WBAN consist of s set of mobile compact interconnecting sensors. Monitors vital body parameters and movements. Transmit data from human body to home base station. Maximum signal range  2m. Can offer 2 advantages; Mobility and Location independent monitoring.

1. Presented By :
Yogeesh M
M.Tech (DCN)
1DA17LDN008
WBAN & WPAN.
Dr . AMBEDKAR INSTITUTE OF TECHNOLOGY
(An Autonomous Institution, Affiliated to V.T.U)
BANGALORE-560 056
Seminar Presentation
On

2. WBAN : Wireless Body Area Network
• WBAN consist of s set of mobile compact interconnecting sensors.
• Monitors vital body parameters and movements.
• Transmit data from human body to home base station.
• Maximum signal range  2m.
• Can offer 2 advantages;
i. Mobility and
ii. Location independent monitoring.
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3. NETWORK ARCHITECTURE
• WBAN is a Three-tier architecture as shown in fig. 1.2
• Tier 1 consist of,
 Sensor nodes,
 Signal conditioner
 A-D converters,
 Microcontroller,
 Transceiver.
• Tier 2  Personal server, WLAN, Cellular phones with GPS.
• Tier 3  Medical server.
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4. Fig 1.1 : WBAN Architecture
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5. NETWORK COMPONENTS
• WBAN consists of no. of sensor nodes
• WBAN sensor nodes must be of minimal weight , miniature
form factor , low power consumption.
• They can be implemented as tiny patches or incorporated
into clothes or shoes .
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6. WBAN includes the no. of Physiological
sensors:
1. ECG
2. EMG ( Electromyography )
3. EEG sensor for brain electrical activity
4. BP sensor
5. Tilt sensor
6. Breathing sensor
7. Movement sensor
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7. S-MAC  Sensor MAC
• Features of S-MAC protocol includes
 Periodic listening
 Collision avoidance
 Overheating avoidance
 Message passing.
• If there is no event node goes to sleep mode and set timer as shown in fig.
1.2
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8. Fig 1.2 : Periodic listening scheme of S-MAC protocol
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9. WBAN TECHNOLOGIES
• Bluetooth  802.15.1
• Zig Bee  802.15.4
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10. Bluetooth
• Bluetooth is low tier, ad hoc wireless standard for short-range
communication.
• Designed for small and low cost devices.
• Range  1 to 100m and uses 2.4 GHz .
• Up to 8 BT devices can actively participate in a small network
 Pico-net.
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11. ZigBee
• ZigBee is a low tier, ad hoc, wireless standard similar to Bluetooth.
• It operates in 68MHz, 915MHz, and 2.4GHz ISM bands.
• Speed 250kbs at 2.4GHz .
• Follows 2 different technologies
1. Slotted channel structure Fig 1.3
2. Un-slotted channel structure.
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12. Fig 1.3 : Slotted channel structure
• 1 Channel in 868-868.6Mhz  20kbps.
• 10 Channels in 902-928 MHz  40kbps.
• 16 Channels in 2.4-2.483 GHz 250kbp..s
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13. WPAN Wireless Personal Area Network
• WPAN is a personal, short distance area wireless network.
• Networking of mobile computing devices  PCs, Peripherals, Cell
phones, Printers etc..
• WPAN also called “Short Wireless Distance Networks”
• Range  up to 10m.
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14. WPAN Architecture
• Master slave configuration as shown in fig 1.6
• Master controls transmission schedules of all devices in the WPAN.
• Slaves can only communicate with the master.
• At a time only one device can transmits using TDMA technique.
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15. Fig 1.4 : WPAN Architecture.
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16. BLUETOOTH
• Short range radio technology 2.4GHz ISM frequency band.
• Protocol stack arrangement of Bluetooth is shown in fig 1.5.
1. PHY radio layer  Receives and Transmit
2. Baseband layer  Enables physical RF link
3. Logical link  Handles link establishment
4. L2CAP  Lower connection based Bluetooth commn.
5. Audio profile  Managing connection
6. Control  Processes various control operations
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17. Fig 1.5 : Bluetooth Protocol Stack.
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18. 7. Other LLC  Optional in devices are LAN, file tx, Sync.
8. RF Commn  Multiplexing and flow control.
9. TCS  Establishment of speech and data calls.
10.SDP  Publishing and discovery of services.
11.Applcn. Profile  Audio, Network, Telephony service Applcn..
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19. LR-WPAN : ZigBee
• Frequency Band  ISM band and International frequency bands
• Channel allocation :
a. 1 Channel : 868MHz.
b. 10 Channel : 915MHz.
c. 16 Channel : 2.4GHz.
• Uses MSK and BPSK modulation techniques
• Range  10-75m.
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20. ZigBee Components
• The most basic component is a Device.
• Device  FDD(Full Function Device) /
RDD (Reduced Function Device)
• FDD can operate in 3 modes :
a. Coordinator,
b. A router,
c. A device.
• RFD is intend for simple applications.
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21. References :
• Jamil. Y. Khan and Mehmet R. Yuce (2010). Wireless Body Area
Network (WBAN) for Medical Applications, New Developments in
Biomedical Engineering, Domenico Campolo (Ed.), ISBN: 978-953-
7619-57-2,
• Wireless and mobile networks by dr.Sunilkumar s manvi.
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