Abstract
This paper arose from the need to improve mobility and connectivity to network users of the Universidad Nacional Tecnológica de Lima Sur and the problems that arise on the quality of services (QoS) such as signal intermittence, high latency, low decibels of received power, low coverage equipment that doesn't support high data transit and exceed the limit of connected users. An analysis is presented for optimization of the IEEE 802.11 wireless QoS in indoor media, the coverage data collected from the different equipment based on reception power measurements made with the Wi-Fi Network Analyzer software, mapping of the ideal approach to new coverage areas and the location of Access Points in areas with high student, administrative and teaching staff of the university through simulations of the coverage of the equipment made with NETSPOT software. The results obtained show that the actual design of the wireless network presents interference by equipment configured in the same transmission channel and adjacent, as well as insufficient coverage of radiated power for indoor environments due to the poor location and choice of models of access points, and to be replaced with Access point with high density characteristics of users connected simultaneously by equipment, suitable for indoor environments with technologies such as MU-MIMO and ARM; the results are shown favorable and optimized.
Highlights
Wireless networks are growing rapidly and rapidly due to its great advantage of installation, flexibility and scalability, being the most used 802.11 standard known worldwide by its trade name as Wi-Fi so-called by Interbrand who was hired by the founding members of the Wireless Ethernet Compatibility Alliance [1], known as Wi-Fi Alliance, the organization that promotes Wi-Fi technology and created a standard of connection with multiple devices that certified the interoperability of equipment under the protocol IEEE 802.11 [2].The use of this type of network is directly linked to the number of Internet users whose rate of growth influences proportionally
Equipment should be replaced by indoor models and two access points placed in the center of each floor of the pavilions, as shown in “Fig. 6” to achieve adequate signal coverage
The distribution for the new optimized design was done with 2 Alcatel-Lucent OmniAccess Stellar AP1101, for its ability to control the bandwidth assigned to each terminal dualfrequency transmission 2.4GHz and 5GHz and 2x2 MIMO technology, showing favorable results in “Fig. 7”, reaching a signal quality higher than -70dBm in almost all indoor environments
Summary
Wireless networks are growing rapidly and rapidly due to its great advantage of installation, flexibility and scalability, being the most used 802.11 standard known worldwide by its trade name as Wi-Fi so-called by Interbrand who was hired by the founding members of the Wireless Ethernet Compatibility Alliance [1], known as Wi-Fi Alliance, the organization that promotes Wi-Fi technology and created a standard of connection with multiple devices that certified the interoperability of equipment under the protocol IEEE 802.11 [2] The use of this type of network is directly linked to the number of Internet users whose rate of growth influences proportionally. According to studies carried out in environments with an adequate indoor design (buildings), the best results considering the normalized throughput as an efficiency measure are obtained with a network based on the IEEE 802.11n standard with 78%, while with IEEE 802.11b an efficiency of 17% [5] is obtained, being a very low percentage of signal use even in the best of scenarios (78%)
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