What is PCI in LTE?
A Physical Cell Id (PCI) is the identifier of a cell in the physical layer of the LTE net- work, which is used for separation of different transmitters. Due to the construction of PCIs, the number of PCIs are limited to 504.
What is PCI in NR?
Each 5G NR cell corresponds to a Physical Cell ID (PCI) and it is used to distinguish cells on the radio side. The PCI planning for 5G NR is very much similar to PCI planning for LTE and scrambling code planning for 3G UMTS.
How many PCI are in 5G NR?
1008 unique PCIs
5GNR supports 1008 unique PCIs .
Why PCI is important in LTE?
Physical Cell ID (PCI) is one of the most important cell’s identifier in the wireless network of LTE system. To assign PCI correctly and efficiently will increase resource utilization and QoS of the LTE system for subscribers. Poor planning results in PCI conflicts or collisions which impact network performance.
How is PCI calculated in LTE?
The LTE PCI calculator takes Cell Group Number (Physical Layer Cell Id Group) and Cell Number (Physical Layer Sub Cell Id) as inputs. PCI is the shirt form of Physical Layer Cell Identity. It is calculated based on PSS and SSS. PSS stands for Primary Sync Sequence which gives cell number.
What is the use of PSS and SSS in LTE?
In LTE, there are two downlink synchronization signals which are used by the UE to obtain the cell identity and frame timing. The division into two signals is aimed to reduce the complexity of the cell search process….PSS Generation.
| N I D ( 2 ) | Root index u |
|---|---|
| 1 | 29 |
| 2 | 34 |
What is PCI ran?
In Long Term Evolution (LTE) networks, physical cell identity allocation (PCI) is crucial for quality of service and somewhat similar to scrambling code allocation in WCDMA. It identifies the cell in mobility functions such as cell reselection and handover.
What is the range of PCI?
0 to 503
The PCI range from 0 to 503. and SSS range from 0 to 167. In order to have a proper RF planning, we should avoid to have the same PCI or PSS value as this will lead to Network Entry failure.
What is PCI planning?
PCI planning is one of the most important things to understand while planning an LTE network and it is usually left untouched in most of the LTE manuals and text-books. As already explained, the PCI is decoded using the SSS and the PSS and can be given by the following equation. PCI = 3*SSS + PSS.
How is PCI calculated?
Per capita income (PCI) or total income measures the average income earned per person in a given area (city, region, country, etc.) in a specified year. It is calculated by dividing the area’s total income by its total population. Per capita income is national income divided by population size.
What is PSS LTE?
In LTE, there are two downlink synchronization signals which are used by the UE to obtain the cell identity and frame timing. Primary synchronization signal (PSS) Secondary synchronization signal (SSS)
What does PCI stand for in LTE network?
PCIs, or Physical Cell Identifiers, in LTE networks provide a psuedo- unique value for identifying eNodeBs. The PCI value is created from two components – PSS and SSS. The PSS, Primary Synchronization Signal, has the value 0, 1, or 2.
What is the value of the PCI signal?
The PCI value is created from two components – PSS and SSS. The PSS, Primary Synchronization Signal, has the value 0, 1, or 2. The SSS, Secondary Synchronization Signal, can have a value between 0 and 167. The PCI value is [ (3x SSS)+ (PSS)], resulting in a value between 0 and 503.
Why is PCI important in 4G and 5G?
PCI planning is one of the most important steps in 4G and 5G network planning and construction. To design PCI properly and efficiently will increase resource utilization and QoS of the 4G and 5G system for subscribers. Poor planning results in PCI collisions or conflicts which impact network performance.
Which is the primary synchronization signal in PCI?
The PCI value is created from two components – PSS and SSS. The PSS, Primary Synchronization Signal, has the value 0, 1, or 2. The SSS, Secondary Synchronization Signal, can have a value between 0 and 167. The PCI value is [(3x SSS)+(PSS)], resulting in a value between 0 and 503.