System and method for providing an early notification when paging a wireless device

摘要

A system and method for a server to provide an early notification to a target group devices when paging a wireless device during a push-to-talk (PTT) communication. When a wireless device is ready to transmit a PTT communication, a message is sent from the wireless device to a server that then sends an early PING message to a base station while processing a call request message from the wireless device. After processing the call request message, the server sends an announce message to the base station. On receipt of the PING message, the base station sends a paging message to all targeted devices while processing the announce message. The early PING message causes a communication channel to be established between a targeted device and the base station, and the communication channel can then be used by the announce message with less set-up time.

主权项

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.