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A Survey of QoS Routing Protocols for Ad Hoc Networks

100%
Tafa I.
Academicus. International Scientific Journal
|
2011
|
issue 03
108-120
EN
The aim of this paper is to give a big survey in enhancing the balance of the routing load and the consumption of resources using network layer metrics for the path discovery in the MAODV protocol. A ad hoc network (AD HOC NETWORKS) consists of a collection of wireless mobile nodes, which form a temporary network without relying on any existing infrastructure or centralized administration. The bandwidth of the ad hoc networks architecture is limited and shared between the participating nodes in the network, therefore an efficient utilization of the network bandwidth is very important. Multicasting technology can minimize the consumption of the link bandwidth and reduce the communication cost too. As multimedia and group-oriented computing gains more popularity for users of ad hoc networks, the effective Quality of Service (QoS) of the multicasting protocol plays a significant role in ad hoc networks. In this paper we propose a reconstruction of the MAODV protocol by extending some featuring QoS in MAODV. All simulations are prepared with the NS2 simulator and compare the performance of this algorithm with the MAODV algorithm. The achieved results illustrate faster path discovery and more performing routing balance in the use of MAODV-Extension.This paper would give relatively a modest support in Mobile Technology according to QoS communication.
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WLAN – Wireless Platform for Future Services

72%
Dolińska I., Masiukiewicz A.
Zeszyty Naukowe Uczelni Vistula
|
2014
|
issue 38/2014 Informatyka
5-19
EN
Many wireless standards have been developed up till now; however, only two of them are commonly used. The mobile telephony and WLAN networks dominate in the wireless services sector. The number of mobile network customers reaches billions and this number still increases. Are the present achievements a border for wireless technologies? During the last years it has become evident that wireless data rates are increasing over time. Another question remains open: will be there a need for data rates above 100 Mbit/s in future? Today already more than 50% of data transmission on mobile networks is the effect of the video streaming applications.
PL
Dotychczas opracowano wiele standardów bezprzewodowych, tym niemniej jedynie dwa z nich są powszechnie stosowane. W sektorze usług telefonii bezprzewodowej dominują telefonia komórkowa i sieci WLAN. Liczba klientów sieci mobilnych sięga miliardów i nadal się zwiększa. Czy obecne osiągnięcia stanowią granicę dla technologii bezprzewodowych? W ostatnich latach stało się oczywiste, że z biegiem czasu szybkość bezprzewodowej transmisji danych zwiększy się. Otwarte pozostaje inne pytanie: czy w przyszłości będzie zapotrzebowanie na szybkość transmisji danych powyżej 100 Mbit/s? Dziś już ponad 50% transmisji danych w sieciach mobilnych jest efektem zastosowań przesyłu strumieniowego obrazów
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