Transcript Use Cases, Applications, and Requirements for BANs

January 2007
doc.: IEEE 802.15-07-0564
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks
(WPANs)
Submission Title: [Use Cases, Applications, and Requirements for BANs]
Date Submitted: [January 17, 2007]
Source: [Carlos Cordeiro] Company [Philips]
Address [345 Scarborough Rd., Briarcliff Manor, NY 10562]
Voice: [+1 914-945-6091], FAX: [+1 914-945-6330], E-Mail: [[email protected]]
Re: [In response to Call for BAN Use Cases and Applications]
Abstract: [This presentation illustrates key use cases, applications and technical requirements for
BAN.]
Purpose: [To provide information on BAN use cases, applications and technical requirements.]
Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis
for discussion and is not binding on the contributing individual(s) or organization(s). The material
in this document is subject to change in form and content after further study. The contributor(s)
reserve(s) the right to add, amend or withdraw material contained herein.
Release: The contributor acknowledges and accepts that this contribution becomes the property
of IEEE and may be made publicly available by P802.15.
Submission
Slide 1
Carlos Cordeiro, Philips
January 2007
doc.: IEEE 802.15-07-0564
Outline
•
•
•
•
Introduction
Applications
Use Cases
Requirements for BANs
– Application
– Technical
• Conclusions
Submission
Slide 2
Carlos Cordeiro, Philips
January 2007
doc.: IEEE 802.15-07-0564
Introduction
• BAN is about providing a unified and scalable (in terms of data
rate, power, number and density of nodes) solution for
connectivity in, on and around the body
– Enables the convergence of sensors/actuators, wireless
communication and healthcare/consumer devices
– Towards the connected consumer experience
• A BAN standard must:
– Provide the pathway to achieve the required scalability and low
power goals
– Provide the necessary QoS, coexistence, security, network
management, SAR compliance and reliability needed by the
envisioned applications
• A BAN standard must address healthcare applications
– Many upcoming applications from both professional and consumer
arenas
• “Wireless applications that improve the lives and quality of service to
cardiac patients represent only the first wave in what will be an everexploding field”1
1
– Consumer electronic (CE) applications should also be considered
N. Ansari et al, “Wireless technology advances and challenges for telemedicine,” IEEE Comm. Magazine, vol. 44, no. 4, April 2006.
Submission
Slide 3
Carlos Cordeiro, Philips
January 2007
doc.: IEEE 802.15-07-0564
BAN Applications
•
•
Convergence of healthcare and CE
applications towards the connected
consumer experience
Healthcare
–
Implantable medical devices
•
–
Swallowable
•
–
•
Pills for drug delivery and imaging
Wearable sensors
•
–
–
–
Cancer tracking, cardiac pacemakers
/ defibrillators, neurostimulators, drug
pumps, glucose sensor, etc.
EEG, ECG, blood pressure, body
temperature, …
Hearing aids
Wellness / Fitness sensors
Baby care
CE
–
–
Wearable audio & Video stream
Remote control & I/O devices
•
E.g., Imaging
Source: G. Haubrich (Medtronic, Inc.), “Wireless Applications in Healthcare: Wireless
Telemetry for Active Implantable Medical Device (AiMD) Systems,” IEEE Spectrum
Webcast, Nov. 30, 2006.
Submission
Slide 4
Carlos Cordeiro, Philips
January 2007
doc.: IEEE 802.15-07-0564
BAN Applications
Backbon
e
Implanted
Submission
Body-worn
Slide 5
Carlos Cordeiro, Philips
January 2007
doc.: IEEE 802.15-07-0564
Use Case: Drug Delivery
• Pill travels in the gastrointestinal tract and is in
periodic wireless
communication to an
external unit near the
body
• Pill lifetime is between
8-72 hours
• Communication range
is between 1 and 3
meters
Submission
Slide 6
Carlos Cordeiro, Philips
January 2007
doc.: IEEE 802.15-07-0564
Use Case: Drug Delivery
•
Patient at home
– Pill reports actions and sensor data to portable unit every few seconds or
minutes
– Possibly more than one pill in the patient
– Can not guarantee portable unit is within range
• Pill may store data and download when portable unit is found
•
Patient in research clinic or hospital
– Multiple patients on a clinical ward
– Pill reports actions and sensor data
– Possible central external unit talking to and commending several pills
•
Data rate
– Generally low: status and simple sensor (e.g., pH) measurements taken on
the order of every minute
– Exception: use of an image sensor where images are taken and transmitted
• Commercial products exist with data rates as high as 800 Kbps
Submission
Slide 7
Carlos Cordeiro, Philips
January 2007
doc.: IEEE 802.15-07-0564
Use Case: Deep Brain Stimulation (DBS)
• A treatment of neurological diseases and conditions
by an implanted brain pacemaker that stimulates
different regions of the brain with electrical impulses
Electrodes
Leads
Source: Medtronic, Inc.
Submission
Implanted Pulse Generator (IPG)
Slide 8
Carlos Cordeiro, Philips
January 2007
doc.: IEEE 802.15-07-0564
Use Case: Deep Brain Stimulation (DBS)
• The IPG needs to
– Communicate wirelessly
with an external unit
– Communicate wirelessly
with an electrode controlling
unit
• Requirements
– Data rate between 128
Kbps and 320 Kbps
– BER < 10-10
– Stand-by power < 0.1 mW
– Lifetime between 3 to 5
years
– Range less than 3m
Submission
Slide 9
Carlos Cordeiro, Philips
January 2007
doc.: IEEE 802.15-07-0564
Use Case: Tumor Growth, Treatment
•
Based on sensed data by
implanted devices, doctors can
change a patient’s treatment or
even recalibrate the implanted
device1
•
Doctors can decide when it is
the right time to take the next
step in a patient’s treatment
•
Requirements
– Data rate < 20 Kbps in most
cases
– Range < 3m
– BER < 10-10
1
See: “MIT implant measures tumor growth, treatment”, Dec. 4, 2006
Submission
Slide 10
Carlos Cordeiro, Philips
January 2007
doc.: IEEE 802.15-07-0564
Use Case: Glucose Level Monitor
•
In patients with diabetes, a
body-worn glucose monitor
analyzes the level of glucose in
the body
•
If the glucose level surpasses a
desirable value, the glucose
monitor informs the patient and,
if appropriate, communicates
with the implanted insulin pump
to release the right amount of
insulin
•
Data rate in the order of 1 Kbps
Submission
Slide 11
Carlos Cordeiro, Philips
January 2007
doc.: IEEE 802.15-07-0564
Use Case: Healthcare and CE (1)
• While doing exercise, one
could use the same personal
device (e.g., MP3 player,
cellular phone, etc.) to:
– Stream music to a wireless
headset
– Receive and display sensing
data such as heart rate,
glucose level, body
temperature, speed, distance,
etc.
• Information sensed can be
used to set the pace for the
rider
• If an abnormal event is
detected, an alarm is sent
from the personal device to
the wireless headset
Submission
Slide 12
Carlos Cordeiro, Philips
January 2007
doc.: IEEE 802.15-07-0564
Use Case: Healthcare and CE (2)
•
User carries a mobile device (e.g.,
cellular phone) which controls and
displays a number of features:
–
–
–
Sensors: body temperature, glucose
level, heart rate, etc.
Streaming to wireless headset
Remote control (e.g., the PDA,
personal CD player, etc.)
•
Mobile device is also used as a
gateway to send remote patient
monitoring data to a central
database where it can be accessed
by the patient’s physician
•
Scalable data rate (up to 10Mbps)
and power consumption (up to
40mW) requirements
Submission
Slide 13
Carlos Cordeiro, Philips
January 2007
doc.: IEEE 802.15-07-0564
Summary of Some Application
Requirements
Application
Target data rate
Latency
BER
Drug Delivery
< 16 Kbps
< 250 ms
< 10-10
Deep Brain
Stimulation
< 320 Kbps
< 250 ms
< 10-10
Capsule Endoscope
1 Mbps
-
< 10-10
ECG
192 Kbps
(6 Kbps, 32 channels)
< 250 ms
< 10-10
EEG
86.4 Kbps
(300Hz sample, 12-bit ADC, 24 channels)
< 250 ms
< 10-10
EMG
1.536 Mbps
(8kHz sample, 16-bit ADC, 12 channels)
< 250 ms
< 10-10
Glucose level
monitor
< 1 Kbps
< 250 ms
< 10-10
Audio
1 Mbps
< 20ms
< 10-5
Video / Medical
imaging
< 10 Mbps
(e.g., Standard Video)
< 100ms
< 10-3
Voice
50 – 100 Kbps per flow
< 10ms
< 10-3
Submission
Slide 14
Carlos Cordeiro, Philips
January 2007
doc.: IEEE 802.15-07-0564
Some Technical Requirements
Requirement
Proposed Range
Operating space
In, on, or around the body
Up to 3 m
Data rate
Scalable
Up to 10Mbps
Target bands
Unlicensed and Medical approved bands
MICS, MEDS, ISM
Device duty cycle
Scalable
Up to 100%
For example, between 0.001-1% in stand-by mode up to 100%
in fully active mode
Peak Power
consumption
Scalable
Up to 40mW
For example, between 0.01-0.1mW in stand-by mode up to
40mW in fully active mode
Ability to be switched-off completely
Coexistence
Coexistence with legacy devices,
primaries, and self-coexistence
Simultaneous nearby operation of hundreds devices belonging
to different BANs
Security
High
Authentication, privacy, encryption, etc.
Safety
High
Meet regulation requirements for SAR
Topology
Multiple simultaneous links
Tens of simultaneous links, no single point of failure, and
multi-hop support
Network Setup
Required
Secure and under a few seconds
Location
information
Desirable
Localization within a radius of a few centimeters
Submission
Slide 15
Carlos Cordeiro, Philips
January 2007
doc.: IEEE 802.15-07-0564
Conclusions
• We have introduced a set of applications, use cases,
and technical requirements that BAN networks must
satisfy
– These must be accounted for in the BAN PAR and 5C
• Existing IEEE 802 standards do not address the
requirements of all these envisioned BAN
applications and use cases
• Healthcare applications should be addressed by any
new BAN standard
– However, CE applications should also be considered
Submission
Slide 16
Carlos Cordeiro, Philips