Development and analysis of bandwidth allocation linear model in LTE downlink with Resource Allocation Type 1

Анотація

The LTE (Long-Term Evolution) technology is a leader in telecommunications market and seen as an effective solution in construction of telecommunication networks of the Fourth Generation (4G). To ensure high performance and noise immunity in the LTE OFDMA (Orthogonal Frequency-Division Multiple Access) applied as a method of providing information transmission to multiple users of the radio spectrum based on an orthogonal frequency division multiplexing. The effectiveness of time-frequency resources allocation between user equipment that are represented in the LTE as resource blocks is largely determined by the mathematical models and computational techniques. In this regard, in the article proposed the mathematical model of bandwidth allocation of the downlink in the LTE network, organized as the first type of allocation (RAT 1, Resource Allocation Type 1). Using the proposed model allowed to reduce the solutions of the technological problem of bandwidth allocation downlink in the LTE network to solving the optimization problem of Boolean programming. The linear nature of the model will significantly reduce the computational complexity of obtaining the final solutions on the resource blocks allocation between the user equipment in LTE network. The research results of the proposed model confirmed its adequacy and accuracy on a number of numerical examples.

Keywords: network, channel, resource block, bandwidth, quality of service, optimization, LTE