发明名称 |
SCANNING METHOD AND APPARATUS WHICH UTILIZE A CARRIER SIGNAL BANDWIDTH TEST |
摘要 |
<p>One illustrative method of scanning a radio frequency (RF) band (e.g. 850 MHz band) for valid RF carrier signals of a wireless communication network (e.g. a GSM network) includes the steps of monitoring an RF channel to receive a candidate RF carrier signal; identifying whether the candidate RF carrier signal is a valid RF carrier signal of the wireless communication network by estimating a bandwidth of the candidate RF carrier signal and, if the estimated bandwidth is different from a predetermined bandwidth associated with valid RF carrier signals of the wireless communication network, identifying that the candidate RF signal is not a valid RF carrier signal of the wireless communication network; and repeating the acts of monitoring and identifying for a next RF channel of a plurality of RF channels associated with the wireless communication network. Preferably, the RF bandwidth estimation is performed together with a system signal detection process (e.g. FCCH detection). Advantageously, the time required to scan the RF band is reduced.</p> |
申请公布号 |
EP2013991(B1) |
申请公布日期 |
2012.10.31 |
申请号 |
EP20070719560 |
申请日期 |
2007.04.17 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
SIMMONS, SEAN, B.;WU, HUAN;KEMENCZY, ZOLTAN |
分类号 |
H04B17/00;H03J1/00;H04W48/16 |
主分类号 |
H04B17/00 |
代理机构 |
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地址 |
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