Communication of user specific control information in a wireless network

• US 9,742,433 B2
• Filed: 11/08/2016
• Issued: 08/22/2017
• Est. Priority Date: 11/09/2015
• Status: Active Grant

• Current Assignee: Atlas Global Technologies LLC (Acacia Research Corporation)
• Original Assignee: Newracom Inc.
• Inventors: Lee, Dae Won, Noh, Yujin, Moon, Sungho, Kwon, Young Hoon
• Primary Examiner(s): CHAUDRY, MUJTABA M
• Application Number:
  US15/346,577
• Publication Number:
  US 20170134043A1
• Time in Patent Office: 287 Days
• Field of Search: None
• CPC Class Codes: H03M 13/1102 Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
• CPC Class Codes: H03M 13/23 using convolutional codes, e.g. unit memory codes
• CPC Class Codes: H03M 13/6362 by puncturing
• CPC Class Codes: H03M 13/6527 IEEE 802.11 [WLAN]
• CPC Class Codes: H03M 7/30 Compression speech analysis-synthesis for redundancy reduction G10L19/00; for image communication H04N; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
• CPC Class Codes: H04L 1/0031 Multiple signaling transmission H04L1/1664, F15 take precedence
• CPC Class Codes: H04L 1/0059 Convolutional codes
• CPC Class Codes: H04L 1/0061 Error detection codes
• CPC Class Codes: H04L 1/0069 Puncturing patterns
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04W 52/00 Power management, e.g. TPC [Transmission Power Control], power saving or power classes gain control in transmitters or power amplifiers H03G3/3042
• CPC Class Codes: H04W 80/02 Data link layer protocols
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

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.

Claims

1. A method performed by a wireless device, the method comprising:

generating, by the wireless device, a rate-matched High Efficiency Signal B (HE-SIG-B) field by Block Convolution Code (BCC) encoding an HE-SIG-B field and rate-matching, according to a puncturing pattern, a BCC block of the encoded HE-SIG-B field;

generating, by the wireless device, a Physical Layer Protocol Data Unit (PPDU) including the rate-matched HE-SIG-B field; and

transmitting, by the wireless device, the PPDU,

wherein a total number N is a total number of bits of the HE-SIG-B field that precede the BCC block,

wherein the total number N is greater than 0, and

wherein the puncturing pattern depends on the total number N.

2. The method of claim 1, wherein the BCC block has a code-rate of K/M, K and M being positive integers greater than zero, so that K bits of the BCC block are encoded into M bits, and

wherein the puncturing pattern depends on a remainder Z, the remainder Z being equal to the total number N modulo K.

3. The method of claim 2, wherein the puncturing pattern is equal to a basic puncturing pattern for the code-rate K/M left cyclic-shifted by the remainder Z.

4. The method of claim 3, wherein BCC encoding the 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.

5. The method of claim 4, wherein the code-rate is 3/4, wherein the first set of encoded bits includes a first plurality of consecutive three-bit sequences beginning at an earliest bit of the first set of encoded bits, wherein the second set of encoded bits includes a second plurality of consecutive three-bit sequences beginning at an earliest bit of the second set of encoded bits, and wherein rate-matching the BCC block includes:

discarding a third bit of each of the first plurality of consecutive three-bit sequences and a second bit of each of the second plurality of consecutive three-bit sequences when the remainder Z is equal to zero;

discarding a second bit of each of the first plurality of consecutive three-bit sequences and a first bit of each of the second plurality of consecutive three-bit sequences when the remainder Z is equal to one; and

discarding a first bit of each of the first plurality of consecutive three-bit sequences and a third bit of each of the second plurality of consecutive three-bit sequences when the remainder Z is equal to two.

6. The method of claim 4, wherein the code-rate is 2/3, wherein the second set of encoded bits includes a plurality of consecutive two-bit sequences beginning at an earliest bit of the second set of encoded bits, and wherein rate-matching the BCC block includes:

discarding a second bit of each of the plurality of consecutive two-bit sequences when the remainder Z is equal to zero; and

discarding a first bit of each of the plurality of consecutive two-bit sequences when the remainder Z is equal to one.

7. The method of claim 4, wherein the code-rate is 5/6, wherein the first set of encoded bits includes a first plurality of consecutive five-bit sequences beginning at an earliest bit of the first set of encoded bits, wherein the second set of encoded bits includes a second plurality of consecutive five-bit sequences beginning at an earliest bit of the second set of encoded bits, and wherein rate-matching the BCC block includes:

discarding third and fifth bits of each of the first plurality of consecutive five-bit sequences and second and fourth bits of each of the second plurality of consecutive five-bit sequences when the remainder Z is equal to zero;

discarding second and fourth bits of each of the first plurality of consecutive five-bit sequences and first and third bits of each of the second plurality of consecutive five-bit sequences when the remainder Z is equal to one;

discarding first and third bits of each of the first plurality of consecutive five-bit sequences and second and fifth bits of each of the second plurality of consecutive five-bit sequences when the remainder Z is equal to two;

discarding second and fifth bits of each of the first plurality of consecutive five-bit sequences and first and fourth bits of each of the second plurality of consecutive five-bit sequences when the remainder Z is equal to three; and

discarding first and fourth bits of each of the first plurality of consecutive five-bit sequences and third and fifth bits of each of the second plurality of consecutive five-bit sequences when the remainder Z is equal to four.

8. The method of claim 1, wherein the HE-SIG-B field includes a plurality of BCC blocks, and further comprising:

BCC encoding the plurality of BCC blocks of the HE-SIG-B field as a single codeword.

9. The method of claim 1, wherein the HE-SIG-B field includes a plurality of BCC blocks, wherein a plurality of total numbers N are respective total numbers of bits of the HE-SIG-B field that respectively precede the respective BCC blocks of the plurality of BCC blocks;

and further comprising;

separately rate-matching the BCC blocks of the plurality of BCC blocks using respective puncturing patterns determined using the respective total numbers N.

10. The method of claim 1, wherein the 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 High Efficiency Signal B (HE-SIG-B) field; and

generating, by the wireless device, a decoded HE-SIG-B field by de-rate-matching and decoding the rate-matched HE-SIG-B field, the rate-matched HE-SIG-B field including a rate-matched Block Convolution Code (BCC) block, wherein generating the decoded HE-SIG-B field includes

de-rate-matching the rate-matched BCC block according to a puncturing pattern depending on a total number N,

wherein the total number N is a total number of bits of the decoded HE-SIG-B field corresponding to bits of the rate-matched HE-SIG-B field that preceded the BCC block, and

wherein the total number N is greater than 0.

12. The method of claim 11, wherein the BCC block has a code-rate of K/M, K and M being positive integers greater than zero, so that K bits of the BCC block are encoded into M bits, and

wherein the puncturing pattern depends on a remainder Z, the remainder Z being equal to the total number N modulo K.

13. The method of claim 12, wherein the puncturing pattern is equal to a basic puncturing pattern for the code-rate K/M left cyclic-shifted by the remainder Z.

14. The method of claim 13, wherein the code-rate is 3/4, and wherein de-rate-matching the encoded BCC block includes:

for each of a plurality of consecutive four-value sequences {x1, x2, x3, x4} in the encoded BCC block;

generating a first three-value sequence {x1, x3, D} and a second three-value sequence {x2, D, x4} when the remainder Z is equal to zero;

generating the first three-value sequence {x1, D, x3} and the second three-value sequence {D, x2, x4} when the remainder Z is equal to one; and

generating the first three-value sequence {D, x2, x4} and the second three-value sequence {x1, x3, D} when the remainder Z is equal to two,

wherein the plurality of consecutive four-value sequences begins at an earliest value of the encoded BCC block, and

wherein D is a predetermined dummy value.

15. The method of claim 13, wherein the code-rate is 2/3, and wherein de-rate-matching the encoded BCC block includes:

for each of a plurality of consecutive three-value sequence {x1, x2, x3} in the encoded BCC block;

generating a first two-value sequence {x1, x3} and a second two-value sequence {x2, D} when the remainder Z is equal to zero; and

generating the first two-value sequence {x1, x2} and the second two-value sequence {D, x3} when the remainder Z is equal to one,

wherein the plurality of consecutive three-value sequences begins at an earliest value of the encoded BCC block, and

wherein D is a predetermined dummy value.

16. The method of claim 13, wherein the code-rate is 5/6, and wherein de-rate-matching the encoded BCC block includes:

for each of a plurality of consecutive six-value sequence {x1, x2, x3, x4, x5, x6} in the encoded BCC block;

generating a first five-value sequence {x1, x3, D, x6, D} and a second five-value sequence {x2, D, x4, D, x6} when the remainder Z is equal to zero;

generating the first five-value sequence {x1, D, x3, D, x5} and the second five-value sequence {D, x2, D, x4, x6} when the remainder Z is equal to one;

generating the first five-value sequence {D, x2, D, x4, x6} and the second five-value sequence {x1, D, x3, x5, D} when the remainder Z is equal to two;

generating the first five-value sequence {x1, D, x3, x5, D} and the second five-value sequence {D, x2, x4, D, x6) when the remainder Z is equal to three; and

generating the first five-value sequence {D, x2, x4, D, x6} and the second five-value sequence {x1, x3, D, x5, D) when the remainder Z is equal to four,

wherein the plurality of consecutive six-value sequences begins at an earliest value of the encoded BCC block, and

wherein D is a predetermined dummy value.

17. The method of claim 11, wherein the HE-SIG-B field includes a plurality of BCC blocks, wherein the encoded HE-SIG-B field includes a plurality of portions respectively corresponding to the plurality of BCC blocks, and further comprising:

de-rate-matching the plurality of portions as a single codeword.

18. The method of claim 11, wherein the HE-SIG-B field includes a plurality of BCC blocks, wherein the encoded HE-SIG-B field includes a plurality of portions respectively corresponding to the plurality of BCC blocks, wherein a plurality of total numbers N are respective total numbers of bits of the HE-SIG-B field that respectively precede the respective BCC blocks of the plurality of BCC blocks, and further comprising:

separately de-rate-matching the portions of the encoded HE-SIG-B field according to respective puncturing patterns determined according to the respective total numbers N.

19. The method of claim 11, wherein the BCC block corresponds to a per-station (per-STA) information field, the per-STA information field including information for one or two stations.