发明名称 |
Fast call setup in a CDMA dispatch system |
摘要 |
A quality dispatch service on a CDMA based wireless system. To achieve spectral efficiency and fast access for follow-up calls, in response to a request by a talkgroup member to have a group call established, the non-requesting (listening-only) members are allowed to establish a low-rate (non-voice) signaling link in the reverse direction (inbound) for the limited purpose of (i) providing forward power control information to the fixed infrastructure; (ii) requesting soft hand-off when required; and (iii) maintaining the correct reverse link power control to allow for fast channel access for a follow-on call. In accordance with the illustrative embodiment, the establishment of multiple inbound signaling links in a CDMA dispatch call occurs as a background process while beginning the voice communications immediately. |
申请公布号 |
US5914958(A) |
申请公布日期 |
1999.06.22 |
申请号 |
US19970959152 |
申请日期 |
1997.10.28 |
申请人 |
MOTOROLA, INC. |
发明人 |
CHINITZ, LEIGH M.;NEEDHAM, MICHAEL L.;WILSON, TIMOTHY J. |
分类号 |
H04B7/26;H04W4/06;H04W76/02;H04W84/08;(IPC1-7):H04J13/00 |
主分类号 |
H04B7/26 |
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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