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检索条件"丛书名=Computer Communications and Networks"

共 4934 条记录，以下是231-240 订阅

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Applying Harary Graph Structures to the Overlay Network Kademlia 30

Applying Harary Graph Structures to the Overlay Network Kade...

引用

30th International Conference on computer communications and networks (ICCCN)

作者： Heck, Henner Wacker, Arno Univ Bundeswehr Munchen Privacy & Compliance Munich Germany

ISBN: (纸本)9780738113302

Connectivity is an important property of fully distributed networks. The greater the number of node-disjoint connections between two nodes, the greater the effort an attacker has to make to reliably disconnect them. In this paper, we propose and evaluate "Consecutive s-Cliques" (CSC), which extends the routing tables in fully distributed networks managed by the Kademlia protocol with Harary graph structures. Harary graphs are undirected graphs that can be parameterized to contain the minimum number of edges necessary for being s-vertexconnected. The goal is to reach a greater connectivity than a Kademlia overlay network would typically have for a comparable routing table size, without significantly impeding the network performance in terms of routing, data storage, and data retrieval.

关键词： overlay networks network connectivity network resilience Harary graphs

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Beartooth Relay Protocol: Supporting Real-Time Application Streams with Dynamically Allocated Data Reservations over LoRa 30

Beartooth Relay Protocol: Supporting Real-Time Application S...

引用

30th International Conference on computer communications and networks (ICCCN)

作者： Mekiker, Batuhan Wittie, Mike P. Jones, Jefferson Monaghan, Michael Montana State Univ Bozeman MT 59717 USA Beartooth Radio Inc Bozeman MT USA

ISBN: (纸本)9780738113302

Convenient solutions that cater to different types of applications always gather more users. LoRa, one of the solutions in the IoT space is quite flexible at the physical layer, but link layer LoRa protocols lack similar flexibility. As a result, their performance remains suitable for the exchange of short messages in sensor networks, but does not extend to real-time and streaming IoT applications. Beartooth Relay Protocol (BRP) aims to address these limitations with a configurable link layer solution without compromising performance to sustain real-time flows over LoRa. We demonstrate that BRP expands the performance envelope of LoRa and makes it a suitable PHY technology for a wide range of IoT applications.

关键词： LoRa IoT Real-Time Low Latency Streaming Data Medium Access Control

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Automatic Recognition of Identification Schemes for IoT Identifiers based on A Hybrid DNN Model 30

Automatic Recognition of Identification Schemes for IoT Iden...

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30th International Conference on computer communications and networks (ICCCN)

作者： Li, Xiaotao You, Shujuan Chen, Wai China Mobile Res Inst Beijing Peoples R China

ISBN: (纸本)9780738113302

In Internet of Things (IoT), a unique identifier is essential for each object to serve as its digital identity and helps users to obtain the detailed information about this object. However, there are multiple encoding rules being used by different organizations to identify their objects, thus creating a great challenge for the applications that need to resolve multi-source heterogeneous identifiers. To address this issue, we propose an algorithm to automatically recognize the identification schemes of heterogeneous IoT identifiers, based on a hybrid deep neural network (DNN) model that combines a one-dimensional DNN model and a two-dimensional convolutional neural network (CNN) model. To satisfy the input criteria of the two-dimensional CNN, a novel identifier-to-polygon (I2P) strategy is presented to transform an IoT identifier to a unique polygon image. We evaluate our algorithm on the ID-20 dataset, showing that we can achieve an IoT identifier recognition accuracy of up to 94.77% and outperform other state-of-the-art methods.

关键词： IoT heterogeneous identifiers identifier-to-polygon hybrid DNN automatic recognition

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Federated Authorization for Managed Data Sharing: Experiences from the ImPACT Project 30

Federated Authorization for Managed Data Sharing: Experience...

引用

30th International Conference on computer communications and networks (ICCCN)

作者： Chase, Jeffrey S. Baldin, Ilya Duke Univ Comp Sci Durham NC 27708 USA RENCI UNC Chapel Hill Chapel Hill NC USA

ISBN: (纸本)9780738113302

This paper presents the rationale and design of the trust plane for ImPACT, a federated platform for managed sharing of restricted data. Key elements of the architecture include Web-based notaries for credential establishment based on declarative templates for Data Usage Agreements, a federated authorization pipeline, integration of popular services for identity management, and programmable policy based on a logical trust model with a repository of linked certificates. We show how these elements of the trust plane work in concert, and set the ideas in context with principles of federated authorization. A focus and contribution of the paper is to explore limitations of the resulting architecture and tensions among competing design goals. We also point the way toward future extensions, including policy-checked data access from cloud-hosted data enclaves with enhanced defenses against data leakage and exfiltration.

关键词： Privacy-restricted data Data Use Agreement Authorization Logic

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Super-Cloudlet: Rethinking Edge Computing in the Era of Open Optical networks 30

Super-Cloudlet: Rethinking Edge Computing in the Era of Open...

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30th International Conference on computer communications and networks (ICCCN)

作者： Mirkhanzadeh, Behzad Zhang, Tianliang Razo-Razo, Miguel Tacca, Marco Fumagalli, Andrea UT Dallas Open Networking Adv Res OpNeAR Lab Richardson TX 75080 USA

ISBN: (纸本)9780738113302

Edge computing is an attractive architecture to efficiently provide compute resources to many applications that demand specific QoS requirements. The edge compute resources are in close geographical proximity to where the applications' data originate from and/or are being supplied to, thus avoiding unnecessary back and forth data transmission with a data center far away. This paper describes a federated edge computing system in which compute resources at multiple edge sites are dynamically aggregated together to form distributed super-cloudlets and best respond to varying application-driven loads. In its simplest form a super-cloudlet consists of compute resources available at two edge computing sites or cloudlets that are (temporarily) interconnected by dedicated optical circuits deployed to enable low-latency and high-rate data exchanges. A super-cloudlet architecture is experimentally demonstrated over the largest public OpenROADM optical network testbed up to date consisting of commercial equipment from six suppliers. The software defined networking (SDN) PROnet Orchestrator is upgraded to both concurrently manage the resources offered by the optical network equipment, compute nodes, and associated Ethernet switches and achieve three key functionalities of the proposed super-cloudlet architecture, i.e., service placement, auto-scaling, and offloading.

关键词： Integrated optics Optical interconnections Optical switches Integrated circuit interconnections computer architecture Quality of service IEEE 802.3 Standard

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Budget-Constrained Reinforcement of SCADA for Cascade Mitigation 30

Budget-Constrained Reinforcement of SCADA for Cascade Mitiga...

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30th International Conference on computer communications and networks (ICCCN)

作者： Farhadi, Vajiheh Vennelaganti, Sai Gopal He, Ting Chaudhuri, Nilanjan Ray La Porta, Thomas Penn State Univ University Pk PA 16802 USA

ISBN: (纸本)9780738113302

We study the impact of coupling between the communication and the power networks as it affects a SCADA-based preventive control system. Today power grids use power lines to carry control information between components in the grid and a control center using power line carrier communication (PLCC). Thus a failure in the power grid will cause a failure in the control network and may reduce the capability of preventive control that in turn increases the risk of cascading failures. We pose the problem of allocating a limited number of non-PLCC communication links (e.g., microwave links) that are immune to failures in the power grid to maximize our controllability over the grid under power system failures, so as to maximize the total demand served at the end of cascade. By formulating the problem as a nonlinear integer programming problem, we establish its hardness and identify a generic heuristic that can find an approximate solution within controllable time. We further develop a domain-specific heuristic that utilizes both graph-theoretic and power system information to achieve similar performance as the generic heuristic at a much lower computational complexity. Our evaluations based on a 2, 383-bus Polish system demonstrate that only a few non-PLCC links, when placed correctly, can substantially improve the robustness of the grid as measured by the total demand served at the end of cascade.

关键词： DC-QSS cascading failure blackouts preventive control SCADA PLCC

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On Data-centric Forwarding in Mobile Ad-hoc networks: Baseline Design and Simulation Analysis 30

On Data-centric Forwarding in Mobile Ad-hoc Networks: Baseli...

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30th International Conference on computer communications and networks (ICCCN)

作者： Rahman, Md Ashiqur Zhang, Beichuan Univ Arizona Tucson AZ 85721 USA

ISBN: (纸本)9780738113302

IP networking deals with end-to-end communication where the network layer routing protocols maintain the reachability from one address to another. However, challenging environments, such as mobile ad-hoc networks or MANETs, lead to frequent path failures and changes between the sender and receiver, incurring higher packet loss. The obligatory route setup and maintenance of a device-to-device stable path in MANETs incur significant data retrieval delay and transmission overhead. Such overhead exaggerates the packet loss manifold. Named Data Networking (NDN) can avoid such delays and overhead and significantly improve the overall network performance. It does so with direct application-controlled named-data retrieval from any node in a network instead of reaching a specific IP address with protocol message exchange. However, existing works lack any explicit or systematic analysis to justify such claims. Our work analyzes the core NDN and IP architectures in a MANET at a baseline level. The extensive simulations show that NDN, when applied correctly, yields much lower data retrieval latency than IP and can lower the network transmission overhead in most cases. As a result, NDN's stateful forwarder can significantly increase the retrieval rate, offering a better trade-off at the network layer. Such performance comes from its caching, built-in multicast, and request aggregation without requiring an IP-like separate routing control plane.

关键词： network architecture mobile ad-hoc networks data-centric forwarding

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Extension Algorithms for Path Exposure in Energy Harvesting Wireless Sensor networks 30

Extension Algorithms for Path Exposure in Energy Harvesting ...

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30th International Conference on computer communications and networks (ICCCN)

作者： Basabaa, Abdulsalam Elmallah, Ehab S. Univ Alberta Dept Comp Sci Edmonton AB T6G 2E8 Canada

ISBN: (纸本)9780738113302

Our work in this paper concerns a wireless sensor network (WSN) problem, called the path exposure with communication range uncertainty (EXPO-RU) problem. Nodes in the network are assumed to rely on energy harvesting from the ambient environment to achieve prolonged operation of a WSN deployed to monitor unauthorized traversal along a given path. Fluctuations in the harvested energy are assumed to affect each node's transmission range. A 3-state probabilistic model where each node can be either in a full, reduced, or depleted energy state is used. We present two algorithms that complement existing algorithms in the literature to assess the reliability of a given energy harvesting wireless sensor network (EH-WSN). Each algorithm provides a basic tool that enables the construction of many other algorithms to bound the exact solution of the problem. We also present numerical results that show the impact of using the presented algorithms.

关键词： Wireless sensor networks Uncertainty Fluctuations computer network reliability Tools Probabilistic logic Energy states

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Semantic Identifiers and DNS Names for IoT 30

Semantic Identifiers and DNS Names for IoT

引用

30th International Conference on computer communications and networks (ICCCN)

作者： Fernandez, Simon Amoretti, Michele Restori, Fabrizio Korczynski, Maciej Duda, Andrzej Univ Grenoble Alpes LIG Grenoble INP CNRS F-38000 Grenoble France Univ Parma Dept Engn & Architecture Parma Italy

ISBN: (纸本)9780738113302

In this paper, we propose a scheme for representing semantic metadata of IoT devices in compact identifiers and DNS names to enable simple discovery and search with standard DNS servers. Our scheme defines a binary identifier as a sequence of bits: a Context to use and several bits of fields corresponding to semantic properties specific to the Context. The bit string is then encoded as base32 characters and registered in DNS. Furthermore, we use the compact semantic DNS names to offer support for search and discovery. We propose to take advantage of the DNS system as the basic functionality for querying and discovery of semantic properties related to IoT devices. We have defined three specific Contexts for hierarchical semantic properties as well as logical and geographical locations. For this last part, we have developed two prototypes for managing geo-identifiers in LoRa networks, one based on Node and the Redis in-memory database, the other one based on the CoreDNS server.

关键词： Internet of Things Semantic identifiers and names DNS W3C Thing Description LoRa Geohashes

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Performance Characterization of Post-Quantum Digital Certificates 30

Performance Characterization of Post-Quantum Digital Certifi...

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30th International Conference on computer communications and networks (ICCCN)

作者： Raavi, Manohar Chandramouli, Pranav Wuthier, Simeon Zhou, Xiaobo Chang, Sang-Yoon Univ Colorado Dept Comp Sci Colorado Springs CO 80918 USA

ISBN: (纸本)9780738113302

Public Key Infrastructure (PKI) generates and distributes digital certificates to provide the root of trust for securing digital networking systems. To continue securing digital networking in the quantum era, PKI should transition to use quantum-resistant cryptographic algorithms. The cryptography community is developing quantum-resistant primitives/algorithms, studying, and analyzing them for cryp-tanalysis and improvements. National Institute of Standards and Technology (NIST) selected finalist algorithms for the post-quantum digital signature cipher standardization, which are Dilithium, Falcon, and Rainbow. We study and analyze the feasibility and the processing performance of these algorithms in memory/size and time/speed when used for PKI, including the key generation from the PKI end entities (e.g., a HTTPS/TLS server), the signing, and the certificate generation by the certificate authority within the PKI. The transition to post-quantum from the classical ciphers incur changes in the parameters in the PKI, for example, Rainbow I significantly increases the certificate size by 163 times when compared with RSA 3072. Nevertheless, we learn that the current X.509 supports the NIST post-quantum digital signature ciphers and that the ciphers can be modularly adapted for PKI. According to our empirical implementations-based study, the post-quantum ciphers can increase the certificate verification time cost compared to the current classical cipher and therefore the verification overheads require careful considerations when using the post-quantum-cipher-based certificates.

关键词： Post-Quantum Cryptography Quantum-Resistant Cryptography Digital Certificate PKI

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