Invention Grant
- Patent Title: Synchronization of front-end and baseband units in wireless communications device by wirelessly transmitting clock signal therebetween
- Patent Title (中): 在无线通信设备中通过无线传输时钟信号来同步前端和基带单元
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Application No.: US12729585Application Date: 2010-03-23
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Publication No.: US08768285B2Publication Date: 2014-07-01
- Inventor: Takahiko Kishi , Hiroki Okada
- Applicant: Takahiko Kishi , Hiroki Okada
- Applicant Address: JP Toyota
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Toyota
- Agency: Oliff PLC
- Priority: JP2009-072099 20090324
- Main IPC: H04B7/02
- IPC: H04B7/02 ; H04B7/04 ; H04B7/08 ; H04B1/40 ; H04B1/16 ; H04W56/00 ; H04B7/00

Abstract:
A wireless device includes a baseband unit and front-end units that are provided in individual housings. The baseband unit and the front-end units are connected to each other by wire. A transmitter for synchronization that converts a signal based on a reference clock into a radio signal and transmits the radio signal as a clock synchronization signal is provided in any one of the housings, and receivers for synchronization that receive the signal for the clock synchronization and PLLs that generate a clock synchronized with a reference clock signal which is obtained from the received clock synchronization signal are provided in the housings other than the housing having the transmitter provided therein. In order to simultaneously process a plurality of wireless devices having different symbol rates, it is preferable to provide the transmitter, the receiver, and the PLL for each reference clock.
Public/Granted literature
- US20100248644A1 WIRELESS DEVICE Public/Granted day:2010-09-30
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