WLAN Cell Handoff Latency Abatement Using an FPGA Fuzzy Logic Algorithm Implementation
| Autor: | Ernesto E. Quiroz, Oscar Montiel-Ross, Roberto Sepúlveda, Jorge Quiñones-Rivera |
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| Rok vydání: | 2012 |
| Předmět: |
lcsh:Computer software
Control and Optimization Article Subject Computer science business.industry Quality of service Real-time computing Data loss WiMAX Fuzzy logic Computational Mathematics lcsh:QA76.75-76.765 Handover Control and Systems Engineering Mobile station Wireless lcsh:Electrical engineering. Electronics. Nuclear engineering Field-programmable gate array business lcsh:TK1-9971 Computer network |
| Zdroj: | Advances in Fuzzy Systems, Vol 2012 (2012) |
| ISSN: | 1687-711X 1687-7101 |
| Popis: | Following the path toward 4 G set by its wireless siblings LTE and WiMax, IEEE 802.11 technology, universally known as WiFi, is evolving to become a high data rate QoS-enabled mobile platform. The IEEE 802.11n standard yields data rates up to 450 Mbp s and the 802.11e standard ensures proficient QoS for real-time applications. Still in need of better performance, multicell environments that provide extended coverage allow the mobile station nomadic passage beyond a single cell by means of cell dissociation-association process known as handoff. This process poses a challenge for real-time applications like voice over IP (150 ms maximum delay) and video (200–400 ms) sessions, to give the user a seamless cell-crossing without data loss or session breakage. It presented an approach of a predictive fuzzy Logic controller to reduce the channel scanning process to a tenth of the standard time, and its efficient FPGA implementation to speed up the processing time. The algorithm of the fuzzy controller was implemented in C language. Experimental results are provided. |
| Databáze: | OpenAIRE |
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