Patent ID: 9143300
Filing Date: 2015-09-22
Classification: H04B,H04L,H04W

Abstract:
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) A wherein the VHT-SIG A 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 A wherein the bandwidth modes are respectively verified by detecting the symbol numbers in the VHT-SIG A wherein lengths of the VHT-SIG A