A simplified node selection algorithm for multicast resource reservation in TDMA-based narrowband mobile ad-hoc networks

The probability of packet collisions, particularly in multicast communications, can be minimised by utilising 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 algorithm used in a new NATO draft 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 by at least 50 percent both the signalling overhead for reservation and the time until the algorithm achieves correct operation (equilibrium) compared to the NATO reference system. In addition, due to the low complexity, the algorithm may be favourable especially for devices where battery capacity is critical.