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Topology control is a crucial process for an efficient operation of a Wireless Sensor Network (WSN). The usage of WSNs in the Internet of Things (IoT) emerges new research challenges and novel applications. Recent WSNs proposals enhanced with Software Defined Networking (SDN) practices introduce new innovative network control strategies and protocols based on central control logic. This paper introduces...
This work studies centrality metrics as forwarding load predictors, for both unicast and multicast traffic, within dynamic ad hoc network topologies. We present results from a series of emulation experiments based around an emergency response mobile network scenario. From collected temporal topological and traffic data, we calculate a rank correlation measure between predictive centrality metrics...
With the fast development of cloud computing and online business of Internet, the importance of data center is gradually increasing. Conventional Ethernet protocols can hardly meet the scalability and performance requirements of data centers (DCs). The traditional method solves the congestion problem by reducing the network throughput. In this paper, based on software-defined networks (SDNs) technology,...
Current approaches to Information-Centric Networking (ICN) facilitate the publication and retrieval of content in a network through a variety of discovery, caching and forwarding approaches, thus defining an equivalent of the data plane in the current Internet infrastructure. However, in contrast to the current Internet, ICN lacks a definition of the control plane for the management of the operation...
It is a hot topic to make full use of channel resources in the case of limited hardware resources on the Internet. Channel allocation in multi-interface multi-channel nodes can effectively solve the problem. Extending the single-interface single-channel OLSR protocol to multi-interface multi-channel OLSR protocol and distributed channel negotiation on multiinterface multi-channel OLSR protocol can...
The Border Gateway Protocol (BGP) is the current standard protocol for the inter-domain routing system. Although BGP makes easy to manipulate the output traffic by an Autonomous System (AS), it lacks other desired features such as convenient management of incoming traffic to an AS. Thus, we propose a framework to evolve the control plane routing system that is compatible with BGP (smooth transition),...
This work describes a clean-slate inter-domain routing protocol designed to meet the needs of the future mobile Internet. In particular, we describe the edge-aware inter-domain routing (EIR) protocol which provides new abstractions of aggregated-nodes (aNodes) and virtual-links (vLinks) for expressing network topologies and edge network properties necessary to address next-generation mobility related...
Software-Defined Optical Network (SDON) incorporates the technologies of Software-Defined Network (SDN) into the comprehensive solutions of traditional optical network, which greatly improves the weaknesses of the traditional optical network, including inadequate enforcement of control, inefficient utilization of resource and so on. Based on the improved SDON architecture, this paper did lots of research...
A promising approach for dealing with the increasing demand of data traffic is the use of device-to-device (D2D) technologies, in particular when the destination can be reached directly, or though few retransmissions by peer devices. Thus, the cellular network can offload local traffic that is transmitted by an ad hoc network, e.g., a mobile ad hoc network (MANET), or a vehicular ad hoc network (VANET)...
Bit Indexed Explicit Replication (BIER) is a novel multicast forwarding scheme for IP networks that avoids states in replicating routers by encoding the multicast information into a bit string in the packet header. In addition, the BIER-TE variant encodes the multicast tree in the header and allows for network programmability. We propose the use of maximally redundant trees (MRTs) for 1+1 protection...
Named-Data Networking (NDN) is a novel clean-slate architecture for Future Internet. It has been designed to take into account a new use of the Internet and especially accessing content for a large number of users, and it integrates several features such as in-network caching, security or multipath. As NDN relies on content names instead of host address, it cannot rely on traditional Internet routing,...
Middleboxes (Service Functions) have become indispensable part of Enterprise, Mobile and Data Center networks. Network operators rely on middleboxes to enforce network policies and to provide performance optimization, security and other value added services. With the increasing scale of network services and use cases demanding a specific sequence of service functions, the complexity and scale requirements...
OpenStack has been widely acknowledged to be one of the most important open source cloud platforms. In order to perform experimentally driven research in the area of cloud and cloud networking, there is however a big gap, because most researchers do not have access to a large cloud deployment and cannot change networking or compute infrastructure in order to test their algorithms and protocols on...
In Skip Graph, a structured overlay, each node constructs its routing table by choosing connected nodes based on its membership vector. However, membership vectors are determined randomly; therefore, nodes do not always form an ideal topology. This can cause the route length to be long. Therefore, we propose Self-Refining Skip Graph, a structured overlay where each node refines its routing table toward...
It is critical to provide sustained data throughput in edge computing, where several sensor devices generate information that needs to be fused and used for decision making in e.g., disaster incident scenes. To this end, we compare the effectiveness of two protocols, Hybrid Wireless Mesh Protocol (HWMP) and Greedy Perimeter Stateless Routing (GPSR), based upon their ability to stream data in a mesh...
ETRI distributed cloud platform provides customers with optimal computing and storage resources over remotely distributed micro datacenters connected over multi-domain transport networks. It requires dynamic SDN control to utilize transport network resource efficiently. This paper introduces implementation of transport network orchestration to control multi-domain transport networks for the distributed...
Distributed Hash Tables (DHTs) have emerged as the most popular scheme in the P2P network, which have drastically changed the way we share resources and gather information. In order to solve the problem of search flexibility In DHT, an improved lookup and routing protocol based on Content Addressable Networks (CANs) is proposed, which not only preserves CANs' simplicity, but also achieves a resilient...
Software-defined Networking (SDN) is a novel approach to manage enterprise and data center networks easily. Integration of middleboxes, which provides Network Functions (NF)s that are crucial for network security, performance and reliability, raises new challenges, for example, traversing middle-boxes in a given order makes routing more complex. Rerouted traffic flows require that the state of middleboxes...
We propose two types of per-flow entry verification schemes for already-deployed commercial Software Defined Networking (SDN) based networks with network service header (NSH)-disabled OpenFlow systems. Although OpenFlow-based SDN is a promising candidate for easing the delivery and deployment of new and existing services, its packet forwarding mechanism is more complicated than IP routing and Ethernet...
Neighbourhood connection and network topology in modular robotic systems are frequently varied by users. Inter-communication of modular robotic systems is a challenge due to uncertainties of network topology. In this paper, we present a novel distributed communication protocol for modular robotic systems. The protocol is designed to deal with rapid changes of system reconfiguration. We demonstrated...
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