Transition Device for Wireless Interface Configuration Conversion
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Solution Overview
Problem
The current CPRI-based RF-PHY split in wireless networks is costly for 5G deployments due to increased carrier bandwidth and number of antennas, requiring either data compression or a higher functional split in the protocol stack, which can lead to signal quality degradation or the need for new RRU and BBU designs.
Innovation Solution
A transition device that detects and configures interface functions between remote radio units and central baseband units, enabling automated and flexible interconnection and conversion between different interface configurations, such as CPRI, eCPRI, C1, C2, and C3, without the need for manual adaptations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If CPRI-based RF-PHY split is used in 5G networks with increased carrier bandwidth and number of antennas, then the network can support higher data rates and more antennas, but the cost and complexity increase significantly requiring either data compression or higher functional split
Solution Approach 1:
The patent introduces a transition device as an intermediary component between the remote radio unit and baseband unit. This transition device automatically detects interface configurations (CPRI, eCPRI, C1, C2, C3) and performs conversion between different interface types, eliminating the need for manual adaptations and reducing overall system complexity while maintaining high data rate capacity
Solution Approach 2:
The transition device changes the interface configuration parameters dynamically by detecting the first interface configuration from the remote radio unit and the second interface configuration from the baseband unit, then converting between them. This allows the system to adapt to different interface types without increasing complexity at the remote radio unit or baseband unit
2Adaptability or versatility
If manual interface adaptations are performed for different interface configurations, then the system can support multiple interface types, but the deployment time and operational complexity increase
Solution Approach 1:
The transition device performs self-configuration by automatically detecting the interface configurations of both the remote radio unit and baseband unit, and autonomously establishing the appropriate data flow and conversion parameters. This eliminates the need for manual interface adaptations and significantly reduces deployment time while maintaining support for multiple interface types
3Reliability
If higher functional split in protocol stack is implemented, then the network can avoid data compression and maintain signal quality, but new RRU and BBU designs are required increasing deployment complexity
Solution Approach 1:
The patent segments the interface conversion function into a separate transition device, allowing the remote radio unit and baseband unit to maintain their existing designs while still supporting multiple interface configurations. This segmentation avoids the need for new RRU and BBU designs while maintaining signal quality through proper interface conversion
Data Source
AI summary
A method and transition device for enabling communication of data between a remote radio unit and a central baseband unit in a wireless network. When detecting a first interface configuration used by the remote radio unit and a second interface configuration used by the baseband unit, the transition device configures interface functions, based on the first and second interface configurations. The interface functions are selected from a set of predefined interface functions associated with different interface configurations. The transition device then establishes a data flow between the remote radio unit and the central baseband unit over the transition device, and performs conversion between the first interface configuration and the second interface configuration for data communicated in the data flow, using the selected interface functions.