发明名称 |
Scanning methods and apparatus for system acquisition |
摘要 |
<p>In one illustrative example, a system acquisition method suitable for use in W-CDMA utilizes a receiver having an automatic frequency control (AFC) circuit. A system acquisition scan is performed over a plurality of candidate frequencies in an RF band. During the system acquisition scan, a pilot signal of a system on one of the candidate frequencies is detected. When information of the system is successfully decoded, and the system is different from a requested system (e.g. not the RPLMN or HPLMN), the pilot signal of the system is assigned as a timing reference in the receiver for one or more remaining candidate frequencies of the system acquisition scan. Therefore, an AFC window time otherwise needed to converge on a remaining candidate frequency is not needed or reduced.</p> |
申请公布号 |
EP2117128(A1) |
申请公布日期 |
2009.11.11 |
申请号 |
EP20080156027 |
申请日期 |
2008.05.09 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
TOD, ANTHONY WILLIAM;PAVLOVICH, ANTON |
分类号 |
H04B1/7075;H04B1/707;H04W48/18 |
主分类号 |
H04B1/7075 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|