Packet mode speech communication

Details Packet mode speech communication Packet mode speech communication

2002-04-12

2008-08-05

Chan, Wing (Department: 2619)

Multiplex communications

Channel assignment techniques

Only active channels transmitted

C370S432000, C370S310000, C370S411000

Reexamination Certificate

active

07408948

ABSTRACT:
A packet mode (e.g. IP) group communication service layer is provided on top of a standard mainstream cellular radio network. Conceptually, the group communication layer includes a pair of basic logical entities, an application bridge and a call processing server (CPS). The bridge and the CPS run group service applications which communicate with group service application(s) in a mobile station MS over the IP connections provided by the radio network. The CPS is responsible for control plane management of group communications. The bridge is responsible for the real-time distribution of VoIP packets to the user terminals according to their group memberships over valid connections programmed by the CPS.

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