Pre-communication for relay base stations in wireless communication

摘要

Providing for wireless communication involving supplemental wireless nodes is described herein. By way of example, prior signaling is employed between a macro base station and a set of associated supplemental nodes to support pending wireless communication with a user terminal. In some aspects, the prior signaling can include control or data traffic transmitted to or received from the user terminal. In addition, the supplemental nodes can synchronize transmission or reception of the control or data traffic transmissions with similar transmission or reception of the macro base station. In some aspects, the supplemental nodes can also replicate pilot signal transmissions on OFDM symbols employed by the macro base station for pilot signals, to give consistent downlink channel for both traffic and pilot signals. Accordingly, the user terminal observes consistent pilot transmissions over various time slots, as well as concurrent traffic transmissions that can generally be decoded with a common reference signal.

主权项

1. A method for employing a half duplex supplemental wireless node (HD-SWN) in wireless communication, comprising:
transmitting a relay pilot signal to a user equipment (UE) on a first set of orthogonal frequency division multiplex (OFDM) symbols in a subframe; receiving from a base station a wireless signal on a second set of OFDM symbols within the subframe, at least one OFDM symbol of the second set of OFDM symbols being interposed between at least two OFDM symbols of the first set of OFDM symbols that are non-contiguous in time; obtaining a channel quality indicator (CQI) or a precoding matrix indicator (PMI) from the UE served by the HD-SWN, the CQI or the PMI comprising a measurement of a controlling pilot signal transmitted by the base station and observed at the UE; forwarding the CQI or the PMI to the base station to facilitate estimating a modulation and coding scheme (MCS) for transmitting the relay pilot signal; receiving the MCS from the base station; transmitting the relay pilot signal in accordance with the MCS; and receiving a second CQI or a second PMI comprising a measurement of a concurrent transmission of the controlling pilot and the relay pilot signal as observed at the UE.