LTEPRACH参数配置解析总结副本.docx
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LTEPRACH参数配置解析总结副本.docx
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LTEPRACH参数配置解析总结副本
LTE-PRACH参数配置解析总结---副本
LTEPRACH参数配置分析
1
2
3引言
3.1编写目的
本文档的编写目的是分析PRACH信道的各参数的配置方法及各邻区间如何进行配置。
3.2文档组织
本文首先对LTE3.0版本需要配置的PRACH信道的各参数进行了说明和描述,根据网络规划如何确定各参数的取值,并给出相邻小区各参数的配置原则。
本文在第2章的后半部分给出了PRACH各参数的配置方法和步骤。
第3章给出了高速模式下的零相关和根序列的配置有一定的关联关系。
3.3预期读者和阅读建议
本文档的预期读者为LTE网络建设人员和LTE网络优化人员、测试人员等。
3.4参考资料
1.《LTE无线配置参数分析.doc》V1.1
2.《LTEPRACH密度需求分析.doc》V1.0
3.《LTE——UMTS长期演进理论与实践》马霓、邬钢等译
4.3GPPTS36.211PhysicalChannelsandModulation
3.5缩写术语和常用符号
英文缩写
英文全称
中文全称
CM
CubicMetric
立方量度
PAPR
Peak-to-AveragePowerRatio
峰均值功率比
PRACH
PhysicalRandomAccessChannel
物理随机接入信道
RACH
RandomAccessChannel
随机接入信道
4PRACH信道的配置分析
4.1PRACH信道的配置参数
LTE中PRACH信道的配置参数主要有五个,都是小区级参数分别是:
✧PRACH配置索引(prach-ConfigurationIndex)
✧零相关配置(zeroCorrelationZoneConfig)
✧根序列索引(rootSequenceIndex)
✧是否为高速状态(highSpeedFlag)
✧频率偏移(prach-FrequencyOffset)
4.1.1PRACH配置索引(prach-ConfigurationIndex)
4.1.1.1参数基本信息
参数编号
取值范围
物理单位
调整步长
0..63
默认值:
51
无
无
参数名称
传送途径
作用范围
参数出处
prach-ConfigurationIndex
eNodeB->UE
Cell
36.211
所属网元及设置途径
小区逻辑无线资源参数->物理随机接入信道->PRACH配置索引
不同场景下的差异化配置说明
无
用于指示小区的PRACH配置索引。
该参数指示了PRACH的频域资源索引、时域的无线帧、半帧、子帧的资源占用情况。
该参数确定后,小区PRACH的时、频资源即可确定,同时也确定了采用的前导格式(0~47为前导格式0~3,47~57为前导格式4),其定义见下表(36.211Table5.7.1-4)。
PRACH
configurationIndex
(SeeTable5.7.1-3)
UL/DLconfiguration(SeeTable4.2-2)
0
1
2
3
4
5
6
0
(0,1,0,2)
(0,1,0,1)
(0,1,0,0)
(0,1,0,2)
(0,1,0,1)
(0,1,0,0)
(0,1,0,2)
1
(0,2,0,2)
(0,2,0,1)
(0,2,0,0)
(0,2,0,2)
(0,2,0,1)
(0,2,0,0)
(0,2,0,2)
2
(0,1,1,2)
(0,1,1,1)
(0,1,1,0)
(0,1,0,1)
(0,1,0,0)
N/A
(0,1,1,1)
3
(0,0,0,2)
(0,0,0,1)
(0,0,0,0)
(0,0,0,2)
(0,0,0,1)
(0,0,0,0)
(0,0,0,2)
4
(0,0,1,2)
(0,0,1,1)
(0,0,1,0)
(0,0,0,1)
(0,0,0,0)
N/A
(0,0,1,1)
5
(0,0,0,1)
(0,0,0,0)
N/A
(0,0,0,0)
N/A
N/A
(0,0,0,1)
6
(0,0,0,2)
(0,0,1,2)
(0,0,0,1)
(0,0,1,1)
(0,0,0,0)
(0,0,1,0)
(0,0,0,1)
(0,0,0,2)
(0,0,0,0)
(0,0,0,1)
(0,0,0,0)
(1,0,0,0)
(0,0,0,2)
(0,0,1,1)
7
(0,0,0,1)
(0,0,1,1)
(0,0,0,0)
(0,0,1,0)
N/A
(0,0,0,0)
(0,0,0,2)
N/A
N/A
(0,0,0,1)
(0,0,1,0)
8
(0,0,0,0)
(0,0,1,0)
N/A
N/A
(0,0,0,0)
(0,0,0,1)
N/A
N/A
(0,0,0,0)
(0,0,1,1)
9
(0,0,0,1)
(0,0,0,2)
(0,0,1,2)
(0,0,0,0)
(0,0,0,1)
(0,0,1,1)
(0,0,0,0)
(0,0,1,0)
(1,0,0,0)
(0,0,0,0)
(0,0,0,1)
(0,0,0,2)
(0,0,0,0)
(0,0,0,1)
(1,0,0,1)
(0,0,0,0)
(1,0,0,0)
(2,0,0,0)
(0,0,0,1)
(0,0,0,2)
(0,0,1,1)
10
(0,0,0,0)
(0,0,1,0)
(0,0,1,1)
(0,0,0,1)
(0,0,1,0)
(0,0,1,1)
(0,0,0,0)
(0,0,1,0)
(1,0,1,0)
N/A
(0,0,0,0)
(0,0,0,1)
(1,0,0,0)
N/A
(0,0,0,0)
(0,0,0,2)
(0,0,1,0)
11
N/A
(0,0,0,0)
(0,0,0,1)
(0,0,1,0)
N/A
N/A
N/A
N/A
(0,0,0,1)
(0,0,1,0)
(0,0,1,1)
12
(0,0,0,1)
(0,0,0,2)
(0,0,1,1)
(0,0,1,2)
(0,0,0,0)
(0,0,0,1)
(0,0,1,0)
(0,0,1,1)
(0,0,0,0)
(0,0,1,0)
(1,0,0,0)
(1,0,1,0)
(0,0,0,0)
(0,0,0,1)
(0,0,0,2)
(1,0,0,2)
(0,0,0,0)
(0,0,0,1)
(1,0,0,0)
(1,0,0,1)
(0,0,0,0)
(1,0,0,0)
(2,0,0,0)
(3,0,0,0)
(0,0,0,1)
(0,0,0,2)
(0,0,1,0)
(0,0,1,1)
13
(0,0,0,0)
(0,0,0,2)
(0,0,1,0)
(0,0,1,2)
N/A
N/A
(0,0,0,0)
(0,0,0,1)
(0,0,0,2)
(1,0,0,1)
N/A
N/A
(0,0,0,0)
(0,0,0,1)
(0,0,0,2)
(0,0,1,1)
14
(0,0,0,0)
(0,0,0,1)
(0,0,1,0)
(0,0,1,1)
N/A
N/A
(0,0,0,0)
(0,0,0,1)
(0,0,0,2)
(1,0,0,0)
N/A
N/A
(0,0,0,0)
(0,0,0,2)
(0,0,1,0)
(0,0,1,1)
15
(0,0,0,0)
(0,0,0,1)
(0,0,0,2)
(0,0,1,1)
(0,0,1,2)
(0,0,0,0)
(0,0,0,1)
(0,0,1,0)
(0,0,1,1)
(1,0,0,1)
(0,0,0,0)
(0,0,1,0)
(1,0,0,0)
(1,0,1,0)
(2,0,0,0)
(0,0,0,0)
(0,0,0,1)
(0,0,0,2)
(1,0,0,1)
(1,0,0,2)
(0,0,0,0)
(0,0,0,1)
(1,0,0,0)
(1,0,0,1)
(2,0,0,1)
(0,0,0,0)
(1,0,0,0)
(2,0,0,0)
(3,0,0,0)
(4,0,0,0)
(0,0,0,0)
(0,0,0,1)
(0,0,0,2)
(0,0,1,0)
(0,0,1,1)
16
(0,0,0,1)
(0,0,0,2)
(0,0,1,0)
(0,0,1,1)
(0,0,1,2)
(0,0,0,0)
(0,0,0,1)
(0,0,1,0)
(0,0,1,1)
(1,0,1,1)
(0,0,0,0)
(0,0,1,0)
(1,0,0,0)
(1,0,1,0)
(2,0,1,0)
(0,0,0,0)
(0,0,0,1)
(0,0,0,2)
(1,0,0,0)
(1,0,0,2)
(0,0,0,0)
(0,0,0,1)
(1,0,0,0)
(1,0,0,1)
(2,0,0,0)
N/A
N/A
17
(0,0,0,0)
(0,0,0,1)
(0,0,0,2)
(0,0,1,0)
(0,0,1,2)
(0,0,0,0)
(0,0,0,1)
(0,0,1,0)
(0,0,1,1)
(1,0,0,0)
N/A
(0,0,0,0)
(0,0,0,1)
(0,0,0,2)
(1,0,0,0)
(1,0,0,1)
N/A
N/A
N/A
18
(0,0,0,0)
(0,0,0,1)
(0,0,0,2)
(0,0,1,0)
(0,0,1,1)
(0,0,1,2)
(0,0,0,0)
(0,0,0,1)
(0,0,1,0)
(0,0,1,1)
(1,0,0,1)
(1,0,1,1)
(0,0,0,0)
(0,0,1,0)
(1,0,0,0)
(1,0,1,0)
(2,0,0,0)
(2,0,1,0)
(0,0,0,0)
(0,0,0,1)
(0,0,0,2)
(1,0,0,0)
(1,0,0,1)
(1,0,0,2)
(0,0,0,0)
(0,0,0,1)
(1,0,0,0)
(1,0,0,1)
(2,0,0,0)
(2,0,0,1)
(0,0,0,0)
(1,0,0,0)
(2,0,0,0)
(3,0,0,0)
(4,0,0,0)
(5,0,0,0)
(0,0,0,0)
(0,0,0,1)
(0,0,0,2)
(0,0,1,0)
(0,0,1,1)
(1,0,0,2)
19
N/A
(0,0,0,0)
(0,0,0,1)
(0,0,1,0)
(0,0,1,1)
(1,0,0,0)
(1,0,1,0)
N/A
N/A
N/A
N/A
(0,0,0,0)
(0,0,0,1)
(0,0,0,2)
(0,0,1,0)
(0,0,1,1)
(1,0,1,1)
20/30
(0,1,0,1)
(0,1,0,0)
N/A
(0,1,0,1)
(0,1,0,0)
N/A
(0,1,0,1)
21/31
(0,2,0,1)
(0,2,0,0)
N/A
(0,2,0,1)
(0,2,0,0)
N/A
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