WSN Network architecture Sensor Network Scenarios- tamil скачать в хорошем качестве

WSN Network architecture Sensor Network Scenarios- tamil

Basic scenarios in Wireless Sensor Networks 1. Types of sources and sinks 2. Single-hop versus multihop networks 3. Multiple sinks and sources 4. Three types of mobility (Node mobility, Sink mobility & Event mobility) 1. Types of sources and sinks • Sources: Any node that provides data/measurements or the actual nodes that sense data. • Nodes where information is generated • Sinks: Nodes where information is required • These sinks sometimes are part of the sensor network itself . • Sometimes “outside” the network (e.G. The firefighter’s PDA communicating with a WSN). • Is part of an external network (e.G., Internet), somehow connected to the WSN • The sink is not interested in the detection of parameters like source node; • In sink data itself is much more important. Source Sink Inte rnetSink Source Sink Source 7. 2.Single-hop vs. multi-hop networks • The simple, direct communication between source and sink is not always possible, specifically in WSNs, • Which are intended to cover a lot of area/ground (Exp. In environmental or agri- culture applications) or • That operate in difficult radio environments with strong attenuation (exp. In buildings). • One common problem: limited range of wireless communication • Essentially due to limited transmission power, path loss, obstacles 8. Multi-hop Networks • Option: multi-hop networks • Send packets to an intermediate node & Intermediate node forwards packet to its destination • Multi hopping is an evident and working solution to overcome problems with large distances or obstacles, • It has also been claimed to improve the energy efficiency of communication. • Great care should be taken when applying multihopping with the end of improved energy efficiency. • It should be pointed out that only multihop networks operating in a store and forward fashion are considered here. In such a network, a node has to correctly receive a packet before it can forward it somewhere. Source Sink Obstacle 9. 3.Multiple Sinks, Multiple Sources • In many cases, there are multiple sources and multiple sinks present. • In the most challenging case, multiple sources should send information to multiple sinks, • where either all or some of the information has to reach all or some of the sinks. 10. 4.Three Types of Mobility • In the scenarios discussed above, all nodes were stationary. • But one of the main features of wireless communication is its ability to support mobile nodes. 1. Node mobility 2. Sink mobility 3. Event mobility 11. Node mobility • The wireless sensor nodes themselves can be mobile. • The meaning of such mobility is application dependent. • Examples like environmental control, node mobility should not happen • The network has to reorganize frequently enough to be able to function correctly. • It is clear that there are trade-offs between the frequency and speed of node movement on the one hand • The energy required to maintain a desired level of functionality in the network on the other hand. 12. WSN Sink Mobility Request Movement direction Propagation of answers EC8702 AD HOC AND WIRELESS SENSOR NETWORKS Unit-1 Youtube Difference between cellular and mobile adhoc network-English    • Difference Between Cellular Network and Ad...   Difference between cellular and mobile adhoc network-Tamil    • Difference Between Cellular Network and Ad...   AD HOC NETWORKS INTRODUCTION –Part 1 (Tamil)    • AD HOC NETWORKS INTRODUCTION –Part 1 (Tami...   AD HOC NETWORKS INTRODUCTION –Part 1 (English)    • AD HOC NETWORKS INTRODUCTION –Part 1-(EC 8...   Classifications of wireless Adhoc Networks-Part-2 (EC 8702)    • Classifications of wireless Adhoc Networks...   AODV-English    • AODV- Adhoc Ondemand Distance Vector Routi...   Destination Sequenced Distance Vector Routing (DSDV) -MANET Routing Protocol – Proactive (EC8702)    • Destination Sequenced Distance Vector Rout...   UNIT-2 Youtube WSN Network architecture Sensor Network Scenarios- tamil    • WSN Network architecture Sensor Network Sc...   WSN Network architecture Sensor Network Scenarios [English]    • WSN -Network architecture- Sensor Network ...   Transceiver Design Considerations -English    • WSN Network architecture Transceiver Desig...   WSN Network architecture Transceiver Design Considerations [Tamil]    • WSN Network architecture Transceiver Desig...   UNIT-3 MAC Protocols for Wireless Sensor Networks- Part-I Tamil-(EC8702 UNIT-3)    • MAC Protocols for Wireless Sensor Networks...   S-MAC (Sensor- Medium Access Control) Part 2 -Tamil (EC8702-UNIT-3)    • S-MAC (Sensor- Medium Access Control) -Par...   IEEE 802.15.4 MAC Protocol (EC8702-UNIT-3)-Tamil    • IEEE 802.15.4 in WSN -MAC Protocol- (EC870...   V-Unit EC-8702-UNIT V -SENSOR NETWORK PLATFORMS AND TOOLS    • EC-8702-UNIT V -SENSOR NETWORK PLATFORMS A...