Distribution method of IPv6, SMF, and communication system

Abstract

The embodiment of the invention discloses a distribution method of an IPv6 (Internet Protocol Version 6), an SMF (Session Management Function), and a communication system, and relates to the technicalfield of communication. An IPv6 address prefix is timely updated according to a position change condition of UE (User Equipment) so as to achieve refined control of the UE. The method comprises the steps of: after the UE switches a RAN (Radio Access Network) node of a wireless access network, receiving current position information, a data network name and an access type of the UE sent by an AMF by the SMF; if determining that the current position information is not consistent to the position information prior to the UE switching the RAN node, generating a new IPv6 address prefix according tothe current position information, the data network name and the access type of the UE; sending a first IPv6 router annunciation RA message to the UE through a UPF (User Port Function) by the SMF; sending a second IPv6 router annunciation RA message to the UE through the UPF; and releasing the IPv6 address prefix prior to the UE switching the RAN node by the SMF after the valid time. The distribution method of the IPv6, the SMF, and the communication system are applied to the network system.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular to a method for allocating IPv6 addresses, an SMF, and a communication system. Background technique [0002] As the public Internet Protocol Version 4 (IPv4) addresses of domestic operators and branches are being used up one after another, in order to ensure sustainable business development, operators will gradually implement Internet Protocol Version 6 (IPv4) according to different scenarios. Internet Protocol Version 6, IPV6) commercial and large-scale deployment, whether it can provide an effective and compliant user supervision solution will be a key to the commercial use of IPV6. [0003] In the prior art, an IPV6 address prefix can be generated based on the location information of the user equipment UE, so as to implement IPV6 address allocation and fine-grained management and control. However, when the location of the UE moves and the radio...

AI Technical Summary

Problems solved by technology

However, when the location of the UE moves and the radio access network RAN ​​(RadioAccess Network) needs to be switched, if the SMF (Session Management Function, Session Management Function) and UPF (User Port Function, User Port Function) do not change, then New IPV6 addresses will not be assigned to UEs based on their current location information. Therefore, it often happens that the IPV6 address prefix assigned to UEs is inconsistent with the current location information of UEs, resulting in failure to provide effective compliance supervision of IPV6 addresses.

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