Base station apparatus, wireless communication system and...

Details Base station apparatus, wireless communication system and... Base station apparatus, wireless communication system and...

2011-03-22

2011-03-22

Payne, David C (Department: 2611)

Pulse or digital communications

Spread spectrum

C455S062000, C455S561000

Reexamination Certificate

active

07912110

ABSTRACT:
A frequency band FC assigned to a first wireless communication system and the frequency bands F1, . . . , Fm assigned to a second wireless communication system are set up for a base station apparatus100. The base station apparatus100periodically performs a frequency detection process A to detect whether or not the frequency bands F1, . . . , Fm are usable for the communication with a mobile station201. When the base station apparatus100and the mobile station201are communicating, the base station apparatus determines whether or not the frequency band used for the communication should be changed from FC to F1, . . . , Fm in accordance with its communication status. If it is determined that the frequency band should be changed, the frequency band used for the communication is changed to the frequency band determined as usable through the frequency detection process A.

REFERENCES:
patent: 5805633 (1998-09-01), Uddenfeldt
patent: 2004/0127191 (2004-07-01), Matsunaga
patent: 2003-333648 (2003-11-01), None
patent: 2004-207839 (2004-07-01), None
Notification of Reasons for Refusal of JP 2006-20812 (Original).
Notification of Reasons for Refusal of JP 2006-20812 (Translated).

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