Communication of user specific control information in a wireless network
A wireless device generates a High Efficiency Signal B (HE-SIG-B) field by Block Convolution Code (BCC) encoding and rate-matching a BCC block of the HE-SIG-B field, generates a Physical Layer Protocol Data Unit (PPDU) including the HE-SIG-B field, and transmits the PPDU. A total number N is a total number of bits of the HE-SIG-B field that precede the BCC block, and is greater than 0. The BCC block has a puncturing pattern depending on the total number N. A wireless device receives a PPDU. The PPDU includes an HE-SIG-B field that includes an encoded BCC block. The wireless device de-rate-matches the encoded BCC block having a puncturing pattern depending on a total number N. The total number N is a total number of decoded bits of the HE-SIG-B field that preceded the BCC block, and the total number N is greater than 0.
1. A method performed by a wireless device, the method comprising:
creating, by the wireless device, an encoded field by Block Convolution Code (BCC) encoding a field including a plurality of BCC blocks;
generating, by the wireless device, a rate-matched field by:
rate-matching, according to a first puncturing pattern, a first BCC block of the encoded field, and
rate-matching, according to a second puncturing pattern different from the first puncturing pattern, a second BCC block of the encoded field,
wherein a code-rate of the first BCC block is equal to a code-rate of the second BCC block;
generating, by the wireless device, a Physical Layer Protocol Data Unit (PPDU) including the rate-matched field; and
transmitting, by the wireless device, the PPDU.
2. The method of claim 1 , further comprising:
determining the first puncturing pattern according to a first total number of bits in the rate-matched field that precede the first BCC block.
3. The method of claim 2 , further comprising:
determining the second puncturing pattern according to a second total number of bits in the rate-matched field that precede the second BCC block.
4. The method of claim 3 , wherein the second total number of bits in the rate-matched field that precede the second BCC block is greater than zero.
5. The method of claim 4 ,
wherein the rate-matched bits of the second BCC block have a code-rate of K/M, K and M being positive integers greater than zero, so that K bits of the second BCC block are encoded into M rate-matched bits of the second BCC block, and
wherein the second puncturing pattern depends on a remainder Z, the remainder Z being equal to the second total number of bits in the rate-matched field that precede the second BCC block modulo K.
6. The method of claim 5 , wherein the second puncturing pattern is equal to a basic puncturing pattern for the code-rate K/M left cyclic-shifted by the remainder Z.
7. The method of claim 6 , wherein BCC encoding the second BCC block includes:
generating a first set of encoded bits using a first polynomial, and
generating a second set of encoded bits using a second polynomial.
8. The method of claim 1 , wherein the rate-matched field is a High Efficiency Signal B (HE-SIG-B) field.
9. The method of claim 8 , wherein the first BCC block is a Common Info field.
10. The method of claim 9 , wherein the second BCC block corresponds to a per-station (per-STA) information field, the per-STA information field including information for one or two stations.
11. A method performed by a wireless device, the method comprising:
receiving, by the wireless device, a Physical Layer Protocol Data Unit (PPDU) including a rate-matched field, the rate matched field including a plurality of Block Convolution Code (BCC) blocks; and
generating, by the wireless device, a de-rate-matched field by:
de-rate-matching a first BCC block of the rate-matched field according to a first puncturing pattern, and
de-rate-matching a second BCC block of the rate-matched field according to a second puncturing pattern different from the first puncturing pattern,
wherein a code-rate of the first BCC block is equal to a code-rate of the second BCC block;
generating, by the wireless device, a decoded field by decoding the de-rate-matched field.
12. The method of claim 11 , further comprising:
determining the first puncturing pattern according to a first total number of bits in the rate-matched field that precede the first BCC block.
13. The method of claim 12 , further comprising:
determining the second puncturing pattern according to a second total number of bits in the rate-matched field that precede the second BCC block.
14. The method of claim 13 , wherein the second total number of bits in the rate-matched field that precede the second BCC block is greater than zero.
15. The method of claim 14 ,
wherein the rate-matched bits of the second BCC block has a code-rate of K/M, K and M being positive integers greater than zero, so that K bits of the second BCC block are encoded into M rate-matched bits of the second BCC block, and
wherein the second puncturing pattern depends on a remainder Z, the remainder Z being equal to the second total number of bits in the rate-matched field that precede the second BCC block modulo K.
16. The method of claim 15 , wherein the second puncturing pattern is equal to a basic puncturing pattern for the code-rate K/M left cyclic-shifted by the remainder Z.
17. The method of claim 11 , wherein the rate-matched field is a High Efficiency Signal B (HE-SIG-B) field.
18. The method of claim 17 , wherein the first BCC block is a Common Info field.
19. The method of claim 18 , wherein the second BCC block corresponds to a per-station (per-STA) information field, the per-STA information field including information for one or two stations.
20. The method of claim 11 , further comprising de-rate-matching the first and second BCC blocks as a single codeword.