point
Menu
Browse by year:
The Smart Techie was renamed Siliconindia India Edition starting Feb 2012 to continue the nearly two decade track record of excellence of our US edition.

Mobile Location Intelligence

Shankar Narayanan
Tuesday, December 1, 2009
Shankar Narayanan
Looking back at 1999, the annual production of mobiles was less than 200 million worldwide; MP3 was yet to be launched, no Smartphones. Just take a look at today’s mobile market. Wow! What a growth in 10 years? This year’s production target for mobiles is above 1.5 billion. There are six different Smartphone operating systems (Windows Mobile, Symbian, Black Berry, iPhone, Palm, and Android). The following are becoming the de facto standards in some form in the mobile phones: MP3, FM radio, voice recorder, bluetooth, 10 mega-pixel camera, HD video, WiFi, digital TV, mobile computing, social networking, mobile e-commerce, mobile credit card (m-commerce?), and now Location Intelligence with GPS, Cell Id, WiFi, and so on. No other market has seen such a tremendous growth in the last 10 years like the mobile market.

So, let me cover the latest and the next big revolution expected in the mobile market: ‘Location Intelligence’ (LI). What is LI? Gathering the relevant and desired information around one’s location or any other preferred location, processing that information on the basis of personal preferences, context, and geography and delivering it at an appropriate time can be defined as LI. We need basic map data of any geography with extensive layers of information (global, continental, country and even street level, and finally at the door number level of the target location) to achieve this. Further, information on POI (Points of Interests) and any dynamic data such as traffic, weather, events, and offers could be all labeled as Location Intelligence. All the geo information have to be coded into latitude and longitude (Lat/Long) coordinates, so that you can reverse geo-code by giving Lat/Long coordinates and get the actual address or position of the place or person you look for. Global Positioning System (GPS), which is a U.S. military term generally used by every one, helps us pinpoint the position of a place or person easily.

Now, let’s quickly see how does GPS work and then move on to various technologies, applications, and current and future market opportunities. A GPS device basically has a RF modem and antenna that picks up signals from the satellites (there are about 16 satellites that orbit the earth and send signals that are picked up by all the GPS devices around the world ? in a way similar to radio signals that are picked up by FM/AM receivers). Any one is free to receive signals from these satellites that are owned by the U.S. government. These satellites send their current position in the orbit with respect to earth. The GPS devices get the positions of various satellites in orbit. Using the information about the position of at least three satellites, the GPS device calculates its position on earth, based on a method called ‘triangulation’. Thus, we are able to identify one’s precise position on earth using the GPS device.

Now let’s go back to map data. Currently companies like Navteq (a Nokia company) and Tele Atlas (a Tom Tom company) are the major map data providers, even Google gets the map data from these people. This map data is not in a form that can be used by a common man or a consumer. The maps provided by the map data vendor are in a particular format and have to be rendered by the Map Engine, so that it is compiled in a form that can be read by a common man. ‘Map Engine’ is a complex software owned only by a handful of companies such as Nokia, Google, Yahoo, Microsoft, deCarta, Spime, Navngo, and some others. The Map Engine has the routing engine incorporated in it, which computes the routing functions from point A to B to C and is used for simple textual navigation. Then comes the Navigation Engine, which can be part of the Map Engine or be independent of it. The Navigation Engine primarily does the turn-by-turn navigation, so that even if you miss a turn it re-computes and provides you the alternate routing with the help of the routing engine.

There are three types of Map Engines: Off-board, On-board, and Hybrid. Internet companies such as Google and Yahoo have off-board engines; you can access maps and their functionalities only if you are connected to the Internet. The most popular navigation application offered today by vendors on mobile phones, especially in the U.S., runs on ‘Off-board Engine’, which is slowly becoming obsolete.


Share on Twitter
Share on LinkedIn
Share on facebook
Reader's comments(1)
1:very nice article.
Posted by: sowmya katyayini desu - 19th Dec 2009
Disclaimer
Messages posted on this Web site under the `Comments' area are solely the opinions of those who have posted them and do not necessarily reflect the opinions of Infoconnect Web Technologies India Pvt Ltd or its site www.siliconindia.com. Gossip, mud slinging and malicious attacks on individuals and organizations are strictly prohibited. Infoconnect Web Technologies India Pvt Ltd can not be held responsible for errors or omissions in content, nor for the authenticity of the user/company name or email addresses associated with posted messages. Infoconnect Web Technologies India Pvt Ltd reserves the right to edit or remove messages containing inappropriate language or any other material that could be construed as libelous, potentially libelous, or otherwise offensive or inappropriate.Infoconnect Web Technologies India Pvt Ltd do not endorse the products and services or any other offerings mentioned in these messages.