Subframe shift for full-duplex base station in TD-LTE systems

This paper proposes a subframe shift method to provide the full-duplex operation for the full-duplex base station (BS) in the current time-division long term evolution (TD-LTE) systems. For the full-duplex operation using the proposed subframe shift, we also propose a frame structure for the simultaneous transmission and reception of full-duplex BS operating in the current TD-LTE system and a signaling method for the downlink channel quality informations using the proposed subframe shift method based on the interference from the co-scheduled uplink channel. The proposed method shows a gain of approximately 50% in average system throughput and provides the access to the full-duplex BS for the half-duplex users as well as the full-duplex users in the current TD-LTE systems.

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