CN115868125A

CN115868125A - Communication method, device, system, electronic device and medium

Info

Publication number: CN115868125A
Application number: CN202280003151.5A
Authority: CN
Inventors: 吴锦花
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-03-28
Also published as: WO2024050736A1

Abstract

The present disclosure provides a communication method applied to a satellite, where the satellite serves as an access point, and is used for a terminal to access a core network through the satellite in a non-3GPP access manner, and the method includes: receiving an EAP data packet sent by the terminal through layer two connection with the terminal, wherein the layer two connection is established when the terminal determines that the access to a core network through the satellite in a non-3GPP access mode is credible connection; encapsulating the EAP data packet and the identification information of the satellite into a first message, wherein the EAP data packet comprises a network access identifier; and sending the first message to a satellite access gateway function network element in an access network, wherein the satellite access gateway function network element provides a trusted non-3GPP gateway function, and the first message is used for generating a registration message by the satellite access gateway function network element according to the first message, and the registration message comprises the identification information.

Description

Communication method, device, system, electronic device and medium

Technical Field

The present disclosure relates to the field of communications, and in particular, to a communication method, apparatus, system, electronic device, and medium.

Background

In the existing solutions for satellite Access defined by 3GPP, a satellite NG-RAN (NG-RAN, next Generation Radio Access Network, new Generation Access Network) is an Access Network that provides a terminal with satellite Access through an NR (New Radio, new air interface). However, in the related art, for a satellite that does not support NR, there is no existing 3GPP network solution to provide a service thereto so that a terminal accesses a core network through the satellite.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a communication method, apparatus, system, electronic device, and medium.

According to a first aspect of the embodiments of the present disclosure, there is provided a communication method applied to a satellite, where the satellite is used as an access point, and is used for a terminal to access a core network through the satellite in a non-3GPP access manner, the method including:

receiving an EAP data packet sent by the terminal through layer two connection with the terminal, wherein the layer two connection is established when the terminal determines that the connection to a core network through the satellite in a non-3GPP access mode is a trusted connection;

encapsulating the EAP packet and the identification information of the satellite into a first message, wherein the EAP packet comprises a network access identifier;

and sending the first message to a satellite access gateway function network element in an access network, wherein the satellite access gateway function network element provides a trusted non-3GPP gateway function, and the first message is used for the satellite access gateway function network element to generate a registration message according to the first message, and the registration message comprises the identification information.

According to a second aspect of the embodiments of the present disclosure, there is provided a communication method applied to a satellite access gateway function network element, the method including:

receiving a first message sent by a satellite, wherein the first message is obtained by encapsulating an EAP (extensible authentication protocol) data packet sent by a terminal and identification information of the satellite by the satellite, a network element of a satellite access gateway function provides a trusted non-3GPP (third generation partnership project) gateway function, and the terminal is connected with a core network in a non-3GPP access mode through the satellite in a trusted manner;

and generating a registration message according to the first message, wherein the registration message comprises the identification information.

According to a third aspect of the embodiments of the present disclosure, there is provided a communication method applied to a target network element of a core network, the method including:

receiving a registration message sent by a satellite access gateway function network element, wherein the registration message is generated according to a first message, the first message is obtained by encapsulating an EAP data packet sent by a terminal and identification information of the satellite by the satellite, the satellite access gateway function network element provides a trusted non-3GPP gateway function, and the terminal is connected with a core network in a non-3GPP access mode through the satellite in a trusted mode.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a communication method applied to a terminal, the method including:

when the fact that the core network accessed through the satellite in a non-3GPP access mode is a trusted connection is determined, layer two connection with the satellite is established;

and sending an EAP data packet to the satellite through the layer two connection, wherein the EAP data packet is used for encapsulating the EAP data packet and the identification information of the satellite into a first message by the satellite and sending the first message to the satellite access gateway function network element.

According to a fifth aspect of the embodiments of the present disclosure, there is provided a communication method applied to a communication system, where the communication system includes a satellite, a satellite access gateway function network element, and a target network element, the satellite serves as an access point, so that a terminal accesses a core network through the satellite in a non-3GPP access manner, and the method includes: the satellite receives an EAP data packet sent by a terminal through layer two connection with the terminal, wherein the layer two connection is established when the terminal determines that the terminal is credibly connected with a core network accessed through the satellite in a non-3GPP access mode;

the satellite encapsulates the EAP data packet and the identification information of the satellite into a first message, wherein the EAP data packet comprises a network access identifier;

the satellite sends the first message to a satellite access gateway function network element in an access network, and the satellite access gateway function network element provides a trusted non-3GPP gateway function;

the satellite access gateway function network element generates a registration message according to the first message, wherein the registration message comprises the identification information;

and the satellite access gateway function network element sends the registration message to the target network element.

According to a sixth aspect of the embodiments of the present disclosure, there is provided a communication apparatus applied to a satellite, where the satellite serves as an access point, and is used for a terminal to access a core network through the satellite in a non-3GPP access manner, the apparatus including:

a first receiving module, configured to receive an EAP packet sent by the terminal through a layer two connection with the terminal, where the layer two connection is established when the terminal determines that a non-3GPP access mode to a core network through the satellite is a trusted connection;

an encapsulation module configured to encapsulate the EAP packet and the identification information of the satellite into a first message, the EAP packet including a network access identifier;

a first sending module, configured to send the first message to a satellite access gateway function network element in an access network, where the satellite access gateway function network element provides a trusted non-3GPP gateway function, and the first message is used for the satellite access gateway function network element to generate a registration message according to the first message, where the registration message includes the identification information.

According to a seventh aspect of the embodiments of the present disclosure, there is provided a communication apparatus applied to a satellite access gateway function network element, the apparatus including:

a second receiving module, configured to receive a first message sent by a satellite, where the first message is obtained by the satellite through encapsulation according to an EAP packet sent by a terminal and identification information of the satellite, the satellite access gateway function network element provides a trusted non-3GPP gateway function, and the terminal is connected to a core network through the satellite in a non-3GPP access manner in a trusted manner;

a generating module configured to generate a registration message from the first message, the registration message including the identification information.

According to an eighth aspect of the embodiments of the present disclosure, there is provided a communication apparatus, which is applied to a target network element of a core network, the method including:

a third receiving module, configured to receive a registration message sent by a satellite access gateway function network element, where the registration message is generated according to a first message, the first message is obtained by encapsulating, by the satellite, an EAP data packet sent by a terminal and identification information of the satellite, the satellite access gateway function network element provides a trusted non-3GPP gateway function, and the terminal is connected to a core network in a non-3GPP access manner through the satellite in a trusted manner.

According to a ninth aspect of the embodiments of the present disclosure, there is provided a communication apparatus applied to a terminal, the apparatus including:

a determining module configured to establish a layer two connection with a satellite when it is determined that a non-3GPP access mode access to a core network through the satellite is a trusted connection;

a third sending module, configured to send an EAP packet to the satellite through the layer two connection, where the EAP packet is used for the satellite to encapsulate the EAP packet and the identification information of the satellite into a first message, and send the first message to the satellite access gateway function network element.

According to a tenth aspect of the embodiments of the present disclosure, a communication system is provided, where the communication system includes a satellite, a satellite access gateway function network element, and a target network element, and the satellite is used as an access point, so that a terminal accesses a core network through the satellite in a non-3GPP access manner;

the satellite is used for receiving an EAP data packet sent by a terminal through layer two connection with the terminal, wherein the layer two connection is established when the terminal determines that the terminal is credible in connection with a core network accessed through the satellite in a non-3GPP access mode;

the satellite is used for encapsulating the EAP data packet and the identification information of the satellite into a first message, wherein the EAP data packet comprises a network access identifier;

the satellite is used for sending the first message to a satellite access gateway function network element in an access network, and the satellite access gateway function network element provides a trusted non-3GPP gateway function;

the satellite access gateway function network element is configured to generate a registration message according to the first message, where the registration message includes the identification information;

and the satellite access gateway function network element is used for sending the registration message to the target network element.

According to an eleventh aspect of embodiments of the present disclosure, there is provided an electronic apparatus including:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to perform the steps of the method of any one of the first aspects of the present disclosure, or the steps of the method of any one of the second aspects of the present disclosure, or the steps of the method of any one of the third aspects of the present disclosure, or the steps of the method of any one of the fourth aspects of the present disclosure.

According to a twelfth aspect of embodiments of the present disclosure, there is provided a computer readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the steps of the method of any one of the first aspects of the present disclosure, or the steps of the method of any one of the second aspects of the present disclosure, or the steps of the method of any one of the third aspects of the present disclosure, or the steps of the method of any one of the fourth aspects of the present disclosure.

In the technical solution provided in the embodiment of the present disclosure, a satellite is used as an access point of an access network, an EAP packet sent by a receiving terminal is connected through a layer two connection, and after the EAP packet and identification information for identifying the satellite are encapsulated, a registration request is generated based on the first message through a satellite access gateway functional network element, so that the terminal accesses a core network through the satellite in a trusted non-3GPP access manner, and a mobile network can provide a service to a terminal under a satellite that does not support NR and acquire an identification message of the satellite.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1A illustrates a schematic diagram of a satellite-based communication architecture to which embodiments of the present disclosure are applicable.

Fig. 1B illustrates another satellite-based communication architecture diagram to which embodiments of the present disclosure are applicable.

Fig. 2 is a flow chart illustrating a method of communication according to an example embodiment.

Fig. 3 is a flow chart illustrating a method of communication according to an example embodiment.

Fig. 4 is a flow chart illustrating a method of communication according to an example embodiment.

Fig. 5 is a flow chart illustrating a method of communication according to an example embodiment.

Fig. 6 is a flow chart illustrating a method of communication according to an example embodiment.

Fig. 7 is a flow chart illustrating a method of communication according to an example embodiment.

Fig. 8 is a flow chart illustrating a method of communication according to an example embodiment.

Fig. 9 is a flow chart illustrating a method of communication according to an example embodiment.

Fig. 10 is a flow chart illustrating a method of communication according to an example embodiment.

Fig. 11 is a schematic diagram illustrating a communication system in accordance with an example embodiment.

Fig. 12 is a flow chart illustrating a method of communication according to an example embodiment.

Fig. 13 is a flow chart illustrating a method of communication according to an example embodiment.

FIG. 14 is an interaction diagram illustrating a method of communication, according to an example embodiment.

Fig. 15 is a block diagram illustrating a communication device according to an example embodiment.

Fig. 16 is a block diagram illustrating a communication device according to an example embodiment.

Fig. 17 is a block diagram illustrating a communication device according to an example embodiment.

Fig. 18 is a block diagram illustrating a communication device according to an example embodiment.

FIG. 19 is a block diagram illustrating an electronic device in accordance with an example embodiment.

Fig. 20 is a block diagram illustrating a network device in accordance with an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the disclosure, as detailed in the appended claims.

It should be noted that all actions of acquiring signals, information or data in the present application are performed under the premise of complying with the corresponding data protection regulation policy of the country of the location and obtaining the authorization given by the owner of the corresponding device.

To solve the problems in the related art, the present disclosure provides a communication method, apparatus, system, electronic device, and medium.

The embodiments of the present disclosure may be applicable to a 4G (fourth generation mobile communication system) evolution system, such as a Long Term Evolution (LTE) system, or may also be a 5G (fifth generation mobile communication system) system, such as an access network adopting a New radio access technology (New RAT); cloud Radio Access Network (CRAN) and other communication systems.

Fig. 1A illustrates a schematic diagram of a satellite-based communication architecture to which the embodiment of the present disclosure is applicable, it should be understood that the embodiment of the present disclosure is not limited to the system shown in fig. 1A, and moreover, the apparatus in fig. 1A may be hardware, software that is functionally divided, or a combination of the two. As shown in fig. 1A, a system architecture provided in an embodiment of the present disclosure includes a terminal, a satellite access gateway function network element, a mobility management network element, a session management network element, a user plane network element, an authentication server function network element, a policy control function network element, a unified data management network element, and a Data Network (DN). The satellite and the satellite Access gateway functional network element form a Trusted Non-3GPP Access network (Trusted Non-3GPP Access), and the satellite is used as an Access point for a terminal to Access a core network in a Trusted Non-3GPP Access mode through the satellite.

A Data Network (DN) for providing Data transmission Service to users may be a Protocol Data Unit (PDN) network, such as the internet, an IP Multimedia Service (IMS), and the like.

Referring to the system architecture diagram of 5G shown in fig. 1B: the mobility management network element may include an access and mobility management entity (AMF) in 5G. The mobility management network element is responsible for access and mobility management of the terminal in the mobile network. The AMF is responsible for terminal access and mobility management, NAS message routing, session Management Function (SMF) selection, and the like. The AMF may act as an intermediate network element for transmitting session management messages between the terminal and the SMF.

And the session management network element is responsible for forwarding path management, and if a message forwarding strategy is issued to the user plane network element, the user plane network element is instructed to process and forward the message according to the message forwarding strategy. The session management network element may be an SMF in 5G (as shown in fig. 1B), and is responsible for session management, such as session creation/modification/deletion, user plane network element selection, and allocation and management of user plane tunnel information.

The user plane network element may be a User Plane Function (UPF) in a 5G architecture, as shown in fig. 1B. The UPF is responsible for message processing and forwarding.

The system architecture provided by the embodiment of the present disclosure may further include a data management network element, configured to process a terminal device identifier, access authentication, registration, mobility management, and the like. In the 5G communication system, the data management network element may be a Unified Data Management (UDM) network element.

The system architecture provided by the embodiment of the present disclosure may further include a Policy Control Function (PCF) or a policy and charging control function (PCRF). Wherein, the PCF or PCRF is responsible for policy control decision and flow charging based control.

The system architecture provided in the present disclosure may further include an Authentication Server Function (AUSF), where the AUSF is configured to receive a request for identity verification of the UE from the AMF, request a key to the UDM, and forward the key issued by the UDM to the AMF for Authentication processing.

The system architecture provided by the embodiment of the present disclosure may further include a network storage network element, configured to maintain real-time information of all network function services in the network. In the 5G communication system, the network storage network element may be a Network Repository Function (NRF) network element. Network repository network elements may store information about many network elements, such as SMF information, UPF information, AMF information, and the like. Network elements such as an AMF, an SMF, and a UPF in the network may be connected to an NRF, so that on one hand, the network element information of the network element itself may be registered in the NRF, and on the other hand, other network elements may obtain the information of the registered network element from the NRF. Other network elements (such as AMF) may obtain optional network elements by requesting NRF according to network element type, data network identification, unknown area information, etc. If a Domain Name System (DNS) server is integrated in the NRF, the corresponding selection function network element (such as AMF) may request from the NRF to obtain other network elements (such as SMF) to be selected.

The Satellite (Satellite) is a specific implementation form of a trusted non-3GPP access network (tnan), and may also be referred to as a trusted non-3GPP access node (tnap), and provides a wireless access service for a terminal. Also included in the TNAN is a Satellite Access Gateway Function (S-AGF) that corresponds to a Trusted Non-3GPP Access Gateway Function (TNGF) in the Trusted Non-3GPP Access network. As shown in fig. 1B, the satellite may communicate as a Ta interface between the TNAP and the S-AGF, and the Ta interface may be an AAA (Authentication-Authorization-Accounting) interface. The S-AGF may communicate with the AMF over an N2 interface, which N2 interface may be an enhanced N2 interface to enable reliable communication between the S-AGF and the AMF.

A terminal, which may also be referred to as an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user device, etc. The terminal has at least satellite Access capability and NAS (Non-Access Stratum) capability. Fig. 1B illustrates a UE as an example. The terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capability, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, an internet of things terminal device, such as a fire detection sensor, a smart water/electricity meter, a factory monitoring device, and so forth. The terminal may be connected to a trusted non-3GPP access network (TNAN), and may register to the 5G core network through the TNAN using an EAP (Extensible Authentication Protocol) based procedure. As shown in fig. 1B, after registering in the 5G core network, the terminal may communicate with the S-AGF through the NWt connection, so as to initiate one or more PDU (Protocol Data Units) sessions and/or transmit non-seamless offload traffic to the SMF through the S-AGF and the AMF. In addition, the link between the terminal and the satellite may be any data link that supports EAP encapsulation, such as PPP, PANA, ethernet, IEEE 802.3, IEEE 802.11, and so on.

It is understood that the above functions may be either network elements in a hardware device, software functions running on dedicated hardware, or virtualization functions instantiated on a platform (e.g., a cloud platform).

Fig. 2 is a communication method, according to an exemplary embodiment, applied to a satellite serving as an access point, for a terminal to access a core network through the satellite in a non-3GPP access manner, where the method includes:

s201, the satellite receives an EAP data packet sent by the terminal through Layer 2connection (L2 connection) with the terminal, and the Layer 2connection is established when the terminal determines that the terminal is credible in connection with a core network accessed through the satellite in a non-3GPP access mode.

S202, the satellite encapsulates an EAP data packet and identification information of the satellite into a first message, wherein the EAP data packet comprises a network access identifier.

S203, the satellite sends the first message to a satellite access gateway function network element in the access network, the satellite access gateway function network element provides a trusted non-3GPP gateway function, the first message is used for the satellite access gateway function network element to generate a registration message according to the first message, and the registration message comprises identification information.

Specifically, the terminal may select a Public Land Mobile Network (PLMN) through a trusted non-3GPP access Network selection procedure, and select a non-3GPP access Network for accessing the Mobile Network, an access point of the access Network being provided by the trusted non-3GPP satellite.

Further, the terminal establishes an L2 connection (i.e., layer two connection) with the access point (i.e., satellite) after detecting the access point. The satellite then sends an EAP request to the terminal after the L2 connection is established to cause the terminal to initiate an EAP procedure to encapsulate the EAP message into an EAP packet, which can be an IEEE 802.3/802.1x packet, an IEEE 802.11/802.1x packet, or a PPP packet, etc. The EAP packet may include a NAI (network access identifier), which may be used to indicate that the terminal requests to connect to a specific PLMN, and may be, for example, a message as follows: NAI = = "< any _ username > @ nai.5gc.mnc < MNC >. MCC >.3gppnetwork.org".

In an example, the satellite access gateway function network element may further send the registration message to a target network element in the core network after generating the registration message. And then the terminal accesses the core network in a non-3GPP access mode.

The registration request sent by the network element of the satellite access gateway function to the target network element (e.g. the selected AMF network element) after selecting the network element may include a terminal location information (ULI) which contains a "null" IP address (e.g. 0.0.0.0) because the terminal has not been assigned an IP address, and may also include the above-mentioned identification information. After the terminal is assigned an IP address, the satellite access gateway function network element will include this address and/or identification message in the subsequent N2 message.

Optionally, the sending the first message to a satellite access gateway function network element of the trusted non-3GPP access network includes: sending the first message to a satellite access gateway function network element through an AAA interface of the satellite and the satellite access gateway function network element; wherein the first message is an AAA message.

Wherein the identification information in the first message can be used for authentication, authorization and accounting. That is, the information interaction between the satellite and the satellite access gateway can be performed through an AAA interface, which is a data connection (L2 connection, i.e., layer two connection) supporting EAP encapsulation.

Specifically, the satellite access gateway function network element may serve as an AAA proxy, and the NAI may trigger the satellite to send an AAA message to the satellite access gateway function network element serving as the AAA proxy.

In one example, the identification information includes one or more of a spacecraft International telecommunications union Identity number (S-ITU ID), a commission on Space Research Identity number (COSPAR ID), an International satellite Identifier (ID), and a National Space Science Data Center identification (NSSDC ID). The international satellite identifiers can be identical to international space research committee numbers, are COSPAR IDs, and are only called differently.

In one example, the target network element is an AMF network element.

The network element with the satellite access gateway function may select one AMF network element from the plurality of AMF network elements before sending the registration request to the AMF network element.

In another example, the AMF network element is configured to send the identification information to a UDM network element in the core network.

Specifically, the core network may further include a plurality of UDM network elements, the AMF network element may select one UDM network element from the plurality of UDMs for registration, and the identification message may be sent when the AMF network element provides an access type (the access type is a non-3GPP access) when registering with the UDM.

In another example, the AMF network element is further configured to send the identification information to an SMF network element and/or a PCF network element in the core network. The identification information is sent to the SMF/PCF network element, which can be managed with policies (e.g. QoS, mobility management) and charging control.

In an example, the satellite access gateway function network element and the AMF network element may communicate via an N2 interface, and the satellite access gateway function network element is configured to send the registration message to the AMF network element via the N2 interface according to the first message.

The N2 interface may be an enhanced N2 interface, so as to ensure reliable communication between the satellite access gateway function network element and the network element. It will be appreciated that in such a case, the first message may be an N2 message. In addition, the Satellite access gateway function network element may further receive, through the N2 interface, an identity Response (identity Response), an SMC (Satellite Mobile Channel) Request message, an N2 Initial context Setup Request message (N2 Initial Ctx Setup Request), and send the identity Request (identity Request), the N2 Initial context Setup Response message (N2 Initial Ctx Setup Response), and the like, sent by the AMF.

It should be noted that, taking the target Network element as AMF as AN example, after the satellite sends the first message to the satellite access gateway function Network element, the satellite access gateway function Network element may send AN EAP-Req/5G-Start message to the terminal through the L2 interface, where the EAP-Req/5G-Start message is used to request the terminal to send access point parameters (AN parameters, access point parameters), and the terminal only includes NSSAI (Network Slice Selection Assistance Information) in the access point parameters in case of trusted non-3GPP access. After receiving the access point parameter, the network element of the satellite access gateway function performs selection of the AMF network element, and sends a registration request to the AMF network element, where the registration request may be generated according to the access point parameter and the identification information in the first message.

After receiving the registration request, the AMF may interact with the AUSF, the satellite access gateway function network element, and the terminal through the satellite access gateway function network element, so that the terminal is accessed to the core network where the AMF is located. Specifically, the method may include creating a TNGF (corresponding to a satellite access gateway function network element) key in the terminal and the AMF, generating a TNAP (corresponding to a satellite) key from the TNGF key by the satellite access gateway function network element, and providing the TNAP key to the satellite, where the TNAP key generation manner may be based on a non-3GPP access technology protocol, for example, in the case of the IEEE 802.11 standard, the TNAP key is a pairwise master key. The TNAP key may be used to secure layer two connections between the terminal and the satellite, and in the case of the IEEE 802.11 standard pair, a 4-way handshake is performed to establish a secure environment between the satellite and the terminal for protecting unicast and multicast traffic over the air. The terminal may also receive an IP Configuration sent by the satellite access gateway function network element, for example, whether a DHCP (Dynamic Host Configuration Protocol) is used or not, so that the terminal connects to the access network and obtains the IP Configuration and establishes a secure NWt connection with the satellite access gateway function network element. Further, the NAS registration accept message is sent by the AMF to the satellite access gateway function network element and forwarded to the UE through the established NWt connection, so that the terminal can use the TNAN to transmit non-seamless offload traffic and/or establish one or more PDU sessions to implement access to the core network.

In the embodiment of the disclosure, a satellite is used as an access point of an access network, an EAP data packet sent by a receiving terminal is connected through a layer two connection, and after the EAP data packet and identification information for identifying the satellite are encapsulated, a registration request is generated based on the first message through a satellite access gateway function network element, so that the terminal is accessed to a core network through the satellite in a trusted non-3GPP access manner, and a mobile network can provide a service to a terminal under a satellite that does not support NR and acquire an identification message of the satellite.

Fig. 3 is a flowchart illustrating a communication method applied to a satellite access gateway function network element according to an exemplary embodiment, where the method includes:

s301, a satellite access gateway function network element receives a first message sent by a satellite, the first message is obtained by the satellite through encapsulation according to an EAP data packet sent by a terminal and identification information of the satellite, the satellite access gateway function network element provides a credible non-3GPP gateway function, and the terminal is connected with a core network through the satellite in a non-3GPP access mode in a credible mode.

S302, the satellite access gateway function network element generates a registration message according to the first message, wherein the registration message comprises identification information.

In an example, the identification information includes one or more of a spacecraft international electrotechnical commission number, an international space research commission number, an international satellite identifier, and a national space science data center identification.

In the embodiment of the disclosure, after an EAP packet sent by a terminal is received as an access point of an access network by a satellite and the packet and identification information for identifying the satellite are encapsulated, a registration request is generated based on the first message by a satellite access gateway functional network element, so that the terminal is accessed to a core network by the satellite in a trusted non-3GPP access manner, and a mobile network can provide a service to a terminal under a satellite that does not support NR and acquire an identification message of the satellite.

Fig. 4 is a flowchart illustrating a communication method applied to a satellite access gateway function network element according to an example embodiment, where the method includes:

s401, a satellite access gateway function network element receives a first message sent by a satellite, the first message is obtained by encapsulating an EAP data packet sent by the satellite according to a terminal and identification information of the satellite, the satellite access gateway function network element provides a credible non-3GPP gateway function, and the terminal is connected with a core network in a non-3GPP access mode through the satellite in a credible mode.

S402, the satellite access gateway function network element generates a registration message according to the first message, wherein the registration message comprises identification information.

And S403, the satellite access gateway function network element sends the registration message to a target network element in the core network.

In one example, the target network element is an AMF network element.

In an example, the satellite access gateway function network element and the AMF network element may communicate through an N2 interface, and the satellite access gateway function network element is configured to send the registration message to the AMF network element through the N2 interface.

In the embodiment of the disclosure, after an EAP packet sent by a terminal is received as an access point of an access network by a satellite and the packet and identification information for identifying the satellite are encapsulated, a registration request is generated based on the first message by a satellite access gateway functional network element and sent to a target network element in a core network, so that the terminal is accessed to the core network by the satellite in a trusted non-3GPP access manner, and a mobile network can provide a service to a terminal under a satellite that does not support NR and acquire an identification message of the satellite.

Fig. 5 is a flowchart illustrating a communication method applied to a satellite access gateway function network element according to an exemplary embodiment, where the method includes:

s501, a satellite access gateway function network element receives a first message sent by a satellite, the first message is obtained by the satellite through encapsulation according to an EAP data packet sent by a terminal and identification information of the satellite, the satellite access gateway function network element provides a credible non-3GPP gateway function, and the terminal is connected with a core network through the satellite in a non-3GPP access mode in a credible mode.

S502, the satellite access gateway function network element generates a registration message according to the first message, wherein the registration message comprises identification information.

And S503, the satellite access gateway function network element sends a registration message to the AMF network element through the N2 interface.

S504, after the NWt connection between the satellite access gateway function network element and the terminal is successfully established, an initial context setting response message is sent to the AMF network element through the N2 interface.

The network element of the satellite access gateway function may be sent after the network element successfully establishes the NWt connection in response to receiving the initial context setup request message sent by the AMF.

And S505, the satellite access gateway function network element receives the registration acceptance message sent by the AMF network element through the N2 interface, and sends the registration acceptance message to the terminal through the NWt connection, wherein the registration acceptance message is used for the terminal to access the core network through a trusted non-3GPP access mode.

The Registration Accept message may be a NAS Registration Accept message (Non-Access Stratum Registration Accept). The registration accept message may be sent by the AMF in response to the initial context setup response message and sent to the terminal through the NWt connection by the satellite access gateway function network element. The terminal, in response to receiving the registration accept message, may then access the core network using a satellite-based viable non-3GPP access network and transport non-seamless offload traffic and/or establish one or more PDU sessions.

In yet another example, the AMF network element is further configured to send the identification information to an SMF network element and/or a PCF network element in the core network. The identification information is sent to the SMF/PCF network element, which can be managed with policies (e.g. QoS, mobility management) and charging control.

In another example, after the terminal accesses the core network through the trusted non-3GPP based on the registration acceptance message, the satellite sends the identification information in the registration message to one or more of the UDM network element, the SMF network element, or the PCF network element.

By adopting the scheme, the satellite is used as an access point of an access network, an EAP data packet sent by a receiving terminal is connected through a layer two, and the data packet and identification information for identifying the satellite are encapsulated, then a registration request is generated and sent to an AMF network element in a core network through a satellite access gateway function network element based on a first message, so that the terminal can establish safe NWt connection with the satellite access gateway function network element, and a registration acceptance message sent by the AMF network element is sent to the terminal through the satellite access gateway function network element based on the NWt connection, so that the terminal can access the core network by using a credible 3GPP access mode based on the satellite according to the registration acceptance message, and the mobile network can provide services for the terminal under the satellite which does not support NR.

Fig. 6 is a flowchart illustrating a communication method applied to a target network element of a core network according to an exemplary embodiment, where the method includes:

s601, a target network element receives a registration message sent by a satellite access gateway function network element, the registration message is generated according to a first message, the first message is obtained by encapsulating an EAP data packet sent by a terminal and identification information of a satellite by the satellite, the satellite access gateway function network element provides a trusted non-3GPP gateway function, and the terminal is connected with a core network in a non-3GPP access mode through the satellite in a trusted mode.

The specific implementation manner that the target network element enables the terminal to access the core network in the trusted non-3GPP access manner after receiving the registration message sent by the satellite access gateway functional network element is described in more detail in the foregoing, which is not described herein again.

In one example, the target network element is an AMF network element.

The network element with the satellite access gateway function may select one AMF network element from the plurality of AMF network elements as a target network element before sending a registration request to the AMF network element.

In an example, the satellite access gateway function network element and the AMF network element may communicate via an N2 interface, and the satellite access gateway function network element is configured to send the registration message to the target network element via the N2 interface according to the first message.

That is, the receiving, by the target network element, the registration message sent by the satellite access gateway function network element in step S601 includes:

and the target network element (namely the AMF network element) receives the registration message sent by the satellite access gateway function network element through the N2 interface.

Fig. 7 is a flowchart illustrating a communication method applied to a target network element of a core network according to an exemplary embodiment, where the method includes:

s701, a target network element receives a registration message sent by a satellite access gateway function network element, the registration message is generated according to a first message, the first message is obtained by encapsulating an EAP data packet sent by a terminal and identification information of a satellite by the satellite, the satellite access gateway function network element provides a trusted non-3GPP gateway function, and the terminal is connected with a core network in a non-3GPP access mode through the satellite in a trusted mode.

S702, the target network element receives an initial context setting response message sent by the satellite access gateway function network element through the N2 interface, wherein the initial context setting response message is sent after the NWt connection between the satellite access gateway function network element and the terminal is successfully established.

S703, the target network element sends a registration receiving message to the satellite access gateway function network element through the N2 interface, and the registration receiving message is used for the satellite access gateway function network element to send the registration receiving message to the terminal through the NWt connection.

In one example, the target network element is an AMF network element.

By adopting the scheme, the satellite is used as an access point of an access network, an EAP data packet sent by a receiving terminal is connected through a layer two, and the data packet and identification information for identifying the satellite are encapsulated, then a registration request is generated and sent to a target network element in a core network through a satellite access gateway function network element based on a first message, so that the terminal can establish safe NWt connection with the satellite access gateway function network element, and a registration acceptance message sent by the target network element is sent to the terminal through the satellite access gateway function network element based on the NWt connection, so that the terminal can access the core network by using a credible 3GPP access mode based on the satellite according to the registration acceptance message, and a mobile network can provide services for the terminal under the satellite which does not support NR.

Fig. 8 is a flowchart illustrating a communication method applied to a target network element of a core network according to an exemplary embodiment, where the target network element is an AMF network element, and as shown in fig. 8, the method includes:

s801, a target network element receives a registration message sent by a satellite access gateway function network element, the registration message is generated according to a first message, the first message is obtained by encapsulating an EAP data packet sent by a terminal and identification information of a satellite by the satellite, the satellite access gateway function network element provides a trusted non-3GPP gateway function, and the terminal is connected with a core network in a non-3GPP access mode through the satellite in a trusted mode.

And S802, after the terminal accesses the core network based on the registration acceptance message through a trusted non-3GPP mode, the target network element sends the identification information in the registration message to one or more of a UDM network element, a SMF network element or a PCF network element.

In one example, sending the identification information in the registration message to the UDM network element includes:

and when the AMF network element registers to the UDM network element, the target access type and the identification information are sent to the UDM network element through an AMF registration request.

By adopting the scheme, the core network is accessed to the terminal in a trusted non-3GPP mode, the identification information of the satellite is sent to one or more of the UDM network element, the SMF network element or the PCF network element through the AMF network element, so that the UDM network element, the SMF network element or the PCF network element can perform data management, policy management (such as QoS and mobility management) and charging control based on the identification information of the satellite, the terminal can access the core network by using a trusted 3GPP access mode based on the satellite according to the registration acceptance information, the mobile network can provide service for the terminal under the satellite which does not support NR, and effective management and charging can be performed based on the satellite identification.

Fig. 9 is a flowchart illustrating a communication method applied to a target network element of a core network according to an exemplary embodiment, where the target network element is an AMF network element, and as shown in fig. 9, the method includes:

s901, a target network element receives a registration message sent by a satellite access gateway function network element, the registration message is generated according to a first message, the first message is obtained by encapsulating an EAP data packet sent by a terminal and identification information of a satellite by the satellite, the satellite access gateway function network element provides a trusted non-3GPP gateway function, and the terminal is connected with a core network in a non-3GPP access mode through the satellite in a trusted mode.

S902, the target network element receives an initial context setting response message sent by the satellite access gateway function network element through the N2 interface, wherein the initial context setting response message is sent after the NWt connection between the satellite access gateway function network element and the terminal is successfully established.

S903, the target network element sends a registration receiving message to the satellite access gateway function network element through the N2 interface, and the registration receiving message is used for the satellite access gateway function network element to send the registration receiving message to the terminal through the NWt connection.

Fig. 10 is a flowchart illustrating a communication method applied to a terminal according to an exemplary embodiment, and as shown in fig. 10, the method includes:

s1001, when the terminal determines that the connection with the core network through the satellite in a non-3GPP access mode is a trusted connection, the terminal establishes layer two connection with the satellite.

S1002, the terminal sends an EAP data packet to the satellite through the layer two connection, wherein the EAP data packet is used for encapsulating the EAP data packet and the identification information of the satellite into a first message by the satellite.

In another example, sending EAP packets to a satellite over a layer two connection includes: in response to receiving an EAP request that the satellite sends over the layer two connection, an EAP packet is sent to the satellite over the layer two connection.

The EAP request may be sent by the satellite to the terminal in response to a successful establishment of a layer two connection between the satellite and the terminal.

In an example, the satellite encapsulates the EAP packet and the identification information of the satellite into a first message and also sends the first message to the satellite access gateway function network element, and the satellite access gateway function network element may generate a registration message according to the first message and send the registration message to the target network element, so that the terminal accesses the core network in a non-3GPP access manner.

In one example, the target network element is an AMF network element.

The number of the AMF network elements in the core network may be multiple, and the satellite access gateway function network element may select one AMF network element from the multiple AMF network elements as a target network element before sending a registration request to the AMF network element.

In the embodiment of the disclosure, a satellite is used as an access point of an access network to receive an EAP data packet sent by a terminal and encapsulate the data packet and identification information for identifying the satellite, so that the terminal accesses a core network through the satellite in a trusted non-3GPP access manner, and a mobile network can provide services to terminals under a satellite that does not support NR and acquire identification information of the satellite.

Fig. 11 is a schematic diagram illustrating a communication system according to an exemplary embodiment, and as shown in fig. 11, a communication system 1100 includes a satellite 1101, a satellite access gateway function network element 1102, and a target network element 1103, where the satellite 1101 is used as an access point for a terminal to access a core network through a satellite in a non-3GPP access manner.

Based on the schematic diagram of the communication system shown in fig. 11, the present disclosure further provides a flowchart of a communication method shown in fig. 12 according to an exemplary embodiment, which is applied to the communication system shown in fig. 11, and as shown in fig. 12, the method includes:

s1201, the satellite receives an EAP data packet sent by the terminal through layer two connection with the terminal, and the layer two connection is established when the terminal determines that the terminal is credible in connection with a core network accessed through the satellite in a non-3GPP access mode.

S1202, the satellite encapsulates the EAP data packet and identification information of the satellite into a first message, wherein the EAP data packet comprises a network access identifier.

S1203, the satellite sends the first message to a satellite access gateway function network element in the access network, and the satellite access gateway function network element provides a trusted non-3GPP gateway function.

S1204, the satellite access gateway function network element generates a registration message according to the first message, wherein the registration message comprises identification information.

And S1205, the satellite access gateway function network element sends the registration message to the target network element.

In one example, the target network element is an AMF network element.

In an example, the satellite access gateway function network element and the AMF network element may communicate via an N2 interface, and the sending, by the satellite access gateway function network element, the registration message to the target network element in step S1205 may include: and the satellite access gateway function network element sends a registration message to the AMF network element through the N2 interface.

Fig. 13 is a flowchart illustrating a communication method according to an exemplary embodiment, which is applied to the communication system shown in fig. 11, wherein the target network element is an AMF network element, and as shown in fig. 13, the method includes:

and S1301, the satellite receives an EAP data packet sent by the terminal through layer two connection with the terminal, wherein the layer two connection is established when the terminal determines that the access to a core network through the satellite in a non-3GPP access mode is a trusted connection.

S1302, the satellite encapsulates an EAP data packet and identification information of the satellite into a first message, wherein the EAP data packet comprises a network access identifier.

S1303, the satellite sends the first message to a satellite access gateway function network element in the access network, and the satellite access gateway function network element provides a trusted non-3GPP gateway function.

And S1304, the satellite access gateway function network element generates a registration message according to the first message, wherein the registration message comprises identification information.

S1305, the satellite access gateway function network element sends a registration message to the AMF network element through the N2 interface.

S1306, after the NWt connection between the satellite access gateway function network element and the terminal is successfully established, an initial context setting response message is sent to the AMF network element through the N2 interface.

S1307, the network element with the satellite access gateway function receives the registration acceptance message sent by the AMF network element through the N2 interface, and sends the registration acceptance message to the terminal through the NWt connection, wherein the registration acceptance message is used for the terminal to access the core network through a trusted non-3GPP access mode.

In an example, the AMF network element is configured to send the identification information to a UDM network element in a core network.

That is, the sending, by the AMF network element, the identification information in the registration message to the UDM network element includes:

and when registering to the UDM network element, the AMF network element sends the target access type and the identification information to the UDM network element through an AMF registration request.

In order to enable those skilled in the art to understand the technical solution provided by the present disclosure, fig. 14 is an interaction diagram illustrating a communication method according to an exemplary embodiment, as shown in fig. 14, the method includes:

s1401, the terminal detects that the core network accessed to a PLMN through a non-3GPP access mode is credible connection, and an access point of the access network is provided by a satellite.

And S1402, establishing layer two connection between the terminal and the satellite.

S1403, the satellite sends an EAP identity request to the terminal through the layer two connection.

And S1404, the terminal sends an EAP identity response, namely an EAP data packet, to the satellite through the layer two connection.

The EAP packet may be obtained by the terminal starting an EAP procedure to encapsulate an EAP message. The EAP packets may be IEEE 802.3/802.1x packets, IEEE 802.11/802.1x packets, or PPP packets, among others. The EAP packet may include a NAI (network access identifier), which may be used to indicate that the terminal requests to connect to a specific PLMN, and may be, for example, a message as follows: NAI = = "< any _ username > @ nai.5gc.mnc < MNC >. MCC >.3gppnetwork.org".

S1405, the satellite encapsulates the EAP data packet and the identification information of the satellite into a first message, and sends the first message to the satellite access gateway function network element through the AAA interface.

Wherein the identification information of the satellite includes one or more of a spacecraft International telecommunications union Identity number (S-ITU ID), a commission on Space Research Identity number (COSPAR ID), an International satellite Identifier (ID), and a National Space Science Data Center identifier (NSSDC ID).

S1406, the satellite access gateway function network element sends an EAP-Req/5G-Start message to the terminal.

S1407, the terminal sends the access point parameter to the satellite access gateway function network element.

The access point parameters may include a terminal identifier, a PLMN identifier, NSSAI, and the like, where the terminal identifier may be, for example, 5G-GUTI (5G global Unique temporal identifier,5G Globally Unique Temporary identifier).

S1408, the satellite access gateway function network element selects one AMF network element from the multiple AMF network elements as a target network element.

S1409, the network element with the function of the satellite access gateway sends a registration request to the target network element through the N2 interface.

The registration request may be generated according to the identification information in the first message and information such as the access point parameter.

And S1410, the target network element interacts with the AUSF network element, the satellite access gateway function network element, the satellite and the terminal according to the registration request, and NWt connection between the terminal and the satellite is established.

In particular, the interaction flow may refer to the related art TS 23.502.

S1411, the satellite access gateway function network element sends an initial context setting response message to the target network element through the N2 interface.

And S1412, the target network element sends an NAS registration acceptance message to the satellite access gateway function network element through the N2 interface.

S1413, the network element of the satellite access gateway function forwards the NAS registration acceptance message to the terminal through the NWt connection so as to finish the access of the terminal to the core network through a trusted non-3GPP mode.

In an example, after the terminal accesses the core network through the trusted non-3GPP manner, the target network element may further send an identification message of the satellite to one or more of the UDM network element, the SMF network element, or the PCF network element. The UDM network element, the SMF network element or the PCF network element can perform data management, policy management (such as QoS and mobility management) and charging control based on the identification information of the satellite, so that the terminal can access a core network by using a trusted 3GPP access mode based on the satellite according to the registration acceptance message, the mobile network can provide service for the terminal under the satellite which does not support NR, and effective management and charging can be performed based on the satellite identification.

Fig. 15 is a block diagram of a communication apparatus according to an exemplary embodiment, which is applied to a satellite as an access point for a terminal to access a core network through the satellite in a non-3GPP access manner, as shown in fig. 15, the communication apparatus 1500 includes:

a first receiving module 1501, configured to receive an EAP packet sent by a terminal through a layer two connection with the terminal, where the layer two connection is established when the terminal determines that a non-3GPP access mode to a core network through a satellite is a trusted connection;

an encapsulation module 1502 configured to encapsulate an EAP packet and identification information of a satellite into a first message, the EAP packet including a network access identifier;

the first sending module 1503 is configured to send a first message to a satellite access gateway function network element in an access network, where the satellite access gateway function network element provides a trusted non-3GPP gateway function, and the first message is used for the satellite access gateway function network element to generate a registration message according to the first message, where the registration message includes identification information.

Optionally, the identification information includes one or more of a spacecraft international union identity number, an international space research commission number, an international satellite identifier, and a national space science data center identification.

Optionally, the first sending module 1503 is configured to:

sending the first message to a satellite access gateway function network element through an AAA interface of the satellite and the satellite access gateway function network element; wherein the first message is an AAA message.

Fig. 16 is a block diagram illustrating a communication device according to an exemplary embodiment, applied to a satellite access gateway function network element, as shown in fig. 16, the communication device 1600 includes:

the second receiving module 1601 is configured to receive a first message sent by a satellite, where the first message is obtained by encapsulating, by the satellite, an EAP packet sent by a terminal and identification information of the satellite, a satellite access gateway function network element provides a trusted non-3GPP gateway function, and the terminal is connected to a core network through the satellite in a non-3GPP access manner in a trusted manner;

a generating module 1602 configured to generate a registration message from the first message, the registration message including the identification information.

Optionally, the communication device 1600 comprises:

a second sending module configured to send the registration message to a target network element in the core network.

Optionally, the target network element is an AMF network element.

Optionally, the AMF network element is configured to send the identification information to a UDM network element in the core network.

Optionally, the AMF network element is further configured to send the identification information to an SMF network element and/or a PCF network element in the core network.

Optionally, the satellite access gateway function network element communicates with the AMF network element through an N2 interface, and the second sending module is configured to:

and sending a registration message to the AMF network element through the N2 interface.

Optionally, the communication device 1600 comprises:

the second sending submodule is configured to send an initial context setting response message to the AMF network element through the N2 interface after the NWt connection with the terminal is successfully established;

and the second receiving submodule is configured to receive a registration receiving message sent by the AMF network element through the N2 interface, and send the registration receiving message to the terminal through the NWt connection, wherein the registration receiving message is used for the terminal to access the core network through a trusted non-3GPP access mode.

Fig. 17 is a block diagram of a communication apparatus according to an exemplary embodiment, which is applied to a target network element of a core network, and as shown in fig. 17, the communication apparatus 1700 includes:

a third receiving module 1700, configured to receive a registration message sent by a satellite access gateway function network element, where the registration message is generated according to a first message, the first message is obtained by encapsulating, by a satellite, an EAP data packet sent by a terminal and identification information of the satellite, the satellite access gateway function network element provides a trusted non-3GPP gateway function, and the terminal is connected to a core network through the satellite in a non-3GPP access manner and is a trusted connection.

Optionally, the target network element is an AMF network element.

Optionally, the satellite access gateway function network element communicates with the AMF network element through an N2 interface, and the third receiving module 1700 is configured to:

and receiving the registration message sent by the satellite access gateway function network element through an N2 interface.

Optionally, the communication apparatus 1700 comprises:

a third receiving submodule configured to receive, through the N2 interface, an initial context setting response message sent by the satellite access gateway function network element, where the initial context setting response message is sent after the NWt connection between the satellite access gateway function network element and the terminal is successfully established;

and the third sending submodule is configured to send a registration acceptance message to the satellite access gateway function network element through the N2 interface, wherein the registration acceptance message is used for the satellite access gateway function network element to send the registration acceptance message to the terminal through the NWt connection.

Optionally, the communication apparatus 1700 comprises:

and the fourth sending submodule is configured to send the identification information in the registration message to one or more of the UDM network element, the SMF network element or the PCF network element after the terminal accesses the core network based on the registration acceptance message in a trusted non-3GPP mode.

Optionally, a fourth sending submodule configured to:

Fig. 18 is a block diagram of a communication apparatus according to an exemplary embodiment, applied to a terminal, and as shown in fig. 18, the communication apparatus 1800 includes:

a determining module 1801 configured to establish a layer two connection with a satellite when it is determined that a non-3GPP access to a core network through the satellite is a trusted connection;

the third sending module 1802 is configured to send an EAP packet to the satellite through the layer two connection, where the EAP packet is used for encapsulating, by the satellite, the EAP packet and the identification information of the satellite into the first message.

Optionally, the third sending module 1802 is configured to:

in response to receiving an EAP request that the satellite sends over the layer two connection, an EAP packet is sent to the satellite over the layer two connection.

In the above description of the apparatus according to the embodiment of the present disclosure, it should be noted that the functions of the respective modules have been described in detail in the embodiment related to the method, and will not be described in detail here.

Fig. 19 is a block diagram illustrating an electronic device 1900 according to an example embodiment. The electronic device 1900 may be provided as a terminal, for example, the electronic device 1900 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 19, electronic device 1900 may include one or more of the following components: a processing component 1902, a memory 1904, a power component 1906, a multimedia component 1908, an audio component 1910, an input/output (I/O) interface 1912, a sensor component 1914, and a communications component 1916.

The processing component 1902 generally controls overall operation of the electronic device 1900, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing assembly 1902 may include one or more processors 1920 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the process component 1902 can include one or more modules that facilitate interaction between the process component 1902 and other components. For example, the processing component 1902 can include a multimedia module to facilitate interaction between the multimedia component 1908 and the processing component 1902.

The memory 1904 is configured to store various types of data to support operations at the electronic device 1900. Examples of such data include instructions for any application or method operating on the electronic device 1900, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 1904 may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

Power components 1906 provide power to the various components of electronic device 1900. Power components 1906 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for electronic device 1900.

The multimedia component 1908 includes a screen that provides an output interface between the electronic device 1900 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1908 includes a front-facing camera and/or a rear-facing camera. The front-facing camera and/or the back-facing camera can receive external multimedia data when the electronic device 1900 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

Audio component 1910 is configured to output and/or input audio signals. For example, audio component 1910 includes a Microphone (MIC) configured to receive external audio signals when electronic device 1900 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 1904 or transmitted via the communication component 1916. In some embodiments, audio component 1910 further includes a speaker for outputting audio signals.

The I/O interface 1912 provides an interface between the processing component 1902 and peripheral interface modules, which can be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor component 1914 includes one or more sensors to provide various aspects of state assessment for the electronic device 1900. For example, the sensor component 1914 may detect an open/closed state of the electronic device 1900, the relative positioning of components, such as a display and keypad of the electronic device 1900, the sensor component 1914 may also detect a change in position of the electronic device 1900 or a component of the electronic device 1900, the presence or absence of user contact with the electronic device 1900, orientation or acceleration/deceleration of the electronic device 1900, and a change in temperature of the electronic device 1900. The sensor component 1914 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor component 1914 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 1914 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 1916 is configured to facilitate wired or wireless communication between the electronic device 1900 and other devices. The electronic device 1900 may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 1916 receives a broadcast signal or broadcast associated information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1916 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the electronic device 1900 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 1904 comprising instructions, executable by the processor 1920 of the electronic device 1900, to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

In another exemplary embodiment, a computer program product is also provided, which contains a computer program executable by a programmable apparatus, the computer program having code portions for performing the above-described communication method when executed by the programmable apparatus.

Fig. 20 is a block diagram illustrating a network device in accordance with an example embodiment. For example, the network device 2000 may be provided as a satellite, but may also be provided as a core network or other network logical entity in an access network. Referring to fig. 20, network device 2000 includes a processing component 2022, which further includes one or more processors, and memory resources, represented by memory 2032, for storing instructions, e.g., applications, executable by processing component 2022. The application programs stored in the memory 2032 may include one or more modules each corresponding to a set of instructions. Furthermore, the processing component 2022 is configured to execute instructions to perform the steps of the communication method provided by the above-described method embodiments.

The network device 2000 may also include a power component 2026 configured to perform power management of the apparatus 2000, a wired or wireless network interface 2050 configured to connect the network device 2000 to a network, and an input/output (I/O) interface 2058. The network device 2000 may operate based on an operating system, such as Windows Server, stored in the memory 2032 ^TM ，Mac OS X ^TM ，Unix ^TM ，Linux ^TM ，FreeBSD ^TM Or the like.

In another exemplary embodiment, a computer program product is also provided, which comprises a computer program executable by a programmable apparatus, the computer program having code portions for performing the above-mentioned communication method when executed by the programmable apparatus.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A communication method applied to a satellite serving as an access point for a terminal to access a core network through the satellite in a non-3GPP access manner, the method comprising:

2. The method of claim 1, wherein the identification information comprises one or more of a spacecraft international federation identity number, an international space research committee number, an international satellite identifier, and a national space science data center identification.

3. The method of claim 1, wherein sending the first message to a satellite access gateway function network element in an access network comprises:

sending the first message to the satellite access gateway function network element through the AAA interface between the satellite and the satellite access gateway function network element; wherein the first message is an AAA message.

4. A communication method applied to a satellite access gateway function network element, the method comprising:

5. The method of claim 4, wherein the identification information includes one or more of a spacecraft International Union identity number, an International space research Commission number, an International satellite identifier, and a national space science data center identification.

6. The method of claim 4, wherein the method comprises:

and sending the registration message to a target network element in a core network.

7. The method of claim 5, wherein the target network element is an AMF network element.

8. The method of claim 7, wherein the AMF network element is configured to send the identification information to a UDM network element in the core network.

9. The method of claim 7, wherein the AMF network element is further configured to send the identification information to an SMF network element and/or a PCF network element in the core network.

10. The method of claim 7, wherein the satellite access gateway function network element and the AMF network element communicate via an N2 interface, and wherein sending the registration message to a target network element in a core network comprises:

and sending a registration message to the AMF network element through an N2 interface.

11. The method of claim 10, wherein the method comprises:

after the NWt connection with the terminal is successfully established, sending an initial context setting response message to the AMF network element through the N2 interface;

and receiving a registration acceptance message sent by the AMF network element through the N2 interface, and sending the registration acceptance message to the terminal through NWt connection, wherein the registration acceptance message is used for the terminal to access the core network through a trusted non-3GPP access mode.

12. A communication method, applied to a target network element of a core network, the method comprising:

13. The method of claim 12, wherein the identification information includes one or more of a spacecraft international federation identity number, an international space research committee number, an international satellite identifier, and a national space science data center identification.

14. The method of claim 12, wherein the target network element is an AMF network element.

15. The method of claim 14, wherein the satellite access gateway function network element communicates with the AMF network element via an N2 interface, and wherein the receiving the registration message sent by the satellite access gateway function network element comprises:

and receiving the registration message sent by the AMF network element through an N2 interface.

16. The method of claim 15, wherein the method comprises:

receiving an initial context setting response message sent by the satellite access gateway function network element through the N2 interface, wherein the initial context setting response message is sent after the NWt connection between the satellite access gateway function network element and the terminal is successfully established;

and sending a registration acceptance message to the satellite access gateway function network element through the N2 interface, wherein the registration acceptance message is used for the satellite access gateway function network element to send the registration acceptance message to the terminal through NWt connection.

17. The method of claim 14, wherein the method comprises:

and after the terminal accesses the core network through the trusted non-3GPP mode based on the registration acceptance message, sending the identification information in the registration message to one or more of a UDM network element, a SMF network element or a PCF network element.

18. The method of claim 17, wherein sending the identification information in the registration message to the UDM network element comprises:

and when the AMF network element registers to the UDM network element, sending the target access type and the identification information to the UDM network element through an AMF registration request.

19. A communication method, applied to a terminal, the method comprising:

and sending an EAP data packet to the satellite through the layer two connection, wherein the EAP data packet is used for encapsulating the EAP data packet and the identification information of the satellite into a first message by the satellite.

20. The method of claim 19, wherein the identification information includes one or more of a spacecraft international federation identity number, an international space research committee number, an international satellite identifier, and a national space science data center identification.

21. The method of claim 19, wherein sending EAP packets to the satellite over the layer two connection comprises:

sending an EAP packet to the satellite over the layer two connection in response to receiving an EAP request that the satellite send over the layer two connection.

22. A communication method is applied to a communication system, the communication system comprises a satellite, a satellite access gateway function network element and a target network element, the satellite is used as an access point, and a terminal accesses a core network through the satellite in a non-3GPP access mode, and the method comprises the following steps: the satellite receives an EAP data packet sent by a terminal through layer two connection with the terminal, wherein the layer two connection is established when the terminal determines that the terminal is credibly connected with a core network accessed through the satellite in a non-3GPP access mode;

23. The method of claim 22, wherein the identification information comprises one or more of a spacecraft international federation identity number, an international space research committee number, an international satellite identifier, and a national space science data center identification.

24. The method of claim 22, wherein the target network element is an AMF network element.

25. The method of claim 24, wherein the satellite access gateway function network element communicates with the AMF network element via an N2 interface, and wherein sending the registration message to the target network element by the satellite access gateway function network element comprises:

and the satellite access gateway function network element sends a registration message to the AMF network element through an N2 interface.

26. The method of claim 25, wherein the method comprises:

after the NWt connection between the satellite access gateway functional network element and the terminal is successfully established, sending an initial context setting response message to the AMF network element through the N2 interface;

and the satellite access gateway function network element receives a registration acceptance message sent by the AMF network element through the N2 interface, and sends the registration acceptance message to the terminal through NWt connection, wherein the registration acceptance message is used for the terminal to access the core network through a trusted non-3GPP access mode.

27. The method of claim 26, wherein the method comprises:

and after the terminal accesses the core network through the trusted non-3GPP mode based on the registration acceptance message, the satellite sends the identification information in the registration message to one or more of a UDM network element, a SMF network element or a PCF network element.

28. The method of claim 27, wherein the satellite sending the identification information in the registration message to the UDM network element comprises:

and when the AMF network element registers to the UDM network element, the satellite sends a target access type and the identification information to the UDM network element through an AMF registration request.

29. A communication apparatus, applied to a satellite serving as an access point for a terminal to access a core network through the satellite in a non-3GPP access manner, the apparatus comprising:

a first receiving module, configured to receive an EAP packet sent by the terminal through a layer two connection with the terminal, where the layer two connection is established when the terminal determines that an access to a core network through the satellite in a non-3GPP access manner is a trusted connection;

30. A communications apparatus, for use in a satellite access gateway function network element, the apparatus comprising:

31. A communication apparatus, applied to a target network element of a core network, the method includes:

32. A communication apparatus, applied to a terminal, the apparatus comprising:

the device comprises a determining module and a judging module, wherein the determining module is configured to establish layer two connection with a satellite when the determining module determines that the core network accessed by the satellite in a non-3GPP access mode is credible connection;

33. A communication system is characterized by comprising a satellite, a satellite access gateway function network element and a target network element, wherein the satellite is used as an access point for a terminal to access a core network through the satellite in a non-3GPP access mode;

34. An electronic device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to perform the steps of the method of any one of claims 1-3, or the steps of the method of any one of claims 4-11, or the steps of the method of any one of claims 12-18, or the steps of the method of any one of claims 19-21.

35. A computer readable storage medium having stored thereon computer program instructions, characterized in that the program instructions, when executed by a processor, implement the steps of the method of any of claims 1-3, or the steps of the method of any of claims 4-11, or the steps of the method of any of claims 12-18, or the steps of the method of any of claims 19-21.