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Mobile operators are today facing the daunting challenge of providing cheap and valuable services to ever more demanding customers. As a matter of fact, mobile standards have not yet really addressed this expectation of open, cheap and flexible web oriented internet access. As an alternative, we introduced an IP-centric QoS model mainly inspired by IP policies commonly found in fixed networks. In...
The mobile ecosystem is currently facing tremendous changes; in particular, the actual deployment of 4G will probably not be sufficient to totally fit the upcoming mobile data traffic explosion. This mismatch may be explained by the low marginal revenues expectable from mobile data compared to huge investments it requires. Consequently, congestion may appear soon in radio access networks, thus degrading...
In this paper we present a way to add Quality of Service features to a NEMO Mobile Router. After a presentation of QoS concepts, we show how those are implemented under the GNU/Linux operating system. We then present the chosen QoS configuration, which involves local packet marking and scheduling using priority queuing and rate limiting. Performance tests results are finally shown.
The following topics were dealt with: wireless sensor networks; MANET; WLAN; IEEE 802.11; MIMO; OFDMA; scheduling; mobility and resource management; Internet; localization; WiMax; coding; OFDM; media streaming; QoS; security; WiMob; cryptographic protocols; ad hoc networks security; broadband wireless access; wireless and mobile computing.
Third generation (3G) and the Internet are identified as the main drivers for the future generation mobile telecommunication market. Several concerns arise when Internet protocol (IP) transport is introduced. Applications such as streaming and packet telephony will cause network congestion. This will affect the quality of service (QoS) of voice communication. This paper discusses the QoS and the parameters...
This paper explores the attributes, layering models and objective functions in cross layer designs for mobile ad hoc wireless networks by taking all the statistical characteristics and constraints from the physical (PHY) layer, media access control (MAC) layer and network (NET) layer into consideration. This paper reviews the entire network optimization across all the PHY/MAC/NET layers. At the PHY...
In the adaptation system providing personalized service for mobile and fixed users, improvement of content quality and decrease of user wait time are contradictory requirements. Existing studies only care about the ordinary network QoS in the sense of reducing user wait time. In this paper, we give out a formula that combines the content quality and wait time for the user perceived Web page quality...
Four methods of mobile IP (MIP) registration; call admission control (CAC), L2/L3 mobility and DiffServ mapping are mentioned for QoS assurance in portable Internet networks. At operator's first implementation stage, QoS assurance method of only L2 mobility is applied with QoS parameter of CAC and scheduling function of its CAC. The CAC is applied differently according to class of service, and CAC...
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