Algorithm Part 1 (for 20 Marks):
- The available Device to Device (D2D) pairs should be sharded (cluster) based on the
application, Public Safety and Commercial Applications. For Sharding, any clustering
algorithm can be considered.
- A shard may contain any number of D2D Pairs.
- Each shard should have at least one Cellular User (CU).
- Display the shard members.
Figure 1. Sharding Example
Algorithm Part 2 (for 20 Marks):
Based on the shardes created in Part 1, carry out the communication considering the following
- Assume there are N D2D pairs (D2DN
) in a shard where N ranges from 1 ,…., N.
(assume public safety shard for the experiment). The D2D pairs start communication in
regular intervals i.e, the D2D1 pair starts data transfer at 2 second, the D2D2 pair starts
data transfer at 3 second, the D2D3 pair starts data transfer at 4 seconds etc.
Sl.No Seconds Active D2D Pairs
1 2 D2D1
2 3 D2D1 D2D2
3 4 D2D1 D2D2 D2D3
4 5 D2D1 D2D2 D2D3 D2D4
….. …… …….
p q D2D1 …………., D2DN
- Assume the default attribute values for both D2D and CU in the experiment.
- Calculate the SINR of each D2D pair according to the following table.
Sl.No Seconds Active D2D Pairs SINR @ The Destination
1 2.5 D2D1 D2D1_SINR
2 3.5 D2D1 D2D2 D2D1_SINR
3 4.5 D2D1 D2D2 D2D3 D2D1_SINR
4 5.5 D2D1 D2D2 D2D3 D2D4 …..
….. …… ……. …..
p q D2D1 …………., D2DN …..
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