Methods and apparatus for waveform design and signaling for energy harvesting
摘要
說明書
From an EH WTRU perspective, it receives in a first step a known signal/sequence from the serving BS, uses a portion of it to measure the signal strength, and, if it is above a certain threshold, it backscatters the remaining portion of the signal/sequence to the BS. The EH WTRU uses the number of times the received known signal/sequence was above a specific threshold within a specific period of time to determine its CQI value. Alternatively, it might determine the CQI value based on the reception of another known signal/sequence transmitted from the serving BS. The EH WTRU can then use the determined CQI value and signaled parameters in a received control message in addition to any preconfigured parameters to configure its feedback transmission characteristics, e.g., use a mapping function to determine the time slot and subcarrier index to be used for feedback transmission based on its unique ID, group ID, TDM/FDM/CDM configuration, or any other parameter. The EH WTRU can include at least one bit in its feedback transmission to indicate the end of a message.
