Operation execution method and device, equipment and storage medium

Abstract

The invention discloses an operation execution method and device, equipment and a storage medium, and relates to the field of communication. The method comprises the following steps: receiving LTM candidate cell configuration, wherein the LTM candidate cell configuration is used for configuring an LTM candidate cell for the terminal equipment; and executing a first operation based on the LTM candidate cell configuration and / or the state of the serving cell of the terminal device. Therefore, the terminal equipment can work more reasonably and efficiently in a communication system in consideration of the LTM candidate cell configuration and the cell state when executing the operation related to the serving cell.

Description

Operation execution method, device, equipment and storage medium Technical Field

[0001] The present application relates to the field of communications, and in particular to an operation execution method, apparatus, device, and storage medium. Background Art

[0002] Related technologies propose a cell switching process triggered by layer 1 / layer 2 measurements or signaling, where the network device sends the candidate cell configuration to the terminal device, the terminal device feeds back the measurement results of the candidate cell, and the network device then issues the cell switching decision to achieve this.

[0003] The candidate cell configuration may include a configuration for a serving cell for a terminal device to perform cell switching. However, there is currently no solution to ensure that the terminal device can still smoothly perform related operations of cell switching when the serving cell is in a dormant or activated state.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide an operation execution method, apparatus, device, and storage medium, and the technical solutions are as follows:

[0006] According to one aspect of the present application, an operation execution method is provided, the method being used in a carrier aggregation scenario and / or a dual connectivity scenario, the method being executed by a terminal device, the method comprising:

[0007] receiving a layer 1 / layer 2 triggered mobility management (L1 / L2 Triggered Mobility, LTM) candidate cell configuration, wherein the LTM candidate cell configuration is used to configure the LTM candidate cell for the terminal device;

[0008] A first operation is performed based on the LTM candidate cell configuration and / or the status of the serving cell of the terminal device.

[0009] According to one aspect of the present application, an operation execution method is provided, the method being used in a carrier aggregation scenario and / or a dual connectivity scenario, the method being executed by a master node (MN), the method comprising:

[0010] Sending an LTM candidate cell configuration, where the LTM candidate cell configuration is used to configure an LTM candidate cell to a terminal device;

[0011] A third operation related to the terminal device is performed.

[0012] According to one aspect of the present application, an operation execution method is provided, the method being used in a carrier aggregation scenario and / or a dual connectivity scenario, the method being performed by a secondary node (SN), the method comprising:

[0013] Sending an LTM candidate cell configuration, where the LTM candidate cell configuration is used to configure an LTM candidate cell to a terminal device;

[0014] A fifth operation related to the terminal device is performed.

[0015] According to one aspect of the present application, an operation execution device is provided, the device being used in a carrier aggregation scenario and / or a dual connectivity scenario, the device including:

[0016] a first receiving module, configured to receive an LTM candidate cell configuration, wherein the LTM candidate cell configuration is used to configure an LTM candidate cell for the apparatus;

[0017] The first processing module is configured to perform a first operation based on the LTM candidate cell configuration and / or the status of a serving cell of the device.

[0018] According to one aspect of the present application, an operation execution device is provided, the device being used in a carrier aggregation scenario and / or a dual connectivity scenario, the device including:

[0019] A second sending module is used to send an LTM candidate cell configuration, where the LTM candidate cell configuration is used to configure the LTM candidate cell to the terminal device;

[0020] The second processing module is used to execute a third operation related to the terminal device.

[0021] According to one aspect of the present application, an operation execution device is provided, the device being used in a carrier aggregation scenario and / or a dual connectivity scenario, the device including:

[0022] A third sending module is used to send an LTM candidate cell configuration, where the LTM candidate cell configuration is used to configure the LTM candidate cell to the terminal device;

[0023] The third processing module is used to perform a fifth operation related to the terminal device.

[0024] According to one aspect of the present application, a communication device is provided, which terminal includes: a processor; a transceiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions, and the communication device implements the operation execution method described in the above aspect.

[0025] According to one aspect of the present application, a computer-readable storage medium is provided, in which executable instructions are stored. The executable instructions are loaded and executed by a processor, and the computer-readable storage medium is used to implement the operation execution method described in the above aspect.

[0026] According to one aspect of the present application, a computer program product is provided, which includes computer instructions, wherein the computer instructions are stored in a computer-readable storage medium, and a processor of a communication device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the communication device executes to implement the operation execution method described in the above aspect.

[0027] According to one aspect of the present application, a chip is provided, which includes a programmable logic circuit and / or program instructions, and when the chip is running, is used to implement the operation execution method described in the above aspects.

[0028] According to one aspect of the present application, a computer program is provided, which includes computer instructions. A processor of a communication device executes the computer instructions, so that the communication device performs the operation execution method as described in the above aspect.

[0029] The technical solutions provided by the embodiments of the present application include at least the following beneficial effects:

[0030] The terminal device is supported to perform a first operation based on a received LTM candidate cell configuration and / or a status of a serving cell of the terminal device. This enables the terminal device to consider the LTM candidate cell configuration and the cell status when performing operations related to the serving cell, thereby enabling the terminal device to operate more reasonably and efficiently in the communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] FIG1 shows a schematic diagram of a communication scenario in the related art;

[0033] FIG2 is a schematic diagram showing a serving cell deployment method in the related art;

[0034] FIG3 shows a schematic diagram of a serving cell deployment method in the related art;

[0035] FIG4 shows a schematic diagram of a communication system provided by some exemplary embodiments of the present application;

[0036] FIG5 is a flowchart illustrating an operation execution method provided by some exemplary embodiments of the present application;

[0037] FIG6 shows a schematic diagram of an LTM candidate cell configuration provided by some exemplary embodiments of the present application;

[0038] FIG7 shows a schematic diagram of an LTM candidate cell configuration provided by some exemplary embodiments of the present application;

[0039] FIG8 shows a schematic diagram of an LTM candidate cell configuration provided by some exemplary embodiments of the present application;

[0040] FIG9 shows a schematic diagram of an LTM candidate cell configuration provided by some exemplary embodiments of the present application;

[0041] FIG10 is a schematic diagram showing an LTM candidate cell configuration provided by some exemplary embodiments of the present application;

[0042] FIG11 is a schematic diagram showing an LTM candidate cell configuration provided by some exemplary embodiments of the present application;

[0043] FIG12 is a flowchart illustrating an operation execution method provided by some exemplary embodiments of the present application;

[0044] FIG13 is a flowchart illustrating an operation execution method provided by some exemplary embodiments of the present application;

[0045] FIG14 is a flowchart illustrating an operation execution method provided by some exemplary embodiments of the present application;

[0046] FIG15 is a flowchart illustrating an operation execution method provided by some exemplary embodiments of the present application;

[0047] FIG16 is a flowchart illustrating an operation execution method provided by some exemplary embodiments of the present application;

[0048] FIG17 is a flowchart illustrating an operation execution method provided by some exemplary embodiments of the present application;

[0049] FIG18 is a flowchart illustrating an operation execution method provided by some exemplary embodiments of the present application;

[0050] FIG19 shows a structural block diagram of an operation execution device provided by some exemplary embodiments of the present application;

[0051] FIG20 shows a structural block diagram of an operation execution device provided by some exemplary embodiments of the present application;

[0052] FIG21 shows a structural block diagram of an operation execution device provided by some exemplary embodiments of the present application;

[0053] FIG22 shows a schematic structural diagram of a communication device provided by some exemplary embodiments of the present application. DETAILED DESCRIPTION

[0054] To make the objectives, technical solutions, and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings. Exemplary embodiments will be described in detail herein, with examples shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0055] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0056] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining."

[0057] First, the relevant technologies involved in the embodiments of this application are introduced:

[0058] Dual Connectivity (DC) technology:

[0059] With the increasing demand for speed, latency, high-speed mobility, and energy efficiency, coupled with the increasing diversity and complexity of future communications services, the 3rd Generation Partnership Project (3GPP) has begun developing the fifth-generation (5G) mobile communications system, also known as the New Radio (NR) system or 5G NR system. The main application scenarios of the 5G system include enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine-type communications (mMTC).

[0060] eMBB still aims to provide users with multimedia content, services, and data, and demand for this technology is growing rapidly. However, since eMBB can be deployed in diverse scenarios, such as indoors, in urban areas, and in rural areas, its capabilities and requirements vary significantly. Therefore, it cannot be generalized and requires detailed analysis based on specific deployment scenarios. Typical applications of URLLC include industrial automation, power automation, remote medical operations (surgery), and traffic safety. Typical characteristics of mMTC include high connection density, small data volumes, latency-insensitive services, low module costs, and long service life.

[0061] In the early days of NR system deployment, it was difficult to obtain complete NR coverage, so the typical network coverage method was the wide-area coverage of Long Term Evolution (LTE) and the island coverage of NR. In addition, a large number of LTE deployments are in the spectrum below 6 GHz, so there is very little spectrum below 6 GHz available for 5G. Therefore, the NR system must study the application of spectrum above 6 GHz, but high-frequency bands have problems such as limited coverage and rapid signal fading. At the same time, in order to protect mobile operators' initial investment in LTE systems, a tight coupling (Tight Interworking) working mode between LTE and NR was proposed. This working mode is also called non-standalone networking (NSA) mode, which refers to the joint networking of LTE and 5G based on dual connectivity technology.

[0062] Dual connectivity means a terminal device maintains simultaneous connections with two network devices or two wireless standards. One of the two network devices acts as the primary node and the other as the secondary node, and the timing of the two is relatively independent.

[0063] Carrier Aggregation (CA) technology:

[0064] Carrier aggregation technology can aggregate multiple contiguous or non-contiguous component carriers (CCs) into a larger bandwidth. By jointly scheduling and utilizing resources on multiple component carriers, higher system peak rates can be achieved, spectrum resource utilization can be improved, and uplink and downlink rates can be increased.

[0065] These multiple continuous or non-continuous carriers are further divided into a primary component carrier (PCC) and a secondary component carrier (SCC), and each carrier corresponds to an independent cell.

[0066] There is only one PCC, and the corresponding cell is called PCell (Primary Cell). PCell is responsible for Radio Resource Control (RRC) communication with terminal devices.

[0067] The SCC only provides additional wireless resources, and the corresponding cell is called an SCell (Secondary Cell). A terminal device can be configured with one or more SCells, each of which corresponds to an index. For example, when the network adds an SCell configuration, the index value is indicated by the sCellIndex IE. There is no RRC connection between the SCell and the terminal device. An RRC reconfiguration message (RRCReconfiguration) is sent to the terminal device via the PCell to add (Addition), modify (Modification), or delete (or release) the SCell configuration.

[0068] Carrier aggregation in related technologies is typically implemented between carriers that share the same site and use the same Radio Access Technology (RAT). Co-site refers to using the same base station. Co-location refers to using the same address.

[0069] Cells and cell groups:

[0070] As shown in Figure 1, network device 110 provides communication coverage for a specific geographic area and can communicate with terminal device 120 located within the coverage area. Network device 110 can provide wireless communication services to terminal device 120 through one or more cells, such as providing services to terminal device 120 through multiple cells simultaneously.

[0071] As shown in Figure 2, one or more network devices 110 provide services to terminal device 120 through multiple cells, which are deployed in a CA manner. Cell 1 among the multiple cells is a primary cell (PCell), and cells 2 and 3 are secondary cells (SCells).

[0072] As shown in Figure 3, two network devices provide services to the terminal device 120 through multiple cells, and the multiple cells are deployed in a DC manner. In the two network devices, the network device 110 serves as the master node and the network device 130 serves as the secondary node. Correspondingly, the multiple cells are divided into two cell groups. The cells under the master node are called the master cell group (MCG), and the cells under the secondary node are called the secondary cell group (SCG). The cells in the MCG can be deployed in a CA manner, and the cells in the SCG can also be deployed in a CA manner. Among them, cell 1 in the MCG is the primary cell (PCell), cell 2 and cell 3 are secondary cells (SCell), cell 4 in the SCG is the primary secondary cell (PSCell), and cell 5 and cell 6 are secondary cells (SCell). The number of cells in the MCG and SCG can be the same or different, and there is no restriction on this.

[0073] CA technology or DC technology can improve the throughput of the terminal device 120. When the terminal device 120 does not support CA or DC, or when the terminal device 120 supports CA or DC but does not enable CA or DC, the terminal device 120 can use only one cell as the primary cell or serving cell.

[0074] SCell deactivation / sleep:

[0075] Terminal devices do not need to send and receive signaling or data on multiple carriers in every time slot. To achieve energy saving on the terminal side, SCell activation / deactivation mechanism is supported. The methods for deactivating SCell include:

[0076] 1. The network device sends a SCell Activation / Deactivation Media Access Control Control Element (SCell Activation / Deactivation MAC CE) to the terminal device;

[0077] 2. The secondary cell deactivation timer (SCellDeactivationTimer) controls the SCell to enter the inactive state from the active state.

[0078] If the SCell is in the deactivated state, the terminal device shall take at least one of the following actions:

[0079] Do not transmit Sounding Reference Signal (SRS) on the SCell.

[0080] Do not report CSI for the SCell.

[0081] Not transmit on UL-SCH on the SCell;

[0082] Not transmit on RACH on the SCell;

[0083] Do not monitor the PDCCH on the SCell.

[0084] Do not monitor the PDCCH for the SCell.

[0085] Do not transmit PUCCH on the SCell.

[0086] Furthermore, the related technology introduces the function of SCell dormancy. When the SCell or SCG is activated but there is no data transmission, a dedicated dormant bandwidth part (Dormant Bandwidth Part, Dormant BWP) is configured through RRC. The terminal device does not monitor the PDCCH on the dormant BWP, but only performs CSI measurement and reporting, which facilitates energy saving of the terminal device. When there is data transmission, the terminal device can be quickly switched to the active state by dynamically instructing it to quickly restore the service. The method of instructing the SCell to enter the dormant state is based on BWP switching: the network equipment can configure up to 4 BWPs for the terminal device on each carrier, one of which is configured as a dormant BWP, that is, PDCCH detection is not configured on the dormant BWP. When the secondary cell or secondary carrier switches to the dormant BWP, the entire secondary cell or secondary carrier enters the dormant state.

[0087] If the SCell is in the dormant state, the terminal device may take at least one of the following actions:

[0088] If the BWP inactivity timer of the serving cell is running, stop it (stop the bwp-InactivityTimer of this Serving Cell, if running);

[0089] Do not monitor the PDCCH on the BWP.

[0090] Do not monitor the PDCCH for the BWP.

[0091] Do not receive DL-SCH on the BWP.

[0092] Do not report CSI on the BWP, report CSI except aperiodic CSI for the BWP;

[0093] Do not transmit SRS on the BWP.

[0094] Do not transmit on UL-SCH on the BWP.

[0095] Do not transmit on RACH on the BWP.

[0096] Do not transmit PUCCH on the BWP.

[0097] Clear any configured downlink assignment and any configured uplink grant Type 2 associated with the SCell respectively;

[0098] Suspend any configured uplink grant Type 1 associated with the SCell;

[0099] If configured, perform beam failure detection and beam failure recovery for the SCell if beam failure is detected.

[0100] SCG deactivation:

[0101] Furthermore, related technologies consider how to efficiently activate / deactivate SCG, that is, after the network device adds SCG to the terminal device, it can indicate whether the SCG is in an active state through RRC signaling. The benefits of this technical feature are:

[0102] 1. It avoids the time of SCG adding / modifying / deleting process;

[0103] 2. Avoid power consumption issues caused by terminal devices continuously maintaining SCG connections when there is no business demand.

[0104] The network indicates whether to activate the SCG by including the scg-state field in the RRC reconfiguration or RRC resume information element (RRC Resume Information Element, RRCResume IE).

[0105] If the SCG is in the deactivated state, the terminal device's behavior includes at least one of the following:

[0106] Do not transmit SRS on the PSCell.

[0107] Do not report CSI for the PSCell.

[0108] Do not transmit on UL-SCH on the PSCell.

[0109] Do not transmit PUCCH on the PSCell.

[0110] Do not transmit on RACH on the PSCell.

[0111] Do not transmit downlink control channels in this BWP (do not monitor the PDCCH on the PSCell).

[0112] Cell switching:

[0113] The cell handover process in related technologies is triggered by Layer 3 (L3) signaling (RRC Reconfiguration). To further reduce the latency of the L3 handover process, a cell handover process triggered by Layer 1 / Layer 2 measurements or signaling is proposed. This technology is also called Layer 1 / Layer 2 Triggered Mobility Management (LTM). L1 refers to the physical layer, L2 refers to the MAC layer, Radio Link Control (RLC) layer, and Packet Data Convergence Protocol (PDCP) layer, and L3 refers to the RRC layer.

[0114] Exemplarily, the cell handover process based on L1 / L2 measurement or signaling generally includes the following steps:

[0115] 1. Receiving candidate cell configuration: The terminal device receives multiple candidate cell configuration information sent by the network device.

[0116] 2. Measurement and reporting of measurement results: The terminal device performs L1 measurement on all or part of the candidate cells to obtain beam-level or cell-level measurement results; the terminal device reports the measurement results to the current serving cell according to the configuration.

[0117] 3. The terminal device receives L1 / L2 signaling from the network device and switches to the target cell. L1 / L2 signaling is used to select a target cell from multiple candidate cells. Furthermore, L1 / L2 signaling may also indicate / activate a Transmission Configuration Indicator (TCI) state for the target cell, providing the terminal device with information about the beam operating in the target cell.

[0118] The network device's LTM decision is based on the Layer 1 (L1) measurement results reported by the terminal device. The signaling sent by the network device to trigger LTM is a MAC CE. LTM refers to a cell handover decision based on Layer 1 / L2 measurements or signaling, including information such as the target cell and operating beam.

[0119] When the terminal device configures the serving cell in a CA manner, the LTM candidate cell may include the current serving cell.

[0120] When the terminal device configures the serving cell in a DC manner, both MCG and SCG can be configured as candidate cells for LTM switching.

[0121] Related technologies also support the terminal device to initiate random access to the candidate cell in advance before receiving the LTM switching indication, so as to reduce the delay of the uplink synchronization process.

[0122] However, if an SCell is configured as an LTM candidate cell but is deactivated or enters a dormant state, L1 / L2 measurements and reporting cannot be performed, measurement results for LTM decision-making cannot be provided to network devices, and actions related to early uplink synchronization cannot be performed.

[0123] Similarly, if the network device configures the LTM candidate cell configuration for the terminal device for SCG to perform LTM switching, but the SCG is deactivated, L1 / L2 measurement and reporting cannot be performed, measurement results for LTM decision-making cannot be provided to the network device, and actions related to early uplink synchronization cannot be performed.

[0124] Based on the above problems, the present application proposes an operation execution method, which executes operations through terminal devices, supports the service cell configured as an LTM candidate cell from being deactivated or dormant, and also supports the terminal device to provide measurement results to the network device, perform early uplink synchronization and other related operations when the service cell configured as an LTM candidate cell enters a deactivated state or a dormant state.

[0125] 4 shows a schematic diagram of a communication system provided by some exemplary embodiments of the present application, wherein the communication system includes a network device 410 and a terminal device 420 .

[0126] The network device 410 in the present application is a device with wireless transceiver functions, and the network device 410 includes but is not limited to: Evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (e.g., Home Evolved Node B, or Home Node B, HNB), Baseband Unit (BBU), Access Point (AP) in Wireless Fidelity (Wi-Fi) system, Wireless Relay Node, Wireless Backhaul Node, Transmission Point (TP) or Transmission and Reception Point (TRP), etc. It can also be the Next Generation Node B (NGNB) in the fifth generation (5G) mobile communication system. B, gNB) or transmission point (TRP or TP), or one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G system, or a network node constituting a gNB or transmission point, such as a baseband unit (BBU) or a distributed unit (DU), or a base station in a Beyond Fifth Generation (B5G) or a sixth generation (6G) mobile communication system, or a core network (CN), fronthaul, backhaul, radio access network (RAN), network slicing, etc. The network device may be a device including one or more of a centralized unit (CU) node, a DU node, and an active antenna unit (AAU) node. In addition, the CU can be divided into a network device in the RAN, or the CU can be divided into a network device in the CN, and this application does not limit this.

[0127] The terminal device 420 in this application is a device with wireless transceiver functions, or is called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, user device. The terminals include, but are not limited to, handheld devices, wearable devices, vehicle-mounted devices, and Internet of Things devices, such as mobile phones, tablet computers, e-book readers, laptop computers, desktop computers, televisions, game consoles, mobile Internet devices (MIDs), augmented reality (AR) terminals, virtual reality (VR) terminals, and mixed reality (MR) terminals, wearable devices, handles, electronic tags, controllers, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, wireless terminals in remote medical surgery, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loops (WLANs), and wireless terminals in industrial control. Loop (WLL) stations, personal digital assistants (PDA), TV set-top boxes (STB), customer premises equipment (CPE), etc.

[0128] The terminal device 420 is within the coverage of the network device 410. The network device 410 and the terminal device 420 communicate with each other via some air interface technology, such as a Uu interface.

[0129] Exemplarily, there are two communication scenarios between the network device 410 and the terminal device 420: an uplink communication scenario and a downlink communication scenario. Uplink communication refers to sending signals to the network device 410; downlink communication refers to sending signals to the terminal device 420.

[0130] The technical solutions provided in the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Orthogonal Frequency Division Multiplexing (OFDM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Advanced Long Term Evolution (LTE-A) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, 5G mobile communication system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-based access to unlicensed spectrum). spectrum, LTE-U) system, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed spectrum, terrestrial communication network (Terrestrial Networks, TN) system, non-terrestrial communication network (Non-Terrestrial Networks, NTN) system, wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, Wi-Fi), cellular Internet of Things system, cellular passive Internet of Things system, and may also be applicable to subsequent evolution systems of 5G NR system, and may also be applicable to B5G, 6G and subsequent evolution systems. In some embodiments of the present application, "NR" may also be referred to as 5G NR system or 5G system.The 5G mobile communication system may include non-standalone (NSA) and / or standalone (SA) networking. Furthermore, the terminal device 420 may also include a smart printer, a train detector, a gas station sensor, etc., with its primary functions including at least one of collecting data, receiving control information and downlink data from the network device 410, and transmitting uplink data to the network device 410.

[0131] The technical solutions provided in the embodiments of the present application can also be applied to machine type communication (MTC), long term evolution technology for machine-to-machine communication (LTE-M), device-to-device (D2D) network, machine-to-machine (M2M) network, Internet of Things (IoT) network or other networks. Among them, the IoT network can include, for example, the Internet of Vehicles. Among them, the communication mode in the Internet of Vehicles system is collectively referred to as vehicle to other devices (Vehicle to X, V2X, X can represent anything), for example, the V2X can include: vehicle to vehicle (V2V) communication, vehicle to infrastructure (V2I) communication, vehicle to pedestrian communication (V2P) or vehicle to network (V2N) communication, etc.

[0132] Network device 410 and terminal device 420 may each be configured with multiple antennas, which may include at least one transmit antenna for transmitting signals and at least one receive antenna for receiving signals. Furthermore, each communication device also includes a transmitter chain and a receiver chain. Those skilled in the art will appreciate that each may include multiple components related to signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, or antennas). Therefore, network device 410 and terminal device 420 may communicate using multi-antenna technology.

[0133] The communication system provided in the present application can be applied to but not limited to at least one of the following communication scenarios: uplink communication scenario, downlink communication scenario, and sidelink communication scenario.

[0134] FIG5 is a flow chart illustrating an operation execution method provided by some exemplary embodiments of the present application. The method is applicable to CA scenarios and / or DC scenarios. The method is executed by the terminal device shown in FIG4 . The method includes at least some of the following steps:

[0135] Step 710: Receive LTM candidate cell configuration;

[0136] The LTM candidate cell configuration is used to configure LTM candidate cells for a terminal device. The LTM candidate cell configuration includes the configuration of LTM candidate cells and / or the configuration of candidate cells for a cell group to perform LTM.

[0137] Step 730: Perform a first operation based on the LTM candidate cell configuration and / or the status of the serving cell of the terminal device.

[0138] The state of the service cell of the terminal device includes at least one of an activated state, a deactivated state, and a dormant state.

[0139] The first operation is an operation related to the serving cell of the terminal device. That is, the first operation can be sending information related to the serving cell, receiving information related to the serving cell, or performing at least one of operations related to the serving cell, such as measuring, reporting measurement results, uplink synchronization, monitoring, transmitting, switching cells, switching BWP, switching cell status, etc.

[0140] In some embodiments, the first operation may also be an operation related to whether the terminal device can execute the target behavior, maintain the execution of the target behavior, or ensure the execution of the target behavior under the current state of the serving cell, wherein the target behavior is a behavior related to LTM.

[0141] The first operation is performed autonomously by the terminal device, or is triggered by the network device to be performed by the terminal device, or is performed by the terminal device based on a predefined communication protocol.

[0142] The terminal device performs the first operation periodically, semi-periodically, aperiodically, or based on an event trigger. The period value is determined by the terminal device, determined by the network device, or predefined by the communication protocol.

[0143] The network device in this application may refer to one network device or may refer to the collective name of at least two network devices, for example, the network device is the collective name of MN and SN.

[0144] In this application, "operation" can also be understood as "behavior." Similarly, the "first operation" can also be called the "first behavior."

[0145] In this application, the serving cell of the terminal device refers to the current serving cell of the terminal device.

[0146] In summary, the method provided by this application supports a terminal device to perform a first operation based on a received LTM candidate cell configuration and / or the status of the terminal device's serving cell. This allows the terminal device to consider the LTM candidate cell configuration and cell status when performing operations related to the serving cell, enabling more reasonable and efficient operation in the communication system.

[0147] As mentioned above, "LTM candidate cell configuration includes configuration of LTM candidate cells and / or configuration of candidate cells for cell groups to execute LTM." The following details the meaning of this sentence in different service cell deployment modes.

[0148] 1. When the serving cell of the terminal device is deployed in CA mode

[0149] For example, a terminal device is configured with three serving cells. Based on the previously described CA technology, there is a primary cell among these three serving cells. This is illustrated by assuming that the three serving cells are Cell 1, Cell 2, and Cell 3, with Cell 1 being the primary cell and Cells 2 and 3 being the secondary cells.

[0150] 1. The LTM candidate cells configured for the terminal device are all serving cells of the terminal device;

[0151] 6 , the network device 110 communicates with the terminal device 120 through cell 1, cell 2, and cell 3. The network device 110 sends an LTM candidate cell configuration to the terminal device 120, configuring two LTM candidate cells for the terminal device, namely, cell 1 and cell 3, or, respectively, cell 2 and cell 3.

[0152] 2. At least one of the LTM candidate cells configured for the terminal device is a serving cell of the terminal device.

[0153] For example, as shown in FIG7 , network device 110 communicates with terminal device 120 via cell 1, cell 2, and cell 3. Network device 110 sends an LTM candidate cell configuration to terminal device 120, which includes three LTM candidate cells: cell 1, cell 3, and cell 4. Cell 4 is not the serving cell of terminal device 120, but is the serving cell of terminal device 130.

[0154] 2. When the service cell of the terminal device is deployed in DC mode

[0155] For example, a terminal device is configured with six serving cells. Based on the DC technology described above, these six serving cells form an MCG and an SCG. For example, let's assume the six serving cells are cells 1 through 6. Cells 1 through 3 belong to the MCG, with cell 1 in the MCG being the PCell and cells 2 and 3 being the SCells. Cells 4 through 6 belong to the SCG, with cell 4 in the SCG being the PSCell and cells 5 and 6 being the SCells. The terminal device communicates with two network devices through the MCG and SCG, respectively.

[0156] 1. The LTM candidate cells configured for the terminal device are all serving cells of the terminal device;

[0157] For example, as shown in FIG8 , network device 110, network device 130, and terminal device 120 communicate via MCG and SCG, respectively. Network device 130 sends an LTM candidate cell configuration to terminal device 120, configuring two LTM candidate cells for the terminal device, such as cell 1 and cell 3 both belonging to the MCG, or cell 4 and cell 5 both belonging to the SCG, or cell 1 and cell 4 both belonging to the MCG and SCG, respectively.

[0158] 2. At least one of the LTM candidate cells configured for the terminal device is a serving cell of the terminal device;

[0159] For example, as shown in FIG9 , network device 110, network device 130, and terminal device 120 communicate via the MCG and SCG, respectively. Network device 130 sends an LTM candidate cell configuration to terminal device 120, which includes three LTM candidate cells: cell 1, cell 6, and cell 7. Cell 7 is not the serving cell of terminal device 120, but is the serving cell of terminal device 140.

[0160] 3. The LTM candidate cell configuration sent to the terminal device is used for a cell group of the terminal device to perform LTM handover;

[0161] 10 , network device 110, network device 130, and terminal device 120 communicate via MCG and SCG, respectively. Network device 130 sends an LTM candidate cell configuration to terminal device 120, including an LTM candidate cell configuration for MCG to execute LTM, or an LTM candidate cell configuration for SCG to execute LTM.

[0162] 4. The LTM candidate cell configuration sent to the terminal device is used for the two cell groups of the terminal device to perform LTM switching.

[0163] Exemplarily, as shown in Figure 11, network device 110, network device 130, and terminal device 120 communicate via MCG and SCG, respectively. Network device 130 sends an LTM candidate cell configuration to terminal device 120, including an LTM candidate cell configuration for MCG to execute LTM and an LTM candidate cell configuration for SCG to execute LTM.

[0164] The cell group configured with the LTM candidate cell configuration for performing LTM handover may or may not contain LTM candidate cells. That is, if the LTM candidate cell configuration includes the LTM candidate cell configuration for the MCG to perform LTM, then the MCG may or may not contain LTM candidate cells.

[0165] A cell group that is not configured with an LTM candidate cell configuration for performing LTM handover may or may not contain LTM candidate cells. That is, if the LTM candidate cell configuration does not include an LTM candidate cell configuration for performing LTM in the SCG, then LTM candidate cells may or may not exist in the SCG.

[0166] In some embodiments, the LTM candidate cell configurations for two cell groups of a terminal device to perform LTM handover are sent simultaneously by the network device, or are sent separately by the network device. For example, the LTM candidate cell configurations sent by the network device include both the LTM candidate cell configuration for the MCG to perform LTM and the LTM candidate cell configuration for the SCG to perform LTM; or, the network device sends the LTM candidate cell configuration for the MCG to perform LTM and the LTM candidate cell configuration for the SCG to perform LTM separately.

[0167] In some embodiments, the network device that sends the LTM candidate cell configuration for the MCG to perform LTM is the same as or different from the network device that sends the LTM candidate cell configuration for the SCG to perform LTM. For example, the MN sends the LTM candidate cell configuration for the MCG to perform LTM and the LTM candidate cell configuration for the SCG to perform LTM respectively; or, the SN sends the LTM candidate cell configuration for the MCG to perform LTM and the LTM candidate cell configuration for the SCG to perform LTM respectively; or, the MN sends the LTM candidate cell configuration for the MCG to perform LTM and the SN sends the LTM candidate cell configuration for the SCG to perform LTM; or, the SN sends the LTM candidate cell configuration for the MCG to perform LTM and the MN sends the LTM candidate cell configuration for the SCG to perform LTM.

[0168] FIG12 is a flow chart illustrating a method for executing operations provided in some exemplary embodiments of the present application. The method is applicable to CA scenarios and / or DC scenarios. The method is executed by the terminal device shown in FIG4 . The method includes at least some of the following steps:

[0169] Step 1410: Receive LTM candidate cell configuration;

[0170] The LTM candidate cell configuration is used to configure LTM candidate cells for a terminal device. The LTM candidate cell configuration includes the configuration of LTM candidate cells and / or the configuration of candidate cells for a cell group to perform LTM.

[0171] Step 1420: Determine the first cell based on the physical cell identity (PCI);

[0172] The first cell is a secondary cell in the serving cell of the terminal device that is configured as an LTM candidate cell.

[0173] When the PCI of the LTM candidate cell in the LTM candidate configuration is the same as the PCI of the secondary cell in the terminal device's serving cell, the secondary cell is determined to be the primary cell. This step can also be understood as the terminal device determining whether the primary cell exists in the LTM candidate cells and / or determining whether the primary cell exists in the serving cell based on the PCI of the LTM candidate cell and the PCI of the secondary cell.

[0174] In some embodiments, the PCI of the LTM candidate cell includes at least one of the following:

[0175] PCI of the LTM candidate cell;

[0176] PCI of the primary cell among the LTM candidate cells;

[0177] PCI of the primary and secondary cells in the LTM candidate cells.

[0178] Step 1430: Perform a first operation based on the LTM candidate cell configuration and / or the state of the at least one cell;

[0179] The state of the service cell of the terminal device includes at least one of an activated state, a deactivated state, and a dormant state.

[0180] The first operation is an operation related to the serving cell of the terminal device. That is, the first operation can be sending information related to the serving cell, receiving information related to the serving cell, or performing at least one of operations related to the serving cell, such as measuring, reporting measurement results, uplink synchronization, monitoring, transmitting, switching cells, switching BWP, switching cell status, etc.

[0181] The first operation is performed autonomously by the terminal device, or is triggered by the network device to be performed by the terminal device, or is performed by the terminal device based on a predefined communication protocol.

[0182] In some embodiments, considering that the terminal device may perform different operations under different LTM candidate cell configurations, step 1430 may be implemented as step 1430a and / or step 1430b.

[0183] Step 1430a: Based on the LTM candidate cell configuration, send a notification message and / or do not start the secondary cell deactivation timer of the first cell;

[0184] The notification message is used to indicate service cell information related to the LTM candidate cell configuration; or, the notification message is used to notify the service cell configured as the LTM candidate cell, and / or the LTM candidate cell configuration configured for the SCG to perform LTM. The notification message includes a first message and / or a second message. The first message includes a cell index of the first cell, and / or a cell index of the LTM candidate cell. The second message includes a message for indicating that there is an LTM candidate cell configuration for the first cell group to perform LTM, or that there is no LTM candidate cell configuration for the first cell group to perform LTM. The first cell group is a secondary cell group in the service cell of the terminal device.

[0185] In some embodiments, the LTM candidate cell configuration is configured by the SN. If the SN does not synchronize the LTM candidate cell configuration to the MN, the MN cannot obtain the LTM candidate cell configuration, and may set the serving cell configured as the LTM candidate cell to a deactivated state, resulting in the failure of LTM to proceed smoothly.

[0186] The first cell is determined based on the LTM candidate cell configuration, and the first cell is a secondary cell configured as an LTM candidate cell in the serving cell of the terminal device.

[0187] The cell index of the first cell includes at least one of the secondary cell index of the first cell, the candidate index of the first cell, and the PCI. The candidate index is an identifier corresponding to each LTM candidate cell and is indicated by the LTM candidate cell configuration. Optionally, the candidate index is a temporary identifier.

[0188] During the timing of the secondary cell deactivation timer of the first cell, if the terminal device does not monitor the PDCCH or receive service data on the first cell, the first cell is actively deactivated.

[0189] In some embodiments, the terminal device does not start the secondary cell deactivation timer of the first cell, or the value of the secondary cell deactivation timer of the first cell is configured to a first value, such as "infinity", and the terminal device is not allowed to deactivate the first cell.

[0190] In some embodiments, the terminal device sends a first message to the network device, and / or the RRC layer of the terminal device sends the first message to the MAC layer of the terminal device, and / or the RRC layer of the terminal device sends the first message to the physical layer (PHY) of the terminal device.

[0191] In some embodiments, the RRC layer of the terminal device sends the first message to the MAC layer, the MAC layer sends the first message to the PHY layer, and the PHY layer sends the first message to the network device. In some embodiments, the RRC layer of the terminal device sends the first message to the MAC layer, and the MAC layer sends the first message to the network device via a layer 2 message.

[0192] In some embodiments, the RRC layer of the terminal device sends the first message to the PHY layer, and the PHY layer sends the first message to the network device through a layer 1 message.

[0193] In some embodiments, the terminal device sends the second message to the network device, or sends the second message to the master node.

[0194] In some embodiments, the MN sends the LTM candidate cell configuration to the terminal device, and the terminal device sends a notification message to the MN and / or the SN.

[0195] In some embodiments, the SN sends the LTM candidate cell configuration to the terminal device, and the terminal device sends a notification message to the MN and / or the SN.

[0196] In some embodiments, the terminal device sends a notification message when a first condition is met, wherein the first condition includes at least one of the following:

[0197] The terminal device receives the LTM candidate cell configuration, and the first cell (i.e., the secondary cell configured as the LTM candidate cell) exists in the serving cell;

[0198] The terminal device completes the LTM process, and the first cell exists in the serving cell;

[0199] The terminal device receives first indication information, where the first indication information is used to instruct deactivation of the first cell;

[0200] The terminal device receives second indication information, where the second indication information is used to instruct the first cell to switch to the dormant BWP;

[0201] The terminal device receives an LTM candidate cell configuration for performing LTM on the first cell group.

[0202] In some embodiments, LTM supports a continuous process. That is, after a terminal device receives an LTM candidate cell configuration and executes an LTM process, it can continue to retain the LTM candidate cell configuration and execute one or more subsequent LTM processes. Due to the execution of an LTM process, the information contained in the notification message may change. For example, if the first cell information contained in the first message changes, the notification message needs to be re-reported. The terminal device needs to re-determine the first cell based on the LTM candidate cell configuration and the latest serving cell composition after the LTM process is executed.

[0203] In some embodiments, after receiving the LTM candidate cell configuration, the terminal device determines whether the first cell exists in the serving cell.

[0204] In some embodiments, after completing the LTM process, the terminal device determines whether the first cell exists in the serving cell.

[0205] In some embodiments, when the PCI of the LTM candidate cell is the same as the PCI of the secondary cell, the RRC layer of the terminal device determines the secondary cell as the first cell;

[0206] The RRC layer of the terminal device indicates at least one of the secondary cell index (SCellIndex), candidate index (Candidate index), and PCI of the secondary cell to the MAC layer of the terminal device and / or the PHY layer of the terminal device.

[0207] In some embodiments, when the PCI of the LTM candidate cell is the same as the PCI of the secondary cell, the RRC layer of the terminal device determines the secondary cell as the first cell;

[0208] The RRC layer of the terminal device indicates at least one of the PCI of the LTM candidate cell and the candidate index of the LTM candidate cell to the MAC layer and / or the PHY layer of the terminal device. The candidate index of the LTM candidate cell refers to the candidate indexes of all LTM candidate cells included in the LTM candidate cell configuration; or the candidate index of the LTM candidate cell refers to the candidate index of the LTM candidate cell that is the serving cell of the terminal device in the LTM candidate cell configuration.

[0209] The execution of step 1430a, when the LTM candidate cell configuration includes the configuration of the first cell, the operation of the terminal device supports the network device not to deactivate / sleep the first cell, which can ensure that the first cell can work normally, provide measurement results to the network device, perform early uplink synchronization and other related operations, and ensure the smooth progress of the LTM process.

[0210] Step 1430b: Perform a second operation based on the state of the serving cell;

[0211] In some embodiments, the first cell in the service cell, or the first cell group configured as a candidate cell for performing LTM on the first cell group, enters or is in a deactivated state or a dormant state. Then, referring to the contents of "SCell deactivation / dormancy" and "SCG deactivation" in the previous text, the first cell and the first cell group may be unable to perform some measurement, transmission, monitoring and other operations, which will affect the first cell and the first cell group from providing the network device with the measurement results that should / need to be provided, and from performing related operations such as early uplink synchronization that should / need to be performed.

[0212] In some embodiments, the second operation is all or part of the behavior of the terminal device in the activated state; or, the second operation is the behavior of the terminal device in the activated state related to the LTM; or, the second operation is the behavior related to the LTM.

[0213] The status of a serving cell includes three situations: 1. The status of one or more serving cells; 2. The status of one or more cell groups; 3. The status of one or more serving cells and the status of one or more cell groups.

[0214] In some embodiments, when the state of the first cell is a deactivated state or a dormant state, the second operation is performed.

[0215] In some embodiments, when a second condition is met, the first cell enters a deactivated state or a dormant state. The second condition includes at least one of the following:

[0216] receiving first indication information, where the first indication information is used to instruct deactivation of the first cell;

[0217] The secondary cell deactivation timer corresponding to the first cell times out;

[0218] · Receiving second indication information, where the second indication information is used to instruct the first cell to switch to a dormant BWP.

[0219] In some embodiments, the second operation is performed during the timing of a first timer. The first timer is started autonomously by the terminal device, triggered by a network device, or started by the terminal device based on a predefined communication protocol. The first timer is stopped autonomously by the terminal device, triggered by a network device, or stopped by the terminal device based on a predefined communication protocol.

[0220] It should be understood that, in this application, "timer stop" and "timer timeout" are not synonymous. A timer stop refers to the timer ceasing to run, ceasing to operate, pausing to run, or pausing to operate. A timer timeout refers to the timer reaching its set time, completing its timer count, or exceeding a threshold.

[0221] In some embodiments, the working method of the first timer includes at least one of the following:

[0222] When the first cell enters a deactivated state or a dormant state, starting a first timer;

[0223] Periodically starting a first timer;

[0224] Semi-periodically start the first timer;

[0225] When the first cell enters the activated state, stop the first timer;

[0226] When the first cell enters a non-dormant state, stopping the first timer;

[0227] When the first cell is released (or deleted), stop the first timer;

[0228] When the LTM switching instruction is received, the first timer is stopped.

[0229] The period value is determined autonomously by the terminal device, or by the network device, or predefined by the communication protocol.

[0230] For example, the periodic activation of the first timer is performed with a period value of TI, and the timing duration of the first timer is T2. Then, the time difference between the nth activation time of the first timer and the nth timeout time is T2, the time difference between the nth activation time of the first timer and the n+1th activation time is T1, and the time difference between the nth timeout time of the first timer and the n+1th activation time is T1-T2. In other words, each time the first timer times out, it will start again after the duration T1-T2 has passed.

[0231] Semi-periodically starting the first timer can be understood as that the first timer is started periodically during a certain period of time, and is started non-periodically during another period of time, such as being triggered by a network device, or started when the first cell enters a deactivated state, or started when the first cell enters a dormant state.

[0232] In some embodiments, when the first cell is in a dormant state, the first cell switches to a non-dormant BWP during a first timer; and / or, when the first timer expires, the first cell switches to the dormant BWP.

[0233] By executing the above steps, when the LTM candidate cell configuration includes the configuration of the first cell, even if the first cell is deactivated / dormant, the terminal device can provide measurement results to the network device, perform early uplink synchronization and other related operations, thereby ensuring the smooth progress of the LTM process.

[0234] In some embodiments, when the first cell group is in a deactivated state, the second operation is performed. The first cell group is a secondary cell group in a serving cell of the terminal device, including at least one cell. The LTM candidate cell configuration includes a candidate cell configuration for performing LTM on the first cell group.

[0235] In some embodiments, the first cell group enters a deactivated state when a third condition is met, wherein the third condition includes: receiving third indication information, the third indication information being used to instruct deactivation of the first cell group.

[0236] In some embodiments, the second operation is performed during the timing of a second timer. The second timer is started autonomously by the terminal device, triggered by the network device, or started by the terminal device based on a predefined communication protocol. The second timer is stopped autonomously by the terminal device, triggered by the network device, or stopped by the terminal device based on a predefined communication protocol.

[0237] In some embodiments, the operating method of the second timer includes at least one of the following:

[0238] When the first cell group enters the deactivated state, starting a second timer;

[0239] Periodically start a second timer;

[0240] Semi-periodically start the second timer;

[0241] When the first cell group enters the activated state, stop the second timer;

[0242] When the first cell group is released (or deleted), the second timer is stopped.

[0243] The period value is determined autonomously by the terminal device, or by the network device, or predefined by the communication protocol.

[0244] For example, the periodic activation of the second timer is set to T3, and the second timer's duration is T4. Then, the time difference between the nth activation of the second timer and the nth timeout is T4, the time difference between the nth activation of the second timer and the n+1th activation is T3, and the time difference between the nth timeout of the second timer and the n+1th activation is T3-T4. In other words, each time the second timer times out, it will restart after a duration of T3-T4.

[0245] Semi-periodically starting the second timer can be understood as that the second timer is started periodically during a certain period of time, and is started non-periodically during another period of time, such as being triggered by a network device or started when the first cell group enters a deactivated state.

[0246] The execution of the above steps, when the LTM candidate cell configuration includes a candidate cell configuration for executing LTM in the first cell group, even if the first cell group is deactivated / dormant, the terminal device can provide measurement results to the network device, perform early uplink synchronization and other related operations, thereby ensuring the smooth progress of the LTM process.

[0247] In some embodiments, the first timer is started in the same manner as or different from the second timer.

[0248] In some embodiments, the timing time of the first timer is the same as or different from the timing time of the second timer.

[0249] In some embodiments, the first timer is stopped in the same manner as or differently from the second timer.

[0250] In some embodiments, the second operation includes at least one of the following:

[0251] Measurement operations;

[0252] LTM switching operation;

[0253] ·Pre-emptive uplink synchronization.

[0254] In some embodiments, the measuring operation includes at least one of the following:

[0255] Perform CSI measurement on the first cell;

[0256] Report the CSI report of the first cell;

[0257] Sending SRS to the first cell;

[0258] Send CSI reports of the PSCell in the SCG to the MN;

[0259] Send CSI reports of SCells in the SCG to the MN;

[0260] Send CSI reports of PCell in MCG to SN;

[0261] Send CSI reports of SCells in MCG to SN;

[0262] Perform uplink transmission on the SRS resources of the first cell;

[0263] Perform uplink transmission on the SRS resources of the PScell.

[0264] Among them, CSI measurement is a channel measurement method in the downlink transmission direction, and SRS is a channel measurement method in the uplink transmission direction.

[0265] In some embodiments, the LTM switching operation includes at least one of the following:

[0266] Monitor LTM switching information / commands / indications, which are used to instruct the execution of LTM switching;

[0267] Monitor the PDCCH scheduled by the first cell;

[0268] Monitor the PDCCH of other serving cells scheduling the first cell;

[0269] Monitor the PDCCH scheduled by the PScell;

[0270] Monitor the PDCCH scheduled by the PCell;

[0271] Perform LTM switchover.

[0272] The LTM switching information / command / indication is sent via layer 1 or layer 2 signaling, and monitoring of the scheduled PDCCH is for monitoring the LTM switching information / command / indication.

[0273] In some embodiments, the terminal device further performs the following operations:

[0274] When the MCG receives information for instructing the MCG to perform LTM switching, the MCG performs the LTM switching operation;

[0275] and / or, when the SCG receives information for instructing the SCG to perform the LTM switching, performing the LTM switching operation at the SCG;

[0276] and / or, when the MCG receives information for instructing the SCG to perform the LTM switching, sending the information for instructing the SCG to perform the LTM switching to the SCG;

[0277] And / or, when the SCG receives information for instructing the MCG to perform LTM switching, the SCG sends the information for instructing the MCG to perform LTM switching to the MCG.

[0278] In some embodiments, the early uplink synchronization operation includes at least one of the following:

[0279] Initiate random access to the first cell;

[0280] Sending a preamble to the first cell;

[0281] Perform uplink transmission on the uplink channel of the first cell;

[0282] Perform uplink transmission on the random access channel of the first cell;

[0283] Perform uplink transmission on the uplink channel of the PScell;

[0284] Uplink transmission on the random access channel of the PScell;

[0285] The other service cells are cells in the service cells of the terminal device except the first cell.

[0286] In summary, the method provided by this application supports a terminal device to perform a first operation based on a received LTM candidate cell configuration and / or the status of the terminal device's serving cell. This allows the terminal device to consider the LTM candidate cell configuration and cell status when performing operations related to the serving cell, enabling more reasonable and efficient operation in the communication system.

[0287] It also takes into account the different operations performed by the terminal device under different LTM candidate cell configurations. If the LTM candidate cell configuration includes the configuration of the first cell, then the operation of the terminal device supports the network device not to deactivate / sleep the first cell, or, even if the first cell is deactivated / sleep, the terminal device can provide the network device with measurement results, perform early uplink synchronization and other related operations. If the LTM candidate cell configuration includes the candidate cell configuration for performing LTM on the secondary cell group, then the operation of the terminal device supports the network device not to deactivate the first cell group, or, even if the first cell group is deactivated / sleep, the terminal device can provide the network device with measurement results, perform early uplink synchronization and other related operations.

[0288] FIG13 is a flow chart illustrating an operation execution method provided by some exemplary embodiments of the present application. The method is applicable to CA scenarios and / or DC scenarios. The method is executed by the terminal device shown in FIG4 . The method includes at least some of the following steps:

[0289] Step 1510: Receive LTM candidate cell configuration;

[0290] The LTM candidate cell configuration is used to configure LTM candidate cells for a terminal device. The LTM candidate cell configuration includes the configuration of LTM candidate cells and / or the configuration of candidate cells for a cell group to perform LTM.

[0291] In some embodiments, the LTM candidate cell configuration includes K LTM candidate cells, where K is an integer greater than 0. At least one cell among the K LTM candidate cells is a current serving cell of the terminal device.

[0292] Exemplarily, the LTM candidate cell configuration includes three LTM candidate cells, whose candidate indexes are C0, C1, and C2, respectively. The terminal device's current serving cells include cell 0 (PCell), cell 1 (SCell), and cell 3 (SCell). Among them, the LTM candidate cell with candidate index C2 is cell 1.

[0293] In some embodiments, the serving cell of the terminal device includes an MCG and an SCG, and the LTM candidate cell configuration includes a candidate cell configuration for the MCG and / or SCG to perform LTM.

[0294] Step 1520: Determine whether the first cell exists;

[0295] The first cell is a secondary cell in the serving cell of the terminal device that is configured as an LTM candidate cell.

[0296] This step is to determine whether there is a secondary cell of the terminal device among the LTM candidate cells included in the LTM candidate cell configuration. Alternatively, this step can also be understood as determining the first cell among the LTM candidate cells or the serving cell.

[0297] In some embodiments, after receiving the LTM candidate cell configuration and / or after switching to the target cell, the terminal device determines whether the first cell exists, wherein the target cell is a target cell for LTM switching, and the target cell is indicated by the network device or indicated by the network device based on the LTM decision.

[0298] The first cell is determined based on the PCI. When the PCI of the LTM candidate cell in the LTM candidate configuration is the same as the PCI of the secondary cell in the serving cell of the terminal device, the secondary cell is determined to be the first cell.

[0299] If the judgment result is that the first cell exists, at least step 1530 and step 1540 are executed.

[0300] If the judgment result is that the first cell does not exist, at least step 1530 and step 1540 are not executed.

[0301] Step 1530: The RRC layer sends a first message to the MAC layer and / or the PHY layer;

[0302] The first message includes the cell index of the first cell and / or the cell index of the LTM candidate cell.

[0303] The cell index of the first cell includes at least one of a secondary cell index of the first cell, a candidate index of the first cell, and a PCI of the first cell.

[0304] The cell index of the LTM candidate cell includes the candidate index of the LTM candidate cell and / or the PCI of the LTM candidate cell. The candidate index of the LTM candidate cell includes the candidate indexes of all LTM candidate cells in the LTM candidate cell configuration; or the candidate index of the LTM candidate cell that is the serving cell of the terminal device in the LTM candidate cell configuration.

[0305] If the serving cell of the terminal device exists in the LTM candidate cell configuration, the serving cell includes at least a PCell / PSCell, or the serving cell includes at least a PCell / PSCell and at least one SCell.

[0306] If there is one LTM candidate cell in the LTM candidate cell configuration, the PCI of the LTM candidate cell is the PCI corresponding to this LTM candidate cell. If there are at least two LTM candidate cells in the LTM candidate cell configuration, the PCI of the LTM candidate cell is the PCI corresponding to the cell of the at least two LTM candidate cells that serves as the PCell of the terminal device, or the PCI corresponding to the cell of the at least two LTM candidate cells that serves as the PSCell of the terminal device.

[0307] Exemplarily, the RRC layer of the terminal device indicates the secondary cell index of cell 1 and / or the candidate index corresponding to cell 1 (such as C2) to the MAC layer.

[0308] Step 1540: Send a first message to the network device;

[0309] When a first condition is met, the terminal device sends a first message. The first condition includes at least one of the following:

[0310] The terminal device receives the LTM candidate cell configuration, and the first cell exists in the serving cell;

[0311] The terminal device completes the LTM process, and the first cell exists in the serving cell;

[0312] The terminal device receives first indication information, where the first indication information is used to instruct deactivation of the first cell;

[0313] The terminal device receives second indication information, where the second indication information is used to instruct the first cell to switch to the dormant BWP;

[0314] The terminal device receives an LTM candidate cell configuration for performing LTM on the first cell group.

[0315] Exemplarily, the first indication information is carried in a SCell Activation / Deactivation Media Access Control Control Element (SCell Activation / Deactivation MAC CE) and sent.

[0316] Exemplarily, the second indication information is a BWP switching indication, and the target BWP in the BWP switching indication is a dormant BWP.

[0317] Step 1550: Do not start the secondary cell deactivation timer of the first cell;

[0318] In some embodiments, the terminal device does not start the secondary cell deactivation timer of the first cell, or the value of the secondary cell deactivation timer of the first cell is configured to a first value, such as "infinity", and the terminal device is not allowed to deactivate the first cell.

[0319] Step 1560: Send a second message to the network device or MN.

[0320] The second message includes a message for indicating that there is an LTM candidate cell configuration for performing LTM on the first cell group, or that there is no LTM candidate cell configuration for performing LTM on the first cell group, wherein the first cell group is a secondary cell group in the serving cell of the terminal device.

[0321] If the terminal device receives the LTM candidate cell configuration sent by the network device, it sends a second message to the network device.

[0322] If the terminal device receives the LTM candidate cell configuration for executing LTM for the first cell group sent by the SN, or if the SN sends the LTM candidate cell configuration for executing LTM for the first cell group to the terminal device, the SN sends a second message to the MN. Exemplarily, the SN sends the second message to the MN via Xn interface application protocol (Xn Application Protocol, XnAP) signaling.

[0323] To sum up, the method provided in the present application is that the terminal device performs the first operation based on the received LTM candidate cell configuration, and through the interaction between the network device and the terminal device, or the MN, SN and the terminal device, the network device does not deactivate / sleep the first cell or the first cell group, and supports the first cell or the first cell group to be in an activated state as much as possible, thereby providing measurement results for the network device, performing early uplink synchronization and other related operations.

[0324] FIG14 is a flow chart illustrating an operation execution method provided by some exemplary embodiments of the present application. The method is applicable to CA scenarios and / or DC scenarios. The method is executed by the terminal device shown in FIG4 . The method includes at least some of the following steps:

[0325] Step 1610: Receive LTM candidate cell configuration;

[0326] The LTM candidate cell configuration is used to configure LTM candidate cells for a terminal device. The LTM candidate cell configuration includes the configuration of LTM candidate cells and / or the configuration of candidate cells for a cell group to perform LTM.

[0327] In some embodiments, the LTM candidate cell configuration includes K LTM candidate cells, where K is an integer greater than 0. At least one cell among the K LTM candidate cells is a current serving cell of the terminal device.

[0328] Exemplarily, the LTM candidate cell configuration includes three LTM candidate cells, whose candidate indexes are C0, C1, and C2, respectively. The terminal device's current serving cells include cell 0 (PCell), cell 1 (SCell), and cell 3 (SCell). Among them, the LTM candidate cell with candidate index C2 is cell 1.

[0329] Step 1620: Determine whether the first cell exists;

[0330] Please refer to the relevant content in step 1520.

[0331] Step 1630: The RRC layer sends a first message to the MAC layer and / or the PHY layer;

[0332] Please refer to the relevant content in step 1530.

[0333] Step 1640: When the state of the first cell is a deactivated state or a dormant state, perform the second operation.

[0334] The first cell is a secondary cell in the serving cell of the terminal device that is configured as an LTM candidate cell.

[0335] The second operation includes at least one of a measurement operation, an LTM switching operation, and an early uplink synchronization operation.

[0336] In some embodiments, the second operation includes at least one of the following:

[0337] Perform CSI measurement on the first cell;

[0338] In some embodiments, CSI measurement is performed on the first cell based on a first measurement configuration, wherein the first measurement configuration includes at least one of a reference signal configuration, a measurement period configuration, a measurement gap configuration, a CSI reporting content configuration, a CSI reporting condition, and a CSI reporting trigger event.

[0339] Report the CSI report of the first cell;

[0340] The CSI report of the first cell is carried through a control channel of the PCell / PSCell, or a control channel of an activated SCell, or a control channel of the first cell, wherein the control channel includes a PUCCH or a PUSCH.

[0341] Initiate random access to the first cell, and / or send a preamble, and / or send an SRS;

[0342] In some embodiments, based on the fifth indication information, random access is initiated to the first cell, and / or a preamble is sent, and / or an SRS is sent. The fifth indication information includes a candidate index, and / or a secondary cell index, and / or a contention-free random access (CFRA) resource. The CFRA resource includes at least one of a preamble index, a random access opportunity mask (RACH Occasion Mask, RO Mask), and a synchronization signal block index (SSB Index).

[0343] In some embodiments, the fifth indication information is scheduled via the PCell / PSCell, and / or the activated SCell, and / or the PDCCH on the first cell.

[0344] The RACH resource configuration and / or the SRS configuration are included in the LTM candidate cell configuration, or the RACH resource configuration and / or the SRS configuration are included in the configuration of the first cell.

[0345] In some embodiments, after receiving the LTM candidate cell configuration, the terminal device sends the LTM candidate cell RACH resource configuration to the MAC layer; optionally, the LTM candidate cell configuration includes fourth indication information, and the fourth indication information is used to indicate whether to support initiating early uplink synchronization to the LTM candidate cell. For example, if the LTM candidate cell configuration includes the fourth indication information, the RRC layer of the terminal device sends the RACH resource configuration of the LTM candidate cell to the MAC layer of the terminal device; if the LTM candidate cell configuration does not include the fourth indication information, the RRC layer of the terminal device does not send the RACH resource configuration of the LTM candidate cell to the MAC layer of the terminal device.

[0346] Monitor PDCCH and / or LTM handover information;

[0347] Monitor the PDCCH scheduled by the first cell, and / or monitor the PDCCH of other serving cells scheduling the first cell, wherein the other serving cells are cells other than the first cell among the serving cells of the terminal device.

[0348] The LTM switching information is used to instruct execution of LTM switching.

[0349] Support uplink transmission on the uplink channel and / or SRS resources and / or RACH of the first cell;

[0350] The uplink channels include: an uplink shared channel (UL-SCH) and / or a PUCCH.

[0351] In some embodiments, when the state of the first cell is a deactivated state or a dormant state, the second operation is performed.

[0352] In some embodiments, when a second condition is met, the first cell enters a deactivated state or a dormant state. The second condition includes at least one of the following:

[0353] receiving first indication information, where the first indication information is used to instruct deactivation of the first cell;

[0354] The secondary cell deactivation timer corresponding to the first cell times out;

[0355] · Receiving second indication information, where the second indication information is used to instruct the first cell to switch to a dormant BWP.

[0356] In some embodiments, the second operation is performed during the timing of a first timer. The first timer is started autonomously by the terminal device, triggered by a network device, or started by the terminal device based on a predefined communication protocol. The first timer is stopped autonomously by the terminal device, triggered by a network device, or stopped by the terminal device based on a predefined communication protocol.

[0357] In some embodiments, the working method of the first timer includes at least one of the following:

[0358] When the first cell enters a deactivated state or a dormant state, starting a first timer;

[0359] Periodically starting a first timer;

[0360] Semi-periodically start the first timer;

[0361] When the first cell enters the activated state, stop the first timer;

[0362] When the first cell enters a non-dormant state, stopping the first timer;

[0363] When the first cell is released (or deleted), stop the first timer;

[0364] When the LTM switching instruction is received, the first timer is stopped.

[0365] The period value is determined autonomously by the terminal device, or by the network device, or predefined by the communication protocol.

[0366] In some embodiments, when the first cell is in a dormant state, the first cell switches to a non-dormant BWP during a first timer; and / or, when the first timer expires, the first cell switches to the dormant BWP.

[0367] To sum up, the method provided in the present application is that the terminal device performs the second operation based on the status of the service cell, and through the interaction between the RRC layer, MAC layer / PHY layer of the terminal device, or between the network device and the terminal device, supports the first cell to perform all or part of the activation state behavior as much as possible, provides measurement results to the network device, performs early uplink synchronization and other related operations.

[0368] FIG15 is a flow chart illustrating an operation execution method provided in some exemplary embodiments of the present application. The method is applicable to CA scenarios and / or DC scenarios. The method is executed by the terminal device shown in FIG4 . The method includes at least some of the following steps:

[0369] Step 1710: Receive LTM candidate cell configuration;

[0370] The LTM candidate cell configuration is used to configure LTM candidate cells for a terminal device. The LTM candidate cell configuration includes the configuration of LTM candidate cells and / or the configuration of candidate cells for a cell group to perform LTM.

[0371] In some embodiments, the serving cell of the terminal device includes an MCG and an SCG, and the LTM candidate cell configuration includes a candidate cell configuration for the MCG and / or SCG to perform LTM.

[0372] Step 1720: Determine whether the first cell exists;

[0373] Please refer to the relevant content in step 1520.

[0374] Step 1730: The RRC layer sends a first message to the MAC layer and / or the PHY layer;

[0375] Please refer to the relevant content in step 1530.

[0376] Step 1740: When the first cell group is in a deactivated state, perform the second operation.

[0377] The first cell group is a secondary cell group in the serving cell of the terminal device, and includes at least one cell. The LTM candidate cell configuration includes a candidate cell configuration for performing LTM on the first cell group.

[0378] The second operation includes at least one of a measurement operation, an LTM switching operation, and an early uplink synchronization operation.

[0379] In some embodiments, the second operation includes at least one of the following:

[0380] Perform CSI measurements on LTM candidate cells and / or PSCells;

[0381] In some embodiments, CSI measurement is performed on the LTM candidate cell based on a first measurement configuration, wherein the first measurement configuration includes at least one of a reference signal configuration, a measurement period configuration, a measurement gap configuration, a CSI reporting content configuration, a CSI reporting condition, and a CSI reporting trigger event.

[0382] Report CSI reports of LTM candidate cells and / or PSCells;

[0383] The CSI report of the LTM candidate cell and / or PSCell is carried by the control channel of the PSCell, wherein the control channel includes PUCCH or PUSCH.

[0384] Initiate random access to the LTM candidate cell, and / or send a preamble, and / or send an SRS;

[0385] In some embodiments, based on the fifth indication information, random access is initiated to the LTM candidate cell, and / or a preamble is sent, and / or an SRS is sent. The fifth indication information includes a cell index of the LTM candidate cell, and / or a secondary cell index, and / or a CFRA resource. The CFRA resource includes at least one of a preamble index, an RO mask, and an SSB index. The cell index of the LTM candidate cell includes a candidate index of the LTM candidate cell, and / or a PCI of the LTM candidate cell.

[0386] In some embodiments, the fifth indication information is scheduled via the PDCCH of the PSCell.

[0387] The RACH resource configuration and / or the SRS configuration are included in the LTM candidate cell configuration, or the RACH resource configuration and / or the SRS configuration are included in the LTM candidate cell configuration.

[0388] In some embodiments, after receiving the LTM candidate cell configuration, the terminal device sends the LTM candidate cell RACH resource configuration to the MAC layer; optionally, the LTM candidate cell configuration includes fourth indication information, and the fourth indication information is used to indicate whether to support initiating early uplink synchronization to the LTM candidate cell. For example, if the LTM candidate cell configuration includes the fourth indication information, the RRC layer of the SCG sends the RACH resource configuration of the LTM candidate cell to the MAC layer of the SCG; if the LTM candidate cell configuration does not include the fourth indication information, the RRC layer of the SCG does not send the RACH resource configuration of the LTM candidate cell to the MAC layer of the SCG.

[0389] Monitor PDCCH and / or LTM handover information;

[0390] Monitor the PDCCH scheduled by the PSCell and / or monitor the PDCCH scheduled by the PCell.

[0391] The LTM switching information is used to instruct execution of LTM switching.

[0392] Support uplink transmission on the uplink channel and / or SRS resources and / or RACH of the PSCell;

[0393] Uplink channels include: UL-SCH and / or PUCCH.

[0394] Sending the CSI report of the PSCell to the MN;

[0395] Send CSI reports of SCells in the SCG to the MN;

[0396] Send PCell CSI report to SN;

[0397] Send CSI reports of SCells in MCG to SN.

[0398] In some embodiments, the first cell group enters a deactivated state when a third condition is met, wherein the third condition includes: receiving third indication information, the third indication information being used to instruct deactivation of the first cell group.

[0399] In some embodiments, the second operation is performed during the timing of a second timer. The second timer is started autonomously by the terminal device, triggered by the network device, or started by the terminal device based on a predefined communication protocol. The second timer is stopped autonomously by the terminal device, triggered by the network device, or stopped by the terminal device based on a predefined communication protocol.

[0400] In some embodiments, the operating method of the second timer includes at least one of the following:

[0401] When the first cell group enters the deactivated state, starting a second timer;

[0402] Periodically start a second timer;

[0403] Semi-periodically start the second timer;

[0404] When the first cell group enters the activated state, stop the second timer;

[0405] When the first cell group is released (or deleted), the second timer is stopped.

[0406] The period value is determined autonomously by the terminal device, or by the network device, or predefined by the communication protocol.

[0407] To sum up, the method provided in the present application is that the terminal device performs the second operation based on the status of the SCG in the service cell, and through the interaction between the RRC layer, MAC layer / PHY layer of the SCG, or between the network device and the terminal device, supports the first cell group to perform all or part of the activation state behavior as much as possible, provides measurement results to the network device, performs early uplink synchronization and other related operations.

[0408] FIG16 is a flow chart illustrating a method for executing operations provided by some exemplary embodiments of the present application. The method is applicable to CA scenarios and / or DC scenarios. The method is executed by the terminal device shown in FIG4 . The method includes at least some of the following steps:

[0409] Step 1810: Receive LTM candidate cell configuration;

[0410] The LTM candidate cell configuration is used to configure LTM candidate cells for a terminal device. The LTM candidate cell configuration includes the configuration of LTM candidate cells and / or the configuration of candidate cells for a cell group to perform LTM.

[0411] In some embodiments, the serving cell of the terminal device includes an MCG and an SCG, and the LTM candidate cell configuration includes a candidate cell configuration for the MCG and / or SCG to perform LTM, or a candidate cell configuration for the PCell and / or PSCell to perform LTM.

[0412] In some embodiments, after receiving the LTM candidate cell configuration, the RRC layer sends a first message to the MAC layer.

[0413] The first message includes the cell index of the first cell and / or the cell index of the LTM candidate cell.

[0414] The cell index of the first cell includes at least one of a secondary cell index of the first cell, a candidate index of the first cell, and a PCI of the first cell.

[0415] The cell index of the LTM candidate cell includes the candidate index of the LTM candidate cell and / or the PCI of the LTM candidate cell. The candidate index of the LTM candidate cell includes the candidate indexes of all LTM candidate cells in the LTM candidate cell configuration; or the candidate index of the LTM candidate cell that is the serving cell of the terminal device in the LTM candidate cell configuration.

[0416] Step 1820: Receive sixth indication information;

[0417] The sixth indication information is used to instruct the MCG / SCG to perform LTM, or to instruct the MCG / SCG to initiate random access to the LTM candidate cell, or to instruct the MCG / SCG to send a preamble to the LTM candidate cell, or to instruct the MCG / SCG to send an SRS to the LTM candidate cell. The sixth indication information includes a cell group index (CG index), and / or a cell index of the LTM candidate cell, and / or a CFRA resource.

[0418] Step 1830: forwarding the sixth instruction information;

[0419] When the cell group receiving the sixth indication information is different from the cell group indicated by the sixth indication information, or when the node receiving the sixth indication information is different from the node indicated by the sixth indication information, the terminal device forwards the sixth indication information to the node or cell group indicated by the sixth indication information.

[0420] If the MCG receives the sixth indication information, and the sixth indication information is used to instruct the SCG to execute LTM, then the terminal device sends the sixth indication information to the MAC layer / PHY layer of the SCG. Optionally, the sixth indication information also includes SCG status information. For example, the SCG status information is used to indicate whether the SCG is in an activated state or a deactivated state after completing the LTM switching.

[0421] In some embodiments, SCG status information is included in the LTM candidate cell configuration.

[0422] If the MN receives the sixth indication information, and the sixth indication information is used to instruct the SN to execute LTM, then the terminal device sends the sixth indication information to the MAC layer / PHY layer of the SN. Optionally, the sixth indication information also includes SCG status information. For example, the SCG status information is used to indicate whether the SCG is in an activated state or a deactivated state after the LTM handover is completed.

[0423] In some embodiments, the protocol layer of the MCG / MN delivers the sixth indication information to the protocol layer of the SCG / SN via the first interface. The first interface is a communication interface between a MAC entity used for MN communication and a MAC entity used for SN communication.

[0424] In some embodiments, the MCG / MN submits the sixth indication information to the RRC layer, and the RRC layer forwards the sixth indication information to the MAC layer / PHY layer.

[0425] If the SCG receives the sixth indication information, and the sixth indication information is used to instruct the MCG to execute LTM, then the terminal device sends the sixth indication information to the MAC layer / PHY layer.

[0426] If the SN receives the sixth indication information, and the sixth indication information is used to instruct the MN to execute LTM, then the terminal device sends the sixth indication information to the MAC layer / PHY layer of the MN.

[0427] In some embodiments, the protocol layer of the SCG / SN delivers the sixth indication information to the protocol layer of the MCG / MN via a first interface. The first interface is an interface between corresponding protocol layers between the MN and the SN, or an interface between corresponding protocol layers between the MCG and the SCG.

[0428] In some embodiments, the SCG / SN submits the sixth indication information to the RRC layer, and the RRC layer forwards the sixth indication information to the MAC layer / PHY layer of the MCG / MN.

[0429] Step 1840: Perform LTM handover, and / or initiate random access to the LTM candidate cell, and / or send a preamble to the LTM candidate cell, and / or send an SRS to the LTM candidate cell;

[0430] When the cell group receiving the sixth indication information is the same as the cell group indicated by the sixth indication information, or when the node receiving the sixth indication information is the same as the node indicated by the sixth indication information, the terminal device performs LTM switching, and / or initiates random access to the LTM candidate cell, and / or sends a preamble code to the LTM candidate cell, and / or sends SRS to the LTM candidate cell.

[0431] If the MCG / MN receives the sixth indication information, and the sixth indication information is used to instruct the MCG / MN to perform LTM, then the terminal device performs LTM switching, and / or initiates random access to the LTM candidate cell, and / or sends a preamble code to the LTM candidate cell, and / or sends an SRS to the LTM candidate cell.

[0432] If the SCG / SN receives the sixth indication information, and the sixth indication information is used to instruct the SCG / SN to perform LTM, then the terminal device sends the sixth indication information to the MAC layer / PHY layer of the MCG. Optionally, the sixth indication information also includes SCG status information. For example, the SCG status information is used to indicate whether the SCG is in an activated state or a deactivated state after completing the LTM switching.

[0433] In some embodiments, SCG status information is included in the LTM candidate cell configuration.

[0434] Step 1850: Send CSI report;

[0435] When the SCG is in a deactivated state, or a radio link failure (RLF) occurs in the SCG, or the SCG cannot receive underlying signaling through the PSCell, the SCG sends a CSI report to the MCG through underlying signaling and / or underlying resources of the SCG, wherein the CSI report includes a CG index.

[0436] When the SCG is in a deactivated state, or an RLF occurs in the SCG, or the SCG cannot receive underlying signaling through the PSCell, the MCG is scheduled through the underlying signaling and / or underlying resources of the SCG, and the underlying signaling of the MCG is used to schedule the SCG.

[0437] Among them, the bottom layer of CG refers to the MAC layer and / or PHY layer of the CG.

[0438] In summary, the method provided by this application supports scheduling the SCG through the underlying resources and / or underlying signaling of the SCG to schedule the underlying signaling of the MCG. In the event of an SCG failure or inability to transmit underlying signaling, the SCG can still be scheduled to provide measurement results to network equipment, perform early uplink synchronization, and other related operations. This method implements the cross-cell group transmission of LTM switching information, the cross-cell group reporting of CSI reports, and the cross-cell group triggering of terminal devices to initiate random access, greatly improving the robustness of the operation execution method.

[0439] FIG17 is a flow chart illustrating a method for executing operations provided by some exemplary embodiments of the present application. The method is applicable to CA scenarios and / or DC scenarios. The method is executed by the network device (e.g., MN) shown in FIG4 . The method includes at least some of the following steps:

[0440] Step 1910: Send LTM candidate cell configuration;

[0441] The LTM candidate cell configuration is used to configure LTM candidate cells for a terminal device. The LTM candidate cell configuration includes the configuration of LTM candidate cells and / or the configuration of candidate cells for a cell group to perform LTM.

[0442] In some embodiments, the LTM candidate cell configuration includes K LTM candidate cells, where K is an integer greater than 0. At least one cell among the K LTM candidate cells is a current serving cell of the terminal device.

[0443] In some embodiments, the serving cell of the terminal device includes an MCG and an SCG, and the LTM candidate cell configuration includes a candidate cell configuration for the MCG and / or SCG to perform LTM.

[0444] Step 1920: Execute a third operation related to the terminal device;

[0445] The third operation is an operation related to the serving cell of the terminal device. That is, the third operation can be sending information related to the serving cell, receiving information related to the serving cell, or performing at least one of the following operations: measuring, reporting measurement results, uplink synchronization, monitoring, transmitting, switching cells, switching BWP, switching cell status, etc., related to the serving cell.

[0446] The third operation includes receiving a notification message and / or sending indication information to the terminal device.

[0447] In some embodiments, step 1920 may be implemented as step 1920a and / or step 1920b.

[0448] Step 1920a: Receive a notification message sent by the terminal device;

[0449] The notification message is used to indicate the serving cell information related to the LTM candidate cell configuration.

[0450] In some embodiments, the notification message includes a first message including a cell index of the first cell;

[0451] The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell.

[0452] The cell index of the first cell includes at least one of the secondary cell index of the first cell, the candidate index of the first cell, and the PCI. The candidate index is an identifier corresponding to each LTM candidate cell and is indicated by the LTM candidate cell configuration. Optionally, the candidate index is a temporary identifier.

[0453] In some embodiments, the notification message includes a second message, the second message being used to indicate that there is an LTM candidate cell configuration for the first cell group to perform LTM, or that there is no LTM candidate cell configuration for the first cell group to perform LTM;

[0454] Among them, the first cell group is the secondary cell group in the serving cell.

[0455] In some embodiments, the third operation further includes at least one of the following:

[0456] Based on the notification message, keep the first cell in an activated state;

[0457] Based on the notification message, the first cell is not activated;

[0458] Based on the notification message, the first cell is not instructed to switch to the dormant BWP;

[0459] Determining, based on the notification message, that the terminal device desires to keep the first cell in an activated state;

[0460] Determining, based on the notification message, that the terminal device desires not to deactivate the first cell;

[0461] Based on the notification message, determining that the terminal device desires the first cell not to switch to a dormant BWP.

[0462] Step 1920b: Send instruction information to the terminal device.

[0463] Sending instruction information to the terminal device includes at least one of the following:

[0464] Sending first indication information to the terminal device, where the first indication information is used to instruct deactivation of the first cell;

[0465] Sending second indication information to the terminal device, where the second indication information is used to instruct the terminal device to switch to the dormant BWP;

[0466] Sending fourth indication information to the terminal device, where the fourth indication information is used to instruct deactivation of the first cell group.

[0467] Step 1930: Execute a fourth operation related to the terminal device;

[0468] The fourth operation is a behavior related to all or part of the behavior of the terminal device in the activated state; or, the fourth operation is a behavior related to the behavior of the terminal device in the activated state related to LTM; or, the second operation is a behavior related to LTM.

[0469] The fourth operation includes at least one of the following: a measurement operation; an LTM switching operation; and an early uplink synchronization operation.

[0470] The measurement operation includes at least one of the following:

[0471] Receive a CSI report for the first cell;

[0472] Receive CSI reports from SCG;

[0473] Receive CSI reports from LTM candidate cells;

[0474] Receive CSI reports from SCells in the SCG;

[0475] Receive CSI reports from PSCells in the SCG;

[0476] · Receiving uplink transmission on the SRS resources of the first cell.

[0477] The LTM switching operation includes at least one of the following:

[0478] Send LTM switch information, which is used to instruct the execution of LTM switch;

[0479] Transmitting the PDCCH via the primary cell;

[0480] Transmitting the PDCCH of the first cell through other serving cells.

[0481] The early uplink synchronization operation includes at least one of the following:

[0482] Initiate random access to the first cell;

[0483] Sending a preamble to the first cell;

[0484] Receiving uplink transmission on an uplink channel of the first cell;

[0485] · Receive uplink transmission on the RACH of the first cell.

[0486] In some embodiments, the MN sends information to the MCG for instructing the MCG to perform LTM switching; and / or sends information to the MCG for instructing the SCG to perform LTM switching.

[0487] In some embodiments, the RRC layer of the MCG receives information for instructing the MCG to perform LTM handover;

[0488] The RRC layer of the MCG sends the information for instructing the MCG to perform LTM switching to the MAC layer of the MCG.

[0489] In some embodiments, the MN receives the LTM candidate cell configuration sent by the SN; or receives information for generating the LTM candidate cell configuration sent by the SN.

[0490] In some embodiments, the PCI of the LTM candidate cell includes at least one of the following:

[0491] PCI of the LTM candidate cell;

[0492] PCI of the primary cell among the LTM candidate cells;

[0493] PCI of the primary and secondary cells in the LTM candidate cells.

[0494] In summary, the method provided by this application supports the MN taking into account the LTM candidate cell configuration and the serving cell status of the terminal device when performing operations on the terminal device, enabling the terminal device to operate more reasonably and efficiently in the communication system. It also supports the SN and MN performing operations on the terminal device across cell groups, improving the robustness of the operation execution method. Even if a cell group fails or cannot transmit underlying signaling, the operation on the terminal device should not be performed.

[0495] It also takes into account the different operations performed by the terminal device under different LTM candidate cell configurations. If the LTM candidate cell configuration includes the configuration of the first cell, the first cell will not be deactivated / slept, or even if the first cell is deactivated / slept, the terminal device can provide measurement results, perform early uplink synchronization and other related operations. If the LTM candidate cell configuration includes the candidate cell configuration for the SCG to perform LTM, the first cell group will not be deactivated, or even if the first cell group is deactivated / slept, the terminal device can provide measurement results, perform early uplink synchronization and other related operations.

[0496] FIG18 is a flow chart illustrating a method for executing operations provided by some exemplary embodiments of the present application. The method is applicable to CA scenarios and / or DC scenarios. The method is executed by the network device (e.g., SN) shown in FIG4 . The method includes at least some of the following steps:

[0497] Step 2010: Send LTM candidate cell configuration;

[0498] The LTM candidate cell configuration is used to configure LTM candidate cells for a terminal device. The LTM candidate cell configuration includes the configuration of LTM candidate cells and / or the configuration of candidate cells for a cell group to perform LTM.

[0499] In some embodiments, the LTM candidate cell configuration includes K LTM candidate cells, where K is an integer greater than 0. At least one cell among the K LTM candidate cells is a current serving cell of the terminal device.

[0500] In some embodiments, the serving cell of the terminal device includes an MCG and an SCG, and the LTM candidate cell configuration includes a candidate cell configuration for the MCG and / or SCG to perform LTM.

[0501] Step 2020: Execute a fifth operation related to the terminal device;

[0502] The fifth operation is an operation related to the serving cell of the terminal device. That is, the fifth operation can be sending information related to the serving cell, receiving information related to the serving cell, or performing at least one of the following operations: measuring, reporting measurement results, uplink synchronization, monitoring, transmitting, switching cells, switching BWP, switching cell status, etc., related to the serving cell.

[0503] The fifth operation includes receiving a notification message and / or sending indication information to the terminal device.

[0504] In some embodiments, step 2020 may be implemented as step 2020a and / or step 2020b.

[0505] Step 2020a: Receive a notification message sent by the terminal device;

[0506] The notification message is used to indicate the serving cell information related to the LTM candidate cell configuration.

[0507] In some embodiments, the notification message includes a first message including a cell index of the first cell;

[0508] The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell.

[0509] The cell index of the first cell includes at least one of the secondary cell index of the first cell, the candidate index of the first cell, and the PCI. The candidate index is an identifier corresponding to each LTM candidate cell and is indicated by the LTM candidate cell configuration. Optionally, the candidate index is a temporary identifier.

[0510] In some embodiments, the notification message includes a second message, the second message being used to indicate that there is an LTM candidate cell configuration for the first cell group to perform LTM, or that there is no LTM candidate cell configuration for the first cell group to perform LTM;

[0511] Among them, the first cell group is the secondary cell group in the serving cell.

[0512] In some embodiments, the third operation further includes at least one of the following:

[0513] Keep the secondary cell group active based on the notification message;

[0514] Based on the notification message, the secondary cell group is not activated;

[0515] Determining, based on the notification message, that the terminal device desires to keep the secondary cell group in an activated state;

[0516] Based on the notification message, it is determined that the terminal device desires not to deactivate the secondary cell group.

[0517] Step 2020b: Send instruction information to the terminal device.

[0518] Sending instruction information to the terminal device includes at least one of the following:

[0519] Sending first indication information to the terminal device, where the first indication information is used to instruct deactivation of the first cell;

[0520] Sending second indication information to the terminal device, where the second indication information is used to instruct the terminal device to switch to the dormant BWP;

[0521] Sending fourth indication information to the terminal device, where the fourth indication information is used to instruct deactivation of the first cell group.

[0522] Step 2030: Execute a sixth operation related to the terminal device;

[0523] The sixth operation is a behavior related to all or part of the behavior of the terminal device in the activated state; or, the sixth operation is a behavior related to the behavior of the terminal device in the activated state related to LTM; or, the second operation is a behavior related to LTM.

[0524] The sixth operation includes at least one of the following: a measurement operation; an LTM switching operation; and an early uplink synchronization operation.

[0525] The measurement operation includes at least one of the following:

[0526] Receive a CSI report for the first cell;

[0527] Receive CSI reports from MCG;

[0528] Receive CSI reports from LTM candidate cells;

[0529] Receive CSI reports from SCells in the SCG;

[0530] Receive CSI reports from PSCells in the SCG;

[0531] Receiving uplink transmissions on the SRS resources of the first cell;

[0532] · Receive uplink transmissions on the SRS resources of the PScell.

[0533] The LTM switching operation includes at least one of the following:

[0534] Send LTM switch information, which is used to instruct the execution of LTM switch;

[0535] Transmitting the PDCCH via the primary cell;

[0536] Transmitting the PDCCH of the first cell through other serving cells;

[0537] Transmitting PDCCH via PScell.

[0538] The early uplink synchronization operation includes at least one of the following:

[0539] Initiate random access to the first cell;

[0540] Sending a preamble to the first cell;

[0541] Receiving uplink transmission on an uplink channel of the first cell;

[0542] Receive uplink transmission on the RACH of the first cell;

[0543] Receive uplink transmissions on the PScell's uplink channel;

[0544] · Receive uplink transmissions on the RACH channel of the PScell.

[0545] In some embodiments, the SN sends information to the SCG for instructing the SCG to perform LTM switching; and / or sends information to the SCG for instructing the MCG to perform LTM switching.

[0546] In some embodiments, the RRC layer of the SCG receives information for instructing the SCG to perform LTM switching;

[0547] The RRC layer of the SCG sends the information for instructing the SCG to perform LTM switching to the MAC layer of the SCG.

[0548] In some embodiments, the SN sends the LTM candidate cell configuration to the MN; or, sends information for generating the LTM candidate cell configuration to the MN.

[0549] In some embodiments, the PCI of the LTM candidate cell includes at least one of the following:

[0550] PCI of the LTM candidate cell;

[0551] PCI of the primary cell among the LTM candidate cells;

[0552] PCI of the primary and secondary cells in the LTM candidate cells.

[0553] In summary, the method provided by this application supports the SN taking into account the LTM candidate cell configuration and the serving cell status of the terminal device when performing operations on the terminal device, enabling the terminal device to operate more reasonably and efficiently in the communication system. It also supports the SN and MN performing operations on the terminal device across cell groups, improving the robustness of the operation execution method. Even if a cell group fails or cannot transmit underlying signaling, the operation on the terminal device should not be performed.

[0554] It also takes into account the different operations performed by the terminal device under different LTM candidate cell configurations. If the LTM candidate cell configuration includes the configuration of the first cell, the first cell will not be deactivated / slept, or even if the first cell is deactivated / slept, the terminal device can provide measurement results, perform early uplink synchronization and other related operations. If the LTM candidate cell configuration includes the candidate cell configuration for the SCG to perform LTM, the first cell group will not be deactivated, or even if the first cell group is deactivated / slept, the terminal device can provide measurement results, perform early uplink synchronization and other related operations.

[0555] FIG19 shows a block diagram of an operation execution device provided in some exemplary embodiments of the present application. The device is applicable to CA scenarios and / or DC scenarios. The device includes at least some of the following modules: a first receiving module 2110, a first processing module 2120, a first sending module 2122, and a first determining module 2130:

[0556] A first receiving module 2110 is configured to receive an LTM candidate cell configuration, wherein the LTM candidate cell configuration is used to configure an LTM candidate cell to the apparatus;

[0557] The first processing module 2120 is configured to perform a first operation based on the LTM candidate cell configuration and / or the status of the serving cell of the apparatus.

[0558] In some embodiments, the first processing module 2120 is configured to send a notification message based on the LTM candidate cell configuration, and / or not start a secondary cell deactivation timer of the first cell;

[0559] The notification message is used to indicate serving cell information related to the LTM candidate cell configuration, the first cell is determined based on the LTM candidate cell configuration, and the first cell is a secondary cell in the serving cell configured as the LTM candidate cell.

[0560] In some embodiments, the notification message includes a first message including a cell index of the first cell.

[0561] In some embodiments, the apparatus further includes a first sending module 2122 configured to send the first message to a network device, and / or send the first message to a MAC layer, and / or send the first message to a PHY layer.

[0562] In some embodiments, the notification message includes a second message, which is used to indicate that there is an LTM candidate cell configuration for the first cell group to perform LTM, or that there is no LTM candidate cell configuration for the first cell group to perform LTM; wherein, the first cell group is determined based on the LTM candidate cell configuration, and the first cell group is a secondary cell group in the service cell.

[0563] In some embodiments, the first sending module 2122 is configured to send the second message to a network device, or to send the second message to a master node MN.

[0564] In some embodiments, the first sending module 2122 is configured to send the notification message if a first condition is met;

[0565] The first condition includes at least one of the following:

[0566] The device receives an LTM candidate cell configuration, and the first cell exists in the serving cell;

[0567] The device completes the LTM process, and the first cell exists in the serving cell;

[0568] The device receives first indication information, where the first indication information is used to instruct deactivation of the first cell;

[0569] The device receives second indication information, where the second indication information is used to instruct the first cell to switch to a dormant BWP;

[0570] The apparatus receives an LTM candidate cell configuration for performing LTM on the first cell group.

[0571] In some embodiments, the first processing module 2120 is configured to perform a second operation based on the status of the serving cell.

[0572] In some embodiments, the second operation is all or part of the operation of the device in the activated state; or, the second operation is an operation of the device in the activated state related to LTM; or, the second operation is an operation related to LTM.

[0573] In some embodiments, the LTM candidate cell includes a first cell, which is a secondary cell in the serving cell configured as the LTM candidate cell; the first processing module 2120 is used to perform the second operation when the state of the first cell is a deactivated state or a dormant state.

[0574] In some embodiments, when a second condition is met, the first cell enters the deactivated state or the dormant state;

[0575] The second condition includes at least one of the following:

[0576] receiving first indication information, where the first indication information is used to instruct deactivation of the first cell;

[0577] A secondary cell deactivation timer corresponding to the first cell times out;

[0578] Second indication information is received, where the second indication information is used to instruct the first cell to switch to a dormant BWP.

[0579] In some embodiments, the second operation is performed during a first timer.

[0580] In some embodiments, the first processing module 2120 is configured to perform at least one of the following:

[0581] When the first cell enters a deactivated state or a dormant state, start the first timer; start the first timer periodically; start the first timer semi-periodically; when the first cell enters an activated state, stop the first timer; when the first cell enters a non-dormant state, stop the first timer; when the first cell is released, stop the first timer; when an LTM switching indication is received, stop the first timer.

[0582] In some embodiments, the first processing module 2120 is configured to, when the first cell is in a dormant state, switch the first cell to a non-dormant BWP during the timing of the first timer;

[0583] When the first timer times out, the first cell switches to a dormant BWP.

[0584] In some embodiments, the LTM candidate cell configuration includes a candidate cell configuration for performing LTM on a first cell group, where the first cell group is a secondary cell group in the serving cell;

[0585] The first processing module 2120 is configured to perform the second operation when the state of the first cell group is a deactivated state.

[0586] In some embodiments, when a third condition is met, the first cell group enters the deactivated state;

[0587] The third condition includes:

[0588] Fourth indication information is received, where the fourth indication information is used to indicate deactivation of the first cell group.

[0589] In some embodiments, the second operation is performed during a second timer.

[0590] In some embodiments, the first processing module 2120 is configured to perform at least one of the following:

[0591] When the first cell group enters the deactivated state, start the second timer; start the second timer periodically; start the second timer semi-periodically; when the first cell group enters the activated state, stop the second timer; when the first cell group is released, stop the second timer.

[0592] In some embodiments, the second operation includes at least one of the following: a measurement operation; an LTM switching operation; and an early uplink synchronization operation.

[0593] In some embodiments, the measuring operation includes at least one of the following:

[0594] Perform CSI measurement on the first cell; perform CSI measurement on the LTM candidate cell; report the CSI report of the first cell; report the CSI report of the LTM candidate cell; send SRS to the first cell; send CSI reports of the primary and secondary cells PSCell in the secondary cell group SCG to the master node MN; send CSI reports of the secondary cells SCell in the SCG to the MN; send CSI reports of the PCell in the MCG to the secondary node SN; send CSI reports of the SCell in the MCG to the SN; perform uplink transmission on the SRS resources of the first cell; perform uplink transmission on the SRS resources of the PScell.

[0595] In some embodiments, the LTM switching operation includes at least one of the following:

[0596] Monitor LTM switching information, where the LTM switching information is used to indicate the execution of LTM switching; monitor the PDCCH scheduled by the first cell; monitor the PDCCH of other serving cells scheduling the first cell; monitor the PDCCH scheduled by PScell; monitor the PDCCH scheduled by PCell; and execute LTM switching.

[0597] In some embodiments, the first processing module 2120 is configured to:

[0598] When the MCG receives information for instructing the MCG to perform the LTM switching, the MCG performs the LTM switching operation;

[0599] And / or, when the SCG receives information instructing the SCG to perform LTM switching, the LTM switching operation is performed in the SCG.

[0600] In some embodiments, the first sending module 2122 is configured to:

[0601] When the MCG receives the information for instructing the SCG to perform the LTM switching, the MCG sends the information for instructing the SCG to perform the LTM switching to the SCG;

[0602] And / or, when the SCG receives information for instructing the MCG to perform LTM switching, it sends the information for instructing the MCG to perform LTM switching to the MCG.

[0603] In some embodiments, the early uplink synchronization operation includes at least one of the following:

[0604] Initiate random access to the first cell; send a preamble to the first cell; perform uplink transmission on an uplink channel of the first cell; perform uplink transmission on a random access channel of the first cell; perform uplink transmission on an uplink channel of the PScell; perform uplink transmission on a random access channel of the PScell;

[0605] The other serving cells are cells other than the first cell among the serving cells of the device.

[0606] In some embodiments, the apparatus further includes a first determining module 2130 configured to determine the first cell based on the PCI;

[0607] The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell.

[0608] In some embodiments, the first determining module 2130 is configured to determine that the secondary cell is the first cell when the PCI of the LTM candidate cell in the LTM candidate configuration is the same as the PCI of the secondary cell in the serving cell of the apparatus.

[0609] In some embodiments, the first determining module 2130 is configured to, when the PCI of the LTM candidate cell is the same as the PCI of the secondary cell, determine, by the RRC layer, that the secondary cell is the first cell;

[0610] The RRC layer indicates the secondary cell index of the secondary cell to the MAC layer and / or the PHY layer.

[0611] In some embodiments, the first determining module 2130 is configured to, when the PCI of the LTM candidate cell is the same as the PCI of the secondary cell, determine, by the RRC layer, that the secondary cell is the first cell;

[0612] The RRC layer indicates the candidate index of the LTM candidate cell to the MAC layer and / or the PHY layer.

[0613] In some embodiments, the PCI of the LTM candidate cell includes at least one of the following:

[0614] The PCI of the LTM candidate cell; the PCI of the primary cell in the LTM candidate cell; the PCI of the primary and secondary cells in the LTM candidate cell.

[0615] In summary, the apparatus provided in this embodiment supports performing a first operation based on a received LTM candidate cell configuration and / or a serving cell status. This allows the apparatus to consider the LTM candidate cell configuration and cell status when performing operations related to the serving cell, thereby enabling more reasonable and efficient operation in the communication system.

[0616] Furthermore, different operations are performed under different LTM candidate cell configurations. If the LTM candidate cell configuration includes the configuration of the first cell, then the network device is supported not to deactivate / sleep the first cell, or, even if the first cell is deactivated / sleep, the apparatus can provide the network device with measurement results, perform early uplink synchronization, and other related operations. If the LTM candidate cell configuration includes a candidate cell configuration for performing LTM on a secondary cell group, then the network device is supported not to deactivate the first cell group, or, even if the first cell group is deactivated / sleep, the apparatus can provide the network device with measurement results, perform early uplink synchronization, and other related operations.

[0617] FIG20 shows a block diagram of an operation execution device provided in some exemplary embodiments of the present application. The device is applicable to CA scenarios and / or DC scenarios. The device includes at least some of the following modules: a second sending module 2210, a second processing module 2220, and a second receiving module 2222.

[0618] A second sending module 2210 is configured to send an LTM candidate cell configuration, where the LTM candidate cell configuration is used to configure an LTM candidate cell to a terminal device;

[0619] The second processing module 2220 is configured to execute a third operation related to the terminal device.

[0620] In some embodiments, the apparatus further includes a second receiving module 2222 for receiving a notification message sent by the terminal device, where the notification message is used to indicate information about the serving cell related to the LTM candidate cell configuration.

[0621] In some embodiments, the notification message includes a first message, the first message including a cell index of the first cell;

[0622] The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell.

[0623] In some embodiments, the notification message includes a second message, wherein the second message is used to indicate that there is an LTM candidate cell configuration for the first cell group to perform LTM, or that there is no LTM candidate cell configuration for the first cell group to perform LTM;

[0624] The first cell group is a secondary cell group in the serving cell.

[0625] In some embodiments, the third operation also includes at least one of the following: based on the notification message, keeping the first cell in an activated state; based on the notification message, not deactivating the first cell; based on the notification message, not instructing the first cell to switch to a dormant BWP; based on the notification message, determining that the terminal device expects to keep the first cell in an activated state; based on the notification message, determining that the terminal device expects not to deactivate the first cell; based on the notification message, determining that the terminal device expects the first cell not to switch to a dormant BWP; wherein, the first cell is a secondary cell in the service cell configured as the LTM candidate cell.

[0626] In some embodiments, the second sending module 2210 is configured to perform at least one of the following:

[0627] Sending first indication information to the terminal device, where the first indication information is used to instruct deactivation of the first cell;

[0628] Sending second indication information to the terminal device, where the second indication information is used to instruct the terminal device to switch to a dormant BWP;

[0629] Sending fourth indication information to the terminal device, where the fourth indication information is used to instruct deactivation of the first cell group;

[0630] The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell, and the first cell group is a secondary cell group in the serving cell.

[0631] In some embodiments, the second processing module 2220 is used to perform a fourth operation related to the terminal device.

[0632] In some embodiments, the fourth operation includes at least one of the following: a measurement operation; an LTM switching operation; and an early uplink synchronization operation.

[0633] In some embodiments, the measurement operation includes at least one of the following: receiving a CSI report of the first cell; receiving a CSI report of the SCG; receiving a CSI report of the LTM candidate cell; receiving a CSI report of the SCell in the SCG; receiving a CSI report of the PSCell in the SCG; receiving an uplink transmission on an SRS resource of the first cell;

[0634] The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell.

[0635] In some embodiments, the LTM switching operation includes at least one of the following: sending LTM switching information, where the LTM switching information is used to indicate the execution of LTM switching; transmitting PDCCH through the first cell; and transmitting the PDCCH of the first cell through other serving cells.

[0636] In some embodiments, the second sending module 2210 is used to: send information to the MCG for instructing the MCG to perform LTM switching; and / or send information to the MCG for instructing the SCG to perform LTM switching.

[0637] In some embodiments, the second receiving module 2222 is used for the RRC layer of the MCG to receive information for instructing the MCG to perform LTM switching;

[0638] The second sending module 2210 is used for the RRC layer to send the information for instructing the MCG to perform LTM switching to the MAC layer of the MCG.

[0639] In some embodiments, the early uplink synchronization operation includes at least one of the following:

[0640] Initiating random access to a first cell; sending a preamble to the first cell; receiving an uplink transmission on an uplink channel of the first cell; receiving an uplink transmission on a random access channel of the first cell;

[0641] The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell, and the other serving cells are cells in the serving cell other than the first cell.

[0642] In some embodiments, the second receiving module 2222 is configured to: receive the LTM candidate cell configuration sent by the secondary node SN; or receive information for generating the LTM candidate cell configuration sent by the secondary node SN.

[0643] In some embodiments, the PCI of the LTM candidate cell includes at least one of the following:

[0644] The PCI of the LTM candidate cell; the PCI of the primary cell in the LTM candidate cell; the PCI of the primary and secondary cells in the LTM candidate cell.

[0645] In summary, the apparatus provided by this application supports taking into account the LTM candidate cell configuration and the serving cell status of the terminal device when performing operations on the terminal device, enabling the terminal device to operate more reasonably and efficiently in the communication system. It also supports performing operations on the terminal device across SN cell groups, improving the robustness of the operation execution method. Even if a cell group fails or fails to transmit underlying signaling, the operation on the terminal device should not be performed.

[0646] It also takes into account the different operations performed by the terminal device under different LTM candidate cell configurations. If the LTM candidate cell configuration includes the configuration of the first cell, the first cell will not be deactivated / slept, or even if the first cell is deactivated / slept, the terminal device can provide measurement results, perform early uplink synchronization and other related operations. If the LTM candidate cell configuration includes the candidate cell configuration for the SCG to perform LTM, the first cell group will not be deactivated, or even if the first cell group is deactivated / slept, the terminal device can provide measurement results, perform early uplink synchronization and other related operations.

[0647] FIG21 shows a block diagram of an operation execution device provided in some exemplary embodiments of the present application. The device is applicable to CA scenarios and / or DC scenarios. The device includes at least some of the following modules: a third sending module 2310, a third processing module 2320, and a third receiving module 2322:

[0648] The third sending module 2310 is configured to send an LTM candidate cell configuration, where the LTM candidate cell configuration is used to configure an LTM candidate cell to a terminal device;

[0649] The third processing module 2320 is configured to execute a fifth operation related to the terminal device.

[0650] In some embodiments, the apparatus further includes a third receiving module 2322 for receiving a notification message sent by the terminal device, where the notification message is used to indicate information about the serving cell related to the LTM candidate cell configuration.

[0651] In some embodiments, the notification message includes a first message, the first message including a cell index of the first cell;

[0652] The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell.

[0653] In some embodiments, the notification message includes a second message, wherein the second message is used to indicate that there is an LTM candidate cell configuration for the first cell group to perform LTM, or that there is no LTM candidate cell configuration for the first cell group to perform LTM;

[0654] The first cell group is a secondary cell group in the serving cell.

[0655] In some embodiments, the fifth operation further includes at least one of the following:

[0656] Based on the notification message, the secondary cell group is kept in an activated state; based on the notification message, the secondary cell group is not deactivated; based on the notification message, it is determined that the terminal device expects to keep the secondary cell group in an activated state; based on the notification message, it is determined that the terminal device expects not to deactivate the secondary cell group.

[0657] In some embodiments, the third sending module 2310 is configured to perform at least one of the following:

[0658] Sending first indication information to the terminal device, where the first indication information is used to instruct deactivation of the first cell;

[0659] Sending second indication information to the terminal device, where the second indication information is used to instruct the terminal device to switch to a dormant BWP;

[0660] Sending fourth indication information to the terminal device, where the fourth indication information is used to instruct deactivation of the first cell group;

[0661] The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell, and the first cell group is a secondary cell group in the serving cell.

[0662] In some embodiments, the third processing module 2320 is used to perform a sixth operation related to the terminal device.

[0663] In some embodiments, the sixth operation includes at least one of the following: a measurement operation; an LTM switching operation; and an early uplink synchronization operation.

[0664] In some embodiments, the measuring operation includes at least one of the following:

[0665] Receive a CSI report from the first cell; receive a CSI report from the MCG; receive a CSI report from the LTM candidate cell; receive a CSI report from the SCell in the SCG; receive a CSI report from the PSCell in the SCG; receive an uplink transmission on the SRS resource of the first cell; receive an uplink transmission on the SRS resource of the PScell;

[0666] The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell.

[0667] In some embodiments, the LTM switching operation includes at least one of the following:

[0668] Sending LTM handover information, where the LTM handover information is used to instruct to perform LTM handover; transmitting a PDCCH through the first cell; transmitting the PDCCH of the first cell through other serving cells; and transmitting the PDCCH through the PScell.

[0669] In some embodiments, the third sending module 2310 is configured to:

[0670] Sending information to the SCG to instruct the SCG to perform LTM switching; and / or sending information to the SCG to instruct the MCG to perform LTM switching.

[0671] In some embodiments, the third receiving module 2322 is used for the RRC layer of the SCG to receive information for instructing the SCG to perform LTM switching;

[0672] The third sending module 2310 is used by the RRC layer to send the information for instructing the SCG to perform LTM switching to the MAC layer of the SCG.

[0673] In some embodiments, the early uplink synchronization operation includes at least one of the following: initiating random access to a first cell; sending a preamble to the first cell; receiving an uplink transmission on an uplink channel of the first cell; receiving an uplink transmission on a random access channel of the first cell; receiving an uplink transmission on an uplink channel of a PScell; receiving an uplink transmission on a random access channel of the PScell;

[0674] The first cell is a secondary cell in the service cell that is configured as the LTM candidate cell, and the other service cells are cells in the service cells of the terminal device except the first cell.

[0675] In some embodiments, the third sending module 2310 is configured to send the LTM candidate cell configuration to the MN; or, to send information used to generate the LTM candidate cell configuration to the MN.

[0676] In some embodiments, the PCI of the LTM candidate cell includes at least one of the following: the PCI of the LTM candidate cell; the PCI of the primary cell in the LTM candidate cell; and the PCI of the primary and secondary cells in the LTM candidate cell.

[0677] In summary, the apparatus provided by this application supports taking into account the LTM candidate cell configuration and the serving cell status of the terminal device when performing operations on the terminal device, enabling the terminal device to operate more reasonably and efficiently in the communication system. It also supports performing operations on the terminal device across cell groups with the MN, improving the robustness of the operation execution method. Even if a cell group fails or cannot transmit underlying signaling, the operation on the terminal device should not be performed.

[0678] It also takes into account the different operations performed by the terminal device under different LTM candidate cell configurations. If the LTM candidate cell configuration includes the configuration of the first cell, the first cell will not be deactivated / slept, or even if the first cell is deactivated / slept, the terminal device can provide measurement results, perform early uplink synchronization and other related operations. If the LTM candidate cell configuration includes the candidate cell configuration for the SCG to perform LTM, the first cell group will not be deactivated, or even if the first cell group is deactivated / slept, the terminal device can provide measurement results, perform early uplink synchronization and other related operations.

[0679] It should be noted that the device provided in the above embodiment is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0680] Regarding the device in this embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method and will not be elaborated here.

[0681] Figure 22 shows a structural diagram of a communication device (terminal device or MN or SN) provided in some exemplary embodiments of the present application. The communication device 2400 includes: a processor 2401, a receiver 2402, a transmitter 2403, a memory 2404 and a bus 2405.

[0682] The processor 2401 includes one or more processing cores. The processor 2401 executes various functional applications and information processing by running software programs and modules. In some embodiments, the processor 2401 can be used to implement the functions and steps of the first processing module 2120, and / or the second processing module 2220, and / or the third processing module 2320 described above.

[0683] The receiver 2402 and transmitter 2403 can be implemented as a communication component, which can be a communication chip. In some embodiments, the receiver 2402 can be used to implement the functions and steps of the first receiving module 2110 and / or the second receiving module 2222 and / or the third receiving module 2322 described above. In some embodiments, the transmitter 2403 can be used to implement the functions and steps of the first transmitting module 2122 and / or the second transmitting module 2210 and / or the third transmitting module 2310 described above.

[0684] The memory 2404 is connected to the processor 2401 via a bus 2405. The memory 2404 may be used to store at least one instruction, and the processor 2401 may be used to execute the at least one instruction to implement each step in the above method embodiment.

[0685] In addition, the memory 2404 can be implemented by any type of volatile or non-volatile storage device or a combination thereof. Volatile or non-volatile storage devices include but are not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random-access memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, and programmable read-only memory (PROM).

[0686] In some embodiments, the receiver 2402 receives signals / data independently, or the processor 2401 controls the receiver 2402 to receive signals / data, or the processor 2401 requests the receiver 2402 to receive signals / data, or the processor 2401 cooperates with the receiver 2402 to receive signals / data.

[0687] In some embodiments, the transmitter 2403 independently sends signals / data, or the processor 2401 controls the transmitter 2403 to send signals / data, or the processor 2401 requests the transmitter 2403 to send signals / data, or the processor 2401 cooperates with the transmitter 2403 to send signals / data.

[0688] In an exemplary embodiment of the present application, a computer-readable storage medium is also provided, in which at least one program is stored. The at least one program is loaded and executed by a processor, and the computer-readable storage medium is used to implement the operation execution method provided by the above-mentioned various method embodiments.

[0689] In an exemplary embodiment of the present application, a chip is also provided, which includes a programmable logic circuit and / or program instructions. When the chip runs on a communication device, it is used to implement the operation execution methods provided by the above-mentioned various method embodiments.

[0690] In an exemplary embodiment of the present application, a computer program product is further provided. When the computer program product is run on a processor of a communication device, the communication device is enabled to perform the above-mentioned operation execution method.

[0691] In an exemplary embodiment of the present application, a computer program is further provided. The computer program includes computer instructions. The processor of a communication device executes the computer instructions, so that the communication device performs the above-mentioned operation execution method.

[0692] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0693] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An operation execution method, characterized in that: The method is used in a carrier aggregation scenario and / or a dual connection scenario, and the method is executed by a terminal device, and the method includes: receiving an LTM candidate cell configuration, where the LTM candidate cell configuration is used to configure an LTM candidate cell for the terminal device; Based on the LTM candidate cell configuration and / or the state of the serving cell of the terminal device, a first operation is performed.

2. The method according to claim 1, characterized in that The performing a first operation based on the LTM candidate cell configuration and / or the state of the serving cell of the terminal device includes: Based on the LTM candidate cell configuration, sending a notification message, and / or not starting a secondary cell deactivation timer of the first cell; The notification message is used to indicate the serving cell information related to the LTM candidate cell configuration, the first cell is determined based on the LTM candidate cell configuration, and the first cell is a secondary cell in the serving cell configured as the LTM candidate cell.

3. The method according to claim 2, characterized in that The notification message includes a first message, and the first message includes a cell index of the first cell.

4. The method according to claim 3, characterized in that The sending of the notification message comprises: The first message is sent to a network device, and / or the first message is sent to a MAC layer, and / or the first message is sent to a PHY layer.

5. The method according to any one of claims 2 to 4, characterized in that: The notification message includes a second message, where the second message is used to indicate that there is an LTM candidate cell configuration for the first cell group to perform LTM, or there is no LTM candidate cell configuration for the first cell group to perform LTM; The first cell group is determined based on the LTM candidate cell configuration, and the first cell group is a secondary cell group in the serving cell.

6. The method according to claim 5, characterized in that The sending of the notification message comprises: Send the second message to the network device, or send the second message to the master node MN.

7. The method according to any one of claims 2 to 6, characterized in that: The sending of the notification message comprises: When the first condition is met, sending the notification message; The first condition includes at least one of the following: The terminal device receives the LTM candidate cell configuration, and the first cell exists in the serving cell; The terminal device completes the LTM process, and the first cell exists in the serving cell; The terminal device receives first indication information, where the first indication information is used to instruct deactivation of the first cell; The terminal device receives second indication information, where the second indication information is used to instruct the first cell to switch to a dormant BWP; The terminal device receives an LTM candidate cell configuration for performing LTM on the first cell group.

8. The method according to any one of claims 1 to 7, characterized in that: The performing a first operation based on the LTM candidate cell configuration and / or the state of the serving cell of the terminal device includes: Based on the state of the serving cell, a second operation is performed.

9. The method according to claim 8, characterized in that The second operation is all or part of the operations of the terminal device in the activated state; or, The second operation is an operation of the terminal device related to the LTM in the activated state; or, The second operation is an operation related to LTM.

10. The method according to claim 8 or 9, characterized in that: The LTM candidate cell includes a first cell, where the first cell is a secondary cell in the serving cell configured as the LTM candidate cell; The performing a second operation based on the state of the serving cell of the terminal device includes: When the state of the first cell is a deactivated state or a dormant state, the second operation is performed.

11. The method according to claim 10, characterized in that The method further comprises: When a second condition is met, the first cell enters the deactivated state or the dormant state; The second condition includes at least one of the following: receiving first indication information, where the first indication information is used to instruct deactivation of the first cell; The secondary cell deactivation timer corresponding to the first cell times out; Second indication information is received, where the second indication information is used to instruct the first cell to switch to a dormant BWP.

12. The method according to any one of claims 8 to 11, characterized in that: The second operation is performed during the counting of the first timer.

13. The method according to claim 12, characterized in that The method further comprises at least one of the following: When the first cell enters a deactivated state or a dormant state, starting the first timer; Periodically starting the first timer; semi-periodically starting the first timer; When the first cell enters an activated state, stopping the first timer; When the first cell enters a non-dormant state, stopping the first timer; When the first cell is released, stopping the first timer; When the LTM switching indication is received, the first timer is stopped.

14. The method according to claim 12 or 13, characterized in that The method further comprises at least one of the following: When the first cell is in a dormant state, the first cell switches to a non-dormant BWP during the timing of the first timer; When the first timer times out, the first cell switches to a dormant BWP.

15. The method according to claim 8 or 9, characterized in that: The LTM candidate cell configuration includes a candidate cell configuration for performing LTM on a first cell group, where the first cell group is a secondary cell group in the serving cell; The performing a second operation based on the state of the serving cell includes: When the state of the first cell group is a deactivated state, perform the second operation.

16. The method according to claim 15, characterized in that The method further comprises: When a third condition is met, the first cell group enters the deactivated state; Wherein, the third condition includes: A fourth indication information is received, where the fourth indication information is used to indicate deactivation of the first cell group.

17. The method according to claim 15 or 16, characterized in that The method further comprises: The second operation is performed during timing of a second timer.

18. The method according to claim 17, characterized in that The method further comprises at least one of the following: When the first cell group enters a deactivated state, starting the second timer; Periodically starting the second timer; semi-periodically starting the second timer; When the first cell group enters an activated state, stopping the second timer; When the first cell group is released, the second timer is stopped.

19. The method according to any one of claims 8 to 18, characterized in that: The second operation includes at least one of the following: Measurement operations; LTM switching operation; Perform upstream synchronization operations in advance.

20. The method according to claim 19, characterized in that The measuring operation includes at least one of the following: performing CSI measurement on the first cell; Performing CSI measurement on the LTM candidate cell; Reporting a CSI report of the first cell; Reporting the CSI report of the LTM candidate cell; Sending an SRS to the first cell; Sending a CSI report of the primary and secondary cells PSCell in the secondary cell group SCG to the master node MN; Sending a CSI report of the secondary cell SCell in the SCG to the MN; Sending a CSI report of the PCell in the MCG to the secondary node SN; Sending a CSI report of the SCell in the MCG to the SN; Performing uplink transmission on the SRS resources of the first cell; Perform uplink transmission on the SRS resource of the PScell.

21. The method according to claim 19 or 20, characterized in that The LTM switching operation includes at least one of the following: Monitoring LTM switching information, where the LTM switching information is used to instruct execution of LTM switching; Monitoring a PDCCH scheduled by the first cell; Monitoring a PDCCH of another serving cell scheduling the first cell; Monitor the PDCCH scheduled by PScell; Monitor the PDCCH scheduled by PCell; Perform an LTM switch.

22. The method according to claim 21, characterized in that The method further comprises: When the MCG receives information for instructing the MCG to perform the LTM switching, the MCG performs the LTM switching operation; and / or, when the SCG receives information for instructing the SCG to perform LTM switching, the SCG performs the LTM switching. operate; and / or, when the MCG receives information for instructing the SCG to perform LTM switching, sending the information for instructing the SCG to perform LTM switching to the SCG; And / or, when the SCG receives information for instructing the MCG to perform LTM switching, it sends the information for instructing the MCG to perform LTM switching to the MCG.

23. The method according to any one of claims 19 to 22, characterized in that: The advance uplink synchronization operation includes at least one of the following: Initiating random access to the first cell; Sending a preamble code to the first cell; Performing uplink transmission on an uplink channel of the first cell; Perform uplink transmission on a random access channel of the first cell; Perform uplink transmission on the uplink channel of the PScell; Perform uplink transmission on a random access channel of the PScell; The other service cells are cells in the service cells of the terminal device except the first cell.

24. The method according to any one of claims 1 to 23, characterized in that: After receiving the LTM candidate cell configuration, the method further includes: Determine a first cell based on the PCI; The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell.

25. The method according to claim 24, characterized in that The determining the first cell based on the PCI includes: When the PCI of the LTM candidate cell in the LTM candidate configuration is the same as the PCI of the secondary cell in the service cell of the terminal device, it is determined that the secondary cell is the first cell.

26. The method according to claim 25, characterized in that When the PCI of the LTM candidate cell in the LTM candidate configuration is the same as the PCI of the secondary cell in the serving cell of the terminal device, determining that the secondary cell is the first cell includes: When the PCI of the LTM candidate cell is the same as the PCI of the secondary cell, the RRC layer determines that the secondary cell is the first cell; The RRC layer indicates the secondary cell index of the secondary cell to the MAC layer and / or the PHY layer.

27. The method according to claim 24 or 25, characterized in that When the PCI of the LTM candidate cell in the LTM candidate cell configuration is the same as the PCI of the secondary cell in the serving cell of the terminal device, determining that the secondary cell is the first cell includes: When the PCI of the LTM candidate cell is the same as the PCI of the secondary cell, the RRC layer determines that the secondary cell is the first cell; The RRC layer indicates the candidate index of the LTM candidate cell to the MAC layer and / or the PHY layer.

28. The method according to any one of claims 25 to 27, characterized in that: The PCI of the LTM candidate cell includes at least one of the following: The PCI of the LTM candidate cell; The PCI of the primary cell in the LTM candidate cells; The PCI of the primary and secondary cells in the LTM candidate cells.

29. An operation execution method, characterized in that: The method is used in a carrier aggregation scenario and / or a dual connection scenario, and is executed by a master node MN. The method includes: Sending an LTM candidate cell configuration, where the LTM candidate cell configuration is used to configure the LTM candidate cell to the terminal device; A third operation related to the terminal device is performed.

30. The method according to claim 29, characterized in that The third operation includes: Receive a notification message sent by the terminal device, where the notification message is used to indicate information about the serving cell related to the LTM candidate cell configuration.

31. The method according to claim 30, characterized in that The notification message includes a first message, and the first message includes a cell index of a first cell; The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell.

32. The method according to claim 30 or 31, characterized in that The notification message includes a second message, where the second message is used to indicate that there is an LTM candidate cell configuration for the first cell group to perform LTM, or there is no LTM candidate cell configuration for the first cell group to perform LTM; The first cell group is a secondary cell group in the serving cell.

33. The method according to any one of claims 30 to 32, characterized in that: The third operation further includes at least one of the following: Based on the notification message, keep the first cell in an activated state; Based on the notification message, not deactivating the first cell; Based on the notification message, not instructing the first cell to switch to the dormant BWP; Based on the notification message, determining that the terminal device desires to keep the first cell in an activated state; Based on the notification message, determining that the terminal device desires not to deactivate the first cell; Based on the notification message, determining that the terminal device expects the first cell not to switch to a dormant BWP; The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell.

34. The method according to any one of claims 29 to 33, characterized in that: The third operation includes at least one of the following: Sending first indication information to the terminal device, where the first indication information is used to instruct deactivation of the first cell; Sending second indication information to the terminal device, where the second indication information is used to instruct the terminal device to switch to a dormant BWP; Sending fourth indication information to the terminal device, where the fourth indication information is used to instruct deactivation of the first cell group; The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell, and the first cell group is a secondary cell group in the serving cell.

35. The method according to any one of claims 29 to 34, characterized in that: After executing the third operation related to the terminal device, the method further includes: A fourth operation related to the terminal device is performed.

36. The method according to claim 35, characterized in that The fourth operation includes at least one of the following: Measurement operations; LTM switching operation; Perform upstream synchronization operations in advance.

37. The method according to claim 36, characterized in that The measuring operation includes at least one of the following: receiving a CSI report of a first cell; Receive CSI reports from SCG; Receiving a CSI report of the LTM candidate cell; Receive CSI report from SCell in SCG; Receive CSI report from PSCell in SCG; receiving an uplink transmission on the SRS resource of the first cell; The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell.

38. The method according to claim 36 or 37, characterized in that The LTM switching operation includes at least one of the following: Sending LTM switching information, where the LTM switching information is used to indicate execution of LTM switching; Transmitting the PDCCH via the first cell; The PDCCH of the first cell is transmitted through other serving cells.

39. The method according to claim 38, characterized in that The method further comprises: Sending information to the MCG for instructing the MCG to perform LTM switching; and / or, Information is sent to the MCG to instruct the SCG to perform LTM switching.

40. The method according to claim 39, characterized in that The method further comprises: The RRC layer of the MCG receives information for instructing the MCG to perform LTM switching; The RRC layer sends the information for instructing the MCG to perform LTM switching to the MAC layer of the MCG.

41. The method according to any one of claims 36 to 40, characterized in that The advance uplink synchronization operation includes at least one of the following: Initiating random access to the first cell; Sending a preamble code to the first cell; receiving an uplink transmission on an uplink channel of the first cell; receiving an uplink transmission on a random access channel of the first cell; The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell, and the other serving cells are cells in the serving cell except the first cell.

42. The method according to any one of claims 29 to 41, characterized in that Before sending the LTM candidate cell configuration, the method further includes: receiving the LTM candidate cell configuration sent by the secondary node SN; or, Receive information sent by the secondary node SN for generating the LTM candidate cell configuration.

43. The method according to any one of claims 29 to 42, characterized in that The PCI of the LTM candidate cell includes at least one of the following: The PCI of the LTM candidate cell; The PCI of the primary cell in the LTM candidate cells; The PCI of the primary and secondary cells in the LTM candidate cells.

44. An operation execution method, characterized in that: The method is used in a carrier aggregation scenario and / or a dual connectivity scenario, and is performed by a secondary node SN. The method includes: Sending an LTM candidate cell configuration, where the LTM candidate cell configuration is used to configure the LTM candidate cell to the terminal device; A fifth operation related to the terminal device is performed.

45. The method according to claim 44, characterized in that The fifth operation includes: receiving a notification message sent by the terminal device, wherein the notification message is used to indicate information of the serving cell related to the LTM candidate cell configuration; The notification message is sent to the master node MN.

46. ​​The method according to claim 45, characterized in that The notification message includes a first message, and the first message includes a cell index of a first cell; The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell.

47. The method according to claim 45 or 46, characterized in that The notification message includes a second message, where the second message is used to indicate that there is an LTM candidate cell configuration for the first cell group to perform LTM, or there is no LTM candidate cell configuration for the first cell group to perform LTM; The first cell group is a secondary cell group in the serving cell.

48. The method according to any one of claims 44 to 47, characterized in that The fifth operation further includes at least one of the following: Based on the notification message, keep the secondary cell group in an activated state; Based on the notification message, not deactivating the secondary cell group; Based on the notification message, determining that the terminal equipment desires to keep the secondary cell group in an activated state; Based on the notification message, it is determined that the terminal device desires not to deactivate the secondary cell group.

49. The method according to any one of claims 44 to 48, characterized in that The fifth operation includes at least one of the following: Sending first indication information to the terminal device, where the first indication information is used to instruct deactivation of the first cell; Sending second indication information to the terminal device, where the second indication information is used to instruct the terminal device to switch to a dormant BWP; Sending fourth indication information to the terminal device, where the fourth indication information is used to instruct deactivation of the first cell group; The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell, and the first cell group is a secondary cell group in the serving cell.

50. The method according to any one of claims 44 to 49, characterized in that After performing the fifth operation related to the terminal device, the method further includes: A sixth operation related to the terminal device is performed.

51. The method according to claim 50, characterized in that The sixth operation includes at least one of the following: Measurement operations; LTM switching operation; Perform upstream synchronization operations in advance.

52. The method according to claim 51, characterized in that The measuring operation includes at least one of the following: receiving a CSI report of a first cell; Receive CSI reports from MCG; Receiving a CSI report of the LTM candidate cell; Receive CSI report from SCell in SCG; Receive CSI report from PSCell in SCG; receiving an uplink transmission on the SRS resource of the first cell; Receiving uplink transmission on the SRS resource of the PScell; The first cell is a secondary cell in the serving cell that is configured as the LTM candidate cell.

53. The method according to claim 51 or 52, characterized in that The LTM switching operation includes at least one of the following: Sending LTM switching information, where the LTM switching information is used to indicate execution of LTM switching; Transmitting the PDCCH via the first cell; Transmitting the PDCCH of the first cell through other serving cells; The PDCCH is transmitted via the PScell.

54. The method according to claim 53, characterized in that The method further comprises: Sending information to the SCG for instructing the SCG to perform LTM switching; and / or, Information is sent to the SCG to instruct the MCG to perform LTM switching.

55. The method according to claim 53, characterized in that The method further comprises: The RRC layer of the SCG receives information for instructing the SCG to perform LTM switching; The RRC layer sends the information for instructing the SCG to perform LTM switching to the MAC layer of the SCG.

56. The method according to any one of claims 51 to 55, characterized in that The advance uplink synchronization operation includes at least one of the following: Initiating random access to the first cell; Sending a preamble code to the first cell; receiving an uplink transmission on an uplink channel of the first cell; receiving an uplink transmission on a random access channel of the first cell; receiving uplink transmissions on the uplink channel of the PScell; receiving an uplink transmission on a random access channel of the PScell; The first cell is a secondary cell in the service cell that is configured as the LTM candidate cell, and the other service cells are cells in the service cell of the terminal device except the first cell.

57. The method according to any one of claims 44 to 56, characterized in that The sending of the LTM candidate cell configuration includes: Sending the LTM candidate cell configuration to the master node MN; or, Sending information for generating the LTM candidate cell configuration to the master node MN.

58. The method according to any one of claims 44 to 56, characterized in that The PCI of the LTM candidate cell includes at least one of the following: The PCI of the LTM candidate cell; The PCI of the primary cell in the LTM candidate cells; The PCI of the primary and secondary cells in the LTM candidate cells.

59. An operation execution device, characterized in that: The device is used in a carrier aggregation scenario and / or a dual connection scenario, and the device includes: A first receiving module, configured to receive an LTM candidate cell configuration, wherein the LTM candidate cell configuration is used to configure an LTM candidate cell to the device; The first processing module is configured to perform a first operation based on the LTM candidate cell configuration and / or the state of a serving cell of the device.

60. An operation execution device, characterized in that: The device is used in a carrier aggregation scenario and / or a dual connection scenario, and the device includes: A second sending module, used for sending an LTM candidate cell configuration, where the LTM candidate cell configuration is used for configuring the LTM candidate cell to the terminal device; The second processing module is used to execute a third operation related to the terminal device.

61. An operation execution device, characterized in that: The device is used in a carrier aggregation scenario and / or a dual connection scenario, and the device includes: A third sending module, used to send an LTM candidate cell configuration, where the LTM candidate cell configuration is used to configure the LTM candidate cell to the terminal device; The third processing module is used to execute a fifth operation related to the terminal device.

62. A communication device, characterized in that: The communication device comprises: processor; a transceiver connected to the processor; a memory for storing executable instructions for the processor; The processor is configured to load and execute the executable instructions, and the communication device implements the operation execution method as described in any one of claims 1 to 28, or claims 29 to 43, or claims 44 to 58.

63. A computer-readable storage medium, characterized in that The computer-readable storage medium stores executable instructions, which are loaded and executed by a processor. The computer-readable storage medium is used to implement the operation execution method as described in any one of claims 1 to 28, or claims 29 to 43, or claims 44 to 58.

64. A chip, characterized in that: The chip includes a programmable logic circuit or a program, and the chip is used to implement the operation execution method described in any one of claims 1 to 28, or claims 29 to 43, or claims 44 to 58.

65. A computer program product, characterized in that The computer program product includes computer instructions, which are stored in a computer-readable storage medium. The processor of the communication device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the communication device performs the operation execution method described in any one of claims 1 to 28, or claims 29 to 43, or claims 44 to 58.

66. A computer program, characterized in that The computer program includes computer instructions, and the processor of the communication device executes the computer instructions, so that the communication device performs the operation execution method as described in any one of claims 1 to 28, or claims 29 to 43, or claims 44 to 58.

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