scholarly journals The concept of multicast protocol based on network coding

Telecom IT ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 26-36
Author(s):  
S. Vladimirov ◽  
A. Fomin

Research subject. The paper presents the concept of a multicast session protocol based on the net-work coding method. Method. Development of a data transfer protocol based on the analysis of existing principles and models of network coding. Core results. The proposed NCDP multicast protocol is de-signed to work over a datagram transport protocol. The basic structure of the NCDP packet header has been developed, taking into account the variability of the protocols used in conjunction with NCDP. Prac-tical relevance. The proposed protocol is intended for use in content delivery systems based on mul-ticast data transmission from several sources.

Author(s):  
Алексей Александрович Порошин ◽  
Кирилл Александрович Попонин ◽  
Вера Владимировна Королева ◽  
Наталья Александровна Сизонова

Рассмотрены вопросы разработки требований к протоколу обмена данными в системах передачи извещений о пожаре. Разработка требований связана с необходимостью организации информационной совместимости систем передачи извещений о пожаре различных производителей с автоматизированным рабочим местом диспетчера пожарно-спасательного подразделения. Предложен базовый состав информационных данных протокола обмена. Определен общий и минимально необходимый состав информационных атрибутов базы данных по объектам защиты, устанавливаемой на автоматизированном рабочем месте диспетчера пожарно-спасательного подразделения. The issues of elaboration of requirements for data transfer protocol in fire notification transmission systems are considered. The elaboration of requirements is related to the necessity of informational compatibility between fire notification transmission systems of various manufacturers and automated workstation of fire-and-rescue unit dispatcher. The basic structure of information data of the transfer protocol is proposed. The general and minimum required structure of information attributes of the database of objects of protection is determined. This database is installed at the automated workstation of the of fire-and-rescue unit dispatcher.


2014 ◽  
Vol 539 ◽  
pp. 220-223
Author(s):  
Hua Zhang

This paper discussed the problem of wireless sensor network data transmission protocols, and combined with the characteristics of WSN and the actual needs, the design and implementation of a data transmission priority queue and priority transmission scheme of ACK, provide an end-to-end transmission for the important information, and achieve the timely, reliable transmission of control information.


Author(s):  
С.С. ВЛАДИМИРОВ ◽  
А.Е. КУЧЕРЯВЫЙ

Представлены результаты тестирования протокола сетевого кодирования (СК) NCDP для сети с ромбовидной топологией. Рассмотрена структура ромбовидной сети и проведено сравнение простой последовательной передачи с передачей методом СК. Определена структура заголовка протокола NCDP для пакетовданных и управляющих пакетов. Предложен вариант виртуального лабораторного стенда для исследования работы протокола и выполнено сравнение протокола NCDP с простой последовательной передачей данных по среднему времени доставки группы пакетов. The results of testing the network coding protocol NCDP for a diamond topology network are presented. The structure of the diamond topology network is considered and a comparison of simple serial transmission with transmission by network coding method is made. The NCDP header structure for data packets and control packets is defined. A virtual laboratory testbed for studying the operation of the protocol is proposed and a comparison of the NCDP protocol with simple sequential data transmission by the average delivery time of a group of packets is performed.


2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
S Mittal ◽  
D Brenner ◽  
S Oliveros ◽  
A Bhatt ◽  
M Preminger ◽  
...  

Abstract Background A “pill-in-the-pocket” anticoagulation strategy, guided by ECG data from an implantable loop recorder (ILR), has been advocated as a clinical strategy. However, a fundamental requirement is the ability to reliably obtain daily ECG data from patients. Objective To determine the reliability of daily ECG data transfer from ILRs. Methods We evaluated patients implanted with an ILR in whom we sought to withhold oral anticoagulation (OAC) unless atrial fibrillation (AF) was detected. The ILR transmits data nightly to a bedside monitor. Once received, the data are sent to a central server. Over the course of a month, we tracked for each patient whether ECG data were received by the server. Results The study included 170 AF patients with an ILR where we planned to withhold OAC unless AF was documented. Daily ECG data were automatically transmitted and retrievable in only 36 (21%) patients. Two (1%) pts had not a single day of connectivity, 6 (4%) pts were connected <7 days, and 16 (9%) pts were connected <14 days. Wireless connectivity was lost for >48 hours in 89 (52%) patients (Figure). Most patients experienced multiple reasons for data transmission failure within the month. Conclusions To determine whether an ILR guided OAC strategy is feasible, reliable daily transmission of ECG data is a fundamental prerequisite. Current technology facilitated daily ECG data transfer in only 1/5 of patients. In the remaining, there was either extended loss of connectivity or no connectivity at all. A “pill-in-the-pocket” anticoagulation approach is currently difficult given existing hardware limitations. Funding Acknowledgement Type of funding source: None


2012 ◽  
Vol 229-231 ◽  
pp. 1543-1546
Author(s):  
Xiao Bo Zhou ◽  
Min Xia ◽  
Hai Long Cheng

To improve data transmission performance of the data acquisition card, a design of high-speed data transmission system is proposed in the thesis. Using FPGA of programmable logic devices, adopting Verilog HDL of hardware description language, the design of modularization and DMA transmission method is implemented in FPGA. Eventually the design implements the data transmission with high-speed through PCI Express interface. Through simulation and verification based on hardware system, this design is proved to be feasible and can satisfy the performance requirements of data transmission in the high-speed data acquisition card applied in high-speed railway communication. The design also has some value of application and reference for a universal data acquisition card.


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