CPRI Data Encapsulation in Ethernet Frames for Radio Access Networks
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Solution Overview
Problem
The existing CPRI data transmission methods are not flexible enough, as they cannot be transmitted using Ethernet, limiting the flexibility and efficiency of data transmission in radio access networks.
Innovation Solution
A method and apparatus for receiving a CPRI data stream by generating an Ethernet frame that includes a segment of the CPRI data stream and a CPRI data identifier, allowing the transmission of CPRI data over Ethernet interfaces, enabling flexible CPRI data transmission between network apparatuses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If CPRI data is transmitted using traditional point-to-point fiber connection, then transmission reliability is ensured, but transmission flexibility and Ethernet utilization are limited
Solution Approach 1:
The patent introduces an intermediary conversion process where CPRI data streams are encapsulated into Ethernet frames. The CPRI data stream is segmented and packaged with identification information, then transmitted through Ethernet infrastructure. This intermediary Ethernet framing mechanism enables CPRI data to leverage Ethernet's flexibility and resource sharing capabilities while maintaining data integrity and reliability through proper framing and identification.
2Productivity
If dedicated fiber connections are used for CPRI transmission, then transmission stability is maintained, but resource utilization and cost efficiency deteriorate
Solution Approach 1:
The patent makes the Ethernet interface universal by enabling it to carry both traditional Ethernet traffic and CPRI data streams through frame encapsulation. The Ethernet infrastructure serves multiple functions: it transmits standard data packets and simultaneously carries CPRI fronthaul traffic. This multi-functionality improves resource utilization and reduces the need for dedicated fiber connections while maintaining transmission stability through proper protocol handling.
3Adaptability or versatility
If CPRI data stream is directly transmitted over Ethernet, then transmission flexibility improves, but data identification and segmentation complexity increases
Solution Approach 1:
The patent segments the continuous CPRI data stream into discrete blocks that can be encapsulated into Ethernet frames. Each segment is packaged with identification information including CPRI data identifiers and sequence information. This segmentation approach enables the data stream to be transmitted over Ethernet's packet-switched infrastructure while maintaining the ability to reconstruct the original stream at the receiving end, thus achieving flexibility without excessive complexity.
Data Source
AI summary
A method and an apparatus for receiving a common public radio interface (CPRI) data stream, a method and an apparatus for receiving an Ethernet frame, and a system, where a first network apparatus receives a first CPRI data stream using a CPRI of the first network apparatus, where the first network apparatus generates a segment of the first CPRI data stream according to the first CPRI data stream, the first network apparatus generates an Ethernet frame, where the Ethernet frame includes the segment of the first CPRI data stream and a CPRI data identifier, and the CPRI data identifier indicates that the Ethernet frame carries CPRI data, and the first network apparatus sends the Ethernet frame to a second network apparatus using an Ethernet interface of the first network apparatus.