Jun 3, 2023 · PSC (Primary Scrambling Code) is a key component of the Universal Mobile Telecommunications System (UMTS) and the wider third-generation (3G) cellular network technology. It plays a crucial role in establishing and maintaining wireless communication links between mobile devices and base stations.

In Summary, The Primary Scrambling Code (PSC) in wcdma serves as a single identifier for each cell in a 3g network. It is is essential for cell Search, synchronization, and connection establishment by mobile devices, contributing to efficient network management, interference avoidance, and security considations.

Dec 16, 2017 · The PSC is a set of 512 scrambling codes used to, well, scramble downlink transmissions so the UE can distinguish signals from different cells. The PCI is a set of 504 IDs (derived from 3 primary synch sequences and 168 secondary sequences) used to scramble certain downlink transmissions so the UE can distinguish signals from different cells.

Mar 19, 2019 · In this paper, the problem of scrambling code (SC) planning and optimization in 3G networks is addressed. Scrambling Codes are used to identify and distinguish cells from one another in WCDMA...

Jun 6, 2020 · 3G UMTS มี PSC (scrambling code) ที่ต่างกัน; 4G LTE มี PCI ที่ต่างกัน

Jun 18, 2009 · WCDMA系统中的扰码规划类似于GSM系统中的频率规划，主要是为小区分配主扰码 (PSC)。 WCDMA系统中下行链路共有512个PSC，每个小区分配一个PSC作为该小区的识别参数之一。 当小区的数量超过512个时，可重复分配一个PSC给一个小区，只要保证使用相同PSC的小区之间的距离足够大，使得接收信号在另外一个使用同一PSC的小区覆盖范围内低于门限电平即可。 所以扰码规划的主要思想是确定两个使用相同扰码的小区的最小无线传播距离——复用 …

Jun 3, 2023 · PSC is widely used in cellular networks, such as 3G (UMTS) and 4G (LTE), to ensure secure and efficient communication. In these networks, PSC is applied to the uplink and downlink channels, allowing multiple users to share the available bandwidth while maintaining privacy and minimizing interference.

psc：主扰码，用来在小区搜索过程中解码主公共控制物理信道（pccpch），从而解调出系统下发的广播消息，得到小区信息。 主扰码有512个，分为64组，每组8个。

Secondary Synchronisation Codes (SSC), transmitted in parallel with the Primary SCH. Contents : a pre-defined bit sequence. The P-CPICH is scrambled by the primary scrambling code (PSC).// UE detect PSC from P-CPICH. The P-CPICH is broadcast over the entire cell.

Dec 27, 2017 · 公式如下：PCI=PSS+3*SSS，其中PSS取值为0...2（实为3种不同PSS序列），SSS取值为0...167（实为168种不同SSS序列)，利用上述公式可得PCI的范围是从0...503,因此在物理层存在504个PCI。 其实，可以把PCI理解为扰码，就像在WCDMA系统中下行扰码用于区分扇区一样，对待发送的数据进行加扰，以便终端可以区分不同扇区。 而从网络操作维护级别来看，CI（Cell Identity）唯一标识一个小区，在网络中不能重复。 但PCI却可以重复，因 …