Resource configuration method and device in switching process, equipment, chip and storage medium

Abstract

The application of the invention is a divisional application of 202180104219.4. The invention discloses a resource allocation method and device in a switching process, equipment, a chip and a storage medium, and belongs to the field of communication. The method comprises: a terminal device receives a first switching message sent by a source network device, the first switching message being configured by a target network device, and the target network device being a network device of a target cell; and the terminal equipment accesses the target cell according to the first switching message. According to the method, the resources in the cell switching process can be configured for the terminal equipment.

Description

[0001] This application is a divisional application. The application number of the parent application is 202180104219.4, the application date is December 22, 2021, and the name of the invention is "Resource configuration method, device, equipment, chip and storage medium in the switching process". Technical Field

[0002] The present application relates to the field of communications, and in particular to a resource configuration method, device, equipment, chip and storage medium for a switching process. Background Art

[0003] In a New Radio (NR) system and / or a Non Terrestrial Network (NTN) system, a RACH-less (no random access channel) based handover procedure (RACH-less Handover, RACH-less HO) may be introduced.

[0004] How to allocate resources in this process is a problem to be solved. Summary of the invention

[0005] The embodiment of the present application provides a resource configuration method, device, equipment, chip and storage medium for a switching process. The technical solution is as follows:

[0006] According to one aspect of the present application, a resource configuration method for a switching process is provided, the method comprising:

[0007] The terminal device receives a first switching message sent by a source network device, wherein the first switching message is configured by a target network device, and the target network device is a network device of a target cell;

[0008] The terminal device accesses the target cell according to the first switching message.

[0009] According to another aspect of the present application, a resource configuration method for a switching process is provided, the method comprising:

[0010] The target network device configures a first switching message;

[0011] The target network device sends the first switching message to the terminal device through the source network device;

[0012] The first switching message is used for the terminal device to access the target cell, and the target network device is the network device of the target cell.

[0013] According to another aspect of the present application, a resource configuration method for a switching process is provided, the method comprising:

[0014] The source network device receives a first switching message configured by the target network device;

[0015] The source network device sends a first switching message to the terminal device;

[0016] The first switching message is used for the terminal device to access the target cell, and the target network device is the network device of the target cell.

[0017] According to another aspect of the present application, a resource configuration device for a switching process is provided, the device comprising:

[0018] A receiving module, configured to receive a first switching message sent by a source network device, wherein the first switching message is configured by a target network device, and the target network device is a network device of a target cell;

[0019] The access module is used to access the target cell according to the first switching message.

[0020] According to another aspect of the present application, a resource configuration device for a switching process is provided, the device comprising:

[0021] A configuration module, used to configure a first switching message;

[0022] A sending module, used for sending the first switching message to the terminal device through the source network device;

[0023] The first switching message is used for the terminal device to access the target cell, and the target network device is the network device of the target cell.

[0024] According to another aspect of the present application, a resource configuration device for a switching process is provided, the device comprising:

[0025] A receiving module, configured to receive a first switching message configured by a target network device;

[0026] A sending module, used for sending a first switching message to a terminal device;

[0027] The first switching message is used for the terminal device to access the target cell, and the target network device is the network device of the target cell.

[0028] According to another aspect of the present application, a communication device is provided, the communication device comprising:

[0029] A processor and a memory; the memory stores a computer program, wherein the computer program is loaded and executed by the processor to implement the resource configuration method of the switching process as above.

[0030] According to another 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, the resource configuration method of the switching process as described above is implemented.

[0031] According to another aspect of the present application, a computer-readable storage medium is provided, in which a computer program is stored. The computer program is used for a processor to execute to implement the resource configuration method of the switching process as described above.

[0032] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0033] The first switching message is configured by the target network device and forwarded to the terminal device through the source network device. The terminal device accesses the target cell of the target network device according to the first switching message. The first switching message does not include the configuration for determining the PRACH resources, thereby solving the resource configuration problem in the RACH-less switching process.

[0034] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 paying any creative work.

[0036] Figure 1 is a schematic diagram of the architecture of a communication system provided according to an exemplary embodiment;

[0037] Figure 2 is a flow chart of a resource configuration method for a switching process provided according to an exemplary embodiment;

[0038] Figure 3 is a flowchart of a resource configuration method for a switching process provided according to another exemplary embodiment;

[0039] Figure 4 is a flowchart of a resource configuration method for a switching process provided according to another exemplary embodiment;

[0040] Figure 5 is a flowchart of a resource configuration method for a switching process provided according to another exemplary embodiment;

[0041] Figure 6 is a flowchart of a resource configuration method for a switching process provided according to another exemplary embodiment;

[0042] Figure 7 is a flowchart of a resource configuration method for a switching process provided according to another exemplary embodiment;

[0043] Figure 8 is a flowchart of a resource configuration method for a switching process provided according to another exemplary embodiment;

[0044] Fig. 9 is a flowchart of a resource configuration method for a switching process provided according to another exemplary embodiment;

[0045] Fig.10 is a flowchart of a resource configuration method for a switching process provided according to another exemplary embodiment;

[0046] Fig.11 is a structural block diagram of a resource configuration device for a switching process provided according to an exemplary embodiment;

[0047] Fig.12 is a structural block diagram of a resource configuration device for a switching process provided according to another exemplary embodiment;

[0048] Fig.13 is a structural block diagram of a resource configuration device for a switching process provided according to another exemplary embodiment;

[0049] Fig.14 It is a structural block diagram of a communication device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0050] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0051] Currently, 3GPP is studying Non Terrestrial Network (NTN) technology. NTN generally uses satellite communications to provide communication services to ground users. NTN systems currently include NR-NTN (New Radio NTN) and IoT-NTN (Internet of Things NTN) systems.

[0052] For example, Figure 1 A is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. Figure 1 As shown in A, the communication system may include a network device 1201, which may be a device that communicates with a terminal device 1101 (or referred to as a communication terminal or terminal). The network device 1201 may provide communication coverage for a specific geographic area and may communicate with terminal devices located in the coverage area.

[0053] Figure 1 A exemplarily shows a network device and two terminal devices. In some embodiments of the present application, the communication system may include multiple network devices and the coverage area of ​​each network device may include other numbers of terminal devices, which is not limited in the embodiments of the present application.

[0054] For example, Figure 1 B shows a schematic diagram of the architecture of another communication system provided in an embodiment of the present application. Figure 1 B. The communication system includes a terminal device 1102 and a satellite 1301. Wireless communication can be performed between the terminal device 1102 and the satellite 1301. The network formed between the terminal device 1102 and the satellite 1301 can also be called an NTN. Figure 1 In the architecture of the communication system shown in B, the satellite 1301 may have the function of a base station, and the terminal device 1102 and the satellite 1301 may communicate directly. In the system architecture, the satellite 1301 may be referred to as a network device. In some embodiments of the present application, the communication system may include multiple network devices 1301, and each network device 1301 may include other number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0055] For example, Figure 1 C is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application. Figure 1 C, including terminal device 1103, satellite 1302 and base station 1202, terminal device 1103 and satellite 1302 can communicate wirelessly, and satellite 1302 and base station 1202 can communicate. The network formed by terminal device 1103, satellite 1302 and base station 1202 can also be called NTN. Figure 1 In the architecture of the communication system shown in C, the satellite 1302 may not have the function of a base station, and the communication between the terminal device 1103 and the base station 1202 needs to be transferred through the satellite 1302. In this system architecture, the base station 1202 can be called a network device. In some embodiments of the present application, the communication system may include multiple network devices 1202, and each network device 1202 may include other number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0056] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as UE (User Equipment), access terminal, user unit, user station, mobile station, MS (Mobile Station), MT (Mobile Terminal), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0057] In an embodiment of the present application, the terminal device may be a ST (STATION) in a WLAN (Wireless Local Area Networks), a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (wireless local loop) station, a PDA (Personal Digital Assistant) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved PLMN (Public Land Mobile Network) network, etc.

[0058] In the embodiment of the present application, the terminal device may be a device that provides voice and / or data connectivity to the user, and may be used to connect people, objects and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device in the embodiment of the present application may be a mobile phone, a tablet computer, a laptop, a PDA, a mobile Internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control (Industrial Control), a wireless terminal in self-driving (Self Driving), a wireless terminal in remote medical surgery (Remote Medical Surgery), a wireless terminal in smart grid (Smart Grid), a wireless terminal in transportation safety (Transportation Safety), a wireless terminal in smart city (Smart City), a wireless terminal in smart home (Smart Home), etc. Optionally, the UE may be used to act as a base station. For example, the UE may act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using sidelink signals. Cellular phones and smart home devices communicate with each other without relaying the communication signal through a base station.

[0059] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

[0060] In the embodiment of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, or a wireless terminal device in smart home, etc. The terminal device involved in the embodiment of the present application may also be referred to as a terminal, a user equipment (UE), an access terminal device, a vehicle terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a UE agent, or a UE device, etc. The terminal device may also be fixed or mobile.

[0061] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0062] The network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may also be referred to as an access network device or a wireless access network device, such as a base station. The network device in the embodiment of the present application may refer to a wireless access network (Radio Access Network, RAN) node (or device) that connects a terminal device to a wireless network. Base station can broadly cover various names as follows, or replace with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmission point (TRP), transmission point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, base band unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station may also refer to a communication module, modem or chip used to be set in the aforementioned device or apparatus. The base station may also be a mobile switching center and a device that performs the base station function in D2D (Device-to-Device), Vehicle-to-everything (V2X), Machine-to-Machine (M2M) communications, a network-side device in a 6G network, and a device that performs the base station function in future communication systems. The base station can support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network equipment.

[0063] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0064] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device includes a CU and a DU. The gNB may also include an AAU.

[0065] The network equipment and terminal equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on aircraft, balloons and satellites in the air. The embodiments of the present application do not limit the scenarios in which the network equipment and terminal equipment are located.

[0066] As an example and not limitation, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. In some embodiments of the present application, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. In some embodiments of the present application, the network device may also be a base station set up in a location such as land or water.

[0067] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0068] It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0069] In the related art of the present application, RACH-less based switching is supported in the LTE (Long Term Evolution) system. When a terminal device in a connected state is configured with RACH-less based switching, the switching process is as follows:

[0070] First, the source base station of the source cell initiates a handover request message (HANDOVERREQUEST message) to the target base station of the target cell;

[0071] Optionally, the switching request message includes the target cell ID and / or the C-RNTI (Cell-Radio Network Temporary Identifier) ​​(also called old C-RNTI) of the terminal device to be switched in the source cell.

[0072] Then, the target base station sends a handover request response message (HANDOVER REQUESTACKNOWLEDGE) to the source base station;

[0073] Optionally, the handover request response message includes an RRC (Radio Resource Control) message sent to the terminal device for implementing the handover, such as a transparent data packet (Transparent Container). Optionally, the RRC message (or transparent data packet) includes new C-RNTI (C-RNTI allocated by the target base station) and timing adjustment indication (Timing Adjustment Indication) information. Optionally, the RRC message may also include preallocated uplink grant (Preallocated Uplink Grant, PUG) information.

[0074] Next, the source base station forwards the RRC message sent by the target base station to the terminal device;

[0075] Finally, the terminal device receives the RRC message, and after completing synchronization with the target cell, initiates the switching process according to the timing adjustment indication information.

[0076] Optionally, the RRC message includes pre-allocated uplink authorization information, and the terminal device accesses the target cell according to the pre-allocated uplink authorization information; optionally, the pre-allocated uplink authorization information includes the following information:

[0077] Number of ConfUL-Processes: The value is between 1 and 8.

[0078] Uplink scheduling interval (ul-SchedInterval): The value is 2 subframes, 5 subframes or 10 subframes.

[0079] Uplink start subframe (ul-StartSubframe): takes a value from 0 to 9.

[0080] Uplink Grant Information (ul-Grant): The uplink grant information includes 16 bits. Optionally, the uplink grant information includes:

[0081] Frequency hopping indication, 1 bit; fixed-size resource block (RB) allocation, 10 bits;

[0082] Truncated modulation and coding scheme (MCS), 4 bits; CQI request, 1 bit.

[0083] Optionally, the RRC message does not include pre-allocated uplink authorization information, and the terminal device receives the uplink authorization information by monitoring the PDCCH of the target cell.

[0084] Optionally, after synchronizing to the target cell, the terminal device uses the first available uplink authorization information to access the target cell.

[0085] Optionally, the terminal device determines N during synchronization TA When the parameters are set, one of the following three situations is included: using the timing adjustment indication information, N TA = 0, or reuse the source cell's N TA Among them, N TA The value is used to determine the TA value of the terminal device when accessing the target cell.

[0086] Optionally, the timing adjustment indication information is used to indicate that the target timing advance (TA) (for example, targetTA) is one of the following: ta0, mcg-PTAG (Master Cell Group-Primary Timing Advance Group), scg-PTAG (Secondary Cell Group-Primary Timing Advance Group), mcg-STAG (Master Cell Group-Secondary Timing Advance Group), scg-STAG (Secondary Cell Group-Secondary Timing Advance Group). Among them, ta0 corresponds to N TA = 0; mcg-PTAG corresponds to the latest N in the PTAG of the associated MCG TA Value; scg-PTAG corresponds to the latest N in the PTAG of the reused associated SCGTA Value; mcg-STAG corresponds to the latest N of the MCG STAG indicated by STAG-Id TA Value; scg-STAG corresponds to the latest N of the SCG STAG indicated by STAG-Id TA value.

[0087] In some optional embodiments, during the above-mentioned switching process, the source base station and the terminal device both retain some contexts (eg, C-RNTI) so that the terminal device can return to the source base station in case of a switching failure.

[0088] Figure 2 : is a flowchart of a resource configuration method for a switching process provided by an exemplary embodiment of the present application, the method comprising:

[0089] Step 220, the terminal device receives a first switching message sent by the source network device, wherein the first switching message is configured by the target network device, and the target network device is a network device of a target cell;

[0090] In some optional embodiments, the first switching message carries configuration information related to the NR system; and / or, the source network device is a network device in the NR system; and / or, the target network device is a network device in the NR system.

[0091] In some optional embodiments, the first switching message carries configuration information related to the NTN system; and / or, the source network device is a network device in the NTN system; and / or, the target network device is a network device in the NTN system.

[0092] In some optional embodiments, the first switching message includes timing adjustment indication information and / or uplink scheduling timing offset value Koffset.

[0093] In some optional embodiments, the first switching message includes at least one of the following information:

[0094] Subcarrier spacing configuration;

[0095] PDCCH (Physical Downlink Control Channel) configuration;

[0096] Control resource collection configuration;

[0097] Search space set configuration;

[0098] Configuration of pre-authorized resources;

[0099] First RNTI;

[0100] Timing adjustment indication information;

[0101] Uplink scheduling timing offset value Koffset;

[0102] Uplink transmission waveform information.

[0103] In all embodiments of the present application, for the subcarrier spacing configuration, optionally, the subcarrier spacing configuration is used to determine a first subcarrier spacing, wherein the first subcarrier spacing is used for the terminal device to send PUSCH (Physical Uplink Shared Channel) and / or PUCCH (Physical Uplink Control Channel) to the target cell. For example, the subcarrier spacing configuration is used to indicate the first subcarrier spacing. Optionally, the subcarrier spacing configuration is used to determine a second subcarrier spacing, wherein the second subcarrier spacing is used for the terminal device to receive PDCCH and / or PDSCH (Physical Downlink Shared Channel) sent by the target cell. For example, the subcarrier spacing configuration is used to indicate the second subcarrier spacing. Optionally, the first subcarrier spacing and the second subcarrier spacing are the same. For example, the subcarrier spacing indicated by the subcarrier spacing configuration is both the first subcarrier spacing and the second subcarrier spacing.

[0104] In all embodiments of the present application, for PDCCH configuration, optionally, the PDCCH configuration is used to determine the control resource set configuration and / or search space set configuration associated with the PDCCH candidate of the target cell. Optionally, the PDCCH configuration is used to indicate the control resource set ID and / or search space set ID associated with the PDCCH candidate when the terminal device monitors the PDCCH candidate of the target cell.

[0105] In all embodiments of the present application, for the control resource set configuration, optionally, the control resource set configuration is used to indicate the control resource set configuration information associated with the control resource set ID and / or the search space set ID. Optionally, the control resource set configuration information is used to determine at least one of the following: the RBs occupied by the control resource set in the frequency domain, the number of symbols occupied by the control resource set in the time domain, and the quasi-co-location information associated with the control resource set.

[0106] In all embodiments of the present application, optionally, the control resource set configuration information is used to determine the RB occupied by the control resource set in the frequency domain, including: the control resource set configuration information is used to indicate at least one of the following information: the starting RB of the control resource set in the frequency domain, the number of RBs occupied by the control resource set in the frequency domain, and the RBs occupied by the control resource set in the frequency domain.

[0107] In all embodiments of the present application, optionally, the control resource set configuration information is used to determine the number of symbols occupied by the control resource set in the time domain, including: the control resource set configuration information is used to indicate the number of symbols occupied by the control resource set in the time domain.

[0108] In all embodiments of the present application, optionally, the control resource set configuration information is used to determine the quasi co-location information associated with the control resource set, including: the control resource set configuration information is used to indicate the quasi co-location information associated with the control resource set.

[0109] It should be understood that Quasi Co-Location (QCL) means that the large-scale parameters of the channel experienced by the symbol on a certain antenna port can be inferred from the channel experienced by the symbol on another antenna port. The large-scale parameters may include delay spread, average delay, Doppler spread, Doppler shift, average gain, and spatial reception parameters.

[0110] In all embodiments of the present application, optionally, the quasi co-location information includes at least one of the following: transmission configuration indicator (TCI) information, QCL reference signal information, and QCL type configuration.

[0111] In all embodiments of the present application, optionally, the QCL type configuration includes at least one of the following: 'QCL-TypeA', 'QCL-TypeB', 'QCL-TypeC', 'QCL-TypeD'.

[0112] In all embodiments of the present application, optionally, the definitions of different QCL type configurations are as follows:

[0113] 'QCL-TypeA':{Doppler shift, Doppler spread, average delay, delay spread};

[0114] 'QCL-TypeB': {Doppler shift, Doppler spread};

[0115] 'QCL-TypeC':{Doppler shift, average delay};

[0116] 'QCL-TypeD':{Spatial Rx Parameter}.

[0117] In all embodiments of the present application, for the search space set configuration, optionally, the search space set configuration is used to indicate the search space set configuration information associated with the search space set ID. Optionally, the search space set configuration information is used to determine at least one of the following: the time unit occupied by the search space set in the time domain, the symbol occupied by the search space set in the occupied time unit, the search space set type, the DCI (Downlink Control Information) format of the PDCCH candidate, the aggregation level associated with the PDCCH candidate, and the number of blind monitoring times corresponding to the aggregation level of the PDCCH candidate.

[0118] In all embodiments of the present application, optionally, the search space set configuration information is used to determine the time unit occupied by the search space set in the time domain, including: the search space set configuration information is used to indicate the monitoring time slot period and / or offset configuration parameters of the search space set. Optionally, the time unit occupied by the search space set in the time domain includes a time slot determined according to the monitoring time slot period and the offset configuration parameters.

[0119] In all embodiments of the present application, optionally, the search space set configuration information is used to determine the symbol occupied by the search space set in the occupied time unit, including: the search space set configuration information is used to indicate the symbol occupied by the time slot determined according to the monitoring time slot period and / or offset configuration parameters of the search space set. Optionally, the search space set configuration information is used to use the symbol occupied by the time slot determined according to the monitoring time slot period and the offset configuration parameters as the starting symbol of the search space set.

[0120] In all embodiments of the present application, optionally, the search space set configuration information is used to determine the search space set type, including: the search space set configuration information is used to indicate a common search space set and / or a UE-specific search space set.

[0121] In all embodiments of the present application, optionally, the DCI format includes at least one of the following: DCI format 0_0, DCI format 1_0.

[0122] In all embodiments of the present application, for the configuration of pre-authorized resources, optionally, the configuration of pre-authorized resources is used to determine at least one of the following information: configuration ID of pre-authorized resources, frequency domain frequency hopping indication, DMRS (DeModulation Reference Signal) parameter configuration, frequency domain resource allocation type, uplink transmission waveform information, pre-configured uplink HARQ (Hybrid Automatic Repeat Request) process number, pre-authorized resource period, number of repetitions of transmission using pre-authorized resources, RV (Redundancy Version) version corresponding to repeated transmission using pre-authorized resources, time unit occupied by pre-authorized resources in time domain, starting symbol and number of symbols occupied by pre-authorized resources in occupied time unit, RB (Resource Block) occupied by pre-authorized resources in frequency domain, antenna port, DMRS sequence initialization parameter, precoding and layer number indication, MCS (Molation and Coding Scheme) and TBS (Transport Block Size) indication, SRS (Sounding Reference Signal, detection reference signal) resource indication, frequency domain frequency hopping offset indication and path loss reference indication.

[0123] In all embodiments of the present application, optionally, the configuration of pre-authorized resources is used to determine a frequency domain frequency hopping indication, including: the configuration of pre-authorized resources is used to indicate whether to frequency hop, and / or, frequency hopping within a time unit, and / or frequency hopping between time units.

[0124] In all embodiments of the present application, optionally, the configuration of the pre-authorized resources is used to determine the DMRS parameter configuration, including: the configuration of the pre-authorized resources is used to indicate the position of the DMRS in the pre-authorized resources.

[0125] In all embodiments of the present application, the configuration of the pre-authorized resources is optionally used to determine the frequency domain resource allocation type, including: the configuration of the pre-authorized resources is used to indicate the type on which the frequency domain resource allocation is based. Optionally, the configuration of the pre-authorized resources is used to indicate that the frequency domain resource allocation is based on type 0, type 1, or type 2.

[0126] In all embodiments of the present application, optionally, the configuration of the pre-authorized resources is used to determine the time unit occupied by the pre-authorized resources in the time domain, including: the configuration of the pre-authorized resources is used to indicate the time slot occupied by the pre-authorized resources in the time domain determined according to the time domain offset.

[0127] In all embodiments of the present application, optionally, the configuration of pre-authorized resources is used to determine the starting symbol and the number of symbols occupied by the pre-authorized resources in the occupied time unit, including: the configuration of pre-authorized resources is used to indicate the starting symbol and the number of symbols occupied by the pre-authorized resources in the occupied time slot determined according to the time domain resource allocation information.

[0128] In all embodiments of the present application, optionally, the configuration of pre-authorized resources is used to determine the RBs occupied by the pre-authorized resources in the frequency domain, including: the configuration of pre-authorized resources is used to indicate the RBs occupied by the pre-authorized resources in the frequency domain based on frequency domain resource allocation parameters and frequency domain resource allocation types.

[0129] In all embodiments of the present application, for the first RNTI, optionally, the first RNTI includes a cell wireless network device temporary identifier C-RNTI allocated by the target network device to the terminal device. Optionally, the first RNTI includes a configured scheduling wireless network device temporary identifier CS-RNTI (Configured SchedulingRNTI) allocated by the target network device to the terminal device.

[0130] In all embodiments of the present application, for the timing adjustment indication information, optionally, the timing adjustment indication information is used to determine the TA value of the target cell. For example, the timing adjustment indication information is used to determine the TA value used by the terminal device when performing PUSCH transmission through the PUSCH resources in the target cell.

[0131] In all embodiments of the present application, optionally, there is an association relationship between the TA value of the target cell, the timing adjustment indication information and the first subcarrier spacing. For example, the TA value of the target cell is determined based on the timing adjustment indication information and the first subcarrier spacing. The first subcarrier spacing is used by the terminal device to send PUSCH and / or PUCCH to the target cell.

[0132] In all embodiments of the present application, optionally, in the process of determining the TA value of the target cell, the terminal device TA When the parameters are set, one of the following three situations is included: using the timing adjustment indication information, N TA = 0, or reuse the source cell's N TA Optionally, the timing adjustment indication information is used to indicate that the TA value of the target cell is determined according to one of the following: ta0, mcg-PTAG, scg-PTAG, mcg-STAG, scg-STAG.

[0133] In all embodiments of the present application, optionally, the timing adjustment indication information is used to determine at least one of the following information: ephemeris information, common timing value (Common TA), common timing value offset value (Common drift), common timing value offset value change value (Common drift variation rate), common transmission delay, reference time t0 (epoch time) and timer length. Optionally, in this case, the timing adjustment indication information configuration is applied to the NTN network.

[0134] In all embodiments of the present application, optionally, the timer length is used to determine the validity period of at least one item of information in the timing adjustment indication information. Optionally, the terminal device obtains information based on the timing adjustment indication information and completes time domain and / or frequency domain synchronization with the first network device based on its own GNSS (Global Navigation Satellite System) capability.

[0135] In all embodiments of the present application, for the uplink scheduling timing offset value Koffset, optionally, the uplink scheduling timing offset value Koffset is used to determine at least one of the following scheduling timings: the timing of the terminal device performing PUSCH transmission to the first network device, and the timing of the terminal device performing PUCCH transmission to the first network device. Optionally, in this case, the uplink scheduling timing offset value Koffset is applied to the NTN network.

[0136] In all embodiments of the present application, for uplink transmission waveform information, optionally, the uplink transmission waveform information is used to determine whether DFT (Discrete Fourier Transform) precoding is used when the terminal device performs uplink transmission to the target network device, or in other words, it is used to determine whether the waveform used when the terminal device performs uplink transmission to the target network device is an OFDM (Orthogonal Frequency Division Multiplexing) waveform or a DFT-S-OFDM (Discrete Fourier Transform-Spread OFDM) waveform. Among them, the DFT-S-OFDM waveform can also be called a single carrier waveform.

[0137] As an example, the uplink transmission waveform information is a high-level configuration parameter such as transformPrecoder. When transformPrecoder is configured to be enabled, the uplink transmission waveform information is used to indicate that DFT precoding (or the corresponding DFT-S-OFDM waveform) is used during uplink transmission; when transformPrecoder is configured to be disabled, the uplink transmission waveform information is used to indicate that DFT precoding (or the corresponding OFDM waveform) is not used during uplink transmission.

[0138] Optionally, when uplink transmission waveform information is not configured for the terminal device, the default uplink transmission waveform is to use DFT precoding (or the corresponding DFT-S-OFDM waveform) during uplink transmission.

[0139] Optionally, when uplink transmission waveform information is not configured for the terminal device, the default uplink transmission waveform is to not use DFT precoding (or the corresponding OFDM waveform) during uplink transmission.

[0140] Step 240: The terminal device accesses the target cell according to the first switching message.

[0141] In some optional embodiments, the first switching message carries resource configuration related to NR and / or NTN, and access is performed to the target cell based on access resources corresponding to the resource configuration.

[0142] In some optional embodiments, the first switching message includes a pre-authorized resource configuration, and the terminal device accesses the target cell according to the pre-authorized resource configuration; please refer to the following Figure 3 Illustrative embodiments are shown.

[0143] In some optional embodiments, the first switching message includes a PDCCH configuration, and the terminal device accesses the target cell according to the PDCCH configuration. For details, please refer to the following Figure 4 Illustrative embodiments are shown.

[0144] In some optional embodiments, the first switching message includes a PDCCH configuration and a pre-authorized resource configuration, and the terminal device accesses the target cell according to the pre-authorized resource configuration and the PDCCH configuration. For details, please refer to the following Figure 5 Illustrative embodiments are shown.

[0145] In some optional embodiments, in the NTN scenario, for example, when the first switching message carries configuration information related to the NTN system; and / or the source network device is a network device in the NTN system; and / or the target network device is a network device in the NTN system, the terminal device accesses the target cell according to the first switching message, including: after the terminal device is synchronized to the target cell, accessing the target cell according to the first switching message.

[0146] Optionally, in the NTN scenario, the terminal device is synchronized to the target cell, including: the terminal device is synchronized to the target cell according to a first switching message, wherein the first switching message includes timing adjustment indication information, and the timing adjustment indication information is used to determine at least one of the following information: ephemeris information, a common timing value, an offset value of the common timing value, a change value of the offset value of the common timing value, a common transmission delay, a reference time t0, and a timer length.

[0147] In some optional embodiments, the terminal device is configured with a RACH-less switching process, or the first switching message does not include a configuration of a PRACH resource.

[0148] In some optional embodiments, the terminal device is configured not to use a switching process based on a random access channel, or to use a switching process without a random access channel, or to use a switching process based on an uplink data channel.

[0149] In summary, the first switching message is configured by the target network device and forwarded to the terminal device by the source network device. The terminal device accesses the target cell of the target network device according to the first switching message, thereby solving the resource configuration problem in the RACH-less switching process.

[0150] Figure 3 is a flowchart of a resource configuration method for a switching process provided by another exemplary embodiment of the present application, the method comprising:

[0151] Step 320: The terminal device receives a first handover message sent by the source network device, wherein the first handover message is configured by the target network device, the target network device is a network device of a target cell, and the first handover message includes a configuration of pre-authorized resources;

[0152] In some optional embodiments, the first switching message includes:

[0153] Configuration of pre-authorized resources;

[0154] Subcarrier spacing configuration;

[0155] First RNTI.

[0156] Regarding the configuration of pre-authorized resources, optionally, the configuration of pre-authorized resources is used to determine at least one of the following information: configuration ID of pre-authorized resources, frequency domain hopping indication, DMRS parameter configuration, frequency domain resource allocation type, uplink transmission waveform information, pre-configured uplink HARQ process number, period of pre-authorized resources, number of repetitions of transmission using pre-authorized resources, RV version corresponding to repeated transmission using pre-authorized resources, time unit occupied by pre-authorized resources in time domain, starting symbol and number of symbols occupied by pre-authorized resources in the occupied time unit, RB occupied by pre-authorized resources in frequency domain, antenna port, DMRS sequence initialization parameters, precoding and layer number indication, MCS and TBS indication, SRS resource indication, frequency domain hopping offset indication, and path loss reference indication.

[0157] Optionally, for detailed description of the configuration of the pre-authorized resources, please refer to “Configuration of pre-authorized resources” in the above step 220.

[0158] Optionally, for detailed description of the uplink transmission waveform information, please refer to “for uplink transmission waveform information” in the above step 220.

[0159] For subcarrier spacing configuration, optionally, the subcarrier spacing configuration is used to determine a first subcarrier spacing, wherein the first subcarrier spacing is used by the terminal device to send PUSCH and / or PUCCH to the target cell. For example, the subcarrier spacing configuration is used to indicate the first subcarrier spacing.

[0160] For the first RNTI, optionally, the first RNTI includes a C-RNTI allocated by the target network device to the terminal device.

[0161] Step 340, the terminal device determines the pre-authorized resources of the target cell according to the configuration of the pre-authorized resources;

[0162] In some optional embodiments, the terminal device determines the pre-authorized resources of the target cell according to the configuration of the pre-authorized resources.

[0163] Step 360: The terminal device accesses the target cell according to at least one resource in the pre-authorized resources.

[0164] Optionally, the terminal device accesses the target cell according to at least one resource in the pre-authorized resources, including: the terminal device sends a PUSCH to the target cell according to at least one resource in the pre-authorized resources.

[0165] In some optional embodiments, after being synchronized to the target cell, the terminal device uses the first available resource in the pre-authorized resources to send a PUSCH to the target cell.

[0166] Optionally, after synchronizing to the target cell, the terminal device determines the first subcarrier spacing according to the subcarrier spacing configuration.

[0167] Optionally, the terminal device determines that the first RNTI is the C-RNTI (also called new C-RNTI) allocated by the target network device to the terminal device.

[0168] Optionally, the PUSCH sent by the terminal device to the target cell carries the first RNTI information. As another example, the transmission block carried by the PUSCH sent by the terminal device includes the first RNTI. As another example, the terminal device scrambles the PUSCH according to the first RNTI.

[0169] Optionally, the waveform of the PUSCH is determined according to uplink transmission waveform information; optionally, the waveform of the PUSCH is predefined.

[0170] In some optional embodiments, the source network device is a network device of a source cell, and both the source network device and the terminal device retain context information, and the context information is used for the terminal device to return to the source cell in case of a handover failure.

[0171] In some optional embodiments, the terminal device is configured with a RACH-less switching process, or the first switching message does not include a configuration of a PRACH resource.

[0172] In some optional embodiments, the terminal device is configured not to use a switching process based on a random access channel, or to use a switching process without a random access channel, or to use a switching process based on an uplink data channel.

[0173] To summarize, the first switching message is configured by the target network device and forwarded to the terminal device through the source network device. The terminal device accesses the target cell of the target network device according to the first switching message. The first switching message includes the configuration of pre-authorized resources, which solves the resource configuration problem in the RACH-less switching process.

[0174] Figure 4 is a flowchart of a resource configuration method for a switching process provided by another exemplary embodiment of the present application, the method comprising:

[0175] Step 420: The terminal device receives a first handover message sent by the source network device, wherein the first handover message is configured by the target network device, the target network device is a network device of a target cell, and the first handover message includes a PDCCH configuration;

[0176] In some optional embodiments, the first switching message includes:

[0177] PDCCH configuration;

[0178] Control resource collection configuration;

[0179] Search space set configuration.

[0180] In some optional embodiments, the first switching message includes:

[0181] PDCCH configuration;

[0182] Subcarrier spacing configuration;

[0183] Control resource collection configuration;

[0184] Search space set configuration;

[0185] First RNTI.

[0186] For PDCCH configuration, optionally, the PDCCH configuration is used to determine the control resource set configuration and / or search space set configuration associated with the PDCCH candidates of the target cell; optionally, the PDCCH configuration is used to indicate the control resource set ID and / or search space set ID associated with the PDCCH candidates when the terminal device monitors the PDCCH candidates of the target cell.

[0187] For subcarrier spacing configuration, optionally, the subcarrier spacing configuration is used to determine a first subcarrier spacing, wherein the first subcarrier spacing is used for the terminal device to send PUSCH and / or PUCCH to the target cell. For example, the subcarrier spacing configuration is used to indicate the first subcarrier spacing. Optionally, the subcarrier spacing configuration is used to determine a second subcarrier spacing, wherein the second subcarrier spacing is used for the terminal device to receive PDCCH and / or PDSCH sent by the target cell. For example, the subcarrier spacing configuration is used to indicate the second subcarrier spacing.

[0188] For the control resource set configuration, optionally, the control resource set configuration is used to indicate the control resource set configuration information associated with the control resource set ID and / or the search space set ID. Optionally, the control resource set configuration information is used to determine at least one of the following: the RBs occupied by the control resource set in the frequency domain, the number of symbols occupied by the control resource set in the time domain, and the quasi-co-location information associated with the control resource set.

[0189] Optionally, for detailed description of the control resource set configuration, please refer to “Configuration for the control resource set” in the above step 220.

[0190] For the search space set configuration, optionally, the search space set configuration is used to indicate the search space set configuration information associated with the search space set ID. Optionally, the search space set configuration information is used to determine at least one of the following: the time unit occupied by the search space set in the time domain, the symbol occupied by the search space set in the occupied time unit, the search space set type, the DCI format of the PDCCH candidate, the aggregation level associated with the PDCCH candidate, and the number of blind monitoring times corresponding to the aggregation level of the PDCCH candidate.

[0191] Optionally, for detailed description of the search space set configuration, please refer to “Configuration for the search space set” in the above step 220.

[0192] For the first RNTI, optionally, the first RNTI includes a C-RNTI allocated by the target network device to the terminal device.

[0193] Step 440: The terminal device monitors the PDCCH of the target cell through PDCCH configuration to access the target cell.

[0194] In some optional embodiments, the terminal device monitors PDCCH candidates according to the first RNTI on a search space set determined according to the PDCCH configuration.

[0195] Optionally, the terminal device determines the control resource set ID and / or search space set ID associated with the PDCCH candidate according to the PDCCH configuration.

[0196] Optionally, the terminal device determines the control resource set based on the control resource set configuration in combination with the control resource set ID and / or the search space set ID.

[0197] Optionally, the terminal device determines the search space set according to the search space set configuration in combination with the search space set ID.

[0198] Optionally, the terminal device determines the second subcarrier spacing according to the subcarrier spacing configuration.

[0199] Optionally, the terminal device determines that the first RNTI is the C-RNTI (also called new C-RNTI) allocated by the target network device to the terminal device.

[0200] Optionally, the terminal device monitors PDCCH candidates according to the control resource set, the search space set, the second subcarrier spacing and the new C-RNTI.

[0201] In some optional embodiments, the terminal device receives uplink authorization information through the PDCCH of the target cell, and the terminal device sends a PUSCH to the target cell using resources scheduled by the uplink authorization information.

[0202] Optionally, the terminal device determines the first subcarrier spacing according to the subcarrier spacing configuration.

[0203] Optionally, the PUSCH sent by the terminal device to the target cell carries the first RNTI information. As another example, the transmission block carried by the PUSCH sent by the terminal device includes the first RNTI. As another example, the terminal device scrambles the PUSCH according to the first RNTI.

[0204] Optionally, the waveform of the PUSCH is determined according to uplink transmission waveform information; optionally, the waveform of the PUSCH is predefined.

[0205] In some optional embodiments, the source network device is a network device of a source cell, and both the source network device and the terminal device retain context information, and the context information is used for the terminal device to return to the source cell in case of a handover failure.

[0206] In some optional embodiments, the terminal device is configured with a RACH-less switching process, or the first switching message does not include a configuration of a PRACH resource.

[0207] In some optional embodiments, the terminal device is configured not to use a switching process based on a random access channel, or to use a switching process without a random access channel, or to use a switching process based on an uplink data channel.

[0208] To summarize, the first switching message is configured by the target network device and forwarded to the terminal device through the source network device. The terminal device accesses the target cell of the target network device according to the first switching message. The first switching message includes the PDCCH configuration, which solves the resource configuration problem in the RACH-less switching process.

[0209] Figure 5 is a flowchart of a resource configuration method for a switching process provided by another exemplary embodiment of the present application, the method comprising:

[0210] Step 520: The terminal device receives a first handover message sent by the source network device, wherein the first handover message is configured by the target network device, the target network device is a network device of a target cell, and the first handover message includes a PDCCH configuration and a configuration of pre-authorized resources;

[0211] In some optional embodiments, the first switching message includes:

[0212] PDCCH configuration;

[0213] Configuration of pre-authorized resources;

[0214] Control resource collection configuration;

[0215] Search space set configuration.

[0216] In some optional embodiments, the first switching message includes:

[0217] PDCCH configuration;

[0218] Configuration of pre-authorized resources;

[0219] Subcarrier spacing configuration;

[0220] Control resource collection configuration;

[0221] Search space set configuration;

[0222] First RNTI.

[0223] For PDCCH configuration, optionally, the PDCCH configuration is used to determine the control resource set configuration and / or search space set configuration associated with the PDCCH candidate of the target cell; optionally, the PDCCH configuration is used to indicate the control resource set ID and / or search space set ID associated with the PDCCH candidate when the terminal device monitors the PDCCH candidate of the target cell.

[0224] Regarding the configuration of pre-authorized resources, optionally, the configuration of pre-authorized resources is used to determine at least one of the following information: configuration ID of pre-authorized resources, frequency domain frequency hopping indication, DMRS parameter configuration, frequency domain resource allocation type, uplink transmission waveform information, number of pre-configured uplink HARQ processes, period of pre-authorized resources, number of repetitions of transmission using pre-authorized resources, and RV version corresponding to repeated transmission using pre-authorized resources.

[0225] Optionally, for detailed description of the configuration of the pre-authorized resources, please refer to “Configuration of pre-authorized resources” in the above step 220.

[0226] For subcarrier spacing configuration, optionally, the subcarrier spacing configuration is used to determine a first subcarrier spacing, wherein the first subcarrier spacing is used for the terminal device to send PUSCH and / or PUCCH to the target cell. For example, the subcarrier spacing configuration is used to indicate the first subcarrier spacing. Optionally, the subcarrier spacing configuration is used to determine a second subcarrier spacing, wherein the second subcarrier spacing is used for the terminal device to receive PDCCH and / or PDSCH sent by the target cell. For example, the subcarrier spacing configuration is used to indicate the second subcarrier spacing.

[0227] For the control resource set configuration, optionally, the control resource set configuration is used to indicate the control resource set configuration information associated with the control resource set ID and / or the search space set ID. Optionally, the control resource set configuration information is used to determine at least one of the following: the RBs occupied by the control resource set in the frequency domain, the number of symbols occupied by the control resource set in the time domain, and the quasi-co-location information associated with the control resource set.

[0228] Optionally, for detailed description of the control resource set configuration, please refer to “Configuration for the control resource set” in the above step 220.

[0229] For the search space set configuration, optionally, the search space set configuration is used to indicate the search space set configuration information associated with the search space set ID. Optionally, the search space set configuration information is used to determine at least one of the following: the time unit occupied by the search space set in the time domain, the symbol occupied by the search space set in the occupied time unit, the search space set type, the DCI format of the PDCCH candidate, the aggregation level associated with the PDCCH candidate, and the number of blind monitoring times corresponding to the aggregation level of the PDCCH candidate.

[0230] Optionally, for detailed description of the search space set configuration, please refer to “Configuration for the search space set” in the above step 220.

[0231] For the first RNTI, optionally, the first RNTI includes a C-RNTI allocated by the target network device to the terminal device; optionally, the first RNTI includes a CS-RNTI allocated by the target network device to the terminal device.

[0232] Step 540, the terminal device monitors the PDCCH of the target cell through PDCCH configuration;

[0233] In some optional embodiments, the terminal device monitors PDCCH candidates according to the first RNTI on a search space set determined according to the PDCCH configuration.

[0234] Optionally, the terminal device determines a control resource set ID and / or a search space set ID associated with the PDCCH candidate according to the PDCCH configuration.

[0235] Optionally, the terminal device determines the control resource set according to the control resource set configuration in combination with the control resource set ID and / or search space set ID associated with the PDCCH candidate.

[0236] Optionally, the terminal device determines the search space set according to the search space set configuration and in combination with the search space set ID associated with the PDCCH candidate.

[0237] Optionally, the terminal device determines the second subcarrier spacing according to the subcarrier spacing configuration.

[0238] Optionally, the terminal device determines that the first RNTI is the C-RNTI (also called new C-RNTI) allocated by the target network device to the terminal device.

[0239] Optionally, the terminal device monitors PDCCH candidates according to the control resource set, the search space set, the second subcarrier spacing and the new C-RNTI.

[0240] Step 560, the terminal device receives an activation authorization for the configuration of the pre-authorized resources through the PDCCH of the target cell;

[0241] Optionally, the activation authorization is used to determine at least one of the following information: the time unit occupied by the pre-authorized resources in the time domain; the starting symbol and the number of symbols occupied by the pre-authorized resources in the occupied time unit; the RB occupied by the pre-authorized resources in the frequency domain; the antenna port; the DMRS sequence initialization parameters; the precoding and layer number indication; the MCS and TBS indication; the SRS resource indication; the frequency domain hopping offset indication; and the path loss reference indication.

[0242] Optionally, the activation authorization is used to determine the time unit occupied by the pre-authorized resources in the time domain, including: the activation authorization is used to determine the time slot occupied by the pre-authorized resources in the time domain according to the time domain offset.

[0243] Optionally, the activation authorization is used to determine the starting symbol and the number of symbols occupied by the pre-authorized resources in the occupied time unit, including: the activation authorization is used to determine the starting symbol and the number of symbols occupied by the pre-authorized resources in the occupied time slot according to the time domain resource allocation information.

[0244] Optionally, the activation authorization is used to determine the RBs occupied by the pre-authorized resources in the frequency domain, including: the activation authorization is used to determine the RBs occupied by the pre-authorized resources in the frequency domain according to the frequency domain resource allocation parameters and the frequency domain resource allocation type.

[0245] Step 580: The terminal device accesses the target cell according to the resources determined by the activation authorization.

[0246] In some optional embodiments, the terminal device determines the pre-authorized resources of the target cell according to the configuration of the activation authorization and the pre-authorized resources; after synchronizing to the target cell, the terminal device uses the first available resource in the pre-authorized resources to send PUSCH to the target cell.

[0247] Optionally, after synchronizing to the target cell, the terminal device determines the first subcarrier spacing according to the subcarrier spacing configuration.

[0248] Optionally, the PUSCH sent by the terminal device to the target cell carries the first RNTI information. As another example, the transmission block carried by the PUSCH sent by the terminal device includes the first RNTI. As another example, the terminal device scrambles the PUSCH according to the first RNTI.

[0249] Optionally, the waveform of the PUSCH is determined according to uplink transmission waveform information; optionally, the waveform of the PUSCH is predefined.

[0250] In some optional embodiments, the source network device is a network device of a source cell, and both the source network device and the terminal device retain context information, and the context information is used for the terminal device to return to the source cell in case of a handover failure.

[0251] In some optional embodiments, the terminal device is configured with a RACH-less switching process, or the first switching message does not include a configuration of a PRACH resource.

[0252] In some optional embodiments, the terminal device is configured not to use a switching process based on a random access channel, or to use a switching process without a random access channel, or to use a switching process based on an uplink data channel.

[0253] To summarize, the first switching message is configured by the target network device and forwarded to the terminal device through the source network device. The terminal device accesses the target cell of the target network device according to the first switching message. The first switching message includes the configuration of pre-authorized resources and PDCCH configuration, which solves the resource configuration problem in the RACH-less switching process.

[0254] Figure 6 A flowchart of a resource configuration method for a switching process provided by another exemplary embodiment of the present application is shown, the method comprising:

[0255] Step 620, the target network device configures a first switching message;

[0256] In some optional embodiments, the first switching message carries configuration information related to the NR system; and / or, the source network device is a network device in the NR system; and / or, the target network device is a network device in the NR system.

[0257] In some optional embodiments, the first switching message carries configuration information related to the NTN system; and / or the source network device is a network device in the NTN system; and / or the target network device is a network device in the NTN system. Optionally, the first switching message includes timing adjustment indication information and / or an uplink scheduling timing offset value Koffset.

[0258] In some optional embodiments, the first switching message includes at least one of the following information:

[0259] Subcarrier spacing configuration;

[0260] PDCCH configuration;

[0261] Control resource collection configuration;

[0262] Search space set configuration;

[0263] Configuration of pre-authorized resources;

[0264] First RNTI;

[0265] Timing adjustment indication information;

[0266] Uplink scheduling timing offset value Koffset;

[0267] Uplink transmission waveform information.

[0268] For the subcarrier spacing configuration, optionally, the subcarrier spacing configuration is used to determine a first subcarrier spacing, wherein the first subcarrier spacing is used for the terminal device to send PUSCH and / or PUCCH to the target cell; optionally, the subcarrier spacing configuration is used to determine a second subcarrier spacing, wherein the second subcarrier spacing is used for the terminal device to receive PDCCH and / or PDSCH sent by the target cell.

[0269] For PDCCH configuration, optionally, the PDCCH configuration is used to determine the control resource set configuration and / or search space set configuration associated with the PDCCH candidate of the target cell. Optionally, the PDCCH configuration is used to indicate the control resource set ID and / or search space set ID associated with the PDCCH candidate when the terminal device monitors the PDCCH candidate of the target cell.

[0270] For the control resource set configuration, optionally, the control resource set configuration is used to indicate the control resource set configuration information associated with the control resource set ID and / or the search space set ID; the control resource set configuration information is used to determine at least one of the following: the RB occupied by the control resource set in the frequency domain, the number of symbols occupied by the control resource set in the time domain, and the quasi-co-location information associated with the control resource set.

[0271] Optionally, for detailed description of the control resource set configuration, please refer to “Configuration for the control resource set” in the above step 220.

[0272] For the search space set configuration, optionally, the search space set configuration is used to indicate the search space set configuration information associated with the search space set ID; the search space set configuration information is used to determine at least one of the following: the time unit occupied by the search space set in the time domain, the symbol occupied by the search space set in the occupied time unit, the search space set type, the DCI format of the PDCCH candidate, the aggregation level associated with the PDCCH candidate, and the number of blind monitoring times corresponding to the aggregation level of the PDCCH candidate.

[0273] Optionally, for detailed description of the search space set configuration, please refer to “Configuration for the search space set” in the above step 220.

[0274] Regarding the configuration of pre-authorized resources, optionally, the configuration of pre-authorized resources is used to determine at least one of the following information: configuration ID of pre-authorized resources, frequency domain hopping indication, demodulation reference signal DMRS parameter configuration, frequency domain resource allocation type, uplink transmission waveform information, pre-configured uplink hybrid automatic repeat request HARQ process number, pre-authorized resource period, number of repetitions of transmission using pre-authorized resources, redundant RV version corresponding to repeated transmission using pre-authorized resources, time unit occupied by pre-authorized resources in time domain, starting symbol and number of symbols occupied by pre-authorized resources in the occupied time unit, resource block RB occupied by pre-authorized resources in frequency domain, antenna port, DMRS sequence initialization parameters, precoding and layer number indication, modulation coding scheme MCS and transmission block size TBS indication, sounding reference signal SRS resource indication, frequency domain hopping offset indication and path loss reference indication.

[0275] Optionally, for detailed description of the configuration of the pre-authorized resources, please refer to “Configuration of pre-authorized resources” in the above step 220.

[0276] For the first RNTI, optionally, the first RNTI includes a C-RNTI allocated by the target network device to the terminal device; optionally, the first RNTI includes a CS-RNTI allocated by the target network device to the terminal device.

[0277] For the timing adjustment indication information, optionally, the timing adjustment indication information is used to determine the TA value of the target cell. For example, the timing adjustment indication information is used to determine the TA value used by the terminal device when performing PUSCH transmission through the PUSCH resources in the target cell.

[0278] Optionally, for detailed description of the timing adjustment indication information, please refer to “Regarding the timing adjustment indication information” in the above step 220.

[0279] For the uplink scheduling timing offset value Koffset, optionally, the uplink scheduling timing offset value Koffset is used to determine at least one of the following scheduling timings: the timing of the terminal device performing PUSCH transmission to the first network device, and the timing of the terminal device performing PUCCH transmission to the first network device. Optionally, in this case, the uplink scheduling timing offset value Koffset is applied to the NTN network.

[0280] With respect to the uplink transmission waveform information, optionally, the uplink transmission waveform information is used to determine whether DFT precoding is used when the terminal device performs uplink transmission to the target network device (or whether the waveform used is an OFDM waveform or a DFT-S-OFDM waveform).

[0281] Optionally, for detailed description of the uplink transmission waveform information, please refer to “for uplink transmission waveform information” in the above step 220.

[0282] Step 640: The target network device sends a first switching message to the terminal device through the source network device, wherein the first switching message is used for the terminal device to access the target cell, and the target network device is a network device of the target cell.

[0283] In some optional embodiments, the first switching message carries resource configuration related to NR and / or NTN, and the terminal device accesses the target cell based on the access resources corresponding to the resource configuration.

[0284] In some optional embodiments, the first switching message includes a pre-authorized resource configuration, and the terminal device accesses the target cell according to the pre-authorized resource configuration; please refer to the following Figure 7 Illustrative embodiments are shown.

[0285] In some optional embodiments, the first switching message includes a PDCCH configuration, and the terminal device accesses the target cell according to the PDCCH configuration. For details, please refer to the following Figure 8 Illustrative embodiments are shown.

[0286] In some optional embodiments, the first switching message includes a PDCCH configuration and a pre-authorized resource configuration, and the terminal device accesses the target cell according to the pre-authorized resource configuration and the PDCCH configuration. For details, please refer to the following Fig. 9 Illustrative embodiments are shown.

[0287] In some optional embodiments, in the NTN scenario, for example, when the first switching message carries configuration information related to the NTN system; and / or the source network device is a network device in the NTN system; and / or the target network device is a network device in the NTN system, the terminal device accesses the target cell according to the first switching message, including: after the terminal device is synchronized to the target cell, accessing the target cell according to the first switching message.

[0288] Optionally, in the NTN scenario, the terminal device is synchronized to the target cell, including: the terminal device is synchronized to the target cell according to a first switching message, wherein the first switching message includes timing adjustment indication information, and the timing adjustment indication information is used to determine at least one of the following information: ephemeris information, a common timing value, an offset value of the common timing value, a change value of the offset value of the common timing value, a common transmission delay, a reference time t0, and a timer length.

[0289] In some optional embodiments, the terminal device is configured with a RACH-less switching process, or the first switching message does not include a configuration of a PRACH resource.

[0290] In some optional embodiments, the terminal device is configured not to use a switching process based on a random access channel, or to use a switching process without a random access channel, or to use a switching process based on an uplink data channel.

[0291] In summary, the first switching message is configured by the target network device and forwarded to the terminal device by the source network device. The terminal device accesses the target cell of the target network device according to the first switching message, thereby solving the resource configuration problem in the RACH-less switching process.

[0292] Figure 7 A flowchart of a resource configuration method for a switching process provided by another exemplary embodiment of the present application is shown, the method comprising:

[0293] Step 720, the target network device configures a first switching message, where the first switching message includes configuration of pre-authorized resources;

[0294] In some optional embodiments, the first switching message includes:

[0295] Configuration of pre-authorized resources;

[0296] Subcarrier spacing configuration;

[0297] First RNTI.

[0298] Regarding the configuration of pre-authorized resources, optionally, the configuration of pre-authorized resources is used to determine at least one of the following information: configuration ID of pre-authorized resources, frequency domain hopping indication, DMRS parameter configuration, frequency domain resource allocation type, uplink transmission waveform information, pre-configured uplink HARQ process number, period of pre-authorized resources, number of repetitions of transmission using pre-authorized resources, RV version corresponding to repeated transmission using pre-authorized resources, time unit occupied by pre-authorized resources in the time domain, starting symbol and number of symbols occupied by pre-authorized resources in the occupied time unit, RB occupied by pre-authorized resources in the frequency domain, antenna port, DMRS sequence initialization parameters, precoding and layer number indication, MCS and TBS indication, sounding reference signal SRS resource indication, frequency domain hopping offset indication, and path loss reference indication.

[0299] Optionally, for detailed description of the configuration of the pre-authorized resources, please refer to “Configuration of pre-authorized resources” in the above step 220.

[0300] With respect to the subcarrier spacing configuration, optionally, the subcarrier spacing configuration is used to determine a first subcarrier spacing, wherein the first subcarrier spacing is used by the terminal device to send PUSCH and / or PUCCH to the target cell.

[0301] For the first RNTI, optionally, the first RNTI includes a C-RNTI allocated by the target network device to the terminal device.

[0302] Step 740: The target network device sends a first switching message to the terminal device through the source network device, wherein the first switching message is used for the terminal device to access the target cell, and the target network device is a network device of the target cell.

[0303] In some optional embodiments, the terminal device is configured with a RACH-less switching process, or the first switching message does not include a configuration of a PRACH resource.

[0304] In some optional embodiments, the terminal device is configured not to use a switching process based on a random access channel, or to use a switching process without a random access channel, or to use a switching process based on an uplink data channel.

[0305] To summarize, the first switching message is configured by the target network device and forwarded to the terminal device through the source network device. The terminal device accesses the target cell of the target network device according to the first switching message. The first switching message includes the configuration of pre-authorized resources, which solves the resource configuration problem in the RACH-less switching process.

[0306] Figure 8 A flowchart of a resource configuration method for a switching process provided by another exemplary embodiment of the present application is shown, the method comprising:

[0307] Step 820, the target network device configures a first handover message, where the first handover message includes a PDCCH configuration;

[0308] In some optional embodiments, the first switching message includes:

[0309] PDCCH configuration;

[0310] Subcarrier spacing configuration;

[0311] Control resource collection configuration;

[0312] Search space set configuration;

[0313] First RNTI.

[0314] For PDCCH configuration, optionally, the PDCCH configuration is used to determine the control resource set configuration and / or search space set configuration associated with the PDCCH candidates of the target cell; optionally, the PDCCH configuration is used to indicate the control resource set ID and / or search space set ID associated with the PDCCH candidates when the terminal device monitors the PDCCH candidates of the target cell.

[0315] For subcarrier spacing configuration, optionally, the subcarrier spacing configuration is used to determine a first subcarrier spacing, wherein the first subcarrier spacing is used by the terminal device to send PUSCH and / or physical uplink control channel PUCCH to the target cell. Optionally, the subcarrier spacing configuration is used to determine a second subcarrier spacing, wherein the second subcarrier spacing is used by the terminal device to receive PDCCH and / or PDSCH sent by the target cell.

[0316] For the control resource set configuration, optionally, the control resource set configuration is used to indicate the control resource set configuration information associated with the control resource set ID and / or the search space set ID. Optionally, the control resource set configuration information is used to determine at least one of the following: the RBs occupied by the control resource set in the frequency domain, the number of symbols occupied by the control resource set in the time domain, and the quasi-co-location information associated with the control resource set.

[0317] Optionally, for detailed description of the control resource set configuration, please refer to “Configuration for the control resource set” in the above step 220.

[0318] For the search space set configuration, optionally, the search space set configuration is used to indicate the search space set configuration information associated with the search space set ID. Optionally, the search space set configuration information is used to determine at least one of the following: the time unit occupied by the search space set in the time domain, the symbol occupied by the search space set in the occupied time unit, the search space set type, the DCI format of the PDCCH candidate, the aggregation level associated with the PDCCH candidate, and the number of blind monitoring times corresponding to the aggregation level of the PDCCH candidate.

[0319] Optionally, for detailed description of the search space set configuration, please refer to “Configuration for the search space set” in the above step 220.

[0320] For the first RNTI, optionally, the first RNTI includes a C-RNTI allocated by the target network device to the terminal device.

[0321] Step 840: The target network device sends a first switching message to the terminal device through the source network device, wherein the first switching message is used for the terminal device to access the target cell, and the target network device is a network device of the target cell.

[0322] In some optional embodiments, the terminal device is configured with a RACH-less switching process, or the first switching message does not include a configuration of a PRACH resource.

[0323] In some optional embodiments, the terminal device is configured not to use a switching process based on a random access channel, or to use a switching process without a random access channel, or to use a switching process based on an uplink data channel.

[0324] To summarize, the first switching message is configured by the target network device and forwarded to the terminal device through the source network device. The terminal device accesses the target cell of the target network device according to the first switching message. The first switching message includes the PDCCH configuration, which solves the resource configuration problem in the RACH-less switching process.

[0325] Fig. 9 A flowchart of a resource configuration method for a switching process provided by another exemplary embodiment of the present application is shown, the method comprising:

[0326] Step 920: The target network device configures a first handover message, where the first handover message includes a PDCCH configuration and a pre-authorized resource configuration;

[0327] In some optional embodiments, the first switching message includes:

[0328] PDCCH configuration;

[0329] Configuration of pre-authorized resources;

[0330] Subcarrier spacing configuration;

[0331] Control resource collection configuration;

[0332] Search space set configuration;

[0333] First RNTI.

[0334] For PDCCH configuration, optionally, the PDCCH configuration is used to determine the control resource set configuration and / or search space set configuration associated with the PDCCH candidate of the target cell; optionally, the PDCCH configuration is used to indicate the control resource set ID and / or search space set ID associated with the PDCCH candidate when the terminal device monitors the PDCCH candidate of the target cell.

[0335] Regarding the configuration of pre-authorized resources, optionally, the configuration of pre-authorized resources is used to determine at least one of the following information: configuration ID of pre-authorized resources, frequency domain frequency hopping indication, DMRS parameter configuration, frequency domain resource allocation type, uplink transmission waveform information, number of pre-configured uplink HARQ processes, period of pre-authorized resources, number of repetitions of transmission using pre-authorized resources, and RV version corresponding to repeated transmission using pre-authorized resources.

[0336] Optionally, for detailed description of the configuration of the pre-authorized resources, please refer to “Configuration of pre-authorized resources” in the above step 220.

[0337] For subcarrier spacing configuration, optionally, the subcarrier spacing configuration is used to determine a first subcarrier spacing, wherein the first subcarrier spacing is used for the terminal device to send PUSCH and / or PUCCH to the target cell. Optionally, the subcarrier spacing configuration is used to determine a second subcarrier spacing, wherein the second subcarrier spacing is used for the terminal device to receive PDCCH and / or PDSCH sent by the target cell.

[0338] For the control resource set configuration, optionally, the control resource set configuration is used to indicate the control resource set configuration information associated with the control resource set ID and / or the search space set ID. Optionally, the control resource set configuration information is used to determine at least one of the following: the RBs occupied by the control resource set in the frequency domain, the number of symbols occupied by the control resource set in the time domain, and the quasi-co-location information associated with the control resource set.

[0339] Optionally, for detailed description of the control resource set configuration, please refer to “Configuration for the control resource set” in the above step 220.

[0340] For the search space set configuration, optionally, the search space set configuration is used to indicate the search space set configuration information associated with the search space set ID. Optionally, the search space set configuration information is used to determine at least one of the following: the time unit occupied by the search space set in the time domain, the symbol occupied by the search space set in the occupied time unit, the search space set type, the DCI format of the PDCCH candidate, the aggregation level associated with the PDCCH candidate, and the number of blind monitoring times corresponding to the aggregation level of the PDCCH candidate.

[0341] Optionally, for detailed description of the search space set configuration, please refer to “Configuration for the search space set” in the above step 220.

[0342] For the first RNTI, optionally, the first RNTI includes a C-RNTI allocated by the target network device to the terminal device; optionally, the first RNTI includes a CS-RNTI allocated by the target network device to the terminal device.

[0343] Step 940: The target network device sends a first switching message to the terminal device through the source network device, wherein the first switching message is used for the terminal device to access the target cell, and the target network device is a network device of the target cell.

[0344] In some optional embodiments, the terminal device is configured with a RACH-less switching process, or the first switching message does not include a configuration of a PRACH resource.

[0345] In some optional embodiments, the terminal device is configured not to use a switching process based on a random access channel, or to use a switching process without a random access channel, or to use a switching process based on an uplink data channel.

[0346] To summarize, the first switching message is configured by the target network device and forwarded to the terminal device through the source network device. The terminal device accesses the target cell of the target network device according to the first switching message. The first switching message includes the configuration of pre-authorized resources and PDCCH configuration, which solves the resource configuration problem in the RACH-less switching process.

[0347] Fig.10 A flowchart of a resource configuration method for a switching process provided by another exemplary embodiment of the present application is shown, the method comprising:

[0348] Step 1020, the source network device receives a first switching message configured by the target network device;

[0349] In some optional embodiments, the first switching message carries configuration information related to the NR system; and / or, the source network device is a network device in the NR system; and / or, the target network device is a network device in the NR system.

[0350] In some optional embodiments, the first switching message carries configuration information related to the NTN system; and / or the source network device is a network device in the NTN system; and / or the target network device is a network device in the NTN system. Optionally, the first switching message includes timing adjustment indication information and / or an uplink scheduling timing offset value Koffset.

[0351] Step 1040: The source network device sends a first switching message to the terminal device, wherein the first switching message is used for the terminal device to access the target cell, and the target network device is a network device of the target cell.

[0352] In some optional embodiments, the terminal device is configured with a RACH-less switching process, or the first switching message does not include a configuration of a PRACH resource.

[0353] In some optional embodiments, the terminal device is configured not to use a switching process based on a random access channel, or to use a switching process without a random access channel, or to use a switching process based on an uplink data channel.

[0354] In summary, the first switching message is configured by the target network device and forwarded to the terminal device by the source network device. The terminal device accesses the target cell of the target network device according to the first switching message, thereby solving the resource configuration problem in the RACH-less switching process.

[0355] Fig.11 A structural block diagram of a resource configuration device for a switching process provided by an exemplary embodiment of the present application is shown, and the device includes:

[0356] The receiving module 1110 is configured to receive a first switching message sent by a source network device, wherein the first switching message is configured by a target network device, and the target network device is a network device of a target cell;

[0357] The access module 1120 is configured to access the target cell according to the first switching message.

[0358] In some optional embodiments, the first switching message includes at least one of the following information:

[0359] Subcarrier spacing configuration;

[0360] PDCCH configuration;

[0361] Control resource collection configuration;

[0362] Search space set configuration;

[0363] Configuration of pre-authorized resources;

[0364] First RNTI;

[0365] Timing adjustment indication information;

[0366] Uplink scheduling timing offset value Koffset;

[0367] Uplink transmission waveform information.

[0368] In some optional embodiments, the first switching message includes configuration of pre-authorized resources.

[0369] In some optional embodiments, the access module 1120 is further configured to determine the pre-authorized resources of the target cell according to the configuration of the pre-authorized resources.

[0370] In some optional embodiments, the access module 1120 is further configured to access the target cell according to at least one resource in the pre-authorized resources.

[0371] In some optional embodiments, the access module 1120 is further configured to send a PUSCH to the target cell using the first available resource in the pre-authorized resources after being synchronized to the target cell.

[0372] In some optional embodiments, the first switching message also includes a subcarrier spacing configuration and a first RNTI.

[0373] In some optional embodiments, the configuration of the pre-authorization resource is used to determine at least one of the following information:

[0374] Configuration ID of the pre-authorized resource;

[0375] Frequency hopping indication in frequency domain;

[0376] DMRS parameter configuration;

[0377] Frequency domain resource allocation type;

[0378] Uplink transmission waveform information;

[0379] Pre-configure the number of uplink HARQ processes;

[0380] The period of pre-authorization resources;

[0381] The number of repetitions of transmission using pre-authorized resources;

[0382] Use pre-authorized resources to repeatedly transmit the corresponding RV version;

[0383] The time unit that the pre-authorized resources occupy in the time domain;

[0384] The starting symbol and number of symbols occupied by the pre-authorized resource in the occupied time unit;

[0385] RBs occupied by pre-granted resources in the frequency domain;

[0386] Antenna port;

[0387] DMRS sequence initialization parameters;

[0388] Precoding and layer number indication;

[0389] MCS and TBS instructions;

[0390] SRS resource indication;

[0391] Frequency domain frequency hopping offset indication;

[0392] Road loss reference indication.

[0393] In some optional embodiments, the first switching message includes a PDCCH configuration.

[0394] In some optional embodiments, the access module 1120 is further configured to monitor the PDCCH of the target cell through PDCCH configuration to access the target cell.

[0395] In some optional embodiments, the access module 1120 is further configured to monitor the PDCCH of the target cell through PDCCH configuration.

[0396] In some optional embodiments, the access module 1120 is further configured to receive uplink grant information via a PDCCH of the target cell.

[0397] In some optional embodiments, the access module 1120 is further configured to send a PUSCH to the target cell using resources scheduled by the uplink grant information.

[0398] In some optional embodiments, the first switching message also includes subcarrier spacing configuration, control resource set configuration, search space set configuration and a first RNTI.

[0399] In some optional embodiments, the PDCCH configuration is used to determine a control resource set configuration and / or a search space set configuration associated with a PDCCH candidate of the target cell.

[0400] In some optional embodiments, the first switching message includes PDCCH configuration and configuration of pre-granted resources.

[0401] In some optional embodiments, the access module 1120 is further configured to monitor the PDCCH of the target cell through the PDCCH configuration, and receive an activation authorization for the configuration of the pre-authorized resources through the PDCCH of the target cell.

[0402] In some optional embodiments, the access module 1120 is further configured to access the target cell according to resources determined by the activation authorization.

[0403] In some optional embodiments, the access module 1120 is further configured to determine the pre-authorized resources of the target cell according to the configuration of the activated authorization and pre-authorized resources.

[0404] In some optional embodiments, the access module 1120 is further configured to send a PUSCH to the target cell using the first available resource in the pre-authorized resources after being synchronized to the target cell.

[0405] In some optional embodiments, the first switching message also includes: subcarrier spacing configuration, control resource set configuration, search space set configuration and a first RNTI.

[0406] In some optional embodiments, the PDCCH configuration is used to determine a control resource set configuration and / or a search space set configuration associated with a PDCCH candidate of the target cell.

[0407] In some optional embodiments, the configuration of the pre-authorization resource is used to determine at least one of the following information:

[0408] Configuration ID of the pre-authorized resource;

[0409] Frequency hopping indication in frequency domain;

[0410] DMRS parameter configuration;

[0411] Frequency domain resource allocation type;

[0412] Uplink transmission waveform information;

[0413] Pre-configure the number of uplink HARQ processes;

[0414] The period of pre-authorization resources;

[0415] The number of repetitions of transmission using pre-authorized resources;

[0416] Use the pre-authorized resources to repeatedly transmit the corresponding RV version.

[0417] In some optional embodiments, the activation authorization is used to determine at least one of the following information:

[0418] The time unit that the pre-authorized resources occupy in the time domain;

[0419] The starting symbol and number of symbols occupied by the pre-authorized resource in the occupied time unit;

[0420] RBs occupied by pre-granted resources in the frequency domain;

[0421] Antenna port;

[0422] DMRS sequence initialization parameters;

[0423] Precoding and layer number indication;

[0424] MCS and TBS instructions;

[0425] SRS resource indication;

[0426] Frequency domain frequency hopping offset indication;

[0427] Road loss reference indication.

[0428] In some optional embodiments, the access module 1120 is further configured to monitor PDCCH candidates according to the first RNTI on a search space set determined according to the PDCCH configuration.

[0429] In some optional embodiments, the first RNTI includes a CS-RNTI allocated by the target network device to the terminal device.

[0430] In some optional embodiments, the first RNTI includes a C-RNTI allocated by the target network device to the terminal device.

[0431] In some optional embodiments, the PDCCH configuration is used to instruct the terminal device to monitor the PDCCH candidates of the target cell, and the control resource set ID and / or search space set ID associated with the PDCCH candidates.

[0432] In some optional embodiments, the control resource set configuration is used to indicate control resource set configuration information associated with the control resource set ID and / or the search space set ID;

[0433] The control resource set configuration information is used to determine at least one of the following:

[0434] Control the RBs occupied by the resource set in the frequency domain;

[0435] Control the number of symbols occupied by the resource set in the time domain;

[0436] Controls quasi-co-location information associated with a collection of resources.

[0437] In some optional embodiments, the search space set configuration is used to indicate the search space set configuration information associated with the search space set ID;

[0438] The search space set configuration information is used to determine at least one of the following:

[0439] The time unit occupied by the search space set in the time domain;

[0440] The search space sets the symbols occupied in the occupied time unit;

[0441] Search space collection type;

[0442] DCI format of PDCCH candidate;

[0443] The aggregation level associated with the PDCCH candidate;

[0444] The number of blind monitoring times corresponding to the aggregation level of the PDCCH candidates.

[0445] In some optional embodiments, the subcarrier spacing configuration is used to determine a first subcarrier spacing, wherein the first subcarrier spacing is used for the terminal device to send PUSCH and / or PUCCH to the target cell.

[0446] In some optional embodiments, the subcarrier spacing configuration is used to determine a second subcarrier spacing, wherein the second subcarrier spacing is used for the terminal device to receive the PDCCH and / or PDSCH sent by the target cell.

[0447] In some optional embodiments, the uplink transmission waveform information is used to determine whether the waveform used by the terminal device for uplink transmission to the target cell is a DFT-S-OFDM waveform or an OFDM waveform.

[0448] In some optional embodiments, the waveform of the PUSCH is determined according to uplink transmission waveform information; or,

[0449] The waveform of PUSCH is predefined.

[0450] In some optional embodiments, the source network device is a network device of a source cell, and both the source network device and the terminal device retain context information, and the context information is used for the terminal device to return to the source cell in case of a handover failure.

[0451] In some optional embodiments, the first switching message carries configuration information related to the NR system; and / or,

[0452] The source network device is a network device in the NR system; and / or,

[0453] The target network device is a network device in the NR system.

[0454] In some optional embodiments, the first switching message carries configuration information related to the NTN system; and / or,

[0455] The source network device is a network device in the NTN system; and / or,

[0456] The target network device is a network device in the NTN system.

[0457] In some optional embodiments, the first switching message includes timing adjustment indication information and / or uplink scheduling timing offset value Koffset.

[0458] In summary, the target network device configures the first switching message and forwards it to the above device through the source network device. The above device accesses the target cell of the target network device according to the first switching message, solving the resource configuration problem in the RACH-less switching process.

[0459] Fig.12 A structural block diagram of a resource configuration device for a switching process provided by another exemplary embodiment of the present application is shown, the device comprising:

[0460] Configuration module 1210, configured to configure a first switching message;

[0461] The sending module 1220 is used to send the first switching message to the terminal device through the source network device;

[0462] The first switching message is used for the terminal device to access the target cell, and the target network device is the network device of the target cell.

[0463] In some optional embodiments, the first switching message includes at least one of the following information:

[0464] Subcarrier spacing configuration;

[0465] PDCCH configuration;

[0466] Control resource collection configuration;

[0467] Search space set configuration;

[0468] Configuration of pre-authorized resources;

[0469] First RNTI;

[0470] Timing adjustment indication information;

[0471] Uplink scheduling timing offset value Koffset;

[0472] Uplink transmission waveform information.

[0473] In some optional embodiments, the first switching message includes configuration of pre-authorized resources.

[0474] In some optional embodiments, the first switching message also includes a subcarrier spacing configuration and a first RNTI.

[0475] In some optional embodiments, the configuration of the pre-authorization resource is used to determine at least one of the following information:

[0476] Configuration ID of the pre-authorized resource;

[0477] Frequency hopping indication in frequency domain;

[0478] DMRS parameter configuration;

[0479] Frequency domain resource allocation type;

[0480] Uplink transmission waveform information;

[0481] Pre-configure the number of uplink HARQ processes;

[0482] The period of pre-authorization resources;

[0483] The number of repetitions of transmission using pre-authorized resources;

[0484] Use pre-authorized resources to repeatedly transmit the corresponding RV version;

[0485] The time unit that the pre-authorized resources occupy in the time domain;

[0486] The starting symbol and number of symbols occupied by the pre-authorized resource in the occupied time unit;

[0487] RBs occupied by pre-granted resources in the frequency domain;

[0488] Antenna port;

[0489] DMRS sequence initialization parameters;

[0490] Precoding and layer number indication;

[0491] MCS and TBS instructions;

[0492] SRS resource indication;

[0493] Frequency domain frequency hopping offset indication;

[0494] Road loss reference indication.

[0495] In some optional embodiments, the first switching message includes a PDCCH configuration.

[0496] In some optional embodiments, the first switching message also includes subcarrier spacing configuration, control resource set configuration, search space set configuration and a first RNTI.

[0497] In some optional embodiments, the PDCCH configuration is used to determine a control resource set configuration and / or a search space set configuration associated with a PDCCH candidate of the target cell.

[0498] In some optional embodiments, the first switching message includes PDCCH configuration and configuration of pre-granted resources.

[0499] In some optional embodiments, the first switching message also includes: subcarrier spacing configuration, control resource set configuration, search space set configuration and a first RNTI.

[0500] In some optional embodiments, the PDCCH configuration is used to determine a control resource set configuration and / or a search space set configuration associated with a PDCCH candidate of the target cell.

[0501] In some optional embodiments, the configuration of the pre-authorization resource is used to determine at least one of the following information:

[0502] Configuration ID of the pre-authorized resource;

[0503] Frequency hopping indication in frequency domain;

[0504] DMRS parameter configuration;

[0505] Frequency domain resource allocation type;

[0506] Uplink transmission waveform information;

[0507] Pre-configure the number of uplink HARQ processes;

[0508] The period of pre-authorization resources;

[0509] The number of repetitions of transmission using pre-authorized resources;

[0510] The corresponding redundant RV version is repeatedly transmitted using the pre-authorized resources.

[0511] In some optional embodiments, the first RNTI includes a CS-RNTI allocated by the target network device to the terminal device.

[0512] In some optional embodiments, the first RNTI includes a C-RNTI allocated by the target network device to the terminal device.

[0513] In some optional embodiments, the PDCCH configuration is used to instruct the terminal device to monitor the PDCCH candidates of the target cell, and the control resource set ID and / or search space set ID associated with the PDCCH candidates.

[0514] In some optional embodiments, the control resource set configuration is used to indicate control resource set configuration information associated with the control resource set ID and / or the search space set ID;

[0515] The control resource set configuration information is used to determine at least one of the following:

[0516] Control the RBs occupied by the resource set in the frequency domain;

[0517] Control the number of symbols occupied by the resource set in the time domain;

[0518] Controls quasi-co-location information associated with a collection of resources.

[0519] In some optional embodiments, the search space set configuration is used to indicate the search space set configuration information associated with the search space set ID;

[0520] The search space set configuration information is used to determine at least one of the following:

[0521] The time unit occupied by the search space set in the time domain;

[0522] The search space sets the symbols occupied in the occupied time unit;

[0523] Search space collection type;

[0524] DCI format of PDCCH candidate;

[0525] The aggregation level associated with the PDCCH candidate;

[0526] The number of blind monitoring times corresponding to the aggregation level of the PDCCH candidates.

[0527] In some optional embodiments, the subcarrier spacing configuration is used to determine a first subcarrier spacing, wherein the first subcarrier spacing is used for the terminal device to send PUSCH and / or PUCCH to the target cell.

[0528] In some optional embodiments, the subcarrier spacing configuration is used to determine a second subcarrier spacing, wherein the second subcarrier spacing is used for the terminal device to receive the PDCCH and / or PDSCH sent by the target cell.

[0529] In some optional embodiments, the uplink transmission waveform information is used to determine the waveform when the terminal device performs uplink transmission to the target cell.

[0530] In some optional embodiments, the uplink transmission waveform information is used to determine whether the waveform used by the terminal device for uplink transmission to the target cell is a DFT-S-OFDM waveform or an OFDM waveform.

[0531] In some optional embodiments, the first switching message carries configuration information related to the new radio interface NR system; and / or,

[0532] The source network device is a network device in the NR system; and / or,

[0533] The target network device is a network device in the NR system.

[0534] In some optional embodiments, the first switching message carries configuration information related to the non-terrestrial communication network equipment NTN system; and / or,

[0535] The source network device is a network device in the NTN system; and / or,

[0536] The target network device is a network device in the NTN system.

[0537] In some optional embodiments, the first switching message includes timing adjustment indication information and / or uplink scheduling timing offset value Koffset.

[0538] In summary, the first switching message is configured through the above device and forwarded to the terminal device through the source network device. The terminal device accesses the target cell of the target network device according to the first switching message, solving the resource configuration problem in the RACH-less switching process.

[0539] Fig.13 A structural block diagram of a resource configuration device for a switching process provided by another exemplary embodiment of the present application is shown, the device comprising:

[0540] The receiving module 1310 is used to receive a first switching message configured by a target network device;

[0541] The sending module 1320 is used to send the first switching message to the terminal device;

[0542] The first switching message is used for the terminal device to access the target cell, and the target network device is the network device of the target cell.

[0543] In some optional embodiments, the source network device is a network device of a source cell, and both the source network device and the terminal device retain context information, and the context information is used for the terminal device to return to the source cell in case of a handover failure.

[0544] In summary, the target network device configures the first switching message and forwards it to the terminal device through the above device. The terminal device accesses the target cell of the target network device according to the first switching message, thereby solving the resource configuration problem in the RACH-less switching process.

[0545] Fig.14 A schematic diagram of the structure of a communication device (UE or network device) provided by an exemplary embodiment of the present application is shown. The communication device includes: a processor 1401, a receiver 1402, a transmitter 1403, a memory 1404 and a bus 1405.

[0546] The processor 1401 includes one or more processing cores. The processor 1401 executes various functional applications and information processing by running software programs and modules.

[0547] The receiver 1402 and the transmitter 1403 may be implemented as a communication component, which may be a communication chip.

[0548] The memory 1404 is connected to the processor 1401 via a bus 1405 .

[0549] The memory 1404 may be used to store at least one instruction, and the processor 1401 may be used to execute the at least one instruction to implement each step in the above method embodiment.

[0550] In addition, the memory 1404 can be implemented by any type of volatile or non-volatile storage device or a combination thereof. The volatile or non-volatile storage device includes but is not limited to: a magnetic disk or an optical disk, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a static random-access memory (SRAM), a read-only memory (ROM), a magnetic memory, a flash memory, and a programmable read-only memory (PROM).

[0551] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory including instructions, and the instructions can be executed by a processor of a communication device to complete the above-mentioned coverage enhancement level determination method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a compact disc read-only memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, etc.

[0552] A non-transitory computer-readable storage medium, when instructions in the non-transitory computer storage medium are executed by a processor of a communication device, enables the communication device to execute the resource configuration method of the above-mentioned switching process.

[0553] An exemplary embodiment of the present application also provides a network device, which includes: a processor; a transceiver connected to the processor; wherein the processor is configured to load and execute executable instructions to implement the resource configuration method of the switching process provided by the above-mentioned various method embodiments.

[0554] An exemplary embodiment of the present application further provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip is running, it can implement the resource configuration method of the switching process provided by the above-mentioned various method embodiments.

[0555] An exemplary embodiment of the present application also provides a computer-readable storage medium, in which at least one instruction, at least one program, a code set or an instruction set is stored. The at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement the resource configuration method of the switching process provided by the above-mentioned various method embodiments.

[0556] It should be understood that the "plurality" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0557] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0558] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A resource configuration method for a switching process, characterized in that: The method comprises: The terminal device receives a first switching message sent by a source network device, wherein the first switching message is configured by a target network device, and the target network device is a network device of a target cell; The terminal device accesses the target cell according to the first switching message.

2. The method according to claim 1, characterized in that The first switching message includes at least one of the following information: Subcarrier spacing configuration; Physical downlink control channel PDCCH configuration; Control resource collection configuration; Search space set configuration; Configuration of pre-authorized resources; A first wireless network device temporary identifier RNTI; Timing adjustment indication information; Uplink scheduling timing offset value Koffset; Uplink transmission waveform information.

3. The method according to claim 2, characterized in that The first handover message includes the configuration of the pre-authorized resources; The terminal device accessing the target cell according to the first switching message includes: The terminal device determines the pre-authorized resources of the target cell according to the configuration of the pre-authorized resources; The terminal device accesses the target cell according to at least one resource in the pre-authorized resources.

4. The method according to claim 3, characterized in that: The terminal device accesses the target cell according to at least one resource in the pre-authorized resources, including: After being synchronized to the target cell, the terminal device uses the first available resource in the pre-authorized resources to send a physical uplink shared channel PUSCH to the target cell.

5. The method according to claim 2, characterized in that: The first handover message includes the PDCCH configuration; The terminal device accessing the target cell according to the first switching message includes: The terminal device monitors the PDCCH of the target cell through the PDCCH configuration to access the target cell.

6. The method according to claim 5, characterized in that The terminal device monitors the PDCCH of the target cell through the PDCCH configuration to access the target cell, including: The terminal device monitors the PDCCH of the target cell through the PDCCH configuration; The terminal device receives uplink authorization information through the PDCCH of the target cell; The terminal device sends PUSCH to the target cell using the resources scheduled by the uplink authorization information.

7. The method according to claim 5 or 6, characterized in that: The PDCCH configuration is used to determine a control resource set configuration and / or a search space set configuration associated with a PDCCH candidate of the target cell.

8. The method according to claim 5, characterized in that The first handover message includes the first RNTI, and the terminal device monitors the PDCCH of the target cell through the PDCCH configuration, including: The terminal device monitors PDCCH candidates according to the first RNTI on a search space set determined according to the PDCCH configuration.

9. The method according to any one of claims 2 to 8, characterized in that: The first RNTI includes a cell radio network equipment temporary identifier C-RNTI allocated by the target network device to the terminal device.

10. The method according to any one of claims 2 to 9, characterized in that: The control resource set configuration is used to indicate control resource set configuration information associated with the control resource set ID and / or the search space set ID; The control resource set configuration information is used to determine at least one of the following: Control the RBs occupied by the resource set in the frequency domain; The number of symbols occupied by the control resource set in the time domain; Quasi-co-location information associated with the control resource set.

11. The method according to any one of claims 2 to 10, characterized in that: The subcarrier spacing configuration is used to determine a first subcarrier spacing, wherein the first subcarrier spacing is used by the terminal device to send a PUSCH and / or a physical uplink control channel PUCCH to the target cell.

12. The method according to any one of claims 2 to 11, characterized in that: The subcarrier spacing configuration is used to determine a second subcarrier spacing, wherein the second subcarrier spacing is used by the terminal device to receive the PDCCH and / or physical downlink shared channel PDSCH sent by the target cell.

13. The method according to any one of claims 2 to 12, characterized in that: The uplink transmission waveform information is used to determine whether the waveform of the terminal device when performing uplink transmission to the target cell is a discrete Fourier transform-spread spectrum-orthogonal frequency division multiplexing DFT-S-OFDM waveform or an orthogonal frequency division multiplexing OFDM waveform.

14. A resource configuration method for a switching process, characterized in that: The method comprises: The target network device configures a first switching message; The target network device sends the first switching message to the terminal device through the source network device; The first switching message is used for the terminal device to access the target cell, and the target network device is the network device of the target cell.

15. The method according to claim 14, characterized in that The first switching message includes at least one of the following information: Subcarrier spacing configuration; Physical downlink control channel PDCCH configuration; Control resource collection configuration; Search space set configuration; Configuration of pre-authorized resources; A first wireless network device temporary identifier RNTI; Timing adjustment indication information; Uplink scheduling timing offset value Koffset; Uplink transmission waveform information.

16. The method according to claim 15, characterized in that The first handover message includes the configuration of the pre-authorized resources.

17. The method according to claim 15, characterized in that The first handover message includes the PDCCH configuration.

18. The method according to claim 17, characterized in that The PDCCH configuration is used to determine a control resource set configuration and / or a search space set configuration associated with a PDCCH candidate of the target cell.

19. The method according to any one of claims 15 to 18, characterized in that: The first RNTI includes a cell radio network equipment temporary identifier C-RNTI allocated by the target network device to the terminal device.

20. The method according to any one of claims 15 to 19, characterized in that: The control resource set configuration is used to indicate control resource set configuration information associated with the control resource set ID and / or the search space set ID; The control resource set configuration information is used to determine at least one of the following: Control the RBs occupied by the resource set in the frequency domain; The number of symbols occupied by the control resource set in the time domain; Quasi-co-location information associated with the control resource set.

21. The method according to any one of claims 15 to 20, characterized in that: The subcarrier spacing configuration is used to determine a first subcarrier spacing, wherein the first subcarrier spacing is used by the terminal device to send a PUSCH and / or a physical uplink control channel PUCCH to the target cell.

22. The method according to any one of claims 15 to 21, characterized in that: The subcarrier spacing configuration is used to determine a second subcarrier spacing, wherein the second subcarrier spacing is used by the terminal device to receive the PDCCH and / or physical downlink shared channel PDSCH sent by the target cell.

23. The method according to any one of claims 15 to 22, characterized in that: The uplink transmission waveform information is used to determine whether the waveform of the terminal device when performing uplink transmission to the target cell is a discrete Fourier transform-spread spectrum-orthogonal frequency division multiplexing DFT-S-OFDM waveform or an orthogonal frequency division multiplexing OFDM waveform.

24. A resource configuration method for a switching process, characterized in that: The method comprises: The source network device receives a first switching message configured by the target network device; The source network device sends the first switching message to the terminal device; The first switching message is used for the terminal device to access the target cell, and the target network device is the network device of the target cell.

25. A resource configuration device for a switching process, characterized in that: The device comprises: A receiving module, configured to receive a first switching message sent by a source network device, wherein the first switching message is configured by a target network device, and the target network device is a network device of a target cell; An access module is used to access the target cell according to the first switching message.

26. A resource configuration device for a switching process, characterized in that: The device comprises: A configuration module, used to configure a first switching message; A sending module, used for sending the first switching message to the terminal device through the source network device; The first switching message is used for the terminal device to access the target cell, and the target network device is the network device of the target cell.

27. A resource configuration device for a switching process, characterized in that: The device comprises: A receiving module, configured to receive a first switching message configured by a target network device; A sending module, used for sending the first switching message to a terminal device; The first switching message is used for the terminal device to access the target cell, and the target network device is the network device of the target cell.

28. A communication device, characterized in that: The communication device includes: a processor and a memory, the memory storing a computer program, the computer program being loaded and executed by the processor to implement the resource configuration method of the switching process as described in any one of claims 1 to 13, or any one of claims 14 to 23, or claim 24.

29. A chip, characterized in that: The chip includes a programmable logic circuit and / or program instructions, and when the chip is running, it implements the resource configuration method of the switching process described in any one of claims 1 to 13, or any one of claims 14 to 23, or claim 24.

30. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, which is used for execution by a processor to implement the resource configuration method of the switching process described in any one of claims 1 to 13, or any one of claims 14 to 23, or claim 24.

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