Correlation Associativity b/w Sensor Information Network Architecture & Software Define Wireless...
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Experimental topicCorrelation Associativity
b/w Sensor Information Network Architecture
&Software Define Wireless Network
via MWSN , MANETS , VANETS
Presentation by: Iqra KhalilType/ Mode of presentation:academic
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Software-defined networking (SDN) is an umbrella term encompassing several kinds of network technology aimed at making the network as agile and flexible as the virtualized server and storage infrastructure of the modern data center.
software defined networking (SDN) paradigm promises to simplify network configuration and resource management dramatically.
Software Define Wireless Network
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A centralized approach to network control:
centralized approach to network control raises crucial problems about which network element(s) should run network control operations but makes network optimization easier.
Energy consumption
problem
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SDWN must support duty cycles:The most obvious way to reduce the energy consumption is turning the radio off when it is not utilized, that is, using duty cycles. SDWN must support in-network data aggregation :Energy consumption can be reduced by removingthe redundancy from the data circulating in the network,that is, by using data aggregation techniques.
solution
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Protocol Architecture
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Forwarding layer algorithm
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Mobile wireless sensor networks (MWSNs) can be defined as a wireless sensor network (WSN) in which sensor nodes are mobile. MWSNs are an emerging field of research in contrast to their well establish predecessor.
MWSNs are much more versatile than static sensor networks as they can be deployed in any scenario and cope with rapid topology changes.
Advantages over static wireless network:
1. better energy efficiency 2- improved coverage 3-enhanced target tracking 4- superior channel capacity .
Mobile Wireless Sensor Network(MWSN)
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Problem reference:
WaterGrid: A wireless Sensor Grid for Riverin Water Management by Muhammad Hussain Mughal (2014 IEEE).
Case study
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A wireless ad hoc network (WANET) is a decentralized type of wireless network. The network is ad hoc because it does not rely on a pre existing infrastructure, such as routers in wired networks or access points in managed (infrastructure) wireless networks.
Wireless Ad hoc networks are networks in which communication links are based on wireless technologies and the network structure or topology is not pre-defined rather build through dynamic network connectivity.
Relation with other ad hoc networks:
WANET ⊃WSN , ⊃ (MANETS ⊃ VANETS)
WANET
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A Mobile Ad-hoc network is a wireless ad-hoc network which is used to exchange informtion. A Mobile Ad-hoc network is a wireless ad-hoc network which is used to exchange information .
Mobile Ad Hoc Network is basically a combination of wireless network having no fixed nodes and not a fixed infrastructure. In MANETs, devices can move freely. Nodes within the range of other wireless devices make a virtual infrastructure. Furthermore; there is also not a centralized body to control the communications between nodes.
Form by wireless hosts, which may be mobile. No infrastructure required for the connection. Nodes between hops may continuously contain multiple hops. Nodes acts as routers to forward packets for each other and nodes keep changing the routes
In mobile Ad Hoc Network, nodes connected to each other without any physical connection e.g. coaxial cables or fiber optics cable. All of these are wireless devices and their position is not fixed. They move from one point to another and if any one of them moved away from the range of other nodes then communication between them will also be dropped.
nfrmation.
MANETS
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On wireless computer networks, ad-hoc mode is a method for wireless devices to directly communicate with each other. Operating in ad-hoc mode allows all wireless devices within range of each other to discover and communicate in peer-to-peer fashion without involving central access points (including those built in to broadband wireless routers).
To set up an ad-hoc wireless network, each wireless adapter must be configured for ad-hoc mode versus the alternative infrastructure mode.
What is Ad-Hoc Mode in Wireless Networking?
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Applications: It is use in military environment such as when there is any war
for soldiers to contact with each other MANET is used
Use in civilian environments like in vehicle networks, conferences/stadiums, outside activities etc
It is use in emergency situations like in search-and-rescue operations , in policing and fire fighting etc.
MANETS
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In 2005, northern areas of Pakistan were destructed by a massive attack of earth quake and all the ways of communication had been disconnected. This is only one example of breakdown of communication in Pakistan. The same disasters are occurring all around the world in different forms such as Tornados, Hurricanes and earth quakes and so on. The main issue is that after having these disastrous attacks, one really needs to communicate the people of the affected areas as soon as possible in order to know the amount of destruction and about causalities over there. In that case, one really need a fast way of communication which is more probable reliable and easy to connect.
MANETS:case study
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In that case, we can put our trust on Ad -HOC mobile network which is the only fastest way of communication between different wireless nodes. In MANETs, the initial or the source node pass on information to the next available node and ask about the location of final node. The next available node move on further information to very next node available to it and ask about the final destination. The information is passing on from one node to another back and forth and in this way the source node knows the final destination node location and hence finally communication between two entities going on.
MANETS:case study
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This facilitates querying, monitoring, and tasking of sensor networks.
serves the role of middleware that abstracts a network of sensor nodes as a collection of massively distributed objects.
ITS execution environment provides a set of configuration and communication primitives that enable scalable and energy-efficient organization of and interactions among sensor objects.
On top the execution environment is a programmable substrate that provides mechanisms to create associations and coordinate activities among sensor nodes.
Users then access information within a sensor network using declarative queries, or perform tasks using programming script.
Sensor information Network Architecture
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Model of sensor network and SI network Middleware
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Information Abstraction:
A sensor network is conceptually viewed as a collection of datasheets which are relational.
Sensor Query and Tasking Language (SQLT):
SQTL plays the role of a programming interface between sensor applications and the SINA middleware.
It is a procedural scripting language,designed to be flexible and compact, with a capability to interpret simple declarative query statements.
SI networks:SQLT
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Further capabilities:
1- sensor hardware access (e.g., getTemperature, turnOn)2- Location aware (e.g., isNeighbor, getPosition)3- communication primitives (e.g , tell , execute)
4-Events
receive:
Events generated when a message is received by a sensor node
every
Events triggered periodically by a timer
Expire:
Events caused by the expiration of a timer
SI Network: SQLT
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A sensor execution environment (SEE), running on each sensor node, is responsible for dispatching incoming messages, examining all arrival SQTL messages, and performing the appropriate operation for each type of action specified in the messages.
Sensor Execution Environment
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Complete SQTL code for the coordinated vehicle tracking algorithm.
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Simulation setup
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conclusion