Most information service today considers about location-based service or time service. However, it has more factors that make system achieve more efficient service. In this paper, we propose the relationship of time, place, purpose, preference and short time history. The three factors which time, place and purpose are mutually dependent which we have summarized the basic rules to analyze essent...

A system to provide non-realtime short message transmission service to a wide-area of users via Low Earth Orbit (LEO) micro-satellite is developed. To increase the system capacity, a novel and efficient slotted quasi-synchronous CDMA access protocol is specially designed to deal with the serious Doppler shift and propagation delay variation. Before each message burst transmission, the user will...

Global System for Mobile (GSM) is a second generation cellular standard developed to cater voice services and data delivery using digital modulation. Short Message Service (SMS) is the text communication service component of mobile communication systems, using standardized communications protocols that allow the exchange of short text messages between mobile phone devices. SMS framework allows ...

In view of the bad environment and intermittent communication UAV network, based on short message function Beidou satellite navigation system, which can provide all-weather no blind area service, a network identity authentication protocol under emergency state when conventional means cannot communicate is designed.

Short message service (SMS) has been a very important tool in mobile communication for years, and the usage is still growing. The difficulty in editing messages on handset devices can be overcome by sending SMS messages through Internet-connected gateways. Furthermore, we can adopt such mechanisms to integrate mobile-computing ability to many existing information systems. However, it’s easy to ...

This paper compares two possible scenarios for mobile Internet surfing according to the Personalised Access to Local Information and services for tOurists (PALIO) Project (IST-1999-20656). In particular, we consider WAP phones with Short Message Service (SMS) and Personal Digital Assistants (PDA) with General Packet Radio Service (GPRS). Suitable round robin scheduling schemes are analyzed for ...

Quote of the Day Protocol This RFC specifies a standard for the ARPA Internet community. Hosts on the ARPA Internet that choose to implement a Quote of the Day Protocol are expected to adopt and implement this standard. A useful debugging and measurement tool is a quote of the day service. A quote of the day service simply sends a short message without regard to the input. One quote of the day ...

virtual learning is a new idea that has gotten a new form with the emergence of new technologies such as the wireless networks. the mobile phone (cell phone) is a device that is used by most people nowadays. therefore, one can use the mobile phone for virtual learning on a wide scale. one of the popular and at the same time simple and inexpensive services on the mobile phone is the sms (short m...