POWER CONTROL METHOD FOR GUARANTEEING QUALITY OF SERVICE OF DEVICE TO DEVICE DIRECT COMMUNICATION AND APPARATUS THEREFOR

• Main Authors: RYU JONGYEOL, CHOI WAN, KIM BYOUNGHOON, SONG HOJIN, SEO HANBYUL, KIM DONGIN
• Format: Patent
• Language: English
• Published: 19.05.2016
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; WIRELESS COMMUNICATIONS NETWORKS

Disclosed is a method of controlling, by a device, power for guaranteeing the quality of service of a device to device (D2D) direct communication. In detail, the method comprises the steps of: receiving, from a base station, information containing at least one of channel information and information of a receiving side device in a D2D communication; estimating an uplink channel with the base station on the basis of the received information; and selecting a transmission power by comparing the channel gain value of the uplink channel with a threshold value for determining the maximum transmission power, and transmitting data to the base station using the selected transmission power, wherein the channel information comprises at least one of channel information of the D2D communication, uplink channel information between the device and the base station, and interference channel information between the device and the receiving side device in the D2D communication.