A Study of Downlink Bandwidth Estimation in LTE Networks

• Main Authors: CHEN, HSING-YU, 陳星宇
• Other Authors: WU, JIEH-CHIAN
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/nvjd6w

碩士 === 國立高雄第一科技大學 === 電腦與通訊工程系碩士班 === 106 === The rapid growth of mobile communications technology and the popularity of smart phones provides convenience to people. Smart phones are no longer limited to voice services, but network data services. Consequently, available bandwidth for mobile networks becomes one of the important indicators for mobile operators Currently most of estimation technologies of the available bandwidth in mobile networks rely on the active measurement, which actively sends data to get estimate and results in the consumption of available bandwidth. In contrast to active measurement, passive measurement only passively receives data to make estimation of available bandwidth and the corresponding literatures are limited. In this thesis, existing active and passive measurement technologies are used to estimate the available bandwidth and their performances are evaluated. In addition, two technologies based on passive measurement are proposed, which are passive Bulk Transfer Capacity and passive Packet Train Dispersion, respectively. Experimental results show that the use of proposed passive measurement can effectively measure available bandwidth.