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US 2019/0166589 A1Published application
Aggregation level specific pdcch modification
AssigneeQUALCOMM Incorporated
InventorsYang YANG, Jing JIANG, Jing SUN, Tao LUO, Peter GAAL, Gabi SARKIS, Joseph Binamira SORIAGA, Heechoon LEE, Wanshi CHEN
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Abstract
Certain aspects of the present disclosure relate to methods and apparatus for aggregation level specific PDCCH modification.
Claims31
A method for wireless communications by a user equipment (UE), comprising:
- receiving a physical downlink control channel (PDCCH) message transmitted using a decoding candidate for a first aggregation level comprising time and frequency resources that overlap with time and frequency resources of a decoding candidate for a second aggregation level;
- and
- decoding the PDCCH message in an aggregation level specific manner to confirm whether the PDCCH message was transmitted using the first or second aggregation level.
A method of wireless communications by a user equipment (UE), comprising:
- receiving a physical downlink control channel (PDCCH) message, wherein the PDCCH message spans a number control channel elements (CCEs), wherein the number of CCEs is based on an aggregation level associated with the message, wherein the PDCCH message includes at least a downlink control information (DCI) payload and cyclic redundancy check (CRC) bits;
- determining an aggregation level for the PDCCH message to use for decoding a physical downlink shared channel (PDSCH) message in the event of an ambiguity condition regarding the aggregation level for the PDCCH message;
- and
- decoding the PDSCH message in accordance with the determined aggregation level.
1 more element
A method for wireless communications by a network entity, comprising:
- generating coded bits for a physical downlink control channel (PDCCH) message for transmission at a first aggregation level, wherein the coded bits of the PDCCH message are generated in an aggregation level specific manner;
- and
- transmitting the PDCCH message to a user equipment (UE) using a decoding candidate for the first aggregation level comprising time and frequency resources that overlap with time and frequency resources of a decoding candidate for a second aggregation level.
A method of wireless communications, comprising:
- generating coded bits for a physical downlink control channel (PDCCH) message, wherein the PDCCH message includes at least a downlink control information (DCI) payload and cyclic redundancy check (CRC) bits;
- determining whether an ambiguity condition is present for a user equipment (UE) attempting to decode the PDCCH message based on an aggregation level used for the PDCCH message;
- modifying an attribute associated with at least one of the DCI payload, the PDCCH, or a physical downlink shared channel (PDSCH) based on the determination that the ambiguity condition is present;
- mapping the coded bits to control channel elements (CCEs) based at least in part on the aggregation level;
- and
- transmitting the PDCCH message.
3 more elements
Dependencies are inferred from the claim text.