Specification Overview

The first version of the CPRI interface specification will have the following scope:

1. A digitized and serial internal base station interface between 'Radio Equipment Control' (REC)
and 'Radio Equipment' (RE) will be specified.

2. The necessary items for transport, connectivity and control are included in the Specification. This includes User Plane data, Control Plane transport mechanisms, and means for synchronisation

3. The Specification will cover Layers 1 and 2 of the OSI stack.

3a. The physical layer (layer 1) will support both an electrical interface (i.e. what is used in traditional base stations), and an optical interface (e.g. for base stations with remote radio equipment).

3b. Layer 2 shall support flexibility and scalability.

4. The Specification shall comply with 3GPP UTRA FDD release 5.

Interface Specification Download Terms and Conditions

Non-assertion of Essential Patents and Copyrights

The Parties shall not assert any of their Essential patents against any Party or a third party using, developing, having developed, manufacturing, or having manufactured and/or selling any RE and/or REC product that includes an interface which is fully compliant to the Specification, but solely to the extent that interface is fully compliant to the Specification.

Such obligations not to assert shall apply against any Party or third party provided that and as long as such Party/party does not assert any of its Patents against the non-asserting Party, its affiliates, subcontractors producing the non asserting Party's product and/or any of its customers.

In this event the applicable Party shall, subject to reciprocity and upon the asserting party's request offer on fair, reasonable and non discriminatory terms and conditions a license to its Essential patents to use, develop, having developed, manufacture, or having manufactured and/or selling any RE and/or REC product that includes an interface which is fully compliant to the Specification, but solely to the extent that interface is fully compliant to the Specification.

"Essential patents" means any Specification patents or patent applications of such a nature that a party could not, technically, manufacture and/or sell RE and/or REC products that include an interface which is fully compliant to the Specification without infringing such patent or patent application.

"Relevant patents" shall mean any patents or patent applications whose claims subject matter can be used or interfaces with the Specification and that would be infringed by any product or application used or interfacing with the Specification.

"Patents" shall mean any Essential or Relevant patents or patent applications as defined above.

The copyright for the Specification is owned jointly by all Parties. The Parties shall not assert any copyright in order to prevent free copying of the Specification in connection with the use thereof.

No License

IN ORDER TO AVOID ANY DOUBT, BY DOWNLOADING THE SPECIFICATION NO EXPRESS OR IMPLIED LICENSE AND/OR ANY OTHER RIGHTS WHATSOEVER ARE GRANTED FROM ANYBODY.

Before downloading the Interface Specification you must read and accept the above stipulated Specification Download Terms and Conditions.

CPRI specifications version 1.4, 2.1, and 3.0 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. Version 3.0 contains the addition of WiMAX, an increase in the line bit rate and the inclusion of change requests.

Radio Equipment (RE) and
Radio Equipment Control (REC) description

Download document describing (defining) RE and REC

Comments and proposals

Comments and proposals to CPRI can be submitted from www.cpri.info/comments.html (In English only).

CPRI规范1.4版本,2.1版本和3.0版本现在可以在本网站的Specification区下载。兼容规范的产品将由各家公司各自推向市场。

2007年3月6日
CPRI规范1.4版本,2.1版本和3.0版本现在可以下载。3.0版本新增了用以支持WiMAX的特性，增加了一种更高的线路速率，同时还包含了一些版本的修订。版本1.4和版本2.1不变。

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2006年8月29日
CPRI规范1.4版本和2.1版本现在可以下载。1.4版本包含了对1.3版本的修饰和修正。2.1版本包含了对2.0版本的修饰和修正。

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2004年10月15日
CPRI规范1.3版本和2.0版本现在可以下载。1.3版本包含了对1.2版本的修饰和修 正。2.0版本包含了对网络拓扑的支持。

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2003年10月9日
CPRI 发起方诚邀各方移动电信系统厂商与无线设备供应商参加将于11月18日在伦敦召开的“CPRI 发布会”。

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