Method and apparatus for resource management in handover operation
AssigneeInterDigital Technology Corporation
InventorKamel M. Shaheen
Life of this patent
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Abstract
A method and apparatus for resource management during handover operation includes initiating a handover from a first access network to a second access network. A policy update message is sent and a policy update confirmation message is received. A general packet radio service (GPRS) tunneling protocol (GTP) message and a radio access bearer (RAB) release message is sent and a GTP and RAB release acknowledgment is received. Connectivity is established for uplink and downlink transmission in the second access network.
Claims18
A method for resource management using a packet data network gateway (PDN GW) during a handover operation from a first access network to a second access network, the method comprising:
- sending a policy update message from the PDN GW to a policy and charging rules function (PCRF) over an interface comprising at least one of the following:
- an S2a interface, an S2c interface and an S5 interface;
- receiving, at the PDN GW, a policy update confirmation message from the PCRF over the interface;
- establishing, via the PDN GW, connectivity between user equipment (UE) and the PDN GW for uplink and downlink transmission over the second access network;
- and
- releasing, via the PDN GW, resources associated with the first access network;
- wherein the first access network comprises either a third generation partnership project (3GPP) access network or a trusted non-3GPP Internet Protocol (IP) access network, and the second access network comprises either a third generation partnership project (3GPP) access network or a trusted non-3GPP Internet Protocol (IP) access network.
A base station, comprising:
- a receiver;
- a transmitter;
- and
- a processor in communication with the receiver and the transmitter, the processor configured to send a policy update message from a packet data network gateway (PDN GW) to a policy and charging rules function (PCRF) over an interface comprising at least one of the following:
- an S2a interface, an S2c interface, and an S5 interface, receive a policy update confirmation message from the PCRF over the interface, establish connectivity between user equipment (UE) and the base station for uplink and downlink transmission over a second access network;
- and release resources associated with a first access network;
- wherein the first access network comprises either a third generation partnership project (3GPP) access network or a trusted non-3GPP Internet Protocol (IP) access network, and the second access network comprises either a third generation partnership project (3GPP) access network or a trusted non-3GPP Internet Protocol (IP) access network.
A method for resource management using a packet data network gateway (PDN GW) during a handover operation from a third generation partnership project (3GPP) access network to a trusted non-3GPP Internet protocol (IP) access network, the method comprising:
- sending a policy update message from the PDN GW to a policy and charging rules function (PCRF) over an S5 interface;
- receiving, at the PDN GW, a policy update confirmation message from the PCRF over the S5 interface;
- establishing, via the PDN GW, IP connectivity between user equipment (UE) and the PDN GW for uplink and downlink transmission over the trusted non-3GPP IP access network;
- and
- releasing, via the PDN GW, resources associated with the 3GPP access network.
Dependencies are inferred from the claim text.