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Efficient Multi-Path Protocol For Wireless Sensor Networks

2010
Journal from gdlhub / 2017-08-14 11:52:32
Oleh : Shuang Li , Raghu Kisore Neelisetti , Cong Liu , Alvin Lim, International Journal of Wireless & Mobile Networks (IJWMN)
Dibuat : 2012-06-23, dengan 1 file

Keyword : Wireless Multimedia Sensor networks, QoS, real-time, throughput, delay.
Subjek : Efficient Multi-Path Protocol For Wireless Sensor Networks
Url : http://airccse.org/journal/jwmn/0210s9.pdf
Sumber pengambilan dokumen : Internet

Wireless sensor networks are useful for streaming multimedia in infrastructure-free and hazardous


environments. However, these networks are quite different from their wired counterpart and are


composed of nodes with constrained bandwidth and energy. Multiple-path transmission is one of the


methods for ensuring QoS routing in both wired and wireless environment. Directed diffusion, a well


known wireless sensor network protocol, only routes packets through a single path, which barely meets


the throughput requirement of multimedia data. Instead, we propose a multipath algorithm based on


directed diffusion that reinforces multiple routes with high link quality and low latency. This algorithm


retains the merits of the original directed diffusion algorithms, including its energy efficiency and


scalability. A hybrid metric of link quality and latency is used as the criterion for path selection. In order


to select disjoint paths, we propose a scheme for reinforced nodes to respond negatively to multiple


reinforcement messages. We use the NS-2 simulation tool with video trace generated by Multiple


Description Coding (MDC) to evaluate the performance. The results show that our algorithm gives better


throughput and delay performance, i.e higher video quality, than standard directed diffusion that


transmits over a single path, with low overheads and energy consumption.

Deskripsi Alternatif :

Wireless sensor networks are useful for streaming multimedia in infrastructure-free and hazardous


environments. However, these networks are quite different from their wired counterpart and are


composed of nodes with constrained bandwidth and energy. Multiple-path transmission is one of the


methods for ensuring QoS routing in both wired and wireless environment. Directed diffusion, a well


known wireless sensor network protocol, only routes packets through a single path, which barely meets


the throughput requirement of multimedia data. Instead, we propose a multipath algorithm based on


directed diffusion that reinforces multiple routes with high link quality and low latency. This algorithm


retains the merits of the original directed diffusion algorithms, including its energy efficiency and


scalability. A hybrid metric of link quality and latency is used as the criterion for path selection. In order


to select disjoint paths, we propose a scheme for reinforced nodes to respond negatively to multiple


reinforcement messages. We use the NS-2 simulation tool with video trace generated by Multiple


Description Coding (MDC) to evaluate the performance. The results show that our algorithm gives better


throughput and delay performance, i.e higher video quality, than standard directed diffusion that


transmits over a single path, with low overheads and energy consumption.

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