Notification of SFH Updating (16.2.3.14) Document Number: IEEE C80216m-09/2907 Date Submitted: 2009-12-31 Source: Yih-Shen Chen, Kelvin Chou and Paul Cheng.

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Notification of SFH Updating ( ) Document Number: IEEE C80216m-09/2907 Date Submitted: Source: Yih-Shen Chen, Kelvin Chou and Paul Cheng MediaTek Inc. Re: IEEE /0073, “IEEE Working Group Letter Ballot#30b” Base Contribution: This is base contribution Purpose: Propose to be discussed and adopted by TGm for the m Amendment Notice: This document does not represent the agreed views of the IEEE Working Group or any of its subgroups. It represents only the views of the participants listed in the “Source(s)” field above. It is offered as a basis for discussion. It is not binding on the contributor(s), who reserve(s) the right to add, amend or withdraw material contained herein. Release: 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 Patent Policy: The contributor is familiar with the IEEE-SA Patent Policy and Procedures: and. Further information is located at and.

2 Introduction To sustain normal network operations, serving ABS broadcasts and adjusts its configuration via system information updating –The critical information is broadcasted via P-SFH/S-SFH IEs in m To perform handover, serving ABS allocates a time interval for cell scanning –AMS scans the neighboring cells during unavailable time intervals –AMS resumes the normal data transmission during available time intervals For sleep mode control, the timing of sleep mode control is –Frame-based operation as baseline –Subframe-based operation is also supported if configured ( ) E.g., VoIP –Note that, the timing of SFH broadcasting is superframe-based operation

3 Problem Description (1/2) (Problem #1): What if the system information is required to be updated while AMS is in the unavailable interval? –AMS may not get the up-to-date system information ex: BR information, FFR information To solve the problem, section of D2 states that: –…. If Scan Duration field contains a non-zero value, the system parameters which are carried through SFH shall not be changed during whole scanning duration specified in the AAI_SCN-RSP message. ….

4 Problem Description (2/2) However, the problem is –less flexibility of system information updating It’s hard to know when AMS requests for scanning in advance It’s not a reasonable design to postpone the SFH updating just because an AMS is performing scanning operation! –System information updating is related to cell-wide/network- wide configuration (Problem #2): What if AMS wakes up in the middle of SFH transmission interval? –The time units of SFH and SLP operation are different AMS can wake up earlier to decode SFH and go back to micro-sleep for power saving –But, it wastes power anyway

5 Proposed Solution BS broadcasts an indication message (e.g., AAI_SFH_IND) to announce that system information updating will happen soon –The behavior is similar to dynamically broadcast P-SFH to announce the updating information Once an AMS decodes the message, it figures out that system information is going to be updated –For AMS under scanning operation: It can get the indication message during available time interval It finds time to read the SFH updating –It can use some unavailable interval or available interval to decode SFH information »SFH appears periodically! –For AMS under sleep mode operation: It can keep waking up to decode SFH

6 Example of the Proposed Method

7 Conclusion SFH content update contains two steps: –Notification of SFH update –Update mechanism of SFH content In this contribution, we propose a method for notifying SFH update –It can further enhance the performance of power saving, especially for subframe-based VoIP applictions

8 Proposed Text (1/2) Modify the text in

9 Proposed Text (2/2) Add a new section