Jaykumar Sheth

Enhancing the energy efficiency of WiFi IoT stations introduces unique challenges compared to 802.15.4 and BLE. The four essential operations performed to ensure connectivity between stations and the access point in a WiFi network are association, periodic beacon reception, maintaining association, and station wake up. Understanding and enhancing t...

The broad deployment of 802.11 (a.k.a. Wi-Fi) access points and the significant energy-efficiency improvement of 802.11 transceivers have resulted in increasing interest in building 802.11-based Internet of Things (IoT) systems. Unfortunately, the power saving mechanisms of 802.11 fall short when used in IoT applications, especially because they do...

The broad deployment of 802.11 (a.k.a., WiFi) access points and significant enhancement of the energy efficiency of these wireless transceivers has resulted in increasing interest in building 802.11-based IoT systems. Unfortunately, the main energy efficiency mechanisms of 802.11, namely PSM and APSD, fall short when used in IoT applications. PSM i...

Increasing the number of IoT stations or regularstations escalates downlink channel access contention and queu-ing delay, which in turn result in higher energy consumption andlonger communication delays with IoT stations. To remedy thisproblem, this paper presentsWiotap, an enhanced WiFi accesspoint that implements a downlink packet scheduling mech...

The significant growth in the number of WiFi-enabled devices as well as the increase in the traffic conveyed through wireless local area networks (WLANs) necessitate the adoption of new network control mechanisms. Specifically, dense deployment of access points, client mobility, and emerging QoS demands bring about challenges that cannot be effecti...

The significant growth in the number of WiFi-enabled devices as well as the increase in the traffic conveyed through wireless local area networks (WLANs) necessitate the adoption of new network control mechanisms. Specifically, dense deployment of access points, client mobility, and emerging QoS demands bring about challenges that cannot be effecti...