发明名称 |
RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION SYSTEM, AND COMMUNICATION CONTROL METHOD |
摘要 |
<P>PROBLEM TO BE SOLVED: To select an optimal setting determining the cause of a communication error in a radio communication system in which a suitable setting is selected from plural levels of transmission power and plural modulation schemes. <P>SOLUTION: A radio communication device comprises: a communication error cause estimation unit which determines cause of a communication error from a reception power intensity of the next data communication when the communication error has occurred; means which determines that there is a high possibility of a communication error caused by insufficient reception power if the reception signal intensity is smaller than a preset threshold at which data can be received without an error, and determines that there is a high possibility of an error caused by radio wave interference if the reception signal intensity is larger than the threshold; an interference suppression-type transmission power control unit which decreases transmission power when communication is successful for a preset number of consecutive times; and means which increases transmission power if the communication error cause estimation unit has determined that there is a high possibility of a communication error caused by insufficient reception power, and maintains or decreases transmission power if the communication error cause estimation unit has determined that there is a high possibility of an error caused by radio wave interference. <P>COPYRIGHT: (C)2013,JPO&INPIT |
申请公布号 |
JP2012235372(A) |
申请公布日期 |
2012.11.29 |
申请号 |
JP20110103424 |
申请日期 |
2011.05.06 |
申请人 |
HITACHI LTD |
发明人 |
MURATA SHINJI;ICHINOSE YUJI;ARITA SETSUO;MASUKO HIDEAKI |
分类号 |
H04W52/20;H04W28/18;H04W52/24 |
主分类号 |
H04W52/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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