| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| Artigo_AntónioPinto_2015 | 3.27 MB | Adobe PDF |
Advisor(s)
Abstract(s)
Real-time monitoring applications may be used in
a wireless sensor network (WSN) and may generate packet flows
with strict quality of service requirements in terms of delay,
jitter, or packet loss. When strict delays are imposed from source
to destination, the packets must be delivered at the destination
within an end-to-end delay (EED) hard limit in order to be
considered useful. Since the WSN nodes are scarce both in
processing and energy resources, it is desirable that they only
transport useful data, as this contributes to enhance the overall
network performance and to improve energy efficiency. In this
paper, we propose a novel cross-layer admission control (CLAC)
mechanism to enhance the network performance and increase
energy efficiency of a WSN, by avoiding the transmission of
potentially useless packets. The CLAC mechanism uses an
estimation technique to preview packets EED, and decides to
forward a packet only if it is expected to meet the EED deadline
defined by the application, dropping it otherwise. The results
obtained show that CLAC enhances the network performance
by increasing the useful packet delivery ratio in high network
loads and improves the energy efficiency in every network load.
Description
Keywords
WSN admission control end-to-end delay estimation