Call for Paper - March 2023 Edition
IJCA solicits original research papers for the March 2023 Edition. Last date of manuscript submission is February 20, 2023. Read More

An Adaptive Timeslot Allocation Scheme for Wireless Body Area Networks

International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Year of Publication: 2016
Bindu Bala, Monica Pandey, Devendra Prasad

Bindu Bala, Monica Pandey and Devendra Prasad. Article: An Adaptive Timeslot Allocation Scheme for Wireless Body Area Networks. International Journal of Computer Applications 133(4):31-35, January 2016. Published by Foundation of Computer Science (FCS), NY, USA. BibTeX

	author = {Bindu Bala and Monica Pandey and Devendra Prasad},
	title = {Article: An Adaptive Timeslot Allocation Scheme for Wireless Body Area Networks},
	journal = {International Journal of Computer Applications},
	year = {2016},
	volume = {133},
	number = {4},
	pages = {31-35},
	month = {January},
	note = {Published by Foundation of Computer Science (FCS), NY, USA}


With the rapid growth in specialized biomedical sensors, wireless communication and low power integrated circuits; the wireless sensor network has achieved a new milestone. IEEE 802.15.4 standard uses carrier sense multiple access with collision avoidance (CSMA-CA) medium access mechanism and supports star as well as peer-to-peer topologies. By using superframe structure, time slots can be allocated by the Coordinator to devices with time critical data. In IEEE 802.15.4 due to the low SNR (signal to noise ratio) carrier sensing is not reliable in UWB PHY, the “hidden Terminal problem” arises due to the use of CSMA-based random access control, and due to the presence of only one common contention based access period, the CAP part deprives the priority of life critical medical applications.

To overcome these limitations of IEEE 802.15.4, an adaptive timeslot allocation scheme based on precedence is proposed. In proposed scheme, Data traffic is divided into 2 priority classes and CAP is categorizes into 2 access phases. Collision probability and final throughput are influenced by the performance of CAP. CAP is divided into 2 sub-phases: phase-1, and phase-2. C1 represents first class priority, and C2 represents the second class priority. Second class priority includes both continuous and non continuous data.


  1. Beom Seok Kim and Jinsung Cho,”A Novel Priority-Based Channel Access Algorithm for Contention-based MAC Protocol in WBANs”. Proceedings of the 6th International Conference on Ubiquitous Information Management and Communication (ICUIMC), New York USA, 2012-02-20, pp.1-5.
  2. Sai Anand Gopalan, Dong-Hyun Kim, Jae-Wook Nah, and Jong-Tae Park, “A Survey on Power-Efficient Mac Protocols For Wireless Body Area Network”, Proceedings of IC-BNMT201 0, pp. 1230-1234.
  3. Mounib Khanafer, Mouhcine Guennoun, Hussein T. Mouftah “Priority-Based CCA Periods for Efficient and Reliable Communications in Wireless Sensor Networks “, scientific research, 2012, pp.45-51.
  4. S. A. Desai, P. H. Zope, S. R. Suralkar,” A Review on IEEE 802.15.4- Standard for Wireless Body Network”, International Journal of Innovative Research in Science, Engineering and Technology ,May 2013, pp. 1477-1486.
  5. Nicholas F. Timmons, William G. Scanlon. ” Analysis of the Performance of IEEE 802.15.4 for Medical Sensor Body Area Networking”, Sensor and Ad Hoc Communications and Networks, IEEE SECON, First Annual IEEE Communications Society Conference,  4-7 Oct. 2004, pp no. 16 – 24.


Superframe, backoff, overhearing.