Transcript - IEEE Mentor

IEEE 802.21 MEDIA INDEPENDENT HANDOVER
DCN: 21-11-0161-00-srho
Title: Recap of Multi-Radio Power Management (MRPM)
Date Submitted: September 21, 2011
Presented at IEEE 802 interim in Bangkok
Authors or Sources: Dennis Edwards, Behcet Sarikaya, James Han,
Junghoon Jee, Anthony Chan
Abstract: Recap of Multi-Radio Power Management for the future
planning of IEEE 802.21
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IEEE 802.21 presentation release statements
This document has been prepared to assist the IEEE 802.21 Working Group. 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.
The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this
contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to
copyright in the IEEE’s name any IEEE Standards publication even though it may include
portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in
whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and
accepts that this contribution may be made public by IEEE 802.21.
The contributor is familiar with IEEE patent policy, as stated in Section 6 of the IEEE-SA Standards
Board bylaws <http://standards.ieee.org/guides/bylaws/sect6-7.html#6> and in Understanding
Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/faq.pdf>
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What IEEE 802.21 targeted…
Zone 1
Operating on
3G WWAN
Zone 2 3G WWAN
Turn on Wi-Fi
Wi-Fi Link Going Down.
Connect to
Wi-Fi
Continue
session on Wi-Fi
Airport
Zone 6
Radio State
3G WWAN
Continue session
on 3G WWAN
Home
Battery level low
Shutdown WiMAX
Switch to 3G WWAN
Shutdown Wi-Fi
Operator initiated switch to WiMAX
Continue session on WiMAX
Zone 7
Plug into power jack
Turn on Wi-Fi
Continue over Wi-Fi
Zone 5
Zone 4
Zone 3
WiMAX
Zone 8
WiMAX
Wi-Fi
WiMAX
GPS
Zone 9
IEEE 802.21, SIP, VCC, IMS, for Network Selection and Service
VCC, 802.21
SIP,
IMS
Call
Continuity
(3G (Wi-Fi
WWAN
WiMAX)
Wi-Fi)
IEEE
802.21,
SIP,
IMS
forfor
Network
for
Service
Discovery
Continuity
Continuity across multiple radios (3G WWAN  Wi-Fi  WiMAX)
Contents
• Overview
• MRPM Principle
• MRPM Use cases
• Existing power management in individual radio technology
• Power Management Problems
• Basic MIH capabilities
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Contents
• Overview
• Power Management Problems
• MRPM Principle
• MRPM Use cases
• Existing power management in individual radio technology
• Basic MIH capabilities
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Multi-Radio Activities in IEEE 802.21
•
Optimized Handover between different technologies
•
IEEE 802.21, Published in Jan-2009
• Security Signaling during Handovers
•
IEEE 802.21a, PAR Approved in Dec-2008
• Handovers to Broadcast Technologies
•
IEEE 802.21b, PAR Approved in Jan-2009
• Battery Power Conservation in Multi-Radio devices
•
MRPM (IEEE 802.21c)
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Contents
• Overview
• Power Management Problems
• MRPM Principle
• MRPM Use cases
• Existing power management in individual radio technology
• Basic MIH capabilities
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Rapid Power Consumption by Multiple Radios
802.11
3GPP;
3GPP2
802.16
Power
802.11
R1
+
–
+
–
+
–
Different technologies have
different modes of operation each
with different power consumption
Service
1 radio
802.16
R1
Standby
Power
3GPP;
3GPP2
R2
R3
+
–
Battery
Drains battery fast if
life
power consumption is
optimized only within each
individual technology
Sleep
R1
Battery life
Battery life (approx. # only for cellular )
2 hrs (talk time)
1 radio
R1
24 hrs (customer expectation)
2 radios
R1,R2
12 hrs
3 radios
1 radio
R1,R2,R3
8 hrs
R1
6 days (customer expectation)
2 radios
R1,R2
3 days
3 radios
R1,R2,R3
2 days
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Contents
• Overview
• Power Management Problems
• MRPM Principle
• MRPM Use cases
• Existing power management in individual radio technology
• Basic MIH capabilities
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Multi-Radio Power Management (1)
• Purpose: Enhance the user experience by extending the battery
operating life of multi-radio mobile devices.
• Scope: Define mechanisms to reduce power consumption of
multi-radio mobile devices based on IEEE 802.21 services.
• Not in Scope: Enhancements to the MAC/PHY of individual
access technologies for making them more power efficient are
outside the scope of this project.
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Multi-Radio Power Management (2)
• Enables to put inaccessible or unused radios into lower power
states (Off or Deep-sleep)
• Enables to activate the deactivated radios when required
• Within coverage area, application requirement, network
capacity
• Enables to select best radio and its corresponding power state
for an application service
• Enables to minimize the time in accessing the network when
activating a radio
• Acquiring configuration parameters to access the network in
advance
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Multi-Radio Power Management (3)
Single radio
Power
Multiple radios
Power
Multiple radios with MRPM
Power
negligible
Battery life
negligible
Battery life
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Battery life
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Multi-Radio Power Management (4)
Network
Selection
Policy
Control
Multi
Interface
Control
Operator
Policy
QoS
Resource
operates in
Management
a power efficient
way!
MIH
(Neighboring
Network
MAP)
WiFi
MRPM
- Device power
characteristics
- Each I/F status
(power state)
WiMAX
Mobile Node
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3GPP
Power States
Power States Control
MRPM
-Location
-Network Accessibility
MIH
Radio
(WiFi, WiMAX, 3GPP)
Network Node
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Contents
•
Overview
•
Power Management Problems
•
MRPM Principle
•
MRPM Use cases
1. Minimizing Power Consumption
2. Network Selection
3. Lowest power configuration
4. Use of deep sleep state
•
Existing power management in individual radio technology
•
Basic MIH capabilities
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Use Case #1. In Service
Each radio controlled independently
Power
• Multiple radios are active for
application services
• Primary Radio MAY be mainly
utilized for application services
• Unutilized radios are put into Off
or Deep-Sleep
In service
Sleep
In service
Potential MRPM solution
Power
In service
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Deep Sleep Off or Deep Sleep
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Use Case #2. No Service
Power
Each radio controlled independently
• Multiple radios are in sleep states
consuming unnecessary power
• Unutilized radio is put into Off or
Deep-Sleep
Idle
Power
Sleep
Sleep
Potential MRPM solution
Idle
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Off or
Deep Sleep
Off or
Deep Sleep
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Use Case #3. Single Idle State
Power
Each radio controlled independently
• Multiple radios are in idle states
• Primary radio may be utilized for
paging
Idle
Power
Sleep
Idle
Potential MRPM solution
Idle
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Off or
Deep Sleep
• Unnecessary idle state radio is put
into deep sleep or off state
• Out of coverage area
• Coverage overlap
• Location management through
single idle state radio
Off or
Deep Sleep
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Case 4 Illustration of Use Cases
TAU to 3GPP
paging controller.
3GPP
Tracking Area
Cell 5
WiMAX is
turned-off
AP 5
Use Case #3
MRPM
Cell 6
WiMAX
Paging Area B
AP 6
3GPP
Paging
Controller
WiMAX
Paging Controller
WiFi is
turned-off
WiMAX
Paging Area A
Cell 4
Use Case #2
AP 4
WiFi into PSM
Cell 3
Cell 1
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AP 1
AP 3
Cell 2
AP 2
Multiple Active
Radios
Single Active
Radio
Application is terminated
Use Case #1
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Contents
• Overview
• Power Management Problems
• MRPM Principle
• MRPM Use cases
• Existing power management in individual radio technology
• Basic MIH capabilities
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802.21 media independent handover
(MIH) services
Service
Event
MIP
Service
Command
Service
Information
Service
Event
Service
Command
Service
HMIP
LLC_SAP
LLC_SAP
Network 1
(e.g., 802.16)
MIH_LINK_SAP
MIH
Function
SIP
MIH_LINK_SAP
MIH_SAP
Information
Layer 3 and
Above Layers
Network 2
(e.g., 3GPP)
Handover
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802.21 MIH at devices and at networks
enables collaboration between them
Higher Layer
Higher Layer
MIH_NET_SAP
MAC
MIHF
Logical
Connection
between
peer nodes
MIHF
MIH_NET_SAP
IP
IP
MAC
PHY
PHY
802.11u
802.16g
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MRPM
• PAR/5C is at:
• https://mentor.ieee.org/802.21/file/08/21-09-0021-00-mrpmrevised-par-and-5c.doc
• Feedback:
• [email protected]; [email protected];
• [email protected]
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Thank you
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