Method for transmitting PPDU in wireless local area network and apparatus for the same

摘要

A method of transmitting a data block in a wireless communication system is provided. The method includes generating a data block used for multi-user transmission, the data block comprising a first control field and a data field for a plurality of users, the first control field indicating multi-user transmission of the data block, the data field comprising a plurality of data units, each data unit comprising a PSDU(PLCP(Physical Layer Convergence Procedure) Service Data Unit) for each user and padding bits which are appended to the PSDU for each user; and transmitting the data block to the plurality of users; wherein the number of the padding bits in each data unit is determined so that lengths of the plurality of data units are same and the number of the padding bits in each data unit is determined by Nsym, NDBPS,k, NPSDU,k, where Nsym denotes the number of OFDM symbols of the data field, NDBPS,k denotes the number of data bits per OFDM symbol for k-th user, and the NPSDU,k denotes the length of the PSDU for k-th user.

主权项

1. A method of 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 at least one padding octet to the data block when a length of the data block is smaller than a target length in the MAC layer; delivering the first padded data block from the MAC layer to a physical (PHY) layer; determining a number of bits for a padding bit sequence of the first padded data block in the PHY layer, the number of bits for the padding bit sequence being smaller than one octet; generating a second padded data block by appending the padding bit sequence to the first padded data block in the PHY layer; and transmitting, over an operating channel, a physical layer convergence procedure (PLCP) protocol data unit (PPDU) to a receiver, 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 the second padded data block; wherein the signal field includes information used for calculating the target length, wherein the VHT-SIG-A field includes group information indicating the receiver to receive the PPDU, wherein the VHT-SIG-B field includes information indicating the length of the data block before padding, and wherein the number of bits for the VHT-SIG-B field is determined based on a bandwidth of the operating channel.