LTE空中接口参数配置介绍.pdf

ALULTE网络优化介绍

阿尔卡特朗讯LTE优化空中接口配置

1
COPYRIGHT©ALCATEL-LUCENT2012.ALLRIGHTSRESERVED.
内容

1.小区及天线基础配置参数
2.上行控制信息
3.物理信道配置

3
COPYRIGHT©ALCATEL-LUCENT2012.ALLRIGHTSRESERVED.
1小区及天线基础配置参数

1LTE网络优化流程介绍

4
COPYRIGHT©ALCATEL-LUCENT2012.ALLRIGHTSRESERVED.
1.1小区配置

1.1.13GPP定义的LTE频段范围

5AllRightsReserved©Alcatel-Lucent2010

LTE概述
1.1小区配置
1.1.23GPP定义的LTE频道编号EARFCN
LTE的频率通过中心频道号dlEARFCN/UlEARFCN和带宽bandwidth定义
•bandwidth：如n100-20MHz

•EARFCN的计算公式是：Fxx=Fxx_low+0.1(Nxx–NOffs-xx)

其中：xx=上行或下行;Nxx是EARFCN，即中心频道号

E-UTRADownlinkUplink
Operating
BandFDL_low(MHz)NOffs-DLRangeofNDLFUL_low(MHz)NOffs-ULRangeofNUL
1211000–59919201800018000–18599
21930600600-119918501860018600–19199
3180512001200–194917101920019200–19949
4211019501950–239917101995019950–20399
586924002400–26498242040020400–20649
687526502650–27498302065020650–20749
7262027502750–344925002075020750–21449
892534503450–37998802145021450–21799
91844.938003800–41491749.92180021800–22149
10211041504150–474917102215022150–22749
…

3420103620036200–3634920103620036200–36349
3518503635036350–3694918503635036350–36949
3619303695036950–3754919303695036950–37549
3719103755037550–3774919103755037550–37749
3825703775037750–3824925703775037750–38249
3918803825038250-3864918803825038250-38649
4023003865038650-3964923003865038650-39649
6
COPYRIGHT©ALCATEL-LUCENT2012.ALLRIGHTSRESERVED.
1.1小区配置

1.1.3LTE频率分配(FDD)

举例：某FDD小区上行频带：1920-1935；下行频带：2110-2125；
带宽：15MHz；所属Band1

下行上行
频带2110-2125MHz1920-1935MHz
中心频率2117.5MHz1927.5MHz
Fxx_low21101920
NOffs-xx018000
EARFCN7518075

dlEARFCN的计算：2110+0.1×（Nxx-0）=2117.5MHz，dlEARFCN=75

ulEARFCN的计算：1920+0.1×（Nxx-18000）=1927.5MHz，UlEARFCN=18075

DownlinkUplink
E-UTRA
BandFDL_low(MHz)NOffs-DLRangeofNDLFUL_low(MHz)NOffs-ULRangeofNUL

1211000–59919201800018000–18599

7
COPYRIGHT©ALCATEL-LUCENT2012.ALLRIGHTSRESERVED.
1.1小区配置
1.1.4LTE频率分配(TDD)

举例：某TDD小区频带：2575-2595MHz；带宽：15MHz；所属Band38

下行上行
频带2575-2595MHz2575-2595MHz
中心频率2585MHz2585MHz
Fxx_low25702570
NOffs-xx3775037750
EARFCN3790037900

EARFC