# An Energy-Efficient Routing Protocol for Reliable Data Transmission in Wireless Body Area Networks
## 6 Conclusions  
In this paper, an energy-efficient routing protocol for reliable data transmission in WBAN is proposed. The protocol dynamically selects the next hop node with good state by constructing a maximum benefit function, which takes multiple parameters into account, such as the residual energy, transmission efficiency, available bandwidth and the hops to sink. At the same time, it dynamically  
Figure 8: Analysis of the reliable transmission of P1 priority data.  
Figure 7: Analysis of energy consumption.  
adjusts the weights of each parameter based on the data priority. It can not only ensure reliable and efficient routing transmission of different priority data, but also balance the energy consumption of the network, improve the energy utilization efficiency of nodes, and ultimately prolong the network lifetime. Compared with the minimum hop-routing protocol PERA and the multi-hop routing protocol NEW-ATTEMPT, the proposed protocol performs well in terms of network throughput, network lifetime, energy efficiency and reliable transmission of emergency data.  
From the perspective of future work, we plan to further optimize the parameter selection in the maximum benefit function to make it more reasonable and perfect. In addition, we will use a better algorithm or simulation to determine the specific value of the weight, and set reasonable weight values for different priority data to satisfy the Qos requirements of different data, thus achieving better network performance.  
[PERSON] contributed to the first draft, chart editing and subsequent revision of the article; [PERSON] contributed to the overall research ideas of the article; [PERSON] contributed to the collection and analysis of data; [PERSON], [PERSON] and [PERSON] contributed to the revision and the final determination of the article.  
This work was supported by the National Natural Science Foundation of China under Grant 61772175, 61801170, 61501405, U1504619; National Thirteen Five Equipment Research Fund under Grant 6140311030207; National Key Research and Development Plan under Grant 2018 YFB0904905; Science and Technology Major Program of Henan Province of China under Grant 161100210900; Program for Science and Technology Innovation Talents in the University of Henan Province(17 HASIT025); Science and Technology Research Project of Henan Province under Grant 182102210285; Postdoctoral Science Foundation of China under Grant 2018M632772, 2018M633351.  
This work was performed under the National Natural Science Foundation of China, National Thirteen Five Equipment Research, National Key Research and Development Plan, Science and Technology Major Program of Henan Province of China, Program for Science and Technology Innovation Talents in the University of Henan Province, Science and Technology Research Project of Henan Province, Postdoctoral Science Foundation of China funded. Henan Key Laboratory for Machinery Design and Transmission System also provided funding to publish the result of this research in an open access journal.  
The authors declare no conflict of interest.