ANSWER: Adaptive Network Selection in WLAN/UMTS Environment
Date Issued
2006
Date
2006
Author(s)
Chi, Wei-Chieh
DOI
en-US
Abstract
The objective of next generation wireless network is to provide users with anywhere, any-
time connectivity, high bandwidth and novel data service. People demanding for this kind
of service cause cellular network provider to consider the integration of 3G cellular systems
and wireless LAN, since WLAN has the advantages of high data rates and unlicensed spec-
trum. Therefore, network selection technique plays a vital role in ensuring quality of service
in heterogeneous networks. To improve system performance, we propose a novel network
selection algorithm that guarantees making o® to the other access network is pro‾table,
which means mobile users is always-best-connected(ABC).
In our selection approach, in order to decide the optimum network for mobile users,
available bandwidths of all usable networks are estimated. User's location, moving direction
is used to avoid frequent hando®s. This new approach is aimed at improving performances
with regard to total throughput/goodput and number of hando®s which deteriorates service
quality in mobile host's life time. We evaluate the performance of our scheme via simulations
and the results agree with our goals.
Subjects
無線網路
網路選擇
全球行動通訊系統
UMTS
WLAN
network selection
heterogeneous
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-95-R93922052-1.pdf
Size
23.31 KB
Format
Adobe PDF
Checksum
(MD5):068373e65b75e820a393bad28ed4d21a