**What does PCI stand for in the context of 4G LTE and 5G NR?** In the context of 4G LTE and 5G NR, PCI stands for *Physical Cell ID.* **What is another term for the Physical Cell ID (PCI)?** Another term for the Physical Cell ID (PCI) is *PHY-layer cell id.* **What is a Physical Cell ID (PCI)?** A PCI is *an identifier used to indicate the physical identity of a cell during the cell selection procedure.* > **What is the Physical Cell ID (PCI) used for?** > The PCI is used for *downlink synchronization.* **What two signals make up a Physical Cell ID (PCI)?** Two two signals that make up A PCI are the: 1. Primary Synchronization Signal (PSS). 2. Secondary Synchronization Signal (SSS). > **What is the formula for determining the Physical Cell ID (PCI) based on the PSS and SSS?** > The formular for determining the Physical Cell ID (PCI) based on the PSS and SSS is: *$PCI=(3\cdot SSS)+PSS$.* **Between what two numbers can the PSS be in 4G LTE and 5G?** In 4G LTE and 5G, the PSS can be between *0 and 2.* > **How is the PSS generated in 4G LTE?** > In 4G LTE, the PSS is generated *using the Zadoff-Chu sequence.* > > **How is the PSS generated in 5G?** > In 5G, the PSS is generated using *an m-sequence.* **Between what two numbers can the SSS be in 4G LTE?** In 4G LTE, the SSS can be between *0 and 167.* > **How is the SSS generated in 4G LTE?** > In 4G LTE, the SSS is generated *using the concatenation of two m-sequences.* **Between what two numbers can the SSS be in 5G?** In 5G, the SSS can be between *0 and 335.* > **How is the SSS generated in 5G?** > In 5G, the SSS is generated *using the PN Gold sequence.*