Method and system for providing PTT to conference
First Claim
1. A method for providing push-to-talk (PTT) so as to conference between a plurality of user equipment (UEs) serving as clients in a mobile communication network, the mobile communication network comprising a PTT over cellular (PoC) server, a conference server, and a mixer for mixing for the conference, the method comprising the steps of:
- performing a request procedure for switching over to the conference during a PoC session between the UEs;
performing a conference client invitation or participation procedure for opening a conference session through the conference server; and
performing a procedure for releasing the conference session between the PoC server and the UEs.
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Abstract
A method for providing push-to-talk (PTT) so as to conference between a plurality of user equipments (UEs) serving as clients in a mobile communication network including a PTT over cellular (PoC) server, a conference server, and a mixer for mixing for the conference. The method comprises performing a request procedure for switching over to the conference during a PoC session between the UEs; performing a conference client invitation or participation procedure for opening a conference session through the conference server; and performing a procedure for releasing the conference session between the PoC server and the UEs. The method can switch over to a conference service during a PTT service without newly initializing the conference service after completing an old PoC session, and can also switch over to bidirectional communication between all or some of the participants during a PoC session which is using unidirectional communications.
40 Citations
26 Claims
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1. A method for providing push-to-talk (PTT) so as to conference between a plurality of user equipment (UEs) serving as clients in a mobile communication network, the mobile communication network comprising a PTT over cellular (PoC) server, a conference server, and a mixer for mixing for the conference, the method comprising the steps of:
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performing a request procedure for switching over to the conference during a PoC session between the UEs;
performing a conference client invitation or participation procedure for opening a conference session through the conference server; and
performing a procedure for releasing the conference session between the PoC server and the UEs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for providing push-to-talk (PTT) so as to conference through a mobile communication network between a plurality of clients, the system comprising:
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a PTT over cellular (Poc) server for performing signaling and bearer handling for a PTT service, signaling for PTT to conference switchover, and bearer setup between the clients and a mixer for media processing for the conference;
the mixer for performing a media mixing function for the conference service, and allocating media resources to the clients;
a conference server for processing signaling for the conference, and interworking with the mixer to allocate a media channel for the clients; and
a plurality of user equipment (UE) that each serve as one of the plurality of clients. - View Dependent Claims (13, 14)
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15. A user equipment (UE) equipped with a client for providing push-to-talk (PTT) so as to conference in a mobile communication network, the UE comprising:
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a PTT service unit for processing a function of the client on the basis of a main control task of a real-time operating system; and
constituent elements in a physical layer and a medium access control (MAC) layer, for performing communication in association with the PTT service unit.
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16. A method for switching over a unidirectional communication mode to a bidirectional communication mode during a push-to-talk (PTT) session between a plurality of user equipments (UEs) serving as clients in a mobile communication network including a PTT over cellular (PoC) server, the method comprising the steps of:
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sending, by one of the UEs, a message for requesting bidirectional communication to the PoC server;
switching over, by the PoC server, the unidirectional communication mode to the bidirectional communication mode using a mixing function; and
sending, by the PoC server, an indication for enabling all PoC clients to substantially simultaneously talk to the UE, which is a PoC client, through a preset real-time transport protocol (RTP) channel. - View Dependent Claims (17, 18, 19, 20)
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21. A system for switching a unidirectional communication mode to a bidirectional communication mode during a push-to-talk (PTT) session between a plurality of clients through a mobile communication network, the system comprising:
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a PTT over cellular (PoC) server for performing signaling and bearer handling for a PTT service, and performing signaling for switching over the unidirectional communication mode to the bidirectional communication mode during the PTT session; and
a user equipment (UE) that serves as the client. - View Dependent Claims (22, 23, 24, 25)
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26. A user equipment (UE) equipped with a client for switching a unidirectional communication mode to a bidirectional communication mode during a push-to-talk (PTT) session in a mobile communication network, the UE comprising:
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a PTT service unit for processing a function of the client on the basis of a main control task of a real-time operating system; and
constituent elements in a physical layer and a medium access control (MAC) layer, for performing communication in association with the PTT service unit.
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Specification