Communication method, communication device, communication system, storage medium, and computer program product

Abstract

Embodiments of the present disclosure provide a communication method, a communication device, a communication system, a storage medium, and a computer program product. The communication method is executed by a first core network device, and comprises: sending first information to a terminal, wherein the first information is used for indicating an area to which a satellite identifier list is applicable, the satellite identifier list comprises at least one first identifier, and the first identifier is used for indicating a satellite. The embodiments of the present disclosure can enable a communication mechanism to adapt to communications after introduction of a satellite access network.

Description

Communication methods, communication equipment, communication systems, storage media and computer program products Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to an information processing method, communication equipment, communication system, storage medium, and computer program product. Background Technology

[0002] In the field of communication technology, satellite communication has been introduced. However, due to the insufficient number of satellites deployed, satellite networks may suffer from problems such as limited coverage, making it impossible to provide continuous coverage services for terminals.

[0003] Summary of the Invention

[0004] With the introduction of satellite communication, the communication mechanism needs to be adjusted.

[0005] According to a first aspect of the present disclosure, a communication method is provided, the method being performed by a first core network device, the method comprising:

[0006] Send the first message to the terminal;

[0007] The first information is used to indicate the area to which the satellite identifier list applies, and the satellite identifier list contains at least one first identifier, which is used to indicate a satellite.

[0008] According to a second aspect of the embodiments of this disclosure, a communication method is provided, the method being executed by a terminal, the method comprising:

[0009] Receive the first information sent by the first core network device;

[0010] The first information is used to indicate the area to which the satellite identifier list applies, and the satellite identifier list contains at least one first identifier, which is used to indicate a satellite.

[0011] According to a third aspect of the embodiments of this disclosure, a communication method is provided, the method comprising:

[0012] The first core network device sends the first information to the terminal;

[0013] The first information is used to indicate the area to which the satellite identifier list applies, and the satellite identifier list contains at least one first identifier, which is used to indicate a satellite.

[0014] According to a fourth aspect of the present disclosure, a communication device is provided for performing the communication methods of the first and / or second aspects.

[0015] According to a fifth aspect of the present disclosure, a communication system is provided, comprising: a first core network device and / or a terminal; wherein the first core network device is configured to implement the communication method described in the first aspect, and the terminal is configured to implement the communication method described in the second aspect.

[0016] According to a sixth aspect of the present disclosure, a storage medium is provided that stores instructions that, when executed on a communication device, cause the communication device to perform a method as described in an optional implementation of the first and / or second aspects.

[0017] According to a seventh aspect of the present disclosure, a computer program product is provided, the computer program product including a computer program or instructions, which, when executed by a processor, implement the method as described in the optional implementations of the first and / or second aspects.

[0018] The embodiments disclosed herein enable the communication mechanism to adapt to communication after the introduction of satellite access networks. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0020] Figure 1A is a schematic diagram of the structure of an information processing system according to an embodiment of the present disclosure.

[0021] Figure 1B is a schematic diagram of a communication architecture according to an embodiment of the present disclosure.

[0022] Figure 1C is a schematic diagram of a communication architecture according to an embodiment of the present disclosure.

[0023] Figure 1D is a schematic diagram illustrating a communication method according to an embodiment of the present disclosure.

[0024] Figure 2 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.

[0025] Figure 3 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.

[0026] Figure 4A is a flowchart illustrating a communication method according to an embodiment of the present disclosure.

[0027] Figure 4B is a flowchart illustrating a communication method according to an embodiment of the present disclosure.

[0028] Figure 5A is a schematic diagram of the structure of a first core network device according to an embodiment of the present disclosure.

[0029] Figure 5B is a schematic diagram of the structure of a terminal according to an embodiment of the present disclosure.

[0030] Figure 6A is a schematic diagram of the structure of a communication device provided according to an embodiment of the present disclosure.

[0031] Figure 6B is a schematic diagram of the structure of a chip provided according to an embodiment of the present disclosure. Detailed Implementation

[0032] This disclosure provides an information processing method, a first core network device, a terminal, a communication device, a communication system, a storage medium, and a computer program product.

[0033] In a first aspect, embodiments of this disclosure provide a communication method, the method being executed by a first core network device, the method comprising:

[0034] Send the first message to the terminal;

[0035] The first information is used to indicate the area to which the satellite identifier list applies, and the satellite identifier list contains at least one first identifier, which is used to indicate a satellite.

[0036] In the above embodiments, since the first core network device sends first information to the terminal to indicate the area to which the satellite identification list applies, the terminal can use the satellite identification list in the area after receiving the first information, thus making the communication mechanism more explicit and reliable.

[0037] In conjunction with some embodiments of the first aspect, in some embodiments, the first information is also used to indicate the satellite identifier list and.

[0038] In the above embodiments, the first information can indicate the satellite identifier list while simultaneously indicating the area to which the satellite identifier list applies.

[0039] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0040] Send the second information to the terminal;

[0041] The second information is used to indicate a second identifier, which in turn indicates a Public Land Mobile Network (PLMN) that uses satellite access, and the satellite is the satellite indicated by the first identifier included in the satellite identifier list.

[0042] In the above embodiments, the second identifier indicated by the second information can indicate the PLMN accessed by the satellite indicated by the first identifier included in the satellite identifier list, thereby clearly determining the PLMN that needs to be accessed through the satellite, making the communication mechanism more explicit and reliable.

[0043] In conjunction with some embodiments of the first aspect, in some embodiments, the area indicated by the first information includes at least one of the following:

[0044] The area consisting of the tracking area (TA);

[0045] The area consisting of the user registration area (RA);

[0046] An area composed of residential communities.

[0047] In the above embodiments, the area can be indicated in a variety of ways, making the implementation more flexible.

[0048] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0049] The region is determined based on third-party information;

[0050] The third information is used to indicate one of the following:

[0051] The signal coverage areas of the satellites in the satellite identifier list;

[0052] The location of the terminal;

[0053] Operator's regional configuration strategy.

[0054] In the above embodiments, the region can be determined based on different information, making the implementation more flexible.

[0055] In conjunction with some embodiments of the first aspect, in some embodiments, the first information and / or the second information are carried in a non-access stratum (NAS) message.

[0056] In the above embodiments, the first information can be sent to the terminal by reusing NAS messages, which can save signaling overhead and improve communication efficiency.

[0057] In conjunction with some embodiments of the first aspect, in some embodiments, the NAS message includes at least one of the following:

[0058] Attach the received message;

[0059] Attach a rejection message;

[0060] The tracking area updates the TAU receiving messages;

[0061] TAU declined to comment.

[0062] Secondly, embodiments of this disclosure provide a communication method, which is executed by a terminal, and the method includes:

[0063] Receive the first information sent by the first core network device;

[0064] The first information is used to indicate the area to which the satellite identifier list applies, and the satellite identifier list contains at least one first identifier, which is used to indicate a satellite.

[0065] In conjunction with some embodiments of the second aspect, in some embodiments, the first information is also used to indicate the list of satellite identifiers.

[0066] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0067] Receive the second information sent by the first core network device;

[0068] The second information is used to indicate a second identifier, which in turn indicates a Public Land Mobile Network (PLMN) that uses satellite access, and the satellite is the satellite indicated by the first identifier included in the satellite identifier list.

[0069] In conjunction with some embodiments of the second aspect, in some embodiments, the area indicated by the first information includes at least one of the following:

[0070] The area consisting of the tracking area (TA);

[0071] The area consisting of the user registration area (RA);

[0072] An area composed of residential communities.

[0073] In conjunction with some embodiments of the second aspect, in some embodiments, the area indicated by the first information is determined based on third information; wherein the third information is used to indicate one of the following:

[0074] The signal coverage areas of the satellites in the satellite identifier list;

[0075] The location of the terminal;

[0076] Operator's regional configuration strategy.

[0077] In conjunction with some embodiments of the second aspect, in some embodiments, the first information and / or the second information are carried in a non-access stratum (NAS) message.

[0078] In conjunction with some embodiments of the second aspect, in some embodiments, the NAS message includes at least one of the following:

[0079] Attach the received message;

[0080] Attach a rejection message;

[0081] The tracking area updates the TAU receiving messages;

[0082] TAU declined to comment.

[0083] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0084] Receive broadcast information sent by the first access network device;

[0085] The first access network device is deployed on a satellite; the broadcast information includes at least one of the following:

[0086] Satellite identifier;

[0087] Community signage;

[0088] TA identifier;

[0089] PLMN logo.

[0090] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes one of the following:

[0091] If the PLMN identifier is different from the second identifier, the PLMN indicated by the PLMN identifier is accessed through the first access network device;

[0092] If the PLMN identifier is the same as the second identifier, perform the first operation;

[0093] Wherein, the PLMN identifier is the identifier of the PLMN that the terminal requests to access, the second identifier is used to indicate the PLMN that has already used satellite access, and the satellite is the satellite indicated by the first identifier included in the satellite identifier list.

[0094] In conjunction with some embodiments of the second aspect, in some embodiments, performing the first operation includes:

[0095] If the satellite identifier is included in the satellite identifier list, access is granted to the first access network device;

[0096] If the satellite identifier is not included in the satellite identifier list, and the area indicated by any of the cell identifiers and / or any of the TA identifiers is included in the area indicated by the first information, the first access network device shall not be connected.

[0097] Access to the first access network device occurs when the satellite identifier is not included in the satellite identifier list, and the areas indicated by all the cell identifiers and / or all the TA identifiers are not included in the area indicated by the first information.

[0098] If the satellite identifier is not included in the satellite identifier list, and any of the cell identifiers and / or any of the TA identifiers are included in the first information, the first access network device will not be connected.

[0099] If the satellite identifier is not included in the satellite identifier list, and all of the cell identifiers and / or all of the TA identifiers are not included in the first information, the first access network device is accessed.

[0100] Thirdly, this disclosure provides a communication method, the method comprising: a first core network device sending first information to a terminal;

[0101] The first information is used to indicate the area to which the satellite identifier list applies, and the satellite identifier list contains at least one first identifier, which is used to indicate a satellite.

[0102] Fourthly, embodiments of this disclosure provide a first core network device, including: a transceiver module configured to send first information to a terminal;

[0103] The first information is used to indicate the area to which the satellite identifier list applies, and the satellite identifier list contains at least one first identifier, which is used to indicate a satellite.

[0104] Fifthly, embodiments of this disclosure provide a terminal, including: a transceiver module configured to receive first information sent by a first core network device;

[0105] The first information is used to indicate the area to which the satellite identifier list applies, and the satellite identifier list contains at least one first identifier, which is used to indicate a satellite.

[0106] In a sixth aspect, embodiments of this disclosure provide a communication device including one or more processors; wherein the communication device is used to perform embodiments or alternative implementations as described in the first and / or second aspects.

[0107] In a seventh aspect, embodiments of this disclosure provide a communication device for performing an implementation of, as described in the first aspect, the second aspect, or an optional implementation of the first and second aspects.

[0108] Eighthly, embodiments of this disclosure provide a communication system, including: a first core network device and a terminal; wherein the first core network device is configured to perform the method described in the optional implementation of the first aspect, and the terminal is configured to perform the method described in the optional implementation of the second aspect.

[0109] Ninthly, embodiments of this disclosure provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the method described in the first aspect, the second aspect, or an optional implementation of the first aspect or the second aspect.

[0110] In a tenth aspect, embodiments of this disclosure provide a computer program product, which includes a computer program or instructions that, when executed by a processor, implement the method as described in the first aspect, the second aspect, or an optional implementation of the first and second aspects.

[0111] In one aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the methods described as in the first aspect, the second aspect, or alternative implementations of the first and second aspects.

[0112] In a twelfth aspect, embodiments of this disclosure provide a chip or chip system including processing circuitry configured to perform the methods described according to the first aspect, the second aspect, or alternative implementations of the first and second aspects.

[0113] It is understood that the aforementioned core network equipment, terminals, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to execute the methods provided in the embodiments of this disclosure. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0114] This disclosure provides a communication method, core network equipment, terminal, communication system, and storage medium. In some embodiments, terms such as communication method and information processing method are interchangeable, as are terms such as information processing device and communication device, and terms such as information processing system and communication system.

[0115] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0116] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be used interchangeably. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0117] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0118] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0119] In the embodiments disclosed herein, "multiple" refers to two or more.

[0120] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0121] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, both A and B are executed. The same applies when there are more branches such as A, B, C, etc.

[0122] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

[0123] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0124] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0125] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.

[0126] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0127] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0128] In some embodiments, devices, etc., can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as “device”, “equipment”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.

[0129] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0130] In some embodiments, the terms "access network device (AN device)," "radio access network device (RAN device)," "base station (BS)," "radio base station," "fixed station," "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "carrier," "component carrier," and "bandwidth part (BWP)" can be used interchangeably.

[0131] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", "subscriber station", "mobile unit", "subscriber unit", "wireless unit", "remote unit", "mobile device", "wireless device", "wireless communication device", "remote device", "mobile subscriber station", "access terminal", "mobile terminal", "wireless terminal", "remote terminal", "handset", "user agent", "mobile client", and "client" can be used interchangeably.

[0132] In some embodiments, access network devices, core network devices, or network devices can be replaced by terminals. For example, embodiments of this disclosure can also be applied to structures that replace communication between access network devices, core network devices, or network devices and terminals with communication between multiple terminals (e.g., also referred to as device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the structure can also be configured such that the terminal has all or part of the functions of the access network device. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, uplink link, downlink link, etc., can be replaced with sidelink link.

[0133] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, core network device, or network device may also be configured to have all or some of the functions of the terminal.

[0134] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0135] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0136] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0137] Figure 1A is a schematic diagram of the structure of an information processing system 100 according to an embodiment of the present disclosure.

[0138] As shown in Figure 1A, the information processing system 100 may include: terminal 101 and network device 102.

[0139] In some embodiments, network device 102 may include at least one of an access network device and a core network device.

[0140] In some embodiments, terminal 101 includes, for example, at least one of the following: mobile phone, wearable device, Internet of Things (IoT) device or terminal, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home, but is not limited thereto.

[0141] In some embodiments, the access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include, but is not limited to, at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), radio backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a wireless fidelity (WiFi) system.

[0142] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0143] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0144] In some embodiments, the core network equipment may be a single device, a first network element, or a second network element, or multiple devices or a group of devices, respectively including all or part of the aforementioned first network element and / or second network element. Both the first network element and / or the second network element may be virtual or physical. The core network may include, for example, at least one of the following: Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), and 6G Core Network (6GCN).

[0145] In some embodiments, the first network element may be any function, network element, or entity in the core network that can be used for registration, connection, and / or mobility management.

[0146] In some embodiments, the name of the first network element is not limited, and it may be, for example, one of the access and mobility management function, session management function, and policy control function.

[0147] In some embodiments, the second network element may be any function, network element, or entity in the core network that can implement the control plane and / or user plane.

[0148] In some embodiments, the name of the second network element is not limited, and it may be, for example, one of the Packet Data Unit Session Connection Anchored User Plane Function and the Intermediate User Plane Function.

[0149] It is understood that the information processing system described in the embodiments of this disclosure is for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and does not constitute a limitation on the technical solutions provided in the embodiments of this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this disclosure are also applicable to similar technical problems.

[0150] The following embodiments of this disclosure can be applied to the information processing system 100 shown in FIG1A, or some of its components, but are not limited thereto. The components shown in FIG1A are illustrative. The information processing system may include all or some of the components in FIG1A, or may include other components outside of FIG1A. The number and form of each component are arbitrary. The connection relationship between the components is illustrative. The components may be unconnected or connected. The connection can be in any way, either direct or indirect, wired or wireless.

[0151] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), 5G New Radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New Radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., LTE or LTE-A combined with 5G, 5G combined with 5G, 5G combined with 6G, etc.) for application.

[0152] In some embodiments, please refer to Figures 1B and 1C, which are schematic diagrams of network deployment based on satellite-borne functions. Figure 1B shows the architecture in which some Mobility Management Entity (MME) functions are deployed on a satellite; Figure 1C shows the architecture in which the core network is deployed on a satellite.

[0153] In some embodiments, satellite networks may be unable to provide continuous coverage services due to insufficient satellite deployment and limited coverage. This discontinuous coverage includes interruptions in the connection between the satellite and the UE (service link) or the connection between the satellite and the ground receiving station (feeder link), meaning that the service link and the feeder link cannot exist simultaneously. In this case, to enable certain services (e.g., latency-tolerant services), the network functions on the satellite need to perform data and / or signaling storage and forwarding functions. For example, for Figure 1B, the onboard MME needs to perform data storage and forwarding functions, and for Figure 1C, the core network functions or servers deployed on the satellite need to perform data storage and forwarding functions.

[0154] In some embodiments, referring to Figure 1D, in the "Save and Forward (S&F) Satellite Operation" mode, the end-to-end exchange of signaling or data services is now divided into a combination of two steps processed at different times (steps A and B in Figure 1D). In step A, signaling / data exchange between the UE and the satellite is initiated, while the satellite is unable to connect to the terrestrial network at this time (i.e., the satellite can use the service link without a feeder link connection). In step B, a connection is established between the satellite and the terrestrial network, enabling communication between them, but the service link between the UE and the satellite is unavailable at this time. Therefore, the satellite needs to perform store and forward operations for data or signaling during the process of moving from connecting to the UE in step A to connecting to the terrestrial network in step B.

[0155] In some embodiments, satellite support for S&F operations is particularly well-suited for latency-tolerant or non-real-time IoT services provided by non-Geostationary Satellite Orbit (NGSO) satellite networks.

[0156] In some embodiments, if the satellite is operating in S&F mode, when the UE initiates an Attach or Tracking Area Update (TAU) procedure, the MME can provide the UE with an S&F wait timer and a list of satellite IDs during the acceptance or rejection of the attach or TAU procedure. The wait timer indicates to the UE the time to wait between accessing the same Public Land Mobile Network (PLMN) using one satellite from the list of satellite IDs. The list of satellite IDs indicates the next satellite the UE can access after the wait timer expires.

[0157] In some embodiments, the list of satellite IDs sent to the UE only indicates satellites that can serve the UE at its current location. If the UE moves to a new area covered by another satellite not present in the provided list, the satellite list may be invalid for the new area. In this case, even if satellite coverage (not in the list) is available, the UE may not initiate a Non-Access Stratum (NAS) procedure to the satellite.

[0158] Figure 2 is an interactive schematic diagram illustrating an information processing method according to an embodiment of the present disclosure. As shown in Figure 2, the present disclosure relates to an information processing method used in an information processing system 100, the method comprising:

[0159] Step S2101: The first core network device sends the first information to the terminal.

[0160] In some embodiments, the terminal receives first information sent by the first core network device.

[0161] In some embodiments, the first information is used to indicate the area to which the satellite identifier list applies.

[0162] In some embodiments, the satellite identifier list includes at least one first identifier.

[0163] In some embodiments, the first identifier is used to indicate a satellite.

[0164] It should be noted that the satellite identifier list applies to a specific area, meaning that when a terminal moves to that area, the satellite identifier list can be used to perform the corresponding processing. Here, the corresponding processing could be accessing the satellite network indicated by the first identifier in the satellite identifier list.

[0165] In some embodiments, the region may be a geographical region.

[0166] In some embodiments, the first core network device may send the satellite identifier list and the area to which the satellite identifier list applies to the terminal via a message.

[0167] In some embodiments, the first information is used to indicate the satellite identifier list and the area to which the satellite identifier list applies.

[0168] In some embodiments, the first core network device may send the satellite identifier list and the area to which the satellite identifier list applies to the terminal through different information.

[0169] In some embodiments, the first information is used to indicate the area to which the satellite identifier list indicated by the Nth information applies, and the Nth information is used to indicate the satellite identifier list.

[0170] For example, the satellite identifier list includes a first satellite identifier list and a second satellite identifier list. The first satellite identifier list applies to area A, and the second satellite identifier list applies to area B. Then, the first information can indicate the first satellite identifier list and area A, and / or, the first information can indicate the second satellite identifier list and area B.

[0171] For example, the satellite identifier list includes a first satellite identifier list and a second satellite identifier list. The first satellite identifier list applies to area A, and the second satellite identifier list applies to area B. The Nth information can indicate the first satellite identifier list, and the first information can indicate area A.

[0172] In some embodiments, the first core network device sends a NAS message to the terminal.

[0173] In some embodiments, the Non-Access Stratum (NAS) message includes the first information.

[0174] In some embodiments, the NAS message includes at least one of the following:

[0175] Attach the received message;

[0176] Attach a rejection message;

[0177] Tracking Area Update (TAU) receives messages;

[0178] TAU declined to comment.

[0179] In some embodiments, the area indicated by the first information includes at least one of the following:

[0180] The area consisting of the Tracking Area (TA);

[0181] The area consisting of the Registration Area (RA);

[0182] An area composed of residential communities.

[0183] For example, the area indicated by the first information is the area composed of TA1 and TA2.

[0184] For example, the area indicated by the first information is the RA area.

[0185] For example, the area indicated by the first information is the area composed of cell 1 and cell 2.

[0186] In some embodiments, the region is determined based on third information.

[0187] In some embodiments, the third information is used to indicate one of the following:

[0188] The signal coverage areas of the satellites in the satellite identifier list;

[0189] The location of the terminal;

[0190] Operator's regional configuration strategy.

[0191] In some embodiments, the region is determined based on the signal coverage areas of satellites in the satellite identifier list.

[0192] In some embodiments, the region is determined based on the location of the terminal.

[0193] In some embodiments, the region is determined based on the operator's regional configuration policy.

[0194] In some embodiments, the region determined based on third information may be at least one of the following:

[0195] The area consisting of the tracking area (TA);

[0196] The area consisting of the user registration area (RA);

[0197] An area composed of residential communities.

[0198] It should be noted that the above-mentioned areas can be indicated by signs, such as TA signs, RA signs, and / or cell signs.

[0199] In some embodiments, the first core network device may be an MME.

[0200] In some embodiments, both the terminal and the first core network device support S&F mode.

[0201] In some embodiments, when both the terminal and the first core network device support S&F mode, the first core network device sends first information to the terminal.

[0202] In some embodiments, after receiving the first information, the terminal will save the satellite identifier list and / or the information of the region corresponding to the satellite identifier list.

[0203] In step S2102, the first core network device sends the second information to the terminal.

[0204] In some embodiments, the terminal receives second information sent by the first core network device.

[0205] In some embodiments, the second information is used to indicate a second identifier, which indicates a Public Land Mobile Network (PLMN) using satellite access, wherein the satellite is a satellite indicated by a first identifier included in the list of satellite identifiers.

[0206] It should be noted that the first and second messages can be sent through the same message, and this is not a limitation here.

[0207] In some embodiments, the first core network device sends a NAS message to the terminal.

[0208] In some embodiments, the Non-Access Stratum (NAS) message includes the second information.

[0209] In some embodiments, the NAS message includes at least one of the following:

[0210] Attach the received message;

[0211] Attach a rejection message;

[0212] Tracking Area Update (TAU) receives messages;

[0213] TAU declined to comment.

[0214] In some embodiments, the terminal saves the second identifier after receiving the second information.

[0215] In step S2103, the first access network device sends a broadcast message to the terminal.

[0216] In some embodiments, the terminal receives a broadcast message sent by the first access network device.

[0217] In some embodiments, the first access network device is deployed on a satellite.

[0218] In some embodiments, the broadcast information includes at least one of the following:

[0219] Satellite identifier;

[0220] Community signage;

[0221] TA identifier;

[0222] PLMN logo.

[0223] In some embodiments, the broadcast message may be a system message, such as SIB1.

[0224] Step S2104: The terminal performs the operation.

[0225] In some embodiments, the operation is an operation associated with accessing the PLMN and / or the first access network device.

[0226] In some embodiments, if the PLMN identifier is different from the second identifier, the PLMN indicated by the PLMN identifier is accessed through the first access network device.

[0227] In some embodiments, if the PLMN identifier is the same as the second identifier, the first operation is performed.

[0228] In some embodiments, the PLMN identifier is the identifier of the PLMN to which the terminal requests access.

[0229] In some embodiments, the second identifier is used to indicate a PLMN that has already used satellite access, wherein the satellite is a satellite indicated by a first identifier included in the satellite identifier list.

[0230] In some embodiments, the first access network device is accessed when the satellite identifier is included in the satellite identifier list.

[0231] In some embodiments, if the satellite identifier is not included in the satellite identifier list, and the area indicated by any of the cell identifiers and / or any of the TA identifiers is included in the area indicated by the first information, the first access network device is not accessed;

[0232] In some embodiments, the first access network device is accessed when the satellite identifier is not included in the satellite identifier list and the areas indicated by all the cell identifiers and / or all the TA identifiers are not included in the area indicated by the first information.

[0233] In some embodiments, if the satellite identifier is not included in the satellite identifier list, and any of the cell identifiers and / or any of the TA identifiers are included in the first information, the first access network device is not accessed, wherein the first information indicates the region through identifiers.

[0234] In some embodiments, the first access network device is accessed when the satellite identifier is not included in the satellite identifier list and all the cell identifiers and / or all the TA identifiers are not included in the first information, wherein the first information indicates the region through identifiers.

[0235] It should be noted that the identifiers included in the first information can be satellite identifiers, cell identifiers, TA identifiers, PLMN identifiers, etc., and are not limited here.

[0236] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0237] In some embodiments, the terms “radio”, “wireless”, “radio access network (RAN)”, “access network (AN)”, and “RAN-based” can be used interchangeably.

[0238] In some embodiments, “get,” “obtain,” “receive,” “transmit,” “bidirectional transmission,” and “send and / or receive” can be used interchangeably and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining through self-processing, or autonomous implementation, among other meanings.

[0239] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transfer,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0240] In some embodiments, terms such as “moment,” “point in time,” “time,” and “time location” can be used interchangeably, as can terms such as “duration,” “segment,” “time window,” “window,” and “time.”

[0241] In some embodiments, terms such as "certain", "preset", "default", "set", "indicated", "a certain", "any", and "first" can be used interchangeably. "Certain A", "preset A", "default A", "set A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

[0242] The information processing method involved in the embodiments of this disclosure may include at least one of steps S2101 to S2104. For example, step S2101 may be implemented as an independent embodiment; step S2102 may be implemented as an independent embodiment; step S2103 may be implemented as an independent embodiment; step S2104 may be implemented as an independent embodiment; a combination of steps S2101 and S2104 may be implemented as an independent embodiment; a combination of steps S2101 and S2103 and S2104 may be implemented as an independent embodiment; a combination of steps S2101 and S2102 and steps S2103 and S2104 may be implemented as an independent embodiment.

[0243] In some embodiments, step S2102 may be optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0244] In some embodiments, step S2103 may be optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0245] In some embodiments, steps S2102 and S2103 may be optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0246] In the embodiments disclosed herein, each embodiment can be implemented individually or in combination with each other, and the steps in each embodiment can be distinguished by their order.

[0247] Figure 3 is an interactive schematic diagram illustrating an information processing method according to an embodiment of the present disclosure. As shown in Figure 3, the present disclosure relates to an information processing method, which includes:

[0248] Step S3101: The first core network device sends the first information to the terminal.

[0249] In some embodiments, the first information is used to indicate the area to which the satellite identifier list applies, the satellite identifier list containing at least one first identifier, the first identifier being used to indicate a satellite.

[0250] The optional implementations of step S3101 can be found in the optional implementations of step S2101 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0251] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0252] A communication method according to an embodiment of this disclosure includes:

[0253] Step S3201: The first core network device sends the first information to the terminal;

[0254] The first information is used to indicate the area to which the satellite identifier list applies, and the satellite identifier list contains at least one first identifier, which is used to indicate a satellite.

[0255] The optional implementations of step S3201 can be found in the optional implementations of step S2101 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0256] In some embodiments, the first information is used to indicate the list of satellite identifiers.

[0257] In some embodiments, the method further includes:

[0258] Send the second information to the terminal;

[0259] The second information is used to indicate a second identifier, which in turn indicates a Public Land Mobile Network (PLMN) that uses satellite access, and the satellite is the satellite indicated by the first identifier included in the satellite identifier list.

[0260] In some embodiments, the area indicated by the first information includes at least one of the following:

[0261] The area consisting of the tracking area (TA);

[0262] The area consisting of the user registration area (RA);

[0263] An area composed of residential communities.

[0264] In some embodiments, the method further includes:

[0265] The region is determined based on third-party information;

[0266] The third information is used to indicate one of the following:

[0267] The signal coverage areas of the satellites in the satellite identifier list;

[0268] The location of the terminal;

[0269] Operator's regional configuration strategy.

[0270] In some embodiments, the first information and / or the second information are carried in the NAS message.

[0271] In some embodiments, the NAS message includes at least one of the following:

[0272] Attach the received message;

[0273] Attach a rejection message;

[0274] The tracking area updates the TAU receiving messages;

[0275] TAU declined to comment.

[0276] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0277] An information processing method according to an embodiment of this disclosure includes:

[0278] Step S3301: The terminal receives the first information sent by the first core network device.

[0279] In some embodiments, the first information is used to indicate the area to which the satellite identifier list applies, the satellite identifier list containing at least one first identifier, the first identifier being used to indicate a satellite.

[0280] The optional implementation of step S3301 can be found in the optional implementation of step S2101 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0281] In some embodiments, the first information is also used to indicate the list of satellite identifiers.

[0282] In some embodiments, the method further includes:

[0283] Receive the second information sent by the first core network device;

[0284] The second information is used to indicate a second identifier, which in turn indicates a Public Land Mobile Network (PLMN) that uses satellite access, and the satellite is the satellite indicated by the first identifier included in the satellite identifier list.

[0285] In some embodiments, the area indicated by the first information includes at least one of the following:

[0286] The area consisting of the tracking area (TA);

[0287] The area consisting of the user registration area (RA);

[0288] An area composed of residential communities.

[0289] In some embodiments, the area indicated by the first information is determined based on third information; wherein the third information is used to indicate one of the following:

[0290] The signal coverage areas of the satellites in the satellite identifier list;

[0291] The location of the terminal;

[0292] Operator's regional configuration strategy.

[0293] In some embodiments, the first information and / or the second information are carried in the NAS message.

[0294] In some embodiments, the NAS message includes at least one of the following:

[0295] Attach the received message;

[0296] Attach a rejection message;

[0297] The tracking area updates the TAU receiving messages;

[0298] TAU declined to comment.

[0299] In some embodiments, the method further includes:

[0300] Receive broadcast information sent by the first access network device;

[0301] The first access network device is deployed on a satellite; the broadcast information includes at least one of the following:

[0302] Satellite identifier;

[0303] Community signage;

[0304] TA identifier;

[0305] PLMN logo.

[0306] In some embodiments, the method further includes one of the following:

[0307] If the PLMN identifier is different from the second identifier, the PLMN indicated by the PLMN identifier is accessed through the first access network device;

[0308] If the PLMN identifier is the same as the second identifier, perform the first operation;

[0309] Wherein, the PLMN identifier is the identifier of the PLMN that the terminal requests to access, the second identifier is used to indicate the PLMN that has already used satellite access, and the satellite is the satellite indicated by the first identifier included in the satellite identifier list.

[0310] In some embodiments, performing the first operation includes:

[0311] If the satellite identifier is included in the satellite identifier list, access is granted to the first access network device;

[0312] If the satellite identifier is not included in the satellite identifier list, and the area indicated by any of the cell identifiers and / or any of the TA identifiers is included in the area indicated by the first information, the first access network device shall not be connected.

[0313] Access to the first access network device occurs when the satellite identifier is not included in the satellite identifier list, and the areas indicated by all the cell identifiers and / or all the TA identifiers are not included in the area indicated by the first information.

[0314] If the satellite identifier is not included in the satellite identifier list, and any of the cell identifiers and / or any of the TA identifiers are included in the first information, the first access network device will not be connected.

[0315] If the satellite identifier is not included in the satellite identifier list, and all of the cell identifiers and / or all of the TA identifiers are not included in the first information, the first access network device is accessed.

[0316] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0317] This disclosure relates to a communication method, which may include:

[0318] In some embodiments, when the MME sends a list of satellite identifiers to the UE, it also provides first information, which is area information indicating the area to which the list of satellite identifiers applies.

[0319] In some embodiments, the MME also provides the UE with second information, which is a PLMN identifier, indicating a PLMN that uses satellite access from the list of satellite identifiers.

[0320] In some embodiments, the region information is at least one of the following:

[0321] A region consisting of a set of TAs;

[0322] User Registration Area (RA);

[0323] An area composed of residential communities.

[0324] In some embodiments, the region information is determined by the MME based on at least one of the following:

[0325] The satellite coverage areas in the satellite identifier list;

[0326] The current location of the UE;

[0327] Operator's regional configuration strategy.

[0328] In some embodiments, the MME sends the first information and the satellite identifier list to the UE via a NAS message.

[0329] In some embodiments, the NAS message includes one of the following: attach accept message, attach reject message, tracking area update accept message, and tracking area update reject message.

[0330] In some embodiments, the UE stores the satellite identifier list and the first information.

[0331] In some embodiments, the UE also stores the second information.

[0332] In some embodiments, the UE receives broadcast information from a satellite base station, the broadcast information including the satellite identifier, the broadcast cell identifier, and the broadcast TA.

[0333] In some embodiments, determining whether to access the satellite base station based on the satellite identifier list, the first information, and the second information includes:

[0334] If the PLMN ID requested by the UE is different from the PLMN ID indicated by the second information, the UE is allowed to access the PLMN through the satellite ID, regardless of whether the requested satellite ID is included in the satellite ID list.

[0335] In some embodiments, for a UE requesting access to the PLMN indicated by the second information:

[0336] If the satellite identifier is included in the satellite identifier list, access the satellite base station;

[0337] If the satellite identifier is not included in the satellite identifier list, and at least one of the broadcast cell identifier or broadcast TA identifier is included in the first information, the satellite base station will not be accessed.

[0338] If the satellite identifier is not included in the satellite identifier list, and all broadcast cell identifiers or all broadcast TA identifiers are not included in the first information, then access the satellite base station.

[0339] Example 1

[0340] As shown in Figure 4A, in this scenario, the MME is divided into two parts: onboard MME functionality and ground-based MME functionality. Multiple onboard MMEs and ground-based MMEs located on different satellites together constitute a complete MME function. Onboard MMEs and eNBs can be deployed on the same satellite.

[0341] Please refer again to Figure 4A, which provides a communication method including the following steps:

[0342] Step S4101: Send an attach request message.

[0343] In some embodiments, at time T0, the eNB-1 carrying the satellite provides coverage to the UE, the UE sends an attach request (i.e., an attach request message) to the eNB-1, and further sends an attach request to the MME-1 carrying the satellite to access the PLMN.

[0344] In some embodiments, if eNB-1 receives a request message, it sends the request message along with the list of satellite IDs broadcast by eNB-1 to the onboard MME-1.

[0345] Step S4102: Send an attach rejection message.

[0346] In some embodiments, when an attach request is received, MME-1 detects that the feeder link of the ground MME is unavailable, and the onboard MME stores the attach request and related information as a UE context.

[0347] In some embodiments, the onboard MME sends an attach rejection message to the UE, indicating that the attach was unsuccessful due to S&F satellite operation.

[0348] In some embodiments, the MME also provides a list of satellite IDs, which indicates the satellites that the UE may access in the future to retry the attach process.

[0349] In some embodiments, the MME also determines area information (e.g., TAIs) and provides it to the UE (corresponding to the first information).

[0350] In some embodiments, area information is used to indicate that the satellite ID list is valid in that area. This means that if the UE is located outside that area, the UE can access satellites that are not in the satellite ID list.

[0351] In some embodiments, the MME may provide the PLMN ID to the UE.

[0352] Step S4103: Store the satellite ID list and area information.

[0353] In some embodiments, the UE stores a list of satellite IDs and area information.

[0354] Step S4104: Perform terminal context synchronization.

[0355] In some embodiments, when the onboard MME-1 detects that the feeder link has become available, UE context synchronization is performed between the onboard MME-1 and the ground MME. Additionally, a list of satellite IDs as described in step S4102 is also provided to the ground MME.

[0356] Step S4105: Store the UE context and satellite ID list.

[0357] In some embodiments, the ground MME stores the UE context and a list of satellite IDs.

[0358] Step S4106, the terminal moves.

[0359] In some embodiments, at time T1, the UE is moving to a new area.

[0360] Step S4107: Send a broadcast message.

[0361] In some embodiments, in this area, an eNB2 carrying a satellite provides coverage and broadcasts the satellite ID and TAIs of the eNB2.

[0362] Step S4108a: Determine that there is no satellite ID in the list and no TAI in the area information.

[0363] In some embodiments, when the UE receives an SIB message in the area, based on the satellite ID list and area information stored in the UE, if the satellite ID broadcast by the eNB2 is not in the satellite ID list and each broadcast TAI is not in the area information (TAI list), the UE can access the PLMN via the eNB2.

[0364] Step S4108b: Determine that the satellite ID is not in the satellite ID list and that at least one of the broadcast TAIs is in the area information.

[0365] In some embodiments, when the UE receives an SIB message in the area, based on the satellite ID list and area information stored in the UE, if the satellite ID broadcast by eNB2 is not in the satellite ID list and at least one of the broadcast TAIs is in the area information (TAI list), the UE will not resend the attach request to the PLMN via eNB2.

[0366] Step S4109: Send an attach request message.

[0367] In some embodiments, the UE retransmits the attach request (i.e., the attach request message) to the onboard MME-2 via the onboard eNB-2.

[0368] Step S4110: Send an attach accept message.

[0369] In some embodiments, the MME-2 accepts attach requests. The onboard MME-2 sends an attach accept message (i.e., attach accept message) to the UE. The onboard MME-2 may send an updated list of satellite IDs and area information to the UE. The UE may update its stored list of satellite IDs and area information.

[0370] Step S4111: Perform terminal context synchronization.

[0371] Example 2:

[0372] As shown in Figure 4B, a communication method is provided, including the following steps:

[0373] Step S4201: Send an attach request message.

[0374] In some embodiments, at time T0, the eNB-1 carrying the satellite provides coverage to the UE, the UE sends an attach request (i.e., an attach request message) to the eNB-1, and further sends an attach request to the MME-1 carrying the satellite to access the PLMN.

[0375] In some embodiments, if eNB-1 receives a request message, it sends the request message along with the list of satellite IDs broadcast by eNB-1 to the onboard MME-1.

[0376] Step S4202: Send an attach rejection message.

[0377] In some embodiments, when an attach request is received, MME-1 detects that the feeder link of the ground MME is unavailable, and the onboard MME stores the attach request and related information as a UE context.

[0378] In some embodiments, the onboard MME sends an attach rejection message to the UE, indicating that the attach failed due to S&F satellite operation. The MME also provides a list of satellite IDs, indicating which satellites the UE can access in the future to retry the attach process.

[0379] In some embodiments, the MME also determines area information (e.g., TAIs) and provides it to the UE. The area information indicates that the satellite ID list is valid in that area. This means that if the UE is outside that area, the UE can access satellites that are not in the satellite ID list.

[0380] In some embodiments, the MME may provide the PLMN ID to the UE.

[0381] Step S4203: Store the satellite ID list, area information, and PLMN ID.

[0382] In some embodiments, the UE stores a list of satellite IDs, area information, and PLMN ID.

[0383] Step S4204: Perform terminal context synchronization.

[0384] In some embodiments, when the onboard MME-1 detects that the feeder link becomes available, UE context synchronization is performed between the onboard MME-1 and the ground MME. The satellite ID list and area information, as described in step S4204, are also provided to the ground MME.

[0385] Step S4205: Store the UE context including a list of satellite IDs and area information.

[0386] In some embodiments, the terrestrial MME stores a UE context that includes a list of satellite IDs and area information.

[0387] Step S4206, the terminal moves.

[0388] In some embodiments, at time T1, the UE is moving to a new area.

[0389] Step S4207: Send a broadcast message.

[0390] In some embodiments, the broadcast message is an SIB message.

[0391] In some embodiments, in this area, an eNB2 carrying a satellite provides coverage and broadcasts the satellite ID and TAIs of the eNB2.

[0392] Step S4208: Determine if the satellite ID is in the list.

[0393] In some embodiments, when a UE receives an SIB message in the area, based on the satellite ID list and area information stored in the UE, and the satellite ID broadcast by the eNB2 is in the satellite ID list, the UE can access the PLMN through the eNB2.

[0394] Step S4209: Send an attach request.

[0395] In some embodiments, the UE retransmits the attach request (i.e., the attach request message) to the onboard MME-2 via the onboard eNB-2. The eNB-2 also sends the satellite ID and broadcast TAIs to the onboard MME-2.

[0396] Step S4210: Perform terminal context synchronization.

[0397] In some embodiments, if the feeder link becomes available, the ground MME will synchronize the UE context, including the satellite ID list and area information, to the onboard MME-2.

[0398] Step S4211: Check whether the UE is allowed to access via eNB2.

[0399] In some embodiments, based on the stored list of satellite IDs and area information, the onboard MME-2 checks whether the UE is allowed to access via the eNB2. If the satellite ID received in step S4209 is included in the list of satellite IDs, then the UE is allowed to access via the eNB2.

[0400] Step S4212: Send an attach accept message.

[0401] In some embodiments, the MME-2 accepts attach requests. The onboard MME-2 sends an attach accept message (i.e., attach accept message) to the UE. The onboard MME-2 may send an updated list of satellite IDs and area information to the UE.

[0402] In some embodiments, the UE can update the stored list of satellite IDs and area information.

[0403] In this embodiment of the disclosure, some or all of the steps and their optional implementations can be arbitrarily combined with some or all of the steps in other embodiments, or arbitrarily combined with the optional implementations in other embodiments.

[0404] This disclosure also proposes an apparatus (also referred to as a communication device, etc.) for implementing any of the above methods. For example, an apparatus is proposed, which includes units or modules for implementing the steps performed by the terminal in any of the above methods. Another apparatus is also proposed, including units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods. Here, the core network device may include, but is not limited to, at least one of the following: a first network element and a second network element, etc.

[0405] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an Application-Specific Integrated Circuit (ASIC), and the functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a Programmable Logic Device (PLD), such as a Field Programmable Gate Array (FPGA), which can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0406] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a Digital Signal Processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an Application-Specific Integrated Circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be hardware circuits designed for artificial intelligence, which can be understood as ASICs, such as Neural Network Processing Units (NPUs), Tensor Processing Units (TPUs), and Deep Learning Processing Units (DPUs).

[0407] Figure 5A is a schematic diagram of the structure of a first core network device 5100 provided in an embodiment of this disclosure. As shown in Figure 5A, the first core network device 5100 includes a first transceiver module 5101. In some embodiments, the first transceiver module 5101 is used to send first information and / or send second information, etc. Optionally, the first transceiver module 5101 is used to perform at least one of the sending and / or receiving steps performed by the first core network device 5100 in any of the above methods, which will not be elaborated here. In some embodiments, the first core network device 5100 may include a first processing module.

[0408] Figure 5B is a schematic diagram of the structure of a terminal 5200 provided in an embodiment of this disclosure. As shown in Figure 5B, the terminal 5200 includes a second transceiver module 5201. Optionally, the second transceiver module 5201 is used to perform at least one of the sending and / or receiving steps performed by the terminal 5200 in any of the above methods, which will not be described in detail here. In some embodiments, the terminal 5200 may include a second processing module.

[0409] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver. For example, the first transceiver module described above includes a first transmitting module and / or a first receiving module. For example, the second transceiver module described above includes a second transmitting module and / or a second receiving module.

[0410] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module. Optionally, the processing module may be interchangeable with a processor.

[0411] Figure 6A is a schematic diagram of the structure of the communication device 6100 proposed in an embodiment of this disclosure. The communication device 6100 can be a network device (e.g., access network device, core network device, etc.), a terminal, a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 6100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0412] As shown in Figure 6A, the communication device 6100 includes one or more processors 6101. The processor 6101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 6100 can be used to execute any of the above methods. Optionally, one or more processors 6101 can be used to invoke instructions to cause the communication device 6100 to execute any of the above methods.

[0413] In some embodiments, the communication device 6100 further includes one or more transceivers 6102. When the communication device 6100 includes one or more transceivers 6102, the transceivers 6102 perform at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps S2101 and / or steps S2102 and / or steps S2103 and / or steps S2105, etc., but not limited thereto), and the processor 6101 performs at least one of other steps (e.g., steps S2104 and / or steps S2106, etc., but not limited thereto). In optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated together. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc., can be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., can be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., can be used interchangeably.

[0414] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data. Optionally, all or part of the memories 6103 may be located outside the communication device 6100. In optional embodiments, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuits 6104 are connected to the memories 6103 and can be used to receive data from the memories 6103 or other devices, and to send data to the memories 6103 or other devices. For example, the interface circuits 6104 can read data stored in the memories 6103 and send that data to the processor 6101.

[0415] The communication device 6100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 6100 described in this disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited by FIG. 6A. The communication device may be a standalone device or a part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0416] Figure 6B is a schematic diagram of the structure of chip 6200 according to an embodiment of this disclosure. For cases where the communication device 6100 can be a chip or a chip system, please refer to the schematic diagram of chip 6200 shown in Figure 6B, but it is not limited thereto.

[0417] Chip 6200 includes one or more processors 6201. Chip 6200 is used to perform any of the methods described above.

[0418] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data. Optionally, all or part of the memories 6203 may be located outside chip 6200. Optionally, interface circuit 6202 is connected to memory 6203, and interface circuit 6202 can be used to receive data from memory 6203 or other devices, and interface circuit 6202 can be used to send data to memory 6203 or other devices. For example, interface circuit 6202 can read data stored in memory 6203 and send the data to processor 6201.

[0419] In some embodiments, the interface circuit 6202 performs at least one of the communication steps such as sending and / or receiving in the above-described method (e.g., steps S2101 and / or S2102 and / or S2103 and / or S2105, but not limited thereto). The interface circuit 6202 performing the communication steps such as sending and / or receiving in the above-described method refers, for example, to the interface circuit 6202 performing data interaction between the processor 6201, the chip 6200, the memory 6203, or the transceiver device. In some embodiments, the processor 6201 performs at least one of other steps (e.g., steps S2104 and / or S2106, but not limited thereto).

[0420] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0421] This disclosure also proposes a storage medium storing instructions that, when executed on the communication device 6100, cause the communication device 6100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0422] This disclosure also proposes a program product, including a program and / or instructions, which, when executed by a communication device, cause the communication device to perform any of the above methods. Optionally, the program product is a computer program product. Optionally, the program product is stored on the storage medium.

[0423] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A communication method, characterized in that, The method is executed by a first core network device, and the method includes: Send the first message to the terminal; The first information is used to indicate the area to which the satellite identifier list applies, and the satellite identifier list contains at least one first identifier, which is used to indicate a satellite.

2. The method according to claim 1, characterized in that, The first information is also used to indicate the list of satellite identifiers.

3. The method according to claim 1 or 2, characterized in that, The method further includes: Send the second information to the terminal; The second information is used to indicate a second identifier, which in turn indicates a Public Land Mobile Network (PLMN) that uses satellite access, and the satellite is the satellite indicated by the first identifier included in the satellite identifier list.

4. The method according to any one of claims 1 to 3, characterized in that, The area indicated by the first information includes at least one of the following: The area consisting of the tracking area (TA); The area consisting of the user registration area (RA); An area composed of residential communities.

5. The method according to any one of claims 1 to 4, characterized in that, The method further includes: The region is determined based on third-party information; The third information is used to indicate one of the following: The signal coverage areas of the satellites in the satellite identifier list; The location of the terminal; Operator's regional configuration strategy.

6. The method according to any one of claims 1 to 5, characterized in that, The first information and / or the second information are carried in the non-access stratum (NAS) message.

7. The method according to claim 6, characterized in that, The NAS message includes at least one of the following: Attach the received message; Attach a rejection message; The tracking area updates the TAU receiving messages; TAU declined to comment.

8. A communication method, characterized in that, The method is executed by a terminal, and the method includes: Receive the first information sent by the first core network device; The first information is used to indicate the area to which the satellite identifier list applies, and the satellite identifier list contains at least one first identifier, which is used to indicate a satellite.

9. The method according to claim 8, characterized in that, The first information is also used to indicate the list of satellite identifiers.

10. The method according to claim 8 or 9, characterized in that, The method further includes: Receive the second information sent by the first core network device; The second information is used to indicate a second identifier, which in turn indicates a Public Land Mobile Network (PLMN) that uses satellite access, and the satellite is the satellite indicated by the first identifier included in the satellite identifier list.

11. The method according to any one of claims 8 to 10, characterized in that, The area indicated by the first information includes at least one of the following: The area consisting of the tracking area (TA); The area consisting of the user registration area (RA); An area composed of residential communities.

12. The method according to any one of claims 8 to 11, characterized in that, The area indicated by the first information is determined based on the third information; wherein the third information is used to indicate one of the following: The signal coverage areas of the satellites in the satellite identifier list; The location of the terminal; Operator's regional configuration strategy.

13. The method according to any one of claims 8 to 12, characterized in that, The first information and / or the second information are carried in the non-access stratum (NAS) message.

14. The method according to claim 13, characterized in that, The NAS message includes at least one of the following: Attach the received message; Attach a rejection message; The tracking area updates the TAU receiving messages; TAU declined to comment.

15. The method according to any one of claims 1 to 14, characterized in that, The method further includes: Receive broadcast information sent by the first access network device; The first access network device is deployed on a satellite; the broadcast information includes at least one of the following: Satellite identifier; Community signage; TA identifier; PLMN logo.

16. The method according to claim 15, characterized in that, The method also includes one of the following: If the PLMN identifier is different from the second identifier, the PLMN indicated by the PLMN identifier is accessed through the first access network device; If the PLMN identifier is the same as the second identifier, perform the first operation; Wherein, the PLMN identifier is the identifier of the PLMN that the terminal requests to access, the second identifier is used to indicate the PLMN that has already used satellite access, and the satellite is the satellite indicated by the first identifier included in the satellite identifier list.

17. The method according to claim 15 or 16, characterized in that, The execution of the first operation includes: If the satellite identifier is included in the satellite identifier list, access is granted to the first access network device; If the satellite identifier is not included in the satellite identifier list, and the area indicated by any of the cell identifiers and / or any of the TA identifiers is included in the area indicated by the first information, the first access network device shall not be connected. Access to the first access network device occurs when the satellite identifier is not included in the satellite identifier list, and the areas indicated by all the cell identifiers and / or all the TA identifiers are not included in the area indicated by the first information.

18. A communication method, characterized in that, The method includes: The first core network device sends the first information to the terminal; The first information is used to indicate the area to which the satellite identifier list applies, and the satellite identifier list contains at least one first identifier, which is used to indicate a satellite.

19. A communication device, characterized in that, The communication device is used to perform the communication method according to any one of claims 1 to 7 or claims 8 to 17.

20. A communication system, characterized in that, include: A first core network device and a terminal; wherein the first core network device is configured to implement the communication method of any one of claims 1 to 7, and the terminal is configured to implement the communication method of any one of claims 8 to 17.

21. A storage medium storing instructions, characterized in that, When the instructions are executed on the communication device, the communication device performs the communication method as described in any one of claims 1 to 7 or claims 8 to 17.

22. A computer program product, said computer program product comprising a computer program or instructions, characterized in that, When the computer program or instructions are executed by a processor, they implement the communication method according to any one of claims 1 to 7 or claims 8 to 17.

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