435 research outputs found

    Adoption of vehicular ad hoc networking protocols by networked robots

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    This paper focuses on the utilization of wireless networking in the robotics domain. Many researchers have already equipped their robots with wireless communication capabilities, stimulated by the observation that multi-robot systems tend to have several advantages over their single-robot counterparts. Typically, this integration of wireless communication is tackled in a quite pragmatic manner, only a few authors presented novel Robotic Ad Hoc Network (RANET) protocols that were designed specifically with robotic use cases in mind. This is in sharp contrast with the domain of vehicular ad hoc networks (VANET). This observation is the starting point of this paper. If the results of previous efforts focusing on VANET protocols could be reused in the RANET domain, this could lead to rapid progress in the field of networked robots. To investigate this possibility, this paper provides a thorough overview of the related work in the domain of robotic and vehicular ad hoc networks. Based on this information, an exhaustive list of requirements is defined for both types. It is concluded that the most significant difference lies in the fact that VANET protocols are oriented towards low throughput messaging, while RANET protocols have to support high throughput media streaming as well. Although not always with equal importance, all other defined requirements are valid for both protocols. This leads to the conclusion that cross-fertilization between them is an appealing approach for future RANET research. To support such developments, this paper concludes with the definition of an appropriate working plan

    SURVEY OF VEHICLE AD-HOC NETWORK

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    The communication is done in between cars that is based on the short range wireless technology. It become safety road and travel comfort using ad-hoc network. We see the different to communication mode in car network. Also we see the Geonetworking with car network. IPv6 is considered as the most appropriate technologies to support communication in VANET thanks to its extended address space, enhanced mobility support, ease of configuration and embedded security

    From Single Lane to Highways: Analyzing the Adoption of Multipath TCP in the Internet

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    Multipath TCP (MPTCP) extends traditional TCP to enable simultaneous use of multiple connection endpoints at the source and destination. MPTCP has been under active development since its standardization in 2013, and more recently in February 2020, MPTCP was upstreamed to the Linux kernel. In this paper, we provide the first broad analysis of MPTCPv0 in the Internet. We probe the entire IPv4 address space and an IPv6 hitlist to detect MPTCP-enabled systems operational on port 80 and 443. Our scans reveal a steady increase in MPTCP-capable IPs, reaching 9k+ on IPv4 and a few dozen on IPv6. We also discover a significant share of seemingly MPTCP-capable hosts, an artifact of middleboxes mirroring TCP options. We conduct targeted HTTP(S) measurements towards select hosts and find that middleboxes can aggressively impact the perceived quality of applications utilizing MPTCP. Finally, we analyze two complementary traffic traces from CAIDA and MAWI to shed light on the real-world usage of MPTCP. We find that while MPTCP usage has increased by a factor of 20 over the past few years, its traffic share is still quite low.Comment: Proceedings of the 2021 IFIP Networking Conference (Networking '21). Visit https://mptcp.io for up-to-date MPTCP measurement result

    Internet of Nano-Things, Things and Everything: Future Growth Trends

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    The current statuses and future promises of the Internet of Things (IoT), Internet of Everything (IoE) and Internet of Nano-Things (IoNT) are extensively reviewed and a summarized survey is presented. The analysis clearly distinguishes between IoT and IoE, which are wrongly considered to be the same by many commentators. After evaluating the current trends of advancement in the fields of IoT, IoE and IoNT, this paper identifies the 21 most significant current and future challenges as well as scenarios for the possible future expansion of their applications. Despite possible negative aspects of these developments, there are grounds for general optimism about the coming technologies. Certainly, many tedious tasks can be taken over by IoT devices. However, the dangers of criminal and other nefarious activities, plus those of hardware and software errors, pose major challenges that are a priority for further research. Major specific priority issues for research are identified

    Adaptive Address Family Selection for Latency-Sensitive Applications on Dual-stack Hosts

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    Latency is becoming a key factor of performance for Internet applications and has triggered a number of changes in its protocols. Our work revisits the impact on latency of address family selection in dual-stack hosts. Through RIPE Atlas measurements, we analyse the address families latency difference and establish two requirements based on our findings for a latency-focused selection mechanism. First, the address family should be chosen per destination. Second, the choice should be able to evolve over time dynamically. We propose and implement a solution formulated as an online learning problem balancing exploration and exploitation. We validate our solution in simulations based on RIPE Atlas measurements, implement and evaluate our prototype in four access networks using Chrome and popular web services. We demonstrate the ability of our solution to converge towards the lowest-latency address family and improve the latency of transport connections used by applications

    A Longitudinal View at the Adoption of Multipath TCP

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    Multipath TCP (MPTCP) extends traditional TCP to enable simultaneous use ofmultiple connection endpoints at the source and destination. MPTCP has beenunder active development since its standardization in 2013, and more recentlyin February 2020, MPTCP was upstreamed to the Linux kernel. In this paper, weprovide an in-depth analysis of MPTCPv0 in the Internet and the first analysisof MPTCPv1 to date. We probe the entire IPv4 address space and an IPv6 hitlistto detect MPTCP-enabled systems operational on port 80 and 443. Our scansreveal a steady increase in MPTCPv0-capable IPs, reaching 13k+ on IPv4(2×\times increase in one year) and 1k on IPv6 (40×\times increase). MPTCPv1deployment is comparatively low with ≈\approx100 supporting hosts in IPv4 andIPv6, most of which belong to Apple. We also discover a substantial share ofseemingly MPTCP-capable hosts, an artifact of middleboxes mirroring TCPoptions. We conduct targeted HTTP(S) measurements towards select hosts and findthat middleboxes can aggressively impact the perceived quality of applicationsutilizing MPTCP. Finally, we analyze two complementary traffic traces fromCAIDA and MAWI to shed light on the real-world usage of MPTCP. We find thatwhile MPTCP usage has increased by a factor of 20 over the past few years, itstraffic share is still quite low.<br
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