System and method for a multiple IP interface control protocol

摘要

Embodiments are provided for a mechanism for supporting multiple 3GPP Packet Data Network (PDN) connections over a WLAN. Multiple gateway interfaces, each corresponding to a different PDN, are established over a single connection, via the WLAN, between a UE and an access gateway. A PDN access configuration protocol (PACP) is provided to configure the association between the IP interface on the access gateway and the corresponding 3GPP PDN/APN connection, and exchange the PDN setup between the UE and the access gateway. The PACP mechanisms allow signaling APN information and associating corresponding IP context at the access gateway, setting up and tearing down connection context between the UE and PDN gateway (P-GW), and supporting session continuity when the UE moves to another access gateway. The mechanisms support using Dynamic Host Configuration Protocol (DHCP) for IPv4 and Neighbor Discovery for IPv6.

主权项

1. A method, implemented by a network component using a dedicated protocol for supporting Packet Data Network (PDN) connections over a wireless access network, the method comprising:
receiving, from a user equipment (UE), a request piggybacked on an internet control message protocol (ICMP) Echo message, the request requesting establishment of a PDN connection between the network component and a PDN, and creation of a session associated with the PDN connection, the request indicating an Access Point Name (APN); assigning a gateway Internet Protocol (IP) interface on a link between the UE and the network component; sending, to the UE, an acknowledgement to create a session, the acknowledgement including the gateway IP interface; sending, to a PDN gateway, a request for establishing the PDN connection; receiving, from the PDN gateway, a response establishing the session between the PDN gateway and the network component including an assigned IP address for the session; receiving from the UE a dynamic host configuration protocol (DHCP) request using a value of the gateway IP interface as a server identity for an IP address associated with the session between the PDN gateway and the network component associated with the APN; sending, to the UE, the assigned IP address; and establishing communication between the UE and the PDN gateway using the gateway IP interface and the assigned IP address for the session.