NDLI: Adaptive and predictive downlink resource management in next generation CDMA networks

Content Provider	IEEE Xplore Digital Library
Author	Xin Wang Ramjee, R. Viswanathan, H.
Copyright Year	2004
Description	Author affiliation: Dept. of Comput. Sci. & Eng., State Univ. of New York, USA (Xin Wang)
Abstract	Guard channels have been proposed to minimize handoff call dropping when mobile hosts move from one cell to another. CDMA systems are power- and interference-limited. Therefore, guard capacity in CDMA networks is soft, that is, a given capacity corresponds to variable number of connections. Thus, it is essential to adjust the guard capacity in response to changes in traffic conditions and user mobility. We propose two schemes for managing downlink CDMA radio resources: guard capacity adaptation based on dropping (GAD), and guard capacity adaptation based on prediction and dropping (GAPD). In both schemes, the guard capacity of a cell is dynamically adjusted so as to maintain the handoff dropping rate at a target level. In the second scheme, there is an additional, frequent adjustment component where guard capacity is adjusted based on soft handoff prediction. We show through extensive simulations that GAD and GAPD control the handoff dropping rate effectively under varying traffic conditions and system parameters. We also find that GAPD is more robust than GAD to temporal traffic variations and changes in control parameters.
Starting Page	2754
Ending Page	2765
File Size	987050
Page Count	12
File Format	PDF
ISBN	0780383559
ISSN	0743166X
DOI	10.1109/INFCOM.2004.1354693
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-03-07
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Downlink Resource management Next generation networking Multiaccess communication Traffic control Interference Telecommunication traffic Radio spectrum management Power system management Robust control
Content Type	Text
Resource Type	Article
Subject	Computer Science Electrical and Electronic Engineering

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