1. 1 Contents Design on BCH Document Number: IEEE C802.16m-09/0327r1 Date Submitted: 2009-01-07 Source: Doo-hyun SungE-mail : dh.sung@lge.com Heejeong Cho Jinsoo Choi Kiseon Ryu Ronny(Yong-Ho) Kim LG Electronics Re: IEEE 802.16m-08/053r1-Call for Comments and Contributions on Project 802.16m Amendment Working Document, on the topic of DL PHY Control Structure Base Contribution : IEEE 802.16m-08/003r6 Purpose: To provide the details on BCH contents proposed in the amendment text of DL PHY Control Structure 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. Outline (1/2) Focusing DL control information in 11.7.1 section of the SDD InformationChannel Synchronization informationPSCH, SSCH Essential system parameters and system configuration information PBCH, SBCH Extended system parameters and system configuration information Additional Broadcast Information on TCH Control and signaling for DL notifications Control and signaling for trafficUSCCH

3. Outline (2/2) Essential system parameters and system configuration information –This includes a minimal set of time critical system configuration information and parameters needed for the mobile station (AMS) to complete access (system acquisition). In this contribution, we provide more details for information contents transmitted carried on the BCH (PBCH and SBCH)

4. PBCH (1/5) Periodicity of one super frame (20ms) Total length of 56 (40+16) bits including CRC 16bits Contents Syntax Size (bit) Notes Super frame number22 sub-SBCH scheduling information 6sub-SBCH1~6 Change count (common)8 Change toggle bitmap4sub-SBCH1~4 Configuration information of sub-SBCHs

5. PBCH (2/5) Configuration information of sub-SBCHs –Scheduling information of sub-SBCHs Indicate sub-SBCH type to be transmitted within the super- frame No frequency-domain resource allocation information present –AMSs are able to estimate the length of each sub-SBCH. –Example) if sub-SBCH 1 and 3 are transmitted, Sub- SBCH1 Sub- SBCH2 Sub- SBCH3 Sub- SBCH4 Sub- SBCH5 Sub- SBCH6 101000

6. PBCH (3/5) Configuration information of sub-SBCHs –Change count Increase by 1 only when one or more sub-SBCHs (sub- SBCH1~4) change within the super-frame –Change toggle bitmap Indicate the changed sub-SBCH type 1~4 –No need to assign change toggle bitmaps for sub-SBCH 5, 6 »sub-SBCH5: Paging indication »sub-SBCH6: SI of additional broadcast information If sub-SBCH 1 and 4 change, 1010 0011 toggle

7. PBCH (4/5) Decode PBCH Difference between previous CC and current CC in PBCH Not decode any sub-SBCH Check Toggle bitmap in the received PBCH and Toggle bitmap stored at MS Decode all sub-SBCHs CC difference is larger than 1 Decode sub-SBCHs for the corresponding toggle bits Updating for the BCH –Overall procedure CC difference is 1 CC difference is 0

8. PBCH (5/5) Super-frame SI:111000 CC:25 CTB:0000 PBCH Sub-SBCH 1 Example of updating the SBCH Sub-SBCH 2 Sub-SBCH 3 SI:111000 CC:26 CTB:0110 Change SI:110000 CC:26 CTB:0110 SI: Scheduling Information CC: Change Count (common) CTB: Change Toggle Bitmap

9. SBCH (1/10) The SBCH is divided into 6 sub-SBCHs Each sub-SBCH may be scheduled –with a periodicity of multiple super-frames OR –non-periodically depending on BS’s scheduling

10. SBCH (2/10) Sub-SBCH 1 –Parameters that determine the exact size of other sub-SBCHs’ size –Example If BS type == 0b11 –Additional CSG ID field will be reserved in sub-SBCH2 –The size of sub-SBCH2 enlarges as much as CSG ID field Else –No CSG ID field will be reserved in sub-SBCH2 Syntax Size (bit) Notes BS type2 0b00: Macro 0b01 : Relay 0b10 : OSG femto 0b11: CSG femto Number of BS antennas2 Number of frequency partitioning (FPCT_DL) for DL 2 Number of frequency partitioning (FPCT_UL) for UL 2 Same Target IoT Indicator (STII) for UL frequency partitions 1 0b0: IoT adjustment per frequency partition 0b1: common IoT adjustment Number of paging groupsTBD DL/UL ratio4 Duplex mode1 0b0: TDD 0b1: FDD/H- FDD

11. SBCH (3/10) Sub-SBCH 2 –Parameters related to the basic configuration for transmission Syntax Size (bit) Notes BS ID48 NSP ID16 CP size2 TTG16 RTG8 System bandwidth3 PHY version information3 MAC version information3 Network entry enabling1 USCCH configuration information TBD MBS region information3 HARQ related informationTBD if (BS type == 0b11) { [CSG ID][24] }

12. SBCH (4/10) Sub-SBCH 2 (cont’) –Parameters related to the basic configuration for transmission Syntax Size (bit) Notes if (Duplex mode == 0b1) { UL center frequency2 UL bandwidth4 } for (i=0; i<Number of paging groups; i++) { Paging group IDTBD }

13. SBCH (5/10) Sub-SBCH 3 –Parameters related to bandwidth request and ranging Syntax Size (bit) Notes BR channel allocation periodicity 2 BR subframe allocation bitmapTBD BR resource start offset7 BR resource frequency duration 3 Initial / final backoff window size (for BR, Periodic/ Initial ranging) TBD Ranging channel formatTBD Ranging channel for non- synchronized AMSs Preamble informationTBD Time/frequency allocationTBD Ranging channel formatTBD Ranging channel for synchronized AMSs Preamble informationTBD Time/frequency allocationTBD

14. SBCH (6/10) Sub-SBCH 4 –Parameters related to DL/UL resource configuration and UL FFR & power control configuration Syntax Size (bit) Notes Number of reserved subbands (K SB_DL ) for DL 5 if (FPCT_DL != 00) { Frequency partition size (FPS_DL) for DL 6 Frequency partition subband count (FPSC_DL) for DL 4 } for (i=0; i<FPCT_DL; i++) { FPCT_DL={1, 2, 3, 4} CRU/DRU allocation information for DL [6] }

15. SBCH (7/10) Sub-SBCH 4 (cont’) –Parameters related to DL/UL resource configuration and UL FFR & power control configuration Syntax Size (bit) Notes Number of reserved subbands (K SB_UL ) for UL 5 if (FPCT_UL != 00) { Frequency partition size (FPS_UL) for UL 6 Frequency partition subband count (FPSC_UL) for UL 4 } for (i=0; i<FPCT_UL; i++) { FPCT_UL={1, 2, 3, 4} CRU/DRU allocation information for UL [6] }

16. SBCH (8/10) Sub-SBCH 4 (cont’) –Parameters related to DL/UL resource configuration and UL FFR & power control configuration Syntax Size (bit) Notes Noise & interference level informationTBD Cell common power offset (Offset perABS ) TBD Default target IoT level for UL frequency partitions 4 if (FPCT_UL==00) { Alpha value for power controlTBD Adjustment of target IoT value3 } else { for (i=0; i<FPCT_UL; i++) { Alpha value for power controlTBD } if (STII==0) { for (i=0; i<FPCT_UL; i++) { Adjustment of target IoT value3 } } else { Adjustment of target IoT value3 } }

17. SBCH (9/10) Sub-SBCH 5 –Scheduling information of paging indication Syntax Size (bit) Notes for (i=0; i<Number of paging groups; i++) { Paging group IDTBD Paging indicator4 Indication per frame } Super-frame SI:000010 CC:32 CTB:0000 PGID:A PI:0110 Frame PBCH Sub-SBCH 5 Paging MSG

18. SBCH (10/10) Sub-SBCH 6 –Scheduling information of additional broadcast information Additional Scheduling information –Indicate additional broadcast information types to be transmitted within the super-frame –MS can know the number of additional broadcast information types transmitted within the super-frame Start position –Transmission position of the additional broadcast information type to be first transmitted within the super-frame SyntaxSize (bit)Notes Additional scheduling informationTBDbitmap Start positionTBD