Cell reselection method and device, and storage medium

Abstract

Embodiments of the present application provide a cell reselection method and device, and a storage medium. The method comprises: a network device sends first information to a terminal device, the first information comprising one or more reselection-related configurations; the terminal device accurately performs cell reselection on the basis of the reselection-related configurations. In this way, the cell reselection frequency can be reduced.

Description

A cell reselection method, device and storage medium

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on February 9, 2024, with application number 202410179007.8 and application name “A cell reselection method, device and storage medium”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a cell reselection method, device, and storage medium. Background Art

[0003] In a terrestrial network communication system, when a terminal device moves at a relatively fast speed, the terminal device can judge its own motion state based on the number of times it performs cell reselection, determine the applicable cell reselection judgment time and cell reselection hysteresis parameters based on the motion state, and determine whether cell reselection is needed based on the cell reselection judgment time and cell reselection hysteresis parameters.

[0004] In a non-terrestrial network (NTN) communication system, a terminal device cannot determine its own motion state based on the mechanism in the terrestrial network communication system, and thus cannot accurately reselect a cell, which may result in a high frequency of cell reselection. Summary of the Invention

[0005] The embodiments of the present application provide a cell reselection method, device and storage medium, in which a terminal device can receive a reselection-related configuration sent by a network device, and can accurately perform cell reselection based on the reselection-related configuration, thereby reducing the frequency of cell reselection.

[0006] In a first aspect, an embodiment of the present application provides a cell reselection method, including: receiving first information, the first information including one or more reselection-related configurations, the first information being applied to an Internet of Things terminal device or a non-Internet of Things terminal device; and performing cell reselection based on the first information.

[0007] In one possible implementation, each reselection-related configuration includes at least one of the following: a first cell reselection judgment time; a first time offset value; a first cell reselection hysteresis parameter; a first hysteresis parameter offset value; a first cell quality offset value; and a first quality parameter offset value.

[0008] In a possible implementation, each reselection-related configuration includes a plurality of reselection parameter information, and the parameters in each reselection parameter information are applicable to different speeds.

[0009] In one possible implementation, each reselection parameter information includes at least one of the following: second cell reselection judgment time; second time offset value; second cell reselection hysteresis parameter; second hysteresis parameter offset value; second cell quality offset; second quality parameter offset value.

[0010] In one possible implementation, the first information also includes multiple ephemeris maps, including an ephemeris map of a serving cell and an ephemeris map of a neighboring cell, wherein each ephemeris map includes at least one of the following: the position of the access network device, the speed of the access network device, or the orbit of the access network device.

[0011] In a possible implementation, the first information further includes multiple speed thresholds, and each speed threshold corresponds to a different motion state.

[0012] In one possible implementation, performing cell reselection based on the first information includes: for any cell, determining the motion state of the terminal device based on the ephemeris map associated with the cell, the speed of the terminal device and multiple speed thresholds; determining reselection parameter information based on the motion state of the terminal device; and performing cell reselection based on the reselection parameter information corresponding to the terminal device in each cell.

[0013] In one possible implementation, the motion state of the terminal device is determined based on the ephemeris map associated with the cell, the speed of the terminal and multiple speed thresholds, including: determining the relative speed between the terminal device and the access network device based on the ephemeris map associated with the cell and the speed of the terminal device; and determining the motion state of the terminal device based on the relationship between the relative speed and multiple speed thresholds.

[0014] In one possible implementation, the first information also includes a first duration and / or a second duration, the first duration being the duration during which the cell selection criteria are not measured when the terminal device is not resident in the cell, and the second duration being the duration during which the cell reselection criteria are not measured when the terminal device is resident in the cell.

[0015] In a second aspect, an embodiment of the present application provides a cell reselection method, including: determining first information, the first information including one or more reselection-related configurations, the first information being applied to an IoT terminal device or a non-IoT terminal device; and sending the first information.

[0016] In one possible implementation, each reselection-related configuration includes at least one of the following: a first cell reselection judgment time; a first time offset value; a first cell reselection hysteresis parameter; a first hysteresis parameter offset value; a first cell quality offset value; and a first quality parameter offset value.

[0017] In a possible implementation, each reselection-related configuration includes a plurality of reselection parameter information, and the parameters in each reselection parameter information are applicable to different speeds.

[0018] In one possible implementation, each reselection parameter information includes at least one of the following: second cell reselection judgment time; second time offset value; second cell reselection hysteresis parameter; second hysteresis parameter offset value; second cell quality offset; second quality parameter offset value.

[0019] In one possible implementation, the first information also includes multiple ephemeris maps, including an ephemeris map of a serving cell and an ephemeris map of a neighboring cell, wherein each ephemeris map includes at least one of the following: the position of the access network device, the speed of the access network device, or the orbit of the access network device.

[0020] In a possible implementation, the first information further includes multiple speed thresholds, and each speed threshold corresponds to a different motion state.

[0021] In one possible implementation, the first information also includes a first duration and / or a second duration, the first duration being the duration during which the cell selection criteria are not measured when the terminal device is not resident in the cell, and the second duration being the duration during which the cell reselection criteria are not measured when the terminal device is resident in the cell.

[0022] In a third aspect, an embodiment of the present application provides a cell reselection device, including: a communication module for receiving first information, the first information including one or more reselection-related configurations, the first information being applied to an Internet of Things terminal device or a non-Internet of Things terminal device; a processing module for performing cell reselection based on the first information.

[0023] In one possible implementation, each reselection-related configuration includes at least one of the following: a first cell reselection judgment time; a first time offset value; a first cell reselection hysteresis parameter; a first hysteresis parameter offset value; a first cell quality offset value; and a first quality parameter offset value.

[0024] In a possible implementation, each reselection-related configuration includes a plurality of reselection parameter information, and the parameters in each reselection parameter information are applicable to different speeds.

[0025] In one possible implementation, each reselection parameter information includes at least one of the following: second cell reselection judgment time; second time offset value; second cell reselection hysteresis parameter; second hysteresis parameter offset value; second cell quality offset; second quality parameter offset value.

[0026] In one possible implementation, the first information also includes multiple ephemeris maps, including an ephemeris map of a serving cell and an ephemeris map of a neighboring cell, wherein each ephemeris map includes at least one of the following: the position of the access network device, the speed of the access network device, or the orbit of the access network device.

[0027] In a possible implementation, the first information further includes multiple speed thresholds, and each speed threshold corresponds to a different motion state.

[0028] In one possible implementation, the processing module is specifically used to: for any cell, determine the motion state of the terminal device based on the ephemeris map associated with the cell, the speed of the terminal device and multiple speed thresholds; determine reselection parameter information based on the motion state of the terminal device; and perform cell reselection based on the reselection parameter information corresponding to each cell of the terminal device.

[0029] In one possible implementation, the processing module is specifically used to: determine the relative speed of the terminal device and the access network device based on the ephemeris map associated with the cell and the speed of the terminal device; and determine the motion state of the terminal device based on the relationship between the relative speed and multiple speed thresholds.

[0030] In one possible implementation, the first information also includes a first duration and / or a second duration, the first duration being the duration during which the cell selection criteria are not measured when the terminal device is not resident in the cell, and the second duration being the duration during which the cell reselection criteria are not measured when the terminal device is resident in the cell.

[0031] In a fourth aspect, an embodiment of the present application provides a cell reselection device, including: a determination module for determining first information, the first information including one or more reselection-related configurations, and the first information is applied to an IoT terminal device or a non-IoT terminal device; a communication module for sending the first information.

[0032] In one possible implementation, each reselection-related configuration includes at least one of the following: a first cell reselection judgment time; a first time offset value; a first cell reselection hysteresis parameter; a first hysteresis parameter offset value; a first cell quality offset value; and a first quality parameter offset value.

[0033] In a possible implementation, each reselection-related configuration includes a plurality of reselection parameter information, and the parameters in each reselection parameter information are applicable to different speeds.

[0034] In one possible implementation, each reselection parameter information includes at least one of the following: second cell reselection judgment time; second time offset value; second cell reselection hysteresis parameter; second hysteresis parameter offset value; second cell quality offset; second quality parameter offset value.

[0035] In one possible implementation, the first information also includes multiple ephemeris maps, including an ephemeris map of a serving cell and an ephemeris map of a neighboring cell, wherein each ephemeris map includes at least one of the following: the position of the access network device, the speed of the access network device, or the orbit of the access network device.

[0036] In a possible implementation, the first information further includes multiple speed thresholds, and each speed threshold corresponds to a different motion state.

[0037] In one possible implementation, the first information also includes a first duration and / or a second duration, the first duration being the duration during which the cell selection criteria are not measured when the terminal device is not resident in the cell, and the second duration being the duration during which the cell reselection criteria are not measured when the terminal device is resident in the cell.

[0038] In the fifth aspect, an embodiment of the present application provides a terminal device, comprising: a processor and a memory; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory, so that the terminal device executes the method described in the first aspect or any possible implementation of the first aspect.

[0039] In the sixth aspect, an embodiment of the present application provides a network device, comprising: a processor and a memory; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory, so that the network device performs the method described in the second aspect or any possible implementation of the second aspect.

[0040] In the seventh aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program or instructions. When the computer program or instructions are executed by a processor, the method described in the first aspect or any possible implementation of the first aspect is implemented, or the method described in the second aspect or any possible implementation of the second aspect is implemented.

[0041] In an eighth aspect, an embodiment of the present application provides a computer program product, which includes a computer program. When the computer program is run, it enables the computer to execute the method described in the first aspect or any possible implementation of the first aspect, or enables the computer to execute the method described in the second aspect or any possible implementation of the second aspect.

[0042] In a ninth aspect, an embodiment of the present application provides a chip or chip system, which includes at least one processor and a communication interface, wherein the communication interface and the at least one processor are interconnected by a line, and the at least one processor is used to run a computer program or instruction to execute the method described in the first aspect or any possible implementation of the first aspect, or to execute the method described in the second aspect or any possible implementation of the second aspect. The communication interface in the chip can be an input / output interface, a pin, or a circuit, etc.

[0043] Embodiments of the present application provide a cell reselection method, device, and storage medium. The method includes: a network device sending first information to a terminal device, the first information including one or more reselection-related configurations, so that the terminal device can accurately reselect a cell based on the reselection-related configurations, thereby reducing the frequency of cell reselection. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] FIG1 is an architecture diagram of a communication system provided in an embodiment of the present application;

[0045] FIG2 is a schematic diagram of a cell reselection method provided in an embodiment of the present application;

[0046] FIG3 is a schematic structural diagram of a cell reselection device provided in an embodiment of the present application;

[0047] FIG4 is a schematic structural diagram of another cell reselection device according to an embodiment of the present application;

[0048] FIG5 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0049] FIG6 is a schematic diagram of the structure of a network device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] To facilitate a clear description of the technical solutions of the embodiments of the present application, some of the terms and technologies involved in the embodiments of the present application are briefly introduced as follows:

[0051] 1. Cell reselection

[0052] A terminal device in the radio resource control (RRC) idle state or RRC inactive state can measure the signal quality of the serving cell and the neighboring cell. If the signal quality of the serving cell is poor and the signal quality of the neighboring cell is good, the terminal device will actively reselect a cell with a higher priority or better signal quality as the serving cell. This process can be called cell reselection.

[0053] The cell reselection process includes three stages: starting neighbor cell measurement (determining whether to start neighbor cell measurement based on the measurement start conditions), reselection evaluation and judgment (determining whether the neighbor cell signal quality meets the cell reselection criteria, if it does, then cell reselection is performed; otherwise, the cell remains in the current cell), and cell reselection execution (receiving system information from the target cell, and if the target cell has no access restrictions, then the cell remains in the new cell).

[0054] Start neighbor cell measurement: If the neighbor cell priority is higher than the serving cell, neighbor cell measurement is started unconditionally. If the neighbor cell priority is lower than or equal to the serving cell, the signal quality of the serving cell is compared with the threshold issued by the network. Neighbor cell measurement is started only when it is lower than or equal to the threshold.

[0055] Reselection evaluation and decision: For high-priority neighboring cells, cell reselection is performed when the signal quality of the neighboring cell exceeds the network-configured high-priority reselection threshold for a certain sustained time interval, and the terminal device resides in the current serving cell for more than 1 second. For neighboring cells of the same priority, the R criterion is used for ranking: the cell signal quality level of each neighboring cell that meets the cell selection criteria and the current serving cell is calculated. Then, based on the cell signal quality level, the cell with the highest cell signal quality level is selected, or in multi-beam operation, cells within a certain range of the maximum are selected. Among these cells, the cell with the largest number of beams meeting the required beam signal quality is selected as the best cell. If this best cell continuously meets the cell reselection criteria for a certain sustained time interval, and the terminal device resides in the current serving cell for more than 1 second, the terminal device initiates cell reselection to this neighboring cell. For low-priority cells, reselection to the low-priority cell occurs only when none of the high-priority cells or cells of the same priority meet the cell reselection criteria, the serving cell signal quality is below a certain threshold, the low-priority cell signal quality is above a certain threshold for a certain sustained time interval, and the terminal device resides in the current serving cell for more than 1 second.

[0056] Cell reselection execution: After completing the above-mentioned neighboring cell measurement and determining that there is a new cell that meets the cell reselection criteria, the terminal device attempts to reside in the new cell, receives the system message of the cell, and after determining that the cell allows residency, it can reside in the new cell.

[0057] The cell reselection priority mentioned above is related to the frequency of the cell. Cells on the same frequency on the same radio access technology (RAT) have the same cell reselection priority, while cells on different frequencies may have the same or different reselection priorities. That is, for same-frequency neighboring cells, they have the same cell priority; for different-frequency cells, they can be divided into high-priority neighboring cells, same-priority neighboring cells, and low-priority neighboring cells. The cell reselection priority can be obtained from the system information of the serving cell or through dedicated signaling.

[0058] 2. Signal quality

[0059] In the embodiment of the present application, the signal quality of the serving cell / neighboring cell may be a cell selection RX level value (Srxlev) or a cell selection quality value (Squal).

[0060] 3. Same frequency measurement

[0061] The measurement of the neighboring cells on the frequency point where the serving frequency point is located includes the measurement of the neighboring cells for which the system information block (SIB) 3 indicates that intra-frequency measurement is allowed.

[0062] 4. Different frequency measurement

[0063] The measurement of neighboring cells on new radio (NR) frequencies with different serving frequencies includes the measurement of neighboring cells on inter-frequency frequencies indicated in SIB4.

[0064] 5. Heterogeneous system measurement

[0065] Measurement of neighboring cells on different system frequencies, including measurement of neighboring cells on the EUTRA frequency indicated in SIB5.

[0066] 7. Internet of Things (IoT)

[0067] The IoT is a crucial component of future information technology development. Its primary technical feature is connecting objects to the internet through communications, enabling intelligent networks that interconnect humans and machines, and objects and things. IoT technology, for example, leverages narrowband (NB) technology to achieve massive connectivity, deep coverage, and power-saving devices.

[0068] 6. Other terms

[0069] In the embodiments of the present application, terms such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. For example, the first parameter and the second parameter are merely used to distinguish different parameters and do not limit their order. Those skilled in the art will understand that terms such as "first" and "second" do not limit the quantity or execution order, and that terms such as "first" and "second" do not necessarily define differences.

[0070] It should be noted that in the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0071] In the embodiments of the present application, "at least one" refers to one or more, and "more" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0072] In order to better understand the cell reselection method provided in the embodiment of the present application, the communication system architecture of the embodiment of the present application is first described below.

[0073] Figure 1 is an architectural diagram of a communication system provided by an embodiment of the present application. As shown in Figure 1 , the communication system 100 includes a satellite 101, a terminal device 102, a gateway 103, and a core network device 104. Satellite 101 can communicate with terminal device 102 via a service link, satellite 101 can communicate with gateway 103 via a feeder link, and gateway 103 can communicate with core network device 104.

[0074] In the above communication system, the satellite 101 has some or all functions of an access network device and can be called a satellite base station. It can provide wireless access services and schedule wireless resources for terminals accessing the network through the satellite base station.

[0075] Satellite systems use both wide and narrow beams. Wide beams offer a wide coverage area. A satellite can include one or more wide beams, which together constitute the entire satellite's coverage area. Narrow beams (also known as hopping beams) offer a much smaller coverage area. The coverage area of ​​a hopping beam is called a beam position, and a satellite's coverage area can contain hundreds of beam positions. One or more beam positions correspond to a cell. Beam hopping uses a hopping method to serve the entire satellite's coverage area, meaning it may cover one beam position at a given moment and another beam position at the next.

[0076] It should be noted that, for ease of understanding, Figure 1 only shows the number of terminals, satellites, gateways and core network devices by way of example. The communication system 100 may also include other numbers of satellites and the coverage area of ​​each satellite may include other numbers of terminal devices, and other access network devices may also be used to replace satellites. This is not limited to the embodiments of the present application.

[0077] The terminal device involved in the embodiments of the present application can also be referred to as a terminal, which can be a device with wireless transceiver capabilities. It can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it can also be deployed on the water (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons, and satellites, etc.). The terminal device can be user equipment (UE), where UE includes handheld devices, vehicle-mounted devices, wearable devices, or computing devices with wireless communication capabilities. Exemplarily, the UE can be a mobile phone, a tablet computer, or a computer with wireless transceiver capabilities. The terminal device can also be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in unmanned driving, a wireless terminal device in telemedicine, a wireless terminal device in a smart grid, a wireless terminal device in a smart city, a wireless terminal device in a smart home, etc. In addition, the terminal device can also be a terminal device in an IoT system. For example, smart speakers, smart lighting, smart refrigerators, smart air conditioners, etc. In an embodiment of the present application, the device for realizing the function of the terminal device may be the terminal device; or it may be a device that can support the terminal device to realize the function, such as a chip system, which may be installed in the terminal device.

[0078] The access network device involved in the embodiments of the present application may be a satellite, an aircraft, an unmanned aerial system (UAS), or other mobile network equipment (such as a bus, subway, high-speed rail, etc.). Alternatively, the access network device may be a device provided on a satellite, an aircraft, a UAS, or other mobile network equipment, and having a wireless transceiver function, or a chip or chip system that may be provided on the device. Satellites may include geostationary earth orbit (GEO) satellites, medium earth orbit (MEO) satellites, and low earth orbit (LEO) satellites.

[0079] The technical solution provided in the embodiment of the present application can be applied to the LTE architecture, and can also be applied to the UMTS terrestrial radio access network (UTRAN) architecture, or the GSM EDGE radio access network (GERAN) architecture of the global system for mobile communication (GSM) / enhanced data rate for GSM evolution (EDGE) system. In addition, the technical solution provided in the embodiment of the present application can also be applied to any other wireless communication system with similar structure and function, such as a public land mobile network (PLMN) system, a 5G communication system or a communication system after 5G, such as 6G, etc., and the embodiment of the present application does not impose any restrictions on this. Among them, the 5G mobile communication system can be a non-standalone (NSA) or an independent network (SA).

[0080] Wireless communication between communication devices may include: wireless communication between network devices and terminal devices, wireless communication between network devices and network devices, and wireless communication between terminal devices. In the embodiments of the present application, the term "wireless communication" may also be referred to as "communication", and the term "communication" may also be described as "data transmission", "information transmission" or "transmission". Those skilled in the art may apply the technical solutions provided in the embodiments of the present application to wireless communication between network devices and terminal devices, such as wireless communication between access network devices and terminal devices.

[0081] In non-terrestrial network communication systems, the terminal device itself cannot judge its own motion state based on the mechanism in the terrestrial network communication system, and thus cannot accurately reselect a cell, which may lead to a high frequency of cell reselection.

[0082] Based on the above technical problems, an embodiment of the present application provides a cell reselection method, the main inventive idea of ​​which is as follows: a network device sends first information to a terminal device, the first information includes one or more reselection-related configurations, and the terminal device can accurately reselect a cell based on the reselection-related configurations, thereby reducing the frequency of cell reselection.

[0083] It should be noted that the communication system to which the cell reselection method of the present application is applicable may be a non-terrestrial network communication system.

[0084] The technical solutions shown in this application are described in detail below through specific embodiments. It should be noted that the following embodiments can exist independently or in combination with each other. For the same or similar content, such as the explanation of terms or nouns, and the explanation of steps, etc., different embodiments can refer to each other and will not be repeated.

[0085] FIG2 is a schematic diagram of a cell reselection method provided in an embodiment of the present application. As shown in FIG2 , the cell reselection method includes:

[0086] S201. An access network device sends first information to a terminal device. The first information includes one or more reselection-related configurations.

[0087] In other words, the terminal device receives first information sent by the network device, where the first information includes one or more reselection-related configurations.

[0088] The first information can be applied to an IoT terminal device or a non-IoT terminal device. That is, the network device can send the first information to the IoT terminal device and the non-IoT terminal device respectively.

[0089] The network device can send the first information to the Internet of Things terminal device and the non-Internet of Things terminal device respectively through different system messages.

[0090] The first information applicable to the Internet of Things terminal and the first information applicable to the non-Internet of Things terminal may be the same or different.

[0091] Non-IoT terminal devices can also be called ordinary terminal devices. For example, non-IoT terminal devices can be NR terminal devices.

[0092] Each reselection-related configuration is applicable to different cells, that is, the first information includes reselection-related configurations of one or more cells.

[0093] In one possible implementation, each reselection-related configuration may include at least one of the following:

[0094] 1) First cell reselection judgment time.

[0095] The first cell reselection judgment time may be a cell reselection judgment time that can be directly used by the terminal device, or may be an initial cell reselection judgment time of the terminal device.

[0096] Existing common terminal devices are applicable to Treselection=INTEGER(0..7) seconds. In the embodiment of the present application, the rounding range of the cell reselection judgment time of the common terminal device can be extended to 14 seconds; the unit of the rounding range of the cell reselection judgment time of the common terminal device can also be extended to minutes or hours to reduce reselection. It is also possible to reconfigure a set of cell reselection judgment time for the common terminal device in the embodiment of the present application. For example, it can be Treselection NTN =INTEGER(0..14) seconds, or Treselection NTN =INTEGER(0..7) minutes, or Treselection NTN =INTEGER(0..7) hours, which can not only reduce reselection but also reduce the impact on ordinary terminals in the ground network.

[0097] Existing IoT terminal devices are applicable to Treselection=INTEGER(0..21) seconds. In the embodiment of the present application, the value range of the cell reselection judgment time of the IoT terminal device can be extended to 40 seconds; the unit of the rounding range of the cell reselection judgment time of the IoT terminal device can also be extended to minutes or hours to reduce reselection. It is also possible to reconfigure a set of cell reselection judgment time for the IoT terminal device in the embodiment of the present application. For example, it can be Treselection NTN =INTEGER(0..40) seconds, or Treselection NTN =INTEGER(0..21) minutes, which not only reduces reselection but also minimizes the impact on IoT terminals in the ground network.

[0098] 2) First time offset value.

[0099] The first time offset value may refer to an offset value between the cell reselection judgment time applicable to the terminal device and the initial cell reselection judgment time of the terminal device.

[0100] The cell reselection judgment time applicable to the terminal device may be the sum of the initial cell reselection judgment time of the terminal device and the first time offset value, or may be the product of the initial cell reselection judgment time of the terminal device and the first time offset value.

[0101] The first time offset value may also refer to the offset value between the cell judgment and reselection time applicable to the terminal device (i.e., the cell judgment and reselection time applicable to the terminal device in the non-terrestrial network) and the cell reselection judgment time applicable to the terminal device in the terrestrial network.

[0102] The cell reselection judgment time applicable to the terminal device can be the sum of the cell reselection judgment time applicable to the terminal device in the ground network and the first time offset value, or it can be the product of the cell reselection judgment time applicable to the terminal device in the ground network and the first time offset value.

[0103] 3) First cell reselection hysteresis parameter.

[0104] The first cell reselection hysteresis parameter may be a cell reselection hysteresis parameter that can be directly used by the terminal device, or may be an initial cell reselection hysteresis parameter of the terminal device.

[0105] 4) First hysteresis parameter offset value.

[0106] The first hysteresis parameter offset value may refer to an offset value between a cell reselection hysteresis parameter applicable to the terminal device and an initial cell reselection hysteresis parameter of the terminal device.

[0107] The cell reselection hysteresis parameter applicable to the terminal device may be the sum of the initial cell reselection hysteresis parameter of the terminal device and the first hysteresis parameter offset value, or may be the product of the initial cell reselection hysteresis parameter of the terminal device and the first hysteresis parameter offset value.

[0108] The first hysteresis parameter offset value may also refer to an offset value between a cell reselection hysteresis parameter applicable to the terminal device (i.e., a cell reselection hysteresis parameter applicable to the terminal device in a non-terrestrial network) and a cell reselection hysteresis parameter applicable to the terminal device in a terrestrial network.

[0109] The cell reselection hysteresis parameter applicable to the terminal device can be the sum of the cell reselection hysteresis parameter applicable to the terminal device in the terrestrial network and the first hysteresis parameter bias value, or it can be the product of the cell reselection hysteresis parameter applicable to the terminal device in the terrestrial network and the first hysteresis parameter bias value.

[0110] 5) First cell quality offset value.

[0111] The first cell quality bias value may be a cell quality bias value that can be directly used by the terminal device, or may be an initial cell quality bias value of the terminal device.

[0112] 6) First quality parameter offset value.

[0113] The first quality parameter offset value may refer to an offset value between a cell quality offset value applicable to the terminal device and an initial cell quality offset value of the terminal device.

[0114] The cell quality offset value applicable to the terminal device may be the sum of the initial cell quality offset value of the terminal device and the first quality parameter offset value, or may be the product of the initial cell quality offset value of the terminal device and the first quality parameter offset value.

[0115] The first quality parameter offset value may also refer to an offset value between a cell quality offset value applicable to the terminal device (ie, a cell quality offset value applicable to the terminal device in a non-terrestrial network) and a cell quality offset value applicable to the terminal device in a terrestrial network.

[0116] The cell quality bias value used by the terminal device may be the sum of the cell quality bias value applicable to the terminal device in the terrestrial network and the first quality parameter bias value, or may be the product of the cell quality bias value applicable to the terminal device in the terrestrial network and the first quality parameter bias value.

[0117] Exemplarily, each reselection-related configuration may include any one of the following: first cell reselection judgment time; first time offset value; first cell reselection hysteresis parameter; first hysteresis parameter offset value; first cell quality offset value; first quality parameter offset value; first cell reselection judgment time and first time offset value; first cell reselection hysteresis parameter and first hysteresis parameter offset value; first cell quality offset value and first quality parameter offset value; first cell reselection judgment time and first cell reselection hysteresis parameter; first cell reselection judgment time and first cell quality offset value; first cell reselection hysteresis parameter and first cell quality offset value; first cell reselection judgment time, first cell reselection hysteresis parameter and first cell quality offset value; first time offset value and first hysteresis parameter Bias value; first time offset value and first quality parameter offset value; first hysteresis parameter offset value and first quality parameter offset value; first time offset value, first hysteresis parameter offset value and first quality parameter offset value; first cell reselection judgment time and first time offset value and first cell reselection hysteresis parameter and first hysteresis parameter offset value; first cell reselection judgment time and first time offset value and first cell quality offset value and first quality parameter offset value; first cell reselection hysteresis parameter and first hysteresis parameter offset value and first cell quality offset value and first quality parameter offset value; first cell reselection judgment time and first time offset value, first cell reselection hysteresis parameter and first hysteresis parameter offset value and first cell quality offset value and first quality parameter offset value.

[0118] In a possible implementation, each reselection-related configuration may include multiple pieces of reselection parameter information, and the parameters in each piece of reselection parameter information may be applicable at different speeds.

[0119] The multiple reselection parameter information may be presented in the form of a list or in the form of a set. The embodiment of the present application does not limit the presentation form of the multiple reselection parameter information.

[0120] In a possible implementation, each reselection parameter information may include at least one of the following:

[0121] 1) Second cell reselection judgment time.

[0122] The second cell reselection judgment time may refer to a cell reselection judgment time that can be directly used when the terminal device is in a certain motion state; or it may be an initial cell reselection judgment time when the terminal device is in a certain motion state.

[0123] 2) Second time offset value.

[0124] The second time offset value may refer to an offset value between a cell reselection judgment time applicable to a terminal device in a certain motion state and an initial cell reselection judgment time of the terminal device in the motion state.

[0125] The cell reselection judgment time applicable to the terminal device in a certain motion state can be the sum of the initial cell reselection judgment time of the terminal device in the motion state and the second time offset value, or it can be the product of the initial cell reselection judgment time of the terminal device in the motion state and the second time offset value.

[0126] The second time offset value may also refer to the offset value between the cell reselection judgment time applicable to the terminal device in a certain motion state (i.e., the cell reselection judgment time applicable to the terminal device in a non-terrestrial network and in this motion state) relative to the cell reselection judgment time applicable to the terminal device in a terrestrial network and in this motion state.

[0127] The cell reselection judgment time applicable to the terminal device in a certain motion state can be the sum of the cell reselection judgment time applicable in the ground network and in the motion state and the second time offset value, or it can be the product of the cell reselection judgment time applicable in the ground network and in the motion state and the second time offset value.

[0128] 3) Second cell reselection hysteresis parameter.

[0129] The second cell reselection hysteresis parameter may be a cell reselection hysteresis parameter that can be directly used when the terminal device is in a certain motion state; or it may be an initial cell reselection hysteresis parameter of the terminal device in a certain motion state.

[0130] 4) Second hysteresis parameter offset value.

[0131] The second hysteresis parameter offset value may refer to an offset value between a cell reselection hysteresis parameter applicable to the terminal device in a certain motion state and an initial cell reselection hysteresis parameter of the terminal device in the motion state.

[0132] The cell reselection hysteresis parameter applicable to the terminal device in a certain motion state can be the sum of the initial cell reselection hysteresis parameter of the terminal device in the motion state and the second hysteresis parameter bias value, or it can be the product of the initial cell reselection hysteresis parameter of the terminal device in the motion state and the second hysteresis parameter bias value.

[0133] The second hysteresis parameter offset value may also refer to the offset value between the cell reselection hysteresis parameter applicable to the terminal device in a certain motion state (i.e., the cell reselection hysteresis parameter applicable to the terminal device in a non-terrestrial network) and the cell reselection hysteresis parameter applicable to the terminal device in the terrestrial network and in the motion state.

[0134] The cell reselection hysteresis parameter applicable to the terminal device in a certain motion state can be the sum of the cell reselection hysteresis parameter applicable to the terminal device in the ground network and in the motion state and the second hysteresis parameter bias value, or it can be the product of the cell reselection hysteresis parameter applicable to the terminal device in the ground network and in the motion state and the second hysteresis parameter bias value.

[0135] 5) Second cell quality offset value.

[0136] The second cell quality offset value may be a cell quality offset value that can be directly used when the terminal device is in a certain motion state; or it may be an initial cell quality offset value when the terminal device is in a certain motion state.

[0137] 6) Second quality parameter offset value.

[0138] The second quality parameter offset value refers to an offset value between a cell quality offset value applicable to a terminal device in a certain motion state and a second cell quality offset value of the terminal device in the motion state.

[0139] The cell quality bias value applicable to the terminal device in a certain motion state can be the sum of the initial cell quality bias value of the terminal device in the motion state and the second quality parameter bias value, or it can be the product of the initial cell quality bias value of the terminal device in the motion state and the second quality parameter bias value.

[0140] The second quality parameter bias value refers to the offset value between the cell quality bias value applicable to the terminal device in a certain motion state (that is, the cell quality bias value applicable to the terminal device in a non-terrestrial network and in this motion state) and the cell quality bias value applicable to the terminal device in a non-terrestrial network and in this motion state.

[0141] The cell quality bias value applicable to the terminal device in a certain motion state can be the sum of the cell quality bias value applicable to the terminal device in a non-terrestrial network and in the motion state and the second quality parameter bias value, or it can be the product of the cell quality bias value applicable to the terminal device in a non-terrestrial network and in the motion state and the second quality parameter bias value.

[0142] Exemplarily, each reselection parameter information may include any one of the following: second cell reselection judgment time; second time offset value; second cell reselection hysteresis parameter; second hysteresis parameter offset value; second cell quality offset value; second quality parameter offset value; second cell reselection judgment time and second time offset value; second cell reselection hysteresis parameter and second hysteresis parameter offset value; second cell quality offset value and second quality parameter offset value; second cell reselection judgment time and second cell reselection hysteresis parameter; second cell reselection judgment time and second cell quality offset value; second cell reselection hysteresis parameter and second cell quality offset value; second cell reselection judgment time, second cell reselection hysteresis parameter and second cell quality offset value; second time offset value and second hysteresis parameter Bias value; second time offset value and second quality parameter offset value; second hysteresis parameter offset value and second quality parameter offset value; second time offset value, second hysteresis parameter offset value and second quality parameter offset value; second cell reselection judgment time and second time offset value and second cell reselection hysteresis parameter and second hysteresis parameter offset value; second cell reselection judgment time and second time offset value and second cell quality offset value and second quality parameter offset value; second cell reselection hysteresis parameter and second hysteresis parameter offset value and second cell quality offset value and second quality parameter offset value; second cell reselection judgment time and second time offset value, second cell reselection hysteresis parameter and second hysteresis parameter offset value and second cell quality offset value and second quality parameter offset value.

[0143] The form of multiple reselection parameter information in the reselection related configuration may be as shown in Table 1, Table 2 or Table 3.

[0144] Table 1

[0145] In Table 1, each row may represent a reselection parameter information, and the speed range corresponding to the motion state in each row is different.

[0146] Table 2

[0147] In Table 2, each row may represent a reselection parameter information, and the speed range corresponding to the motion state in each row is different.

[0148] Table 3

[0149] In Table 3, each row may represent a reselection parameter information, and the speed range corresponding to the motion state in each row is different.

[0150] In a possible implementation, the first information may further include multiple ephemeris maps, where the multiple ephemeris maps include the ephemeris map of the serving cell and the ephemeris maps of neighboring cells.

[0151] That is, the first information may include the reselection-related configuration and ephemeris map of the serving cell, and the reselection-related configuration and ephemeris map of the neighboring cell.

[0152] Each ephemeris map may include at least one of the following: the position of the access network device, the speed of the access network device, or the orbit of the access network device.

[0153] In a possible implementation, the first information may further include multiple speed thresholds, each speed threshold corresponding to a different speed state.

[0154] That is, the first information may include the reselection-related configuration of the serving cell (including multiple reselection parameter information), the ephemeris map and multiple speed thresholds, and may also include the reselection-related configuration of the neighboring cell (including multiple reselection parameter information), the ephemeris map and multiple speed thresholds.

[0155] In one possible implementation, the first information may also include a first duration and / or a second duration, where the first duration is the duration during which the cell selection criteria are not measured when the terminal device is not resident in the cell, and the second duration is the duration during which the cell reselection criteria are not measured when the terminal device is resident in the cell.

[0156] S202. The terminal device reselects a cell according to the first information.

[0157] The terminal device can reselect a cell in the following ways:

[0158] 1) The first information includes the reselection-related configuration of the serving cell and the reselection-related configuration of the neighboring cell, and each reselection-related configuration includes the first cell reselection judgment time. If the terminal device exceeds the first cell reselection judgment time of the serving cell, the terminal device can reselect the cell according to the signal quality of each cell.

[0159] 2) The first information includes the reselection-related configuration of the serving cell and the reselection-related configuration of the neighboring cell, and each reselection-related configuration includes a first time offset value. The terminal device can determine the cell reselection judgment time applicable to each cell based on the first time offset value of each cell. If the terminal device exceeds the first cell reselection judgment time of the serving cell, the terminal device can perform cell reselection based on the signal quality of each cell.

[0160] 3) The first information includes the reselection-related configuration of the serving cell and the reselection-related configuration of the neighboring cell, and each reselection-related configuration includes the first cell reselection judgment time and the first time offset value. The terminal device can determine the cell reselection judgment time applicable to each cell based on the first cell reselection judgment time and the first time offset value of each cell. If the terminal device exceeds the cell reselection judgment time applicable to the serving cell, the terminal device can perform cell reselection based on the signal quality of each cell.

[0161] 4) The first information includes the reselection-related configuration of the serving cell and the reselection-related configuration of the neighboring cell, and each reselection-related configuration includes the first cell reselection hysteresis parameter and the first cell quality offset value. The terminal device can determine the signal quality level of each cell according to the following formula: R s =Q meas,s +Q hyst -Qoffset temp R n =Q meas,n -Qoffset-Qoffset temp

[0162] Among them, R s Q is the signal quality level of the serving cell; meas,s The signal quality of the serving cell measured by the terminal device; Q hyst Qoffset is the first cell reselection hysteresis parameter of the serving cell; temp It is an additional offset value applied to a cell during cell selection or reselection, specifically a temporary application when T300 continuously times out in a cell; R n Q is the signal quality level of the neighboring area; meas,n It is the signal quality of the neighboring cell measured by the terminal device; Qoffset is the first cell quality offset value of the neighboring cell.

[0163] The signal quality level of each cell is sorted. If the signal quality level of the serving cell is the highest, the terminal device does not reselect the cell and remains in the serving cell. If the signal quality level of the neighboring cell is the highest, the terminal device can reselect to the neighboring cell.

[0164] 5) The first information includes the reselection-related configuration of the serving cell and the reselection-related configuration of the neighboring cell, and each reselection-related configuration includes a first hysteresis parameter bias value and a first quality parameter bias value. The terminal device can determine the cell reselection hysteresis parameter of the terminal device in the cell according to the first hysteresis parameter bias value of each cell, and determine the cell quality bias value of the terminal device in the cell according to the first quality parameter bias value of each cell; then determine the signal quality level of each cell according to the cell reselection hysteresis parameter and the cell quality bias value. The method for determining the signal quality level can be referred to method 4), which will not be repeated here; sort the signal quality level of each cell. If the signal quality level of the serving cell is the largest, the terminal device does not reselect the cell and still resides in the serving cell. If the signal quality level of the neighboring cell is the largest, the terminal device can reselect to the neighboring cell.

[0165] 6) The first information includes the reselection-related configuration of the serving cell and the reselection-related configuration of the neighboring cell, and each reselection-related configuration includes the first cell reselection hysteresis parameter and the first hysteresis parameter bias value as well as the first cell quality bias value and the first quality parameter bias value. The terminal device can determine the cell reselection hysteresis parameter applicable to the terminal device in the cell according to the first cell reselection hysteresis parameter and the first hysteresis parameter bias value of each cell, and determine the cell quality bias value applicable to the terminal device in the cell according to the first cell quality bias value and the first quality parameter bias value of each cell; then determine the signal quality level of each cell according to the cell reselection hysteresis parameter and the cell quality bias value applicable to the terminal device in each cell. The method for determining the signal quality level can be referred to method 4), which will not be repeated here; sort the signal quality level of each cell. If the signal quality level of the serving cell is the largest, the terminal device does not reselect the cell and still resides in the serving cell. If the signal quality level of the neighboring cell is the largest, the terminal device can reselect to the neighboring cell.

[0166] 7) The first information includes the reselection-related configuration of the serving cell and the reselection-related configuration of the neighboring cell, and each reselection-related configuration includes the first cell reselection judgment time, the first cell reselection hysteresis parameter and the first hysteresis parameter bias value. If the terminal device exceeds the first cell reselection judgment time of the serving cell, the terminal device can determine the signal quality level of each cell based on the first cell reselection hysteresis parameter and the first cell quality bias value of the terminal device in each cell. The method for determining the signal quality level can refer to method 4), which will not be repeated here; the signal quality level of each cell is sorted. If the signal quality level of the serving cell is the largest, the terminal device does not reselect the cell and still resides in the serving cell. If the signal quality level of the neighboring cell is the largest, the terminal device can reselect to the neighboring cell.

[0167] 8) The first information includes the reselection-related configuration of the serving cell and the reselection-related configuration of the neighboring cell, and each reselection-related configuration includes a first time offset value, a first hysteresis parameter offset value and a first quality parameter offset value; then the terminal device can determine the cell reselection judgment time applicable to each cell based on the first time offset value of each cell; determine the cell reselection hysteresis parameter of the terminal device in the cell based on the first hysteresis parameter offset value of each cell; determine the cell quality offset value of the terminal device in the cell based on the first quality parameter offset value of each cell; and then determine the signal quality level of each cell based on the cell reselection hysteresis parameter and the cell quality offset value. The method for determining the signal quality level can be referred to method 4), which will not be repeated here; if the terminal device exceeds the cell reselection judgment time of the serving cell, the terminal device can reselect the cell based on the signal quality level of each cell. If the signal quality level of the serving cell is the largest, the terminal device does not reselect the cell and still resides in the serving cell. If the signal quality level of the neighboring cell is the largest, the terminal device can reselect to the neighboring cell.

[0168] 9) The first information includes the reselection-related configuration of the serving cell and the reselection-related configuration of the neighboring cell, and each reselection-related configuration includes the first cell reselection judgment time, the first cell reselection hysteresis parameter, the first hysteresis parameter bias value, the first time bias value, the first hysteresis parameter bias value and the first quality parameter bias value; the terminal device can determine the cell reselection judgment time applicable to each cell according to the first cell reselection judgment time and the first time bias value of each cell; determine the cell reselection hysteresis parameter applicable to the terminal device in the cell according to the first cell reselection hysteresis parameter and the first hysteresis parameter bias value of each cell; determine the cell reselection hysteresis parameter applicable to the terminal device in the cell according to the first cell quality bias value of each cell And the first quality parameter bias value is used to determine the cell quality bias value applicable to the terminal device in the cell; then the signal quality level of each cell is determined according to the cell reselection hysteresis parameter and the cell quality bias value applicable to the terminal device in each cell. The method for determining the signal quality level can refer to method 4), which will not be repeated here; if the terminal device exceeds the cell reselection judgment time applicable to the serving cell, the terminal device can reselect the cell according to the signal quality level of each cell. If the signal quality level of the serving cell is the largest, the terminal device does not reselect the cell and still resides in the serving cell. If the signal quality level of the neighboring cell is the largest, the terminal device can reselect to the neighboring cell.

[0169] 10) If the first information includes the reselection-related configuration (including multiple reselection parameter information), ephemeris map and multiple speed thresholds of the serving cell, and may also include the reselection-related configuration (including multiple reselection parameter information), ephemeris map and multiple speed thresholds of the neighboring cell, then for any cell, the terminal device determines the motion state of the terminal device based on the ephemeris map associated with the cell, the speed of the terminal device and multiple speed thresholds; determines the reselection parameter information based on the motion state of the terminal device; and performs cell reselection based on the reselection parameter information corresponding to the terminal device in each cell.

[0170] In one possible implementation, the motion state of the terminal device may be determined by: determining the relative speed between the terminal device and the access network device based on the ephemeris diagram associated with the cell and the speed of the terminal device; and determining the motion state of the terminal device based on the relationship between the relative speed and multiple speed thresholds.

[0171] For example, if there are 6 speed thresholds, if the relative speed between the terminal device and the satellite is less than or equal to speed threshold 1, the terminal device is in motion state 1; if the relative speed between the terminal device and the satellite is greater than speed threshold 1 and less than or equal to speed threshold 2, the terminal device is in motion state 2; if the relative speed between the terminal device and the satellite is greater than speed threshold 2 and less than or equal to speed threshold 3, the terminal device is in motion state 3; if the relative speed between the terminal device and the satellite is greater than speed threshold 3 and less than or equal to speed threshold 4, the terminal device is in motion state 4; if the relative speed between the terminal device and the satellite is greater than speed threshold 4 and less than or equal to speed threshold 5, the terminal device is in motion state 5; if the relative speed between the terminal device and the satellite is greater than speed threshold 5 and less than or equal to speed threshold 6, the terminal device is in motion state 6.

[0172] After determining the reselection parameter information of each cell, the terminal device can refer to the above-mentioned methods 1) to 9) to perform cell reselection, which will not be repeated here.

[0173] 11) If the first information includes a first duration, the terminal device starts timing when leaving the current serving cell, does not measure the cell selection rule within the first duration, that is, does not perform cell selection, and measures the cell selection rule to perform cell selection after the first duration.

[0174] 12) If the first information includes a second duration, the terminal device starts timing when entering the current serving cell, does not measure the cell reselection rules within the second duration, that is, does not perform cell reselection, and measures the cell reselection rules after the second duration to perform cell selection.

[0175] In the embodiment shown in FIG2 , the network device sends first information to the terminal device. The first information includes one or more reselection-related configurations. The terminal device can accurately reselect a cell based on the reselection-related configurations, thereby reducing the frequency of cell reselection.

[0176] Figure 3 is a schematic diagram of the structure of a cell reselection device provided in an embodiment of the present application. As shown in Figure 3, the cell reselection device 300 includes: a communication module 301 for receiving first information, the first information including one or more reselection-related configurations, and the first information is applied to an IoT terminal device or a non-IoT terminal device; and a processing module 302 for performing cell reselection based on the first information.

[0177] In one possible implementation, each reselection-related configuration includes at least one of the following: a first cell reselection judgment time; a first time offset value; a first cell reselection hysteresis parameter; a first hysteresis parameter offset value; a first cell quality offset value; and a first quality parameter offset value.

[0178] In a possible implementation, each reselection-related configuration includes a plurality of reselection parameter information, and the parameters in each reselection parameter information are applicable to different speeds.

[0179] In one possible implementation, each reselection parameter information includes at least one of the following: second cell reselection judgment time; second time offset value; second cell reselection hysteresis parameter; second hysteresis parameter offset value; second cell quality offset; second quality parameter offset value.

[0180] In one possible implementation, the first information also includes multiple ephemeris maps, including an ephemeris map of a serving cell and an ephemeris map of a neighboring cell, wherein each ephemeris map includes at least one of the following: the position of the access network device, the speed of the access network device, or the orbit of the access network device.

[0181] In a possible implementation, the first information further includes multiple speed thresholds, and each speed threshold corresponds to a different motion state.

[0182] In one possible implementation, the processing module 302 is specifically used to: for any cell, determine the motion state of the terminal device based on the ephemeris map associated with the cell, the speed of the terminal device and multiple speed thresholds; determine reselection parameter information based on the motion state of the terminal device; and perform cell reselection based on the reselection parameter information corresponding to each cell of the terminal device.

[0183] In one possible implementation, the processing module 302 is specifically configured to: determine the relative speed between the terminal device and the access network device based on the cell-associated ephemeris diagram and the speed of the terminal device; and determine the motion state of the terminal device based on the relationship between the relative speed and multiple speed thresholds.

[0184] In one possible implementation, the first information also includes a first duration and / or a second duration, the first duration being the duration during which the cell selection criteria are not measured when the terminal device is not resident in the cell, and the second duration being the duration during which the cell reselection criteria are not measured when the terminal device is resident in the cell.

[0185] The cell reselection device 300 provided in this embodiment is used to implement the technical solution of the terminal device in the aforementioned method embodiment. Its implementation principle and technical effects are similar and will not be described in detail here.

[0186] Figure 4 is a schematic diagram of the structure of another cell reselection device according to an embodiment of the present application. As shown in Figure 4, the cell reselection device 400 includes: a determination module 401 for determining first information, the first information including one or more reselection-related configurations, and the first information being applied to an IoT terminal device or a non-IoT terminal device; and a communication module 402 for transmitting the first information.

[0187] In one possible implementation, each reselection-related configuration includes at least one of the following: a first cell reselection judgment time; a first time offset value; a first cell reselection hysteresis parameter; a first hysteresis parameter offset value; a first cell quality offset value; and a first quality parameter offset value.

[0188] In a possible implementation, each reselection-related configuration includes a plurality of reselection parameter information, and the parameters in each reselection parameter information are applicable to different speeds.

[0189] In one possible implementation, each reselection parameter information includes at least one of the following: second cell reselection judgment time; second time offset value; second cell reselection hysteresis parameter; second hysteresis parameter offset value; second cell quality offset; second quality parameter offset value.

[0190] In one possible implementation, the first information also includes multiple ephemeris maps, including an ephemeris map of a serving cell and an ephemeris map of a neighboring cell, wherein each ephemeris map includes at least one of the following: the position of the access network device, the speed of the access network device, or the orbit of the access network device.

[0191] In a possible implementation, the first information further includes multiple speed thresholds, and each speed threshold corresponds to a different motion state.

[0192] In one possible implementation, the first information also includes a first duration and / or a second duration, the first duration being the duration during which the cell selection criteria are not measured when the terminal device is not resident in the cell, and the second duration being the duration during which the cell reselection criteria are not measured when the terminal device is resident in the cell.

[0193] The cell reselection device 400 provided in this embodiment is used to implement the technical solution of the access network device in the aforementioned method embodiment. Its implementation principle and technical effects are similar and will not be described in detail here.

[0194] Figure 5 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application. As shown in Figure 5, terminal device 500 includes: a processor 501 and a memory 902; the memory 502 stores computer-executable instructions; the processor 501 executes the computer-executable instructions stored in the memory 502, causing the terminal device to perform the corresponding technical solutions of the terminal device in the aforementioned method embodiment. The implementation principles and technical effects are similar and will not be repeated here.

[0195] Figure 6 is a schematic diagram of the structure of a network device provided in an embodiment of the present application. As shown in Figure 6, network device 600 includes: a processor 601 and a memory 602; the memory 602 stores computer-executable instructions; the processor 601 executes the computer-executable instructions stored in the memory 602, causing the network device to implement the corresponding technical solution of the access network device in the aforementioned method embodiment. The implementation principles and technical effects are similar and will not be repeated here.

[0196] The present embodiment provides a chip. The chip includes a processor configured to invoke a computer program stored in a memory to execute the technical solution of the above embodiment. The implementation principles and technical effects are similar to those of the above-mentioned related embodiments and will not be further described here.

[0197] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the method steps performed by the access network device in the aforementioned method embodiment are implemented.

[0198] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the method steps performed by the terminal device in the aforementioned method embodiment are implemented.

[0199] An embodiment of the present application provides a computer program product, including a computer program. When the computer program is executed, the computer executes the method steps executed by the access network device in the aforementioned method embodiment.

[0200] An embodiment of the present application provides a computer program product, including a computer program. When the computer program is executed, the computer executes the method steps executed by the terminal device in the aforementioned method embodiment.

[0201] The methods described in the above embodiments can be implemented in whole or in part through software, hardware, firmware, or any combination thereof. If implemented in software, the functions can be stored as one or more instructions or codes on a computer-readable medium or transmitted on a computer-readable medium. Computer-readable media can include computer storage media and communication media, and can also include any medium that can transfer a computer program from one place to another. The storage medium can be any target medium that can be accessed by a computer.

[0202] In one possible implementation, computer-readable media may include RAM, ROM, compact disc read-only memory (CD-ROM) or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium designed to carry or store the desired program code in the form of instructions or data structures and accessible by a computer. Furthermore, any connection is appropriately referred to as a computer-readable medium. For example, if software is transmitted from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwave are included in the definition of medium. Disk and disc as used herein include optical disc, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks typically reproduce data magnetically, while optical discs reproduce data optically using lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0203] The present application embodiment is described with reference to the flowchart and / or block diagram of the method, device (system) of the present application embodiment. It should be understood that each process and / or box in the flowchart and / or block diagram, and the combination of the process and / or box in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processing unit of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable device to produce a machine, so that the instructions executed by the processing unit of the computer or other programmable data processing device produce a device for implementing the function specified in one process or multiple processes in the flowchart and / or one box or multiple boxes in the block diagram.

[0204] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of this application in detail. It should be understood that the above are only specific implementation methods of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of this application should be included in the scope of protection of this application.

Claims

1. A cell reselection method, characterized in that: include: receiving first information, where the first information includes one or more reselection-related configurations, and the first information is applied to an Internet of Things terminal device or a non-Internet of Things terminal device; Perform cell reselection according to the first information.

2. The method according to claim 1, characterized in that Each reselection-related configuration includes at least one of the following: First cell reselection judgment time; First time offset value; First cell reselection hysteresis parameter; First hysteresis parameter bias value; a first cell quality offset value; First quality parameter offset value.

3. The method according to claim 1, characterized in that Each reselection-related configuration includes a plurality of reselection parameter information, and the parameters in each reselection parameter information are applicable to different speeds.

4. The method according to claim 3, characterized in that Each reselection parameter information includes at least one of the following: Second cell reselection judgment time; Second time offset value; Second cell reselection hysteresis parameter; Second hysteresis parameter bias value; Second cell quality bias; The second quality parameter offset value.

5. The method according to any one of claims 1 to 4, characterized in that The first information further includes a plurality of ephemeris maps, the plurality of ephemeris maps including the ephemeris map of the serving cell and the ephemeris map of the neighboring cell, wherein: Each ephemeris diagram includes at least one of the following: a position of the access network device, a speed of the access network device, or an orbit of the access network device.

6. The method according to any one of claims 1 to 5, characterized in that The first information further includes multiple speed thresholds, each speed threshold corresponding to a different motion state.

7. The method according to claim 6, characterized in that Performing cell reselection according to the first information includes: For any cell, determine the motion state of the terminal device according to the ephemeris map associated with the cell, the speed of the terminal device and the multiple speed thresholds; determining reselection parameter information according to the motion state of the terminal device; Cell reselection is performed based on the reselection parameter information corresponding to each cell of the terminal device.

8. The method according to claim 7, characterized in that The determining the motion state of the terminal device according to the ephemeris diagram associated with the cell, the speed of the terminal, and the multiple speed thresholds includes: determining a relative speed between the terminal device and an access network device according to the ephemeris diagram associated with the cell and the speed of the terminal device; The motion state of the terminal device is determined according to the relationship between the relative speed and the multiple speed thresholds.

9. The method according to claim 1, characterized in that The first information also includes a first duration and / or a second duration. The first duration is the duration when the terminal device is not stationed in the cell and the cell selection criteria are not measured. The second duration is the duration when the terminal device is stationed in the cell and the cell reselection criteria are not measured.

10. A cell reselection method, characterized in that: include: Determining first information, where the first information includes one or more reselection-related configurations, and the first information is applied to an IoT terminal device or a non-IoT terminal device; The first information is sent.

11. The method according to claim 10, characterized in that Each reselection-related configuration includes at least one of the following: First cell reselection judgment time; First time offset value; First cell reselection hysteresis parameter; First hysteresis parameter bias value; a first cell quality offset value; First quality parameter offset value.

12. The method according to claim 10, characterized in that Each reselection-related configuration includes a plurality of reselection parameter information, and the parameters in each reselection parameter information are applicable to different speeds.

13. The method according to claim 12, characterized in that Each reselection parameter information includes at least one of the following: Second cell reselection judgment time; Second time offset value; Second cell reselection hysteresis parameter; Second hysteresis parameter bias value; Second cell quality bias; The second quality parameter offset value.

14. The method according to any one of claims 10 to 13, characterized in that: The first information further includes a plurality of ephemeris maps, the plurality of ephemeris maps including the ephemeris map of the serving cell and the ephemeris map of the neighboring cell, wherein: Each ephemeris diagram includes at least one of the following: a position of the access network device, a speed of the access network device, or an orbit of the access network device.

15. The method according to any one of claims 10 to 14, characterized in that: The first information further includes multiple speed thresholds, each speed threshold corresponding to a different motion state.

16. The method according to claim 10, characterized in that The first information also includes a first duration and / or a second duration. The first duration is the duration when the terminal device is not stationed in the cell and the cell selection criteria are not measured. The second duration is the duration when the terminal device is stationed in the cell and the cell reselection criteria are not measured.

17. A terminal device, characterized in that: include: processor and memory; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the terminal performs the method according to any one of claims 1 to 9.

18. A network device, characterized in that: include: processor and memory; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the network device performs the method according to any one of claims 10 to 16.

19. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 9 or the method according to any one of claims 10 to 16 is implemented.

20. A chip system, characterized in that: The method comprises at least one processor and a communication interface, wherein the communication interface and the at least one processor are interconnected via a line, and the at least one processor is used to run a computer program or instruction to execute the method according to any one of claims 1 to 9, or the method according to any one of claims 10 to 16.

21. A computer program product, characterized in that The method comprises a computer program, which, when being executed, causes a computer to execute the method according to any one of claims 1 to 9 or the method according to any one of claims 10 to 16.

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