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We will demonstrate an innovative network topology aware holistic smart backhaul solution — Self-optimizing Wireless Mesh Network (SWMN), supporting a partial mesh wireless backhaul implementation that is not only highly resilient and scalable, but also equipped with advanced SON (Self-Organizing Network) capabilities offering autonomous network configuration and traffic engineering features.
In this study, we aim to design a controller (XCon) which optimizes energy-efficiency in the over-provisioned indoor 4G cellular networks for under-utilized eNodeBs. In this manner, we propose a novel energy efficiency coefficient (EEC) which covers conventional bits=joule energy efficiency metric and additionally contains parameters such as channel utilization and SINR. Moreover, we define an optimization...
The research trends in computer and wireless communication networks are growingly facilitated with the emergence of various Network Simulation tools. Network simulation software enables users to model network behavior demonstrating the packet transmission behavior and interaction amongst the nodes. These models are further used to analyze and predict the behavior of a computer network on various devices...
In recent years there has been a big increase in the number of network-related experiments using software defined networking (SDN) technology. We report on our practical experience over 2 years running network experiments on three classes of testbed facility, each supporting researchers working at a different innovation stage. We run experiments using the commercial Amazon EC2 cloud facility, pre-commercial...
This paper proposes a methodology for resource consolidation towards minimizing the power consumption in a large network, with a substantial resource overprovisioning. The focus is on the operation of the core MPLS networks. The proposed approach is based on a software defined networking (SDN) scheme with a reconfigurable centralized controller, which turns off certain network elements. The methodology...
CGEA (Convergence Gradients Expectation Ant algorithm) is proposed in this paper, which can get the optimal path quickly by precomputing the Convergence grads expectation of improved ant algorithm. QoS metrics of link can be measured by expectation function and the optimal path can be got efficiently by comparing the convergence grads.
Multi-Protocol Label Switching (MPLS), which was introduced by Internet Engineering Task Force (IETF), is widely used in communication networks to provide QoS guaranties to traffic. In this connection-oriented protocol, network failures can cause a serious disruption to critical data traffic which is unacceptable for customers who require highly reliable services. To guarantee high QoS and enhance...
In this paper, we address the OpenFlow virtual network (VN) design problem. Unlike most of the existing approaches that directly performing bandwidth slicing on the physical networks, we take traffic uncertainly and statistical multiplexing into consideration. In our system, a user can specify the desired VN topology and the capacity for each virtual link (VL). The bandwidth descriptor for a VL consists...
In optical networks, faults in links and nodes cause massive loss of data even if for short periods. Therefore, protection techniques have been developed to cope with failures. Among these techniques, p-cycle is very attractive since it provides ring-like speed of restoration in mesh topologies. In recent years, the technology of flexgrid networks has emerged as a solution for dealing with the diversity...
Current high-performance platforms such as Datacenters or High-Performance Computing systems rely on highspeed interconnection networks able to cope with the ever-increasing communication requirements of modern applications. In particular, in high-performance systems that must offer differentiated services to applications which involve traffic prioritization, it is almost mandatory that the interconnection...
Traffic Flow Confidentiality (TFC) aims to prevent analysis of traffic flows. According to the principles of Protected Core Networking (PCN), TFC should be provided as a service in the network and not implemented by the users. Since provisioning of TFC in the entire network might not be practical or economical feasible, solutions are required for forwarding traffic on paths where sufficient TFC is...
Host virtualization allows data centers to live migrate an entire Virtual Machine (VM) to support data center maintenance and workload balancing. Live VM Migration can consume nearly the entire bandwidth which impacts the performance of competing flows in the network. Knowing the cost of VM Migration propels data center admins to intelligently reserve minimum bandwidth required to ensure a network-aware...
With the deepening of wireless sensor network (WSN) applied in various services in smart substation, high data rate and quality of service has become the new research focus. For smart substation equipment condition monitoring, the paper designs clustered smart substation equipment monitoring network based on wireless sensor network. Reference to Zigbee protocol and IEC 61850 relevant regulations,...
This paper focuses on routing algorithm with two quality of service constraints: bandwidth and delay. The former is a concave constraint while the later is additive. The goal of algorithm is to accept as many routing requests as possible. Therefore, the proposed algorithm reactively calculates link weights based on link bandwidths. Then, a heuristic idea is applied to Dijkstra in order to find a path...
This paper introduces a novel distributed topology management scheme for 5G ultra-small cell networks (SCNs). The scheme is designed to switch as many base stations as possible to sleep mode without significantly degrading the Quality of Service (QoS). This is fulfilled through traffic perception by each base station in its dynamically changing monitoring area. Simulation results show that the proposed...
This paper investigates dynamic topology management functionalities in the flexible deployment of a hybrid aerial-terrestrial cognitive cellular network for public safety in unexpected or temporary events. An evolutionary roll out and roll back of the network architecture in the disaster relief scenario is proposed under the assistant of topology management algorithm, in order to manage the number,...
The Low Extra Delay Background Transport (LEDBAT) protocol is a recently standardized protocol that aims to offer a scavenger service (i.e. the goal is to exploit the remaining and unused capacity of a link). LEDBAT is a delay-based protocol mainly defined by two parameters: a target queuing delay and a gain. The RFC 6817 provides guidelines to configure both parameters that strongly impact on the...
The momentum around Software-defined Networking (SDN) is increasing. It has become clear that the network architecture needs to evolve to be able to provide current and next generation networking services, both from a performance and implementation point of view. However, most of the current SDN research has looked to specificities of SDN and few have looked from a full stack perspective. Although...
Now a days as compare to power resources power demand grows and energy cost is also increasing at constant rate. To reduce power consumption in entire network infrastructure lots of research developed. In this approach the solution to save energy is explain. In this approach Energy Saving IP Routing strategy is define. ESIR strategy work with Open Shortest Path First protocol. This strategy is useful...
Nodes in ad hoc networks rely on batteries with limited capacity. As result, this imposes constraints on the network lifetime. In order to maximize the network lifetime, routing protocols should deliver traffic in a way that the energy consumption is minimized. This paper discusses the problem of energy saving in QoS multicast routing of ad hoc wireless networks. Our goal is to find a network topology...
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