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Contents : IEEE C802.16m-08/041 Project IEEE 802.16 Broadband Wireless Access Working Group http://ieee802.org/16 Title Proposal for IEEE 802.16m Frame Structure for Single Band Operation Date Submitted 2008-01-16 Source(s) Mo-Han Fong Jianglei Ma Sophie Vrzic Kelvin Au Robert Novak Jun Yuan Dongsheng Yu Anna Tee Sang-Youb Kim Voice: +1-613-765-8983 E-mail: mhfong@nortel.com * http://standards.ieee.org/faqs/affiliationFAQ.html Nortel Networks 3500 Carling Avenue Ottawa Ontario Canada K2H 8E9 Re: IEEE 802.16m-07/047 Call for Contributions on Project 802.16m System Description Document (SDD) Abstract This contribution proposes the IEEE 802.16m frame structure for single band operation. Purpose To incorporate the proposed frame structure into the Project 802.16m System Description Document Notice Release Patent Policy 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. 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. The contributor is familiar with the IEEE-SA Patent Policy and Procedures: http://standards.ieee.org/guides/bylaws/sect6-7.html#6 and http://standards.ieee.org/guides/opman/sect6.html#6.3 . Further information is located at http://standards.ieee.org/board/pat/pat-material.html and http://standards.ieee.org/board/pat . 1 IEEE C802.16m-08/041 Proposal for IEEE 802.16m Frame Structure for Single Band Operation Mo-Han Fong Jianglei Ma Sophie Vrzic Kelvin Au Robert Novak Jun Yuan Dongsheng Yu Anna Tee Sang-Youb Kim Nortel Networks 1 Introduction This contribution proposes the IEEE 802.16m frame structure for single band operation which is applicable to the following cases: 1) both IEEE 802.16m MS and BS operate on the same system bandwidth 2) both IEEE 802.16m and the legacy systems operate on the same system bandwidth. Frame structure for multi-band operation is proposed in a separate contribution (C802.16m-08/042). 2 General Consideration To allow coherent design and minimize implementation complexity the same generic framework is proposed to support both legacy mode and non-legacy mode Multiple access scheme for both DL and UL is OFDMA as in the legacy system. We propose to adopt the same OFDMA numerology as the legacy system is used for unicast transmission. 3 Generic Frame Structure The IEEE 802.16m generic frame structure is shown in Figure 1 to support both legacy mode and non-legacy mode. The generic frame structure consists of superframe frame (for the case of legacy mode) and mini-slot. For non-legacy mode each superframe consists of N mini-slots. For legacy mode each superframe is divided into K 5ms frames and each frame is further divided into J mini-slot. N K*J. Recommended values are K 4 J 8 N 32. Each mini-slot consists of 6 symbols. Each superframe starts with a 16m preamble mini-slot which contains the following: 1) Synchronization channel 2) System broadcast channel. First frame in the superframe containing the preamble mini-slot superframe Preamble mini-slot: contains sync channel and system broadcast channel Legacy mode: 1 Superframe K frames K*J mini-slots Non-legacy mode: 1 Superframe N mini-slots where N K*J frame frame mini-slot Figure 1 IEEE 802.16m Generic Frame Structure 2 IEEE C802.16m-08/041 3.1 Legacy Mode IEEE 802.16m and legacy systems are overlaid in a TDM fashion when both occupy the same bandwidth. Legacy TDM zone and IEEE 802.16m TDM zone are defined within the DL sub-frame and the UL sub-frame. Legacy zones are located at the beginning of the legacy DL sub-frame and the legacy UL sub-frame. Different TDD ratios can be configured for the legacy system and the IEEE 802.16m system For the case of UL FDM partitioning of resource between IEEE 802.16m and legacy systems are for further study. FDM partitioning can provide better UL coverage at the expense of imposing constraint on the UL channelization format of IEEE 802.16m 3.1.1 Superframe Frame and Mini-Slot A detailed frame structure for the legacy mode consist of superframe frame and mini-slot is shown in Figure 2. Superframe 4 frames legacy frame legacy frame legacy DL sub-frame legacy UL sub-frame 16m DL sub-frame 16m UL sub-fram

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