5G总体白皮书2.0

3
目录
摘要 .......................................................................................................................................................................... 1
1. 引言 ................................................................................................................................................................... 5
2. 5G总体目标与框架 .......................................................................................................................................... 5
2.1 5G总体需求 .................................................................................................................................................. 5
2.2 设计框架........................................................................................................................................................ 8
2.3 频谱策略........................................................................................................................................................ 9
2.4 测试需求.......................................................................................................................................................11
3. 用户中心网络UCN..........................................................................................................................................12
3.1 UCN总体目标 ..............................................................................................................................................12
3.1.1. 端到端总体架构与目标 .....................................................................................................................12
3.1.2. 无线接入网总体目标 .........................................................................................................................13
3.2 无线接入网框架 ...........................................................................................................................................14
3.2.1. 无线接入网重构 ................................................................................................................................15
3.2.2. 增强边缘 ...........................................................................................................................................16
3.2.3. 核心网与接入网重分 .........................................................................................................................17
3.2.4. 网络切片即服务 ................................................................................................................................18
3.3 关键使能技术 ...............................................................................................................................................18
3.3.1. UDN ..................................................................................................................................................18
3.3.2. C-RAN/NGFI......................................................................................................................................20
3.3.3. SDN/NFV ...........................................................................................................................................21
3.3.4. 灵活的网络切片 ................................................................................................................................24
3.3.5. 网络能力开放 ....................................................................................................................................27
3.3.6. 多连接与多空口 ................................................................................................................................29
3.3.7. D2D ...................................................................................................................................................31
3.3.8. 动态网络 ...........................................................................................................................................33
4. 软件定义空口SDAI .........................................................................................................................................36
4.1 SDAI总体目标 .............................................................................................................................................36
4.2 SDAI总体框架 .............................................................................................................................................36
4.3 关键使能技术 ...............................................................................................................................................38
4.3.1. 统一自适应帧结构 .............................................................................................................................38
4.3.2. 灵活双工 ...........................................................................................................................................40
4.3.3. 灵活多址 ...........................................................................................................................................41
4.3.4. 灵活波形 ...........................................................................................................................................43
4.3.5. 大规模多天线 ....................................................................................................................................44
4.3.6. 新型调制编码 ....................................................................................................................................46
4.3.7. 灵活频谱使用 ....................................................................................................................................47
5. 5G安全技术.....................................................................................................................................................48
5.1 5G安全架构 .................................................................................................................................................48