Outline Traffic Model FullBuffer FTP model 1 2

Outline Traffic Model Full-Buffer FTP model 1 & 2 各參數回顧 TR 37. 910(以Huawei為例) National Chung Cheng University

FTP Traffic Model 1 Small file size of 0. 5 Mbytes can be chosen to speed-up the simulation. Estimation of range of λ offered traffic = λ*S For LTE 2 x 2 10 MHz, the [10%, 50%] range of resource utilization could be covered by the range of offered traffic [2 4 6 8 10] Mbps. For a file size of 500 kbyte = 4 Mbit, this corresponds to: λ= offered traffic/S = [2, 4, 6, 8, 10]/4 = [0. 5, 1, 1. 5, 2, 2. 5] users/s. Reference: [1]TR 36. 814” 3 rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access 3(E-UTRA); Further advancements for E-UTRA physical layer aspects (Release 9)” National Chung Cheng University

FTP Traffic Model 2 The inter-arrival time is given by Tt + D with Tt file transfer time. In this case λ= 1/(Tt+D). The total offered traffic per cell is then given by offered traffic = λ* K * S = K * S / (Tt + D) Assuming download data rate of 12. 5 Mbps, the file transfer (download) time Tt is 0. 32 sec for file size of 500 Kbytes = 4 Mbits. By using this rough estimate, offered traffic is K*4/(0. 32+5). When the range of offered loads is [2 4 6 8 10], the corresponding range of K is K = [2 4 6 8 10]/4*5. 32 ~= [2 5 8 10 14] users Reference: [1]TR 36. 814 Tt 4 National Chung Cheng University

Full-Buffer Traffic Model System throughput studies shall be assessed using full-buffer traffic model capturing continuous traffic and non-varying interference[1]. Full-buffer與FTP model不同，會不斷的產生packet，使得不論何時系統都 是在忙綠中，不會有空閒時間，通常在計算系統效能時，都是計算系統滿 載的效能，因此計算系統效能時，都會採用full-buffer traffic model 5 National Chung Cheng University

Outline Traffic Model Full-Buffer FTP model 1 & 2 各參數回顧 TR 37. 910 National Chung Cheng University

TR 37. 910[2]提供了各家公司的參數設定及其模擬結果，包含： connection density、mobility、reliability、user data rate以及e. MBB spectral efficiency 以e. MBB_SE為例，e. MBB_SE內包含了三種場景的spectral efficiency以及 參數可供參考 各公司參數設置 7 National Chung Cheng University

Frame structure在第一週 TDD: DDDSU SU-MIMO、MU-MIMO 第二週 CSI feedback、code book跟 Modulation(MCS)在第 12週 8 National Chung Cheng University

Antenna configurationt在 channel model PF schedule在第 13週 在第 11週的教材有針對 MMSE做說明 9 National Chung Cheng University

TR 37. 910(2/2) In. H e. MBB 4 GHz 12 TRx. P spectral efficiency 各公司模擬結果 參數設定 Requirement 10 National Chung Cheng University

參考資料 [1]TR 36. 814” 3 rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Further advancements for E-UTRA physical layer aspects (Release 9)” [2] 3 GPP TR 37. 910 V 1. 1. 0 (2018 -12), 3 rd Generation Partnership Project; Technical Specification Group Radio Access Network; Study on Self Evaluation towards IMT-2020 Submission (Release 16) 11 National Chung Cheng University

Thank You 12 National Chung Cheng University