Network coding protocols for smart grid
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Network coding protocols for smart grid

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    Network coding protocols for smart grid Network coding protocols for smart grid Presentation Transcript

    • Network Coding Protocols for Smart Grid Communications TEAM- MASTERMINDS
    • STRUCTURE BACKGROUND PROPOSED NETWORK CODING PROTOCOLS COMPARISON RESULTS CONCLUSION 2
    • B A C K G R O U N D • SMART GRIDS • SMART METERS • CURRENTLY USED - MASTER SLAVE SCHEME 3
    • A smart grid is an electricity network based on digital technology that is used to supply electricity to consumers via two-way digital communication. 4
    • There are three main benefits to smart meters: SMART METER More accurate No one has to come to your home to read your meter Better oversight and management of our energy use 5
    • CURRENTLY USED SCHEME The master (in this case, the substation) requests data from each slave (the secondary substation) in a Round Robin fashion. Master sends a data-request packet to the intended slave, followed by a transmission of data from slave If the data is received correctly, the master proceeds to the next slave. Otherwise, the master repeats the process 7
    • GIST • NETWORK CODING • RLNC • TUNABLE SPARSE CODING ONE PHASE ( NC) TWO PHASE ( NC- fb) 8
    • WHY USE NETWORK CODING?? Network coding saves • one transmission (thus saving energy) • one time slot (thus reducing the delay) Structure of the coded packet for the general case. ATypical wireless coding example 9
    • Tunable Sparse Coding There are three key ideas in tunable sparse network coding: 1 • Sparse coding is more beneficial at the beginning of a transmission session 2 • Dense coding is required towards the end of the sessions for fast completion 3 • Sparse coding translates in reduced complexity 11
    • C O M P A R I S O N R E S U L T S 13
    • COMPARISON SETTINGS • NS-2 network simulator • Wireless Setting • Collects one packet of 100 bytes from each sender every 15 min. FIRST EXPERIMENT 14
    • 15 • BS and the secondary substations are positioned within a rectangle of 3300 m per 2500m. Around each substation, we add 32 households
    • (a) Average percentage of collected packets (c)Average collection time 16
    • • Topology shown in fig (a) fitting in a rectangle of 1000 m per 1400 m. • 32 households are distributed uniformly at random within an annulus around each secondary substation, but with a minimum radius of 10 m and a maximum radius of 100 m. The remaining conditions are similar to the 1st experiment. SECOND EXPERIMENT 17
    • (b)Average percentage of collected packets. (c) Average collection time. 18
    • With network coding, the data packets are collected much sooner than the defined deadline. Compared with the MS reference protocol, the protocols discussed here exhibited a threefold (without explicit feedback) to tenfold (with explicit feedback) improvement in the collection time. 19