# Adaptive Thermal-Aware Routing Protocol for Wireless Body Area Network
## 3 Proposed Method of ATAR
### ATAR Network Model  
In order to address the problem of temperature rise in WBAN, we have proposed an IOT based adaptive thermal-aware routing protocol by using Multi-path Ring Routing to minimize the temperature rise and less deferral to acquire the stability in data transmission and expanding network life. The proposed scheme introduces a novel way of routing to uniformly disperse the load among sensors nodes in the context of temperature rise. We have explained the details of problems associated with WBAN thermal-aware routing. This study presents a thermal-aware routing protocol for WBANs, which focuses to uniformly diffuse of load among sensors nodes in term of temperature rise. The proposed thermal-aware WBAN routing protocol is known as IOT ATAR. The ATAR addresses the problem of temperature rise and decreased data transmission while increasing network life.  
System Model  
The reliable and quick transmission of data consuming low temperature rise is highly important in WBAN. In some cases, quick response is required on sensed vital signs, e.g., in certain cases if the data is of emergency type like heart stoke related data. The primary objective of this research is to efficiently handle multi-hop communication to improve the overall performance of the network in term of temperature rise and throughput. The WBAN is a diverse network with different types of nodes and the deployment of nodes in/on the body is very important in WBAN to evaluate the performance of routing protocol.Therefore, to evaluate the performance of our proposed protocol have taken 8-12 implanted sensors nodes where the sink node is placed at the center of the human body, as shown in Figure 8.  
Figure 6: Alternative path C for traffic: The red node represents hotspot node that has a high temperature. Whenever the packet will be transferred form Path A and Path B it will backtrack the packet to previous node and communication will continue from the path C.  
Figure 7: Communication halt in Network: Entire communication has become halted and communication will not be forwarded due to the hotspot node.  
The node(s) which are at one-hop count can directly communicate with sink node while distant node(s) can transmit through intermediate nodes (Multi-hop). The assumptions for proposed WBAN routing protocol are listed below:  
* Each sensor node in the network has a fixed position.
* Each sensor node transmits sensed data to sink node, which is placed at the center of the human body. The resources (hardware and software) of the sink are enough for continuous energy supply.
* Each sensor node has static transmission power and transmission range.
* Sink node is the destination for every sensor node.
* Fixed sized packet is transmitted by every sensor node and each node transmits data at its own time slot.
* The location of neighboring is known to each other after the initialization phase.  
The deficiencies in the existing studies are handled in our approaches in the following manner.  
* The data which are critical can be directly sent to the destination using single-hop communication.
* Normal data are forwarded to the destination using multi-hop communication.
* The forwarder node selection depends upon the current status in term of temperature rise.