Transcript - IEEE Mentor

July 2011
doc.: IEEE 11-10/0973r0
Considerations of Compatibility with
802.11v and 11k
Date: 2011-07-12
Authors:
Name
Affiliations
Address
ZTE Corporation
ZTE Plaza,No.19,East
+86Huayuan Road, Haidian
13811485019
District, Beijing,China
[email protected]
Junjian Zhang
ZTE Corporation
No 50 software avenue,
Yuhuatai district,
Nanjing ,China
+8613585108157
[email protected]
Dezhi Zhang
ZTE Corporation
E3048,Bibo Rd,Pudong, +86shanghai,china
13816335629
[email protected]
Boshan Zhang
ZTE Corporation
E3048,Bibo Rd,Pudong, +86shanghai,china
13916146095
[email protected]
Lin Wang
Submission
Phone
Slide 1
email
Lin Wang, ZTE Corporation
July 2011
doc.: IEEE 11-10/0973r0
Abstract
Motivation
 As mentioned in recent FR-EM document(11-11-0905r1)[1] ,
compatibility with the existing 802.11 standard and its amendments
(802.11i/w/s/k/v/u or other TGs) can be also included as one of
maintaining 802.11 user experience(TGah R5), but it is not means
that 802.11i/w/s/k/v/u shall be used in all the applications.
 As we discussed about network management of TGah (11-110672r0) [2] last meeting, IEEE 802.11v/k or IEEE 802.11u may only
apply to some specific TGah Use Cases.
Purpose
 This presentation further discusses the requirements for 11v/k
features in TGah Use Cases.
Submission
Slide 2
Lin Wang, ZTE Corporation
July 2011
doc.: IEEE 11-10/0973r0
11ah network operation& management
Backbone network
Operator platform
11ah AP
15.4g-11ah
Router
Use Case 1
Submission
Use Case 2
Slide 3
Use Case 3
Lin Wang, ZTE Corporation
July 2011
doc.: IEEE 11-10/0973r0
Current Use Cases [3]
• Use Case 1 : Sensors and meters
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–
–
–
–
–
–
1a: 11/17r5, slide 7
Smart Grid - Meter to Pole
1c: 11/253,
Environmental/Agricultural Monitoring
1d: 11/260r1, slid 4
Industrial process sensors
1e: 11/17r5, slid 17
Healthcare
1f: 11/241r0, slide 3
Healthcare
1g: 11/241r0, slid 5
Home/Building Automation
1h: 11/242r0, slid 2
Home sensors
• Use Case 2 : Backhaul Sensor and meter data
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–
2a: 11/14r2, slide 5
2b: 11/260r1, slide 4
Backhaul aggregation of sensors
Backhaul aggregation of industrial sensors
• Use Case 3 : Extended range Wi-Fi
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–
Submission
3a: 11/243r0
3b: 11/244r1
Outdoor extended range hotspot
Outdoor Wi-Fi for cellular traffic offloading
Slide 4
Lin Wang, ZTE Corporation
July 2011
doc.: IEEE 11-10/0973r0
11v and 11k Features for TGah
 11v/k Related Network Optimization Functions
 11v Related Power Saving Functions
Submission
Slide 5
Lin Wang, ZTE Corporation
July 2011
11v/k Related Network
11v/k Network
Optimization
Functions
1
2
3
doc.: IEEE 11-10/0973r0
Optimization Functions [4]
Details
User notifies poor performance, administrator executes
Event, Diagnostic Reports
“diagnostic” function and receives a user session
(11v), Statistics (11k)
report, then takes actions to resolve the problem.
For user requirement /assets missing/stolen/periodic
Network Inventory report, including Manufacturer information and
Diagnostic Reports (11v)
configuration profile
BSS Transition Mgt, Event
Provides additional information to the STA to help with
Load Balancing
Reports (11v), Neighbor,
load-balancing decisions as roaming decisions
Beacon Report (11k)
Diagnostic and
troubleshooting
4
Location Services Enable E-911 , asset recovery , troubleshooting
5
Network Mgt 3rd
Party Location
6
7
8
11v/k Features
User A can query AP for User B’s location within a
BSS so that User A can move towards User B and
establish a direct link in another band.
Efficient Channel
Using SSID List and Multi-BSSID IE to reduce the
Utilization
channel congestion
(Cleaning the Air)
Using Quite Element to prevents administrator from
Efficient Power
getting false alarms for excessive retries. Enable AP
and Channel
to communicate its power changes to the STA, then
Management
prevent the STA connection drops
Monitor current network load and utilization, gather link
Network “Health” quality statistics in known problem areas, in order to
Monitoring
stay ahead of demand curves and identify problem
areas.
Submission
Slide 6
LCI Request/Report (11v, k)
LCI Request/Report
3rd Party Location(11v)
SSID List, Multi-BSSID (11v)
Quiet Element (11k), TPC
Request/ Report, Power
Constraint (11k)
Triggered Station Statistics,
Event Reporting (11v),
Statistics, Link Measurement,
Beacon Report (11k)
Lin Wang, ZTE Corporation
July 2011
doc.: IEEE 11-10/0973r0
Network Optimization Functions for TGah
•
network diagnostic and troubleshooting/Inventory/network “Health”
Monitoring
Network diagnostic and troubleshooting and network inventory functions are
useful for administrator to quickly respond to the poor network performance, by
using event/diagnostic Reports (11v) and statistics (11k) features.
Network “Health” monitoring function can further help administrator knows
network load and utilization at any time, but more features need to be supported.
• load balancing/ efficient channel utilization/ power and channel
management
These functions are very useful in large-scale and densely located networks ( e.g.
Smart Grid, building, Use Case3 ) to improve radio channel utilization and
reduce interference.
• location services
These functions might be used for physical locate the broken/stolen/alarm sensors
(especially in uninhabited area) for sensors/property recovery, location based
troubleshooting and emergency services.
Submission
Slide 7
Lin Wang, ZTE Corporation
July 2011
doc.: IEEE 11-10/0973r0
11v Related Power Saving Functions [5]
11v Power
Saving Functions
Details
11v Features
1
IT staff configure the network to support
Network Enabled
Proxy ARP,
additional services that enable longer
Power Save
BSS Max Idle Period
battery life of end devices.
2
STA initiated
Power Save –
Wake on WLAN
STA sleeps, requests network wake it
only for specific traffic types
Traffic Filtering Service,
WNM Sleep Mode
3
Network Power
Save with
graceful STA
transitions
AP notifies STAs that it will be
powering-down., STAs can associate to
another indicated AP, with minimal
disruption and little additional required
scanning.
BSS Termination
4
Enable STA
Power Save for
multicast traffic
Devices can save more power if devices
DMS, FMS, Proxy ARP,
STA doesn’t need to wake up at every
TIM Broadcast
DTIM interval to receive multicast frame.
Submission
Slide 8
Lin Wang, ZTE Corporation
July 2011
doc.: IEEE 11-10/0973r0
Rank of 11v Power Saving Functions in TGah Use Cases
11v Power
Saving
Functions
Use Case 1-Sensors and Meters
Use
Case 2Backhaul
Use
Case 3Extended
Range
1a
2a
3a
11v Features
1c
1d
1e/1f
1g/1h
2b
3b
Smart
Grid
env.
agr.
Indust
rial
Health
care
Home
building
15.4
/4g
Indust
rial
Hot
spot
Off
load
1
Proxy ARP,
Network Enabled
BSS Max Idle
Power Save
Period
H1
H1
H1
H1
H1
H1
H1
H1
H1
2
STA initiated
Power Save Wake on WLAN
Traffic Filtering
Service, WNM
Sleep Mode
H2
H2
H2
H2
H2
H2
H2
H2
H2
3
Network Power
Save with
graceful STA
transitions
BSS
Termination
L
L
L
L
L
M
M
M
M
4
Enable STA
Power Save for
multicast traffic
DMS, FMS,
TIM Broadcast,
Proxy ARP
M
M
M
H3
M
H3
M
M
M
Submission
Slide 9
Lin Wang, ZTE Corporation
July 2011
doc.: IEEE 11-10/0973r0
Conclusion: compatibility with 11v/k due to TGah Use Cases
•
Use Case 1 : Sensors and meters
–
–
•
Use Case 2 : Backhaul Sensor and meter data
–
–
•
For large mount of battery operated sensors /meters are supported, the user and
manufacturer want to extend the battery life of end devices as long as possible,
only perform essential functions.
If 11ah station function is implemented in each wireless sensor controller, then
most of IEEE 802.11v/k features may not probably be implemented due to higher
cost or other reasons, but some of power saving features in 11v may need to be
implemented.
For 11ah STA is an aggregator of leaf sensors, the information of sensors need to
be collected by 11ah STA such as battery power status, location and traffic status ,
and then 11ah STA reports the information to 11ah AP for network management
(e.g. load balance and troubleshooting).
Some of IEEE 802.11v/k features may be supported by 11ah.
Use Case 3 : Extended range Wi-Fi
–
–
Submission
It is an extension of traditional Wi-Fi. Operator need to operate& manage not only
11ahAP, but also 11ah stations by the proxy of 11ah AP , especially for 3b(cellular
traffic offloading).
Some of IEEE 802.11v/k features may be supported by 11ah.
Slide 10
Lin Wang, ZTE Corporation
July 2011
doc.: IEEE 11-10/0973r0
Next Step Consideration
 FR-R5 Maintaining user experience - 11v/k
• Network operation & management can be considered into
two categories:
 Network Optimization
- network diagnostic and troubleshooting/Inventory
- load balancing
- efficient channel utilization
- efficient power and channel management
- location services
-…
 Power Saving
Submission
Slide 11
Lin Wang, ZTE Corporation
July 2011
doc.: IEEE 11-10/0973r0
Next Step Consideration
• For 11ah applications, power saving is a priority, 11v related
power saving scheme should be considered.
 Proxy ARP, BSS Max Idle Period,“Wake on WLAN ” are
considered as essential functions in all 11ah Use Cases.
 For multicast traffic , scheme of DMS, FMS and TIM
Broadcast can save more power for STA.
• For cost and other considerations, schemes of network
optimization in 11v/k need to be simplified, or new schemes
might be considered.
 FR-R7 Enhanced Power Saving
• Reusing power saving scheme in 802.11 and 11v as more as
possible is a principle.
• Some modification in 11v and new power saving schemes might
be considered due to different 11ah Use cases.
Submission
Slide 12
Lin Wang, ZTE Corporation
July 2011
doc.: IEEE 11-10/0973r0
References
[1] TGah Functional Requirements and Evaluation Methodology
Rev. 1, IEEE802.11-11/0905r1
[2] IEEE 802.11ah network operation & management consideration
for functional requirement, IEEE 802.11-11//0672r0
[3] Potential Compromise for 802.11ah Use Case Document,
IEEE802.11-11/0457r0
[4] WiFi Alliance WNM Operations and Troubleshooting MRD v0.6
[5] WiFi Alliance WNM PowerSave MRD v1.0
[6] IEEE 802.11v-2011
[7] IEEE 802.11k-2008
Submission
Slide 13
Lin Wang, ZTE Corporation