发明名称 |
Method and apparatus for facilitating a PTT session initiation using an IP-based protocol |
摘要 |
Various embodiments are described to address the need for providing substantially reduced PTT call setup times and more efficient wireless bandwidth utilization for PTT sessions utilizing an IP-based protocol. The use of non-IP messaging between an originating MS ( 101 ) and PCF ( 131 ) and a target MS ( 102 ) and PCF ( 132 ), the use of IP-based messaging between the PCFs, the use of access channel signaling by the originating MS, and the generation of SIP responses by a target PCF on behalf of the target MS are described. Embodiments incorporating some or all of these protocol changes, can provide either, or both, reduced end-to-end call setup time for PTT as it presently exists in IS-2000 systems or reduced bandwidth consumption.
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申请公布号 |
US2005169223(A1) |
申请公布日期 |
2005.08.04 |
申请号 |
US20040759440 |
申请日期 |
2004.01.16 |
申请人 |
CROCKER RONALD T.;HART THOMAS B.;HORVATH ROBERT |
发明人 |
CROCKER RONALD T.;HART THOMAS B.;HORVATH ROBERT |
分类号 |
G06F15/16;H04B7/155;H04B7/216;H04L29/06;H04W4/10;H04W76/02;H04W80/00;H04W80/04;H04W80/10;H04W84/08;(IPC1-7):H04B7/216 |
主分类号 |
G06F15/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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