1. doc.: IEEE 802.11-13/1351r0 Submission Nov. 2013 Slide 1 User Scheduling for DL-MU-MIMO Transmission with QoE Constraints Date: 2013-11-3 Authors: NameAffiliationsAddressPhoneEmail Weiwei XIANCRL, Southeast University Rm S509, Liwenzheng Building, 2 Sipailou, Nanjing, 210096, China (+86) 13851584809wwxia@seu.edu.cn Junchao LINCRL, Southeast University Rm S509, Liwenzheng Building, 2 Sipailou, Nanjing, 210096, China (+86) 13951766681lijunchao_2011@seu.edu.cn Lianfeng SHENNCRL, Southeast University Rm S509, Liwenzheng Building, 2 Sipailou, Nanjing, 210096, China (+86) 13809032608lfshen@seu.edu.cn Pingping XUNCRL, Southeast University Rm S520 Liwenzheng Building, 2 Sipailou, Nanjing, 210096, China (+86) 13951619561xpp@seu.edu.cn Nan BAONCRL, Southeast University Rm S509, Liwenzheng Building, 2 Sipailou, Nanjing, 210096, China (+86) 15850550213faydeanball@163.com Geng CHENNCRL, Southeast University Rm S509, Liwenzheng Building, 2 Sipailou, Nanjing, 210096, China (+86) 15996289607 chengeng816_2008@163.co m Chengyi LIUNCRL, Southeast University Rm S509, Liwenzheng Building, 2 Sipailou, Nanjing, 210096, China (+86) 15195965911guaidaojideliu@126.com Yiwei MAONCRL, Southeast University Rm S509, Liwenzheng Building, 2 Sipailou, Nanjing, 210096, China (+86) 13770828176shouhemyw@163.COM

2. doc.: IEEE 802.11-13/1351r0 Submission Content Motivation General Characteristics of System Model Proposed User Scheduling Scheme Conclusion References Slide 2 Nov. 2013

3. doc.: IEEE 802.11-13/1351r0 Submission Motivation This document provides a joint user scheduling scheme for the DL-MU-MIMO transmission which takes into account diverse quality of experience (QoE) requirements of mobile devices. By adding the proposed user scheduling scheme, HEW could offer improvements to the overall performance enhancement to support high-data-rate multiple users with diverse QoE requirements. Slide 3 Nov. 2013

4. doc.: IEEE 802.11-13/1351r0 Submission General Characteristics of System Model Spatially uncorrelated flat fading channel Perfect current channel state information (CSI) Singular value decomposition based Block Diagonalization method The scheduling decision is made based on QoE requirements, current CSI and current queuing state information of all MUs Slide 4 Nov. 2013

5. doc.: IEEE 802.11-13/1351r0 Submission General Characteristics of System Model Slide 5 Nov. 2013

6. doc.: IEEE 802.11-13/1351r0 Submission Proposed User Scheduling Scheme Slide 6 Nov. 2013

7. doc.: IEEE 802.11-13/1351r0 Submission Proposed User Scheduling Scheme Slide 7 Nov. 2013

8. doc.: IEEE 802.11-13/1351r0 Submission Proposed User Scheduling Scheme The proposed user scheduling scheme can be summarized as the following four steps: 1) Each MU estimates its current CSI and uploads it to AP using the uplink dedicated pilots. 2) AP receives the CSI from all MUs and obtains the QSI through observing MUs’ buffers. Slide 8 Nov. 2013

9. doc.: IEEE 802.11-13/1351r0 Submission Proposed User Scheduling Scheme Slide 9 Oct. 2013

10. doc.: IEEE 802.11-13/1351r0 SubmissionSlide 10 Nov. 2013 Procedure of proposed user scheduling scheme

11. doc.: IEEE 802.11-13/1351r0 Submission Conclusion This document provides a joint user scheduling scheme for the DL-MU-MIMO transmission which takes into account diverse QoE requirements of mobile devices. The proposed scheme incorporates both the source statistics and queue dynamics to determine the subset of users chosen for each scheduling slot. The proposed scheme can not only maintain the QoE requirements in the presence of bursty data traffic but also maximize the system throughput by exploiting the multiplexing diversity gain and multiuser selection gain. Slide 11 Nov. 2013

12. doc.: IEEE 802.11-13/1351r0 Submission References [1] 12/0910r0, Carrier oriented WIFI for cellular offload, Orange. [2] 13/1158r0, Video Traffic and Applications for HEW, William Carney. [3] 13/0850r0, Quantitative QoE Requirements for HEW, Huai-Rong Shao. [4] 13/1090r2, Non-linear pre-coding MIMO Scheme for next generation WLAN, Xiang Gao. [5] 13/1154r0, DL-MU-MIMO Transmission with Unequal Bandwidth, Yongming Huang. [6] 13/0865r2, Video Data Rate for HEW, Huai-Rong Shao. [7] F. Kelly, “Notes on effective bandwidths,” in Stochastic Networks: Theory and Applications, vol. 4, Royal Statistical Society Lecture Notes Series, Ed. Oxford: Oxford Statistical Science Series Oxford Univ. Press, 1996, pp. 141–168. [8] G. Caire and S. Shamai, “On the achievable throughput of a multi-antenna Gaussian broadcast channel,” IEEE Trans. Inform. Theory, vol. 49, no. 7, pp. 1691-1706, Jul. 2003. [9] J. S. Harsini and F. Lahouti, “Adaptive transmission policy design for delay-sensitive and bursty packet traffic over wireless fading channels,” IEEE Trans. Wireless Commun., vol. 8, no. 2, pp. 776–786, Feb. 2009.. Slide 12 Nov. 2013