Base station device

Details Base station device Base station device

H - Electricity

04

W

H04W 56/00 (2009.01) H04J 11/00 (2006.01) H04L 7/00 (2006.01)

Patent

CA 2729631

While a clock generated by a built-in clock generator is used as a reference signal for determining a carrier frequency of a transmit signal, carrier frequency synchronization is achieved between base stations. A base station device is configured to perform wireless communication with a terminal device. In the base station device, accuracy of a carrier frequency of an OFDM signal is affected by accuracy of a clock frequency generated by a built-in clock generator 18. The base station device receives an OFDM signal transmitted from another base station device while transmission to the terminal device is stopped, estimates a carrier frequency offset of the OFDM signal, and corrects a carrier frequency of an OFDM signal to be transmitted to the terminal device.

Selon l'invention, il est possible de synchroniser des fréquences porteuses entre des stations de base tout en utilisant une horloge générée par un générateur d'horloge incorporé en tant que signal de référence qui décide la fréquence porteuse d'un signal de transmission. Le dispositif de station de base est configuré de telle manière qu'une radiocommunication est effectuée avec un dispositif terminal. Dans le dispositif de station de base, la précision de la fréquence porteuse du signal OFDM est affectée par la précision de la fréquence d'horloge générée par le générateur d'horloge incorporé (18). Le dispositif de station de base reçoit un signal OFDM émis par une autre station de base pendant que la transmission vers des dispositifs terminaux est suspendue, estime le décalage de fréquence porteuse du signal OFDM, et corrige la fréquence porteuse du signal OFDM devant être transmis au dispositif terminal.

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