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Sociedade Brasileira de Telecomunicações

2010 - VII International Telecommunications Symposium



Analysis of multi-homed SCTP and delay-centric transmission for VoIP traffic in lossy networks

Nowadays a number of Internet access possibilities can be simultaneously available to fixed or mobile users. Adequate selection of the most appropriate comm...

SBrT 2010


Analyzing the Propagation Features of the Texas eZ430-RF2500 Device

The Texas eZ430-RF2500 is a new device developed for wireless networking applications. This paper analyzes the propagation features of this device for the ...

SBrT 2010


An Application Server Approach for Number Portability in IMS networks

Number portability (NP) is an important requirement present in most telephony networks. Typically, NP is regulated by local legislation and is inherently a...

SBrT 2010


An Approach for Solving the Base Station Placement Problem using Particle Swarm Intelligence

A large amount of studies deals with the base station placement problem (BSP), but few studies involve the selection of base stations to meet a set of user...

SBrT 2010


An Evaluation of the Effects of Propagation Channels on the Performance of WiMAX (IEEE 802.16-2004)

The purpose of this paper is to evaluate the performance of fixed-WiMAX (IEEE 802.16-2004) operating in seven propagation channel models, by implementing a W...

SBrT 2010