doc.: IEEE 802.15-13- 0385-01-0008 Submiss ion July 2013 Tae-Joon Park, etc. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Low Energy Service Discovery PHY for PAC WPAN] Date Submitted: [July 2013] Source: [Tae-Joon Park*, Keun Hyung Lee*, Wun-Cheol Jeong*, Chang-Sub Shin*, Hoyong Kang*, Jewon Lee**, Jae-Min Ahn** ] Company: [*ETRI, **Chungnam National Univ.] E-Mail:[*[email protected], **[email protected]] Re: [] Abstract: 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 802.15-13-0385-01-0008 Submission July 2013 Tae-Joon Park, etc. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)
Jan 18, 2018
doc.: IEEE Submission July 2013 Tae-Joon Park, etc. Discovery Peer discovery & group discovery. –Discovery is defined as uni-directional. –Mutual discovery is two uni-directional discoveries Properties –Expedited discovery –Energy-efficient discovery (e.g. low duty cycle) –Support high PD density and high discovery traffic –Efficient spectrum utilization –Prioritized access to discovery Source : tg8-technical-guidance-document.docx
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doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Low Energy Service Discovery PHY for PAC WPAN]Date Submitted: [July 2013]Source: [Tae-Joon Park*, Keun Hyung Lee*, Wun-Cheol Jeong*, Chang-Sub Shin*, Hoyong Kang*, Jewon Lee**, Jae-Min Ahn** ]Company: [*ETRI, **Chungnam National Univ.]E-Mail:[*[email protected], **[email protected]]Re: []Abstract:
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 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.Slide 2
Low Energy Service Discovery PHY for PAC WPAN
Tae-Joon Park*, Keun Hyung Lee*, Wun-Cheol Jeong*, Chang-Sub Shin*, Hoyong Kang*, Jewon Lee**, Jae-Min Ahn**
*ETRI, **Chungnam National Univ
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Discovery
• Peer discovery & group discovery. – Discovery is defined as uni-directional. – Mutual discovery is two uni-directional discoveries
• Properties – Expedited discovery – Energy-efficient discovery (e.g. low duty cycle)– Support high PD density and high discovery traffic– Efficient spectrum utilization– Prioritized access to discovery
Source : 15-12-0568-05-0008-tg8-technical-guidance-document.docx
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Common discovery mode for PAC
• Low Energy Service Discovery(LESD)– Discovery
• Channel discovery : common discovery mode channel• Device discovery : communication channel
– Channel discovery• Find communication channel information(physical channel)
– Frequency band & channel information • Application type ID/group ID• Request | Response | Notification
• Move to communication channel • Start normal communication process : con. setup, data exchange…
– Avoid to Excessive discovery delay and power consumption• Overhearing, duty cycling, …• 15-13-0378-00-0008-low-energy-service-discovery-mac-protocol-for-pac-
wpan.ppt
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
LESD mode for PAC
• Separate discovery and management function from communication function
• Support interoperability between PAC devices
• Separated out of band control channel
• Potential applications– Synchronization, Emergency communication, SMS, . . .
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Common discovery mode PHY
• Mainly for discovery function(not communication mode)– Optimized to discovery mode requirements– Independent to communication mode technologies
• Should not be a big burden : additional PHY– Lower rate / lower power / smaller (gate) size / easier to
implement / …
• Coverage– Longer than communication modes
Slide 6
Source : 15-13-0182-01-0008-common-discovery-mode-for-pac.ppt
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Common discovery mode PHY
Band(MHz) Modulation Modulation index
Channelspacing(kHz)
Data rate(kb/s)
Sub-GHz Filtered 2FSK 1 200 50
• Low HW implementation complexity• Simple PHY
– IPR free to reduce the debate requires well known and simple PHY
– Single mode (modulation type, rate, etc.)
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Example of transmitter structure
PHR/ PSDU bits
FSKModulator
Modulated Signal
Controlled by FEC mode
FEC
Concatenation
SFD bits
Preamble bits
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Basic Frame structure
• SHR(Preamble + SFD) : 64 bits(48+16)• PHY Header : 1 byte
– Message type (1 bit)• Request, response, Notification, Preamble(No PSDU field)
– PSDU Length / BRB count (7 bits) : 0 ~ 127• Max PSDU length : 127 bytes
Preamble(48bits) PHY Header(8bits) PHY Payload(0~127bits)SFD(16bits)
SHR PHR PSDU
Octets1 Variable
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Basic Frame structure
• SHR(Preamble + SFD) : 64 bits(48+16)
Messagetype
SFD value for uncoded(PHR+PSDU)
SFD value for coded(PHR+PSDU)
Request 0110 0011 1011 0001 1001 1100 1011 0001
Response 0110 0011 0100 1110 1001 1100 0100 1110
Notification 0110 0011 0110 0011 1001 1100 0110 0011
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Basic Frame structure
• PHR
Bit string index 0 1–7
Bit mapping T0 L6–L0
Field name FrameType Frame Length / BRB count
T0 Frame Type
0 LESD PSDU
1 No PSDU
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
• Symbol duration : 20us• CCA(ED) time : 8 symbol periods• Interframe spacing (IFS)
– macLIFSPeriod : 40 symbol periods– macSIFSPeriod : 12 symbol periods
• Forward error correction (FEC)– FEC is optional. – If the SFD indicates that FEC is used, then the FEC is
applied to the PHR and PSDU as a single block of data.
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Appendix.
Selected simulation results.
Slide 13
Ref. : 15-13-0378-00-0008-low-energy-service-discovery-mac-protocol-for-pac-wpan.ppt
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Simulation Parameter• Scenarios & parameters for discovery phase
- IEEE P802.15-12-0568-05-0008 Tg8 TGD- Uniform random drop in 500×500 m2 area- 100, 500, 1000, 5000, 10000 PDs
- IEEE P802.15-12-0459-0008 Channel models for TG8- 15-13-0378-00-0008-low-energy-service-discovery-mac-
protocol-for-pac-wpan.ppt• Time Parameter
Parameter Value
Channel Space 200 [kHz]
Data Rate 50 [kbps]
Frame Length 3.6 [msec]
Request Time 720 [msec]
Response Time 4 [msec]
Processing Time 5 [msec]
Random Backoff unit Time 100[usec]
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Performance metric for discovery
• Average number of discovered PDs over the simulation time.
• CDF of the discovery latency according to the number of PDs
• Average power consumption for discovery[mW/s]
Source : 15-12-0568-05-0008-tg8-technical-guidance-document.docx
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Simulation results for 100 PDs (1)• Average number of discovered PDs for the 5 path loss models
0 100 200 300 400 500 600 700 800 900 10000
10
20
30
40
50
60
70
80
90
100
Time[sec]
# of
dis
cove
red
PD
s
Discovered PDs over the Simulation Time(# of PDs = 100, path loss model #5)
0 500 1000 15000
10
20
30
40
50
60
70
80
90
100
Time[sec]
# of
dis
cove
red
PD
s
Discovered PDs over the Simulation Time(# of PDs = 100, path loss model #4)
0 100 200 300 400 500 600 7000
10
20
30
40
50
60
70
80
90
100
Time[sec]
# of
dis
cove
red
PD
s
Discovered PDs over the Simulation Time(# of PDs = 100, path loss model #3)
0 5 10 15 20 250
10
20
30
40
50
60
70
80
90
100
Time[sec]
# of
dis
cove
red
PD
s
Discovered PDs over the Simulation Time(# of PDs = 100, path loss model #2)
0 1 2 3 4 5 6 7 810
20
30
40
50
60
70
80
90
100
Time[sec]
# of
dis
cove
red
PD
s
Discovered PDs over the Simulation Time(# of PDs = 100, path loss model #1)
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Simulation results for 100 PDs (2)• CDF of the discovery latency for the 5 path loss models
0 500 1000 1500 2000 2500 30000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Time[msec]
Pro
babi
lity
CDF of the discovery latency(# of PDs = 100,Path loss model #5)
0 500 1000 1500 2000 2500 30000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Time[msec]
Pro
babi
lity
CDF of the discovery latency(# of PDs = 100,Path loss model #4)
0 500 1000 1500 2000 2500 30000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Time[msec]
Pro
babi
lity
CDF of the discovery latency(# of PDs = 100,Path loss model #3)
0 500 1000 1500 2000 2500 30000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Time[msec]
Pro
babi
lity
CDF of the discovery latency(# of PDs = 100,Path loss model #2)
0 500 1000 1500 2000 2500 30000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Time[msec]
Pro
babi
lity
CDF of the discovery latency(# of PDs = 100,Path loss model #1)
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Simulation results for 100 PDs (3)• Average power consumption for the 5 path loss models
10 20 30 40 50 60 70 80 90 1000
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2Average Power consumption(# of PDs = 100,Path loss model #1)
PD index
Ave
rage
Pow
er[m
W]
10 20 30 40 50 60 70 80 90 1000
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2Average Power consumption(# of PDs = 100,Path loss model #2)
PD index
Ave
rage
Pow
er[m
W]
10 20 30 40 50 60 70 80 90 1000
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2Average Power consumption(# of PDs = 100,Path loss model #3)
PD index
Ave
rage
Pow
er[m
W]
10 20 30 40 50 60 70 80 90 1000
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2Average Power consumption(# of PDs = 100,Path loss model #4)
PD index
Ave
rage
Pow
er[m
W]
10 20 30 40 50 60 70 80 90 1000
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2Average Power consumption(# of PDs = 100,Path loss model #5)
PD index
Ave
rage
Pow
er[m
W]
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Simulation results for 10000 PDs (1)• Average number of discovered PDs for the 5 path loss models
0 1 2 3 4 5 6 7 8 91000
2000
3000
4000
5000
6000
7000
8000
9000
10000
Time[sec]
# of
dis
cove
red
PD
s
Discovered PDs over the Simulation Time(# of PDs = 10000, path loss model #1)
0 5 10 15 20 25 300
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
Time[sec]
# of
dis
cove
red
PD
s
Discovered PDs over the Simulation Time(# of PDs = 10000, path loss model #2)
0 20 40 60 80 100 120 140 1600
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
Time[sec]
# of
dis
cove
red
PD
s
Discovered PDs over the Simulation Time(# of PDs = 10000, path loss model #3)
0 20 40 60 80 100 120 140 160 1800
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
Time[sec]
# of
dis
cove
red
PD
s
Discovered PDs over the Simulation Time(# of PDs = 10000, path loss model #4)
0 20 40 60 80 100 120 140 1600
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
Time[sec]
# of
dis
cove
red
PD
s
Discovered PDs over the Simulation Time(# of PDs = 10000, path loss model #5)
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Simulation results for 10000 PDs (2)• CDF of the discovery latency for the 5 path loss models
0 500 1000 1500 2000 2500 30000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Time[msec]
Pro
babi
lity
CDF of the discovery latency(# of PDs = 10000,Path loss model #5)
0 500 1000 1500 2000 2500 30000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Time[msec]
Pro
babi
lity
CDF of the discovery latency(# of PDs = 10000,Path loss model #4)
0 500 1000 1500 2000 2500 30000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Time[msec]
Pro
babi
lity
CDF of the discovery latency(# of PDs = 10000,Path loss model #3)
0 500 1000 1500 2000 2500 30000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Time[msec]
Pro
babi
lity
CDF of the discovery latency(# of PDs = 10000,Path loss model #2)
0 500 1000 1500 2000 2500 30000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Time[msec]
Pro
babi
lity
CDF of the discovery latency(# of PDs = 10000,Path loss model #1)
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Simulation results for 10000 PDs (3)• Average power consumption for the 5 path loss models
1000 2000 3000 4000 5000 6000 7000 8000 9000 100000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1Average Power consumption(# of PDs = 10000,Path loss model #1)
PD index
Ave
rage
Pow
er[m
W]
1000 2000 3000 4000 5000 6000 7000 8000 9000 100000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1Average Power consumption(# of PDs = 10000,Path loss model #2)
PD index
Ave
rage
Pow
er[m
W]
1000 2000 3000 4000 5000 6000 7000 8000 9000 100000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1Average Power consumption(# of PDs = 10000,Path loss model #3)
PD index
Ave
rage
Pow
er[m
W]
1000 2000 3000 4000 5000 6000 7000 8000 9000 100000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1Average Power consumption(# of PDs = 10000,Path loss model #4)
PD index
Ave
rage
Pow
er[m
W]
1000 2000 3000 4000 5000 6000 7000 8000 9000 100000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1Average Power consumption(# of PDs = 10000,Path loss model #5)
PD index
Ave
rage
Pow
er[m
W]
doc.: IEEE 802.15-13-0385-01-0008
Submission
July 2013
Tae-Joon Park, etc.
Thank you.
Q & A
Slide 22
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