Qualcomm Incorporated

Karthik Balu

Rajan Verma

Chinmay Dhodapkar

Bryant Keith Forsgren

Devang Narendra Bhatt

Vidyadhar Kamath

Gautam Savarkar

Nitin K Tiwari

A system and method for minimizing call setup latency in a group communication among wireless communication devices by ensuring the requisite amount of communication bandwidth for group member devices that utilize separate communication systems to control communication channels established with each of the wireless communication devices. A group communication server that sets up group communications for wireless communication device members of a communication group communicates with a resource manager resident on a communication system to reserve a predetermined amount of resources, such as bandwidth, for wireless communication devices utilizing that communication system that are members of a communication group. The resource manager communicates the availability to the group communication server of the wireless communication devices utilizing that communication system for group communications only if the predetermined resources are available for a group communication to the wireless communication device.

System and method for minimizing call setup latency in a group communication among wireless communication devices

A system and method for pre-allocating PTT resources including user/resource credentials at the native PTT gateway are presented. The user status and floor control information can be buffered at the native PTT gateway until the native PTT gateway receives actual resource/end point information from the media handler. Afterwards, the pre-allocation of PTT resources can be correctly mapped to the actual user resources/end point information when the native PTT gateway receives such information from the media handlers and a call is handled.

Latency improvement methods in native PTT gateway for a group call with dispatch console clients

Methods, systems and devices are provided for restoring a multiple call session. A communication terminal can restore a multiple call session after a fault. A network interface can couple the terminal to a network including multiple access terminals associated with the multiple call session. A request for a state of the multiple call session can be transmitted and received by a server in the network. A response including the state can be received. The multiple call session can be restored based on the state of the multiple call session and other information.

Methods and devices for restoring session state

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Karthik Balu