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| Titel: |
An Interference-Aware Routing Algorithm for Multimedia Streaming Over Wireless Sensor Networks |
| Auteur: |
Shuang Li Raghu Kisore Neelisetti Cong Liu Santosh Kulkarni Alvin Lim |
| Verschenen in: |
The international journal of multimedia & its applications |
| Paginering: | Jaargang 2 (2010) nr. 1 pagina's 10-30 |
| Jaar: |
2010 |
| Inhoud: |
Wireless sensor networks are originally designed as distributed event-based systems that differ fromtraditional communication networks in several ways. These networks typically have nodes with severeenergy constraints, variable quality links, low data-rate and many-to-one event-to-sink flows. Recently,Wireless Multimedia Sensor Networks (WMSNs) have been developed due to the availability of low-costcameras, microphones, and other sensors producing multimedia data. The applications, accordingly, areextended to video surveillance and notification, video and computer assistance in video-assisted livingand healthcare. The stringent requirements of real-time multimedia applications include end-to-enddelay, bandwidth and loss during data transmission. Communication algorithms for WMSN musttherefore be specially designed to operate efficiently under these constraints. Directed diffusion is a datacentricprotocol designed for wireless sensor networks. However, it is not efficient in more challengingdomains, such as video sensor networks, because of its inability to satisfy the throughput and delayrequirements of multimedia data. Instead, we propose EDGE a greedy algorithm based on directeddiffusion that reinforces routes with high link quality and low latency, thus maximizing throughput andminimizing delay. ETX (Expected Transmission Count) is used as the metric for measuring link quality.This paper presents an improved method for computing aggregate ETX for a path that increases end-toendthroughput. NS-2 simulation results with video data as CBR (constant bit rate) traffic show that ourproposed distributed algorithm selects routes that give better throughput and jitter than those reinforcedby standard directed diffusion, while maintaining low delay, thereby improving the performance ofwireless sensor network for multimedia data transmission. |
| Uitgever: |
Academy & Industry Research Collaboration Center (AIRCC) (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 3 van 16 gevonden artikelen
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