Method and apparatus for resource management in handover operation
First Claim
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1. 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.
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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.
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Citations
18 Claims
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1. 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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A base station, comprising:
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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. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. 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:
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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. - View Dependent Claims (16, 17, 18)
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Specification