Performance evaluation of an IEEE 802.15.4 sensor network with a star topology

Singh, Chandramani; Kumar, Anurag; Ameer, P. M.

doi:10.1007/s11276-007-0043-8

Cited by 94 publications

(52 citation statements)

References 14 publications

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“…Issues related to the MAC unreliability, in terms of packet drop probability, have been addressed in [26,27,28,29]. Shu et al [26] consider a star network and assume that (i) all nodes attempt to transmit a packet at the beginning of the active period and, (ii) the acknowledgment mechanism is disabled.…”

Section: Related Workmentioning

confidence: 99%

A Comprehensive Analysis of the MAC Unreliability Problem in IEEE 802.15.4 Wireless Sensor Networks

Anastasi

Conti

Francesco

2011

IEEE Trans. Ind. Inf.

191

121

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-Wireless Sensor Networks (WSNs) represent a very promising solution in the field of wireless technologies for industrial applications. However, for a credible deployment of WSNs in an industrial environment, four main properties need to be fulfilled, i.e., energy efficiency, scalability, reliability, and timeliness. In this paper we focus on IEEE 802.15.4 WSNs and show that they can suffer from a serious unreliability problem. This problem arises whenever the power management mechanism is enabled for energy efficiency, and results in a very low packet delivery ratio, also when the number of sensor nodes in the network is very low (e.g., 5). We carried out an extensive analysis -based on both simulation and experiments on a real WSN -to investigate the fundamental reasons of this problem, and we found that it is caused by the contention-based MAC (Medium Access Control) protocol used for channel access and its default parameter values. We also found that, with a more appropriate MAC parameters setting, it is possible to mitigate the problem and achieve a delivery ratio up to 100%, at least in the scenarios considered in this paper. However, this improvement in communication reliability is achieved at the cost of an increased latency, which may not be acceptable for industrial applications with stringent timing requirements. In addition, in some cases this is possible only by choosing MAC parameter values formally not allowed by the standard.

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Section: Related Workmentioning

confidence: 99%

A Comprehensive Analysis of the MAC Unreliability Problem in IEEE 802.15.4 Wireless Sensor Networks

Anastasi

Conti

Francesco

2011

IEEE Trans. Ind. Inf.

191

121

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“…2. This process of autonomous modulation detection and adaptive modulation to maintain the signal to interference ratio (SIR) is repeated in all the relay nodes till the destination node [10]. The capability provided at each node to perform multiple tasks is illustrated in Fig.…”

Section: Optimization Processmentioning

confidence: 99%

Optimizing Network Layer with Adaptive Modulation for Time Varying Channel

Navaneethan

Prabha²

2016

Wireless Pers Commun

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A finite group of nodes placed in the network layer for inter process communication has to guarantee specified performance measures like high throughput, low jitter, avoid contention, etc. At present, the data security is taken care by the upper layer i.e. Transport (TCP/IP) to some extent and the network layer has to simply deliver the packets in an optimal manner. The security now offered by the TCP/IP layer is in the form of retransmission for the corrupt packet(s). If the channel conditions are not good, then repeated retransmission requests, can lower the throughput, increase the jitter and render the network less useful. Hence, to ensure uniform SNR in each of the link, it is necessary to place critical design issues intrinsically in the individual nodes. This includes, for example, that, each node can autonomously detect the modulation and demodulate among a group set, and thereby support dynamic/adaptive modulation capability. This can enable the node to alter the modulation to maintain a uniform SNR and reduce the outage probability. Additionally, the communication strategy need to look for the shortest path, identify the channel support in that path and choose the best modulation based on shortest path algorithm. In this context, in this paper, each node is provided with the capability to perform (a) Autonomous Modulation (to maintain uniform SNR) (b) Switch to the corresponding demodulator and get the packet (reduces contention) and (c) route the packets to the next intended node through the shortest path (reduces jitter). This process is recursively done at every node as and when they receive the data. The metrics studied include the network layer metrics, wireless channel related metrics, modulation based aspects etc.

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“…Each super-frame has two parts active and inactive part. Active part is composed of: a beacon, a contention access period (CAP) and a contention free period (CFP) [12]. IEEE 802.15.4 standard is responsible for acknowledging frame delivery, frame validation, beacon management, GTS management, channel access mechanism, supervise device security etc [13].…”

Section: Vehicular Ad-hoc Networkmentioning

confidence: 99%

Collision Avoidance Protocol for Inter Vehicular Communication

Roy¹,

Das²

2015

IJCATR

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Vehicle to vehicle communication can give us better results by avoiding the major problems in road like collision of vehicles, better route selection in case of traffic congestion, fuel consumption, suitable selection of parking place etc. This paper presents a protocol to avoid the collision of vehicles. High mobility and fast topology changes are the characteristics of Vehicular Adhoc Networks (VANETs). To establish the real world environment for VANETs, network simulator NS2 is used. Medium Access Control (MAC) Protocol is used to avoid the collision of transmitted data. The Simulation is done using the proposed Vehicular Adhoc On-demand Distance Vector (VAODV) routing protocol, which is a modification of Ad-hoc On-demand Distance Vector (AODV) routing protocol. The proposed VAODV protocol is continuously checks the distance, speed of each vehicle and if it finds that the distance between vehicles is continuously decreasing then in this case it will send a warning textual message to those vehicles that are in accidental situation. Based on this textual information these vehicles will take particular action like vehicle may choose new route if it exists or it may slow down its own speed or it may stop moving by pressing brake. The experimental results are used to find out the performance of VAODV protocol. The performance of VAODV protocol is analyzed with different parameters like end to end delay, throughput, packet delivery ratio, normalized routing load etc.

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Performance evaluation of an IEEE 802.15.4 sensor network with a star topology

Cited by 94 publications

References 14 publications

A Comprehensive Analysis of the MAC Unreliability Problem in IEEE 802.15.4 Wireless Sensor Networks

A Comprehensive Analysis of the MAC Unreliability Problem in IEEE 802.15.4 Wireless Sensor Networks

Optimizing Network Layer with Adaptive Modulation for Time Varying Channel

Collision Avoidance Protocol for Inter Vehicular Communication

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