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A distributed dynamic slot assignment scheme for multi-channel Time Division Multiplex Access (TDMA) based wireless Ad Hoc networks is presented in this paper. As exclusive control channels are introduced, hidden terminals are enable to receive packet whereas transmit packets are avoided. Similarly, exposed terminals are enable to transmit packets while receive packets are avoid. Thus high efficient...
Media Access Control (MAC) plays an important role in coordinating channel access among the nodes. This is especially important for Mobile Ad-hoc Networks (MANETs), where all mobile nodes use the same frequency spectrum for transmission. In this paper, a hybrid MAC protocol ADAPT-CND (ADAPT Considering Node Degree) is proposed, which is based on ADAPT. In ADAPT, back-off mechanism similar to Binary...
Wireless sensor networks (WSNs) is one of the hottest research fields. In many protocols, the routing path which is get might be much longer than the optimal and some other protocols mightn't capture battery status. We proposed the battery-aware modified depth-first search protocol to reduce the hops of the routing path and decrease discharging loss to lighten the consumption of the whole network...
Time slot synchronization is very important for a TDMA- based ad hoc network. An existing method to achieve time slot synchronization in ad hoc network is the decentralized slot synchronization algorithm. However, interference nodes in the network may lead to un-convergence of this algorithm. In this paper, a method for eliminating the interference in decentralized slot synchronization is presented...
Time-slot synchronization is very important for a TDMA-based Ad Hoc Network. In this paper, we propose a decentralized algorithm to synchronize the local time slot reference. The differences between the time slots of neighboring nodes with consideration of signal propagation delay are used to compute the slot adjustment. The methods on how to choose parameters are also discussed. Simulation experiments...
A time slot synchronous method to support real time oriented TDMA for multi-hop ad hoc wireless network is described. In this algorithm, each node repetitively corrects its local time slot reference by an adjustment, which is computed according to its time slot difference between those of its neighbor nodes. This algorithm is simultaneously co-computed by each node. Simulations show that fast convergence...
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