Rate-matching scheme for control channels using polar codes
AssigneeQUALCOMM Incorporated
InventorsChanglong Xu, Chao Wei, Jing Jiang, Gaojin Wu, Hari Sankar, Jilei Hou
Life of this patent
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Abstract
Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for rate-matching control channels using polar codes. An exemplary method generally includes encoding a stream of bits using a polar code, determining a size of a circular buffer for storing the encoded stream of bits based, at least in part, on a minimum supported code rate and a control information size, and performing rate-matching on stored encoded stream of bits based, at least in part, on a mother code size, N, and a number of coded bits for transmission, E.
Claims44
A method of wireless communications by a first wireless communication device, comprising:
- encoding a stream of bits using a polar code;
- storing the encoded stream of bits in a circular buffer, wherein a size of the circular buffer is based on a minimum supported code rate (Rmin) and a number of information bits (K);
- performing rate-matching on the encoded stream of bits stored in the circular buffer based on a code size (N) and a number of coded bits for transmission (E);
- and
- transmitting the rate-matched encoded stream of bits in a wireless network to a receiving device.
A non-transitory computer-readable medium, comprising:
- instructions that, when executed by a processor of a first wireless communication device, cause the first wireless communication device to:
- encode a stream of bits using a polar code;
- store the encoded stream of bits in a circular buffer, wherein a size of the circular buffer is based on a minimum supported code rate (Rmin) and a number of information bits (K);
- perform rate-matching on the encoded stream of bits stored in the circular buffer based on a code size (N) and a number of coded bits for transmission (E);
- and
- transmit the rate-matched encoded stream of bits in a wireless network to a receiving device.
A first wireless communication device, comprising:
- a memory comprising executable instructions;
- a processor in data communication with the memory and configured to execute the executable instructions and cause the first wireless communication device to:
- encode a stream of bits using a polar code;
- store the encoded stream of bits in a circular buffer, wherein a size of the circular buffer is based on a minimum supported code rate (Rmin) and a number of information bits (K);
- perform rate-matching on the encoded stream of bits stored in the circular buffer based on a code size (N) and a number of coded bits for transmission (E);
- and
- transmit the rate-matched encoded stream of bits in a wireless network to a receiving device.
A first wireless communication device, comprising:
- means for encoding a stream of bits using a polar code;
- means for storing the encoded stream of bits in a circular buffer, wherein a size of the circular buffer is based on a minimum supported code rate (Rmin) and a number of information bits (K);
- means for performing rate-matching on the encoded stream of bits stored in the circular buffer based on a code size (N) and a number of coded bits for transmission (E);
- and
- means for transmitting the rate-matched encoded stream of bits in a wireless network to a receiving device.
Dependencies are inferred from the claim text.