Cell activation method, terminal, network device, computer readable medium and product

Abstract

The present application proposes a cell activation method, a terminal, a network device, a computer readable medium and a product, and relates to the technical field of communications, the cell activation method comprising: determining at least one target tracking reference signal corresponding to a to-be-activated secondary cell, the target tracking reference signal being used for activating the to-be-activated secondary cell; receiving at least one target tracking reference signal corresponding to the to-be-activated secondary cell sent by the network equipment; and according to the at least one target tracking reference signal corresponding to the to-be-activated secondary cell, performing an activation operation on the to-be-activated secondary cell.

Description

Technical Field

[0001] This application relates to the field of communication technology, specifically to a cell activation method, terminal, network equipment, computer-readable medium, and product. Background Technology

[0002] In wireless communication systems, such as New Radio (NR) systems, to improve network coverage or throughput, base stations can configure multiple carriers for terminals using carrier aggregation (CA) or dual connectivity (DC) for service data transmission. In this scenario, the terminal can receive and transmit data from multiple cells, which typically include a primary cell (PCell) and at least one secondary cell (SCell).

[0003] The 3GPP (3rd Generation Partnership Project) technical protocol specification Release 16 for NR systems already supports the reduction of synchronization signal blocks (SSB-less) for multiple cell carriers in the same frequency band. That is, the base station does not need to send synchronization signal blocks (SSBs) on some cells, and the terminal can perform cell activation operations without receiving SSBs.

[0004] In the 3GPP technical protocol specification R18 version of the NR system, SSB-less operation is further supported for scenarios where multiple cell carriers belong to multiple frequency bands. That is, the cell to be activated and the activated cell belong to different frequency bands. For the purpose of saving power, the base station does not send SSB on the cell to be activated. The terminal can perform the activation operation on the cell to be activated without receiving SSB.

[0005] In related technologies, how to perform activation operations on activated cells without receiving SSBs is a technical problem that urgently needs to be solved. Summary of the Invention

[0006] This application provides a cell activation method, a terminal, a network device, a computer-readable medium, and a product.

[0007] This application provides a cell activation method, which is applied to a terminal. The cell activation method includes:

[0008] Determine at least one target tracking reference signal corresponding to the secondary cell to be activated, the target tracking reference signal being used to activate the secondary cell to be activated;

[0009] Receive at least one target tracking reference signal corresponding to the secondary cell to be activated, sent by the network device;

[0010] An activation operation is performed on the secondary cell to be activated based on the at least one target tracking reference signal corresponding to the secondary cell to be activated.

[0011] This application provides a cell activation method, which is applied to a network device. The cell activation method includes:

[0012] Send a cell activation command to the terminal, the cell activation command including information for instructing to perform an activation operation on at least one secondary cell to be activated;

[0013] At least one target tracking reference signal is sent to the terminal to activate the secondary cell to be activated, so that the terminal performs an activation operation on the secondary cell to be activated according to the at least one target tracking reference signal corresponding to the secondary cell to be activated.

[0014] This application provides a terminal, including: one or more processors; and a memory storing one or more computer programs thereon. When the one or more computer programs are executed by the one or more processors, the one or more processors implement any of the cell activation methods applied to the terminal in this application.

[0015] This application provides a network device, including: one or more processors; and a memory storing one or more computer programs thereon, wherein when the one or more computer programs are executed by the one or more processors, the one or more processors implement any of the cell activation methods applied to the network device in this application.

[0016] This application provides a computer-readable medium storing a computer program that, when executed by a processor, implements any of the cell activation methods described in this application.

[0017] This application provides a computer program product, which includes a computer program that, when executed by a processor, implements any of the cell activation methods described in this application.

[0018] Further details regarding the above embodiments and other aspects of this application, as well as their implementations, are provided in the accompanying drawings, detailed description, and claims. Attached Figure Description

[0019] In the accompanying drawings of the embodiments of this application:

[0020] Figure 1This diagram illustrates a system architecture of a wireless communication system provided in an embodiment of this application.

[0021] Figure 2 This diagram illustrates a flow chart of a cell activation method provided in an embodiment of this application.

[0022] Figure 3 This diagram illustrates a flow chart of a cell activation method provided in an embodiment of this application.

[0023] Figure 4 This diagram illustrates a flow chart of a cell activation method provided in an embodiment of this application.

[0024] Figure 5 This diagram illustrates a block diagram of a terminal provided in an embodiment of this application.

[0025] Figure 6 This illustration shows a block diagram of a network device provided in an embodiment of this application. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0027] This application will be described more fully below with reference to the accompanying drawings; however, the embodiments shown may be embodied in different forms, and this application should not be construed as limited to the embodiments set forth below. Rather, these embodiments are provided so that this application will be thorough and complete, and will enable those skilled in the art to fully understand the scope of this application.

[0028] The accompanying drawings of the embodiments of this application are used to provide a further understanding of the embodiments of this application and constitute a part of the specification. They are used together with the detailed embodiments to explain this application and do not constitute a limitation thereof. The above and other features and advantages will become more apparent to those skilled in the art from the description of the detailed embodiments with reference to the accompanying drawings.

[0029] This application can be described with reference to plan views and / or cross-sectional views using the ideal schematic diagram of this application. Therefore, the example illustrations can be modified according to manufacturing techniques and / or tolerances.

[0030] Where there is no conflict, the various embodiments of this application and the features thereof may be combined with each other.

[0031] The terminology used in this application is for describing specific embodiments only and is not intended to limit the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated enumerated entries. The singular forms "a" and "the" as used herein are also intended to include the plural forms unless the context clearly indicates otherwise. The terms "comprising," "made of," etc., as used herein, specify the presence of the stated feature, integral, step, operation, element, and / or component, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof.

[0032] Unless otherwise specified, all terms used in this application (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this application, and will not be interpreted as having an idealized or overly formal meaning, unless expressly so defined in this application.

[0033] This application is not limited to the embodiments shown in the accompanying drawings, but includes modifications to the configuration based on the manufacturing process. Therefore, the areas illustrated in the drawings are schematic, and the shapes of the areas shown in the drawings illustrate the specific shapes of the areas of the element, but are not intended to be limiting.

[0034] In related technologies, within wireless communication systems such as New Radio (NR) systems, to improve system network coverage or throughput, base stations can configure multiple carriers for terminals via carrier aggregation (CA) or dual connectivity (DC) for service data transmission. In this scenario, the terminal can receive and transmit data from multiple cells, which typically include a primary cell (PCell) and at least one secondary cell (SCell).

[0035] The 3GPP (3rd Generation Partnership Project) technical protocol specification Release 16 for NR systems already supports the reduction of synchronization signal blocks (SSB-less) for multiple cell carriers in the same frequency band. That is, the base station does not need to send synchronization signal blocks (SSBs) on some cells, and the terminal can perform cell activation operations without receiving SSBs.

[0036] In the 3GPP technical protocol specification R18 version of the NR system, SSB-less operation is further supported for scenarios where multiple cell carriers belong to multiple frequency bands. That is, the cell to be activated and the activated cell belong to different frequency bands. For the purpose of saving power, the base station does not send SSB on the cell to be activated. The terminal can perform the activation operation on the cell to be activated without receiving SSB.

[0037] However, current technologies lack technical specifications for performing activation operations on cells to be activated without receiving SSBs. In methods that involve receiving SSBs, the waiting time for receiving the SSB is relatively long, reducing the speed of cell activation. Therefore, how to perform activation operations on cells to be activated without receiving SSBs and reduce cell activation latency is a pressing technical problem that needs to be solved.

[0038] Please see Figure 1 , Figure 1 This application provides a schematic diagram of the system architecture of a wireless communication system according to an embodiment of the present application. Figure 1 As shown, the wireless communication system 100 may include a terminal 101 and a network device 102, and the terminal 101 and the network device 102 may be connected wirelessly.

[0039] In this embodiment, network device 102 can be a device that connects a terminal to a wireless network. This device can be a base station, various wireless access points, or a device in the access network that communicates with the terminal via one or more sectors on the air interface. The base station can be used to convert received air frames to IP packets and act as a router between the terminal and the rest of the access network, which may include an Internet Protocol (IP) network. The base station can also coordinate the management of air interface attributes. For example, the base station can be a base transceiver station (BTS) in Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA), a base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB or eNodeB) in Long Term Evolution (LTE), a relay station or access point, or a gNB in ​​a 5G network, etc., and is not limited thereto.

[0040] In this embodiment, terminal 101 can be a wireless terminal or a wired terminal. The wireless terminal can be a device that provides voice and / or other service data connectivity to a user, such as a handheld device with wireless connectivity or other processing devices connected to a wireless modem. The wireless terminal can communicate with one or more core networks via a wireless access network. The wireless terminal can be a mobile terminal, such as a smartphone, tablet, laptop, smartwatch, mobile phone (or "cellular" phone), and a computer with a mobile terminal. For example, it can be a portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile device that exchanges voice and / or data with the wireless access network. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). Wireless terminals can also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile stations, remote stations, remote terminals, access terminals, user terminals, user agents, user devices, or user equipment. Sensors with network access capabilities are not limited to these terms.

[0041] Based on the aforementioned wireless communication system 100, this application embodiment proposes a cell activation method. The cell activation method of this application embodiment can be... Figure 1 In the wireless communication system 100 shown, the terminal 101 and the network device 102 communicate through information exchange.

[0042] In the wireless communication system 100, the network device 102 pre-configures multiple cells for the terminal 101. The multiple cells may include a primary cell (PCell) and at least one secondary cell (SCell). Different cells may correspond to different frequency bands, and each cell may be configured with at least one carrier. The cell carrier can be used to carry data transmission between the terminal 101 and the network device 102.

[0043] In a network of multiple cells, the primary cell is an activated cell, and at least one secondary cell exists that needs to be activated. The network device 102 pre-configures multiple tracking reference signals (TRS) for each secondary cell to be activated. When it is necessary to activate at least one secondary cell to be activated, the network device 102 sends a cell activation command to the terminal, instructing the terminal 101 to activate at least one secondary cell to be activated. The terminal 101 determines which tracking reference signals are used to activate the secondary cell to be activated according to predefined rules or according to the instructions of the network device 102. The terminal receives the TRS sent by the network device 102 on the secondary cell to be activated, which determines the TRS to be used to activate the secondary cell. The terminal 101 completes the activation operation of the secondary cell to be activated according to the received TRS.

[0044] According to the cell activation method provided in the embodiments of this application, when performing an activation operation on a secondary cell to be activated, the terminal first determines the target tracking reference signal (TRS) used to activate the secondary cell to be activated, and receives the target tracking reference signal (TRS) sent by the network device. Based on the target tracking reference signal (TRS), the activation operation of the secondary cell to be activated is completed, thereby realizing the activation operation of reducing the synchronization signal block (SSB) of the secondary cell to be activated without receiving the synchronization signal block (SSB).

[0045] Figure 2 This illustration shows a flowchart of a cell activation method provided in an embodiment of this application. This cell activation method can be applied to a terminal, meaning it is executed on the terminal side. Figure 2 As shown, the cell activation method in this application embodiment includes, but is not limited to, the following steps.

[0046] Step S21: Determine at least one target tracking reference signal corresponding to the secondary cell to be activated. The target tracking reference signal is used to activate the secondary cell to be activated.

[0047] In this embodiment of the application, the network device pre-configures multiple cells for the terminal. The multiple cells may include a primary cell and at least one secondary cell. Different cells may correspond to different frequency bands, and each cell may be configured with at least one carrier. The cell carrier can be used to carry data transmission between the terminal and the network device.

[0048] In a network of multiple cells, the primary cell is the activated cell, and at least one secondary cell exists that needs to be activated. The network device pre-configures multiple tracking reference signals (TRS) for each secondary cell to be activated. When it is necessary to activate at least one secondary cell to be activated, the terminal first determines at least one target tracking reference signal to activate the secondary cell to be activated.

[0049] In this embodiment of the application, the terminal can determine which tracking reference signals are used to activate the secondary cell to be activated according to predefined rules or instructions from the network device, that is, determine at least one target tracking reference signal corresponding to the secondary cell to be activated.

[0050] Step S22: Receive at least one target tracking reference signal corresponding to the secondary cell to be activated, sent by the network device.

[0051] In this embodiment of the application, after the terminal determines at least one target tracking reference signal corresponding to the secondary cell to be activated, the network device sends at least one target tracking reference signal corresponding to the secondary cell to be activated on the secondary cell to be activated, and the terminal receives at least one target tracking reference signal corresponding to the secondary cell to be activated sent by the network device.

[0052] In some embodiments, the activation operation of the cell to be activated is the activation operation of reducing the synchronization signal block (SSB-less). Therefore, the network device does not send the synchronization signal block (SSB) on the secondary cell to be activated, but only sends the tracking reference signal.

[0053] Step S23: Activate the secondary cell to be activated based on at least one target tracking reference signal corresponding to the secondary cell to be activated.

[0054] In this embodiment of the application, the activation operation of the secondary cell to be activated based on at least one target tracking reference signal corresponding to the secondary cell to be activated may include: performing fine automatic gain control (AGC) adjustment and calibration operation, fine time synchronization or tracking operation, and fine frequency synchronization or tracking operation on the secondary cell to be activated based on at least one target tracking reference signal corresponding to the secondary cell to be activated, thereby activating the secondary cell to be activated.

[0055] In some embodiments, when multiple secondary cells to be activated need to be activated, the terminal can perform the activation process for each secondary cell to be activated in parallel for the multiple secondary cells to be activated, thereby effectively reducing the activation time delay of the secondary cells to be activated. The activation process for each secondary cell to be activated includes, but is not limited to, the steps S21 to S23 described above.

[0056] According to the cell activation method of this application embodiment, when performing an activation operation on a secondary cell to be activated, the terminal first determines the target tracking reference signal (TRS) used to activate the secondary cell to be activated, and receives the target tracking reference signal (TRS) sent by the network device. Based on the target tracking reference signal (TRS), the activation operation of the secondary cell to be activated is completed, thereby realizing the activation operation of reducing the synchronization signal block (SSB) of the secondary cell to be activated without receiving the synchronization signal block (SSB).

[0057] Figure 3 This illustration shows a flowchart of a cell activation method provided in an embodiment of this application. This cell activation method can be applied to a terminal, meaning it is executed on the terminal side. Figure 3 As shown, the cell activation method in this application embodiment includes, but is not limited to, the following steps.

[0058] Step S31: Receive a cell activation command sent by the network device. The cell activation command includes information indicating that an activation operation should be performed on at least one secondary cell to be activated.

[0059] In this embodiment of the application, the network device pre-configures multiple cells for the terminal. The multiple cells may include a primary cell and at least one secondary cell. Different cells may correspond to different frequency bands, and each cell may be configured with at least one carrier. The cell carrier can be used to carry data transmission between the terminal and the network device.

[0060] In a network of cells, the primary cell is the activated cell, and at least one secondary cell exists that needs to be activated. The network device pre-configures multiple tracking reference signals (TRS) for each secondary cell to be activated. When it is necessary to activate at least one secondary cell to be activated, the network device sends a cell activation command to the terminal, instructing the terminal to activate at least one secondary cell to be activated. The terminal receives the cell activation command sent by the network device.

[0061] In some embodiments, the network device can send a cell activation command to the terminal through an activated cell (such as an activated primary cell or an activated secondary cell), and the terminal can receive the cell activation command sent by the network device through the activated cell.

[0062] In some embodiments, the cell activation command can be any of a Media Access Control (MAC) Control Element (CE), Downlink Control Information (DCI), or Radio Resource Control (RRC) signaling. That is, the network device can send the cell activation command via MAC CE, DCI, or RRC to instruct the terminal to activate at least one secondary cell to be activated. The cell activation command may include information indicating that at least one secondary cell to be activated should be activated, such as the cell identifier of the cell to be activated.

[0063] Step S32: Determine at least one target tracking reference signal corresponding to the secondary cell to be activated. The target tracking reference signal is used to activate the secondary cell to be activated.

[0064] In this embodiment, after receiving the cell activation command from the network device, the terminal needs to perform an activation operation on the cell to be activated indicated in the cell activation command. Since the network device pre-configures multiple tracking reference signals for each secondary cell to be activated, before performing the activation operation on the secondary cell to be activated, it is necessary to determine and receive the target tracking reference signal used to activate the secondary cell to be activated, that is, to determine which tracking reference signals among the multiple tracking reference signals pre-configured by the network device for the secondary cell to be activated are used to activate the secondary cell to be activated.

[0065] In this embodiment of the application, the terminal can determine which tracking reference signals are used to activate the secondary cell to be activated according to predefined rules or instructions from the network device, that is, determine at least one target tracking reference signal corresponding to the secondary cell to be activated.

[0066] In some embodiments, when determining a target tracking reference signal, the determined information may be used to represent or identify the target tracking reference signal. This information may be identification information of the target tracking reference signal, which uniquely identifies the tracking reference signal, such as an index of the tracking reference signal, an identification (ID) of the tracking reference signal, etc.

[0067] In some embodiments, the information used to represent or identify the target tracking reference signal may also be the identification information of a synchronization signal block (SSB) pre-configured by the network device that corresponds to the target tracking reference signal and has a quasi-synchronous positional relationship. The identification information of the synchronization signal block (SSB) is used to uniquely identify the synchronization signal block (SSB), such as the index of the synchronization signal block (SSB), the identification (ID) of the synchronization signal block (SSB), etc. Based on the determined identification information of the synchronization signal block (SSB), by looking up the quasi-synchronous positional relationship between the pre-configured tracking reference signal and the synchronization signal block, the corresponding tracking reference signal can be determined as the target tracking reference signal.

[0068] Step S33: Receive at least one target tracking reference signal corresponding to the secondary cell to be activated, sent by the network device.

[0069] In this embodiment of the application, after the terminal determines at least one target tracking reference signal corresponding to the secondary cell to be activated, the network device sends at least one target tracking reference signal corresponding to the secondary cell to be activated on the secondary cell to be activated, and the terminal receives at least one target tracking reference signal corresponding to the secondary cell to be activated sent by the network device.

[0070] In some embodiments, the activation operation of the cell to be activated is the activation operation of reducing the synchronization signal block (SSB-less). Therefore, the network device does not send the synchronization signal block (SSB) on the secondary cell to be activated, but only sends the tracking reference signal.

[0071] Step S34: Activate the secondary cell to be activated based on at least one target tracking reference signal corresponding to the secondary cell to be activated.

[0072] In this embodiment of the application, the activation operation of the secondary cell to be activated based on at least one target tracking reference signal corresponding to the secondary cell to be activated may include: performing fine automatic gain control (AGC) adjustment and calibration operation, fine time synchronization or tracking operation, and fine frequency synchronization or tracking operation on the secondary cell to be activated based on at least one target tracking reference signal corresponding to the secondary cell to be activated, thereby activating the secondary cell to be activated.

[0073] In some embodiments, when the cell activation command in step S31 indicates that multiple secondary cells to be activated need to be activated, the terminal can perform the activation process for each secondary cell to be activated in parallel for the multiple secondary cells to be activated, thereby effectively reducing the activation time delay of the secondary cells to be activated. The activation process for each secondary cell to be activated includes, but is not limited to, steps S32 to S34 above.

[0074] In some embodiments, the network device may instruct the terminal in the cell activation command which one or more tracking reference signals (TRS) are required to perform the activation operation of each secondary cell to be activated. That is, the cell activation command may also include information indicating at least one target tracking reference signal corresponding to the secondary cell to be activated, and the step of determining at least one target tracking reference signal corresponding to the secondary cell to be activated may further include: obtaining the information indicating at least one target tracking reference signal corresponding to the secondary cell to be activated from the cell activation command.

[0075] In some embodiments, the network device pre-configures multiple tracking reference signals for the cell to be activated. The network device can use a specified field in the cell activation command to indicate the target tracking reference signal required for the activation operation of the secondary cell. That is, the information used in the cell activation command to indicate at least one target tracking reference signal corresponding to the secondary cell to be activated is a field in the cell activation command. For example, if the cell activation command is MAC CE, this field can be a new field in MAC CE or a reused field in MAC CE.

[0076] In some embodiments, this field can be a bitmap, which may include multiple bits, each corresponding to an identification information. This identification information can be used to identify the corresponding tracking reference signal. The value of each bit indicates whether the corresponding tracking reference signal is used as the target tracking reference signal for the secondary cell to be activated. For example, when the value of a bit is set to 1, it indicates that the corresponding tracking reference signal is used as the target tracking reference signal for activating the secondary cell to be activated; when the value of a bit is set to 0, it indicates that the corresponding tracking reference signal is not used as the target tracking reference signal for activating the secondary cell to be activated. Based on the bitmap, the target tracking reference signal required for the activation operation of each secondary cell to be activated indicated by the network device can be determined.

[0077] In some embodiments, the field includes at least one codepoint, each codepoint corresponding to an identification information, which can be used to identify the corresponding tracking reference signal. The value of each codepoint is used to indicate that the corresponding tracking reference signal is used as the target tracking reference signal of the secondary cell to be activated.

[0078] In some embodiments, the network device pre-configures multiple synchronization signal blocks for a reference cell associated with the secondary cell to be activated, and pre-configures a quasi-synchronous positional relationship between the tracking reference signal of the secondary cell to be activated and the synchronization signal blocks of the reference cell. The reference cell is an activated cell pre-configured by the network device for the terminal associated with the secondary cell to be activated, or a default activated cell. Each tracking reference signal pre-configured by the network device for the secondary cell to be activated has corresponding identification information; similarly, each synchronization signal block pre-configured by the network device for the reference cell associated with the secondary cell to be activated has corresponding identification information.

[0079] In some embodiments, the target tracking reference signal determined above can be represented by corresponding identification information, which can be an index of the target tracking reference signal, or an index of a synchronization signal block that is pre-configured by the network device and has a quasi-synchronous positional relationship with the target tracking reference signal.

[0080] In some embodiments, when a cell activation command instructs to activate multiple cells to be activated, the cell activation command may use multiple fields to indicate at least one target tracking reference signal corresponding to each cell to be activated.

[0081] In some embodiments, the network device may instruct the terminal via Radio Resource Control (RRC) signaling which one or more Tracking Reference Signals (TRS) are required to perform the activation operation of each secondary cell to be activated. The step of determining at least one TRS corresponding to the secondary cell to be activated may further include: receiving RRC signaling sent by the network device, the RRC signaling including information indicating at least one TRS corresponding to each secondary cell to be activated.

[0082] In some embodiments, the information used to indicate at least one target tracking reference signal corresponding to each secondary cell to be activated includes at least the identification information described above for identifying the tracking reference signal, such as an index of the tracking reference signal or an index of a synchronization signal block that corresponds to the tracking reference signal and has a quasi-synchronous positional relationship. Based on the information used to indicate at least one target tracking reference signal corresponding to each secondary cell to be activated, the corresponding tracking reference signal can be found and determined through the identification information therein, and used as the determined target tracking reference signal.

[0083] In some embodiments, the terminal can determine, according to predefined rules, which one or more tracking reference signals (TRS) should be used to perform the activation operation of each secondary cell to be activated. The step of determining at least one target tracking reference signal corresponding to the secondary cell to be activated may further include: selecting at least one tracking reference signal that meets the preset conditions from a plurality of tracking reference signals pre-configured by the network device for the secondary cell to be activated, as at least one target tracking reference signal.

[0084] In some embodiments, the preset conditions may include at least one of the following: the index corresponding to the tracking reference signal is the smallest among the multiple tracking reference signal indices pre-configured by the network device for the secondary cell to be activated; the index corresponding to the tracking reference signal is the largest among the multiple tracking reference signal indices pre-configured by the network device for the secondary cell to be activated; or other filtering conditions pre-defined by the system.

[0085] For example, a preset condition includes that the index corresponding to the tracking reference signal is the smallest among the multiple tracking reference signals pre-configured by the network device for the secondary cell to be activated. That is, in the step of determining at least one target tracking reference signal corresponding to the secondary cell to be activated, the tracking reference signal with the smallest corresponding index among the multiple tracking reference signals pre-configured by the network device for the secondary cell to be activated is used as the target tracking reference signal for activating the secondary cell to be activated. Alternatively, a preset condition includes that the index corresponding to the tracking reference signal is the smallest among the multiple tracking reference signals pre-configured by the network device for the secondary cell to be activated. That is, in the step of determining at least one target tracking reference signal corresponding to the secondary cell to be activated, the tracking reference signal with the largest corresponding index among the multiple tracking reference signals pre-configured by the network device for the secondary cell to be activated is used as the target tracking reference signal for activating the secondary cell to be activated.

[0086] In some embodiments, the terminal can determine, according to predefined rules, which one or more tracking reference signals (TRS) should be used to perform the activation operation of each secondary cell to be activated. The step of determining at least one target TRS corresponding to the secondary cell to be activated may further include: selecting at least one tracking reference signal as at least one target TRS from a plurality of tracking reference signals pre-configured by the network device for the secondary cell to be activated. The terminal may select at least one tracking reference signal as at least one target TRS by random selection or according to a predefined selection method.

[0087] In some embodiments, the network device pre-configures multiple tracking reference signals corresponding to the secondary cell to be activated with the same transmission period, and the transmission time offset of the multiple tracking reference signals within a transmission period satisfies any one of the following conditions: the multiple tracking reference signals are transmitted on the same transmission time unit, which is a radio frame, subframe, or slot; the multiple tracking reference signals are transmitted sequentially on consecutive adjacent transmission time units; the order of the transmission time units corresponding to the multiple tracking reference signals is consistent with the order of the transmission time units corresponding to the multiple synchronization signal blocks of the reference cell. The reference cell is an activated cell pre-configured by the network device for the terminal that is associated with the secondary cell to be activated or a default activated cell. The network device pre-configures a quasi-synchronous positional relationship between the tracking reference signals of the secondary cell to be activated and the synchronization signal blocks of the reference cell. Each of the aforementioned multiple synchronization signal blocks is a synchronization signal block that has a quasi-synchronous positional relationship with the corresponding tracking reference signal pre-configured by the network device.

[0088] In some embodiments, each secondary cell to be activated has a reference cell associated with each secondary cell to be activated. The reference cell is an activated cell that is pre-configured by the network device for the terminal and associated with the secondary cell to be activated, or an activated cell that is set by default. The activated cell can be an activated primary cell or an activated secondary cell.

[0089] In some embodiments, the reference cell associated with each secondary cell to be activated is indicated to the terminal in advance by the network device. For example, the network device indicates the information of the reference cell associated with each secondary cell to be activated to the terminal in advance via RRC signaling.

[0090] In some embodiments, the reference cell associated with each secondary cell to be activated is a default reference cell. For example, the reference cell associated with each secondary cell to be activated is by default set to the activated primary cell pre-configured by the network device for the terminal.

[0091] In some embodiments, a one-to-one correspondence is established between a secondary cell to be activated and a reference cell, and different secondary cells to be activated are associated with different reference cells.

[0092] In some embodiments, among a plurality of secondary cells to be activated, some secondary cells to be activated are associated with different reference cells, while some secondary cells to be activated are associated with the same reference cell.

[0093] Understandably, as an activated cell, the reference cell allows network devices to transmit Synchronization Signal Blocks (SSBs). The network device configures multiple SSBs on the reference cell. For the secondary cell to be activated and the corresponding reference cell associated with it, the network device can pre-configure the quasi-colocation (QCL) relationship between the tracking reference signal configured for the secondary cell to be activated and the corresponding SSBs on the associated reference cell. Specifically, there is a one-to-one correspondence between the tracking reference signal configured for the secondary cell to be activated and the corresponding SSB on the associated reference cell, and each tracking reference signal of the secondary cell to be activated corresponds to a specific SSB on the reference cell. The synchronization signal block SSB has a corresponding quasi-synchronous position QCL relationship. The quasi-synchronous position QCL relationship can include the quasi-synchronous position QCL relationship of QCL type A (QCL-Type A), QCL type B (QCL-Type B), QCL type C (QCL-Type C), and QCL type D (QCL-Type D). The existence of a quasi-synchronous position QCL relationship between the tracking reference signal and the corresponding synchronization signal block SSB means that the tracking reference signal and the corresponding synchronization signal block SSB can be quasi-synchronous according to the corresponding QCL type.

[0094] For example, the network device configures multiple tracking reference signals (TRS) on the secondary cell SCell 3 to be activated. The multiple tracking reference signals (TRS) include tracking reference signal TRS 0, tracking reference signal TRS 1, tracking reference signal TRS 2, and tracking reference signal TRS 3. The network device configures multiple synchronization signal blocks (SSBs) on the reference cell Cell 1 associated with the secondary cell SCell 3 to be activated. The multiple synchronization signal blocks (SSBs) include synchronization signal block SSB 0, synchronization signal block SSB 1, synchronization signal block SSB 2, synchronization signal block SSB 3, synchronization signal block SSB 4, synchronization signal block SSB 5, synchronization signal block SSB 6, and synchronization signal block SSB 7. Specifically, the network equipment pre-configures that the tracking reference signal TRS 0 on the secondary cell SCell 3 to be activated has a QCL relationship with the synchronization signal block SSB 0 on the reference cell Cell 1, and the QCL type is QCL type C (QCL-Type C); the network equipment pre-configures that the tracking reference signal TRS1 on the secondary cell SCell 3 to be activated has a QCL relationship with the synchronization signal block SSB1 on the reference cell Cell 1, and the QCL type is QCL type C (QCL-Type C); the network equipment pre-configures that the tracking reference signal TRS2 on the secondary cell SCell 3 to be activated has a QCL relationship with the synchronization signal block SSB2 on the reference cell Cell 1, and the QCL type is QCL type C (QCL-Type C); the network equipment pre-configures that the tracking reference signal TRS 3 on the secondary cell SCell 3 to be activated has a QCL relationship with the synchronization signal block SSB 3 on the reference cell Cell 1, and the QCL type is QCL type C (QCL-Type C).

[0095] It is understandable that the order of the transmission time units corresponding to the multiple tracking reference signals mentioned above is consistent with the order of the transmission time units corresponding to the multiple synchronization signal blocks of the reference cell. This means that the order of the transmission time units of each tracking reference signal pre-configured by the network device for the secondary cell to be activated is the same as the order of the transmission time units of the synchronization signal blocks with QCL relationships on the associated reference cell. For example, the order of the transmission time units of tracking reference signals TRS 0, TRS1, TRS2, and TRS 3 configured on the secondary cell to be activated (SCell 3) corresponds to the same order of the transmission time units of synchronization signal blocks SSB 0, SSB 1, SSB 2, and SSB 3 configured on the associated reference cell (Cell 1).

[0096] In some embodiments, the quasi-co-location QCL relationship and QCL type between the tracking reference signal and the corresponding synchronization signal block can be configured in the Transmission Configuration Indication State (TCI State) of the reference cell.

[0097] In some embodiments, the terminal can determine which one or more tracking reference signals (TRS) are needed to perform the activation operation of each secondary cell to be activated based on the activated Transmission Configuration Indication State (TCI State) on the reference cell indicated by the network device. The step of determining at least one target tracking reference signal corresponding to the secondary cell to be activated may further include: obtaining the current activated TCI State of a reference cell pre-configured by the network device, where the reference cell is an activated cell pre-configured by the network device for the terminal and associated with the secondary cell to be activated, or a default activated cell; and determining at least one target tracking reference signal corresponding to the secondary cell to be activated based on the first source reference signal (Source RS) in the current activated TCI State.

[0098] Here, "current" refers to the time unit in which the terminal receives the cell activation command. The current activated transmission configuration indication state refers to the activated transmission configuration indication state of the reference cell indicated by the network device when the terminal receives the cell activation command. The time unit of the cell activation command can be a radio frame, subframe, slot, or OFDM (Orthogonal Frequency Division Multiplexing) symbol.

[0099] In some embodiments, the step of determining at least one target tracking reference signal corresponding to the secondary cell to be activated based on the first source reference signal in the currently activated transmission configuration indication state may further include: when the first source reference signal is a synchronization signal block of the reference cell, determining the tracking reference signal that has a quasi-co-positional relationship with the synchronization signal block among the multiple tracking reference signals pre-configured by the network device for the secondary cell to be activated as the target tracking reference signal; or, when the first source reference signal is the Channel State Information-Reference Signal (CSI-RS) of the reference cell, determining the second source reference signal corresponding to the CSI-RS, wherein the second source reference signal is a synchronization signal block of the reference cell; and determining the tracking reference signal that has a quasi-co-positional relationship with the synchronization signal block corresponding to the CSI-RS among the multiple tracking reference signals pre-configured by the network device for the secondary cell to be activated as the target tracking reference signal. The second source reference signal corresponding to the CSI-RS of the reference cell can be obtained from the configuration of the CSI-RS of the reference cell.

[0100] In some embodiments, the currently activated Transmission Configuration Indication State is the Transmission Configuration Indication State (TCI State) for the Physical Downlink Control Channel (PDCCH) or the Physical Downlink Shared Channel (PDSCH).

[0101] In some embodiments, the currently activated transport configuration indication state is sent to the terminal by the network device via Radio Resource Control (RRC) signaling, Media Access Control (MAC) control element (MAC CE), or Downlink Control Information (DCI).

[0102] In some application scenarios, multi-cell carrier deployment can take various forms. For example, multiple cell carriers may be deployed on multiple Remote Radio Units (RRUs) or Active Antenna Units (AAUs) in the same physical area, known as co-location deployment. Alternatively, multiple cell carriers may be deployed in different physical areas, known as non-co-location deployment. In the case of co-location deployment, the terminal may use the same set of radio frequency and / or transceiver antennas and / or baseband resources to process the transmit and receive signals on multiple cell carriers. Because multiple cell carriers are deployed in the same physical area, some channel characteristics or transmit beam directions of the multiple cell carriers may be the same. Therefore, the downlink signals (e.g., pilot signals) received by the terminal from multiple cell carriers may satisfy certain QCL characteristic consistency. Utilizing such QCL characteristic consistency, when performing cell activation, the terminal can share some QCL characteristics of the activated cell for the secondary cell to be activated, thereby accelerating the secondary cell activation process and also achieving certain energy-saving effects.

[0103] Therefore, in some embodiments, when performing an activation operation on the secondary cell to be activated, the activation operation can be performed in conjunction with the configuration information of the reference cell associated with the secondary cell to be activated. Since there is a QCL relationship between the reference cell and the secondary cell to be activated, and the signal reception power deviation and signal reception time deviation between the reference cell and the secondary cell to be activated meet certain conditions, when the terminal performs the activation operation of reducing the synchronization signal block SSB-less on the secondary cell to be activated, it can combine the configuration information of the reference cell, such as the signal reception power, signal reception time, and QCL relationship of the reference cell, thereby accelerating the activation operation process of the secondary cell to be activated and reducing the activation latency of the secondary cell to be activated.

[0104] In some embodiments, the step of performing an activation operation on a secondary cell to be activated based on at least one target tracking reference signal corresponding to the secondary cell to be activated may further include: performing an activation operation on the secondary cell to be activated based on at least one target tracking reference signal corresponding to the secondary cell to be activated and configuration information of a reference cell corresponding to the secondary cell to be activated; the reference cell is an activated cell pre-configured by the network device for the terminal and associated with the secondary cell to be activated. The configuration information of the reference cell may include the signal received power, signal received time, and QCL relationship of the reference cell, etc.

[0105] In some embodiments, before performing an activation operation on the secondary cell to be activated based on at least one target tracking reference signal corresponding to the secondary cell to be activated and configuration information of the reference cell corresponding to the secondary cell to be activated, the cell activation method further includes: receiving radio resource control signaling sent by a network device, wherein the radio resource control signaling includes information for indicating the reference cell corresponding to each of the at least one secondary cell to be activated. The reference cell corresponding to each secondary cell to be activated may be a different reference cell or the same reference cell.

[0106] In some embodiments, the network device instructs via radio resource control signaling to use a designated activated cell (such as an activated primary cell or an activated secondary cell) as the reference cell for each secondary cell to be activated, that is, the reference cell for each secondary cell to be activated is the designated activated cell.

[0107] In some embodiments, before performing an activation operation on the secondary cell to be activated based on at least one target tracking reference signal corresponding to the secondary cell to be activated and configuration information of a reference cell corresponding to the secondary cell to be activated, the cell activation method further includes: receiving radio resource control signaling sent by a network device, the radio resource control signaling including information for indicating at least one reference cell corresponding to at least one secondary cell to be activated, the number of indicated reference cells being equal to the number of secondary cells to be activated; determining a reference cell corresponding to each secondary cell to be activated, each secondary cell to be activated corresponding to one reference cell.

[0108] In some embodiments, when the number of secondary cells to be activated and the number of reference cells are both one, determining the reference cell corresponding to each secondary cell to be activated includes: determining the indicated reference cell as the reference cell associated with the secondary cell to be activated. In some embodiments, when the number of secondary cells to be activated and the number of reference cells are both multiple, the above step of determining the reference cell corresponding to each secondary cell to be activated includes: sorting the multiple secondary cells to be activated in ascending order of cell number; and associating the multiple reference cells with the multiple secondary cells to be activated in the sorted order one by one. The cell number can be a cell ID, and each cell has a unique cell ID used for differentiation and identification in the network. The cell ID is usually a number used to identify different cells.

[0109] For example, the terminal sorts at least one secondary cell SCell to be activated in ascending order of the corresponding cell ID, and sequentially assigns at least one reference cell indicated by the network device to each of the sorted secondary cell SCells to be activated, thereby determining the reference cell corresponding to each secondary cell to be activated.

[0110] In some embodiments, before performing an activation operation on a to-be-activated secondary cell according to the at least one target tracking reference signal corresponding to the to-be-activated secondary cell and the configuration information of the reference cell corresponding to the to-be-activated secondary cell, the cell activation method further includes: receiving radio resource control signaling sent by a network device, the radio resource control signaling including information for indicating at least one reference cell corresponding to at least one to-be-activated secondary cell, and the number of indicated reference cells being less than the number of to-be-activated secondary cells; determining the reference cell corresponding to each to-be-activated secondary cell, each reference cell being associated with one to-be-activated secondary cell, and the reference cells corresponding to the remaining unassociated to-be-activated secondary cells being default set to the activated primary cell pre-configured by the network device for the terminal.

[0111] In some embodiments, the number of reference cells indicated by the network device is m, and the number of to-be-activated secondary cells is n, where m < n. The step of determining the reference cell corresponding to each to-be-activated secondary cell may further include: sorting the n to-be-activated secondary cells in ascending order of cell number; associating the m reference cells with the first m to-be-activated secondary cells in the sorting one by one; and default setting the reference cells corresponding to the (m + 1)-th to the n-th to-be-activated secondary cells in the sorting to the activated primary cell pre-configured by the network device for the terminal.

[0112] For example, when the number of reference cells (m) indicated by the network device through RRC signaling is less than the number of to-be-activated secondary cells (SCells) (n), i.e., m < n, the terminal sorts the n to-be-activated secondary cells (SCells) in ascending order of the corresponding cell ID, and sequentially associates the m reference cells indicated by the network device with the first m to-be-activated secondary cells (SCells) in the sorting, each reference cell corresponding to one to-be-activated secondary cell (SCell). For the (m + 1)-th to the n-th to-be-activated secondary cells (SCells) in the sorting, the corresponding reference cells are default set to the activated primary cell (PCell).

[0113] In some embodiments, the radio resource control signaling for indicating the reference cell corresponding to the to-be-activated secondary cell and the radio resource control signaling for indicating the target tracking reference signal corresponding to the to-be-activated secondary cell may be the same radio resource control signaling, that is, the network device may indicate the reference cell corresponding to the to-be-activated secondary cell and indicate the target tracking reference signal corresponding to the to-be-activated secondary cell through the same radio resource control signaling.

[0114] In some embodiments, the network device does not indicate any activated cell as a reference cell, and the terminal may specify the activated cell configured by default as the reference cell corresponding to each to-be-activated secondary cell. For example, the reference cell corresponding to each to-be-activated secondary cell in at least one to-be-activated secondary cell is default set to the activated primary cell pre-configured by the network device for the terminal.

[0115] In some application scenarios, the activation operation of the secondary cell to be activated may include: performing Layer 3 (L3) measurements to determine AGC gain and performing AGC calibration; performing time-frequency synchronization to determine basic time-domain and frequency-domain synchronization information; performing Layer 1 (L1) measurements to report beamselection; and performing CSI measurements and reporting to help network devices understand CSI information. All of these activation operations rely on pilot signals, such as the Tracking Reference Signal (TRS), transmitted by the network devices on the cell to be activated.

[0116] In some embodiments, when a terminal performs an activation operation on a secondary cell to be activated, it needs to measure the Target Tracking Reference Signal (TRS) on the secondary cell to be activated, including at least two TRS transmission occurrence measurements, to perform fine AGC calibration and fine time-frequency synchronization or tracking, thereby completing the activation of the secondary cell to be activated. The processing delay of the terminal performing the activation operation on the secondary cell to be activated includes at least the measurement delay of the two TRS transmission occurrences and the delay of radio frequency and / or baseband processing. It is understood that the time interval between the two TRS transmissions is the TRS transmission period, and the processing delay of the activation operation on the secondary cell to be activated can be calculated based on the transmission period of the TRS with the largest corresponding transmission period among multiple TRSs.

[0117] In some embodiments, the processing delay for performing the activation operation on the secondary cell to be activated is calculated based on the transmission period of the target tracking reference signal with the longest corresponding transmission period among at least one target tracking reference signal. The target tracking reference signal with the longest transmission period is the tracking reference signal with the longest transmission period among the target tracking reference signals that have a quasi-synchronous positional relationship with the synchronization signal block of the associated reference cell.

[0118] In some embodiments, the target tracking reference signal is a tracking reference signal transmitted periodically or aperiodically.

[0119] In some embodiments, the target tracking reference signal is a semi-continuously activated or deactivated tracking reference signal.

[0120] Figure 4 This illustration shows a flowchart of a cell activation method provided in an embodiment of this application. This cell activation method can be applied to network devices, meaning it is executed on the network device side. Figure 4 As shown, the cell activation method in this application embodiment includes, but is not limited to, the following steps.

[0121] Step S41: Send a cell activation command to the terminal. The cell activation command includes information indicating that an activation operation should be performed on at least one secondary cell to be activated.

[0122] Step S42: Send at least one target tracking reference signal to the terminal for activating the secondary cell to be activated, so that the terminal performs an activation operation on the secondary cell to be activated according to the at least one target tracking reference signal corresponding to the secondary cell to be activated.

[0123] In some embodiments, the cell activation command is a media access control element.

[0124] In some embodiments, the cell activation command further includes information for indicating at least one target tracking reference signal corresponding to the secondary cell to be activated.

[0125] In some embodiments, before sending at least one target tracking reference signal to the terminal for activating the secondary cell to be activated, the cell activation method further includes: sending radio resource control signaling to the terminal, the radio resource control signaling including information for indicating at least one target tracking reference signal corresponding to the secondary cell to be activated.

[0126] In some embodiments, the radio resource control signaling also includes information for indicating the reference cell corresponding to the secondary cell to be activated.

[0127] For a detailed description of the cell activation method applied to network devices in the embodiments of this application, please refer to the relevant description in the cell activation method applied to terminals in the foregoing embodiments, which will not be repeated here.

[0128] It should be clarified that this application is not limited to the specific configurations and processes described in the above embodiments and shown in the figures. For the sake of convenience and brevity, detailed descriptions of known methods are omitted here and will not be repeated.

[0129] Figure 5 This diagram illustrates a block diagram of a terminal provided in an embodiment of this application.

[0130] like Figure 5 As shown, the terminal includes: at least one processor 501, at least one memory 502, and one or more I / O interfaces 503. The one or more I / O interfaces 503 are connected between the processor 501 and the memory 502. The memory 502 stores one or more computer programs, which are executed by the at least one processor 501 to enable the at least one processor 501 to implement any of the cell activation methods for the terminal described in the above embodiments.

[0131] Figure 6 This illustration shows a block diagram of a network device provided in an embodiment of this application.

[0132] like Figure 6 As shown, the network device includes: at least one processor 601, at least one memory 602, and one or more I / O interfaces 603. The one or more I / O interfaces 603 are connected between the processor 601 and the memory 602. The memory 602 stores one or more computer programs, which are executed by the at least one processor 601 to enable the at least one processor 601 to implement any of the cell activation methods for network devices described in the above embodiments.

[0133] Among them, the processor is a device with data processing capabilities, including but not limited to the central processing unit (CPU); the memory is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and flash memory (FLASH); the I / O interface (read-write interface) is connected between the processor and the memory, enabling information exchange between the memory and the processor, including but not limited to the data bus (Bus).

[0134] This application also provides a computer-readable medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements any of the cell activation methods described in the above embodiments.

[0135] This application also provides a computer program product, which includes a computer program that, when executed by a processor, implements any of the cell activation methods described in the above embodiments.

[0136] Those skilled in the art will understand that all or some of the steps, systems, and devices disclosed above, as functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0137] In hardware implementations, the division between functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be executed by several physical components working together.

[0138] Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit (CPU), digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technique for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory (FLASH) or other disk storage; read-only optical disc (CD-ROM), digital versatile disc (DVD) or other optical disc storage; magnetic cartridges, magnetic tapes, disk storage or other magnetic storage; and any other media that can be used to store desired information and can be accessed by a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0139] This application has disclosed exemplary embodiments, and although specific terminology has been used, it is used and should be interpreted only in a general illustrative sense and is not intended to be limiting. In some instances, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in conjunction with particular embodiments may be used alone, or in combination with features, characteristics, and / or elements described in conjunction with other embodiments, unless otherwise expressly indicated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of this application as set forth by the appended claims.

Claims

1. A cell activation method, applied to a terminal, the cell activation method comprising: Determine at least one target tracking reference signal corresponding to the secondary cell to be activated, the target tracking reference signal being used to activate the secondary cell to be activated; Receive at least one target tracking reference signal corresponding to the secondary cell to be activated, sent by the network device; An activation operation is performed on the secondary cell to be activated based on the at least one target tracking reference signal corresponding to the secondary cell to be activated.

2. The cell activation method according to claim 1, wherein, Before determining at least one target tracking reference signal corresponding to the secondary cell to be activated, the cell activation method further includes: The network device receives a cell activation command, which includes information indicating that at least one secondary cell to be activated should be activated.

3. The cell activation method according to claim 1, wherein, The cell activation command is a media access control element.

4. The cell activation method according to claim 1, wherein, The cell activation command also includes information for indicating at least one target tracking reference signal corresponding to the secondary cell to be activated; Determining at least one target tracking reference signal corresponding to the secondary cell to be activated includes: obtaining information indicating at least one target tracking reference signal corresponding to the secondary cell to be activated from the cell activation command.

5. The cell activation method according to claim 4, wherein, The network device pre-configures multiple tracking reference signals for the cell to be activated. The information used to indicate at least one target tracking reference signal corresponding to the secondary cell to be activated is a field in the cell activation command. The field is a bitmap, which includes multiple bits. Each bit corresponds to an identification information. The identification information is used to identify the corresponding tracking reference signal. The value of each bit is used to indicate whether the corresponding tracking reference signal is used as the target tracking reference signal of the secondary cell to be activated.

6. The cell activation method according to claim 4, wherein, The network device pre-configures multiple tracking reference signals for the cell to be activated. The information used to indicate at least one target tracking reference signal corresponding to the secondary cell to be activated is a field in the cell activation command. The field includes at least one code point, each code point corresponds to an identification information, the identification information is used to identify the corresponding tracking reference signal, and the value of each code point is used to indicate that the corresponding tracking reference signal is used as the target tracking reference signal of the secondary cell to be activated.

7. The cell activation method according to claim 1, wherein, The network device pre-configures multiple synchronization signal blocks for the reference cell associated with the secondary cell to be activated, and the network device pre-configures the quasi-synchronous positional relationship between the tracking reference signal of the secondary cell to be activated and the synchronization signal block of the reference cell. The reference cell is an activated cell pre-configured by the network device for the terminal and associated with the secondary cell to be activated, or an activated cell set by default. The determined target tracking reference signal is represented by corresponding identification information, which is either an index of the target tracking reference signal or an index of a synchronization signal block pre-configured by the network device that has a quasi-synchronous positional relationship with the target tracking reference signal.

8. The cell activation method according to claim 1, wherein, The determination of at least one target tracking reference signal corresponding to the secondary cell to be activated includes: The network device receives radio resource control signaling, which includes information indicating at least one target tracking reference signal corresponding to the secondary cell to be activated.

9. The cell activation method according to claim 1, wherein, The determination of at least one target tracking reference signal corresponding to the secondary cell to be activated includes: According to preset conditions, at least one tracking reference signal that meets the preset conditions is selected from a plurality of tracking reference signals pre-configured by the network device for the secondary cell to be activated, and used as the at least one target tracking reference signal; The preset conditions include at least one of the following: the index corresponding to the tracking reference signal is the smallest among the multiple tracking reference signal indices pre-configured by the network device for the secondary cell to be activated; or the index corresponding to the tracking reference signal is the largest among the multiple tracking reference signal indices pre-configured by the network device for the secondary cell to be activated.

10. The cell activation method according to claim 1, wherein, The determination of at least one target tracking reference signal corresponding to the secondary cell to be activated includes: From a plurality of tracking reference signals pre-configured by the network device for the secondary cell to be activated, at least one tracking reference signal is selected as the at least one target tracking reference signal.

11. The cell activation method according to claim 10, wherein, The multiple tracking reference signals have the same transmission period, and the transmission time offset of the multiple tracking reference signals within a transmission period satisfies any one of the following conditions: The multiple tracking reference signals are transmitted on the same transmission time unit, which is a radio frame, a subframe, or a time slot. The multiple tracking reference signals are transmitted sequentially in consecutive adjacent transmission time units; The order of the transmission time units corresponding to the plurality of tracking reference signals is consistent with the order of the transmission time units corresponding to the plurality of synchronization signal blocks of the reference cell. The reference cell is an activated cell that the network device pre-configures for the terminal and is associated with the secondary cell to be activated. The network device pre-configures the quasi-synchronous positional relationship between the tracking reference signals of the secondary cell to be activated and the synchronization signal blocks of the reference cell. Each of the plurality of synchronization signal blocks is a synchronization signal block that has a quasi-synchronous positional relationship with the corresponding tracking reference signal pre-configured by the network device.

12. The cell activation method according to claim 1, wherein, The determination of at least one target tracking reference signal corresponding to the secondary cell to be activated includes: Obtain the current activated transmission configuration indication status of the reference cell pre-configured by the network device. The reference cell is an activated cell pre-configured by the network device for the terminal that corresponds to the secondary cell to be activated, or an activated cell set by default. Based on the first source reference signal in the currently activated transmission configuration indication state, at least one target tracking reference signal corresponding to the secondary cell to be activated is determined.

13. The cell activation method according to claim 12, wherein, The step of determining at least one target tracking reference signal corresponding to the secondary cell to be activated based on the first source reference signal in the currently activated transmission configuration indication state includes: When the first source reference signal is a synchronization signal block of the reference cell, the tracking reference signal that has a quasi-synchronous positional relationship with the synchronization signal block among the multiple tracking reference signals pre-configured by the network device for the secondary cell to be activated is determined as the target tracking reference signal; or... When the first source reference signal is the channel state information reference signal of the reference cell, the second source reference signal corresponding to the channel state information reference signal is determined, and the second source reference signal is a synchronization signal block of the reference cell; The tracking reference signal that has a quasi-synchronous positional relationship with the synchronization signal block corresponding to the channel state information reference signal among the multiple tracking reference signals pre-configured by the network device for the secondary cell to be activated is determined as the target tracking reference signal.

14. The cell activation method according to claim 12, wherein, The currently activated transmission configuration indication status is the transmission configuration indication status for the physical downlink control channel or the physical downlink shared channel.

15. The cell activation method according to claim 12, wherein, The currently activated transmission configuration indication status is sent to the terminal by the network device through radio resource control signaling, media access control control elements, or downlink control information.

16. The cell activation method according to claim 1, wherein, The step of performing an activation operation on the secondary cell to be activated based on the at least one target tracking reference signal corresponding to the secondary cell to be activated includes: An activation operation is performed on the secondary cell to be activated based on the at least one target tracking reference signal corresponding to the secondary cell to be activated and the configuration information of the reference cell corresponding to the secondary cell to be activated; the reference cell is an activated cell that the network device pre-configures for the terminal and is associated with the secondary cell to be activated or a default activated cell.

17. The cell activation method according to claim 16, wherein, Before performing an activation operation on the secondary cell to be activated based on the at least one target tracking reference signal corresponding to the secondary cell to be activated and the configuration information of the reference cell corresponding to the secondary cell to be activated, the cell activation method further includes: The network device receives radio resource control signaling, which includes information indicating a reference cell corresponding to each of the at least one secondary cell to be activated.

18. The cell activation method according to claim 16, wherein, Before performing an activation operation on the secondary cell to be activated based on the at least one target tracking reference signal corresponding to the secondary cell to be activated and the configuration information of the reference cell corresponding to the secondary cell to be activated, the cell activation method further includes: The network device receives radio resource control signaling, which includes information indicating at least one reference cell corresponding to the at least one secondary cell to be activated, wherein the number of indicated reference cells is equal to the number of secondary cells to be activated. A reference cell is determined for each of the secondary cells to be activated, and each secondary cell to be activated corresponds to one reference cell.

19. The cell activation method according to claim 18, wherein, When the number of the secondary cell to be activated and the number of the reference cell are both 1, determining the reference cell corresponding to each secondary cell to be activated includes: determining the reference cell as the reference cell associated with the secondary cell to be activated. When the number of the to-be-activated secondary cells and the number of the reference cells are both multiple, determining the reference cell corresponding to each to-be-activated secondary cell includes: Sorting the multiple to-be-activated secondary cells in ascending order of cell numbers; Associating each of the multiple reference cells with one of the multiple to-be-activated secondary cells in the sorting one by one.

20. The cell activation method according to claim 16, wherein, Before performing an activation operation on the to-be-activated secondary cell according to the at least one target tracking reference signal corresponding to the to-be-activated secondary cell and the configuration information of the reference cell corresponding to the to-be-activated secondary cell, the cell activation method further includes: Receiving a radio resource control signaling sent by the network device, where the radio resource control signaling includes information for indicating at least one reference cell corresponding to the at least one to-be-activated secondary cell, and the number of the indicated reference cells is less than the number of the to-be-activated secondary cells; Determining the reference cell corresponding to each to-be-activated secondary cell, associating one reference cell with one to-be-activated secondary cell, and by default, setting the reference cells corresponding to the remaining unassociated to-be-activated secondary cells as the already-activated primary cell pre-configured by the network device for the terminal.

21. The cell activation method according to claim 20, wherein, The number of the reference cells is m, and the number of the to-be-activated secondary cells is n, where m < n. Determining the reference cell corresponding to each to-be-activated secondary cell includes: Sorting the n to-be-activated secondary cells in ascending order of cell numbers; Associating each of the m reference cells with one of the first m to-be-activated secondary cells in the sorting one by one; By default, setting the reference cells corresponding to the (m + 1)-th to the n-th to-be-activated secondary cells in the sorting as the already-activated primary cell pre-configured by the network device for the terminal.

22. The cell activation method according to claim 16, wherein, By default, setting the reference cell corresponding to each to-be-activated secondary cell in the at least one to-be-activated secondary cell as the already-activated primary cell pre-configured by the network device for the terminal.

23. The cell activation method according to claim 1, wherein, The processing delay of the activation operation is calculated according to the transmission period of the target tracking reference signal with the largest corresponding transmission period among the at least one target tracking reference signals.

24. The cell activation method according to claim 1, wherein, The target tracking reference signal is a tracking reference signal sent periodically or non-periodically; or The target tracking reference signal is a tracking reference signal with semi-persistent activation or deactivation.

25. A cell activation method, which is applied to a network device. The cell activation method includes: Sending a cell activation command to a terminal, where the cell activation command includes information for indicating an activation operation on at least one to-be-activated secondary cell; Sending at least one target tracking reference signal for activating the to-be-activated secondary cell to the terminal, so that the terminal performs an activation operation on the to-be-activated secondary cell according to the at least one target tracking reference signal corresponding to the to-be-activated secondary cell.

26. The cell activation method according to claim 25, wherein, The cell activation command is a media access control control element.

27. The cell activation method according to claim 25, wherein, The cell activation command further includes information for indicating at least one target tracking reference signal corresponding to the to-be-activated secondary cell.

28. The cell activation method according to claim 25, wherein, Before sending at least one target tracking reference signal to the terminal for activating the secondary cell to be activated, the cell activation method further includes: The terminal is sent radio resource control signaling, which includes information indicating at least one target tracking reference signal corresponding to the secondary cell to be activated.

29. The cell activation method according to claim 28, wherein, The radio resource control signaling also includes information for indicating the reference cell corresponding to the secondary cell to be activated.

30. A terminal, wherein, include: One or more processors; A memory having stored thereon one or more computer programs that, when executed by one or more processors, cause the one or more processors to implement the cell activation method as described in any one of claims 1 to 24.

31. A network device, wherein, include: One or more processors; A memory having stored thereon one or more computer programs that, when executed by one or more processors, cause the one or more processors to implement the cell activation method as described in any one of claims 25 to 29.

32. A computer-readable medium, wherein, The computer-readable medium stores a computer program that, when executed by a processor, implements the cell activation method as described in any one of claims 1 to 24, or implements the cell activation method as described in any one of claims 25 to 29.

33. A computer program product comprising a computer program that, when executed by a processor, implements the cell activation method as described in any one of claims 1 to 24, or implements the cell activation method as described in any one of claims 25 to 29.

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