Intellectual Technologies on Transport Intellectual Technologies on Transport Интеллектуальные технологии на транспорте 2413-2527 81722 10.20295/2413-2527-2024-137-84-92 МЕТОДЫ И СИСТЕМЫ ЗАЩИТЫ ИНФОРМАЦИИ, ИНФОРМАЦИОННАЯ БЕЗОПАСНОСТЬ Methods and systems of information protection, information security МЕТОДЫ И СИСТЕМЫ ЗАЩИТЫ ИНФОРМАЦИИ, ИНФОРМАЦИОННАЯ БЕЗОПАСНОСТЬ Investigating Unnecessary Handoff in Wlan Networks: Challenges and Recent Advances Изучение необязательной энергопередачи в сетях WLAN: проблемы и последние достижения Шакер Махмуд Мохаммед Shaker Mahmud Mohammed mohammedshakir@scrdiraq.gov.iq

кандидат технических наук;

candidate of technical sciences;

 Модер Халил Маад Moder Halil Maad Maad.khalil@uodiyala.edu.iq

кандидат технических наук;

candidate of technical sciences;

 Министерство высшего образования и научных исследований Ирака Багдад Ирак Ministry of Higher Education and Scientific Research Baghdad Iraq Университет Диялы Баакуба Ирак University of Diyala Baquba Iraq 14 04 2024 14 04 2024 1 84 92 13 04 2024 https://atjournal.ru/en/nauka/article/81722/view

В статье рассматривается проблема необязательной передачи данных в сетях WLAN и представлен обзор работ, посвященных процессам передачи активного соединения с одного устройства связи на другое без прерывания сеанса связи, обозначаемых термином «handoff». Рассматриваются основные аспекты архитектуры WLAN, включая станции WLAN, точки доступа, базовые наборы услуг и систему распределения. Основное внимание уделяется методам оптимизации передачи данных, включая активное и пассивное сканирование, аутентификацию и повторную ассоциацию. Приводятся результаты предыдущих исследований, а также обсуждаются преимущества и недостатки различных методов оптимизации передачи данных в сетях WLAN.

Recently, the issue of unnecessary handoff in WLAN networks has been the subject of recent research efforts. WLANs are designed to provide high-speed connectivity in a limited area, similar to their wired counterparts. The IEEE 802.11 Standard has become widely adopted for wireless LANs. The handoff algorithm allows mobile nodes to switch between access points (APs) as they move between areas serviced by different APs. However, determining when to initiate a handoff poses challenges, particularly concerning unnecessary handoffs. Many researchers have investigated this issue and have proposed mechanisms to address it. Thus, this study focuses on reviewing the related works about handoff and discusses the challenges and recent advances.

 WLAN handoff станции WLAN точки доступа базовые наборы услуг активное сканирование пассивное сканирование аутентификация повторная ассоциация WLAN Handoff 3G 4G access points networks

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