Adaptive transmissions in coordinated multiple point communications

摘要

Systems and methodologies are described that facilitate adaptively communicating data to wireless devices. An access point can precode a dedicated reference signal (DRS) for transmitting to a wireless device, and the wireless device can receive the precoded DRS. The wireless device can determine the precoder by estimating a channel of the DRS and can provide channel condition feedback to the access point. The access point can create data signals including a single or a burst of data transmissions according to the feedback and can precode the data signals using the same precoder. The wireless device can additionally decode the data signals using the precoder. Moreover, the access point can cycle through precoders according to a patterned, random, pseudo-random, and/or similar sequence.

主权项

1. A method performed by a wireless device, comprising:
receiving, from a plurality of access points, dedicated reference signals (DRSs) which are precoded using a first precoder; receiving a DRS-only transmission from the plurality of access points, the DRS-only transmission comprising a plurality of DRSs transmitted without data signals, wherein the DRSs of the DRS-only transmission are precoded using a second precoder and the DRS-only transmission indicates a change in precoders for at least one of the plurality of access points; determining a channel estimation average for the plurality of DRSs; receiving subsequent data signals which are precoded using the second precoder from the plurality of access points; and decoding the subsequent data signals based at least in part on the channel estimation average.