Showing posts with label LBS. Show all posts
Showing posts with label LBS. Show all posts

Friday, December 3, 2010

Effect of Data Traffic Explosion on Mobile LBS

These days it is hard to go to any mobile conference without hearing someone talking about the pending explosion of data traffic volume brought on by the dawn of the Internet video age.  If you haven't tuned into the latest yet, GigaOM has a nice recap on the latest Cisco traffic study.  Is there a correlation between this onslaught of data volume and mobile LBS?  You bet.  Read on.

A key issue in mobile LBS is location accuracy and positioning duration.  Today, a mobile location is typically estimated from either GPS signals or cell towers.  GPS is well suited for high-accuracy LBS applications such as car navigation.  But the consumer applications of GPS have long been hindered by technology limitations such as long signal acquisition time and limited signal coverage.  The recent boom of mobile LBS has largely been fueled by cell-based positioning technologies.  Unlike GPS coverage, cell locations are not only much quicker to obtain but also 100% available both outdoors and indoors.  The accuracy of a cell location depends on the cell size.  The smaller the cell-size, the more accurate the cell-derived location.  This where the looming data explosion will benefit LBS.

A two-part series, titled "The Network Paradox: Meeting the Mobile Data Demand", quoted industry sources as saying that the only way to increase mobile data capacity by more than 9X is to deploy 4 or more times of cell sites.  These new cell sites will lead to at least 2 times reduction of the overall cell size according to cellular traffic engineering rules.

So, mobile LBS will see its better days ahead.

Wednesday, September 1, 2010

Will GloPos dethrone GPS?

I don't know why GloPos wants to stake its claims against GPS.  But the short answer to the question in the title is: unlikely.  I will give 4 reasons here:
  1. Wireless emergency services can not use GloPos.  Wireless operators worldwide however must deploy control plane positioning technology and/or GPS to support positioning during emergency calls. 
  2. User plane positioning technology has converged on the SUPL standard.  SUPL enabled handsets and location servers have been commercially available since 2008.  Almost every A-GPS capable smartphone on the market today is equipped with a SUPL stack.  A SUPL server is capable of network-based positioning based on single-cell and multi-cell NMR (Network Measurement Report), which is the same principled technology used by GloPos.  When both wireless operators and OEMs world-wide are investing in SUPL, GloPos will have a tough time to market a competing technology.
  3. NMR positioning is not newTruePosition and Cambridge Positioning Systems were two of the early marketers of this technology 10 years ago.  Their accuracy, confidence and deployment cost claims are even better than those from GloPos if you simply compare their marketing brochures.  GloPos however has not provided any driving test results.
  4. GloPos data cost is too high.  Each positioning session in GloPos requires at least 100Kb data to be transferred, according to this article.  In-car navigation needs a typical 5-second refresh rate.  Thus a 30-minute drive will generate over 4.3MB of data traffic just for positioning alone! 
GloPos seems to have rebranded themselves an "indoor positioning" technology provider since I checked them last September.  But it is interesting that GloPos has now included Google in their competitor category.  Is Google indoor location truly not as accurate as GloPos?  Has any real user noticed a material difference?  Celluar indoor positioning is a hardly a match to short-range radio indoor positioning.  But is GloPos encroaching on SkyHook's turf?