CN116420380A

CN116420380A - Identification determining method, indication method, device, communication equipment and storage medium

Info

Publication number: CN116420380A
Application number: CN202180074688.6A
Authority: CN
Inventors: 卢飞; 王淑坤; 郭雅莉
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2023-07-11
Also published as: WO2022151484A1

Abstract

The application discloses an identification determining method, an indication device, communication equipment and a storage medium, and relates to the field of wireless communication. The method is applied to the terminal equipment and comprises the following steps: a first TMGI including a NID is determined, the first TMGI being used for a procedure for the terminal device to perform a multicast service operation in an SNPN. In the embodiment of the present application, the TMGI used in the SNPN is a first TMGI, and the NID is introduced into the format of the first TMGI, so that the first TMGI may uniquely correspond to the SNPN, and an implementation manner of the format of the TMGI is provided.

Description

Identification determining method, indication method, device, communication equipment and storage medium

Technical Field

The present disclosure relates to the field of wireless communications, and in particular, to an identification determining method, an indication method, an apparatus, a communication device, and a storage medium.

Background

The wireless communication system supports multicast broadcast services (Multicast and Broadcast Service, MBS), including multicast services (i.e., multicast services).

In order to receive data corresponding to the multicast service, the terminal device generally needs to perform a procedure of requesting the multicast service. In the process that the terminal device executes the multicast service request, the terminal device needs to provide a temporary mobile group identifier (Temporary Mobile Group Identity, TMGI) for the network device to request to join the multicast service corresponding to the TMGI.

Disclosure of Invention

The embodiment of the application provides an identification determining method, an indicating device, a communication device and a storage medium, wherein a TMGI used in a Non-Public Network (SNPN) of independent networking is a first TMGI, and a Network identification (Network Identifier, NID) is introduced into a format of the first TMGI. The technical scheme is as follows:

according to one aspect of the present application, there is provided an identification determining method, applied to a terminal device, the method including:

a first TMGI including a NID is determined, the first TMGI being used for a procedure for the terminal device to perform a multicast service operation in an SNPN.

According to one aspect of the present application, there is provided an identification indication method, applied to a network device, the method including:

and sending indication information to the terminal equipment, wherein the indication information is used for the terminal equipment to determine a first TMGI comprising NID, and the first TMGI is used for the terminal equipment to execute the multicast service operation process in SNPN.

According to an aspect of the present application, there is provided an identification determining apparatus, applied to a terminal device, the apparatus including: an identification determination module;

the identification determining module is configured to determine a first TMGI including a NID, where the first TMGI is used for the terminal device to perform a multicast service operation in an SNPN.

According to an aspect of the present application, there is provided an identification indication apparatus, for use in a network device, the apparatus comprising: the identification indication module;

the identification indication module is configured to send indication information to a terminal device, where the indication information is used for the terminal device to determine a first TMGI including a NID, and the first TMGI is used for the terminal device to execute a multicast service operation procedure in an SNPN.

According to an aspect of the present application, there is provided a terminal device comprising: a processor and a transceiver coupled to the processor; wherein,

the processor is configured to determine a first TMGI including a NID, where the first TMGI is used for the terminal device to perform a multicast service operation in an SNPN.

According to one aspect of the present application, there is provided a network device comprising: a processor and a transceiver coupled to the processor; wherein,

the transceiver is configured to send indication information to a terminal device, where the indication information is used for the terminal device to determine a first TMGI including a NID, and the first TMGI is used for the terminal device to perform a procedure of multicast service operation in an SNPN.

According to an aspect of the present application, there is provided a computer-readable storage medium having stored therein executable instructions that are loaded and executed by a processor to implement the identification determination method, or the identification indication method, as described in the above aspect.

According to an aspect of the embodiments of the present application, there is provided a chip including programmable logic circuits and/or program instructions for implementing the identification determination method or the identification indication method described in the above aspect when the chip is run on a computer device.

According to an aspect of the present application, there is provided a computer program product which, when run on a processor of a computer device, causes the computer device to perform the identification determination method, or the identification indication method, as described in the above aspect.

The technical scheme provided by the embodiment of the application at least comprises the following beneficial effects:

in the case of providing a multicast service in an SNPN, the TMGI used in the SNPN is a first TMGI, and the NID is introduced into the format of the first TMGI, so that the first TMGI may uniquely correspond to the SNPN, and an implementation manner of the format of the TMGI is provided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an MBS system architecture provided by an exemplary embodiment of the subject application;

fig. 2 is a flowchart of a procedure for requesting a multicast service and establishing the multicast service by a terminal device according to an exemplary embodiment of the present application;

fig. 3 is a schematic diagram of a format of a TMGI provided in an exemplary embodiment of the present application;

FIG. 4 is a flowchart of an identification determination method provided by an exemplary embodiment of the present application;

FIG. 5 is a schematic diagram of a format of a NID provided by an exemplary embodiment of the present application;

fig. 6 is a schematic diagram of a format of a first TMGI provided in an exemplary embodiment of the present application;

fig. 7 is a schematic diagram of a format of a first TMGI provided in an exemplary embodiment of the present application;

fig. 8 is a schematic diagram of a format of a first TMGI provided in an exemplary embodiment of the present application;

Fig. 9 is a schematic diagram of a format of a first TMGI provided in an exemplary embodiment of the present application;

FIG. 10 is a flowchart of an identification determination method provided by an exemplary embodiment of the present application;

FIG. 11 is a flow chart of a network device providing an equivalent NID to a terminal device provided in one exemplary embodiment of the present application;

FIG. 12 is a flow chart of a network device providing an equivalent NID to a terminal device provided in one exemplary embodiment of the present application;

FIG. 13 is a flow chart of a network device providing an equivalent NID to a terminal device provided in one exemplary embodiment of the present application;

FIG. 14 is a flow chart of a network device providing an equivalent NID to a terminal device provided in one exemplary embodiment of the present application;

FIG. 15 is a flowchart of an identification determination method provided by an exemplary embodiment of the present application;

fig. 16 is a flowchart of a network device providing a first TMGI or a mapping relationship between the first TMGI and a conventional TMGI to a terminal device according to an exemplary embodiment of the present application;

fig. 17 is a flowchart of a network device providing a first TMGI or a mapping relationship between the first TMGI and a conventional TMGI to a terminal device according to an exemplary embodiment of the present application;

FIG. 18 is a block diagram of an identification determination device provided in an exemplary embodiment of the present application;

FIG. 19 is a block diagram of an identification pointing device according to an exemplary embodiment of the present application;

fig. 20 is a schematic structural diagram of a communication device according to an exemplary embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of an MBS system architecture according to an exemplary embodiment of the present application.

As shown in fig. 1, in the MBS system architecture, existing network elements in the current conventional 5G architecture are included: an application function (Application Function, AF)/an application service (Application Server, AS); a network open function (Network Exposure Function, NEF); a policy control function (Policy Control Function, PCF); access and mobility management functions (Access and Mobility management Function, AMF); session management functions (Session Management Function, SMF); user plane functions (User plane function, UPF); a radio access network (Radio Access Network, RAN).

Meanwhile, compared with the conventional 5G architecture, the MBS system architecture introduces the following network elements: multicast Broadcast-user plane function (Multicast/Broadcast-UPF, MB-UPF); multicast Broadcast-session management function (Multicast/Broadcast-SMF, MB-SMF); multicast broadcast service user plane (Multicast/Broadcast Service User Plane, MBSU); multicast broadcast service entity (Multicast/Broadcast Service Function, MBSF).

The MBS system architecture includes a terminal Equipment (UE), which may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, and various forms of User Equipment, mobile Station (MS), terminal (terminal device), etc. For convenience of description, the above-mentioned devices are collectively referred to as terminal devices. In the MBS system architecture, the terminal equipment and the RAN may be connected through a Uu interface.

As shown in fig. 1, a point-to-multipoint transmission mechanism is introduced into the system, the network side can transmit downlink data in a point-to-multipoint transmission mode in a multicast service area, and terminal equipment in the area can receive data by using a multicast channel.

In the MBS system architecture as shown in fig. 1, transmission of multicast services may be implemented. Referring to fig. 2 in combination, a flowchart of a procedure for requesting a multicast service and establishing the multicast service by a terminal device according to an exemplary embodiment of the present application is shown.

In step 201, the user databases (User Data Repository, UDR), MB-SMF, MB-UPF and MBSF perform a multicast group configuration (i.e., multicast configuration) procedure.

In this step, reference is made to fig. 8.2.3-2 in TR 23.757, and the embodiment of the present application will not be described herein.

Step 202, the terminal device performs a registration procedure and a Packet Data Unit (PDU) session establishment procedure.

In the registration process, the terminal device needs to inform the AMF that it has multicast capability. Accordingly, during PDU session establishment, the AMF needs to select a multicast-capable SMF.

Optionally, the terminal device performs a PDU session establishment procedure according to the data network name (Data Network Name, DNN), single network slice selection assistance information (Single-Network Slice Selection Assistance Information, S-nsai).

In step 203, the Content Provider (i.e., content Provider) performs multicast advertisement.

The corresponding notification message of the multicast notification may include a TMGI; a multicast address (IP multicastaddress) may also be included.

In step 204, the terminal device initiates a PDU session modification procedure.

In order to join the multicast service, the terminal device sends a PDU session modification request message to the AMF, where the PDU session modification request message carries a multicast address or TMGI.

In step 205, the AMF sends an Nsmf_PDUSion_UpdateSMContext message to the SMF.

Optionally, the nsmf_pduse_updatsmcontext message carries a session management context identifier (i.e. SM context ID) and a PDU session modification request message sent by the terminal device through the PDU session modification procedure in step 204.

At step 206, the smf performs a multicast session check.

The SMF needs to check to the UDR whether the terminal device is capable of using the multicast service and request acquisition of the multicast broadcast-session management function identification (i.e., MB-SMF ID).

In step 207, the udr returns the MB-SMF ID to the SMF.

In step 208, the SMF sends a multicast quality of service (Quality of Service, qoS) request message to the MB-SMF.

After the SMF acquires the MB-SMF ID, the multicast QoS request message is sent to the MB-SMF corresponding to the MB-SMF ID.

In step 209, the mb-SMF returns a multicast QoS response message to the SMF.

The multicast QoS response message comprises a QoS message corresponding to the multicast QoS flow.

At step 210, the smf sends a namf_n1n2messagetransfer message to the AMF.

The Namf_N1N2MessageTransfermessage carries N2 SM information and N1 SM container.

The N2 SM information includes: PDU Session identification (i.e., PDU Session ID), multicast context identification (i.e., multicast Context ID), multicast group identification (TMGI or multicast address), MB-SMF ID, multicast QoS flow information (QoS flow identification and corresponding QoS message).

The N1 SM container includes: PDU session modification command message (i.e., PDU Session Modification Command message). The PDU Session Modification Command message includes: PDU Session ID and multicast information. The multicast information comprises the following detailed contents: multicast Context ID, multicast QoS flow information and multicast address.

If the SMF is configured to support the unicast fallback mechanism, the SMF also needs to provide a correspondence between the unicast QoS flow and the multicast QoS flow in the N2 SM information and the N1 SM container.

The amf sends an N2 session request message to the RAN, step 211.

The N2 session message carries the content in the N2 SM information in step 210 and the content in the N1 SM container.

Optionally, after receiving the N2 session request message, the RAN determines whether a group resource has been allocated based on the multicast group identifier in the N2 session request message; if not, the RAN also needs to perform allocation of group resources.

Step 212, the ran sends a PDU session modification response to the terminal device.

The RAN performs radio resource control (Radio Resource Control, RRC) resource reconfiguration and forwards the N1 SMcontainer to the terminal device.

In step 213, the ran sends a multicast transmission request message to the AMF.

The multicast sending request message carries MB-SMF ID and multicast group identification.

If the RAN uses unicast to receive multicast traffic, the RAN allocates a downlink user plane GPRS tunneling protocol (GPRS Tunneling Protocol for the User plane, GTP-U) tunnel endpoint identification (Tunnel Endpoint Identifier, TEID) and a downlink IP address and carries it to the AMF in a multicast send request message.

In step 214, the amf selects an MB-SMF according to the MB-SMF ID in the multicast transmission request message, and transmits the multicast transmission request message to the selected MB-SMF.

The multicast transmission request message carries the multicast group indication, the downlink GTP-U TEID and the downlink IP address allocated in step 213.

Step 215, if the multicast transmission request message in step 213 and step 214 carries the downlink GTP-U TEID and the downlink IP address, the MB-SMF transmits an N4 session modification request message to the MB-UPF.

The N4 session modification request message carries a downlink GTP-U TEID and a downlink IP address.

The MB-UPF sends an N4 session modification response message to the MB-SMF, step 216.

In step 217, the mb-SMF returns a multicast send response message to the AMF.

In step 218, the amf returns a multicast send response message to the RAN.

At step 219, the ran returns an N2 session response message to the AMF.

In step 220, the AMF sends an Nsmf_PDUSion_UpdateSMContext message to the SMF.

Alternatively, the SMF uses a shared tunnel to transport multicast traffic, so no interaction with the UPF is required.

In step 221, the MB-UPF receives multicast data from a content provider or MBF-U.

The mb-UPF sends multicast data to the RAN, step 222.

In step 223, the ran sends the multicast data to the terminal device.

Optionally, the RAN sends the multicast data To the terminal device using a Point-To-Point (PTP) manner or a Point-To-multipoint (Point To Multipoint, PTM) manner.

When the terminal device requests to join the multicast service, the terminal device needs to provide the TMGI to the network, as shown in step 206. In the related art, the format of the TMGI is shown in fig. 3, and the TMGI includes the following three parts:

a) Multimedia broadcast and multicast Service (MBMS, multimedia Broadcast Multicast Service) Service identification (i.e., MBMS Service ID): consists of 6-bit numbers. The MBMS Service ID is used to uniquely identify the MBMS bearer Service within the public land mobile network (Public Land Mobile Network, PLMN).

b) Mobile country code (Mobile Country Code, MCC): consists of three digits. The MCC is used to uniquely identify the country to which the terminal device belongs.

c) Mobile network code (Mobile Network Code, MNC): consists of two or three digits. The MNC is used to identify the PLMN to which the terminal device belongs. Whether the MNC is two or three digits in length depends on the value of the MCC.

In the embodiment of the present application, the TMGI as shown in fig. 3 may be denoted as a conventional TMGI.

With the development of communication technology, a Non-Public Network (NPN), which is a Network that provides services only to specific users, is introduced. The NPN can realize end-to-end resource isolation, provides a special access network for the vertical industry, ensures independent resource sharing of clients in the vertical industry, and meets the requirements of enterprises, factories, schools and the like on reliable and stable private networks.

NPN mainly comprises two types:

(1) An independent networking non-public network (SNPN), which is independent of the PLMN, is operated independently by the SNPN operator.

(2) Public network integrated non-public networks (Public Network Integrated-NPN, PNI-NPN) that are dependent on the PLMN network, operated by a legacy PLMN operator, are carried by the PLMN or as slices of the PLMN.

In the SNPN, what the format of the TMGI used by the terminal device is, the embodiment of the present application will exemplarily describe.

Fig. 4 shows a flowchart of an identification determination method provided in an exemplary embodiment of the present application. The method can be applied to the MBS system architecture shown in figure 1, and comprises the following steps:

in step 410, the terminal device determines a first TMGI including a NID, where the first TMGI is used for a procedure of the terminal device to perform a multicast service operation in the SNPN.

The standard defines: in the SNPN, the SNPN can be identified through PLMN identification and NID. That is, the network identification of the SNPN includes the PLMN identification and the NID. Illustratively, the format of the NID is shown in fig. 5, where the NID includes 11 digits, 1 of which is the assignment pattern and the remaining 10 digits are NID values.

In the embodiment of the present application, the TMGI used in the SNPN is a first TMGI, and the first TMGI includes a NID, so that the first TMGI may uniquely correspond to the SNPN. Illustratively, the format of the NID in the first TMGI is shown in fig. 5. Optionally, the NID in the first TMGI is a complete NID, or the NID in the first TMGI is a truncated NID.

Optionally, the first TMGI further includes a conventional TMGI, where the conventional TMGI is a TMGI used in a non-SNPN. Optionally, the conventional TMGI includes: MBMS Service ID, MCC and MNC. The format of the conventional TMGI is shown in fig. 3, and will not be described in detail herein. Optionally, the regular TMGI in the first TMGI is a complete regular TMGI or the regular TMGI in the first TMGI is a truncated regular TMGI.

Illustratively, the format of the first TMGI is shown in fig. 6. The 11-bit NID is located after the conventional TMGI, which includes: a MBMS Service ID of 6 bits, an MCC of 3 bits and an MNC of 2 or 3 bits.

In summary, in the method provided in the embodiment, in the case of providing the multicast service in the SNPN, the TMGI used in the SNPN is the first TMGI, and the NID is introduced into the format of the first TMGI, so that the first TMGI may uniquely correspond to the SNPN, and an implementation manner of the format of the TMGI is provided.

Since the NID is introduced into the first TMGI and the number of bits of the NID is large, as shown in fig. 5, the NID includes 11 bits, which results in a significant increase in the format length of the first TMGI, thereby increasing the transmission overhead of the first TMGI.

In an alternative embodiment based on fig. 4, at least one of the NID in the first TMGI and the conventional TMGI is truncated, thereby reducing the format length of the first TMGI and reducing the transmission overhead of the first TMGI.

The format of the first TMGI exists in the following 3 different implementations.

(1) The first TMGI includes: equivalent NID and conventional TMGI.

Wherein, the equivalent NID is the NID after the NID is truncated.

The NID after truncation refers to: the equivalent NID is a succession of a bits in the original NID, a being a positive integer less than the number of bits of the original NID. Illustratively, the equivalent NID is the lower a-bit in the original NID.

Illustratively, referring to fig. 7 in combination, the equivalent NIDs of the conventional TMGI and the a-bit are included in the first TMGI. The conventional TMGI includes: a MBMS Service ID of 6 bits, an MCC of 3 bits and an MNC of 2 or 3 bits.

(2) The first TMGI includes: equivalent NID and equivalent TMGI.

Wherein, the equivalent NID is the NID after the NID is truncated, and the equivalent TMGI is the TMGI after the conventional TMGI is truncated.

The NID after truncation refers to: the equivalent NID is a succession of a bits in the original NID, a being a positive integer less than the number of bits of the original NID. The truncated TMGI refers to: the equivalent TMGI is a consecutive b bits in the conventional TMGI, b being a positive integer less than the number of bits of the conventional TMGI. Illustratively, the equivalent NID is the lower a-bit in the original NID. Illustratively, the equivalent TMGI is the low b bit in the conventional TMGI.

Illustratively, referring to fig. 8 in combination, an equivalent TMGI for the b-bit and an equivalent NID for the a-bit are included in the first TMGI.

(3) The first TMGI includes: NID and equivalent TMGI.

Wherein, the equivalent TMGI is the TMGI after the conventional TMGI is truncated.

The truncated TMGI refers to: the equivalent TMGI is a consecutive b bits in the conventional TMGI, b being a positive integer less than the number of bits of the conventional TMGI. Illustratively, the equivalent TMGI is the low b bit in the conventional TMGI.

Illustratively, referring to fig. 9 in combination, an equivalent TMGI for the b-bit and an equivalent NID for the 11-bit are included in the first TMGI.

In one possible implementation, the terminal device receives the equivalent NID of the network device configuration and constructs the first TMGI as shown in fig. 7 based on the equivalent NID.

Fig. 10 shows a flowchart of an identification determination method provided in an exemplary embodiment of the present application. The method can be applied to the MBS system architecture shown in figure 1, and comprises the following steps:

In step 1010, the network device sends a first indication, the first indication carrying an equivalent NID.

Wherein the equivalent NID is used for the terminal device to construct the first TMGI.

Alternatively, step 1010 is alternatively implemented as: the RAN sends a broadcast message carrying the equivalent NID. Optionally, the broadcast message includes a system information block (System Information Block, SIB).

Alternatively, step 1010 is alternatively implemented as: the RAN sends an RRC message that carries the equivalent NID. Optionally, the RRC message includes: at least one of an RRC release message and an RRC reconfiguration message.

Alternatively, step 1010 is alternatively implemented as: the AMF sends a registration accept message that carries the equivalent NID.

Alternatively, step 1010 is alternatively implemented as: the SMF sends a PDU session establishment accept message that carries the equivalent NID.

In step 1020, the terminal device receives the first indication information.

Wherein the first indication information carries an equivalent NID.

Optionally, the first indication information includes: broadcast messages broadcast by the RAN; or, an RRC message sent by the RAN; or, the registration acceptance message sent by the AMF; or, the PDU session establishment acceptance message sent by the SMF.

In step 1030, the terminal device constructs a first TMGI based on the equivalent NID.

After receiving the first indication information, the terminal equipment constructs a first TMGI based on the equivalent NID carried in the first indication information and the locally determined conventional TMGI.

Optionally, after the terminal device adds the equivalent NID to the regular TMGI, the terminal device constructs the first TMGI. Illustratively, as shown in fig. 7, in the first TMGI, the equivalent NID follows the conventional TMGI. It is to be understood that the present embodiments are not limited in this regard as equivalent NIDs may be added to the conventional TMGI before.

In summary, in the method provided in this embodiment, the network device (including RAN, AMF and SMF) provides the truncated equivalent NID to the terminal device, and the terminal device constructs the truncated first TMGI according to the equivalent NID, so as to reduce transmission overhead of the first TMGI.

Illustratively, referring to fig. 11 below in combination with the equivalent NID carried in the sib message, the network device providing the equivalent NID to the terminal device includes the steps of:

in step 111, the ran broadcasts the equivalent NID in the SIB.

Wherein the equivalent NID may be some of the lower digits of the NID.

The terminal device constructs a new first TMGI (as shown in fig. 7) based on the equivalent NID in the SIB, and subsequent interactions between the terminal device and the network may be performed using the truncated first TMGI.

Illustratively, referring to fig. 12 below in combination with the equivalent NID carried in the rrc message, the network device providing the equivalent NID to the terminal device includes the steps of:

in step 121, an RRC connection is established between the terminal device and the RAN.

In step 122, the ran sends a security mode command message to the terminal device (security mode command).

Step 123, the terminal device returns a security mode complete message to the RAN (security mode complete).

Through the above steps 122 and 123, an access stratum security connection is established between the ran and the terminal device.

In step 124, the ran sends an RRC message to the terminal device, where the RRC message carries the equivalent NID.

After the establishment of the secure connection between the terminal equipment and the RAN is completed, the RAN sends an RRC message to the terminal equipment, wherein the RRC message comprises an RRC release message or an RRC reconfiguration message, and the RRC message carries an equivalent NID.

Wherein the equivalent NID may be some of the lower digits of the NID.

The terminal device constructs a new first TMGI based on the equivalent NID in the RRC message (as shown in fig. 7), and subsequent interactions between the terminal device and the network may be performed using the truncated first TMGI.

Illustratively, referring to fig. 13 below in combination, the mobility management message carrying an equivalent NID, the network device providing the equivalent NID to the terminal device comprises the steps of:

In step 131, the terminal device sends a registration request message to the AMF.

Optionally, the registration request message carries a registration type and a terminal device identifier.

In step 132, an authentication procedure is performed between the terminal device and the AMF.

Optionally, a bidirectional authentication is performed between the terminal device and the AMF, and an authentication vector (Authentication Vector) is generated.

In step 133, the amf sends a security mode command message to the terminal device.

In step 134, the terminal device returns a security mode complete message to the AMF.

Through the steps 133 and 134, the amf establishes an access layer security connection with the terminal device.

In step 135, the amf sends a registration accept message to the terminal device, where the registration accept message carries the equivalent NID.

After the establishment of the secure connection between the terminal equipment and the AMF is completed, the AMF sends a registration acceptance message to the terminal equipment. The equivalent NID in the registration accept message may be some few of the low order bits of the NID. The terminal device constructs a new first TMGI based on the equivalent NID in the registration accept message (as shown in fig. 7), and subsequent interactions between the terminal device and the network may be performed using the truncated first TMGI.

Optionally, the registration accept message also carries a list of globally unique temporary UE identities (Globally Unique Temporary UE Identity, GUTI) and tracking area identities (Tracking Area Identity, TAI).

In step 136, the terminal device returns a registration completion message to the AMF.

Illustratively, referring to fig. 14 below in combination, the session management message carrying an equivalent NID, the network device providing the equivalent NID to the terminal device comprises the steps of:

in step 141, a registration procedure is performed between the terminal device and the network.

Optionally, the AMF allocates a GUTI and TAI list to the terminal device during the registration process.

In step 142, the terminal device sends a PDU session establishment request message to the SMF via the AMF.

Optionally, the PDU session identifier and the IP type are carried in the PDU session establishment request message.

Step 143, the smf returns a PDU session establishment accept message to the terminal device, where the PDU session establishment accept message carries the equivalent NID.

The equivalent NID in the PDU session establishment accept message may be some few of the low order bits of the NID. The terminal device constructs a new first TMGI (as shown in fig. 7) based on the equivalent NID in the PDU session establishment accept message, and subsequent interactions between the terminal device and the network may be performed using the truncated first TMGI.

Optionally, the PDU session establishment acceptance message further carries at least one of the following information: PDU session identification, qoS parameters and QoS rules.

In one possible implementation, the terminal device receives the first TMGI configured by the network device or a mapping relationship between the first TMGI and the conventional TMGI, and the format of the first TMGI may be as shown in fig. 7, fig. 8, or fig. 9.

Fig. 15 shows a flowchart of an identification determination method provided in an exemplary embodiment of the present application. The method can be applied to the MBS system architecture shown in figure 1, and comprises the following steps:

in step 1510, the network device sends second indication information, where the second indication information carries the first TMGI or carries a mapping relationship between the first TMGI and the conventional TMGI.

In one possible implementation, the second indication information carries the first TMGI. In another possible implementation, the second indication information carries a mapping relationship between the first TMGI and the regular TMGI.

Optionally, step 1510 is alternatively implemented as: the AMF sends a registration acceptance message, wherein the registration acceptance message carries the first TMGI or the mapping relation between the first TMGI and the conventional TMGI.

Optionally, step 1510 is alternatively implemented as: the SMF sends a PDU session establishment acceptance message carrying the first TMGI or carrying the mapping relation between the first TMGI and the conventional TMGI.

In step 1520, the terminal device receives the second indication information.

The second indication information carries the first TMGI or carries a mapping relationship between the first TMGI and the conventional TMGI. Optionally, the second indication information includes: registration acceptance message sent by AMF; or, the PDU session establishment acceptance message sent by the SMF.

The terminal device will perform any one of steps 1530 and 1540 to determine the first TMGI.

In step 1530, the terminal device determines the first TMGI based on the first TMGI carried by the second indication information.

In step 1540, the terminal device determines the first TMGI based on a mapping relationship between the first TMGI carried by the second indication information and the conventional TMGI.

Because the terminal equipment obtains the mapping relation between the first TMGI and the conventional TMGI through the second indication information, when the first TMGI is used between the terminal equipment and the network, the terminal equipment and the network can associate the multicast service corresponding to the first TMGI and the conventional TMGI.

In this embodiment, at least one of the NID in the first TMGI and the regular TMGI is truncated. That is, the first TMGI includes: equivalent NID and conventional TMGI; or, equivalent NID and equivalent TMGI; or NID and equivalent TMGI.

Alternatively, in the first TMGI, the equivalent NID is located after the conventional TMGI, as shown in fig. 7. Alternatively, in the first TMGI, the equivalent NID is located after the equivalent TMGI, as shown in fig. 8. Alternatively, in the first TMGI, the NID is located after the equivalent TMGI, as shown in fig. 9. It may be appreciated that other implementation forms of the above-mentioned positional relationship of the information in the first TMGI may exist, which is not limited in the embodiment of the present application.

In summary, in the method provided in this embodiment, the network device (including AMF and SMF) provides the truncated first TMGI to the terminal device or provides the mapping relationship between the first TMGI and the conventional TMGI, and the terminal device and the network interact with each other by using the truncated first TMGI, so as to reduce the transmission overhead of the first TMGI.

For example, referring to fig. 16 below in combination, the mobility management message carries a first TMGI or a mapping relationship between the first TMGI and a conventional TMGI, and the network device provides the terminal device with the first TMGI or the mapping relationship between the first TMGI and the conventional TMGI, which includes the following steps:

in step 161, the terminal device sends a registration request message to the AMF.

Step 162, an authentication procedure is performed between the terminal device and the AMF.

Optionally, bidirectional authentication is performed between the terminal device and the AMF, and an authentication vector is generated.

The amf sends a security mode command message to the terminal device, step 163.

In step 164, the terminal device returns a security mode complete message to the AMF.

Through the steps 163 and 164, the amf establishes an access layer security connection with the terminal device.

In step 165, the amf sends a registration accept message to the terminal device, where the registration accept message carries the first TMGI or a mapping relationship between the first TMGI and the conventional TMGI.

After the establishment of the secure connection between the terminal equipment and the AMF is completed, the AMF sends a registration acceptance message to the terminal equipment. The format of the first TMGI in the registration accept message may be as shown in fig. 7 or fig. 8 or fig. 9, and subsequent interactions between the terminal device and the network may be performed using the truncated first TMGI.

Optionally, the registration accept message also carries GUTI and TAI lists.

In step 166, the terminal device returns a registration completion message to the AMF.

For example, referring to fig. 17 below in combination, the session management message carries a first TMGI or a mapping relationship between the first TMGI and a conventional TMGI, and the network device provides the terminal device with the first TMGI or the mapping relationship between the first TMGI and the conventional TMGI, which includes the following steps:

in step 171, a registration procedure is performed between the terminal device and the network.

In step 172, the terminal device sends a PDU session establishment request message to the SMF via the AMF.

In step 173, the smf returns a PDU session establishment accept message to the terminal device, where the PDU session establishment accept message carries the first TMGI or a mapping relationship between the first TMGI and the conventional TMGI.

The format of the first TMGI in the PDU session establishment accept message may be as shown in fig. 7 or fig. 8 or fig. 9, and subsequent interactions between the terminal device and the network may be performed using the truncated first TMGI.

The above method embodiments may be implemented individually or in combination, and the present application is not limited thereto.

In the above-described respective embodiments, the steps performed by the terminal device may be individually implemented as the identification determination method on the terminal device side, and the steps performed by the network device may be individually implemented as the identification indication method on the network device side.

Fig. 18 shows a block diagram of an identification determining apparatus provided in an exemplary embodiment of the present application, which may be implemented as a terminal device or as a part of a terminal device, the apparatus comprising: an identification determination module 1801;

The identifier determining module 1801 is configured to determine a first TMGI including a NID, where the first TMGI is used for the terminal device to perform a multicast service operation in an SNPN.

In an alternative embodiment, at least one of the NID and regular TMGI in the first TMGI is truncated.

In an alternative embodiment, the first TMGI includes: an equivalent NID and the regular TMGI, the equivalent NID being a NID after the NID has been truncated.

In an alternative embodiment, the first TMGI includes: an equivalent NID and an equivalent TMGI, wherein the equivalent NID is the NID after the NID is truncated, and the equivalent TMGI is the TMGI after the conventional TMGI is truncated.

In an alternative embodiment, the first TMGI includes: the NID and the equivalent TMGI, wherein the equivalent TMGI is a TMGI obtained by truncating the conventional TMGI.

In an alternative embodiment, the identifier determining module 1801 is configured to receive first indication information, where the first indication information carries the equivalent NID; the first TMGI is constructed based on the equivalent NID.

In an alternative embodiment, the first indication information comprises a broadcast message broadcast by the RAN.

In an alternative embodiment, the first indication information includes an RRC message sent by the RAN.

In an alternative embodiment, the first indication information includes a registration accept message sent by the AMF.

In an alternative embodiment, the first indication information includes a PDU session establishment accept message sent by the SMF.

In an alternative embodiment, the identification determination module 1801 is configured to construct the first TMGI after adding the equivalent NID to the regular TMGI.

In an alternative embodiment, the identifier determining module 1801 is configured to receive second indication information, where the second indication information carries the first TMGI; determining the first TMGI;

or alternatively, the first and second heat exchangers may be,

the identifier determining module 1801 is configured to receive second indication information, where the second indication information carries a mapping relationship between the first TMGI and the conventional TMGI; and determining the first TMGI based on the mapping relation.

In an alternative embodiment, the second indication information includes a registration accept message sent by the AMF.

In an alternative embodiment, the second indication information includes a PDU session establishment accept message sent by the SMF.

In an alternative embodiment, in the first TMGI, the equivalent NID is located after the regular TMGI; or, in the first TMGI, the equivalent NID is located after the equivalent TMGI; or, in the first TMGI, the NID is located after the equivalent TMGI.

Fig. 19 is a block diagram of an identification indication apparatus according to an exemplary embodiment of the present application, where the apparatus may be implemented as a network device or as a part of a network device, and the apparatus includes: an identification indication module 1901;

the identification indication module 1901 is configured to send indication information to a terminal device, where the indication information is used for the terminal device to determine a first TMGI including a NID, and the first TMGI is used for the terminal device to perform a multicast service operation procedure in an SNPN.

In an alternative embodiment, the indication information includes first indication information, where the first indication information carries the equivalent NID, and the equivalent NID is used for the terminal device to construct the first TMGI.

In an alternative embodiment, the identification indication module 1901 is configured to send a broadcast message to the RAN.

In an alternative embodiment, the identifier indicates module 1901 is configured to send an RRC message to the RAN.

In an alternative embodiment, the identification indication module 1901 is configured to send a registration accept message to the AMF.

In an alternative embodiment, the identifier indicates module 1901 is configured for the SMF to send a PDU session establishment accept message.

In an alternative embodiment, in the first TMGI constructed by the terminal device, the equivalent NID is located after the regular TMGI.

In an alternative embodiment, the indication information includes second indication information, where the second indication information carries the first TMGI or carries a mapping relationship between the first TMGI and the conventional TMGI.

Fig. 20 shows a schematic structural diagram of a communication device (terminal device or network device) according to an exemplary embodiment of the present application, where the communication device includes: a processor 101, a receiver 102, a transmitter 103, a memory 104, and a bus 105.

The processor 101 includes one or more processing cores, and the processor 101 executes various functional applications and information processing by running software programs and modules.

The receiver 102 and the transmitter 103 may be implemented as one communication component, which may be a communication chip.

The memory 104 is connected to the processor 101 via a bus 105.

The memory 104 may be used to store at least one instruction that the processor 101 is configured to execute to implement the various steps of the method embodiments described above.

Further, the memory 104 may be implemented by any type of volatile or nonvolatile storage device or combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable Read-Only Memory (EEPROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), static random access Memory (Static Random Access Memory, SRAM), read-Only Memory (ROM), magnetic Memory, flash Memory, programmable Read-Only Memory (Programmable Read-Only Memory, PROM).

When the communication device is implemented as a terminal device, the processor and the transceiver in the communication device according to the embodiments of the present application may execute steps executed by the terminal device in any of the methods shown in fig. 4 to 17, which are not described herein.

In one possible implementation, when the communication device is implemented as a terminal device,

When the communication device is implemented as a network device, the processor and the transceiver in the communication device according to the embodiments of the present application may execute the steps executed by the network device in any of the methods shown in fig. 4 to 17, which are not described herein again.

In one possible implementation, when the communication device is implemented as a network device,

In an exemplary embodiment, there is also provided a computer readable storage medium having stored therein at least one instruction, at least one program, a code set, or an instruction set, which is loaded and executed by a processor to implement the identification determination method performed by a communication device or the identification indication method provided by the above respective method embodiments.

In an exemplary embodiment, a chip is also provided, which includes programmable logic circuits and/or program instructions for implementing the identification determination method, or the identification indication method, described in the above aspects when the chip is run on a computer device.

In an exemplary embodiment, a computer program product is also provided, which, when run on a processor of a computer device, causes the computer device to perform the identification determination method, or the identification indication method, as described in the above aspects.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

The foregoing description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, since it is intended that all modifications, equivalents, improvements, etc. that fall within the spirit and scope of the invention.

Claims

An identification determining method, which is characterized by being applied to a terminal device, the method comprising:

a first temporary mobile group identity, TMGI, comprising a network identity, NID, is determined, said first TMGI being used for a procedure for said terminal device to perform multicast service operations in an independently networked non-public network, SNPN.
The method of claim 1, wherein the step of determining the position of the substrate comprises,

at least one of the NID and regular TMGI in the first TMGI is truncated.
The method of claim 2, wherein the step of determining the position of the substrate comprises,

the first TMGI includes: an equivalent NID and the regular TMGI, the equivalent NID being a NID after the NID has been truncated.
The method of claim 2, wherein the step of determining the position of the substrate comprises,

the first TMGI includes: an equivalent NID and an equivalent TMGI, wherein the equivalent NID is the NID after the NID is truncated, and the equivalent TMGI is the TMGI after the conventional TMGI is truncated.
The method of claim 2, wherein the step of determining the position of the substrate comprises,

the first TMGI includes: the NID and the equivalent TMGI, wherein the equivalent TMGI is a TMGI obtained by truncating the conventional TMGI.
The method of claim 3, wherein the determining the first TMGI including the NID comprises:

receiving first indication information, wherein the first indication information carries the equivalent NID;

the first TMGI is constructed based on the equivalent NID.
The method of claim 6, wherein the step of providing the first layer comprises,

the first indication information comprises a broadcast message broadcast by the radio access network RAN.
The method of claim 6, wherein the step of providing the first layer comprises,

the first indication information includes a radio resource control RRC message sent by the RAN.
The method of claim 6, wherein the step of providing the first layer comprises,

the first indication information includes a registration acceptance message sent by the access and mobility management AMF.
The method of claim 6, wherein the step of providing the first layer comprises,

the first indication information comprises a packet data unit PDU session establishment accept message sent by the session management function SMF.
The method according to any of claims 6 to 10, wherein said constructing said first TMGI based on said equivalent NID comprises:

after adding the equivalent NID to the regular TMGI, the first TMGI is constructed.
The method of any of claims 3-5, wherein the determining the first TMGI including the NID comprises:

receiving second indication information, wherein the second indication information carries the first TMGI; determining the first TMGI;

or alternatively, the first and second heat exchangers may be,

receiving second indication information, wherein the second indication information carries a mapping relation between the first TMGI and the conventional TMGI; and determining the first TMGI based on the mapping relation.
The method of claim 12, wherein the step of determining the position of the probe is performed,

the second indication information includes a registration acceptance message sent by the AMF.
The method of claim 12, wherein the step of determining the position of the probe is performed,

the second indication information includes a PDU session establishment acceptance message sent by the SMF.
The method according to any one of claims 12 to 14, wherein,

in the first TMGI, the equivalent NID is located after the regular TMGI;

or alternatively, the first and second heat exchangers may be,

in the first TMGI, the equivalent NID is located after the equivalent TMGI;

or alternatively, the first and second heat exchangers may be,

in the first TMGI, the NID is located after the equivalent TMGI.
An identification indication method, characterized in that it is applied in a network device, the method comprising:

and sending indication information to the terminal equipment, wherein the indication information is used for the terminal equipment to determine a first Temporary Mobile Group Identifier (TMGI) comprising a Network Identifier (NID), and the first TMGI is used for the terminal equipment to execute a multicast service operation process in an independent networking non-public network (SNPN).
The method of claim 16, wherein the step of determining the position of the probe comprises,

at least one of the NID and regular TMGI in the first TMGI is truncated.
The method of claim 17, wherein the step of determining the position of the probe is performed,

the first TMGI includes: an equivalent NID and the regular TMGI, the equivalent NID being a NID after the NID has been truncated.
The method of claim 17, wherein the step of determining the position of the probe is performed,

the first TMGI includes: an equivalent NID and an equivalent TMGI, wherein the equivalent NID is the NID after the NID is truncated, and the equivalent TMGI is the TMGI after the conventional TMGI is truncated.
The method of claim 17, wherein the step of determining the position of the probe is performed,

the first TMGI includes: the NID and the equivalent TMGI, wherein the equivalent TMGI is a TMGI obtained by truncating the conventional TMGI.
The method of claim 18, wherein the step of providing the first information comprises,

the indication information includes first indication information, where the first indication information carries the equivalent NID, and the equivalent NID is used for the terminal device to construct the first TMGI.
The method of claim 21, wherein the sending the indication information to the terminal device comprises:

the radio access network RAN sends the broadcast message.
The method of claim 21, wherein the sending the indication information to the terminal device comprises:

The RAN sends a radio resource control RRC message.
The method of claim 21, wherein the sending the indication information to the terminal device comprises:

the access and mobility management AMF sends a registration accept message.
The method of claim 21, wherein the sending the indication information to the terminal device comprises:

the session management function SMF sends a packet data unit PDU session establishment accept message.
The method according to any one of claims 20 to 25, wherein,

in the first TMGI constructed by the terminal device, the equivalent NID is located after the regular TMGI.
The method according to any one of claims 18 to 20, wherein,

the indication information comprises second indication information, wherein the second indication information carries the first TMGI or carries a mapping relation between the first TMGI and the conventional TMGI.
The method of claim 27, wherein the sending the indication information to the terminal device comprises:

the AMF sends a registration accept message.
The method of claim 27, wherein the sending the indication information to the terminal device comprises:

The SMF sends a PDU session establishment accept message.
The method according to any one of claims 27 to 29, wherein,

in the first TMGI, the equivalent NID is located after the regular TMGI;

or alternatively, the first and second heat exchangers may be,

in the first TMGI, the equivalent NID is located after the equivalent TMGI;

or alternatively, the first and second heat exchangers may be,

in the first TMGI, the NID is located after the equivalent TMGI.
An identification determining apparatus, characterized in that it is applied in a terminal device, the apparatus comprising: an identification determination module;

the identification determining module is configured to determine a first temporary mobile group identity TMGI including a network identification NID, where the first TMGI is used for the terminal device to perform a multicast service operation in an independently networked non-public network SNPN.
The apparatus of claim 31, wherein the device comprises a plurality of sensors,

at least one of the NID and regular TMGI in the first TMGI is truncated.
The apparatus of claim 32, wherein the device comprises a plurality of sensors,

the first TMGI includes: an equivalent NID and the regular TMGI, the equivalent NID being a NID after the NID has been truncated.
The apparatus of claim 32, wherein the device comprises a plurality of sensors,

The first TMGI includes: an equivalent NID and an equivalent TMGI, wherein the equivalent NID is the NID after the NID is truncated, and the equivalent TMGI is the TMGI after the conventional TMGI is truncated.
The apparatus of claim 32, wherein the device comprises a plurality of sensors,

the first TMGI includes: the NID and the equivalent TMGI, wherein the equivalent TMGI is a TMGI obtained by truncating the conventional TMGI.
The apparatus of claim 33, wherein the means for determining the identity is configured to,

receiving first indication information, wherein the first indication information carries the equivalent NID;

the first TMGI is constructed based on the equivalent NID.
The apparatus of claim 36, wherein the device comprises a plurality of sensors,

the first indication information comprises a broadcast message broadcast by the radio access network RAN.
The apparatus of claim 36, wherein the device comprises a plurality of sensors,

the first indication information includes a radio resource control RRC message sent by the RAN.
The apparatus of claim 36, wherein the device comprises a plurality of sensors,

the first indication information includes a registration acceptance message sent by the access and mobility management AMF.
The apparatus of claim 36, wherein the device comprises a plurality of sensors,

The first indication information comprises a packet data unit PDU session establishment accept message sent by the session management function SMF.
The apparatus of any one of claims 36 to 40, wherein,

the identification determining module is configured to construct the first TMGI after adding the equivalent NID to the regular TMGI.
The apparatus according to any one of claims 33 to 35, wherein,

the identification determining module is configured to receive second indication information, where the second indication information carries the first TMGI; determining the first TMGI;

or alternatively, the first and second heat exchangers may be,

the identification determining module is configured to receive second indication information, where the second indication information carries a mapping relationship between the first TMGI and the conventional TMGI; and determining the first TMGI based on the mapping relation.
The apparatus of claim 42, wherein the device comprises,

the second indication information includes a registration acceptance message sent by the AMF.
The apparatus of claim 42, wherein the device comprises,

the second indication information includes a PDU session establishment acceptance message sent by the SMF.
The apparatus of any one of claims 42 to 44, wherein,

in the first TMGI, the equivalent NID is located after the regular TMGI;

Or alternatively, the first and second heat exchangers may be,

in the first TMGI, the equivalent NID is located after the equivalent TMGI;

or alternatively, the first and second heat exchangers may be,

in the first TMGI, the NID is located after the equivalent TMGI.
An identification indication device, characterized in that it is applied in a network device, said device comprising: the identification indication module;

the identification indication module is configured to send indication information to a terminal device, where the indication information is used for the terminal device to determine a first temporary mobile group identifier TMGI including a network identifier NID, and the first TMGI is used for the terminal device to execute a multicast service operation procedure in an independent networking non-public network SNPN.
The apparatus of claim 46, wherein the device comprises,

at least one of the NID and regular TMGI in the first TMGI is truncated.
The apparatus of claim 47, wherein the device comprises,

the first TMGI includes: an equivalent NID and the regular TMGI, the equivalent NID being a NID after the NID has been truncated.
The apparatus of claim 47, wherein the device comprises,

the first TMGI includes: an equivalent NID and an equivalent TMGI, wherein the equivalent NID is the NID after the NID is truncated, and the equivalent TMGI is the TMGI after the conventional TMGI is truncated.
The apparatus of claim 47, wherein the device comprises,

the first TMGI includes: the NID and the equivalent TMGI, wherein the equivalent TMGI is a TMGI obtained by truncating the conventional TMGI.
The apparatus of claim 48, wherein the device comprises,

the indication information includes first indication information, where the first indication information carries the equivalent NID, and the equivalent NID is used for the terminal device to construct the first TMGI.
The apparatus of claim 51, wherein the device comprises,

the identification indication module is used for the radio access network RAN to send the broadcast message.
The apparatus of claim 51, wherein the device comprises,

the identification indication module is configured to send a radio resource control RRC message by the RAN.
The apparatus of claim 51, wherein the device comprises,

the identification indication module is used for sending a registration acceptance message by the access and mobility management AMF.
The apparatus of claim 51, wherein the device comprises,

the identification indication module is configured to send a packet data unit PDU session establishment acceptance message to the session management function SMF.
The apparatus of any one of claims 50 to 55, wherein,

In the first TMGI constructed by the terminal device, the equivalent NID is located after the regular TMGI.
The apparatus of any one of claims 48 to 50, wherein,

the indication information comprises second indication information, wherein the second indication information carries the first TMGI or carries a mapping relation between the first TMGI and the conventional TMGI.
The apparatus of claim 57, wherein the device comprises,

the identification indication module is used for the AMF to send a registration acceptance message.
The apparatus of claim 57, wherein the device comprises,

the identification indication module is used for the SMF to send PDU session establishment acceptance message.
The apparatus of any one of claims 57 to 59, wherein,

in the first TMGI, the equivalent NID is located after the regular TMGI;

or alternatively, the first and second heat exchangers may be,

in the first TMGI, the equivalent NID is located after the equivalent TMGI;

or alternatively, the first and second heat exchangers may be,

in the first TMGI, the NID is located after the equivalent TMGI.
A terminal device, characterized in that the terminal device comprises: a processor and a transceiver coupled to the processor; wherein,

the processor is configured to determine a first temporary mobile group identity TMGI including a network identity NID, where the first TMGI is used for a procedure of the terminal device to perform a multicast service operation in an independently networked non-public network SNPN.
A network device, the network device comprising: a processor and a transceiver coupled to the processor; wherein,

the transceiver is configured to send indication information to a terminal device, where the indication information is used for the terminal device to determine a first temporary mobile group identifier TMGI including a network identifier NID, and the first TMGI is used for the terminal device to perform a multicast service operation in an independently networked non-public network SNPN.
A computer readable storage medium having stored therein executable instructions that are loaded and executed by a processor to implement the identification determination method, or the identification indication method, of any of claims 1 to 30.