Seminario su wireless networks

[Giuseppe Bianchi < >]

A tutti gli interessati,

Un relativamente giovane ma validissimo collega 
mezzo Koreano mezzo statunitense, Sunghyun Choi, 
sara' qui da noi per un seminario il 15 aprile 
giovedi', ore 12.30, in aula R3sso il 
dipartimento di ingegneria elettronica piano 
terra pre. Sunghyun e' uno tra i massimi esperti 
di reti wireless in area locale e metropolitana, 
ed e' stato parte in causa nella 
standardizzazione di wifi. E ove foste ancora 
scettici sulla sua "statura scientifica", guardate il CV riportato a seguire.

Ovviamente tutti gli interessati sono benvenuti. 
Per gli studenti di frs_bis, l'invito e' 
principalmente rivolto agli studenti dello SCORSO 
anno se non altro perche' hanno un minimo di basi 
per seguire, ma magari anche qualche nuovo 
studente con un minimo di competenze autodidatte 
in reti wireless a pacchetto (es. wifi) puo' 
essere interessato (e comunque al peggio, anche 
se vi mancasse qualche background, tentar non nuoce).

Il seminario e' in lingua inglese (ma dai?!)

Vi aspetto numerosi! GB


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Title: QoS-Aware Load Indicators for Intelligent Cell Selection

Speaker: Prof. Sunghyun Choi (Seoul National University, Seoul, Korea)

Abstract:

­Load balancing in cellular networks is an important
technique to mitigate the imbalanced usage of network-wide
air-resources. Specifically, the load information notified by the
network to users over the air, i.e., load indicator, helps a user
intelligently select a base station (BS) by considering the network
load along with the channel quality information obtained by its
own local measurement. Our key argument is that the load
indicator should be more detailed than the overall resource
occupancy ratio since the air resources in packet-based cellular
systems are shared differently among heterogeneous traffic flows
depending on their distinct quality-of-service (QoS) requirements.
Accordingly, we propose QoS-aware load indicators when traffic
flows with and without throughput constraints are mixed. Then,
we discuss three BS selection algorithms, which are devised based
on the proposed QoS-aware load indicators. Simulation results
show that our proposed schemes indeed achieve more intelligent
BS selections.

Short Bio:

Sunghyun Choi is currently a visiting associate 
professor at the Electrical Engineering 
department, Stanford University, USA, and an 
associate professor at the School of Electrical 
Engineering, Seoul National University (SNU), 
Seoul, Korea. Before joining SNU in September 
2002, he was with Philips Research USA, 
Briarcliff Manor, New York, USA as a Senior 
Member Research Staff and a project leader for 
three years. He received his B.S. (summa cum 
laude) and M.S. degrees in electrical engineering 
from Korea Advanced Institute of Science and 
Technology (KAIST) in 1992 and 1994, 
respectively, and received Ph.D. at the 
Department of Electrical Engineering and Computer 
Science, The University of Michigan, Ann Arbor in September, 1999.

His current research interests are in the area of 
wireless/mobile networks with emphasis on 
wireless LAN/MAN/PAN, next-generation mobile 
networks, mesh networks, cognitive radios, 
resource management, data link layer protocols, 
and cross-layer approaches. He 
authored/coauthored over 140 technical papers and 
book chapters in the areas of wireless/mobile 
networks and communications. He has co-authored 
(with B. G. Lee) a book "Broadband Wireless 
Access and Local Networks: Mobile WiMAX and 
WiFi," Artech House, 2008. He holds 19 US 
patents, 10 European patents, and 11 Korea 
patents, and has tens of patents pending. He has 
served as a General Co-Chair of COMSWARE 2008, 
and a Technical Program Committee Co-Chair of ACM 
Multimedia 2007, IEEE WoWMoM 2007 and 
IEEE/Create-Net COMSWARE 2007. He was a Co-Chair 
of Cross-Layer Designs and Protocols Symposium in 
IWCMC 2006, 2007, and 2008, the workshop co-chair 
of WILLOPAN 2006, the General Chair of ACM WMASH 
2005, and a Technical Program Co-Chair for ACM 
WMASH 2004. He has also served on program and 
organization committees of numerous leading 
wireless and networking conferences including 
IEEE INFOCOM, IEEE SECON, IEEE MASS, and IEEE 
WoWMoM. He is also serving on the editorial 
boards of IEEE Transactions on Mobile Computing, 
IEEE Wireless Communications, ACM SIGMOBILE 
Mobile Computing and Communications Review 
(MC2R), Journal of Communications and Networks 
(JCN), Computer Networks, and Computer 
Communications. He has served as a guest editor 
for IEEE Journal on Selected Areas in 
Communications (JSAC), IEEE Wireless 
Communications, Pervasive and Mobile Computing 
(PMC), ACM Wireless Networks (WINET), Wireless 
Personal Communications (WPC), and Wireless 
Communications and Mobile Computing (WCMC). He 
gave a tutorial on IEEE 802.11 in ACM MobiCom 
2004 and IEEE ICC 2005. From 2000 to 2007, he was 
a voting member of IEEE 802.11 WLAN Working Group.

He has received a number of awards including the 
Young Scientist Award awarded by the President of 
Korea (2008); IEEK/IEEE Joint Award for Young IT 
Engineer (2007); the Outstanding Research Award 
(2008) and the Best Teaching Award (2006) both 
from the College of Engineering, Seoul National 
University; the Best Paper Award from IEEE WoWMoM 
2008; and Recognition of Service Award (2005, 
2007) from ACM. Dr. Choi was a recipient of the 
Korea Foundation for Advanced Studies (KFAS) 
Scholarship and the Korean Government Overseas 
Scholarship during 1997-1999 and 1994-1997, 
respectively. He is a senior member of IEEE, and 
a member of ACM, KICS, IEEK, KIISE.