Connection processing method and apparatus in multi-access scenario
Connection processing methods in a multi-access scenario and apparatus are described. One example method performed by a mobility management functional entity includes receiving a first transmission message sent by an access network device. The first transmission message includes a registration request message, and the registration request message includes first multi-access indication information and identification information. It is determined, based on the first multi-access indication information and the identification information, that the user equipment has registered with a first communications network and has initiated registration with a second communications network. A procedure of registering the user equipment with the second communications network is performed. In the embodiments of the present disclosure, multi-access registration of the user equipment in the first communications network and the second communications network can be implemented.
1. A connection processing method in a multi-access scenario, wherein the method comprises:
receiving, by a session management functional entity, a second transmission message from a mobility management functional entity, wherein the second transmission message comprises second multi-access indication information and a session identifier, wherein the second multi-access indication information indicates that user equipment requests to establish a multi-access protocol data unit (PDU) session for a session corresponding to the session identifier, and wherein the multi-access PDU session supports access to a first communications network and a second communications network;
determining, by the session management functional entity, whether establishment of the multi-access PDU session is allowed based on session subscription data of the user equipment;
in response to determining that the establishment of the multi-access PDU session is allowed based on session subscription data of the user equipment, sending, by the session management functional entity, an N4 session establishment or update request message to a user plane functional entity, wherein the N4 session establishment or update request message comprises a fourth multi-access indication information, wherein the fourth multi-access indication information instructs to store access network side tunnel identifiers of the first communications network and the second communications network; and
receiving, by the session management functional entity, a connection establishment reply message from the user plane functional entity.
2. The method according to claim 1 , further comprising:
sending a session establishment or update message to a user plane functional entity, wherein the session establishment or update message instructs the user plane functional entity to establish, for the session, a tunnel identifier corresponding to an access network side of a second communications network.
3. The method according to claim 1 , further comprising:
sending a seventh multi-access indication information, the session identifier, and an access type information to a policy control function entity, wherein the seventh multi-access indication information indicates that a PDU session corresponding to the session identifier is a multi-access PDU session.
4. The method according to claim 1 , further comprising:
sending fifth multi-access indication information and the session identifier to the mobility management functional entity, wherein the fifth multi-access indication information indicates that the session corresponding to the session identifier is a multi-access PDU session.
5. The method according to claim 1 , wherein the second transmission message further comprises a permanent identifier of the user equipment.
6. A session management apparatus, the apparatus comprising:
at least one processor; and
a memory storing computer-executable instructions, wherein the computer-executable instructions, when executed by the at least one processor, instruct the at least one processor to:
receive a second transmission message from a mobility management functional entity, wherein the second transmission message comprises second multi-access indication information and a session identifier, wherein the second multi-access indication information indicates that a user equipment requests to establish a multi-access protocol data unit (PDU) session for a session corresponding to the session identifier, and wherein the multi-access PDU session supports access to a first communications network and a second communications network;
determine whether establishment of the multi-access PDU session is allowed based on session subscription data of the user equipment;
in response to determining that the establishment of the multi-access PDU session is allowed based on session subscription data of the user equipment, sending an N4 session establishment or update request message to a user plane functional entity, wherein the N4 session establishment or update request message comprises a fourth multi-access indication information, wherein the fourth multi-access indication information instructs to store access network side tunnel identifiers of the first communications network and the second communications network; and
receiving a connection establishment reply message from the user plane functional entity.
7. The session management apparatus according to claim 6 , wherein the computer-executable instructions instruct the at least one processor to:
send a session establishment or update message to a user plane functional entity, wherein the session establishment or update message instructs the user plane functional entity to establish, for the session, a tunnel identifier corresponding to an access network side of a second communications network.
8. The session management apparatus according to claim 6 , wherein the computer-executable instructions instruct the at least one processor to:
send a seventh multi-access indication information, the session identifier, and access type information to a policy control function entity, wherein the seventh multi-access indication information indicates that a PDU session corresponding to the session identifier is a multi-access PDU session.
9. The session management apparatus according to claim 6 , wherein the computer-executable instructions instruct the at least one processor to:
send a fifth multi-access indication information and the session identifier to the mobility management functional entity, wherein the fifth multi-access indication information indicates that the session corresponding to the session identifier is a multi-access PDU session.
10. The session management apparatus according to claim 6 , wherein the second transmission message further comprises a permanent identifier of the user equipment.
11. A communication device, the device comprising:
at least one processor; and
a memory storing computer-executable instructions, wherein the computer-executable instructions, when executed by the at least one processor, instruct the at least one processor to:
initiate registration with a first communications network and a second communications network;
after the registration succeeds, determine whether the first communications network and the second communications network belong to a same public land mobile network (PLMN);
in response to determining that the first communications network and the second communications network belong to a same PLMN, send a non-access stratum message to a core-network network device, wherein the non-access stratum message comprises a multi-access protocol data unit (PDU) session parameter, wherein the multi-access PDU session parameter comprises second multi-access indication information and a session identifier, and wherein the second multi-access indication information is for indicating that the communication device requests to establish a multi-access PDU session for a session corresponding to the session identifier.
12. A connection processing system in a multi-access scenario, the system comprising a session management functional entity and a mobility management functional entity, wherein:
the mobility management functional entity is configured to send a second transmission message to the session management functional entity, wherein the second transmission message comprises second multi-access indication information and a session identifier, wherein the second multi-access indication information is used to indicate that a user equipment requests to establish a multi-access protocol data unit (PDU) session for a session corresponding to the session identifier, and wherein the multi-access PDU session supports access to a first communications network and a second communications network; and
the session management functional entity is configured to:
receive the second transmission message;
determine whether establishment of the multi-access PDU session is allowed based on session subscription data of the user equipment;
in response to determining that the establishment of the multi-access PDU session is allowed based on session subscription data of the user equipment, send an N4 session establishment or update request message to a user plane functional entity, wherein the N4 session establishment or update request message comprises a fourth multi-access indication information, wherein the fourth multi-access indication information instructs to store access network side tunnel identifiers of the first communications network and the second communications network; and
receive a connection establishment reply message from the user plane functional entity.
13. The connection processing system according to claim 12 , wherein the mobility management functional entity is configured to send the second multi-access indication information through the second transmission message in response to determining that establishment of a multi-access connection for the PDU session is allowed.
14. The connection processing system according to claim 12 , wherein the session management functional entity is configured to:
send a session establishment or update message to a user plane functional entity, wherein the session establishment or update message instructs the user plane functional entity to establish, for the session, a tunnel identifier corresponding to an access network side of the second communications network.
15. The connection processing system according to claim 12 , wherein:
the mobility management functional entity is configured to generate a third multi-access indication information and send the third multi-access indication information to the session management functional entity through the second transmission message in response to determining that establishment of a multi-access connection for the PDU session is allowed, wherein the third multi-access indication information is a multi-access status indication, wherein the multi-access status indication is used to indicate a state in which the user equipment accesses both the first communications network and the second communications network.
16. The connection processing system according to claim 12 , wherein:
the session management functional entity is configured to send a fifth multi-access indication information and the session identifier to the mobility management functional entity, wherein the fifth multi-access indication information is used to indicate that the session corresponding to the session identifier is a multi-access PDU session; and
the mobility management functional entity is configured to mark the session corresponding to the session identifier as a multi-access PDU session based on the fifth multi-access indication information.
17. The method according to claim 1 , further comprising:
sending, by the mobility management functional entity, the second multi-access indication information through the second transmission message in response to determining that establishment of a multi-access connection for the PDU session is allowed.
18. The method according to claim 1 , further comprising:
generating, by the mobility management functional entity, a third multi-access indication information and sending the third multi-access indication information to the session management functional entity through the second transmission message in response to determining that establishment of a multi-access connection for the PDU session is allowed, wherein the third multi-access indication information is a multi-access status indication, wherein the multi-access status indication indicates a state in which the user equipment accesses both the first communications network and the second communications network.
19. The method according to claim 4 , further comprising:
marking, by the mobility management functional entity, the session corresponding to the session identifier as a multi-access PDU session based on the fifth multi-access indication information.
20. The device according to claim 11 ,
wherein the first communications network is 3GPP network, and the second communications network is non-3GPP network; or,
wherein the first communications network is non-3GPP network, and the second communications network is 3GPP network.
21. The device according to claim 11 ,
wherein the communication device accesses the core-network network device through the first communications network and the second communications network.