Wireless communication methods, terminal devices and network devices

Abstract

Provided are wireless communication methods, terminal devices and network devices. A method comprises: a terminal device sending first indication information to a network device, the first indication information being used for indicating whether the terminal device supports mobility from a first communication standard to a second communication standard, and the first communication standard being different from the second communication standard. In the embodiments of the present application, cell reselection / selection and / or cell redirection can be performed on the basis of whether the terminal device supports the mobility, which is conducive to improving the probability of the terminal device accessing a suitable frequency.

Description

Wireless communication methods, terminal equipment and network equipment Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a wireless communication method, terminal device, and network device. Background Technology

[0002] Currently, some discussions have proposed supporting the mobility of terminal devices from a first communication standard to a second communication standard. Correspondingly, network devices will configure the terminal devices with mobility-related settings. However, this configuration method is not reasonable. For example, some terminal devices cannot support the aforementioned mobility, but the network device still configures the terminal devices with mobility-related information, which may result in the terminal devices being unable to select a suitable frequency for access. Summary of the Invention

[0003] This application provides a wireless communication method, terminal device, and network device. The various aspects covered by this application are described below.

[0004] In a first aspect, a wireless communication method is provided, comprising: a terminal device sending first indication information to a network device, the first indication information being used to indicate whether the terminal device supports mobility from a first communication standard to a second communication standard, wherein the first communication standard is different from the second communication standard.

[0005] In a second aspect, a wireless communication method is provided, comprising: a network device receiving first indication information sent by a terminal device, the first indication information being used to indicate whether the terminal device supports mobility from a first communication standard to a second communication standard, wherein the first communication standard is different from the second communication standard.

[0006] Thirdly, a wireless communication method is provided, comprising: a terminal device performing cell reselection or redirection based on first information, wherein the first information is used to indicate whether the terminal device supports mobility from a first communication standard to a second communication standard, wherein the first communication standard is different from the second communication standard.

[0007] Fourthly, a wireless communication method is provided, comprising: a network device sending first configuration information associated with mobility to a terminal device, the mobility being used to indicate the mobility of the terminal device from a first communication standard to a second communication standard.

[0008] Fifthly, a terminal device is provided, comprising: a sending unit, configured to send first indication information to a network device, the first indication information being configured to indicate whether the terminal device supports mobility from a first communication standard to a second communication standard, wherein the first communication standard is different from the second communication standard.

[0009] In a sixth aspect, a network device is provided, comprising: a receiving unit for receiving first indication information sent by a terminal device, the first indication information being used to indicate whether the terminal device supports mobility from a first communication standard to a second communication standard, wherein the first communication standard is different from the second communication standard.

[0010] In a seventh aspect, a terminal device is provided, comprising: a processing unit configured to perform cell reselection or redirection based on first information, wherein the first information is configured to indicate whether the terminal device supports mobility from a first communication standard to a second communication standard, wherein the first communication standard is different from the second communication standard.

[0011] Eighthly, a network device is provided, comprising: a transmitting unit for transmitting first configuration information associated with mobility to a terminal device, the mobility being used to indicate the mobility of the terminal device from a first communication standard to a second communication standard.

[0012] Ninthly, a terminal device is provided, including a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the terminal device to perform some or all of the steps of the methods described in the preceding aspects.

[0013] In a tenth aspect, a network device is provided, including a processor, a memory, and a transceiver, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the network device to perform some or all of the steps of the methods described in the foregoing aspects.

[0014] Eleventhly, embodiments of this application provide a communication system including the aforementioned terminal device and / or network device. In another possible design, the system may further include other devices that interact with the terminal device or network device as described in the embodiments of this application.

[0015] In a twelfth aspect, embodiments of this application provide a computer-readable storage medium storing a computer program that causes a communication device (e.g., a terminal device or a network device) to perform some or all of the steps in the methods described above.

[0016] In a thirteenth aspect, embodiments of this application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program operable to cause a communication device (e.g., a terminal device or a network device) to perform some or all of the steps in the methods described in the foregoing aspects. In some implementations, the computer program product may be a software installation package.

[0017] In a fourteenth aspect, embodiments of this application provide a chip including a memory and a processor, the processor being able to call and run a computer program from the memory to implement some or all of the steps described in the methods of the foregoing aspects.

[0018] In the embodiments of this application, cell reselection / selection and / or cell redirection can be performed based on whether the terminal device supports the above-mentioned mobility, which helps to increase the probability of the terminal device accessing a suitable frequency point. Attached Figure Description

[0019] Figure 1 shows the wireless communication system 100 used in an embodiment of this application.

[0020] Figure 2 is a schematic flowchart of a wireless communication method according to an embodiment of this application.

[0021] Figure 3 is a schematic flowchart of a wireless communication method according to another embodiment of this application.

[0022] Figure 4 is a schematic diagram of a terminal device according to an embodiment of this application.

[0023] Figure 5 is a schematic diagram of a network device according to an embodiment of this application.

[0024] Figure 6 is a schematic diagram of a terminal device according to another embodiment of this application.

[0025] Figure 7 is a schematic diagram of a network device according to another embodiment of this application.

[0026] Figure 8 is a schematic structural diagram of a communication device according to an embodiment of this application. Detailed Implementation

[0027] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0028] Figure 1 illustrates a wireless communication system 100 according to an embodiment of this application. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide communication coverage for a specific geographical area and may communicate with the terminal device 120 located within that coverage area.

[0029] Figure 1 illustrates an exemplary network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices, and each network device may include other terminal devices within its coverage area. This application embodiment does not limit this.

[0030] Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment.

[0031] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as: 5th generation (5G) systems or new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc. The technical solutions provided in this application can also be applied to future communication systems, such as 6th generation mobile communication systems, satellite communication systems, and so on.

[0032] The terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. The terminal devices in the embodiments of this application can be mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes, etc. Optionally, the UE can act as a base station. For example, the UE can act as a scheduling entity, providing sidelink signals between UEs in V2X or D2D, etc. For example, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices communicate without relaying communication signals through a base station.

[0033] The network device in this application embodiment can be a device used to communicate with a terminal device. This network device can also be called an access network device or a wireless access network device, such as a base station. In this application embodiment, the network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master MeNB, auxiliary SeNB, multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or similar, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. Base stations can also be mobile switching centers, devices that perform base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, network-side devices in 6G networks, and devices that perform base station functions in future communication systems. Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0034] 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 depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0035] In some deployments, the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.

[0036] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0037] It should be understood that all or part of the functions of the communication device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (e.g., a cloud platform).

[0038] Community Selection

[0039] When a terminal device selects a new PLMN or SNPN, it executes a cell selection process. If the terminal device does not have previously stored frequency information, it triggers an initial cell selection process. During this initial process, the terminal device scans all RF channels in the NR bands to find a suitable cell. On each frequency, the terminal device searches only the strongest cell; once a suitable cell is found, it can select it. If the terminal device has stored frequency information and cell parameters, it can directly select a suitable cell upon discovery. If no suitable cell is found, the terminal device triggers the initial cell selection process.

[0040] In some implementations, the S criterion for cell selection satisfies the following conditions: Srxlev > 0 and Squal > 0, where Srxlev = Qrxlevmeas – (Qrxlevmin + Qrxlevminoffset) – Pcompensation – Qoffsettemp, and Squal = Qqualmeas – (Qqualmin + Qqualminoffset) – Qoffsettemp.

[0041] Wherein, Srxlev represents the cell selection receive level value; Qrxlevmeas represents the RSRP value of the target cell measured by the terminal equipment; Qrxlevmin represents the minimum receive strength requirement in the cell; Qrxlevminoffset represents the offset when searching for a higher priority PLMN while camped on the VPLMN; Pcompensation represents the maximum value of (PEMAX – PUMAX), where PEMAX represents the maximum uplink transmit power allowed by the terminal equipment in the cell, and PUMAX represents the maximum uplink transmit power determined by the terminal capability; Squal represents the receive signal quality of the cell selection; Qqualmeas represents the cell signal quality value measured by the terminal equipment; Qqualmin represents the minimum receive signal quality threshold required by the cell; Qqualminoffset represents the minimum receive signal quality offset value, which is only used when the terminal equipment is camped on the VPLMN and periodically searches for a higher priority PLMN; Qoffsettemp represents the temporary offset.

[0042] Community re-election

[0043] The absolute priority of different NR frequencies or inter-RAT frequencies is sent to the terminal device via system information or a radio resource control release (RRCRelease) message, or inherited from another RAT during inter-RAT cell reselection. When the terminal device is camped on any cell, it should only apply the priority provided by the current cell via system messages. The terminal device retains priority information provided via dedicated signaling. When the terminal device is in normal camping mode and only has dedicated frequency priorities other than the current frequency, it should consider the current frequency as the lowest priority. When the RRCRelease message received by the terminal device contains the parameter "depriorityReq", the terminal device should consider the current frequency and the stored frequencies or all NR frequencies as the lowest priority frequencies.

[0044] When a terminal device enters a different RRC state, or its dedicated priority timer (T320) expires, or the RRC Release message received by the terminal device lacks the parameter "cellReselectionPriorities," or the NAS request performs PLMN selection or SNPN selection, the terminal device maps and removes the priority provided via dedicated signaling. The terminal device cannot consider cells in the exclude-listed list as candidates for cell reselection. The terminal device should only consider cells in the allow-listed list as candidates for cell reselection.

[0045] Measurement criteria for cell reselection

[0046] If the serving cell satisfies Srxlev > SIntraSearchP and Squal > SIntraSearchQ, where SIntraSearchP represents the threshold value for reference signal received power (RSRP) used to initiate co-channel measurements, and SIntraSearchQ represents the threshold value for reference signal receiving quality (RSRQ) used to initiate co-channel measurements, the terminal device does not perform co-channel measurements; otherwise, the terminal device needs to perform co-channel measurements.

[0047] For earth-fixed cells in non-terrestrial networks (NTNs), if the terminal device supports location-based measurements and the parameters "distanceThresh" and "referenceLocation" are broadcast in SIB19, in addition to the above conditions, the terminal device may not perform co-frequency cell measurements if the distance between the terminal device and the serving cell reference point is lower than the parameter "distanceThresh". Otherwise, the terminal device needs to perform co-frequency measurements. For earth-moving cells in NTNs, if the terminal device supports location-based measurements and the parameters "distanceThresh" and "movingReferenceLocation" are broadcast in system information block (SIB)19, in addition to the above conditions, the terminal device may not perform co-frequency cell measurements if the distance between the terminal device and the serving cell reference point is lower than "distanceThresh". Otherwise, the terminal device needs to perform co-frequency measurements.

[0048] For high-priority frequencies, the terminal device needs to perform inter-frequency or inter-RAT frequency measurements. For frequencies of the same or lower priority, when the serving cell satisfies Srxlev > SnonIntraSearchP and Squal > SnonIntraSearchQ, where SnonIntraSearchP represents the received signal level threshold of the serving cell and SnonIntraSearchQ represents the signal quality threshold of the serving cell, the terminal device does not perform measurements on cells of the same or lower priority frequencies. Otherwise, the terminal device needs to perform measurements on cells of the same or lower priority frequencies. For NTN earth-fixed cells, if the terminal device supports location-based measurements and distanceThresh and referenceLocation are broadcast in SIB19, in addition to meeting the above conditions, if the distance between the terminal device and the reference point of the serving cell is lower than the parameter "distanceThresh", the terminal device may not perform measurements on cells of the same or lower priority frequencies. Otherwise, the terminal device needs to perform measurements on cells of the same or lower priority frequencies. For NTN earth-moving cells, if the terminal device supports location-based measurements and the parameters "distanceThresh" and "movingReferenceLocation" are broadcast in SIB19, in addition to meeting the above conditions, the following must also be met: if the distance between the terminal device and the serving cell reference point is lower than the parameter "distanceThresh", the terminal device may not perform cell measurements for cells of the same or lower priority frequencies. Otherwise, the terminal device needs to perform measurements for cells of the same or lower priority frequencies.

[0049] If relaxed measurement is configured in SIB2 and the terminal device supports relaxed measurement, the terminal device can perform relaxed measurement.

[0050] For terminal devices camped in NTN cells, if skipping terrestrial network (TN) measurements is supported, and the terminal device has already obtained location information and the system message broadcasts the parameters "coverageAreaInfoList" and "tn-AreaIdList", the terminal device may not perform TN frequency measurements if it is not covered by the frequency provided by the parameter "tn-AreaIdList".

[0051] When the terminal device supports time-based measurement and the parameter "t-service" is broadcast in SIB19, the terminal device needs to perform intra-frequency, inter-frequency or inter-RAT measurement before the parameter "t-service", regardless of the distance between the terminal device and the serving cell reference point or whether the serving cell satisfies Srxlev > SIntraSearchP and Squal > SIntraSearchQ, or Srxlev > SnonIntraSearchP and Squal > SnonIntraSearchQ. The terminal device needs to perform measurement on the high-priority frequency regardless of how much remaining serving time there is in the serving cell.

[0052] NR Inter-frequency and inter-RAT cell reselection criteria

[0053] If the system message broadcasts the parameter "threshServingLowQ" and the terminal device has camped on the current serving cell for more than 1 second, the terminal device selects a high-priority cell if the following conditions are met: the high-priority cell satisfies Squal > ThreshX,HighQ within a period of time TreselectionRAT, where ThreshX,HighQ represents a threshold value used to determine whether the signal quality of the high-priority neighbor cell meets the reselection condition. Otherwise, the terminal device selects a high-priority cell if the following conditions are met: the high-priority cell satisfies Srxlev > ThreshX,HighP within a period of time TreselectionRAT and the terminal device has camped on the current serving cell for more than 1 second.

[0054] If the system message broadcasts threshServingLowQ and the terminal device has camped on the current serving cell for more than 1 second, the terminal device selects a low-priority cell if the following conditions are met: the serving cell Squal < ThreshServing,LowQ and the low-priority cell satisfies Squal > ThreshX,HighQ within a period of time TreselectionRAT, where ThreshServing,LowQ represents a signal quality threshold for reselection to a low-priority cell, used to determine whether the signal quality of the current serving cell is low enough. Otherwise, the terminal device selects a low-priority cell if the following conditions are met: the serving cell Srxlev < ThreshServing,LowP and the low-priority cell satisfies Srxlev > ThreshX,LowP within a period of time "TreselectionRAT" and the terminal device has camped on the current serving cell for more than 1 second.

[0055] When multiple cells meet the above criteria, the terminal device shall reselect the cell as follows:

[0056] -If the highest priority frequency is the NR frequency, the best ranked cell on that frequency needs to meet the following co-frequency cell reselection criteria.

[0057] - If the highest priority frequency is from another RAT, the best ranked cell on that frequency meets the criteria of that RAT.

[0058] Cell reselection criteria for cells with the same priority or lower priority frequencies:

[0059] The cell ranking criteria for serving cell Rs and neighboring cells Rn are defined as follows:

[0060] Rs=Qmeas,s+Qhyst-Qoffsettemp

[0061] Rn=Qmeas,n-Qoffset-Qoffsettemp

[0062] The terminal device should rank all cells that meet the S criterion according to the R criterion described above. If the "rangeToBestCell" parameter is not configured, the terminal device will perform cell reselection to the highest-ranked cell. If this cell is unsuitable, the terminal device will not consider any cells on that frequency for 300 seconds. If "rangeToBestCell" is configured, the terminal device should perform cell reselection to the cell with the most beams exceeding the threshold. If multiple such cells exist, the terminal device will reselect to the highest-ranked cell.

[0063] In all the above scenarios, it is necessary to meet the following conditions: the new cell meets the reselection criteria for a period of time (TreselectionRAT) and the terminal device has been camped on the current cell for more than 1 second.

[0064] Currently, some discussions have proposed supporting the mobility of terminal devices from a first communication standard to a second communication standard. Correspondingly, network devices will configure the terminal devices with mobility-related settings. However, this configuration method is not reasonable. For example, some terminal devices cannot support the aforementioned mobility, but the network device still configures the terminal devices with mobility-related information, which may result in the terminal devices being unable to select a suitable frequency for access.

[0065] Assume the aforementioned mobility includes the mobility of the terminal device between LTE and NR NTN frequency points. That is, the terminal device can reselect (or redirect) from LTE frequency points to NR NTN frequency points based on measurement results. In some scenarios, network devices can configure higher frequency point priorities for NR NTN frequency points so that terminal devices can preferentially access NR NTN frequency points. However, different terminal devices have different capabilities; for terminal devices that do not support the aforementioned mobility, they cannot preferentially access NR NTN frequency points based on the frequency point priorities configured by the network device.

[0066] Therefore, to address the above-mentioned problems, this application provides a wireless communication method in which cell reselection / selection and / or cell redirection can be performed based on whether the terminal device supports the aforementioned mobility, which helps the terminal device access a suitable frequency point.

[0067] The solutions of this application's embodiments are described below with reference to Embodiment 1 and Embodiment 2. In Embodiment 1, the network device adjusts relevant configuration information (described below using the first configuration information as an example) based on whether the terminal device supports the aforementioned mobility, which helps the terminal device access a suitable frequency point. In Embodiment 2, the terminal device can autonomously select a suitable frequency point for access based on whether the terminal device supports the aforementioned mobility, thereby increasing the probability of the terminal device accessing a suitable frequency point.

[0068] Example 1

[0069] Figure 2 is a schematic flowchart of a wireless communication method according to an embodiment of this application. The method shown in Figure 2 includes step S210.

[0070] In step S210, the terminal device sends a first indication information to the network device. The first indication information is used to indicate whether the terminal device supports mobility from a first communication standard to a second communication standard, where the first communication standard is different from the second communication standard.

[0071] In this embodiment of the application, the terminal device can send first indication information to the network device to indicate whether the terminal device supports the above-mentioned mobility, which helps the network device to configure the terminal device based on the first indication information, thereby increasing the probability that the terminal device can access a suitable frequency point.

[0072] In some implementations, the first indication information is used to indicate whether the terminal device supports mobility from a first communication standard to a second communication standard. For example, the first indication information is used to indicate whether the terminal device supports moving from a first communication standard to a second communication standard. Therefore, in some scenarios, the first indication information is also called terminal capability information, or UE capability information.

[0073] In some implementations, the first communication standard includes LTE, and / or the second communication standard includes NR NTN. Of course, in the embodiments of this application, the first communication standard may also include LTE, and correspondingly, the second communication standard includes the communication standard of a 3G network.

[0074] In some implementations, the first indication information is carried in one or more of the following: an RRC connection establishment completion message; UE capability information; or UE auxiliary information. For example, when the terminal device enters the connected state, the terminal device can carry the first indication information through the UE capability information. As another example, when the terminal device is in the connected state, the first indication information can be carried in an RRC connection establishment completion message.

[0075] In some implementations, if the terminal device supports mobility, the first indication information may carry frequency point information (e.g., frequency point value) that the terminal device supports and that corresponds to the second communication standard. In other words, the first indication information may carry frequency point information that the terminal device expects to access and that corresponds to the second communication standard. This helps the auxiliary network device to configure the terminal device (e.g., the auxiliary network device to configure frequency point priority for the terminal device) to improve the rationality of the configuration.

[0076] In some implementations, if the second communication standard includes NR NTN, the first indication information may also carry satellite information supported by the terminal device, which helps the auxiliary network device to configure the terminal device (e.g., the auxiliary network device configures frequency priority for the terminal device) to improve the rationality of the configuration.

[0077] In this embodiment, the satellite information supported by the terminal device is not limited. In some implementations, the satellite information supported by the terminal device may include ephemeris information of the satellites supported by the terminal device.

[0078] In some implementations, the first indication information may be requested by the network device through a first request; that is, the above method further includes: the network device sending a first request to the terminal device, the first request being used to request the first indication information. Of course, in the embodiments of this application, the first indication information may also be actively sent by the terminal device.

[0079] As mentioned above, the first indication information is also known as UE capability information, and correspondingly, the first request is also known as the "UE Capability Enquiry message".

[0080] In some implementations, the method further includes: the network device sending first configuration information associated with mobility to the terminal device, the first configuration information being determined based on first indication information. Here, the first configuration information associated with mobility can be understood as the first configuration information used to configure mobility-related information.

[0081] Typically, the content of the first configuration information sent by the network device may differ slightly depending on whether the terminal device is in an idle state or in a connected state. The following sections will describe these differences in conjunction with scenario 1 and scenario 2.

[0082] Scenario 1: For terminal devices in an idle state, the first configuration information is used by the terminal device to perform cell reselection / selection, where cell reselection / selection can be understood as cell reselection and / or cell selection.

[0083] In some implementations, if the terminal device supports mobility, the first configuration information includes one or more of the following: frequency point information of a first frequency point; frequency point priority of the first frequency point; frequency point priority of a second frequency point; NTN indication information of the NTN frequency point corresponding to the second frequency point; second indication information; wherein the first frequency point includes non-NTN frequency points of the second communication standard, and the second frequency point includes NTN frequency points of the second communication standard.

[0084] Taking the first configuration information including the frequency information of the first frequency point as an example, in some implementations, the frequency information of the first frequency point can be used to indicate the frequency value of the first frequency point. In other implementations, the frequency information of the first frequency point may include the absolute radio frequency channel number (ARFCN).

[0085] Taking the first configuration information including the frequency priority of the first frequency point as an example, in some implementations, the frequency priority of the first frequency point may include the frequency priority of the first frequency point and / or the frequency sub-priority corresponding to the first frequency point.

[0086] In this embodiment, the frequency priority can be a priority configured by the network device for the terminal device specifically for cell reselection; therefore, the frequency priority is also called "dedicated cell reselection priority." Correspondingly, the frequency sub-priority is also called "dedicated cell reselection sub-priority." Of course, in this embodiment, the frequency priority can also be the frequency priority used in the traditional cell reselection / selection process.

[0087] Taking the first configuration information including the frequency priority of the second frequency point as an example, in some implementations, the frequency priority of the second frequency point may include the frequency priority of the second frequency point and / or the frequency sub-priority corresponding to the second frequency point.

[0088] In this embodiment, the frequency priority can be a priority configured by the network device for the terminal device specifically for cell reselection; therefore, the frequency priority is also called "dedicated cell reselection priority." Correspondingly, the frequency sub-priority is also called "dedicated cell reselection sub-priority." Of course, in this embodiment, the frequency priority can also be the frequency priority used in the traditional cell reselection / selection process.

[0089] Taking the NTN indication information of the NTN frequency point corresponding to the second frequency point as an example, in some implementations, the NTN indication information can be used to indicate the ephemeris information corresponding to the NTN frequency point. In the embodiments of this application, the number of bits occupied by the above-mentioned NTN indication information is not limited; for example, the NTN indication information can occupy 1 bit.

[0090] Taking the first configuration information including the second indication information as an example, in some implementations, the second indication information is used to indicate the priority order between cell reselection / selection via the first frequency point and cell reselection / selection via the second frequency point. In other words, the second indication information is used to indicate whether the terminal device should give priority to the first frequency point, or whether the second indication information should indicate whether the terminal device should give priority to the second frequency point.

[0091] In this application embodiment, the scheme for the network device to determine the second indication information is not limited. In some implementations, the network device can determine the second indication information based on the load of the cell corresponding to the first frequency point and / or the load of the cell corresponding to the second frequency point. For example, if the load of the cell corresponding to the first frequency point is greater than a threshold, the second indication information instructs the terminal device to prioritize the second frequency point. As another example, if the load of the cell corresponding to the second frequency point is greater than a threshold, the second indication information instructs the terminal device to prioritize the first frequency point.

[0092] In some implementations, the initial configuration information can be carried in a radio resource control (RRC) message. For example, an RRC connection release message.

[0093] In some implementations, the above method further includes: if the first configuration information does not carry the second indication information, the terminal device performs cell reselection / selection based on the frequency priority of the first frequency point and / or the frequency priority of the second frequency point; and / or if the first configuration information carries the second indication information, the terminal device performs cell reselection / selection based on the frequency priority of the first frequency point, the frequency priority of the second frequency point, and the second indication information.

[0094] Example 1: If the first configuration information contains information related to the first frequency point, and the first configuration information does not carry the second indication information or information related to the second frequency point, then the terminal device can perform cell reselection / selection based on the frequency priority of the first frequency point.

[0095] Example 2: If the first configuration information contains information related to the second frequency point, and the first configuration information does not carry the second indication information or information related to the first frequency point, then the terminal device can perform cell reselection / selection based on the frequency priority of the second frequency point.

[0096] Example 3: If the first configuration information contains information related to the first frequency point and information related to the second frequency point, and the first configuration information does not carry the second indication information, then the terminal device can perform cell reselection / selection based on the frequency priority of the first frequency point and the frequency priority of the second frequency point.

[0097] Example 4: The first configuration information includes information related to the first frequency point, information related to the second frequency point, and second indication information. Then, the terminal device can perform cell reselection / selection based on the second indication information, the frequency priority of the first frequency point, and the frequency priority of the second frequency point.

[0098] It should be noted that in Examples 1 to 4, the relevant information for the first frequency point may include one or more of the following: frequency point information of the first frequency point; NTN indication information of the NTN frequency point corresponding to the second frequency point; and frequency point priority of the first frequency point. Correspondingly, the relevant information for the second frequency point may include the frequency point priority of the second frequency point.

[0099] The preceding text described the first configuration information of embodiments of this application when the terminal device supports mobility. The following text describes the first configuration information of embodiments of this application when the terminal device does not support mobility.

[0100] In some implementations, if the terminal device does not support mobility, the first configuration information includes one or more of the following: frequency point information of the first frequency point; frequency point priority of the first frequency point, wherein the first frequency point includes non-NTN frequency points of the second communication standard. For related information, please refer to the above description of the first configuration information.

[0101] In some implementations, if the terminal device does not support mobility, the above method also includes: the terminal device performing cell reselection / selection based on the frequency priority of the first frequency point.

[0102] Scenario 2: For terminal devices in the connected state, the first configuration information is used for the terminal device to perform redirection (also known as "cell redirection").

[0103] In some implementations, if the terminal device supports mobility, the first configuration information includes one or more of the following: frequency point information of a first frequency point; SSB measurement timing configuration (SMTC) information of the first frequency point; SSB subcarrier spacing configuration information; SMTC list information of a second frequency point; SMTC information of the second frequency point; NTN indication information of the NTN frequency point corresponding to the second frequency point; and third indication information, wherein the first frequency point includes non-NTN frequency points of the second communication standard, and the second frequency point includes NTN frequency points of the second communication standard.

[0104] Taking the first configuration information including the frequency information of the first frequency point as an example, in some implementations, the frequency information of the first frequency point can be used to indicate the frequency value of the first frequency point. In other implementations, the frequency information of the first frequency point may include ARFCN.

[0105] Taking the NTN indication information of the NTN frequency point corresponding to the second frequency point as an example, in some implementations, the NTN indication information can be used to indicate the ephemeris information corresponding to the NTN frequency point. In the embodiments of this application, the number of bits occupied by the above-mentioned NTN indication information is not limited; for example, the NTN indication information can occupy 1 bit.

[0106] Taking the first configuration information including the SMTC information of the first frequency point as an example, in some implementations, the SMTC information is used to indicate the timing configuration for measuring SSB at the first frequency point. For example, the SMTC information is used to guide the terminal device to perform SSB measurement within a specific time window.

[0107] Taking the first configuration information including the subcarrier spacing configuration information of the SSB as an example, in some implementations, the subcarrier spacing configuration information of the SSB is used to indicate the subcarrier spacing of the SSB at the first frequency point.

[0108] Taking the first configuration information including the SMTC list information of the second frequency point as an example, in some implementations, the SMTC list information of the second frequency point is used to indicate one or more SMTC configurations corresponding to the second frequency point.

[0109] Taking the first configuration information including the SMTC information of the second frequency point as an example, in some implementations, the SMTC information is used to indicate the timing configuration for measuring SSB on the second frequency point. For example, the SMTC information is used to guide the terminal device to perform SSB measurement within a specific time window.

[0110] Taking the first configuration information including the third indication information as an example, in some implementations, the third indication information is used to indicate the priority order between redirection based on the first frequency point and redirection based on the second frequency point. In other words, the third indication information is used to indicate whether the terminal device prioritizes the first frequency point (or whether the third indication information is used to indicate whether the terminal device prioritizes the first frequency point for camping), or whether the third indication information is used to indicate whether the terminal device prioritizes the second frequency point (or whether the third indication information is used to indicate whether the terminal device prioritizes the second frequency point for camping).

[0111] In this application embodiment, the scheme for determining the third indication information by the network device is not limited. In some implementations, the network device may determine the third indication information based on the load status of the cell corresponding to the first frequency point and / or the load status of the cell corresponding to the second frequency point. For example, if the load of the cell corresponding to the first frequency point is greater than a threshold, the third indication information instructs the terminal device to prioritize the second frequency point. As another example, if the load of the cell corresponding to the second frequency point is greater than a threshold, the third indication information instructs the terminal device to prioritize the first frequency point.

[0112] In some implementations, the initial configuration information can be carried within an RRC message. For example, an RRC connection release message.

[0113] In some implementations, the above method further includes: if the first configuration information does not carry the third indication information, the terminal device performs redirection based on the first frequency point and / or the second frequency point; and / or if the first configuration information carries the third indication information, the terminal device performs redirection based on the first frequency point, the second frequency point, and the third indication information.

[0114] Example 5: If the first configuration information contains information related to the first frequency point, and the first configuration information does not carry third indication information or information related to the second frequency point, then the terminal device can perform redirection based on the first frequency point.

[0115] Example 6: If the first configuration information contains information related to the second frequency point, and the first configuration information does not carry third indication information or information related to the first frequency point, then the terminal device can perform redirection based on the second frequency point.

[0116] Example 7: If the first configuration information includes information related to a first frequency point and information related to a second frequency point, and the first configuration information does not carry third indication information, then the terminal device can perform redirection based on the first frequency point and the second frequency point. In some implementations, the terminal device may default to prioritizing redirection based on the second frequency point. Of course, in this embodiment, the terminal device may default to prioritizing redirection based on the first frequency point.

[0117] Example 8: The first configuration information includes information related to the first frequency point, information related to the second frequency point, and third indication information. Then, the terminal device can perform redirection based on the third indication information, the first frequency point, and the second frequency point.

[0118] It should be noted that in Examples 5 to 8, the relevant information for the first frequency point may include one or more of the following: frequency point information of the first frequency point; SMTC information of the first frequency point; and subcarrier spacing configuration information of the SSB. Correspondingly, the relevant information for the second frequency point may include SMTC list information of the second frequency point; SMTC information of the second frequency point; and NTN indication information of the NTN frequency point corresponding to the second frequency point.

[0119] The preceding text described the first configuration information of embodiments of this application when the terminal device supports mobility. The following text describes the first configuration information of embodiments of this application when the terminal device does not support mobility.

[0120] In some implementations, if the terminal device does not support mobility, the first configuration information includes one or more of the following: frequency point information of the first frequency point; SMTC information of the first frequency point; subcarrier spacing configuration information of the SSB, wherein the first frequency point includes non-NTN frequency points of the second communication standard. See above for related information.

[0121] In some implementations, if the terminal device does not support mobility, the above method further includes: if the first configuration information contains information related to the first frequency point, the terminal device performs redirection based on the first frequency point; and / or if the first configuration information does not contain information related to the first frequency point, the terminal device confirms that it does not support redirection.

[0122] Example 2

[0123] Figure 3 is a schematic flowchart of a wireless communication method according to another embodiment of this application. The method shown in Figure 3 includes step S310.

[0124] In step S310, the terminal device performs cell reselection / selection or redirection based on the first information. The first information is used to indicate whether the terminal device supports mobility from a first communication standard to a second communication standard, which are different from the second communication standard.

[0125] In this embodiment, the terminal device can autonomously perform cell reselection / selection or redirection based on the first information, which helps increase the probability of the terminal device accessing a suitable frequency point. Furthermore, the terminal device's autonomous cell reselection / selection or redirection based on the first information helps reduce the complexity for network devices to configure mobility-related information for the terminal device.

[0126] In some implementations, the first information is used to indicate whether the terminal device supports mobility from a first communication standard to a second communication standard. For example, the first information is used to indicate whether the terminal device supports moving from a first communication standard to a second communication standard. Therefore, in some scenarios, the first information is also called terminal capability information, or UE capability information.

[0127] In some implementations, the first communication standard includes LTE, and / or the second communication standard includes NR NTN. Of course, in the embodiments of this application, the first communication standard may also include LTE, and correspondingly, the second communication standard includes the communication standard of a 3G network.

[0128] In some implementations, the above method further includes: the terminal device receiving first configuration information associated with mobility sent by the network device, wherein the first configuration information associated with mobility can be understood as the first configuration information used to configure mobility-related information.

[0129] Typically, the content of the first configuration information sent by the network device may differ slightly depending on whether the terminal device is in an idle state or in a connected state. The following sections will describe these differences in conjunction with scenario 1 and scenario 2.

[0130] Scenario 1: For terminal devices in an idle state, the first configuration information is used by the terminal device to perform cell reselection / selection, where cell reselection / selection can be understood as cell reselection and / or cell selection.

[0131] In some implementations, the first configuration information includes one or more of the following: frequency point information of a first frequency point; NTN indication information of the NTN frequency point corresponding to the second frequency point; frequency point priority of the first frequency point; frequency point priority of the second frequency point; and second indication information, used to indicate the priority order between cell reselection / selection via the first frequency point and cell reselection / selection via the second frequency point, wherein the first frequency point includes non-NTN frequency points of the second communication standard, and the second frequency point includes NTN frequency points of the second communication standard. For a detailed description of the relevant information, please refer to the description of the first configuration information in Scenario 1 of Embodiment 1 above; for brevity, it will not be repeated here.

[0132] In some implementations, the initial configuration information can be carried in an RRC message. For example, an RRC connection release message.

[0133] It should be noted that, in the embodiments of this application, the terminal device can autonomously select a suitable frequency point for cell reselection / selection based on the first information. Therefore, the first configuration information sent by the network device can be general to the terminal device. That is to say, the network device can send the first configuration information without considering whether the terminal device supports the above-mentioned mobility.

[0134] In some implementations, if the terminal device supports mobility, the above method further includes: if the first configuration information does not carry the second indication information, the terminal device performs cell reselection / selection based on the frequency priority of the first frequency point and the frequency priority of the second frequency point; and / or if the first configuration information carries the second indication information, the terminal device performs cell reselection / selection based on the frequency priority of the first frequency point, the frequency priority of the second frequency point, and the second indication information.

[0135] Example 1: If the first configuration information contains information related to the first frequency point, and the first configuration information does not carry the second indication information or information related to the second frequency point, then the terminal device can perform cell reselection / selection based on the frequency priority of the first frequency point.

[0136] Example 2: If the first configuration information contains information related to the second frequency point, and the first configuration information does not carry the second indication information or information related to the first frequency point, then the terminal device can perform cell reselection / selection based on the frequency priority of the second frequency point.

[0137] Example 3: If the first configuration information contains information related to the first frequency point and information related to the second frequency point, and the first configuration information does not carry the second indication information, then the terminal device can perform cell reselection / selection based on the frequency priority of the first frequency point and the frequency priority of the second frequency point.

[0138] Example 4: The first configuration information includes information related to the first frequency point, information related to the second frequency point, and second indication information. Then, the terminal device can perform cell reselection / selection based on the second indication information, the frequency priority of the first frequency point, and the frequency priority of the second frequency point.

[0139] It should be noted that in Examples 1 to 4, the relevant information for the first frequency point may include one or more of the following: frequency point information of the first frequency point; NTN indication information of the NTN frequency point corresponding to the second frequency point; and frequency point priority of the first frequency point. Correspondingly, the relevant information for the second frequency point may include the frequency point priority of the second frequency point.

[0140] In some implementations, if the terminal device does not support mobility, the above method also includes: the terminal device performing cell reselection / selection based on the frequency priority of the first frequency point.

[0141] Scenario 2: For terminal devices in the connected state, the first configuration information is used for the terminal device to perform redirection (also known as "cell redirection").

[0142] In some implementations, the first configuration information includes one or more of the following: frequency point information of a first frequency point; NTN indication information of the NTN frequency point corresponding to the second frequency point; SMTC information of the first frequency point; subcarrier spacing configuration information of the SSB; SMTC list information of the second frequency point; SMTC information of the second frequency point; and third indication information, used to indicate the priority order between redirection based on the first frequency point and redirection based on the second frequency point, wherein the first frequency point includes non-NTN frequency points of the second communication standard, and the second frequency point includes NTN frequency points of the second communication standard. For related details, please refer to the description of the first configuration information in Scenario 2 of Embodiment 1; for brevity, it will not be repeated here.

[0143] In some implementations, if the terminal device supports mobility, the above method further includes: if the first configuration information does not carry the third indication information, the terminal device performs redirection based on the first frequency point or the second frequency point; and / or if the first configuration information carries the third indication information, the terminal device performs redirection based on the first frequency point, the second frequency point, and the third indication information.

[0144] Example 5: If the first configuration information contains information related to the first frequency point, and the first configuration information does not carry third indication information or information related to the second frequency point, then the terminal device can perform redirection based on the first frequency point.

[0145] Example 6: If the first configuration information contains information related to the second frequency point, and the first configuration information does not carry third indication information or information related to the first frequency point, then the terminal device can perform redirection based on the second frequency point.

[0146] Example 7: If the first configuration information includes information related to a first frequency point and information related to a second frequency point, and the first configuration information does not carry third indication information, then the terminal device can perform redirection based on the first frequency point and the second frequency point. In some implementations, the terminal device may default to prioritizing redirection based on the second frequency point. Of course, in this embodiment, the terminal device may default to prioritizing redirection based on the first frequency point.

[0147] Example 8: The first configuration information includes information related to the first frequency point, information related to the second frequency point, and third indication information. Then, the terminal device can perform redirection based on the third indication information, the first frequency point, and the second frequency point.

[0148] It should be noted that in Examples 5 to 8, the relevant information for the first frequency point may include one or more of the following: frequency point information of the first frequency point; NTN indication information of the NTN frequency point corresponding to the second frequency point; SMTC information of the first frequency point; and subcarrier spacing configuration information of the SSB. Correspondingly, the relevant information for the second frequency point may include SMTC list information of the second frequency point; and SMTC information of the second frequency point.

[0149] In some implementations, if the terminal device does not support mobility, the above method further includes: if the first configuration information contains information related to the first frequency point, the terminal device performs redirection based on the first frequency point; and / or if the first configuration information does not contain information related to the first frequency point, the terminal device confirms that it does not support redirection.

[0150] The method embodiments of this application have been described in detail above with reference to Figures 1 to 3. The apparatus embodiments of this application will be described in detail below with reference to Figures 4 to 8. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.

[0151] Figure 4 is a schematic diagram of a terminal device according to an embodiment of this application. The terminal device 400 shown in Figure 4 includes a transmitting unit 410.

[0152] The sending unit 410 is used to send first indication information to the network device. The first indication information is used to indicate whether the terminal device supports mobility from a first communication standard to a second communication standard, wherein the first communication standard and the second communication standard are different.

[0153] In some implementations, the terminal device further includes: a first receiving unit, configured to receive first configuration information associated with the mobility sent by the network device, wherein the first configuration information is determined based on the first indication information.

[0154] In some implementations, if the terminal device supports the mobility, the first configuration information includes one or more of the following: frequency point information of a first frequency point; NTN indication information of the NTN frequency point corresponding to the second frequency point; frequency point priority of the first frequency point; frequency point priority of the second frequency point; and second indication information for indicating the priority order between cell reselection / selection via the first frequency point and cell reselection / selection via the second frequency point, wherein the first frequency point includes non-NTN frequency points of the second communication standard, and the second frequency point includes NTN frequency points of the second communication standard.

[0155] In some implementations, the terminal device further includes: if the first configuration information does not carry the second indication information, a first processing unit is configured to perform cell reselection / selection based on the frequency priority of the first frequency point and the frequency priority of the second frequency point; and / or if the first configuration information carries the second indication information, the first processing unit is configured to perform cell reselection / selection based on the frequency priority of the first frequency point, the frequency priority of the second frequency point, and the second indication information.

[0156] In some implementations, if the terminal device does not support the mobility, the first configuration information includes one or more of the following: frequency point information of the first frequency point; frequency point priority of the first frequency point, wherein the first frequency point includes the non-NTN frequency point of the second communication standard.

[0157] In some implementations, the terminal device further includes a second processing unit for performing cell reselection / selection based on the frequency priority of the first frequency.

[0158] In some implementations, if the terminal device supports the mobility, the first configuration information includes one or more of the following: frequency point information of a first frequency point; NTN indication information of the NTN frequency point corresponding to the second frequency point; SMTC information of the first frequency point; subcarrier spacing configuration information of the SSB; SMTC list information of the second frequency point; SMTC information of the second frequency point; and third indication information for indicating the priority order between redirection based on the first frequency point and redirection based on the second frequency point, wherein the first frequency point includes non-NTN frequency points of the second communication standard, and the second frequency point includes NTN frequency points of the second communication standard.

[0159] In some implementations, the terminal device further includes: if the first configuration information does not carry the third indication information, a third processing unit is configured to perform redirection based on the first frequency point or the second frequency point; and / or if the first configuration information carries the third indication information, a third processing unit is configured to perform redirection based on the first frequency point, the second frequency point, and the third indication information.

[0160] In some implementations, if the terminal device does not support the mobility, the first configuration information includes one or more of the following: frequency point information of the first frequency point; SMTC information of the first frequency point; subcarrier spacing configuration information of the SSB, wherein the first frequency point includes the non-NTN frequency point of the second communication standard.

[0161] In some implementations, the terminal device further includes: if the first configuration information contains information related to the first frequency point, then a fourth processing unit is configured to perform redirection based on the first frequency point; and / or if the first configuration information does not contain information related to the first frequency point, then a fourth processing unit is configured to confirm that redirection is not supported.

[0162] In some implementations, if the terminal device supports the mobility, the first indication information carries frequency point information corresponding to the second communication standard supported by the terminal device, and / or if the second communication standard includes NR NTN, the first indication information carries satellite information supported by the terminal device.

[0163] In some implementations, the terminal device further includes: a second receiving unit, configured to receive a first request sent by the network device, the first request being used to request the first indication information.

[0164] In some implementations, the first indication information carries one or more of the following: RRC connection establishment completion message; UE capability information; UE auxiliary information.

[0165] In some implementations, the first communication standard includes LTE, and / or the second communication standard includes NR NTN.

[0166] Figure 5 is a schematic diagram of a network device according to an embodiment of this application. The network device 500 shown in Figure 5 includes a receiving unit 510.

[0167] The receiving unit 510 is used to receive first indication information sent by the terminal device. The first indication information is used to indicate whether the terminal device supports mobility from a first communication standard to a second communication standard, wherein the first communication standard and the second communication standard are different.

[0168] In some implementations, the network device further includes: a first sending unit, configured to send first configuration information associated with the mobility to the terminal device, the first configuration information being determined based on the first indication information.

[0169] In some implementations, if the terminal device supports the mobility, the first configuration information includes one or more of the following: frequency point information of a first frequency point; NTN indication information of the NTN frequency point corresponding to the second frequency point; frequency point priority of the first frequency point; frequency point priority of the second frequency point; and second indication information for indicating the priority order between cell reselection / selection via the first frequency point and cell reselection / selection via the second frequency point, wherein the first frequency point includes non-NTN frequency points of the second communication standard, and the second frequency point includes NTN frequency points of the second communication standard.

[0170] In some implementations, if the terminal device does not support the mobility, the first configuration information includes one or more of the following: frequency point information of the first frequency point; frequency point priority of the first frequency point, wherein the first frequency point includes the non-NTN frequency point of the second communication standard.

[0171] In some implementations, if the terminal device supports the mobility, the first configuration information includes one or more of the following: frequency point information of a first frequency point; NTN indication information of the NTN frequency point corresponding to the second frequency point; SMTC information of the first frequency point; subcarrier spacing configuration information of the SSB; SMTC list information of the second frequency point; SMTC information of the second frequency point; and third indication information for indicating the priority order between redirection based on the first frequency point and redirection based on the second frequency point, wherein the first frequency point includes non-NTN frequency points of the second communication standard, and the second frequency point includes NTN frequency points of the second communication standard.

[0172] In some implementations, if the terminal device does not support the mobility, the first configuration information includes one or more of the following: frequency point information of the first frequency point; SMTC information of the first frequency point; subcarrier spacing configuration information of the SSB, wherein the first frequency point includes the non-NTN frequency point of the second communication standard.

[0173] In some implementations, if the terminal device supports the mobility, the first indication information carries frequency point information corresponding to the second communication standard supported by the terminal device, and / or if the second communication standard includes NR NTN, the first indication information carries satellite information supported by the terminal device.

[0174] In some implementations, the network device further includes: a second sending unit, configured to send a first request to the terminal device, the first request being used to request the first indication information.

[0175] In some implementations, the first indication information carries one or more of the following: RRC connection establishment completion message; UE capability information; UE auxiliary information.

[0176] In some implementations, the first communication standard includes LTE, and / or the second communication standard includes NR NTN.

[0177] Figure 6 is a schematic diagram of a terminal device according to another embodiment of this application. The terminal device 600 shown in Figure 6 includes a processing unit 610.

[0178] The processing unit 610 is used to perform cell reselection or redirection based on first information, the first information being used to indicate whether the terminal device supports mobility from a first communication standard to a second communication standard, the first communication standard being different from the second communication standard.

[0179] In some implementations, the terminal device further includes: a first receiving unit, configured to receive first configuration information associated with the mobility sent by the network device.

[0180] In some implementations, the first configuration information includes one or more of the following: frequency point information of a first frequency point; NTN indication information of the NTN frequency point corresponding to the second frequency point; frequency point priority of the first frequency point; frequency point priority of the second frequency point; and second indication information for indicating the priority order between cell reselection / selection via the first frequency point and cell reselection / selection via the second frequency point, wherein the first frequency point includes non-NTN frequency points of the second communication standard, and the second frequency point includes NTN frequency points of the second communication standard.

[0181] In some implementations, if the terminal device supports the mobility, the processing unit is configured to: if the first configuration information does not carry the second indication information, perform cell reselection / selection based on the frequency priority of the first frequency point and the frequency priority of the second frequency point; and / or if the first configuration information carries the second indication information, perform cell reselection / selection based on the frequency priority of the first frequency point, the frequency priority of the second frequency point, and the second indication information.

[0182] In some implementations, if the terminal device does not support the mobility, the processing unit is further configured to perform cell reselection / selection based on the frequency priority of the first frequency point.

[0183] In some implementations, the first configuration information includes one or more of the following: frequency point information of a first frequency point; NTN indication information of the NTN frequency point corresponding to the second frequency point; SMTC information of the first frequency point; subcarrier spacing configuration information of the SSB; SMTC list information of the second frequency point; SMTC information of the second frequency point; and third indication information for indicating the priority order between redirection based on the first frequency point and redirection based on the second frequency point, wherein the first frequency point includes non-NTN frequency points of the second communication standard, and the second frequency point includes NTN frequency points of the second communication standard.

[0184] In some implementations, if the terminal device supports the mobility, the processing unit is further configured to: if the first configuration information does not carry the third indication information, redirect based on the first frequency point or the second frequency point; and / or if the first configuration information carries the third indication information, redirect based on the first frequency point, the second frequency point, and the third indication information.

[0185] In some implementations, if the terminal device does not support the mobility, the processing unit is configured to: if the first configuration information contains information related to the first frequency point, then perform redirection based on the first frequency point; and / or if the first configuration information does not contain information related to the first frequency point, then confirm that redirection is not supported.

[0186] In some implementations, the first communication standard includes LTE, and / or the second communication standard includes NR NTN.

[0187] Figure 7 is a schematic diagram of a network device according to another embodiment of this application. The network device 700 shown in Figure 7 includes: a transmitting unit 710.

[0188] The sending unit 710 is used to send first configuration information associated with mobility to the terminal device, wherein the mobility is used to indicate the mobility of the terminal device from a first communication standard to a second communication standard.

[0189] In some implementations, the first configuration information includes one or more of the following: frequency point information of a first frequency point; NTN indication information of the NTN frequency point corresponding to the second frequency point; frequency point priority of the first frequency point; frequency point priority of the second frequency point; and second indication information for indicating the priority order between cell reselection / selection via the first frequency point and cell reselection / selection via the second frequency point, wherein the first frequency point includes non-NTN frequency points of the second communication standard, and the second frequency point includes NTN frequency points of the second communication standard.

[0190] In some implementations, the first configuration information includes one or more of the following: frequency point information of a first frequency point; NTN indication information of the NTN frequency point corresponding to the second frequency point; SMTC information of the first frequency point; subcarrier spacing configuration information of the SSB; SMTC list information of the second frequency point; SMTC information of the second frequency point; and third indication information for indicating the priority order between redirection based on the first frequency point and redirection based on the second frequency point, wherein the first frequency point includes non-NTN frequency points of the second communication standard, and the second frequency point includes NTN frequency points of the second communication standard.

[0191] In some implementations, the first communication standard includes LTE, and / or the second communication standard includes NR NTN.

[0192] In an optional embodiment, the transmitting unit 410 may be a transceiver 830. The terminal device 400 may also include a processor 810 and a memory 820, as shown in FIG8.

[0193] In an optional embodiment, the receiving unit 510 may be a transceiver 830. The network device 500 may also include a processor 810 and a memory 820, as shown in FIG8.

[0194] In an optional embodiment, the processing unit 610 may be a processor 810. The terminal device 600 may also include a transceiver 830 and a memory 820, as shown in FIG8.

[0195] In an optional embodiment, the transmitting unit 710 may be a transceiver 830. The network device 700 may also include a processor 810 and a memory 820, as shown in FIG8.

[0196] Figure 8 is a schematic structural diagram of a communication device according to an embodiment of this application. The dashed lines in Figure 8 indicate that the unit or module is optional. This device 800 can be used to implement the methods described in the above method embodiments. Device 800 can be a chip, a terminal device, or a network device.

[0197] The apparatus 800 may include one or more processors 810. The processor 810 may support the apparatus 800 in implementing the methods described in the preceding method embodiments. The processor 810 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0198] The apparatus 800 may further include one or more memories 820. The memories 820 store a program that can be executed by the processor 810, causing the processor 810 to perform the methods described in the preceding method embodiments. The memories 820 may be independent of the processor 810 or integrated within the processor 810.

[0199] The device 800 may also include a transceiver 830. The processor 810 can communicate with other devices or chips via the transceiver 830. For example, the processor 810 can send and receive data with other devices or chips via the transceiver 830.

[0200] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal or network device provided in this application, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0201] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0202] This application also provides a computer program. This computer program can be applied to the terminal or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0203] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0204] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0205] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0206] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0207] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0208] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0209] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0210] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0211] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0212] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0213] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0214] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0215] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

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