Author: Chien-Ming ChenPublisher:
ISBN:
Category : Algorithms
Languages : en
Pages : 0
Book Description
Performance Analysis of Routing Algorithms of RD-C/TDMA Packet Radio Networks Under Dynamic Random Topology
Author: Chien-Ming ChenPublisher:
ISBN:
Category : Algorithms
Languages : en
Pages : 0
Book Description
Scientific and Technical Aerospace Reports
Author: Performance Analysis and Optimal Routing in Packet Radio Networks
Author: Hsien-Chuen YuDesign and Analysis of a Speed-Aware Routing Protocol for Mobile Ad Hoc Networks
Author: Kirthana AkunuriPublisher:
ISBN:
Category : Ad hoc networks (Computer networks)
Languages : en
Pages : 0
Book Description
"The flexibility of movement for the wireless ad hoc devices, referred to as node mobility, introduces challenges such as dynamic topological changes, increased frequency of route disconnections and high packet loss rate in Mobile Ad hoc Wireless Network (MANET) routing. This research proposes a novel on-demand routing protocol, Speed-Aware Routing Protocol (SARP) to mitigate the effects of high node mobility by reducing the frequency of route disconnections in a MANET. SARP identifies a highly mobile node which forms an unstable link by predicting the link expiration time (LET) for a transmitter and receiver pair. When the nodes have high relative velocity, the LET calculated is a small value; this means that the link is predicted to disconnect before the successful transmission of a specific demand. SARP omits such a packet-sending node from the link route during the route discovery phase. The omission of such unstable links helps SARP limit the flooding of control packets during route maintenance and reduces the overall control overhead generated in on-demand routing protocols. NS2 was used to implement the SARP with ad hoc on-demand vector (AODV) as the underlying routing algorithm. Extensive simulations were then conducted using Random Waypoint Mobility model to analyze the performance of SARP. The results from these simulations demonstrated that SARP reduced the overall control traffic of the underlying protocol AODV significantly in situations of high mobility and dense networks; in addition, it showed only a marginal difference as compared to AODV, in all aspects of quality-of-service (QOS) in situations of low mobility and sparse networks"--Abstract, leaf iii
Interconnection algorithms in multi-hop packet radio topologies
Author: P. Papantoni-KazakosPublisher:
ISBN:
Category :
Languages : en
Pages : 80
Book Description
We consider a two-cluster system in multi-hop packet radio topologies. Each cluster deploys a limited sensing random access algorithm, and contains local users who transmit their packets only via the algorithm in their own cluster. The system also contains marginal users, who may transmit their packers via either one of the algorithms in the two clusters. For the above system, we adopt a limited sensing random access algorithm per cluster that has been previously studied. This algorithm utilizes binary, collision versus noncollision, feedback per slot, and in the presence of the limit Poisson user model and the absence of marginal back per slot, and in the presence of the limit Poisson user model and the absence of marginal users its throughout is 0.43. We consider a dynamic interconnection policy for the marginal users, and we then study the overall system performance in the presence of limit Poisson user populations. Specifically, we study the stability regions of the system and the per packet expected delays. Our interconnection policy accelerates the marginal users, presenting them with a significant delay advantage over the local users. This is desirable when the marginal users transmit high priority data, for example. (rrh).
Performance of On-demand Routing Algorithms in Dense, Constrained Networks
Author: Scott Edwin GoeringRouting in Communications Networks
Author: Martha E. SteenstrupPublisher:
ISBN:
Category : Computers
Languages : en
Pages : 424
Book Description
An edited collection of self-contained papers written by leaders in the field of routing, this book supplies details on the routing techniques currently employed in large operational networks or slated for introduction into such networks. Comprises four major parts covering routing in circuit-switching, packet-switching, high-speed, and mobile networks.
Performance Analysis of Multihop Packet Radio Networks Under Slotted Frequency Hopping Access Scheme
Author: Hahan RahardjoPublisher:
ISBN:
Category : Frequency response (Electrical engineering)
Languages : en
Pages : 152
Book Description
Performance Analysis of Mobile Ad Hoc Networking Routing Protocols
Author: Lee K. ThongPublisher:
ISBN: 9781423521266
Category :
Languages : en
Pages : 153
Book Description
This thesis presents a simulation and performance evaluation analysis of the various routing protocols that have been proposed for the Mobile Ad Hoc Network (MANET) environment using the Network Simulator-2 (NS-2) tool. Many routing protocols have been proposed by the academic communities for possible practical implementation of a MANET in military, governmental and commercial environments. Four (4) such routing protocols were chosen for analysis and evaluation: Ad Hoc On-demand Distance Vector routing (AODV), Dynamic Source Routing (DSR), Destination-Sequenced Distance Vector routing (DSDV) and Optimized Link State Routing (OLSR). NS-2 is developed and maintained by the University of Southern California's Information Sciences Institute (ISI). Leveraging on NS-2 s simulation capabilities, the key performance indicators of the routing protocols were analyzed such as data network throughput, routing overhead generation, data delivery delay as well as energy efficiency or optimization. The last metric is explored, especially due to its relevance to the mobile environment. Energy is a scare commodity in a mobile ad hoc environment. Any routing software that attempts to minimize energy usage will prolong the livelihood of the devices used in the battlefield. Three important mobility models are considered, namely, Random Waypoint, Manhattan Grid, and Reference Point Group Mobility. The application of these three models will enhance the realism of simulation to actual real life mobility in an urban or military setup scenario. The performance of the routing protocols in varied node density, mobility speed as well as loading conditions have been studied. The results of the simulation will provide invaluable insights to the performance of the selected routing protocols. This can serve as a deciding factor for the U.S. Department of Defense (DoD) in their selection of the most suitable routing protocols tailored to their specific needs.
Author: Jeffrey Carl Dill