*Author for correspondence Indian Journal of Science and Technology, Vol 11(22), DOI: 10.17485/ijst/2018/v11i22/122475, June 2018 ISSN (Print) : 0974-6846 ISSN (Online) : 0974-5645 Optimization of the Spectral Efciency in WLAN Networks in the 2.4GHz Band Under the Use of Allocation Models F. Juan Carlos Vesga * , H. Martha Fabiola Contreras and W. Harold Esneider Perez Escuela de Ciencias Básicas Tecnología e Ingeniería (ECBTI), Universidad Nacional Abierta y a Distancia; Carrera 27 Nro. 40-43. Bucaramanga, Colombia; juan.vesga@unad.edu.co, martha.contreras@unad.edu.co, harold.perez@unad.edu.co Keywords: Channel Assignment, Efciency, Optimization, Performance, SINR, WLAN 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. 1. Introduction Currently, wireless networks play an important role in the feld of connectivity, due to the benefts associated with mobility, availability, speed and low cost of implemen- tation 1 . Within the range of wireless networks, they are called WLAN (Wireless Local Area Network) supported in the 802.11 standard, which have been used in every- day places such as homes, ofces, educational institutions, among others. Such networks are formed mainly by the use of concentrators devices called Access Point (AP), which allow users to connect wirelessly to a distance less than 100m, why the proliferation of AP is each Tey are increasing due to the need for greater coverage connec- tion. To the extent that density increases AP in WLAN net- works, they have found problems with the performance thereof, which may be the result of lack of policies for user management on trafc load AP, inadequate selec- tion frequency between channels, electromagnetic inter-