METHOD AND APPARATUS FOR CONFIGURING DEMODULATION REFERENCE SIGNAL IN LTE-ADVANCED NETWORKS

摘要

Example implementations described herein are directed to systems and methods of using the Demodulation Reference Signal (DMRS) in a manner to reduce the DMRS overhead in the Long Term Evolution (LTE)-Advanced downlink. In example implementations, an enhanced node B (eNodeB) transmits the DMRS only in some of the Resource Blocks (RBs) that are scheduled for a User Equipment (UE). The frequency of which the DMRS is transmitted is determined by the eNodeB based on one or more attributes of the UE and signaled to the UE via Radio Resource Control (RRC) signaling. At the UE receiver, the Physical Downlink Shared Channel (PDSCH) is demodulated based on the received DMRS configuration. Example implementations can thereby reduce the DMRS overhead by avoiding DMRS transmission in some subframes.