چکیده:
Routing in wireless sensor networks is one of the main challenges which directly influences the reliability and efficiency of the network. In this research, we combined several flows using inter-coding technique and hierarchical tree alternative path (HTAP) technique in order to efficiently control the congestion. It uses random network coding idea to increases network efficiency and decreases the congestion implicitly. Also, it explicitly reroutes the congested flows along alternative paths when the congestion condition is detected in congested nodes. The proposed method was simulated in different scenarios using MATLAB software and the simulation results showed that it decreases the number of transmitted packets, improves efficiency, and decreases energy consumption in comparison to original HTAP.
خلاصه ماشینی:
In this research, we combined several flows using inter-coding technique and hierarchical tree alternative path (HTAP) technique in order to efficiently control the congestion.
In this paper, a new routing algorithm is presented, which combines data packets using both inter and intra-network coding idea and avoids congestion areas (or nodes) in the network by employing alternative paths.
The main advantage of the proposed algorithm is simultaneous control of network resources (via alternative paths) and traffic (via network coding) in order to improve network performance when facing the congestion.
We have used hierarchical tree alternative path (HTAP) [6] as a resource control scheme to reroute traffic around congested area by creating dynamic alternative routes to the sink.
In fact, MHTAP improves the performance when facing congestion by controlling the traffic through network coding and making alternative routes (i.
Network performance is examined in terms of packet delivery ratio (PDR) and total energy consumption (TEC) against the number of sensor nodes and source rate.
7 Receive Current (mA) 1024 Fragment Size (bit) 128K Buffer Size (Bytes) CSMA/CA MAC Layer (رجوع شود به تصویر صفحه) Figure 2- a) Uniform node distribution and b) grid topology 4-1- Network Size In these experiments, we aim to assess the scalability of MHTAP by examining its performance against network size.
MHTAP utilizes inter and intra-network coding techniques as well as alternative route hierarchical tree simultaneously in order to control the congestion.
Hierarchical Tree Alternative Path (HTAP) algorithm for congestion control in wireless sensor networks.