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IEEE 802.21 MEDIA INDEPENDENT HANDOVER

Title: Multi-Radio Power Management

Date Submitted: September, 2007

Presented at IEEE 802 September 2007 Interim in Hawaii

Authors or Source(s): Behcet Sarikaya (Huawei),

Abstract: 802.21 Multi-Radio Power Management SG technical report

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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 outlined in Section 6.3 of the IEEE-SA Standards Board Operations Manual <http://standards.ieee.org/guides/opman/sect6.html#6.3> and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/guide.html> 

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802.21 Multi-Radio Power Management Study Group

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Overview

• Requirements

• Architecture

• Scenarios

• PAR and 5C

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MRPM SG TR

• Technical report on MRPM SG is available on line

• It is for discussion and modification

• Please comment

• Submit contributions

• Participate in discussions

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Requirements

• Signaling gains.• MRPM shall provide signaling gains on the air

interface compared with single radio systems. MRPM also shall provide signaling gains in the network

• Power Gains• The standard shall reduce the power consumption on

the mobile terminal compared with single-radio systems

• The power gains from paging on the active interface• The power gains on the location updates on the

active interface• Power gains on the idle mode signaling of various

interfaces using a single interface • Information Discovery

• The standard shall provide services to obtain information needed during idle mode operation. These services shall include mechanisms to obtain detailed information about each interface parameters of the mobile station

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Requirements

• Security• The standard shall provide a means to securely

signal idle mode entry/exit, paging request and location update requests. The messages will have regular and secure versions. These messages may be obtained from the existing single-radio messages by certain extensions that will be defined in the standard

• Power Management • The standard shall support effective device

power management by employing battery efficient network scanning procedures. Wherever applicable the standard shall select network scanning opportunities to coincide with scheduled wake times to minimize the expended power by switching between the active and power save modes of operation for the wireless media employed

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Architectural Elements

• Architecture is based on 802.21

• MRPM is viewed as an extension of 802.21

• Architectural Elements:

• MRPM Enabled MIH Function

• MRPM Enabled Information Server (MRPM-IS)

• MRPM Paging Agent (MRPM-PA) and

• MRPM Paging Coordinator (MRPM-PC)

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Architecture

• MRPM PA: AP/ BS

• MRPM PC

• MRPM Enabled Information Service

MRPM - PC

MRPM PA

MRPM PA

Radio 1

Radio 2

MS

MRPM - PC

MRPM Enabled IS

Multi-Radio Power Management Service Flow

MRPM PA

MRPM PA

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Reference Model

• 802.21 layering

SIP MIPv4 MIPv6Multi-Radio Power

Management Application

802 . 16 3GPP

Multi-Radio Power Management Enabled MIHF

High layer

Lower Layer

MIH ES MIH CS MIH IS

Link Events

Link Commands

Information Service

3GPP2802.11

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Scenarios

• Paging on active interface.

• Location update on active interface.

• Idle mode signaling for multiple interfaces

• Other scenarios.

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Paging on Active Interface• Example: User is browsing on the Wi-Fi interface, User gets a VoIP call on the WiMAX interface, WiMAX network needs to page the user

• Wake up WiMAX interface using Wi-Fi

MS_aBS/AP

of radio r_kPC

of radio r_kPC

of radio r_i

1a

PC of r_j

Is your radio in connected mode in MS_a?

Is your radio in connected mode in MS_a?

Inter PC co-ordination

2

1b

3

5

4

•BS/AP Paging Announcement Primitives: IEEE 802.21

•MS receiving Paging Announcement Primitives: IEEE 802.21

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Location Update on Active Interface

• Example: User has WiFi connection that is currently active and WiMAX connection that is idle

Instead of contending on the WiMAX airlink, MS uses the Wi-Fi radio to perform location update for its WiMAX radio

BS/AP of radio r_i

LU for r_k (sent on radio r_i)

PC of radio r_i

PC of radio r_k

LU for r_k (sent on radio r_i)

LU_RSP for MS

LU_RSP for MS (sent on r_i)

•BS/AP Location Update Request/Response Primitives: IEEE 802.21

•MS Location Update Request/Response Primitives: IEEE 802.21

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Idle Mode Signaling

• Example: Multiple radios are being switched to idle mode• For example: when the user takes a break, his WiMAX, WiFi and 3G connections may go into idle mode

• IM Entry/Exit for radios i, j , k happens on radio-i

MSBS/AP

of radio r_i

IM_entry for r_i, r_j, r_k (sent on radio r_i)

PC of radio r_i

PC of radio r_j

PC of radio r_k

IM_entry for MS on r_i, r_j, r_k (sent on radio r_i)

IM_entry for MS

IM_entry for MS

1

2

3

4

IM_entry_RSP for MS (paging parameters for r_j)

IM_entry_RSP for MS (contains paging params for r_k)

5

6

IM_entry_RSP for MS(paging params for r_i,j,k)

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IM_entry_RSP for MS(paging params for

r_i,j,k)8

•MS Enter/Exit Idle Mode Request/Response Primitives: IEEE 802.21

•BS/AP Enter/Exit Idle Mode Request/Response Primitives: IEEE 802.21

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PAR & 5C

• Proposal is to work on drafting PAR and 5C

• Discuss them on Thursday

• Improve them in calls during September-October 2007

• Work on a tutorial on MRPM

• Need volunteers and contributions

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Q & A?