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The Near-Me Area Network (NAN)
Presenting By,Manu Augustine
EC-S7NO:34
INTRODUCTION
The Internet employs many different types of communication networks such as,
• LAN [LOCAL AREA NETWORK]• MAN [METROPOLITIAN AREA NETWORK]• WAN [WIDE AREA NETWORK]• PAN [PERSONAL AREA NETWORK]
What is NAN ?Due to the increasing popularity of location-enabled
mobile devices, a new type of communication network is
emerging — the near-me area network (NAN).
“ NAN is a logical communication network built
on the top of existing physical network
infrastructures that focuses on communication
among wireless devices in close proximity. ”
In LANs, the devices are in the same network segment and share the same broadcast domain
The devices in a NAN can belong to different proprietary network infrastructures
TYPES OF NAN
Closed NAN Formed between devices in
the same mobile carrier network.
GPS is not necessary. Location is identified using
triangulating process. Carrier need to maintain the
database of locations. Advantages are limited.
Global NAN Formed among any wireless
device. The device need to have
both GPS locator and internet connectivity.
The location is updated to a central server in the internet.
Number of NAN application can be developed.
THE EMERGENCE OF NAN
A mother lost her son and she sends out his picture to the other people in
the NAN network so that they can help him.
Although other methods can achieve the tasks just listed, NAN
applications are by far the most efficient.
NAN FORMATION
System Architecture : The network formed of those devices
with both a GPS receiver and internet connection
EXISTING PROTOTYPES AND APPLICATION
WhosHere : (http://myRete.com/WhosHere.html).
Loopt : (www.loopt.com).
Handshake: (http://myRete.com/WhosHere.html)
Fire Eagle : The central server.
WhozThat : Facilitating mobile social networks.
Whoshere
helps users meet people nearby with similar interests.
Features
• WhosHere shows the user the closest people who match your interests
• users can text message each other within WhosHere itself
• this NAN service eliminates the need to give out phone numbers,email or IP addresses
loopt
Loopt lets users to see where and how far their friends are on a detailed map
Features
• Loopt will regularly update its own location to the server.
• consulting the server, users can see where and how far away their friends are
• users see their friends on a detailed map, get alerts when friends are nearby
Yahoo’s Fire Eagle: the Central SERVER
Fire eagle is an online central server that stores the current location of the users
Features
• Devoloped by yahoo.com• Stores location info of users• App’s that use location info and social network
websites can access this information
How Fire Eagle Works?
whozthat
WhozThat facilitate mobile social networking
Features
• integrates online social networks like facebook and myspace with mobile devices
• provide information about the friends and people around the user
• mobile devices must possess both local wireless capability (Bluetooth or Wi-Fi) and a wide area wireless connection to the Internet.
Context aware music juke box functioning on WhozThat
• jukebox running WhozThat can receive the social network IDs
• the jukebox can build song playlists that reflect those users’ preferences.
Context aware music juke box functioning
on WhozThat
Challenges for future nan application
Representing a place.
Identifying a position.
NAN Enabled devices.
Implementation issues.
Privacy consideration.
Representing a place
• latitude/longitude pair can define a precise point on earth.
• more appropriate to use more abstract concepts to express locations
• Need to represent place name vocabularies and must integrate it with the Web architecture
• Not all name’s of places are stored, especially in urban areas
Identifying a position
• GPS accuracy is affected by the environmental conditions
• noise or interference near the receiver can create an error
• Presence of physical objects can block sight from satelite
NAN Enabled devices
• mobile devices that are both location- and Internet-enabled must be common
• Availabilty and cost of devices must be affordable
Implementation issues
• software platform must provide the corresponding APIs to build NAN application
• application-programming interfaces for different platforms need to comminicate with no error
ADVANTAGES AND DRAW BACKS
ADVANTAGES
Make Social life eaiser
communication among wireless devices in different
network infrastructures.
NAN applications are more advantageous over current
location based services.
focuses on two way communication among people
within certain proximity.
DEMERITS
• Availability and cost of NAN capable devices• Accuracy of gps may vary according to signal• GPS is not well implemented in urban areas• Privacy considerations
CONCLUSION
Considering the fact that the rapid development of mobile broadband technologies, mobile devices that are both location- and Internet-enabled will likely become widely prevalent in the near to mid term, which will positively boost NAN applications’ popularity. Many exciting opportunities exist for the future design of NAN applications, which could become new modes of location-enabled mobile devices.
Further devolopment in the feild of NAN can be of great use for the human life
references
Angus K.Y.Wong , “ The Near-Me Area Network”,
IEEE Internet Computing, vol.14,no. 2,march-april
2010, pp:74-77.
www.wikipedia.org
THANK YOU