1. Distributed Nodes Cellular Systems for IEEE 802.16m Document Number: IEEE S802.16m-07_214r2, Date Submitted: 2008-1-17 Source: Yunzhou Li, Shidong Zhou, Xibin Xu, Xin Su, Xiaofeng Zhong, Jing Wang, Xiaolu Dong, Ying Du, Shanpeng Xiao, Wenqi Liao, LianYang, Zhongkai Wang, Weijun Xu, Thomas Li, E-mail:{liyunzhou, zhousd, xuxb, suxin, zhongxf, wangj}@tsinghua.edu.cn, {dongxiaolu, duying}@mail.ritt.com.cn, {xiaoshanpeng, liaowenqi} @chinamobile.com, yang.lian@huawei.com, {wangzk,xwj}@thip.gov.cn, thomasli@legendsilicon.com Tsinghua Univ., CATR, CMCC, Huawei Technologies, Tianjin Municipal Government, Tianjin Hi-Tech Industrial Park, Legend Silicon Corp. Re: TGm Call for comments on SDD, IEEE 802.16m-07/040 Abstract: This document proposes the description of distributed nodes cellular systems for IEEE 802.16m. Purpose: For 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. March 21, 2007, Presentation to Verizon MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office. All other product or service names are the property of their respective owners. © Motorola, Inc. 2006. 2 Outline Motivation Concept of Distributed Nodes Cellular System (DNCS) Conclusion and Text proposal to 802.16m SDD

3. March 21, 2007, Presentation to Verizon MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office. All other product or service names are the property of their respective owners. © Motorola, Inc. 2006. 3 Motivation The deployment of base station for 802.16m will be a big problem, for the worry about the radio radiation  The transmit power per sector may be up to 49dBm for 20MHz (43dBm/5MHz in WCDMA)bandwidth and 56dBm for 100MHz bandwidth, which is so large that is becoming a threat to human health.  When MIMO with multiple streams used, the radiation will even be doubled ore tripled  In china, the TD-SCDMA trial network is delayed partly due to the obstacle of BS address selection, concerned by real estate owner. The distributed nodes cellular systems (DNCS) is an effective solution to the problem of large transmit power.

4. March 21, 2007, Presentation to Verizon MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office. All other product or service names are the property of their respective owners. © Motorola, Inc. 2006. 4 The concept of DNCS The DNCS consists of a central BS and several distributed nodes (Node A) Node A: Up/Down-frequency-convert, AD/DA; (Radio over Fiber…) Central BS: Joint digital signal processing Benefit:  Shorter radio access distance --> Lower transmitting power!  High power efficiency Especially at hot spots, Where fiber is available and Radiation is more seriously Concerned  To boost the practical throughput and frequency efficiency of each cell in high user density areas, with the joint signal processing.  By overcoming the problem of frequency reuse and mutual interference

5. March 21, 2007, Presentation to Verizon MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office. All other product or service names are the property of their respective owners. © Motorola, Inc. 2006. 5 Conclusion and Text proposal to 802.16m SDD There are several abstractive features in DNCS:  The capability of DNCS in data capacity and user capacity can be smoothly extended by adding new Node A, so it is feasible to increase the capacity of the cellular system after the Base station has been set up.  Emitting power can be significantly reduced by using DNCS via reducing access distance between subscriber and access antennas. [ The following text proposal is suggested by this contribution: The system architecture of cellular system with distributed nodes (Node A) connected with base station via dedicated links, (e.g., wired fiber or wireless), i.e. DNCS, should be involved in SDD. ]