Patent ID: 8180388
Filing Date: 2012-05-15
Classification: H04L,H04W

Abstract:
1. A method for a radio access network (RAN) to facilitate establishment of an instant communication session for a destination wireless communication device (WCD), wherein the RAN is communicatively coupled to a packet-switched network, and wherein the RAN provides a wireless coverage area that serves the destination WCD, the method comprising the following functions performed by the RAN: receiving a profile from the destination WCD, wherein the profile indicates that the destination WCD is capable of supporting the instant communication session; storing the received profile; after storing the profile, receiving an instant communication session setup message via the packet-switched network, wherein the instant communication session setup message contains a quality of service (QOS) indication; in response to receiving the instant communication session setup message, making a determination whether a condition is met, wherein the condition comprises (1) the QOS indication containing a pre-determined QOS value, and (2) the destination WCD being capable of supporting the instant communication session; if the determination is that the condition is met, then (a) transmitting a page request message to the destination WCD, (b) pre-allocating at least one QOS resource for the instant communication session, (c) transmitting to the destination WCD an indication of the at least one QOS resource pre-allocated for the instant communication session, and (d) thereafter receiving a connection request message from the destination WCD, wherein the connection request message is a reply to the page request message; and if the determination is that the condition is not met, then (a) transmitting the page request message to the destination WCD, and (b) receiving the connection request message from the destination WCD without having previously performed QOS resource pre-allocation for the instant communication session.