Indian Journal of Science and Technology

Abstract

Background/Objectives: As a result of the proliferation of Access Point (AP) in various environments, it has demonstrated a significant increase in the interference levels betweenadjacent AP Due to sharing of the ISM bands, significantly affecting network performance.The aim of this paper is to propose an optimization model for allocating channels in the 2.4GHz band, supported in the use allocation models. Methods/Statistical Analysis: A scenario consisting of 6 storey building and 24 Access Point (AP) distributed inside was proposed. The optimization model for allocating frequencies in the 2.4 GHz band is represented as a linear programming problem based on an allocation model, which is a variant of transport models. The model seeks to minimize interference between AP and thereby increase SINR levels and spectral efficiency. To determine whether the proposed model (MF) makes a better allocation of channels than the current model (MA), which incorporates policies RRM, a hypothesis test is performed under mean difference for two independent samples, by t tests -student. Topic Relevance: Although there have been several related channel assignment work, no evidence of any optimization model that has considered using allocation models as a strategy for optimizing spectral efficiency was found. In addition, the model offers levels and reduced computational time complexity. Findings: based on the results it was evident that the model proposed optimization (MF) made a better allocation of resources in the frequency domain compared to the current model (MA), reaching an increase of about 15% in SINR average, with 95% confidence. Application / Improvements: The MF model can be considered as a tool in future research related to the design and analysis of wireless networks which use the 2.4GHz band, to assess aspects of performance, efficiency and QoS.

Keywords: Channel Assignment, Efficiency, Optimization, Performance, SINR, WLAN