CHINA TELECOM. Let Our Customers Fully Enjoy the New Information Life. Connecting the World. NOMA SDR on OAI

Transcription

1 CHINA TELECOM Let Our Customers Fully Enjoy the New Information Life NOMA SDR on OAI China Telecom Technology Innovation Center

2 Introduction of CTTIC CTTIC (China Telecom Technology Innovation Center) Focus on the R&D of wireless technologies, which will benefit our future network deployment. Include 3GPP standardization work, National projects, China Telecom s internal projects, etc. Simulation and verification platform in CTTIC Build simulation and verification platform to evaluate the significance of technology to China Telecom Include software platform (system & link level), and SDR platform Becoming a World-class Integrated Information Service Provider <2>

3 What we have done based on OAI By learning the multi-thread structure and coding skill in OAI, we can accelerate the efficiency of our simulation platform. With the practical channel and real-time processing, SDR platform can give us deeper and more accurate understanding of the new technologies. NOMA SDR elwa SDR Becoming a World-class Integrated Information Service Provider <3>

4 NOMA NOMA can increase system throughput and the number of connected users. LTE R14 MUST WI is based on NOMA. 5G NR will also introduce NOMA, and NR NOMA SI has been started from March Power USRP GPP enb Power Tx siganl d 1 d 2 d 1 < d 2 Power freq 1.9% 1.3% 1.9% 2.9% Cell average gain Cell edge gain USRP GPP SIC of signal Rx siganl signal freq Rx siganl freq signal USRP GPP 10 UEs 20 UEs NOMA system level simulation Rx procedure NOMA Tx and Rx procedure Rx procedure Becoming a World-class Integrated Information Service Provider <4>

5 SIC Receiver SIC receiver is needed for near UE, which bring a challenge on processing delay. encoding Scrambling Modulation mapper enb encoding Scrambling Modulation mapper Resource element mapper OF DM si gnal generation USRP Unscrambling Demodulation Channel equalization Resource element extr act OF DM demodulation Far USRP encoding Unscrambling Demodulation Stage1 Scrambling Modulation mapper Unscrambling Demodulation Channel equalization Stage2 Resource element extr act OF DM demodulation Near USRP Becoming a World-class Integrated Information Service Provider <5>

6 UE multi-thread So UE multiple-thread is introduced to control the processing delay. For high order MCS, inner multi-thread is also needed. Time/ms M 10M UE_thread_rx One subframe 1ms One radio frame 10ms One subframe 1ms UE RX thread0 预留处理时间 Subframe0 RX Slot 0 Slot 1... slot UE RX thread1 Subframe1 RX Slot 0 Slot 1 slot UE RX thread0 Subframe0 RX Slot 0 Slot 1 slot... Time/ms MCS 0.5 5M 10M 处理本子帧数据... UE RX thread9 Subframe9 RX Slot 0 Slot 1 slot MCS Becoming a World-class Integrated Information Service Provider <6>

7 Demo In our real-time SDR demo, NOMA shows a 40% gain over traditional orthogonal multiple access technology. Becoming a World-class Integrated Information Service Provider <7>

8 Plan To better evaluate new wireless technologies, based on our software simulation and OAI SDR platforms elwa demo Further speed up software simulation Implement LDPC, polar code and other 5G features into software platform/oai Becoming a World-class Integrated Information Service Provider <8>

9 Thanks! Please follow our wechat public number CHINA TELECOM