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Inter-vehicle communication (IVC) is a key component enabling the autonomous driving vehicles. Standardization of IVC is advanced but yet improvements are still introduced. Congestion control is one of the sensitive topics. The IVC European standard ITS-G5 addresses the congestion issue enabled by a geo-networking protocol that exploits at networking level the geographic information. Implementation...
Most networking performance enhancements occur through specific static solutions, where the structure of the protocol stack remains unchanged. Instead, we focus on a flexible software and hardware co-design for the entire protocol stack. In this paper, we present EmbedNet, a System-on-Chip implementation of a flexible network architecture for the Future Internet, where parts of the protocol stack...
Current network protocol binary software testing methods cannot discover serious vulnerabilities in deep states. This article introduces a novel method based on multi-packet symbolic execution, which can drive the software to deep states, to test the whole network protocol binary software stacks. This article also presents a prototype system, S2EProtocol-multi, upon Selective Symbolic Execution (S2E)...
Aquaculture processes usually take place in remote and harsh environments, and are highly dependent on uncontrollable and unpredictable variables, therefore its monitoring and supervision can be a key factor in this activity. Taking that into account, this paper proposes a solution for a Remote Supervision System for Aquaculture Platforms, that contemplates a modular, reconfigurable and expandable...
The paper analyses interactions of all programmable systems-on-chip (Xilinx Zynq-7000 devices) with host computers through fast PCI-express bus. A case study of such interactions is presented for Xilinx ZC706 evaluation board that enables PCIe ×4 Gen2 communications. The developed driver for Linux applications in PC provides read/write functions for general-purpose programs that enable data transfers...
Delay /Disruption Tolerant Network (DTN) is an emerging architecture for internetworking with regional networks of different characteristics as a single entity. The first part of the paper briefs terrestrial and space applications of DTN, different implementations available, real world projects already deployed, the open problems, and the research activities in the area. The paper discusses CCSDS...
Industrial SCADA systems are deployed all across the globe for refineries, water treatment, nuclear power plants, oil fields and process plants. SCADA systems are vulnerable to attacks by hackers which can damage expensive equipment and jeopardize human health and safety in large areas. In this paper, we define SCADA security related issues and discuss the current security tools and techniques. Later,...
With the development of optical technology and high performance computing, more and more high-speed network has emerged to support massive scientific data transfer such as High Energy Physics computing. Therefore, it is very important to study the performance of transport control protocol over high speed networks. In this paper, we focus on how to measurement the performance of variant TCP over high...
Aiming at the current situation of hydrological monitoring, integrating with the application of internet of things in hydrological monitoring area, to realize automation of hydrological monitoring, the system for hydrologie monitoring based on internet of things is designed. This system is constructed with internet of things technology, software technology, evaluated network technology, etc. The system...
Software evolution is the process to meet the market requirements. The software after evolution has many new features worth of research. In this paper, we analyze the evolution of Linux, Windows, and Minix in detail, and analyzes from OSPF-v2 to OSPFv3 by RFC. The kernel call and system call of Minix3 and OSPF protocol are modeled with Colored Petri Net (CPN) Tools. Fork, as an example of system call,...
Recently, Internet use has increased rapidly especially in Asia, and the stock of IPv4 address has been exhausted. Fundamental solution for IPv4 address depletion is to migrate IPv6. However, since IPv6 is not compatible with IPv4 (such as address length, header structure), they can't communicate with each other directly. High Performance Packet Processing Engine (HPPPE) is a network processing software...
The combination of the high-performance psort sorting library and of a carefully tuned desktop-class cluster allowed us to improve the previous record on the Datamation sort benchmark by over an order of magnitude, sorting a million 100 byte records from disk to disk in a few dozen milliseconds. Of the many implementation and configuration choices we faced, the most crucial were judicious data placement...
This paper introduces the underwater acoustic modem as implemented within the UAN - Underwater Acoustic Network project. The low power modem has implemented turbo equalization algorithms in addition to variable spread rate direct sequence spread spectrum signaling. The network layer implemented on the modem support automatic network discovery, multi hop routing and support for mobile nodes, and when...
We present the design and evaluation of a flexible UHF RFID reader that enables new PHY/MAC designs to be prototyped and evaluated. Our reader is built using the USRP software radio platform in conjunction with software we developed in the open-source GNU Radio framework. We believe it is the first inexpensive tool that readily enables changes to the physical and MAC layer of RFID systems. We evaluate...
Acoustic Doppler Current Profiler (ADCP) instruments are commonly used for sensing oceanographic currents. In the initial generation of these instruments many of the design decisions, and resulting features of the overall instrument, were based on the limitations of the technology available at that time. This paper describes the design decisions underlying a recently developed ADCP instrument, which...
oSIP (open SIP) is an open source SIP protocol stack based on RFC-3261. It provides multimedia software developers with powerful APIs to develop SIP multimedia communication software. In this paper, we study on the oSIP framework, operation mechanism and oSIP APIs. In embedded Linux OS and Qt multimedia software developing environment, the oSIP implementation method is shown as an example.
Based on SD memory card, the communication & storage system of the embedded portable spectrometer was designed, so the spectrometer can save data and change the analysis model files. In the system, SD card was used to store data files, and the communication function was designed by using serial port to send the file and command and receive the file. So the system can be used to accomplish uploading...
This paper discusses an embedded access gateway, which takes OMAP3530 as the center core and is built upon the embedded Linux 2.6 operating system. Based on the character and advantage of 3G and ZigBee, this article advances the solution scheme of the wireless home gateway. Mainly analyzes the software design of the gateway, including the way to realize the communication between the gateway and 3G...
In this paper we study the power consumption of networked devices in a large Campus network, focusing mainly on PC usage. We first define a methodology to monitor host power state, which we then apply to our Campus network. Results show that typically people refrain from turning off their PC during non-working hours so that more than 1500 PCs are always powered on, causing a large energy waste. We...
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