Cyclic redundancy check length management
AssigneeQUALCOMM Incorporated
InventorsWanshi Chen, Peter Gaal, Tingfang Ji
Life of this patent
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Abstract
Certain aspects of the present disclosure provide methods and apparatus for managing cyclic redundancy check field lengths in wireless communications. An exemplary method generally includes determining a size of a cyclic redundancy check (CRC) field, from a plurality of possible sizes for a given type of physical wireless channel, to be used for a transmission to be sent on the physical wireless channel, and performing communication based on the transmission on the physical wireless channel with the CRC field of the determined size.
Claims26
A method for wireless communications, comprising:
- determining a cyclic redundancy check (CRC) length for a given type of control channel to be used for a transmission of the control channel of the given type, wherein:
- when an allocation in a physical downlink control channel (PDCCH) received from a remote device indicates that a parameter of the transmission is greater than or equal to a threshold, the CRC length is determined to be a first CRC length;
- and
- when the allocation in the PDCCH received from the remote device indicates that the parameter of the transmission is less than the threshold, the CRC length is determined to be a second CRC length smaller than the first CRC length;
- and
- communicating with a wireless device via the transmission of the control channel with the determined CRC length.
An apparatus for wireless communications, comprising:
- at least one processor configured to:
- determine a cyclic redundancy check (CRC) length for a given type of control channel, to be used for a transmission of the control channel of the given type, wherein:
- when an allocation in a physical downlink control channel (PDCCH) received from a remote device indicates that a parameter of the transmission is greater than or equal to a threshold, the CRC length is determined to be a first CRC length;
- and
- when the allocation in the PDCCH received from the remote device indicates that the parameter of the transmission is less than the threshold, the CRC length is determined to be a second CRC length smaller than the first CRC length;
- and
- communicate with a wireless device via the transmission of the control channel with the determined CRC length;
- and
- a memory coupled with the at least one processor.
An apparatus for wireless communications, comprising:
- means for determining a cyclic redundancy check (CRC) length, from a plurality of possible CRC lengths for a given type of control channel, to be used for a transmission of the control channel of the given type, wherein determining the CRC length comprises:
- when an allocation in a physical downlink control channel (PDCCH) received from a remote device indicates that a parameter of the transmission is greater than or equal to a threshold, the CRC length is determined to be a first CRC length;
- and
- when the allocation in the PDCCH received from the remote device indicates that the parameter of the transmission is less than the threshold, the CRC length is determined to be a second CRC length smaller than the first CRC length;
- and
- means for communicating with a wireless device via the transmission of the control channel with the determined CRC length.
A non-transitory computer readable medium storing computer executable code, the computer executable code, when executed by a processing system, causes the processing system to perform operations comprising:
- determining a cyclic redundancy check (CRC) length, from a plurality of possible CRC lengths for a given type of control channel, to be used for a transmission of the control channel of the given type, wherein determining the CRC length comprises:
- when an allocation in a physical downlink control channel (PDCCH) received from a remote device indicates that a parameter of the transmission is greater than or equal to a threshold, the CRC length is determined to be a first CRC length;
- and
- when the allocation in the PDCCH received from the remote device indicates that the parameter of the transmission is less than the threshold, the CRC length is determined to be a second CRC length smaller than the first CRC length;
- and
- communicating with a wireless device via the transmission of the control channel with the determined CRC length.
Dependencies are inferred from the claim text.