1、Integrated Terrestrial-Satellite Communication(ITSC)Copyright CICT MOBILE CO.,LTD.All Rights Reserved.No part of this white paper may be reproduced or transmitted in any form or by any means without prior written consent of CICT Mobile Co.,LTD.WHITE PAPERChapter 1：IntroductionChapter 2：Driving force

2、,application scenarios and visionChapter 3：Key performance indicators and technical challengesChapter 6：Promotion of standardiza-tion and technical verificationSummary and prospectAbbreviationsReferences0204050506080910121316171818191920212222222324242525262728293031323334362.1.Driving force of ITSC

3、2.2.Typical application scenarios of ITSC 2.3.Vision of ITSC3.1.Key performance indicator(KPI)3.2.Technical challenges3.3.KPIs and technical challenges for DS2MPC 5.1.Network architecture 5.2.Wireless transmission technology 5.2.1.Duplex mode5.2.2.Waveform and multiple access tech-nology5.2.3.Beam m

4、anagement5.2.4.Link and coverage enhancement5.2.5.UE positioning5.3.Mobility management5.3.1.Inter-satellite handover5.3.2.UE location management and pag-ing5.3.3.Roaming5.4.Network and security technology5.4.1.Flexible deployment of network functions5.4.2.Slicing technology5.4.3.Network virtualizat

5、ion5.4.4.Edge computing 5.4.5.Broadcast and multicast technology 5.4.6.Security 5.4.7.Routing5.5.Satellite-terrestrial spectrum sharing and interference avoidance 5.6.Implementation specific optimization technologyChapter 4：Roadmap for ITSC Chapter5：Key technologies of ITSC sys-tem CONTENTSIntroduct

6、ionIntegrated Terrestrial-Satellite Communication(ITSC)03Today,existing terrestrial mobile communica-tion networks,including 3G/4G/5G,cover ap-proximately 70%of the population.However,achieving cost-effective coverage in areas such as space,oceans,forests,deserts,and remote regions remains challengi