Wireless communication methods, terminal devices and network devices

Abstract

Provided are wireless communication methods, terminal devices and network devices. A wireless communication method comprises: a terminal device performing cell reselection / selection on the basis of first information, wherein the first information is used for indicating whether the terminal device supports an extended SSB periodicity, and / or whether a frequency point used for cell reselection / selection supports the extended SSB periodicity. In the present application, a terminal device may perform cell reselection / selection on the basis of first information, wherein the first information is used for indicating whether the terminal device supports an extended SSB periodicity and / or whether a frequency point used for cell reselection / selection supports the extended SSB periodicity, thereby facilitating selection of a cell matching an SSB detection capability of the terminal device, thus improving the efficiency of cell reselection / selection.

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 wireless communication methods, terminal devices, and network devices. Background Technology

[0002] With the development of communication systems, various types of terminal equipment have been incorporated into these systems. Different types of terminal equipment may have varying capabilities to detect synchronization signal / physical broadcast channel block (SSB) (also known as terminal capability). However, with the introduction of extended SSB periods, the capabilities of terminal equipment are not considered during cell reselection / selection, which may result in the terminal equipment being unable to detect SSBs within the cell. 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 performing cell reselection / selection based on first information, wherein the first information is used to indicate whether the terminal device supports extended SSB period, and / or whether the frequency point used for cell reselection / selection supports extended SSB period.

[0005] In a second aspect, a wireless communication method is provided, comprising: a network device sending second configuration information to a terminal device, the second configuration information being associated with whether the cell supports extended SSB period.

[0006] Thirdly, a terminal device is provided, comprising: a processing unit, configured to perform cell reselection / selection based on first information, wherein the first information is used to indicate whether the terminal device supports extended SSB cycles, and / or whether the frequency point used for cell reselection / selection supports extended SSB cycles.

[0007] Fourthly, a network device is provided, comprising: a transmitting unit for transmitting second configuration information to a terminal device, the second configuration information being associated with whether the cell supports extended SSB periods.

[0008] Fifthly, 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, causing the terminal device to perform some or all of the steps in the method of the first aspect.

[0009] In a sixth 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 in the method of the second aspect.

[0010] Seventhly, 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.

[0011] Eighthly, 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.

[0012] Ninthly, 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 of the methods described in the foregoing aspects. In some implementations, the computer program product may be a software installation package.

[0013] In a tenth 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.

[0014] In this application, the terminal device can perform cell reselection / selection based on first information. The first information is used to indicate whether the terminal device supports extended SSB period and / or whether the frequency point used for cell reselection / selection supports extended SSB period, which helps to select a cell that matches the SSB detection capability of the terminal device, thereby improving the efficiency of cell reselection / selection. Attached Figure Description

[0015] Figure 1 shows a wireless communication system 100 used in an embodiment of this application.

[0016] Figure 2 is a schematic flowchart of a wireless communication method according to an embodiment of this application.

[0017] Figure 3 is a schematic flowchart of the cell reselection scheme in the embodiments of this application.

[0018] Figure 4 is a schematic flowchart of a cell reselection scheme in another embodiment of this application.

[0019] Figure 5 is a schematic diagram of a terminal device according to an embodiment of this application.

[0020] Figure 6 is a schematic diagram of a network device according to an embodiment of this application.

[0021] Figure 7 is a schematic structural diagram of a communication device according to an embodiment of this application. Detailed Implementation

[0022] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] The network device in this application embodiment can be a device for communicating 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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).

[0033] Community Selection

[0034] 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.

[0035] 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.

[0036] 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.

[0037] Community re-election

[0038] 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.

[0039] 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.

[0040] Measurement criteria for cell reselection

[0041] 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.

[0042] 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.

[0043] 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.

[0044] If relaxed measurement is configured in SIB2 and the terminal device supports relaxed measurement, the terminal device can perform relaxed measurement.

[0045] 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".

[0046] 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.

[0047] NR Inter-frequency and inter-RAT cell reselection criteria

[0048] 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.

[0049] 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 and is 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.

[0050] When multiple cells meet the above criteria, the terminal device shall reselect the cell as follows:

[0051] -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.

[0052] - If the highest priority frequency is from another RAT, the best ranked cell on that frequency meets the criteria of that RAT.

[0053] Cell reselection criteria for cells with the same priority or lower priority frequencies:

[0054] The cell ranking criteria for serving cell Rs and neighboring cells Rn are defined as follows:

[0055] Rs=Qmeas,s+Qhyst-Qoffsettemp

[0056] Rn=Qmeas,n-Qoffset-Qoffsettemp

[0057] 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.

[0058] 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.

[0059] NTN cell downlink coverage enhancement

[0060] Because the total downlink transmission power of a satellite is limited, but the coverage area is relatively large, the satellite cannot provide good downlink coverage. Therefore, some discussions have proposed using beam hopping to enhance the downlink coverage of NTN cells. That is, with a fixed total downlink transmission power, some beams in the NTN cell are skipped, reducing the number of beams supported by the satellite at any given time. This allows the total downlink transmission power to be distributed across fewer beams, thereby improving the downlink coverage of the NTN cell.

[0061] Furthermore, beam skipping reduces the number of beams a satellite supports simultaneously by grouping the beams it supports. In other words, all beams supported by the satellite are divided into multiple groups, and beams belonging to the same group constitute all the beams supported by the satellite within a given time period. The satellite can support different groups of beams at different times. Therefore, if SSBs are to be transmitted using beams, they need to be transmitted separately through multiple groups of beams. Thus, compared to the traditional method of transmitting SSBs using all supported beams simultaneously, this method of transmitting SSBs through grouped beams requires a longer SSB period. Therefore, in scenarios where SSBs are transmitted through grouped beams, the SSB period can also be called the "extended SSB period."

[0062] It should be noted that the embodiments of this application do not limit the name of the SSB cycle in the downlink coverage enhancement scenario. For example, the SSB cycle in the downlink coverage enhancement scenario can also be called the first SSB cycle, and correspondingly, the SSB cycle in the conventional scheme can be called the second SSB cycle, wherein the first SSB cycle is greater than or equal to the second SSB cycle. For ease of description, the SSB cycle in the downlink coverage enhancement scenario will be referred to as the "extended SSB cycle" below to distinguish it from the SSB cycle in the conventional scheme.

[0063] In some implementations, the SSB period configured for a cell can range from 5ms to 160ms. Typically, if the terminal device does not receive the SSB configuration from the cell, it can default to a cell SSB period of 20ms.

[0064] In some implementations, when the NTN cell supports downlink coverage enhancement, the extended SSB period can be 160ms. Of course, in this embodiment, the extended SSB period can also be a value greater than 160ms, such as 320ms and 640ms.

[0065] With the development of communication systems, various types of terminal equipment have been incorporated into these systems. Different types of terminal equipment may have varying capabilities to detect SSBs (also known as terminal capabilities). However, with the introduction of extended SSB periods, the capabilities of terminal equipment are not considered during cell reselection / selection, which may result in the terminal equipment being unable to detect SSBs within the cell.

[0066] For example, some terminal devices have poor SSB detection capabilities and can only perform detection within a short SSB period. In this case, if such a terminal device camps on a cell that supports an extended SSB period through cell reselection / selection, the terminal device will be unable to detect the SSB in that cell, resulting in the terminal device failing to access the cell and reducing the efficiency of cell reselection / selection.

[0067] Therefore, to address the above problems, this application proposes a wireless communication method in which a terminal device can perform cell reselection / selection based on first information. The first information is used to indicate whether the terminal device supports extended SSB period and / or whether the frequency point used for cell reselection / selection supports extended SSB period, which helps to select a cell that matches the SSB detection capability of the terminal device, thereby improving the efficiency of cell reselection / selection.

[0068] It should be noted that, in the embodiments of this application, cell reselection / selection can be understood as including cell reselection and / or cell selection. That is to say, cell reselection / selection in the embodiments of this application can be replaced with cell reselection and / or cell selection.

[0069] The wireless communication method of this application embodiment is described below with reference to FIG2. The method shown in FIG2 includes step S210.

[0070] In step S210, the terminal device performs cell reselection / selection based on the first information, wherein the first information is used to indicate whether the terminal device supports extended SSB period, and / or whether the frequency point used for cell reselection / selection supports extended SSB period.

[0071] In some implementations, the first information is used to indicate whether the terminal device supports extended SSB cycles. This can be understood as indicating whether the terminal device supports detecting SSBs within extended SSB cycles.

[0072] In some implementations, whether the frequency point used for cell reselection / selection supports extended SSB period can be understood as whether the frequency point used for cell reselection / selection supports transmitting SSB based on extended SSB period.

[0073] In some implementations, the frequency points used for cell reselection / selection include a first type of frequency point and a second type of frequency point. The first type of frequency point supports extended SSB cycles; for example, the cell corresponding to the first type of frequency point may include an NTN cell that supports downlink coverage enhancement. The second type of frequency point does not support extended SSB cycles. For example, the cell corresponding to the second type of frequency point may include a traditional TN cell and / or an NTN cell that does not support downlink coverage enhancement.

[0074] In some implementations, if the terminal device supports extended SSB cycles, the frequency priority of the first type of frequency point is higher than that of the second type of frequency point. Alternatively, the terminal device can determine that the frequency priority of the first type of frequency point is higher than that of the second type of frequency point. This helps the terminal device select (or reselect) a cell that supports extended SSB cycles during cell reselection / selection.

[0075] In some implementations, if the terminal device does not support extended SSB cycles, the frequency priority of the first type of frequency point is lower than that of the second type of frequency point. Alternatively, the terminal device can determine that the frequency priority of the first type of frequency point is lower than that of the second type of frequency point. This helps the terminal device select (or reselect) a cell that does not support extended SSB cycles during cell reselection / selection.

[0076] In this application embodiment, the configuration process for frequency point priority is not limited. In some implementations, the frequency point priority of the second type of frequency point is configured through system information. In other implementations, the above method further includes: the network device sending first configuration information to the terminal device, the first configuration information being used to configure the frequency point priority of the first type of frequency point. For example, the first configuration information can be carried in an RRC message, wherein the RRC message may include, for example, an RRC release message.

[0077] The first type of frequency point and the second type of frequency point in the embodiments of this application have been introduced above. The following describes the method for determining the frequency point priority in the embodiments of this application.

[0078] In some implementations, frequency priority can be determined based on a first rule, which can be predefined, preconfigured, or configured by the network device for the terminal device.

[0079] In some implementations, the first rule is associated with one or more of the following: whether the frequency point supports extended SSB cycles; whether the frequency point priority is configured; whether the frequency point priority associated with the extended SSB cycle is configured; whether the terminal device supports extended SSB cycles; the extended SSB cycles supported by the terminal device; and whether the first cell corresponding to the first frequency point in the frequency points used for cell reselection / selection supports extended SSB cycles.

[0080] Taking the association of the first rule with whether the cell supports extended SSB and / or whether the terminal device supports extended SSB cycles as an example, in some implementations, the first rule may include that if the terminal device supports extended SSB cycles, then the frequency point priority of the first type of frequency point is higher than the frequency point priority of the second type of frequency point, or in other words, the frequency point priority of the frequency point that supports extended SSB cycles is higher than the frequency point priority of the frequency point that does not support extended SSB cycles.

[0081] In some other implementations, the first rule may include that if the terminal device does not support extended SSB cycles, then the frequency point priority of the first type of frequency point is lower than the frequency point priority of the second type of frequency point, or in other words, the frequency point priority of the frequency point that supports extended SSB cycles is lower than the frequency point priority of the frequency point that does not support extended SSB cycles.

[0082] Taking the association between the first rule and frequency point priority configuration as an example, in some implementations, the first rule includes the frequency point priority corresponding to the frequency point without configured frequency point priority among the frequency points used for cell reselection / selection, which is the lowest among the frequency points of the first type and / or the second type. That is, if the network does not configure a frequency point priority, the terminal device can consider that frequency point's frequency point priority as the lowest among all frequency points that support extended SSB cycles and / or all frequency points that do not support extended SSB cycles.

[0083] In the embodiments of this application, the frequency priority of the above-mentioned frequency points can be understood as the frequency priority used in traditional cell reselection / selection.

[0084] Taking the association of the first rule with the frequency point priority associated with the extended SSB period corresponding to whether or not a frequency point is configured as an example, in some implementations, the frequency point priority associated with the extended SSB period can be understood as the frequency point priority configured for the frequency point that supports the extended SSB period. For example, the frequency point priority associated with the extended SSB period can be a dedicated frequency point priority configured for the frequency point that supports the extended SSB period.

[0085] In some implementations, when both frequency point priority (dedicated frequency point priority) associated with the extended SSB cycle and general frequency point priority (or traditional frequency point priority) are configured simultaneously, for terminal devices that support the extended SSB cycle, the dedicated priority can be given priority (or only considered) on the frequency points that support the extended SSB cycle.

[0086] In some implementations, the first rule includes the frequency point priority corresponding to the frequency point for which no frequency point priority associated with the extended SSB period is configured among the frequency points of the first type and / or the second type. That is, if the network does not configure a frequency point priority associated with the extended SSB period, the terminal device can consider the frequency point priority associated with the extended SSB period as the lowest priority among all frequency points that support extended SSB periods and / or all frequency points that do not support extended SSB periods.

[0087] Taking the association of the first rule with the extended SSB period supported by the terminal device as an example, in some implementations, if the extended SSB period supported by the terminal device is the first period, the first rule may include the frequency point priority of the frequency point corresponding to the first period in the first type of frequency points being higher than the frequency point priority of other frequency points, and the other frequency points being the frequency points in the first type of frequency points that do not correspond to the first period.

[0088] For example, among all frequency points that support extended SSB cycles, terminal devices can prioritize the frequency point with the largest supported extended SSB cycle, based on the extended SSB cycles they support, which helps to maximize downlink coverage.

[0089] Taking the first rule and the first frequency point as an example of whether the first cell supports extended SSB periodic association, in some implementations, the measurement results of the first cell are better than the measurement results of other cells in the first frequency point, or in other words, the first cell is the best-ranked cell among the cells corresponding to the first frequency point.

[0090] In some implementations, the first rule includes that if the first cell does not support extended SSB cycles, then the first frequency point is regarded by the terminal device as a frequency point that does not support extended SSB cycles.

[0091] For example, suppose the cells corresponding to the first frequency point include cells that support extended SSB cycles and cells that do not support extended SSB cycles. If the terminal device measures the cells corresponding to the first frequency point according to the priority of the frequency points that support extended SSB, but the best ranked cell of the first frequency point does not support extended SSB, then the terminal device believes that the first frequency point does not support extended SSB cycles based on the first rule.

[0092] In some implementations, if the terminal device believes that the first frequency point does not support extended SSB cycles, the frequency point priority can be re-determined based on the first rule.

[0093] As can be seen from the first rule introduced above, the implementation of the first rule may differ slightly for scenarios where the terminal device supports extended SSB cycles and scenarios where the terminal device does not support extended SSB cycles.

[0094] For example, if the terminal device supports extended SSB cycles, the first rule includes one or more of the following: the frequency point priority of the first type of frequency point is higher than the frequency point priority of the second type of frequency point; among the frequency points used for cell reselection / selection, the frequency point corresponding to the frequency point without configured frequency point priority has the lowest frequency point priority among the frequency points of the first type and / or the frequency points of the second type; among the frequency points of the first type, the frequency point corresponding to the first cycle has a higher frequency point priority than other frequency points; if the first cell does not support extended SSB cycles, then the first frequency point is regarded by the terminal device as a frequency point that does not support extended SSB cycles. For a description of the above first rule, please refer to the above text.

[0095] For example, if the terminal device does not support the extended SSB cycle, the first rule includes one or more of the following: the frequency point priority of the first type of frequency point is lower than the frequency point priority of the second type of frequency point; the frequency point priority corresponding to the frequency point for frequency point reselection / selection that is not configured with frequency point priority is the lowest among the frequency points of the first type of frequency point and / or the frequency points of the second type of frequency point. For a description of the above first rule, please refer to the above text.

[0096] The foregoing described the scheme for determining frequency point priority based on the first rule in the embodiments of this application. In some scenarios, the terminal device may determine the frequency point priority multiple times based on the first rule to improve the rationality of determining the frequency point priority.

[0097] In some implementations, the frequency priority determined by the terminal device based on the first rule is valid within the first time period. Therefore, the first time period is also called the effective time period. That is to say, the frequency priority determined by the terminal device based on the first rule is valid within the effective time period. If the effective time period is exceeded, the terminal device can re-determine the frequency priority based on the first rule.

[0098] In this embodiment of the application, the duration of the first time period is not limited. For example, the duration of the first time period can be 300 seconds.

[0099] In some implementations, if the frequency configuration changes, the terminal device can re-determine the frequency priority based on the first rule. That is, the above method also includes: in response to a change in the configuration of the frequency used for cell reselection / selection, the terminal device determines the frequency priority based on the first rule.

[0100] In some implementations, the above configuration may be a configuration associated with extended SSB cycles. For example, the configuration may include indicating the extended SSB cycles supported by the cell. As another example, the configuration may be used to indicate whether the cell supports extended SSB cycles. Of course, the embodiments of this application do not limit the configuration associated with extended SSB cycles.

[0101] For example, when the configuration of a cell supporting extended SSB cycles changes, frequency priority can be re-determined based on the first rule.

[0102] In some scenarios, network devices can configure frequency point priorities through system messages and RRC messages. The frequency point priority configured via system messages can be understood as a public frequency point priority, while the frequency point priority configured via RRC messages can be understood as a dedicated frequency point priority configured for the terminal device. In this case, if the terminal device receives both the frequency point priority configured via system messages and the frequency point priority configured via RRC messages, the terminal device can ignore the frequency point priority configured via system messages. For example, RRC messages may include RRC release messages.

[0103] In other words, the above method also includes: in response to the terminal device receiving the RRC message, the terminal device performs cell reselection / selection based on the frequency priority of the frequency point configured in the RRC message, and the frequency priority of the frequency point configured in the system information becomes invalid.

[0104] As mentioned above, the extended SSB feature has been introduced in some scenarios. Currently, terminal devices cannot know which cells support this feature for a given frequency and which do not, which may reduce communication efficiency. For example, when performing cell reselection / selection, the terminal device cannot determine whether a cell supports this feature, which may result in the terminal device being unable to receive SSB in the cell it is camped in, thus reducing the efficiency of cell reselection / selection.

[0105] Therefore, to address the aforementioned issues, network devices can send second configuration information to terminal devices regarding whether the cell corresponding to a frequency point supports extended SSB period association. This allows the terminal devices to obtain the extended SSB information corresponding to the cell, thereby improving the efficiency of cell reselection / selection. In other words, in some implementations, the network device sends second configuration information to the terminal device, which is associated with whether the cell corresponding to the frequency point supports extended SSB period association.

[0106] In some implementations, the second configuration information can be carried within system information, such as SIB19 or new system information introduced in future communication systems. Of course, in the embodiments of this application, the second configuration information can be carried within an RRC message.

[0107] It should be noted that the solution in this embodiment can be used in combination with the method shown in FIG2. In this case, before step S210, the network device sends the second configuration information to the terminal device. Of course, in this embodiment, the solution for the network device to send the second configuration information can be used alone with the method shown in FIG2.

[0108] In some implementations, the second configuration information is used to indicate one or more of the following: whether the cell corresponding to the frequency point supports extended SSB cycles; the SSB cycle configured for the cell corresponding to the frequency point; and the frequency point priority, wherein the frequency point priority may include the frequency point priority associated with extended SSB cycles described above and / or the traditional frequency point priority.

[0109] In some implementations, the cell corresponding to the frequency point includes the serving cell and / or neighboring cells, where the serving cell may be a cell where the terminal device is camped but not connected.

[0110] For example, if the cell corresponding to the frequency point includes the serving cell, then the second configuration information is used to indicate whether the serving cell supports extended SSB period; the SSB period configured for the serving cell; and the frequency point priority of the serving cell.

[0111] For example, if the cell corresponding to a frequency point includes neighboring cells, then the second configuration information is used to indicate whether the neighboring cells support extended SSB cycles; the SSB cycles configured for the neighboring cells; and the frequency priority of the neighboring cells.

[0112] In some scenarios, the second configuration information can also indicate the frequency information of neighboring cells. In this application embodiment, the implementation method of the frequency information is not limited. In some implementations, the frequency information can be an absolute radio frequency channel number (ARFCN) value. In other implementations, the frequency information can be an index of the frequency point corresponding to SIB2, SIB3, and SIB4; for example, index 0 corresponds to the serving frequency point, index 1 corresponds to the first frequency point in the neighboring frequency, index 2 corresponds to the second frequency point in the neighboring frequency, and so on.

[0113] As mentioned above, different types of terminal devices in a communication system have different capabilities. Therefore, in some scenarios, terminal devices can send indication information to network devices to indicate capability information associated with the extended SSB cycle, which helps network devices to schedule based on the capabilities of the terminal devices.

[0114] In some implementations, the capability information associated with extended SSB cycles includes one or more of the following: whether the terminal device supports extended SSB cycles; and the extended SSB cycles supported by the terminal device.

[0115] In some implementations, the aforementioned capability information may be proactively reported by the terminal device to the network device, or it may be sent based on a request from the network device. That is, the method further includes: the network device sending a first request to the terminal device, the first request being used to request capability information.

[0116] In some implementations, the indication information is carried in one or more of the following: RRC setup complete, RRC recovery complete, and RRC re-establishment complete.

[0117] For ease of understanding, the cell reselection scheme in this application embodiment is described below with reference to Figures 3 and 4. Figure 3 illustrates the method using an example where the terminal device does not support extended SSB cycles. The method shown in Figure 3 includes steps S310 to S370. It should be understood that Figure 3 is a method flow example, and the terminology used in Figure 3 can be found in the preceding description.

[0118] In step S310, the network device sends a system message to the terminal device, which carries configuration information for obtaining the current NTN cell extended SSB period (as an example of the second configuration information).

[0119] In some implementations, the second configuration information may be used to indicate one or more of the following: whether the serving cell supports extended SSB cycles; the SSB cycles configured for the serving cell; the frequency priority of the frequency corresponding to the serving cell; the frequency information of neighboring cells; whether neighboring cells support extended SSB cycles; the frequency priority of neighboring cells related to extended SSB cycles; and the SSB cycles configured for neighboring cells.

[0120] In step S320, the terminal device determines the frequency priority based on the first rule.

[0121] In some implementations, the first rule includes one or more of the following: the frequency point priority of the first type of frequency point is lower than the frequency point priority of the second type of frequency point; in frequency points that do not support extended SSB cycles, the frequency points are sorted according to the frequency point priority configured in the system message; in frequency points that support extended SSB cycles, the frequency points that support extended SSB cycles are sorted based on the priority associated with the extended SSB cycle; the frequency point priority corresponding to the frequency point for which no frequency point priority is configured is the lowest among the frequency points of the first type of frequency points and / or the frequency points of the second type of frequency points.

[0122] In some implementations, after the terminal device obtains the frequency priority based on downlink enhancement from the RRC Release, the terminal device ignores the frequency priority obtained through the SIB message.

[0123] In some implementations, the effective duration of the frequency priority determined by the terminal device based on the first rule is 300 seconds.

[0124] In some implementations, when the configuration of the cell's support for extended SSB cycles changes, the terminal device can determine the frequency priority based on the first rule.

[0125] In step S330, the terminal device performs measurement evaluation and measurement relaxation for cell reselection based on frequency priority.

[0126] In some implementations, when a terminal device performs cell reselection based on downlink enhancement, if the highest-ranked cell or best cell on a frequency meets the cell reselection criteria for the same or different frequencies, but the cell does not support extended SSB cycles, the terminal device will consider that the frequency does not support extended SSB cycles and re-determine the frequency priority based on the first rule.

[0127] In step S340, the terminal device sends an indication message to the network device via a connection completion message to indicate the capability information associated with the extended SSB period.

[0128] In some implementations, the capability information associated with extended SSB cycles includes one or more of the following: whether the terminal device supports extended SSB cycles; and the extended SSB cycles supported by the terminal device.

[0129] In some implementations, the connection completion message includes one or more of the following: RRC establishment complete, RRC recovery complete, and RRC re-establishment complete.

[0130] Figure 4 illustrates the method using an example where the terminal device does not support extended SSB cycles. The method shown in Figure 4 includes steps S410 to S450. It should be understood that Figure 4 is a method flow diagram; the terminology used in Figure 4 can be found in the preceding text.

[0131] In step S410, the network device sends a system message to the terminal device, which carries configuration information for obtaining the current NTN cell extended SSB period (as an example of the second configuration information).

[0132] In some implementations, the second configuration information may be used to indicate one or more of the following: whether the serving cell supports extended SSB cycles; the SSB cycles configured for the serving cell; the frequency priority of the frequency corresponding to the serving cell; the frequency information of neighboring cells; whether neighboring cells support extended SSB cycles; the frequency priority of neighboring cells related to extended SSB cycles; and the SSB cycles configured for neighboring cells.

[0133] In step S420, the terminal device determines the frequency priority based on the first rule.

[0134] In some implementations, the first rule includes one or more of the following: the frequency point priority of the first type of frequency point is higher than the frequency point priority of the second type of frequency point; the frequency point priority corresponding to the frequency point for which no frequency point priority is configured among the frequency points used for cell reselection / selection is the lowest among the frequency points of the first type of frequency points and / or the frequency points of the second type of frequency points; the frequency point priority of the frequency point corresponding to the first cycle among the frequency points of the first type of frequency points is higher than the frequency point priority of other frequency points; if the first cell does not support extended SSB cycles, the first frequency point is regarded by the terminal device as a frequency point that does not support extended SSB cycles; among the frequency points that do not support extended SSB cycles, the frequency points are sorted according to the frequency point priority configured in the system message; among the frequency points that support extended SSB cycles, the frequency points that support extended SSB cycles are sorted based on the priority associated with extended SSB cycles.

[0135] In some implementations, after the terminal device obtains the frequency priority based on the downlink enhancement frequency point from the RRC release message, the terminal device ignores the frequency priority obtained through the SIB message.

[0136] In some implementations, the effective duration of the frequency priority determined by the terminal device based on the first rule is 300 seconds.

[0137] In some implementations, when the configuration of the cell's support for extended SSB cycles changes, the terminal device can determine the frequency priority based on the first rule.

[0138] In step S430, the terminal device performs measurement evaluation and measurement relaxation for cell reselection based on frequency priority.

[0139] In some implementations, when a terminal device performs cell reselection based on downlink enhancement, if the highest-ranked cell or best cell on a frequency meets the cell reselection criteria for the same or different frequencies, but the cell does not support extended SSB cycles, the terminal device will consider that the frequency does not support extended SSB cycles and re-determine the frequency priority based on the first rule.

[0140] In step S440, the network device sends a first request to the terminal device, the first request being used to request capability information associated with the extended SSB period.

[0141] In step S450, the terminal device sends an indication message to the network device via a connection completion message to indicate the capability information associated with the extended SSB period.

[0142] In some implementations, the capability information associated with extended SSB cycles includes one or more of the following: whether the terminal device supports extended SSB cycles; and the extended SSB cycles supported by the terminal device.

[0143] In some implementations, the connection completion message includes one or more of the following: RRC establishment complete, RRC recovery complete, and RRC re-establishment complete.

[0144] The method embodiments of this application have been described in detail above with reference to Figures 1 to 4. The apparatus embodiments of this application will be described in detail below with reference to Figures 5 to 7. 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.

[0145] Figure 5 is a schematic diagram of a terminal device according to an embodiment of this application. The terminal device 500 shown in Figure 5 includes a processing unit 510.

[0146] The processing unit 510 is configured to perform cell reselection / selection based on first information, wherein the first information is used to indicate whether the terminal device supports extended SSB period, and / or whether the frequency point used for cell reselection / selection supports extended SSB period.

[0147] In some implementations, the frequency points used for cell reselection / selection include a first type of frequency point and a second type of frequency point, wherein the first type of frequency point supports extended SSB cycles, and the second type of frequency point does not support extended SSB cycles. If the terminal device supports extended SSB cycles, the frequency point priority of the first type of frequency point is higher than that of the second type of frequency point; and / or if the terminal device does not support extended SSB cycles, the frequency point priority of the first type of frequency point is lower than that of the second type of frequency point.

[0148] In some implementations, the frequency point priority is determined based on a first rule, which is associated with one or more of the following: whether the frequency point supports extended SSB cycles; whether the frequency point priority is configured; whether the frequency point priority associated with the extended SSB cycle is configured; whether the terminal device supports extended SSB cycles; the extended SSB cycles supported by the terminal device; whether the first cell corresponding to the first frequency point among the frequency points used for cell reselection / selection supports extended SSB cycles, and the measurement results of the first cell are better than the measurement results of other cells in the first frequency point.

[0149] In some implementations, if the extended SSB period supported by the terminal device is a first period, the first rule includes one or more of the following: the frequency point priority of the first type of frequency point is higher than the frequency point priority of the second type of frequency point; the frequency point priority corresponding to the frequency point for which no frequency point priority is configured among the frequency points used for cell reselection / selection is the lowest among the frequency points of the first type and / or the frequency points of the second type; the frequency point priority of the frequency point corresponding to the first period among the frequency points of the first type is higher than the frequency point priority of other frequency points, wherein the other frequency points are the frequency points of the first type that do not correspond to the first period; if the first cell does not support the extended SSB period, then the first frequency point is regarded by the terminal device as a frequency point that does not support the extended SSB period.

[0150] In some implementations, if the terminal device does not support extended SSB cycles, the first rule includes one or more of the following: the frequency point priority of the first type of frequency point is lower than the frequency point priority of the second type of frequency point; the frequency point priority corresponding to the frequency point for which no frequency point priority is configured among the frequency points used for frequency point reselection / selection is the lowest among the frequency points of the first type of frequency point and / or the frequency points of the second type of frequency point.

[0151] In some implementations, the frequency priority determined based on the first rule is valid within the first time period.

[0152] In some implementations, the processing unit is further configured to: determine a frequency priority based on the first rule in response to a change in the configuration of the frequency point used for cell reselection / selection, wherein the configuration is associated with the extended SSB period.

[0153] In some implementations, the frequency priority of the second type of frequency point is configured through system information.

[0154] In some implementations, the terminal device further includes: a first receiving unit, configured to receive first configuration information sent by a network device, wherein the first configuration information is used to configure the frequency priority of the first type of frequency point.

[0155] In some implementations, the processing unit is further configured to: in response to receiving an RRC message, perform cell reselection / selection based on the frequency priority of the frequency point configured in the RRC message, and invalidate the frequency priority of the frequency point configured in the system information.

[0156] In some implementations, the terminal device further includes: a second receiving unit, configured to receive second configuration information sent by the network device, wherein the second configuration information is associated with whether the cell corresponding to the frequency point supports extended SSB period.

[0157] In some implementations, the second configuration information is used to indicate one or more of the following: whether the cell corresponding to the frequency point supports the extended SSB period; the SSB period configured for the cell corresponding to the frequency point; and the frequency point priority.

[0158] In some implementations, the cell corresponding to the frequency point includes the serving cell and / or neighboring cells.

[0159] In some implementations, the terminal device includes: a first sending unit, configured to send indication information to the network device, the indication information being used to indicate capability information associated with the extended SSB period.

[0160] In some implementations, the capability information associated with the extended SSB cycle includes one or more of the following: whether the terminal device supports the extended SSB cycle; and the extended SSB cycles supported by the terminal device.

[0161] In some implementations, the terminal device further includes a third receiving unit, configured to receive a first request sent by the network device, the first request being used to request the capability information.

[0162] In some implementations, the indication information carries one or more of the following: RRC establishment completed, RRC recovery completed, and RRC re-establishment completed.

[0163] In some implementations, the cells used for cell reselection / selection include NTN cells that support downlink coverage enhancement.

[0164] Figure 6 is a schematic diagram of a network device according to an embodiment of this application. The network device 600 shown in Figure 6 includes: a transmitting unit 610.

[0165] The sending unit 610 is used to send second configuration information to the terminal device, wherein the second configuration information is associated with whether the cell corresponding to the frequency point supports extended SSB period.

[0166] In some implementations, the second configuration information is used to indicate one or more of the following: whether the cell corresponding to the frequency point supports the extended SSB period; the SSB period configured for the cell corresponding to the frequency point; and the frequency point priority.

[0167] In some implementations, the cell corresponding to the frequency point includes the serving cell and / or neighboring cells.

[0168] In some implementations, the second configuration information is used for cell reselection / selection.

[0169] In some implementations, the sending unit is used to send first configuration information to the terminal device. The first configuration information is used to configure the frequency priority of the first type of frequency point, and the first type of frequency point supports extended SSB period.

[0170] In some implementations, the network device includes: a first receiving unit, configured to receive indication information sent by the terminal device, the indication information being used to indicate capability information associated with the extended SSB period.

[0171] In some implementations, the capability information associated with the extended SSB cycle includes one or more of the following: whether the terminal device supports the extended SSB cycle; and the extended SSB cycles supported by the terminal device.

[0172] In some implementations, the sending unit is configured to send a first request to the terminal device, the first request being used to request the capability information.

[0173] In some implementations, the indication information carries one or more of the following: RRC establishment completed, RRC recovery completed, and RRC re-establishment completed.

[0174] In an optional embodiment, the processing unit 510 may be a processor 710. The terminal device 500 may also include a transceiver 730 and a memory 720, as shown in FIG7.

[0175] In an optional embodiment, the transmitting unit 610 may be a transceiver 730. The network device 600 may also include a processor 710 and a memory 720, as shown in FIG7.

[0176] Figure 7 is a schematic structural diagram of a communication device according to an embodiment of this application. The dashed lines in Figure 7 indicate that the unit or module is optional. This device 700 can be used to implement the methods described in the above method embodiments. Device 700 can be a chip, a terminal device, or a network device.

[0177] The apparatus 700 may include one or more processors 710. The processor 710 may support the apparatus 700 in implementing the methods described in the preceding method embodiments. The processor 710 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.

[0178] The apparatus 700 may also include one or more memories 720. The memories 720 store a program that can be executed by the processor 710, causing the processor 710 to perform the methods described in the preceding method embodiments. The memories 720 may be independent of the processor 710 or integrated within the processor 710.

[0179] The device 700 may also include a transceiver 730. The processor 710 can communicate with other devices or chips via the transceiver 730. For example, the processor 710 can send and receive data with other devices or chips via the transceiver 730.

[0180] 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.

[0181] 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.

[0182] 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.

[0183] 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.

[0184] 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.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] 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.

[0192] 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.

[0193] 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.

[0194] 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.

[0195] 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.

Claims

1. A method of wireless communication, comprising: include: The terminal device performs cell reselection / selection based on first information, which is used to indicate whether the terminal device supports extended SSB period and / or whether the frequency point used for cell reselection / selection supports extended SSB period.

2. The method of claim 1, wherein, The frequency points used for cell reselection / selection include a first type of frequency point and a second type of frequency point, wherein the first type of frequency point supports extended SSB cycles, and the second type of frequency point does not support extended SSB cycles. If the terminal device supports extended SSB cycles, the frequency point priority of the first type of frequency point is higher than that of the second type of frequency point; and / or If the terminal device does not support extended SSB cycles, the frequency priority of the first type of frequency point is lower than that of the second type of frequency point.

3. The method of claim 2, wherein, The frequency priority is determined based on a first rule, which is associated with one or more of the following: Does the frequency point support extended SSB cycles? Whether to configure the frequency priority of the frequency point; Whether to configure the frequency point priority associated with the extended SSB period corresponding to the frequency point; Does the terminal device support extended SSB cycles? The extended SSB cycle supported by the terminal device; Does the first cell corresponding to the first frequency point in the frequency points used for cell reselection / selection support extended SSB cycles, and is the measurement result of the first cell better than the measurement result of other cells in the first frequency point? 4. The method of claim 3, wherein, If the extended SSB period supported by the terminal device is the first period, the first rule includes one or more of the following: The frequency point priority of the first type of frequency point is higher than the frequency point priority of the second type of frequency point; The frequency point whose frequency point is not configured with frequency point priority among the frequency points used for cell reselection / selection has the lowest frequency point priority among the first type of frequency points and / or the second type of frequency points. In the first type of frequency points, the frequency point corresponding to the first period has a higher priority than the frequency points of other frequency points, wherein the other frequency points are the frequency points in the first type that do not correspond to the first period; If the first cell does not support the extended SSB cycle, then the first frequency point is regarded by the terminal device as a frequency point that does not support the extended SSB cycle.

5. The method of claim 3 or 4, wherein, If the terminal device does not support extended SSB cycles, the first rule includes one or more of the following: The frequency priority of the first type of frequency point is lower than the frequency priority of the second type of frequency point; The frequency point whose frequency point priority is not configured among the frequency points used for frequency point reselection / selection has the lowest frequency point priority among the first type of frequency points and / or the second type of frequency points.

6. The method of any one of claims 3-5, wherein, The frequency priority determined based on the first rule is valid during the first time period.

7. The method of any one of claims 3-5, wherein, The method further includes: In response to a change in the configuration of the frequency point used for cell reselection / selection, the terminal device determines the frequency point priority based on the first rule, the configuration being associated with the extended SSB period.

8. The method of any one of claims 2-7, wherein, The frequency priority of the second type of frequency point is configured through system information.

9. The method of any one of claims 2-8, wherein, The method further includes: The terminal device receives first configuration information sent by the network device, the first configuration information being used to configure the frequency priority of the first type of frequency point.

10. The method of any one of claims 2-9, wherein, The method further includes: In response to the terminal device receiving an RRC message, the terminal device performs cell reselection / selection based on the frequency priority of the frequency point configured in the RRC message, and the frequency priority of the frequency point configured in the system information becomes invalid.

11. The method of any one of claims 1-10, wherein, The method further includes: The terminal device receives second configuration information sent by the network device, and the second configuration information is associated with whether the cell corresponding to the frequency point supports extended SSB period.

12. The method of claim 11, wherein, The second configuration information is used to indicate one or more of the following: Does the cell corresponding to the frequency point support the extended SSB cycle? The SSB period configured for the cell corresponding to the frequency point; The frequency priority of the frequency points.

13. The method of claim 11 or 12, wherein, The frequency point corresponds to a cell including the serving cell and / or neighboring cells.

14. The method of any one of claims 1-13, wherein, The method includes: The terminal device sends indication information to the network device, the indication information being used to indicate capability information associated with the extended SSB period.

15. The method of claim 14, wherein, The capability information associated with the extended SSB cycle includes one or more of the following: Does the terminal device support the extended SSB cycle? The extended SSB cycle supported by the terminal device.

16. The method as described in claim 14 or 15, characterized in that, The method further includes: The terminal device receives a first request sent by the network device, the first request being used to request the capability information.

17. The method of any one of claims 14-16, wherein, The indication information carries one or more of the following: RRC establishment completed, RRC recovery completed, RRC re-establishment completed.

18. The method of any one of claims 1-17, wherein, The cells used for cell reselection / selection include NTN cells that support downlink coverage enhancement.

19. A method of wireless communication, comprising: include: The network device sends second configuration information to the terminal device, which is associated with whether the cell corresponding to the frequency point supports extended SSB period.

20. The method of claim 19, wherein, The second configuration information is used to indicate one or more of the following: Does the cell corresponding to the frequency point support the extended SSB cycle? The SSB period configured for the cell corresponding to the frequency point; The frequency priority of the frequency points.

21. The method of claim 19 or 20, wherein, The frequency point corresponds to a cell including the serving cell and / or neighboring cells.

22. The method according to any one of claims 19-21, characterized in that, The second configuration information is used for cell reselection / selection.

23. The method according to any one of claims 20-22, characterized in that, The method further includes: The network device sends first configuration information to the terminal device. The first configuration information is used to configure the frequency priority of a first type of frequency point, and the first type of frequency point supports the extended SSB cycle.

24. The method according to any one of claims 19-23, characterized in that, The method includes: The network device receives indication information sent by the terminal device, the indication information being used to indicate capability information associated with the extended SSB period.

25. The method as described in claim 24, characterized in that, The capability information associated with the extended SSB cycle includes one or more of the following: Does the terminal device support the extended SSB cycle? The extended SSB cycle supported by the terminal device.

26. The method as described in claim 24 or 25, characterized in that, The method further includes: The network device sends a first request to the terminal device, the first request being used to request the capability information.

27. The method according to any one of claims 24-26, characterized in that, The indication information carries one or more of the following: RRC establishment completed, RRC recovery completed, RRC re-establishment completed.

28. A terminal device, characterized in that, include: The processing unit is configured to perform cell reselection / selection based on first information, wherein the first information is used to indicate whether the terminal device supports extended SSB period, and / or whether the frequency point used for cell reselection / selection supports extended SSB period.

29. The terminal device as described in claim 28, characterized in that, The frequency points used for cell reselection / selection include a first type of frequency point and a second type of frequency point, wherein the first type of frequency point supports extended SSB cycles, and the second type of frequency point does not support extended SSB cycles. If the terminal device supports extended SSB cycles, the frequency point priority of the first type of frequency point is higher than that of the second type of frequency point; and / or If the terminal device does not support extended SSB cycles, the frequency priority of the first type of frequency point is lower than that of the second type of frequency point.

30. The terminal device as described in claim 29, characterized in that, The frequency priority is determined based on a first rule, which is associated with one or more of the following: Does the frequency point support extended SSB cycles? Whether to configure the frequency priority of the frequency point; Whether to configure the frequency point priority associated with the extended SSB period corresponding to the frequency point; Does the terminal device support extended SSB cycles? The extended SSB cycle supported by the terminal device; Does the first cell corresponding to the first frequency point in the frequency points used for cell reselection / selection support extended SSB cycles, and is the measurement result of the first cell better than the measurement result of other cells in the first frequency point? 31. The terminal device as described in claim 30, characterized in that, If the extended SSB period supported by the terminal device is the first period, the first rule includes one or more of the following: The frequency point priority of the first type of frequency point is higher than the frequency point priority of the second type of frequency point; The frequency point whose frequency point is not configured with frequency point priority among the frequency points used for cell reselection / selection has the lowest frequency point priority among the first type of frequency points and / or the second type of frequency points. In the first type of frequency points, the frequency point corresponding to the first period has a higher priority than the frequency points of other frequency points, wherein the other frequency points are the frequency points in the first type that do not correspond to the first period; If the first cell does not support the extended SSB cycle, then the first frequency point is regarded by the terminal device as a frequency point that does not support the extended SSB cycle.

32. The terminal device as described in claim 30 or 31, characterized in that, If the terminal device does not support extended SSB cycles, the first rule includes one or more of the following: The frequency priority of the first type of frequency point is lower than the frequency priority of the second type of frequency point; The frequency point whose frequency point priority is not configured among the frequency points used for frequency point reselection / selection has the lowest frequency point priority among the first type of frequency points and / or the second type of frequency points.

33. The terminal device as described in any one of claims 30-32, characterized in that, The frequency priority determined based on the first rule is valid during the first time period.

34. The terminal device as described in any one of claims 30-32, characterized in that, The processing unit is further configured to: In response to a change in the configuration of the frequency point used for cell reselection / selection, a frequency point priority is determined based on the first rule, the configuration being associated with the extended SSB period.

35. The terminal device as described in any one of claims 29-34, characterized in that, The frequency priority of the second type of frequency point is configured through system information.

36. The terminal device as described in any one of claims 29-35, characterized in that, The terminal device also includes: The first receiving unit is configured to receive first configuration information sent by the network device, wherein the first configuration information is used to configure the frequency priority of the first type of frequency point.

37. The terminal device as described in any one of claims 29-36, characterized in that, The processing unit is further configured to: In response to receiving an RRC message, the cell reselection / selection is performed based on the frequency priority configured in the RRC message, and the frequency priority configured in the system information is invalidated.

38. The terminal device as described in any one of claims 28-37, characterized in that, The terminal device also includes: The second receiving unit is used to receive second configuration information sent by the network device, wherein the second configuration information is associated with whether the cell corresponding to the frequency point supports extended SSB period.

39. The terminal device as described in claim 38, characterized in that, The second configuration information is used to indicate one or more of the following: Does the cell corresponding to the frequency point support the extended SSB cycle? The SSB period configured for the cell corresponding to the frequency point; The frequency priority of the frequency points.

40. The terminal device as described in claim 38 or 39, characterized in that, The frequency point corresponds to a cell including the serving cell and / or neighboring cells.

41. The terminal device as described in any one of claims 28-40, characterized in that, The terminal device includes: The first sending unit is configured to send indication information to the network device, the indication information being used to indicate capability information associated with the extended SSB period.

42. The terminal device as described in claim 41, characterized in that, The capability information associated with the extended SSB cycle includes one or more of the following: Does the terminal device support the extended SSB cycle? The extended SSB cycle supported by the terminal device.

43. The terminal device as described in claim 41 or 42, characterized in that, The terminal device also includes: The third receiving unit is configured to receive a first request sent by the network device, wherein the first request is used to request the capability information.

44. The terminal device as described in any one of claims 41-43, characterized in that, The indication information carries one or more of the following: RRC establishment completed, RRC recovery completed, RRC re-establishment completed.

45. The terminal device as described in any one of claims 28-44, characterized in that, The cells used for cell reselection / selection include NTN cells that support downlink coverage enhancement.

46. ​​A network device, characterized in that, include: The transmitting unit is used to send second configuration information to the terminal device, wherein the second configuration information is associated with whether the cell corresponding to the frequency point supports extended SSB period.

47. The network device as described in claim 46, characterized in that, The second configuration information is used to indicate one or more of the following: Does the cell corresponding to the frequency point support the extended SSB cycle? The SSB period configured for the cell corresponding to the frequency point; The frequency priority of the frequency points.

48. The network device as described in claim 46 or 47, characterized in that, The frequency point corresponds to a cell including the serving cell and / or neighboring cells.

49. The network device as described in any one of claims 46-48, characterized in that, The second configuration information is used for cell reselection / selection.

50. The network device as described in any one of claims 47-49, characterized in that, The sending unit is used to send first configuration information to the terminal device. The first configuration information is used to configure the frequency priority of a first type of frequency point, and the first type of frequency point supports extended SSB period.

51. The network device as described in any one of claims 46-50, characterized in that, The network device includes: The first receiving unit is configured to receive indication information sent by the terminal device, the indication information being used to indicate capability information associated with the extended SSB cycle.

52. The network device as described in claim 51, characterized in that, The capability information associated with the extended SSB cycle includes one or more of the following: Does the terminal device support the extended SSB cycle? The extended SSB cycle supported by the terminal device.

53. The network device as described in claim 51 or 52, characterized in that, The sending unit is configured to send a first request to the terminal device, wherein the first request is used to request the capability information.

54. The network device as described in any one of claims 51-53, characterized in that, The indication information carries one or more of the following: RRC establishment completed, RRC recovery completed, RRC re-establishment completed.

55. A terminal device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or send signals so that the terminal device performs the method as described in any one of claims 1-18.

56. A network device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the network device performs the method as described in any one of claims 19-27.

57. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the device to perform the method as described in any one of claims 1-27.

58. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-27.

59. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-27.

60. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-27.

61. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1-27.

Images