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Development of low-carbon economy and low-carbon logistics is an important part of China's logistics in the long-term development plan. On the basis of the city logistics distribution which is an important part of the logistics system, this paper studies the optimization of distribution network in the city from the perspective of low carbon economy and researches on the two-echelon location-routing...
Although IEEE 802.11p technology is standardized for road safety and efficiency applications, the channel congestion problem is its key weakness necessitating distributed congestion control (DCC) algorithms on different layers of the communication stack. In this paper, we propose DCC-enabled Contention based Forwarding scheme targeting multi-hop dissemination of Decentralised Event Notification Messages...
The penetration of electric vehicles (EVs) has attracted growing research interests in its impact on both power and traffic networks. With the expansion of EVs' range as well as the development of fast charging technology and related infrastructure, large-scale EVs are involved in intercity transportation systems and power transmission systems. We propose a traffic-power integrated network model and...
The occurrence of multiple holes in wireless sensor networks poses many challenges in designing routing protocols. The traditional scheme is forwarding packets along the hole perimeters. However, this scheme leads to two serious problems: data concentration around the hole boundaries and routing path enlargement Recently, several approaches have been proposed to address these two problems, wherein...
A simple network model with torus topology and the virtual cut-through routing have been considered in order to find out and analyze certain relationships that can be used as a starting point for a deeper theoretical analysis and further research. An expression for the saturation point (message generation rate at which network saturates) and approximate expressions for the latency as a function of...
Managing a one-way vehicle sharing system means periodically moving free access vehicles from excess to deficit stations in order to avoid local shortages. We perform a lower bound analysis for the static version of the resulting operational decision problem, and derive from this analysis two heuristic algorithms whose main feature is to be vehicle oriented, which means that they focus on the way...
In this paper, we derive the average and the distribution of message delivery delays in a geographic DTN routing with multiple mobile agents, whose mobility patterns are given by random walks on a graph and message routing algorithm is FIFO (First-In First-Out) algorithm. A geographic DTN routing aims at realization of message delivery among multiple (generally, geographically-dispersed) geographic...
With the recent emergence of energy-harvesting technologies in wireless devices, new challenges have to be addressed by Machine-to-Machine (M2M) communication protocols. The Neutral Operation problem is a relevant problem that seeks to maintain the energy reserve of a node in a level that minimizes energy depletion and maximizes the usage of the harvested-energy. However, neutral operation in a multihop...
Efficient routing is one of the key challenges for next generation vehicular networks for providing fast and reliable communication in a smart city context. Various routing protocols have been proposed for determining optimal routing paths in highly dynamic topologies. However, it is the dilemma of those kinds of networks that good paths are used intensively, resulting in congestion and path quality...
Benefit from the caching hits on the routers along the request routing path, in-network caching plays an important role in diminishing the distance between the consumers and their desired contents. A content caching model is proposed to intuitively analyze the small world characteristics of in-network caching in information centric networks. A directed long edge from a caching node to the provider...
This paper studies how Connected Vehicle (CV) routing can be leveraged to tame the propagation of congestion after the onset of an incident. To do so, the study focuses on an idealized one-way grid network with a homogenous demand pattern. Congestion propagation dynamics is first modeled analytically and simulated in Aimsun considering a scenario with non-adaptive agents. The results are then compared...
In this paper, for Heterogeneous networks (HetNet), we propose a resource allocation with optimization problems based on dual connectivity and traffic load on backhaul links. In the proposed method, two optimization problems are constructed; one is for determining the allocation of a base station and frequency slots to each user, and the other is for determining routes for traffic in backhaul. We...
The issue of traffic congestion on single complex networks has been extensively studied in the past decade. Recently, interconnected network models have been developed to model the interactions between real-world systems. In interconnected networks, the coupling preference, i.e., the way to add coupling links, has great impact on the overall traffic performance. In this paper, we employ a simulated...
In today's scenario, energy efficiency has become one of the most crucial issues for Data Center Networks. This paper analyzes the energy saving capability of a Data Center Network (DCN) using Segment Routing (SR) based model within the SDN architecture. Apart from saving energy by turning off links, our work efficiently manages the traffic within the available links by using per-packet based load...
Network Functions Virtualization (NFV) aims to support service providers to deploy various services in a more agile and cost-effective way. However, the softwarization and cloudification of network functions can result in severe congestion and low network performance. In this paper, we propose a solution to address this issue. We analyze and solve the online load balancing problem using multipath...
Parallel continuum robots consist of a parallel arrangement of flexible legs and are dexterous, compliant, and easily miniaturized for minimally invasive surgery. By design, parallel continuum robots exhibit large, nonlinear deformations in their legs to achieve multi-DOF end effector articulation, but excess leg bowing can limit their reachable workspace, especially for long slender designs. In this...
Optimizing the energy consumption and achieving the network wide load balance for longevity operations of the network are prime issues in the mobile ad-hoc networks. we present a new approach to optimize the energy consumption and achieved the network wide load balance among nodes using non-demonian sorting generic algorithms-II. The routing constraints for energy consumption and load balancing and...
In this paper, we propose a scalable routing and admission control model for Software Defined Networks (SDN). We use pre-established multi-path (PMP) model to increase routing scalability and reduce admission control time.
In this paper the improvement of the flow-based load balancing model for multipath routing in telecommunications networks with nonuniform topology were proposed through transition to complex optimality criterion of the solutions obtained. The proposed criterion is of the linear-quadratic character, which allowed a more detailed account of the each network link utilization separately and substantiated...
In providing new telecommunication services, the requisition for quality of network is more and more popular and sophisticated with high bandwidth, small value of delay time or packet loss etc. To assure the quality of network, the localized routing schemes have recently been researched as a promising alternative to the currently deployed global QoS routing schemes. Different from the traditional...
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