November 2003
Vol.41 No.11
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Integration of 3G Wireless and Wireless LANs |
| Vijay K. Varma, K. Daniel Wong, Kee-Chaing Chua, and Frederic Paint |
Interworking Architecture Between 3GPP and WLAN Systems
The Third Generation Partnership Project has recently taken the initiative to develop a cellular-WLAN interworking architecture as an add-on to the 3GPP cellular system specifications. The authors present an overall view on an interworking architecture, which enables provisioning of public WLAN access service for the 3GPP system subscribers by mobile operators.
Kalle Ahmavaara, Henry Haverinen, and Roman Pichna, Nokia Corporation, FinlandSecurity Aspects of 3G-WLAN Interworking
3G cellular systems will provide wide coverage and nearly universal roaming, but will not realistically live up to the bit rate expectations placed on them. On the other hand, WLAN systems already offer bit rates surpassing those of 3G systems, but are often found lacking with respect to roaming and mobility support.
Geir M. Køien and Thomas Haslestad, Telenor R&D, NorwayDesign and Implementation of a WLAN/CDMA2000 Interworking Architecture
The combination of 3G and WLAN wireless technologies offers the possibility of achieving anywhere, anytime Internet access, bringing benefits to both end users and service providers. In this article the authors discuss interworking architectures for providing integrated service capability across widely deployed 3G CDMA2000- based and 802.11-based networks.
Milind M. Buddhikot, Girish Chandranmenon, Seungjae Han, Yui-Wah Lee, Scott Miller, and Luca Salgarelli, Bell Laboratories, Lucent TechnologiesEfficient Mobility Management for Vertical Handoff between
WWAN and WLAN
As we move toward next-generation all-IP wireless networks, we are facing the integration of heterogeneous networks, such as WWAN and WLAN, where vertical handoff is required. In vertical handoff between WWAN and WLAN, mobile hosts should be able to move freely across different networks while satisfying QoS requirements for a variety of applications.
Qian Zhang, Chuanxiong Guo, Zihua Guo, and Wenwu Zhu, Wireless and Networking Group, Microsoft Research AsiaSeamless Handover in Terrestrial Radio Access Networks: A Case Study
Next-generation networks will overlay heterogeneous networking technologies. In order to enable seamless communications in such an environment, providing support for efficient handover between the various access technologies will play a crucial role.
John Williams Floroiu, Reinhard Ruppelt, and Dorgham Sisalem, Fraunhofer FOKUS; Jerome Voglimacci Stephanopoli, Bouygues TelecomPolicy-Based QoS Management Architecture in an Integrated UMTS and WLAN Environment
Strong demands for public wireless broadband services will require more capacity than what can be supplied by even advanced mobile cellular systems such as the Universal Mobile Telecommunication System. The increasing popularity of WLANs has prompted mobile network operators to consider their deployment in high- density usage areas such as indoor/outdoor public hotspots to provide complementary broadband access to their UMTS networks.
Wei Zhuang, Yung-Sze Gan, Kok-Jeng Loh, and Kee-Chaing Chua, Siemens Singapore
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Topics in In-Home Networking: Multiple Applications in the Home |
| Dave Marples and Stan Moyer |
Ubiquitous Computing in Home Networks
In the past decade, there have been numerous efforts in ubiquitous computing. For home networks, the authors believe that ubiquitous computing requires a global-scale system that is securable, administered by multiple independent nonspecialist administrators, and integrates off-the-shelf hardware and software.
Henning Schulzrinne, Xiaotao Wu, and Stylianos Sidiroglou, Columbia University
Stefan Berger, IBM Research, Columbia UniversityCompatibility Issues between Services Supporting Networked Appliances
In the near future general household appliances, such as televisions, refrigerators, alarm clocks, stoves, and even lights, will be supplemented with a network interface connecting them to the Internet. Homes are being equipped with such networked appliances to allow a more convenient way of living. Such extensive automatic control of appliances leads to the concept of the smart home. Behind such automation, there is a lot of software controlling the appliances. This software, often referred to as services, applications, or bundles, is supplied by a range of service provider businesses.
Mario Kolberg, Evan H. Magill, and Michael Wilson, University of Stirling
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Also in this issue |
Supporting Real-Time IP Multimedia Services in UMTS
UMTS, the successor of GSM, is evolving toward a future wireless all-IP network. In this article we explain how it will support real-time IP multimedia services, as these services are expected to drive the adoption of wireless all-IP networks. We not only focus on the centerpiece of IP multimedia support, the IP multimedia subsystem, but also include the GPRS transport capabilities and OSA middleware capabilities. This helps to explain how the IMS fits in with, and builds upon, other pieces of the UMTS network. We analyze the pros and cons of providing IP multimedia session control capabilities as opposed to just providing basic IP connectivity, and highlight selected features of the IMS design for discussion.
K. Daniel Wong and Vijay K. Varma, Telcordia Technologies
