Transmit and Receive Tracking Reference Signals in NRC-LTE Devices

摘要

Tracking reference signal designs for deployments without continuous reference signal transmission are described. The tracking reference signal may extend from the synchronization signal block in the frequency domain and may occupy a subset or all of the symbol periods of the synchronization signal block. The tracking reference signal may have the same subcarrier spacing as the synchronization signal and may be punctured in the frequency domain. Alternatively, the tracking reference signal may include a common control reference signal transmitted periodically as a paired reference signal in the data channel. Common control reference signals and paired reference signals may be transmitted regardless of the presence of control or data. For improved tracking after a transition to connected mode or a long discontinuous reception (DRX) cycle, a slot containing tracking reference signals may be repeated, or an additional tracking reference signal pattern may be transmitted.