# US 2021/0243650 A1 · Wireless communication device and wireless communication method

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- Number: US 2021/0243650 A1
- Document ID: US20210243650A1
- Status: Published application
- Kind: A1
- Application number: 17/239,348
- Filed: 2021-04-23
- Published: 2021-08-05
- Earliest claimed: 2015-02-13
- Assignees: Panasonic Intellectual Property Management Co., Ltd.
- Applicants: Panasonic Intellectual Property Management Co., Ltd.
- Inventors: Lei Huang; Michael Hong Cheng Sim; Takenori Sakamoto; Naganori Shirakata
- Web page: https://patentgrep.com/patent/US20210243650A1

## CPC

- H03M 13/6527: {IEEE 802.11 [WLAN]}
- H03M 13/1148: {Structural properties of the code parity-check or generator matrix}
- H04L 1/001: {applied to control information}
- H04L 1/005: {Iterative decoding, including iteration between signal detection and decoding operation}
- H04L 1/0057: {Block codes (H04L1/0061, H04L1/0064 take precedence)}
- H04L 1/0058: {Block-coded modulation}
- H04L 1/0081: {Formats specially adapted to avoid errors in the feedback channel (H04L1/1607 takes precedence)}
- H04L 1/0631: {Receiver arrangements}
- H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information}
- H04L 27/2602: {Signal structure}
- H04L 27/2603: {Signal structure ensuring backward compatibility with legacy system}
- H04L 69/161: {Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields}
- H04L 69/323: in the physical layer [OSI layer 1]
- H04W 28/065: {using assembly or disassembly of packets}
- H04W 84/12: WLAN [Wireless Local Area Networks]
- H03M 13/1102: {Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes}
- H04L 27/2613: {Structure of the reference signals}
- H03M: CODING; DECODING; CODE CONVERSION IN GENERAL (using fluidic means F15C4/00; optical analogue/digital converters G02F7/00; coding, decoding or code conversion, specially adapted for particular applications, see the relevant subclasses, e.g. G01D, G01R, G06F, G06T, G09G, G10L, G11B, G11C, H04B, H04L, H04M, H04N; ciphering or deciphering for cryptography or other purposes involving the need for secrecy G09C)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A wireless communication device serving as an NG60 WiGig device includes a PPDU generator that generates an MF control PHY PPDU (physical layer protocol data unit) including a legacy preamble, a legacy header, an NG60 header (a non-legacy header), a data field, and identification information indicating that the non-legacy header is included in the PPDU and a transmitter that transmits the generated MF control PHY PPDU.

## Claims

### Claim 1

A wireless communication device, comprising:
reception circuitry, which in operation, receives, from a transmission apparatus, a physical layer protocol data unit (PPDU) including a legacy header, a non-legacy header and a data field, the non-legacy header including a bandwidth field indicating a channel bandwidth, wherein the legacy header and the non-legacy header are encoded by the transmission apparatus into a first codeword of the PPDU; and
decode circuitry, which in operation, performs error correction decoding on the first codeword of the received PPDU to detect the legacy header and the non-legacy header.

### Claim 2 (depends on 1)

The wireless communication device according to claim 1, wherein the non-legacy header includes identification information field indicating that the non-legacy header is included in the PPDU, and the identification information field is format identification information field included in a top portion of the non-legacy header.

### Claim 3 (depends on 1)

The wireless communication device according to claim 1, wherein the non-legacy header is disposed immediately after the legacy header in the PPDU.

### Claim 4 (depends on 2)

The wireless communication device according to claim 2, wherein the format identification information field and the bandwidth field are individually described in the non-legacy header.

### Claim 5 (depends on 2)

The wireless communication device according to claim 2, wherein the format identification information field and the bandwidth field are jointly described in a single field in the non-legacy header.

### Claim 6 (depends on 5)

The wireless communication device according to claim 5, wherein each of the format identification information filed and the bandwidth field are described in the non-legacy header by using a sequence, and the sequence is selected from among a plurality of sequences defined in accordance with the channel bandwidth.

### Claim 7 (depends on 1)

The wireless communication device according to claim 1, comprising:
demodulation circuitry, which in operation, demodulates the received PPDU, wherein the decoding circuitry performs the error correction decoding on the first codeword of the demodulated PPDU.

### Claim 8 (depends on 2)

The wireless communication device according to claim 2, comprising:
descramble circuitry, which, in operation, performs descrambling on the PPDU, after the error correction decoding is performed by the decode circuitry, wherein the descrambling is not performed on the identification information field.

### Claim 9 (depends on 1)

The wireless communication device according to claim 1, comprising:
demodulation circuitry, which, in operation, demodulates the received PPDU, wherein the demodulation circuitry demodulates the non-legacy header by using a first phase that differs from a second phase used to demodulate one of a legacy preamble or the legacy header.

### Claim 10

A wireless communication method, comprising:
receiving, from a transmission apparatus, a physical layer protocol data unit (PPDU) including a legacy header, a non-legacy header and a data field, the non-legacy header including a bandwidth field indicating a channel bandwidth, wherein the legacy header and the non-legacy header are encoded by the transmission apparatus into a first codeword of the PPDU; and
performing error correction decoding on the first codeword of the received PPDU to detect the legacy header and the non-legacy header.

### Claim 11 (depends on 10)

The wireless communication method according to claim 10, wherein the non-legacy header includes identification information field indicating that the non-legacy header is included in the PPDU, and the identification information field is format identification information field included in a top portion of the non-legacy header.

### Claim 12 (depends on 10)

The wireless communication method according to claim 10, wherein the non-legacy header is disposed immediately after the legacy header in the PPDU.

### Claim 13 (depends on 11)

The wireless communication method according to claim 11, wherein the format identification information field and the bandwidth field are individually described in the non-legacy header.

### Claim 14 (depends on 11)

The wireless communication method according to claim 11, wherein the format identification information field and the bandwidth field are jointly described in a single field in the non-legacy header.

### Claim 15 (depends on 14)

The wireless communication method according to claim 14, wherein each of the format identification information filed and the bandwidth field are described in the non-legacy header by using a sequence, and the sequence is selected from among a plurality of sequences defined in accordance with the channel bandwidth.

### Claim 16 (depends on 10)

The wireless communication method according to claim 10, comprising:
demodulating the received PPDU, wherein the decoding includes performing the error correction decoding on the first codeword of the demodulated PPDU.

### Claim 17 (depends on 11)

The wireless communication method according to claim 11, comprising:
performing descrambling on the PPDU, after the error correction decoding is performed, wherein the descrambling is not performed on the identification information field.

### Claim 18 (depends on 11)

The wireless communication method according to claim 11, comprising:
demodulating the received PPDU, wherein the demodulating includes demodulating the non-legacy header by using a first phase that differs from a second phase used to demodulate one of a legacy preamble or the legacy header.