Probability and statistics with reliability, queuing and computer science applications
Probability and statistics with reliability, queuing and computer science applications
MSWiM '02 Proceedings of the 5th ACM international workshop on Modeling analysis and simulation of wireless and mobile systems
Link Expiration Times in Mobile Ad Hoc Networks
LCN '02 Proceedings of the 27th Annual IEEE Conference on Local Computer Networks
Ad hoc networks connection availability modeling
PE-WASUN '04 Proceedings of the 1st ACM international workshop on Performance evaluation of wireless ad hoc, sensor, and ubiquitous networks
Basic Concepts and Taxonomy of Dependable and Secure Computing
IEEE Transactions on Dependable and Secure Computing
On Survivability of IEEE 802.11 WLAN
SUTC '06 Proceedings of the IEEE International Conference on Sensor Networks, Ubiquitous, and Trustworthy Computing -Vol 1 (SUTC'06) - Volume 01
Transient behavior of ATM networks under overloads
INFOCOM'96 Proceedings of the Fifteenth annual joint conference of the IEEE computer and communications societies conference on The conference on computer communications - Volume 3
A transient reliability model of RTP video streaming over WLAN
Proceedings of the 7th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
A path connection availability model for MANETs with random waypoint mobility
EPEW'12 Proceedings of the 9th European conference on Computer Performance Engineering
A path connection availability model for MANETs with random waypoint mobility
EPEW'12 Proceedings of the 9th European conference on Computer Performance Engineering
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Network survivability performance provides an assessment of how well a network supports its functionalities in adverse conditions. This paper studies a wireless network survivability scenario, in which ad hoc routing failures occur due to node mobility, and it enhances and validates previously published results in the following manner: a) it analyses ad hoc connection availability with the use of a Markovian model, b) it amends a previously published evaluation of mobile ad hoc router "birth" and "death" rates, c) it validates theoretical results with simulations, and d) it uses a transient model to evaluate the impact of connection availability to higher application layers. The overall survivability model combines a steady-state analysis of the Markovian model and a transient analysis of packets queuing for access to the wireless medium. The main assumption for the Markovian model is that changes in the ad hoc routing status follow an exponential distribution with state transitory rates analogous to the number of available routers. These rates also depend on the network geometry and the node mobility model. Given a "random walk" mobility model, it is shown that the connection availability is independent of the node velocities. This is statistically verified by simulations reinforcing the validity of the theoretical Markovian assumption. The impact of link failures to the survivability of the system is studied by emulating the layers between the data traffic source and the wireless MAC protocol with a buffer and, thereafter, by evaluating the amount and duration of transitory buffer overflows. The presented survivability model could serve as groundwork for further research in ad hoc wireless networks, including ad hoc network performance analysis and QoS optimisation.