1. Band segmentation for S-BCH to increase cell coverage Document Number: IEEE C802.16m-08/1111r1 Date Submitted: 2008-09-05 Source: Bin-Chul Ihm, Youngsoo Yuk, Sunam Kim and Jeongki KimVoice:+82-31-450-7187 LG ElectronicsE-mail: {bcihm, sixs, snkim816,chegal}@lge.com * http://standards.ieee.org/faqs/affiliationFAQ.html Venue: PHY: Text, in response to the TGm call for comments 802.16m-08/033 for session 57, Specific Topics 11.7 Downlink Control Structure Base Contribution: None Purpose: Discussion and approval by TGm for the 802.16m SDD 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 IEEEs name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEEs 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. Robust transmission of SBCH Since the SDD describes that SBCH carries essential system parameters and system configuration information, SBCH shall be transmitted very robust to satisfy the cell coverage requirement. SBCH carries sector specific information Two alternatives for robust transmission of sector specific SBCH QPSK 1/N without band segmentation QPSK 3/N with 3 bands segmentation, each of which has 4.7dB boosted power per tone Sector #1Sector #2Sector #3 vs Sector #1Sector #2Sector #3 RBs used for SBCHRBs used for dataRBs used for Null Tx

3. Simulation Assumption ParametersValue Cell19 cell (3sector/cell) wrap around ISD0.5Km, 1.5Km BW5MHz Sub-channelLocalized mode Channel model ITU PedB 3km/h ITU VehA 120Km/h Mand-mixed (PedB 3km/h(60%), VehA 30Km/h(30%) VehA 120Km/h(10%) Antenna configuration 2 Tx antennas of 4 lambda spacing with AoD based spatial correlation 2 Rx antennas Tx scheme Turbo code 1/4 QPSK w/ segmentation Turbo code 1/12 QPSK w/o segmentation MIMO schemeSFBC

4. Simulation Results Coverage @ 0.5Km ISD Coverage @ 1.5Km ISD Observations Coverage means the portion of users in a sector experiencing lower than 1% PER. Bands segmentation provides 1.5%~4.8% coverage increase

5. Text Proposals [Add the following text at the end of 11.7.2.2.5 Resource allocation in page 61] Predetermined N PRUs in the first subframe within a superframe are used for transmission of SBCH. SBCH in each sector is transmitted through sector specific PRUs among these N PRUs. The remaining PRUs not used for transmission of SBCH does not transmit any signal.