NDLI: Mobility in UMTS packet IP networks

Content Provider	IEEE Xplore Digital Library
Author	Bosch, P. Mullender, S. Samuel, S.
Copyright Year	2006
Description	Author affiliation: Bell Labs., Holmdel, NJ (Bosch, P.; Mullender, S.; Samuel, S.)
Abstract	We have built a research prototype of UMTS access point called a UMTS IP router (UIP). This network element combines the hierarchy of GGSN, SGSN, RNC and NodeB in a single base station. The primary reason for integrating existing network elements into a single system is for performance. The UIP routes IP traffic from IP networks to IP capable UMTS terminals. Future transmission technologies rely on transmission in simplex using hybrid ARQ (H-ARQ). Today's UMTS networks, however, still rely on downlink soft handover and this has led to a hierarchical design. An alternative for the hierarchical design is one that combines the functionality of the typical cellular network elements into one wireless specific IP router. Since downlink diversity is no longer used when H-ARQ comes into play, giving up downlink soft handover does not constitute a performance penalty provided another, equally efficient handover method can be used in our flat cellular network design. In this paper we show that efficient hard handover is possible in a flat architecture and that giving up the hierarchical design allows us to (1) remove unnecessary protocol layers from the UMTS protocol stack; and (2) reduce the end-to-end latency of wireless transmission by abolishing UMTS base station synchronization. While our current prototype does not yet support HSDPA, the penalty for giving up downlink diversity is compensated by the large reductions in transmission delays
Starting Page	545
Ending Page	550
File Size	129930
Page Count	6
File Format	PDF
ISBN	1424402697
ISSN	15253511
e-ISBN	1424402700
DOI	10.1109/WCNC.2006.1683521
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-04-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	3G mobile communication IP networks Downlink Prototypes Land mobile radio cellular systems Wireless application protocol Delay Femtocell networks Telecommunication traffic Automatic repeat request
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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