METHOD FOR TRANSMITTING PPDU IN WIRELESS LOCAL AREA NETWORK AND APPARATUS FOR THE SAME

• US 20160165483A1
• Filed: 02/12/2016
• Published: 06/09/2016
• Est. Priority Date: 04/08/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Noh, Yu Jin, Lee, Dae Won, Seok, Yong Ho
• Granted Patent: US 9,913,168 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 27/2603 Signal structure ensuring backward compatibility with legacy system
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04L 5/0085 when channel conditions change
• CPC Class Codes: H04W 28/065 using assembly or disassembly of packets
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A method and device for receiving a data block in a wireless communication system, the method performed by a receiver. The method includes: receiving a physical layer protocol data unit (PPDU) from a transmitter over an operating channel, the PPDU including a signal field, a Very High Throughput-Signal-A (VHT-SIG-A) field, a Very High Throughput-Signal-B (VHT-SIG-B) field and a padded data block, generating a first data block by removing zero or more physical padding bits from the padded data block in a physical layer; and generating a second data block by removing zero or more Medium Access Control (MAC) padding bits from the first data block in a MAC layer.

Claims

1. A method for transmitting data blocks in a wireless communication system, the method performed by a transmitter and comprising:

generating a data block in a Medium Access Control (MAC) layer;

generating a first padded data block by appending zero or more MAC padding bits to the data block;

delivering the first padded data block from the MAC layer to a physical (PHY) layer;

generating a second padded data block by appending zero or more PHY padding bits to the first padded data block in the PHY layer; and

transmitting a PHY protocol data unit (PPDU) to a receiver over an operating channel, the PPDU including a first signal field, a second signal field and the second padded data block,

wherein the first signal field includes information required to interpret the PPDU,

wherein the second signal field includes information indicating a modulation and coding scheme for the data block, and

wherein a size for the second signal field increases as a bandwidth of the operating channel increases.

2. The method of claim 1, wherein the first signal field further includes a bandwidth field indicating the bandwidth of the operating channel.

3. The method of claim 1, wherein the first signal field further includes information indicating a number of spatial streams.

4. A device comprising:

a processor; and

a transceiver operatively coupled to the processor and configured to transmit and receiving a data block,

wherein the processor having a Medium Access Control (MAC) layer and a physical (PHY) layer is configured to;

generate a data block in a Medium Access Control (MAC) layer;

generate a first padded data block by appending zero or more MAC padding bits to the data block;

deliver the first padded data block from the MAC layer to a physical (PHY) layer;

generate a second padded data block by appending zero or more PHY padding bits to the first padded data block in the PHY layer; and

instruct the transceiver to transmit a PHY protocol data unit (PPDU) to a receiver over an operating channel, the PPDU including a first signal field, a second signal field and the second padded data block,

wherein the first signal field includes information required to interpret the PPDU,

wherein the second signal field includes information indicating a modulation and coding scheme for the data block, and

wherein a size for the second signal field increases as a bandwidth of the operating channel increases.

5. The device of claim 4, wherein the first signal field further includes a bandwidth field indicating the bandwidth of the operating channel.

6. The device of claim 4, wherein the first signal field further includes information indicating a number of spatial streams.