1. IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-07-0410-00-0000
Title: Multi-Radio Power Management Consideration
Date Submitted: November, 09, 2007
Presented at IEEE session #23 in Atlanta
Authors or Source(s):
Yoon-Young An,  Junghoon Jee
Abstract: This contribution proposes the MIH services extension for MRPM.

2. IEEE 802.21 presentation release statements
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The contributor is familiar with IEEE patent policy, as stated in Section 6 of the IEEE-SA Standards Board bylaws < and in Understanding Patent Issues During IEEE Standards Development
IEEE presentation release statements
This document has been prepared to assist the IEEE 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
The contributor is familiar with IEEE patent policy, as outlined in Section 6.3 of the IEEE-SA Standards Board Operations Manual < and in Understanding Patent Issues During IEEE Standards Development

3. Problem Statement Location Management Overview
Location Update(LU): Occurs on either periodic intervals or upon every cell exchange.
Paging : When a call arises toward a user, the network must page cells within the Location Area.
Multi-Radio Power Management Problem Statement
Paging and Location Update of multimode terminal are performed for each network interface.
No cooperation among network interfaces under considering the power consumption.
If each interface performs the Paging and Location Update independently, the overall power consumption of the mobile terminal increases.
There needs coordination and control among network interfaces of multimode terminal in performing Paging and Location update in heterogeneous multi radio environment.

4. Location Management for Multimode Terminal
Maximum utilization of the active state interface
Location update and Paging support for the idle state interface
Maximum utilization of the low power consumption interface
Location update and Paging support for the high power consumption interface

5. MRPM Application State Management of multiple network interfaces
Consideration of an network interface where paging is not supported

6. Example for MRPM Application
Assumption
Power consumption : WiFi > WiMAX > 3GPP
WiFi : No paging
Selection rule : High Priority to lower power consumption interface
WiFi
WiMax
3GPP
State
Operation
Sleep
sleep mode operation
Idle
Disable
Paging and LU for all Interfaces
Active
Paging and LU No
Paging and LU for WiFi

7. MIH Services Extension
In a mobile terminal with multi-radio interfaces, one interface is selected for power management by MRPM application (MIH user).
MRPM in MIH user needs the MIH services extension.
MIH Information Service perspective
MIH user requests and responses the policy and configuration information for MRPM.
Need new information elements.

8. MIH Services Extension (2)
MIH Event service perspective
Provides the change of power state from each interfaces.
Sleep mode, Idle mode, Active mode
Informs paging for another interface.
Paged interface
Need new primitives
MIH Command service perspective
MIH user sends the command for MRPM to selected interface.
Power management Disable/Enable ….
Sends command for power mode change(Idle=>Active) to called interface

9. Proposal
Please incorporate the MIH services extension into section 5.1 of the by referencing the accompanying contribution, MRPM_Consideration.doc.