1. Network Coding
Protocols for Smart Grid
Communications
TEAM- MASTERMINDS

2. STRUCTURE
BACKGROUND
PROPOSED NETWORK CODING
PROTOCOLS
COMPARISON RESULTS
CONCLUSION
2

3. B A C K G R O U N D
• SMART GRIDS
• SMART METERS
• CURRENTLY USED - MASTER SLAVE SCHEME
3

4. 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

5. 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
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7. 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
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8. GIST
• NETWORK CODING
• RLNC
• TUNABLE SPARSE
CODING
ONE PHASE ( NC)
TWO PHASE ( NC- fb)
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9. 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

11. 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
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13. C O M P A R I S O N R E S U L T S
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14. COMPARISON SETTINGS
• NS-2 network simulator
• Wireless Setting
• Collects one packet of 100 bytes
from each sender every 15 min.
FIRST EXPERIMENT
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15. 15
• BS and the secondary
substations are positioned within
a rectangle of 3300 m
per 2500m. Around each substation,
we add 32 households

16. (a) Average percentage of collected packets (c)Average collection time
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17. • 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
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18. (b)Average percentage of collected packets. (c) Average collection time.
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19. 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.
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