What is meaning of CPRI YouTube?

What is meaning of CPRI YouTube?

Common Public Radio Interface (CPRI) – YouTube.

What is CPRI and Obsai?

CPRI standardizes interfaces between the BBU and RRU, ensuring compatibility of equipment from different manufacturers. OBSAI APPROACH: OBSAI divides the base stations into four main modules: a transmission, processing, radio frequency and control module.

What is difference between CPRI and eCPRI?

The Common Public Radio Interface (CPRI) is an interface that sends data from remote radio units to base station units. Enhanced CPRI (eCPRI) is a way of splitting up the baseband functions to reduce traffic strain on the fiber. Currently telcos use CPRI interface as fronthaul connection in 4G.

Is CPRI a protocol?

It is a protocol of choice for fronthaul communications between towers and base stations (BSs) through several generations of wireless networks. CPRI has efficient and flexible I/Q data interfaces for various standards, such as GSM, WCDMA, LTE, etc.

What is high PHY and low PHY?

The PHY is broken into two, low-PHY and high-PHY. The low-PHY stays in the RUs and the high-PHY stays in the DUs. As a result, the bandwidth required on the fronthaul interface is about 20 Gb for 100 MHz bandwidth with some MIMO capabilities involved.

What is radio equipment control?

Specification of Radio Equipment Control (REC) and Radio Equipment (RE) The Common Public Radio Interface (CPRI ) is an industry cooperation aimed at defining a publicly available specification for the key internal interface of radio base stations between the Radio Equipment Control (REC) and the Radio Equipment (RE).

What is CPRI line rate?

The CPRI communications rate can be expanded to 1.2288 ~ 24.3302 Gbit/s depending on the antenna configuration and LTE bandwidth.

Is CPRI proprietary?

Historically, because each vendor would have its own implementation of CPRI, it became proprietary, said Maupile. This forces carriers to buy both their RRUs and their baseband unit from the same vendor in order for the interface to work.

What is VRAN in telecom?

Virtualized radio access networks (vRANs) are a way for telecommunications operators to run their baseband functions as software.

What is fronthaul and backhaul in 5G?

Backhaul is a widely known term that describes the link between a baseband and the core network. Fronthaul, on the other hand, connects the baseband to a remote radio unit. As it relates to small cells, operators are increasingly centralizing baseband resources and using fronthaul to connect a cluster of radios.

What is the spelling of CPRI?

Central Power Research Institute (India)

What is 5g AxC?

AxC is the short form of Antenna Carrier in CPRI standard. Definition: The CPRI standard defines AxCs (antenna carriers) for transmission and reception of the digital I/Q data. An AxC is a container for one I/Q sample.

What is CU and DU in telecom?

The 5G BTS named gNB can be divided into two physical entities named CU (Centralized Unit) and DU (Distributed Unit). CU provides support for the higher layers of the protocol stack such as SDAP, PDCP and RRC while DU provides support for the lower layers of the protocol stack such as RLC, MAC and Physical layer.

What is split 2 in 5G?

Split 2: RRC/PDCP split. Radio resource control and packet data convergence control are split from the Layer 2 radio link control (RLC). Split 2 can be deployed in two variants: Variant 1: RRC, service data adaptation protocol (SDAP) & PDCP in the same central unit as one entity; no control and user split.

What is O-RAN 7.2 Split?

O-RAN proposes using option 7-2 which splits the physical layer (PHY) into a high-PHY and a low-PHY. For option 7-2, the uplink (UL), CP removal, fast Fourier transform (FFT), digital beamforming (if applicable), and prefiltering (for PRACH (Physical Random Access Channel) only) functions all occur in the RU.

What is GSM radio interface?

The GSM radio interface is based on a TDMA structure with eight time slots and 200 kHz carrier bandwidth. To increase data rates, today’s GPRS and EDGE terminals can use multiple time slots for transmission, reception, or both.

What is BBU pool?

BBU pool: a BBU pool is located at a centralized site like a cloud or a data centers. It comprises of multiple BBU nodes that have high computational and storage capabilities. Those BBUs are responsible for processing resources and dynamically allocating them to RRUs based on the current network needs.

What is the name of GSM radio interface?

The Um interface is the air interface for the GSM mobile telephone standard. It is the interface between the mobile station (MS) and the Base transceiver station (BTS). It is called Um because it is the mobile analog to the U interface of ISDN.