Yu Jiang

TL;DR: In this paper, a radio base station is disclosed to communicate with a user terminal that is capable of using a licensed band and an unlicensed band and has a control section that controls the transmission of downlink signals in the unlicensed bands using LBT (Listen Before Talk), a selection section that selects the symbol to execute LBT, randomly, with equal probability, from a plurality of candidate symbols, and an acquiring section that acquires a measurement result, in which the received signal intensity in the LBT period is measured.

TL;DR: In this paper, an adaptive modulation and coding (AMC) method for a downlink shared channel was proposed, which supports high-order modulation schemes, and includes the steps of measuring channel quality based on a reference signal from the radio base station, acquiring a channel quality indicator to indicate the modulation scheme and the coding rate that are applicable to the downlink channel in the channel quality, from a table in which channel quality indicators, modulation schemes and coding rates are associated with each other.

TL;DR: In this paper, the authors present an approach to run LTE in an unlicensed band using LBT (Listen Before Talk) in a radio communication system (LAA) to run a radio base station to communicate with a user terminal.

TL;DR: In this paper, the authors propose a signaling of cell index information that is suitable for CoMP transmission/reception techniques, in which the indices of CoMP sets are incorporated in a physical downlink control channel that is shared between the multiple cells that carry out joint transmission.