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Energy-efficient video transmission is of vital importance in achieving green communications. In this paper, we propose an energy efficient video streaming algorithm for Dynamic Adaptive HTTP Streaming (DASH) which has been a popular video content delivery mechanism. Specifically, we consider the problem of jointly optimizing network resource allocation and video quality adaptation by exploiting knowledge...
This paper presents a distributed time slot assignment algorithm which adopts TDMA as medium access control, specially suited to support applications with tight delay, jitter and throughput requirements in convergecast traffic network, e.g. wireless multimedia surveillance sensor network. The proposed algorithm basically consists of two parts. The first part is the slot assignment for single node,...
Wireless sensor networks (WSNs) consist of a large number of wireless sensor nodes that organize themselves into multi-hop radio networks. With different link quality, different distance to the sink, etc., nodes in a network are not treated equally, especially in the network with high traffic. In this paper, we propose a fairness spatial reuse time division multiple access (TDMA) scheduling algorithm...
This work proposes a TDMA jitter minimization algorithm to improve the performance of real-time applications in wireless sensor networks. Our algorithms can significantly reduce jitter in a sensor network using a TDMA-based Medium Access Control protocol. The proposed algorithm basically consists of two parts, the first part is jitter minimization. It minimizes jitter in every node for dynamically...
Congestion in a Wireless Sensor Network (WSN) can cause packet loss, low energy efficiency, and long delay. Moreover, some applications, e.g. multimedia and image, need to transmit large volumes of data concurrently from several sensors. These applications have different delay and QoS requirements. Congestion problem is more significant in such applications. To address this challenge, we propose an...
Congestion in a Wireless Sensor Network (WSN) can cause missing packets, low energy efficiency, and long delay. Moreover, some applications, e.g. multimedia and image, need to transmit large volumes of data concurrently from several sensors. These applications have different delay and QoS requirements. Congestion problem is more urgent in such applications. To address this challenge, we propose an...
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