In the era of Internet of Things (IoT), the recent advancements of information and communication technologies enables deployment of sensor nodes on our human body. Therefore the present health care scenario enables the dynamic and continuous patient health monitoring by configuring small sensors into patients body. Wireless Body Area Networks (WBAN) are one of the special kinds of networks which have been visualized to be a reality in future for remote healthcare diagnosis and patient health monitoring referring the concept of Wireless Sensor Network (WSN). The concept of implementing the pervasive and ubiquitous networks needs proper synchronization in between various heterogeneous networks such as internet, cellular network along with WBAN. The Heterogeneous WBAN networks require a heterogeneous communication system to ensure quality of services with respect to the reliable data transmission and delivery ratio. This proposed study provides an overview of the state of art techniques towards congestion avoidance strategies in WBAN. The study also highlights various congestion control strategies over heterogeneous communication system to ensure the quality of services. The significant contribution if the proposed study is highlighted over research gap which illustrates the existing research issues associated with the WBAN communication systems.

1. Khan, Jamil Y. , and Mehmet R. Yuce. "Wireless body area network (WBAN) for medical applications. " New Developments in Biomedical Engineering. INTECH (2010).
2. Thomas D. Lagkas and George Eleftherakis,"An Overview of Wireless Sensor Networks: Towards the Realization of Cooperative Healthcare and Environmental Monitoring", Copyright © 2014. 23 page.
3. Khan J Y, Yuce MR, Bulger G and Harding B,"Wirless Body Area Netowrk (WBAN) design techniques and performance evaluation", Journal of Med. System 2012, Vol. 6, Pg. no. 1441-57.
4. Darwish A, Hassanien A E, "Wearable and implatable wirless sensor network solutions for healthcare monitoring", Sensors (Basel)-2011, Vol. 11, Pg. no. 5561-95.
5. Khan, J. Y. ; Yuce, M. R. ; Karami, Farbood, "Performance evaluation of a Wireless Body Area sensor network for remote patient monitoring," in Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE, vol. , no. , pp. 1266-1269, 20-25 Aug. 2008.
6. Sana Ullah , Henry Higgins , Bart Braem , Benoit Latre , Chris Blondia , Ingrid Moerman, Shahnaz Saleem , Ziaur Rahman , Kyung Sup Kwak, "A Comprehensive Survey of Wireless Body Area Networks", Journal of Medical Systems, v. 36 n. 3, p. 1065-1094, June 2012
7. Perillo, Mark A. , and Wendi B. Heinzelman. "Wireless sensor network protocols. " Algorithms and Protocols for Wireless and Mobile Networks, Eds. A. Boukerche et al. , CRC Hall Publishers (2004).
8. J. Y. Khan and M. R. Yuce,"Wireless Body Area Network (WBAN) for Medical Applications",New Developments in Biomedical Engineering,Domenico Campolo(Ed),InTech.
9. J. Ahmad and fareeha Zafar,"Review of Body Area Network Technology & Wireless Medical Monitoring"International Journal of Information and communication Technology Research,2012.
10. Khan, Jamil Y. , and Mehmet R. Yuce. "Wireless body area network (WBAN) for medical applications. " New Developments in Biomedical Engineering. INTECH (2010).
11. Thomas D. Lagkas and George Eleftherakis,"An Overview of Wireless Sensor Networks: Towards the Realization of Cooperative Healthcare and Environmental Monitoring", Copyright © 2014. 23 page.
12. Khan J Y, Yuce MR, Bulger G and Harding B,"Wirless Body Area Netowrk (WBAN) design techniques and performance evaluation", Journal of Med. System 2012, Vol. 6, Pg. no. 1441-57.
13. Darwish A, Hassanien A E, "Wearable and implatable wirless sensor network solutions for healthcare monitoring", Sensors (Basel)-2011, Vol. 11, Pg. no. 5561-95.
14. Khan, J. Y. ; Yuce, M. R. ; Karami, Farbood, "Performance evaluation of a Wireless Body Area sensor network for remote patient monitoring," in Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE, vol. , no. , pp. 1266-1269, 20-25 Aug. 2008.
15. Sana Ullah , Henry Higgins , Bart Braem , Benoit Latre , Chris Blondia , Ingrid Moerman, Shahnaz Saleem , Ziaur Rahman , Kyung Sup Kwak, "A Comprehensive Survey of Wireless Body Area Networks", Journal of Medical Systems, v. 36 n. 3, p. 1065-1094, June 2012.
16. Manfredi, Sabato. "Performance Evaluation of Healthcare Monitoring System over Heterogeneous Wireless Networks", E-Health Telecommunication Systems and Networks 1. 03 (2012): 27.
17. S. Brendard, M. Tabassum and HongSiang Chua, "Wireless Body Area Networks channel decongestion algorithm," IT in Asia (CITA), 2015 9th International Conference on, Kota Samarahan, 2015, pp. 1-6.
18. S. Ghanavati, J. Abawaji and D. Izadi, "A Congestion Control Scheme Based on Fuzzy Logic in Wireless Body Area Networks," Network Computing and Applications (NCA), 2015 IEEE 14th International Symposium on, Cambridge, MA, 2015, pp. 235-242.
19. M. T. I. ul Huque, K. S. Munasinghe and A. Jamalipour, "A Probabilistic Energy-Aware Routing Protocol for Wireless Body Area Networks," 2014 IEEE 80th Vehicular Technology Conference (VTC2014-Fall), Vancouver, BC, 2014, pp. 1-5.
20. Y. m. Baek, B. h. Lee, J. Li, Q. Shu, J. h. Han and K. j. Han, "An adaptive rate control for congestion avoidance in wireless body area networks," Cyber-Enabled Distributed Computing and Knowledge Discovery, 2009. CyberC '09. International Conference on, Zhangijajie, 2009, pp. 1-4.
21. F. Chiti, R. Fantacci and S. Lappoli, "Contention Delay Minimization in Wireless Body Sensor Networks: A Game Theoretic Perspective," Global Telecommunications Conference (GLOBECOM 2010), 2010 IEEE, Miami, FL, 2010, pp. 1-6.

Wireless Body Area Networks Healthcare Monitoring Congestion Avoidance Quality Of Services.