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INTELLIGENT AUTO TIME ADJUSTMEN? FOR TELECOMMUNICATION PRODUCTS WITH ROAMING FEATURE

IP.com Disclosure Number: IPCOM000009054D
Original Publication Date: 1999-Jan-01
Included in the Prior Art Database: 2002-Aug-05
Document File: 2 page(s) / 97K

Publishing Venue

Motorola

Related People

Phon Wai Kong: AUTHOR [+3]

Abstract

Telecommunication product with roaming fea- ture can operate over different countries with differ- ent time zones. The time preset for the telecommu- nication product, be a pager or cellular phone, has to be changed when you cross to a different time zone. Two current options are available to change the time, either change manually by the user or auto- matically change by the time data received from local service provider. In the first option, the user has to manually change the time and therefore this option is inefficient and troublesome. In the second option, the user is forced to use the standard time available from the service provider and the change is not instantaneous.

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MO-LA Technical Developments

INTELLIGENT AUTO TIME ADJUSTMEN? FOR TELECOMMUNICATION PRODUCTS WITH ROAtilNG FEATURE

by Phon Wai Kong, Chia Huan Seng and Ho Kam Heng

  Telecommunication product with roaming fea- ture can operate over different countries with differ- ent time zones. The time preset for the telecommu- nication product, be a pager or cellular phone, has to be changed when you cross to a different time zone. Two current options are available to change the time, either change manually by the user or auto- matically change by the time data received from local service provider. In the first option, the user has to manually change the time and therefore this option is inefficient and troublesome. In the second option, the user is forced to use the standard time available from the service provider and the change is not instantaneous.

  A new methodology is available be the use of roaming protocol. When a person arrived in a new country, the roaming pager/cellular phone will detect the local frequency and thus obtain the SSID and NID information. Utilizing the information, it is possible to automatically adjust the date and time to the new time zone through software means. The software will use a lookup table to automatically adjust the time difference between the residing country and the originated country.

  The description of this methodology is illustrat- ed by the software flow chart below. When the per- son arrived in a new country, the frequency scan-

ning process started. SSID and NID information are obtained and therefor the country of residing is known. Once the country is known, the time offset can be added to the current time to result the new

time. This process is like a lookup table where the output of the table is the time offset and the inputs are SSID and NID information. A lookup table is shown below for illustration purposes.

  This new methodology has a great improvement over the current metho...