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.

A position-based multi-zone routing protocol for wide area mobile ad-hoc networks

Abstract: We propose a proactive, position-based routing protocol that provides an alternative, simplified way of localizing routing information overhead, without having to resort to complex, multiple-tier hierarchical routing organization schemes. This is achieved by integrating the functions of routing and mobility management via the use of geographic position, and the generalization of the routing zone concept. The proposed protocol controls routing overhead generation and propagation by making the overhead generation rate and propagation distance directly proportional to the amount of change in a node's geographic position. In our protocol, a set of geographic routing zones is defined for each node, where the purpose of the ith routing zone is to contain propagation of position updates advertising position differentials equal to the radius of the (i-l)th routing zone. Finally, we show through simulation that the proposed routing protocol is a bandwidth-efficient routing mechanism that can be applied across large scale networks.

AODV-PA: AODV with path accumulation

Abstract: Ad hoc networks meet the demands of spontaneous network set-up. They are characterized by the use of wireless links, dynamically changing topology, multi-hop connectivity and decentralized routing mechanisms and decision-making. AODV and DSR are the two most widely studied on-demand ad hoc routing protocols. Previous studies have shown limitations of these protocols in certain network scenarios. To improve the performance of AODV, we modify AODV to include the source route accumulation feature of DSR. We call this AODV with path accumulation. This protocol optimizes AODV to perform effectively in terms of routing overhead and delay during high load. The performance of the protocol is evaluated by a simulation model under a variety of network conditions. We also compare its performance with that of unmodified AODV and DSR. We demonstrate how a small change to the AODV protocol can lead to significantly improved performance results.

SecMR – a secure multipath routing protocol for ad hoc networks

Abstract: Multipath routing in ad hoc networks increases the resiliency against security attacks of collaborating malicious nodes, by maximizing the number of nodes that an adversary must compromise in order to take control of the communication. In this paper, we identify several attacks that render multipath routing protocols vulnerable to collaborating malicious nodes. We propose an on-demand multipath routing protocol, the secure multipath routing protocol (SecMR), and we analyze its security properties. Finally, through simulations, we evaluate the performance of the SecMR protocol in comparison with existing secure multipath routing protocols.

Reliable Data Delivery With the IETF Routing Protocol for Low-Power and Lossy Networks

Abstract: The IPv6 routing protocol for low-power and lossy networks (RPL) has been recently standardized by the Internet Engineering Task Force (IETF) routing protocol for low-power and lossy networks (ROLL) working group to support IPv6 routing for resource-constrained devices in industrial, home, and urban environments. However, several studies have shown that RPL may experience (very) low delivery rates, particularly in large-scale deployments. In this paper, we provide an in-depth analysis of the protocol attributes and design choices that generate such unreliability issues. Then, we describe and evaluate a new implementation of the RPL standard for the Contiki operating system (OS) to improve data delivery reliability. The salient feature of our RPL implementation is to adopt a flexible cross-layering design that provides simple routing optimizations, enhanced link estimation capabilities, and efficient management of neighbor tables. In order to verify the effectiveness of our RPL implementation, we use an advanced metering infrastructure (AMI) as a case study. Results obtained using Cooja emulator in two sets of experiments, differentiated by the presence or lack of duty cycling, indicate that our RPL implementation outperforms the one provided in Contiki in terms of average packet delivery rates by up to 200% in networks with 100 nodes.