WO2023272490A1 - 小区重选方法、终端设备、ntn设备、芯片和存储介质 - Google Patents

小区重选方法、终端设备、ntn设备、芯片和存储介质 Download PDF

Info

Publication number
WO2023272490A1
WO2023272490A1 PCT/CN2021/103138 CN2021103138W WO2023272490A1 WO 2023272490 A1 WO2023272490 A1 WO 2023272490A1 CN 2021103138 W CN2021103138 W CN 2021103138W WO 2023272490 A1 WO2023272490 A1 WO 2023272490A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
time
terminal device
ntn
information
Prior art date
Application number
PCT/CN2021/103138
Other languages
English (en)
French (fr)
Inventor
于新磊
李海涛
胡奕
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2021/103138 priority Critical patent/WO2023272490A1/zh
Priority to CN202180096034.3A priority patent/CN117178593A/zh
Publication of WO2023272490A1 publication Critical patent/WO2023272490A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements

Definitions

  • the present application relates to the communication field, and more specifically, relates to a cell reselection method, terminal equipment, NTN equipment, chip, computer readable storage medium, computer program product, computer program and communication system.
  • Non Terrestrial Network In Non Terrestrial Network (NTN) technology, satellite communication is generally used to provide communication services to ground users. Compared with terrestrial cellular network communication, satellite communication has many unique advantages. However, in satellite networks, especially in low-earth orbit (Low-Earth Orbit, LEO) satellite networks, due to the high mobility of satellites, the service time of each satellite to terminal equipment is limited. Based on this, the scheme of performing cell reselection according to the signal quality of the cell in the related art is not fully applicable to the NTN system.
  • LEO low-earth Orbit
  • the embodiments of the present application provide a cell reselection method, terminal device, NTN device, chip, computer readable storage medium, computer program product, computer program and communication system, which can be used for cell reselection in NTN.
  • An embodiment of the present application provides a cell reselection method, including:
  • the terminal device receives first time information from the NTN device, where the first time information is related to the service stop time of the NTN device;
  • the terminal device performs cell reselection according to the first time information.
  • An embodiment of the present application provides a cell reselection method, including:
  • the NTN device sends the first time information to the terminal device
  • the first time information is related to the service stop time of the NTN equipment, and the first time information is used to instruct the terminal equipment to perform cell reselection.
  • the embodiment of the present application also provides a terminal device, including:
  • the first communication module is used to receive the first time information from the NTN equipment, wherein the first time information is related to the service stop time of the NTN equipment;
  • the first processing module is configured to perform cell reselection according to the first time information.
  • the embodiment of the present application also provides an NTN device, including:
  • the second communication module is configured to send the first time information to the terminal device
  • the first time information is related to the service stop time of the NTN equipment, and the first time information is used to instruct the terminal equipment to perform cell reselection.
  • the embodiment of the present application also provides a terminal device, including: a processor and a memory, the memory is used to store a computer program, and the processor invokes and runs the computer program stored in the memory to execute the above cell reselection method.
  • the embodiment of the present application also provides an NTN device, including: a processor and a memory, the memory is used to store a computer program, and the processor invokes and runs the computer program stored in the memory to execute the above cell reselection method.
  • the embodiment of the present application also provides a chip, including: a processor, configured to invoke and run a computer program from a memory, so that a device equipped with the chip executes the above cell reselection method.
  • An embodiment of the present application further provides a computer-readable storage medium for storing a computer program, where the computer program causes the computer to execute the above method for cell reselection.
  • An embodiment of the present application further provides a computer program product, including computer program instructions, wherein the computer program instructions cause a computer to execute the above method for cell reselection.
  • the embodiment of the present application also provides a computer program, which enables the computer to execute the above cell reselection method.
  • An embodiment of the present application further provides a communication system, including a terminal device and an NTN device for performing the above cell reselection method.
  • the terminal device can perform cell reselection according to the first time information sent by the NTN device, so as to avoid the cell that the terminal device accesses is not the optimal choice due to the outage time of the NTN device, thereby facilitating The terminal equipment chooses a suitable cell to camp on.
  • FIG. 1 is a schematic diagram of a transparent forwarding satellite network architecture according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a regenerative and forwarding satellite network architecture according to an embodiment of the present application.
  • Fig. 3 is a schematic flowchart of a cell reselection method according to an embodiment of the present application.
  • Fig. 4 is a schematic flowchart of a cell reselection method according to another embodiment of the present application.
  • Fig. 5 is a schematic structural block diagram of a terminal device according to an embodiment of the present application.
  • Fig. 6 is a schematic structural block diagram of an NTN device according to an embodiment of the present application.
  • Fig. 7 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • Fig. 8 is a schematic block diagram of a chip according to an embodiment of the present application.
  • Fig. 9 is a schematic block diagram of a communication system according to an embodiment of the present application.
  • Non-Terrestrial Networks NTN
  • the embodiments of the present application describe various embodiments in conjunction with NTN equipment and terminal equipment, wherein the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • user equipment User Equipment, UE
  • access terminal subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • the terminal device can be a cordless phone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA) device, a handheld device with wireless communication function devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites) superior).
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • a virtual reality (Virtual Reality, VR) terminal device an augmented reality (Augmented Reality, AR) terminal Equipment
  • wireless terminal equipment in industrial control wireless terminal equipment in self driving
  • wireless terminal equipment in remote medical wireless terminal equipment in smart grid
  • wireless terminal equipment in transportation safety wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the NTN device may be a device used to communicate with mobile devices in the NTN system.
  • the NTN device may have a mobility feature.
  • the NTN device can be a satellite.
  • the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc.
  • the NTN device can provide services for the cell, and the terminal device communicates with the NTN device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell can be the NTN device corresponding district.
  • the transmission resources for example, frequency domain resources, or spectrum resources
  • a device with a communication function in the network/system in the embodiment of the present application may be referred to as a communication device.
  • the communication device may include an NTN device and a terminal device with a communication function, and the NTN device and the terminal device may be specific devices in the embodiments of the present application, which will not be repeated here.
  • the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.
  • NTN generally adopts satellite communication to provide communication services to ground users. Compared with terrestrial cellular network communication, satellite communication has many unique advantages.
  • Satellite communication is not restricted by user's geography.
  • general terrestrial communication cannot cover areas such as oceans, mountains, deserts, etc. where communication equipment cannot be installed or communication coverage is not possible due to sparse population.
  • Satellites can orbit the earth, so theoretically every corner of the earth can be covered by satellite communications.
  • Satellite communication has great social value. Satellite communication can be covered at a lower cost in remote mountainous areas, poor and backward countries or regions, so that people in these regions can enjoy advanced voice communication and mobile Internet technology, which is conducive to narrowing the digital gap with developed regions and promoting development of these areas.
  • the distance of satellite communication is long, and the cost of communication does not increase significantly with the increase of communication distance; moreover, the stability of satellite communication is high, and it is not limited by natural disasters.
  • LEO Low-Earth Orbit
  • MEO Medium-Earth Orbit
  • GEO Geostationary Earth Orbit
  • HEO High Elliptical Orbit
  • Low-orbit satellites have an altitude range of 500km to 1500km, and the corresponding orbital period is about 1.5 hours to 2 hours.
  • the signal propagation delay of single-hop communication between users is generally less than 20ms.
  • the maximum satellite visible time is 20 minutes.
  • the signal propagation distance is short, the link loss is small, and the requirements for the transmission power of the user terminal are not high.
  • Satellites in geosynchronous orbit have an orbital altitude of 35786km and a period of 24 hours around the earth.
  • the signal propagation delay of single-hop communication between users is generally 250ms.
  • satellites use multi-beams to cover the ground.
  • a satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam can cover tens to hundreds of kilometers in diameter. ground area.
  • Figure 1 shows a transparent forwarding satellite network architecture.
  • Figure 2 shows the satellite network architecture for regenerative forwarding.
  • the wireless link between the satellite and the NTN gateway may be called a feeder link (feeder link).
  • the UE When the user equipment UE is powered on or enters the coverage area from a blind area, the UE will search for all frequencies allowed by the Public Land Mobile Network (PLMN) and select a suitable cell to reside in. This process is called "cell selection".
  • the types of cell selection include initial cell selection and cell selection based on stored information. Regardless of the type of cell selection, it is necessary to measure the cell to be selected in order to evaluate the channel quality and judge whether it meets the camping conditions.
  • the cell selection criterion in the cellular network is called the S criterion, and camping is allowed when the S criterion is met.
  • the specific process of cell selection based on stored information includes: the user equipment UE has stored relevant information of the carrier frequency, and may also include parameter information of some cells, for example, from previously received measurement control information or from previously The information obtained in the remaining or detected cells.
  • the user equipment UE will preferentially select a cell with relevant information, and once a suitable cell appears, the user equipment UE will select the cell and camp on it. If none of the cells in which relevant information is stored is suitable, the user equipment UE will initiate initial cell selection.
  • the cell meets the cell selection criteria in the above-mentioned cellular network, that is, the S criterion, which can refer to the reference signal received power (Reference Signal Received Power, RSRP) and reference signal received quality (Reference Signal Received Quality, RSRQ) measurement quantities of the cell meet the following conditions at the same time :
  • the S criterion which can refer to the reference signal received power (Reference Signal Received Power, RSRP) and reference signal received quality (Reference Signal Received Quality, RSRQ) measurement quantities of the cell meet the following conditions at the same time :
  • Cell reselection refers to the process in which the UE selects the best cell to provide service signals by monitoring the signal quality of neighboring cells and the current cell in idle mode.
  • Cell reselection can be divided into intra-frequency cell reselection and inter-frequency cell reselection. Same-frequency cell reselection can solve the problem of wireless coverage, while inter-frequency cell reselection can not only solve the problem of wireless coverage, but also achieve load balancing by setting the priority of different frequency points.
  • UE In the process of cell reselection, in idle mode or inactive mode, UE detects the signal quality of neighboring cells and the current cell, and combines broadcast messages to select a better cell and camp on it. After the UE successfully camps on the current cell through the cell selection process, it will continue to perform cell measurement on the current cell and decide whether to start neighbor cell measurement.
  • the UE When the signal quality and level of the neighboring cell meet the S criterion and a certain reselection decision criterion (R criterion), the UE will abandon the current cell and camp on the neighboring cell.
  • the radio resource control (Radio Resource Control, RRC) layer of the UE calculates the S value Srxlev/Squal related to the above S criterion according to the RSRP/RSRQ measurement result of the current cell, and compares it with the intra-frequency measurement start threshold (S IntraSearchP /S IntraSearchQ ) is compared with the inter-frequency or inter-system measurement start threshold (S nonIntraSearchP /S nonIntraSearchQ ) as the judgment condition for whether to start the adjacent cell measurement, and the judgment process for whether to start the same-frequency measurement or the different-frequency measurement is shown in the following table.
  • RRC Radio Resource Control
  • the UE compares Srxlev with S IntraSearchP , and compares Squal with S IntraSearchQ .
  • S IntraSearchQ and S IntraSearchP are the same-frequency measurement start thresholds.
  • the electronic device compares Srxlev and S nonIntraSearchP , and Squal and S nonIntraSearchQ .
  • S nonIntraSearchQ and S nonIntraSearchP are inter-frequency or inter-system measurement start thresholds.
  • the user equipment UE After the UE meets the measurement conditions, the user equipment UE performs intra-frequency or inter-frequency measurement on the neighboring cells of the current cell, and obtains a set of candidate cells according to the measurement results. Afterwards, as shown in the table below, perform reselection conditions according to different reselection target frequencies, sort the set of cells to be selected according to certain criteria (as shown in the table), and select a suitable cell according to the sorting and reside there.
  • the high priority frequency or RAT is prioritized over the low priority frequency or RAT.
  • the current cell and neighboring cells will be sorted according to the R criterion.
  • the criteria for reselection of same-frequency and different-frequency cells of the same priority is specifically: the current cell and candidate cells are sorted according to the following R values (Rs or Rn):
  • the UE sorts the current cell and neighbor cells according to the above R criterion to obtain a set of candidate cells, it further selects the cell to camp on through the parameter rangeToBestCell. That is: among all the candidate cells within the rangeToBestCell range that differs from the R value of the cell with the best signal quality, select the cell with the most beams (beams) satisfying the threshold absThreshSS-BlocksConsolidation as the target cell.
  • Fig. 3 is a schematic flowchart of a cell reselection method according to an embodiment of the present application. The method can optionally be applied to the system shown in Figure 1 or Figure 2, but is not limited thereto. The method includes:
  • Step S310 the terminal device receives the first time information from the NTN device; wherein, the first time information is related to the service stop time of the NTN device;
  • Step S320 the terminal device performs cell reselection according to the first time information.
  • the terminal device may receive the first time information from the NTN device in an idle state or an inactive state.
  • the first time information is used to indicate the first predetermined time.
  • the first predetermined time is related to the out-of-service time of the NTN equipment or the out-of-service time of the currently serving NTN cell.
  • the first predetermined time may be represented by a Universal Time Coordinated (UTC) timestamp.
  • UTC Universal Time Coordinated
  • the first predetermined time may also be represented by other regional time, which is not limited in this application.
  • the first time information is used to indicate the above service stop time and/or a first time threshold, where the first time threshold is a time threshold before the service stop time. That is to say, the first predetermined time is the out-of-service time of the current serving NTN cell and/or the first time threshold before the out-of-service time.
  • the first time information is used to indicate the service stop time, to indicate when the current NTN cell stops serving, and to instruct the terminal device to perform cell reselection before the service stop time.
  • the first time information is used to indicate a first time threshold before the service stop time, so as to instruct the terminal device to perform cell reselection before the time threshold.
  • the first time information includes at least one of the following information:
  • the first time interval wherein the first time interval is the time interval between the service stop time and the first time threshold.
  • the first time interval may be used to indicate the first time threshold.
  • the first time information in the case that the first time information includes the above service stop time, the first time information is used to indicate the service stop time.
  • the terminal device can determine the first time threshold before the service stop time according to the first time interval, therefore, The first time information is used to indicate the service stop time and the first time threshold.
  • the first time information is carried by a system message.
  • the system message is a system message broadcast by the current NTN cell received by the terminal device in an idle state or in an inactive state.
  • the above system message includes at least one of the following messages:
  • MIB Master Information Block
  • SIB1 system information block SIB1
  • SIBx A system information block SIBx, where x is an integer greater than or equal to 2, and SIBx is, for example, SIB2, SIB3, and the like.
  • the terminal device when the terminal device receives the first time information from the NTN device, the terminal device performs cell reselection according to the first time information, which may include the terminal device determining whether to start neighbor cell measurement according to the first time information, And/or, determine the range or mode of cell reselection according to the first time information.
  • the terminal device may perform cell reselection based on RSRP/RSRQ measurement results in the aforementioned cell reselection related technologies.
  • the terminal device performs cell reselection according to the first time information, including:
  • the terminal device When it is determined that the first condition is met, the terminal device performs cell reselection according to the first time information, where the first condition is a condition for starting the measurement of neighboring cells.
  • the terminal device may start neighbor cell measurement and obtain measurement information when the first condition is met. Determine the range and/or mode of cell reselection according to the first time information, and within the range of cell reselection, use the determined mode to perform cell reselection based on the measurement information.
  • the foregoing measurement information may include measurement quantities or measurement results of RSRP and/or RSRQ.
  • the terminal device may determine whether the foregoing first condition is met according to the measurement result of the current serving NTN cell.
  • the above-mentioned first condition may include predetermined conditions related to RSRP and/or RSRQ, for example, the conditions shown in Table 2 in the foregoing cell reselection-related technologies.
  • the terminal device may also determine whether the foregoing first condition is met according to the first time information.
  • the first condition may include: reaching a second time threshold, where the second time threshold is before the service stop time indicated by the first time information and/or the first time threshold. Specifically, if the first time information only indicates the first time threshold, or if the first time information indicates both the first time threshold and the service stop time, then the second time threshold is before the first time threshold; if the first The time information only indicates the service stop time, and the second time threshold is before the service stop time.
  • the terminal device determines that the second time threshold before the time indicated by the first time information is reached, it starts neighbor cell measurement and obtains measurement information. That is, it is determined whether to start neighbor cell measurement according to whether the second time threshold related to the service stop time is reached.
  • the second time threshold may be determined by the terminal device.
  • the terminal device may set a predetermined time interval, and in the case of receiving the first time information, determine a second predetermined time before the indicated time based on the indicated time and the time interval.
  • the terminal device performs cell reselection according to the first time information, including:
  • the terminal device determines the reselected cell in the current serving NTN cell and at least one neighboring cell;
  • the terminal device determines a reselected cell in at least one neighboring cell.
  • the terminal device may determine whether to determine a reselected cell based on the current serving NTN cell according to whether the time indicated by the first time information has arrived.
  • cell sorting is performed based on the R value of the current serving NTN cell and at least one neighboring cell to determine a reselected cell (or a new cell, a target cell); In the case of the time indicated by the first time information, cell sorting is performed based on the R value of at least one neighboring cell, and the current NTN cell does not participate in the sorting. In this way, when the time indicated by the first time information is reached, the terminal device determines a reselected cell in at least one neighboring cell, so as to switch to a suitable cell to reside in when the NTN device stops serving.
  • the time indicated by the first time information is the service stop time
  • the above-mentioned arrival at the service stop time and/or the first time threshold indicated by the first time information includes when the service stop time is reached, with Make the terminal equipment switch to the new cell in time.
  • the time indicated by the first time information includes the first time threshold, for example, includes the service stop time and the first time threshold, or only includes the first time threshold, since the first time threshold is before the service stop time, the above-mentioned reaching the first
  • the service stop time indicated by the time information and/or the situation of the first time threshold includes when the first time threshold is reached or after the first time threshold is reached.
  • the manner in which the terminal device determines the reselected cell in the current serving NTN cell and at least one neighboring cell can be set according to Table 3 in the aforementioned cell reselection related technologies, for example, for different In the frequency neighbor area, the UE sorts all the cells that meet the S criterion: use the average RSRP result to get Q meas,s and Q meas,n , and calculate the Rs and Rn values based on Q meas,s and Q meas,n , according to the R criterion Sort.
  • rangeToBestCell if rangeToBestCell is not configured, the terminal device should perform cell reselection to reselect to the cell with the highest R value; if rangeToBestCell is configured, among all cells within the rangeToBestCell range from the R value of the highest ranked cell, The UE shall perform cell reselection to the cell with the largest number of beams satisfying the threshold (absThreshSS-BlocksConsolidation). If there are multiple such cells, the UE shall perform cell reselection to the cell with the highest R value among these cells.
  • the cell reselection method further includes:
  • the terminal device switches to the reselected cell.
  • the above steps may be performed in a case where the terminal device has not received the first time information, or has received the first time information but has not reached the indicated time.
  • the terminal device when the terminal device does not receive the first time information, or receives the first time information but has not reached the indicated time, the terminal device must meet the following conditions before switching to the reselected cell:
  • Condition 1 During the preset time interval Treselection RAT , according to the above cell reselection criteria, the reselected cell is better than the current serving cell;
  • Condition 2 The UE camps on the current serving cell for more than 1 second.
  • the method for the terminal device to determine the reselected cell in at least one neighboring cell can also be implemented in a manner similar to the above-mentioned method for determining the reselected cell in the current serving NTN cell and at least one neighboring cell, with the difference The reason is that the current serving NTN cell does not participate in sorting and reselection, and/or, the terminal device switches to the reselected cell after determining the reselected cell.
  • the terminal device determines the reselected cell in at least one neighboring cell, including:
  • the terminal device determines the reselected cell in the at least one neighboring cell according to the measurement information of the at least one neighboring cell.
  • the terminal device determines a reselected cell in at least one neighboring cell according to measurement information of at least one neighboring cell, including:
  • the terminal device uses the measurement information of at least one same-frequency neighboring cell and/or equal-priority inter-frequency neighboring cell , determining the ranking of at least one same-frequency neighboring cell and/or inter-frequency neighboring cells of the same priority;
  • the terminal device determines the reselected cell in at least one same-frequency neighboring cell and/or the same-priority different-frequency neighboring cell according to the ranking of the at least one same-frequency neighboring cell and/or the same-priority different-frequency neighboring cell.
  • the UE sorts all cells satisfying the S criterion except the current serving NTN cell, uses the average RSRP result to obtain Q meas,n , calculates the R n value based on Q meas, n, and sorts according to the R criterion.
  • rangeToBestCell if rangeToBestCell is not configured, the terminal device should perform cell reselection to reselect to the cell with the highest R value; if rangeToBestCell is configured, among all cells within the rangeToBestCell range from the R value of the highest ranked cell, The UE shall perform cell reselection to the cell with the largest number of beams satisfying the threshold (absThreshSS-BlocksConsolidation). If there are multiple such cells, the UE shall perform cell reselection to the cell with the highest R value among these cells.
  • the terminal device determines the reselected cell in at least one neighboring cell according to the measurement information of at least one neighboring cell, which may include:
  • the terminal device determines the cell meeting the predetermined criterion as a reselected cell.
  • the aforementioned predetermined criterion is the aforementioned S criterion. That is, the measurements of RSRP and RSRQ satisfy Srxlev>0 and Squal>0 at the same time. Among them, Srxlev is related to RSRP, and Squal is related to RSRQ.
  • the terminal device adopts a scheme similar to the above-mentioned cell selection related technology to find a neighboring cell whose RSRP/RSRQ satisfies the threshold (such as satisfying the S criterion) and then reselects to the cell .
  • the cell reselection method further includes:
  • the terminal device switches to the reselected cell.
  • FIG. 4 shows a schematic flowchart of the method.
  • the method can optionally be applied to the system shown in FIG. 1 or FIG. 2 , but is not limited thereto.
  • the method includes:
  • Step S410 the NTN device sends the first time information to the terminal device
  • the first time information is related to the service stop time of the NTN device, and the first time information is used to instruct the terminal device to perform cell reselection.
  • the terminal device can perform cell reselection according to the first time information sent by the NTN device, so as to avoid that the cell accessed by the terminal device is not the best due to the limited service time of the NTN device. Preferential selection, so that it is convenient for the terminal equipment to select a suitable cell to camp on.
  • the UE performs cell reselection based on RSRP sorting, but the current serving NTN cell does not participate in the sorting.
  • the cell reselection method includes at least part of the following content.
  • the UE in the idle state or the inactive state receives the system message broadcast by the current serving NTN cell.
  • the system message includes:
  • the service stop time of the current serving NTN cell (such as a UTC timestamp), which is used to indicate the service stop time of the current serving NTN cell, such as when the current service NTN cell stops serving.
  • the system information may be MIB, SIB1, SIBx, etc., and may be carried by different system information.
  • Conditions for starting measurement For inter-frequency cells of the same frequency or the same priority, based on the S criterion of RSRP/RSRQ, the UE decides whether to perform adjacent cell measurement; and, before the service stop time, the UE should perform adjacent cell measurement, The specific start time can be realized based on UE.
  • the UE can select an appropriate NTN device for access according to the above information broadcast by the current serving NTN cell:
  • the UE Before the moment when the current serving NTN cell stops serving, the UE performs cell reselection based on RSRP/RSRQ.
  • the UE evaluates the cells that meet the S criterion, and the UE performs cell reselection based on RSRP ranking, but the current serving NTN cell does not participate in the ranking.
  • step 4 includes:
  • the UE sorts all the cells that meet the S criterion: use the average RSRP result to get Q meas,s and Q meas,n , calculate the Rn and Rs values, and sort according to the R criterion.
  • the UE ranks all cells satisfying the S criterion except the current serving NTN cell:
  • the UE shall perform cell reselection to the cell with the highest R value;
  • the UE shall perform cell reselection to the cell with the largest number of beams satisfying the threshold (absThreshSS-BlocksConsolidation) among all cells within the rangeToBestCell range from the R value of the highest ranked cell. If there are multiple such cells, the UE shall perform cell reselection to the cell with the highest ranked R value.
  • the UE should reselect to a new cell only if the following conditions are met :
  • the new cell is better than the current serving cell
  • the UE camps on the current serving cell for more than 1 second.
  • the UE when the service stop time of the current NTN broadcast is reached, the UE does not perform sorting, and finds a neighboring cell whose RSRP/RSRQ meets the threshold (such as meeting the S criterion) and then reselects to the cell.
  • the cell reselection method includes at least part of the following content.
  • the UE in the idle state or the inactive state receives the system message broadcast by the current serving NTN cell.
  • the system message includes:
  • the service stop time of the current serving NTN cell (such as a UTC timestamp), which is used to indicate the service stop time of the current serving NTN cell, such as when the current service NTN cell stops serving.
  • the system information may be MIB, SIB1, SIBx, etc., and may be carried by different system information.
  • Conditions for starting measurement For inter-frequency cells of the same frequency or the same priority, based on the S criterion of RSRP/RSRQ, the UE decides whether to perform adjacent cell measurement; and, before the service stop time, the UE should perform adjacent cell measurement, The specific start time can be realized based on UE.
  • the UE can select an appropriate NTN device for access according to the above information broadcast by the current serving NTN cell:
  • the UE Before the moment when the current serving NTN cell stops serving, the UE performs cell reselection based on RSRP/RSRQ.
  • step 4 includes:
  • the UE sorts all the cells that meet the S criterion: use the average RSRP result to get Q meas,s and Q meas,n , calculate the Rn and Rs values, and sort according to the R criterion.
  • rangeToBestCell the UE shall perform cell reselection to the cell with the highest R value
  • the UE shall perform cell reselection to the cell with the largest number of beams satisfying the threshold (absThreshSS-BlocksConsolidation) among all cells within the rangeToBestCell range from the R value of the highest ranked cell. If there are multiple such cells, the UE shall perform cell reselection to the cell with the highest ranked R value.
  • the UE should reselect to a new cell only if the following conditions are met: During the TreselectionRAT time interval, according to the above cell reselection criteria, the new cell is better than the current serving cell;
  • the UE camps on the current serving cell for more than 1 second.
  • the UE shall perform cell reselection to any cell satisfying the S criterion except the current serving NTN cell.
  • the system message broadcast by the currently serving NTN cell indicates the first time threshold.
  • the UE in the idle state or the inactive state receives the system message broadcast by the current serving NTN cell.
  • the system message includes:
  • the service stop time of the current serving NTN cell (such as a UTC timestamp), which is used to indicate the stop service time of the current serving NTN cell, such as when the current service NTN cell stops serving, etc.;
  • the first time threshold or the first time interval, the first time threshold is a certain moment before the service stop time of the current serving NTN cell; the first time interval can be used to determine the first time threshold.
  • the system information may be MIB, SIB1, SIBx, etc., and may be carried by different system information.
  • Conditions for starting measurement For inter-frequency cells with the same frequency or the same priority, based on the S criterion of RSRP/RSRQ, the UE decides whether to perform adjacent cell measurement; and, before the first time threshold, the UE should perform adjacent cell measurement , the specific start time can be implemented based on the UE.
  • the UE can select an appropriate NTN device for access according to the above information broadcast by the current serving NTN cell:
  • the UE Before the first time threshold, the UE performs cell reselection based on RSRP/RSRQ.
  • the terminal device can perform cell reselection according to the first time information sent by the NTN device, so as to avoid the cell that the terminal device accesses is not the optimal choice due to the limited service time of the NTN device, thereby facilitating the selection of the terminal device reside in a suitable community.
  • this embodiment of the present application further provides a terminal device 100, referring to FIG. 5 , which includes:
  • the first communication module 110 is configured to receive first time information from the NTN device, where the first time information is related to the service stop time of the NTN device;
  • the first processing module 120 performs cell reselection according to the first time information.
  • the first time information is used to indicate the service stop time and/or a first time threshold, where the first time threshold is a time threshold before the service stop time.
  • the first time information includes at least one of the following information:
  • a first time interval where the first time interval is a time interval between the service stop time and the first time threshold.
  • the first time information is carried by a system message.
  • system message includes at least one of the following messages:
  • SIB1 system information block SIB1
  • a system information block SIBx where x is an integer greater than or equal to 2.
  • the first processing module 120 is specifically configured to:
  • cell reselection is performed according to the first time information, where the first condition is a condition for starting neighboring cell measurement.
  • the first condition includes at least one of the following conditions:
  • a second time threshold is reached, wherein the second time threshold is before the service stop time indicated by the first time information and/or the first time threshold.
  • the first processing module 120 is specifically configured to:
  • the reselected cell in the current serving NTN cell and at least one neighboring cell Before the out-of-service time and/or the first time threshold indicated by the first time information, determine the reselected cell in the current serving NTN cell and at least one neighboring cell;
  • a reselected cell is determined in at least one neighboring cell.
  • the first processing module 120 is specifically configured to:
  • the first processing module 120 is specifically configured to:
  • the at least one neighboring cell includes at least one same-frequency neighboring cell and/or an equal-priority inter-frequency neighboring cell
  • the at least one same-frequency neighboring cell and/or an equal-priority inter-frequency neighboring cell Measurement information determining the ranking of the at least one same-frequency neighboring cell and/or inter-frequency neighboring cells of the same priority
  • the ordering of the at least one same-frequency neighboring cell and/or the same-priority inter-frequency neighboring cell determine the reselected cell in the at least one same-frequency neighboring cell and/or the same-priority inter-frequency neighboring cell.
  • the first processing module 120 is specifically configured to:
  • the at least one neighboring cell If it is determined based on the measurement information of the at least one neighboring cell that the at least one neighboring cell includes a cell meeting the predetermined criterion, determining the cell meeting the predetermined criterion as a reselected cell.
  • the first processing module 120 is further configured to:
  • the first processing module 120 is further configured to:
  • the reselected cell is determined in the current serving NTN cell and at least one neighboring cell, if during a preset time interval, the reselected cell is determined based on the measurement information of the reselected cell and the measurement information of the current serving NTN cell.
  • the cell is better than the current serving NTN cell, and the terminal equipment stays in the current serving NTN cell for more than a predetermined time, then switches to the reselected cell.
  • the terminal device 100 in the embodiment of the present application can realize the corresponding functions of the terminal device in the foregoing method embodiments, and the corresponding processes, functions, implementation methods and benefits of each module (submodule, unit or component, etc.) in the terminal device 100
  • each module submodule, unit or component, etc.
  • the functions described by the various modules (submodules, units or components, etc.) in the terminal device 100 in the embodiment of the present application may be implemented by different modules (submodules, units or components, etc.), or may be implemented by the same One module (submodule, unit or component, etc.) realizes, for example, the first sending module and the second sending module can be different modules, also can be the same module, all can realize its in the embodiment of the present application corresponding function.
  • the communication module in the embodiment of the present application may be implemented by a transceiver of the device, and part or all of the other modules may be implemented by a processor of the device.
  • Fig. 6 is a schematic block diagram of an NTN device 200 according to an embodiment of the present application.
  • the NTN device 200 may include:
  • the second communication module 210 is configured to send the first time information to the terminal device
  • the first time information is related to the service stop time of the NTN device, and the first time information is used to instruct the terminal device to perform cell reselection.
  • the first time information is used to indicate the service stop time and/or a first time threshold, where the first time threshold is a time threshold before the service stop time.
  • the first time information includes at least one of the following information:
  • a first time interval where the first time interval is a time interval between the service stop time and the first time threshold.
  • the first time information is carried by a system message.
  • system message includes at least one of the following messages:
  • SIB1 system information block SIB1
  • a system information block SIBx where x is an integer greater than or equal to 2.
  • the NTN device 200 in the embodiment of the present application can implement the corresponding functions of the NTN device in the foregoing method embodiments.
  • functions, implementations and beneficial effects corresponding to each module (submodule, unit or component, etc.) in the NTN device 200 refer to the corresponding descriptions in the above method embodiments, and details will not be repeated here.
  • the functions described by the various modules (submodules, units or components, etc.) in the NTN device 200 of the application embodiment can be realized by different modules (submodules, units or components, etc.), or by the same module (submodule, unit or component, etc.), for example, the first sending module and the second sending module can be different modules, or the same module, all of which can realize their corresponding functions in the embodiments of the present application.
  • the communication module in the embodiment of the present application may be implemented by a transceiver of the device, and part or all of the other modules may be implemented by a processor of the device.
  • Fig. 7 is a schematic structural diagram of a communication device 600 according to an embodiment of the application, wherein the communication device 600 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the application.
  • the communication device 600 may further include a memory 620 .
  • the processor 610 can invoke and run a computer program from the memory 620, so as to implement the method in the embodiment of the present application.
  • the memory 620 may be an independent device independent of the processor 610 , or may be integrated in the processor 610 .
  • the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices .
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include antennas, and the number of antennas may be one or more.
  • the communication device 600 may be the NTN device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the NTN device in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here.
  • the communication device 600 may be the terminal device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the terminal device in the methods of the embodiment of the present application.
  • the communication device 600 may implement the corresponding processes implemented by the terminal device in the methods of the embodiment of the present application. For the sake of brevity, details are not repeated here.
  • Fig. 8 is a schematic structural diagram of a chip 700 according to an embodiment of the present application, wherein the chip 700 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the chip 700 may further include a memory 720 .
  • the processor 710 can call and run a computer program from the memory 720, so as to implement the method in the embodiment of the present application.
  • the memory 720 may be an independent device independent of the processor 710 , or may be integrated in the processor 710 .
  • the chip 700 may also include an input interface 730 .
  • the processor 710 can control the input interface 730 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.
  • the chip 700 may also include an output interface 740 .
  • the processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.
  • the chip can be applied to the NTN device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the NTN device in the methods of the embodiments of the present application.
  • the chip can implement the corresponding processes implemented by the NTN device in the methods of the embodiments of the present application.
  • details are not repeated here.
  • the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal device in the methods of the embodiments of the present application.
  • the chip can implement the corresponding processes implemented by the terminal device in the methods of the embodiments of the present application.
  • the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.
  • the processor mentioned above can be a general-purpose processor, a digital signal processor (DSP), an off-the-shelf programmable gate array (FPGA), an application specific integrated circuit (ASIC) or Other programmable logic devices, transistor logic devices, discrete hardware components, etc.
  • DSP digital signal processor
  • FPGA off-the-shelf programmable gate array
  • ASIC application specific integrated circuit
  • the general-purpose processor mentioned above may be a microprocessor or any conventional processor or the like.
  • the aforementioned memories may be volatile memories or nonvolatile memories, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM).
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.
  • FIG. 9 is a schematic block diagram of a communication system 800 according to an embodiment of the present application.
  • the communication system 800 includes a terminal device 810 and an NTN device 820 .
  • the terminal device 810 can be used to realize the corresponding functions realized by the terminal device in the methods of various embodiments of the present application
  • the NTN device 820 can be used to realize the corresponding functions realized by the NTN device in the methods of the various embodiments of the present application. function. For the sake of brevity, details are not repeated here.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part 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 the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transferred from a website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (such as infrared, wireless, microwave, etc.) to another website site, computer, server or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
  • sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any limitation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请涉及一种小区重选方法、终端设备、NTN设备、芯片、计算机可读存储介质、计算机程序产品、计算机程序和通信系统，该方法包括：终端设备接收来自非地面通信网络NTN设备的第一时间信息，其中，第一时间信息与NTN设备的停止服务时间相关；终端设备根据第一时间信息进行小区重选。利用本申请实施例能够便于终端设备选择到合适的小区驻留。

Description

小区重选方法、终端设备、NTN设备、芯片和存储介质 技术领域
本申请涉及通信领域，并且更具体地，涉及一种小区重选方法、终端设备、NTN设备、芯片、计算机可读存储介质、计算机程序产品、计算机程序和通信系统。
背景技术
非地面通信网络(Non Terrestrial Network，NTN)技术中，一般采用卫星通信的方式向地面用户提供通信服务。相比地面蜂窝网通信，卫星通信具有很多独特的优点。然而，在卫星网络中，尤其在低地球轨道(Low-Earth Orbit，LEO)卫星网络中，由于卫星的高移动性，每个卫星对终端设备的服务时间有限。基于此，相关技术中根据小区信号质量进行小区重选的方案并不完全适用于NTN系统。
发明内容
有鉴于此，本申请实施例提供一种小区重选方法、终端设备、NTN设备、芯片、计算机可读存储介质、计算机程序产品、计算机程序和通信系统，可用于在NTN中进行小区重选。
本申请实施例提供一种小区重选方法，包括：
终端设备接收来自NTN设备的第一时间信息，其中，第一时间信息与NTN设备的停止服务时间相关；
终端设备根据第一时间信息进行小区重选。
本申请实施例提供一种小区重选方法，包括：
NTN设备向终端设备发送第一时间信息；
其中，第一时间信息与NTN设备的停止服务时间相关，第一时间信息用于指示终端设备进行小区重选。
本申请实施例还提供一种终端设备，包括：
第一通信模块，用于接收来自NTN设备的第一时间信息，其中，第一时间信息与NTN设备的停止服务时间相关；
第一处理模块，用于根据第一时间信息进行小区重选。
本申请实施例还提供一种NTN设备，包括：
第二通信模块，用于向终端设备发送第一时间信息；
其中，第一时间信息与NTN设备的停止服务时间相关，第一时间信息用于指示终端设备进行小区重选。
本申请实施例还提供一种终端设备，包括：处理器和存储器，存储器用于存储计算机程序，处理器调用并运行存储器中存储的计算机程序，执行上述小区重选方法。
本申请实施例还提供一种NTN设备，包括：处理器和存储器，存储器用于存储计算机程序，处理器调用并运行存储器中存储的计算机程序，执行上述小区重选方法。
本申请实施例还提供一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有芯片的设备执行上述小区重选方法。
本申请实施例还提供一种计算机可读存储介质，用于存储计算机程序，其中，计算机程序使得计算机执行上述小区重选方法。
本申请实施例还提供一种计算机程序产品，包括计算机程序指令，其中，计算机程序指令使得计算机执行上述小区重选方法。
本申请实施例还提供一种计算机程序，计算机程序使得计算机执行上述小区重选方 法。
本申请实施例还提供一种通信系统，包括用于执行上述小区重选方法的终端设备和NTN设备。
根据本申请实施例的技术方案，终端设备可以根据NTN设备发送的第一时间信息进行小区重选，以避免因到达NTN设备的停止服务时间导致终端设备接入的小区不是最优选择，从而便于终端设备选择到合适的小区驻留。
附图说明
图1是本申请实施例的透明转发卫星网络架构的示意图。
图2是本申请实施例的再生转发卫星网络架构的示意图。
图3是本申请一实施例的小区重选方法的示意性流程图。
图4是本申请另一实施例的小区重选方法的示意性流程图。
图5是本申请一实施例的终端设备的示意性结构框图。
图6是本申请一实施例的NTN设备的示意性结构框图。
图7是本申请本申请实施例的通信设备示意性框图。
图8是本申请实施例的芯片的示意性框图。
图9是本申请实施例的通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。
本申请实施例的技术方案可以应用于非地面通信网络(Non-Terrestrial Networks，NTN)系统。
本申请实施例结合NTN设备和终端设备描述了各个实施例，其中，终端设备也可以称为用户设备(User Equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置等。
终端设备可以是无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备等。
在本申请实施例中，终端设备可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。
在本申请实施例中，终端设备可以是手机(Mobile Phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备或智慧家庭(smart home)中的无线终端设备等。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能 设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
在本申请实施例中，NTN设备可以是NTN系统中用于与移动设备通信的设备。作为示例而非限定，在本申请实施例中，NTN设备可以具有移动特性。可选地，NTN设备可以为卫星。例如，卫星可以为低地球轨道(low earth orbit，LEO)卫星、中地球轨道(medium earth orbit，MEO)卫星、地球同步轨道(geostationary earth orbit，GEO)卫星、高椭圆轨道(High Elliptical Orbit，HEO)卫星等。
在本申请实施例中，NTN设备可以为小区提供服务，终端设备通过该小区使用的传输资源(例如，频域资源，或者说，频谱资源)与NTN设备进行通信，该小区可以是NTN设备对应的小区。
应理解，本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。例如，通信设备可包括具有通信功能的NTN设备和终端设备，NTN设备和终端设备可以为本申请实施例中的具体设备，此处不再赘述。
应理解，本文中术语“系统”和“网络”在本文中常可互换使用。本文中术语“和/或”用来描述关联对象的关联关系，例如表示前后关联对象可存在三种关系，举例说明，A和/或B，可以表示：单独存在A、同时存在A和B、单独存在B这三种情况。本文中字符“/”一般表示前后关联对象是“或”的关系。
应理解，在本申请的实施例中提到的“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。
在本申请实施例的描述中，术语“对应”可表示两者之间具有直接对应或间接对应的关系，也可以表示两者之间具有关联关系，也可以是指示与被指示、配置与被配置等关系。
为便于理解本申请实施例的技术方案，以下对本申请实施例的相关技术进行说明，以下相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。
(一)NTN相关技术
NTN一般采用卫星通信的方式向地面用户提供通信服务。相比地面蜂窝网通信，卫星通信具有很多独特的优点。
首先，卫星通信不受用户地域的限制。例如，一般的陆地通信不能覆盖海洋、高山、沙漠等无法搭设通信设备或由于人口稀少而不做通信覆盖的区域，而对于卫星通信来说，由于一颗卫星即可以覆盖较大的地面，加之卫星可以围绕地球做轨道运动，因此理论上地球上每一个角落都可以被卫星通信覆盖。
其次，卫星通信有较大的社会价值。卫星通信在边远山区、贫穷落后的国家或地区都可以以较低的成本覆盖到，从而使这些地区的人们享受到先进的语音通信和移动互联网技术，有利于缩小与发达地区的数字鸿沟，促进这些地区的发展。
再次，卫星通信距离远，且通信距离增大通讯的成本没有明显增加；并且，卫星通信的稳定性高，不受自然灾害的限制。
通信卫星按照轨道高度的不同分为低地球轨道(Low-Earth Orbit，LEO)卫星、中地球轨道(Medium-Earth Orbit，MEO)卫星、地球同步轨道(Geostationary Earth Orbit，GEO)卫星、高椭圆轨道(High Elliptical Orbit，HEO)卫星等等。目前阶段主要研究的是LEO和GEO：
1、LEO
低轨道卫星，高度范围为500km～1500km，相应的轨道周期约为1.5小时～2小时。用户间单跳通信的信号传播延迟一般小于20ms。最大卫星可视时间20分钟。信号传播距离短，链路损耗少，对用户终端的发射功率要求不高。
2、GEO
地球同步轨道卫星，轨道高度为35786km，围绕地球旋转周期为24小时。用户间单跳通信的信号传播延迟一般为250ms。
为了保证卫星的覆盖以及提升整个卫星通信系统的系统容量，卫星采用多波束覆盖地面，一颗卫星可以形成几十甚至数百个波束来覆盖地面；一个卫星波束可以覆盖直径几十至上百公里的地面区域。
(二)卫星网络架构
目前，根据网络架构分类的卫星类型有两种，一种是透明转发(transparent payload)的卫星，一种是再生转发(regenerative payload)的卫星。图1示出了透明转发的卫星网络架构。图2示出了再生转发的卫星网络架构。其中，卫星和NTN网关(Gateway，通常位于地面)之间的无线链路可以称为馈线链路(feeder link)。
(三)小区选择相关技术
用户设备UE开机或从盲区进入覆盖区域时，UE将寻找公共陆地移动网络(Public Land Mobile Network，PLMN)允许的所有频点，并选择合适的小区驻留，这个过程称为“小区选择”。小区选择的类型包括初始小区选择和基于存储信息的小区选择。无论是哪种类型的小区选择，均需要对将要选择的小区进行测量，以便进行信道质量评估，判断是否符合驻留条件。蜂窝网络中的小区选择准则被称为S准则，满足S准则时允许驻留。
其中，基于存储信息的小区选择的具体过程包括：用户设备UE已经存储了载波频率的相关信息，同时也可能包括一些小区的参数信息，例如，从先前收到的测量控制信息或者是从先前驻留或检测到的小区中得到的信息。用户设备UE会优先选择有相关信息的小区，一旦一个合适的小区出现，用户设备UE会选择该小区并进行驻留。如果存储了相关信息的小区都不合适，则用户设备UE将发起初始的小区选择。
小区满足上述蜂窝网络中的小区选择准则即S准则，可以指小区的参考信号接收功率(Reference Signal Received Power，RSRP)和参考信号接收质量(Reference Signal Received Quality，RSRQ)的测量量同时满足如下条件：
Srxlev>0以及Squal>0；
其中，
Srxlev＝Q rxlevmeas–(Q rxlevmin+Q rxlevminoffset)–P compensation-Qoffset temp；
Squal＝Q qualmeas–(Q qualmin+Q qualminoffset)-Qoffset temp；
上述公式中各参数的含义如下：
Figure PCTCN2021103138-appb-000001
Figure PCTCN2021103138-appb-000002
表1
(四)小区重选相关技术
小区重选(cell reselection)指UE在空闲模式下通过监测邻区和当前小区的信号质量以选择一个最好的小区提供服务信号的过程。小区重选可以分为同频小区重选和异频小区重选。同频小区重选，可以解决无线覆盖问题，异频小区重选，不仅可以解决无线覆盖问题，还可以通过设定不同频点的优先级来实现负载均衡。
小区重选过程中，在空闲模式或非激活模式下UE通过检测邻区和当前小区的信号质量，结合广播消息以选择一个更好的小区并驻留。UE通过小区选择过程成功驻留到当前小区后，将持续对当前小区进行小区测量，并决定是否启动邻区测量。邻区测量过程中，当邻区的信号质量及电平满足S准则且满足一定重选判决准则(R准则)时，UE将放弃当前小区、驻留到该邻区。
具体地，UE的无线资源控制(Radio Resource Control，RRC)层根据当前小区的RSRP/RSRQ测量结果计算与上述S准则相关的S值Srxlev/Squal，并将其与同频测量启动门限(S IntraSearchP/S IntraSearchQ)和异频或异系统测量启动门限(S nonIntraSearchP/S nonIntraSearchQ)比较，作为是否启动邻区测量的判决条件，是否启动同频测量或异频测量的判决过程如下表所示。
Figure PCTCN2021103138-appb-000003
表2
如上表2所示，若邻区测量为同频测量，则UE对比Srxlev和S IntraSearchP，并比对Squal和S IntraSearchQ。其中，S IntraSearchQ和S IntraSearchP为同频测量启动门限。
若邻区测量为异频或异系统测量，则电子设备对比Srxlev和S nonIntraSearchP，以及Squal和S nonIntraSearchQ。其中，S nonIntraSearchQ和S nonIntraSearchP为异频或异系统测量启动门限。
在UE满足测量条件后，用户设备UE对当前小区的邻区进行同频或异频测量，根据测量结果得到待选小区集合。之后，如下表所示，根据不同的重选目标频率执行重选条件，按照一定的准则(如表所示)对待选小区集合进行排序，根据排序选择合适的小区并驻留。
Figure PCTCN2021103138-appb-000004
Figure PCTCN2021103138-appb-000005
表3
小区重选过程中，如果多个不同优先级小区同时满足小区重选准则，则高优先级频率或RAT优先于低优先级频率或RAT。对于同频或同等优先级的频率，如上表所示，将根据R准则对当前小区和邻区进行排序。
针对同频和同优先级异频率小区重选的准则即R准则具体为：当前小区和候选小区按照如下R值大小(Rs或Rn)排序：
当前服务小区：Rs＝Q meas,s+Q hyst-Qoffset temp；
邻小区：Rn＝Q meas,n-Qoffset–Qoffset temp
公式中各参数含义如下：
Figure PCTCN2021103138-appb-000006
表4
UE按照上述R准则对当前小区和邻居小区排序得到候选小区集合后,通过参数rangeToBestCell进一步选择驻留小区。即：在与具有最好信号质量的小区的R值相差rangeToBestCell范围内的所有候选小区中，选择满足门限absThreshSS-BlocksConsolidation的波束(beam)最多的小区为目标小区。
经本申请发明人深入研究发现，在卫星网络中，尤其在LEO卫星网络中，由于卫星的高移动性，每个卫星对UE的服务时间有限，现有的小区重选方案仅基于信号质量RSRP/RSRQ进行选择，并不完全适用于NTN。依靠现有基于RSRP/RSRQ的小区重选机制，如果当前服务小区是信号质量最好的小区，那么现有方案下，即使卫星即将停止对该地面区域的服务，也不会执行小区重选。
本申请实施例提供的方案，主要用于解决上述问题中的至少一个。
为了能够更加详尽地了解本发明实施例的特点与技术内容，下面结合附图对本发明实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本发明实施例。
图3是根据本申请一实施例的小区重选方法的示意性流程图。该方法可选地可以应 用于图1或图2所示的系统，但并不仅限于此。该方法包括：
步骤S310，终端设备接收来自NTN设备的第一时间信息；其中，第一时间信息与NTN设备的停止服务时间相关；
步骤S320，终端设备根据第一时间信息进行小区重选。
示例性地，终端设备可以在空闲态或非激活态接收来自NTN设备的第一时间信息。
可选地，在本申请实施例中，第一时间信息用于指示第一预定时间。该第一预定时间与NTN设备的停止服务时间或者说当前服务NTN小区的停止服务时间相关。
示例性地，该第一预定时间可以用国际协调时间(Universal Time Coordinated，UTC)时间戳表示。在一些场景中，第一预定时间也可以用其他地域时间表示，本申请不对此进行限定。
可选地，第一时间信息用于指示上述停止服务时间和/或第一时间门限，第一时间门限为在所述停止服务时间之前的时间门限。也就是说，第一预定时间为当前服务NTN小区的停止服务时间和/或在停止服务时间之前的第一时间门限。
例如，第一时间信息信息用于指示停止服务时间，以指示当前NTN小区什么时刻停止服务，以及指示终端设备在停止服务时间之前进行小区重选。又如，第一时间信息用于指示停止服务时间之前的第一时间门限，以指示终端设备在该时间门限之前进行小区重选。
可选地，在本申请实施例中，第一时间信息包括以下信息中的至少一个：
停止服务时间；
第一时间门限；
第一时间间隔，其中，第一时间间隔为停止服务时间与第一时间门限之间的时间间隔。
示例性地，第一时间间隔可以用于指示第一时间门限。
可以理解，在第一时间信息包括上述停止服务时间的情况下，第一时间信息用于指示停止服务时间。在第一时间信息包括上述停止服务时间，且包括第一时间门限或第一时间间隔的情况下，终端设备可以根据第一时间间隔，确定出在停止服务时间之前的第一时间门限，因此，第一时间信息用于指示停止服务时间和第一时间门限。
可选地，第一时间信息由系统消息承载。示例性地，该系统消息为终端设备在空闲态或非激活态下接收到的当前NTN小区广播的系统消息。
可选地，上述系统消息包括以下消息中的至少一个：
主信息块(Master Information Block，MIB)；
系统信息块SIB1；
系统信息块SIBx，其中，x为大于等于2的整数，SIBx例如是SIB2、SIB3等。
可选地，在终端设备接收到来自NTN设备的第一时间信息的情况下，终端设备根据第一时间信息进行小区重选，可以包括终端设备根据该第一时间信息确定是否启动邻区测量，和/或，根据该第一时间信息确定小区重选的范围或方式等。
可选地，在终端设备没有接收到来自NTN设备的第一时间信息的情况下，终端设备可以采用前述小区重选相关技术中基于RSRP/RSRQ测量结果的方式进行小区重选。
可选地，上述步骤S310，终端设备根据第一时间信息进行小区重选，包括：
在确定符合第一条件的情况下，终端设备根据第一时间信息进行小区重选，其中，第一条件为启动邻区测量的条件。
可选地，终端设备可以在符合第一条件的情况下，启动邻区测量，获得测量信息。根据第一时间信息确定小区重选的范围和/或方式，并在小区重选的范围中，采用已确定的方式，基于测量信息，进行小区重选。
示例性地，上述测量信息可以包括RSRP和/或RSRQ的测量量或者说测量结果。
可选地，终端设备可以根据当前服务NTN小区的测量结果确定是否符合上述第一条件。
示例性地，上述第一条件可以包括与RSRP和/或RSRQ相关的预定条件，例如前述小区重选相关技术中表2所示的条件。
可选地，终端设备也可以根据第一时间信息确定是否符合上述第一条件。
例如，第一条件可以包括：到达第二时间门限，其中，第二时间门限在第一时间信息所指示的停止服务时间和/或第一时间门限之前。具体而言，若第一时间信息仅指示第一时间门限，或，第一时间信息既指示第一时间门限，也指示停止服务时间，则第二时间门限在第一时间门限之前；若第一时间信息仅指示停止服务时间，则第二时间门限在停止服务时间之前。
也就是说，终端设备在确定到达第一时间信息所指示的时间之前的第二时间门限的情况下，启动邻区测量，获得测量信息。即根据是否到达与停止服务时间相关的第二时间门限，确定是否启动邻区测量。
可选地，第二时间门限可以由终端设备确定。例如，终端设备可以设置一预定的时间间隔，在接收到第一时间信息的情况下，基于所指示的时间和该时间间隔，确定在所指示的时间之前的第二预定时间。
可选地，终端设备根据第一时间信息进行小区重选，包括：
在第一时间信息所指示的停止服务时间和/或第一时间门限之前，终端设备在当前服务NTN小区和至少一个邻区中确定重选的小区；
和/或，
在到达第一时间信息所指示的停止服务时间和/或第一时间门限的情况下，终端设备在至少一个邻区中确定重选的小区。
也就是说，终端设备可以根据是否到达第一时间信息所指示的时间，确定是否基于当前服务NTN小区确定重选的小区。
例如，在到达第一时间信息所指示的时间之前，基于当前服务NTN小区和至少一个邻区的R值进行小区排序，以确定重选的小区(或者说新的小区、目标小区)；在达到第一时间信息所指示的时间的情况下，基于至少一个邻区的R值进行小区排序，当前NTN小区不参与排序。如此，在达到第一时间信息所指示的时间的情况下，终端设备在至少一个邻区中确定重选的小区，以在NTN设备停止服务的情况下，切换到合适的小区驻留。
需要说明的是，若第一时间信息所指示的时间为停止服务时间，则上述到达第一时间信息所指示的停止服务时间和/或第一时间门限的情况包括在到达停止服务时间时，以使终端设备及时切换到新小区。若第一时间信息所指示的时间包括第一时间门限，例如包括停止服务时间和第一时间门限，或者仅包括第一时间门限，由于第一时间门限在停止服务时间之前，则上述到达第一时间信息所指示的停止服务时间和/或第一时间门限的情况包括在到达第一时间门限时或在到达第一时间门限之后。
示例性地，终端设备在当前服务NTN小区和至少一个邻区中确定重选的小区的方式，可以根据前述小区重选相关技术中的表3设置，例如，对于同频或同等优先级的异频邻区，UE对所有满足S准则的小区进行排序：利用平均RSRP结果得到Q meas,s和Q meas,n，并基于Q meas,s和Q meas,n计算Rs和Rn值，根据R准则排序。
进一步地，如果没有配置rangeToBestCell，终端设备应当执行小区重选，以重选到R值排序最高的小区；如果配置了rangeToBestCell，在与排序最高的小区的R值相差rangeToBestCell范围内的所有小区中，UE应当执行小区重选到满足门限 (absThreshSS-BlocksConsolidation)的波束数目最多的小区。如果有多个这样的小区，UE应当执行小区重选到这些小区中R值排序最高的小区。
可选地，在终端设备在当前服务NTN小区和至少一个邻区中确定重选的小区之后，小区重选方法还包括：
若在预设时间间隔期间，基于重选的小区的测量信息和当前服务NTN小区的测量信息确定重选的小区优于当前服务NTN小区，且终端设备驻留在当前服务NTN小区的时长超过预定时长，则终端设备切换到重选的小区。
具体地，可以在终端设备没有接收到第一时间信息，或者接收到第一时间信息但未到达所指示的时间的情况下，执行上述步骤。例如，在终端设备没有接收到第一时间信息，或者接收到第一时间信息但未到达所指示的时间的情况下，需满足以下条件，终端设备才切换到重选的小区：
条件一：在预设时间间隔Treselection RAT期间，根据以上小区重选准则，重选的小区比当前服务小区好；
条件二：UE驻留到当前服务小区超过1秒。
在一些示例中，终端设备在至少一个邻区中确定重选的小区的方式，也可以采用与上述在当前服务NTN小区和至少一个邻区中确定重选的小区的方式类似的方式实现，区别在于当前服务NTN小区不参与排序和重选，和/或，终端设备在确定重选的小区后即切换到重选的小区。
可选地，终端设备在至少一个邻区中确定重选的小区，包括：
终端设备根据至少一个邻区的测量信息，在至少一个邻区中确定重选的小区。
可选地，针对同频邻区和/或同等优先级的异频邻区，终端设备根据至少一个邻区的测量信息，在至少一个邻区中确定重选的小区，包括：
在至少一个邻区包含至少一个同频邻区和/或同等优先级的异频邻区的情况下，终端设备根据至少一个同频邻区和/或同等优先级的异频邻区的测量信息，确定至少一个同频邻区和/或同等优先级的异频邻区的排序；
终端设备根据至少一个同频邻区和/或同等优先级的异频邻区的排序，在至少一个同频邻区和/或同等优先级的异频邻区中确定重选的小区。
例如，UE对除了当前服务NTN小区之外的所有满足S准则的小区进行排序，利用平均RSRP结果得到Q meas,n，并基于Q meas,n计算R n值，根据R准则排序。
进一步地，如果没有配置rangeToBestCell，终端设备应当执行小区重选，以重选到R值排序最高的小区；如果配置了rangeToBestCell，在与排序最高的小区的R值相差rangeToBestCell范围内的所有小区中，UE应当执行小区重选到满足门限(absThreshSS-BlocksConsolidation)的波束数目最多的小区。如果有多个这样的小区，UE应当执行小区重选到这些小区中R值排序最高的小区。
在一些示例中，终端设备根据至少一个邻区的测量信息，在至少一个邻区中确定重选的小区，可以包括：
在基于至少一个邻区的测量信息确定至少一个邻区包含符合预定准则的小区的情况下，终端设备将符合预定准则的小区确定为重选的小区。
示例性地，上述预定准则为前述S准则。即RSRP和RSRQ的测量同时满足Srxlev>0以及Squal>0。其中，Srxlev与RSRP相关，Squal与RSRQ相关。
根据上述方式，如果到达第一时间信息所指示的时间，则终端设备采用类似前述小区选择相关技术的方案，找到一个RSRP/RSRQ满足门限(如满足S准则)的邻区即重选到该小区。
可选地，在终端设备在至少一个邻区中确定重选的小区之后，小区重选方法还包括：
终端设备切换到所述重选的小区。
与上述终端设备执行的步骤相应地，本申请实施例还提供一种小区重选方法，图4示出了该方法的示意性流程图。该方法可选地可以应用于图1或图2所示的系统，但并不限于此。该方法包括：
步骤S410，NTN设备向终端设备发送第一时间信息；
其中，第一时间信息与所述NTN设备的停止服务时间相关，第一时间信息用于指示终端设备进行小区重选。
其中，第一时间信息的具体设置和实现方式可参考前述实施例。
可以看到，根据本申请实施例的小区重选方法，终端设备可以根据NTN设备发送的第一时间信息进行小区重选，以避免因NTN设备的服务时间有限导致终端设备接入的小区不是最优选择，从而便于终端设备选择到合适的小区驻留。
以上从不同角度描述了本申请实施例的具体实现方式。根据上述具体实现方式，下面提供多个应用示例，以便于了解各技术细节的具体设置。
应用示例一
本应用示例中，UE基于RSRP排序进行小区重选，但当前服务NTN小区不参与排序。具体地，小区重选方法包括以下内容中的至少部分内容。
1、空闲态或非激活态UE接收当前服务NTN小区广播的系统消息，系统消息包括：
a)当前服务NTN小区的停止服务时间(如UTC时间戳)，用于指示当前服务NTN小区的停止服务时间，例如当前服务NTN小区什么时刻停止服务等。
2、该系统消息可以是MIB、SIB1、SIBx等，可以承载于不同的系统消息。
3、启动测量的条件：对于同频或同优先级的异频小区，基于RSRP/RSRQ的S准则，UE决定是否执行邻区测量；且，在停止服务时间之前，UE应当执行邻区测量，具体启动时间可以基于UE实现。
4、后续在UE在进行小区重选时，UE根据当前服务NTN小区广播的上述信息，可以选择合适的NTN设备进行接入：
其中，对于同频或同等优先级的异频邻区，
(1)在当前服务NTN小区停止服务时刻前，UE基于RSRP/RSRQ进行小区重选。
(2)如果到达当前服务NTN小区停止服务时刻，UE对满足S准则的小区进行评估，UE基于RSRP排序(RSRP ranking)进行小区重选，但当前服务NTN小区不参与排序。
其中，步骤4的具体实施过程包括：
对于同频或同等优先级的异频邻区：
-如果没有配置当前服务NTN小区停止服务时间，或者如果配置了当前服务NTN小区停止服务时间，且在到达当前服务NTN小区停止服务时间之前：
UE对所有满足S准则的小区进行排序：利用平均RSRP结果得到Q meas,s和Q meas,n，并计算Rn和Rs值，根据R准则排序。
-如果配置了当前服务NTN小区停止服务时间，且到达当前服务NTN小区停止服务时刻：
UE对除了当前服务NTN小区之外的所有满足S准则的小区进行排序：
利用平均RSRP结果得到Q meas,n，并计算Rn值，根据R准则排序。
-如果没有配置rangeToBestCell，UE应当执行小区重选到R值排序最高的小区；
-如果配置了rangeToBestCell，在与排序最高小区的R值相差rangeToBestCell范围内的所有小区中，UE应当执行小区重选到满足门限(absThreshSS-BlocksConsolidation)的波束数目最多的小区。如果有多个这样 的小区，UE应当执行小区重选到R值排序最高的小区。
-在没有配置当前服务NTN小区停止服务时间，或者配置了当前服务NTN小区停止服务时间且在到达当前服务NTN小区停止服务时刻之前的情况下，只有满足以下条件，UE才应当重选到新小区：
在TreselectionRAT时间间隔期间，根据以上小区重选准则，新小区比当前服务小区好；
UE驻留到当前服务小区超过1秒。
应用示例二
本应用示例中，在到达当前NTN广播的停止服务时间的情况下，UE不进行排序，找到一个RSRP/RSRQ满足门限(如满足S准则)的邻区即重选到该小区。具体地，小区重选方法包括以下内容中的至少部分内容。
1、空闲态或非激活态UE接收当前服务NTN小区广播的系统消息，系统消息包括：
a)当前服务NTN小区的停止服务时间(如UTC时间戳)，用于指示当前服务NTN小区的停止服务时间，例如当前服务NTN小区什么时刻停止服务等。
2、该系统消息可以是MIB、SIB1、SIBx等，可以承载于不同的系统消息。
3、启动测量的条件：对于同频或同优先级的异频小区，基于RSRP/RSRQ的S准则，UE决定是否执行邻区测量；且，在停止服务时间之前，UE应当执行邻区测量，具体启动时间可以基于UE实现。
4、后续在UE在进行小区重选时，UE根据当前服务NTN小区广播的上述信息，可以选择合适的NTN设备进行接入：
其中，对于同频或同等优先级的异频邻区，
(1)在当前服务NTN小区停止服务时刻前，UE基于RSRP/RSRQ进行小区重选。
(2)如果到达当前服务NTN小区停止服务时间，采用类似小区选择的方案，找到一个RSRP/RSRQ满足门限(如满足S准则)的邻区即重选到该小区。
其中，步骤4的具体实施过程包括：
对于同频或同等优先级的异频邻区：
-如果没有配置当前服务NTN小区停止服务时间，或者如果配置了当前服务NTN小区停止服务时间，且在到达当前服务NTN小区停止服务时间之前：
UE对所有满足S准则的小区进行排序：利用平均RSRP结果得到Q meas,s和Q meas,n，并计算Rn和Rs值，根据R准则排序。
进一步地，
如果没有配置rangeToBestCell，UE应当执行小区重选到R值排序最高的小区；
如果配置了rangeToBestCell，在与排序最高小区的R值相差rangeToBestCell范围内的所有小区中，UE应当执行小区重选到满足门限(absThreshSS-BlocksConsolidation)的波束数目最多的小区。如果有多个这样的小区，UE应当执行小区重选到R值排序最高的小区。
并且，在上述情况下，只有满足以下条件，UE才应当重选到新小区：在TreselectionRAT时间间隔期间，根据以上小区重选准则，新小区比当前服务小区好；
UE驻留到当前服务小区超过1秒。
-如果配置了当前服务NTN小区停止服务时间，且到达当前服务NTN小区停止服务时刻：
UE应当执行小区重选到除了当前服务NTN小区之外的任意一个满足S准则的小区。
应用示例三
本应用示例中，当前服务NTN小区广播的系统消息指示第一时间门限。
1、空闲态或非激活态UE接收当前服务NTN小区广播的系统消息，系统消息包括：
a)当前服务NTN小区的停止服务时间(如UTC时间戳)，用于指示当前服务NTN小区的停止服务时间，例如当前服务NTN小区什么时刻停止服务等；
b)第一时间门限或第一时间间隔，第一时间门限为当前服务NTN小区的停止服务时间前的某一时刻；第一时间间隔可用于确定第一时间门限。
2、该系统消息可以是MIB、SIB1、SIBx等，可以承载于不同的系统消息。
3、启动测量的条件：对于同频或同优先级的异频小区，基于RSRP/RSRQ的S准则，UE决定是否执行邻区测量；且，在第一时间门限之前，UE应当执行邻区测量，具体启动时间可以基于UE实现。
4、后续在UE在进行小区重选时，UE根据当前服务NTN小区广播的上述信息，可以选择合适的NTN设备进行接入：
对于同频或同等优先级的异频邻区，
(1)在第一时间门限前，UE基于RSRP/RSRQ进行小区重选。
(2a)如果在第一时间门限时或第一时间门限之后，UE基于RSRP排序进行小区重选，但当前服务NTN小区不参与排序(参考应用示例一)
或者，
(2b)如果在第一时间门限时或第一时间门限之后，采用类似小区选择的方案，找到一个RSRP/RSRQ满足门限(如满足S准则)的邻区即重选到该小区(参考应用示例二)。
利用上述至少一个实施例，终端设备可以根据NTN设备发送的第一时间信息进行小区重选，以避免因NTN设备的服务时间有限导致终端设备接入的小区不是最优选择，从而便于终端设备选择到合适的小区驻留。
与上述至少一个实施例的处理方法相对应地，本申请实施例还提供一种终端设备100，参考图5，其包括：
第一通信模块110，用于接收来自NTN设备的第一时间信息，其中，所述第一时间信息与所述NTN设备的停止服务时间相关；
第一处理模块120，于根据所述第一时间信息进行小区重选。
可选地，所述第一时间信息用于指示所述停止服务时间和/或第一时间门限，所述第一时间门限为在所述停止服务时间之前的时间门限。
可选地，所述第一时间信息包括以下信息中的至少一个：
所述停止服务时间；
所述第一时间门限；
第一时间间隔，所述第一时间间隔为所述停止服务时间与所述第一时间门限之间的时间间隔。
可选地，所述第一时间信息由系统消息承载。
可选地，所述系统消息包括以下消息中的至少一个：
主信息块MIB；
系统信息块SIB1；
系统信息块SIBx，其中，x为大于等于2的整数。
可选地，所述第一处理模块120具体用于：
在确定符合第一条件的情况下，根据所述第一时间信息进行小区重选，其中，所述第一条件为启动邻区测量的条件。
可选地，所述第一条件包括以下条件中的至少一个：
与参考信号接收功率RSRP和/或参考信号接收质量RSRQ相关的预定条件；
到达第二时间门限，其中，所述第二时间门限在所述第一时间信息所指示的停止服务时间和/或第一时间门限之前。
可选地，所述第一处理模块120具体用于：
在所述第一时间信息所指示的停止服务时间和/或第一时间门限之前，在当前服务NTN小区和至少一个邻区中确定重选的小区；
和/或，
在到达所述停止服务时间和/或所述第一时间门限的情况下，在至少一个邻区中确定重选的小区。
可选地，在到达所述停止服务时间和/或所述第一时间门限的情况下，所述第一处理模块120具体用于：
根据所述至少一个邻区的测量信息，在所述至少一个邻区中确定重选的小区。
可选地，所述第一处理模块120具体用于：
在所述至少一个邻区包含至少一个同频邻区和/或同等优先级的异频邻区的情况下，根据所述至少一个同频邻区和/或同等优先级的异频邻区的测量信息，确定所述至少一个同频邻区和/或同等优先级的异频邻区的排序；
根据所述至少一个同频邻区和/或同等优先级的异频邻区的排序，在所述至少一个同频邻区和/或同等优先级的异频邻区中确定重选的小区。
可选地，所述第一处理模块120具体用于：
在基于所述至少一个邻区的测量信息确定所述至少一个邻区包含符合预定准则的小区的情况下，将所述符合预定准则的小区确定为重选的小区。
可选地，所述第一处理模块120还用于：
在至少一个邻区中确定重选的小区之后，切换到所述重选的小区。
可选地，所述第一处理模块120还用于：
在当前服务NTN小区和至少一个邻区中确定重选的小区之后，若在预设时间间隔期间，基于所述重选的小区的测量信息和当前服务NTN小区的测量信息确定所述重选的小区优于所述当前服务NTN小区，且所述终端设备驻留在所述当前服务NTN小区的时长超过预定时长，则切换到所述重选的小区。
本申请实施例的终端设备100能够实现前述的方法实施例中的终端设备的对应功能，该终端设备100中的各个模块(子模块、单元或组件等)对应的流程、功能、实现方式以及有益效果，可参见上述方法实施例中的对应描述，此处不进行赘述。需要说明，关于本申请实施例的终端设备100中的各个模块(子模块、单元或组件等)所描述的功能，可以由不同的模块(子模块、单元或组件等)实现，也可以由同一个模块(子模块、单元或组件等)实现，举例来说，第一发送模块与第二发送模块可以是不同的模块，也可以是同一个模块，均能够实现其在本申请实施例中的相应功能。此外，本申请实施例中的通信模块，可通过设备的收发机实现，其余各模块中的部分或全部可通过设备的处理器实现。
图6是根据本申请一实施例的NTN设备200的示意性框图。该NTN设备200可以包括：
第二通信模块210，用于向终端设备发送第一时间信息；
其中，所述第一时间信息与所述NTN设备的停止服务时间相关，所述第一时间信息用于指示所述终端设备进行小区重选。
可选地，所述第一时间信息用于指示所述停止服务时间和/或第一时间门限，其中，所述第一时间门限为在所述停止服务时间之前的时间门限。
可选地，所述第一时间信息包括以下信息中的至少一个：
所述停止服务时间；
所述第一时间门限；
第一时间间隔，所述第一时间间隔为所述停止服务时间与所述第一时间门限之间的时间间隔。
可选地，所述第一时间信息由系统消息承载。
可选地，系统消息包括以下消息中的至少一个：
主信息块MIB；
系统信息块SIB1；
系统信息块SIBx，其中，x为大于等于2的整数。
本申请实施例的NTN设备200能够实现前述的方法实施例中的NTN设备的对应功能。该NTN设备200中的各个模块(子模块、单元或组件等)对应的流程、功能、实现方式以及有益效果，可参见上述方法实施例中的对应描述，在此不再赘述。需要说明，关于申请实施例的NTN设备200中的各个模块(子模块、单元或组件等)所描述的功能，可以由不同的模块(子模块、单元或组件等)实现，也可以由同一个模块(子模块、单元或组件等)实现，举例来说，第一发送模块与第二发送模块可以是不同的模块，也可以是同一个模块，均能够实现其在本申请实施例中的相应功能。此外，本申请实施例中的通信模块，可通过设备的收发机实现，其余各模块中的部分或全部可通过设备的处理器实现。
图7是根据本申请实施例的通信设备600示意性结构图，其中通信设备600包括处理器610，处理器610可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，通信设备600还可以包括存储器620。其中，处理器610可以从存储器620中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器620可以是独立于处理器610的一个单独的器件，也可以集成在处理器610中。
可选地，通信设备600还可以包括收发器630，处理器610可以控制该收发器630与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器630可以包括发射机和接收机。收发器630还可以进一步包括天线，天线的数量可以为一个或多个。
可选地，该通信设备600可为本申请实施例的NTN设备，并且该通信设备600可以实现本申请实施例的各个方法中由NTN设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该通信设备600可为本申请实施例的终端设备，并且该通信设备600可以实现本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
图8是根据本申请实施例的芯片700的示意性结构图，其中芯片700包括处理器710，处理器710可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，芯片700还可以包括存储器720。其中，处理器710可以从存储器720中 调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器720可以是独立于处理器710的一个单独的器件，也可以集成在处理器710中。
可选地，该芯片700还可以包括输入接口730。其中，处理器710可以控制该输入接口730与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
可选地，该芯片700还可以包括输出接口740。其中，处理器710可以控制该输出接口740与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
可选地，该芯片可应用于本申请实施例中的NTN设备，并且该芯片可以实现本申请实施例的各个方法中由NTN设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该芯片可应用于本申请实施例中的终端设备，并且该芯片可以实现本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
上述提及的处理器可以是通用处理器、数字信号处理器(digital signal processor，DSP)、现成可编程门阵列(field programmable gate array，FPGA)、专用集成电路(application specific integrated circuit，ASIC)或者其他可编程逻辑器件、晶体管逻辑器件、分立硬件组件等。其中，上述提到的通用处理器可以是微处理器或者也可以是任何常规的处理器等。
上述提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)。
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
图9是根据本申请实施例的通信系统800的示意性框图，该通信系统800包括终端设备810和NTN设备820。
其中，该终端设备810可以用于实现本申请各个实施例的方法中由终端设备实现的相应的功能，以及该NTN设备820可以用于实现本申请各个实施例的方法中由NTN设备实现的相应的功能。为了简洁，在此不再赘述。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行该计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。该计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。该计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，该计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光 纤、数字用户线(Digital Subscriber Line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。该计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。该可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
所属技术领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
以上所述仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以该权利要求的保护范围为准。

Claims (43)

  1. 一种小区重选方法，包括：
    终端设备接收来自非地面通信网络NTN设备的第一时间信息，其中，所述第一时间信息与所述NTN设备的停止服务时间相关；
    所述终端设备根据所述第一时间信息进行小区重选。
  2. 根据权利要求1所述的方法，其中，所述第一时间信息用于指示所述停止服务时间和/或第一时间门限，所述第一时间门限为在所述停止服务时间之前的时间门限。
  3. 根据权利要求2所述的方法，其中，所述第一时间信息包括以下信息中的至少一个：
    所述停止服务时间；
    所述第一时间门限；
    第一时间间隔，所述第一时间间隔为所述停止服务时间与所述第一时间门限之间的时间间隔。
  4. 根据权利要求1-3中任一项所述的方法，其中，所述终端设备根据所述第一时间信息进行小区重选，包括：
    在确定符合第一条件的情况下，所述终端设备根据所述第一时间信息进行小区重选，其中，所述第一条件为启动邻区测量的条件。
  5. 根据权利要求4所述的方法，其中，所述第一条件包括以下条件中的至少一个：
    与参考信号接收功率RSRP和/或参考信号接收质量RSRQ相关的预定条件；
    到达第二时间门限，其中，所述第二时间门限在所述第一时间信息所指示的停止服务时间和/或第一时间门限之前。
  6. 根据权利要求1-5中任一项所述的方法，其中，所述终端设备根据所述第一时间信息进行小区重选，包括：
    在所述第一时间信息所指示的停止服务时间和/或第一时间门限之前，所述终端设备在当前服务NTN小区和至少一个邻区中确定重选的小区；
    和/或，
    在到达所述停止服务时间和/或所述第一时间门限的情况下，所述终端设备在至少一个邻区中确定重选的小区。
  7. 根据权利要求6所述的方法，其中，所述终端设备在至少一个邻区中确定重选的小区，包括：
    所述终端设备根据所述至少一个邻区的测量信息，在所述至少一个邻区中确定重选的小区。
  8. 根据权利要求7所述的方法，其中，所述终端设备根据所述至少一个邻区的测量信息，在所述至少一个邻区中确定重选的小区，包括：
    在所述至少一个邻区包含至少一个同频邻区和/或同等优先级的异频邻区的情况下，所述终端设备根据所述至少一个同频邻区和/或同等优先级的异频邻区的测量信息，确定所述至少一个同频邻区和/或同等优先级的异频邻区的排序；
    所述终端设备根据所述至少一个同频邻区和/或同等优先级的异频邻区的排序，在所述至少一个同频邻区和/或同等优先级的异频邻区中确定重选的小区。
  9. 根据权利要求7所述的方法，其中，所述终端设备根据所述至少一个邻区的测量信息，在所述至少一个邻区中确定重选的小区，包括：
    在基于所述至少一个邻区的测量信息确定所述至少一个邻区包含符合预定准则的小区的情况下，所述终端设备将所述符合预定准则的小区确定为重选的小区。
  10. 根据权利要求6-9中任一项所述的方法，其中，在所述终端设备在至少一个邻区中确定重选的小区之后，所述方法还包括：
    所述终端设备切换到所述重选的小区。
  11. 根据权利要求6-10中任一项所述的方法，其中，在所述终端设备在当前服务NTN小区和至少一个邻区中确定重选的小区之后，所述方法还包括：
    若在预设时间间隔期间，基于所述重选的小区的测量信息和当前服务NTN小区的测量信息确定所述重选的小区优于所述当前服务NTN小区，且所述终端设备驻留在所述当前服务NTN小区的时长超过预定时长，则所述终端设备切换到所述重选的小区。
  12. 根据权利要求1-11中任一项所述的方法，其中，所述第一时间信息由系统消息承载。
  13. 根据权利要求12所述的方法，其中，所述系统消息包括以下消息中的至少一个：
    主信息块MIB；
    系统信息块SIB1；
    系统信息块SIBx，其中，x为大于等于2的整数。
  14. 一种小区重选方法，包括：
    NTN设备向终端设备发送第一时间信息；
    其中，所述第一时间信息与所述NTN设备的停止服务时间相关，所述第一时间信息用于指示所述终端设备进行小区重选。
  15. 根据权利要求14所述的方法，其中，所述第一时间信息用于指示所述停止服务时间和/或第一时间门限，其中，所述第一时间门限为在所述停止服务时间之前的时间门限。
  16. 根据权利要求15所述的方法，其中，所述第一时间信息包括以下信息中的至少一个：
    所述停止服务时间；
    所述第一时间门限；
    第一时间间隔，所述第一时间间隔为所述停止服务时间与所述第一时间门限之间的时间间隔。
  17. 根据权利要求14-16中任一项所述的方法，其中，所述第一时间信息由系统消息承载。
  18. 根据权利要求17所述的方法，其中，所述系统消息包括以下消息中的至少一个：
    主信息块MIB；
    系统信息块SIB1；
    系统信息块SIBx，其中，x为大于等于2的整数。
  19. 一种终端设备，包括：
    第一通信模块，用于接收来自NTN设备的第一时间信息，其中，所述第一时间信息与所述NTN设备的停止服务时间相关；
    第一处理模块，用于根据所述第一时间信息进行小区重选。
  20. 根据权利要求19所述的终端设备，其中，所述第一时间信息用于指示所述停止服务时间和/或第一时间门限，所述第一时间门限为在所述停止服务时间之前的时间门限。
  21. 根据权利要求19或20所述的终端设备，其中，所述第一时间信息包括以下信息中的至少一个：
    所述停止服务时间；
    所述第一时间门限；
    第一时间间隔，所述第一时间间隔为所述停止服务时间与所述第一时间门限之间的时间间隔。
  22. 根据权利要求19-21中任一项所述的终端设备，其中，所述第一处理模块具体用于：
    在确定符合第一条件的情况下，根据所述第一时间信息进行小区重选，其中，所述第一条件为启动邻区测量的条件。
  23. 根据权利要求22所述的终端设备，其中，所述第一条件包括以下条件中的至少一个：
    与参考信号接收功率RSRP和/或参考信号接收质量RSRQ相关的预定条件；
    到达第二时间门限，其中，所述第二时间门限在所述第一时间信息所指示的停止服务时间和/或第一时间门限之前。
  24. 根据权利要求19-23中任一项所述的终端设备，其中，所述第一处理模块具体用于：
    在所述第一时间信息所指示的停止服务时间和/或第一时间门限之前，在当前服务NTN小区和至少一个邻区中确定重选的小区；
    和/或，
    在到达所述停止服务时间和/或所述第一时间门限的情况下，在至少一个邻区中确定重选的小区。
  25. 根据权利要求24所述的终端设备，其中，在到达所述停止服务时间和/或所述第一时间门限的情况下，所述第一处理模块具体用于：
    根据所述至少一个邻区的测量信息，在所述至少一个邻区中确定重选的小区。
  26. 根据权利要求25所述的终端设备，其中，所述第一处理模块具体用于：
    在所述至少一个邻区包含至少一个同频邻区和/或同等优先级的异频邻区的情况下，根据所述至少一个同频邻区和/或同等优先级的异频邻区的测量信息，确定所述至少一个同频邻区和/或同等优先级的异频邻区的排序；
    根据所述至少一个同频邻区和/或同等优先级的异频邻区的排序，在所述至少一个同频邻区和/或同等优先级的异频邻区中确定重选的小区。
  27. 根据权利要求25所述的终端设备，其中，所述第一处理模块具体用于：
    在基于所述至少一个邻区的测量信息确定所述至少一个邻区包含符合预定准则的小区的情况下，将所述符合预定准则的小区确定为重选的小区。
  28. 根据权利要求24-27中任一项所述的终端设备，其中，所述第一处理模块还用于：
    在至少一个邻区中确定重选的小区之后，切换到所述重选的小区。
  29. 根据权利要求24-27中任一项所述的终端设备，其中，所述第一处理模块还用于：
    在当前服务NTN小区和至少一个邻区中确定重选的小区之后，若在预设时间间隔期间，基于所述重选的小区的测量信息和当前服务NTN小区的测量信息确定所述重选的小区优于所述当前服务NTN小区，且所述终端设备驻留在所述当前服务NTN小区的时长超过预定时长，则切换到所述重选的小区。
  30. 根据权利要求19-29中任一项所述的终端设备，其中，所述第一时间信息由系统消息承载。
  31. 根据权利要求30所述的终端设备，其中，所述系统消息包括以下消息中的至 少一个：
    主信息块MIB；
    系统信息块SIB1；
    系统信息块SIBx，其中，x为大于等于2的整数。
  32. 一种NTN设备，包括：
    第二通信模块，用于向终端设备发送第一时间信息；
    其中，所述第一时间信息与所述NTN设备的停止服务时间相关，所述第一时间信息用于指示所述终端设备进行小区重选。
  33. 根据权利要求32所述的NTN设备，其中，所述第一时间信息用于指示所述停止服务时间和/或第一时间门限，其中，所述第一时间门限为在所述停止服务时间之前的时间门限。
  34. 根据权利要求33所述的NTN设备，其中，所述第一时间信息包括以下信息中的至少一个：
    所述停止服务时间；
    所述第一时间门限；
    第一时间间隔，所述第一时间间隔为所述停止服务时间与所述第一时间门限之间的时间间隔。
  35. 根据权利要求32-34中任一项所述的NTN设备，其中，所述第一时间信息由系统消息承载。
  36. 根据权利要求35所述的NTN设备，其中，所述系统消息包括以下消息中的至少一个：
    主信息块MIB；
    系统信息块SIB1；
    系统信息块SIBx，其中，x为大于等于2的整数。
  37. 一种终端设备，包括：处理器和存储器，所述存储器用于存储计算机程序，所述处理器调用并运行所述存储器中存储的计算机程序，执行如权利要求1至13中任一项所述的方法的步骤。
  38. 一种NTN设备，包括：处理器和存储器，所述存储器用于存储计算机程序，所述处理器调用并运行所述存储器中存储的计算机程序，执行如权利要求14至18中任一项所述的方法的步骤。
  39. 一种芯片，包括：
    处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至18中任一项所述的方法的步骤。
  40. 一种计算机可读存储介质，用于存储计算机程序，其中，
    所述计算机程序使得计算机执行如权利要求1至18中任一项所述的方法的步骤。
  41. 一种计算机程序产品，包括计算机程序指令，其中，
    所述计算机程序指令使得计算机执行如权利要求1至18中任一项所述的方法的步骤。
  42. 一种计算机程序，所述计算机程序使得计算机执行如权利要求1至18中任一项所述的方法的步骤。
  43. 一种通信系统，包括：
    终端设备，用于执行如权利要求1至13中任一项所述的方法；
    NTN设备，用于执行如权利要求14至18中任一项所述的方法。
PCT/CN2021/103138 2021-06-29 2021-06-29 小区重选方法、终端设备、ntn设备、芯片和存储介质 WO2023272490A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2021/103138 WO2023272490A1 (zh) 2021-06-29 2021-06-29 小区重选方法、终端设备、ntn设备、芯片和存储介质
CN202180096034.3A CN117178593A (zh) 2021-06-29 2021-06-29 小区重选方法、终端设备、ntn设备、芯片和存储介质

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/103138 WO2023272490A1 (zh) 2021-06-29 2021-06-29 小区重选方法、终端设备、ntn设备、芯片和存储介质

Publications (1)

Publication Number Publication Date
WO2023272490A1 true WO2023272490A1 (zh) 2023-01-05

Family

ID=84689740

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/103138 WO2023272490A1 (zh) 2021-06-29 2021-06-29 小区重选方法、终端设备、ntn设备、芯片和存储介质

Country Status (2)

Country Link
CN (1) CN117178593A (zh)
WO (1) WO2023272490A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117528710B (zh) * 2024-01-05 2024-05-03 广东世炬网络科技股份有限公司 基于管理平台的终端ntn小区选择方法、装置、设备及介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111565428A (zh) * 2019-02-14 2020-08-21 华为技术有限公司 小区重选方法以及装置
CN111800830A (zh) * 2019-04-08 2020-10-20 华为技术有限公司 一种通信方法及装置
CN112153706A (zh) * 2019-06-28 2020-12-29 华为技术有限公司 一种ntn中小区选择的方法及装置
WO2021066696A1 (en) * 2019-10-03 2021-04-08 Telefonaktiebolaget Lm Ericsson (Publ) Methods for updating ephemeris data in a non-terrestrial network (ntn)

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111565428A (zh) * 2019-02-14 2020-08-21 华为技术有限公司 小区重选方法以及装置
CN111800830A (zh) * 2019-04-08 2020-10-20 华为技术有限公司 一种通信方法及装置
CN112153706A (zh) * 2019-06-28 2020-12-29 华为技术有限公司 一种ntn中小区选择的方法及装置
WO2021066696A1 (en) * 2019-10-03 2021-04-08 Telefonaktiebolaget Lm Ericsson (Publ) Methods for updating ephemeris data in a non-terrestrial network (ntn)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ZTE CORPORATION, SANECHIPS: "Discussion on cell selection and reselection in NTN", 3GPP DRAFT; R2-2101196, vol. RAN WG2, 15 January 2021 (2021-01-15), pages 1 - 8, XP051974174 *

Also Published As

Publication number Publication date
CN117178593A (zh) 2023-12-05

Similar Documents

Publication Publication Date Title
US8320909B2 (en) Expanded cell search and selection in a mobile wireless device
WO2022143564A1 (zh) 一种小区选择方法及装置
WO2020192454A1 (zh) 小区选择方法及设备
WO2021062729A1 (zh) 一种切换处理方法、通信设备、终端设备
WO2021159535A1 (zh) 小区重选方法及装置
US20230209426A1 (en) Cell reselection method, terminal device, and network device
WO2021062599A1 (zh) 通信方法、小区测量的方法与通信装置
US20230138812A1 (en) Wireless communication method, terminal device, and network device
WO2022143563A1 (zh) 一种小区选择方法及装置
CN114342469B (zh) 小区选择的方法与通信装置
WO2023272490A1 (zh) 小区重选方法、终端设备、ntn设备、芯片和存储介质
WO2022027330A1 (zh) 一种小区选择方法及相关设备
WO2022001764A1 (zh) 一种小区选择方法及装置
US20220256424A1 (en) Cell selection method and apparatus, device, and storage medium
US20240064629A1 (en) Cell determination method and electronic device
WO2023082191A1 (zh) 一种无线通信方法、装置、通信设备及存储介质
WO2022198544A1 (zh) 无线通信方法、终端设备和网络设备
WO2023097503A1 (zh) Ntn中非连接态终端的rrm测量方式确定方法、装置及介质
WO2022206557A1 (zh) 一种通信方法及装置
WO2023092455A1 (zh) 无线通信方法、第一终端设备和网络设备
WO2023039897A1 (zh) 确定寻呼载波的方法、终端设备和网络设备
WO2023102728A1 (zh) Ntn中调整门限的方法、装置、设备及存储介质
WO2023092456A1 (zh) 无线通信的方法、终端设备和网络设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21947450

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE