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Existing networks deemed as complex system merged with many wireless communication networks. Traditional routing algorithm may not be sufficient to meet such complex data transmission from the source nodes to the sink nodes. Therefore, serious studying and investigation for traffic performance and congestion over complex networks seem to be an urgent challenge. Data propagation over complex networks...
A wireless sensor network (WSN) has its application in various fields such as temperature monitoring, pressure monitoring, health monitoring, defence system etc. In wireless sensor networks, congestion occurs because of the inadequate resources like low processing power of the sensor node. The performance of the WSN is degraded by the congestion as it leads to the wastage of energy, reduction in throughput...
Emerging information-centric networking architectures seek to optimally utilize both bandwidth and storage for efficient content distribution. This highlights the need for joint design of traffic engineering and caching strategies. We present a systematic framework for joint dynamic interest request forwarding and dynamic cache placement and eviction, within the context of the Named Data Networking...
Due to limited transmission range and limited battery constraints of mobile nodes in Mobile Ad Hoc Network (MANET), routing in MANET becomes challenging especially when certain QoS requirements such as high data packet delivery ratio, low end to end delay and low routing overhead are to be satisfied. Even though a number of routing protocols have been proposed aiming to provide better network life...
Delay and capacity (throughput) are two important parameters to route data packets in Mobile Ad Hoc Networks (MANETs). In this paper, a new connectionless routing algorithm has been proposed to overcome the performance limit. The proposed algorithm is an extension of dynamic virtual route (DVR) algorithm. Mobility degree of nodes' neighborhood is used to calculate two mobility metrics. Mobility metrics...
Mobile Adhoc Network (MANET) is consist of group of mobile nodes communicating in a multi-hop way with no fixed infrastructure. To search such a multi-hop route to another nodes, each MANET node widely use HELLO packet. Flooding is important and most fundamental routing operation in MANET. Route discovery, route maintenance, and topology update packets processes massive rely on flooding for spreading...
Data centers are used to host computation-intensive distributed applications. Since all the applications are distributed in nature, their performance is significantly affected by the communication network. These applications generally create two kinds of flows: large data flows that require high throughput and small control flows that require low delay. These two contradictory requirements are not...
In this paper, a dynamic Sub-channel Assignment Algorithm (DSA) based on orthogonal frequency division multiple access (OFDMA) technology operating in time division duplexing (TDD) and a new routing protocol are proposed. The proposed dynamic Sub-channel Assignment Algorithm solves several drawbacks of existing radio resource allocation techniques in OFDM system used in ad-hoc and multi-hop networks,...
MAC protocol is an important topic in Wireless Sensor Network, which plays a decisive role in network performance. The current MAC protocol has many problems such as highly dependent on time synchronization, low throughputs or data delay. With multi-channel allocation strategy, the paper put forward a dynamic route allocation algorithm, which reduced data delay and increased the throughputs. The simulation...
Several routing protocols have been proposed to take advantage of the dynamic metrics on links such as link delays, queueing lengths, and available link bandwidths.Wardrop routing, QOS routing are few such example routing protocols. Even when these protocols can be shown to offer convergence properties without oscillations, the protocols have not been widely adopted for a number of reasons. The expected...
Efficient utilization of Multi Channel - Multi Radio (MC-MR) Wireless Mesh Networks (WMNs) can be achieved only by intelligent Channel Assignment (CA) and Link Scheduling (LS). Due to the dynamic nature of traffic demand in WMNs, the CA has to be reconfigured whenever traffic demand changes, in order to achieve maximum throughput in the network. The reconfiguration of CA requires channel switching...
Reinforcement - Learning methods are widely used in routing problems. These methods interact with the network changes, so are called Adaptive routing methods. Q - Learning algorithms has some quantities which are labeled Q, and are known as headers in routing methods which apply this algorithm. As a result, if we add forward exploration to backward One, their header will be increased. We tried in...
This paper presents a new adaptive and dynamic routing algorithm called AAODV for mobile ad hoc networks inspired by Ant Colony Optimization algorithms. This algorithm is proposed by maintaining the nature of the Ad hoc On-demand Distance Vector (AODV) routing through the use of Ant Colony Optimization. AAODV maintains the on-demand nature of AODV but works in an adaptive manner. It does not send...
Mesh networks are characterized by the use of multiple channels and multiple interfaces to improve the system throughput. A multi-interface multi-channel wireless mesh network consists of a number of stationary or minimally mobile wireless routers, forming a multi-hop Internet backbone. Previous research has revealed that single channel IEEE 802.11 MAC protocols are not suitable for multihop network...
A well-known traffic engineering technology in MPLS network is the constraint-based routed label distribution protocol (CR-LDP). In case of conflict, CR-LDP coordinates LSPs that causes conflict, which would result in other conflicts and may cause chain of rerouting. Multi agent based path rerouting method avoids this chain of rerouting. In case of conflict MPRM co-ordinates all LSPs not only the...
The congestion problem in wireless sensor networks (WSNs) is quite different from that in traditional networks. Most current congestion control algorithms try to alleviate the congestion by reducing the rate at which the source nodes inject packets into the network. However, this traffic control scheme always decreases the throughput so as to violate fidelity level required by the application. In...
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