Push-to-talk wireless telecommunications system utilizing a voice-over-IP network
First Claim
1. A method for user activation of push-to-talk (PTT) service in a wireless communication network, comprising:
- initiating a session with a PTT Server wherein a user joins a group;
registering a contact for the user;
wherein the contact for the user is the PTT Server;
notifying members of the group of other members'"'"' presence wherein notifying members of the group of other members'"'"' presence includes;
requesting notification from a SIP Registrar by a presence server of users registering or deregistering SIP URL of the group as a contact;
notifying the presence server by the SIP Registrar of said registrations and deregistrations;
requesting from the presence server by members of the group information related to the presence of other group members;
notifying group members of said information related to the presence of other group members.
3 Assignments
0 Petitions
Accused Products
Abstract
A method and system to provide push-to-talk from one user to another in a wireless packet data telecommunications network is described. The system may include: a wireless communication network including push-to-talk (PTT) functionality, with a Session Initiation Protocol (SIP) Proxy Server; a SIP Registrar and Location Server operable to store contact addresses of active mobile devices; a Realtime Transport Protocol (RTP) Media Gateway (PTT Server) operable to function as a call endpoint for each of a plurality of mobile devices wherein the plurality of mobile devices are segmented into membership groups, the PTT Server further operable to multicast a communication from one member of the group to the other members of the group; and an Internet Protocol (IP) network interconnecting the SIP Proxy server, the SIP Registrar and Location Server, and the PTT Server.
374 Citations
20 Claims
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1. A method for user activation of push-to-talk (PTT) service in a wireless communication network, comprising:
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initiating a session with a PTT Server wherein a user joins a group; registering a contact for the user;
wherein the contact for the user is the PTT Server;notifying members of the group of other members'"'"' presence wherein notifying members of the group of other members'"'"' presence includes; requesting notification from a SIP Registrar by a presence server of users registering or deregistering SIP URL of the group as a contact; notifying the presence server by the SIP Registrar of said registrations and deregistrations; requesting from the presence server by members of the group information related to the presence of other group members; notifying group members of said information related to the presence of other group members. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computer program, stored in a computer readable medium, for user activation of push-to-talk (PTT) service in a wireless communication network, the computer program comprising:
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instructions for initiating a session with a PTT Server when a user joins a group; instructions for registering a contact for the user;
wherein the contact for the user is the PTT Server;instructions for notifying members of the group of other members'"'"' presence, wherein the instructions for notifying members of the group of other members'"'"' presence includes; instructions for requesting notification from a SIP Registrar by a presence server of users registering or deregistering SIP URL of the group as a contact; instructions for notifying the presence server by the SIP Registrar of said registrations and deregistrations; instructions for requesting from the presence server by members of the group information related to the presence of other group members; and instructions for notifying group members of said information related to the presence of other group members. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification