reference signal, or the activation information is used to indicate the activation state of a transmission configuration indication state TCI state corresponding to the at least one reference signal.

2. The method according to claim 1, characterized in that The activation state is used to indicate whether the at least one reference signal has completed time-frequency tracking, or to indicate whether the TCI state corresponding to the at least one quasi-coordinated type QCL type D reference signal can directly perform TCI state indication, or to indicate whether the at least one reference signal is activated, or to indicate whether the TCI state corresponding to the at least one reference signal of QCL Type D can perform data transmission, or to indicate whether the terminal stores the QCL attribute of the synchronization signal block SSB associated with the at least one reference signal, or to indicate whether additional SSB reception is required when the at least one reference signal is used for beam indication, or to indicate whether the at least one reference signal has completed synchronization.

3. The method according to claim 1 or 2, characterized in that The method further comprises: Sending a measurement result of the at least one reference signal to the network device, wherein the measurement result includes one or more of an index of the at least one reference signal, a signal quality corresponding to the at least one reference signal, and capability index information corresponding to the at least one reference signal.

4. The method according to any one of claims 1 to 3, characterized in that The activation information is indicated by the first field.

5. The method according to any one of claims 1 to 3, characterized in that The activation information is indicated by at least one second field, the at least one second field is associated with the at least one reference signal, and each second field is used to indicate the activation status of a reference signal, or the at least one second field is associated with at least one TCI state, and each second field is used to indicate the activation status of a TCI state.

6. The method according to claim 1, characterized in that The activation information is used to indicate an index of the at least one reference signal, and the at least one reference signal has been activated, or the activation information is used to indicate an index of the at least one TCI state, and the at least one TCI state has been activated.

7. The method according to any one of claims 1 to 6, characterized in that The method further comprises: The activation state of at least one reference signal or the activation state of at least one TCI state takes effect when one or more of the following preset conditions are met, where the preset conditions include a first time period after the terminal reports the activation information and a second time period after the terminal receives feedback information from the network device, where the feedback information is information sent by the network device in response to the activation information.

8. The method according to any one of claims 1 to 7, characterized in that The method further comprises: First downlink control information is received from the network device, wherein the first downlink control information includes a third field, and the third field is used to indicate one of at least one reference signal or at least one TCI state activated corresponding to a TCI field.

9. The method according to any one of claims 1 to 7, characterized in that The method further comprises: First downlink control information is received from the network device, wherein the first downlink control information includes a fourth field, and the fourth field is used to indicate one of at least one activated reference signal or at least one TCI state.

10. The method according to claim 8 or 9, characterized in that The method further comprises: Perform uplink transmission or downlink transmission of data according to the TCI state or reference signal indicated by the first downlink control information.

11. The method according to claim 10, characterized in that The method further comprises: Determine a path loss reference signal for uplink transmission, where the path loss reference signal is one or more of the following: The reference signal indicated by the first downlink control information and the reference signal indicated by the first downlink control information are path loss reference signals that satisfy a QCL type D relationship.

12. The method according to any one of claims 1 to 11, characterized in that The method further comprises: The transmit power of the uplink transmission is determined according to the reference power control parameters, wherein the reference power control parameters include the power control parameters pre-configured by the network device, the basic power p0 configured by the network device, the path loss adjustment factor alpha, the physical uplink shared channel PUSCH, the sounding reference signal SRS, the power control parameter with the minimum or maximum index of the physical uplink control channel PUCCH, and one or more of the power control parameters associated with the TCI state associated with the uplink transmission.

13. A communication method, characterized in that: The method comprises: receiving at least one reference signal from a network device, wherein the at least one reference signal is activated when one or more preset conditions are met; Sending a measurement result of at least one reference signal to the network device.

14. The method according to claim 13, characterized in that The preset conditions include: The RSRP / SINR of the reference signal is greater than the RSRP / SINR of the current beam. The RSRP / SINR of the reference signal is greater than an offset parameter of the RSRP / SINR of the current beam, The RSRP / SINR of the reference signal is greater than a first threshold, The RSRP / SINR of the reference signal is greater than the RSRP / SINR of the reference signal corresponding to QCL type D of any currently activated TCI state, The RSRP / SINR of the reference signal is greater than an offset parameter of the RSRP / SINR of the reference signal corresponding to QCL type D of any currently activated TCI state, The RSRP / SINR of the reference signal is greater than the RSRP / SINR of the reference signal RS corresponding to QCL type D of all currently activated TCI states, The RSRP / SINR of the reference signal is greater than an offset parameter of the maximum RSRP / SINR of the RS of QCL type D corresponding to the currently activated TCI state, The sending of the measurement result of the at least one reference signal is initiated by the terminal or triggered by an event.

15. A communication method, characterized in that: The method comprises: sending at least one reference signal to a terminal; Receive activation information from the terminal, wherein the activation information is used to indicate the activation state of the at least one reference signal, or the activation information is used to indicate the activation state of the at least one transmission configuration indication state TCI state.

16. The method according to claim 15, characterized in that The activation state is used to indicate whether the at least one reference signal has completed time-frequency tracking, or to indicate whether the TCI state corresponding to the at least one quasi-coordinated type QCL type D reference signal can directly perform TCI state indication, or to indicate whether the at least one reference signal is activated, or to indicate whether the TCI state corresponding to the at least one reference signal of QCL Type D can perform data transmission, or to indicate whether the terminal stores the QCL attribute of the synchronization signal block SSB associated with the at least one reference signal, or to indicate whether additional SSB reception is required when the at least one reference signal is used for beam indication, or to indicate whether the at least one reference signal has completed synchronization.

17. The method according to claim 15 or 16, characterized in that The method further comprises: Receive a measurement result of the at least one reference signal from the terminal, wherein the measurement result includes one or more of an index of the at least one reference signal, a signal quality corresponding to the at least one reference signal, and capability index information corresponding to the at least one reference signal.

18. The method according to any one of claims 15 to 17, characterized in that: The activation information is indicated by the first field.

19. The method according to any one of claims 15 to 17, characterized in that: The activation information is indicated by at least one second field, the at least one second field is associated with the at least one reference signal, and each second field is used to indicate the activation status of a reference signal, or the at least one second field is associated with at least one TCI state, and each second field is used to indicate the activation status of a TCI state.

20. The method according to claim 15, wherein The activation information is used to indicate an index of the at least one reference signal, and the at least one reference signal has been activated, or the activation information is used to indicate an index of the at least one TCI state, and the at least one TCI state has been activated.

21. The method according to any one of claims 15 to 20, characterized in that The method further comprises: Feedback information is sent to the terminal, wherein the feedback information is information sent by the network device in response to the activation information.

22. The method according to any one of claims 15 to 21, characterized in that The method further comprises: First downlink control information is sent to the terminal, wherein the first downlink control information includes a third field, and the third field is used to indicate one of at least one reference signal or at least one TCI state activated corresponding to a TCI field.

23. The method according to any one of claims 15 to 21, characterized in that The method further comprises: First downlink control information is sent to the terminal, where the first downlink control information includes a fourth field, and the fourth field is used to indicate one of at least one activated reference signal or at least one TCI state.

24. A communication method, characterized in that: The method comprises: Sending at least one reference signal to a terminal, wherein the at least one reference signal is activated when one or more preset conditions are met; A measurement result of at least one reference signal is received from the terminal.

25. The method according to claim 24, characterized in that The preset conditions include: The RSRP / SINR of the reference signal is greater than the RSRP / SINR of the current beam. The RSRP / SINR of the reference signal is greater than an offset parameter of the RSRP / SINR of the current beam, The RSRP / SINR of the reference signal is greater than a first threshold, The RSRP / SINR of the reference signal is greater than the RSRP / SINR of the reference signal corresponding to QCL type D of any currently activated TCI state, The RSRP / SINR of the reference signal is greater than an offset parameter of the RSRP / SINR of the reference signal corresponding to QCL type D of any currently activated TCI state, The RSRP / SINR of the reference signal is greater than the RSRP / SINR of the RS of QCL type D corresponding to all currently activated TCI states, The RSRP / SINR of the reference signal is greater than an offset parameter of the maximum RSRP / SINR of the RS of QCL type D corresponding to the currently activated TCI state, The sending of the measurement result of the at least one reference signal is initiated by the terminal or triggered by an event.

26. A communication device, characterized in that: The communication device includes a module for implementing the method according to any one of claims 1 to 14.

27. A communication device, characterized in that: The communication device includes a module for implementing the method according to any one of claims 15-25.

28. A communication device, characterized in that: The communication device includes a processor; When the processor calls the computer program or instruction in the memory, the method according to any one of claims 1 to 14 is implemented.

29. A communication device, characterized in that: The communication device includes a processor; When the processor calls the computer program or instruction in the memory, the method according to any one of claims 15 to 25 is implemented.

30. A communication system, characterized in that: The communication system comprises the communication device according to claim 26 and the communication device according to claim 27; or The communication system includes the communication device according to claim 28 and the communication device according to claim 29.

31. A computer-readable storage medium, characterized in that The computer-readable storage medium is used to store instructions or computer programs; The instructions or the computer program are executed to implement the method according to any one of claims 1 to 25.

32. A computer program product, characterized in that include: instructions or computer programs; The instructions or the computer program are executed to implement the method according to any one of claims 1 to 25.

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