Doc.: IEEE 802. 15-09-0003-00-0006 Submission S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), &...
-
Upload
maurice-rodgers -
Category
Documents
-
view
213 -
download
0
Transcript of Doc.: IEEE 802. 15-09-0003-00-0006 Submission S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), &...
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 1
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [WBAN = Mobile Femto-cell]Date Submitted: [5 January 2009]Source: [S.M. Ryu, D.Y. Kim, C.S. Eun, & H.S. Lee] Company [Casuh, Chungnam Univ., ETRI]Address [#813 Leaders B/D, 342-1, Bundang, Seongnam, Kyeonggi, 463-828, Korea]Voice: [+82-31-709-5577, +82-42-821-6862], FAX: [+82-31-709-5578, +82-42-823-5586]E-Mail:[[email protected], [email protected], [email protected]]
Re: [Contribution to IEEE 802.15.6 Meeting, January 2009]
Abstract: [In the future, WBAN and 5G communication system would not be separated systems. To increase mobile channel capacity, it is inevitable to reduce cell size. If we reduce cell size to 3m radius femto-cell, then the base station becomes a body coordinator. Therefore we should consider 5G communication phenomena during considering WBAN standard.]
Purpose: [Proposal]
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.
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
January 2009
S. M. RyuCASUH
D. Y. Kim, C.S. EunCNU
H. S. LeeETRI
WBAN = Mobile Femto-cell
In the future, WBAN and 5G communication system would not be separated systems. To increase mobile channel capacity, it is inevitable to reduce cell size. If we reduce cell size to 3m radius femto-cell, then the base station becomes a body coordinator. Therefore we should consider 5G communication phenomena during considering WBAN standard.
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 3
How to increase mobile channel capacity ?
Macro Micro Pico Femto
Capacity 1 100 10,000 Low PowerPersonal Space
MobilityTx Power 1 1/1,000 1/1,000,000
3Km
Macro
.
300m
Micro30m
Pico Femto3m
Ubiquitous World Personal Mobile Space (WBAN)
Find new frequencies not developed yet ; no more available Find new signal processing technique's ; only few times increasable But we need few hundreds times capacity or more The only way to achieve few thousand times capacity ; reduce cell size
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 4
Body Coordinator Mobile Femto-cell
Body Master
Body coordinator is not a sufficing concept. Synchronous frames can reject mutual interference among RF’s . So, Body coordinator should synchronize all of body device’s.
Better to rename body coordinator as “Body Master”.
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 5
S
S
S
S
M
S
S
S
S
M
Body Master Operation
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 6
Power Shift by Generation
Consumer=Producer
Homemade Products
ProductAds
Producer
Industry Revolution
Consumer
distributordistributor
Consumer
GoverningSpace
Producer
ConsumerRevolution
User
internet
distributor
Producer
Internet
Internet
User
distributor
Producer
Private Ads Google
PicoCast
broadcasting
broadcasting
The market of Google is effective only when customer exists in front of the monitor
What will be the next Google market ???
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 7
Paradigm Change : User Oriented
User terminals should meetprovider specifications
Mobile Phone
WiBro
IPTV
RFIDUSN
DMB
MobileVoIP
u-City
HomeNetwork
Infra
Ubiquitous
WiBro
IPTV
RFIDUSN
MobilePhoneDMB
MobileVoIP
HomeNetwork
u-City
Users select among servicesbroadcast by providers
Provider Oriented User Oriented
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 8
Internet
Internet
Mobile
Wired
Broad-casting
Market Initiative WBAN
Wired
Wired
Broad-casting
WBAN
Mobile
Mobile
Wired
Broad-casting
WLAN
FemtoIPTV
User oriented Ubiquitous : Mobile Femto-cell
Mobile Internet
Mobile VoIP
Wired
MobileBroad-casting
Internet
WLAN
FemtoIPTV
Home
Appliance
Mobile VoIP
Mobile Femto-cell
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 9
Mobile Femto-cell = Body Master
?Mobile Femto-cell =User Oriented Service Convergence
Mobile Phone
Wired
PC
IPTV
Home Appliance
Body Master
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 10
Body Master Mobility
C
A
B
e
d
fb
c
a
S
g
h
To reduce mutual interference, mutual synchronization is necessary
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 11
2.4GHz
~Mbps
UWB
~10Mbps
400MHz
~ KbpsPHY
MAC
APPMedical
Very high QoS
Non-medical High Speed
Full Single MAC
Hybrid Dual MAC
Arrange Requirements List up user requirements Check realizability If no, reduce requirements
Challenges & Opportunities In-body / Out-body Interference Multiple MAC or Single MAC ? Compromise power & speed Medical / Non-medical support
Add process gain for medical use ?
Independent Multiple MAC
Choose existing technique Select good chip Enhance antenna matching Reduce system size & Good design
Issues in WBAN Work Scope
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 12
Solutions for Challenges
1. In-body / Out-body Interference Chg. : Even though difference frequency band interfere each
other Sol. : Synchronized Frame can reject mutual interference
among PHY’s 128bit multi preamble is necessary to enhance sync.
probability 2. Single MAC to support Multi-PHY’s Chg. : Single PHY cannot meet so wide user requirements Sol. : Multi preamble is useful to support scalable data rate Synchronized Frame can support different PHY’s
without interference
3. Compromise Power & Speed Chg. : Low power sensor and High speed multimedia should
supported Sol. : Multi PHY concept can support Multi RF Block
Sensor use single RF Block, Multimedia use multi RF Block’s
4. Medical / Non-Medical Dual support
Chg. : Medica needs 10-10 BER performance with low speed
Sol. : 128bit Multi preamble provides enough Process Gain
doc.: IEEE 802. 15-08-0485-01-0006
Submission
<July 2008>
H.S.Lee(ETRI) ,D.Y.Kim (Chungnam Univ.), & S.M.Ryu(Casuh)Slide 13
How to avoid mutual interference
I0
I1
I2
I3
O1
O2
R
R
T
T
T
R
T R
R
T
T
R
R
R
T
Unified Frame
R
R
R
R
T
T
T
T
R
R
T
T
R
R
R
T
T
R
R
T
T
T
T R
R
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 14
Multiple Preamble Concept
Lock time Message EOF
Fixed
Header
VariableMultiple
Lock time MessagePreamble EOFHeader
Conventional Frame Structure
Suggested Frame Structure
Sync Aide
Sync Aide& Command
Multiple Preamble contains short message
Preamble
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 15
70 80 90 100 110 12010
-12
10-10
10-8
10-6
10-4
10-2
100
Threshold
Mis
sed
Det
ecti
on a
nd F
alse
Ala
rm P
roba
bili
ty
-3 dB
-2 dB
-1 dB
0 dB
1 dB
2 dB
3 dB
4 dB
5 dB
6 dB
7 dB
8 dB
9 dB
10 dB
false alarm
False Alarm & False Dismissal Probability for WBAN
64bit is not enough but 128 bit is too high ; so we suggest multi Preamble
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 16
Process Gain for Medical Use
~7dB
Non-Medical
Medical
Spread Spectrum
Block~14dB
Medical~Kbps
Non-Medical100Kbps
Environment SNR might be under the 0 dB
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 17
Single Baseband for Multi PHY(RF) Concept
RF #1f1
RF #2f2
RF #3f3
RF #4f4
RFcombiner
4M
4M
4M
4M
Mux/Demux
12Mbps
32MHz
FrameFormat
16M
• Frequency Diversity• High speed Tx with narrow band RF
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 18
TestPath
DiversityMode
Diversity Number
1 2 3 4 5
Case A
Mode 1 5390 / 646 1563 / 29 667 / 3 282 / 0 210 / 0
Mode 2 3123 / 602 2293 / 316 2022 / 253 1874 / 230 1758 / 214
Mode 3 4506 / 1096 3258 / 902 2868 / 848 2666 / 825 2541 / 811
Case B
Mode 1 2700 / 329 106 / 2 9 / 0 1 / 0 0 / 0
Mode 2 3601 / 601 2487 / 303 2136 / 254 1945 / 237 1816 / 229
Mode 3 2361 / 422 1706 / 185 1457 / 135 1310 / 125 1215 / 111
Case C
Mode 1 8264 / 1272 3545 / 101 1536 / 8 637 / 0 480 / 0
Mode 2 4648 / 724 3416 / 424 2976 / 363 2750 / 332 2580 / 309
Mode 3 5640 / 961 4287 / 614 3749 / 514 3461 / 460 3280 / 418
Frame Error Rate & Sync Loss Table
# of frame error / # of Sync loss
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 19
Frame Structure example for scalable data rate
Lock Preamble Tag AA Payload EOF
1Mbps 250K ~ 4Mbps
250μsec 128μsec 64μ 1500μsec 50μ
2msec
8μ
Overhead : Payload = 1 : 3
Payload Data Speed = 750Kbps ; 1MHz clock
750K / 1M1.5M / 2M 3M / 4M 6M / 8M 12M / 16M
Basic data rate Scalable data rate
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 20
Additional Considerations for WBAN
30m
Pico
Femto
3m
• Power Control• Fast paring• Mutual Sync.• Role Exchange• QoS Check• Emergency Alarm• Hand-over
Through Body 3m = Forward Body 30m
doc.: IEEE 802. 15-09-0003-00-0006
Submission
S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)
<January 2009>
Slide 21
Conclusion WBAN body master will work like a mobile femto-cell.
Increasing mobile channel capacity will reduce the cell size as small as possible Mutual interference among Body’s must be solved.
Additional WBAN conditions should be considered for future market. How to minimize the mutual interference among the crowded moving body’s ? How to minimize initial sync time & how to maintain synchronized status ? Who will be the super master and govern areal body’s ?
The WBAN standard should includes items as follows ; Interference cancelling in-body, on-body, out-body, & among-body Single MAC to support multi PHY for wide user requirements Compromise conflicting items (power & high speed; medical & nonmedical)
New suggestions are submitted for chaos WBAN standard Synchronous frame to reject interference in-, on-, out-, & among Body’s Multi preamble to enhance synchronization probability & for special purposes Multi RF & frame structure to compromise conflicting items