Dual-mode Capability in a WLAN-equipped PC for Roaming and Mobility between WLANs and GPRS Networks
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
The goal of this masters thesis work has been to develop and evaluate a solution that enables a WLAN-equipped mobile PC to establish and maintain connectivity by means of cellular network services, and more specifically a GPRS network, when roaming and moving outside the coverage area of a WLAN.
Both network operators and the software industry are looking for inter-technology roaming solutions that can be implemented with minimal changes to existing infrastructures and standards. We have come to the conclusion that the use of Mobile IP is the solution that best meets these conditions as it is implemented on an IP level and treats wireless LAN and GPRS as peer networks, without any modifications to WLAN or GPRS protocols.
In addition to the architectural solution efficient mobility is also dependent on the choice of handover algorithm, which decides when to connect to the WLAN and when to connect to the GPRS network. Using studies and measurements we have concluded that a good handover algorithm is vital for good TCP performance when performing a handover between WLAN and GPRS.
Place, publisher, year, edition, pages
2001. , 69 p.
IdentifiersURN: urn:nbn:se:kth:diva-93285OAI: oai:DiVA.org:kth-93285DiVA: diva2:515537
Subject / course
Master of Science in Engineering - Electrical Engineering
2001-02-13, Seminar room "Telegrafen", Isafjordsgatan 22, Kista, 15:00 (English)
Maguire Jr., Gerald Q., professorBoström, TomasMoioli, Fabio
Maguire Jr., Gerald Q., professor