Abstract
Ad hoc networks are infrastructureless and self-organizing networks that consist of static/mobile nodes with limited bandwidth, computing ability and energy. These networks are deployed for civilian/military applications. Having an efficient/reliable routing protocol for communication between the nodes can be critical. A current research avenue involves exploiting Multi-Beam directional Antennas (MBA) to significantly reduce the end-to-end delay in multi-hop ad hoc networks that service multiple traffic flows. To tackle such an issue at the Network level, there is a need for a suitable MAC protocol underneath. In this paper we propose MBA-DbMAC, a MAC protocol for MBAs. MBA-DbMAC is a generic MAC protocol that has the basic functionalities of a MAC protocol and renders possible the basic operation of MBA-equipped nodes in static/mobile ad hoc networks. We adopt a two-tier processing approach whereby the MAC layer is split into two artificial sub-layers: a controller sub-layer (materialized by one node-wide parent process) and a sector sub-layer (materialized by N child processes, 1 child process for each of the N sectors). Other novel aspects of this protocol are the decoupled broadcasting and the time window policy that we adopt to avoid Critical Chain Transmission/Reception. We use Opnet for the implementation/simulations. It is shown that MBA-DbMAC perfectly performs key functions such as unicasting, broadcasting, and concurrent packet transmission/reception.
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Notes
- 1.
Another type of MANETs.
- 2.
For fairness in comparison.
- 3.
Each of the 6 senders sends a little over 5 pkts/sec, more like a little under 6 pkts/sec, therefore the total received at the common receiver is greater than 30 packets, but still less than 36 packets (as it would be if the senders’ rate were exactly 6 pkts/sec).
- 4.
12 nodes = 6 peripheral nodes + 1 central node. However, the central node acts as 6 sources (each of its 6 sectors sends traffic to a neighbor) of traffic.
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Medjo Me Biomo, JD., Kunz, T., St-Hilaire, M. (2019). MBA-DbMAC: A Random-Access MAC Protocol for MBAs. In: Zheng, J., Li, C., Chong, P., Meng, W., Yan, F. (eds) Ad Hoc Networks. ADHOCNETS 2019. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 306. Springer, Cham. https://doi.org/10.1007/978-3-030-37262-0_6
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