CSI FEEDBACK IN LTE/LTE-ADVANCED SYSTEMS WITH UNLICENSED SPECTRUM

摘要

Channel state information (CSI) feedback in long term evolution (LTE) and LTE-Advanced (LTE-A) networks including contention-based shared unlicensed spectrum is disclosed in which a user equipment (UE) identifies at least one carrier utilizing a contention based radio frequency spectrum. The UE detects a transmission signal indicative of clear channel assessment (CCA) result information for the carrier and determines whether a reference signal for channel state information measurement is present in a subframe based on the detected transmission signal. The UE would transmit a measurement report based on this presence determination of the reference signal.

主权项

1. A method of wireless communication, comprising:
identifying, by a user equipment (UE), at least one carrier utilizing a contention based radio frequency spectrum; detecting a transmission signal indicative of clear channel assessment (CCA) result information for the at least one carrier; determining whether a reference signal for channel state information measurement is present in a subframe based on the detected transmission signal; and transmitting, by the UE, a measurement report, wherein the measurement report is based at least in part on the determining the reference signal is present.