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Cellular Interworking: Handover between WATM and GSM
KTH, Superseded Departments, Teleinformatics. (CCSlab)
1998 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In a wireless environment, it is interesting to roam between different wireless systems, especially if the coverage of one or more of these systems are limited to a certain restricted area, or if there is a cost difference. My work has focused on the support of continuous handover in such a case. The work has focused on Wireless ATM and GSM as bearers for data traffic. The mobile terminal is considered to connect to the GSM or Wireless ATM network. Internet (IP networking) is considered to be the aim of the connection.

UMTS will probably be the base for new cellular systems. The UMTS core network will most likely be based on ATM. This is what is suggested in the standardization and has support from both Ericsson and Nokia. The WATM is an interesting option for "high speed" wireless network interface that can be connected to UMTS.

The solution has tried the approch of combining layer 2 tunneling with layer 3 signalling and investigated another solution than network layer mobility.The reasons to investigate this has been:

  • Layer 2 tunneling is a well-know and proven concept in cellular networks
  • The layer 2 connection can be transparently changed while being mobile.
  • Both QoS and traffic parameters in layer2 (e.g., ATM) can be used
  • The freedom and power of IP on layer 3 for signaling (and for data, of course)
Place, publisher, year, edition, pages
1998. , 108 p.
Keyword [en]
WATM, UTRA, Cellular intervorking, Public Wireless networks
National Category
Communication Systems
URN: urn:nbn:se:kth:diva-96284OAI: diva2:530144
Subject / course
Educational program
Master of Science in Engineering - Electrical Engineering
1998-05-18, Biblioteket, Teleinformatics, Isafjordsgatan 22, Kista, 10:00 (English)
Available from: 2012-06-15 Created: 2012-06-01 Last updated: 2013-09-09Bibliographically approved

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