Интернет-журнал «НАУКОВЕДЕНИЕ» Improving quality of service in Worldwide Interoperability for Microwave Access networks using Relay nodes

Abstract. In WiMAX networks, two main forms of propagation models are used. These are the non-line of sight propagation (2GHz to 11GHz) and line of sight propagation (2GHz to 11GHz). It is expected that WiMAX operators will need to increase the density of base stations in order to properly address the challenges posed by the mobile non-line of sight propagation channels. Therefore in order to enable rapid and cost effective deployment of WiMAX networks, relay technology, which requires no back-haul line, is considered a key feature for successful business. This study evaluates the power deployed by the direct link for communication, that is, a user equipment communicating via the home base station and the use of a foreign base station as a relay point to communicate with the home base station. The varying parameter for this study is the distance between the user equipment and the base stations. An algorithm was used to choose the best possible route for communication with respect to the user's distance to the base stations. In the findings, the relay method proposed, yielded a difference of 21.5175dB from the direct link. This is a 10% decrease in power with respect to the direct link