文档介绍：LTE 主要技术介绍
COPYRIGHT © 2011 ALCATEL-LUCENT SHANGHAI BELL. ALL RIGHTS RESERVED.
目录
1. LTE 标准演进
2. LTE 网络架构
3. LTE 关键技术介绍 MIMO OFDM
4. LTE 物理层介绍
5. LTE 基本信令流程
6. LTE 系统内RNTI 总结
7. LTE 无线空口协议介绍
8. LTE 移动动性管理
2
COPYRIGHT © 2011 ALCATEL-LUCENT SHANGHAI BELL. ALL RIGHTS RESERVED.
LTE 标准演进
COPYRIGHT © 2011 ALCATEL-LUCENT SHANGHAI BELL. ALL RIGHTS RESERVED.
3GPP 标准演进
Release 9: LTE Release 10: LTE
Stage 3 “complete” Stage 3 “complete”
Dec 2009 Dec 2010
2000 2002 2004 2006 2008 2010
LTE
Release11:
ongoing
Kickoff in RAN
LTE workshop LTE Feasibility Release 8: LTE Stage
LTE Work Item
Nov 2004 Study initiated 3 “complete”
created
Dec 2004 Dec 2008
March 2006
4
COPYRIGHT © 2011 ALCATEL-LUCENT SHANGHAI BELL. ALL RIGHTS RESERVED.
LTE 协议标准介绍
5
COPYRIGHT © 2011 ALCATEL-LUCENT SHANGHAI BELL. ALL RIGHTS RESERVED.
Release 8
•作为第一版的LTE 标准,Rel-8在2008年12月冻结
Rel-8 的主要内容包包括以下几个方面
- LTE网络结构定义
- 无线接口定义
- 移动动性管理定义
- KPI指标定义
- 层一,层二,层三协议栈规范
- SON定义
- 数据结构定义
- IMS, OAM相关规定
- …
6
COPYRIGHT © 2011 ALCATEL-LUCENT SHANGHAI BELL. ALL RIGHTS RESERVED.
Release 9
Rel-9在2009 年12 月冻结,在LTE 方面主要有以下新内容:
• Pico-Cell:在Rel-8 的基础上定义了覆盖范围更小,为了提高系统容量的 Pico-Cell
- definition of LTE Pico BS class
- RF requirements for LTE Pico BS class
- introduction of BS transmission and reception requirements, but no new baseband performance
requirements
- update of conformance test specifications
• dual-layer BF :Rel-8 定义了single-lay BF, 为了进一步提高系统吞吐量
和和边缘用户体验,Rel-9定义了dual-layer BF。
• MBMS,SON etc…
7
COPYRIGHT © 2011 ALCATEL-LUCENT SHANGHAI BELL. ALL RIGHTS RESERVED.
Release 10 LTE Advance
• Carrier Aggregation
• Enhanced Downlink Multiple Antenna Transmission for LTE
• Uplink Multiple Antenna Transmission for LTE
• Relays for LTE
• Enhanced ICIC for non-CA based deployments
• LTE SON Enhancements
• HNB and HeNB Mobility Enhancements
• Further Enhancements to MBMS for LTE
• Minimization of Drive