Paper #:[5.2 Mobile] 22
Title:  "MobiEyes: Distributed Processing of Continuously Moving Queries on
Moving Objects in a Mobile System" by Bugra Gedik and Ling Liu

PROBLEM

Previous research on location monitoring focused on a central monitoring
system for handling continuous spatial queries.  Consequently, these
approaches have not been scalable because all of the calculations occur at
the server.  Therefore, with the increasing number of mobile communication
devices, this is not a feasible solution.  Consequently, a method is needed
to decentralize the current approach or in other words move some of the
calculations away from the server to mobile communication devices.

NEW IDEAS AND STRENGTHS

*The authors created a system called MobiEyes which moves some of the query
processing to the moving objects while the server is a mediator between
moving objects.  In other words, the server lets the objects know when
significant changes in position have occurred for either the focal object
or other objects in the area.
*A strength of this approach is that the object can determine whether or
not it should be included in a query, instead of the server querying over
all devices available.
*In order to conserve resources, data is not sent to all base stations but
is sent to the smallest number that will cover the monitoring region.


WEAKNESSES AND EXTENSIONS

*While the concept of minimizing the load on the server by communicating
with the server when "significant change" has occurred is a good concept.
I would have liked to have seen more concrete details as to what merits a
significant change.
*One weakness in the approach is that power consumption in MobiEyes due to
communication is worst than a central approach when a large number of
queries are run.