Research on Integration of Internet/WWW and Wireless Communication Architectures (2nd year)
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Under the wireless communication
architecture, users can make a connection with World Wide Web by using wireless
device and get information at any time in any place. However, a variety of
information on Internet often makes users waste a lot of time on searching or
browsing. Further, the wireless device itself has limited computation,
bandwidth, and power. Hence such complex operations have to be restricted. This
project will continue the one of last year, which considers the Web as the major
source of information under wireless communication architecture. In this
project, we will study the approaches of searching information, locating users,
and presenting information to promote the performance of such integration. The
project will proceed in the following three steps:
In the project of last year, we
use proxy server of the Web to reduce the scale and scope of our system, where
all users in the same area can get and share information through the same proxy
server. Further, we provide an information filtering service to let users
specify their requests in the form of queries, which are stored and called
profiles. Information shown in the same area will be automatically passed to
users according to the profiles. Therefore, it is not necessary for users to
spend too much time on browsing web pages. Users can easily get the information
they need. In one hand, the costs for network transfer can be reduced; in the
other hand, the device power can also be saved.
This project will configure an
environment for experiment to discover the properties of the indexing methods
proposed in the project of last year. Because of the user mobility, we also have
to design a transfer protocol, which is combined with the information about user
locations in order to disseminate the filtered results. Thus we can provide
users the newest information and save the device power.
As the rapid development of
wireless technology, personalized communication service has been realized. In
the wireless environment, geographical area can be considered as cells and users
can roam through these cells without limit. To reuse the bandwidth and save the
device power, current researches all consider the development of micro-cell
system. The major problem in a micro-cell system is the update and management of
address data. This project will propose an effective scheme of mobility
management to reduce the costs of registration and location tracking. The major
feature of our scheme is to make use of user profiles, which record the all
activities of users including moves, calls, and duration times. According to the
profiles, we can discover the hot spots of user movements. Location tracking
depends on a distributed profile server to generate a region sequence for
searching. The search within a region depends on the region server.