Communication of user specific control information in a wireless network

• US 10,270,463 B2
• Filed: 07/12/2017
• Issued: 04/23/2019
• 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:
  US15/648,333
• Publication Number:
  US 20170310339A1
• Time in Patent Office: 650 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 wireless device for transmitting a frame, comprising:

one or more memories; and

one or more processors coupled to the one or more memories, the one or more processors configured to cause;

Block Convolution Code (BCC) encoding of bits of a BCC block to generate rate-matched bits of the BCC block according to a puncturing pattern;

generating a frame including a High Efficiency Signal B (HE-SIG-B) field, the HE SIG B field including the rate-matched bits of the BCC block; and

transmitting the frame,

wherein the puncturing pattern depends on a total number N of bits of the HE-SIG-B field that precede the BCC block, the total number N being greater than 0.

2. The wireless device of claim 1, wherein the rate-matched bits of 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 rate-matched bits of the BCC block, and

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

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

4. The wireless device of claim 3, wherein BCC encoding the bits of 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 wireless device 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 BCC encoding the bits of 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 wireless device 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 BCC encoding the bits of 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 wireless device of claim 1, wherein the HE-SIG-B field includes a plurality of BCC blocks, and further comprising:

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

8. The wireless device 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 BCC-encoding of bits of the respective BCC blocks using respective puncturing patterns determined using the respective total numbers N.

9. The wireless device 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.

10. A wireless device for receiving a frame, comprising:

one or more memories; and

one or more processors coupled to the one or more memories, the one or more processors configured to cause;

receiving a frame including a High Efficiency Signal B (HE-SIG-B) field, the HE SIG B field including rate-matched bits of a Block Convolution Code (BCC) block; and

BCC decoding the rate-matched bits of the BCC block according to a puncturing pattern,

wherein the puncturing pattern depends on a total number N of bits of the HE-SIG-B field that precede the BCC block, the total number N being greater than 0.

11. The wireless device of claim 10, wherein the rate-matched BCC block has a code-rate of KIM, K and M being positive integers greater than zero, so that K bits of the BCC block are encoded into M rate-matched bits of the BCC block, and

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

12. The wireless device of claim 11, wherein the puncturing pattern corresponds to a basic puncturing pattern for the code-rate K/M left cyclic-shifted by the remainder Z.

13. The wireless device of claim 12, wherein the code-rate is 3/4, and wherein BCC decoding the rate-matched bits of the BCC block includes:

for each of a plurality of consecutive four-value sequences {x1, x2, x3, x4} in the rate-matched bits of the 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 rate-matched bits of the BCC block, and

wherein D is a predetermined dummy value.

14. The wireless device of claim 12, wherein the code-rate is 2/3, and wherein BCC decoding the rate-matched bits of the BCC block includes:

for each of a plurality of consecutive three-value sequence {x1, x2, x3} in the rate-matched bits of the 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 rate-matched bits of the BCC block, and

wherein D is a predetermined dummy value.

15. The wireless device of claim 10, wherein the HE-SIG-B field includes a plurality of BCC blocks, and further comprising:

BCC decoding whole rate-matched bits of the plurality of BCC blocks as a single codeword.

16. The wireless device of claim 10, 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 BCC-decoding rate-matched bits of the respective BCC blocks of the HE-SIG-B field according to respective puncturing patterns determined according to the respective total numbers N.

17. The wireless device of claim 10, 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.