Experimental Evaluation on Impacts of Timers on Diverse Movement Patterns for Mobile Ad HOC Networks
Daniel Godfrey Majengo1, Ki-Il Kim2, Bong Soo Roh3, Jae-Hyun Ham4
1Daniel Godfrey Majengo, Department of Computer Science and Engineering, Chungnam National University, Daehak-Ro Yuseong-Gu, Daejeon, Korea, East Asia.
2Ki-Il Kim, Corresponding author, Department of Computer Science and Engineering, Chungnam National University, Daehak-Ro Yuseong-Gu Daejeon,, Korea, East Asia.
3Bong Soo Roh, The 2nd R&D Institute, Agency for Defense Development, Daejeon, Korea, East Asia.
4Jae-Hyun Ham, The 2nd R&D Institute, Agency for Defense Development, Daejeon, Korea, East Asia.
Manuscript received on 20 June 2019 | Revised Manuscript received on 27 June 2019 | Manuscript Published on 22 June 2019 | PP: 385-388 | Volume-8 Issue-8S2 June 2019 | Retrieval Number: H10710688S219/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Due to mobility nature of nodes in mobile ad hoc networks, topology changes are observed frequently, that it affects the performance metric of the routing protocol. Therefore, designing a mechanism for fast reactivity to these network changes could improve the performance of mobile networks. Methods/Statistical analysis: Several factors like, local link connectivity, local link failure and the rate at which topology changes are highly impacted by the mobility behavior of the communicating mobile nodes. We present a comparative analysis of tuning refresh timers of a proactive Optimized Link State Routing protocol (OLSR) when mobile are moving under at different mobility patterns. Findings: Routing protocol in mobile ad hoc network is highly impacted by the mobility behavior of the communicating nodes. In addition to that, the impact of setting the rate at which the refresh messages are being broadcasted in a network varies depending on the mobility behavior of communicating mobile nodes. We observed the impact of tuning HELLO intervals on the performance of optimized link state routing protocol on mobile nodes moving under different mobility models. From our observation, we learn that the settings of HELLO interval on a network of mobile nodes have different impacts depending on the mobility behavior of mobile nodes and node density. Improvements/Applications: The dynamic timer for refreshment of topology information can improve the performance of routing protocol. In addition, application-specific mobility model is required for routing protocol.
Keywords: Mobile ad hoc Networks, Mobility Model, Refresh Timer, Performance Evaluation, Dynamic Timer.
Scope of the Article: Computer Science and Its Applications