Method and apparatus for obtaining network slice identifier
Embodiments of this application provide a method and an apparatus for obtaining a network slice identifier. In the method, a wireless access device receives a first service packet sent by a terminal; the wireless access device obtains a second service packet based on the first service packet, where the second service packet includes the first service packet and a network slice identifier; and the wireless access device sends the second service packet to a forwarding device.
1. A method of obtaining a network slice identifier, comprising:
receiving, by a wireless access device, a first service packet;
obtaining, by the wireless access device, a second service packet based on the first service packet, wherein the second service packet comprises the first service packet and a network slice identifier; and
sending, by the wireless access device, the second service packet based on the network slice identifier.
2. The method according to claim 1 , wherein the obtaining, by the wireless access device, a second service packet based on the first service packet comprises:
obtaining, by the wireless access device, a first identifier based on the first service packet, wherein the first identifier is used to identify a service of a subscriber; and
obtaining, by the wireless access device, the second service packet based on the first identifier, the first service packet, and a correspondence comprising the network slice identifier and the first identifier, the second service packet comprises a tunnel encapsulation comprising the network slice identifier.
3. The method according to claim 2 , wherein the first identifier comprises at least one of a service identifier or an identifier of the subscriber.
4. The method according to claim 1 , wherein the obtaining, by the wireless access device, a second service packet based on the first service packet comprises:
obtaining, by the wireless access device, the network slice identifier from the first service packet, wherein the first service packet comprises the network slice identifier; and
performing, by the wireless access device, a tunnel encapsulation on the first service packet, to obtain the second service packet, wherein the tunnel encapsulation comprises the network slice identifier.
5. The method according to claim 2 , wherein the tunnel encapsulation comprises an internet protocol version 6 (IPv6) extension header comprising the network slice identifier.
6. The method according to claim 5 , wherein the IPv6 extension header comprises a hop-by-hop options header comprising an option type and option data, the option type is used to identify a type of a network slice identifier, and the option data is used to carry the network slice identifier.
7. The method according to claim 2 , wherein the tunnel encapsulation comprises a general packet radio service tunneling protocol user plane (GTP-U) header comprising extension header content, and the extension header content is used to carry the network slice identifier.
8. An apparatus for obtaining a network slice identifier, wherein the apparatus is disposed in a wireless access device, and the apparatus comprising:
a processor; and
a non-transitory computer-readable storage medium coupled to the processor and storing programming instructions for execution by the processor, the programming instructions instruct the apparatus to:
receive a first service packet;
obtain a second service packet based on the first service packet, wherein the second service packet comprises the first service packet and a network slice identifier; and
send the second service packet based on the network slice identifier.
9. The apparatus according to claim 8 , wherein the programming instructions instruct the apparatus to:
obtain a first identifier based on the first service packet, wherein the first identifier is used to identify a service of a subscriber; and
obtain the second service packet based on the first identifier, the first service packet, and a correspondence comprising the network slice identifier and the first identifier, the second service packet comprises a tunnel encapsulation comprising the network slice identifier.
10. The apparatus according to claim 9 , wherein the first identifier comprises at least one of a service identifier or an identifier of the subscriber.
11. The apparatus according to claim 8 , wherein the programming instructions instruct the apparatus to:
obtain the network slice identifier from the first service packet, wherein the first service packet comprises the network slice identifier; and
perform a tunnel encapsulation on the first service packet, to obtain the second service packet, wherein the tunnel encapsulation comprises the network slice identifier.
12. The apparatus according to claim 9 , wherein the tunnel encapsulation comprises an internet protocol version 6 (IPv6) extension header comprising the network slice identifier.
13. The apparatus according to claim 12 , wherein the IPv6 extension header comprises a hop-by-hop options header comprising an option type and option data, the option type is used to identify a type of a network slice identifier, and the option data is used to carry the network slice identifier.
14. The apparatus according to claim 9 , wherein the tunnel encapsulation comprises a general packet radio service tunneling protocol user plane (GTP-U) header comprising extension header content, and the extension header content is used to carry the network slice identifier.
15. An apparatus for obtaining a network slice identifier, wherein the apparatus is disposed in a forwarding device, the apparatus comprising:
a processor; and
a non-transitory computer-readable storage medium coupled to the processor and storing programming instructions for execution by the processor, the programming instructions instruct the processor to:
receive a second service packet, wherein the second service packet comprises a first service packet and a network slice identifier;
obtain the network slice identifier from the second service packet; and
lead, based on the network slice identifier, the second service packet into a network slice corresponding to the network slice identifier.
16. The apparatus according to claim 15 , wherein the programming instructions instruct the apparatus to:
obtain, based on the network slice identifier and a correspondence, a network resource corresponding to the network slice; and
send the second service packet by using the network resource corresponding to the network slice.
17. The apparatus according to claim 15 , wherein the second service packet comprises an internet protocol version 6 (IPv6) extension header comprising the network slice identifier.
18. The apparatus according to claim 17 , wherein the IPv6 extension header comprises a hop-by-hop options header comprising an option type and option data, the option type is used to identify a type of a network slice identifier, and the option data is used to carry the network slice identifier.
19. The apparatus according to claim 15 , wherein the second service packet comprises a tunnel encapsulation, and wherein the tunnel encapsulation comprises a general packet radio service tunneling protocol user plane (GTP-U) header comprising extension header content, and the extension header content is used to carry the network slice identifier.