The Development of Enhanced Hash Mechanism for Improving Performance of IEEE 802.15.4

Shih, Bih-Yaw; Tseng, Jyun-Ying

doi:10.1109/isda.2008.302

Cited by 16 publications

(19 citation statements)

References 6 publications

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“…In the event that the coordinator stops functioning, the entire network is functionless because all traffic must travel through the center of the star. For the same reason, the coordinator could easily be a bottleneck to traffic within the network, especially for large scale ZigBee network which may have more than hundred of nodes [10].…”

Section: Star Topologymentioning

confidence: 99%

“…Since the message can take only one potential paths, this type of topology is not the most reliable topology. If a router fails, then all its children are cut off from communicating with the rest of the network [10].…”

Section: Tree Topologymentioning

confidence: 99%

“…Flexibility is present because a message can take multiple paths from source to destination. If a particular router fails, then ZigBee's self healing mechanism (make route discovery) will allow the network to search for an alternate path for the message to take [10].…”

Section: Mesh Topologymentioning

confidence: 99%

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Performance Comparison among (Star, Tree and Mesh) Topologies for Large Scale WSN based IEEE 802.15.4 Standard

Farej¹,

Abdul-hameed²

2015

IJCA

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This paper investigates the applicability of star, tree and mesh topology schemes for large scale Wireless Sensor Network (WSN) complying with IEEE 802.15.4 standard. The main focus of this work is to evaluate the performance of such network through simulation which is carried out via the discrete event OPNET simulator (version 14.5). The performance metrics of interest include throughput, end to end delay and packet drop rates. Performance comparison and analyses of different topologies have been made, and it is concluded that the selection of topology scheme depends on the application context.

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Section: Star Topologymentioning

confidence: 99%

Section: Tree Topologymentioning

confidence: 99%

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Performance Comparison among (Star, Tree and Mesh) Topologies for Large Scale WSN based IEEE 802.15.4 Standard

Farej¹,

Abdul-hameed²

2015

IJCA

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“…Shih, Bih-Yaw et al [7] suggest two channel selection methods to enhance the performance of IEEE 802.15.4 MAC. They used a hybrid channel selection method based on hashing technique.…”

Section: Iiirelated Workmentioning

confidence: 99%

Traffic-Aware Channel Allocation Scheme to Improve the Throughput of IEEE 802.15.4 based Wireless Sensor Networks

P.¹

2015

IJAREEIE

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Multi-channel MAC protocol is a vital solution to enhance the capacity of wireless sensor networks (WSNs). Most of the existing multi-channel MAC protocols allocate channels based on the neighboring nodes without considering the traffic density of each node. By considering different traffic weights of different nodes we can improve the channel capacity of wireless sensor networks. This paper presents traffic aware channel assignment method based on 3-hop neighborhood which enhances the throughput of 802.15.4 MAC by reducing the number of packets dropped. Simulation results using NS2 demonstrates improvement in throughput and reduction in average end to end delay. KEYWORDS:Wireless personal area networks; IEEE 802.15.4; packet drop rate; throughput; multi-channel MAC. I.INTRODUCTIONWSNs consist of large number of inexpensive and low power sensor nodes [1]. Numerous applications of WSN have been proposed, which includes habitat and environmental observation, calamity management, enemy detection etc. Distribution of sensor nodes in these applications is in random/fixed manner. Even though WSN is used for wide verity of applications there are some limitations for WSN. One of the major constraints is the low power capacity of sensor nodes. Each sensor node includes sensing, computing and communication units. Among these units communication unit consumes more power. During MAC design process minimizing the energy consumption of this unit is extremely important [2]. Communication characteristics and traffic pattern awareness contribute more in energy efficient MAC design.Medium access control (MAC) layer is the part of data link layer in the open system interconnection (OSI) layer model and is responsible for proper communication through the channel. Majority of the existing MAC protocols are based on single channel communication. In single channel MAC communication any node within the range can interfere with the ongoing transmission. This may lead to collision and packet loss. In a multi-hop wireless sensor network a successful packet transmission occurs after several retransmissions due to packet collisions. This degrades the network performance.Multi-channel MAC protocol supports parallel transmissions. Simultaneous multiple channel transmission reduces the need for retransmissions. This leads to decrease in packet loss and consequence improvement in the network performance. Most of the existing multi-channel MAC protocols allocate channels based on information about neighboring nodes. In a wireless sensor network, different nodes have different traffic requirements. Traffic pattern of wireless sensor network varies depending on its application. Collision rate of the network is directly proportional to the traffic density of the network. Considering the traffic rate of each node while allocating the channel will improve the performance of the network [3]. Fig. 1 illustrates the channel structure in ISM band.Physical layer can operate data packets with a maximum payload of 127 bytes. This standard has abi...

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“…Hashed is used to compute the random jitter time of node in each layer [9]. By configuring the random jitter time in communication process, the success rate of routing establishment can be greatly improved. )…”

Section: Conflict Avoidance Mechanism In Routing Establishing Processmentioning

confidence: 99%

A Routing Method Based on Wireless Sensor Network for Smart Meter Reading System

Wang

Ge²,

Wang³

et al. 2013

AMM

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Abstract. Smart meter reading system is the core of advanced metering infrastructure for Smart Grid. Wireless sensor network is an important means to realize the power information collection. Based on hierarchical strategy, this article proposed a method to establish routing in wireless smart meter reading system. This method provides reliable two-way communication routing, but also greatly reduces the collision probability of network communications. In order to verify the feasibility of the approach, a large number of simulation experiments were carried out. This idea has been applied in actual engineering practice.

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The Development of Enhanced Hash Mechanism for Improving Performance of IEEE 802.15.4

Cited by 16 publications

References 6 publications

Performance Comparison among (Star, Tree and Mesh) Topologies for Large Scale WSN based IEEE 802.15.4 Standard

Performance Comparison among (Star, Tree and Mesh) Topologies for Large Scale WSN based IEEE 802.15.4 Standard

Traffic-Aware Channel Allocation Scheme to Improve the Throughput of IEEE 802.15.4 based Wireless Sensor Networks

A Routing Method Based on Wireless Sensor Network for Smart Meter Reading System

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