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Bluetooth Low Energy (BLE) is a personal area wireless network technology that is of increasing importance for emerging Internet of Things (IoT) deployments. By design, BLE supports short-range, single-hop communication between a pair of BLE devices. As such, native BLE does not allow network-based policy control or in-network functions for service enhancement. These limitations are impediments to...
Bluetooth Low Energy (BLE) is a low-energy personal area wireless network technology that is of increasing importance for large-scale Internet of Things (IoT) deployment. By design, BLE is localized to small regions and to simple network topologies. Moreover, it is not designed for dynamic enforcement of policy and access controls. These limitations are impediments to BLE based IoT service deployment,...
The growth of smart devices with their diverse applications and services making the network activities at the edge unique. Specially in the context of bringing the resources within one wireless hop distance away from the end users to provide latency sensitive, privacy aware, and high bandwidth applications, rising new challenges of network management and control capabilities at the wireless network...
In wireless network edges, knowing the network flow types and applications can enable various policy-driven network managements (i.e. traffic offloading, BYOD, E2E QoS etc.). However, applying network policies at wireless links between the mobile devices and access points (APs) requires greater visibility and control on generated traffic generated from mobile devices. The recent advent of Software-Defined...
We are experiencing huge growth of video streaming traffic, which is creating big challenges for video providers in guaranteeing a satisfactory level of viewing experience to end users. Furthermore, the increase in video streaming demands on mobile devices over dynamic wireless links is creating another obstacle toward providing a high quality video service. In order to overcome most of these challenges,...
In this paper, we utilize a novel communication framework Acoustic-WiFi to develop a smart contention resolution scheme Harmony among the contending devices to address the overhead of the traditional Wi-Fi backoff scheme (i.e. contention window countdown, DIFS) and reduce the overall collisions among the devices. Harmony uses the acoustic channel for contention resolution in Wi-Fi networks. To the...
In this paper, we design, implement and evaluate the SpyLoc localization system. The design goal of SpyLoc is to develop a light weight and high accuracy localization system for off-the-shelf smartphones. SpyLoc leverages both the acoustic interface (microphone/speaker) and the Wi-Fi interface at the kernel-level of smartphones as well as the inertial sensors in smartphones to achieve high localization...
An important tool of the Lean management is the “Spaghetti Diagram”, which helps to establish the optimum layout for a department or a ward based on the movements performed by patients, staff and/or products (e.g., x-ray machines). The spaghetti diagram is usually created manually in which the movements of staff members and/or patients are visually observed. In our previous work, we reported the development...
Mobile devices such as smartphones have a number of sensors that can be exploited to solve a number of problems related to health care delivery. In this paper we use accelerometer, gyroscope, and compass sensors on smart-phones to solve a location tracking problem common to many emergency departments. An emergency department typically has unique characteristics including not being friendly to be visually...
In this paper, we design, implement and evaluate RF-Beep — a high-accuracy, one-way sensing, energy efficient and light-weight ranging scheme for smart devices. RF-Beep is based on the well known Time-Difference-of-Arrival (TDoA) scheme that utilizes the different propagation speeds of both the acoustic and the radio-frequency (RF) signals. Unlike the previous works, RF-Beep utilizes both the audio...
Tracking energy consumption for individual operating machines (e.g., home appliance) is a prerequisite for making energy conservation and management efficient. In order to meet the requirement for monitoring home energy consumption, several industries and researchers came up with different solutions. Unfortunately, all these solutions require invasive and expensive installation of sensor devices....
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