scholarly journals Models and Methods for Improving Performance of Wireless Computer Networks Based on the Decomposition of Lower Layers of the OSI Reference Model

2022 ◽  
Vol 12 (1) ◽  
pp. 152-162
Author(s):  
Andriy Dudnik ◽  
◽  
Ivan Bakhov ◽  
Oleksandr Makhovych ◽  
Yulia Ryabokin ◽  
...  
Keyword(s):  
Computer Networks ◽  
Data Transmission ◽  
Noise Immunity ◽  
Reference Model ◽  
Block Diagram ◽  
Status Monitoring ◽  
Network Layers ◽  
Transmission Quality ◽  
User Priority ◽  
Osi Reference Model

The paper discusses models and methods for improving the performance of wireless computer networks built based on the decomposition of the lower levels of the OSI reference model. A method to improve the performance of networks is suggested, which functionally combines the physical and network layers, which improves its efficiency in marginal reception areas almost twice. A model of the block diagram of a device for improving data transmission quality in marginal reception areas or those with insufficient noise immunity is developed based on the so-called communication quality status monitoring, as well as a model of the block diagram of a wireless adaptive capacity reallocation router based on dynamic channels capacity reallocation, which allows adequately reallocating IS resources depending on traffic and user priority. Keywords— Bluetooth, FIFO discipline, IEEE 802.11, OSI/ISO reference model, wireless computer networks.

A Hands-On Approach to Teaching the Basic OSI Reference Model

2000 ◽  
Vol 37 (2) ◽  
pp. 157-166 ◽  
Author(s):  
T. Tuma ◽  
I. Fajfar ◽  
M. Perko ◽  
F. Bratkovič ◽  
J. Puhan
Keyword(s):  
Computer Networks ◽  
Open System ◽  
Local Area Network ◽  
Reference Model ◽  
Local Area ◽  
Area Network ◽  
Hands On ◽  
System Interconnection ◽  
Approach To Teaching ◽  
Osi Reference Model

A new local area network (LAN) concept designed for educational purposes is proposed based upon the standard RS232 protocol. The concept enables students to gain hands-on experience of all seven open system interconnection (OSI) layers. The proposed approach to teaching computer networks has proved very popular with students. At the same time students' comprehension of basic OSI concepts has improved considerably.

Study on LTE Data Transmission Quality Test of TSMD (Train Safety Monitoring Device)

2018 ◽  
Vol 6 (3) ◽  
pp. 213-221
Author(s):  
Soo-Hwan Lee ◽  
You-Ho Kim ◽  
Sang-ahm Kim ◽  
Hyun-Ju Hwang ◽  
Yong-Woon Choi
Keyword(s):  
Data Transmission ◽  
Safety Monitoring ◽  
Monitoring Device ◽  
Quality Test ◽  
Transmission Quality ◽  
Train Safety

CORM

2012 ◽  
pp. 174-201
Author(s):  
Hoda Mamdouh Hassan
Keyword(s):  
Complex System ◽  
Network Design ◽  
Computer Networks ◽  
Reference Model ◽  
Network Architectures ◽  
Engineering Approach ◽  
Engineering Discipline ◽  
Technological Constraints ◽  
System Characteristics ◽  
Derivation Process

Designing future computer networks dictates an eclectic vision capable of encompassing ideas and concepts developed in contemporary research unfettered by today’s operational and technological constraints. However, unguided by a clear articulation of core design principles, the process of network design may be at stake of falling into similar pitfalls and limitations attributed to current network realizations. This chapter presents CORM: a clean-slate Concern-Oriented Reference Model for architecting future computer networks. CORM stands as a guiding framework from which several network architectures can be derived. CORM represents a pioneering attempt within the network realm, and to the author’s knowledge, CORM is the first reference model that is bio-inspired, accounts for complex system characteristics, and applies a software engineering approach to network design. Moreover, CORM’s derivation process conforms to the Function-Behavior-Structure (FBS) engineering framework, which is credited to be applicable to any engineering discipline for reasoning about, and explaining the process of design.

Data transmission in Hybrid Distributed Environment

2016 ◽  
Vol 6 (6) ◽  
pp. 2989
Author(s):  
Anton Pavlovich Teykhrib
Keyword(s):  
Packet Loss ◽  
Data Transmission ◽  
Communication Channel ◽  
Packet Transmission ◽  
Distributed Environment ◽  
High Quality ◽  
Channel Characteristics ◽  
Network Layers ◽  
Distribution Scheme ◽  
Selection Of

<p>This article discusses a hybrid distributed environment including two levels of nodes: the first level which has high quality channels between the nodes, and the second one in which the nodes are directly involved in communication and the communication is performed through the first-level nodes. For the indicated distribution scheme, the questions of selection of the best path between the first-level nodes are solved based on such communication channel characteristics as delay in packet transmission, jitter in transmission, packet loss in transmission, and choosing a method for data transmission through the selected best path: protocols of transport and network layers have been compared, and the use of network layer has been preferred.</p>

Packet Transport Network Recovery System with Examination of Data Transmission Quality

2019 ◽  
Vol 27 (03) ◽  
pp. 2050007
Author(s):  
Toshiaki Suzuki ◽  
Hiroyuki Kubo ◽  
Hayato Hoshihara ◽  
Taro Ogawa
Keyword(s):  
Data Transmission ◽  
Transport Network ◽  
Failure Pattern ◽  
Protection Scheme ◽  
Network Recovery ◽  
Recovery System ◽  
Transmission Quality ◽  
Network Failures ◽  
Plane Scheme ◽  
Backup Paths

A packet transport network recovery system based on failure pattern under examination of transmission quality is proposed. Network failures are segmented into one of the three patterns: single failure of a node, failures of multiple nodes, and failures of multiple network areas. The single failure is recovered by a protection scheme. For failures of multiple nodes or multiple areas, recovery is performed by a node-based multiple-backup operation plane scheme or by an area-based multiple-back operation plane scheme, respectively. A unique recovery ID is assigned to each failure pattern and backup paths with the recovery ID are stored in each node. When network failures occur, the network management server determines the type of failure and sends the appropriate recovery ID to the nodes. Then recovery paths are configured. Our proposed system took about 0.5[Formula: see text]s to configure 1000 backup paths after failures were detected, compared to about 4[Formula: see text]s by a conventional scheme. For the examination of data transmission quality, multiple paths that do not share the same link are grouped and configured concurrently. The number of groups is regarded as the performance of the configuration. The performance of the proposed system is about three times faster than a configuration without grouping.

Data Transmission Oriented on the Object, Communication Media, Application, and State of Communication Systems

2011 ◽  
Vol 3 (2) ◽  
pp. 51-65
Author(s):  
Mike Sabelkin ◽  
François Gagnon
Keyword(s):  
Data Transmission ◽  
Channel Coding ◽  
Communication Systems ◽  
Reference Model ◽  
Image Transmission ◽  
Wireless Channel ◽  
Superior Performance ◽  
Communication Media ◽  
Fast Analysis ◽  
Wide Range

The proposed communication system architecture is called TOMAS, which stands for data Transmission oriented on the Object, communication Media, Application, and state of communication Systems. TOMAS could be considered a Cross-Layer Interface (CLI) proposal, since it refers to multiple layers of the Open Systems Interconnection Basic Reference Model (OSI). Given particular scenarios of image transmission over a wireless LOS channel, the wireless TOMAS system demonstrates superior performance compared to a JPEG2000+OFDM system in restored image quality parameters over a wide range of wireless channel parameters. A wireless TOMAS system provides progressive lossless image transmission under influence of moderate fading without any kind of channel coding and estimation. The TOMAS system employs a patent pending fast analysis/synthesis algorithm, which does not use any multiplications, and it uses three times less real additions than the one of JPEG2000+OFDM.

Study on Materials Selection and Construction of Digital Language Lab Based on Properties of Electronic Materials

2013 ◽  
Vol 738 ◽  
pp. 299-302
Author(s):  
Qiang Yi Xi
Keyword(s):  
Data Transmission ◽  
Electronic Materials ◽  
Network Protocol ◽  
Language Training ◽  
Materials Selection ◽  
Transmission Quality ◽  
Set Up ◽  
Digital Language

Nowadays, the traditional analog language lab is being replaced by the digital language lab, in which the transfer of data between the network and the terminal is realized through the standard network protocol and the data transmission quality has met the requirements in language training. However, how to utilize present resources and set up standard digital language labs needs more researching. This paper mainly deals with the materials selection and the construction of the digital language lab based on properties of electronic materials, and thus provides reference to set up more efficient and more effective language labs.

The upper layers of the ISO/OSI reference model (part II)

1986 ◽  
Vol 5 (2) ◽  
pp. 65-77 ◽  
Author(s):  
Wilfred A Melendez ◽  
Erik Lorenz Petersen
Keyword(s):  
Reference Model ◽  
Osi Reference Model

The OSI reference model

1983 ◽  
Vol 71 (12) ◽  
pp. 1334-1340 ◽  
Author(s):  
J.D. Day ◽  
H. Zimmermann
Keyword(s):  
Reference Model ◽  
Osi Reference Model
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