Sensor Networks’ Integration - Application and Multidisciplinary Aspects of Wireless Sensor Networks - page 87

Table 5.1 (continued)

SenseWeb GSN e-SENSE Urban USN Cobis

Centralized
broker,
web
services

Sensors as
service,
container
infrastructure
or virtual
sensors,
stream
processing

Service
enabler
and GW,
IMS-based

High level
framework

Service enabler
and GW,
IMS-based

SoA-based
enterprise
system
integration,
Distributed
middleware

Centralized
broker

Distributed
peer

Centralized
broker,
pub-sub

Unkown Centralized

broker

SoA
middleware

Unknown XML-based

description,
key-value
predicates

XML-based
description

Unkown XML-based

(SensorML)

XML-based
(CoBIL)

Yes, unified
webs
service
interface

Yes, by the
help of
wrappers

Yes Yes Yes Yes

Medium-high,
provides
metadata-
based
selection

Will depend
on how
services
are located

XML-based
queries,
depending
on knowledge
base in SE

Unkown XML-based

queries

XML-based
queries

High as
completely
distributed

Medium, data
flows
through
centralized
broker

Medium-high,
depending
on support
infrastructure

Medium, data
have to go
through SE

Unkown Medium,

centralized
SE in
data path

Query,
streaming,
event-
based

Query,
streaming,
event-
based

Query, streaming,
event-based

Unkown Query,

event-
based,
streaming

Query, event-
based,
streaming

Medium Low Medium-high,

broker
provides
matching

Limited,
Mediation
in terms
of
network
enforcement
points

Medium-
high

Depending on
the tools

Yes Medium Yes, lacks

semantic
query
process

No, currently
only
concept

Yes Yes