Interference mitigation mechanism for D2D communication in ultra-dense small cell network

• Main Authors: Yu, Chun-Hung, 余俊宏
• Other Authors: Huang, Ching-Yao
• Format: Others
• Language: en_US
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/62747763734324756750

碩士 === 國立交通大學 === 電子工程學系 電子研究所 === 103 === After small cell concepts are widely accepted by telecomm operator, research about high-ly dense small cell appears in recent of years. At the same time, device-to-device (D2D) become a popular topic and discussed by 3GPP. Direct communication is an intuitive concept, decrease the usage of backbone network and shorten the distance of transmis-sion in order to enhance SINR ratio and throughput. However, many issue happened while highly dense small cell coexist with D2D. In this thesis, we will focus on interfer-ence to D2D which cause by densely small cell, analysis different scenarios and handle it. Consider the extreme case of downlink power control, different scenarios decided whether small cell should turn off or not. Turn off some small cell can mitigate interfer-ence for D2D devices but user served by those small cells who turn off will be effect and become victim. Since our environment deploy high dense small cell those user who be-come victim can still serve by neighbor small cell. Also we include coordinated mul-ti-point (CoMP) for these victim. Combination of two schemes can enhance performance in highly dense small cell coexist D2D environment.