Patent ID: 8086216
Filing Date: 2011-12-27
Classification: H04L

Abstract:
1. A method for implementation in a policy control and charging rules function (PCRF) in a wireless communication system, comprising: receiving, at the PCRF from a policy and charging enforcement function (PCEF) in a gateway of at least one of a source access network or a target access network, information indicative of a mobile unit that has handed off from the source access network to the target access network; establishing, between the PCRF and the PCEF in the gateway of the target access network, a first session for communicating policy and charging rules associated with the mobile unit, the first session being substantially concurrent with a second session for communicating policy and charging rules associated with the mobile unit, the second session being previously established between the PCRF and the PCEF in the gateway of the source access network; and transmitting at least one policy and charging rule from the PCRF to the PCEF in the gateway of the target access network using the first session, wherein the second session is not released until said at least one policy and charging rule is installed on the PCEF in the gateway of the target access network.