Intelligent Indoor Coverage Planning For TD-LET

In recent years, with the rapid rise of the mobile Internet, data traffic is developing in an unexpectedly fast speed. Traditional GSM and TD-SCDMA communication systems can not meet the growing demand of the need of data volume with the present network capacity, coverage area and data transmission rate. The construction of the forth generation mobile communication network TD-LTE is in great need of speeding up operation. According to related statistics, data services in the majority of cases occur in the interior region. With high demand for business of indoor scene, we need to through the construction of indoor distributed system is required to complete the network coverage, so the operators and research institutions try to emphasize the research of TD-LTE indoor distributed system For mobile operators, the lowest cost to achieve maximum coverage of the indoor area is the best strategy in constructing the network. Based on this idea, So this paper works on the design of indoor distributed system of TD-LTE network, through establishing mathematical model and designing algorithms, under the constraint conditions select intelligently, to get the device of indoor distributed system in achieving the maximum network coverage and the minimum cost.Firstly, the TD-LTE network characteristics, the key technologies, the basic principles of OFDM, MIMO and Multiple Address Access will be analyzed, and the theoretical basis for the research of TD-LTE indoor distributed system will be presented.Next, starting from the network elements of TD-LTE indoor distributed system components, propagation model, structure, construction model, the paper will analyze different scenarios of the ventricular system construction model, to establish a new path of the mainstream mode of using a Multiplexer output to the same frequency range providing the reference for the mathematical modeling.Based on the completion of the above work combined with the characteristics of TD-LTE network, this paper established a multi-objective mathematical model with maximum coverage at minimum cost to solve the problem of balancing the double link power MIMO. In order to make the model and reality as consistent as possible, the model takes the following elements into account:distributed base station network, the loss of device etc.. In the algorithm design, combined with the characteristics of the model, it uses Multi-objective objective algorithms MOEA/D-M2M algorithm to solve these complex problems.Finally, using Matlab as the simulation platform of the algorithm, simulated experiment will be carried on in Guangzhou Higher Education Mega Center’s building A and building B. The experimental results proved that:1.The proposed model is more consistent with the characteristics of TD-LTE network; the design of the algorithm can quickly obtain multiple effective answers, which is suitable for indoor distributed system device to solve this kind of complex combinatorial optimization problem.2.The research is consistent with the low cost and wide coverage of the network strategy, which provides the reference for the TD-LTE indoor network construction, and has a certain theoretical analysis and value of engineering practice.