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This paper presents a new data transmission protocol in Delay Tolerant Mobile Wireless Sensor Networks, which divides the data transmission process into two phases: data reception phase and data forwarding phase, mainly fulfilling through analyzing the state of mobile nodes and using Hand up mechanism. Simulation result shows that, through the implementation of two phases, we can obtain a higher message...
Contention-based forwarding (CBF) has proven to achieve a good performance in routing in mobile and vehicular ad hoc networks. CBF's main advantage is that it does not require the knowledge about the local neighborhood, eliminating, therefore, the periodic beacon exchange that causes degradation in the network performance, especially when the density of the neighborhood is high. On the other hand,...
In wireless mesh networks, scheduling is the bottleneck of the cross-layer design approach. Thus, it is surprising that CSMA is utility-optimal if it is used traffic-adaptive. However, the price to pay is short-term fairness and thus end-to-end delay. In this paper, we propose a step size adaptation algorithm that combines the advantages of small and large step sizes in a way that the convergence...
Underwater wireless sensor networks are new arising research hotspot. The paper first analyses the related vector-based forwarding protocols for underwater wireless sensor networks, and puts forward a novel data forwarding strategy for the candidate nodes, to reduce the delay in the forwarding nodes and improve the successful rate, so as to satisfy the requirements in the low delay environment. The...
It has been widely recognized that the multipath routing can be fundamentally more efficient than the traditional approach of routing along single path. A self-adaptive traffic splitting algorithm, called Dynamic Weighted Round-Robin (DWRR), has been developed to distribute traffic fairly in term of the weight so as to obtain good performance of network load balance. In addition, DWRR can get lower...
This paper considers the problem of routing packets across a multi-hop wireless network while ensuring throughput optimality. One of the main challenges in the design of throughput optimal routing policies is identifying appropriate and universal Lyapunov functions with negative expected drift. The few well-known throughput optimal routing policies in the literature are constructed using simple quadratic...
Wireless mesh networks (WMNs) have recently gained a lot of popularity due to their rapid deployment and instant communication capabilities. However, as a key technology for next-generation wireless networking, WMNs lack suitable routing metrics and protocol for new features. Currently, AODV is the routing protocol used in WMNs. This paper proposes an ants-in-mesh (AIM) routing protocol for wireless...
Geographic routing protocols for wireless sensor networks (WSNs) have received more attentions in recent years and greedy forwarding algorithm is a main component in geographic routing. In this paper, we investigate the forwarding criterions in greedy forwarding algorithms and present a greedy routing algorithm using a new criterion combining the characteristics of both distance-based criterion and...
An algorithm for performance-driven routing is presented. It is based on a new second-order propagation delay model for RLC interconnection trees, which is more suitable than the Elmore time-constant model. Experimental results show that by using the new delay model instead of the first-order model, the performance-driven routing algorithm can generate routing with significantly smaller signal delays...
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