发明名称 |
Locating a wireless user |
摘要 |
A plurality of antennas transmit a first spread spectrum signal having an associated code. The first spread spectrum signal is received at the wireless user. For each received first spread spectrum signal, a second spread spectrum signal is transmitted having an associated code having a same phase as that received first spread spectrum signal. The second spread spectrum signals are received at the plurality of antennas. A distance measurement is determined between each antenna and the wireless user based on in part a received timing of the second signals. The wireless user's location is determined based on in part the distance determinations. |
申请公布号 |
US8248988(B2) |
申请公布日期 |
2012.08.21 |
申请号 |
US20030663240 |
申请日期 |
2003.09.16 |
申请人 |
BOLGIANO D. RIDGELY;LAVEAN GILBERT E.;INTERDIGITAL TECHNOLOGY CORPORATION |
发明人 |
BOLGIANO D. RIDGELY;LAVEAN GILBERT E. |
分类号 |
G01S5/10;H04B7/216;G01S19/09;G01S19/46;H04B7/02;H04B7/04;H04B7/06;H04B7/08;H04B7/24;H04B7/26;H04L1/06;H04L9/32;H04W28/04;H04W56/00;H04W64/00 |
主分类号 |
G01S5/10 |
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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