GENERATING AND TRANSMITTING DEMODULATION REFERENCE SIGNALS

摘要

The present disclosure provides a solution which solves the problem of demodulation reference signal (DMRS) ambiguity by introducing separate, i.e. different DMRSs. This is especially the case for systems employing dynamic allocation of control and data signals to different PRBs.

主权项

1. A method of transmitting a demodulation reference signal (DMRS) in a wireless communication system, time-frequency resource elements (REs) being used in the wireless communication system for transmission of information, the method comprising:
generating at least one first receiver specific DMRS, the at least one first receiver specific DMRS being associated with a data channel; generating at least one second receiver specific DMRS, the at least one second receiver specific DMRS being associated with a control channel, the control channel being associated with the data channel, the at least one second receiver specific DMRS being different from the at least one first receiver specific DMRS; transmitting the at least one first receiver specific DMRS with the data channel, wherein time-frequency REs of a first physical resource block (PRB) are utilized for transmission of the data channel and the at least one first receiver specific DMRS, and time-frequency REs of the first PRB being utilized for transmission of the at least one first receiver specific DMRS locate in a first set of RE positions in a PRB; and transmitting the at least one second receiver specific DMRS with the control channel, wherein time-frequency REs of a second PRB are utilized for transmission of the control channel and the at least one second receiver specific DMRS, time-frequency REs of the second PRB being utilized for transmission of the at least one second receiver specific DMRS locate in a second set of RE positions in a PRB, and the second set of RE positions in a PRB overlap with the first set of RE positions in a PRB.