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IEEE 802.21 MEDIA INDEPENDENT HANDOVER

Title: Multi-Radio Power Conservation Management (MRPM)

Date Submitted: March 3 2009

Presented at IEEE 802 plenary in Vancouver

Authors or Sources: Dennis Edwards, Behcet Sarikaya, James Han, Junghoon Jee, Anthony Chan

Abstract: 802.21 MRPM Tutorial

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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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• 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)

Multi-Radio Activities in IEEE 802.21

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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

802.11802.11802.16

3GPP;3GPP2

+–

+–

+–

Different technologies have different modes of operation each with different power consumption

802.11802.11802.16

3GPP;3GPP2

+–

Drains battery fast if power consumption is optimized only within each individual technology

Service Standby Sleep Battery life (approx. # only for cellular )

1 radio R1 2 hrs (talk time)

1 radio

2 radios

3 radios

R1 24 hrs (customer expectation)

R1,R2 12 hrs

R1,R2,R3 8 hrs

1 radio

2 radios

3 radios

R1 6 days (customer expectation)

R1,R2 3 days

R1,R2,R3 2 days

Power

Battery life

Power

Battery life

R1 R2 R3R1

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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)

Power

Battery life

Power

Battery life

Power

Battery life

negligible

negligible

Single radio Multiple radios Multiple radios with MRPM

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Multi-Radio Power Management (4)

MIH(Neighboring Network MAP)

MRPM- Device power characteristics- Each I/F status (power state)

WiMAXWiMAXWiFiWiFi 3GPP3GPP

MIH MRPM-Location-Network Accessibility

PolicyControlPolicy

Control

MultiInterfaceControl

MultiInterfaceControl

NetworkSelectionNetworkSelection

Radio(WiFi, WiMAX, 3GPP)

Radio(WiFi, WiMAX, 3GPP)

ResourceManagementResource

Management

QoS QoS Operator Policy

Operator Policy

Power StatesPower States

Power States ControlPower States Control

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Contents

• Overview

• Power Management Problems

• MRPM Principle

• MRPM Use cases1. Minimizing Power Consumption2. Network Selection3. Lowest power configuration4. Use of deep sleep state

• Existing power management in individual radio technology

• Basic MIH capabilities

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Use Case #1. In Service

• Multiple radios are active for application services

• Only one active radio can be utilized for application services

• Unutilized radios are put into Off or Deep-Sleep

Power

In service Sleep In service

Power

In service Off or Deep Sleep

Each radio controlled independently

Potential MRPM solution

Deep Sleep

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Use Case #2. No Service

Power

Idle Sleep Sleep

Power

Idle Off or Deep Sleep

Off or Deep Sleep

• Multiple radios are in sleep states consuming unnecessary power

• Unutilized radio is put into Off or Deep-Sleep

Each radio controlled independently

Potential MRPM solution

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Use Case #3. Single Idle State

Power

Idle Sleep Idle

Power

Idle Off or Deep Sleep

Off or Deep Sleep

• Multiple idle state radios are in sleep states controlled independently

• 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

Each radio controlled independently

Potential MRPM solution

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Case 4 Illustration of Use Cases

WiMAXPaging Area BWiMAXPaging Area B

3GPPTracking Area3GPPTracking Area

AP 6

AP 5Cell 5

Cell 6

TAU to 3GPP TAU to 3GPP paging controller.paging controller.

Cell 1Cell 2

Cell 3

Cell 4

AP 1AP 2

AP 3

AP 4

Multiple Active Multiple Active RadiosRadios

WiMAX Paging Area AWiMAX Paging Area A

Application is terminatedApplication is terminated

WiFi into PSMWiFi into PSM

WiFi is WiFi is turned-offturned-off

WiMAX is WiMAX is turned-offturned-off

Single Active Single Active RadioRadio Use Case #1

Use Case #2

Use Case #3

MRPM

3GPP 3GPP Paging Paging

ControllerController

WiMAX WiMAX Paging ControllerPaging Controller

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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

MIH Function

MIH

_SA

P

Network 2(e.g., 3GPP)

Network 1 (e.g., 802.16)

MIH

_LIN

K_S

AP

MIH

_LIN

K_S

AP

LLC_SAP

Handover

Event

ServiceCommand

Service

Information

Service

Command

Service

Event

Service

Information

Service

LLC_SAP

SIP

MIP HMIP

Layer 3 and Above Layers

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802.21 MIH at devices and at networksenables collaboration between them

802.11u802.16g

Higher Layer

IP

MAC

PHY

Higher Layer

IP

MAC

PHY

MIHFM

IH_

NE

T_

SA

PMIHF

MIH

_N

ET

_S

AP

Logical Connection

between

peer nodes

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MRPM

• PAR/5C is at:

• https://mentor.ieee.org/802.21/file/08/21-09-0021-00-mrpm-revised-par-and-5c.doc

• Feedback:

• anthonychan@huawei.com; jhjee@etri.re.kr;

• STDS-802-21@LISTSERV.IEEE.ORG

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Thank you