1. 802.16m SDD Proposal Document Number: S802.16m-07_240r3 Date Submitted: November 13 2007 Source: Hokyu Choi, Jaeweon Cho, David MazzareseVoice:[Telephone Number (optional)] Jaehee Cho, Yungsoo Kim, DS ParkE-mail:choihk@samsung.comchoihk@samsung.com Samsung Electronics Venue: Atlanta, GA Base Contribution: C80216m-07_240r3 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 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. Summary Based on the joint SDD system architecture proposal [1], four more issues are presented in this slides: –Further thought on legacy support –Self organization network, Multi-carrier support, MIMO architecture Self organization function and multi-carrier support –Included in the proposed joint SDD contribution [1] –In this contribution, clarification is given for system architectural issues regarding those features Multi-carrier Support –There are wide range of possible scenarios in single & multi-carrier support. –Moreover, legacy support also adds up additional scenarios to multi-carrier support. –In this contribution, we intend to show full range of possible scenarios so that initial discussion can focus on discriminating unrealistic and unnecessary scenarios before 802.16m have detail solution. Generic DL MIMO architecture –The possible range of MIMO discussion would be very wide. –A generic MIMO architecture can function as a place-holder of any kinds of proposals while keeping overall architecture maintained. –MIMO discussion in 802.16m will change the architecture more and more specific and detail as discussion goes. [1] IEEE 80216m-07/297 “Proposal for IEEE 802.16m System Architecture and Protocol Structure”

3. Further thoughts on Legacy Support

4. 4 Further Thoughts on Legacy Support Resources (time, frequency, space, code, …) can be divided for 16e and 16m –Time or Frequency are most reasonable resources to divide : TDM vs. FDM for multiplexing legacy (16e) and 16m signals –Recommend to take a careful investigation in choosing TDM or FDM in detail discussion phase based on proper evaluation. Downlink Uplink or OFDM symbols SubCH OFDM symbols SubCH OFDM symbols SubCH OFDM symbols SubCH

5. 5 Self Organizing Networks

6. 6 Self Organizing Network Architecture Self Organization (SO) includes self-configuration and self-optimization. Element Management System (EMS) performs SO functions over BSs. –EMS is not in the scope of 16m BS performs SO functions over neighboring BSs and MSs. MS may perform measurement and report for SO operations. Scope of 16m It also requires network side work.

7. 7 Self Organization Mechanism SO procedures & signaling –Procedures may include measurement request/response for SO mechanism. –SO reference signals may be defined to enhance the SO mechanisms. Control signaling block may send the SO reference signal under supervision of SO block

8. 8 Single & Multi-Carrier Support

9. 9 Definitions Multiple RF and PHY Packet aggregation in MAC layer 5MHz 10MHz 20MHz 5MHz 10MHz Multi-carrier Scalable Bandwidth Single-carrier Same OFDM symbol length Same frequency subcarrier spacing Multi-carrier Single-carrier Scalable Bandwidth

10. 10 Possible Single/Multi-Carrier Scenarios MS5 MS4 BS MS1 MS3 BS1BS1’ BS MS BS RF+PHY MS RF+PHY Frequency Overlay MS5 MS4 MS1 MS3 MS2 Possible scenarios Single carrier BS –BS, having a single wide band, supports MSs with narrower BW –For inter-working (roaming) among scalable bandwidths Multi carrier BS –Contiguous or Non-contiguous bands –Single or Multiple bandwidths (BS1 = BS1’ or BS1 < BS1’) –BS1/BS1’ = 16e/16m or 16m/16m

11. 11 MIMO Architecture

12. 12 MIMO Architecture

13. 13 MIMO Encoding and Mapping Block MIMO processing is uniquely described by the encoding and mapping: –Input: codewords of modulated symbols –Output: basic time-frequency resource block for each transmit antenna A specific MIMO mode only needs adapting the processing blocks within the MIMO encoding and mapping block Selection of MIMO mode for adaptation to operating conditions may be based (among other things) on feedback of –Channel Quality Information (CQI) –Channel State Information (CSI) CQI and CSI may both be used in the scheduler, but also: –CQI: for modulation and coding rate adaptation in bit-level processing –CSI: for signal processing within MIMO encoding and mapping block

14. 14 MIMO Encoding & Mapping Support of single and multiple codewords Support of diversity, multiplexing, precoding Support of SU/MU MIMO, OL/CL MIMO Precoder support for closed-loop MIMO: –Beamforming with one or several beams –Beamforming to one or several users –Adaptation to short-term and/or long-term CSI

15. 15 Q&A