CN116508392A

CN116508392A - Access mode selection method, terminal equipment and network equipment

Info

Publication number: CN116508392A
Application number: CN202180078520.2A
Authority: CN
Inventors: 卢飞; 陈景然
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2023-07-28
Also published as: WO2022160123A1

Abstract

The embodiment of the application relates to an access mode selection method, terminal equipment and network equipment, wherein the method comprises the steps that the terminal equipment receives access indication information in a non-terrestrial network (NTN) from first network equipment; and the terminal equipment selects a corresponding access mode according to the access indication information. The embodiment of the application can reduce the signaling waste in the session establishment process.

Description

Access mode selection method, terminal equipment and network equipment

Technical Field

The present application relates to the field of communications, and more particularly, to an access manner selection method, a terminal device, and a network device.

Background

In a Non-terrestrial network (NTN, non-Terrestrial Network) network, a distance between a User Equipment (UE) and a satellite, and a distance between the satellite and a ground station are long, resulting in a delay between the UE and a data network being relatively large. Therefore, some services, such as Vehicle to wireless communication technology (V2X) services, are not suitable for use in NTN networks. At present, only the network side perceives which services are suitable for being used in the NTN network, and the UE cannot perceive which services are suitable for being used in the NTN network. When the UE needs to establish a PDU session, the UE may carry corresponding Single network slice selection assistance information (S-nsai, single-Network Slice Selection Assistance Information) and data network name (DNN, data Network Name). Network side devices, such as an access and mobility management function (AMF, access and Mobility Management Function) or a session management function (SMF, session Management Function), check whether S-nsai and DNN are suitable for use in an NTN network. When the S-NSSAI and DNN requested by the UE cannot be accepted by the network, the network side returns a rejection message to the UE. If the UE has a plurality of DNNs which are not suitable for use in the NTN network, the UE is rejected by the network when requesting for a plurality of times, which causes a waste of signaling.

Disclosure of Invention

The embodiment of the application provides an access mode selection method, terminal equipment and network equipment, which can reduce signaling waste in the session establishment process.

The embodiment of the application provides an access mode selection method, which comprises the following steps:

the terminal equipment receives access indication information in a non-terrestrial network (NTN) from first network equipment;

and the terminal equipment selects a corresponding access mode according to the access indication information.

The embodiment of the application also provides an information indication method, which comprises the following steps:

the first network device sends access indication information in NTN to the terminal device, wherein the access indication information is used for the terminal device to select a corresponding access mode.

the second network device sends access indication information in the NTN to the first network device, wherein the access indication information is used for the terminal device to select a corresponding access mode.

The embodiment of the application also provides a terminal device, which comprises:

a first receiving module, configured to receive, from a first network device, access indication information in a non-terrestrial network NTN;

and the selection module is used for selecting a corresponding access mode according to the access indication information.

The embodiment of the application also provides first network equipment, which comprises:

The first sending module is used for sending access indication information in the NTN to the terminal equipment, wherein the access indication information is used for the terminal equipment to select a corresponding access mode.

The embodiment of the application also provides second network equipment, which comprises:

the second sending module is used for sending access indication information in the NTN to the first network equipment, wherein the access indication information is used for the terminal equipment to select a corresponding access mode.

The embodiment of the application also provides a terminal device, which comprises: a processor, a memory and a transceiver, the memory being for storing a computer program, the processor being for invoking and running the computer program stored in the memory and controlling the transceiver to perform the method according to any of the preceding claims.

The embodiment of the application also provides a network device, which comprises: a processor, a memory and a transceiver, the memory being for storing a computer program, the processor being for invoking and running the computer program stored in the memory and controlling the transceiver to perform the method according to any of the preceding claims.

The embodiment of the application also provides a chip, which comprises: a processor for calling and running a computer program from the memory, causing the chip-mounted device to perform the method as described in any of the above.

The embodiments of the present application also propose a computer-readable storage medium storing a computer program, the computer program causing a computer to execute the method according to any one of the preceding claims.

Embodiments of the present application also propose a computer program product comprising computer program instructions for causing a computer to perform the method according to any one of the preceding claims.

The embodiment of the application also provides a computer program, which enables a computer to execute the method as set forth in any one of the above.

According to the method and the device, the corresponding access mode is selected according to the access indication information in the NTN, so that the situation that the network side refuses due to the fact that the PDU session unsuitable for the NTN is requested is avoided, and signaling waste in the session establishment process is reduced.

Drawings

Fig. 1 is a schematic diagram of an application scenario in an embodiment of the present application.

Fig. 2 is a schematic diagram of a PDU session establishment procedure 200 in a 5G network.

Fig. 3 is a schematic flow chart of an access mode selection method 300 according to an embodiment of the present application.

Fig. 4 is a flowchart of an implementation of embodiment 1 of the present disclosure.

Fig. 5 is a flowchart of an implementation of embodiment 2 of the present disclosure.

Fig. 6 is a schematic flow chart diagram of an information indication method 600 according to an embodiment of the present application.

Fig. 7 is a schematic flow chart diagram of an information indication method 700 according to an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a terminal device 800 according to an embodiment of the present application.

Fig. 9 is a schematic structural diagram of a first network device 900 according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of a first network device 1000 according to an embodiment of the present application.

Fig. 11 is a schematic structural diagram of a second network device 1100 according to an embodiment of the present application.

Fig. 12 is a schematic structural diagram of a communication device 1200 according to an embodiment of the present application.

Fig. 13 is a schematic structural diagram of a chip 1300 according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

It should be noted that the terms "first," "second," and the like in the description and the claims of the embodiments of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. The objects described as "first" and "second" may be the same or different.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced long term evolution, LTE-a) system, new Radio (NR) system, evolution system of NR system, LTE-based access to unlicensed spectrum, LTE-U) system over unlicensed spectrum, NR (NR-based access to unlicensed spectrum, NR-U) system over unlicensed spectrum, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), next Generation communication (5 th-Generation, 5G) system, or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, with the development of communication technology, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, and the like, to which the embodiments of the present application can also be applied.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, and a Stand Alone (SA) fabric scenario.

The frequency spectrum of the application in the embodiments of the present application is not limited. For example, embodiments of the present application may be applied to licensed spectrum as well as unlicensed spectrum.

Embodiments of the present application describe various embodiments in connection with a network device and a terminal device, wherein: a terminal device may also be called a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, a User device, or the like. The terminal device may be a Station (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) device, a handheld device with wireless communication functionality, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, and a next generation communication system, such as a terminal device in an NR network or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

The network device may be a device for communicating with the mobile device, the network device may be an Access Point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or an Access Point, or a vehicle device, a wearable device, and a network device (gNB) in NR network, or a network device in future evolved PLMN network, etc.

In the embodiment of the present application, the network device provides services for a cell, and the terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station, or may belong to a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that, in the embodiments of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

In the description of the embodiments of the present application, the term "corresponding" may indicate a relationship having a direct correspondence or an indirect correspondence between the two, or may indicate an association between the two, or may indicate a relationship between the two and the indicated, configured, or the like.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the following description is given of related technologies of the embodiments of the present application, and the following related technologies may be optionally combined with the technical solutions of the embodiments of the present application as an alternative, which all belong to the protection scope of the embodiments of the present application.

Fig. 1 is a schematic diagram of an architecture 100 of a 5G NTN network. As shown in fig. 1, the UE establishes a communication connection with a frequency domain remote unit (Radio Frequency Remote Unit) through an NR-Uu interface, the frequency domain remote unit (Radio Frequency Remote Unit) establishes a communication connection with a remote radio unit (RRU, remote Radio Unit) in a base station through an NR-Uu interface, the base station establishes a communication connection with a 5G Core Network (CN) through an N1/2/3 interface, and the 5G Core Network establishes a connection with a data Network through an N6 interface.

Fig. 2 is a schematic diagram of a Packet Data Unit (PDU) session establishment procedure 200 in a 5G network, comprising:

Step 1: the UE initiates a registration procedure, during which the network side allocates a 5G globally unique temporary UE identity (5G-GUTI, 5G Globally Unique Temporary UE Identity) to the UE.

Step 2, when the UE needs to send data, the UE requests to establish PDU session, the UE sends uplink NAS transmission information to the AMF, wherein the NAS transmission information carries PDU session Identification (ID), S-NSSAI, DNN, request type and PDU session establishment request information; the PDU session establishment request message further includes parameters such as PDU session ID, PDU session type, etc. The S-nsai identifies a network slice, the partitioning of which is mainly used for admission control, network selection and resource separation.

Step 3, AMF selects SMF according to S-NSSAI and DNN, and sends NSmf_PDUuse_ CreateSMcontext Request message to selected SMF, wherein the message carries PDU session ID, AMF ID and PDU session establishment request message.

Step 4, the smf obtains subscription data from the UDM, and the request message may carry S-NSSAI and DNN.

Step 5, the udm returns subscription data to the SMF, the subscription data including allowed PDU session types, default QoS parameters, etc.

Step 6, the smf sends a session management policy association request message to the PCF.

Step 7, the pcf returns a session management policy establishment association response message to the SMF, carrying default policy and charging control (PCC, policy and charging control rules) rules.

Step 8, the SMF returns an nsmf_pdu use_ CreateSMcontext Response message to the AMF, where the message carries an SMF index identifier (context ID).

Step 10, the smf selects the UPF and sends an N4 setup request message to the UPF, where the message carries the PDU session ID, the quality of service flow identifier (QoS flow ID) and the QoS parameters.

Step 11, the UPF returns an N4 setup response message, where the message carries the IP address and TEID allocated by the UPF.

Step 12, the SMF sends Namf_communication_N1N2Message Transfer to the AMF, the Message carries PDU session ID, PDU session establishment acceptance Message and N2-PDU session establishment request Message, and the PDU session establishment acceptance Message carries PDU session ID, qoS flow ID, qoS parameters and QoS rules; the N2-PDU session establishment request message carries the PDU session ID, qoS parameters, qoS flow ID, UPF assigned IP address and tunnel endpoint identifier (TEID, tunnel End Point identifier).

The amf forwards the N2-PDU session establishment request message to the 5G radio access network (NG-RAN, next Generation Radio Access Network), step 13.

Step 14, the NG-RAN carries out RRC reconfiguration; and carries NAS container-PDU session establishment accept messages.

In step 15, the ue returns an RRC reconfiguration complete message to the NG-RAN.

Step 16, the NG-RAN returns an N2-PDU session establishment acceptance message to the AMF, where the message carries the PDU session ID, the IP address assigned by the NG-RAN, and the TEID.

In step 17, the AMF forwards the N2-PDU session establishment acceptance to the SMF via an Nsmf_PDUs_ UpdateSMcontext Request message.

In step 18, the smf sends an N4 modification request message to the UPF, where the message carries the IP address and TEID allocated by the NG-RAN.

Step 19, the upf returns an N4 modification response message.

In step 20, the smf returns an nsmf_pdu use_ UpdateSMcontext Response message to the AMF.

In the PDU session establishment procedure, if the S-nsai and DNN requested by the UE in step 2 are not acceptable to the network, the network side returns a rejection message to the UE (the rejection message may be returned after step 2 or step 3). If a plurality of S-NSSAIs or DNNs of the UE are not suitable for being used in the NTN network, the UE can be refused by the network when requesting for a plurality of times, thus causing signaling waste.

In view of this, the embodiment of the present application proposes an access mode selection method, and fig. 3 is a schematic flowchart of an access mode selection method 300 according to the embodiment of the present application, and the method may alternatively be applied to the system shown in fig. 1, but is not limited thereto. The method includes at least some of the following.

S310: the terminal equipment receives access indication information in NTN from first network equipment;

s320: and the terminal equipment selects a corresponding access mode according to the access indication information.

The terminal equipment can select an access mode suitable for the NTN according to the access indication information in the NTN, so that multiple access requests are prevented from being refused by the network, and signaling waste in the session establishment process is reduced.

The access indication information proposed in the present disclosure may include at least two forms:

first, the access indication information includes at least one DNN applicable to the NTN;

second, the access indication information is used to indicate whether the PDU session is suitable for use in NTN.

The two forms are described in detail below in connection with the examples.

In one embodiment, the access indication information includes: at least one DNN suitable for NTN. The access indication information may be in the form of a DNN list (DNN list) comprising at least one DNN suitable for NTN. The terminal device may select one DNN from at least one DNN applicable to the NTN according to the access indication information, and initiate a PDU session establishment request using the selected DNN.

For example, in the step S102, the terminal device selects a corresponding access mode according to the access instruction information, including:

The terminal equipment determines a first DNN from at least one DNN applicable to the NTN;

the terminal device requests to establish a PDU session using the first DNN.

Alternatively, the first network device may be an AMF.

Example 1:

fig. 4 is a flowchart of an implementation of embodiment 1 of the present disclosure, in this embodiment, an example in which the first network device is an AMF is described. As shown in fig. 4, embodiment 1 of the present disclosure includes the steps of:

s401: the UE initiates a registration process, and sends a registration request message to the AMF, wherein the registration request message carries a user ID and a registration type.

S402: the AMF sends a Npcf access and mobile policy control setup request (Npcf AMPolicyControl Create Request) message to the PCF, carrying the subscriber permanent identifier (SUPI, subscription Permanent Identifier), access type, location information service network identity (e.g., public land mobile network identity (PLMN ID, public Land Mobile Network ID)), etc.

S403: the PCF sends an Npcf access and mobile policy control establishment response (npcf_ AMPolicyControl Create Response) message to the AMF, wherein the message carries policy information related to access and mobility management; at least one DNN applicable to the NTN network, such as a DNN list applicable to the NTN network, is carried in the access mobility management related policy information.

S404: the AMF carries the 5G-GUTI and the registration area in a registration accept message and carries at least one DNN applicable to the NTN network, such as a DNN list applicable to the NTN network, in the registration accept message.

S405: the UE returns a registration complete message to the AMF for confirming that the 5G-GUTI allocated in step S404 has been validated.

S406: the UE selects one DNN from at least one DNN applicable to the NTN network, such as selecting a first DNN from at least one DNN applicable to the NTN network; the UE sends an uplink NAS transmission message to the AMF, wherein the uplink NAS transmission message carries the first DNN and a PDU session establishment request message. The NAS transmission message can also carry PDU session identification, S-NSSAI and request type; the PDU session establishment request message further includes parameters such as PDU session ID, PDU session type, etc.

The steps performed thereafter are the same as steps 3 to 20 in fig. 2. In the registration process, the UE selects DNN suitable for the NTN network to request to establish the PDU session, so that the situation that the DNN carried in the PDU session establishment request is refused by the network due to the fact that the DNN is not suitable for the NTN is not detected, and the signaling waste can be avoided.

In another embodiment, the access indication information is used to indicate whether the PDU session is suitable for use in NTN. In particular, it may be indicated whether the PDU session to be established is suitable for use in NTN.

Correspondingly, the terminal device selecting the corresponding access mode according to the access indication information may include:

if the access indication information indicates that the PDU session is suitable for being used in the NTN, the terminal equipment initiates a PDU session establishment request;

alternatively, if the access indication information indicates that the PDU session is not suitable for use in the NTN, the terminal device does not initiate a PDU session establishment request.

Alternatively, the first network device may be an AMF.

Example 2:

fig. 5 is a flowchart of an implementation of embodiment 2 of the present disclosure, in this embodiment, an example in which the first network device is an AMF is described. As shown in fig. 5, embodiment 2 of the present disclosure includes the steps of:

s501: the UE initiates a registration process, and sends a registration request message to the AMF, wherein the registration request message carries a user ID and a registration type.

S502: the AMF sends a Npcf access and mobile policy control setup request (Npcf AMPolicyControl Create Request) message to the PCF, carrying the subscriber permanent identifier (SUPI, subscription Permanent Identifier), access type, location information service network identity (e.g., public land mobile network identity (PLMN ID, public Land Mobile Network ID)), etc.

S503: the PCF sends an Npcf access and mobile policy control setup response (Npcf AMPolicyControl Create Response) message to the AMF.

S504: the AMF carries the 5G-GUTI and the registration area in the registration accept message.

S505: the UE returns a registration complete message to the AMF for confirming that the 5G-GUTI allocated in step S504 has been validated.

S506: the PCF sends a UE Policy control update indication request (npcf_ UEPolicyControl UpdateNotify Request) message to the AMF, which carries UE Policy data (UE Policy) including a user equipment routing Policy (urs p, UE Route Selection Policy) rule, which may carry an indication parameter indicating whether the PDU session to be established by the UE is suitable for use in the NTN.

Table 1 is a content example of the urs rules.

TABLE 1

Table 2 is an example of the contents of a list of routing descriptors (RSD, route Selection Descriptors) in the urs rules.

TABLE 2

The embodiment carries an indication parameter in an RSD list in the urs rule, which is used to indicate the above access indication information, where the access indication information indicates whether the PDU session to be established by the UE is suitable for use in NTN, that is, indicates whether the PDU session to be established by the UE is suitable for access through a cellular network or access through an NTN network. If the PDU session to be established by the UE is indicated to be suitable for access through the cellular network, then the PDU session to be established on behalf of the UE is not suitable for use in the NTN; if the PDU session to be established by the UE is indicated to be suitable for access over the NTN, the PDU session to be established on behalf of the UE is suitable for use in the NTN.

S507: the AMF returns an npcf_ UEPolicyControl UpdateNotify Response message to the PCF.

S508: the AMF sends a downlink NAS transfer message to the UE, wherein the downlink NAS transfer message carries UE Policy data (UE Policy), and the UE Policy data carries URSP rules which carry the access indication information. The manner of carrying the access indication information in the urs rule is the same as that in step S506, that is, the urs rule includes an RSD list, and the RSD list carries the access indication information. As shown in table 2, the RSD list may specifically carry an indication parameter, which is used to indicate access indication information, where the access indication information indicates whether the PDU session to be established by the UE is suitable for use in NTN, that is, indicates whether the PDU session to be established by the UE is suitable for access through a cellular network or access through an NTN network.

S509: the UE returns an uplink NAS transfer message to the AMF, and is used for confirming successful receiving of the UE policy data;

s510: the AMF sends an npcf_ UEPolicyControl Update Request message to the PCF, and the message is used for confirming successful receiving of the UE policy data;

s511: the PCF returns an npcf_ UEPolicyControl Update Response message to the AMF.

S512: when the UE needs to send data, it is determined whether to initiate a PDU session establishment request according to the access indication information received in step S508. If the access indication information indicates that the PDU session to be established by the UE is suitable for use in NTN, the UE requests to establish the PDU session, specifically, the steps 2 to 20 shown in fig. 2 are not described herein. If the access indication information indicates that the PDU session to be established by the UE is not suitable for use in the NTN, the UE does not initiate a PDU session establishment request.

Since the UE can know whether the PDU session to be established is suitable for use in the NTN through the access indication information, if not, the UE does not initiate a PDU session establishment request in the NTN network, so that the problems of signaling rejection and unnecessary signaling overhead that may occur in the NTN can be avoided.

The present disclosure also proposes an information indication method, fig. 6 being a schematic flow chart of an information indication method 600 according to an embodiment of the present application, which may alternatively be applied to the system shown in fig. 1, but is not limited thereto. The method includes at least some of the following.

S610: the first network device sends access indication information in NTN to the terminal device, the access indication information is used for the terminal device to select a corresponding access mode.

Optionally, the access indication information includes: at least one DNN suitable for NTN.

Optionally, the first network device sends access indication information in NTN to a terminal device, including:

the first network device sends a registration accept message to the terminal device, the registration accept message carrying at least one DNN applicable to the NTN.

Optionally, the method further comprises: the first network device receives an access and mobile policy control setup response message from the second network device, the access and mobile policy control setup response message carrying at least one DNN applicable to the NTN.

Optionally, the access indication information indicates whether the PDU session is suitable for use in NTN.

the first network device sends a downlink NAS transfer message to the terminal device, wherein the downlink NAS transfer message carries UE policy data, the UE policy data carries URSP rules, and the URSP rules carry the access indication information.

Optionally, the method further comprises:

the first network device receives a UE policy control update indication request message from the second network device, the UE policy control update indication request message carrying UE policy data carrying a urs rule carrying the access indication information.

Optionally, the first network device includes an AMF.

Optionally, the second network device includes a policy control function PCF.

The present disclosure also proposes an information indication method, fig. 7 being a schematic flow chart of an information indication method 700 according to an embodiment of the present application, which may alternatively be applied to the system shown in fig. 1, but is not limited thereto. The method includes at least some of the following.

S710: the second network device sends access indication information in the NTN to the first network device, wherein the access indication information is used for the terminal device to select a corresponding access mode.

Optionally, the second network device sends access indication information in the NTN network to the first network device, including:

the second network device sends an access and mobile policy control setup response message to the first network device, the access and mobile policy control setup response message carrying the at least one DNN applicable to the NTN.

Optionally, the above access indication information indicates whether the PDU session to be established is suitable for use in NTN.

the second network device sends a UE policy control update indication request message to the first network device, wherein the UE policy control update indication request message carries UE policy data, the UE policy data carries URSP rules, and the URSP rules carry the access indication information.

Optionally, the first network device includes an AMF.

Optionally, the second network device includes a PCF.

The embodiment of the present application further proposes a terminal device, and fig. 8 is a schematic structural diagram of a terminal device 800 according to an embodiment of the present application, including:

A first receiving module 810, configured to receive, from a first network device, access indication information in a non-terrestrial network NTN;

and a selection module 820, configured to select a corresponding access mode according to the access indication information.

Optionally, the access indication information includes: at least one data network name DNN applicable to NTN.

Optionally, the selecting module 820 is configured to:

a first DNN is determined from at least one DNN applicable to the NTN, with which a request is made to establish a packet data unit, PDU, session.

Optionally, the first receiving module 810 is configured to:

a registration accept message is received from the first network device, the registration accept message carrying at least one data network name DNN applicable to the NTN.

Optionally, the selecting module 820 is configured to:

and sending a non-access stratum (NAS) transmission message to the first network equipment, wherein the NAS transmission message carries the first DNN and the PDU session establishment request message.

Optionally, the access indication information is used to indicate whether the PDU session is suitable for use in NTN.

Optionally, the selecting module 820 is configured to:

if the access indication information indicates that the PDU session is suitable for use in the NTN, a PDU session establishment request is initiated.

Optionally, the selecting module 820 is configured to:

If the access indication information indicates that the PDU session is not suitable for use in the NTN, a PDU session establishment request is not initiated.

Optionally, the first receiving module 810 is configured to:

and receiving a downlink NAS transfer message from the first network equipment, wherein the downlink NAS transfer message carries UE policy data, the UE policy data carries a user equipment routing policy URSP rule, and the URSP rule carries access indication information.

Optionally, the first network device includes an access and mobility management function AMF.

It should be understood that the foregoing and other operations and/or functions of the modules in the terminal device according to the embodiments of the present application are respectively for implementing the corresponding flow of the terminal device in the method 300 of fig. 3, and are not described herein for brevity.

The embodiment of the present application further proposes a first network device, and fig. 9 is a schematic structural diagram of a first network device 900 according to an embodiment of the present application, including:

a first sending module 910, configured to send, to a terminal device, access indication information in NTN, where the access indication information is used for the terminal device to select a corresponding access mode.

Optionally, the first sending module 910 is configured to:

A registration accept message is sent to the terminal device, the registration accept message carrying at least one DNN applicable to the NTN.

The embodiment of the present application further proposes another first network device, fig. 10 is a schematic structural diagram of a first network device 1000 according to an embodiment of the present application, and as shown in fig. 10, the first network device further includes:

a second receiving module 1020 is configured to receive an access and mobility policy control setup response message from the second network device, where the access and mobility policy control setup response message carries at least one DNN applicable to the NTN.

Optionally, the first sending module 910 is configured to:

and sending a downlink NAS transfer message to the terminal equipment, wherein the downlink NAS transfer message carries UE policy data, the UE policy data carries URSP rules, and the URSP rules carry access indication information.

Optionally, as shown in fig. 10, the first network device further includes:

the third receiving module 1030 is configured to receive a UE policy control update indication request message from the second network device, where the UE policy control update indication request message carries UE policy data, the UE policy data carries a urs rule, and the urs rule carries access indication information.

Optionally, the first network device includes an AMF.

Optionally, the second network device includes a policy control function PCF.

It should be appreciated that the foregoing and other operations and/or functions of the modules in the first network device according to the embodiments of the present application are respectively for implementing the corresponding flow of the first network device in the method 600 of fig. 6, and are not described herein for brevity.

The embodiment of the present application further proposes a second network device, and fig. 11 is a schematic structural diagram of a second network device 1100 according to an embodiment of the present application, including:

the second sending module 1110 is configured to send, to the first network device, access indication information in NTN, where the access indication information is used for the terminal device to select a corresponding access mode.

Optionally, the second sending module 1110 is configured to:

and sending an access and mobile policy control establishment response message to the first network device, wherein the access and mobile policy control establishment response message carries at least one DNN applicable to the NTN.

Optionally, the second sending module 1110 is configured to:

And sending a UE policy control update indication request message to the first network equipment, wherein the UE policy control update indication request message carries UE policy data, the UE policy data carries URSP rules, and the URSP rules carry access indication information.

Optionally, the first network device includes an AMF.

Optionally, the second network device includes a PCF.

It should be appreciated that the foregoing and other operations and/or functions of the modules in the second network device according to the embodiments of the present application are respectively for implementing the corresponding flow of the second network device in the method 700 of fig. 7, and are not described herein for brevity.

It should be noted that, regarding the functions described in the respective modules (sub-modules, units, or components, etc.) in the terminal device 800, the first network device 900, the first network device 1000, and the second network device 1100 in this embodiment of the present application, the functions may be implemented by different modules (sub-modules, units, or components, etc.), or may be implemented by the same module (sub-module, unit, component, etc.), for example, the first sending module and the second sending module may be different modules, or may be the same module, and all the functions thereof in this embodiment of the present application may be implemented. In addition, the transmitting module and the receiving module in the embodiments of the present application may be implemented by a transceiver of the device, and some or all of the remaining modules may be implemented by a processor of the device.

Fig. 12 is a schematic structural diagram of a communication device 1200 according to an embodiment of the present application. The communication device 1200 shown in fig. 12 comprises a processor 1210, which processor 1210 may call and run a computer program from a memory to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 12, the communication device 1200 may also include a memory 1220. Wherein the processor 1210 may call and run computer programs from the memory 1220 to implement the methods in embodiments of the present application.

The memory 1220 may be a separate device from the processor 1210, or may be integrated into the processor 1210.

Optionally, as shown in fig. 12, the communication device 1200 may further include a transceiver 1230, and the processor 1210 may control the transceiver 1230 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

Wherein the transceiver 1230 may include a transmitter and a receiver. The transceiver 1230 may further include antennas, the number of which may be one or more.

Optionally, the communication device 1200 may be a terminal device in the embodiment of the present application, and the communication device 1200 may implement a corresponding flow implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 1200 may be a first network device or a second network device in the embodiments of the present application, and the communication device 1200 may implement corresponding flows implemented by the first network device or the second network device in the methods in the embodiments of the present application, which are not described herein for brevity.

Fig. 13 is a schematic structural diagram of a chip 1300 according to an embodiment of the present application. The chip 1300 shown in fig. 13 includes a processor 1310, and the processor 1310 may call and execute a computer program from a memory to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 13, the chip 1300 may further include a memory 1320. Wherein the processor 1310 may call and run a computer program from the memory 1320 to implement the methods in embodiments of the present application.

Wherein the memory 1320 may be a separate device from the processor 1310 or may be integrated into the processor 1310.

Optionally, the chip 1300 may also include an input interface 1330. The processor 1310 may control the input interface 1330 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

Optionally, the chip 1300 may also include an output interface 1340. Wherein the processor 1310 may control the output interface 1340 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to a terminal device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the chip may be applied to a network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The processors mentioned above may be general purpose processors, digital signal processors (digital signal processor, DSP), off-the-shelf programmable gate arrays (field programmable gate array, FPGA), application specific integrated circuits (application specific integrated circuit, ASIC) or other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general-purpose processor mentioned above may be a microprocessor or any conventional processor.

The memory mentioned above may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM).

It should be understood that the above memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces, in whole or in part, a flow or function as described in embodiments of the present application. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), or the like.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

An access mode selection method, comprising:

the terminal equipment receives access indication information in a non-terrestrial network (NTN) from first network equipment;

and the terminal equipment selects a corresponding access mode according to the access indication information.
The method of claim 1, the access indication information comprising: at least one data network name DNN applicable to NTN.
The method of claim 2, wherein the terminal device selects a corresponding access mode according to the access indication information, and the method comprises:

the terminal equipment determines a first DNN from the at least one DNN applicable to the NTN;

the terminal device requests to establish a packet data unit, PDU, session using the first DNN.
A method according to claim 2 or 3, the terminal device receiving access indication information in the NTN from the first network device, comprising:

the terminal device receives a registration accept message from the first network device, said registration accept message carrying said at least one data network name DNN applicable to the NTN.
The method according to claim 3 or 4, wherein the terminal device requests to establish a PDU session using the first DNN, comprising:

and the terminal equipment sends a non-access stratum (NAS) transmission message to the first network equipment, wherein the NAS transmission message carries the first DNN and PDU session establishment request message.
The method of claim 1, the access indication information is used to indicate whether a PDU session is suitable for use in NTN.
The method of claim 6, wherein the terminal device selects a corresponding access mode according to the access indication information, and the method comprises:

The terminal device initiates a PDU session establishment request if the access indication information indicates that the PDU session is suitable for use in the NTN.
The method of claim 6, wherein the terminal device selects a corresponding access mode according to the access indication information, and the method comprises:

the terminal device does not initiate a PDU session establishment request if the access indication information indicates that the PDU session is not suitable for use in the NTN.
The method according to any of claims 6 to 8, the terminal device receiving access indication information in the NTN from the first network device, comprising:

the terminal equipment receives a downlink NAS transfer message from the first network equipment, wherein the downlink NAS transfer message carries UE policy data, the UE policy data carries a user equipment routing policy URSP rule, and the URSP rule carries the access indication information.
The method according to any of claims 1 to 9, the first network device comprising an access and mobility management function, AMF.
An information indication method, comprising:

the method comprises the steps that first network equipment sends access indication information in NTN to terminal equipment, wherein the access indication information is used for the terminal equipment to select a corresponding access mode.
The method of claim 11, the access indication information comprising: at least one DNN suitable for NTN.
The method of claim 12, the first network device sending access indication information in NTN to a terminal device, comprising:

the first network device sends a registration accept message to the terminal device, where the registration accept message carries the at least one DNN applicable to the NTN.
The method of claim 12 or 13, further comprising:

the first network device receives an access and mobility policy control setup response message from the second network device, the access and mobility policy control setup response message carrying the at least one DNN applicable to the NTN.
The method of claim 11, the access indication information indicates whether a PDU session is suitable for use in NTN.
The method of claim 15, the first network device sending access indication information in NTN to a terminal device, comprising:

the first network equipment sends a downlink NAS transfer message to the terminal equipment, wherein the downlink NAS transfer message carries UE policy data, the UE policy data carries URSP rules, and the URSP rules carry the access indication information.
The method of claim 15 or 16, further comprising:

the first network device receives a UE policy control update indication request message from the second network device, wherein the UE policy control update indication request message carries UE policy data, the UE policy data carries URSP rules, and the URSP rules carry the access indication information.
The method of any of claims 11 to 17, the first network device comprising an AMF.
The method according to any of claims 11 to 18, the second network device comprising a policy control function, PCF.
An information indication method, comprising:

the second network device sends access indication information in the NTN to the first network device, wherein the access indication information is used for the terminal device to select a corresponding access mode.
The method of claim 20, the access indication information comprising: at least one DNN suitable for NTN.
The method of claim 21, the second network device sending access indication information in the NTN network to the first network device, comprising:

the second network device sends an access and mobile policy control establishment response message to the first network device, wherein the access and mobile policy control establishment response message carries the at least one DNN applicable to the NTN.
The method of claim 20, the access indication information indicates whether a PDU session to be established is suitable for use in NTN.
The method of claim 23, the second network device sending access indication information in the NTN network to the first network device, comprising:

the second network equipment sends a UE strategy control update indication request message to the first network equipment, wherein the UE strategy control update indication request message carries UE strategy data, the UE strategy data carries URSP rules, and the URSP rules carry the access indication information.
The method of any of claims 20 to 24, the first network device comprising an AMF.
The method of any of claims 20 to 25, the second network device comprising a PCF.
A terminal device, comprising:

a first receiving module, configured to receive, from a first network device, access indication information in a non-terrestrial network NTN;

and the selection module is used for selecting a corresponding access mode according to the access indication information.
The terminal device of claim 27, the access indication information comprising: at least one data network name DNN applicable to NTN.
The terminal device of claim 28, the selection module is configured to:

Determining a first DNN from the at least one DNN applicable to the NTN, and requesting to establish a packet data unit PDU session by using the first DNN.
The terminal device of claim 28 or 29, the first receiving module is configured to:

a registration accept message is received from the first network device, the registration accept message carrying the at least one data network name DNN applicable to the NTN.
The terminal device according to claim 29 or 30, the selection module being configured to:

and sending a non-access stratum (NAS) transmission message to the first network equipment, wherein the NAS transmission message carries the first DNN and PDU session establishment request message.
The terminal device of claim 27, the access indication information is used to indicate whether a PDU session is suitable for use in NTN.
The terminal device of claim 32, the selection module is configured to:

and if the access indication information indicates that the PDU session is suitable for being used in the NTN, initiating a PDU session establishment request.
The terminal device of claim 32, the selection module is configured to:

if the access indication information indicates that the PDU session is not suitable for use in the NTN, a PDU session establishment request is not initiated.
The terminal device of any of claims 32 to 34, the first receiving module being configured to:

and receiving a downlink NAS transfer message from the first network equipment, wherein the downlink NAS transfer message carries UE policy data, the UE policy data carries a user equipment routing policy URSP rule, and the URSP rule carries the access indication information.
A terminal device according to any of claims 27 to 35, the first network device comprising an access and mobility management function, AMF.
A first network device, comprising:

the first sending module is used for sending access indication information in the NTN to the terminal equipment, wherein the access indication information is used for the terminal equipment to select a corresponding access mode.
The first network device of claim 37, the access indication information comprising: at least one DNN suitable for NTN.
The first network device of claim 38, the first transmitting module to:

and sending a registration acceptance message to the terminal equipment, wherein the registration acceptance message carries the at least one DNN applicable to the NTN.
The first network device of claim 38 or 39, further comprising:

and the second receiving module is used for receiving an access and mobile policy control establishment response message from the second network equipment, wherein the access and mobile policy control establishment response message carries the at least one DNN applicable to the NTN.
The first network device of claim 37, the access indication information indicates whether a PDU session is suitable for use in NTN.
The first network device of claim 41, the first transmitting module to:

and sending a downlink NAS transfer message to the terminal equipment, wherein the downlink NAS transfer message carries UE policy data, the UE policy data carries URSP rules, and the URSP rules carry the access indication information.
The first network device of claim 41 or 42, further comprising:

and the third receiving module is used for receiving a UE policy control update indication request message from the second network equipment, wherein the UE policy control update indication request message carries UE policy data, the UE policy data carries URSP rules, and the URSP rules carry the access indication information.
The first network device of any one of claims 37 to 43, comprising an AMF.
The first network device of any of claims 37 to 44, said second network device comprising a policy control function PCF.
A second network device, comprising:

and the second sending module is used for sending access indication information in the NTN to the first network equipment, wherein the access indication information is used for the terminal equipment to select a corresponding access mode.
The second network device of claim 46, the access indication information comprising: at least one DNN suitable for NTN.
The second network device of claim 47, the second transmitting module to:

and sending an access and mobile policy control establishment response message to the first network equipment, wherein the access and mobile policy control establishment response message carries the at least one DNN applicable to the NTN.
The second network device of claim 46, wherein the access indication information indicates whether a PDU session to be established is suitable for use in NTN.
The second network device of claim 49, the second transmitting module to:

and sending a UE policy control update indication request message to the first network equipment, wherein the UE policy control update indication request message carries UE policy data, the UE policy data carries URSP rules, and the URSP rules carry the access indication information.
The second network device of any of claims 46 to 50, the first network device comprising an AMF.
A second network device according to any of claims 46 to 51, comprising a PCF.
A terminal device, comprising: a processor, a memory and a transceiver, the memory being for storing a computer program, the processor being for invoking and running the computer program stored in the memory and controlling the transceiver to perform the method of any of claims 1 to 10.
A network device, comprising: a processor, a memory and a transceiver, the memory being for storing a computer program, the processor being for invoking and running the computer program stored in the memory and controlling the transceiver to perform the method of any of claims 11 to 26.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 10.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 11 to 26.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 10.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 11 to 26.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 10.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 11 to 26.
A computer program which causes a computer to perform the method of any one of claims 1 to 10.
A computer program which causes a computer to perform the method of any one of claims 11 to 26.