Wireless base station, wireless communication system, and wireless communication method

a wireless communication system and wireless communication technology, applied in data switching networks, power management, high-level techniques, etc., can solve the problems of reducing the throughput of the entire wireless system, interfering between these signals, etc., and achieve the effect of preventing interference by pilot signals
US20150264696A1Inactive Publication Date: 2015-09-17KYOCERA CORP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
KYOCERA CORP
Publication Date
2015-09-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

When time at present is included in a high-traffic time period, an interference determining unit (37) determines that there is a possibility that a downlink signal to be received by any wireless terminal has interference with a pilot signal transmitted from a wireless base station. A pilot signal transmission control unit (40) controls the transmission of the pilot signal, which is included in an OFDMA frame or an OFDM frame. When it is determined that there is the possibility of interference, the pilot signal transmission control unit (40) stops the transmission of the pilot signal or reduces power of the pilot signal in a whole or a portion of a user data area.
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Description

CROSS-REFERENCING

[0001] The present application is a continuation of U.S. application Ser. No. 13 / 700,072, filed on Nov. 26, 2012, which claims the benefit of PCT Application No. PCT / JP2011 / 062113 filed on May 26, 2011, which claims the benefit of Japanese Application No. 2010-121889, filed on May 27, 2010. The content of each of the above applications is incorporated by reference herein in its entirety.TECHNICAL FIELD

[0002] The present invention relates to a wireless base station, a wireless communication system, and a wireless communication method, in particular, a technique for control of transmission of a pilot signal used for estimation and / or synchronization of a channel.BACKGROUND ART

[0003] In a wireless communication system, a plurality of communication devices transmit signals having the same frequency or frequencies close to each other. This may result in interference between these signals, disadvantageously. Such interference leads to decreased throughput in the entire wirel...

Claims

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