A method and device for triggering TRS activation, terminal equipment, and network equipment

Abstract

An embodiment of the present application provides a method and apparatus for activating TRS, a terminal device, and a network device. The method includes: the terminal device receives a first activation instruction sent by the network device, the first activation instruction is used to activate TRS, and the TRS is used for fast activation of Scell; the terminal device measures TRS, wherein the measured TRS is used for time and frequency synchronization with the Scell.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of mobile communication technology, and specifically to a method and apparatus for activating a Tracking Reference Signal (TRS), a terminal device, and a network device. Background Art

[0002] The secondary cell (Scell) is configured through dedicated radio resource control (RRC) signaling. The initial configuration state of the Scell ​​is inactive, in which data cannot be sent or received. The Scell ​​can only be sent or received after being activated by the media access control control element (MAC CE).

[0003] Currently, there is a delay from activating a Scell ​​through MAC CE to actually transmitting data, which includes the reception delay of the synchronization signal block (SSB). However, considering that the length of the SSB cycle may be large, this will affect the time when the Scell ​​is actually activated (that is, the time when data can be transmitted). Therefore, TRS can be used to assist the terminal device to achieve the purpose of quickly activating the Scell. However, how to activate TRS is a problem that needs to be clarified. Summary of the invention

[0004] The embodiments of the present application provide a method and apparatus for activating a TRS, a terminal device, and a network device.

[0005] The method for activating TRS provided in the embodiment of the present application includes:

[0006] The terminal device receives a first activation instruction sent by the network device, where the first activation instruction is used to activate a TRS, and the TRS is used for fast activation of the Scell;

[0007] The terminal device measures the TRS, wherein the measured TRS is used for time and frequency synchronization with the Scell.

[0008] The method for activating TRS provided in the embodiment of the present application includes:

[0009] The network device sends a first activation instruction to the terminal device, where the first activation instruction is used to activate a TRS, and the TRS is used for fast activation of the Scell;

[0010] The network device sends a TRS, wherein the TRS is used for the terminal device to perform time and frequency synchronization with the Scell.

[0011] The device for triggering TRS activation provided in an embodiment of the present application is applied to a terminal device, and the device includes:

[0012] A receiving unit, configured to receive a first activation instruction sent by a network device, wherein the first activation instruction is used to activate a TRS, and the TRS is used for fast activation of a Scell;

[0013] The measuring unit is used to measure the TRS, wherein the measured TRS is used to perform time and frequency synchronization with the Scell.

[0014] The device for triggering TRS activation provided in an embodiment of the present application is applied to a network device, and the device includes:

[0015] The sending unit is used to send a first activation instruction to the terminal device, where the first activation instruction is used to activate the TRS, and the TRS is used for fast activation of the Scell; send the TRS, where the TRS is used for the terminal device to perform time and frequency synchronization with the Scell.

[0016] The terminal device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above-mentioned TRS activation method.

[0017] The network device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above-mentioned TRS activation method.

[0018] The chip provided in the embodiment of the present application is used to implement the above-mentioned TRS activation method.

[0019] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned TRS activation method.

[0020] The computer-readable storage medium provided in the embodiment of the present application is used to store a computer program, which enables a computer to execute the above-mentioned TRS activation method.

[0021] The computer program product provided in the embodiment of the present application includes computer program instructions, which enable a computer to execute the above-mentioned TRS activation method.

[0022] The computer program provided in the embodiment of the present application, when executed on a computer, enables the computer to execute the above-mentioned TRS activation method.

[0023] Through the above technical solution, after the terminal device receives the first activation instruction sent by the network device, it considers that the TRS is activated, and thus starts to measure the TRS. After the network device sends the first activation instruction to the terminal device, it considers that the TRS is activated, and thus starts to send the TRS. This makes the sending and receiving of the TRS effective, and does not waste resources or the power of the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

[0026] Figure 2-1 Schematic diagram of Scell ​​activation and deactivation of MAC CE provided in the embodiment of the present application Figure 1 ;

[0027] Figure 2-2 Schematic diagram 2 of Scell ​​activation and deactivation MAC CE provided in an embodiment of the present application;

[0028] Figure 3 is a schematic diagram of Scell ​​activation delay provided in an embodiment of the present application;

[0029] Figure 4 Schematic diagram of a TRS activation method provided in an embodiment of the present application;

[0030] Figure 5-1 This is a schematic diagram of activating TRS MAC CE provided in an embodiment of the present application Figure 1 ;

[0031] Figure 5-2 Schematic diagram 2 of MAC CE for activating TRS provided in an embodiment of the present application;

[0032] Figure 5-3 This is a schematic diagram of activating TRS MAC CE provided in an embodiment of the present application Figure 3 ;

[0033] Figure 6-1 This is a schematic diagram of activating TRS MAC CE provided in an embodiment of the present application Figure 4 ;

[0034] Figure 6-2Schematic diagram 5 of MAC CE for activating TRS provided in an embodiment of the present application;

[0035] Figure 6-3 Schematic diagram 6 of MAC CE for activating TRS provided in an embodiment of the present application;

[0036] Figure 6-4 This is a schematic diagram of activating TRS MAC CE provided in an embodiment of the present application Figure 7 ;

[0037] Figure 6-5 This is a schematic diagram of activating TRS MAC CE provided in an embodiment of the present application Figure 8 ;

[0038] Figure 7 The structure of the device for triggering TRS activation provided in the embodiment of the present application is shown in FIG. Figure 1 ;

[0039] Figure 8 Schematic diagram 2 of the structure of the device for triggering TRS activation provided in an embodiment of the present application;

[0040] Fig. 9 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0041] Fig.10 is a schematic structural diagram of a chip according to an embodiment of the present application;

[0042] Fig.11 It is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, 5G communication system or future communication system, etc.

[0045] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1As shown. The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or referred to as a communication terminal device, terminal device). The network device 110 may provide communication coverage for a specific geographical area, and may communicate with terminal devices located within the coverage area. Optionally, the network device 110 may be an evolved base station (eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future communication system, etc.

[0046] The communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110. As used herein, "terminal device" includes but is not limited to connection via a wired line, such as via a Public Switched Telephone Networks (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection; and / or another data connection / network; and / or via a wireless interface, such as, for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and / or a device of another terminal device configured to receive / send communication signals; and / or an Internet of Things (IoT) device. A terminal device configured to communicate via a wireless interface may be referred to as a "wireless communication terminal device", a "wireless terminal device" or a "mobile terminal device". Examples of mobile terminal devices include, but are not limited to, satellite or cellular telephones; Personal Communications System (PCS) terminal devices that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; PDAs that may include radiotelephones, pagers, Internet / intranet access, Web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. Terminal devices may refer to access terminal devices, user equipment (UE), subscriber units, subscriber stations, mobile stations, mobile stations, remote stations, remote terminal devices, mobile devices, user terminal devices, terminal devices, wireless communication devices, user agents, or user devices. The access terminal device can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

[0047] Optionally, terminal devices 120 may perform device to device (D2D) communication.

[0048] Optionally, the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.

[0049] Figure 1 One network device and two terminal devices are shown exemplarily. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0050] Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0051] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1 Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 may be the specific devices described above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0052] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0053] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions related to the embodiments of the present application are described below.

[0054] With the pursuit of speed, latency, high-speed mobility, energy efficiency and the diversity and complexity of services in future life, the Third Generation Partnership Project (3GPP) rd The 3rd Generation Partnership Project (3GPP) international standard organization has begun to develop 5G. The main application scenarios of 5G are: enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine-type communications (mMTC).

[0055] On the one hand, eMBB still aims at users to obtain multimedia content, services and data, and its demand is growing rapidly. On the other hand, since eMBB may be deployed in different scenarios, such as indoors, in urban areas, and in rural areas, its capabilities and requirements vary greatly, so it cannot be generalized and must be analyzed in detail in combination with specific deployment scenarios. Typical applications of URLLC include: industrial automation, power automation, remote medical operations (surgery), traffic safety, etc. Typical features of mMTC include: high connection density, small data volume, latency-insensitive services, low cost and long service life of modules, etc.

[0056] In the early days of NR deployment, complete NR coverage was difficult to obtain, so the typical network coverage was wide-area LTE coverage and NR island coverage. In addition, a large number of LTEs are deployed below 6GHz, and there is little spectrum below 6GHz available for 5G. Therefore, NR must study spectrum applications above 6GHz, but high-frequency bands have limited coverage and fast signal fading. At the same time, in order to protect mobile operators' early investments in LTE, a tight interworking working mode between LTE and NR was proposed.

[0057] NR can also be deployed independently. NR will be deployed at high frequencies in the future. In order to improve coverage, in 5G, a beam sweeping mechanism is introduced to meet coverage requirements (trading space for coverage and time for space). After the introduction of beam sweeping, synchronization signals need to be sent in each beam direction. The 5G synchronization signal is given in the form of a synchronization signal block (SS / PBCH block, SSB), which includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH). The 5G synchronization signal appears periodically in the time domain in the form of a synchronization signal burst set (SS burst set).

[0058] The actual number of beams transmitted by each cell is determined by the network configuration, but the frequency of the cell determines the maximum number of beams that can be configured, as shown in Table 1 below.

[0059] Frequency range L (maximum number of beams) up to 3(2.4)GHz 4 3(2.4)GHz—6GHz 8 6GHz—52.6GHz 64

[0060] Table 1

[0061] For SSB-based measurements, the actual transmission position of SSB in each cell may be different, and the SS burst set period may also be different. Therefore, in order to save energy during the measurement process, the network side configures the UE with SSB measurement timing configuration (SS / PBCH block measurement timing configuration, SMTC), and the UE only needs to perform measurements within the SMTC window.

[0062] In 5G, the maximum channel bandwidth can be 400MHZ (called wideband carrier), which is very large compared to the maximum 20M bandwidth of LTE. If the terminal device keeps working on the wideband carrier, the power consumption of the terminal device is very large. Therefore, it is recommended that the radio frequency (RF) bandwidth of the terminal device can be adjusted according to the actual throughput of the terminal device. To this end, the concept of bandwidth part (Band Width Part, BWP) is introduced. The motivation of BWP is to optimize the power consumption of the terminal device. For example, if the rate of the terminal device is very low, a smaller BWP can be configured for the terminal device. If the rate requirement of the terminal device is very high, a larger BWP can be configured for the terminal device. If the terminal device supports high speed, or works in carrier aggregation (CA) mode, multiple BWPs can be configured for the terminal device. Another purpose of BWP is to trigger the coexistence of multiple basic parameter sets (numerology) in a cell, such as BWP1 corresponding to numerology1, and BWP2 corresponding to numerology2.

[0063] A terminal device can be configured with up to 4 uplink BWPs and up to 4 downlink BWPs through Radio Resource Control (RRC) dedicated signaling, but only one uplink BWP and downlink BWP can be activated at the same time. In the RRC dedicated signaling, the first activated BWP among the configured BWPs can be indicated. At the same time, when the terminal device is in the connected state, it can also switch between different BWPs through downlink control information (DCI). When a carrier in an inactive state enters an activated state, the first activated BWP is the first activated BWP configured in the RRC dedicated signaling. The configuration parameters of each BWP include:

[0064] - Subcarrier Spacing;

[0065] -cyclicPrefix;

[0066] -The first physical resource block (PRB) of the BWP and the number of consecutive PRBs (locationAndBandwidth);

[0067] -BWP identification (bwp-Id);

[0068] -BWP common configuration parameters and dedicated configuration parameters (bwp-Common, bwp-Dedicated).

[0069] When performing Radio Link Monitor (RLM) in the process, the terminal device only executes on the activated BWP. No operation is required on the inactivated BWP. When switching between different BWPs, there is no need to reset the RLM-related timers and counters. For Radio Resource Management (RRM) measurements, no matter which activated BWP the terminal device sends or receives data on, it does not affect the RRM measurement. For Channel Quality Indication (CQI) measurements, the terminal device only needs to execute on the activated BWP.

[0070] When a carrier is deactivated and then activated through a Media Access Control Control Element (MAC CE), the initial first activated BWP is the first activated BWP configured in the RRC dedicated signaling.

[0071] The value of the BWP identifier (BWP id) in the RRC dedicated signaling is 0 to 4, and the BWP with a BWP identifier of 0 is the initial BWP by default.

[0072] In DCI, the BWP indicator is 2 bits, as shown in Table 2 below. If the number of configured BWPs is less than or equal to 3, BWP indicator = 1, 2, 3 correspond to BWP id = 1, 2, 3 respectively. If the number of BWPs is 4, BWP indicator = 0, 1, 2, 3 correspond to the BWPs configured according to the sequential index. In addition, the network side uses consecutive BWP ids when configuring BWPs.

[0073]

[0074] Table 2

[0075] In order to meet the demand for high rates, 5G also supports carrier aggregation (CA) technology. CA enables the NR system to support a larger bandwidth and achieve a higher system peak rate by jointly scheduling and using resources on multiple component carriers (CC). According to the continuity of the aggregated carriers in the spectrum, it can be divided into continuous carrier aggregation and non-continuous carrier aggregation; according to whether the aggregated carriers are in the same frequency band, it can be divided into intra-band carrier aggregation and inter-band carrier aggregation.

[0076] In CA, there is one and only one primary cell component (PCC), which provides RRC signaling connection, non-access stratum (NAS) functions, security, etc. The physical uplink control channel (PUCCH) is on the PCC and only exists on the PCC. In CA, there can be one or more secondary cell components (SCC), which only provide additional wireless resources. PCC and SCC are collectively referred to as service cells, where the cell on the PCC is the primary cell (Pcell) and the cell on the SCC is the secondary cell (Scell). The standard also stipulates that a maximum of 5 aggregated carriers are supported, that is, the maximum bandwidth after aggregation is 100MHZ, and the aggregated carriers belong to the same base station. All aggregated carriers use the same cell-radio network temporary identifier (C-RNTI), and the base station implements to ensure that the C-RNTI does not conflict in the cell where each carrier is located. Since both asymmetric carrier aggregation and symmetric carrier aggregation are supported, the aggregated carrier must have a downlink carrier and may not have an uplink carrier. In addition, the primary carrier cell must have its own physical downlink control channel (PDCCH) and PUCCH, and only the primary carrier cell has PUCCH, while other secondary carrier cells may have PDCCH.

[0077] The Scell ​​is configured through RRC dedicated signaling. The initial configuration state is inactive, in which data cannot be sent or received. Then the Scell ​​is activated through MAC CE to send or receive data. Figure 2-1 and Figure 2-2 As shown, in Figure 2-1In the Scell ​​activation / deactivation MAC CE, the Scell ​​Activation / Deactivation MAC CE includes 1 byte, which controls the status of 7 Scells. Figure 2-2 In the Scell ​​activation / deactivation MAC CE, there are 4 bytes to control the status of 31 Scells, among which C i represents the state of the Scell ​​with serving cell index i, C i If set to 1, the corresponding Scell ​​is in an inactive state (i.e., deactivated state). i A setting of 0 indicates that the corresponding Scell ​​is in an activated state.

[0078] Deactivating MAC CE through Scell ​​activation requires a delay from the activation of a Scell ​​to the actual transmission of data, such as Figure 3 As shown, after the terminal device receives the Scell ​​activation / deactivation MAC CE, there is a T HARQ The HARQ feedback delay (the HARQ feedback refers to the HARQ feedback for Scell ​​activation and deactivation MAC CE), and then there is a 3ms Scell ​​activation and deactivation MAC CE application delay. At this point, the Scell ​​is considered to be activated. In order to actually transmit data, the terminal device needs to detect the first SSB on the Scell ​​and use the SSB to achieve time and frequency synchronization with the Scell, which will have a T FirstSSB After that, there is a 2ms SSB processing and RF preparation delay, and then there is a T CSI_Reporting CSI report delay. Among the above-mentioned delay factors, considering that the length of the SMTC (i.e., the time window for detecting SSB) cycle may be relatively large, which will affect the time when the Scell ​​is actually activated (i.e., the time when data can actually be transmitted), TRS is introduced to assist the terminal device to quickly activate the Scell. How to activate TRS is an issue that needs to be clarified. To this end, the following technical solutions of the embodiments of the present application are proposed.

[0079] It should be noted that the "network device" in the embodiment of the present application may be a base station, such as a gNB.

[0080] Figure 4 : is a flow chart of the method for activating TRS provided in the embodiment of the present application, such as Figure 4 As shown, the method for activating TRS comprises the following steps:

[0081] Step 401: a network device sends a first activation instruction to a terminal device, and the terminal device receives the first activation instruction sent by the network device, where the first activation instruction is used to activate a TRS, and the TRS is used for fast activation of a Scell.

[0082] In the embodiment of the present application, before the network device sends the first activation instruction to the terminal device, that is, before the terminal device receives the first activation instruction sent by the network device, the method further includes:

[0083] The network device sends a first RRC signaling to the terminal device, and the terminal device receives the first RRC signaling sent by the network device, where the first RRC signaling includes TRS configuration information, and the TRS configuration information includes first indication information, where the first indication information is used to indicate the type of TRS and / or the purpose of TRS, and the type of TRS and / or the purpose of TRS are used to determine that the TRS is used for Scell ​​fast activation.

[0084] Further, optionally, the TRS configuration information further includes at least one of the following:

[0085] second indication information, where the second indication information is used to indicate the number of transmissions after the TRS is activated;

[0086] third indication information, where the third indication information is used to indicate a sending interval of the TRS;

[0087] Fourth indication information, where the fourth indication information is used to indicate a time offset.

[0088] In an embodiment of the present application, the first RRC signaling includes a non-zero power CSI-RS resource set configuration and a CSI resource configuration, and the TRS configuration information is configured in the non-zero power CSI-RS resource set configuration or in the CSI resource configuration.

[0089] The following describes how to configure TRS configuration information with reference to specific examples.

[0090] In one example, TRS configuration information is configured through dedicated RRC signaling (i.e., the first RRC signaling), and the type of TRS and / or the purpose of TRS (i.e., the first indication information) are configured in the dedicated RRC signaling. The type of TRS and / or the purpose of TRS are used to indicate whether TRS is used for Scell ​​fast activation or for other purposes (e.g., time-frequency tracking of channels). Optionally, the dedicated RRC signaling can also configure the number of times TRS is sent after activation and / or the sending interval of TRS (called trs-Interval). The measurement unit of the trs-Interval value can be milliseconds (ms) or the number of time slots (slots). If the measurement unit of the trs-Interval value is the number of slots, the length of the slot is consistent with the slot length in units of the subcarrier spacing (SCS) of TRS. Optionally, the value of trs-Interval should be less than 10ms. In specific implementation, refer to Tables 3-1 and 3-2 below. The structural hierarchy of the configuration information contained in the dedicated RRC signaling is as follows:

[0091] RRCReconfiguration→

[0092] Cell Group Configuration (CellGroupConfig) →

[0093] ServingCellConfig→

[0094] CSI measurement configuration (csi-MeasConfig) →

[0095] Non-zero power CSI-RS resource set configuration (NZP-CSI-RS-ResourceSet).

[0096]

[0097]

[0098] Table 3-1

[0099]

[0100] Table 3-2

[0101] In an optional method, the TRS configuration information is configured in NZP-CSI-RS-ResourceSet, refer to the following Table 4-1, where trs-Type or trs-Purpose represents the first indication information, and there can be three implementation methods, trs-Amount represents the second indication information, trs-Interval represents the third indication information, and offset represents the fourth indication information.

[0102]

[0103]

[0104] Table 4-1

[0105] In an optional method, the TRS configuration information is configured in CSI-ResourceConfig, refer to the following Table 4-2, where trs-Type or trs-Purpose represents the first indication information, and there can be three implementation methods, trs-Amount represents the second indication information, trs-Interval represents the third indication information, and offset represents the fourth indication information.

[0106]

[0107] Table 4-2

[0108] Step 402: The network device sends a TRS, and the terminal device measures the TRS, wherein the measured TRS is used for time and frequency synchronization with the Scell.

[0109] In the embodiment of the present application, the first activation instruction is used to activate TRS, and the activation time of TRS refers to the time when the terminal device starts to measure TRS, or the activation time of TRS refers to the time when the network device starts to send TRS. The implementation of the first activation instruction and how to define "the time to start measuring TRS" or "the time to start sending TRS" are described below.

[0110] Method 1

[0111] The first activation instruction is a first MAC CE, and the first MAC CE is a Scell ​​activation and deactivation MAC CE.

[0112] For a terminal device, if the Scell ​​meets the first condition, the terminal device starts measuring the TRS at a first time. The definition of the first time is described below.

[0113] 1) The first time is the time when the terminal device receives the first MAC CE; or,

[0114] 2) The first time is the time when the terminal device receives the PDSCH corresponding to the first MAC CE; or,

[0115] 3) The first time is the time when the terminal device receives the first MAC CE plus a time offset; or,

[0116] 4) The first time is the time when the terminal device receives the PDSCH corresponding to the first MAC CE plus a time offset; or,

[0117] 5) The first time is the time when the terminal device feeds back the HARQ ACK information corresponding to the first MAC CE; or,

[0118] 6) The first time is the time when the terminal device feeds back the HARQ ACK information corresponding to the first MAC CE plus the time offset.

[0119] In the above solution, the value of the time offset is a fixed value or is configured by the network device. Further, optionally, when the value of the time offset is a fixed value, the value of the time offset is associated with the capability of the terminal device.

[0120] The technical solution of the embodiment of the present application is illustrated below with reference to specific application examples.

[0121] In one example, a terminal device receives a Scell ​​activation / deactivation MAC CE, i.e., a Scell ​​Activation / Deactivation MAC CE. For a certain Scell, if the Scell ​​meets a first condition, the terminal device starts measuring the TRS at a first time, and performs time-frequency synchronization with the Scell ​​based on the measured TRS, thereby realizing rapid activation of the Scell. Here, the first time has the following definitions:

[0122] —The time when the terminal device receives the Scell ​​activation / deactivation MAC CE, that is, the time when the MAC layer of the terminal device decodes the Scell ​​activation / deactivation MAC CE or the time when the physical layer of the terminal device receives the PDSCH corresponding to the Scell ​​activation / deactivation MAC CE; or,

[0123] —The time when the terminal device completes feeding back the HARQ ACK information of the Scell ​​activation and deactivation MAC CE, that is, the time when the terminal device completes feeding back the HARQ ACK information of the TB where the Scell ​​activation and deactivation MAC CE is located, or the time when the terminal device completes feeding back the HARQ ACK information of the PDSCH corresponding to the Scell ​​activation and deactivation MAC CE.

[0124] The first time may also be a time offset (offset) added to the above time, and the value of this offset may be a fixed value or a value configured on the network side. If it is a fixed value, the fixed value may be a fixed value related to the capability of the terminal device, for example, the fixed values ​​corresponding to capability1 and capability2 in the UE processing capability are different, for example, the fixed values ​​(1, 2) or (2, 3) correspond to capability 1 and capability 2 respectively, and the value measurement unit of the offset may be ms or the number of slots. If it is the number of slots, the length of the slot is consistent with the slot length in the SCS unit of the PDSCH where the MAC CE is located.

[0125] For the network device, if the Scell ​​meets the first condition, the network device starts sending the TRS at the first time. The definition of the first time is described below.

[0126] 1) The first time is the time when the network device finishes sending the first MAC CE; or,

[0127] 2) The first time is the time when the network device finishes sending the PDSCH corresponding to the first MAC CE; or,

[0128] 3) The first time is the time when the network device finishes sending the first MAC CE plus a time offset; or,

[0129] 4) The first time is the time when the network device finishes sending the PDSCH corresponding to the first MAC CE plus a time offset; or,

[0130] 5) The first time is the time when the network device receives the HARQ ACK information corresponding to the first MAC CE; or,

[0131] 6) The first time is the time when the network device receives the HARQ ACK information corresponding to the first MAC CE plus a time offset.

[0132] In the above solution, the value of the time offset is a fixed value or is configured by the network device. Further, optionally, when the value of the time offset is a fixed value, the value of the time offset is associated with the capability of the terminal device.

[0133] The technical solution of the embodiment of the present application is illustrated below with reference to specific application examples.

[0134] In an example, the base station sends Scell ​​activation / deactivation MAC CEs, that is, Scell ​​Activation / Deactivation MAC CEs. For a certain Scell, if the Scell ​​meets the first condition, the base station starts sending TRS at the first time. Here, the first time has the following definitions:

[0135] —The time when the base station finishes sending the Scell ​​activation and deactivation MAC CE, that is, the time when the base station finishes sending the PDSCH corresponding to the Scell ​​activation and deactivation MAC CE;

[0136] —The time when the base station receives the HARQ ACK information of the Scell ​​activation deactivation MAC CE, that is, the time when the base station receives the HARQ ACK information of the TB where the Scell ​​activation deactivation MAC CE is located or the time when the base station receives the HARQ ACK information of the PDSCH corresponding to the Scell ​​activation deactivation MAC CE.

[0137] The first time may also be a time offset (offset) added to the above time, and the value of this offset may be a fixed value or a value configured on the network side. If it is a fixed value, the fixed value may be a fixed value related to the capability of the terminal device, for example, the fixed values ​​corresponding to capability1 and capability2 in the UE processing capability are different, for example, the fixed values ​​(1, 2) or (2, 3) correspond to capability 1 and capability 2 respectively, and the value measurement unit of the offset may be ms or the number of slots. If it is the number of slots, the length of the slot is consistent with the slot length in the SCS unit of the PDSCH where the MAC CE is located.

[0138] In the above solution, the Scell ​​satisfies the first condition, including at least one of the following:

[0139] I) Scell ​​changes from deactivated state to activated state;

[0140] Here, the Scell ​​needs to be activated from a deactivated state, so that there is a need to perform time and frequency synchronization with the Scell, and thus there is a need to activate the TRS.

[0141] II) The first active BWP of the Scell ​​is not set as the dormant BWP;

[0142] Here, the firstActiveDownlinkBWP-Id of the Scell ​​is not set to the dormant BWP. Here, firstActiveDownlinkBWP-Id is the identifier of the first activated BWP. After the Scell ​​enters the activated state, it will enter the first activated BWP configured by RRC signaling. Only when the first activated BWP is not the dormant BWP, data transmission will be performed on the first activated BWP, and therefore there is a need to activate TRS.

[0143] III) First Activation of Scell ​​The BWP is configured with a TRS and this TRS is used for Scell ​​activation.

[0144] Here, the firstActiveDownlinkBWP-Id of the Scell ​​is configured with a TRS and the TRS is used for fast activation of the Scell. In this case, the prerequisite for activating the TRS is met.

[0145] It should be noted that the description of the first condition in the following embodiments can be understood with reference to the above scheme and will not be repeated here.

[0146] Method 2

[0147] The first activation instruction is a second RRC signaling, the second RRC signaling is used to configure at least one Scell, and the initial state of the at least one Scell ​​is an activated state.

[0148] For the terminal device, if the Scell ​​meets the first condition, the terminal device starts measuring the TRS at a second time. The definition of the second time is described below.

[0149] 1) The second time is the time when the terminal device receives the second RRC signaling; or,

[0150] 2) The second time is the time when the terminal device receives the PDSCH corresponding to the second RRC signaling; or,

[0151] 3) The second time is the time when the terminal device receives the second RRC signaling plus a time offset; or,

[0152] 4) The second time is the time when the terminal device receives the PDSCH corresponding to the second RRC signaling plus a time offset; or,

[0153] 5) The second time is the time when the terminal device receives and decodes the second RRC signaling; or,

[0154] 6) The second time is the time when the terminal device receives and decodes the second RRC signaling plus a time offset; or,

[0155] 7) The second time is the time when the first activated BWP of the Scell ​​is activated after the terminal device receives the second RRC signaling; or,

[0156] 8) The second time is the time when the first activated BWP of the Scell ​​is activated after the terminal device receives the second RRC signaling plus the time offset; or,

[0157] 9) The second time is the time when the terminal device feeds back the HARQ ACK information corresponding to the second RRC signaling; or,

[0158] 10) The second time is the time when the terminal device feeds back the HARQ ACK information corresponding to the second RRC signaling plus the time offset.

[0159] In the above solution, the value of the time offset is a fixed value or is configured by the network device. Further, optionally, when the value of the time offset is a fixed value, the value of the time offset is associated with the capability of the terminal device.

[0160] The technical solution of the embodiment of the present application is illustrated below with reference to specific application examples.

[0161] In one example, the terminal device receives a second RRC signaling (hereinafter referred to as RRC signaling), the RRC signaling configures at least one Scell, and the at least one Scell ​​configures an initial RRC state as an activated state. For a certain Scell, if the Scell ​​meets the first condition, the terminal device starts measuring the TRS at the second time, and performs time-frequency synchronization with the Scell ​​based on the measured TRS, thereby realizing rapid activation of the Scell. Here, the second time has the following definitions:

[0162] —The time when the terminal device receives the RRC signaling, that is, the time when the physical layer of the terminal device receives the PDSCH corresponding to the RRC signaling;

[0163] —The time when the terminal device receives and decodes the RRC signaling;

[0164] —The time when the terminal device receives RRC signaling and completes the activation of the BWP indicated by firstActiveDownlinkBWP-Id;

[0165] —The time when the terminal device receives the RRC signaling and feeds back the HARQ ACK information of the RRC signaling, that is, the time when the terminal device feeds back the HARQ ACK information of the TB where the RRC signaling is located or the time when the terminal device feeds back the HARQ ACK information of the PDSCH corresponding to the RRC signaling.

[0166] The second time may also be a time offset (offset) added to the above time, and the value of this offset may be a fixed value or a value configured on the network side. If it is a fixed value, the fixed value may be a fixed value related to the capability of the terminal device, for example, the fixed values ​​corresponding to capability1 and capability2 in the UE processing capability are different, for example, the fixed values ​​(1, 2) or (2, 3) correspond to capability 1 and capability 2 respectively, and the measurement unit of the offset value may be ms or the number of slots. If it is the number of slots, the length of the slot is consistent with the slot length in the SCS unit of the PDSCH where the RRC signaling is located.

[0167] For the network device, if the Scell ​​meets the first condition, the network device starts to send the TRS at the second time. The definition of the second time is described below.

[0168] 1) The second time is the time when the network device completes sending the second RRC signaling; or,

[0169] 2) The second time is the time when the network device finishes sending the PDSCH corresponding to the second RRC signaling; or,

[0170] 3) The second time is the time when the network device completes sending the second RRC signaling plus a time offset; or,

[0171] 4) The second time is the time when the network device finishes sending the PDSCH corresponding to the second RRC signaling plus a time offset; or,

[0172] 5) The second time is the time when the network device receives the HARQ ACK information corresponding to the second RRC signaling; or,

[0173] 6) The second time is the time when the network device receives the HARQ ACK information corresponding to the second RRC signaling plus a time offset.

[0174] In the above solution, the value of the time offset is a fixed value or is configured by the network device. Further, optionally, when the value of the time offset is a fixed value, the value of the time offset is associated with the capability of the terminal device.

[0175] The technical solution of the embodiment of the present application is illustrated below with reference to specific application examples.

[0176] In one example, the base station sends a second RRC signaling (hereinafter referred to as RRC signaling), the RRC signaling configures at least one Scell, and the initial RRC state of the at least one Scell ​​is configured as an activated state. For a certain Scell, if the Scell ​​meets the first condition, the network device starts to send TRS at a second time. Here, the second time has the following definitions:

[0177] —The time when the base station completes sending the RRC signaling, that is, the time when the physical layer of the base station completes sending the PDSCH corresponding to the RRC signaling;

[0178] —The time when the base station receives the HARQ ACK information of the RRC signaling after sending the RRC signaling, that is, the time when the base station receives the HARQ ACK information of the TB where the RRC signaling is located or the time when the base station receives the HARQ ACK information of the PDSCH corresponding to the RRC signaling.

[0179] The second time may also be a time offset (offset) added to the above time, and the value of this offset may be a fixed value or a value configured on the network side. If it is a fixed value, the fixed value may be a fixed value related to the capability of the terminal device, for example, the fixed values ​​corresponding to capability1 and capability2 in the UE processing capability are different, for example, the fixed values ​​(1, 2) or (2, 3) correspond to capability 1 and capability 2 respectively, and the measurement unit of the offset value may be ms or the number of slots. If it is the number of slots, the length of the slot is consistent with the slot length in the SCS unit of the PDSCH where the RRC signaling is located.

[0180] Method 3

[0181] The first activation instruction is a second MAC CE, and the second MAC CE is a TRS activation deactivation MAC CE.

[0182] For the terminal device, if the Scell ​​meets the first condition, the terminal device starts measuring the TRS at a third time. The definition of the third time is described below.

[0183] 1) The third time is the time when the terminal device receives the second MAC CE; or,

[0184] 2) The third time is the time when the terminal device receives the PDSCH corresponding to the second MAC CE; or,

[0185] 3) The third time is the time when the terminal device receives the second MAC CE plus a time offset; or,

[0186] 4) The third time is the time when the terminal device receives the PDSCH corresponding to the first MAC CE plus the time offset; or,

[0187] 5) The third time is the time when the terminal device feeds back the HARQ ACK information corresponding to the second MAC CE; or,

[0188] 6) The third time is the time when the terminal device feeds back the HARQ ACK information corresponding to the second MAC CE plus the time offset.

[0189] In the above solution, the value of the time offset is a fixed value or is configured by the network device. Further, optionally, when the value of the time offset is a fixed value, the value of the time offset is associated with the capability of the terminal device.

[0190] For the network device, if the Scell ​​meets the first condition, the network device starts to send the TRS at a third time. The definition of the third time is described below.

[0191] 1) The third time is the time when the network device finishes sending the second MAC CE; or,

[0192] 2) The third time is the time when the network device finishes sending the PDSCH corresponding to the second MAC CE; or,

[0193] 3) The third time is the time when the network device finishes sending the second MAC CE plus a time offset; or,

[0194] 4) The third time is the time when the network device finishes sending the PDSCH corresponding to the first MAC CE plus a time offset; or,

[0195] 5) The third time is the time when the network device receives the HARQ ACK information corresponding to the second MAC CE; or,

[0196] 6) The third time is the time when the network device receives the HARQ ACK information corresponding to the second MAC CE plus the time offset.

[0197] In the above solution, the value of the time offset is a fixed value or is configured by the network device. Further, optionally, when the value of the time offset is a fixed value, the value of the time offset is associated with the capability of the terminal device.

[0198] In the embodiment of the present application, the second MAC CE is different from the first MAC CE. The second MAC CE may also be referred to as a MAC CE for activating TRS (MAC CE for TRS), and the first MAC CE may also be referred to as a MAC CE for activating Scell ​​(MAC CE for Scell ​​activation) or a Scell ​​activation deactivation MAC CE.

[0199] The technical solution of the embodiment of the present application is illustrated below with reference to specific application examples.

[0200] In one example, for a certain Scell, if the Scell ​​meets the first condition, the terminal device starts measuring the TRS at a third time, and performs time-frequency synchronization with the Scell ​​based on the measured TRS, thereby realizing rapid activation of the Scell. Here, the third time has the following definitions:

[0201] —The time when the terminal device receives the second MAC CE (hereinafter referred to as MAC CE), that is, the time when the physical layer of the terminal device receives the PDSCH corresponding to the MAC CE;

[0202] —The time when the terminal device completes feeding back the HARQ ACK information of the MAC CE, that is, the time when the terminal device completes feeding back the HARQ ACK information of the TB where the MAC CE is located, or the time when the terminal device completes feeding back the HARQ ACK information of the PDSCH corresponding to the MAC CE.

[0203] The third time may also be a time offset (offset) added after the above time, and the value of this offset may be a fixed value or a value configured on the network side. If it is a fixed value, the fixed value may be a fixed value related to the capability of the terminal device, for example, the fixed values ​​corresponding to capability1 and capability2 in the UE processing capability are different, for example, the fixed values ​​(1, 2) or (2, 3) correspond to capability 1 and capability 2 respectively, and the value measurement unit of the offset may be ms or the number of slots. If it is the number of slots, the length of the slot is consistent with the slot length in the SCS unit of the PDSCH where the MAC CE is located.

[0204] In one example, for a certain Scell, if the Scell ​​meets the first condition, the base station starts sending the TRS at a third time. Here, the third time has the following definitions:

[0205] —The time when the base station completes sending the second MAC CE (hereinafter referred to as MAC CE), that is, the time when the physical layer of the base station completes sending the PDSCH corresponding to the MAC CE;

[0206] —The time when the base station receives the HARQ ACK information of the MAC CE, that is, the time when the base station receives the HARQ ACK information of the TB where the MAC CE is located or the time when the base station receives the HARQ ACK information of the PDSCH corresponding to the MAC CE.

[0207] The third time may also be a time offset (offset) added after the above time, and the value of this offset may be a fixed value or a value configured on the network side. If it is a fixed value, the fixed value may be a fixed value related to the capability of the terminal device, for example, the fixed values ​​corresponding to capability1 and capability2 in the UE processing capability are different, for example, the fixed values ​​(1, 2) or (2, 3) correspond to capability 1 and capability 2 respectively, and the value measurement unit of the offset may be ms or the number of slots. If it is the number of slots, the length of the slot is consistent with the slot length in the SCS unit of the PDSCH where the MAC CE is located.

[0208] In the embodiment of the present application, the second MAC CE is transmitted simultaneously with the first MAC CE; or, the second MAC CE is transmitted independently from the first MAC CE; wherein the first MAC CE is a Scell ​​activation / deactivation MAC CE. In an optional manner, when the second MAC CE is transmitted independently from the first MAC CE, the second MAC CE is transmitted when the HARQ ACK information corresponding to the first MAC CE is transmitted; or, the second MAC CE is transmitted before the HARQ ACK information corresponding to the first MAC CE is transmitted.

[0209] For example, MAC CE for TRS and MAC CE for Scell ​​activation can be multiplexed in one TB and sent simultaneously. Alternatively, MAC CE for TRS is sent before or when MAC CE for Scell ​​activation feeds back HARQ-ACK information.

[0210] The forms of the second MAC CE and the first MAC CE in the above solution are described below.

[0211] In the embodiment of the present application, the second MAC CE includes N1 bits, where N1 is a positive integer, and the N1 bits correspond one-to-one to N1 Scells. The value of each bit is used to indicate whether the Scell ​​corresponding to the bit activates TRS, and the TRS is used for fast activation of the Scell.

[0212] In the embodiment of the present application, the first MAC CE includes N2 bits, N2 is a positive integer greater than or equal to N1, the N2 bits correspond one-to-one to N2 serving cells, and the value of each bit is used to indicate whether the serving cell corresponding to the bit is activated.

[0213] In an optional manner, N1 is the number of serving cells.

[0214] In an optional manner, the N1 Scells are serving cells that meet the first condition among the N2 serving cells.

[0215] In an optional manner, the N1 bits are located after the N2 bits.

[0216] In the above solution, optionally, the N1 bits correspond one-to-one with the N1 Scells in order from low to high according to the serving cell indexes in order from small to large.

[0217] The technical solution of the embodiment of the present application is illustrated below with reference to specific application examples.

[0218] In one example, referring to Figure 5-1 If the number of Scells to be indicated or the maximum serving cell index is less than or equal to 7, the MAC CE in the left format is used, otherwise the MAC CE in the right format is used. The MAC CE here refers to the second MAC CE. i Indicates whether the Scell ​​with serving cell index i activates TRS. Optionally, C i A value of 1 indicates that the corresponding Scell ​​activates the TRS. This TRS is used for fast Scell ​​activation. i A value of 0 indicates that the corresponding Scell ​​does not activate TRS. i When the value is 0, the terminal device can use SSB or regular TRS as the synchronization signal when the Scell ​​is activated. The TRS activated by the Scell ​​is the TRS configured on the BWP indicated by the firstActiveDownlinkBWP-Id of the corresponding Scell.

[0219] In one example, referring to Figure 5-2 , based on the Scell ​​activation and deactivation MAC CE (i.e., the first MAC CE), the TRS activation and deactivation indication of the Scell ​​that meets the first condition is matched one by one in the order of the service cell index from small to large and the bit positions following the Scell ​​activation and deactivation MAC CE from low to high. The value of the corresponding bit position is 1, indicating that the corresponding Scell ​​activates TRS, which is used for Scell ​​fast activation, and the value of the corresponding bit position is 0, indicating that the corresponding Scell ​​does not activate TRS. Furthermore, when the value of the corresponding bit position is 0, the terminal device can use SSB or conventional TRS as the synchronization signal when the Scell ​​is activated. Among them, the TRS activated by the Scell ​​is the TRS configured on the BWP indicated by the firstActiveDownlinkBWP-Id of the corresponding Scell.

[0220] In one example, referring to Figure 5-3, the TRS activation and deactivation indication of the Scell ​​that meets the first condition is matched one by one according to the order of the service cell index from small to large and the order of the bits after the Scell ​​activation and deactivation MAC CE from low to high. The value of the corresponding bit is 1, indicating that the corresponding Scell ​​activates TRS, which is used for Scell ​​fast activation, and the value of the corresponding bit is 0, indicating that the corresponding Scell ​​does not activate TRS. Furthermore, when the value of the corresponding bit is 0, the terminal device can use SSB or conventional TRS as the synchronization signal when the Scell ​​is activated. Among them, the TRS activated by the Scell ​​is the TRS configured on the BWP indicated by the firstActiveDownlinkBWP-Id of the corresponding Scell.

[0221] Method 4

[0222] The first activation instruction is a third MAC CE, and the third MAC CE performs activation and deactivation instructions based on a CSI-RS resource set or CSI-RS resource of a specified SCell.

[0223] A) In an optional manner, the third MAC CE includes a serving cell identifier; the third MAC CE is used to activate the TRS on the first activated BWP of a designated Scell, and the designated Scell ​​is determined based on the serving cell identifier.

[0224] B) In an optional manner, the third MAC CE includes a serving cell identifier and a TRS resource set identifier; the third MAC CE is used to activate a designated TRS on a first activated BWP of a designated Scell, the designated Scell ​​is determined based on the serving cell identifier, and the designated TRS is determined based on the TRS resource set identifier.

[0225] C) In an optional manner, the third MAC CE includes a serving cell identifier and a BWP identifier; the third MAC CE is used to activate the TRS on a designated BWP of a designated Scell, the designated Scell ​​is determined based on the serving cell identifier, and the designated BWP is determined based on the BWP identifier.

[0226] D) In ​​an optional manner, the third MAC CE includes a serving cell identifier, a BWP identifier and a TRS resource set identifier; the third MAC CE is used to activate a specified TRS on a specified BWP of a specified Scell, the specified Scell ​​is determined based on the serving cell identifier, the specified BWP is determined based on the BWP identifier, and the specified TRS is determined based on the TRS resource set identifier.

[0227] For any one of the above solutions A) to D), optionally, the third MAC CE also includes: a TCI status identifier.

[0228] The technical solution of the embodiment of the present application is illustrated below with reference to specific application examples.

[0229] In one example, referring to Figure 6-1 , use SP CSI-RS / CSI-IM Resource Set Activation / Deactivation MAC CE (i.e., the third MAC CE) to activate the TRS on the specified BWP (determined by BWP ID) of the specified cell (determined by Serving Cell ID). If TRS is activated, the terminal device ignores the information in the subsequent TCI state field.

[0230] In one example, referring to Figure 6-2 , Figure 6-2 The MAC CE shown (i.e., the third MAC CE) is modified based on the SP CSI-RS / CSI-IM Resource Set Activation / Deactivation MAC CE, and the MAC CE is used to activate the specified TRS (determined by TRSresource set ID) on the specified BWP (determined by BWP ID) of the specified cell (determined by Serving Cell ID).

[0231] In one example, referring to Figure 6-3 , Figure 6-3 The MAC CE shown (i.e., the third MAC CE) is modified based on the SP CSI-RS / CSI-IM Resource Set Activation / Deactivation MAC CE, and the MAC CE is used to activate the TRS on the specified BWP (determined by the BWP ID) of the specified cell (determined by the Serving Cell ID).

[0232] In one example, referring to Figure 6-4 , Figure 6-4 The MAC CE shown (i.e., the third MAC CE) is modified based on the SP CSI-RS / CSI-IM Resource Set Activation / Deactivation MAC CE, and the MAC CE is used to activate the TRS on the BWP indicated by the firstActiveDownlinkBWP-Id of the specified cell (determined by the Serving Cell ID).

[0233] In one example, referring to Figure 6-5 , Figure 6-5 The MAC CE shown (i.e., the third MAC CE) is modified based on the SP CSI-RS / CSI-IM Resource Set Activation / Deactivation MAC CE, and the MAC CE is used to activate the specified TRS (determined by the TRS resource set ID) on the BWP indicated by the firstActiveDownlinkBWP-Id of the specified cell (determined by the Serving Cell ID).

[0234] It should be noted that all MAC CEs defined in the above solution need to define a corresponding LCID for identifying the MAC CE in the MAC PDU.

[0235] It should be noted that if the time offset configured in the above solution is in slot units, the slot length can be the slot length corresponding to the SCS pre-configured by the network or the slot length corresponding to the fixed SCS.

[0236] It should be noted that the terminal device does not perform synchronization before the time offset.

[0237] Method 5

[0238] The first activation instruction is a first DCI, and the first DCI is used to trigger a first activated BWP of the Scell ​​to switch from a sleep BWP to a non-sleep BWP.

[0239] For the terminal device, if the Scell ​​meets the second condition, the terminal device starts measuring the TRS at a fourth time. The definition of the fourth time is described below.

[0240] 1) The fourth time is the time when the terminal device receives the first DCI; or,

[0241] 2) the fourth time is the time when the terminal device receives the first DCI plus a time offset; or,

[0242] 3) The fourth time is the time when the terminal device completes feeding back the HARQ ACK corresponding to the first DCI; or,

[0243] 4) The fourth time is the time when the terminal device feeds back the HARQ ACK corresponding to the first DCI plus the time offset.

[0244] For the network device, if the Scell ​​meets the second condition, the network device starts to send the TRS at a fourth time. The definition of the fourth time is described below.

[0245] 1) The fourth time is the time when the network device finishes sending the first DCI; or,

[0246] 2) the fourth time is the time when the network device finishes sending the first DCI plus a time offset; or,

[0247] 3) The fourth time is the time when the network device receives the HARQ ACK corresponding to the first DCI; or,

[0248] 4) The fourth time is the time when the network device receives the HARQ ACK corresponding to the first DCI plus the time offset.

[0249] In the above solution, the Scell ​​satisfies the second condition, including at least one of the following:

[0250] The Scell ​​changes from the deactivated state to the activated state;

[0251] The first activated BWP of a Scell ​​is configured with a TRS and the TRS is used for Scell ​​activation.

[0252] In the above solution, the value of the time offset is a fixed value or is configured by the network device. Further, optionally, when the value of the time offset is a fixed value, the value of the time offset is associated with the capability of the terminal device.

[0253] In one example, "firstActiveDownlinkBWP-Id of Scell ​​is not set to dormant BWP" is used as a condition for activating TRS (i.e., part of the first condition), that is, if the firstActiveDownlinkBWP-Id of the Scell ​​is set to dormant BWP, TRS will not be activated. When the terminal device receives a DCI for triggering a switch from dormant BWP to non-dormant BWP or when the terminal device receives a DCI for triggering a switch from dormant BWP to non-dormantBWP plus a time offset, TRS activation is triggered, and the terminal device performs TRS measurement. Accordingly, after the base station sends the DCI for triggering a switch from dormant BWP to non-dormant BWP or after the base station sends the DCI for triggering a switch from dormant BWP to non-dormant BWP plus an offset, TRS sending is triggered.

[0254] The value of the above offset can be a fixed value or a value configured on the network side. If it is a fixed value, the fixed value can be a fixed value related to the capability of the terminal device, for example, the fixed values ​​corresponding to capability1 and capability2 in the UE processing capability are different, for example, the fixed values ​​(1, 2) or (2, 3) correspond to capability 1 and capability 2 respectively, and the value measurement unit of the offset can be ms or the number of slots. If it is the number of slots, the length of the slot is consistent with the slot length in the SCS unit of the PDSCH where the DCI is located.

[0255] The technical solution of the embodiment of the present application defines TRS configuration information, the measurement time and the sending time of TRS, and a first activation command for activating TRS, so that the sending and receiving of TRS is effective without wasting resources or power of the terminal device.

[0256] Figure 7 The structure of the device for triggering TRS activation provided in the embodiment of the present application is shown in FIG. Figure 1 , applied to terminal devices, such as Figure 7 The device for triggering TRS activation includes:

[0257] A receiving unit 701 is configured to receive a first activation instruction sent by a network device, where the first activation instruction is used to activate a TRS, and the TRS is used for fast activation of a Scell;

[0258] The measuring unit 702 is configured to measure a TRS, wherein the measured TRS is used to perform time and frequency synchronization with the Scell.

[0259] In an optional manner, the receiving unit 701 is further used to receive a first RRC signaling sent by the network device, the first RRC signaling including TRS configuration information, the TRS configuration information including first indication information, the first indication information being used to indicate the type of TRS and / or the purpose of TRS, the type of TRS and / or the purpose of TRS being used to determine whether the TRS is used for Scell ​​fast activation.

[0260] In an optional manner, the TRS configuration information further includes at least one of the following:

[0261] second indication information, where the second indication information is used to indicate the number of transmissions after the TRS is activated;

[0262] third indication information, where the third indication information is used to indicate a sending interval of the TRS;

[0263] Fourth indication information, where the fourth indication information is used to indicate a time offset.

[0264] In an optional manner, the first RRC signaling includes a non-zero power CSI-RS resource set configuration and a CSI resource configuration,

[0265] The TRS configuration information is configured in the non-zero power CSI-RS resource set configuration or in the CSI resource configuration.

[0266] In an optional manner, the first activation instruction is a first MAC CE, and the first MAC CE is a Scell ​​activation and deactivation MAC CE.

[0267] In an optional manner, the activation time of the TRS refers to the time when the terminal device starts measuring the TRS;

[0268] The measuring unit 702 is configured to start measuring the TRS at a first time if the Scell ​​meets a first condition; wherein,

[0269] The first time is the time when the terminal device receives the first MAC CE; or,

[0270] The first time is the time when the terminal device receives the PDSCH corresponding to the first MAC CE; or,

[0271] The first time is the time when the terminal device receives the first MAC CE plus a time offset; or,

[0272] The first time is the time when the terminal device receives the PDSCH corresponding to the first MAC CE plus a time offset; or,

[0273] The first time is the time when the terminal device feeds back the HARQ ACK information corresponding to the first MAC CE; or,

[0274] The first time is the time when the terminal device feeds back the HARQ ACK information corresponding to the first MAC CE plus the time offset.

[0275] In an optional manner, the first activation instruction is a second RRC signaling, the second RRC signaling is used to configure at least one Scell, and the initial state of the at least one Scell ​​is an activated state.

[0276] In an optional manner, the activation time of the TRS refers to the time when the terminal device starts measuring the TRS;

[0277] The measuring unit 702 is configured to start measuring the TRS at a second time if the Scell ​​meets the first condition; wherein,

[0278] The second time is the time when the terminal device receives the second RRC signaling; or,

[0279] The second time is the time when the terminal device receives the PDSCH corresponding to the second RRC signaling; or,

[0280] The second time is the time when the terminal device receives the second RRC signaling plus a time offset; or,

[0281] The second time is the time when the terminal device receives the PDSCH corresponding to the second RRC signaling plus a time offset; or,

[0282] The second time is the time when the terminal device receives and decodes the second RRC signaling; or,

[0283] The second time is the time when the terminal device receives and decodes the second RRC signaling plus a time offset; or,

[0284] The second time is the time when the first activated BWP of the Scell ​​is activated after the terminal device receives the second RRC signaling; or,

[0285] The second time is the time of completing the first activated BWP of the Scell ​​after the terminal device receives the second RRC signaling plus the time offset; or,

[0286] The second time is the time when the terminal device feeds back the HARQ ACK information corresponding to the second RRC signaling; or,

[0287] The second time is the time when the terminal device feeds back the HARQ ACK information corresponding to the second RRC signaling plus a time offset.

[0288] In an optional manner, the first activation instruction is a second MAC CE, and the second MAC CE is a TRS activation deactivation MAC CE.

[0289] In an optional manner, the activation time of the TRS refers to the time when the terminal device starts measuring the TRS;

[0290] The measuring unit 702 is configured to start measuring the TRS at a third time if the Scell ​​meets the first condition; wherein,

[0291] The third time is the time when the terminal device receives the second MAC CE; or,

[0292] The third time is the time when the terminal device receives the PDSCH corresponding to the second MAC CE; or,

[0293] The third time is the time when the terminal device receives the second MAC CE plus a time offset; or,

[0294] The third time is the time when the terminal device receives the PDSCH corresponding to the first MAC CE plus the time offset; or,

[0295] The third time is the time when the terminal device feeds back the HARQ ACK information corresponding to the second MAC CE; or,

[0296] The third time is the time when the terminal device feeds back the HARQ ACK information corresponding to the second MAC CE plus the time offset.

[0297] In an optional manner, the second MAC CE is transmitted simultaneously with the first MAC CE; or,

[0298] The second MAC CE is transmitted independently from the first MAC CE;

[0299] The first MAC CE is a Scell ​​activation and deactivation MAC CE.

[0300] In an optional manner, when the second MAC CE and the first MAC CE are transmitted independently,

[0301] The second MAC CE is transmitted when the HARQ ACK information corresponding to the first MAC CE is transmitted; or,

[0302] The second MAC CE is transmitted before the HARQ ACK information corresponding to the first MAC CE is transmitted.

[0303] In an optional manner, the second MAC CE includes N1 bits, where N1 is a positive integer, and the N1 bits correspond one-to-one to N1 Scells. The value of each bit is used to indicate whether the Scell ​​corresponding to the bit activates TRS, and the TRS is used for fast activation of the Scell.

[0304] In an optional manner, the first MAC CE includes N2 bits, where N2 is a positive integer greater than or equal to N1, and the N2 bits correspond one-to-one to N2 serving cells, and the value of each bit is used to indicate whether the serving cell corresponding to the bit is activated.

[0305] In an optional manner, the N1 Scells are serving cells that meet the first condition among the N2 serving cells; or,

[0306] The N1 is the number of serving cells.

[0307] In an optional manner, the N1 bits are located after the N2 bits.

[0308] In an optional manner, the N1 bits correspond one-to-one to the N1 Scells in an ascending order of serving cell indexes in an ascending order in a low-to-high order.

[0309] In an optional manner, the first activation instruction is a third MAC CE, and the third MAC CE performs activation or deactivation instructions based on a CSI-RS resource set or CSI-RS resource of a specified SCell.

[0310] In an optional manner, the third MAC CE includes a serving cell identifier;

[0311] The third MAC CE is used to activate the TRS on the first activated BWP of the designated Scell, where the designated Scell ​​is determined based on the serving cell identifier.

[0312] In an optional manner, the third MAC CE includes a serving cell identifier and a TRS resource set identifier;

[0313] The third MAC CE is used to activate a designated TRS on a first activated BWP of a designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, and the designated TRS is determined based on the TRS resource set identifier.

[0314] In an optional manner, the third MAC CE includes a serving cell identifier and a BWP identifier;

[0315] The third MAC CE is used to activate the TRS on the designated BWP of the designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, and the designated BWP is determined based on the BWP identifier.

[0316] In an optional manner, the third MAC CE includes a serving cell identifier, a BWP identifier, and a TRS resource set identifier;

[0317] The third MAC CE is used to activate a designated TRS on a designated BWP of a designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, the designated BWP is determined based on the BWP identifier, and the designated TRS is determined based on the TRS resource set identifier.

[0318] In an optional manner, the third MAC CE also includes: a TCI status identifier.

[0319] In an optional manner, the Scell ​​satisfies the first condition, including at least one of the following:

[0320] The Scell ​​changes from the deactivated state to the activated state;

[0321] The first active BWP of the Scell ​​is not set to the dormant BWP;

[0322] The first activated BWP of a Scell ​​is configured with a TRS and the TRS is used for Scell ​​activation.

[0323] In an optional manner, the first activation instruction is a first DCI, and the first DCI is used to trigger a first activated BWP of the Scell ​​to switch from a sleep BWP to a non-sleep BWP.

[0324] In an optional manner, the activation time of the TRS refers to the time when the terminal device starts measuring the TRS;

[0325] The measuring unit 702 is configured to start measuring the TRS at a fourth time if the Scell ​​meets the second condition; wherein,

[0326] The fourth time is the time when the terminal device receives the first DCI; or,

[0327] The fourth time is the time when the terminal device receives the first DCI plus a time offset; or,

[0328] The fourth time is the time when the terminal device feeds back the HARQ ACK corresponding to the first DCI; or,

[0329] The fourth time is the time when the terminal device feeds back the HARQ ACK corresponding to the first DCI plus the time offset.

[0330] In an optional manner, the Scell ​​satisfies the second condition, including at least one of the following:

[0331] The Scell ​​changes from the deactivated state to the activated state;

[0332] The first activated BWP of a Scell ​​is configured with a TRS and the TRS is used for Scell ​​activation.

[0333] In an optional manner, the value of the time offset is a fixed value or is configured for the network device.

[0334] In an optional manner, when the value of the time offset is a fixed value, the value of the time offset is associated with the capability of the terminal device.

[0335] Those skilled in the art should understand that the relevant description of the above-mentioned TRS activation device in the embodiment of the present application can be understood by referring to the relevant description of the TRS activation method in the embodiment of the present application.

[0336] Figure 8 FIG. 2 is a schematic diagram of the structure of the device for triggering TRS activation provided in an embodiment of the present application, which is applied to network equipment, such as Figure 8 The device for triggering TRS activation includes:

[0337] The sending unit 801 is used to send a first activation instruction to a terminal device, where the first activation instruction is used to activate a TRS, and the TRS is used for fast activation of the Scell; send the TRS, where the TRS is used for the terminal device to perform time and frequency synchronization with the Scell.

[0338] In an optional manner, the sending unit 801 is also used to send a first RRC signaling to the terminal device, the first RRC signaling includes TRS configuration information, the TRS configuration information includes first indication information, the first indication information is used to indicate the type of TRS and / or the purpose of TRS, the type of TRS and / or the purpose of TRS is used to determine that the TRS is used for Scell ​​fast activation.

[0339] In an optional manner, the TRS configuration information further includes at least one of the following:

[0340] second indication information, where the second indication information is used to indicate the number of transmissions after the TRS is activated;

[0341] third indication information, where the third indication information is used to indicate a sending interval of the TRS;

[0342] Fourth indication information, where the fourth indication information is used to indicate a time offset.

[0343] In an optional manner, the first RRC signaling includes a non-zero power CSI-RS resource set configuration and a CSI resource configuration,

[0344] The TRS configuration information is configured in the non-zero power CSI-RS resource set configuration or in the CSI resource configuration.

[0345] In an optional manner, the first activation instruction is a first MAC CE, and the first MAC CE is a Scell ​​activation and deactivation MAC CE.

[0346] In an optional manner, the activation time of the TRS refers to the time when the network device starts sending the TRS;

[0347] The sending unit 801 is configured to start sending the TRS at the first time if the Scell ​​meets the first condition; wherein,

[0348] The first time is the time when the network device finishes sending the first MAC CE; or,

[0349] The first time is the time when the network device finishes sending the PDSCH corresponding to the first MAC CE; or,

[0350] The first time is the time when the network device finishes sending the first MAC CE plus a time offset; or,

[0351] The first time is the time when the network device finishes sending the PDSCH corresponding to the first MAC CE plus a time offset; or,

[0352] The first time is the time when the network device receives the HARQ ACK information corresponding to the first MAC CE; or,

[0353] The first time is the time when the network device receives the HARQ ACK information corresponding to the first MAC CE plus a time offset.

[0354] In an optional manner, the first activation instruction is a second RRC signaling, the second RRC signaling is used to configure at least one Scell, and the initial state of the at least one Scell ​​is an activated state.

[0355] In an optional manner, the activation time of the TRS refers to the time when the network device starts sending the TRS;

[0356] The sending unit 801 is configured to start sending TRS at a second time if the Scell ​​meets the first condition; wherein,

[0357] The second time is the time when the network device finishes sending the second RRC signaling; or,

[0358] The second time is the time when the network device finishes sending the PDSCH corresponding to the second RRC signaling; or,

[0359] The second time is the time when the network device completes sending the second RRC signaling plus a time offset; or,

[0360] The second time is the time when the network device finishes sending the PDSCH corresponding to the second RRC signaling plus a time offset; or,

[0361] The second time is the time when the network device receives the HARQ ACK information corresponding to the second RRC signaling; or,

[0362] The second time is the time when the network device receives the HARQ ACK information corresponding to the second RRC signaling plus a time offset.

[0363] In an optional manner, the first activation instruction is a second MAC CE, and the second MAC CE is a TRS activation deactivation MAC CE.

[0364] In an optional manner, the activation time of the TRS refers to the time when the network device starts sending the TRS;

[0365] The sending unit 801 is configured to start sending the TRS at a third time if the Scell ​​meets the first condition; wherein,

[0366] The third time is the time when the network device finishes sending the second MAC CE; or,

[0367] The third time is the time when the network device finishes sending the PDSCH corresponding to the second MAC CE; or,

[0368] The third time is the time when the network device finishes sending the second MAC CE plus a time offset; or,

[0369] The third time is the time when the network device finishes sending the PDSCH corresponding to the first MAC CE plus the time offset; or,

[0370] The third time is the time when the network device receives the HARQ ACK information corresponding to the second MAC CE; or,

[0371] The third time is the time when the network device receives the HARQ ACK information corresponding to the second MAC CE plus the time offset.

[0372] In an optional manner, the second MAC CE is transmitted simultaneously with the first MAC CE; or,

[0373] The second MAC CE is transmitted independently from the first MAC CE;

[0374] The first MAC CE is a Scell ​​activation and deactivation MAC CE.

[0375] In an optional manner, when the second MAC CE and the first MAC CE are transmitted independently,

[0376] The second MAC CE is transmitted when the HARQ ACK information corresponding to the first MAC CE is transmitted; or,

[0377] The second MAC CE is transmitted before the HARQ ACK information corresponding to the first MAC CE is transmitted.

[0378] In an optional manner, the second MAC CE includes N1 bits, where N1 is a positive integer, and the N1 bits correspond one-to-one to N1 Scells. The value of each bit is used to indicate whether the Scell ​​corresponding to the bit activates TRS, and the TRS is used for fast activation of the Scell.

[0379] In an optional manner, the first MAC CE includes N2 bits, where N2 is a positive integer greater than or equal to N1, and the N2 bits correspond one-to-one to N2 serving cells, and the value of each bit is used to indicate whether the serving cell corresponding to the bit is activated.

[0380] In an optional manner, the N1 Scells are serving cells that meet the first condition among the N2 serving cells; or,

[0381] The N1 is the number of serving cells.

[0382] In an optional manner, the N1 bits are located after the N2 bits.

[0383] In an optional manner, the N1 bits correspond one-to-one to the N1 Scells in an ascending order of serving cell indexes in an ascending order in a low-to-high order.

[0384] In an optional manner, the first activation instruction is a third MAC CE, and the third MAC CE performs activation or deactivation instructions based on a CSI-RS resource set or CSI-RS resource of a specified SCell.

[0385] In an optional manner, the third MAC CE includes a serving cell identifier;

[0386] The third MAC CE is used to activate the TRS on the first activated BWP of the designated Scell, where the designated Scell ​​is determined based on the serving cell identifier.

[0387] In an optional manner, the third MAC CE includes a serving cell identifier and a TRS resource set identifier;

[0388] The third MAC CE is used to activate a designated TRS on a first activated BWP of a designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, and the designated TRS is determined based on the TRS resource set identifier.

[0389] In an optional manner, the third MAC CE includes a serving cell identifier and a BWP identifier;

[0390] The third MAC CE is used to activate the TRS on the designated BWP of the designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, and the designated BWP is determined based on the BWP identifier.

[0391] In an optional manner, the third MAC CE includes a serving cell identifier, a BWP identifier, and a TRS resource set identifier;

[0392] The third MAC CE is used to activate a designated TRS on a designated BWP of a designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, the designated BWP is determined based on the BWP identifier, and the designated TRS is determined based on the TRS resource set identifier.

[0393] In an optional manner, the third MAC CE also includes: a TCI status identifier.

[0394] In an optional manner, the Scell ​​satisfies the first condition, including at least one of the following:

[0395] The Scell ​​changes from the deactivated state to the activated state;

[0396] The first active BWP of the Scell ​​is not set to the dormant BWP;

[0397] The first activated BWP of a Scell ​​is configured with a TRS and the TRS is used for Scell ​​activation.

[0398] In an optional manner, the first activation instruction is a first DCI, and the first DCI is used to trigger a first activated BWP of the Scell ​​to switch from a sleep BWP to a non-sleep BWP.

[0399] In an optional manner, the activation time of the TRS refers to the time when the network device starts sending the TRS;

[0400] The sending unit 801 is configured to start sending the TRS at a fourth time if the Scell ​​meets the second condition; wherein,

[0401] The fourth time is the time when the network device finishes sending the first DCI; or,

[0402] The fourth time is the time when the network device finishes sending the first DCI plus a time offset; or,

[0403] The fourth time is the time when the network device receives the HARQ ACK corresponding to the first DCI; or,

[0404] The fourth time is the time when the network device receives the HARQ ACK corresponding to the first DCI plus a time offset.

[0405] In an optional manner, the Scell ​​satisfies the second condition, including at least one of the following:

[0406] The Scell ​​changes from the deactivated state to the activated state;

[0407] The first activated BWP of a Scell ​​is configured with a TRS and the TRS is used for Scell ​​activation.

[0408] In an optional manner, the value of the time offset is a fixed value or is configured for the network device.

[0409] In an optional manner, when the value of the time offset is a fixed value, the value of the time offset is associated with the capability of the terminal device.

[0410] Those skilled in the art should understand that the relevant description of the above-mentioned TRS activation device in the embodiment of the present application can be understood by referring to the relevant description of the TRS activation method in the embodiment of the present application.

[0411] Fig. 9 900 is a schematic structural diagram of a communication device provided in an embodiment of the present application. The communication device may be a terminal device or a network device. Fig. 9 The communication device 900 shown includes a processor 910, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0412] Alternatively, if Fig. 9 As shown, the communication device 900 may further include a memory 920. The processor 910 may call and run a computer program from the memory 920 to implement the method in the embodiment of the present application.

[0413] The memory 920 may be a separate device independent of the processor 910 , or may be integrated into the processor 910 .

[0414] Alternatively, if Fig. 9 As shown, the communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0415] The transceiver 930 may include a transmitter and a receiver. The transceiver 930 may further include an antenna, and the number of antennas may be one or more.

[0416] Optionally, the communication device 900 may specifically be a network device of an embodiment of the present application, and the communication device 900 may implement corresponding processes implemented by the network device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0417] Optionally, the communication device 900 may specifically be a mobile terminal device / terminal device of an embodiment of the present application, and the communication device 900 may implement the corresponding processes implemented by the mobile terminal device / terminal device in each method of the embodiment of the present application, which will not be described again for the sake of brevity.

[0418] Fig.10 It is a schematic structural diagram of the chip of an embodiment of the present application. Fig.10 The chip 1000 shown includes a processor 1010, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0419] Alternatively, if Fig.10 As shown, the chip 1000 may further include a memory 1020. The processor 1010 may call and run a computer program from the memory 1020 to implement the method in the embodiment of the present application.

[0420] The memory 1020 may be a separate device independent of the processor 1010 , or may be integrated into the processor 1010 .

[0421] Optionally, the chip 1000 may further include an input interface 1030. The processor 1010 may control the input interface 1030 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0422] Optionally, the chip 1000 may further include an output interface 1040. The processor 1010 may control the output interface 1040 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0423] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0424] Optionally, the chip can be applied to the mobile terminal device / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal device / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0425] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0426] Fig.11 1 is a schematic block diagram of a communication system 1100 provided in an embodiment of the present application. Fig.11 As shown, the communication system 1100 includes a terminal device 1110 and a network device 1120 .

[0427] Among them, the terminal device 1110 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1120 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0428] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0429] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0430] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0431] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0432] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0433] Optionally, the computer-readable storage medium can be applied to the mobile terminal device / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal device / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0434] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0435] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0436] Optionally, the computer program product can be applied to the mobile terminal device / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal device / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0437] The embodiment of the present application also provides a computer program.

[0438] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods in the embodiments of the present application. For the sake of brevity, they are not described here.

[0439] Optionally, the computer program can be applied to the mobile terminal device / terminal device in the embodiments of the present application. When the computer program is run on a computer, the computer executes the corresponding processes implemented by the mobile terminal device / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0440] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0441] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0442] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0443] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0444] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0445] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0446] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for triggering activation of a tracking reference signal (TRS), the method comprising: The terminal device receives a first activation instruction sent by the network device, where the first activation instruction is used to activate a TRS, and the TRS is used for Scell ​​fast activation; the first activation instruction includes a first MAC CE and a second MAC CE, where the first MAC CE is an Scell ​​activation deactivation MAC CE, and the second MAC CE is a TRS activation deactivation MAC CE; the second MAC CE is transmitted simultaneously with the first MAC CE; The terminal device measures the TRS, wherein the measured TRS is used for time and frequency synchronization with the Scell; Before the terminal device receives the first activation instruction sent by the network device, the method further includes: The terminal device receives first RRC signaling sent by the network device, where the first RRC signaling includes TRS configuration information, where the TRS configuration information includes first indication information, where the first indication information is used to indicate a type of TRS and / or a purpose of the TRS, where the type of the TRS and / or the purpose of the TRS is used to determine whether the TRS is used for Scell ​​fast activation; The TRS configuration information further includes second indication information, where the second indication information is used to indicate the number of transmissions after the TRS is activated; The second MAC CE includes N1 bits, where N1 is a positive integer, and the N1 bits correspond to the N1 Scells one by one. The value of each bit is used to indicate whether the Scell ​​corresponding to the bit activates the TRS, and the TRS is used for fast activation of the Scell. The first MAC CE includes N2 bits, where N2 is a positive integer greater than or equal to N1, and the N2 bits correspond one-to-one to the N2 Serving cells, and the value of each bit is used to indicate whether the serving cell Servingcell corresponding to the bit is activated; The N1 Scells are serving cells that meet the first condition among the N2 serving cells; The N1 bits are located after the N2 bits; The N1 bits correspond one-to-one to the N1 Scells in order from low to high according to the serving cell indexes in order from small to large; The Scell ​​satisfies the first condition, including: the Scell ​​changes from a deactivated state to an activated state; The TRS activated by the Scell ​​is a TRS configured on the BWP indicated by the identifier of the first activated BWP corresponding to the Scell.

2. The method according to claim 1, wherein: The TRS configuration information also includes at least one of the following: third indication information, where the third indication information is used to indicate a sending interval of the TRS; Fourth indication information, where the fourth indication information is used to indicate a time offset.

3. The method according to claim 1 or 2, wherein: The first RRC signaling includes a non-zero power CSI-RS resource set configuration and a CSI resource configuration, The TRS configuration information is configured in the non-zero power CSI-RS resource set configuration or in the CSI resource configuration.

4. The method according to claim 1, wherein: The activation time of the TRS refers to the time when the terminal device starts measuring the TRS; The terminal device measures the TRS, including: If the Scell ​​satisfies the first condition, the terminal device starts measuring the TRS at a third time; wherein, The third time is the time when the terminal device receives the second MAC CE; or, The third time is the time when the terminal device receives the PDSCH corresponding to the second MAC CE; or, The third time is the time when the terminal device receives the second MAC CE plus a time offset; or, The third time is the time when the terminal device receives the PDSCH corresponding to the first MAC CE plus the time offset; or, The third time is the time when the terminal device feeds back the HARQ ACK information corresponding to the second MAC CE; or, The third time is the time when the terminal device feeds back the HARQ ACK information corresponding to the second MAC CE plus the time offset.

5. The method according to claim 1 or 2, wherein: The first activation instruction also includes a third MAC CE, and the third MAC CE performs activation and deactivation instructions based on the CSI-RS resource set or CSI-RS resource of the specified SCell.

6. The method according to claim 5, wherein: The third MAC CE includes a serving cell identifier; The third MAC CE is used to activate the TRS on the first activated BWP of the designated Scell, where the designated Scell ​​is determined based on the serving cell identifier.

7. The method according to claim 5, wherein: The third MAC CE includes a serving cell identifier and a TRS resource set identifier; The third MAC CE is used to activate a designated TRS on a first activated BWP of a designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, and the designated TRS is determined based on the TRS resource set identifier.

8. The method according to claim 5, wherein: The third MAC CE includes a serving cell identifier and a BWP identifier; The third MAC CE is used to activate the TRS on the designated BWP of the designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, and the designated BWP is determined based on the BWP identifier.

9. The method according to claim 5, wherein: The third MAC CE includes a serving cell identifier, a BWP identifier, and a TRS resource set identifier; The third MAC CE is used to activate a designated TRS on a designated BWP of a designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, the designated BWP is determined based on the BWP identifier, and the designated TRS is determined based on the TRS resource set identifier.

10. The method according to any one of claims 6 to 9, wherein: The third MAC CE also includes: a TCI state identifier.

11. The method according to claim 1 or 4, wherein: The Scell ​​satisfies the first condition and further includes at least one of the following: The first active BWP of the Scell ​​is not set to the dormant BWP; The first activated BWP of a Scell ​​is configured with a TRS and the TRS is used for Scell ​​activation.

12. The method according to claim 4, wherein: The value of the time offset is a fixed value or is configured for the network device.

13. The method according to claim 12, wherein: When the value of the time offset is a fixed value, the value of the time offset is associated with the capability of the terminal device.

14. A method for triggering TRS activation, the method comprising: The network device sends a first activation instruction to the terminal device, where the first activation instruction is used to activate a TRS, and the TRS is used for Scell ​​fast activation; the first activation instruction includes a first MAC CE and a second MAC CE, where the first MAC CE is an Scell ​​activation deactivation MAC CE, and the second MAC CE is a TRS activation deactivation MAC CE; the second MAC CE is transmitted simultaneously with the first MAC CE; The network device sends a TRS, wherein the TRS is used for the terminal device to perform time and frequency synchronization with the Scell; Before the network device sends the first activation instruction to the terminal device, the method further includes: The network device sends a first RRC signaling to the terminal device, where the first RRC signaling includes TRS configuration information, where the TRS configuration information includes first indication information, where the first indication information is used to indicate a type of TRS and / or a purpose of the TRS, where the type of the TRS and / or the purpose of the TRS is used to determine whether the TRS is used for Scell ​​fast activation; The TRS configuration information further includes second indication information, where the second indication information is used to indicate the number of transmissions after the TRS is activated; The second MAC CE includes N1 bits, where N1 is a positive integer, and the N1 bits correspond to the N1 Scells one by one. The value of each bit is used to indicate whether the Scell ​​corresponding to the bit activates the TRS, and the TRS is used for fast activation of the Scell. The first MAC CE includes N2 bits, where N2 is a positive integer greater than or equal to N1, and the N2 bits correspond one-to-one to the N2 Serving cells, and the value of each bit is used to indicate whether the serving cell Servingcell corresponding to the bit is activated; The N1 Scells are serving cells that meet the first condition among the N2 serving cells; The N1 bits are located after the N2 bits; The N1 bits correspond one-to-one to the N1 Scells in order from low to high according to the serving cell indexes in order from small to large; The Scell ​​satisfies the first condition, including: the Scell ​​changes from a deactivated state to an activated state; The TRS activated by the Scell ​​is a TRS configured on the BWP indicated by the identifier of the first activated BWP corresponding to the Scell.

15. The method according to claim 14, wherein: The TRS configuration information also includes at least one of the following: third indication information, where the third indication information is used to indicate a sending interval of the TRS; Fourth indication information, where the fourth indication information is used to indicate a time offset.

16. The method according to claim 14 or 15, wherein: The first RRC signaling includes a non-zero power CSI-RS resource set configuration and a CSI resource configuration, The TRS configuration information is configured in the non-zero power CSI-RS resource set configuration or in the CSI resource configuration.

17. The method according to claim 14, wherein: The activation time of the TRS refers to the time when the network device starts sending the TRS; The network device sends a TRS, including: If the Scell ​​satisfies the first condition, the network device starts sending TRS at a third time; wherein, The third time is the time when the network device finishes sending the second MAC CE; or, The third time is the time when the network device finishes sending the PDSCH corresponding to the second MAC CE; or, The third time is the time when the network device finishes sending the second MAC CE plus a time offset; or, The third time is the time when the network device finishes sending the PDSCH corresponding to the first MAC CE plus the time offset; or, The third time is the time when the network device receives the HARQ ACK information corresponding to the second MAC CE; or, The third time is the time when the network device receives the HARQ ACK information corresponding to the second MAC CE plus the time offset.

18. The method according to claim 14 or 15, wherein: The first activation instruction also includes a third MAC CE, and the third MAC CE performs activation and deactivation instructions based on the CSI-RS resource set or CSI-RS resource of the specified SCell.

19. The method according to claim 18, wherein: The third MAC CE includes a serving cell identifier; The third MAC CE is used to activate the TRS on the first activated BWP of the designated Scell, where the designated Scell ​​is determined based on the serving cell identifier.

20. The method according to claim 18, wherein: The third MAC CE includes a serving cell identifier and a TRS resource set identifier; The third MAC CE is used to activate a designated TRS on a first activated BWP of a designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, and the designated TRS is determined based on the TRS resource set identifier.

21. The method according to claim 18, wherein: The third MAC CE includes a serving cell identifier and a BWP identifier; The third MAC CE is used to activate the TRS on the designated BWP of the designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, and the designated BWP is determined based on the BWP identifier.

22. The method according to claim 18, wherein: The third MAC CE includes a serving cell identifier, a BWP identifier, and a TRS resource set identifier; The third MAC CE is used to activate a designated TRS on a designated BWP of a designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, the designated BWP is determined based on the BWP identifier, and the designated TRS is determined based on the TRS resource set identifier.

23. The method according to any one of claims 19 to 22, wherein: The third MAC CE also includes: a TCI state identifier.

24. The method according to claim 14 or 17, wherein: The Scell ​​satisfies the first condition and further includes at least one of the following: The first active BWP of the Scell ​​is not set to the dormant BWP; The first activated BWP of a Scell ​​is configured with a TRS and the TRS is used for Scell ​​activation.

25. The method of claim 17, wherein: The value of the time offset is a fixed value or is configured for the network device.

26. The method according to claim 25, wherein: When the value of the time offset is a fixed value, the value of the time offset is associated with the capability of the terminal device.

27. A device for triggering TRS activation, applied to a terminal device, the device comprising: a receiving unit, configured to receive a first activation instruction sent by a network device, wherein the first activation instruction is used to activate a TRS, and the TRS is used for fast activation of an Scell; the first activation instruction includes a first MAC CE and a second MAC CE, wherein the first MAC CE is an Scell ​​activation deactivation MAC CE, and the second MAC CE is a TRS activation deactivation MAC CE; and the second MAC CE is transmitted simultaneously with the first MAC CE; A measuring unit, configured to measure a TRS, wherein the measured TRS is used for time and frequency synchronization with the Scell; The receiving unit is further used to receive first RRC signaling sent by the network device, where the first RRC signaling includes TRS configuration information, where the TRS configuration information includes first indication information, where the first indication information is used to indicate a type of TRS and / or a purpose of the TRS, where the type of TRS and / or the purpose of the TRS is used to determine whether the TRS is used for Scell ​​fast activation; The TRS configuration information further includes second indication information, where the second indication information is used to indicate the number of transmissions after the TRS is activated; The second MAC CE includes N1 bits, where N1 is a positive integer, and the N1 bits correspond to the N1 Scells one by one. The value of each bit is used to indicate whether the Scell ​​corresponding to the bit activates the TRS, and the TRS is used for fast activation of the Scell. The first MAC CE includes N2 bits, where N2 is a positive integer greater than or equal to N1, and the N2 bits correspond one-to-one to the N2 Serving cells, and the value of each bit is used to indicate whether the serving cell Servingcell corresponding to the bit is activated; The N1 Scells are serving cells that meet the first condition among the N2 serving cells; The N1 bits are located after the N2 bits; The N1 bits correspond one-to-one to the N1 Scells in order from low to high according to the serving cell indexes in order from small to large; The Scell ​​satisfies the first condition, including: the Scell ​​changes from a deactivated state to an activated state; The TRS activated by the Scell ​​is a TRS configured on the BWP indicated by the identifier of the first activated BWP corresponding to the Scell.

28. The device according to claim 27, wherein The TRS configuration information also includes at least one of the following: third indication information, where the third indication information is used to indicate a sending interval of the TRS; Fourth indication information, where the fourth indication information is used to indicate a time offset.

29. The device according to claim 27 or 28, wherein The first RRC signaling includes a non-zero power CSI-RS resource set configuration and a CSI resource configuration, The TRS configuration information is configured in the non-zero power CSI-RS resource set configuration or in the CSI resource configuration.

30. The device according to claim 27, wherein: The activation time of the TRS refers to the time when the terminal device starts measuring the TRS; The measuring unit is configured to start measuring the TRS at a third time if the Scell ​​satisfies the first condition; wherein, The third time is the time when the terminal device receives the second MAC CE; or, The third time is the time when the terminal device receives the PDSCH corresponding to the second MAC CE; or, The third time is the time when the terminal device receives the second MAC CE plus a time offset; or, The third time is the time when the terminal device receives the PDSCH corresponding to the first MAC CE plus the time offset; or, The third time is the time when the terminal device feeds back the HARQ ACK information corresponding to the second MAC CE; or, The third time is the time when the terminal device feeds back the HARQ ACK information corresponding to the second MAC CE plus the time offset.

31. The device according to claim 27 or 28, wherein: The first activation instruction also includes a third MAC CE, and the third MAC CE performs activation and deactivation instructions based on the CSI-RS resource set or CSI-RS resource of the specified SCell.

32. The device according to claim 31, wherein The third MAC CE includes a serving cell identifier; The third MAC CE is used to activate the TRS on the first activated BWP of the designated Scell, where the designated Scell ​​is determined based on the serving cell identifier.

33. The device according to claim 31, wherein The third MAC CE includes a serving cell identifier and a TRS resource set identifier; The third MAC CE is used to activate a designated TRS on a first activated BWP of a designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, and the designated TRS is determined based on the TRS resource set identifier.

34. The device according to claim 31, wherein The third MAC CE includes a serving cell identifier and a BWP identifier; The third MAC CE is used to activate the TRS on the designated BWP of the designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, and the designated BWP is determined based on the BWP identifier.

35. The device according to claim 31, wherein The third MAC CE includes a serving cell identifier, a BWP identifier, and a TRS resource set identifier; The third MAC CE is used to activate a designated TRS on a designated BWP of a designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, the designated BWP is determined based on the BWP identifier, and the designated TRS is determined based on the TRS resource set identifier.

36. The device according to any one of claims 32 to 35, wherein: The third MAC CE also includes: a TCI state identifier.

37. The device according to claim 27 or 30, wherein: The Scell ​​satisfies the first condition and further includes at least one of the following: The first active BWP of the Scell ​​is not set to the dormant BWP; The first activated BWP of a Scell ​​is configured with a TRS and the TRS is used for Scell ​​activation.

38. The device according to claim 30, wherein: The value of the time offset is a fixed value or is configured for the network device.

39. The device according to claim 38, wherein When the value of the time offset is a fixed value, the value of the time offset is associated with the capability of the terminal device.

40. A device for triggering TRS activation, applied to a network device, the device comprising: A sending unit, configured to send a first activation instruction to a terminal device, wherein the first activation instruction is used to activate a TRS, and the TRS is used for fast activation of a Scell; Sending a TRS, wherein the TRS is used for the terminal device to perform time and frequency synchronization with the Scell; the first activation instruction includes a first MAC CE and a second MAC CE, the first MAC CE is an Scell ​​activation and deactivation MAC CE, and the second MAC CE is a TRS activation and deactivation MAC CE; the second MAC CE is transmitted simultaneously with the first MAC CE; The sending unit is further used to send a first RRC signaling to the terminal device, where the first RRC signaling includes TRS configuration information, where the TRS configuration information includes first indication information, where the first indication information is used to indicate a type of TRS and / or a purpose of the TRS, where the type of the TRS and / or the purpose of the TRS is used to determine whether the TRS is used for Scell ​​fast activation; The TRS configuration information further includes second indication information, where the second indication information is used to indicate the number of transmissions after the TRS is activated; The second MAC CE includes N1 bits, where N1 is a positive integer, and the N1 bits correspond to the N1 Scells one by one. The value of each bit is used to indicate whether the Scell ​​corresponding to the bit activates the TRS, and the TRS is used for fast activation of the Scell. The first MAC CE includes N2 bits, where N2 is a positive integer greater than or equal to N1, and the N2 bits correspond one-to-one to the N2 Serving cells, and the value of each bit is used to indicate whether the serving cell Servingcell corresponding to the bit is activated; The N1 Scells are serving cells that meet the first condition among the N2 serving cells; The N1 bits are located after the N2 bits; The N1 bits correspond one-to-one to the N1 Scells in order from low to high according to the serving cell indexes in order from small to large; The Scell ​​satisfies the first condition, including: the Scell ​​changes from a deactivated state to an activated state; The TRS activated by the Scell ​​is a TRS configured on the BWP indicated by the identifier of the first activated BWP corresponding to the Scell.

41. The device according to claim 40, wherein The TRS configuration information also includes at least one of the following: third indication information, where the third indication information is used to indicate a sending interval of the TRS; Fourth indication information, where the fourth indication information is used to indicate a time offset.

42. The device according to claim 40 or 41, wherein The first RRC signaling includes a non-zero power CSI-RS resource set configuration and a CSI resource configuration, The TRS configuration information is configured in the non-zero power CSI-RS resource set configuration or in the CSI resource configuration.

43. The device according to claim 40, wherein: The activation time of the TRS refers to the time when the network device starts sending the TRS; The sending unit is configured to start sending the TRS at a third time if the Scell ​​meets the first condition; wherein, The third time is the time when the network device finishes sending the second MAC CE; or, The third time is the time when the network device finishes sending the PDSCH corresponding to the second MAC CE; or, The third time is the time when the network device finishes sending the second MAC CE plus a time offset; or, The third time is the time when the network device finishes sending the PDSCH corresponding to the first MAC CE plus the time offset; or, The third time is the time when the network device receives the HARQ ACK information corresponding to the second MAC CE; or, The third time is the time when the network device receives the HARQ ACK information corresponding to the second MAC CE plus the time offset.

44. The device according to claim 40 or 41, wherein The first activation instruction is a third MAC CE, and the third MAC CE performs activation and deactivation instructions based on a CSI-RS resource set or CSI-RS resource of a specified SCell.

45. The device according to claim 44, wherein The third MAC CE includes a serving cell identifier; The third MAC CE is used to activate the TRS on the first activated BWP of the designated Scell, where the designated Scell ​​is determined based on the serving cell identifier.

46. ​​The device according to claim 44, wherein The third MAC CE includes a serving cell identifier and a TRS resource set identifier; The third MAC CE is used to activate a designated TRS on a first activated BWP of a designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, and the designated TRS is determined based on the TRS resource set identifier.

47. The apparatus of claim 44, wherein: The third MAC CE includes a serving cell identifier and a BWP identifier; The third MAC CE is used to activate the TRS on the designated BWP of the designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, and the designated BWP is determined based on the BWP identifier.

48. The apparatus of claim 44, wherein: The third MAC CE includes a serving cell identifier, a BWP identifier, and a TRS resource set identifier; The third MAC CE is used to activate a designated TRS on a designated BWP of a designated Scell, where the designated Scell ​​is determined based on the serving cell identifier, the designated BWP is determined based on the BWP identifier, and the designated TRS is determined based on the TRS resource set identifier.

49. The device according to any one of claims 45 to 48, wherein The third MAC CE also includes: a TCI state identifier.

50. The apparatus of claim 40 or 43, wherein: The Scell ​​satisfies the first condition and further includes at least one of the following: The first active BWP of the Scell ​​is not set to the dormant BWP; The first activated BWP of a Scell ​​is configured with a TRS and the TRS is used for Scell ​​activation.

51. The apparatus of claim 43, wherein: The value of the time offset is a fixed value or is configured for the network device.

52. The apparatus of claim 51, wherein: When the value of the time offset is a fixed value, the value of the time offset is associated with the capability of the terminal device.

53. A terminal device, comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 13.

54. A network device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 14 to 26.

55. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 13.

56. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 14 to 26.

57. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 13.

58. A computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 14 to 26.

59. A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method of any one of claims 1 to 13.

60. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 14 to 26.

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