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Resource allocation is an important factor in providing different varieties of services in next-generation broadband wireless systems. In this paper, we consider dynamic routing and subchannel allocation for providing quality of service (QoS) in the downlink of orthogonal frequency-division multiple-access (OFDMA) networks enhanced with buffering relays. Specifically, we consider satisfying the QoS...
Though the decades of great success the Internet has experienced, it still confronts with many challenges to achieve QoS of various business types. A consensus has been reached that resource allocation presents a tremendously status in such a network bandwidth poor settings. In this paper, we bring the knapsack problem idea into reconfigurable network architecture (RNA), which is proposed with the...
Virtual Content Aware Networks (VCAN) constructed as overlays over IP network substrate is considered an efficient solution to incrementally introduce content awareness at network level. Planning, mapping on top of multiple domains IP network and optimizing these VCANs is still an open research issue. This paper is focused on intradomain planning and VCAN mapping, with QoS guarantees, thus continuing...
In a resource constrained wireless sensor network (WSN), communication tasks can be expensive in terms of power consumption. Thus, when good communication is required, a mechanism that can maximize the chances of a successful transmission of information via wireless network is very desirable. The Opportunistic Routing (OR) protocol has been proposed as an alternative and efficient method for exploiting...
Take a research in depth on the modeling problem of service path selection based on SON. Firstly, the optimal model is built with the optimal goal of balanced loading and with the functional constraints of users for composed service and multi-QoS constraints. Then the layered method and improved Ant algorithm are adopted to solve this problem. Finally, a simulated emulation is made to the algorithm,...
In the recent years, multipath routing techniques are recognized as an effective approach to improve QoS in Wireless Sensor Networks (WSNs). However, in most of the previously proposed protocols either the effects of inter-path interference are ignored, or establishing low-interference paths is very costly. In this paper, we propose a Low-Interference Energy-efficient Multipath ROuting protocol (LIEMRO)...
Most datacenter networks are based on specialized edge-core topologies, which are costly to build, difficult to maintain and consume too much power. We propose enhancements to layer-two (L2) Ethernet switches to enable multipath L2 routing in scalable datacenters. This replaces an expensive router with commodity switches. Our hash-based routing approach reuses and minimally extends hardware structures...
This paper studies the joint OFDMA resource allocation and QoS routing problem in a hybrid wireless network, which includes an OFDMA based cellular network and an ad-hoc network with many sensor nodes. In such application, each sensor node generates certain amount of data that need to be sent to cellular base station (BS). The cellular nodes act as gateway to forward all the uplink traffic. We formulate...
Efficient resource search in large-scale unstructured peer-to-peer (P2P) systems remains a fundamental challenge. In order to improve search performance, interest-based search is a good way to tackle the challenge. However, the existing interest-based search algorithms pay attention to user interest model and search history, but ignore some influence factors of improving performance. In this paper,...
Wireless Mesh Network (WMN) has been considered as a key emerging technology to construct next generation wireless communication networks. It combines the advantages of both mobile ad-hoc network (MANET) and traditional fixed network, attracting significant industrial and academic attentions. In WMN, the load balancing becomes a hot topic in enhancing the QoS provision as a load balanced WMN exhibits...
New architectures have recently been proposed and deployed to support end-to-end advance reservation of network resources. These architectures rely on the use a centralized scheduler, which may be unpractical in large or administratively heterogeneous networks. In this work, we explore and demonstrate the feasibility of implementing distributed solutions for advance reservation. We introduce a new...
We propose a novel pricing incentive mechanism supporting load balancing and allocating network resource efficiently for QoS-enabled networks. In this paper, we integrate the proposed pricing with QoS routing and present a novel pricing incentive mechanism meeting the QoS requirements of application. This mechanism provides a equitable pricing incentive for applications to according to their service...
This paper discusses the efficient message deletion mechanism, which will be able to apply regardless of applied routing protocol, in DTNs (Delay Tolerant Networks). In order to achieve an acceptable quality of message delivery probability, we will need to allow the multiple message replicas in the system. In this context, the capability and capacity of store-carry-and-forward at the nodes is crucial...
In this paper, we consider hybrid circuit/packet networks. A hybrid circuit/packet network consists of a circuit network co-existing with a packet network; generally the packet network is embedded on top of the circuit network. However, in certain cases such as the DOE energy sciences network (ESnet), the circuit network and the packet network are deployed side-by-side (e.g. they have common end-node...
In this paper we describe the design principles and the preliminary implementation of a situation aware intra-domain routing solution, called Situation Aware Multipath (SAMP) routing algorithm. This offers an effective method to increase throughput and to achieve load balancing by attempting to prevent congestion in computer networks. The path selection is based on statistical cross-layer Quality...
Wireless personal area networks (WPANs) usually have very limited coverage. In this paper, we focus on methods to extend this range through multi-hop communication crossing several inter-connected WPANs called piconets. Multi-hop communication between piconets is possible through the bridge devices. While extending the range of WPANs, bridge devices become the capacity bottlenecks for these connected...
We analyze the performance of six export policies for a multi-domain routing protocol in WDM networks. We show that providing many AS-disjoint paths for survivability and load-balancing does not necessarily guarantee the lowest connection blocking.
This paper presents a dynamic self-organizing design for a server cluster that supports multiple services with different priorities. Our system dynamically allocates jobs to servers in a server cluster, while maintaining certain QoS objectives for each service. A "Local leader" is dynamically set up for each service, and it controls the membership of its service, and thus the cluster size...
Explicit path setup and constraint-based routing make Multi Protocol Label Switching (MPLS) a suitable technology to consider QoS constraints of the user and traffic engineering (TE) objectives of the provider. This work focuses on the problem of selecting bandwidth guaranteed path for MPLS based networks. The selected path should also fulfill the provider's objective of reducing the blocking probability...
After decades of wired communication, the wireless communication has replaced them in the recent past. Due to the large bandwidth of wireless communication, it is used for multimedia applications. The wireless multimedia network has gained tremendous importance in recent years due to its wide applications. It is unreliable because of network parameter constraints such as bandwidth, buffer, delay,...
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