07-06-2012, 04:57 PM
i-CAMS : a Mobile Communication Tool using
Location Information and Schedule Information
i-CAMS.doc (Size: 489.5 KB / Downloads: 0)
Abstract:
We have developed a communication support system that estimates the situation of a person using schedule information and location information provided by a PHS (Personal Handy Phone System). From the lessons provided by our prior studies and inventions, we developed a new mobile communication tool for cellular phones that uses location information and schedule information. This is a kind of dynamic telephone book, which we have named “iCAMS”. We performed user studies for eight weeks in Tokyo with a group of students and with a group of small-office workers. By analyzing the communication logs, questionnaires and interviews we conducted with the users, we evaluated our system.
Introduction:
The spread of cellular phones, email, and mobile computers has freed us from the restrictions of time and place. Although we spend every day enjoying the merits that these tools bring, new problems have arisen. Today, there is a wide range of technologies, access methods, and devices for communication. People often have several phone numbers and several email addresses, and switch among them according to their situation. Because the modes of communication have become so varied, it is difficult to make appropriate use of these various media and addresses when sending messages to people who use all these modes of communication. Even if message is delivered, the addressee might not read or listen to it. In a mobile environment in particular, it is difficult to know where a person is, and what media he (or) she is using or can be contacted by, since it can change hour by hour. Although cellular phones and email free us from the restrictions of time and place, they takeaway the context of communication that fixed times and places provided.
The system architecture of iCAMS:
To obtain location information on each user, our system posts a cgi message for every fifteen minutes to a map database service on the WWW called "Imadoko Mapion "[10]. Together with this service, we can utilize the location detection service of PHS that NTT DoCoMo offers through the WWW (Figure 3). This performs localization through the cell phone network, with a precision of the location detected of within about 100m. When a cgi message with the telephone number of the PHS and the password is posted, "Imadoko Mapion" returns a HTML file that contains the location information of the PHS on a map (Figure 3). The user is then able to obtain the location name, the longitude and latitude where the PHS carrier is, from the HTML file which has been returned. The detected location information for each user is stored to the table for location in our database.
Conclusion:
We developed a new mobile communication tool for cellular phones that uses location information and schedule information using the lessons learned from our prior invention, which sorts the member list and the address list in the cellular phone. We conducted user studies for eight weeks in order to evaluate this system. We are planning to develop a new system from the lessons we’ve learned, one for a cellular phone built in a GPS and a Java virtual machine.
