Research Article
Improving Energy Efficiency of Multimedia Content Dissemination by Adaptive Clustering and D2D Multicast
Algorithm 2
The iterative algorithm for intracluster D2D multicast transmission powers.
| | Run at any DCH (e.g., k) | | | Input: the MCU with the worst channel condition (e.g., u), Nu, γth, , ε, and | | | Output: or | | (1) | Initialize pout,k as “0” | | (2) | Initialize D2D multicast transmission powers of the members in Iout,k as “0” | | (3) | Compute Fout,u according to formula (9) | | (4) | Compute according to formula (8) | | (5) | If and then | | (6) | Notify the members in Iout,k of at its maximum transmission power | | (7) | | | (8) | Else if then return Else return End if | | (9) | End if | | (10) | Set the timer tΔ as Δ | | (11) | while the timer tΔ does not expire do | | (12) | If receive D2D multicast transmission powers from the members in Iout,kthen | | (13) | Update D2D multicast transmission powers of the members in Iout,k | | (14) | End if | | (15) | End while | | (16) | Go to 3 |
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