Cell activation or deactivation method and apparatus

Abstract

In an embodiment of the present invention, a method and an apparatus for cell activation or deactivation are provided, the method including: a terminal device receiving a cell change command transmitted by a network device; and the terminal device activating or deactivating a cell indicated in or associated with the cell change command based on a condition for cell activation or deactivation. According to the embodiment of the present invention, when the terminal device receives the cell change command, or when it receives an (enhanced) secondary cell activation or deactivation MAC CE, or based on the activation or deactivation state of the cell configured by RRC signaling, or based on the activation or deactivation state of a cell group in which the cell configured by RRC signaling is located, or based on a deactivation timer, the activation / deactivation state of the cell can be determined by activating or deactivating the cell indicated in or associated with the cell change command.

Description

[Technical Field]

[0001] The present invention relates to the field of communications. [Background technology]

[0002] In the activation / deactivation of a secondary cell (SCell), if a MAC (Media Access Control) entity configures one or more secondary cells, the configured secondary cells can be activated and deactivated by the network. After a secondary cell is configured, the secondary cell remains in an inactive state unless a higher layer sets the parameter sCellState of the secondary cell to activated.

[0003] Currently, configured secondary cells can be activated or deactivated in the following cases: SCell Activation / Deactivation MAC CE is received; Enhanced SCell Activation / Deactivation MAC CE is received; If the sCellDeactivationTimer timer is configured for each configured secondary cell (except the secondary cell for which the PUCCH is configured (if any)): after the timer expires, the secondary cell associated with it is deactivated; When sCellState is set for each configured secondary cell: when the sCellState is set, after the secondary cell is configured, the secondary cell associated with it is activated; and If scg-State is received: Secondary cells in the SCG (Secondary Cell Group) are deactivated.

[0004] Also, for each configured secondary cell, when the secondary cell is activated, the MAC entity may perform at least one of the following actions: No SRS (Sounding Reference Signal) is transmitted on the secondary cell; Do not report CSI (Channel State Information) of the secondary cell; No transmission on the Uplink Shared Channel (UL-SCH) on the secondary cell; Do not transmit on the Random Access Channel (RACH) on the secondary cell; not monitoring the PDCCH (Physical Downlink Control Channel) on the secondary cell; not monitoring the PDCCH of the secondary cell; No PUCCH (Physical Uplink Control Channel) is transmitted on the secondary cell; and When a secondary cell is deactivated, an ongoing random access procedure (if any) on the secondary cell is aborted.

[0005] Furthermore, for serving cell change via L1 / L2 (Layer 1 / Layer 2) signaling, when a terminal moves from the coverage of one cell to the coverage of another, a serving cell change needs to be performed at some point. Currently, serving cell change is triggered by L3 (Layer 3) measurements and completed by RRC (Radio Resource Control) signaling, with triggered reconfiguration with synchronization and release of SCells (Secondary Cells) for PCell (Primary Cell) and PSCell (Primary Secondary Cell) changes. All cases involve a full L1 (and L2) reset, which may incur longer delays, higher overhead, and longer outage times than beam switching mobility. The goal of L1 / L2 mobility enhancement is to ensure serving cell change through L1 / L2 signaling, thereby reducing delay, overhead and disruption time.

[0006] In order to reduce mobility delay, the mechanism and process (procedure) of inter-cell mobility based on L1 / L2 includes the following: Configuration and maintenance of multiple candidate cells to allow rapid application of candidate cell configurations (fast application); L1 / L2 signaling-based dynamic switching mechanism between candidate serving cells (including special cells and secondary cells) for applicable scenarios; L1 enhancements to inter-cell beam management, including L1 measurement and reporting and beam direction; Timing advice management; and This is CU-DU (Centralized Unit-Distributed Unit) interface signaling to support L1 / L2 mobility.

[0007] It should be noted that the introduction of the above background art is intended to clearly and completely explain the technical solutions of the present invention and to facilitate understanding by those skilled in the art, and these technical solutions described in the background art of the present invention should not be construed as being known to those skilled in the art. Summary of the Invention [Problem to be solved by the invention]

[0008] The inventors have discovered that for L1 / L2 triggered mobility, trigger information is transmitted in a MAC Control Element (MAC CE), and the MAC CE includes an index of at least one candidate configuration. The candidate configuration may include a candidate special cell configuration and / or a candidate secondary cell configuration to support carrier aggregation. In this case, for L1 / L2 triggered mobility, it is necessary to determine the active / inactive status of the secondary cell. Furthermore, in a dual connectivity (DC) scenario, if applying L1 / L2 triggered mobility to a deactivated SCG is supported, it is also necessary to determine the active / inactive status of the special cell, i.e., the primary secondary cell.

[0009] In view of at least one of the above-mentioned problems or other similar problems, embodiments of the present invention provide a cell activation or deactivation method and apparatus, which can determine the activation / deactivation status of a cell by receiving a cell change command, or receiving an (enhanced) secondary cell activation / deactivation MAC CE, or by activating or deactivating a cell indicated or associated with the cell change command based on the activation or deactivation status of the cell set by RRC signaling, or the activation or deactivation status of a cell group in which the cell is located set by RRC signaling, or the status of a deactivation timer. [Means for solving the problem]

[0010] According to one aspect of an embodiment of the present invention, there is provided a cell activation or deactivation device configured in a terminal device, the device comprising: a receiving unit for receiving a cell change command transmitted by the network device; and A processing unit is included for activating or deactivating a cell indicated or associated with said cell change command based on a condition for cell activation or deactivation.

[0011] According to another aspect of the present invention, there is provided a cell activation or deactivation device configured in a network device, the device comprising: a transmitting unit for transmitting a cell change command to a terminal device; The cell change command is used by the terminal equipment to activate or deactivate the cell indicated or associated with the cell change command based on conditions for cell activation or deactivation. [Effects of the Invention]

[0012] The advantageous effects of the embodiments of the present invention are at least as follows: According to the embodiments of the present invention, when a terminal device receives a cell change command, or an (enhanced) secondary cell activation or deactivation MAC CE, or based on the activation or deactivation state of a cell configured by RRC signaling, or based on the activation or deactivation state of a cell group in which the cell configured by RRC signaling is located, or based on a deactivation timer, the terminal device can determine the activation / deactivation state of a cell indicated in or associated with the cell change command. In this way, the secondary cell can be used for data transmission as quickly as possible after a cell change, thereby ensuring large-scale data communication.

[0013] The following description and reference to the drawings disclose in detail particular embodiments of the present invention, illustrating ways in which the principles of the present invention may be employed, but the scope of the present invention is not limited thereto, and embodiments of the present invention may include various changes, modifications, and alternatives within the scope of the appended claims.

[0014] Additionally, features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, may be combined with features in the other embodiments, or may be substituted for features in the other embodiments.

[0015] It should be noted that terms such as "comprise / have" when used in this specification refer to the presence of a feature, element, step or assembly, but do not exclude the presence or addition of one or more other features, elements, steps or assemblies. [Brief explanation of the drawings]

[0016] Elements and features described in one drawing or one embodiment of the invention may be combined with elements and features shown in one or more other drawings or embodiments, and in the drawings, like reference numerals are used to indicate corresponding parts in several drawings and to indicate corresponding parts used in multiple embodiments. [Figure 1] A diagram showing a one-octet secondary cell activation / deactivation MAC CE. [Figure 2] A diagram showing a 4-octet secondary cell activation / deactivation MAC CE. [Figure 3] FIG. 10 illustrates an enhanced secondary cell activation / deactivation MAC CE with a 1-octet Ci field. [Figure 4] FIG. 10 illustrates an enhanced secondary cell activation / deactivation MAC CE with a 4-octet Ci field. [Figure 5] A diagram showing the procedure for intra-gNB-DU L1 / L2 triggered mobility. [Figure 6] A diagram showing the procedure for gNB-DU L1 / L2 triggered mobility. [Figure 7] FIG. 1 illustrates a scenario according to an embodiment of the present invention. [Figure 8] FIG. 2 illustrates a method for cell activation or deactivation in an embodiment of the first aspect. [Figure 9] FIG. 1 illustrates a MAC CE. [Figure 10] FIG. 10 illustrates a method for cell activation or deactivation in an embodiment of the second aspect. [Figure 11] FIG. 10 shows a cell activation or deactivation device in an embodiment of the third aspect. [Figure 12] FIG. 10 shows another cell activation or deactivation device according to an embodiment of the third aspect. [Figure 13] FIG. 2 is a diagram illustrating a terminal device according to an embodiment of the present invention. [Figure 14]FIG. 1 illustrates a network device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] The foregoing and other features of the present invention will become more apparent from the following detailed description and the accompanying drawings, in which: While the specification and drawings disclose particular embodiments of the present invention, these represent only some of the embodiments which may employ the principles of the present invention, and it is to be understood that the present invention is not limited to the described embodiments, but rather includes all such modifications, variations, and alternatives which fall within the scope of the appended claims.

[0018] In embodiments of the present invention, the term "communication network" or "wireless communication network" may refer to a network conforming to any communication standard, such as LTE (Long Term Evolution), LTE-A (LTE-Advanced), WCDMA (Wideband Code Division Multiple Access), HSPA (High-Speed ​​Packet Access), etc.

[0019] Additionally, communications between devices in a communications system may be performed according to any level of communications protocol, including, but not limited to, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, 5G, New Radio (NR), and / or other conventional or future-developed communications protocols.

[0020] In the embodiments of the present invention, the term "network device" refers to a device that connects a terminal device to a communication network and provides services to the terminal device in a communication system, for example. The network device may include, but is not limited to, a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobile management entity (MME), a network gateway, a server, a radio network controller (RNC), a base station controller (BSC), etc.

[0021] A base station may include, but is not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), a 5G base station (gNB), etc., and may further include a Remote Radio Head (RRH), a Remote Radio Unit (RRU), a relay, a low-power node (e.g., femto, pico, etc.), an IAB node, an IAB-DU, an IAB-donor, etc. The term "base station" may include some or all of the functions thereof, and each base station can provide communication coverage for a specific geographic area. The term "cell" may refer to a base station and / or the area it covers, depending on the context in which the term is used. Unless confusion arises, the terms "cell" and "base station" are interchangeable.

[0022] In embodiments of the present invention, the term "User Equipment" (UE) or "Terminal Equipment" (TE) refers to a device that accesses and receives service from a communication network, for example, via network equipment. User equipment may be fixed or mobile, and may also be referred to as a mobile station (MS), terminal, subscriber station (SS), access terminal (AT), station, etc.

[0023] Terminal devices may include, but are not limited to, cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, mobile devices, machine-type communication devices, laptop computers, cordless phones, smartphones, smart watches, digital cameras, and the like.

[0024] Furthermore, for example, in a scenario such as the Internet of Things (IoT), the user equipment may also be a monitoring or measuring device or apparatus, for example, including but not limited to, a Machine Type Communication (MTC) terminal, an in-vehicle communication terminal, a Device to Device (D2D) terminal, a Machine to Machine (M2M) terminal, etc.

[0025] Furthermore, the term "network side" or "network equipment side" refers to the network side, which may be a base station or may include one or more network equipment as described above. The term "user side" or "terminal side" or "terminal equipment side" refers to the user or terminal side, which may be a UE or may include one or more terminal equipment as described above. Unless otherwise specified, "equipment" herein may refer to network equipment or may also refer to terminal equipment.

[0026] <Secondary Cell Activation or Deactivation MAC CE> The one-octet Secondary Cell Activation / Deactivation MAC CE is identified by a MAC subheader with LCID. As shown in Figure 1, its size is fixed and contains a single octet, which contains seven C fields and one R field.

[0027] The 4-octet secondary cell activation / deactivation MAC CE (SCell Activation / Deactivation MAC CE) is identified by a MAC subheader with LCID. As shown in Figure 2, its size is fixed and includes 4 octets, including 31 C fields and 1 R field. Among them, the MAC entity is C when a secondary cell with SCellIndex i is configured. i The field indicates the active / inactive state of the secondary cell of SCellIndex i configured by the MAC entity, otherwise the MAC entity i Ignore the field. i The field is set to 1 to indicate that the secondary cell with SCellIndex i is activated, and i Setting the field to 0 indicates that the secondary cell with SCellIndex i is deactivated. Also, R is a reserved bit, and its value is 0 by default.

[0028] 1 octet of C i Enhanced SCell Activation / Deactivation MAC CEs with fields are identified by a MAC subheader with eLCID, and as shown in Figure 3, their size is variable and includes seven C fields, one R field, and several TRS ID fields.

[0029] 4 octets of C i Enhanced secondary cell activation / deactivation MAC CEs (Enhanced SCell Activation / Deactivation MAC CEs) with fields are identified by a MAC subheader with eLCID. As shown in Figure 4, its size is variable and includes 31 C fields, 1 R field, and several TRS ID fields. Among them, when a secondary cell with SCellIndex i is configured, the MAC entity i The field indicates the active / inactive state of the secondary cell of SCellIndex i, otherwise the MAC entity i Ignore the field. i If the field is set to 1, the secondary cell with SCellIndex i is activated and one TRS ID of the secondary cell is set. j indicates that the C i If the field is set to 0, the secondary cell with SCellIndex i is deactivated and the TRS ID of the secondary cell is j Indicates that the TRS ID is not included. j follows the ascending order of SCellIndex of SCells. i corresponds to the i-th SCell that should be activated based on i is set to 1. TRS ID j When the TRS setting id in is set to a non-zero value, it indicates that the TRS address corresponding to the scellActivationRS id has been activated. j When the TRS configuration id in is set to a value of zero, it indicates that no TRS is used for the corresponding SCell. Also, R is a reserved bit, and its value is 0 by default.

[0030] The current standard provides the following explanation regarding the setting of the secondary cell sCellState:

[0031] [Table 1] TIFF2025536554000003.tif109162 Regarding sCellState, the current standard provides the following explanation:

[0032] [Table 2] The current standard provides the following explanation regarding the setting of the secondary cell sCellDeactivationTimer timer:

[0033]

number

[0034]

number

[0035] Figure 5 is a diagram showing the procedure (process) of intra-gNB-DU L1 / L2 triggered mobility. As shown in Figure 5, for L1 / L2 triggered mobility (LTM), when a terminal moves within the same gNB-DU, the procedure includes: 501: The UE sends a Measurement Report message including neighboring cell measurements to the gNB-DU, and the gNB-DU sends a UL RRC MESSAGE TRANSFER message carrying the received Measurement Report message to the gNB-CU; 502: The gNB-CU determines to start the configuration of L1 / L2 inter-cell mobility; 503: Hypothesis: The gNB-CU sends a UE CONTEXT MODIFICATION REQUEST message to the gNB-DU, including the target candidate cell; 504: Temporary: If the request to configure L1 / L2 inter-cell mobility is accepted, the gNB-DU responds with a UE CONTEXT MODIFICATION RESPONSE message including the generated and agreed-upon lower layer RRC configuration of the candidate cell; 505: The gNB-CU sends a DL RRC MESSAGE TRANSFER message to the gNB-DU, which includes the generated one RRCReconfiguration message carrying the L1 / L2 inter-cell mobility configuration; 506: The gNB-DU transmits the received RRCReconfiguration message to the UE; 507: The UE responds to the gNB-DU with one RRCReconfigurationComplete message; 508: The gNB-DU sends the RRCReconfigurationComplete message to the gNB-CU via an UL RRC MESSAGE TRANSFER message; 509: The UE sends the L1 measurement result to the gNB-DU, and the gNB-DU decides to perform L1 / L2 inter-cell mobility; 510: The gNB-DU sends an L1 / L2 inter-cell mobility command to the UE; 511: The gNB-DU detects that the UE has accessed the cell; 512: The gNB-DU indicates to the gNB-CU that the UE has successfully accessed the target cell by an Access Success message, including the target cell ID; 513: The gNB-CU sends a UE Context Modification message to the gNB-DU to release the resources of the prepared cell; and 514: The gNB-DU responds with a UE CONTEXT MODIFICATION RESPONSE message.

[0036] Figure 6 is a diagram showing the procedure of inter-gNB-DU L1 / L2 triggered mobility. As shown in Figure 6, in the case of LTM, when a terminal moves between different gNB-DUs, for example, the procedure of LTM from a serving gNB-DU to a candidate gNB-DU includes: 601: A UE sends a MeasurementReport message including neighbor cell measurements to a serving gNB-DU, and the serving gNB-DU sends a UL RRC MESSAGE TRANSFER message carrying the received MeasurementReport message to its gNB-CU; 602: The gNB-CU determines to start the configuration of L1 / L2 inter-cell mobility; 603: The gNB-CU sends one F1 message to the candidate gNB-DU, since the target candidate cell is included; 604: If the request to configure L1 / L2 inter-cell mobility is accepted, the candidate gNB-DU responds with one F1 message, which includes the generated and agreed-upon lower layer RRC configuration of the candidate cell; 605: The gNB-CU sends a DL RRC MESSAGE TRANSFER message to the serving gNB-DU, which includes the generated one RRCReconfiguration message carrying the L1 / L2 inter-cell mobility configuration; 606: The serving gNB-DU transmits the received RRCReconfiguration message to the UE; 607: The UE responds to the serving gNB-DU with one RRCReconfigurationComplete message; 608: The serving gNB-DU sends the RRCReconfigurationComplete message to the gNB-CU via an UL RRC MESSAGE TRANSFER message; 609: The UE sends the L1 measurement result to the serving gNB-DU, and the serving gNB-DU decides to perform L1 / L2 inter-cell mobility; 610: The serving gNB-DU sends an L1 / L2 inter-cell mobility command to the UE.

[0037] The inventors have found that in the case of L1 / L2 triggered mobility, it is necessary to determine the active / inactive state of a cell, and have proposed the present invention based on this.

[0038] In an embodiment of the present invention, scenarios supported by L1 / L2-based inter-cell mobility include Inter-DU scenario, Intra-DU scenario, switching scenario, CA scenario, NR-DC scenario, inter-frequency scenario, etc.

[0039] Among them, switching scenarios refer to the mobility / change of PCell, and include the following scenarios for non-CA (i.e., PCell only) and CA scenarios (i.e., PCell and SCell(s)): the target PCell / target SCell(s) is not the current serving cell (i.e., CA → CA scenario with PCell change), for example, LTM from B to D in the scenario shown in Figure 7; the target PCell is the current SCell, for example, LTM from B to C in the scenario shown in Figure 7; and the target SCell is the current PCell, for example, LTM from A to B in the scenario shown in Figure 7.

[0040] In addition, in the case of a CA scenario, PCell change without SCell change and PCell change with SCell change are supported, in the case of an NR-DC scenario, a scenario in which a PSCell change of the MN is not included (i.e., intra-SN) is supported, and in the case of an inter-frequency scenario, mobility to a cell of a different frequency that is not the current serving cell is included.

[0041] In each of the above scenarios, the source and target cells may be synchronous or asynchronous and may work in FR1 or FR2.

[0042] Hereinafter, embodiments of the present invention will be described in conjunction with the drawings and specific implementation modes.

[0043] In the following description, unless it causes confusion, "if..." may be replaced with "in the case..." or "when...", and "L1 / L2 inter-cell mobility command" may be interchangeable with "LTM (L1 / L2 triggered mobility) command" and "cell change command".

[0044] <Example of the first aspect> In an embodiment of the present invention, a cell activation or deactivation method is provided, which will be explained from the terminal device side.

[0045] 8 is a diagram illustrating a cell activation or deactivation method according to an embodiment of the present invention. As shown in FIG. 8, the method includes the following steps (operations): 801: A terminal device receives a cell change command transmitted by a network device; and 802: The terminal device activates or deactivates a cell indicated or associated with the cell change command based on a condition for cell activation or deactivation.

[0046] Note that, although the above-mentioned FIG. 8 is used to exemplify an embodiment of the present invention, the present invention is not limited thereto. For example, some operations may be added or removed. Those skilled in the art can make appropriate modifications based on the above content without being limited to the description of the above-mentioned FIG. 8.

[0047] According to an embodiment of the present invention, the terminal equipment activates or deactivates the cell indicated or associated with the cell change command based on the conditions for cell activation or deactivation, thereby determining the active / inactive status of the cell.

[0048] In the above embodiment, the cell change command may be a cell switch command, a cell change command, or a cell mobility command. For example, the cell change command may be an L2 command from a network device, such as cell switch MAC CE, carrying an index of a candidate configuration. However, the present invention is not limited thereto, and the cell change command may be something else.

[0049] In some embodiments, the cell change command includes an index of a candidate configuration, and the cell change command indicates an active or inactive state of the cell corresponding to the index of the candidate configuration.

[0050] For example, if the active or inactive state (value indicating the state) of the cell corresponding to the index of the candidate setting is 0, it indicates that the state of the cell corresponding to the index of the candidate setting is active, and if the active or inactive state of the cell corresponding to the index of the candidate setting is 1, it indicates that the state of the cell corresponding to the index of the candidate setting is inactive.

[0051] Also, for example, when the active or inactive state of the cell corresponding to the index of the candidate setting is 0, it indicates that the state of the cell corresponding to the index of the candidate setting is inactive, and when the active or inactive state of the cell corresponding to the index of the candidate setting is 1, it indicates that the state of the cell corresponding to the index of the candidate setting is active.

[0052] In some embodiments, the state of a cell may be determined based on whether the cell change command includes cell information corresponding to the cell.

[0053] For example, when the cell change command includes cell information corresponding to the above-mentioned cell, it indicates that the state of the cell is active, and / or when the cell change command does not include cell information corresponding to the above-mentioned cell, it indicates that the state of the cell is inactive.

[0054] Also, for example, when the cell change command includes cell information corresponding to the above-mentioned cell, it indicates that the state of the cell is in an inactive state, and / or when the cell change command does not include cell information corresponding to the above-mentioned cell, it indicates that the state of the cell is in an active state.

[0055] In some embodiments, the cell indicated by the cell change command may be a cell corresponding to cell information included in the cell change command, which may be a cell ID, e.g., PCI, NCGI, or a cell index, e.g., a cell index or PCI index in a candidate configuration.

[0056] In some embodiments, the cell associated with a cell change command may be the cell associated with the index of the candidate configuration included in the cell change command.

[0057] In an embodiment of the present invention, the network equipment may be a source gNB-DU of the terminal equipment or a serving gNB-DU of the terminal equipment, and the present invention is not limited thereto.

[0058] In some embodiments, the conditions for cell activation or deactivation include receiving a cell change command.

[0059] In the above-described embodiment, when the terminal equipment receives a cell change command to activate a cell, the terminal equipment can activate the cell. For example, if the cell is an inactive cell (e.g., an inactive serving cell) or a candidate target cell (e.g., a cell included in a candidate configuration, i.e., a candidate target cell) before receiving the cell change command, the terminal equipment activates the cell when receiving the cell change command. That is, the cell changes from an inactive state, a candidate state, or a non-serving state to an active state.

[0060] In the above-described embodiment, when the terminal equipment receives a cell change command to deactivate a cell, the terminal equipment can deactivate the cell. For example, if the cell is an active cell (e.g., an active serving cell) or a candidate target cell (e.g., a cell included in a candidate configuration, i.e., a candidate target cell) before receiving the cell change command, the terminal equipment deactivates the cell when receiving the cell change command. That is, the cell changes from an active state, a candidate state, or a non-serving state to an inactive state.

[0061] In some embodiments, the conditions for cell activation or deactivation include receiving a secondary cell activation / deactivation MAC CE or an enhanced secondary cell activation / deactivation MAC CE.

[0062] In the above embodiment, the terminal equipment activates the cell when it receives the secondary cell activation / deactivation MAC CE or the enhanced secondary cell activation / deactivation MAC CE and the MAC CE indicates that the cell should be activated. For example, if the cell is an inactive cell (e.g., an inactive serving cell) or a candidate cell (e.g., a cell included in a candidate configuration, i.e., a candidate target cell) before receiving the cell change command, the terminal equipment activates the cell when it receives the MAC CE indicating that the cell should be activated. That is, the cell changes from an inactive state or a candidate state to an active state.

[0063] In the above embodiment, when the terminal equipment receives the secondary cell activation / deactivation MAC CE or the enhanced secondary cell activation / deactivation MAC CE and the MAC CE indicates that the cell should be deactivated, the terminal equipment deactivates the cell. For example, if the cell is an active cell (e.g., an active serving cell) or a candidate cell (e.g., a cell included in a candidate configuration, i.e., a candidate target cell) before receiving the cell change command, the terminal equipment deactivates the cell when it receives the MAC CE indicating that the cell should be deactivated. That is, the cell changes from an active state or a candidate state to an inactive state.

[0064] An example of the MAC CE is shown in Figure 9. As shown in Figure 9, the MAC CE includes an index of a candidate configuration, cell information (optional), and an active or inactive status (optional).

[0065] In some embodiments, the conditions for cell activation or deactivation include an active or inactive state of the cell set by RRC signaling.

[0066] In some implementations, the terminal device can activate the cell when the state of the cell set by RRC signaling is in an active state. The terminal device can also activate the cell when receiving the cell change command. For example, if the RRC signaling sets the activation of the cell, the terminal device activates the cell when receiving the cell change command.

[0067] In some embodiments, the cell change command includes the cell and / or indicates that the cell is a secondary cell. For example, if the cell change command includes the cell and / or indicates that the cell is a secondary cell, the terminal device activates the cell when RRC signaling configures cell activation or activates the cell upon receiving the cell change command.

[0068] In some embodiments, the cell change command includes an index of a candidate configuration, the candidate configuration includes cell status information, and the value of the cell status information indicates an active or inactive state (hereinafter, the value is referred to as active or inactive). For example, if RRC signaling configures activation of a cell, i.e., if the candidate configuration includes cell status information and its value is active, the terminal device activates the cell or activates the cell when receiving the cell change command.

[0069] In some embodiments, the cell change command includes an index of a candidate configuration, and the candidate configuration includes or does not include cell state information, in which case the terminal device can decide whether to activate the cell based on whether the candidate configuration includes cell state information, or whether to activate the cell upon receiving the cell change command.

[0070] For example, when the candidate configuration includes cell state information, the above-mentioned state set by RRC signaling is an inactive state, and when the candidate configuration does not include cell state information, the above-mentioned state set by RRC signaling is an active state. That is, when RRC signaling sets the activation of a cell, i.e., when the candidate configuration does not include cell state information, the terminal device activates the cell, or activates the cell when receiving a cell change command.

[0071] Also, for example, when the candidate configuration includes cell state information, the above-mentioned state set by RRC signaling is an active state, and when the candidate configuration does not include cell state information, the above-mentioned state set by RRC signaling is an inactive state. That is, when RRC signaling sets the activation of a cell, that is, when the candidate configuration includes cell state information and its value is active, the terminal device activates the cell, or activates the cell when receiving a cell change command.

[0072] In some other implementations, the terminal device can deactivate a cell when the state of the cell set by RRC signaling is in an inactive state. The terminal device can also deactivate the cell when it receives a cell change command. For example, if the RRC signaling sets the deactivation of a cell, the terminal device deactivates the cell when it receives the cell change command.

[0073] In some embodiments, the cell change command includes the cell and / or indicates that the cell is a secondary cell. For example, if the cell change command includes the cell and / or indicates that the cell is a secondary cell, the terminal device deactivates the cell when RRC signaling configures deactivation of the cell or deactivates the cell upon receiving the cell change command.

[0074] In some embodiments, the cell change command includes an index of a candidate configuration, the candidate configuration includes cell status information, and the value of the cell status information is active or inactive. For example, if the RRC signaling configures deactivation of a cell, i.e., the candidate configuration includes cell status information and its value is inactive, the terminal device deactivates the cell, or deactivates the cell when receiving the cell change command.

[0075] In some embodiments, the cell change command includes an index of a candidate configuration, and the candidate configuration includes or does not include cell state information, in which case the terminal device can decide whether to deactivate the cell based on whether the candidate configuration includes cell state information, or whether to deactivate the cell upon receiving the cell change command.

[0076] For example, when the candidate configuration includes the cell state information, the above-mentioned state set by the RRC signaling is an inactive state, and when the candidate configuration does not include the cell state information, the above-mentioned state set by the RRC signaling is an active state. That is, when the RRC signaling sets the deactivation of a cell, i.e., when the candidate configuration includes the cell state information and its value is inactive, the terminal device deactivates the cell, or deactivates the cell when receiving a cell change command.

[0077] Also, for example, when the candidate configuration includes cell state information, the above-mentioned state set by RRC signaling is an active state, and when the candidate configuration does not include cell state information, the above-mentioned state set by RRC signaling is an inactive state. That is, when the RRC signaling sets deactivation of a cell, i.e., when the candidate configuration does not include cell state information, the terminal device deactivates the cell, or deactivates the cell when receiving a cell change command.

[0078] In some embodiments, the conditions for cell activation or deactivation include the active or inactive state of the cell group in which the cell is located, which is set by RRC signaling.

[0079] In some implementations, the terminal device can activate the cell when the state of the above-mentioned cell group set by RRC signaling is in an active state. The terminal device can also activate the cell when receiving the above-mentioned cell change command. For example, if the RRC signaling sets the activation of the cell group in which the cell is located, the terminal device can activate the cell when receiving the cell change command.

[0080] In some embodiments, the cell change command includes the cell group in which the cell is located and / or indicates that the cell group in which the cell is located is a secondary cell group. For example, if the cell change command includes the cell group in which the cell is located and / or indicates that the cell group in which the cell is located is a secondary cell group, the terminal device activates the cell when RRC signaling configures activation of the cell group in which the cell is located or activates the cell upon receiving the cell change command.

[0081] In some embodiments, the cell change command includes an index of a candidate configuration, the candidate configuration includes cell group status information, and the value of the cell group status information is active or inactive. For example, if the RRC signaling configures the activation of a cell group in which a cell is located, i.e., if the candidate configuration includes cell group status information and its value is active, the terminal device activates the cell or activates the cell when receiving the cell change command.

[0082] In some embodiments, the cell change command includes an index of a candidate configuration, and the candidate configuration includes or does not include cell group state information, in which case the terminal device can determine whether to activate the cell based on whether the candidate configuration includes cell group state information, or whether to activate the cell when receiving the cell change command.

[0083] For example, when the candidate configuration includes cell group state information, the above-mentioned state set by RRC signaling is an inactive state, and when the candidate configuration does not include cell group state information, the above-mentioned state set by RRC signaling is an active state. That is, when the RRC signaling sets the activation of the cell group in which the cell is located, i.e., when the candidate configuration does not include cell group state information, the terminal device activates the cell, or activates the cell when receiving a cell change command.

[0084] Also, for example, when the candidate configuration includes cell group state information, the above-mentioned state set by RRC signaling is an active state, and when the candidate configuration does not include cell group state information, the above-mentioned state set by RRC signaling is an inactive state. That is, when the RRC signaling sets the activation of the cell group in which the cell is located, that is, when the candidate configuration includes cell group state information and its value is active, the terminal device activates the cell, or activates the cell when receiving a cell change command.

[0085] In some other implementations, the terminal device deactivates a cell when the state of the cell group set by RRC signaling is in an inactive state. The terminal device can also deactivate the cell when receiving a cell change command. For example, if the RRC signaling sets the deactivation of the cell group in which the cell is located, the terminal device deactivates the cell when receiving the cell change command.

[0086] In some embodiments, the cell change command includes the cell group in which the cell is located and / or indicates that the cell group in which the cell is located is a secondary cell group. For example, if the cell change command includes the cell group in which the cell is located and / or indicates that the cell group in which the cell is located is a secondary cell group, the terminal device deactivates the cell when RRC signaling configures deactivation of the cell group in which the cell is located, or deactivates the cell upon receiving the cell change command.

[0087] In some embodiments, the cell change command includes an index of a candidate configuration, the candidate configuration includes cell group status information, and the value of the cell group status information is active or inactive. For example, if the RRC signaling configures the deactivation of a cell group in which a cell is located, i.e., if the candidate configuration includes cell group status information and its value is inactive, the terminal device deactivates the cell, or deactivates the cell when receiving the cell change command.

[0088] In some embodiments, the cell change command includes an index of a candidate configuration, and the candidate configuration includes or does not include cell group state information, in which case the terminal device determines whether to deactivate the cell based on whether the candidate configuration includes cell group state information, or whether to deactivate the cell when receiving the cell change command.

[0089] For example, when the candidate configuration includes cell group state information, the above-mentioned state set by RRC signaling is an inactive state, and when the candidate configuration does not include cell group state information, the above-mentioned state set by RRC signaling is an active state. That is, when the RRC signaling sets the deactivation of the cell group in which the cell is located, i.e., when the candidate configuration includes cell group state information and its value is inactive, the terminal device deactivates the cell, or deactivates the cell when receiving a cell change command.

[0090] Furthermore, for example, when the candidate configuration includes cell group state information, the above-mentioned state set by RRC signaling is an active state, and when the candidate configuration does not include cell group state information, the above-mentioned state set by RRC signaling is an inactive state. That is, when the RRC signaling sets the deactivation of the cell group in which the cell is located, that is, when the candidate configuration does not include cell group state information, the terminal device deactivates the cell, or deactivates the cell when receiving a cell change command.

[0091] In some embodiments, the conditions for cell activation or deactivation include the state of a secondary cell deactivation timer.

[0092] In the above embodiment, the terminal equipment can activate or deactivate the above cell based on the status of the secondary cell deactivation timer.

[0093] For example, when a secondary cell deactivation timer associated with an active secondary cell expires, the secondary cell is deactivated, i.e., the secondary cell changes from an active state to an inactive state.

[0094] Also, for example, if a secondary cell deactivation timer associated with an active secondary cell is running, the secondary cell is activated, i.e., the secondary cell changes from an active state to an activated state again.

[0095] In an embodiment of the present invention, the terminal equipment activating the above-mentioned cell may include at least one of the following operations: Activate the UL BWP (Uplink Bandwidth Part) and DL BWP (Downlink Bandwidth Part) respectively, which are configured by RRC signaling or indicated by a cell change command; activating SRS transmission on said cell; activating CSI reporting for said cell; Activating PDCCH monitoring for said cell; activating PDCCH monitoring on said cell; activating PUCCH transmission on the cell (if the PUCCH transmission is configured); Starting or restarting a secondary cell deactivation timer associated with said cell; Initializing suspended and configured uplink grants of configured grant Type 1 associated with the cell (if any); Triggering a PHR (Power Headroom Report); Triggering a BSR (Buffer Status Report); and Start RACH.

[0096] It should be noted that the above are merely examples, and the present invention is not limited thereto. The terminal device may also perform normal operations to activate a cell, for which reference can be made to the related art, and detailed description thereof will be omitted here.

[0097] In an embodiment of the present invention, the terminal equipment deactivating the above-mentioned cell may include at least one of the following operations: Do not transmit SRS on the above mentioned cells (unless the conditions are met); not reporting the CSI of the above-mentioned cells (unless the conditions are met); No UL-SCH transmission on the above mentioned cells; Do not transmit RACH on the above mentioned cells (unless the condition is met); Do not monitor the PDCCH on the above cells; Do not monitor the PDCCH of the above-mentioned cells (unless the condition is met); and No PUCCH is transmitted on the above mentioned cells.

[0098] In the above embodiment, the above conditions may include at least one of the following: The aforementioned cell is included in the candidate set carried by the cell change instruction; The network device indicates that it is permitted; and Network equipment is triggering.

[0099] It should be noted that the above are merely examples, and the present invention is not limited thereto. The terminal device may also perform normal operations to deactivate a cell, for which reference can be made to the related art, and detailed description thereof will be omitted here.

[0100] In some embodiments, when the cell is configured as a candidate cell, the terminal equipment may perform at least one of the following operations on the cell: SRS transmission on the cell; CSI report of the cell; PDCCH monitoring of the cell; PUCCH transmission on the cell; and Suspend and initialize configured uplink grants (if any) of configured grant Type 1 associated with the cell.

[0101] In the above-described embodiments, the network device may direct or trigger the above-described actions.

[0102] In some embodiments, the terminal device may activate the cell in the slot in which the activation instruction is received, for example, when the cell changes from an inactive state to an active state.

[0103] In some embodiments, the terminal device may activate the cell at a time T after the slot in which the activation indication was received. For example, when the cell changes from a candidate state to an active state, the terminal device may activate the cell at a time T after the slot in which the activation indication was received.

[0104] In the above embodiment, if the above cell is a secondary cell, the above time T includes at least the application delay of TA (Timing Advance) on the special cells of the cell group where the cell is located.

[0105] In the above embodiment, if the above cell is a primary secondary cell, the above time T includes at least the application delay of the TA on the cell.

[0106] In each of the above embodiments, the time T does not include at least one of the RRC processing delay, the delay in obtaining a valid TA command, and the CSI reporting time.

[0107] In some embodiments, the terminal device may deactivate the cell in the slot in which the deactivation instruction is received, for example, if the cell changes from an active state to an inactive state, or if the cell changes from a candidate state to an inactive state, the terminal device may deactivate the cell in the slot in which the deactivation instruction is received.

[0108] In the above-mentioned embodiment, the activation instruction / deactivation instruction is, for example, information for activating / deactivating cells included in each of the above-mentioned instructions, and detailed description thereof will be omitted here.

[0109] To make the method in the embodiment of the present invention clearer, the method in the embodiment of the present invention will be described below through an example.

[0110] Example 1: The above cell is not the current serving cell.

[0111] In this example, assume that cell 1 is included in the candidate set and is not the current serving cell.

[0112] When cell 1 is one secondary cell in the MCG, according to the method in the embodiment of the present invention, the following cases may exist:

[0113] Case 1: The candidate configuration included in the RRC signaling indicates the active / inactive state of cell 1, and the LTM command includes an index of the candidate configuration, which indicates or is associated with cell 1, and after receiving the LTM command, the terminal device activates / deactivates cell 1 based on the indication of the candidate configuration.

[0114] Case 2: The LTM command includes an index of a candidate configuration indicating or associated with cell 1, and cell 1 information, and after receiving the LTM command, the terminal equipment activates / deactivates cell 1 based on the instruction of the LTM command.

[0115] Case 3: The LTM command includes an index of a candidate configuration indicating or associated with cell 1, and active / inactive status information of cell 1, and after receiving the LTM command, the terminal equipment activates / deactivates cell 1 based on the instruction of the LTM command.

[0116] Also, when cell 1 is one secondary cell in the SCG, according to the method in the embodiment of the present invention, the following cases may exist:

[0117] Case 4: The candidate configuration included in the RRC signaling indicates the active / inactive state of cell 1, and the LTM command includes an index of the candidate configuration that indicates cell 1 or is associated with cell 1, and after receiving the LTM command, the terminal device activates / deactivates cell 1 based on the indication of the candidate configuration.

[0118] Case 5: The candidate configuration included in the RRC signaling indicates the active / inactive state of the cell group in which cell 1 is located, and the LTM command includes an index of the candidate configuration that indicates cell 1 or is associated with cell 1, and after receiving the LTM command, the terminal device activates / deactivates cell 1 based on the indication of the candidate configuration.

[0119] Case 6: The LTM command includes an index of a candidate configuration indicating or associated with cell 1, and cell 1 information, and after receiving the LTM command, the terminal equipment activates / deactivates cell 1 based on the instruction of the LTM command.

[0120] Case 7: The LTM command includes an index of a candidate configuration indicating or associated with cell 1, and active / inactive status information of cell 1, and after receiving the LTM command, the terminal equipment activates / deactivates cell 1 based on the instruction of the LTM command.

[0121] Example 2: The above cell is a current special cell.

[0122] In this example, the special cell is included in the candidate setting as a candidate cell.

[0123] When the special cell is a primary cell, the following cases may exist according to the method in the embodiment of the present invention.

[0124] Case 8: The candidate configuration included in the RRC signaling indicates the active / inactive state of cell 1, and the LTM command includes an index of the candidate configuration that indicates cell 1 or is associated with cell 1, and after receiving the LTM command, the terminal device activates / deactivates cell 1 based on the indication of the candidate configuration.

[0125] Case 9: The LTM command includes an index of a candidate configuration indicating or associated with cell 1, and cell 1 information, and after receiving the LTM command, the terminal equipment activates / deactivates cell 1 based on the instruction of the LTM command.

[0126] Case 10: The LTM command includes an index of a candidate configuration indicating or associated with cell 1, and active / inactive status information of cell 1, and after receiving the LTM command, the terminal equipment activates / deactivates cell 1 based on the instruction of the LTM command.

[0127] In addition, when the special cell is a primary secondary cell and the SCG is inactive, the following cases may exist according to the method in the embodiment of the present invention.

[0128] Case 11: The candidate configuration included in the RRC signaling indicates the active / inactive state of cell 1, and the LTM command includes an index of the candidate configuration that indicates cell 1 or is associated with cell 1, and after receiving the LTM command, the terminal device activates / deactivates cell 1 based on the indication of the candidate configuration.

[0129] Case 12: The LTM command includes an index of a candidate configuration indicating or associated with cell 1, and cell 1 information, and after receiving the LTM command, the terminal equipment activates / deactivates cell 1 based on the instruction of the LTM command.

[0130] Case 13: The LTM command includes an index of a candidate configuration indicating or associated with cell 1, and active / inactive status information of cell 1, and after receiving the LTM command, the terminal equipment activates / deactivates cell 1 based on the instruction of the LTM command.

[0131] Example 3: The above cell is the current active secondary cell.

[0132] In this example, the secondary cell is included in the candidate configuration as a candidate cell.

[0133] When the RRC signaling includes candidate configuration, the following cases may exist according to the method in the embodiment of the present invention.

[0134] Case 14: The candidate configuration included in the RRC signaling indicates the active / inactive state of cell 1, and the LTM command includes an index of the candidate configuration that indicates cell 1 or is associated with cell 1, and after receiving the LTM command, the terminal device activates / deactivates cell 1 based on the indication of the candidate configuration.

[0135] Case 15: The LTM command includes an index of a candidate configuration indicating or associated with cell 1, and cell 1 information, and after receiving the LTM command, the terminal equipment activates / deactivates cell 1 based on the instruction of the LTM command.

[0136] Case 16: The LTM command includes an index of a candidate configuration indicating or associated with cell 1, and active / inactive status information of cell 1, and after receiving the LTM command, the terminal equipment activates / deactivates cell 1 based on the instruction of the LTM command.

[0137] Case 17: The LTM command includes an index of a candidate configuration indicating or associated with cell 1, and after receiving the LTM command, the terminal equipment activates / deactivates cell 1 based on the status of the deactivation timer associated with the cell.

[0138] Example 4: The above cell is a currently inactive secondary cell.

[0139] In this example, the secondary cell is included in the candidate configuration as a candidate cell.

[0140] When the RRC signaling includes candidate configuration, the following cases may exist according to the method in the embodiment of the present invention.

[0141] Case 18: The candidate configuration included in the RRC signaling indicates the active / inactive state of cell 1, and the LTM command includes an index of the candidate configuration that indicates cell 1 or is associated with cell 1, and after receiving the LTM command, the terminal device activates / deactivates cell 1 based on the indication of the candidate configuration.

[0142] Case 19: The LTM command includes an index of a candidate configuration indicating or associated with cell 1, and cell 1 information, and after receiving the LTM command, the terminal equipment activates / deactivates cell 1 based on the instruction of the LTM command.

[0143] Case 20: The LTM command includes an index of a candidate configuration indicating or associated with cell 1, and active / inactive status information of cell 1, and after receiving the LTM command, the terminal equipment activates / deactivates cell 1 based on the instruction of the LTM command.

[0144] Case 21: The LTM command includes an index of a candidate configuration indicating or associated with cell 1, and after receiving the LTM command, the terminal equipment activates / deactivates cell 1 based on the status of the deactivation timer associated with the cell.

[0145] Although the above-described embodiments are provided to exemplify the methods of the present invention, the present invention is not limited to these embodiments, and appropriate modifications can be made based on the above-described embodiments. For example, each of the above-described embodiments may be used alone, or two or more of the above-described embodiments may be used in combination.

[0146] According to the method of the embodiment of the present invention, when the terminal device receives a cell change command, or when it receives an (enhanced) secondary cell activation or deactivation MAC CE, or based on the activation or deactivation state of the cell configured by RRC signaling, or based on the activation or deactivation state of the cell group in which the cell configured by RRC signaling is located, or based on a deactivation timer, the terminal device can determine the activation / deactivation state of the cell indicated in or associated with the cell change command by activating or deactivating the cell. In this way, the secondary cell can be used for data transmission as soon as possible after the cell change, thereby ensuring large-scale data communication.

[0147] <Example of the second aspect> In the embodiment of the present invention, a cell activation or deactivation method is provided, which will be explained from the network side, and the overlapping description of the same content as in the embodiment of the first aspect will be omitted.

[0148] 10 is a diagram illustrating a cell activation or deactivation method according to an embodiment of the present invention. As shown in FIG. 10, the method includes the following steps: 1001: A network device sends a cell change command to a terminal device, and the cell change command is used by the terminal device to activate or deactivate a cell indicated or associated with the cell change command based on conditions related to cell activation or deactivation.

[0149] According to an embodiment of the present invention, a network device transmits a cell change command to a terminal device, causing the terminal device to activate or deactivate a cell indicated or associated with the cell change command based on a condition for cell activation or deactivation. This can help the terminal device determine the activation / deactivation status of a cell. This allows the terminal and the network to use a secondary cell for data transmission as quickly as possible after a cell change, thereby ensuring large-scale data communication.

[0150] In some embodiments, as shown in FIG. 10, the method further comprises the following operations: 1002: The network device activates or deactivates the cell.

[0151] According to an embodiment of the present invention, after transmitting a cell change command, the network equipment activates or deactivates the cell indicated or associated with the cell change command, thereby allowing the secondary cell to be used for data transmission as soon as possible after the cell change, thereby ensuring large-scale data communication.

[0152] Note that, although the above-mentioned FIG. 10 is used to exemplify an embodiment of the present invention, the present invention is not limited thereto. For example, some operations may be added or removed. Those skilled in the art may make appropriate modifications based on the above content without being limited to the description of the above-mentioned FIG. 10.

[0153] In some embodiments, the network device transmits a secondary cell activation / deactivation MAC CE or an enhanced secondary cell activation / deactivation MAC CE to the terminal device, which is used by the terminal device to activate or deactivate a cell indicated in or associated with the cell change command. Note that the operation of the terminal device has already been described in the embodiments of the first aspect, and the contents thereof are incorporated herein, so a detailed description thereof will be omitted here.

[0154] In some embodiments, the network device sends RRC signaling to the terminal device, and the RRC signaling sets the active or inactive status of a cell or the active or inactive status of a cell group in which the cell is located, and the cell status or the cell group status is used by the terminal device to activate or deactivate a cell indicated in or associated with the above-mentioned cell change command. Note that the operation of the terminal device has already been described in the embodiments of the first aspect, and the contents thereof are incorporated herein, so a detailed description thereof will be omitted here.

[0155] In some embodiments, the network device can further set a cell deactivation timer value for the terminal device. The present invention is not limited to a specific setting method, and reference can be made to the related art for this purpose. The state of the cell deactivation timer is used by the terminal device to activate or deactivate the cell indicated in or associated with the above-mentioned cell change command. Note that the operation of the terminal device has already been described in the embodiments of the first aspect, and the contents thereof are incorporated herein, and a detailed description thereof will be omitted here.

[0156] In some embodiments, the network equipment activating the cell includes at least one of the following: receiving an SRS transmission on the cell; receiving a CSI report for the cell; Transmitting a PDCCH on the cell; receiving a PUCCH transmission on the cell; Receive PHR; Receives the BSR; and RACH is received.

[0157] In some embodiments, the network equipment deactivating the cell includes at least one of the following: No SRS received on the cell; No CSI for the cell is received; No UL-SCH received on the cell; No RACH received on the cell; No PDCCH is transmitted on the cell; and No PUCCH is received on that cell.

[0158] It should be noted that the above-mentioned activation and deactivation operations are merely examples, and the present invention is not limited thereto. The network device can also perform other normal cell activation or deactivation operations, for which reference can be made to the related art, and detailed descriptions thereof will be omitted here.

[0159] In some embodiments, the network equipment may further instruct the terminal equipment to deactivate the above-mentioned cell, which may include at least one of the following: transmitting an SRS on the cell; reporting the CSI of the cell; transmitting an UL-SCH on the cell; transmitting a RACH on the cell; monitoring a PDCCH on the cell; monitoring the PDCCH of the cell; and A PUCCH is transmitted on the cell.

[0160] In some embodiments, the network equipment is further capable of triggering the terminal equipment to perform at least one of the following upon said cell deactivation: transmitting an SRS on the cell; reporting the CSI of the cell; transmitting an UL-SCH on the cell; transmitting a RACH on the cell; monitoring a PDCCH on the cell; monitoring the PDCCH of the cell; and A PUCCH is transmitted on the cell.

[0161] In some embodiments, the network equipment activates the cell at a time T after the slot in which it transmits the activation indication.

[0162] If the above-mentioned cell is a secondary cell, the above-mentioned time T includes at least the application delay of the TA on the special cells of the cell group in which the above-mentioned cell is located.

[0163] If the above-mentioned cell is a primary secondary cell, the above-mentioned time T includes at least the application delay of the TA on the cell.

[0164] In some embodiments, the above-mentioned time T does not include at least one of the RRC processing delay, the delay in obtaining a valid TA command, and the CSI reporting time.

[0165] In an embodiment of the present invention, the network equipment is a source gNB-DU or a serving gNB-DU of a terminal equipment, but the present invention is not limited thereto.

[0166] Although the above-described embodiments are provided to exemplify the methods of the present invention, the present invention is not limited to these embodiments, and appropriate modifications can be made based on the above-described embodiments. For example, each of the above-described embodiments may be used alone, or two or more of the above-described embodiments may be used in combination.

[0167] According to a method of an embodiment of the present invention, a network device transmits a cell change command to a terminal device, causing the terminal device to activate or deactivate a cell indicated or associated with the cell change command based on a condition related to cell activation or deactivation. This can help the terminal device determine the activation / deactivation status of a cell. This allows data transmission between the terminal and the network using a secondary cell as quickly as possible after a cell change, thereby ensuring large-scale data communication.

[0168] <Example of the third aspect> An embodiment of the present invention provides a cell activation or deactivation device. The device may be, for example, a terminal device, or one or more components or assemblies provided in the terminal device. The device in the embodiment of the present invention corresponds to the method in the embodiment of the first aspect, and therefore, a duplicate description of the same content as in the embodiment of the first aspect will be omitted here.

[0169] 11 is a diagram illustrating a cell activation or deactivation device according to an embodiment of the present invention. As shown in FIG. 11, the device 1100 includes: A receiving unit 1101: receives a cell change command sent by a network device; and Processing unit 1102: Activates or deactivates a cell indicated or associated with the cell change command according to a condition for cell activation or deactivation.

[0170] In some embodiments, the conditions for cell activation or deactivation include receiving the cell change command.

[0171] In some embodiments, the processing unit 1102 activates the cell when the receiving unit 1101 receives a cell change command to activate the cell.

[0172] In the above embodiment, before the receiving unit 1101 receives the cell change command, the cell is an inactive cell or a candidate cell.

[0173] In some embodiments, the processing unit 1102 deactivates the cell when the receiving unit 1101 receives a cell change command to deactivate the cell.

[0174] In the above embodiment, before the receiving unit 1101 receives the cell change command, the cell is an active cell or a candidate cell.

[0175] In some embodiments, the conditions for cell activation or deactivation include receiving a secondary cell activation / deactivation MAC CE or an enhanced secondary cell activation / deactivation MAC CE.

[0176] In some embodiments, the processing unit 1102 activates the cell when the receiving unit 1101 receives the secondary cell activation / deactivation MAC CE or the enhanced secondary cell activation / deactivation MAC CE and the MAC CE indicates activation of the cell.

[0177] In the above embodiment, before the receiving unit 1101 receives the cell change command, the cell is an inactive cell or a candidate cell.

[0178] In some embodiments, the processing unit 1102 deactivates the cell when the receiving unit 1101 receives the secondary cell activation / deactivation MAC CE or the enhanced secondary cell activation / deactivation MAC CE and the MAC CE indicates deactivation of the cell.

[0179] In the above embodiment, before the receiving unit 1101 receives the cell change command, the cell is an active cell or a candidate cell.

[0180] In some embodiments, the conditions for cell activation or deactivation include an active or inactive state of the cell set by RRC signaling.

[0181] In some embodiments, the processing unit 1102 activates the cell when the state of the cell set by RRC signaling is an active state.

[0182] In the above embodiment, in some implementation manners, the processing unit 1102 activates the cell when the receiving unit 1101 receives the cell change command, that is, if the state of the cell set by RRC signaling is an active state, the processing unit 1102 activates the cell when the receiving unit 1101 receives the cell change command.

[0183] In some embodiments, the processing unit 1102 deactivates the cell when the state of the cell set by RRC signaling is an inactive state.

[0184] In the above embodiment, in some implementation manners, the processing unit 1102 deactivates the cell when the receiving unit 1101 receives the cell change command, that is, if the state of the cell set by RRC signaling is an inactive state, the processing unit 1102 deactivates the cell when the receiving unit 1101 receives the cell change command.

[0185] In some embodiments, the cell change command includes the cell and / or the cell change command indicates that the cell is a secondary cell.

[0186] In some embodiments, the cell change command includes an index of a candidate configuration, the candidate configuration includes cell state information, the value of the cell state information being active or inactive.

[0187] In some embodiments, the cell change command includes an index of a candidate configuration, the candidate configuration including cell state information or not including cell state information.

[0188] In some implementations, when the candidate configuration includes the cell state information, the state set by the RRC signaling is an inactive state, and when the candidate configuration does not include the cell state information, the state set by the RRC signaling is an active state.

[0189] In some other implementation methods, when the candidate configuration includes the cell state information, the state set by the RRC signaling is an active state, and when the candidate configuration does not include the cell state information, the state set by the RRC signaling is an inactive state.

[0190] In some embodiments, the conditions for cell activation or deactivation include the active or inactive state of the cell group in which the cell is located, which is set by RRC signaling.

[0191] In some embodiments, the processing unit 1102 activates the cell when the state of the cell group set by RRC signaling is an active state.

[0192] In the above embodiment, in some implementation manners, the processing unit 1102 activates the cell when the receiving unit 1101 receives the cell change command, that is, if the state of the cell group set by RRC signaling is an active state, the processing unit 1102 activates the cell when the receiving unit 1101 receives the cell change command.

[0193] In some embodiments, the processing unit 1102 deactivates the cell when the state of the cell group set by RRC signaling is in an inactive state.

[0194] In the above embodiment, in some implementation manners, the processing unit 1102 deactivates the cell when the receiving unit 1101 receives the cell change command, that is, if the state of the cell group set by RRC signaling is an inactive state, the processing unit 1102 deactivates the cell when the receiving unit 1101 receives the cell change command.

[0195] In some embodiments, the cell change command includes a cell group in which the cell is located, and / or the cell change command indicates that the cell group in which the cell is located is a secondary cell group.

[0196] In some embodiments, the cell change command includes an index of a candidate configuration, the candidate configuration includes cell group state information, and the value of the cell group state information is active or inactive.

[0197] In some embodiments, the cell change command includes an index of a candidate configuration, the candidate configuration including cell group state information or not including cell group state information.

[0198] In some implementations, when the candidate configuration includes the cell group state information, the state set by the RRC signaling is an inactive state, and when the candidate configuration does not include the cell group state information, the state set by the RRC signaling is an active state.

[0199] In some other implementation methods, when the candidate configuration includes the cell group state information, the state set by the RRC signaling is an active state, and when the candidate configuration does not include the cell group state information, the state set by the RRC signaling is an inactive state.

[0200] In some embodiments, the conditions for cell activation or deactivation include the status of a secondary cell deactivation timer, and the processing unit 1102 activates / deactivates the cell based on the status of the secondary cell deactivation timer.

[0201] For example, when a secondary cell deactivation timer associated with an active secondary cell expires, the processing unit 1102 deactivates the secondary cell.

[0202] Also, for example, if a secondary cell deactivation timer associated with an active secondary cell is running, the processing unit 1102 activates the secondary cell.

[0203] In an embodiment of the present invention, the processing unit 1102 activating the cell includes at least one of the following: activating a UL BWP and a DL BWP configured by RRC signaling or indicated by the cell change command, respectively; activating SRS transmission on the cell; activating CSI reporting for the cell; activating PDCCH monitoring for the cell; activating PDCCH monitoring on the cell; activating PUCCH transmission on said cell (if said PUCCH transmission is configured); starting or restarting a secondary cell deactivation timer associated with the cell; Initializing suspended and configured uplink grants of configured grant Type 1 associated with the cell (if the uplink grant exists); Triggering PHR; Trigger the BSR; and Start RACH.

[0204] In an embodiment of the present invention, the processing unit 1102 deactivating the cell includes at least one of the following: Do not transmit SRS on said cell (unless a condition is met); Do not report the CSI of said cell (unless a condition is met); not transmitting UL-SCH on said cell; Do not transmit RACH on said cell (unless a condition is met); not monitoring a PDCCH on the cell; Do not monitor the PDCCH of the cell (unless a condition is met); and No PUCCH is transmitted on the cell.

[0205] In some embodiments, the conditions include at least one of the following: the cell is included in a candidate set carried by the cell change command; The network device indicates permission; and Network equipment is triggering.

[0206] In some embodiments, the processing unit 1102 activates the cell in the slot in which the activation indication is received.

[0207] In some embodiments, processing unit 1102 activates the cell at a time T after the slot in which the activation indication was received.

[0208] In some implementations, if the cell is a secondary cell, the time T includes at least the application delay of TA on the special cells of the cell group in which the cell is located.

[0209] In some implementations, if the cell is a primary secondary cell, the time T includes at least the application delay of TA on the cell.

[0210] In some embodiments, the time T does not include at least one of an RRC processing delay, a valid TA command acquisition delay, and a CSI reporting time.

[0211] In some embodiments, the processing unit 1102 deactivates the cell in the slot in which the deactivation instruction is received.

[0212] In an embodiment of the present invention, the network device is a source gNB-DU or a serving gNB-DU of the terminal device, but the present invention is not limited thereto.

[0213] In an embodiment of the present invention, the cell change command is a cell switch command, a cell change command, or a cell mobility command, but the present invention is not limited thereto.

[0214] In an embodiment of the present invention, the cell indicated by the cell change command is the cell corresponding to the cell information included in the cell change command.

[0215] In an embodiment of the present invention, the cell associated with the cell change command is a cell associated with an index of a candidate configuration included in the cell change command.

[0216] In some embodiments, the cell change command includes an index of a candidate configuration, and the cell change command indicates an active or inactive state of a cell corresponding to the index of the candidate configuration.

[0217] In some implementations, when the active or inactive state of the cell corresponding to the index of the candidate configuration is 0, it indicates that the state of the cell corresponding to the index of the candidate configuration is active, and when the active or inactive state of the cell corresponding to the index of the candidate configuration is 1, it indicates that the state of the cell corresponding to the index of the candidate configuration is inactive.

[0218] In some other implementation methods, if the active or inactive state of the cell corresponding to the index of the candidate configuration is 0, it indicates that the state of the cell corresponding to the index of the candidate configuration is in an inactive state, and if the active or inactive state of the cell corresponding to the index of the candidate configuration is 1, it indicates that the state of the cell corresponding to the index of the candidate configuration is in an active state.

[0219] In some embodiments, when the cell change command includes cell information corresponding to the cell, it indicates that the state of the cell is active, and when the cell change command does not include cell information corresponding to the cell, it indicates that the state of the cell is inactive.

[0220] In some embodiments, when the cell change command includes cell information corresponding to the cell, it indicates that the state of the cell is in an inactive state, and when the cell change command does not include cell information corresponding to the cell, it indicates that the state of the cell is in an active state.

[0221] In some embodiments, the cell change command further includes cell information corresponding to an index of the candidate configuration.

[0222] Furthermore, an embodiment of the present invention provides a cell activation / deactivation device. The device may be, for example, a network device, or one or more components or assemblies provided in the network device. The device in the embodiment of the present invention corresponds to the method in the embodiment of the second aspect, and therefore, a description of the same content as in the embodiment of the second aspect will be omitted here.

[0223] 12 is a diagram illustrating a cell activation or deactivation device according to an embodiment of the present invention. As shown in FIG. 12, the device 1200 includes: A transmitting unit 1201: transmits a cell change command to a terminal device, and the cell change command is used by the terminal device to activate or deactivate a cell indicated or associated with the cell change command based on conditions for cell activation or deactivation.

[0224] In some embodiments, as shown in FIG. 12, the device 1200 further includes: Processing unit 1202: Activates or deactivates the cell.

[0225] In some embodiments, the transmitting unit 1201 further transmits a secondary cell activation / deactivation MAC CE or an enhanced secondary cell activation / deactivation MAC CE to the terminal equipment, which is used by the terminal equipment to activate or deactivate a cell indicated or associated with the cell change command.

[0226] In some embodiments, the transmitting unit 1201 further transmits RRC signaling to the terminal equipment, the RRC signaling setting an active or inactive state of a cell or an active or inactive state of a cell group, the cell state or cell group state being used by the terminal equipment to activate or deactivate a cell indicated in or associated with the cell change command.

[0227] In some embodiments, the processing unit 1202 activating the cell includes at least one of the following: receiving an SRS transmission on the cell; receiving a CSI report for the cell; Transmitting a PDCCH on the cell; receiving a PUCCH transmission on the cell; Receive PHR; Receives the BSR; and Receive RACH.

[0228] In some embodiments, the processing unit 1202 deactivating the cell includes at least one of the following: No SRS is received on the cell; does not receive CSI for the cell; No UL-SCH is received on the cell; No RACH is received on the cell; not transmitting a PDCCH on the cell; and No PUCCH is received on the cell.

[0229] In some embodiments, the processing unit 1202 may further instruct the terminal device to deactivate the above-mentioned cell, which may include at least one of the following: transmitting an SRS on the cell; reporting the CSI of the cell; transmitting an UL-SCH on the cell; transmitting a RACH on the cell; monitoring a PDCCH on the cell; monitoring the PDCCH of the cell; and A PUCCH is transmitted on the cell.

[0230] In some embodiments, the processing unit 1202 may further trigger the terminal device to perform at least one of the following upon the deactivation of the cell: transmitting an SRS on the cell; reporting the CSI of the cell; transmitting an UL-SCH on the cell; transmitting a RACH on the cell; monitoring a PDCCH on the cell; monitoring the PDCCH of the cell; and A PUCCH is transmitted on the cell.

[0231] In some embodiments, processing unit 1202 activates the cell at a time T after the slot in which it transmits the activation indication.

[0232] In some implementations, if the cell is a secondary cell, the time T includes at least the application delay of the TA on the special cells of the cell group in which the cell is located.

[0233] In some implementations, if the cell is a primary secondary cell, the time T includes at least the application delay of the TA on the cell.

[0234] In some embodiments, the time T does not include at least one of an RRC processing delay, a valid TA command acquisition delay, and a CSI reporting time.

[0235] In an embodiment of the present invention, the network device is a source gNB-DU or a serving gNB-DU of the terminal device, but the present invention is not limited thereto.

[0236] Although the embodiments of the present invention have been described above as examples, the present invention is not limited to these, and appropriate modifications can be made based on the above-described embodiments. For example, each of the above-described embodiments can be used alone, or two or more of the above-described embodiments can be used in combination.

[0237] Although the above describes each component or module related to the present invention, the present invention is not limited thereto. The cell activation or deactivation device in the embodiment of the present invention may further include other components or modules, and the specific content of these components or modules can be found in the related art. Furthermore, each of the above-described components or modules may be realized by hardware such as a processor, memory, transmitter, or receiver, but the implementation of the present invention is not limited thereto.

[0238] According to an apparatus in an embodiment of the present invention, when a terminal device receives a cell change command, or an (enhanced) secondary cell activation or deactivation MAC CE, or based on the activation or deactivation state of a cell configured by RRC signaling, or based on the activation or deactivation state of a cell group in which the cell configured by RRC signaling is located, or based on a deactivation timer, the activation / deactivation state of the cell can be determined by activating or deactivating the cell indicated in or associated with the cell change command. In this way, the secondary cell can be used for data transmission as soon as possible after the cell change, thereby ensuring large-scale data communication.

[0239] <Example of the fourth aspect> An embodiment of the present invention further provides a communication system, which includes a network device and a terminal device.

[0240] In some embodiments, the terminal device includes the device shown in Figure 11 in an embodiment of the third aspect and is configured to execute the method in the embodiment of the first aspect, which has already been described in detail in the embodiment of the first aspect, and the content thereof is incorporated herein, and a detailed description thereof will be omitted here.

[0241] In an embodiment of the present invention, the network device includes the device shown in Figure 12 in an embodiment of the third aspect, and is configured to perform the method in the embodiment of the second aspect. Since the method has already been described in detail in the embodiment of the second aspect, the content thereof is incorporated herein and a detailed description thereof will be omitted. In addition, the network device performs normal network device operations, and the network device further performs operations corresponding to the operations of terminal devices, for example, the network device can receive information / signals from terminal devices and / or send information / signals to terminal devices, a detailed description thereof will be omitted.

[0242] In the embodiment of the present invention, a terminal device is further provided, and the terminal device is, for example, a UE, but the present invention is not limited thereto and may also be other terminal devices.

[0243] 13 is a diagram illustrating a terminal device according to an embodiment of the present invention. As shown in FIG. 13, the terminal device 1300 may include a processor 1301 and a memory 1302, where the memory 1302 stores data and programs and is connected to the processor 1301. Note that this diagram is merely an example, and other types of components may be used to supplement or replace the components to achieve telecommunication or other functions.

[0244] In some embodiments, the functionality of the device 1100 in the embodiments of the third aspect may be integrated into a processor 1301, in which the processor 1201 may be configured to execute a program to implement the method described in the embodiments of the first aspect, the contents of which are incorporated herein and will not be described in detail herein.

[0245] In some other embodiments, the device 1100 in the embodiment of the third aspect may be located separately from the processor 1301, for example, the device 1100 in the embodiment of the third aspect may be configured as a chip connected to the processor 1301, and the functions of the device 1100 in the embodiment of the third aspect may be realized by control of the processor 1301.

[0246] As shown in Fig. 13, the terminal device 1300 may further include a communication module 1303, an input unit 1304, a display 1305, a power supply 1306, etc. The functions of the above-mentioned components are the same as those of the prior art, and detailed descriptions thereof will be omitted here. Note that the terminal device 1300 does not need to include all the components shown in Fig. 13, and the above-mentioned components are not essential. Furthermore, the terminal device 1300 may further include components not shown in Fig. 13, and reference can be made to related art for details.

[0247] Furthermore, in the embodiment of the present invention, a network device is further provided, and the network device may be, for example, a base station, but the present invention is not limited thereto and may also be other network devices.

[0248] 14 is a block diagram of a network device according to an embodiment of the present invention. As shown in FIG. 14, a network device 1400 includes a processor 1401 and a memory 1402, and the memory 1402 is connected to the processor 1401. The memory 1402 can store various data and can also store programs for information processing, and can execute the programs under the control of the processor 1401.

[0249] In some embodiments, the functionality of the device 1200 in the embodiments of the third aspect may be integrated into a processor 1401, in which the processor 1401 may be configured to execute a program to implement the method described in the embodiments of the second aspect, the contents of which are incorporated herein and will not be described in detail herein.

[0250] In some other embodiments, the device 1200 in the embodiment of the third aspect may be arranged independently of the processor 1401, for example, the device 1200 in the embodiment of the third aspect may be configured as a chip connected to the processor 1401, and the functions of the device 1200 in the embodiment of the third aspect may be realized under the control of the processor 1401.

[0251] 14, the network device 1400 may further include a transceiver 1403, an antenna 1404, etc. The functions of the above-mentioned components are the same as those of the prior art, and detailed description thereof will be omitted here. Note that the network device 1400 does not need to include all of the components shown in FIG. 14. The network device 1400 may further include components not shown in FIG. 14, but reference can be made to the prior art for this information.

[0252] An embodiment of the present invention further provides a computer program, which, when executed by a terminal device, causes the terminal device to perform the method described in the embodiment of the first aspect.

[0253] An embodiment of the present invention further provides a storage medium storing a computer program, wherein the computer program causes a terminal device to perform the method described in the embodiment of the first aspect.

[0254] An embodiment of the present invention further provides a computer program, which, when executed by a network device, causes the network device to perform the method described in the embodiment of the second aspect.

[0255] An embodiment of the present invention further provides a storage medium storing a computer program, wherein the computer program causes a network device to perform the method described in the embodiment of the second aspect.

[0256] The above-described devices and methods may be realized by software or hardware, or by a combination of hardware and software. The present invention further relates to a computer-readable program as described below, which, when executed by a logic component, causes the logic component to realize the above-described devices or components, or to perform each of the above-described methods or steps. The logic component may be, for example, an FPGA (Field Programmable Gate Array), a microprocessor, or a processing unit used in a computer. The present invention also relates to a storage medium, such as a hard disk, magnetic disk, optical hard disk, DVD, or flash memory, that stores the above-described program.

[0257] Furthermore, one or more combinations of the functional blocks illustrated in the figures and / or one or more combinations of the functional blocks may be implemented as a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic component, a discrete gate or transistor logic component, a discrete hardware assembly, or any other suitable combination for performing the functions described herein. Also, one or more combinations of the functional blocks illustrated in the figures and / or one or more combinations of the functional blocks may be further implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors communicatively coupled with a DSP, or any other configuration.

[0258] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and any modifications to the present invention that do not depart from the spirit of the present invention fall within the technical scope of the present invention.

[0259] Furthermore, with respect to the above-mentioned embodiments, the following supplementary notes are further disclosed.

[0260] (Appendix 1) 1. A method for cell activation or deactivation, the method comprising: The terminal equipment receives a cell change command transmitted by the network equipment; and The terminal device activates or deactivates a cell indicated or associated with the cell change command based on a condition regarding cell activation or deactivation.

[0261] (Appendix 2) 2. The method of claim 1, comprising: The conditions for cell activation or deactivation include receiving the cell change command.

[0262] (Appendix 3) 10. The method according to claim 1 or 2, The terminal equipment activates the cell when it receives a cell change command to activate the cell.

[0263] (Appendix 4) 10. The method according to claim 1 or 2, The terminal device deactivates the cell when it receives a cell change command to deactivate the cell.

[0264] (Appendix 5) 2. The method of claim 1, comprising: The conditions for cell activation or deactivation include receiving a secondary cell activation / deactivation MAC CE or an enhanced secondary cell activation / deactivation MAC CE.

[0265] (Appendix 6) 6. The method according to claim 1 or 5, The terminal device receives the secondary cell activation / deactivation MAC CE or the enhanced secondary cell activation / deactivation MAC CE, and activates the cell when the MAC CE indicates cell activation.

[0266] (Appendix 7) 6. The method according to claim 1 or 5, The terminal device deactivates the cell when it receives the secondary cell activation / deactivation MAC CE or the enhanced secondary cell activation / deactivation MAC CE and the MAC CE indicates cell deactivation.

[0267] (Appendix 8) 10. The method according to claim 3 or 6, Prior to receiving the cell change command, the cell is an inactive cell or a candidate cell.

[0268] (Appendix 9) 8. The method according to claim 4 or 7, Prior to receiving the cell change command, the cell is an active cell or a candidate cell.

[0269] (Appendix 10) 2. The method of claim 1, comprising: The conditions for cell activation or deactivation include the active or inactive state of the cell set by RRC signaling.

[0270] (Appendix 11) 11. The method of claim 1 or 10, The terminal device activates the cell when the state of the cell set by RRC signaling is in an active state.

[0271] (Appendix 12) 12. The method of claim 11, The terminal equipment activates the cell upon receiving the cell change command.

[0272] (Appendix 13) 11. The method of claim 1 or 10, The terminal device deactivates the cell when the state of the cell set by RRC signaling is an inactive state.

[0273] (Appendix 14) 14. The method of claim 13, The terminal device deactivates the cell upon receiving the cell change command.

[0274] (Appendix 15) The method according to any one of appendices 10 to 14, the cell change command includes the cell; and / or The cell change command indicates that the cell is a secondary cell.

[0275] (Appendix 16) The method according to any one of appendices 10 to 14, the cell change command includes an index of a candidate configuration; The candidate configuration includes cell state information, and the value of the cell state information is active or inactive.

[0276] (Appendix 17) The method according to any one of appendices 10 to 14, the cell change command includes an index of a candidate configuration; The candidate configuration may or may not include cell state information.

[0277] (Appendix 18) 18. The method of claim 17, When the candidate configuration includes the cell state information, the state configured by the RRC signaling is an inactive state; When the candidate configuration does not include the cell state information, the state configured by the RRC signaling is an active state.

[0278] (Appendix 19) 18. The method of claim 17, When the candidate configuration includes the cell state information, the state configured by the RRC signaling is an active state; When the candidate configuration does not include the cell state information, the state configured by the RRC signaling is an inactive state.

[0279] (Appendix 20) 2. The method of claim 1, comprising: The conditions for cell activation or deactivation include the active or inactive state of the cell group in which the cell is located, which is set by RRC signaling.

[0280] (Appendix 21) 21. The method of claim 1 or 20, The terminal device activates the cell when the state of the cell group set by RRC signaling is in an active state.

[0281] (Appendix 22) 22. The method of claim 21, The terminal equipment activates the cell upon receiving the cell change command.

[0282] (Appendix 23) 21. The method of claim 1 or 20, The terminal device deactivates the cell when the state of the cell group set by RRC signaling is in an inactive state.

[0283] (Appendix 24) 24. The method of claim 23, The terminal device deactivates the cell upon receiving the cell change command.

[0284] (Appendix 25) The method according to any one of appendices 20 to 24, the cell change command includes the cell group in which the cell is located; and / or The cell change command indicates that the cell group in which the cell is located is a secondary cell group.

[0285] (Appendix 26) The method according to any one of appendices 20 to 24, the cell change command includes an index of a candidate configuration; The candidate configuration includes cell group status information, and the value of the cell group status information is active or inactive.

[0286] (Appendix 27) The method according to any one of appendices 20 to 24, the cell change command includes an index of a candidate configuration; The candidate configuration may include cell group status information or may not include cell group status information.

[0287] (Appendix 28) 28. The method of claim 27, When the candidate configuration includes the cell group state information, the state configured by the RRC signaling is an inactive state; When the candidate configuration does not include the cell group state information, the state configured by the RRC signaling is an active state.

[0288] (Appendix 29) 28. The method of claim 27, When the candidate configuration includes the cell group state information, the state configured by the RRC signaling is an active state; When the candidate configuration does not include the cell group state information, the state configured by the RRC signaling is an inactive state.

[0289] (Appendix 30) 2. The method of claim 1, comprising: The conditions for cell activation or deactivation include the state of a secondary cell deactivation timer; The terminal device activates or deactivates the cell based on the state of the secondary cell deactivation timer.

[0290] (Appendix 31) 31. The method of claim 30, deactivating an active secondary cell when a secondary cell deactivation timer associated with the active secondary cell expires.

[0291] (Appendix 32) 32. The method of claim 31, activating an active secondary cell if a secondary cell deactivation timer associated with the active secondary cell is running.

[0292] (Appendix 33) 12. The method of any one of claims 1-32, comprising: The terminal equipment activating the cell includes at least one of the following: activating a UL BWP and a DL BWP configured by RRC signaling or indicated by the cell change command, respectively; activating SRS transmission on the cell; activating CSI reporting for the cell; activating PDCCH monitoring for the cell; activating PDCCH monitoring on the cell; activating PUCCH transmission on said cell (if said PUCCH transmission is configured); starting or restarting a secondary cell deactivation timer associated with the cell; Initializing suspended and configured uplink grants of configured grant Type 1 associated with the cell (if the uplink grant exists); Triggering PHR; Trigger the BSR; and The one that initiates the RACH.

[0293] (Appendix 34) 12. The method of any one of claims 1-32, comprising: The terminal equipment deactivating the cell includes at least one of the following: Do not transmit SRS on said cell (unless a condition is met); Do not report the CSI of said cell (unless a condition is met); not transmitting UL-SCH on said cell; Do not transmit RACH on said cell (unless a condition is met); not monitoring a PDCCH on the cell; Do not monitor the PDCCH of the cell (unless a condition is met); and Not transmitting a PUCCH on the cell.

[0294] (Appendix 35) 35. The method of claim 34, The conditions include at least one of the following: the cell is included in a candidate set carried by the cell change command; The network device indicates permission; and Including network equipment triggering.

[0295] (Appendix 36) The method according to any one of appendices 1 to 32, The terminal device activating the cell includes: activating the cell in the slot in which the terminal equipment received an activation indication; or activating the cell at a time T after the slot in which the terminal equipment received the activation indication.

[0296] (Appendix 37) 37. The method of claim 36, If the cell is a secondary cell, the time T includes at least the application delay of the TA on the special cell of the cell group in which the cell is located.

[0297] (Appendix 38) 37. The method of claim 36, If the cell is a primary secondary cell, the time T includes at least the application delay of the TA on the cell.

[0298] (Appendix 39) The method according to any one of appendices 36 to 38, The time T does not include at least one of an RRC processing delay, a valid TA command acquisition delay, and a CSI reporting time.

[0299] (Appendix 40) The method according to any one of appendices 1 to 32, The terminal device deactivating the cell comprises: deactivating the cell in the slot in which the terminal device received the deactivation instruction.

[0300] (Appendix 41) The method according to any one of appendices 1 to 40, The network equipment is a source gNB-DU or serving gNB-DU of the terminal equipment.

[0301] (Appendix 42) The method according to any one of appendices 1 to 40, The cell change command is a cell switch command, a cell change command, or a cell mobility command.

[0302] (Appendix 43) The method according to any one of appendices 1 to 40, The cell indicated by the cell change command is the cell corresponding to the cell information included in the cell change command.

[0303] (Appendix 44) The method according to any one of appendices 1 to 40, The cell associated with the cell change command is a cell associated with an index of a candidate configuration included in the cell change command.

[0304] (Appendix 45) The method according to any one of appendices 1 to 40, the cell change command includes an index of a candidate configuration; The cell change command indicates an active or inactive state of a cell corresponding to the index of the candidate configuration.

[0305] (Appendix 46) 46. ​​The method of claim 45, When the active or inactive state of the cell corresponding to the index of the candidate setting is 0, the state of the cell corresponding to the index of the candidate setting is indicated to be an active state, and when the active or inactive state of the cell corresponding to the index of the candidate setting is 1, the state of the cell corresponding to the index of the candidate setting is indicated to be an inactive state.

[0306] (Appendix 47) 46. ​​The method of claim 45, When the active or inactive state of the cell corresponding to the index of the candidate setting is 0, the state of the cell corresponding to the index of the candidate setting is indicated to be inactive, and when the active or inactive state of the cell corresponding to the index of the candidate setting is 1, the state of the cell corresponding to the index of the candidate setting is indicated to be active.

[0307] (Appendix 48) 46. ​​The method of claim 45, When the cell change command includes cell information corresponding to the cell, the state of the cell is indicated to be an active state, and when the cell change command does not include cell information corresponding to the cell, the state of the cell is indicated to be an inactive state.

[0308] (Appendix 49) 46. ​​The method of claim 45, When the cell change command includes cell information corresponding to the cell, the command indicates that the state of the cell is inactive, and when the cell change command does not include cell information corresponding to the cell, the command indicates that the state of the cell is active.

[0309] (Appendix 50) 46. ​​The method of claim 45, The cell change instruction further includes cell information corresponding to an index of the candidate configuration.

[0310] (Appendix 51) 1. A method for cell activation or deactivation, the method comprising: The network equipment transmits a cell change command to the terminal equipment; The cell change command is used by the terminal device to activate or deactivate a cell indicated or associated with the cell change command based on conditions related to cell activation or deactivation.

[0311] (Appendix 51a) 52. The method of claim 51, further comprising: The network equipment activating or deactivating the cell.

[0312] (Appendix 52) 52. The method of claim 51, further comprising: The network device transmits a secondary cell activation / deactivation MAC CE or an enhanced secondary cell activation / deactivation MAC CE to the terminal device; The MAC CE is used by the terminal equipment to activate or deactivate the cell indicated in or associated with the cell change command.

[0313] (Appendix 53) 52. The method of claim 51, further comprising: The network device transmits RRC signaling to the terminal device; The RRC signaling sets the active or inactive state of a cell or the active or inactive state of a cell group in which the cell is located, and the state of the cell or the state of the cell group is used by the terminal device to activate or deactivate the cell indicated in or associated with the cell change command.

[0314] (Appendix 54) 51a, comprising: The network equipment activating the cell includes at least one of the following: receiving an SRS transmission on the cell; receiving a CSI report for the cell; Transmitting a PDCCH on the cell; receiving a PUCCH transmission on the cell; Receive PHR; Receives the BSR; and The RACH is received by the

[0315] (Appendix 55) 51a, comprising: The network equipment deactivating the cell includes at least one of the following: No SRS is received on the cell; does not receive CSI for the cell; No UL-SCH is received on the cell; No RACH is received on the cell; not transmitting a PDCCH on the cell; and Not receiving a PUCCH on the cell.

[0316] (Appendix 55a) The method according to any one of appendices 51 to 55, further comprising: The network equipment instructs the terminal equipment to deactivate the cell, which includes at least one of the following: transmitting an SRS on the cell; reporting the CSI of the cell; transmitting an UL-SCH on the cell; transmitting a RACH on the cell; monitoring a PDCCH on the cell; monitoring the PDCCH of the cell; and Transmitting a PUCCH on the cell.

[0317] (Appendix 55b) The method according to any one of Supplementary Notes 51 to 55a, further comprising: The network equipment includes triggering the terminal equipment to perform at least one of the following when deactivating the cell: transmitting an SRS on the cell; reporting the CSI of the cell; transmitting an UL-SCH on the cell; transmitting a RACH on the cell; monitoring a PDCCH on the cell; monitoring the PDCCH of the cell; and Transmitting a PUCCH on the cell.

[0318] (Appendix 56) 54. The method according to any one of appendices 51a to 54, The network equipment activating the cell comprises: activating the cell at a time T after the slot transmitting the activation indication.

[0319] (Appendix 57) 57. The method of claim 56, If the cell is a secondary cell, the time T includes at least the application delay of the TA on the special cell of the cell group in which the cell is located.

[0320] (Appendix 58) 57. The method of claim 56, If the cell is a primary secondary cell, the time T includes at least the application delay of the TA on the cell.

[0321] (Appendix 59) 59. The method of claim 56, 57, or 58, The time T does not include at least one of an RRC processing delay, a valid TA command acquisition delay, and a CSI reporting time.

[0322] (Appendix 60) 59. The method of any one of claims 51-59, comprising: The network equipment is a source gNB-DU or serving gNB-DU of the terminal equipment.

[0323] (Appendix 61) A terminal device including a storage device and a processor, The storage device stores a computer program, The processor is configured to execute the computer program to implement the method according to any one of appendices 1 to 50.

[0324] (Appendix 62) A network device including a storage device and a processor, The storage device stores a computer program, The processor is configured to execute the computer program to implement the method according to any one of appendices 51 to 60.

[0325] (Appendix 63) 63. A communication system comprising the network device according to claim 62 and the terminal device according to claim 61.

Claims

1. A cell activation or deactivation device configured in a terminal device, said device comprising: a receiving unit for receiving a cell change command transmitted by the network equipment; and An apparatus comprising: a processing unit that activates or deactivates a cell indicated or associated with the cell change command based on a condition for cell activation or deactivation.

2. 10. The apparatus of claim 1, The conditions for cell activation or deactivation include receiving the cell change command.

3. 10. The apparatus of claim 1, The apparatus, wherein the conditions for cell activation or deactivation include receiving a secondary cell activation / deactivation medium access control control element or an enhanced secondary cell activation / deactivation medium access control control element.

4. 10. The apparatus of claim 1, The conditions for cell activation or deactivation include the active or inactive state of the cell set by radio resource control signaling.

5. 10. The apparatus of claim 1, The device, wherein the conditions for cell activation or deactivation include an active or inactive state of a cell group in which the cell is located, which is set by radio resource control signaling.

6. 10. The apparatus of claim 1, The conditions for cell activation or deactivation include the state of a secondary cell deactivation timer; The terminal equipment activates or deactivates the cell based on the state of the secondary cell deactivation timer.

7. 10. The apparatus of claim 1, The processing unit activating the cell includes at least one of the following: activating uplink and downlink partial bandwidths configured by radio resource control signaling or indicated by the cell change command, respectively; activating a sounding reference signal transmission on the cell; activating channel state information reporting for the cell; activating physical downlink control channel monitoring for the cell; activating physical downlink control channel monitoring on the cell; activating physical uplink control channel transmission on the cell (if the physical uplink control channel transmission is configured); starting or restarting a secondary cell deactivation timer associated with the cell; Initializing suspended and configured uplink grants of configured grant Type 1 associated with the cell (if the uplink grant exists); Triggers power headroom reporting; Triggering buffer status reporting; and The device is configured to initiate a random access channel.

8. 10. The apparatus of claim 1, The processing unit deactivating the cell includes at least one of the following: Do not transmit a sounding reference signal on the cell (unless a condition is met); not reporting channel state information for the cell (unless a condition is met); not transmitting an uplink shared channel on the cell; not transmitting a random access channel on said cell (unless a condition is met); not monitoring a physical downlink control channel on the cell; not monitoring the physical downlink control channel of the cell (unless a condition is met); and The apparatus is configured to not transmit a physical uplink control channel on the cell.

9. 9. The apparatus of claim 8, The conditions include at least one of the following: the cell is included in a candidate set carried by the cell change command; The network device indicates permission; and The network device is triggering the device.

10. 10. The apparatus of claim 1, the processing unit activates the cell in the slot in which it receives the activation instruction; or The processing unit activates the cell at a time T after the slot in which the activation instruction was received.

11. 11. The apparatus of claim 10, An apparatus, wherein, when the cell is a secondary cell, the time T includes at least the application delay of timing advice on a special cell of a cell group in which the cell is located.

12. 11. The apparatus of claim 10, The apparatus, wherein, if the cell is a primary secondary cell, the time T includes at least an application delay of timing advice on the cell.

13. 11. The apparatus of claim 10, The apparatus, wherein the time T does not include at least one of a radio resource control processing delay, a delay in obtaining a valid timing advice command, and a time for reporting channel state information.

14. 10. The apparatus of claim 1, The processing unit deactivates the cell in a slot in which it receives a deactivation instruction.

15. 10. The apparatus of claim 1, The device, wherein the cell indicated by the cell change command is a cell corresponding to cell information included in the cell change command.

16. 10. The apparatus of claim 1, The apparatus, wherein the cell associated with the cell change command is a cell associated with an index of a candidate configuration included in the cell change command.

17. A cell activation or deactivation device configured in a network device, the device comprising: a transmitting unit for transmitting a cell change command to a terminal device; The cell change command is used by the terminal device to activate or deactivate a cell indicated or associated with the cell change command based on conditions related to cell activation or deactivation.

18. 18. The apparatus of claim 17, further comprising: Further comprising a processing unit, which instructs the terminal equipment to deactivate the cell, which includes at least one of: transmitting a sounding reference signal on the cell; reporting channel state information of the cell; Transmitting an uplink shared channel on the cell; transmitting a random access channel on the cell; monitoring a physical downlink control channel on the cell; monitoring a physical downlink control channel of the cell; and transmitting a physical uplink control channel on the cell.

19. 18. The apparatus of claim 17, further comprising: It further includes a processing unit, which triggers the terminal equipment to perform at least one of the following when deactivating the cell: transmitting a sounding reference signal on the cell; reporting channel state information of the cell; Transmitting an uplink shared channel on the cell; transmitting a random access channel on the cell; monitoring a physical downlink control channel on the cell; monitoring a physical downlink control channel of the cell; and transmitting a physical uplink control channel on the cell.

20. A communication system including a network device and a terminal device, the terminal device is configured to receive a cell change command transmitted by the network device; and to activate or deactivate a cell indicated in or associated with the cell change command based on a condition for cell activation or deactivation; and / or The network equipment is configured to send a cell change command to the terminal equipment, and the cell change command is used by the terminal equipment to activate or deactivate a cell indicated or associated with the cell change command based on conditions related to cell activation or deactivation.

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