Common Public Radio Interface

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Info & FAQ

Information & Frequently Asked Questions

In the Roadmap document, future planned versions of the CPRI Specification are outlined.

The two presentations below give an outline of the CPRI cooperation. They were first communicated at the CPRI Day in November 2003

Read more 1 and Read more 2

Q: How can my company benefit from CPRI?

A: CPRI is a cooperation between five companies: Ericsson, Huawei, NEC and Nokia. The CPRI Specification will be made public, and will be free for all companies to use. Progress on the specification work will be reported regularly. In addition anyone who wishes may contribute ideas, proposals and comments to CPRI during the specification work.

Q: How can my company contribute proposals and comments to CPRI?

A: Comments and proposals to CPRI can be submitted from a form on this homepage, see www.cpri.info/comments.htm.

Q: Why is the CPRI interface not defined by existing standards bodies such as 3GPP?

A: The CPRI initiative is a complement to current activities in formal standards organizations such as 3GPP and 3GPP2. There are numerous industry forums similar to CPRI (e.g. Bluetooth SIG, Open Mobile Alliance, OMA) in which system vendors and other companies participate.

CPRI cooperation is now working on increasing efficiency and the inclusion new features which will be published in new versions of the CPRI specification in due time.

May 10, 2019
CPRI Cooperation is releasing a new version of eCPRI Specification (eCPRI 2.0). The new specification will enhance the support for the 5G Front-haul by providing functionality to support CPRI (7.0) over Ethernet allowing for CPRI and eCPRI interworking.

May 10, 2019
The CPRI Specification eCPRI 2.0 (in addition to the eCPRI 1.2 and classic CPRI 1.4, 2.1, 3.0 , 4.0, 4.1, 4.2, 5.0, 6.0, 6.1, 7.0 ) is now available for download on the Specification section of this homepage. The updated eCPRI 2.0 specification enhances the support for the 5G Front-haul by providing functionality to support CPRI (7.0) over Ethernet allowing for CPRI and eCPRI interworking. The eCPRI specification supports the 5G Front-haul and provides enhancements to meet the increased requirements of 5G. The successful cooperation to continuously develop the CPRI has made this specification a well-established interface on the market for all Radio Base Station products released by the individual CPRI Parties.

June 25, 2018
CPRI cooperation has agreed to work for an updated specification eCPRI (2.0). The new specification will enhance the support for the 5G Front-haul by providing functionality to support CPRI (7.0) over Ethernet allowing for CPRI and eCPRI interworking.

June 25, 2018
The CPRI Specification eCPRI 1.2
(in addition to the classic CPRI 1.4, 2.1, 3.0 , 4.0, 4.1, 4.2, 5.0, 6.0, 6.1, 7.0 ) is now available for download on the Specification section of this homepage. The updated eCPRI 1.2 specification, presentation and Transport req. makes a few editorial updates primarily for clarity. The eCPRI specification will support the 5G Front-haul and will provide enhancements to meet the increased requirements of 5G. The successful cooperation to continuously develop the CPRI has made this specification a well-established interface on the market for all Radio Base Station products released by the individual CPRI Parties.

Januari 31, 2018
The CPRI Specification eCPRI 1.1
(in addition to the classic CPRI 1.4, 2.1, 3.0 , 4.0, 4.1, 4.2, 5.0, 6.0, 6.1, 7.0 ) is now available for download on the Specification section of this homepage. The updated eCPRI 1.1 specification, presentation and Transport req. makes a few editorial updates primarily for clarity. The eCPRI specification will support the 5G Front-haul and will provide enhancements to meet the increased requirements of 5G. The successful cooperation to continuously develop the CPRI has made this specification a well-established interface on the market for all Radio Base Station products released by the individual CPRI Parties.

August 31, 2017
The CPRI Specification eCPRI 1.0
(in addition to the classic CPRI 1.4, 2.1, 3.0 , 4.0, 4.1, 4.2, 5.0, 6.0, 6.1, 7.0 ) is now available for download on the Specification section of this homepage. The new specification will support the 5G Front-haul and will provide enhancements to meet the increased requirements of 5G. The successful cooperation to continuously develop the CPRI has made this specification a well-established interface on the market for all Radio Base Station products released by the individual CPRI Parties.

October 9, 2015
The CPRI Specification version 7.0 (in addition to 1.4, 2.1, 3.0 , 4.0, 4.1, 4.2, 5.0, 6.0, 6.1 ) is now available for download on the Specification section of this homepage. The new 7.0 release adds 24G line-rate to the previously released 10G LTE-Advanced. The successful cooperation to continuously develop CPRI has made this specification a well established interface on the market for all Radio Base Station products released by the individual CPRI Parties.

July 1, 2014
The CPRI Specification version 6.1 (in addition to 1.4, 2.1, 3.0 , 4.0, 4.1, 4.2, 5.0, 6.0 ) is now available for download on the Specification section of this homepage. The new 6.1 release adds 8G and 12G line-rate to the previously released LTE-Advanced. The successful cooperation to continuously develop CPRI has made this specification a well established interface on the market for all Radio Base Station products released by the individual CPRI Parties.

August 30, 2013
The CPRI Specification version 6.0 (in addition to 1.4, 2.1, 3.0 , 4.0, 4.1, 4.2, 5.0 ) is now available for download on the Specification section of this homepage. The new 6.0 release includes LTE-Advanced. The successful cooperation to continuously develop CPRI has made this specification a well established interface on the market for all Radio Base Station products released by the individual CPRI Parties.

September 21, 2011
The CPRI Specification version 5.0 (in addition to 1.4, 2.1, 3.0 , 4.0, 4.1, 4.2) is now available for download on the Specification section of this homepage. The new 5.0 release extends the specification to encompass GSM. The successful cooperation in continuously developing of CPRI has made this specification a well established interface on the market the main track for all Radio Base Station products released by the individual CPRI Parties.

November 1, 2010
The CPRI Specification version 4. 2 (in addition to 1.4, 2.1, 3.0 , 4.0, 4.1 ) is now available for download on the Specification section of this homepage. The new 4. 2 release extends the specification to encompass higher line-rates (9.8 Gbps). The successful cooperation in continuously developing of CPRI has made this specification a well established interface on the market the main track for all Radio Base Station products released by the individual CPRI Parties.

May 20, 2009
The CPRI Specification version 4. 1 (in addition to 1.4, 2.1, 3.0 , 4.0 ) is now available for download on the Specification section of this homepage. The new 4. 1 release extends the specification to encompass higher line-rates for LTE (Long Term Evolution). A variety of CPRI products have been made available to the market by the individual CPRI Parties.

October 4, 2008
The CPRI Specification versions 4.0 (in addition to 1.4, 2.1, 3.0) is now available for download on the Specification section of this homepage. The new 4.0 release extend the specification to encompass the developments for LTE (Long Term Evolution). A variety of CPRI products have been made available to the market by the individual CPRI Parties.

March 6, 2007
CPRI specifications version 1.4, 2.1, and 3.0 are now available for download. Version 3.0 contains the addition of WiMAX, an increase in the line bit rate and the inclusion of change requests. Version 1.4 and 2.1 is unchanged.

August 29, 2006
CPRI specifications version 1.4 and 2.1 are now available for download. Version 1.4 contains editorial and corrective changes from version 1.3. Version 2.1 contains editorial and corrective changes from version 2.0.

October 15, 2004
CPRI specifications version 1.3 and 2.0 are now available for download. Version 1.3 contains editorial and corrective changes from version 1.2. Version 2.0 contains support for networking.