Principles of Wireless Networks: A Unified Approach
Principles of Wireless Networks: A Unified Approach
TOSSIM: accurate and scalable simulation of entire TinyOS applications
Proceedings of the 1st international conference on Embedded networked sensor systems
An adaptive energy-efficient MAC protocol for wireless sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Medium access control with coordinated adaptive sleeping for wireless sensor networks
IEEE/ACM Transactions on Networking (TON)
Proceedings of the conference on Design, Automation and Test in Europe - Volume 1
Performance of a Beacon Enabled IEEE 802.15.4 Cluster with Downlink and Uplink Traffic
IEEE Transactions on Parallel and Distributed Systems
Analysis of the contention access period of IEEE 802.15.4 MAC
ACM Transactions on Sensor Networks (TOSN)
A survey on wireless multimedia sensor networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
ECRTS '07 Proceedings of the 19th Euromicro Conference on Real-Time Systems
Performance analysis of low rate wireless technologies for medical applications
Computer Communications
A survey of multimedia streaming in wireless sensor networks
IEEE Communications Surveys & Tutorials
IEEE Communications Magazine
IEEE Communications Magazine
Zombee: a home automation prototype for retrofitted environments
Proceedings of the 2nd International Conference on PErvasive Technologies Related to Assistive Environments
Optimized orphan algorithm for IEEE 802.15.4 networks
ISWCS'09 Proceedings of the 6th international conference on Symposium on Wireless Communication Systems
A multi-channel approach for video forwarding in wireless sensor networks
CCNC'10 Proceedings of the 7th IEEE conference on Consumer communications and networking conference
A cross-layer solution for enabling real-time video transmission over IEEE 802.15.4 networks
Multimedia Tools and Applications
Robust Image Transmission Over Wireless Sensor Networks
Mobile Networks and Applications
A monitoring system for intensive agriculture based on mesh networks and the android system
Computers and Electronics in Agriculture
An adaptive collision resolution scheme for energy efficient communication in IEEE 802.15.4 networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
QoS in Wireless Multimedia Sensor Networks: A Layered and Cross-Layered Approach
Wireless Personal Communications: An International Journal
Journal of High Speed Networks
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Recently, there has been a growing demand to incorporate multimedia content delivery over the Wireless Sensor Networks (WSNs). This feature could not only enhance several existing applications in the commercial, industrial, and medical domains, but could also spur an array of new applications. However, the efficient gathering of still images, audio, and video information in WSNs imposes stringent requirements on the throughput and energy consumption. Most wireless communication standards with high or moderate data throughputs do not focus primarily on energy efficiency. The IEEE 802.15.4 WPAN standard provides a widely accepted solution for low-cost and low-power wireless communication, with a potential to cater to many types of application scenarios. IEEE 802.15.4 MAC includes features such as its dual operational modes (Non-Beacon-enabled mode/Beacon-enabled mode), which make this standard more attractive for providing multimedia services over the networked sensors. Its Beacon-enabled mode can conserve energy by using the RF sleep mechanism, but it is limited by the lower data throughput. On the other hand, the Non-Beacon-enabled mode can offer higher data throughput but at the expense of significant energy consumption, mainly due to the idle listening problem. In order to overcome these issues, we propose an enhancement to IEEE 802.15.4, named TEA-15.4, which adaptively adjusts the active period based on traffic information. To detect data traffic in the network, the proposed scheme utilizes two techniques: Arbitrary Traffic Signal (ATS) and Traffic Time-Out (TTO). By utilizing these two techniques, the proposed TEA-15.4 can not only support enough data throughput to carry out multimedia communications, but also offer lower energy consumption for the sensing device in WSNs. For performance evaluations, we implement our proposed scheme and the IEEE 802.15.4 full-standard on the TinyOS. Based on the results gathered from testbed experiments and the TOSSIM simulator, TEA-15.4 is shown to be a suitable mechanism for Wireless Multimedia Sensor Networks (WMSNs).