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This paper proposes a new load balancing mechanism, called PPLR (prediction packet loss rate), which is based on time series prediction. Load balancing is needed in many fields; however, current approaches have problems such as lacking of preparing for sudden spikes. In this paper, we describe how PPLR dynamically predicts loss levels over all available network paths and adjust the allocation proportion...
Today's best-effort Internet with "one fits all" principle comes to an impasse. Addressed to different QoS requirements of today's network services, we propose a QoS oriented Network Architecture that bases on network virtualization. It provides multiple virtual networks deploying on the same substrate, each is designed with a special designing goal and is running a customized protocol....
In this paper, we argue that real-time multimedia streaming service can be deployed over multiple overlapped virtual networks in future Internet. Rather than carrying multimedia packets relying on a single network alone, our method provides network resources redundancy for reliability, avoiding service interrupted due to errors on some particular networks. In addition, it can balance traffic load...
Delivery of real time streaming applications, such as voice over IP (VoIP), in packet switched networks is based on dividing the stream into packets and transferring each of the packets on an individual basis to the destination. To study the effect of packet dispersion on the quality of VoIP applications, we focus on the effect of the packet loss rate on the applications, and present a model in which...
We proposed a new load balancing mechanism, called PPLR (predictive packet loss rate), by which flow can be divided into packets and each of the packets be transferred on an individual basis to the destination through multipath. Load balancing is needed in many fields; however, current approaches have problems such as lacking of preparing for sudden spikes. In this paper, we describe how PPLR dynamically...
In this paper, we present a framework to facilitate reputation-based service discovery, which has three key features. First, we use a peer-to peer overlay network as the decentralized service repository system for improved efficiency. Second, we propose an adaptive QoS-aware service discovery approach. Then, we present a service-oriented distributed reputation assessment algorithm based on user??s...
Network virtualization provides the feasibility of running multiple architectures on a shared physical infrastructure. Within a virtual network, customized routing protocol can be implemented and deployed in the programmable router. This paper presents the design and evaluation of a service prototype over a virtual network, which provides bandwidth guaranteed multi-path routing with a bandwidth allocation...
The rapid development of next generation network (NGN), communication technology and programming router in the last few years have given rise to a strong research interest in concurrent multipath (CMP) technology. Based on the analysis of flow relation and forward granularity, a novel network layer CMP forward algorithm, CCRF (crosslayer CMP random forward), is proposed. CCRF can classify different...
The rapid developments of communication and computer hardware technology in the last few years have given rise to a strong research interest in Concurrent Multi-Path (CMP) technology. Based on the comparison with conventional single path forward and random CMP forward, a novel Single-hop Delay Probe (SDP) algorithm for CMP forward in multi-homed host is proposed. NS2 simulations prove that SDP algorithm...
Wireless sensor networks routing protocols always neglect security problem at the designing step, while plenty of solutions of this problem exist, one of which is using key management. Researchers have proposed many key management schemes, but most of them were designed for flat wireless sensor networks, which is not fit for cluster-based wireless sensor networks (e.g. LEACH). In this paper, we investigate...
Grid infrastructures have been used to solve large scale problems in science, engineering, and commerce. The management and composition of resources and services for scheduling applications, however, becomes a complex undertaking. Predicting the runtime of a task, an important component of the resource management, plays an important role in the task scheduling and the resource using in computational...
Grid Infrastructures have been used to solve large scale problems in science, engineering, and commerce. The management and composition of resources and services for scheduling applications, however, becomes a complex undertaking. Predicting the runtime of a task, an important component of the resource management, plays an important role in the task scheduling and the resource using in computational...
We present the design of session initiation protocol (SIP) conference based on application layer multicast. Based on the character of SIP conference, we offered a new algorithm to create an application layer multicast tree. In this application layer multicast tree, the two key factors of both bandwidth and delay in streaming media are taken into consideration. The simulation and the experiments show...
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