Research And Application Of Frequency Planning Schemes In TD-LTE Wireless Network

Along with the development of mobile communication and Internet networks, mobile users demand lager coverage and higher speed for communications. Considering this, LTE (Long Term Evolution) is becoming the essential technology in commercial 3G system and starting to be deployed around the world based on the completed work of standardization. In china, the TD-LTE experimental networks have been built in six cities of Shanghai, Nanjing, Hangzhou, Guangzhou, Shenzhen and Xiamen since early 2011. Meanwhile, according to the spectrum resource scarcity, more and more attention has been put on TD-LTE technology and TDD frequency.Because of the current situation that the occupied spectrum wouldn’t be released in short term, how to distribute the spectrum in TD-LTE networks becomes a huge challenge. So the most important problem to solve for network construction is how to increase the spectrum usage through some effective resource allocation design. According to this, the thesis studies the spectrum allocation methods in TD-LTE system and analyzes a new method using FSFR Frequency Shifted Frequency Reuse technology. Supported by the sufficient experiment data from TD-LTE system simulation flat, we compare the network capability of cofrequency Network, Differ-frequency Network and FSFR network in 2 cities, combining with ICIC, power control and schedule control. Through the analysis of the stability and efficiency of FSFR network, the balance between reducing the cofrequency interference and enhancing the spectrum efficiency is well obtained.