Thesis (M.S. in Electrical Engineering) Naval Postgraduate School, Dec. 2001. / Thesis advisor: John McEachen. "December 2001." Includes bibliographical references (p. 95). Also available online.

It is more and more popular to transmit and receive information with Wireless LAN(WLAN) as the time of science and technology has been approaching. Every type of business gradually has priority on WLAN for marketing. Especially business of agents of real estate, they use WLAN as tool for marketing to improve the service with information and human nature and to break through the shape of traditional human operation. They record characters and functions of surrounding environment of the houses which are entrusted by clients in their system to provide immediate and local information with house-buyer. This becomes personalizing and valuable selling information. It takes both quantitative and qualitative methods as research methods in the study, and agents of real estate using and not using WLAN in Kaohsiung City are picked as research objects. The study takes depth interviews to realize conditions for wireless network marketing using, motivation for wireless network marketing, and using mode for wireless network marketing, and it also analyzes the differences among wireless network marketing, traditional marketing, and internet marketing. Meanwhile the study use questionnaires survey to figure out the reason why some agents of real estate do not use WLAN for marketing. There are four findings in the study as follows: (1) Agents of real estate using WLAN for marketing are mainly direct branches and over 15 years old. (2) The traditional way for marketing used by agents of real estate using or not using WLAN for marketing is newspaper. (3) Agents of real estate using WLAN for marketing know the requirements of clients and can improve the quality of service better then agents of real estate not using WLAN for marketing. (4) The rate of agents of real estate not using WLAN for marketing at present would like to use WLAN for marketing in the future become more. The conclusion of the study indicates the marketing mode of using new science technology can inquire new information anytime and anywhere. The mode of marketing with WLAN provides business of agents of real estate with the immediate and local information, and this is the point that mass media can not achieve. There are difficulties for business of agents of real estate in Kaohsiung City to use high science technology as a kind of marketing mode. Kaohsiung City should try to upgrade M capacity step by step and take both traditional marketing and WLAN marketing to enhance the function of WLAN for marketing in business of agents of real estate.

Mobile handset manufacturers have begun to include wireless LAN (WLAN) interfaces in their cellular handsets. This allows users to access WLAN networks when they are available and to revert to conventional cellular communications otherwise. In this way the handset can dynamically use the "best" available network, by switching connections between the two network interfaces. This switching is referred to as a vertical handoff (VHO). When handling real-time connections, handsets must be capable of performing a seamless vertical handoff. This occurs when the interface switching does not disrupt the quality of service requirements of the active connections. Vertical handoffs are generally time consuming, and this delay creates a difficult problem since WLAN coverage can be lost very abruptly. In this thesis, we propose and investigate several methods of mitigating this problem. A solution based on using a Vertical Handoff Support Node (VHSN) is proposed. When the WLAN link is lost, the VHSN is able to quickly redirect packets through the local cellular base-station during the time that handoff is taking place. This approach can eliminate VHO link loss. It is shown that the act of WLAN-to-cellular handoff can result in a severe bandwidth deficit problem on the WLAN. A novel bandwidth reservation and securing mechanism is proposed which overcomes this problem and performs significantly better than schemes based on modified versions of the static guard channel scheme used in cellular networks. The work is characterized by simulation and analytic models which investigate the key performance aspects of this type of system. / Thesis / Doctor of Philosophy (PhD)

ITC/USA 2006 Conference Proceedings / The Forty-Second Annual International Telemetering Conference and Technical Exhibition / October 23-26, 2006 / Town and Country Resort & Convention Center, San Diego, California / The Central Test and Evaluation Investment Program (CTEIP) Integrated Network Enhanced Telemetry (iNET) program is currently testing a wireless local area networking (WLAN) in an L-band telemetry (TM) channel to evaluate the feasibility and capabilities of enhancing traditional TM methods in a seamless wide area network (WAN). Several advantages of networking are real-time command and control of instrumentation formats, quick-look acquisition, data retransmission and recovery (gapless TM) and test point real-time verification. These networking functions, and all others, need to be tested and evaluated. The iNET team is developing a WLAN based on 802.x technologies to test the feasibility of the enhanced telemetry implementation for flight testing.