Enhanced hybrid automatic repeat request for wireless communications
This disclosure describes systems, methods, and devices related to an enhanced hybrid automatic repeat request (HARQ). A device may determine two or more HARQ medium access control (MAC) frames. The device may determine a difference between a first number of bits of a physical layer (PHY) codeword and a second number of bits of a first HARQ MAC frame of the two or more HARQ MAC frames. The device may generate, based on the difference, a third number of bits, wherein the first number of bits is equal to a sum of the second number of bits and the third number of bits. The device may generate an aggregated MAC frame comprising the first HARQ MAC frame, the third number of bits, and a second HARQ MAC frame of the two or more HARQ MAC frames. The device may send the aggregated MAC frame.
1. A device, the device comprising processing circuitry coupled to storage, the processing circuitry configured to:
determine two or more hybrid automatic repeat request (HARQ) medium access control (MAC) frames;
determine a difference between a first number of bits of a physical layer (PHY) codeword and a second number of bits of a first HARQ MAC frame of the two or more HARQ MAC frames;
generate, based on a comparison of the difference to a threshold number of bits greater than zero bits, a third number of bits, wherein the first number of bits is equal to a sum of the second number of bits and the third number of bits;
generate an aggregated MAC frame comprising the first HARQ MAC frame, the third number of bits, and a second HARQ MAC frame of the two or more HARQ MAC frames; and
cause to send the aggregated MAC frame.
2. The device of claim 1 , wherein the third number of bits are padding bits.
3. The device of claim 2 , wherein the processing circuitry is further configured to determine that the difference is less than the threshold number of bits, wherein to generate the padding bits is based at least in part on the determination that the difference is less than the threshold number of bits.
4. The device of claim 1 , wherein the third number of bits are associated with a non-HARQ MAC frame.
5. The device of claim 4 , wherein the processing circuitry is further configured to determine that the difference is greater than the threshold number of bits, wherein to generate the third number of bits associated with the non-HARQ MAC frame is based at least in part on the determination that the difference is greater than the threshold number of bits.
6. The device of claim 1 , wherein the third number of bits are associated with control information.
7. The device of claim 6 , wherein the processing circuitry is further configured to determine that the difference is greater than the threshold number of bits, wherein to generate the third number of bits associated with the control information is based at least in part on the determination that the difference is greater than the threshold number of bits.
8. The device of claim 1 , wherein the first HARQ MAC frame comprises an indication that the third number of bits are associated with padding bits, a non-HARQ MAC frame, or control information.
9. The device of claim 1 , further comprising a transceiver configured to transmit and receive wireless signals, the wireless signals comprising the aggregated MAC frame.
10. The device of claim 9 , further comprising an antenna coupled to the transceiver to cause to send the frame.
11. A non-transitory computer-readable medium storing computer-executable instructions which when executed by one or more processors result in performing operations comprising:
determining two or more hybrid automatic repeat request (HARQ) medium access control (MAC) frames;
determining a difference between a first number of bits of a physical layer (PHY) codeword and a second number of bits of a first HARQ MAC frame of the two or more HARQ MAC frames;
generating, based on a comparison of the difference to a threshold number of bits greater than zero bits, a third number of bits, wherein the first number of bits is equal to a sum of the second number of bits and the third number of bits;
generating an aggregated MAC frame comprising the first HARQ MAC frame, the third number of bits, and a second HARQ MAC frame of the two or more HARQ MAC frames; and
causing to send the aggregated MAC frame.
12. The non-transitory computer-readable medium of claim 11 , wherein the third number of bits are padding bits.
13. The non-transitory computer-readable medium of claim 12 , the operations further comprising determining that the difference is less than the threshold number of bits, wherein generating the padding bits is based at least in part on the determination that the difference is less than the threshold number of bits.
14. The non-transitory computer-readable medium of claim 11 , wherein the third number of bits are associated with a non-HARQ MAC frame.
15. The non-transitory computer-readable medium of claim 14 , the operations further comprising determining that the difference is greater than the threshold number of bits, wherein generating the third number of bits associated with the non-HARQ MAC frame is based at least in part on the determination that the difference is greater than the threshold number of bits.
16. The non-transitory computer-readable medium of claim 11 , wherein the third number of bits are associated with control information.
17. The non-transitory computer-readable medium of claim 16 , the operations further comprising determining that the difference is greater than the threshold number of bits, wherein generating the third number of bits associated with the control information is based at least in part on the determination that the difference is greater than the threshold number of bits.
18. A method comprising:
determining, by processing circuitry of a device, two or more hybrid automatic repeat request (HARQ) medium access control (MAC) frames;
determining a difference between a first number of bits of a physical layer (PHY) codeword and a second number of bits of a first HARQ MAC frame of the two or more HARQ MAC frames;
generating, based on a comparison of the difference to a threshold number of bits greater than zero bits, a third number of bits, wherein the first number of bits is equal to a sum of the second number of bits and the third number of bits;
generating an aggregated MAC frame comprising the first HARQ MAC frame, the third number of bits, and a second HARQ MAC frame of the two or more HARQ MAC frames; and
causing to send the aggregated MAC frame.
19. The method of claim 18 , wherein generating the aggregated MAC frame comprises generating an indication that the third number of bits are associated with padding bits, a non-HARQ MAC frame, or control information.
20. The method of claim 18 , further comprising comparing the difference to a threshold number of bits, where generating the third number of bits is based at least in part on the comparison.