Yu-Yuan Hsu

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Considerable literature on wireless network localization has assumed that each wireless station has a spherical radio range. This assumption, however, is generally untenable because wireless signals are subject to physical propagation of electromagnetic waves. In consequence, radio signals become irregular, making position assessment liable to errors. As a(More)
This paper proposes an architecture integrated with P-mail Deluxe Protocol (PDX) and Multimedia Message Service (MMS) to provide the Interoperability of the multimedia messaging between Personal Handy System and General Packer Radio Service (GPRS) networks. The proposed architecture includes an MMS-P-mail Gateway (MPG), within three messaging services(More)
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