Transmission of IPv6 Packets over Wireless Body Area Networks (WBANs) drafu-sajjad-6lo-wban-00 Expires: December 15, 2017 Muhammad Sajjad Akbar Bournemouth University, England R. Bin Rais Ajman University, AR. Sangi Individual Contributor M. Zhang Huawei Technologies C. Perkins Futurewei IETF 99, Prague
Current status • Informatjonal • Intent to make it standard track • Suggestjons and feedback is required
Wireless Body Area Networks • Wireless Body Area Networks (WBANs) intend to facilitate use cases related to medical fjeld. • IEEE 802.15.6 standardize in 2012 and defjnes PHY and MAC layer and is designed to deal with betuer penetratjon through the human tjssue without creatjng any damage to human tjssues with the approved MICS (Medical Implant Communicatjon Service) band by USA Federal Communicatjons Commission (FCC).
Need • WBAN is RF based wireless networking technology that interconnects tjny nodes with sensors in, on, or around a human body. • On demand, Emergency and Normal traffjc • A typical WBAN consists of a number of inexpensive, lightweight, miniature sensor platgorms, each featuring one or more physiological sensors like – Motjon Sensors – ECG (Electrocardiograms) – Sp02 – Breathing Sensors – Blood pressure – EMG (Electromyograms) – EEG(Electro-encephalograms) – Blood Glucose Sensors
IEEE 802.15.6 Wireless Body Area Networks • Scope: Standard for short range, wireless communicatjon in the vicinity of, or inside, a human body (but not limited to humans) – Uses existjng ISM bands and/or bands approved by natjonal medical and/or regulatory authoritjes – Supports QoS, extremely low power, & data rates up to 10 Mbps – Complies with strict non-interference guidelines where needed – Considers efgects on portable antennas due to the presence of a person (varying with male, female, skinny, heavy, etc.) – Meets Specifjc Absorbed Radiatjon Limits
Channel model and Superframe • The channel model will include body efgects. – Specifjc Absorptjon Rate (SAR), health efgects – Body shadowing causes severe atuenuatjon at some frequencies – Superframe format The EAP is Emergency Access Period. -> In this period only devices with emergency traffjc can contend. The RAP(Random Access Period) can be used by any device both emergency and non-emergency.
Frequency Bands
Benefjts by using IPv6 solutjon • The number of devices in WBANs makes network auto confjguratjon and statelessness highly desirable. And for this, IPv6 has (default auto-confjguratjon as a) ready solutjons. • The large number of devices poses the need for a large address space, moreover a WBAN may consist of 256 nodes maximum and IPv6 is helpful to solve addressing issues. • Given the limited packet size of WBANs, the IPv6 address format allows subsuming of IEEE 802.15.6 addresses if so desired. • Simple interconnectjvity to other IP networks including the Internet.
Issues • Limited Packet Size Applicatjons within WBANs are expected to originate small packets maximum 256 octet whereas IPv6 MTU requirement
• Questjons
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