|
|
| |
A Comprehensive Study of Power-Efficient
Rendezvous Schemes for Wireless Sensor Networks
En-Yi Lin,
2005 PhD Thesis
Advisor: Jan Rabaey
Abstract:
Recently, advances in integrated
circuit technology enabled the realization of
wireless sensor networks. Wireless sensor nodes are characterized by their
limited power
resources. Given typical sensor network traffic loads, one of the most effective
ways
to minimize power consumption is to power off nodes as much as possible. With
this
approach, it is necessary to arrange simultaneous on-time for nodes to
communicate, a
method referred to as a rendezvous
scheme.
This research proposes and analyzes three major categories of rendezvous
schemes,
and compares their performances. The chosen performance evaluation metrics
include
both power efficiency and latency, which are the two most important factors in
wireless
sensor networks. The rendezvous schemes are compared against one another in
different
network scenarios, namely, different traffic loads, data packet sizes, network
densities,
channel fading conditions, and with different transceivers. The results identify
different
network environment as the most appropriate scenario for different categories of
schemes
to operate in. In short, this research incorporates the physical layer and upper
layer influences
on rendezvous schemes to provide a general guideline on which rendezvous scheme
to select for different sensor network scenarios.

| |
|
|