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US 10,856,263 B2Granted
Randomized search space for downlink control channel
AssigneeQUALCOMM Incorporated
InventorsJing Sun, Heechoon Lee, Wanshi Chen
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Abstract
In order to improve the selection of search space candidates for a downlink control channel, an apparatus determines a set of decoding candidates of a lower aggregation level for a downlink control channel based on a random selection from a plurality of potential decoding candidates, wherein the plurality of potential decoding candidates are defined from a second set of decoding candidates of a higher aggregation level. The apparatus then attempts to decode the downlink control channel based on determined sets of decoding candidates of different aggregation levels. The downlink control channel may comprise a PDCCH.
Claims36
A method of wireless communication at a user equipment, comprising:
- determining a set of decoding candidates of a lower aggregation level for a downlink control channel based on a random selection from a plurality of potential decoding candidates, wherein the plurality of potential decoding candidates are defined from a second set of decoding candidates of a higher aggregation level, wherein the higher aggregation level comprises a highest aggregation level, and wherein a first number of decoding candidates comprised in a lower aggregation level is within an integer multiple of a second number of decoding candidates comprised in the highest aggregation level, wherein the integer is based on an aggregation level ratio between the highest aggregation level and the lower aggregation level;
- and
- attempting to decode the downlink control channel based on determined sets of decoding candidates of different aggregation levels.
An apparatus for wireless communication at a user equipment, comprising:
- means for determining a set of decoding candidates of a lower aggregation level for a downlink control channel based on a random selection from a plurality of potential decoding candidates, wherein the plurality of potential decoding candidates are defined from a second set of decoding candidates of a higher aggregation level, wherein the higher aggregation level comprises a highest aggregation level, and wherein a first number of decoding candidates comprised in a lower aggregation level is within an integer multiple of a second number of decoding candidates comprised in the highest aggregation level, wherein the integer is based on an aggregation level ratio between the highest aggregation level and the lower aggregation level;
- and
- means for attempting to decode the downlink control channel based on determined sets of decoding candidates of different aggregation levels.
An apparatus for wireless communication at a user equipment, comprising:
- a memory;
- and
- at least one processor coupled to the memory and configured to:
- determine a set of decoding candidates of a lower aggregation level for a downlink control channel based on a random selection from a plurality of potential decoding candidates, wherein the plurality of potential decoding candidates are defined from a second set of decoding candidates of a higher aggregation level, wherein the higher aggregation level comprises a highest aggregation level, and wherein a first number of decoding candidates comprised in a lower aggregation level is within an integer multiple of a second number of decoding candidates comprised in the highest aggregation level, wherein the integer is based on an aggregation level ratio between the highest aggregation level and the lower aggregation level;
- and
- attempt to decode the downlink control channel based on determined sets of decoding candidates of different aggregation levels.
3 more elements
A non-transitory computer-readable medium storing computer executable code for wireless communication at a user equipment, comprising code to:
- determine a set of decoding candidates of a lower aggregation level for a downlink control channel based on a random selection from a plurality of potential decoding candidates, wherein the plurality of potential decoding candidates are defined from a second set of decoding candidates of a higher aggregation level, wherein the higher aggregation level comprises a highest aggregation level, and wherein a first number of decoding candidates comprised in a lower aggregation level is within an integer multiple of a second number of decoding candidates comprised in the highest aggregation level, wherein the integer is based on an aggregation level ratio between the highest aggregation level and the lower aggregation level;
- and
- attempt to decode the downlink control channel based on determined sets of decoding candidates of different aggregation levels.
A method of wireless communication at a base station, comprising:
- selecting a set of decoding candidates of a lower aggregation level for a downlink control channel based on a random selection from a plurality of potential decoding candidates, wherein the plurality of potential decoding candidates are defined from a second set of decoding candidates of a higher aggregation level, wherein the higher aggregation level comprises a highest aggregation level, and wherein the second set of higher aggregation level decoding candidates comprises one or more augmented decoding candidates when a first number of decoding candidates comprised in a lower aggregation level is not within the integer multiple of a second number of decoding candidates comprised in the highest aggregation level, wherein the integer is based on an aggregation level ratio between the highest aggregation level and the lower aggregation level;
- and
- transmitting the downlink control channel based on selected sets of decoding candidates of different aggregation levels.
An apparatus for wireless communication at a user equipment, comprising:
- means for selecting a set of decoding candidates of a lower aggregation level for a downlink control channel based on a random selection from a plurality of potential decoding candidates, wherein the plurality of potential decoding candidates are defined from a second set of decoding candidates of a higher aggregation level, wherein the higher aggregation level comprises a highest aggregation level, and wherein the second set of higher aggregation level decoding candidates comprises one or more augmented decoding candidates when a first number of decoding candidates comprised in a lower aggregation level is not within the integer multiple of a second number of decoding candidates comprised in the highest aggregation level, wherein the integer is based on an aggregation level ratio between the highest aggregation level and the lower aggregation level;
- and
- means for transmitting the downlink control channel based on selected sets of decoding candidates of different aggregation levels.
An apparatus for wireless communication at a base station, comprising:
- a memory;
- and
- at least one processor coupled to the memory and configured to:
- select a set of decoding candidates of a lower aggregation level for a downlink control channel based on a random selection from a plurality of potential decoding candidates, wherein the plurality of potential decoding candidates are defined from a second set of decoding candidates of a higher aggregation level, wherein the higher aggregation level comprises a highest aggregation level, and wherein the second set of higher aggregation level decoding candidates comprises one or more augmented decoding candidates when a first number of decoding candidates comprised in a lower aggregation level is not within the integer multiple of a second number of decoding candidates comprised in the highest aggregation level, wherein the integer is based on an aggregation level ratio between the highest aggregation level and the lower aggregation level;
- and
- transmit the downlink control channel based on selected sets of decoding candidates of different aggregation levels.
3 more elements
A non-transitory computer-readable medium storing computer executable code for wireless communication at a base station, comprising code to:
- select a set of decoding candidates of a lower aggregation level for a downlink control channel based on a random selection from a plurality of potential decoding candidates, wherein the plurality of potential decoding candidates are defined from a second set of decoding candidates of a higher aggregation level, wherein the higher aggregation level comprises a highest aggregation level, and wherein the second set of higher aggregation level decoding candidates comprises one or more augmented decoding candidates when a first number of decoding candidates comprised in a lower aggregation level is not within the integer multiple of a second number of decoding candidates comprised in the highest aggregation level, wherein the integer is based on an aggregation level ratio between the highest aggregation level and the lower aggregation level;
- and
- transmit the downlink control channel based on selected sets of decoding candidates of different aggregation levels.
Dependencies are inferred from the claim text.