1. Proposed Text on Broadcast Assignment A-MAP IE (16.3.6.5.2) IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-09/3022 Date Submitted: 2009-12-31 Source: Hyunkyu Yu, Yeongmoon Son, Sung-Eun Park,Voice:+82-31-279-4964 Hyunjeong Kang, Mihyun LeeE-mail:hk.yu@samsung.com Samsung Electronics Co., Ltd 416 Maetan-3, Suwon 443-770, Korea Venue: Comments on IEEE P802.16m/D3 for IEEE 802.16 Working Group Letter Ballot Recirc #30b Area: “16.3.6 Downlink control structure”. Base Contribution: None Purpose: To be discussed and adopted by the IEEE 802.16 Working Group. Notice: This document does not represent the agreed views of the IEEE 802.16 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 802.16. Patent Policy: The contributor is familiar with the IEEE-SA Patent Policy and Procedures: and.http://standards.ieee.org/guides/bylaws/sect6-7.html#6http://standards.ieee.org/guides/opman/sect6.html#6.3 Further information is located at and.http://standards.ieee.org/board/pat/pat-material.htmlhttp://standards.ieee.org/board/pat

2. Intro.  Current Design Broadcast assignment A-MAP for broadcast burst allocation All broadcast MAC control messages to be transmitted in a AAI subframe shall be included in a broadcast burst.  Need to Decide (1) IE contents for Broadcast assignment A-MAP (2) Location of Broadcast assignment A-MAP (3) Transmission format for Broadcast assignment A-MAP

3. IE Contents (1/2)  Information Element [A-MAP IE Type: 4 bits] May not be required if TBCC code rate of Broadcast assignment A-MAP IE is different from that of assignment A-MAP IE. Resource index: 11 bits MCS (I SizeOffset ) Recommend implicit signaling

4. IE Contents (2/2)  MCS (1)Need to consider both reuse 1 and reuse 3 (2) The lowest code rate of CTC (≈1/12) is enough to meet 5% outage requirement in reuse-1?  Cannot meet requirement in EMD baseline test scenario (Appendix)  (Proposal) use additional code rate of ≈1/24 (3) Explicit or Implicit indication?  (Proposal) implicit method: mapping to S-SFH code rate (not defined in D3)

5. Location of Broadcast A-A-MAP  (Proposal) Assignment A-MAP In primary frequency partition, only one Broadcast A-A-MAP IE is present at the beginning of either group 1 or group 3 in A-A-MAPs, if exist.

6. Text Proposal [Remedy 1: Add the following text after line 48, page 369, 16.3.6.2.2.4] ----------------------------------------------------- Text Start ---------------------------------------------------- In primary frequency partition, a Broadcast assignment A-MAP IE is present at the beginning of either group 1 or group 3 in assignment A-MAPs, if exist. ----------------------------------------------------- Text End -----------------------------------------------------

7. Text Proposal [Remedy 2: Modify the following text in line 16, page 443.] ----------------------------------------------------- Text Start ---------------------------------------------------- 16.3.6.5.2.4.13 Broadcast Assignment A-MAP IE … Table 829—Broadcast Assignment A-MAP IE* SyntaxSize in bitsDescription/Notes Broadcast_Assignment_A- MAP_IE() { A-MAP IE Type4Broadcast Assignment A-MAP IE MCS (TBD)TBD Resource Index11 5 MHz: 0 in first 2 MSB bits + 9 bits for resource index 10 MHz: 11 bits for resource index 20 MHz: 11 bits for resource index Resource index includes location and allocation size. Long TTI indicator1 Indicates number of AAI subframes spanned by the allocated resource. 0b0: 1 AAI subframe (default) 0b1: 4 DL AAI subframes for FDD or all DL AAI subframes for TDD ReservedTBDReserved bits }

8. Text Proposal *A 16 bit CRC is generated based on the contents of the Broadcast Assignment A-MAP IE The broadcast message signaled by the Broadcast A-MAP IE is always transmitted using SFBC as the MIMO encode format. Resource Index field is interpreted as in the DL Basic assignment A-MAP IE, except for allocation of size 1 and 2 LRUs. Allocation of size 1 and 2 LRUs is not allowed for broadcast data bursts. When calculating the burst size of broadcast data burst, I SizeOffset is implicitly indicated based on code rate of S-SFH and frequency partition index as shown in Table yyy. Table yyy—Burst size of Broadcast data burst Code rate of S-SFH I SizeOffset or Burst size (Reuse 1 FP)I SizeOffset (Boosted Reuse 3 FP) 1/12I SizeOffset = 0I SizeOffset = 9 1/24 Burst size to allocation size mapping is defined in Table zzz I SizeOffset = 3

9. Text Proposal Table zzz—Burst size to allocation size mapping ----------------------------------------------------- Text End ----------------------------------------------------- Allocation size Burst size Allocation size Burst size Allocation size Burst size Allocation size Burst size 6617 44 114 8819 50 128 9922 57 144 10 25 64 164 11 27 71 180 12 31 80 13 36 90 15 40 100

10. Analysis on Code Rate of Broadcast Burst Appendix

11. Summary  Method LLS curves: Find SNR value (x) at 1% FER Geometry distribution: Find SNR value (y) at 5% CDF If x>y: outage requirement is NOT satisfied. Else (x<=y): outage requirement is satisfied.  Results x = -3.5 Y = -3.7 (EMD baseline), -5.6 (Open rural macro) In EMD baseline and Open rural macro, the current lowest code rate CANNOT meet the requirement

12. Result-1: LLS Performance  In LLS curves, Find SNR value at 1% FER Around -3.5 dB ParameterValue Bandwidth10 MHz MIMO scheme2x2 SFBC Sub CH.DRU ModulationQPSK FECCTC 1 LRU18 x 5 Burst sizeCode rate# of LRUs 48 (bits)1/103 641/104 2889/8016

13. Result-2: Geometry Distribution  In Geometry distribution, Find SNR value at 5% CDF Test ScenarioSNR@5% (dB) InH2 UMi-2.5 UMa-2.8 RMa-1.9 EMD baseline-3.7 Open rural macro (5km-radius) -5.6