WO2022151484A1

WO2022151484A1 - Identity determination method and apparatus, identity indication method and apparatus, and communication device and storage medium

Info

Publication number: WO2022151484A1
Application number: PCT/CN2021/072544
Authority: WO
Inventors: 卢飞; 王淑坤; 郭雅莉
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2022-07-21
Also published as: CN116420380A

Abstract

The present application relates to the field of wireless communications. Disclosed are an identity determination method and apparatus, an identity indication method and apparatus, and a communication device and a storage medium. The identity determination method is applied to a terminal device, and comprises: determining a first TMGI comprising an NID, wherein the first TMGI is used by a terminal device to execute a multicast service operation process in an SNPN. In the embodiments of the present application, a TMGI used in an SNPN is a first TMGI, and an NID is introduced into the format of the first TMGI, such that the first TMGI can uniquely correspond to the SNPN, and an implementation method for the format of a TMGI is provided.

Description

Identification determination method, indication method, device, communication device and storage medium

technical field

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

Background technique

The wireless communication system supports a multicast broadcast service (Multicast and Broadcast Service, MBS), and the MBS includes a multicast service (ie, a multicast service).

In order to receive data corresponding to a multicast service, a terminal device generally needs to perform a process of requesting a multicast service. In the process of requesting a multicast service by a terminal device, the terminal device needs to provide a Temporary Mobile Group Identity (TMGI) to the network device to request to join the multicast service corresponding to the TMGI.

SUMMARY OF THE INVENTION

The embodiments of the present application provide an identification determination method, an indication method, an apparatus, a communication device, and a storage medium. The TMGI used in the stand-alone non-public network (SNPN) is the first TMGI, and the third A Network Identifier (NID) is introduced in the format of a TMGI. The technical solution is as follows:

According to an aspect of the present application, a method for determining an identity is provided, which is applied to a terminal device, and the method includes:

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

According to an aspect of the present application, an identification indication method is provided, which is applied to a network device, and the method includes:

Sending indication information to the terminal equipment, where the indication information is used for the terminal equipment to determine the first TMGI including the NID, and the first TMGI is used for the terminal equipment to perform a process of a multicast service operation in the SNPN.

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

The identity determination module is configured to determine the first TMGI including the NID, and the first TMGI is used for the terminal device to perform a process of multicast service operation in the SNPN.

According to an aspect of the present application, there is provided an identification indicating device, which is applied to a network device, the device comprising: an identification indicating module;

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

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

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

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

The transceiver is configured to send indication information to the terminal device, where the indication information is used for the terminal device to determine the first TMGI including the NID, and the first TMGI is used for the terminal device to perform grouping in the SNPN. The process of broadcasting service operation.

According to an aspect of the present application, a computer-readable storage medium is provided, and executable instructions are stored in the readable storage medium, and the executable instructions are loaded and executed by a processor to implement the identification according to the above aspect. Determine the method, or, identify the indicating method.

According to an aspect of the embodiments of the present application, a chip is provided, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on a computer device, it is used to implement the identification determination described in the above aspect method, or, identifies the indicated method.

According to one aspect of the present application, there is provided a computer program product, which, when running on a processor of a computer device, enables the computer device to execute the identification determination method or the identification indication method described in the above aspects.

The technical solutions provided by the embodiments of the present application include at least the following beneficial effects:

In the case of providing multicast services 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 can uniquely correspond to the SNPN, providing a TMGI implementation of the format.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

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

2 is a flowchart of a process for a terminal device to request a multicast service and a process for establishing a multicast service provided by an exemplary embodiment of the present application;

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

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

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

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

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

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

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

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

FIG. 11 is a flowchart of a network device providing an equivalent NID to a terminal device provided by an exemplary embodiment of the present application;

FIG. 12 is a flowchart of a network device providing an equivalent NID to a terminal device provided by an exemplary embodiment of the present application;

FIG. 13 is a flowchart of a network device providing an equivalent NID to a terminal device provided by an exemplary embodiment of the present application;

FIG. 14 is a flowchart of a network device providing an equivalent NID to a terminal device provided by an 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;

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 provided by an exemplary embodiment of the present application;

17 is a flow chart of a network device providing a first TMGI or a mapping relationship between the first TMGI and a conventional TMGI to a terminal device provided by an exemplary embodiment of the present application;

FIG. 18 is a structural block diagram of an apparatus for identifying identification provided by an exemplary embodiment of the present application;

19 is a structural block diagram of an identification indicating device provided by an exemplary embodiment of the present application;

FIG. 20 is a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

FIG. 1 shows a schematic diagram of an MBS system architecture provided by an exemplary embodiment of the present application.

As shown in Figure 1, the MBS system architecture includes existing network elements in the current conventional 5G architecture: application function (Application Function, AF)/application service (Application Server, AS); network open function (Network Exposure Function, NEF); Policy Control Function (PCF); Access and Mobility management Function (AMF); Session Management Function (Session Management Function, SMF); User plane function (User plane function, UPF); 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-UPF) -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 terminal equipment (User Equipment, UE). The terminal equipment can include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various User equipment in the form of mobile station (Mobile Station, MS), terminal (terminal device) and so on. For the convenience of description, the devices mentioned above are collectively referred to as terminal devices. In the MBS system architecture, the terminal equipment and the RAN can be connected through the Uu interface.

As shown in Figure 1, a point-to-multipoint transmission mechanism is introduced into the system. The network side can use point-to-multipoint transmission to send downlink data in the area of multicast services. Terminal devices in this area can use multicast channels. Receive data.

In the MBS system architecture shown in FIG. 1 , the transmission of multicast services can be realized. Referring to FIG. 2 , it shows a flowchart of a process for a terminal device to request a multicast service and to establish a multicast service provided by an exemplary embodiment of the present application.

Step 201, a user database (User Data Repository, UDR), MB-SMF, MB-UPF and MBSF perform a multicast group configuration (ie, multicast configuration) process.

Wherein, for this step, reference may be made to Figure 8.2.3-2 in TR 23.757, which is not repeated in this embodiment of the present application.

Step 202, the terminal device performs a registration process and a packet data unit (Packet Data Unit, PDU) session establishment process.

During the registration process, the terminal device needs to inform the AMF that it has the multicast capability. Correspondingly, in the process of establishing a PDU session, the AMF needs to select an SMF capable of multicasting.

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

Step 203, the content provider (ie, the Content Provider) performs multicast announcement.

The announcement message corresponding to the multicast announcement may include TMGI; it may also include a multicast address (IP multicastaddress).

Step 204, the terminal device initiates a PDU session modification process.

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

Step 205, the AMF sends an Nsmf_PDUSession_UpdateSMContext message to the SMF.

Optionally, the Nsmf_PDUSession_UpdateSMContext message carries the session management context identifier (ie, the SM context ID) and the PDU session modification request message sent by the terminal device through the PDU session modification process in step 204.

Step 206, the SMF checks the multicast session.

The SMF needs to check with the UDR whether the terminal device can use the multicast service, and request to obtain the multicast broadcast-session management function identifier (that is, the MB-SMF ID).

Step 207, the UDR returns the MB-SMF ID to the SMF.

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

After obtaining the MB-SMF ID, the SMF sends a multicast QoS request message to the MB-SMF corresponding to the MB-SMF ID.

Step 209, the MB-SMF returns a multicast QoS response message to the SMF.

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

Step 210, the SMF sends a Namf_N1N2MessageTransfer message to the AMF.

Among them, the Namf_N1N2MessageTransfer message carries N2 SM information and N1 SM container.

N2 SM information includes: PDU session ID (ie PDU Session ID), multicast context ID (ie Multicast Context ID), multicast group ID (TMGI or multicast address), MB-SMF ID, multicast QoS flow information (QoS Flow ID and corresponding QoS message).

The N1 SM container includes: PDU Session Modification Command message (ie, PDU Session Modification Command message). The PDU Session Modification Command message includes: PDU Session ID and multicast information. The details of multicast information include: 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 the corresponding relationship between the unicast QoS flow and the multicast QoS flow in the N2 SM information and the N1 SM container.

Step 211, the AMF sends an N2 session request message to the RAN.

Wherein, 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 will determine whether group resources have been allocated based on the multicast group identifier in the N2 session request message; if not, the RAN also needs to allocate group resources.

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

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

Step 213, the RAN sends a multicast sending request message to the AMF.

Wherein, the multicast sending request message carries the MB-SMF ID and the multicast group identifier.

If the RAN uses unicast to receive multicast services, the RAN allocates the downlink GPRS Tunneling Protocol for the User plane (GTP-U) tunnel endpoint identifier (Tunnel Endpoint Identifier, TEID) and downlink IP address, and in the group It is carried to the AMF in the broadcast sending request message.

Step 214, the AMF selects an MB-SMF according to the MB-SMF ID in the multicast sending request message, and sends a multicast sending request message to the selected MB-SMF.

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

Step 215, if the multicast sending request messages in steps 213 and 214 carry the downlink GTP-U TEID and the downlink IP address, the MB-SMF sends an N4 session modification request message to the MB-UPF.

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

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

Step 217, the MB-SMF returns a multicast sending response message to the AMF.

Step 218, the AMF returns a multicast sending response message to the RAN.

Step 219, the RAN returns an N2 session response message to the AMF.

Step 220, the AMF sends a Nsmf_PDUSession_UpdateSMContext message to the SMF.

Optionally, the SMF uses a shared tunnel to transmit multicast services, and therefore does not need to interact with the UPF.

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

Step 222, the MB-UPF sends multicast data to the RAN.

Step 223, the RAN sends multicast data to the terminal device.

Optionally, the RAN sends multicast data to the terminal device in a point-to-point (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 TMGI to the network, as shown in step 206 . In the related art, the format of TMGI is shown in Figure 3, and TMGI includes the following three parts:

a) Multimedia Broadcast and Multicast Service (MBMS, Multimedia Broadcast Multicast Service) service identification (ie MBMS Service ID): composed of 6 digits. The MBMS Service ID is used to uniquely identify the MBMS bearer service in the Public Land Mobile Network (PLMN).

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

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

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

With the development of communication technology, a Non-Public Network (NPN) has been introduced, and NPN is a network that only provides services for specific users. NPN can achieve end-to-end resource isolation, provide dedicated access networks for vertical industries, ensure exclusive access to customer resources in vertical industries, and meet the needs of some enterprises, factories, schools, etc. for reliable and stable private networks.

NPN mainly includes the following two types:

(1) Non-public network (Standalone NPN, SNPN) with independent networking, this type of NPN does not depend on PLMN and is independently operated by SNPN operators.

(2) Public network integrated non-public network (Public Network Integrated-NPN, PNI-NPN). This type of NPN depends on the PLMN network and is operated by traditional PLMN operators. This type of NPN is carried by the PLMN or used as a slice of the PLMN.

In the SNPN, what is the format of the TMGI used by the terminal device, which will be exemplarily described in this embodiment of the present application.

FIG. 4 shows a flowchart of an identification determination method provided by an exemplary embodiment of the present application. The method can be applied to the MBS system architecture shown in FIG. 1 , and the method includes:

Step 410, the terminal device determines the first TMGI including the NID, and the first TMGI is used for the terminal device to perform a process of multicast service operation in the SNPN.

The standard defines: in the SNPN, the SNPN can be identified through the PLMN identification and NID. That is, the network identity of the SNPN includes the PLMN identity and the NID. Exemplarily, the format of the NID is shown in FIG. 5 . The NID includes 11 digits, of which 1 digit is the allocation mode, and the remaining 10 digits are the NID value.

In this embodiment of the present application, the TMGI used in the SNPN is the first TMGI, and the first TMGI includes the NID, so that the first TMGI may uniquely correspond to the SNPN. Exemplarily, 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 regular TMGI, and the regular TMGI is the TMGI used in the non-SNPN. Optionally, the conventional TMGI includes: MBMS Service ID, MCC and MNC. Exemplarily, the format of the conventional TMGI is shown in FIG. 3 , and details are not described here. Optionally, the regular TMGI in the first TMGI is a full regular TMGI, or the regular TMGI in the first TMGI is a truncated regular TMGI.

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

To sum up, in the method provided in this embodiment, when the SNPN provides multicast services, 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 can The only one corresponding to the SNPN provides an implementation of the TMGI format.

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

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

There are three different implementation schemes for the format of the first TMGI as follows.

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

The equivalent NID is the NID after the NID is truncated.

The truncated NID refers to: the equivalent NID is consecutive a bits in the original NID, and a is a positive integer smaller than the number of bits of the original NID. Exemplarily, the equivalent NID is the lower a bits in the original NID.

Illustratively, with reference to FIG. 7 , the regular TMGI and the equivalent NID of the a-bit are included in the first TMGI. Conventional TMGI includes: 6-digit MBMS Service ID, 3-digit MCC, and 2 or 3-digit MNC.

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

The equivalent NID is the NID obtained by truncating the NID, and the equivalent TMGI is the TMGI obtained by truncating the conventional TMGI.

The truncated NID refers to: the equivalent NID is consecutive a bits in the original NID, and a is a positive integer smaller than the number of bits of the original NID. The truncated TMGI refers to: the equivalent TMGI is consecutive b bits in the conventional TMGI, where b is a positive integer smaller than the number of bits of the conventional TMGI. Exemplarily, the equivalent NID is the lower a bits in the original NID. Exemplarily, the equivalent TMGI is the lower b bits in conventional TMGI.

Exemplarily, with reference to FIG. 8 , the first TMGI includes a b-bit equivalent TMGI and a a-bit equivalent NID.

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

The equivalent TMGI is the truncated TMGI of the conventional TMGI.

The truncated TMGI refers to: the equivalent TMGI is consecutive b bits in the conventional TMGI, where b is a positive integer smaller than the number of bits of the conventional TMGI. Exemplarily, the equivalent TMGI is the lower b bits in conventional TMGI.

Exemplarily, with reference to FIG. 9 , a b-bit equivalent TMGI and an 11-bit equivalent NID are included in the first TMGI.

In a possible implementation manner, the terminal device receives the equivalent NID configured by the network device, and constructs the first TMGI shown in FIG. 7 according to the equivalent NID.

FIG. 10 shows a flowchart of an identification determination method provided by an exemplary embodiment of the present application. The method can be applied to the MBS system architecture shown in FIG. 1 , and the method includes:

Step 1010: The network device sends first indication information, where the first indication information carries an equivalent NID.

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

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

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

Optionally, step 1010 is alternatively implemented as: the AMF sends a registration acceptance message, and the registration acceptance message carries the equivalent NID.

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

Step 1020, the terminal device receives the first indication information.

The first indication information carries an equivalent NID.

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

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

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

Optionally, the terminal device constructs the first TMGI after adding the equivalent NID to the regular TMGI. Exemplarily, as shown in Figure 7, in the first TMGI, the equivalent NID follows the regular TMGI. It can be understood that, the equivalent NID may also be added before the conventional TMGI, which is not limited in this embodiment of the present application.

To sum up, in the method provided in this embodiment, the network device (including the RAN, AMF, and SMF) provides a truncated equivalent NID to the terminal device, and the terminal device constructs a truncated first TMGI according to the equivalent NID, thereby reducing the Transmission overhead of the first TMGI.

Exemplarily, referring to Figure 11 below, the SIB message carries the equivalent NID, and the network device provides the equivalent NID to the terminal device, including the following steps:

Step 111, the RAN broadcasts the equivalent NID in the SIB.

The equivalent NID may be some of the lower bits of the NID.

The terminal device constructs a new first TMGI (as shown in FIG. 7 ) according to the equivalent NID in the SIB, and subsequent interactions between the terminal device and the network can be performed using the truncated first TMGI.

Exemplarily, referring to Figure 12 below, the RRC message carries the equivalent NID, and the network device provides the equivalent NID to the terminal device, including the following steps:

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

Step 122, the RAN sends a security mode command message (security mode command) to the terminal device.

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

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

Step 124, the RAN sends an RRC message to the terminal equipment, and the RRC message carries the equivalent NID.

After the secure connection between the terminal equipment and the RAN is established, the RAN sends an RRC message to the terminal equipment. The RRC message includes an RRC release message or an RRC reconfiguration message, and the RRC message carries an equivalent NID.

The equivalent NID may be some of the lower bits of the NID.

The terminal device constructs a new first TMGI (as shown in FIG. 7 ) according to the equivalent NID in the RRC message, and subsequent interactions between the terminal device and the network can be performed using the truncated first TMGI.

Exemplarily, with reference to the following Figure 13, the mobility management message carries the equivalent NID, and the network device provides the equivalent NID to the terminal device, including the following steps:

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

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

Step 132, an authentication process is performed between the terminal device and the AMF.

Optionally, two-way authentication is performed between the terminal device and the AMF, and an authentication vector (Authentication Vector) is generated.

Step 133, the AMF sends a security mode command message to the terminal device.

Step 134, the terminal device returns a secure mode completion message to the AMF.

Through the above steps 133 and 134, an access layer security connection is established between the AMF and the terminal device.

Step 135, the AMF sends a registration acceptance message to the terminal device, and the registration acceptance message carries the equivalent NID.

After the secure connection between the terminal device and the AMF is established, the AMF sends a registration acceptance message to the terminal device. The equivalent NID in the Registration Accept message may be some of the lower order bits of the NID. The terminal device constructs a new first TMGI (as shown in FIG. 7 ) according to the equivalent NID in the registration acceptance message, and subsequent interactions between the terminal device and the network can be performed using the truncated first TMGI.

Optionally, the registration acceptance message also carries a list of Globally Unique Temporary UE Identity (GUTI) and Tracking Area Identity (TAI).

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

Exemplarily, referring to Figure 14 below, the session management message carries the equivalent NID, and the network device provides the equivalent NID to the terminal device, including the following steps:

Step 141, a registration process 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.

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

Optionally, the PDU session establishment request message carries the PDU session identifier and the IP type.

Step 143, the SMF returns a PDU session establishment accept message to the terminal device, and the PDU session establishment accept message carries an equivalent NID.

The equivalent NID in the PDU session establishment accept message may be some of the lower bits of the NID. The terminal device constructs a new first TMGI (as shown in FIG. 7 ) according to the equivalent NID in the PDU session establishment accept message, and subsequent interactions between the terminal device and the network can be performed using the truncated first TMGI.

Optionally, the PDU session establishment accept message also carries at least one of the following information: a PDU session identifier, a QoS parameter and a QoS rule.

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

FIG. 15 shows a flowchart of an identification determination method provided by an exemplary embodiment of the present application. The method can be applied to the MBS system architecture shown in FIG. 1 , and the method includes:

Step 1510: The network device sends second indication information, where the second indication information carries the first TMGI or carries the mapping relationship between the first TMGI and the regular TMGI.

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

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

Optionally, step 1510 is alternatively implemented as: the SMF sends a PDU session establishment accept message, and the PDU session establishment accept message carries the first TMGI or carries the mapping relationship between the first TMGI and the regular TMGI.

Step 1520, the terminal device receives the second indication information.

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

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

Step 1530, the terminal device determines the first TMGI based on the first TMGI carried in the second indication information.

Step 1540, the terminal device determines the first TMGI based on the mapping relationship between the first TMGI carried in the second indication information and the regular TMGI.

Since the terminal device obtains the mapping relationship between the first TMGI and the regular TMGI through the second indication information, when the first TMGI is used between the terminal device and the network, the terminal device and the network can associate the group corresponding to the first TMGI with the regular TMGI. associated with broadcasting services.

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 regular TMGI; or, equivalent NID and equivalent TMGI; or, NID and equivalent TMGI.

Optionally, in the first TMGI, the equivalent NID is located after the conventional TMGI, as shown in FIG. 7 . Optionally, in the first TMGI, the equivalent NID is located after the equivalent TMGI, as shown in FIG. 8 . Optionally, in the first TMGI, the NID is located after the equivalent TMGI, as shown in FIG. 9 . It can be understood that, the positional relationship of the information in the above-mentioned first TMGI may also exist in other implementation forms, which are not limited in this embodiment of the present application.

To sum up, in the method provided in this embodiment, the network device (including the AMF and the SMF) provides the terminal device with the truncated first TMGI or provides the mapping relationship between the first TMGI and the regular TMGI, and the terminal device and the network The truncated first TMGI will be used for interaction, thereby reducing the transmission overhead of the first TMGI.

Exemplarily, with reference to Figure 16 below, the mobility management message carries the first TMGI or the mapping relationship between the first TMGI and the conventional TMGI, and the network device provides the terminal device with the first TMGI or the relationship between the first TMGI and the conventional TMGI. The mapping relationship includes the following steps:

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

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

Optionally, two-way authentication is performed between the terminal device and the AMF, and an authentication vector is generated.

Step 163, the AMF sends a security mode command message to the terminal device.

Step 164, the terminal device returns a secure mode completion message to the AMF.

Through the above steps 163 and 164, an access layer security connection is established between the AMF and the terminal device.

Step 165, the AMF sends a registration acceptance message to the terminal device, where the registration acceptance message carries the first TMGI or the mapping relationship between the first TMGI and the regular TMGI.

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

Optionally, the registration acceptance message also carries the GUTI and TAI list.

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

Exemplarily, referring to Figure 17 below, the session management message carries the first TMGI or the mapping relationship between the first TMGI and the conventional TMGI, and the network device provides the terminal device with the first TMGI or the mapping between the first TMGI and the conventional TMGI. The mapping relationship includes the following steps:

Step 171, a registration process is performed between the terminal device and the network.

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

Step 173, the SMF returns a PDU session establishment accept message to the terminal device, and the PDU session establishment accept message carries the first TMGI or the mapping relationship between the first TMGI and the regular 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 the subsequent interaction between the terminal device and the network may be performed using the truncated first TMGI.

It should be noted that, the foregoing method embodiments may be implemented separately, or may be implemented in combination, which is not limited in this application.

In each of the above embodiments, the steps performed by the terminal device can be independently implemented as an identification determination method on the terminal device side, and the steps performed by the network device can be independently implemented as an identification indication method on the network device side.

FIG. 18 shows a block diagram of the structure of an apparatus for determining an identifier provided by an exemplary embodiment of the present application. The apparatus may be implemented as a terminal device, or may be implemented as a part of the terminal device, and the apparatus includes: an identifier determination module 1801;

The identity determination module 1801 is configured to determine a first TMGI including an NID, where the first TMGI is used for the terminal device to perform a process of performing a multicast service operation in the SNPN.

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

In an optional embodiment, the first TMGI includes: an equivalent NID and the regular TMGI, and the equivalent NID is a truncated NID of the NID.

In an optional embodiment, the first TMGI includes: an equivalent NID and an equivalent TMGI, the equivalent NID is a truncated NID of the NID, and the equivalent TMGI is a The conventional TMGI is the truncated TMGI.

In an optional embodiment, the first TMGI includes: the NID and the equivalent TMGI, where the equivalent TMGI is a truncated TMGI of the conventional TMGI.

In an optional embodiment, the identity determination module 1801 is configured to receive first indication information, where the first indication information carries the equivalent NID; and based on the equivalent NID, construct the first TMGI .

In an optional embodiment, the first indication information includes a broadcast message broadcast by the RAN.

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

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

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

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

In an optional embodiment, the identity determination module 1801 is configured to receive second indication information, where the second indication information carries the first TMGI; determine the first TMGI;

or,

The identity determination module 1801 is configured to receive second indication information, where the second indication information carries a mapping relationship between the first TMGI and the regular TMGI; and determine the first TMGI based on the mapping relationship.

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

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

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

FIG. 19 shows a structural block diagram of an identification indicating apparatus provided by an exemplary embodiment of the present application, the apparatus may be implemented as a network device, or may be implemented as a part of a network device, and the apparatus includes: an identification indicating module 1901;

The identification indication module 1901 is configured to send indication information to the terminal device, where the indication information is used for the terminal device to determine the first TMGI including the NID, and the first TMGI is used for the terminal device to be in the SNPN The process of performing multicast service operations.

In an optional embodiment, the indication information includes first indication information, 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 optional embodiment, the identification indicating module 1901 is used for the RAN to send a broadcast message.

In an optional embodiment, the identification indicating module 1901 is used for the RAN to send an RRC message.

In an optional embodiment, the identification indicating module 1901 is used for the AMF to send a registration acceptance message.

In an optional embodiment, the identification indicating module 1901 is used for the SMF to send a PDU session establishment accept message.

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

In an optional embodiment, the indication information includes second indication information, and the second indication information carries the first TMGI or carries a mapping relationship between the first TMGI and the regular TMGI.

FIG. 20 shows a schematic structural diagram of a communication device (terminal device or network device) provided by an exemplary embodiment of the present application. 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 a communication component, which may be a communication chip.

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

The memory 104 may be configured to store at least one instruction, and the processor 101 may be configured to execute the at least one instruction, so as to implement various steps in the foregoing method embodiments.

Additionally, memory 104 may be implemented by any type or combination of volatile or non-volatile storage devices including, but not limited to, magnetic or optical disks, electrically erasable programmable Read Only Memory (Electrically-Erasable Programmable Read Only Memory, EEPROM), Erasable Programmable Read Only Memory (EPROM), Static Random Access Memory (SRAM), Read Only Memory (Read-Only Memory, ROM), magnetic memory, flash memory, programmable read-only memory (Programmable Read-Only Memory, PROM).

Wherein, when the communication device is implemented as a terminal device, the processor and transceiver in the communication device involved in the embodiments of the present application may perform the steps performed by the terminal device in any of the above-mentioned methods shown in FIG. 4 to FIG. 17 , It will not be repeated here.

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

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

Wherein, when the communication device is implemented as a network device, the processor and the transceiver in the communication device involved in the embodiments of the present application may perform the steps performed by the network device in any of the methods shown in the foregoing FIG. 4 to FIG. 17 , It will not be repeated here.

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

In an exemplary embodiment, a computer-readable storage medium is also provided, wherein the computer-readable storage medium stores at least one instruction, at least one piece of program, code set or instruction set, the at least one instruction, the At least one piece of program, the code set or the instruction set is loaded and executed by the processor to implement the identification determination method or the identification indication method executed by the communication device provided in each of the above method embodiments.

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

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

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, etc.

The above descriptions are only optional embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims

A method for determining an identity, characterized in that it is applied to a terminal device, the method comprising:

A first temporary mobile group identity TMGI including a network identity NID is determined, where the first TMGI is used for the terminal device to perform a multicast service operation in a non-public network SNPN of an independent network.
The method of claim 1, wherein:

At least one of the NID and the regular TMGI in the first TMGI is truncated.
The method of claim 2, wherein:

The first TMGI includes: an equivalent NID and the regular TMGI, where the equivalent NID is the NID after the NID is truncated.
The method of claim 2, wherein:

The first TMGI includes: an equivalent NID and an equivalent TMGI, the equivalent NID is an NID obtained by truncating the NID, and the equivalent TMGI is a truncated NID of the conventional TMGI TMGI.
The method of claim 2, wherein:

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

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

Based on the equivalent NID, the first TMGI is constructed.
The method of claim 6, wherein:

The first indication information includes a broadcast message broadcast by the radio access network RAN.
The method of claim 6, wherein:

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

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

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

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

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

or,

Receive second indication information, where the second indication information carries a mapping relationship between the first TMGI and the regular TMGI; and determine the first TMGI based on the mapping relationship.
The method of claim 12, wherein:

The second indication information includes a registration acceptance message sent by the AMF.
The method of claim 12, wherein:

The second indication information includes a PDU session establishment accept 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,

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.
An identification indication method, characterized in that, when applied to a network device, the method includes:

Send indication information to the terminal device, the indication information is used for the terminal device to determine the first temporary mobility group identifier TMGI including the network identifier NID, and the first TMGI is used for the terminal device in the non-independent networking. The process of performing multicast service operations in the public network SNPN.
The method of claim 16, wherein:

At least one of the NID and the regular TMGI in the first TMGI is truncated.
The method of claim 17, wherein:

The first TMGI includes: an equivalent NID and the regular TMGI, where the equivalent NID is the NID after the NID is truncated.
The method of claim 17, wherein:

The first TMGI includes: an equivalent NID and an equivalent TMGI, the equivalent NID is an NID obtained by truncating the NID, and the equivalent TMGI is a truncated NID of the conventional TMGI TMGI.
The method of claim 17, wherein:

The first TMGI includes: the NID and the equivalent TMGI, where the equivalent TMGI is a truncated TMGI of the conventional TMGI.
The method of claim 18, wherein:

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 according to claim 21, wherein the sending the indication information to the terminal device comprises:

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

The RAN sends Radio Resource Control RRC messages.
The method according to 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 according to 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 Setup 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 includes second indication information, where the second indication information carries the first TMGI or carries a mapping relationship between the first TMGI and the regular TMGI.
The method according to claim 27, wherein the sending the indication information to the terminal device comprises:

AMF sends a Registration Accept message.
The method according to claim 27, wherein the sending the indication information to the terminal device comprises:

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,

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.
An identification determination device, characterized in that, when applied to terminal equipment, the device comprises: an identification determination module;

The identification determination module is configured to determine the first temporary mobile group identification TMGI including the network identification NID, and the first TMGI is used for the terminal device to perform the multicast service operation in the non-public network SNPN of the independent network. process.
The apparatus of claim 31, wherein:

At least one of the NID and the regular TMGI in the first TMGI is truncated.
The apparatus of claim 32, wherein

The first TMGI includes: an equivalent NID and the regular TMGI, where the equivalent NID is the NID after the NID is truncated.
The apparatus of claim 32, wherein

The first TMGI includes: an equivalent NID and an equivalent TMGI, the equivalent NID is an NID obtained by truncating the NID, and the equivalent TMGI is a truncated NID of the conventional TMGI TMGI.
The apparatus of claim 32, wherein

The first TMGI includes: the NID and the equivalent TMGI, where the equivalent TMGI is a truncated TMGI of the conventional TMGI.
The device according to claim 33, wherein the identification determination module is configured to:

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

Based on the equivalent NID, the first TMGI is constructed.
The apparatus of claim 36, wherein:

The first indication information includes a broadcast message broadcast by the radio access network RAN.
The apparatus of claim 36, wherein:

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

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

The first indication information includes a packet data unit PDU session establishment accept message sent by the session management function SMF.
The device according to any one of claims 36 to 40, characterized in that:

The identity determination module is configured to construct the first TMGI after adding the equivalent NID to the regular TMGI.
The device according to any one of claims 33 to 35, characterized in that,

The identity determination module is configured to receive second indication information, where the second indication information carries the first TMGI; determine the first TMGI;

or,

The identity determination module is configured to receive second indication information, where the second indication information carries a mapping relationship between the first TMGI and the regular TMGI; and determine the first TMGI based on the mapping relationship.
The apparatus of claim 42, wherein

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

The second indication information includes a PDU session establishment accept message sent by the SMF.
The device according to any one of claims 42 to 44, characterized in that,

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.
An identification indicating device, characterized in that, when applied to a network device, the device comprises: an identification indicating module;

The identification indication module is configured to send indication information to the terminal device, where the indication information is used for the terminal device to determine a first temporary mobile group identity TMGI including a network identification NID, and the first TMGI is used for the A process in which a terminal device performs a multicast service operation in a non-public network SNPN of an independent network.
The apparatus of claim 46, wherein:

At least one of the NID and the regular TMGI in the first TMGI is truncated.
The apparatus of claim 47, wherein:

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

The first TMGI includes: an equivalent NID and an equivalent TMGI, the equivalent NID is an NID obtained by truncating the NID, and the equivalent TMGI is a truncated NID of the conventional TMGI TMGI.
The apparatus of claim 47, wherein:

The first TMGI includes the NID and the equivalent TMGI, where the equivalent TMGI is a truncated TMGI of the conventional TMGI.
The apparatus of claim 48, wherein

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 identification indicating module is used for the radio access network RAN to send a broadcast message.
The apparatus of claim 51, wherein:

The identification indicating module is used for the RAN to send a radio resource control RRC message.
The apparatus of claim 51, wherein

The identification indicating module is used for the access and mobility management AMF to send a registration acceptance message.
The apparatus of claim 51, wherein

The identification indicating module is used for the session management function SMF to send a packet data unit PDU session establishment accept message.
The device according to any one of claims 50 to 55, characterized in that:

In the first TMGI constructed by the terminal device, the equivalent NID is located after the regular TMGI.
The device according to any one of claims 48 to 50, characterized in that:

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 regular TMGI.
The apparatus of claim 57, wherein:

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

The identification indicating module is used for the SMF to send a PDU session establishment accept message.
The device according to any one of claims 57 to 59, characterized in that,

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.
A terminal device, characterized in that the terminal device comprises: a processor and a transceiver connected 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 the terminal device to perform a multicast service operation in a non-public network SNPN of an independent network .
A network device, characterized in that the network device comprises: a processor and a transceiver connected 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 mobility group identity TMGI including a network identity NID, and the first TMGI is used for the terminal to determine A process in which a device performs multicast service operations in a non-public network SNPN of an independent network.
A computer-readable storage medium, wherein executable instructions are stored in the readable storage medium, and the executable instructions are loaded and executed by a processor to realize the identification according to any one of claims 1 to 30 Determine the method, or, identify the indicating method.