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Wyszukujesz frazę "data transmission" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
FANET Drone’s 4K Data Applications, Mobility Models and Wi-Fi IEEE802.11n Standards
Autorzy:
QasMarrogy, Ghassan A.
Powiązania:
https://bibliotekanauki.pl/articles/1839466.pdf
Data publikacji:
2021
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
4K data transmission
FANET
mobility models
UAV
Opis:
With growing popularity of unmanned aerial vehicles (UAVs), the importance of flying ad-hoc networks (FANETs) is enhanced by such applications as 4K video recording, communications in search and rescue missions and goods deliveries, to name just a few. This, in turn, stimulates research on different topologies of networks existing between UAVs, with studies in this field being essential to improving performance of such networks. Several problems must be solved to effectively use UAVs in order to offer stable and reliable massive data transmission capabilities, taking into consideration quickly changing FANET topologies, types of routing, security issues, etc. In this paper, a comprehensive evaluation of FANETs used by UAVs is presented in terms of communication network challenges, data types, mobility models and standards applied in order to achieve best performance. The evaluation presented herein covers such areas as data throughput, retransmission attempts and delay.
Źródło:
Journal of Telecommunications and Information Technology; 2021, 1; 51-55
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
FANET Drone’s 4K Data Applications, Mobility Models and Wi-Fi IEEE802.11n Standards
Autorzy:
QasMarrogy, Ghassan A.
Powiązania:
https://bibliotekanauki.pl/articles/1839485.pdf
Data publikacji:
2021
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
4K data transmission
FANET
mobility models
UAV
Opis:
With growing popularity of unmanned aerial vehicles (UAVs), the importance of flying ad-hoc networks (FANETs) is enhanced by such applications as 4K video recording, communications in search and rescue missions and goods deliveries, to name just a few. This, in turn, stimulates research on different topologies of networks existing between UAVs, with studies in this field being essential to improving performance of such networks. Several problems must be solved to effectively use UAVs in order to offer stable and reliable massive data transmission capabilities, taking into consideration quickly changing FANET topologies, types of routing, security issues, etc. In this paper, a comprehensive evaluation of FANETs used by UAVs is presented in terms of communication network challenges, data types, mobility models and standards applied in order to achieve best performance. The evaluation presented herein covers such areas as data throughput, retransmission attempts and delay.
Źródło:
Journal of Telecommunications and Information Technology; 2021, 1; 51-55
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Testing of interworking between network terminals with FSK receivers and public exchanges providing display and related services
Autorzy:
Michalski, W.
Powiązania:
https://bibliotekanauki.pl/articles/308128.pdf
Data publikacji:
2004
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
testing methodology
display and related services
CLIP service
MWI service
SMS service
UBS solution
NBS solution
FSK protocol
Call Setup message
Message Waiting Indicator message
transmission associated with ringing
transmission not associated with ringing
data transmission prior to ringing
on-hook data transmission
off-hook data transmission
physical layer
data link layer
presentation layer
Opis:
Implementation of new services in the network requires appropriate methods and tools for checking correctness of interworking between terminals and exchanges. In this article the methodology and test procedures prepared for testing terminals handling FSK protocol transmitted over the local loop for display and related services was described. Methodology presented here is based on ETSI standards. Test procedures were developed for services offered in Polish network. Tests cover all levels of FSK protocol. For two lower layers, separate procedures for ^on-hook" and "off-hook" loop states were prepared. The procedure for "on-hook" state contains tests related to data transmission "associated" and "not associated with ringing". These procedures cover normal cases with parameter values and sequence elements complying with standards and exceptional procedures with the extreme values of the parameters and with modified elements of the sequences.
Źródło:
Journal of Telecommunications and Information Technology; 2004, 2; 66-72
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Personal communication services in wireless networks
Autorzy:
Michalski, W.
Powiązania:
https://bibliotekanauki.pl/articles/309467.pdf
Data publikacji:
2005
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
personal services
information services
voice services
data transmission services
services of flexible scenarios
number portability
universal personal telecommunications
universal access number
messaging
location-based information
transferring text information services
unified communications
e-commerce
e-shopping
telebanking
micropayments
Opis:
The paper presents modern personal services and new trends observed in evolution of wireless services. The article covers voice and data transmission services offered in mobile networks as well as information services delivered to users over Internet/IP networks. With reference to voice services, selected GSM services based on IN services platform, e.g., the services of flexible scenarios are described. Moreover, the status of VoIP service provided over WLAN is explained. Concerning data transmission services, selected UMTS services are presented as well. Among information services, presentation of wide scope of services offered to mobile users, e.g., messaging, location-based information, transferring text information, unified communications as well as Internet services, e.g., e-commerce, e-shopping, telebanking and micropayments is done. For both, voice and data transmission services, personal services are presented exclusively. Generally, the most attractive services with personal features are selected and described in this paper.
Źródło:
Journal of Telecommunications and Information Technology; 2005, 4; 147-153
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Labeling of signals in optical networks and its applications
Autorzy:
Borzycki, K.
Powiązania:
https://bibliotekanauki.pl/articles/308136.pdf
Data publikacji:
2004
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
optical fiber transmission
transparent optical network
pilot tone
network management
overhead data channel
optical fiber dispersion
optical label
Opis:
The paper is a review and comparative analysis of most common techniques proposed to attach additional data or identification information to digital signals in optical fiber networks by purely optical means. Such "labels" or "headers" can be attached either to continuous bit streams, e.g., in SDH networks or to optical packets. They enable to monitor, route and identify signals in transparent optical networks, especially those with optical wavelength multiplexing, allow management and supervision of remote optical amplifiers and can be used in optical switching systems. Other applications of this relatively unknown technology include monitoring of optical path dispersion, equalization of channels in DWDM systems and detection of intrusion or jamming in highly secure networks.
Źródło:
Journal of Telecommunications and Information Technology; 2004, 2; 73-88
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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