| description |
Wireless sensor networks can monitor different types of physical
phenomena and are able to provide a diverse set of context data to
interested clients. Allowing mobile pervasive computing devices to
access such data requires solutions for routing messages between
mobile devices and the static sensor network. This paper presents a
novel approach that addresses this problem with the help of symbolic
coordinates. It requires only a small amount of topology information
distributed in the network and allows mobile devices to send
messages to arbitrary areas. The routing task is split among the
client nodes, which specify a symbolic source route, and the sensor
nodes that handle node-to-node routing. The paper describes the
algorithm, specific challenges associated with its design and gives
an extensive evaluation of the approach and its properties, showing
that the use of symbolic coordinates in these environments is a
viable alternative to more traditional types of routing.
|