Systems and methods for dynamically selecting a sub-carrier spacing
AssigneeSprint Spectrum L.P.
InventorsJustin Sungki Park, Saied Kazeminejad, Durga Prasad Satapathy
Life of this patent
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Abstract
A system for selecting a sub-carrier spacing includes an access node configured to deploy a radio air interface to provide wireless services to a plurality of wireless devices. The access node includes a processor configured to determine a value of at least one parameter relating to at least one of radio frequency impairment, mobility, and service latency. The processor is also configured to compare the value of the at least one parameter with a predetermined threshold. The processor is further configured to select the sub-carrier spacing from a plurality of sub-carrier spacings based on a result of the comparison.
Claims18
A system for selecting a sub-carrier spacing, comprising:
- an access node configured to deploy a radio air interface to provide wireless services to a plurality of wireless devices, the access node comprising:
- a processor configured to:
- determine a value of a radio frequency impairment, wherein the radio frequency impairment comprises at least one of a carrier frequency offset, a timing offset, a phase noise, and an IQ mismatch;
- compare the value of the radio frequency impairment with a predetermined threshold;
- and
- select the sub-carrier spacing from a plurality of sub-carrier spacings based on a result of the comparison, wherein
- a third sub-carrier spacing from the plurality of sub-carrier spacings is selected when the radio frequency impairment is greater than or equal to a second predetermined radio frequency impairment threshold, and
- wherein a first sub-carrier spacing is narrower than a second sub-carrier spacing, and the second sub-carrier spacing is narrower than the third sub-carrier spacing.
A method for selecting a sub-carrier spacing, comprising:
- determining a value of a radio frequency impairment, wherein the radio frequency impairment comprises at least one of a carrier frequency offset, a timing offset, a phase noise, and an IQ mismatch;
- comparing the value of the radio frequency impairment with a predetermined threshold;
- and
- selecting the sub-carrier spacing from a plurality of sub-carrier spacings based on a result of the comparison, wherein
- a third sub-carrier spacing from the plurality of sub-carrier spacings is selected when the radio frequency impairment is greater than or equal to a second predetermined radio frequency impairment threshold, and
- wherein a first sub-carrier spacing is narrower than a second sub-carrier spacing, and the second sub-carrier spacing is narrower than the third sub-carrier spacing.
A processing node for selecting a sub-carrier spacing, the processing node comprising a processor configured to perform operations comprising:
- determining a value of a radio frequency impairment, wherein the radio frequency impairment comprises at least one of a carrier frequency offset, a timing offset, a phase noise, and an IQ mismatch;
- comparing the value of the radio frequency impairment with a predetermined threshold;
- and
- selecting the sub-carrier spacing from a plurality of sub-carrier spacings based on a result of the comparison, wherein
- a third sub-carrier spacing from the plurality of sub-carrier spacings is selected when the radio frequency impairment is greater than or equal to a second predetermined radio frequency impairment threshold, and
- wherein a first sub-carrier spacing is narrower than a second sub-carrier spacing, and the second sub-carrier spacing is narrower than the third sub-carrier spacing.
Dependencies are inferred from the claim text.