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Optimal routing in wireless mesh networks is a challenging problem considering inter- and intra-flow interference. To solve the problem, first, we define a new routing metric, expected path bandwidth (EPBW), where the varying link rate (due to wireless channel quality) and the dynamic link load (considering the inter- and intra-flow interference) have been considered to estimate EPBW accurately. Second,...
For provisioning large-scale online applications such as web search, social networks and advertisement systems, data centers face extreme challenges in providing low latency for short flows (that result from end-user actions) and high throughput for background flows (that are needed to maintain data consistency and structure across massively distributed systems). We propose L2DCT, a practical data...
Routing protocol is taking a vital role in the modern internet era. A routing protocol determines how the routers communicate with each other to forward the packets by taking the optimal path to travel from a source node to a destination node. In this paper we have explored two eminent protocols namely, Enhanced Interior Gateway Routing Protocol (EIGRP) and Open Shortest Path First (OSPF) protocols...
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...
With the wide use of multimedia applications, people improve the demand of high speed traffics increasingly. However, when the network is congested, single path route can not satisfy the end-to-end bandwidth requirement, thus limited bandwidth resources can not be used efficiently. In this paper, we therefore propose a bandwidth-guaranteed multi-path routing, which can find multiple node-disjoint...
A MANET is a collection of mobile nodes communicating and cooperating with each other to route a packet from the source to their destinations. A MANET is proposed to support dynamic routing strategies in absence of wired infrastructure and centralized administration. In such networks, limited power in mobile nodes is a big challenge. So energy efficient techniques should be implemented with existing...
A major issue in MANET is degradation in TCP throughput due to node mobility, interference, unreliable medium and route failures. Additionally, TCP suffers because it is unable to distinguish segment loss either due to route failures or due to congestion. Sometimes, TCP misinterprets wireless error as congestion. Another major issue of MANET relates to routing. Aiming at performance enhancement in...
In this paper a new proposal to perform QoS routing in Mobile Ad-hoc NETwork (MANET) is presented and it relies on paradigms of Quality of service Optimized Link State Routing (QOLSR) protocol. The proposed technique is based on the definition of two different priority levels for traffic flows: high priority level and best effort level. While more classes can be defined, the approach is of interest...
Due to increased adoption of digital consumer services, Mobile Ad-hoc Networks (MANETs) are gaining importance in real-life business applications. MANETs are wireless networks consisting of a set of mobile nodes and enables multi-hop peer-to-peer routing without any requirement of predefined infrastructure for its deployment. There are several works in literature for improving the Quality of Service...
This paper proposes a new geographical ant routing protocol for mobile ad hoc network with limited number of interfaces that utilized dynamically to improve network performance. This protocol inspired by Ant colony algorithms which reacts dynamically and cognitively towards networks environments changes. Channel selection dynamically allocated as a react to link break or a channel have been used by...
This paper addresses the adaptation of the RSVP-AGG (RSVP aggregate) protocol for the tactical edge. Deploying the standard RSVP-AGG protocol over the HAIPE encrypted core network has no benefits because the encrypted core network router cannot utilize the encrypted RSVP packets. This paper investigates the use of RSVP-AGG where the tactical edge aggregates all the plain text subnet RSVP tunnels over...
MANET (short for Mobile Ad-Hoc Network) consists of a set of mobile network nodes, network configuration changes very fast. Each node will act as a router to maintain network operation. There is no central node for controlling entire network. So routing in MANET is very important.
Network requirements are evolved from data communications between two hosts to accessing a large amount of information through networks. The current Internet uses address-centric network communication model, which is suitable for the communications between hosts but not efficient in the communications between hosts and networks. Given this fact, Information-Centric networking (ICN) becomes the hot...
The Wireless Mesh Network (WMN) is a highly capable technology that can offer low-cost and easy-deployable network connectivity to both small-size community networks and large-scale metropolitan networks. As a key emerging technology to provide the next generation broadband networking, WMN combines the advantages of both mobile ad hoc network (MANET) and traditional fixed network, attracting significant...
This article mainly describes the Ad hoc on-demand QoS routing based on Bandwidth Prediction (AQBP). Differing from the existing QoS routing protocols, AQBP takes node future bandwidth into consideration when selects route. The future bandwidth requirement of each node is predicted by its history. The performances of throughput, transmission ratio and delay among AODV, AQOR and AQBP have been simulated...
Network Virtualization is currently considered as one of the most important approaches to the development of future Internet architecture. In addition to paperwork, most related works also need to be evaluated and verified through testbed. Some large- scale research network test platforms are designed. But they are not suitable for researchers to carry out small-scale network virtualization experiments,...
Since conventional routing algorithm is easily leading to the problem that some segments of a network are quite congested while other segments along alternative routes are under utilized, this thesis proposed a new load balance algorithm called load balance algorithm using deviation path. Multiple Protocol Label Switching (MPLS) uses its explicit routing technology to implement traffic engineering...
Dealing with the problem of virtual network (VN) mapping in the environment of network virtualization, this paper proposes a decomposing mapping algorithm that generally focuses on the remaining network balance. The algorithm first decomposes a request of VN mapping into meta-requests, each of which is consisted of a pair of nodes and a virtual link. The second step is to search out a path set which...
The growth of the Internet has increased the need for scalable congestion control mechanisms in high speed networks. In this context, we propose a rate-based explicit congestion control mechanism with which the sources are provided with the rate at which they can transmit. These rates are computed with a distributed max-min fair algorithm, SLBN. The novelty of SLBN is that it combines two interesting...
Scalable multicast protocol design based on the Bloom filter has received much attention from the research community recently. With the Bloom filter-based design, routing information is carried by the multicast data packet in the format of a Bloom filter. As the network node has no need maintaining a forwarding state for each group it is supporting, the Bloom filter-based multicast protocols are more...
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