Common Radio Interface for Multi-Standard Frame Synchronization
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Solution Overview
Problem
Current Common Public Radio Interface (CPRI) standards, such as CPRI V2.0, are limited to supporting only WCDMA R6 and earlier versions, failing to provide efficient transmission and frame synchronization for other radio standards like IEEE 802.16e and GSM, due to differences in radio frame timing, frame number identification, and data rates.
Innovation Solution
A method and device for transferring multi-standard radio service data through a common radio interface, involving the design of a radio service frame timing mechanism and IQ data filling rules, allowing for uniform transmission and frame synchronization across various standards by configuring frame timing information and IQ container mapping methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If CPRI specification is designed for 3G mobile communication system (WCDMA), then Layer 1 and Layer 2 communication protocols can be implemented between baseband control element and RF element, but the interface cannot support other radio standards (GSM, IEEE 802.16e, WiMAX) due to differences in frame timing, frame number identification, and data rates
Solution Approach 1:
The patent applies universality by designing a common radio interface that can handle multiple radio standards (WCDMA, GSM, IEEE 802.16e, WiMAX) through a unified frame structure. The interface uses a common time slot unit and frame timing mechanism that can accommodate different standards by configuring appropriate parameters, eliminating the need for separate interface designs for each standard.
Solution Approach 2:
The patent employs parameter changes by allowing the frame timing, time slot duration, and frame number identification parameters to be dynamically configured based on the required radio standard. This enables the same physical interface to support different standards by changing operational parameters rather than altering the fundamental interface architecture.
2Productivity
If different radio standards use different frame timing and data rates, then each standard can be optimized for its specific requirements, but a common interface cannot provide uniform transmission and frame synchronization across standards
Solution Approach 1:
The patent applies segmentation by dividing the transmission frame into standardized time slot units that are common across all standards. Each radio standard's data is segmented into these uniform time slots, allowing efficient transmission tailored to each standard's requirements while maintaining synchronization through the common time slot structure.
Solution Approach 2:
The patent uses periodic action by establishing a common frame timing mechanism with regular time slots that recur at defined intervals. This periodic structure ensures that frame synchronization is maintained across different standards, with each standard's data transmitted in regularly occurring time slots that align with the common frame structure.
3Ease of manufacture
If CPRI interface is designed with fixed frame structure for WCDMA, then implementation is simplified, but the interface lacks flexibility to adapt to technological advancements and new radio standards
Solution Approach 1:
The patent applies dynamics by creating a flexible frame structure where time slot durations, frame lengths, and timing parameters can be dynamically adjusted based on the required radio standard. This dynamic capability allows the interface to adapt to new standards and technological advancements while maintaining a consistent basic architecture that simplifies implementation.
Data Source
AI summary
The embodiments of the present invention relate to a method and a device for transferring radio service data. The method includes: designing a radio service frame timing mechanism and/or a rule of filling IQ data for a plurality of standards; configuring frame timing mechanisms corresponding to various services according to the designed radio service frame timing mechanism and/or the rule of filling IQ data for a plurality of standards; and transmitting multi-standard radio service data according to the configured frame timing information and/or methods of mapping IQ containers. The device includes a determination unit, a configuring unit and a transfer unit. Thus, uniform transmission of radio IQ data and frame synchronization for different standards may be enabled via a common radio interface between a Radio Equipment Controller (REC) and a Radio Equipment (RE).