Method and apparatus for sounding antennas in wireless communication
AssigneeQUALCOMM Incorporated
InventorsPeter Gaal, Wanshi Chen, Juan Montojo, Aleksandar Damnjanovic
Life of this patent
Estimating the term…
Abstract
Methods and apparatuses are provided that facilitate sounding antennas in wireless communication. In an aspect, a method for wireless communication includes determining at least one resource reserved for transmitting a demodulation reference signal and transmitting a sounding reference signal over the at least one resource. In another aspect, a method of wireless communication includes signaling a parameter related to sounding multiple antenna ports, receiving signals from a device over the multiple antenna ports, and estimating a channel related to the signals at least in part by removing a precoding from the signals.
Claims49
A method for wireless communication, comprising:
- determining at least one resource reserved for transmitting a demodulation reference signal (DM-RS);
- and
- transmitting a sounding reference signal (SRS) over the at least one resource for at least one antenna port that is not transmitting its corresponding DM-RS on the at least one resource to ensure one of:
- a SRS or DM-RS, related to each of antenna ports is transmitted.
An apparatus for wireless communication, comprising:
- means for determining at least one resource reserved for transmitting a demodulation reference signal (DM-RS);
- and
- means for transmitting a sounding reference signal (SRS) over the at least one resource for at least one antenna port that is not transmitting its corresponding DM-RS on the at least one resource to ensure one of:
- a SRS or DM-RS, related to each of antenna ports is transmitted.
An apparatus for wireless communication, comprising:
- at least one processor configured to:
- determine at least one resource reserved for transmitting a demodulation reference signal (DM-RS);
- and
- transmit a sounding reference signal (SRS) over the at least one resource;
- and
- a memory coupled to the at least one processor for at least one antenna port that is not transmitting its corresponding DM-RS on the at least one resource to ensure one of:
- a SRS or DM-RS, related to each of antenna ports is transmitted.
A computer program product comprising a non-transitory computer-readable storage medium, the computer-readable storage medium comprising:
- instructions for causing at least one computer to determine at least one resource reserved for transmitting a demodulation reference signal (DM-RS);
- and
- instructions for causing the at least one computer to transmit a sounding reference signal (SRS) over the at least one resource for at least one antenna port that is not transmitting its corresponding DM-RS on the at least one resource to ensure one of:
- a SRS or DM-RS, related to each of antenna ports is transmitted.
A method of wireless communication, comprising:
- signaling one or more parameters to a device, the one or more parameters being related to sounding multiple antenna ports, wherein the signaling the one or more parameters includes signaling one of a precoder or antenna port selection for sounding, a mapping of the precoder to one or more cyclic shifts, a periodicity for using the precoder, a mapping of the precoder to one or more subframes, and a power offset between using the precoder, and wherein the precoder corresponds to the precoding;
- receiving signals from the device over the multiple antenna ports;
- and
- estimating one or more channels related to the signals at least in part by removing a precoding from the signals.
An apparatus for wireless communication, comprising:
- means for signaling one or more parameters related to sounding multiple antenna ports to a device, wherein the signaling the one or more parameters includes signaling one of a precoder or antenna port selection for sounding, a mapping of the precoder to one or more cyclic shifts, a periodicity for using the precoder, a mapping of the precoder to one or more subframes, and a power offset between using the precoder, and wherein the precoder corresponds to the precoding;
- means for receiving signals from the device over the multiple antenna ports;
- and
- means for estimating one or more channels related to the signals at least in part by removing a precoding from the signals.
A computer program product comprising a non-transitory computer-readable storage medium, the computer readable storage medium comprising:
- instructions for causing at least one computer to signal one or more parameters related to sounding multiple antenna ports to a device, wherein the signaling the one or more parameters includes signaling one of a precoder or antenna port selection for sounding, a mapping of the precoder to one or more cyclic shifts, a periodicity for using the precoder, a mapping of the precoder to one or more subframes, and a power offset between using the precoder, and wherein the precoder corresponds to the precoding;
- instructions for causing the at least one computer to receive signals from the device over the multiple antenna ports;
- and
- instructions for causing the at least one computer to estimate one or more channels related to the signals at least in part by removing a precoding from the signals.
An apparatus for wireless communication, comprising:
- at least one processor configured to:
- signal one or more parameters related to sounding multiple antenna ports to a device, wherein the signaling the one or more parameters includes signaling one of a precoder or antenna port selection for sounding, a mapping of the precoder to one or more cyclic shifts, a periodicity for using the precoder, a mapping of the precoder to one or more subframes, and a power offset between using the precoder, and wherein the precoder corresponds to the precoding;
- receive signals from the device over the multiple antenna ports;
- and
- estimate one or more channels related to the signals at least in part by removing a precoding from the signals;
- and
- a memory coupled to the at least one processor.
Dependencies are inferred from the claim text.