Patent ID: 8868685
Filing Date: 2014-10-21
Classification: H04W

Abstract:
1. A method for reducing delay in being granted a floor due to queuing time for an announce message during a push-to-talk (PTT) communication in a wireless communication network, comprising: receiving at a server a first message from an originating wireless device, the first message is a call request message; identifying at least one target wireless device for the PTT communication in response to receiving the first message; transmitting a second message, in response to receiving the first message, from the server to a base station to determine if the at least one target wireless device is online, the second message having a header with an empty message body and being transmitted before the announce message is sent by the server to the base station; allocating resources by the server to the originating wireless device; transmitting the announce message from the server to the base station in response to receiving the first message and after transmitting the second message, but before receiving an acknowledgement receipt of the second message; receiving at the server, after transmitting the announce message, acknowledgement messages acknowledging receipt of the second message and the announce message from the at least one target wireless device; and transmitting, after receiving the acknowledgment messages, a status message to the originating wireless device granting the floor to the originating wireless device to enable transmission of an audio message to the at least one target wireless device.