New heading directional angle routing protocols for mobile ad hoc networks

Al-Akaidi, Marwan; Alchaita, M.

doi:10.1049/cp:20040650

Cited by 6 publications

(3 citation statements)

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“…It implies that random forwarding packets from the source to the destination can utilize azimuth angle as a substitute for traditional geographical information. Unfortunately, in the open literature, only Reference [20] and [21] consider partially utilizing angle information in routing.…”

Section: Introductionmentioning

confidence: 99%

Angle random forwarding (AnRaF) for wireless sensor networks: performances and realization

Dong¹,

Qiu²,

Zhang³

2008

Wireless Communications

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A novel random forwarding protocol for distributed wireless sensor networks (WSNs) is reported in this paper. The proposed protocol features the utilization of azimuth angle of the nodes involved and opportunistic selection of the relaying node via contention among neighbors. First, the protocol with precise angle information is discussed and its multi-hop performance is evaluated by means of both simulation and analysis in terms of average number of hops to the sink node. Simulation results show that it performs well especially in network connectivity. As a complement, node mobility is also introduced to evaluate multi-hop performance in real environments. Then, a simple MAC scheme to ensure that the node with the highest angular advantage will be selected as a relay is proposed, and subsequently energy and latency performances based on it are evaluated. It is shown that our protocol can effectively deliver data with half number of active neighbors required in geographical random forwarding (GeRaF). Finally, a practical method is presented to estimate azimuth angle, combined with which, our forwarding protocol is shown to achieve the performance very close to the case with precise angle information. tain delay constraints [2]. This imposes two important factors, energy efficiency and transmission latency, into the consideration of multi-hop packet forwarding or routing strategies in WSNs.In many routing protocols, nodes should have full knowledge of the local or even global network topology such as STEM [3], GEAR [4], or GEM [5], etc. Though topology information can be obtained at some prices of signaling and computing, it is not easy to do so in a WSN, for (1) energy and latency being two AnRaF FOR WSNs 991 ϑ = min(θ 1 , θ 2 , · · · θ k ), k > 0 2π, k = 0 (2) Throughout the above assumptions, the event that the two nodes think they are the relay can be avoided. Energy and Latency AnalysisIn this section, we analyze the energy and latency performance of our protocol under the assumption that N MaxAtt → ∞ and N MaxColl → ∞. AnRaF FOR WSNs 997 5.1.2. ReceivingAll active neighbors in communication region of the transmitter will have the same probability of being the winner to act as a relay, and the number of nodes obeys Poisson distribution with density M. Thus, the probability that a neighbor wins the contention is ∞ k=1

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Section: Introductionmentioning

confidence: 99%

Angle random forwarding (AnRaF) for wireless sensor networks: performances and realization

Dong¹,

Qiu²,

Zhang³

2008

Wireless Communications

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“…However, this is not always acceptable especially when information security and integrity is an important issue of the application [7][8][9][10][13][14]. This issue of information security and packet integrity is well exemplified and illustrated in the Telecare project [1], which is a healthcare project concerned with designing and developing a self-configurable and reliable framework based on wireless mobile ad hoc networks (MANETs) [1][2][3][4][5][6][7][8][9][10][11][12]. The specific characteristics of a MANET, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…mobility, power consumption, bandwidth-constraint, dynamic topologies and limited physical security makes designing efficient routing protocols a fundamental challenge. New ad hoc routing protocols were developed by AlAkaidi et al [1][2][3][4][5][6], based on the Heading-direction Angles Routing Protocols (HARP). The Heading Direction Angle (HDA) approach is a promising approach for overcoming some of the problems encountered in ad hoc networks, such as handling the frequent changes in the network topology due to mobility and maintaining the long-lived multi-hop paths between two communicating nodes.…”

Section: Introductionmentioning

confidence: 99%

Security Issues in Wireless Ad Hoc Networks and the Application to the Telecare Project

Aziz

Al-Akaidi

2007

2007 15th International Conference on Digital Signal Processing

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The Telecare project is a healthcare application aimed at minimizing the institutionalization of elderly people and patients with mobility problems and reducing the cost and burden of elderly care for the healthcare system. In this paper we investigate the utilisation of mobile ad hoc networks in the Telecare project from the view point of network security and information integrity, especially considering the fact that one main challenge in designing ad hoc networks is their vulnerability to security attacks, which is a major concern for many security sensitive applications. We have also looked at some of the threats that ad hoc network faces and the security goals to be achieved in the case of the Telecare system. Finally we have examined the main attributes of secure ad hoc networks in the light of the Telecare system, and discuss a possible solution through the use of publickey cryptography and digital signature approach.Index Terms-wireless ad hoc networks, wireless security, MANETs, Public-key encryption.

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