By Topic

Network controlled adaptive antenna tilting in multi-band UMTS FDD

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
R. Abou-Jaoude ; SIEMENS Mobile, Munich, Germany ; Jijun Luo ; M. Dillinger ; E. Mohyeldin
more authors

This work proposes an adaptive antenna tilting approach in an overlay UMTS FDD network. The purpose is to introduce and investigate an antenna element, which can be remotely controlled by the radio network, in order to adequately cater for the spatial and temporal dynamic traffic distributions. The tilting angle is computed by a two level control mechanism: the higher level is controlled by the network manager and consists of a look-up table with the possible ranges (intervals or discrete steps for angles) of the antenna angle adjustments. The element manager, e.g. RNC controlling and recording the track of the dynamic antenna changes, controls the lower level. To enhance the system reliability, we associate the less dynamic traffic with the primary fixed tilt antenna, whereas the more varying traffic is controlled by a second more dynamically tilted antenna element. Through system level simulations, we show that significant gains in term of system capacity can be obtained. In addition, solutions involving the network management subsystem in UMTS FDD are also given, where the element management platform interacts with the performance measurement units. Intelligent inter-frequency handovers are deliberately discussed.

Published in:

Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on  (Volume:4 )

Date of Conference:

5-8 Sept. 2004