Reducing time for call failure indication

摘要

Techniques are disclosed for reducing the time for a wireless communication device originating a group communication, such as a push-to-talk call, to receive a call failure indication on a wireless communications system. In an embodiment, a group communications server receives a request to initiate a call with a target from an originator, and sends a corresponding message to a network node. If the call cannot be completed, the server receives from the network node an internet control message protocol (ICMP) message indicative of there being no connection between the network node and the target wireless communication device. In response to the message, the group communications server sends a status failure message to the originating wireless communication device.

主权项

1. A method for reducing time to receive a call failure indication in a wireless communications system, comprising:
receiving from an originator wireless communications device a request to initiate a call with a target wireless communications device; sending to a packet data serving node (PDSN), a call announce message that corresponds to the request; receiving from the PDSN in response to the call announce message, an internet control message protocol (ICMP) message indicative of the PDSN lacking a connection to a radio access network that corresponds to the target wireless communications device; and sending a status failure message to the originator wireless communications device indicative of the call failing, wherein the status failure message includes information indicative of a reason for failure.