Journal of Network and Computer Applications
Bandwidth-satisfied routing in multi-rate MANETs by cross-layer approach
Wireless Communications & Mobile Computing
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Ad hoc wireless networks have been an increasinglyimportant area of research in the recent past. One issue of great interestin this area is the provision of real-time support. While existingmilitary applications use reservation-based approaches to providereal-time bandwidth guarantees, these schemes are adverselyaffected by node mobility. In this paper, we propose an enhancedreal-time support scheme that uses a novel out-of-band signalingmechanism to predict future mobility patterns and take correctiveaction when needed. We also propose an architecture to supportdifferentiated service classes. This helps mobility affected nodes totake proactive measures so as to offer better real-time services tobandwidth critical applications. Through extensive simulations,we show that the use of the out-of-band signaling leads to betterreal-time support overall, and better response to the more criticalclasses as needed. We also provide a theoretical analysis forestimating the probability of disruption of a real-time call.