Topic
Hazy Sighted Link State Routing Protocol
About: Hazy Sighted Link State Routing Protocol is a research topic. Over the lifetime, 6936 publications have been published within this topic receiving 169377 citations. The topic is also known as: HSLS.
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13 Mar 2005
TL;DR: It is shown that in the presence of high number of sources, the proposed mesh-based multicast routing protocol reduces the control packet load, increases the multicast efficiency by 10 to 20 percent and improves the data delivery ratio of ODMRP.
Abstract: We propose a mesh-based multicast routing protocol for wireless ad hoc networks. The protocol retains all of the advantages of the on-demand multicast routing protocol (ODMRP) such as high packet delivery ratio under high mobility, high throughput. Moreover, the protocol significantly reduces control overhead, one of the main weaknesses of ODMRP, under the presence of multiple sources. This feature is a crucial contributing factor to the scalability of multicast routing for mobile ad hoc networks. The results are experimentally verified. It is shown that in the presence of high number of sources, our protocol reduces the control packet load by up to 30 percent, increases the multicast efficiency by 10 to 20 percent and improves the data delivery ratio of ODMRP.
55 citations
13 Oct 2003
TL;DR: The classic link-state protocol OSPF and OLSR are studied, a link state protocol that was developed specifically for ad-hoc networks, and how this overhead evolves when the node density increases is studied.
Abstract: Link state has been the dominating IGP routing technology in IP networks for more than a decade. With the advent of wireless ad-hoc networking, the need for light, efficient and robust routing makes it a good candidate to be also used in this constrained environment. One of the key issue in ad-hoc networking is the lack of bandwidth. Thus, in this paper we examine the overhead due to link state routing in an ad-hoc network. More precisely we study the classic link-state protocol OSPF and OLSR, a link state protocol that was developed specifically for ad-hoc networks. Further, we study how this overhead evolves when the node density increases. The last part of the paper presents directions towards extending OSPF for wireless and ad-hoc networks, which would make it a favorite to seamlessly unify wired and mobile IP networks.
55 citations
TL;DR: This paper explores the performance of two very well-known routing paradigms, directed diffusion and Energy-Aware Routing, and a routing algorithm, named SIR, which has the novelty of being based on the introduction of neural networks in every sensor node.
55 citations
TL;DR: Results demonstrate efficient balancing of energy consumption across all nodes, an average increase of up to 40% in network lifetime corresponding to a modest average increase in energy per bit, and a cutoff effect on required transmission power to achieve reliable connectivity.
Abstract: Global routing protocols in wireless body area networks are considered. Global routing is augmented with a novel link cost function designed to balance energy consumption across the network. The result is a substantial increase in network lifetime at the expense of a marginal increase in energy per bit. Network maintenance requirements are reduced as well, since balancing energy consumption means all batteries need to be serviced at the same time and less frequently. The proposed routing protocol is evaluated using a hardware experimental setup comprising multiple nodes and an access point. The setup is used to assess network architectures, including an on-body access point and an off-body access point with varying number of antennas. Real-time experiments are conducted in indoor environments to assess performance gains. In addition, the setup is used to record channel attenuation data which are then processed in extensive computer simulations providing insight on the effect of protocol parameters on performance. Results demonstrate efficient balancing of energy consumption across all nodes, an average increase of up to 40% in network lifetime corresponding to a modest average increase of 0.4 dB in energy per bit, and a cutoff effect on required transmission power to achieve reliable connectivity.
54 citations
01 Jan 2003
TL;DR: QoS performance of AODV is improved by implementing link stability parameter, which is a standalone network parameter that could be improved when networks are subjected to topological changes, to variations in traffic loading patterns.
Abstract: In an ad hoc network, the topology varies as a result of the mobility of its mobile hosts. Consequently, the task of performing ad hoc network routing is more complex and less efficient. Many ad hoc network routing protocols have been proposed. However, more work is required in developing scalable ad hoc routing protocols that support quality-of-service (QoS). Recently, our study shows that link stability (in term of link survival time) has great impact on QoS performance of routing in ad hoc networks. We developed a number of models which effectively estimate link stability for different network movement patterns. By implementing link stability, which is a standalone network parameter, the QoS performance of varieties of ad hoc routing algorithms could be improved when networks are subjected to topological changes, to variations in traffic loading patterns (including a multitude of traffic classes). In this paper, we show that QoS performance of AODV is improved by implementing link stability parameter.
54 citations