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US 12,149,466 B2Granted
Sounding reference signal sending method and related apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsYan Lin, Xiuyong Shen
Life of this patent
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Abstract
A method includes sequentially performing analog frequency conversion operations on a first digital frequency conversion signal and a second digital frequency conversion signal based on local oscillator signals at a same frequency, where the first digital frequency conversion signal corresponds to a first sounding reference signal (SRS) to be transmitted on a first carrier, and the second digital frequency conversion signal corresponds to a second SRS to be transmitted on a second carrier, transmitting the first SRS on the first carrier during a first time period, and transmitting the second SRS on the second carrier during a second time period, where the second time period is later than the first time period.
Claims20
A wireless communications apparatus, comprising:
- a local oscillator circuit configured to output first local oscillator signals;
- a digital frequency converter configured to:
- perform a digital frequency conversion operation on a to-be-transmitted signal to obtain a digital frequency conversion signal, wherein the digital frequency conversion signal comprises a first digital frequency conversion signal corresponding to a first sounding reference signal (SRS) to be transmitted on a first carrier in a first time period and a second digital frequency conversion signal corresponding to a second SRS to be transmitted on a second carrier in a second time period, wherein the digital frequency converter is adjusted in an intermediate time period between the first time period and the second time period;
- and
- output the digital frequency conversion signal;
- and
- a frequency mixer coupled to the local oscillator circuit and the digital frequency converter and configured to:
- sequentially receive the first digital frequency conversion signal and the second digital frequency conversion signal;
- and
- respectively perform analog frequency conversion operations on the first digital frequency conversion signal and the second digital frequency conversion signal based on the first local oscillator signals at a first frequency to transmit the first SRS on the first carrier during the first time period and to transmit the second SRS on the second carrier during the second time period,
- wherein the second time period is later than the first time period.
8 more elements
A sounding reference signal (SRS) sending method, comprising:
- performing a digital frequency conversion operation on a to-be-transmitted signal to obtain a digital frequency conversion signal, wherein the digital frequency conversion signal comprises a first digital frequency conversion signal corresponding to a first sounding reference signal (SRS) to be transmitted on a first carrier in a first time period and a second digital frequency conversion signal corresponding to a second SRS to be transmitted on a second carrier in a second time period, wherein the digital frequency converter is adjusted in an intermediate time period between the first time period and the second time period;
- sequentially performing analog frequency conversion operations on the first digital frequency conversion signal and the second digital frequency conversion signal based on local oscillator signals at a same frequency;
- transmitting the first SRS on the first carrier during the first time period;
- and
- transmitting the second SRS on the second carrier during the second time period,
- wherein the second time period is later than the first time period,
- wherein a sum of a frequency of the first digital frequency conversion signal and a frequency of each of the local oscillator signals is equal to a frequency of the first carrier, and
- wherein a sum of a frequency of the second digital frequency conversion signal and the frequency of each of the local oscillator signals is equal to a frequency of the second carrier.
5 more elements
A sounding reference signal (SRS) sending apparatus, comprising:
- a memory configured to store program instructions;
- and
- a processor coupled to the memory and configured to execute the program instructions to cause the SRS sending apparatus to:
- perform a digital frequency conversion operation on a to-be-transmitted signal to obtain a digital frequency conversion signal, wherein the digital frequency conversion signal comprises a first digital frequency conversion signal corresponding to a first sounding reference signal (SRS) to be transmitted on a first carrier in a first time period and a second digital frequency conversion signal corresponding to a second SRS to be transmitted on a second carrier in a second time period, wherein the digital frequency converter is adjusted in an intermediate time period between the first time period and the second time period;
- sequentially perform analog frequency conversion operations on the first digital frequency conversion signal and the second digital frequency conversion signal based on local oscillator signals with a same frequency;
- transmit the first SRS on the first carrier during the first time period;
- and
- transmit the second SRS on the second carrier in the second time period,
- wherein the second time period is later than the first time period,
- wherein a sum of a frequency of the first digital frequency conversion signal and a frequency of each of the local oscillator signals is equal to a frequency of the first carrier, and
- wherein a sum of a frequency of the second digital frequency conversion signal and the frequency of each of the local oscillator signals is equal to a frequency of the second carrier.
8 more elements
Dependencies are inferred from the claim text.