Apparatus and method for transmitting/receiving data in communication system

摘要

A data transmission apparatus in a communication system includes a verification unit configured to verify a new frequency band for transmitting and receiving data to and from a plurality of terminals; a generation unit configured to generate a frame in the new frequency band; and a transmission unit configured to transmit data through the new frequency band by using the frame, wherein the frame includes data fields in which data corresponding to the terminals are included, and control fields in which control information for receiving the data included in the data field in the terminals is included, and wherein the control fields include a VHT-STF (very high throughput short training field), a VHT-SIG (very high throughput signal field) A1, a VHT-SIG A2, a plurality of VHT-LTFs (very high throughput long training fields), and a VHT-SIG B.

主权项

1. A data transmission apparatus in a communication system, comprising:
a verification unit configured to verify a frequency band for transmitting and receiving data packets to and from a plurality of terminals; a generation unit configured to generate a frame for transmission in the frequency band; and a transmission unit configured to transmit data through the frequency band by using the frame, wherein the frame includes data fields in which data corresponding to the terminals are included, and control fields in which control information for receiving the data included in the data field in the terminals is included, wherein the control fields include a VHT-STF (very high throughput short training field), a VHT-SIG (very high throughput signal field) A1, a VHT-SIG A2, a plurality of VHT-LTFs (very high throughput long training fields), and a VHT-SIG B, wherein the VHT-SIG A1 and the VHT-SIG A2 include information for bandwidth modes corresponding to the frequency band, wherein the bandwidth modes include a W/2 Hz bandwidth mode, a W Hz bandwidth mode, 2 W Hz bandwidth mode, a 4 W Hz bandwidth mode, a 8 W Hz bandwidth mode, and a 16 W Hz bandwidth mode, wherein the W is defined as a bandwidth in the frequency band, wherein symbol numbers and bit allocation schemes of the VHT-SIG A1 and the VHT-SIG A2 are made different according to bandwidths in each of the bandwidth modes, wherein the bandwidth modes are respectively verified by detecting the symbol numbers in the VHT-SIG A1 and the VHT-SIG A2, and wherein lengths of the VHT-SIG A1 and the VHT-SIG A2 are made different from packet to packet in the bandwidth modes.