Method and apparatus for transmitting data in very high throughput wireless local area network system

摘要

A method of transmitting data in a wireless local area network is provided. The method includes the steps of: generating a data unit including a MAC (Medium Access Control) header and MSDU (MAC Service Data Unit), generating an encoded data unit by encoding the data unit, generating one or more spatial blocks by dividing the encoded data unit, dividing each of the one or more spatial block into a first block and a second block, generating a first interleaved block and a second interleaved block by interleaving the first block and the second block respectively, generating a first mapped sequence by mapping the first interleaved block into signal constellation, generating a second mapped sequence by mapping the second interleaved block into signal constellation, generating the transmission signal by performing IDFT (Inverse Discrete Fourier Transform) to the first mapped sequence and the second mapped sequence; and transmitting the transmission signal.

主权项

1. A method of transmitting data in a wireless local area network, the method comprising:
generating, by a transmitter, an encoded data unit by encoding transmission data; generating, by the transmitter, one or more spatial blocks by re-arranging the encoded data unit; dividing, by the transmitter, each spatial block of the one or more spatial blocks into two frequency segments, wherein a bandwidth of each frequency segment is half of a bandwidth of the each spatial block; interleaving, by the transmitter, the two frequency segments to generate a first interleaved segment and a second interleaved segment, respectively; generating, by the transmitter, first and second mapped sequences by respectively mapping the first and second interleaved segments into a signal constellation; performing, by the transmitter, an Inverse Discrete Fourier Transform (IDFT) on the first and second mapped sequences to generate a transmission signal; and transmitting, by the transmitter, the transmission signal via a data field included in a physical layer protocol data unit (PPDU) to at least one receiving station, wherein the PPDU includes a first control field and a second control field, the first control field includes a group ID for the at least one receiving station and information on at least one spatial stream allocated for the at least one receiving station, and wherein when the PPDU is transmitted to a plurality of receiving stations, control information included in the first control field is common for the plurality of receiving stations and the second control field includes control information fields, each of which is used for a respective one of the receiving stations.