Hybrid Algorithm to Control Congestion in Wireless Sensor

被引：0

作者：

Pant, Neha ^{[1
]}

Ranjan, Rakesh ^{[2
]}

Singh, M. P. ^{[1
]}

机构：

[1] NIT Patna, Dept Comp Sci & Engn, Patna, Bihar, India

[2] MACET Patna, Dept Comp Sci & Engn, Patna, Bihar, India

来源：

INTERNATIONAL JOURNAL OF GRID AND DISTRIBUTED COMPUTING | 2014年 / 7卷 / 05期

关键词：

Wireless Sensor Networks; congestion; congestion control; congestion avoidance; congestion notification; resource control; traffic rate control;

D O I：

10.14257/ijgdc.2014.7.5.07

中图分类号：

TP31 [计算机软件];

学科分类号：

081202 ; 0835 ;

摘要：

The Congestion in wireless sensor networks occurs when packets arrive at a fully loaded buffer of a sensor node. Due to lack of space in the buffer, packets are dropped. It also leads to packet delay, retransmission of packets, reduced QoS and throughput. A hybrid of rate control and resource control algorithms can be used to control congestion considering the priority of the packets. Congestion is detected when the service time is greater than the inter-arrival time of packets. The inter-arrival time can be increased by a certain factor computed as congestion degree, thus reducing the rate of sending packets. The congestion degree which is the ratio of service time to inter-arrival time can be sent to the sources. The sources can then adjust the rate of sending packets accordingly to control congestion in the upstream nodes. At the time of congestion, high priority packets are sent using multiple paths after increasing the time between generations of packets thus decreasing the rate of sending packets. Low priority packets are sent using a single path after decreasing the packet sending rate thus increasing the time between sending consecutive packets. The method also serves as a hybrid of congestion control and congestion avoidance.

引用

页码：77 / 86

页数：10

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