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Evaluation of Grouping Strategies for an Hierarchical SDMA/TDMA Scheduling Process
Hoymann, Christian and Ellenbeck, Jan and Pabst, Ralf and Schinnenburg, Marc
Department of Communication Networks (ComNets), Faculty 6, RWTH Aachen University Kontakt: Christian Hoymann
In Proceedings of the IEEE International Conference on Communications 2007, p. 6, Glasgow, UK, 2007.
Publication Date: Jun, 2007
On page(s):6
ISBN: 1-4244-0353-7
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Modern wireless communication systems, such as
the metropolitan area network IEEE 802.16, provide means
to support smart antenna techniques. Applying beamforming
techniques, adaptive antennas are able to increase cell capacity
by reducing inter-cell interference and by allowing concurrent
transmissions. However, smart antennas are only beneficial,
if the system is able to leverage the advantages, e.g, spatial
separability of stations. Additionally, the system has to cope
with the disadvantages, e.g., intra-cell interference as well as
increased scheduling complexity. The scheduler is one of the most
important modules of such systems, since it allocates the radio
resources to subscriber stations. Thus, it controls the medium
access in the space- and time- (and maybe frequency- and code-)
domain. In order to reduce the complexity and to improve the
flexibility of a SDMA/TDMA scheduler, the scheduling process
can be subdivided into two parts, namely the spatial grouping
and the group scheduling. First, the process of grouping separates
the subscribers into spatial groups. Second, the group scheduling
allocates resources of the time domain to the spatial groups.
This paper focuses on the first step of the hierarchical
SDMA/TDMA scheduling process, i.e., the spatial grouping. It
outlines different grouping strategies and it analyses their complexity.
Finally, the paper evaluates their grouping performance.
With respect to complexity and performance, a grouping strategy
is recommended for wireless networks capable of SDMA.
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@INPROCEEDINGS{hoyJkePabMsg_icc07,
AUTHOR = {Hoymann, C. and Ellenbeck, J. and Pabst, R. and Schinnenburg, M.},
TITLE = {Evaluation of Grouping Strategies for an Hierarchical SDMA/TDMA
Scheduling Process},
YEAR = {2007},
MONTH = {Jun},
PAGES = {6},
ADDRESS = {Glasgow, UK},
BOOKTITLE = {Proceedings of the IEEE International Conference on Communications 2007},
AFFILIATION = {Department of Communication Networks (ComNets), Faculty 6, RWTH Aachen University},
ISBN = {1-4244-0353-7},
ANNOTE = {SDMA, scheduling, wimax},
URL = {http://www.comnets.rwth-aachen.de}
}
Signature in CN-Library = {Qi 022 (2007)}
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| | Letzte Änderung: 17.09.2008 11.46 | |
