![Internet of Things
6LoWPAN
[Course Code: B17CS4102 ]
Ch.Raghuram
Assistant Professor
Department of Computer Science and Engineering,
SRKR Engineering College, Bhimavaram, AP-534204](https://image.slidesharecdn.com/6lowpan-220519091834-be0c0841/85/6LoWPAN-pptx-1-320.jpg)
More Related Content
6LoWPAN.pptx
- 1. Internet of Things 6LoWPAN [Course Code: B17CS4102 ] Ch.Raghuram Assistant Professor Department of Computer Science and Engineering, SRKR Engineering College, Bhimavaram, AP-534204
- 2. 6LoWPAN 6LoWPAN : Stands for IPv6 over Low Power Wireless Personal Area Networks (6LowPAN) . • Wireless Sensor Networks (WSN) adopts IEEE 802.15.4 standard. • The IETF 6LoWPAN working group plays a significant role in making the use of IPv6 over the standard IEEE 802.15.4 possible. • 6LoWPAN is an upcoming technology that allows connectivity among nodes with limited power by importing IPv6 capabilities into the low-power nodes. • 6LoWPAN provides IP communication capability to nodes in WSN. • The development of 6LoWPAN enables wireless embedded nodes to participate in the Internet of Things.
- 3. 6LoWPAN 6LoWPAN Protocol Stack Architecture: • 6LoWPAN standards enable the efficient use of IPv6 over low power, low rate wireless networks. • An Adaptation Layer was introduced between MAC and the Network Layer.
- 4. 6LoWPAN 6LoWPAN Protocol Stack Architecture: Continued… • The Physical (PHY) layer provides the basic communication capabilities of the medium. • 6LoWPAN PHY layer provides two services namely the PHY data service and PHY management service. • The key function of PHY data services is to provide transmission and reception of data packets between MAC and PHY through the physical radio channel. • The PHY management service interface offers access to every layer management function and maintains a database of information on related personal area networks.
- 5. 6LoWPAN 6LoWPAN Protocol Stack Architecture: Continued… • The PHY data structure is divided into PHY header field and the PHY payload field. • It consists of Synchronisation Header (SHR), PHY Header (PHR) and Physical Service Data Unit (PSDU). • The Data Link layer provides services to enable reliable, single-hop communication links between 6LoWPAN nodes. • The adaptation layer is the main component of 6LoWPAN. The major function of this layer is the TCP/IP header compression.
- 6. 6LoWPAN 6LoWPAN Protocol Stack Architecture: Continued… • The 6LoWPAN network layer provides the internetworking capability to sensor nodes. • The main considerations of this layer are addressing, mapping, and routing protocols. • In 6LoWPAN, being based on the process of packet forwarding, the routing is classified into two schemes such as mesh-under and route-over. • Like the transport layer in OSI model, 6LoWPAN transport layer is responsible for process-to-process delivery. • It delivers data segment to the appropriate application process on the sensor node.
- 7. 6LoWPAN 6LoWPAN Architecture: • In Simple LoWPAN, nodes are connected to the Internet via an Edge Router (ER). • In this topology, a router is randomly configured to act as a simplified ER. • The nodes in 6LoWPAN plays the role of host or router, along with one or more edge routers. • To facilitate efficient network operation, nodes initially make a registration with an edge router.
- 8. 6LoWPAN Header Compression • 6LoWPAN header compression is stateless, and conceptually it is not too complicated. • 6LoWPAN works by taking advantage of shared information known by all nodes from their participation in the local network.
- 9. 6LoWPAN Fragmentation • The term MTU defines the size of the largest protocol data unit that can be passed. • The fragment header utilized by 6LoWPAN is composed of three primary fields: Datagram Size, Datagram Tag, and Datagram Offset. • The 6LoWPAN fragmentation header field itself uses a unique bit value.
- 10. 6LoWPAN Mesh Addressing • 6LoWPAN mesh addressing function is to forward packets over multiple hops. • Three fields are defined for this header: Hop Limit, Source Address, and Destination Address.
- 11. 6LoWPAN Challenges • IP Connectivity • Limited Packet Size • Limited Configuration and Management • Service Discovery and Security consideration • Localization