| T12
- Wireless Access Networks |
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Speakers
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Jamshid
Khun-Jush, Ericsson Research, Corporate Unit,
Germany
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Duration
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1/2
Day
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Start
Time
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14h00 |
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Abstract
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Increasing
demand for wireless access to modern information
devices combined with the emergence of data-intensive
multimedia applications (web browsing, email, games,
audio/video streaming, etc.) has triggered the development
of a variety of wireless access networks (WAN) addressing
different application scenarios.
These networks comprise:
- Wireless Local Area Network (WLAN) offering users
of laptops high-speed Internet and remote LAN connections
in very low-mobility indoor environments as offices,
homes and other hotspots.
- Wireless Personal Area Network (WPAN) aiming at
replacing the wires used to connect electronic devices
in the personal application arena such as personal
computers and printers or mobile phones and headsets.
- Fixed WAN providing users in residential environments
and small to medium enterprises with wide-area access
to high quality multimedia/Internet services.
This tutorial provides an overview on these networks
and the technologies developed or currently being
developed in Europe, the US and Japan, such as 802.11,
HiperLAN2, 802.15, HiperACCESS, etc. The emphasis
is on application scenarios, the available spectrum
and co-existence matters, radio-interface design
and radio network aspects. Furthermore, the latest
standardization activities in different standards
bodies will be addressed. Following topics will
be covered:
- Access network topology
- Protocol stack
- Physical layer (e.g. OFDM, single carrier, orthogonal
signaling)
- Medium access control (MAC) layer
- Data link control (DLC) and error recovery
- Radio network management functions (e.g. handover,
link adaptation, dynamic frequency selection and
power control).
- Coexistence of different systems operating in
the same band
- Interworking and Integration with wide-area mobile
cellular networks.
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Short
Biography of the Speaker(s):
Jamshid Khun-Jush received the B.Sc. degree from the Sharif
University of Technology in Tehran, Iran in 1978, and the Dipl.-Ing.
and Dr.-Ing. degrees from the Technical University of Darmstadt,
Germany in 1989 and 1995, respectively, all in electrical engineering.
Since 1996, he has been with Ericsson Eurolab in Nuremberg, Germany,
primarily engaged in research and development of broadband radio-access
systems. He is currently an Ericsson Senior Specialist in Wireless
LANs. He chaired the physical-layer specification work of the
HIPERLAN type 2 standard within the ETSI Project BRAN (Broadband
Radio Access Networks). In addition, he has chaired the BRAN project
since May 1999. He played a key role in the co-operation between
ETSI-BRAN Project, the IEEE 802.11 Working Group and the Japanese
Standardization Community MMAC, which resulted in closely aligned
specifications for a global 5GHz radio for wireless broadband
local access applications. He is an Advisory Board member of the
Wiley Journal on "Wireless Communications and Mobile Computing"
and an Editorial Board member of the International "Journal of
Communications and Networks".
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