Motorola Solutions, Inc.

Shrinivas Shetti

Madhusudan K Pai

Anatoly Agulnik

Ilya Freytsis

Luqing Wang

Dominic Lazara

Kiran Kalburgi

Udaya Shankara P S

Udaya Shankara Ps

Ps Udaya Shankara

K Pai Madhusudan

PS Udaya Shankara

A method, Group Application Server, and mobile device are provided that coordinate an operation of multiple mobile devices of a same user in a group call. When the multiple mobile devices join the group call, a first mobile device of the multiple mobile devices determines that it is an active device and provides an indication of such to the Group Application Server. In response to receiving the indication, the Group Application Server identifies a second mobile device, of the multiple mobile devices, that is a non-active device and one or more of modifies subsequent communications with the second mobile device or conveys a behavior modification message to the second mobile device. In another embodiment of the present invention, the first mobile device may indicate that it is the active device directly to the second mobile device and the second mobile device modify its behavior accordingly.

Method and apparatus for coordinating an operation of multiple mobile devices in a group call

An enhanced push to talk (PTT) method, a network, and a PTT server provide floor control and media traffic optimization for push to talk over cellular (PoC). Specifically, multiple Session Initiation Protocol (SIP) sessions are contemplated between controlling and participating servers while only requiring a single Real Time Protocol (RTP) session for media and a single Real Time Control Protocol (RTCP) session for floor control. In the single RTP and RTCP session, the synchronization source identifier (SSRC) can be used to differentiate between users equipment (UEs) at the controlling and participating servers.

Enhanced push to talk systems and methods with floor control and media traffic optimization

A method for providing presence notification for PTT chat group communications includes a server receiving, from a communication device of a member of a chat group, a session initiation message to start a session for the PTT chat group. The session initiation message includes a member-selected priority. The server generates an event notification message that includes an indication that the chat group is active and has been assigned a priority, and sends the event notification message to communication devices of at least some of the other chat group members. Additionally, where a group priority has been assigned to the chat group, the group priority is assigned to the session. Otherwise, the member-selected priority is assigned to the session.

Method and apparatus for providing session initiator privilege, priority and presence notification for push-to-talk chat group communications

Growing community of inventors

Karnataka, India

Shrinivas Shetti