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Satellite networks can provide worldwide-coverage wireless data gram services, but cause great challenges for how to efficiently route data gram. The Low Earth Orbit (LEO) satellite is becoming an essential part of the Next-Generation internet with short round-trip delay and low power consumption. In this paper, we propose a routing algorithm for LEO satellite constellation networks with high performance...
As Wireless applications become more popular in everyday life, the importance of flexible communication protocols rises higher. The limited resources and time-critical nature of wireless sensor networks (WSNs) must be addressed by the network layer, as one of the most mandatory communication components to support routing capabilities in multi-hop mobile sensor nodes' topologies. WSN application particularities...
Under the network environment, the Network topologies will change which leads to the changes of the routes for the moving characteristic of the nodes. We analyze the effects on TCP RQB caused by the changes of the routes in AD hoc and present the modified methods for TCP RQB, which is called TCP RQB-R, on the basis of the theory above. By identifying dynamically the changes of routes in the method...
We present an approach for developing routing algorithms where we first attempt to understand the network characteristics (i.e. network connectivity, mobility and rate of change of the topology) and expected traffic patterns of a specified mobile scenario before proceeding to design an algorithm that optimizing routing performance for the common cases. We apply our approach to Triton, a proposed 802...
When Disruption Tolerant Network (DTN) is used in commercial environments, incentive mechanism should be employed to encourage cooperation among selfish mobile users. Key challenges in the design of an incentive scheme for DTN are that disconnections among nodes are the norm rather than exception and network topology is time varying. Thus, it is difficult to detect selfish actions that can be launched...
Swarm intelligence (SI) is emerged with collective intelligence of groups of simple agents. SI offers an alternative way of designing intelligent system, in which autonomy, emergence and distributed functioning replaces control, preprogramming and centralization systems. This approach emphasizes on distributed, flexibility, robustness and direct or indirect communication among relatively simple agents...
First we analyze the shortcomings of existing routing protocols in intermittently connected mobile networks (ICMN) such as high delivery delay, low success rate and cannot adaptive to the different network environment. With this in mind, we propose a new routing scheme called adaptive multiple copy multiple hop algorithm (AMM). By collecting the simple information about the status of the network,...
Low efficiency occurs just because physical topology isn't considered when Mobile Peer-to-Peer (MP2P) constructs overlay network; this paper will propose a novel vector location-based algorithm based on Distributed Hash Tables (DHT) algorithm. Using pole coordinates to divide physical network into different zones, constructing new routing protocol based on the location vector information; thus, nodes...
The goal is to utilize position information to provide more reliable as well as efficient routing for certain applications. Thus extensions to existing position based routing algorithm have been described to work more efficiently even in cases where they are not working at present. In this paper an algorithm is proposed, which removes some of the drawbacks of the existing GPSR (Greedy perimeter stateless...
Wireless mesh network (WMN) has become a popular access network architecture. But because of its multi-hop nature, co-channel interference and contention, the attainable capacity of a wireless node in a WMN is significantly less than the radio capacity. We propose a overlay architecture for a WMN, where a wireless-ring (WRing) is deployed over the regular mesh for carrying wireless mesh traffic only...
A principal factor in sensor network design is energy efficiency. In this work, we propose to extend the lifetime of sensor networks using appropriate choice of sensor node distribution. The key idea of our scheme is to deploy more nodes in areas of extensive energy usage. Using this scheme of sensor node distribution, we use probabilistic angular routing to route data packets from the sensor nodes...
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