摘要
对于LTE网络,物理上行随机接入信道(Physical Random Access Channel,PRACH)的作用是随机接入,是用户进行初始连接、切换、连接重建及上行同步的唯一途径。要确保用户接入的成功率,合理规划物理上行随机接入信道前导码,对网络的接入性能与容量起到至关重要的作用。规划前导码的过程涉及小区的覆盖半径、场景、前导格式及循环位移、物理随机接入信道、前导起始资源块位置的等方面的确定。
For the LTE network, the role of the physical uplink random access channel is random access, which is the only way for users to connect, switch, link and uplink synchronization. To ensure that users can access the success rate of physical uplink random access preamble access performance and capacity of the network planning plays an important role in the process of planning, the preamble involves determining the coverage radius, the scene, the preamble formats and cyclic displacement, PRACH Configration Index, the leading position of the initial resource block etc.
出处
《广西通信技术》
2016年第4期37-40,共4页
Guangxi Communication Technology
关键词
上行物理随机接入信道前导码
资源块
前导格式
逻辑根序列
Uplink Physical Random Access Channel Preamble
Resource Block
Preamble Format
Logical Root Sequence