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

摘要

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.

主权项

1. An enhanced push to talk (PTT) method for establishing a group session between a controlling server and a participating server, comprising:
establishing a first Session Initiation Protocol (SIP) session for a first user equipment (UE) between the controlling server and the participating server; establishing a Real Time Protocol (RTP) session and a Real Time Control Protocol (RTCP) session between the controlling server and the participating server; establishing a second SIP session for a second UE between the controlling server and the same participating server; and utilizing the same RTP session for providing media and the same RTCP session for providing floor control for both the first UE and the second UE between the controlling server and the participating server; wherein the first UE and the second UE are homed at the participating server and the associated group is homed at the controlling server.