No full-text available
To read the full-text of this research,
you can request a copy directly from the authors.
EVALUATION OF THE EFFECTIVENESS OF CHANNEL LEVEL PROTOCOLL PARAMETERS
Abstract
There is justification for a simulation model for assessing channel level protocols. The effect of the data link layer protocol parameters on the data transfer function is analyzed. The data link protocol parameters have been specified and split into two categories, which are customizable and not configurable. In the work, parameters such as the acceptable information frame size are related in detail to the tunable data link protocol parameter; service personnel format; time-out value; unconfirmed frame window size, etc. That nominal data transfer rate, error-correcting codes used, etc. are non-configurable parameters.
ResearchGate has not been able to resolve any citations for this publication.
Satellite networks are inevitable for the ubiquitous connectivity of M2M (machine to machine) and IoT (internet of things) devices. Advances in the miniaturization of satellite technology make networks in LEO (Low Earth Orbit) predestined to serve as a backhaul for narrow-band M2M communication. To reduce latency and increase network responsivity, intersatellite link capability among nodes is a key component in satellite design. The miniaturization of nodes to enable the economical deployment of large networks is also crucial. Thus, this article addresses these key issues and presents a design methodology and implementation of an adaptive network architecture considering highly limited resources, as is the case in a nanosatellite (≈10 kg) network. Potentially applicable multiple access techniques are evaluated. The results show that a time division duplex scheme with session-oriented P2P (point to point) protocols in the data link layer is more suitable for limited resources. Furthermore, an applicable layer model is defined and a protocol implementation is outlined. To demonstrate the technical feasibility of a nanosatellite-based communication network, the S-NET (S band network with nanosatellites) mission has been developed, which consists of four nanosatellites, to demonstrate multi-point crosslink with 100 kbps data rates over distances up to 400 km and optimized communication protocols, pushing the technological boundaries of nanosatellites. The flight results of S-NET prove the feasibility of these nanosatellites as a space-based M2M backhaul.
The adoption of real-time wireless technologies within the ever-growing field of networked industrial control systems is continuously gaining popularity. Widespread sensing and actuation devices based on high-throughput wireless standards allow for an increased system mobility and lower configuration and maintenance costs. The IEEE 802.11 standard, especially in its most recent amendments, pushes performance to a very high level, theoretically approaching those of the most common real-time Ethernet networks. Its nondeterministic communication behavior, however, makes 802.11 unsuitable for mission- and safety-critical applications with high-reliability requirements, at least in its standard form. In this paper, we present several major solutions that tackled this issue to achieve real-time and reliability guarantees in wireless networked control systems, capitalizing on the strong efforts devoted to the adoption of IEEE 802.11 physical layer (PHY) technologies. We first provide a deep analysis of the 802.11 protocols in order to propose guidelines toward smart parameter selection at the data-link layer (DLL). In addition, the design of effective rate selection algorithms is considered as a way of increasing both the timeliness and reliability of data delivery. A further systematic solution is represented by real-time (RT)-WiFi, a new time-division multiple-access (TDMA)-based highly configurable DLL protocol that enables high-speed hard real-time data exchange over 802.11 networks. An important goal of this paper is also to provide a thorough comparison among different discussed solutions, in order to put in evidence their advantages and disadvantages, possibly in relation with systems based on different underlying PHYs. We will finally highlight the open challenges and future directions in this active research field.
The data networks are basically designed with the aim of maximum throughput and fair resource allocation by managing available resources. A transport layer plays an important role in throughput and fairness with the help of congestion control algorithms (variants). This survey targets mainly congestion issues in high-speed data networks to improve efficiency at connection or flow level. Transmission Control Protocol (TCP) is a dominating transport layer protocol in the existing network because of its reliable service and deployment in most of the routers. A cause of congestion may be different in wired and wireless network and needs to be handled separately. Packet delay, packet loss and time out (RTO) are not caused by congestion in case of wireless network. This has been taken into account in our consideration. To overcome the dominance of TCP, Google proposed UDP based solution to handle congestion control and reliable service with minimum latency and control overhead. In the literature several methods are proposed to classify transport layer Protocols. In this survey congestion control proposals are classified based on situation handled by the algorithm such as pure congestion, link loss, packet reordering, path optimization etc. and at the end congestion control at flow level has been addressed.
In this work, we introduce an enhanced cooperative medium access control protocol which merges a cooperative protocol with a packet correction technique at the link layer level. The proposed protocol aims to improve data communication reliability of in-home broadband power line communication (PLC) systems. More specifically, the cooperative protocol performs relayed retransmissions according to the relay availability, for assisting data communication between nodes source and destination. In case a data packet retransmission fails, the node destination uses corrupted copies from the transmitted and the retransmitted packets from nodes source and relay, respectively, which are stored in its buffer, in order to detect and correct the erroneous bits. The performance evaluation of the proposed protocol is accomplished by simulations based on measured power line channel frequency responses and an additive noise model of in-home electric power grids, which cover broadband applications and bit error pattern at the link layer level. The physical layer makes use of orthogonal frequency division multiplexing and orthogonal frequency division multiple access schemes. Furthermore, a comparison among PLC systems using the proposed protocol to others using only a cooperative protocol and without any cooperative protocol at link layer is analyzed. Numerical results show that improvements in terms of data communication reliability can be achieved in comparison with previous protocols under the presence of background and impulsive noises.
The mobility of an ad hoc network can severely degrade the performance of the wireless network, as a direct consequence of frequently occurring link break events. An ad hoc routing protocol must react swiftly to these events by recomputing the forwarding table. Typical routing protocols rely on a timeout mechanism to notify a failing link. This causes a gap between the link failure and the detection of this event, resulting in packet loss for data streams passing over the failing link. In this paper we present a new cross-layer neighbor sensing mechanism for an ad hoc routing protocol in mobile ad hoc networks. By tuning the cross-layer transmission parameters of the neighbor sensing signaling packets, we divide the communication range of the mobile node into two zones: a smaller virtual range for the ad hoc routing protocol and a larger effective communication range for data streams. When a neighboring node moves away, the larger range enables a mobile node to continue to receive data packets from that node, while the routing protocol is reacting to the virtual link break by recomputing the forwarding table. This enables the routing protocol to find an alternative route before the neighboring node moves out of the communication range.
Principe of the channel level protocol for the packet transmission of heterogeneous traffic over low-speed channels // T-Comm: Telecommunications and transport
- A V Tuchkin
Tuchkin A.V. Principe of the channel level protocol for the packet transmission of heterogeneous
traffic over low-speed channels // T-Comm: Telecommunications and transport. 2008. Т. 2. № 3.
Pages 31-33.
Modeling of radio access systems in multiservice communication networks. Modeling, optimization and information technologies
- A V Ponachugin
- I V Gusev
Ponachugin A.V., Gusev I.V. Modeling of radio access systems in multiservice communication
networks. Modeling, optimization and information technologies. 2018. Т. 6. № 1 (20). Pages 118-130.
Estimation of influence of protocols of an additional channel level on parameters of transport system of an info
- N N Moshak
Moshak N.N. Estimation of influence of protocols of an additional channel level on parameters of
transport system of an info-communication network on technologies IP-KOS // Trudy of
educational institutions of communication. 2006. № 175. Pages 62-72.
// Software implementation of a simulation model of information security threats proliferation in a computer network based on the use of Petri networks // Collection: Information Counteraction to Extremism and Terrorism of the Material of the All-Russian Scientific and Practical Conference
- V V Menshikh
- A V Tolstikh
Menshikh V.V., Tolstikh A.V. // Software implementation of a simulation model of information
security threats proliferation in a computer network based on the use of Petri networks //
Collection: Information Counteraction to Extremism and Terrorism of the Material of the All-Russian Scientific and Practical Conference. 2015. Pages 124-127.
Model of organization of the repeated transmissions in the channels exposed to the interference // Modern science: actual problems of theory and practice. Series: Natural and Technical Sciences
- F I Kushnazarov
Kushnazarov, F.I. Model of organization of the repeated transmissions in the channels exposed to
the interference // Modern science: actual problems of theory and practice. Series: Natural and
Technical Sciences. 2015. № 12. Pages 62-67.
Development and modeling of methods used in the protocols of the channel level of the wi-fi networks for the delivery of the real time video streams // Cand
- A G Kiryanov
A.G. Kiryanov. Development and modeling of methods used in the protocols of the channel level
of the wi-fi networks for the delivery of the real time video streams // Cand. A.A. Kharkevich
RAS. Moscow, 2016.
Analysis of data transmission protocols in the backbone networks // Collection: Actual problems of info telecommunications in science and education collection of scientific articles in the international scientific-technical and scientific-methodical conference
- D S Goncharova
- A V Ulyanov
Goncharova, D.S.; Ulyanov, A.V. Analysis of data transmission protocols in the backbone
networks // Collection: Actual problems of info telecommunications in science and education
collection of scientific articles in the international scientific-technical and scientific-methodical
conference. 2016. Pages 335-338 (in Russian).
A data link layer in support of swarming of autonomous underwater vehicles // В сборнике: OCEANS '09 IEEE Bremen: Balancing Technology with Future Needs Bremen
- M D Jabba
- M A Labrador
Jabba M D., Labrador M.A. A data link layer in support of swarming of autonomous underwater
vehicles // В сборнике: OCEANS '09 IEEE Bremen: Balancing Technology with Future
Needs Bremen, 2009. Pages 250.