Internetworking techniques for transferring packets between source and target serving gateways

A gateway device operable in a target access network comprising:

• a memory;
• and
• a processor;
• wherein the memory stores instructions, which, when executed by the processor, cause the processor to:
• receive a request operating in the target access network for transferring wireless service of a wireless device from a source access network to the target access network;
• send a handover initiate message comprising an uplink key to a source gateway operating in the source access network;
• receive user session information including session reference identifiers (SR-IDs) associated with multiple Internet Protocol (IP) addresses of the wireless device;
• receive, subsequent to the receiving the acknowledgement message, a forwarding packet for the wireless device, the forwarding packet using the uplink key and one of the SR-IDs;
• and
• forwarding the uplink packet to a gateway server.

A method for wireless communications, comprising:

• receiving, at a source gateway operating in a source access network, a handover initiate message comprising key information including an uplink key from a target gateway operating in a target access network;
• transmitting, to the target gateway, information including session reference identifiers (SR-IDs) associated with multiple Internet Protocol (IP) addresses of a wireless device;
• and
• transmitting, to the target gateway, subsequent to the transmitting information, a forwarding packet from uplink packet transmissions by the wireless device, the forwarding packet being encrypted using the uplink key and one of the SR-IDs.

A gateway server operable in a source access network in which a wireless device is being initially provided wireless connectivity, comprising:

• a memory;
• and
• a processor;
• wherein the memory stores instructions that, when implemented by the processor, cause the processor to:
• receive a handover initiate message comprising an uplink key from a target gateway operating in a target access network;
• transmit, to the target gateway, information including session reference identifiers (SR-IDs) associated with multiple Internet Protocol (IP) addresses of the wireless device;
• and
• transmitting, to the target gateway, subsequent to the transmitting information, a forwarding packet for the wireless device, the forwarding packet using the uplink key and one of the SR-IDs.