A Simplified Node Selection Algorithm for Multicast Resource Reservation in TDMA-based Narrowband Mobile Ad-hoc Networks
Sebastian Helmle, Mathias Dehm, Michael Kuhn, Dominik Lieckfeldt and Dirk Pesch
Multicast communication in both distributed and self-organising mobile ad-hoc networks (MANETs) is a major challenge with the issues of collision avoidance due to interference from hidden nodes being the most challenging aspect. Hence, the objective is to optimise the trade-off between minimising the probability of packet collisions and the required signalling overhead to inform hidden nodes about resource reservation. One approach to minimise packet collisions is to use auxiliary nodes that forward reservation information to hidden nodes. In this paper, a simplified algorithm for auxiliary node selection based on geographical information is proposed and compared with an existing auxiliary node selection algorithm used in a NATO standard for narrowband MANETs. Since the proposed approach requires only information about single-hop neighbours (which is expected to be both more accurate and more frequently available), the algorithm may be beneficial in situations of high mobility and for initial network entry where only limited neighbour information is available. Utilising single-hop topology information reduces both the signalling overhead for reservation and the time until correct operation of the algorithm by at least 50 per cent compared to NATO standard. Additionally, due to the low complexity of the algorithm it may be favourable especially for devices where battery capacity is critical. To the best of our knowledge such a solution for reliable multicast communication in mobile ad-hoc networks is not available, yet.
accepted for presentation at Wireless Days 2013, Valencia, Spain, November 2013
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