Cell switching condition judgment method, device and equipment

Abstract

The invention provides a cell switching condition judgment method, device and equipment, and the method comprises the steps: determining the current moment of a terminal; obtaining first parameter information according to the current moment; determining whether the terminal satisfies a cell switching condition according to the first parameter information; wherein the serving cell and / or the alternative target cell of the terminal are / is EMC; the first parameter information comprises at least one of the following items: first position information which is reference point position information of a service cell; the first relative position information is obtained according to the first position information and second position information, and the second position information is position information of the terminal at the current moment; the second relative position information is obtained according to the third position information and the second position information; and third position information, wherein the third position information is reference point position information of the alternative target cell. According to the scheme, the problem that condition switching in an EMC scene cannot be accurately supported in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method, device and equipment for determining a cell switching condition. Background Art

[0002] In an Earth Moving Cell (EMC), since the coverage of the satellite changes as the satellite moves (the reference location of the cell changes accordingly), if the terminal performs conditional handover according to the prior art, the executed handover may be inaccurate, which in turn leads to inaccurate selection of the target cell, resulting in a high handover failure rate and even dropped calls. Therefore, it is no longer applicable to directly reuse the reference location defined by the Earth-fixed cell (EFC) to determine the distance between the terminal (User Equipment, UE) and the cell for handover.

[0003] As described above, the existing technology cannot support accurate implementation of conditional switching in EMC scenarios. Summary of the invention

[0004] The purpose of the present application is to provide a method, device and equipment for determining cell switching conditions, so as to solve the problem that the prior art cannot support accurate implementation of conditional switching in EMC scenarios.

[0005] In order to solve the above technical problems, an embodiment of the present application provides a method for determining a cell switching condition, which is applied to a terminal, including:

[0006] Determining a current time of the terminal;

[0007] According to the current moment, obtaining first parameter information;

[0008] Determining, according to the first parameter information, whether the terminal meets a cell switching condition;

[0009] Wherein, the serving cell and / or the candidate target cell of the terminal is a surface mobile cell EMC;

[0010] The first parameter information includes at least one of the following:

[0011] First location information, where the first location information is reference point location information of a serving cell;

[0012] first relative position information, where the first relative position information is obtained based on the first position information and the second position information, where the first position information is the reference point position information of the serving cell, and the second position information is the position information of the terminal at the current moment;

[0013] Second relative position information, where the second relative position information is obtained according to third position information and second position information, the third position information is reference point position information of a candidate target cell, and the second position information is position information of the terminal at the current moment;

[0014] Third position information, where the third position information is reference point position information of a candidate target cell.

[0015] Optionally, the handover condition includes at least one of the following:

[0016] Mt > Thresh1, and Ml2 + Hys1 < Thresh2; where Mt represents the current moment, Thresh1 represents a first configuration parameter value for indicating a first moment before the serving cell stops serving or for indicating a time when the serving cell intends to stop serving; Ml2 represents the distance corresponding to the second relative position information; Hys1 represents a first hysteresis value; Thresh2 represents a second configuration parameter value for indicating a threshold value of the relative distance between the second position information and the third position information;

[0017] Mt > Thresh3, and Ml2’ - Hys2 > Thresh4; where Mt represents the current moment, Thresh3 represents a third configuration parameter value for indicating a time when the candidate target cell can provide service; Ml2’ represents the distance corresponding to the first relative position information, Hys2 represents a second hysteresis value; Thresh4 represents a fourth configuration parameter value for indicating a threshold value of the relative distance between the second position information and the first position information.

[0018] Optionally, before obtaining the first parameter information according to the current moment, it further includes:

[0019] Receiving configuration information sent by a network device;

[0020] Where the configuration information includes at least one of the following:

[0021] First reference position information; the first reference position information is the actual geographical location of a first reference point and is an absolute geographical location; the first reference position information is associated with first ephemeris information, and the first reference point is a reference point of a serving cell or a candidate target cell; or, the first reference position information is used to indicate a serving cell reference position and / or a candidate target cell reference position; or, the first reference position information is position information of the terminal relative to the sub-satellite point of a satellite device to which the serving cell or a neighboring cell belongs;

[0022] Second ephemeris information associated with the first parameter information;

[0023] Valid time information corresponding to the first ephemeris information and / or the second ephemeris information;

[0024] initial reference point position information of the first reference point;

[0025] Reference point validity time information of the first reference point.

[0026] Optionally, the configuration information also includes at least one of the following:

[0027] First time information, used to indicate the valid time corresponding to the first reference position information;

[0028] first index information, used to indicate first ephemeris information corresponding to the first reference position information;

[0029] second time information, used to indicate a valid start time of the first reference position information;

[0030] The first duration information is used to indicate the valid duration of the first reference position information.

[0031] Optionally, obtaining the first parameter information according to the current moment includes:

[0032] First parameter information is obtained according to the current time and the configuration information.

[0033] Optionally, also include:

[0034] Receiving cell attribute indication information sent by a network device;

[0035] Sending capability information for EMC mobility to the network device according to the cell attribute indication information;

[0036] The cell attribute indication information is used to indicate whether the serving cell, neighboring cell and / or candidate target cell of the terminal is an EMC cell.

[0037] The embodiment of the present application also provides a method for determining a cell switching condition, which is applied to a network device, including:

[0038] Send configuration information to the terminal;

[0039] The configuration information includes at least one of the following:

[0040] First reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location; the first reference location information is associated with the first ephemeris information, and the first reference point is a reference point of a serving cell or an alternative target cell; or, the first reference location information is used to indicate a serving cell reference location and / or an alternative target cell reference location; or, the first reference location information is location information of a sub-satellite point of the terminal relative to a satellite device belonging to the serving cell or a neighboring cell;

[0041] Second ephemeris information associated with the first parameter information;

[0042] Valid time information corresponding to the first ephemeris information and / or the second ephemeris information;

[0043] initial reference point position information of the first reference point;

[0044] Reference point validity time information of the first reference point.

[0045] Optionally, the configuration information also includes at least one of the following:

[0046] First time information, used to indicate the valid time corresponding to the first reference position information;

[0047] first index information, used to indicate first ephemeris information corresponding to the first reference position information;

[0048] Second time information, used to indicate the effective start time of the first reference position information;

[0049] The first duration information is used to indicate the valid duration of the first reference position information.

[0050] Optionally, also include:

[0051] Sending cell attribute indication information to the terminal;

[0052] Receiving capability information for EMC mobility sent by the terminal;

[0053] The sending of configuration information to the terminal includes:

[0054] Sending configuration information to the terminal according to the capability information;

[0055] The cell attribute indication information is used to indicate whether the serving cell, neighboring cell and / or candidate target cell of the terminal is an EMC cell.

[0056] The embodiment of the present application further provides a cell switching condition determination device, wherein the cell switching condition determination device is a terminal, including a memory, a transceiver, and a processor:

[0057] A memory for storing computer programs; a transceiver for transmitting and receiving data under the control of the processor; a processor for reading the computer programs in the memory and performing the following operations:

[0058] Determine the current time of the terminal;

[0059] Obtain first parameter information according to the current time;

[0060] Determine whether the terminal meets the cell handover condition according to the first parameter information;

[0061] Wherein, the serving cell and / or the alternative target cell of the terminal is a surface mobile cell EMC;

[0062] The first parameter information includes at least one of the following:

[0063] First position information, where the first position information is the reference point position information of the serving cell;

[0064] First relative position information, where the first relative position information is obtained according to the first position information and the second position information, the first position information is the reference point position information of the serving cell, and the second position information is the position information of the terminal at the current time;

[0065] Second relative position information, where the second relative position information is obtained according to the third position information and the second position information, the third position information is the reference point position information of the alternative target cell, and the second position information is the position information of the terminal at the current time;

[0066] Third position information, where the third position information is the reference point position information of the alternative target cell.

[0067] Optionally, the handover condition includes at least one of the following:

[0068] Mt > Thresh1 and Ml2 + Hys1 < Thresh2; where, the Mt represents the current time, the Thresh1 represents the first configuration parameter value, which is used to indicate the first time before the serving cell stops serving or the time when the serving cell wants to stop serving; the Ml2 represents the distance corresponding to the second relative position information; the Hys1 represents the first hysteresis value; the Thresh2 represents the second configuration parameter value, which is used to indicate the threshold value of the relative distance between the second position information and the third position information;

[0069] Mt>Thresh3, and Ml2'-Hys2>Thresh4; wherein, the Mt represents the current moment, the Thresh3 represents the third configuration parameter value, used to indicate the time when the alternative target cell can provide service; the Ml2' represents the distance corresponding to the first relative position information, and the Hys2 represents the second hysteresis value; the Thresh4 represents the fourth configuration parameter value, used to indicate the threshold value of the relative distance between the second position information and the first position information.

[0070] Optionally, the operation further includes:

[0071] Before obtaining the first parameter information according to the current moment, receiving configuration information sent by a network device through the transceiver;

[0072] The configuration information includes at least one of the following:

[0073] First reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location; the first reference location information is associated with the first ephemeris information, and the first reference point is a reference point of a serving cell or an alternative target cell; or, the first reference location information is used to indicate a serving cell reference location and / or an alternative target cell reference location; or, the first reference location information is location information of a sub-satellite point of the terminal relative to a satellite device belonging to the serving cell or a neighboring cell;

[0074] Second ephemeris information associated with the first parameter information;

[0075] Valid time information corresponding to the first ephemeris information and / or the second ephemeris information;

[0076] initial reference point position information of the first reference point;

[0077] Reference point validity time information of the first reference point.

[0078] Optionally, the configuration information also includes at least one of the following:

[0079] First time information, used to indicate the valid time corresponding to the first reference position information;

[0080] first index information, used to indicate first ephemeris information corresponding to the first reference position information;

[0081] Second time information, used to indicate the effective start time of the first reference position information;

[0082] The first duration information is used to indicate the valid duration of the first reference position information.

[0083] Optionally, obtaining the first parameter information according to the current moment includes:

[0084] First parameter information is obtained according to the current time and the configuration information.

[0085] Optionally, the operation further includes:

[0086] Receiving cell attribute indication information sent by a network device through the transceiver;

[0087] According to the cell attribute indication information, sending capability information for EMC mobility to the network device through the transceiver;

[0088] The cell attribute indication information is used to indicate whether the serving cell, neighboring cell and / or candidate target cell of the terminal is an EMC cell.

[0089] The embodiment of the present application further provides a cell switching condition determination device, wherein the cell switching condition determination device is a network device, including a memory, a transceiver, and a processor:

[0090] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0091] Sending configuration information to the terminal via the transceiver;

[0092] The configuration information includes at least one of the following:

[0093] First reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location; the first reference location information is associated with the first ephemeris information, and the first reference point is a reference point of a serving cell or an alternative target cell; or, the first reference location information is used to indicate a serving cell reference location and / or an alternative target cell reference location; or, the first reference location information is location information of a sub-satellite point of the terminal relative to a satellite device belonging to the serving cell or a neighboring cell;

[0094] Second ephemeris information associated with the first parameter information;

[0095] Valid time information corresponding to the first ephemeris information and / or the second ephemeris information;

[0096] initial reference point position information of the first reference point;

[0097] Reference point validity time information of the first reference point.

[0098] Optionally, the configuration information also includes at least one of the following:

[0099] First time information, used to indicate the valid time corresponding to the first reference position information;

[0100] first index information, used to indicate first ephemeris information corresponding to the first reference position information;

[0101] second time information, used to indicate a valid start time of the first reference position information;

[0102] The first duration information is used to indicate the valid duration of the first reference position information.

[0103] Optionally, the operation further includes:

[0104] Sending cell attribute indication information to the terminal through the transceiver;

[0105] Receiving, by the transceiver, capability information for EMC mobility sent by the terminal;

[0106] The sending of configuration information to the terminal includes:

[0107] Sending configuration information to the terminal according to the capability information;

[0108] The cell attribute indication information is used to indicate whether the serving cell, neighboring cell and / or candidate target cell of the terminal is an EMC cell.

[0109] The embodiment of the present application further provides a cell switching condition determination device, which is applied to a terminal, and includes:

[0110] A first determining unit, configured to determine a current time of the terminal;

[0111] A first processing unit, configured to obtain first parameter information according to the current moment;

[0112] A second determining unit, configured to determine whether the terminal meets a cell switching condition according to the first parameter information;

[0113] Wherein, the serving cell and / or the candidate target cell of the terminal is a surface mobile cell EMC;

[0114] The first parameter information includes at least one of the following:

[0115] First location information, where the first location information is reference point location information of a serving cell;

[0116] The first relative position information, which is obtained based on the first position information and the second position information, where the first position information is the reference point position information of the serving cell, and the second position information is the position information of the terminal at the current moment;

[0117] The second relative position information, which is obtained based on the third position information and the second position information, where the third position information is the reference point position information of the candidate target cell, and the second position information is the position information of the terminal at the current moment;

[0118] The third position information, which is the reference point position information of the candidate target cell.

[0119] Optionally, the handover condition includes at least one of the following:

[0120] Mt > Thresh1, and Ml2 + Hys1 < Thresh2; where Mt represents the current moment, Thresh1 represents the value of the first configuration parameter, which is used to indicate the first moment before the serving cell stops serving or the time when the serving cell intends to stop serving; Ml2 represents the distance corresponding to the second relative position information; Hys1 represents the first hysteresis value; Thresh2 represents the value of the second configuration parameter, which is used to indicate the threshold of the relative distance between the second position information and the third position information;

[0121] Mt > Thresh3, and Ml2’ - Hys2 > Thresh4; where Mt represents the current moment, Thresh3 represents the value of the third configuration parameter, which is used to indicate the time when the candidate target cell can provide service; Ml2’ represents the distance corresponding to the first relative position information, Hys2 represents the second hysteresis value; Thresh4 represents the value of the fourth configuration parameter, which is used to indicate the threshold of the relative distance between the second position information and the first position information.

[0122] Optionally, it further includes:

[0123] The first receiving unit is configured to receive the configuration information sent by the network device before obtaining the first parameter information according to the current moment;

[0124] Wherein, the configuration information includes at least one of the following:

[0125] First reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location; the first reference location information is associated with the first ephemeris information, and the first reference point is a reference point of a serving cell or an alternative target cell; or, the first reference location information is used to indicate a serving cell reference location and / or an alternative target cell reference location; or, the first reference location information is location information of a sub-satellite point of the terminal relative to a satellite device belonging to the serving cell or a neighboring cell;

[0126] Second ephemeris information associated with the first parameter information;

[0127] Valid time information corresponding to the first ephemeris information and / or the second ephemeris information;

[0128] initial reference point position information of the first reference point;

[0129] Reference point validity time information of the first reference point.

[0130] Optionally, the configuration information also includes at least one of the following:

[0131] First time information, used to indicate the valid time corresponding to the first reference position information;

[0132] first index information, used to indicate first ephemeris information corresponding to the first reference position information;

[0133] Second time information, used to indicate the effective start time of the first reference position information;

[0134] The first duration information is used to indicate the valid duration of the first reference position information.

[0135] Optionally, obtaining the first parameter information according to the current moment includes:

[0136] First parameter information is obtained according to the current time and the configuration information.

[0137] Optionally, also include:

[0138] A second receiving unit, configured to receive cell attribute indication information sent by a network device;

[0139] A first sending unit, configured to send capability information for EMC mobility to the network device according to the cell attribute indication information;

[0140] The cell attribute indication information is used to indicate whether the serving cell, neighboring cell and / or candidate target cell of the terminal is an EMC cell.

[0141] The embodiment of the present application further provides a cell switching condition determination device, which is applied to a network device, including:

[0142] A second sending unit, used to send configuration information to the terminal;

[0143] The configuration information includes at least one of the following:

[0144] First reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location; the first reference location information is associated with the first ephemeris information, and the first reference point is a reference point of a serving cell or an alternative target cell; or, the first reference location information is used to indicate a serving cell reference location and / or an alternative target cell reference location; or, the first reference location information is location information of a sub-satellite point of the terminal relative to a satellite device belonging to the serving cell or a neighboring cell;

[0145] Second ephemeris information associated with the first parameter information;

[0146] Valid time information corresponding to the first ephemeris information and / or the second ephemeris information;

[0147] initial reference point position information of the first reference point;

[0148] Reference point validity time information of the first reference point.

[0149] Optionally, the configuration information also includes at least one of the following:

[0150] First time information, used to indicate the valid time corresponding to the first reference position information;

[0151] first index information, used to indicate first ephemeris information corresponding to the first reference position information;

[0152] second time information, used to indicate a valid start time of the first reference position information;

[0153] The first duration information is used to indicate the valid duration of the first reference position information.

[0154] Optionally, also include:

[0155] A third sending unit, configured to send cell attribute indication information to the terminal;

[0156] A third receiving unit, configured to receive capability information for EMC mobility sent by the terminal;

[0157] The sending of configuration information to the terminal includes:

[0158] Sending configuration information to the terminal according to the capability information;

[0159] The cell attribute indication information is used to indicate whether the serving cell, neighboring cell and / or candidate target cell of the terminal is an EMC cell.

[0160] An embodiment of the present application also provides a non-transitory readable storage medium, which stores a computer program, and the computer program is used to enable a processor to execute the above-mentioned method on the terminal side or the network device side.

[0161] The beneficial effects of the above technical solution of the present application are as follows:

[0162] In the above scheme, the cell switching condition judgment method determines the current time of the terminal; obtains the first parameter information according to the current time; determines whether the terminal meets the cell switching condition according to the first parameter information; wherein the service cell and / or the candidate target cell of the terminal is a surface mobile cell EMC; the first parameter information includes at least one of the following: first location information, the first location information is the reference point location information of the service cell; first relative location information, the first relative location information is obtained according to the first location information and the second location information, the first location information is the reference point location information of the service cell, and the second location information is the location information of the terminal at the current moment; second relative location information, the second relative location information is obtained according to the third location information and the second location information, the third location information is the reference point location information of the candidate target cell, and the second location information is the location information of the terminal at the current moment; third location information, the third location information is the reference point location information of the candidate target cell; it can support the terminal in the EMC scenario, even if the reference location changes, it can also accurately judge the switching condition, thereby ensuring the accuracy of the conditional switching, and well solves the problem that the prior art cannot support accurate implementation of the conditional switching in the EMC scenario. BRIEF DESCRIPTION OF THE DRAWINGS

[0163] Figure 1 A schematic diagram of the wireless communication system architecture of an embodiment of the present application;

[0164] Figure 2 A schematic diagram of an NTN network according to an embodiment of the present application;

[0165] Figure 3 A schematic diagram of the positional relationship between the sub-satellite point and the reference point in the EMC scenario of an embodiment of the present application;

[0166] Figure 4 The cell switching condition determination method of the embodiment of the present application is shown in the following figure. Figure 1 ;

[0167] Figure 5 The cell switching condition determination method of the embodiment of the present application is shown in the following figure. Figure 2 ;

[0168] Figure 6 The structure of the cell switching condition judgment device in the embodiment of the present application is shown as follows Figure 1 ;

[0169] Figure 7 The structure of the cell switching condition judgment device in the embodiment of the present application is shown as follows Figure 2 ;

[0170] Figure 8 The structure of the cell switching condition determination device according to the embodiment of the present application is shown as follows: Figure 1 ;

[0171] Fig. 9 The structure of the cell switching condition determination device according to the embodiment of the present application is shown as follows: Figure 2 . DETAILED DESCRIPTION

[0172] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0173] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0174] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0175] It is explained here that the technical solution provided in the embodiment of the present application can be applicable to a variety of systems, especially 5G systems. For example, the applicable system can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, a LTE frequency division duplex (FDD) system, a LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G new air interface (NR) system, etc. These various systems include terminal equipment and network equipment. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0176] Figure 1 A block diagram of a wireless communication system applicable to the embodiments of the present application is shown. The wireless communication system includes a terminal device (also referred to as a terminal) and a network device.

[0177] The terminal device involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). The wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it can be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDA) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0178] The network device involved in the embodiments of the present application may be a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary network device (evolutional Node B, eNB or e-NodeB) in the long-term evolution (long term evolution, LTE) system, a 5G base station (the next Generation Node B, gNB) in the 5G network architecture (next generation system), or a home evolved Node B (Home evolved Node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

[0179] Network devices and terminal devices can each use one or more antennas for multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.

[0180] The following first introduces the contents involved in the solution provided in the embodiment of the present application.

[0181] 1. Non-Terrestrial Network (NTN);

[0182] NTN network refers to the use of satellites as communication relays to connect terminals and base stations wirelessly. NTN network can improve network coverage and provide continuous coverage for terminals in scenes such as deserts and oceans.

[0183] Specific examples include Figure 2 The figure shows a typical NTN network, in which the service link is between the NTN satellite (including at least one NTN paybad (board)) and the terminal (User Equipment, UE), and the feeder link is between the NTN satellite and the NTN gateway (NTN Gateway). The 5G base station (the next Generation Node B, gNB) can communicate with the access and mobility management function (Access and Mobility Management Function, AMF) or the user plane function (User Plan Function, UPF) through the NG interface; the gNB can communicate with the UE through the NR Uu interface. Among them, the NG interface represents the interface between the base station and the AMF or UPF, and the NR Uu interface represents the interface between the base station and the UE. Based on Figure 2 In the network architecture shown, NTN satellite can transparently forward data from base stations to terminals. Similarly, terminal data can also be transparently forwarded to NTN gateways and base stations via NTN satellite.

[0184] Among them, the NTN network includes the following three service links:

[0185] (1) Earth-fixed cell (EFC): The cell covered by the NTN satellite remains unchanged, such as the cell projected on the ground by the geosynchronous orbit (GEO) satellite;

[0186] (2) Quasi-Earth-fixed cell (quasi-EFC): The satellite beam stably covers a fixed area on the surface for a period of time;

[0187] (3) Earth-moving cell (EMC): In this scenario, the satellite’s beam coverage slides on the surface of the Earth.

[0188] Specifically, in a quasi-earth fixed cell (quasi-EFC), the coverage of the satellite remains unchanged over a period of time. The concept of reference location is defined in EFC to assist the UE in determining the distance from the cell. A possible implementation method is that the reference location is the center of a circular cell. Since in EFC, the coverage of the satellite remains unchanged over a period of time, the reference location will not change during this service time. In conditional handover (CHO), the terminal determines whether it is far away from the service cell and / or whether it is close to an alternative target cell by comparing the distance with the reference location. If the conditions are met, the terminal switches to the alternative target cell (the alternative target cell is used as the target cell, and it can also be understood that the alternative target cell is used as the target cell to be accessed by the terminal, but it is not limited to this).

[0189] Among them, in EMC, the coverage of the satellite changes as the satellite moves.

[0190] In this application, sub-satellite point: can be considered as the projection of the satellite on the ground; Reference location: represents the projection of the center point of the cell served by the satellite on the ground, which has a relative position relationship with the sub-satellite point. Figure 3As shown in the figure: the cells in the satellite coverage area are changing, where the relative position between the Reference location of each cell and the sub-satellite point (sub-satellite point) remains unchanged, which can be represented by a:(Δx,Δy) in the figure. Then the terminal can calculate the reference point position of each cell based on the sub-satellite point and a. Where a is a direction vector, indicating the position offset between the cell reference point and the sub-satellite point, the Δx indicates the offset distance in the x direction (such as the east-west direction in geographic coordinates), and the Δy indicates the offset distance in the y direction (such as the north-south direction in geographic coordinates).

[0191] 2. EMC feeder switch (feeder switching) scenario;

[0192] This scenario means that due to satellite movement, the gNB connected to the satellite is updated, but the satellite does not change its service range at the moment of feeder link switching and still provides services to some terminals.

[0193] As mentioned above, in Earth Moving Cell (EMC), the ground covered by the satellite will change as the satellite moves. Therefore, the reference location of the cell in the EMC scenario changes over time. So how to use the reference location in conditional switching is a problem that needs to be solved. Specifically, how to configure the CHO execution conditions applicable to the EMC scenario needs to be solved.

[0194] Based on the above, the embodiments of the present application provide a method, device and equipment for determining cell switching conditions, which are used to solve the problem that the prior art cannot support accurate implementation of conditional switching in EMC scenarios. Among them, the method, device and equipment are based on the same application concept. Since the principles of solving the problems by the method, device and equipment are similar, the implementation of the method, device and equipment can refer to each other, and the repeated parts will not be repeated.

[0195] The cell switching condition determination method provided in the embodiment of the present application is applied to a terminal, such as Figure 4 As shown, including:

[0196] Step 41: Determine the current time of the terminal;

[0197] Step 42: Obtain first parameter information according to the current moment;

[0198] Step 43: Determine whether the terminal satisfies the cell switching condition based on the first parameter information; wherein, the service cell and / or the alternative target cell of the terminal is a surface mobile cell EMC; the first parameter information includes at least one of the following: first position information, the first position information is the reference point position information of the service cell; first relative position information, the first relative position information is obtained based on the first position information and the second position information, the first position information is the reference point position information of the service cell, and the second position information is the position information of the terminal at the current moment; second relative position information, the second relative position information is obtained based on the third position information and the second position information, the third position information is the reference point position information of the alternative target cell, and the second position information is the position information of the terminal at the current moment; third position information, the third position information is the reference point position information of the alternative target cell.

[0199] The cell switching condition judgment method provided in the embodiment of the present application determines the current time of the terminal; obtains the first parameter information according to the current time; determines whether the terminal meets the cell switching condition according to the first parameter information; wherein the service cell and / or the candidate target cell of the terminal is a surface mobile cell EMC; the first parameter information includes at least one of the following: first location information, the first location information is the reference point location information of the service cell; first relative location information, the first relative location information is obtained according to the first location information and the second location information, the first location information is the reference point location information of the service cell, and the second location information is the location information of the terminal at the current moment; second relative location information, the second relative location information is obtained according to the third location information and the second location information, the third location information is the reference point location information of the candidate target cell, and the second location information is the location information of the terminal at the current moment; third location information, the third location information is the reference point location information of the candidate target cell; it can support the terminal in the EMC scenario, even if the referencelocation changes, it can also accurately judge the switching condition, thereby ensuring the accuracy of the conditional switching, and well solves the problem that the prior art cannot support accurate implementation of the conditional switching in the EMC scenario.

[0200] Among them, the handover conditions include entry conditions and / or exit conditions; among them, the entry conditions include at least one of the following: (1) Mt > Thresh1, and Ml2 + Hys1 < Thresh2; where Mt represents the current moment, Thresh1 represents the first configuration parameter value, which is used to indicate the first moment before the serving cell stops serving or the time when the serving cell intends to stop serving; Ml2 represents the distance corresponding to the second relative position information; Hys1 represents the first hysteresis value; Thresh2 represents the second configuration parameter value, which is used to indicate the threshold value of the relative distance between the second position information and the third position information; (2) Mt > Thresh3, and Ml2' - Hys2 > Thresh4; where Mt represents the current moment, Thresh3 represents the third configuration parameter value, which is used to indicate the time when the alternative target cell can provide service; Ml2' represents the distance corresponding to the first relative position information, Hys2 represents the second hysteresis value; Thresh4 represents the fourth configuration parameter value, which is used to indicate the threshold value of the relative distance between the second position information and the first position information.

[0201] And / or, the exit conditions include at least one of the following: (1) Mt > Thresh5 + Duration, where Mt represents the current moment, Thresh5 represents the fifth configuration parameter value, which is used to indicate the second moment before the serving cell stops serving or the time when the serving cell intends to stop serving; Duration represents the first delay length; (2) Ml2 - Hys3 > Thresh6, where Ml2 represents the distance corresponding to the second relative position information, Hys3 represents the third hysteresis value, Thresh6 represents the sixth configuration parameter value, which is used to indicate the threshold value of the relative distance between the second position information and the third position information; (3) Mt > Thresh7 + Duration', where Mt represents the current moment, Thresh7 represents the seventh configuration parameter value, which is used to indicate the time when the alternative target cell can provide service; Duration' represents the second delay length.

[0202] This can clarify the specific handover conditions.

[0203] Furthermore, before obtaining the first parameter information according to the current moment, the method further includes: receiving configuration information sent by a network device; wherein the configuration information includes at least one of the following: (1) first reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location; the first reference location information is associated with first ephemeris information, and the first reference point is a reference point of a serving cell or an alternative target cell; or, the first reference location information is used to indicate a serving cell reference location and / or an alternative target cell reference location; or, the first reference location information is location information of the terminal relative to a sub-satellite point of a satellite device belonging to the serving cell or a neighboring cell; (2) second ephemeris information associated with the first parameter information; (3) valid time information corresponding to the first ephemeris information and / or the second ephemeris information; (4) initial reference point location information of the first reference point; (5) reference point valid time information of the first reference point.

[0204] This can support the terminal to accurately obtain the above configuration information so as to perform subsequent related operations.

[0205] Among them, the configuration information also includes at least one of the following: first time information, used to indicate the valid time corresponding to the first reference position information; first index information, used to indicate the first ephemeris information corresponding to the first reference position information; second time information, used to indicate the valid start time of the first reference position information; first duration information, used to indicate the valid duration of the first reference position information.

[0206] In this way, the configuration information can be further refined to clarify the association between the first reference location information and the first ephemeris information. The first time information can be the first epochTime (epoch time) information, which can be used to indicate that the first reference location information is the coordinates of the cell reference point at a certain time; the first index information can indicate the index relationship between the first reference location information and the first ephemeris information; the second time information, such as the epoch time of the ephemeris information, can be used as the starting effective time of the corresponding reference location in the first reference location information; but it is not limited to this.

[0207] In an embodiment of the present application, the second time information is ephemeris information; and / or the second time information is configured separately for each reference position corresponding to the first reference position information; and / or the first duration information is configured separately for each reference position corresponding to the first reference position information.

[0208] In this way, the association between the first reference position information and the first ephemeris information can be further clarified.

[0209] The obtaining of the first parameter information according to the current time includes: obtaining the first parameter information according to the current time and the configuration information.

[0210] In this way, the first parameter information can be accurately obtained. In this solution, the obtaining of the first parameter information according to the current moment may include: obtaining the first parameter information according to the current moment and the configuration information stored locally in the terminal. The specific content of the configuration information stored locally in the terminal can refer to the specific content of the configuration information sent by the network device, which will not be repeated here.

[0211] Furthermore, the cell switching condition determination method also includes: receiving cell attribute indication information sent by a network device; sending capability information for EMC mobility to the network device based on the cell attribute indication information; wherein the cell attribute indication information is used to indicate whether the service cell, neighboring cell and / or alternative target cell of the terminal is an EMC cell.

[0212] This makes it easier for network equipment to clearly identify the EMC cells supported by the terminal.

[0213] The present application also provides a method for determining a cell switching condition, which is applied to a network device, such as Figure 5 As shown, including:

[0214] Step 51: Send configuration information to the terminal; wherein the configuration information includes at least one of the following: (1) first reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location; the first reference location information is associated with first ephemeris information, and the first reference point is a reference point of a serving cell or an alternative target cell; or, the first reference location information is used to indicate a serving cell reference location and / or an alternative target cell reference location; or, the first reference location information is location information of the terminal relative to a sub-satellite point of a satellite device belonging to the serving cell or a neighboring cell; (2) second ephemeris information associated with the first parameter information; (3) valid time information corresponding to the first ephemeris information and / or the second ephemeris information; (4) initial reference point location information of the first reference point; (5) reference point valid time information of the first reference point.

[0215] Among them, the first parameter information is obtained by the terminal according to the current moment of the terminal; the first parameter information includes at least one of the following: first position information, the first position information is the reference point position information of the serving cell; first relative position information, the first relative position information is obtained according to the first position information and the second position information, the first position information is the reference point position information of the serving cell, and the second position information is the position information of the terminal at the current moment; second relative position information, the second relative position information is obtained according to the third position information and the second position information, the third position information is the reference point position information of the alternative target cell, and the second position information is the position information of the terminal at the current moment; third position information, the third position information is the reference point position information of the alternative target cell.

[0216] The cell switching condition determination method provided in the embodiment of the present application sends configuration information to the terminal; wherein the configuration information includes at least one of the following: (1) first reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location; the first reference location information is associated with the first ephemeris information, and the first reference point is the reference point of the serving cell or the candidate target cell; or, the first reference location information is used to indicate the serving cell reference location and / or the candidate target cell reference location; or, the first reference location information is the location information of the terminal relative to the sub-satellite point of the satellite device belonging to the serving cell or the neighboring cell; (2) second ephemeris information associated with the first parameter information; (3) valid time information corresponding to the first ephemeris information and / or the second ephemeris information; (4) initial reference point location information of the first reference point; (5) reference point valid time information of the first reference point; it can support the terminal to accurately obtain the first parameter information, and determine whether the terminal meets the cell switching condition according to the first parameter information; wherein the serving cell and / or the candidate target cell of the terminal is a surface mobile cell EMC; thereby supporting the terminal in the EMC scenario, even if the reference The location changes can also accurately determine the switching conditions, thereby ensuring the accuracy of conditional switching, which is a good solution to the problem that the existing technology cannot support accurate implementation of conditional switching in EMC scenarios.

[0217] Furthermore, the configuration information also includes at least one of the following: first time information, used to indicate the valid time corresponding to the first reference position information; first index information, used to indicate the first ephemeris information corresponding to the first reference position information; second time information, used to indicate the valid start time of the first reference position information; first duration information, used to indicate the valid duration of the first reference position information.

[0218] In this way, the configuration information can be further refined to clarify the association between the first reference location information and the first ephemeris information. The first time information can be the first epochTime (epoch time) information, which can be used to indicate that the first reference location information is the coordinates of the cell reference point at a certain time; the first index information can indicate the index relationship between the first reference location information and the first ephemeris information; the second time information, such as the epoch time of the ephemeris information, can be used as the starting effective time of the corresponding reference location in the first reference location information; but it is not limited to this.

[0219] Among them, the second time information is ephemeris information; and / or the second time information is configured respectively for each reference position corresponding to the first reference position information; and / or the first duration information is configured respectively for each reference position corresponding to the first reference position information.

[0220] In this way, the association between the first reference position information and the first ephemeris information can be further clarified.

[0221] Furthermore, the cell switching condition determination method also includes: sending cell attribute indication information to the terminal; receiving capability information for EMC mobility sent by the terminal; the sending of configuration information to the terminal includes: sending configuration information to the terminal according to the capability information; wherein the cell attribute indication information is used to indicate whether the serving cell, neighboring cell and / or alternative target cell of the terminal is an EMC cell.

[0222] This makes it easier for the network device to clearly identify the EMC cells supported by the terminal and accurately send relevant configuration information for the supported EMC cells.

[0223] It is explained here that in this solution, the candidate target cell that the terminal is ready to access (ie, the candidate target cell that meets the switching condition) is used as the target cell.

[0224] The following is an example of the cell switching condition determination method provided in the embodiment of the present application.

[0225] In response to the above technical problems, an embodiment of the present application provides a method for determining a cell switching condition, which can be specifically implemented as a method for solving the switching problem in an EMC scenario, mainly involving: determining whether the switching condition is met based on whether the terminal position (corresponding to the above second position information) is greater than a first threshold (corresponding to the above Thresh4+Hys2) from the first real-time reference position (corresponding to the above first position information), and / or whether the terminal position is less than a second threshold (corresponding to the above Thresh2-Hys1) from the second real-time reference position (corresponding to the above third position information), and / or whether the moment measured by the terminal (corresponding to the above current moment) is greater than a third threshold (corresponding to the above Thresh1 or Thresh3); corresponding to the above determination of the current moment of the terminal; according to the current moment, obtaining first parameter information; according to the first parameter information, determining whether the terminal meets the cell switching condition; but not limited to this.

[0226] The following is a specific example to illustrate this solution.

[0227] Embodiment 1: The terminal associates the reference location in the proprietary configuration information with the ephemeris information in the broadcast message (eg, System Information Block (SIB) 19);

[0228] Step 1: The network side indicates (to the terminal) the cell attributes of the serving cell, the neighboring cell or the candidate (target) cell, such as whether it belongs to an Earth moving cell or a quasi-Earth fixed cell; corresponding to the above-mentioned sending of cell attribute indication information to the terminal;

[0229] Optionally, the terminal reports the capability of supporting EMC mobility according to the network side type; corresponding to the above-mentioned sending capability information for EMC mobility to the network device according to the cell attribute indication information.

[0230] Optionally, the network side may notify the cell attributes of the serving cell or the neighboring cell or the candidate target cell through dedicated signaling or broadcast messages;

[0231] Subsequently, the following step 2 is performed for the EMC cell (corresponding to sending configuration information to the terminal according to the capability information).

[0232] Step 2: The network side sends the first configuration information (corresponding to the above-mentioned sending of configuration information to the terminal), and the first configuration information may be the configuration information of the conditional switching. Specifically:

[0233] Optional method 1: The first configuration information includes a first reference location (reference location), and the reference location is the actual geographical location of the satellite cell projected on the ground, and is an absolute geographical coordinate (corresponding to the above-mentioned first reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location), such as GPS coordinates, and the first reference location is associated with the first ephemeris information. Specific association methods include:

[0234] The first configuration information includes the first reference location information, and optionally, includes the first epochTime (new era time) information (corresponding to the above-mentioned first time information), which is used to indicate the coordinates of the cell reference point at which time the first reference location information is (corresponding to the above-mentioned valid time corresponding to the first reference location information); and the first index information, which is used to indicate the index relationship between the first reference location information and the ephemeris in the broadcast message, that is, indicating the ephemeris of the satellite to which the cell belongs (corresponding to the above-mentioned first index information, used to indicate the first ephemeris information corresponding to the first reference location information). For example, index0 in the first index list represents the ntn-config (NTN configuration) information indicated by SIB19, and index1 represents the first indication information in ntn-NeighCellConfigList (NTN neighbor configuration list) and / or ntn-NeighCellConfigListExt (NTN neighbor configuration extension list) in the neighbor configuration list. In another way, the first reference location information includes the reference location of the serving cell and / or the reference location of the pre-configured cell (i.e., the candidate target cell) (corresponding to the above-mentioned first reference location information used to indicate the reference location of the serving cell and / or the reference location of the candidate target cell). The serving cell reference position is used to indicate the reference position information of the serving cell, and the pre-configured cell reference position is used to indicate the pre-configured cell reference position. The first index information includes first ephemeris index information and / or second ephemeris index information, wherein the first ephemeris index information is used to indicate the ephemeris information corresponding to the serving cell, and the second ephemeris index information is used to indicate the ephemeris information corresponding to the pre-configured cell.

[0235] Optionally, if the reference position in the configuration message is missing, the UE considers that the reference position of the cell (where the reference position is missing) is the sub-satellite point (of the satellite currently serving the UE);

[0236] Optionally, a first duration is defined, where the first duration indicates a valid time length of the first reference position (corresponding to the first duration information, used to indicate a valid time length of the first reference position information). Specifically, the scheme for associating the terminal with the ephemeris information includes the following manners:

[0237] Mode 1: After the UE obtains the execution condition (corresponding to the above-mentioned switching condition), it immediately obtains the broadcast message, and uses the epoch time of the respective ephemeris information in the broadcast message as the starting effective time of the corresponding reference position in the first reference position information (corresponding to the above-mentioned second time information, used to indicate the effective starting moment of the first reference position information; the second time information is the ephemeris information). For example, the epoch time in the ntn-Config indicated by SIB19 indicates the starting effective time of the corresponding reference position of the serving cell, and the epoch time in the Nth indication in ntn-NeighCellConfigList and / or ntn-NeighCellConfigListExt indicates the starting effective time of the reference position of the Nth pre-configured cell.

[0238] Optionally, the first configuration information includes: valid duration Duration1 (corresponding to the first duration information, used to indicate the valid duration of the first reference location information). Within [epochTime, epochTime+Duration1], the terminal considers the reference location to be valid, otherwise the terminal considers the reference location to be invalid.

[0239] Mode 2: The first configuration information includes the start time T1 (corresponding to the above-mentioned second time information) and / or the valid time Duration2 (corresponding to the above-mentioned first duration information) of the first reference location information. Within the time [T1, T1+Duration2], the terminal considers that the first reference location information is valid. Specifically, T1 and / or Duration 2 of the first configuration information are separately configured for multiple reference locations in the reference location information (corresponding to that the second time information is separately configured for each reference location corresponding to the first reference location information; and / or, the first duration information is separately configured for each reference location corresponding to the first reference location information).

[0240] In combination with mode 1 or 2, the terminal combines the first reference location information and ephemeris information, such as the relative position between the reference location and the sub-satellite point (corresponding to the above-mentioned first relative location information and / or the second relative location information), and then calculates the future reference location (i.e., the reference point position after the satellite moves), and determines whether the first enter / leave condition is met according to the first distance threshold information (which may correspond to the above-mentioned Thresh2, Thresh4, Thresh6), thereby determining whether the execution condition (i.e., the switching condition) of CHO is met. The first distance threshold information is used to indicate the distance threshold for the reference location indicated in the first reference point information.

[0241] Optional mode 2: The first reference information is used to indicate the relative position of the (terminal) relative to the sub-satellite point (corresponding to the first reference position information being the position information of the sub-satellite point of the terminal relative to the satellite device belonging to the serving cell or the neighboring cell), and the sub-satellite point can be obtained by calculating the ephemeris information. In this scenario:

[0242] Optionally, a valid duration Duration3 (corresponding to the reference point valid time information of the above-mentioned first reference point) may be defined for the first reference position information;

[0243] Optionally, when the ephemeris information associated with any reference point is invalid, or the ephemeris information associated with two reference points is invalid, or the ephemeris information associated with the serving cell is invalid, the UE may consider that the pre-configured cell is invalid.

[0244] Optional method three: The terminal calculates the real-time reference position based on the stored ephemeris information (corresponding to the second ephemeris information associated with the first parameter information) and the stored valid start time (corresponding to the valid time information corresponding to the second ephemeris information).

[0245] In the above, method 1 gives the association between the reference position and the ephemeris, method 2 gives the relative (reference point) position and the valid time of the position; method 3 gives the correspondence between time and position stored in the UE (which can be directly applied); these three methods can be selected or used in combination at will, and are not limited here.

[0246] Step 3: The terminal determines whether to perform handover based on the calculated real-time reference position of the cell (ie, the real-time reference point position) and the trigger condition (ie, the handover condition).

[0247] Specifically, the calculation method of the real-time reference point position may include:

[0248] The terminal calculates the sub-satellite point position according to the ephemeris information, and calculates the updated reference location according to the relative position of the sub-satellite point position and the reference position (the above method 1 gives the reference point position at a certain moment, and here is the reference point position after the update moment).

[0249] The ephemeris information may be obtained according to step 2 (method 1, 2), or stored in method 3;

[0250] Specifically, the relative position information (including the above-mentioned first relative position information and / or second relative position information) can be calculated by the terminal based on the absolute reference position information and the sub-satellite point according to method 1 in step 2, or notified according to the first configuration information in method 2; it is not limited here.

[0251] Specific, combined Figure 3The method for the terminal to calculate the reference location according to the above information (corresponding to obtaining the first parameter information according to the current time and the configuration information) may include the following operations:

[0252] Step 1: At time T1, the terminal calculates the sub-satellite position (at time T1) based on the ephemeris information;

[0253] Step 2: At time T2, the terminal calculates the offset position (i.e., relative position information (including the first relative position information and / or the second relative position information)) from the sub-satellite point according to the current first reference location information;

[0254] Step 3: When the satellite moves, at time T2, the terminal calculates the sub-satellite position (at time T2) based on the ephemeris information, and calculates the reference location at time T2 based on the offset position in Step 2.

[0255] Optionally, according to different scenarios, the switching conditions are as follows:

[0256] (1) Switching from EFC to EMC or EMC feeder switch scenario:

[0257] Judgment based on time + judgment based on location conditions, that is, when the terminal judges whether the serving cell meets the (switching) conditions, it follows the judgment conditions based on time, and when judging whether the alternative target cell meets the switching conditions, it can judge based on distance.

[0258] 1) The specific entry events are:

[0259] Mt>Thresh1, where Mt represents the time measured by the terminal (corresponding to the current moment mentioned above), and Thresh1 is a parameter configured on the network side. For example, the time may be a certain moment some time before the serving cell stops serving (corresponding to the first moment mentioned above) or the time when the serving cell is about to stop serving (due to the end of the serving cell coverage time or the need to update the gNB of the serving satellite) (corresponding to the time when the serving cell is about to stop serving). The time measured here refers to the time measured by the terminal according to the terminal clock, which may be continuously measured.

[0260] Ml2 + Hys1 < Thresh2, where Ml2 represents the position of the terminal (corresponding to the distance corresponding to the above-mentioned second relative position information), that is, it is represented by the distance from the terminal to the reference position in this event, Hys1 represents the hysteresis value (corresponding to the above-mentioned first hysteresis value), and Thresh2 is a distance threshold, for example, it can represent the distance threshold of the terminal from the alternative target cell (corresponding to the above-mentioned second configuration parameter value, used to indicate the threshold value of the relative distance between the second position information and the third position information);

[0261] Optionally, when both of the above two conditions are satisfied, it is considered that the entry condition of this event is satisfied. The position of the terminal is the geographical location obtained by the terminal in real time, which can be obtained by the terminal periodically.

[0262] 2) Exit event:

[0263] Mt > Thresh5 + Duration, where Mt represents the time measured by the terminal (corresponding to the above-mentioned current time), Thresh5 represents a parameter configured by the network side (corresponding to the above-mentioned fifth configuration parameter value, which can be the same as Thresh1, but is not limited), for example, this parameter can be a certain moment before the serving cell stops serving (corresponding to the above-mentioned second moment) or the time when the serving cell is about to stop serving (due to the end of the coverage time of the serving cell or the need to update the gNB by the serving satellite) (corresponding to the time when the serving cell desires to stop serving), where Duration is a duration parameter (corresponding to the above-mentioned first delay length), for example, Thresh5 + Duration represents the time when the serving cell stops serving.

[0264] Ml2 - Hys3 > Thresh6, where Ml2 represents the position of the terminal (corresponding to the distance corresponding to the above-mentioned second relative position information), Hys3 represents the hysteresis value (corresponding to the above-mentioned third hysteresis value), and Thresh6 represents the distance threshold (corresponding to the above-mentioned sixth configuration parameter value, which can be the same as Thresh2, but is not limited); specifically, for example, it can mean that when the terminal is at a distance greater than a certain threshold value from the alternative target cell, the terminal considers that the exit event is satisfied.

[0265] Optionally, when at least one of the above two conditions is satisfied, it is considered that the exit condition of this event is satisfied; but this is not limited thereto.

[0266] (2) When switching from EMC to EFC:

[0267] Based on geographical location judgment + time judgment, that is, when the terminal judges whether the serving cell meets the (handover) condition, it is based on the distance-based judgment condition, while when judging whether the alternative target cell meets the handover condition, it can be judged in a time-based manner.

[0268] 1) The specific entry events are:

[0269] Mt>Thresh3, where Mt represents the time measured by the terminal (corresponding to the current time), Thresh3 is configured and optional, and Thresh3 represents the time when the candidate target cell can provide services (corresponding to the third configuration parameter value, used to indicate the time when the candidate target cell can provide services);

[0270] Ml2'-Hys2>Thresh4, where Ml2' represents the position of the terminal (corresponding to the distance corresponding to the above-mentioned first relative position information), that is, represented by the distance between the terminal and the reference position in this event, Hys2 represents a hysteresis value (corresponding to the above-mentioned second hysteresis value), and Thresh4 is a distance threshold (corresponding to the above-mentioned fourth configuration parameter value, used to indicate the threshold value of the relative distance between the second position information and the first position information). For example, this event may indicate that the terminal enters the target cell when the distance from the serving cell is greater than a certain distance threshold;

[0271] Optionally, when both of the above two conditions are met, it is considered that the entry condition of the event is met; specifically, when the serving cell meets the condition and one of the candidate target cells meets the condition, the terminal determines the candidate target cell as the target cell.

[0272] 2) Leave event:

[0273] Mt>Thresh7+Duration′, where Mt represents the time measured by the terminal (corresponding to the current moment mentioned above), Thresh7 is configured (corresponding to the seventh configuration parameter value mentioned above, which may be the same as Thresh3, but is not limited to it). For example, this parameter may represent the time during which the alternative target cell can provide services, where Duration' represents a delay (corresponding to the second delay duration mentioned above), for example, Thresh7+Duration' represents the time when the alternative target cell stops providing services.

[0274] Optionally, when the above conditions are met, the leaving condition of the event is considered to be met; but this is not limited to this.

[0275] Step 4: When the terminal meets the entry condition, the terminal selects the corresponding candidate target cell to perform conditional switching; specifically, the terminal selects the candidate target cell that meets the condition to perform conditional switching, and the candidate target cell that meets the condition is defined as the target cell.

[0276] It is explained here that in this solution: when the terminal cannot obtain the first ephemeris information, the terminal can abandon (i.e., discard) the first reference location information and / or perform the RRC reconstruction process, but it is not limited to this. Specifically, when the terminal cannot obtain the broadcast message, the terminal cannot obtain the first ephemeris information.

[0277] Embodiment 2: Add the ephemeris information of the serving cell and the alternative target cell (corresponding to the second ephemeris information associated with the first parameter information) in the execution condition configuration of the CHO configuration message (corresponding to the above-mentioned configuration information), and the terminal directly obtains the reference location (corresponding to the initial reference point position information of the above-mentioned first reference point) and the ephemeris information of the serving cell and the alternative target cell, so as to determine whether to perform conditional switching.

[0278] Step 1 (same as in Embodiment 1): the network side indicates the cell attributes of the serving cell, the neighboring cell or the candidate target cell, such as whether it belongs to an Earth moving cell or an Earth fixed cell; corresponding to the above-mentioned sending of cell attribute indication information to the terminal;

[0279] Optionally, the terminal reports the capability of supporting EMC mobility according to the network side type; corresponding to the above-mentioned sending capability information for EMC mobility to the network device according to the cell attribute indication information.

[0280] Optionally, the network side may notify the cell attributes of the serving cell or the neighboring cell or the candidate target cell through dedicated signaling or broadcast messages;

[0281] Subsequently, the following step 2 is performed for the EMC cell (corresponding to sending configuration information to the terminal according to the capability information).

[0282] Step 2: The network side sends the first configuration information (corresponding to the above-mentioned sending of configuration information to the terminal), so the first configuration information can be the configuration information of conditional switching. Specifically:

[0283] The first configuration information may include ephemeris information (of the serving cell and the candidate target cell) and reference location information (at a certain moment) (corresponding to the initial reference point location information of the above-mentioned first reference point).

[0284] Specifically, the terminal can calculate the corresponding sub-satellite point position according to the ephemeris information in the configuration information; and calculate the relative position between the reference location and the sub-satellite point according to the reference location information in the configuration information. Then, the position of the subsequent sub-satellite point (which can be the projection position of the satellite) can be inferred according to the ephemeris information, and the subsequent reference location information can be calculated according to the relative position obtained above;

[0285] Alternatively, the network notifies the terminal of the relative position of the sub-satellite point and the reference location (at a certain moment), and the terminal calculates the subsequent sub-satellite point position based on the ephemeris information, and calculates the subsequent reference location position (i.e., the real-time reference point position) based on the relative position.

[0286] Step 3: The terminal determines whether to perform handover based on the calculated real-time reference position of the cell (ie, the real-time reference point position) and the trigger condition (ie, the handover condition).

[0287] Optionally, according to different scenarios, the switching conditions are as follows:

[0288] (1) Switching from EFC to EMC or EMC feeder switch scenario:

[0289] Judgment based on time + judgment based on location conditions, that is, when the terminal judges whether the serving cell meets the (switching) conditions, it follows the judgment conditions based on time, and when judging whether the alternative target cell meets the switching conditions, it can judge based on distance.

[0290] 1) The specific entry events are:

[0291] Mt>Thresh1, where Mt represents the time measured by the terminal (corresponding to the current moment mentioned above), and Thresh1 is a parameter configured on the network side. For example, the time may be a certain moment some time before the serving cell stops serving (corresponding to the first moment mentioned above) or the time when the serving cell is about to stop serving (due to the end of the serving cell coverage time or the need to update the gNB of the serving satellite) (corresponding to the time when the serving cell is about to stop serving). The time measured here refers to the time measured by the terminal according to the terminal clock, which may be continuously measured.

[0292] Ml2 + Hys1 < Thresh2, where Ml2 represents the position of the terminal (corresponding to the distance corresponding to the above-mentioned second relative position information), that is, it is represented by the distance from the terminal to the reference position in this event, Hys1 represents the hysteresis value (corresponding to the above-mentioned first hysteresis value), and Thresh2 is a distance threshold, for example, it can represent the distance threshold of the terminal from the alternative target cell (corresponding to the above-mentioned second configuration parameter value, used to indicate the threshold value of the relative distance between the second position information and the third position information);

[0293] Optionally, when both of the above two conditions are satisfied, it is considered that the entry condition of this event is satisfied. The position of the terminal is the geographical location obtained by the terminal in real time, which can be obtained by the terminal periodically.

[0294] 2) Departure event:

[0295] Mt > Thresh5 + Duration, where Mt represents the time measured by the terminal (corresponding to the above-mentioned current moment), Thresh5 represents a parameter configured by the network side (corresponding to the above-mentioned fifth configuration parameter value, which can be the same as Thresh1, but is not limited), for example, this parameter can be a certain moment before the serving cell stops serving (corresponding to the above-mentioned second moment) or (due to the end of the coverage time of the serving cell or the need to update the gNB by the serving satellite) the time when the serving cell is about to stop serving (corresponding to the time when the serving cell wants to stop serving), where Duration is a duration parameter (corresponding to the above-mentioned first delay length), for example, Thresh5 + Duration represents the time when the serving cell stops serving.

[0296] Ml2 - Hys3 > Thresh6, where Ml2 represents the position of the terminal (corresponding to the distance corresponding to the above-mentioned second relative position information), Hys3 represents the hysteresis value (corresponding to the above-mentioned third hysteresis value), and Thresh6 represents the distance threshold (corresponding to the above-mentioned sixth configuration parameter value, which can be the same as Thresh2, but is not limited); specifically, for example, it can represent that when the terminal is at a distance greater than a certain threshold value from the alternative target cell, the terminal considers that the departure event is satisfied.

[0297] Optionally, when at least one of the above two conditions is satisfied, it is considered that the departure condition of this event is satisfied; but this is not limited thereto.

[0298] (2) When switching from EMC to EFC:

[0299] Based on geographical location judgment + time judgment, that is, when the terminal judges whether the serving cell meets the (handover) condition, it is based on the distance-based judgment condition, while when judging whether the alternative target cell meets the handover condition, it can be judged in a time-based manner.

[0300] 1) The specific entry events are:

[0301] Mt>Thresh3, where Mt represents the time measured by the terminal (corresponding to the current time), Thresh3 is configured and optional, and Thresh3 represents the time when the candidate target cell can provide services (corresponding to the third configuration parameter value, used to indicate the time when the candidate target cell can provide services);

[0302] Ml2'-Hys2>Thresh4, where Ml2' represents the position of the terminal (corresponding to the distance corresponding to the above-mentioned first relative position information), that is, represented by the distance between the terminal and the reference position in this event, Hys2 represents a hysteresis value (corresponding to the above-mentioned second hysteresis value), and Thresh4 is a distance threshold (corresponding to the above-mentioned fourth configuration parameter value, used to indicate the threshold value of the relative distance between the second position information and the first position information). For example, this event may indicate that the terminal enters the target cell when the distance from the serving cell is greater than a certain distance threshold;

[0303] Optionally, when both of the above two conditions are met, the entry condition of the event is considered to be met.

[0304] 2) Leave event:

[0305] Mt>Thresh7+Duration′, where Mt represents the time measured by the terminal (corresponding to the current moment mentioned above), Thresh7 is configured (corresponding to the seventh configuration parameter value mentioned above, which may be the same as Thresh3, but is not limited to it). For example, this parameter may represent the time during which the alternative target cell can provide services, where Duration' represents a delay (corresponding to the second delay duration mentioned above), for example, Thresh7+Duration' represents the time when the alternative target cell stops providing services.

[0306] Optionally, when the above conditions are met, the leaving condition of the event is considered to be met; but this is not limited to this.

[0307] Step 4: When the terminal meets the entry condition, the terminal selects a candidate target cell that meets the condition to perform conditional switching, and the candidate target cell that meets the condition is defined as the target cell.

[0308] Embodiment 3: The network side adds a time window [t1, t2] and a reference location (corresponding to the reference point valid time information of the above-mentioned first reference point and the initial reference point position information of the first reference point) for the terminal to judge the conditional switching in the execution condition configuration (corresponding to the above-mentioned configuration information) of the CHO configuration message, that is, the terminal calculates whether the CHO condition is met according to the reference location within the time window [t1, t2], thereby determining whether to perform the conditional switching.

[0309] Step 1 (same as in Embodiment 1): the network side indicates the cell attributes of the serving cell, the neighboring cell or the candidate target cell, such as whether it belongs to an Earth moving cell or an Earth fixed cell; corresponding to the above-mentioned sending of cell attribute indication information to the terminal;

[0310] Optionally, the terminal reports the capability of supporting EMC mobility according to the network side type; corresponding to the above-mentioned sending capability information for EMC mobility to the network device according to the cell attribute indication information.

[0311] Optionally, the network side may notify the cell attributes of the serving cell or the neighboring cell or the candidate target cell through dedicated signaling or broadcast messages;

[0312] Subsequently, the following step 2 is performed for the EMC cell (corresponding to sending configuration information to the terminal according to the capability information).

[0313] Step 2: The network side sends the first configuration information (corresponding to the above-mentioned sending of configuration information to the terminal), so the first configuration information can be the configuration information of conditional switching.

[0314] Specifically, the configuration information may include a reference location valid time window [t1, t2].

[0315] Step 3: The terminal obtains the terminal position (corresponding to the above-mentioned second position information) within the valid window [t1, t2], and determines the distance to the reference location (which may correspond to the above-mentioned relative position information (including the above-mentioned first relative position information and / or the second relative position information)), and then determines whether the switching condition is met. The specific conditions can refer to step 3 in embodiment 1, as follows:

[0316] Optionally, according to different scenarios, the switching conditions are as follows:

[0317] (1) Switching from EFC to EMC or EMC feeder switch scenario:

[0318] Based on time judgment + based on location condition judgment, that is, when the terminal determines whether the serving cell meets the (handover) condition, it is based on the time-based judgment condition, while when determining whether the alternative target cell meets the handover condition, it can be judged according to the distance method.

[0319] 1) The specific entry event is as follows:

[0320] Mt > Thresh1, where Mt represents the time measured by the terminal (corresponding to the above-mentioned current moment), and Thresh1 is a parameter configured by the network side. For example, this time can be a certain moment during a period before the serving cell stops serving (corresponding to the above-mentioned first moment) or the time when the serving cell is about to stop serving (due to the end of the serving cell coverage time or the need to update the gNB by the serving satellite, corresponding to the time when the serving cell desires to stop serving). The time measured here refers to the time measured by the terminal according to the terminal clock and can be continuously measured.

[0321] Ml2 + Hys1 < Thresh2, where Ml2 represents the location of the terminal (corresponding to the distance corresponding to the above-mentioned second relative location information), that is, represented by the distance from the terminal to the reference location in this event, Hys1 represents the hysteresis value (corresponding to the above-mentioned first hysteresis value), and Thresh2 is a distance threshold. For example, it can represent the distance threshold of the terminal from the alternative target cell (corresponding to the above-mentioned second configuration parameter value, used to indicate the threshold value of the relative distance between the second location information and the third location information);

[0322] Optionally, when both of the above two conditions are met, it is considered that the entry condition of this event is satisfied. The location of the terminal is the geographical location obtained by the terminal in real time and can be obtained by the terminal periodically.

[0323] 2) Departure event:

[0324] Mt > Thresh5 + Duration, where Mt represents the time measured by the terminal (corresponding to the above-mentioned current moment), Thresh5 represents a parameter configured by the network side (corresponding to the above-mentioned fifth configuration parameter value, which can be the same as Thresh1, but is not limited), for example, this parameter can be a certain moment during a period before the serving cell stops serving (corresponding to the above-mentioned second moment) or the time when the serving cell is about to stop serving (due to the end of the serving cell coverage time or the need to update the gNB by the serving satellite, corresponding to the time when the serving cell desires to stop serving), where Duration is a duration parameter (corresponding to the above-mentioned first delay length), for example, Thresh5 + Duration represents the time when the serving cell stops serving.

[0325] Ml2-Hys3>Thresh6, where Ml2 represents the position of the terminal (corresponding to the distance corresponding to the above-mentioned second relative position information), Hys3 represents the hysteresis value (corresponding to the above-mentioned third hysteresis value), and Thresh6 represents the distance threshold (corresponding to the above-mentioned sixth configuration parameter value, which may be the same as Thresh2, but is not limited to); for example, it can indicate that when the terminal is away from the alternative target cell greater than a certain threshold value, the terminal considers that the departure event is met.

[0326] Optionally, when at least one of the above two conditions is met, the leaving condition of the event is considered to be met; but this is not limited to this.

[0327] (2) When switching from EMC to EFC:

[0328] Based on geographic location judgment + time judgment, that is, when the terminal judges whether the serving cell meets the conditions, it follows the judgment conditions based on distance, and when judging whether the candidate target cell meets the switching conditions, it can judge according to time.

[0329] 1) The specific entry events are:

[0330] Mt>Thresh3, where Mt represents the time measured by the terminal (corresponding to the current time), Thresh3 is configured and optional, and Thresh3 represents the time when the candidate target cell can provide services (corresponding to the third configuration parameter value, used to indicate the time when the candidate target cell can provide services);

[0331] Ml2'-Hys2>Thresh4, where Ml2' represents the position of the terminal (corresponding to the distance corresponding to the above-mentioned first relative position information), that is, represented by the distance between the terminal and the reference position in this event, Hys2 represents a hysteresis value (corresponding to the above-mentioned second hysteresis value), and Thresh4 is a distance threshold (corresponding to the above-mentioned fourth configuration parameter value, used to indicate the threshold value of the relative distance between the second position information and the first position information). For example, this event may indicate that the terminal enters the target cell when the distance from the serving cell is greater than a certain distance threshold;

[0332] Optionally, when both of the above two conditions are met, the entry condition of the event is considered to be met.

[0333] 2) Leave event:

[0334] Mt>Thresh7+Duration′, where Mt represents the time measured by the terminal (corresponding to the current moment mentioned above), Thresh7 is configured (corresponding to the seventh configuration parameter value mentioned above, which may be the same as Thresh3, but is not limited to it). For example, this parameter may represent the time during which the alternative target cell can provide services, where Duration' represents a delay (corresponding to the second delay duration mentioned above), for example, Thresh7+Duration' represents the time when the alternative target cell stops providing services.

[0335] Optionally, when the above conditions are met, the leaving condition of the event is considered to be met; but this is not limited to this.

[0336] Step 4: When the terminal meets the entry condition, the terminal selects the corresponding candidate target cell to perform conditional switching; specifically, the terminal selects the candidate target cell that meets the condition to perform conditional switching, and the candidate target cell that meets the condition is defined as the target cell.

[0337] It is explained here that the relevant contents between the above embodiments can be referred to each other, and the relevant contents between the terminal side and the network device side can also be referred to each other, and the repeated parts will not be repeated.

[0338] From the above, the solution provided by the embodiment of the present application can support: in the EMC scenario, even if the referencelocation changes, the terminal can accurately judge the switching conditions, thereby ensuring that the selected target cell is more accurate, reducing the switching failure rate, and avoiding problems such as dropped calls.

[0339] The embodiment of the present application also provides a cell switching condition determination device, wherein the cell switching condition determination device is a terminal, such as Figure 6 As shown, it includes a memory 61, a transceiver 62, and a processor 63:

[0340] The memory 61 is used to store computer programs; the transceiver 62 is used to send and receive data under the control of the processor 63; the processor 63 is used to read the computer program in the memory 61 and perform the following operations:

[0341] Determining a current time of the terminal;

[0342] According to the current moment, obtaining first parameter information;

[0343] Determining, according to the first parameter information, whether the terminal meets a cell switching condition;

[0344] Wherein, the serving cell and / or the candidate target cell of the terminal is a surface mobile cell EMC;

[0345] The first parameter information includes at least one of the following:

[0346] First location information, where the first location information is reference point location information of a serving cell;

[0347] first relative position information, where the first relative position information is obtained based on the first position information and the second position information, where the first position information is the reference point position information of the serving cell, and the second position information is the position information of the terminal at the current moment;

[0348] second relative position information, where the second relative position information is obtained based on third position information and the second position information, the third position information is reference point position information of the candidate target cell, and the second position information is position information of the terminal at the current moment;

[0349] The third location information is the reference point location information of the candidate target cell.

[0350] The cell switching condition judgment device provided in the embodiment of the present application determines the current time of the terminal; obtains the first parameter information according to the current time; determines whether the terminal meets the cell switching condition according to the first parameter information; wherein the service cell and / or the candidate target cell of the terminal is a surface mobile cell EMC; the first parameter information includes at least one of the following: first location information, the first location information is the reference point location information of the service cell; first relative location information, the first relative location information is obtained according to the first location information and the second location information, the first location information is the reference point location information of the service cell, and the second location information is the location information of the terminal at the current moment; second relative location information, the second relative location information is obtained according to the third location information and the second location information, the third location information is the reference point location information of the candidate target cell, and the second location information is the location information of the terminal at the current moment; third location information, the third location information is the reference point location information of the candidate target cell; it can support the terminal in the EMC scenario, even if the referencelocation changes, it can also accurately judge the switching condition, thereby ensuring the accuracy of the conditional switching, and well solves the problem that the prior art cannot support accurate implementation of the conditional switching in the EMC scenario.

[0351] Specifically, the transceiver 62 is used to receive and send data under the control of the processor 63.

[0352] Among them, Figure 6In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 63 and various circuits of memory represented by memory 61 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 62 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, including wireless channels, wired channels, optical cables, and other transmission media. For different user devices, the user interface 64 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0353] The processor 63 is responsible for managing the bus architecture and general processing, and the memory 61 can store data used by the processor 63 when performing operations.

[0354] Optionally, the processor 63 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD), and the processor may also adopt a multi-core architecture.

[0355] The processor calls the computer program stored in the memory to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0356] Among them, the handover condition includes at least one of the following: (1) Mt > Thresh1 and Ml2 + Hys1 < Thresh2; where Mt represents the current moment, Thresh1 represents a first configuration parameter value for indicating a first moment before the serving cell stops serving or a time when the serving cell intends to stop serving; Ml2 represents the distance corresponding to the second relative position information; Hys1 represents a first hysteresis value; Thresh2 represents a second configuration parameter value for indicating a threshold value of the relative distance between the second position information and the third position information; (2) Mt > Thresh3 and Ml2' - Hys2 > Thresh4; where Mt represents the current moment, Thresh3 represents a third configuration parameter value for indicating a time when the alternative target cell can provide service; Ml2' represents the distance corresponding to the first relative position information, Hys2 represents a second hysteresis value; Thresh4 represents a fourth configuration parameter value for indicating a threshold value of the relative distance between the second position information and the first position information.

[0357] Further, the operation further includes: before obtaining the first parameter information according to the current moment, receiving configuration information sent by a network device through the transceiver; where the configuration information includes at least one of the following: (1) First reference position information; the first reference position information is the actual geographical location of a first reference point and is an absolute geographical location; the first reference position information is associated with first ephemeris information, and the first reference point is a reference point of the serving cell or the alternative target cell; or, the first reference position information is used to indicate the serving cell reference position and / or the alternative target cell reference position; or, the first reference position information is the position information of the terminal relative to the sub-satellite point of the satellite device to which the serving cell or the neighboring cell belongs; (2) Second ephemeris information associated with the first parameter information; (3) Effective time information corresponding to the first ephemeris information and / or the second ephemeris information; (4) Initial reference point position information of the first reference point; (5) Reference point effective time information of the first reference point.

[0358] In an embodiment of the present application, the configuration information further includes at least one of the following: first time information for indicating an effective moment corresponding to the first reference position information; first index information for indicating the first ephemeris information corresponding to the first reference position information; second time information for indicating an effective start moment of the first reference position information; first duration information for indicating an effective duration of the first reference position information.

[0359] Among them, obtaining the first parameter information according to the current moment includes: obtaining the first parameter information according to the current moment and the configuration information.

[0360] Furthermore, the operation also includes: receiving cell attribute indication information sent by the network device through the transceiver; sending capability information for EMC mobility to the network device through the transceiver according to the cell attribute indication information; wherein the cell attribute indication information is used to indicate whether the service cell, neighboring cell and / or alternative target cell of the terminal is an EMC cell.

[0361] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned terminal side method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0362] The embodiment of the present application also provides a cell switching condition determination device, wherein the cell switching condition determination device is a network device, such as Figure 7 As shown, it includes a memory 71, a transceiver 72, and a processor 73:

[0363] The memory 71 is used to store computer programs; the transceiver 72 is used to send and receive data under the control of the processor 73; the processor 73 is used to read the computer program in the memory 71 and perform the following operations:

[0364] Sending configuration information to the terminal via the transceiver 72;

[0365] The configuration information includes at least one of the following:

[0366] First reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location; the first reference location information is associated with the first ephemeris information, and the first reference point is a reference point of a serving cell or an alternative target cell; or, the first reference location information is used to indicate a serving cell reference location and / or an alternative target cell reference location; or, the first reference location information is location information of a sub-satellite point of the terminal relative to a satellite device belonging to the serving cell or a neighboring cell;

[0367] Second ephemeris information associated with the first parameter information;

[0368] Valid time information corresponding to the first ephemeris information and / or the second ephemeris information;

[0369] initial reference point position information of the first reference point;

[0370] Reference point validity time information of the first reference point.

[0371] The cell switching condition determination device provided in the embodiment of the present application sends configuration information to the terminal; wherein the configuration information includes at least one of the following: (1) first reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location; the first reference location information is associated with the first ephemeris information, and the first reference point is the reference point of the serving cell or the candidate target cell; or, the first reference location information is used to indicate the serving cell reference location and / or the candidate target cell reference location; or, the first reference location information is the location information of the terminal relative to the sub-satellite point of the satellite device belonging to the serving cell or the neighboring cell; (2) second ephemeris information associated with the first parameter information; (3) valid time information corresponding to the first ephemeris information and / or the second ephemeris information; (4) initial reference point location information of the first reference point; (5) reference point valid time information of the first reference point; it can support the terminal to accurately obtain the first parameter information, and determine whether the terminal meets the cell switching condition according to the first parameter information; wherein the serving cell and / or the candidate target cell of the terminal is a surface mobile cell EMC; thereby supporting the terminal in the EMC scenario, even if the reference The location changes can also accurately determine the switching conditions, thereby ensuring the accuracy of conditional switching, which is a good solution to the problem that the existing technology cannot support accurate implementation of conditional switching in EMC scenarios.

[0372] Specifically, the transceiver 72 is used to receive and send data under the control of the processor 73.

[0373] Among them, Figure 7 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 73 and various circuits of memory represented by memory 71 are linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 72 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium may include a wireless channel, a wired channel, an optical cable, and other transmission media. The processor 73 is responsible for managing the bus architecture and general processing, and the memory 71 may store data used by the processor 73 when performing operations.

[0374] The processor 73 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0375] Furthermore, the configuration information also includes at least one of the following: first time information, used to indicate the valid time corresponding to the first reference position information; first index information, used to indicate the first ephemeris information corresponding to the first reference position information; second time information, used to indicate the valid start time of the first reference position information; first duration information, used to indicate the valid duration of the first reference position information.

[0376] In an embodiment of the present application, the operation also includes: sending cell attribute indication information to the terminal through the transceiver; receiving capability information for EMC mobility sent by the terminal through the transceiver; sending configuration information to the terminal includes: sending configuration information to the terminal according to the capability information; wherein the cell attribute indication information is used to indicate whether the service cell, neighboring cell and / or alternative target cell of the terminal is an EMC cell.

[0377] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned network device side method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0378] The present application also provides a cell switching condition determination device, which is applied to a terminal, such as Figure 8 As shown, including:

[0379] A first determining unit 81, configured to determine the current time of the terminal;

[0380] A first processing unit 82, configured to obtain first parameter information according to the current moment;

[0381] A second determining unit 83, configured to determine whether the terminal meets a cell switching condition according to the first parameter information;

[0382] Wherein, the serving cell and / or the candidate target cell of the terminal is a surface mobile cell EMC;

[0383] The first parameter information includes at least one of the following:

[0384] First location information, where the first location information is reference point location information of a serving cell;

[0385] first relative position information, where the first relative position information is obtained based on the first position information and the second position information, where the first position information is the reference point position information of the serving cell, and the second position information is the position information of the terminal at the current moment;

[0386] second relative position information, where the second relative position information is obtained based on third position information and the second position information, the third position information is reference point position information of the candidate target cell, and the second position information is position information of the terminal at the current moment;

[0387] The third location information is the reference point location information of the candidate target cell.

[0388] The cell switching condition judgment device provided in the embodiment of the present application determines the current time of the terminal; obtains the first parameter information according to the current time; determines whether the terminal meets the cell switching condition according to the first parameter information; wherein the service cell and / or the candidate target cell of the terminal is a surface mobile cell EMC; the first parameter information includes at least one of the following: first location information, the first location information is the reference point location information of the service cell; first relative location information, the first relative location information is obtained according to the first location information and the second location information, the first location information is the reference point location information of the service cell, and the second location information is the location information of the terminal at the current time; second relative location information, the second relative location information is obtained according to the third location information and the second location information, the third location information is the reference point location information of the candidate target cell, and the second location information is the location information of the terminal at the current time; third location information, the third location information is the reference point location information of the candidate target cell; it can support the terminal in the EMC scenario, even if the referencelocation changes, it can also accurately judge the switching condition, thereby ensuring the accuracy of the conditional switching, and well solves the problem that the prior art cannot support accurate implementation of the conditional switching in the EMC scenario.

[0389] Among them, the handover conditions include at least one of the following: (1) Mt > Thresh1 and Ml2 + Hys1 < Thresh2; where Mt represents the current moment, Thresh1 represents the first configuration parameter value, which is used to indicate the first moment before the serving cell stops serving or the time when the serving cell intends to stop serving; Ml2 represents the distance corresponding to the second relative position information; Hys1 represents the first hysteresis value; Thresh2 represents the second configuration parameter value, which is used to indicate the threshold value of the relative distance between the second position information and the third position information; (2) Mt > Thresh3 and Ml2' - Hys2 > Thresh4; where Mt represents the current moment, Thresh3 represents the third configuration parameter value, which is used to indicate the time when the alternative target cell can provide services; Ml2' represents the distance corresponding to the first relative position information, Hys2 represents the second hysteresis value; Thresh4 represents the fourth configuration parameter value, which is used to indicate the threshold value of the relative distance between the second position information and the first position information.

[0390] Further, the cell handover condition determination device further includes: a first receiving unit, configured to receive configuration information sent by a network device before obtaining the first parameter information according to the current moment; where the configuration information includes at least one of the following: (1) first reference position information; the first reference position information is the actual geographical location of a first reference point and is an absolute geographical location; the first reference position information is associated with first ephemeris information, and the first reference point is a reference point of the serving cell or the alternative target cell; or, the first reference position information is used to indicate the serving cell reference position and / or the alternative target cell reference position; or, the first reference position information is the position information of the terminal relative to the sub-satellite point of the satellite device to which the serving cell or the neighboring cell belongs; (2) second ephemeris information associated with the first parameter information; (3) valid time information corresponding to the first ephemeris information and / or the second ephemeris information; (4) initial reference point position information of the first reference point; (5) reference point valid time information of the first reference point.

[0391] In an embodiment of the present application, the configuration information further includes at least one of the following: first time information, which is used to indicate the valid moment corresponding to the first reference position information; first index information, which is used to indicate the first ephemeris information corresponding to the first reference position information; second time information, which is used to indicate the effective start moment of the first reference position information; first duration information, which is used to indicate the effective duration of the first reference position information.

[0392] The obtaining of the first parameter information according to the current time includes: obtaining the first parameter information according to the current time and the configuration information.

[0393] Furthermore, the cell switching condition determination device also includes: a second receiving unit, used to receive cell attribute indication information sent by a network device; a first sending unit, used to send capability information for EMC mobility to the network device based on the cell attribute indication information; wherein the cell attribute indication information is used to indicate whether the service cell, neighboring cell and / or alternative target cell of the terminal is an EMC cell.

[0394] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned terminal side method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0395] The present application also provides a cell switching condition determination device, which is applied to a network device, such as Fig. 9 As shown, including:

[0396] A second sending unit 91, configured to send configuration information to a terminal;

[0397] The configuration information includes at least one of the following:

[0398] First reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location; the first reference location information is associated with the first ephemeris information, and the first reference point is a reference point of a serving cell or an alternative target cell; or, the first reference location information is used to indicate a serving cell reference location and / or an alternative target cell reference location; or, the first reference location information is location information of a sub-satellite point of the terminal relative to a satellite device belonging to the serving cell or a neighboring cell;

[0399] Second ephemeris information associated with the first parameter information;

[0400] Valid time information corresponding to the first ephemeris information and / or the second ephemeris information;

[0401] initial reference point position information of the first reference point;

[0402] Reference point validity time information of the first reference point.

[0403] The cell switching condition determination device provided in the embodiment of the present application sends configuration information to the terminal; wherein the configuration information includes at least one of the following: (1) first reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location; the first reference location information is associated with the first ephemeris information, and the first reference point is the reference point of the serving cell or the candidate target cell; or, the first reference location information is used to indicate the serving cell reference location and / or the candidate target cell reference location; or, the first reference location information is the location information of the terminal relative to the sub-satellite point of the satellite device belonging to the serving cell or the neighboring cell; (2) second ephemeris information associated with the first parameter information; (3) valid time information corresponding to the first ephemeris information and / or the second ephemeris information; (4) initial reference point location information of the first reference point; (5) reference point valid time information of the first reference point; it can support the terminal to accurately obtain the first parameter information, and determine whether the terminal meets the cell switching condition according to the first parameter information; wherein the serving cell and / or the candidate target cell of the terminal is a surface mobile cell EMC; thereby supporting the terminal in the EMC scenario, even if the reference The location changes can also accurately determine the switching conditions, thereby ensuring the accuracy of conditional switching, which is a good solution to the problem that the existing technology cannot support accurate implementation of conditional switching in EMC scenarios.

[0404] Furthermore, the configuration information also includes at least one of the following: first time information, used to indicate the valid time corresponding to the first reference position information; first index information, used to indicate the first ephemeris information corresponding to the first reference position information; second time information, used to indicate the valid start time of the first reference position information; first duration information, used to indicate the valid duration of the first reference position information.

[0405] In an embodiment of the present application, the cell switching condition determination device further includes: a third sending unit, used to send cell attribute indication information to the terminal; a third receiving unit, used to receive capability information for EMC mobility sent by the terminal; the sending of configuration information to the terminal includes: sending configuration information to the terminal according to the capability information; wherein the cell attribute indication information is used to indicate whether the serving cell, neighboring cell and / or alternative target cell of the terminal is an EMC cell.

[0406] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned network device side method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0407] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0408] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0409] An embodiment of the present application also provides a non-transitory readable storage medium, which stores a computer program, and the computer program is used to enable a processor to execute the above-mentioned method on the terminal side or the network device side.

[0410] The non-transitory readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical (MO)), etc.), optical storage (such as compact discs (CD), digital video discs (DVD), Blu-ray discs (BD), high-definition versatile discs (HVD), etc.), and semiconductor memories (such as ROM, erasable programmable read-only memory (EPROM), electrically erasable programmable read only memory (EEPROM), non-volatile memory (NAND (Non-volatile Memory Device) FLASH), solid-state drives (SSD)), etc.

[0411] Among them, the implementation embodiments of the methods on the above-mentioned terminal side or network device side are all applicable to the embodiments of the non-transitory readable storage medium, and can also achieve the same technical effects.

[0412] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0413] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0414] These processor executable instructions may also be stored in a processor readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0415] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0416] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for determining a cell switching condition, applied to a terminal, characterized in that: Including: Determine the current time of the terminal; Obtain first parameter information according to the current time; Determine whether the terminal meets the cell handover condition according to the first parameter information; Wherein, the serving cell and / or the alternative target cell of the terminal is a surface mobile cell EMC; The first parameter information includes at least one of the following: First position information, where the first position information is the reference point position information of the serving cell; First relative position information, where the first relative position information is obtained according to the first position information and the second position information, the first position information is the reference point position information of the serving cell, and the second position information is the position information of the terminal at the current time; Second relative position information, where the second relative position information is obtained according to the third position information and the second position information, the third position information is the reference point position information of the alternative target cell, and the second position information is the position information of the terminal at the current time; Third position information, where the third position information is the reference point position information of the alternative target cell.

2. The method for determining a cell switching condition according to claim 1, wherein: The handover condition includes at least one of the following: Mt > Thresh1, and Ml2 + Hys1 < Thresh2; where, Mt represents the current time, Thresh1 represents the first configured parameter value, which is used to indicate the first time before the serving cell stops serving or the time when the serving cell intends to stop serving; Ml2 represents the distance corresponding to the second relative position information; Hys1 represents the first hysteresis value; Thresh2 represents the second configured parameter value, which is used to indicate the threshold value of the relative distance between the second position information and the third position information; Mt > Thresh3, and Ml2' - Hys2 > Thresh4; where, Mt represents the current time, Thresh3 represents the third configured parameter value, which is used to indicate the time when the alternative target cell can provide service; Ml2' represents the distance corresponding to the first relative position information, Hys2 represents the second hysteresis value; Thresh4 represents the fourth configured parameter value, which is used to indicate the threshold value of the relative distance between the second position information and the first position information.

3. The method for determining a cell switching condition according to claim 1, wherein: Before obtaining the first parameter information according to the current time, it further includes: Receive configuration information sent by the network device; Wherein, the configuration information includes at least one of the following: First reference position information; the first reference position information is the actual geographical location of the first reference point and is an absolute geographical location; the first reference position information is associated with the first ephemeris information, and the first reference point is the reference point of the serving cell or the alternative target cell; or, the first reference position information is used to indicate the serving cell reference position and / or the alternative target cell reference position; or, the first reference position information is the position information of the terminal relative to the sub-satellite point of the satellite device to which the serving cell or the neighboring cell belongs; Second ephemeris information associated with the first parameter information; Valid time information corresponding to the first ephemeris information and / or the second ephemeris information; initial reference point position information of the first reference point; Reference point validity time information of the first reference point.

4. The method for determining a cell switching condition according to claim 3, characterized in that: The configuration information also includes at least one of the following: First time information, used to indicate the valid time corresponding to the first reference position information; first index information, used to indicate first ephemeris information corresponding to the first reference position information; second time information, used to indicate a valid start time of the first reference position information; The first duration information is used to indicate the valid duration of the first reference position information.

5. The method for determining a cell switching condition according to claim 3, characterized in that: The obtaining of first parameter information according to the current moment includes: First parameter information is obtained according to the current time and the configuration information.

6. The method for determining a cell switching condition according to claim 1, wherein: Also includes: Receiving cell attribute indication information sent by a network device; Sending capability information for EMC mobility to the network device according to the cell attribute indication information; The cell attribute indication information is used to indicate whether the serving cell, neighboring cell and / or candidate target cell of the terminal is an EMC cell.

7. A method for determining a cell switching condition, applied to a network device, characterized in that: include: Send configuration information to the terminal; The configuration information includes at least one of the following: First reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location; the first reference location information is associated with the first ephemeris information, and the first reference point is a reference point of a serving cell or an alternative target cell; or, the first reference location information is used to indicate a serving cell reference location and / or an alternative target cell reference location; or, the first reference location information is location information of a sub-satellite point of the terminal relative to a satellite device belonging to the serving cell or a neighboring cell; Second ephemeris information associated with the first parameter information; Valid time information corresponding to the first ephemeris information and / or the second ephemeris information; initial reference point position information of the first reference point; Reference point validity time information of the first reference point.

8. The method for determining a cell switching condition according to claim 7, characterized in that: The configuration information also includes at least one of the following: First time information, used to indicate the valid time corresponding to the first reference position information; first index information, used to indicate first ephemeris information corresponding to the first reference position information; second time information, used to indicate a valid start time of the first reference position information; The first duration information is used to indicate the valid duration of the first reference position information.

9. The method for determining a cell switching condition according to claim 7, wherein: Also includes: Sending cell attribute indication information to the terminal; Receiving capability information for EMC mobility sent by the terminal; The sending of configuration information to the terminal includes: Sending configuration information to the terminal according to the capability information; The cell attribute indication information is used to indicate whether the serving cell, neighboring cell and / or candidate target cell of the terminal is an EMC cell.

10. A cell switching condition determination device, the cell switching condition determination device being a terminal, characterized in that: Including memory, transceiver, processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: Determining a current time of the terminal; According to the current moment, obtaining first parameter information; Determine whether the terminal meets the cell handover condition according to the first parameter information; Wherein, the serving cell and / or the alternative target cell of the terminal is a surface mobile cell EMC; The first parameter information includes at least one of the following: First position information, where the first position information is the reference point position information of the serving cell; First relative position information, where the first relative position information is obtained based on the first position information and the second position information, the first position information is the reference point position information of the serving cell, and the second position information is the position information of the terminal at the current moment; Second relative position information, where the second relative position information is obtained based on the third position information and the second position information, the third position information is the reference point position information of the alternative target cell, and the second position information is the position information of the terminal at the current moment; Third position information, where the third position information is the reference point position information of the alternative target cell.

11. The cell switching condition determination device according to claim 10, characterized in that: The handover condition includes at least one of the following: Mt>Thresh1 and Ml2+Hys1<Thresh2; where, Mt represents the current moment, Thresh1 represents the first configuration parameter value, which is used to indicate the first moment before the serving cell stops serving or the time when the serving cell intends to stop serving; Ml2 represents the distance corresponding to the second relative position information; Hys1 represents the first hysteresis value; Thresh2 represents the second configuration parameter value, which is used to indicate the threshold value of the relative distance between the second position information and the third position information; Mt>Thresh3 and Ml2’-Hys2>Thresh4; where, Mt represents the current moment, Thresh3 represents the third configuration parameter value, which is used to indicate the time when the alternative target cell can provide service; Ml2’ represents the distance corresponding to the first relative position information, Hys2 represents the second hysteresis value; Thresh4 represents the fourth configuration parameter value, which is used to indicate the threshold value of the relative distance between the second position information and the first position information.

12. The cell switching condition determination device according to claim 10, characterized in that: The operation further includes: Before obtaining the first parameter information according to the current moment, receive configuration information sent by the network device through the transceiver; Wherein, the configuration information includes at least one of the following: First reference position information; the first reference position information is the actual geographical location of the first reference point and is an absolute geographical location; the first reference position information is associated with the first ephemeris information, and the first reference point is the reference point of the serving cell or the alternative target cell; or, the first reference position information is used to indicate the serving cell reference position and / or the alternative target cell reference position; or, the first reference position information is the position information of the terminal relative to the sub-satellite point of the satellite device to which the serving cell or neighboring cell belongs; Second ephemeris information associated with the first parameter information; Valid time information corresponding to the first ephemeris information and / or the second ephemeris information; Initial reference point position information of the first reference point; Reference point validity time information of the first reference point.

13. The cell switching condition determination device according to claim 12, characterized in that: The configuration information also includes at least one of the following: First time information, used to indicate the valid time corresponding to the first reference position information; first index information, used to indicate first ephemeris information corresponding to the first reference position information; second time information, used to indicate a valid start time of the first reference position information; The first duration information is used to indicate the valid duration of the first reference position information.

14. The cell switching condition determination device according to claim 12, characterized in that: The obtaining of first parameter information according to the current moment includes: First parameter information is obtained according to the current time and the configuration information.

15. The cell switching condition determination device according to claim 10, characterized in that: The operations also include: Receiving cell attribute indication information sent by a network device through the transceiver; According to the cell attribute indication information, sending capability information for EMC mobility to the network device through the transceiver; The cell attribute indication information is used to indicate whether the serving cell, neighboring cell and / or candidate target cell of the terminal is an EMC cell.

16. A cell switching condition determination device, the cell switching condition determination device being a network device, characterized in that: Including memory, transceiver, processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: Sending configuration information to the terminal via the transceiver; The configuration information includes at least one of the following: First reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location; the first reference location information is associated with the first ephemeris information, and the first reference point is a reference point of a serving cell or an alternative target cell; or, the first reference location information is used to indicate a serving cell reference location and / or an alternative target cell reference location; or, the first reference location information is location information of a sub-satellite point of the terminal relative to a satellite device belonging to the serving cell or a neighboring cell; Second ephemeris information associated with the first parameter information; Valid time information corresponding to the first ephemeris information and / or the second ephemeris information; initial reference point position information of the first reference point; Reference point validity time information of the first reference point.

17. The cell switching condition determination device according to claim 16, characterized in that: The configuration information also includes at least one of the following: First time information, used to indicate the valid time corresponding to the first reference position information; first index information, used to indicate first ephemeris information corresponding to the first reference position information; second time information, used to indicate a valid start time of the first reference position information; The first duration information is used to indicate the valid duration of the first reference position information.

18. The cell switching condition determination device according to claim 16, characterized in that: The operations also include: Sending cell attribute indication information to the terminal through the transceiver; Receiving, by the transceiver, capability information for EMC mobility sent by the terminal; The sending of configuration information to the terminal includes: Sending configuration information to the terminal according to the capability information; The cell attribute indication information is used to indicate whether the serving cell, neighboring cell and / or candidate target cell of the terminal is an EMC cell.

19. A cell switching condition determination device, applied to a terminal, characterized in that: include: A first determining unit, configured to determine a current time of the terminal; A first processing unit, configured to obtain first parameter information according to the current moment; A second determining unit, configured to determine whether the terminal meets a cell switching condition according to the first parameter information; Wherein, the serving cell and / or the candidate target cell of the terminal is a surface mobile cell EMC; The first parameter information includes at least one of the following: First location information, where the first location information is reference point location information of a serving cell; first relative position information, where the first relative position information is obtained based on the first position information and the second position information, where the first position information is the reference point position information of the serving cell, and the second position information is the position information of the terminal at the current moment; second relative position information, where the second relative position information is obtained based on third position information and the second position information, the third position information is reference point position information of the candidate target cell, and the second position information is position information of the terminal at the current moment; The third location information is the reference point location information of the candidate target cell.

20. A cell switching condition determination device, applied to a network device, characterized in that: include: A second sending unit, used to send configuration information to the terminal; The configuration information includes at least one of the following: First reference location information; the first reference location information is the actual geographical location of the first reference point, and is an absolute geographical location; the first reference location information is associated with the first ephemeris information, and the first reference point is a reference point of a serving cell or an alternative target cell; or, the first reference location information is used to indicate a serving cell reference location and / or an alternative target cell reference location; or, the first reference location information is location information of a sub-satellite point of the terminal relative to a satellite device belonging to the serving cell or a neighboring cell; Second ephemeris information associated with the first parameter information; Valid time information corresponding to the first ephemeris information and / or the second ephemeris information; initial reference point position information of the first reference point; Reference point validity time information of the first reference point.

21. A non-transitory readable storage medium, characterized in that: The non-transitory readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the method according to any one of claims 1 to 9.

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