发明名称 Method and apparatus for providing reference frequency aiding among peers operating in a direct communication mode
摘要 A mobile communication device (202) and peer mobile communication devices (204, 206) are capable of direct voice and data communication. The mobile communication device has a reference oscillator (104) which is used for generating operating frequencies, and is subject to frequency errors resulting from manufacturing tolerances, heat, and other error sources. The mobile communication device receives a frequency correction message (506) from a peer mobile communication device that has calibrated its reference oscillator. The frequency correction message contain offset information which is used by the mobile communication device to determine its offset (316) from a nominal frequency (302).
申请公布号 US7620403(B2) 申请公布日期 2009.11.17
申请号 US20050194010 申请日期 2005.07.29
申请人 MOTOROLA, INC. 发明人 KORNELUK JOSE E.;ANDERSON BOBBY D.;HAVERKAMP KRISTI A.;KLUG KEITH M.;SEGERSON CHARLES H.
分类号 H04W24/00;G01S1/00;H04B7/00;H04B7/12;H04B7/185;H04B15/00;H04J3/06;H04W4/00 主分类号 H04W24/00
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