Configuration of sounding reference signal resources in an uplink transmission time interval
AssigneeQUALCOMM Incorporated
InventorsAlexandros Manolakos, Wanshi Chen, Tao Luo, Peter Gaal
Life of this patent
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Abstract
Methods, systems, and devices for wireless communication are described. A method may include receiving control signaling indicating a location for a sounding reference signal (SRS) resource in a transmission time interval (TTI), and transmitting an SRS in the indicated location in the TTI based on the received control signaling. Another method may include transmitting control signaling indicating a location for a SRS resource in a TTI, and receiving an SRS at the indicated location in the TTI based on the transmitted control signaling.
Claims19
A method for wireless communication by a user equipment (UE), comprising:
- receiving control signaling indicating a sounding reference signal (SRS) configuration in a transmission time interval (TTI), wherein the indicated configuration includes both a first symbol period that occurs no later than a symbol period for a demodulation reference signal (DMRS) of a physical uplink channel in the TTI and a second symbol period that occurs later than the physical uplink channel in the TTI;
- and
- transmitting a first SRS in the first symbol period and a second SRS in the second symbol period based at least in part on the received control signaling.
A method for wireless communication by a user equipment (UE), comprising:
- receiving control signaling indicating a first symbol location for a first sounding reference signal (SRS) in a transmission time interval (TTI) and a second symbol location for a second SRS within the TTI;
- determining, based on the control signaling, that the first symbol location and the second symbol location are adjacent symbol locations in time;
- and
- transmitting the first SRS in the first symbol location and the second SRS in the second symbol location based on the control signaling and the determination.
A method for wireless communication by a user equipment (UE), comprising:
- receiving control signaling indicating a symbol location for a sounding reference signal (SRS) and a symbol location for a demodulation reference signal (DMRS) in a transmission time interval (TTI);
- determining that the symbol locations for the SRS and DMRS are the same symbol location;
- adjusting a ratio of transmission power of pilot resource elements to transmission power of data resource elements within a bandwidth associated with the TTI based at least in part on determining that the UE is configured to simultaneously transmit the SRS and the DMRS in the symbol location;
- and
- generating a frequency division multiplexed signal by frequency division multiplexing the SRS and the DMRS;
- and
- transmitting the frequency division multiplexed signal in the symbol location based on the adjusted ratio.
A method for wireless communication at a base station, comprising:
- transmitting control signaling indicating a sounding reference signal (SRS) configuration in a transmission time interval (TTI), wherein the indicated configuration includes a first symbol period that occurs no later than a symbol period for a demodulation reference signal (DMRS) of a physical uplink channel in the TTI and a second symbol period that occurs later than the physical uplink channel in the TTI;
- and
- receiving a first SRS in the first symbol period and a second SRS in the second symbol period based at least in part on the transmitted control signaling.
An apparatus for wireless communication, comprising:
- a processor;
- memory in electronic communication with the processor;
- and
- instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
- receive control signaling indicating a sounding reference signal (SRS) configuration in a transmission time interval (TTI), wherein the indicated configuration includes both a first symbol period that occurs no later than a symbol period for a demodulation reference signal (DMRS) of a physical uplink channel in the TTI and a second symbol period that occurs later than the physical uplink channel in the TTI;
- and
- transmit an SRS in the first symbol period and the second symbol period based at least in part on the received control signaling.
Dependencies are inferred from the claim text.