# Energy Harvested and Cooperative Enabled Efficient Routing Protocol (EHCRP) for IoT-WBAN
## 9 Conclusions and Future Work  
In this research work, the EHCRP protocol which involves using tiny sensors for proficient selection of the next hop node in WBANs is proposed. Prolonged network lifespan and proficient emergency data delivery within given time constraints are the two major necessities for normal functioning of WBANs. EHCRP tries to achieve both these important goals. The most packets with life-threatening data are listed before the normal data packets during transmission. Also, interference is one of the bottleneck factors that significantly affect WBAN performance. Therefore, in this research work we tried to choose a path for data delivery which is less congested or free for traffic. The achieved results are evaluated by comparison with state-of-the-art routing techniques i.e., E-HARP, EB-MADM, PCRP and EERP. The results shown in the tables and figures in the \"Performance and Evaluation\" section clearly attested to the fact that the proposed protocol outclassed all other contemporary techniques. The E-HARP routing technique was the closest competitor of the proposed scheme in terms of all parameters considered in the \"Performance and Evaluation\" section. The high performance of the proposed scheme is due to smart harvesting system and dropping of redundant data packets from the transmission pool. As a future work, the intention is to extend the proposed work with more WBAN link quality metrics along with authentication security. Thus with an efficient routing link in each situation a patient's data may only be checked by his/her own medical practitioner or caregiver.  
**Author Contributions**: [PERSON], Z.U., [PERSON] ([PERSON]), and M.A. handled the design and development of the proposed algorithm, contributed to the creation of the main ideas in the paper, and handled the writing of the manuscript. [PERSON]. ([PERSON]), [PERSON], [PERSON] and [PERSON] focused on the experimental task (i.e., setting up the  
Figure 11: Breakdown of end-to-end delay.  
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multirow{2}{*}{\
\begin{tabular}{c} **Protocol** \\ **Name** \\ \end{tabular} } & \multicolumn{8}{c}{**End-to-End Delay (ms)**} \\ \cline{2-10}  & **0** & **2500** & **5000** & **7500** & **10,000** & **12,500** & **15,000** & **17,500** & **20,000** \\ \hline
\begin{tabular}{c} EHCRP \\ (Proposed) \\ \end{tabular} & 515 & 470 & 390 & 300 & 210 & 185 & 130 & - & - \\ E-HARP & 515 & 482 & 410 & 321 & 235 & 205 & 160 & - & - \\ PCRP & 480 & 400 & 370 & 350 & 300 & 250 & 180 & 150 & - \\ EERP & 430 & 410 & 390 & 330 & 290 & 260 & 230 & 200 & - \\ EB-MADM & 450 & 410 & 350 & 310 & 280 & 250 & 210 & 190 & - \\ \hline \hline \end{tabular}
\end{table}
Table 8: End-to-End delay vs. time(s).  
system, the design and realization of the experiments). [PERSON]. ([PERSON]), M.A., B.H., and [PERSON] validated the data analysis; [PERSON]. ([PERSON]), M.A., [PERSON] ([PERSON]) offered guidance and supervision; All authors conducted data analysis and interpretation tasks together. All authors have read and agreed to the published version of the manuscript.  
This work and the APC were funded by the King Saud University, Riyadh, Saudi Arabia, through Researchers Supporting Project number RSP-2020/184.  
The authors would like to thank the support provided by King Saud University, Riyadh, Saudi Arabia, through Researchers Supporting Project number RSP-2020/184.  
The authors declare that they have no conflict of interest related to this manuscript.