27-08-2014, 03:41 PM
Broadcasting Delay for Critical Event Monitoring In Wireless Sensor Networks: Comparative Study On Project Report
[attachment=67182]
Abstract
Wireless sensor network have used in many
applications like forest fire detection, earth monitoring, air
monitoring etc. When a critical event happen in the
monitoring area it is find out by a sensor node. The
broadcasting delay is the important problem for critical event
monitoring. In this paper, we have discussed about the sleep
scheduling methods and presented the comparative study. In
future we are going to propose an effective sleeping scheme
could decrease the delay of broadcasting.
INTRODUCTION
A Wireless Sensor Network (WSN) includes base station
and a number of small wireless sensor nodes. The base
station is assumed to be secure with unlimited accessible
strength while the sensor nodes [1] are assumed to be
unsecured with restricted available energy.
Applications in WSN:
Area monitoring
Area monitoring is an ordinary application of WSNs. In
area monitoring, the WSN is deployed over a region where
a few phenomenon is to be monitored. A military example
is the use of sensors find out enemy intrusion.
Environmental/Earth monitoring
The term Environmental Sensor Networks has developed
to cover large in number applications of WSNs to earth
science research. This includes sensing volcanoes, oceans,
glaciers, forests, etc.
Forest fire detection
A network of Sensor Nodes can be established in a forest
to discover when a fire has started. The nodes can be fit out
with sensors to measure temperature, humidity and gases
which are produced by fire in the trees or vegetation.
Natural disaster prevention
Wireless sensor networks can powerful act to obstruct
the consequences of natural disasters, like floods
CRITICAL EVENT MONITORING
Critical event monitoring is the important issue in the
WSN. Event monitoring [14] is the process of collecting,
analyzing, and signaling event occurrences to subscribers
such as operating system process, active databases.
Event monitoring construct use of a logical bus to
transport event occurrences from sources to subscribers,
where event sources signal event occurrences to all event
subscribers and event subscribers receive event occurrences
[9].
When a critical event happen in the monitoring area like
gas leak or fire it is find out by a sensor node, an alarm
needs to be broadcast[10] to other nodes as soon as
possible.
2.1 Broadcasting Delay
Broadcasting delay is an important problem for the
application of the critical event monitoring.
The Broadcasting delay terms [12] are as follows,
Event detection
The information make by an application is encoded so
that the stream that is input into the communication channel
complies with a specific pattern or condition.
The receiver checks the stream coming out the
communication channel [5] to see whether the pattern is
agreed.
SLEEP SCHEDULING METHODS FOR CRITICAL EVENT MONITORING IN WSN
Sensor nodes for event monitoring are expected to work
for a long time without recharging their batteries; sleep
scheduling could induce transmission delay because sender
nodes should wait until receiver nodes are active and ready
to receive the message.
A) Delay-Efficient Approaches for Sleep Scheduling In
Wireless Sensor Networks
Arul Xavier V. M, Angelin Jeyaseeli D [3] described to
extend the network lifetime, some sleep scheduling
techniques always used, which may cause communication
delay in large scale WSNs. The Code Division Multiple
Access (CDMA) scheme also offers collision free access to
the medium. However, the high computational complexity
is the limitation in the lower energy consumption needs of
the sensor network.
The proposed scheduling scheme should contain two
parts:
a) Establish the two traffic paths in the WSN
b) Calculate the wake-up parameters for all nodes to handle
all possible traffics.
B) Delay Efficient Sleep Scheduling in Wireless Sensor
Networks
Gang Lu, Narayanan Sadagopan, Bhaskar
Krishnamachari, Ashish Goel [6] have proposed this paper
to address a more general and harder version of this
problem: how should the activity of sensor radio nodes be
scheduled in arbitrary network communication topologies,
in order to minimize the sleep latency while providing
energy efficiency through periodic sleep? This is clearly an
issue of fundamental significance in the area of wireless
sensor networks, and to their knowledge has never been
investigated before. Unlike prior work in this area, which
has focused primarily on designing new sensor network
MAC protocols in an intuitive manner, we shall take an
algorithmi
RESULTS AND DISSCUSSIONS
The following comparison table [15] considers the
important limitations of the sleep scheduling methods for
critical event monitoring in WSN.
The characteristics of existing sleep scheduling methods
such as,
Platform
Limitation
Future work
The outcome of the above characteristics precedes the
improper communication latency, so we are proposed an
effective sleeping scheme could decrease the delay of
alarm broadcasting
CONCLUSION
In sleep scheduling methods there are a set of important
issues, which include the broadcasting delay, issues of
critical event monitoring and others. But the most
important issue is the broadcasting delay, it include variety
of terms such as, Event detection, Network topology, Slot
and duty cycle.This paper analyzes the importance of broadcasting
delay to critical event monitoring in WSN. We compared
three methods namely Delay-Efficient Approaches For
Sleep Scheduling In Wireless Sensor Networks, Delay
Efficient Sleep Scheduling in Wireless Sensor Networks,
Towards Optimal Sleep Scheduling in Sensor Networks for
Rare-Event Detection. These are compared based on two
characters; limitations and future work.
[attachment=67182]
Abstract
Wireless sensor network have used in many
applications like forest fire detection, earth monitoring, air
monitoring etc. When a critical event happen in the
monitoring area it is find out by a sensor node. The
broadcasting delay is the important problem for critical event
monitoring. In this paper, we have discussed about the sleep
scheduling methods and presented the comparative study. In
future we are going to propose an effective sleeping scheme
could decrease the delay of broadcasting.
INTRODUCTION
A Wireless Sensor Network (WSN) includes base station
and a number of small wireless sensor nodes. The base
station is assumed to be secure with unlimited accessible
strength while the sensor nodes [1] are assumed to be
unsecured with restricted available energy.
Applications in WSN:
Area monitoring
Area monitoring is an ordinary application of WSNs. In
area monitoring, the WSN is deployed over a region where
a few phenomenon is to be monitored. A military example
is the use of sensors find out enemy intrusion.
Environmental/Earth monitoring
The term Environmental Sensor Networks has developed
to cover large in number applications of WSNs to earth
science research. This includes sensing volcanoes, oceans,
glaciers, forests, etc.
Forest fire detection
A network of Sensor Nodes can be established in a forest
to discover when a fire has started. The nodes can be fit out
with sensors to measure temperature, humidity and gases
which are produced by fire in the trees or vegetation.
Natural disaster prevention
Wireless sensor networks can powerful act to obstruct
the consequences of natural disasters, like floods
CRITICAL EVENT MONITORING
Critical event monitoring is the important issue in the
WSN. Event monitoring [14] is the process of collecting,
analyzing, and signaling event occurrences to subscribers
such as operating system process, active databases.
Event monitoring construct use of a logical bus to
transport event occurrences from sources to subscribers,
where event sources signal event occurrences to all event
subscribers and event subscribers receive event occurrences
[9].
When a critical event happen in the monitoring area like
gas leak or fire it is find out by a sensor node, an alarm
needs to be broadcast[10] to other nodes as soon as
possible.
2.1 Broadcasting Delay
Broadcasting delay is an important problem for the
application of the critical event monitoring.
The Broadcasting delay terms [12] are as follows,
Event detection
The information make by an application is encoded so
that the stream that is input into the communication channel
complies with a specific pattern or condition.
The receiver checks the stream coming out the
communication channel [5] to see whether the pattern is
agreed.
SLEEP SCHEDULING METHODS FOR CRITICAL EVENT MONITORING IN WSN
Sensor nodes for event monitoring are expected to work
for a long time without recharging their batteries; sleep
scheduling could induce transmission delay because sender
nodes should wait until receiver nodes are active and ready
to receive the message.
A) Delay-Efficient Approaches for Sleep Scheduling In
Wireless Sensor Networks
Arul Xavier V. M, Angelin Jeyaseeli D [3] described to
extend the network lifetime, some sleep scheduling
techniques always used, which may cause communication
delay in large scale WSNs. The Code Division Multiple
Access (CDMA) scheme also offers collision free access to
the medium. However, the high computational complexity
is the limitation in the lower energy consumption needs of
the sensor network.
The proposed scheduling scheme should contain two
parts:
a) Establish the two traffic paths in the WSN
b) Calculate the wake-up parameters for all nodes to handle
all possible traffics.
B) Delay Efficient Sleep Scheduling in Wireless Sensor
Networks
Gang Lu, Narayanan Sadagopan, Bhaskar
Krishnamachari, Ashish Goel [6] have proposed this paper
to address a more general and harder version of this
problem: how should the activity of sensor radio nodes be
scheduled in arbitrary network communication topologies,
in order to minimize the sleep latency while providing
energy efficiency through periodic sleep? This is clearly an
issue of fundamental significance in the area of wireless
sensor networks, and to their knowledge has never been
investigated before. Unlike prior work in this area, which
has focused primarily on designing new sensor network
MAC protocols in an intuitive manner, we shall take an
algorithmi
RESULTS AND DISSCUSSIONS
The following comparison table [15] considers the
important limitations of the sleep scheduling methods for
critical event monitoring in WSN.
The characteristics of existing sleep scheduling methods
such as,
Platform
Limitation
Future work
The outcome of the above characteristics precedes the
improper communication latency, so we are proposed an
effective sleeping scheme could decrease the delay of
alarm broadcasting
CONCLUSION
In sleep scheduling methods there are a set of important
issues, which include the broadcasting delay, issues of
critical event monitoring and others. But the most
important issue is the broadcasting delay, it include variety
of terms such as, Event detection, Network topology, Slot
and duty cycle.This paper analyzes the importance of broadcasting
delay to critical event monitoring in WSN. We compared
three methods namely Delay-Efficient Approaches For
Sleep Scheduling In Wireless Sensor Networks, Delay
Efficient Sleep Scheduling in Wireless Sensor Networks,
Towards Optimal Sleep Scheduling in Sensor Networks for
Rare-Event Detection. These are compared based on two
characters; limitations and future work.