Method of configuring an aperiodic sounding reference signal

摘要

The present invention relates to a method of configuring an aperiodic sounding reference signal. In an embodiment of the method of configuring an aperiodic sounding reference signal, the parameters of the aperiodic sounding reference signal are categorized into two parts. The first part of parameters can be configured by radio resource control signaling, and the second part can be configured dynamically via the indication in downlink control information format 4. The second part of the parameters includes at most three of the following parameter set: cyclic shift, the number of antenna ports, carrier aggregation, sounding reference signal bandwidth, frequency-domain position, sounding reference signal hopping bandwidth, multi-shot sounding reference signal duration, and transmission comb. The first part of the parameters includes sounding reference signal configuration index and the remaining part of the parameter set. With the method of the present invention, the second part of the parameters of an aperiodic sounding reference signal can be flexibly configured to adapt to various application scenarios.

主权项

1. A method of configuring an aperiodic sounding reference signal by a base station in a mobile communication system, the method comprising:
transmitting a first radio resource control layer signaling to indicate configuration of a first part of parameters of the aperiodic sounding reference signal; transmitting a second radio resource control layer signaling to pre-define sets of parameter value combinations of a second part of the parameter set of the aperiodic sounding reference signal; transmitting an aperiodic sounding reference signal request field in downlink control information format 4 to select one of the pre-defined sets of parameter value combinations; wherein the second part of the parameter set comprises at least one and at most three of the following parameters: cyclic shift, the number of antenna ports, carrier aggregation, sounding reference signal bandwidth, frequency-domain position, sounding reference signal hopping switch, sounding reference signal hopping bandwidth, multi-shot sounding reference signal duration, and transmission comb; and wherein the first part of the parameter set comprises sounding reference signal configuration index and the parameters of the parameter set that are not included in the second part of the parameters.