RADIO BASE STATION, USER TERMINAL AND RADIO COMMUNICATION METHOD
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United States of America Patent
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Issued Date -
Dec 24, 2015
app pub date -
Dec 20, 2013
filing date -
Jan 24, 2013
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Abandoned
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Abstract
In order to compensate for frequency errors even when introducing a new carrier, the present invention provides a radio base station having a configuring section that configures a first carrier type subframe in which cell-specific reference signals are mapped at a predetermined density, and a second carrier type subframe in which cell-specific reference signals are mapped at a density that is lower than the density of the first carrier type subframe; a generating section that, when configuring the second carrier type subframe, generates at least a synchronization signal to use for frequency synchronization; and a transmitting section that transmits association information for associating the synchronization signal with an other downlink signal that is transmitted in the second carrier type subframe.
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