TAILIEUCHUNG - Điện thoại di động mạng lưới Radio P16

The Future is Wireless A Typical Day in the Year 2000 Joe Mobilus is a manager with a haulage firm in a city 100 km away from his home town; his wife Sue is a nurse at the local hospital. Their son Tom and daughter Ann are still at school. 06:30 The central alarm system wakes Joe and Sue in line with their weekly schedule. 07:00 Joe uses his TETRA terminal to access his firm’s central computer to see if there have been any changes to his diary. 07:15 Joe leaves his house and using his cellular phone in the. | Mobile Radio Networks Networking and Protocols. Bernhard H. Walke Copyright 1999 John Wiley Sons Ltd ISBNs 0-471-97595-8 Hardback 0-470-84193-1 Electronic 16 The Future is Wireless A Typical Day in the Year 2000 Joe Mobilus is a manager with a haulage firm in a city 100 km away from his home town his wife Sue is a nurse at the local hospital. Their son Tom and daughter Ann are still at school. 06 30 The central alarm system wakes Joe and Sue in line with their weekly schedule. 07 00 Joe uses his TETRA terminal to access his firm s central computer to see if there have been any changes to his diary. 07 15 Joe leaves his house and using his cellular phone in the car calls the traffic service to find out about current traffic conditions. 07 30 Tom who is finishing school this year and wants to become a stockbroker calls up a stock market service on the Internet to have the share prices from New York conveyed over satellite. Then together with his sister he leaves to go to school. The Mobilus household is linked to the PSTN ISDN over an RLL system. 08 00 Sue s cordless DECT telephone rings while Sue is in the bath. Her mother informs her that she has to postpone the joint dinner that was planned for that evening. 08 10 Sue informs Joe accordingly over a pager or the GSM short-message service. 08 15 Joe s car breaks down as he is driving to work. He activates the automatic emergency service for his car to call for help with a puncture. To do so he uses a TETRA service or GSM-SMS. 08 20 Because Joe is not sure whether he will make it to the office on time he sends his secretary an e-mail from his mobile data terminal with the message that she should change his 9 o clock appointment to a later time. This message is served by GPRS a non-transparent GSM data service. 806 16 The Future is Wireless 10 00 Joe has arrived in his office where he receives a message that a client s warehouse flooded because of heavy rain during the night and that the goods being delivered .

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