1. C80216m-08_210r2 ProjectIEEE 802.16 Broadband Wireless Access Working Group http://ieee802.org/16 Title16m Downlink Control Information Hierarchy Date Submitted 2008-03-10 Source(s)Mingyang Sun, Xueqin Gu, Chongli Liu, Juejun Liu, Yunsong Yang, Zhigang Rong, Jianmin Lu Huawei Shanpeng Xiao, Wenqi Liao China Mobile Xiaolu Dong, Ying Du CATR Jiahua Liu Alcatel Shanghai Bell Xin Su, Xiaofeng Zhong Tsinghua University E-mail: yunsongyang@huawei.com xiaoshanpeng@chinamobile.com liaowenqi@chinamobile.com dongxiaolu@mail.ritt.com.cn duying@mail.ritt.com.cn jianhua.liu@alcatel-sbell.com.cn suxin@mail.tsinghua.edu.cn zhongxf@tsinghua.edu.cn Re:IEEE 802.16m-08/005: Call for Contributions on Project 802.16m System Description Document (SDD). Target topic: “ Downlink Control Structures ”. AbstractProposal for downlink control structures PurposeFor discussion and approval by TGm 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. C80216m-08_210r2 2 [1]. IEEE C80216m-08_118r1 16m Downlink Superframe Structure [1]

3. C80216m-08_210r2 3 Downlink Control Information Hierarchy

4. C80216m-08_210r2 4 SCH for initial network acquisition, with fixed CP length to minimize blind detection –PSC for timing and frequency correction Possible for SFN transmission within network –SSC for Cell_ID P-BCH for network-wide common and static parameters such as bandwidth, CP length, superframe index, TDD ratio –Possible for SFN transmission within network S-BCH for sector-specific parameters such as antenna setting, power setting, control zone setting, resource allocation setting, System Information message setting, 16e/16m ratio/offset, H-FDD setting, etc. –Sufficient to allow MS to decode the DL data channels QPCH for quick paging messages –Possible with SFN transmission within QPCH zone Example of DL Super-frame Header

5. C80216m-08_210r2 5 Data Mini-frame Control Information The control information relating to the data traffic in each data Mini-frame includes –Scheduling grant message for DL/UL resource allocation –System acquisition grant message for fast response to random access attempts –UL power control bits –ACK/NACK bits for UL data channel HARQ We provide more details of two control structures of the data mini-frame in contributions IEEE C80216m-08/211 and IEEE C80216m-08/212, respectively.

6. C80216m-08_210r2 6 Example of Control Messages Carried on Data Channels Common/broadcast control messages –using fixed periodical broadcasting without a dynamic scheduling grant message; and/or using a dynamic allocation of a data channel that is identified with a common MACID in the scheduling grant message –for example, additional downlink system parameter messages, uplink system parameter messages, full paging messages, etc. User-specific control messages –Identified with user-specific MACID

7. C80216m-08_210r2 7 Text Proposal Insert the following text into Physical Layer sub-clause (C802.16m-08/003) 11.X Downlink Control Information Hierarchy 11.X.1 Super-frame header The Super-frame Header shall provides: Synch signals for timing and frequency correction Cell_ID network-wide common parameters, e.g. bandwidth, CP length, superframe index, TDD ratio, etc. –with SFN transmission within the network sector-specific system parameters that are sufficient for the MS to decode the DL data channels, e.g. antenna setting, power setting, control zone setting, resource allocation setting, System Information message setting, 16e/16m ratio/offset, H-FDD setting, etc. –Additional DL system parameters and UL system parameters are broadcasted in System Information message using the data channels quick paging messages, possibly with SFN transmission within the quick paging zone –Full paging message transmitted using the data channels, possibly with SFN transmission within the paging zone

8. C80216m-08_210r2 8 Text Proposal Insert the following text into Physical Layer sub-clause: 11.X.2 Data Mini-frame Control Information The control information relating to the data traffic in each data Mini-frame includes: Scheduling grant message for DL/UL resource allocation System acquisition grant message for fast response to random access attempts UL power control bits ACK/NACK bits for UL data channel HARQ 11.X.3 Control Messages Carried on the Data Channel Additional downlink and uplink system parameter messages and full paging messages can be carried on the data channel using fixed periodical broadcasting without a dynamic scheduling grant message; and/or using a dynamic allocation of a data channel that is identified with a common MACID in the scheduling grant message. User-specific control messages can also be carried on the data channels using user- specific MACID.