Method and apparatus for frequency scan in Narrow Band—Internet of Things (NB-IoT) systems
First Claim
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1. A method for wireless communication by a User Equipment (UE), comprising:
- searching for a cell on a plurality of frequency rasters based on a multi-stage search,wherein the UE, in each stage of the multi-stage search, is configured to search the plurality of frequency rasters for a different dwell time, the dwell time corresponding to an amount of time the UE searches a frequency raster for, wherein the dwell time for each stage of the multi-stage search is configured to search cells associated with a different range of Signal to Noise Ratios (SNRs), wherein the UE searches the plurality of frequency rasters one stage at a time starting from a stage corresponding to the smallest dwell time and in ascending order of dwell times; and
detecting a cell on at least one of the plurality of frequency rasters based on the searching.
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Abstract
Techniques for efficient and accurate frequency scans in Narrow Band-Internet of Things (NB-IoT) systems are provided. In an example, a user equipment (UE) searches for a cell on at least one of a plurality of frequency rasters based on a multi-stage search technique, wherein each stage of the multi-stage search searches the at least one frequency raster based on a different set of search parameters. The UE detects a cell on at least one of the frequency rasters based on the searching.
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Citations
25 Claims
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1. A method for wireless communication by a User Equipment (UE), comprising:
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searching for a cell on a plurality of frequency rasters based on a multi-stage search, wherein the UE, in each stage of the multi-stage search, is configured to search the plurality of frequency rasters for a different dwell time, the dwell time corresponding to an amount of time the UE searches a frequency raster for, wherein the dwell time for each stage of the multi-stage search is configured to search cells associated with a different range of Signal to Noise Ratios (SNRs), wherein the UE searches the plurality of frequency rasters one stage at a time starting from a stage corresponding to the smallest dwell time and in ascending order of dwell times; and detecting a cell on at least one of the plurality of frequency rasters based on the searching. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An apparatus for wireless communication by a User Equipment (UE), comprising:
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means for searching for a cell on a plurality of frequency rasters based on a multi-stage search, wherein the means for searching, in each stage of the multi-stage search, is configured to search the plurality of frequency rasters for a different dwell time, the dwell time corresponding to an amount of time a frequency raster is searched for, wherein the dwell time for each stage of the multi-stage search is configured to search cells associated with a different range of Signal to Noise Ratios (SNRs), wherein the means for searching searches the plurality of frequency rasters one stage at a time starting from a stage corresponding to the smallest dwell time and in ascending order of dwell times; and means for detecting a cell on at least one of the plurality of frequency rasters based on the searching.
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24. An apparatus for wireless communication by a User Equipment (UE), comprising:
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at least one processor configured to; search for a cell on of a plurality of frequency rasters based on a multi-stage search, wherein the at least one processor is configured to, in each stage of the multi-stage search, search the plurality of frequency rasters for a different dwell time, the dwell time corresponding to an amount of time the UE searches a frequency raster for, wherein the dwell time for each stage of the multi-stage search is configured to search cells associated with a different range of Signal to Noise Ratios (SNRs), wherein the plurality of frequency rasters are searched one stage at a time starting from a stage corresponding to the smallest dwell time and in ascending order of dwell times; and detect a cell on at least one of the plurality of frequency rasters based on the searching; and a memory coupled to the at least one processor.
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25. A non-transitory computer-readable medium for wireless communication by a User Equipment (UE), the computer-readable medium storing instructions which when processed by at least one processor performs a method comprising:
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searching for a cell on of a plurality of frequency rasters based on a multi-stage search, wherein the searching comprises, in each stage of the multi-stage search, searching the plurality of frequency rasters for a different dwell time, the dwell time corresponding to an amount of time a frequency raster is searched for, wherein the dwell time for each stage of the multi-stage search is configured to search cells associated with a different range of Signal to Noise Ratios (SNRs), wherein the plurality of frequency rasters are searched one stage at a time starting from a stage corresponding to the smallest dwell time and in ascending order of dwell times; and detecting a cell on at least one of the plurality of frequency rasters based on the searching.
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Specification