1. 1 IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-08-0075-00-MRPM Title: Media Independent Power Management for Fixed Terminals Date Submitted: March, 2008 Presented at IEEE 802.21 March 17-20 at Orlando Authors or Source(s): Frank Xia, Behcet Sarikaya, H Anthony Chan (Huawei) Abstract: This presentation proposes to introduce Media Independent power management mechanism to fixed terminals, such as LAN Switch, DSL Modem, Cable Modem, and PC etc. The motivation is first described.

2. 2 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 and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/guide.html> Section 6.3 of the IEEE-SA Standards Board Operations Manualhttp://standards.ieee.org/guides/opman/sect6.html#6.3 http://standards.ieee.org/board/pat/guide.html

3. 3 Green telecom movement is ongoing ITU SG15 “to reduce greenhouse gas emissions by implementing energy saving techniques in its standardisation work programme by focusing on the goals of reduced power consumption and energy efficiency” BT (British Telecom) commitment: 80% CO2 reduction by 2016 from 1997 base IEEE 802.3az Energy-efficient Ethernet Task Force …

4. 4 How much money wasted by fixed terminals a year? 60 million families in US using network device. 3 fixed terminals per family Average power consumption is 10 watt per fixed terminal Average idle time is 10 hours per day US accounts for 1/5 of the global telecom market share. Family =3*10(Watt)*10(hours)*365(days)*0.000058 ($ per watt) = $6.351 US in total: 60 Million*6.351 =$381.06 Million Global total: 381.06 Million*5 = $1.9053 Billion

5. 5 Why use 802.21 messages Standardize messages for DSL, cable modem, wireless and wireline access; compatibility. Media Independent Function Power Management Media Independent Function MIH_SAP Network Layer2_SAP MIH_LINK_SAP Fixed Terminal, e.g., PC, switch, DSL modem, cable modem, etc. Network device one link up 1. deregister request 3. synchronization 5. wake up 7. register 2. deregister confirm 4. traffic arrives 6. wake-up process

6. 6 Media Independent Power Management for Fixed Terminal 1.A fixed terminal signals its intent to begin Idle mode by sending Deregister Request. 2.A network device sends Deregister Indication message to verify the reception of the Deregister Request message. 3.The network device sends Synchronization message periodically. The terminal has a Discontinuous Reception (DRX) module, and the terminal uses it in IDLE mode. This module wakes up periodically to check for power management messages. 4.Some service traffic destined to the fixed terminal arrives. 5.The network device sends a wake-up indication message 6.If the Synchronization message arrives, the terminal just synchronizes its clock with the network device. If wake-up indication message arrives, the DRX modular wakes up the terminal, and the terminal processes the incoming traffic. 7.After waking up, the fixed terminal sends a register message to indicate that the network device can send service traffic now. 6 Wake-up Process 1 Deregister Request 2 Deregister Indication 3 Synchronization 5 Wake-up Indication Fixed Terminal Network device 4 Service traffic 7 Register

7. 7 Features needed Standardized messages to register, de-register, synchronize, wake up. Yet similar messages will likely be needed in MRPM. Each device needs to support sleep mode and these MRPM messages.

8. 8 Layer 2 requirement (e.g. Ethernet) New protocol type is needed to be defined in IEEE802.3 to support Media Independent Fixed Terminal Power Management

9. 9 Thank You! Comment?