SDR Universal Bus Architecture for Multi-Standard Coexistence
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Solution Overview
Problem
Current Software Defined Radio (SDR) systems lack a solution to complement the advantages of different structural approaches, such as pipeline, bus-oriented, and interactive network structures, when multiple radio communication standards coexist, leading to inefficiencies in data transmission and compatibility.
Innovation Solution
An SDR-based radio communication transmission system utilizing a universal bus for interconnection, combining a parallel bus for data transmission and a serial bus for instruction signal transmission, allowing the core processing unit to adaptively route data between a front-end analog interface, D/A and A/D conversion units, and storage based on data format compatibility, enabling efficient processing and storage of data across various radio standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pipeline structure is adopted where each processing module is in cascaded connection, then data transmission between modules is simplified, but the system cannot efficiently handle multiple radio communication standards simultaneously and lacks flexibility
Solution Approach 1:
The patent implements a bus-oriented architecture where processing modules can dynamically access shared resources (ADC, DAC, storage units) through a universal bus system. This allows the same hardware modules to serve multiple radio communication standards by reconfiguring their operational modes, rather than requiring dedicated cascaded paths for each standard.
Solution Approach 2:
The system employs dynamic resource allocation where processing modules can be flexibly assigned to different standards based on current operational requirements. The bus-oriented structure enables modules to switch between handling GSM, CDMA2000, WCDMA, TD-SCDMA, LTE, and other standards by reconfiguring their processing tasks in real-time.
2Adaptability or versatility
If a bus-oriented structure is adopted where each processing module is in bus-oriented interconnection, then multi-standard adaptability is improved, but data transmission efficiency decreases due to bus contention and access conflicts
Solution Approach 1:
The patent segments the bus system into multiple functional buses: a control bus for instruction signals and a data bus for transmission data. This segmentation allows simultaneous operation of control and data transfers without interference, reducing bus contention and improving overall system throughput while maintaining multi-standard support.
Solution Approach 2:
The patent introduces a central processor as an intermediary that manages bus access and coordinates data flow between processing modules. The central processor arbitrates bus requests, manages memory access, and schedules data transfers, thereby eliminating bus conflicts and ensuring efficient data transmission across multiple standards.
3Adaptability or versatility
If an interactive network structure is adopted where all processing modules are interconnected through one interaction matrix, then system flexibility is maximized, but device complexity and difficulty of control increase
Solution Approach 1:
The patent divides the interaction matrix into separate control and data bus systems, reducing the complexity of interconnections. Instead of a fully connected matrix, the segmented bus structure provides dedicated pathways for control signals and data, simplifying the physical layout and control logic while maintaining the ability to connect all processing modules.
Solution Approach 2:
The central processor acts as a mediator that manages communications between processing modules through the bus system. Rather than requiring direct peer-to-peer interconnections, modules communicate through the centralized processor which routes data and coordinates operations, thereby reducing interconnection complexity while preserving system flexibility.
4Productivity
If separate dedicated structures are designed for each radio communication standard, then processing efficiency for each standard is optimized, but system complexity and manufacturing cost increase
Solution Approach 1:
The patent designs processing modules with universal functionality that can handle multiple radio communication standards (GSM, CDMA2000, WCDMA, TD-SCDMA, LTE, etc.) through software configuration rather than hardware specialization. This allows a single set of processing modules to be efficiently deployed across different standards by loading appropriate processing algorithms and parameters.
Solution Approach 2:
The patent uses a centralized memory system that stores processing algorithms and data for multiple standards, allowing processing modules to load and execute standard-specific processing routines as needed. This virtual copying of standard-specific processing logic into a universal hardware platform maintains processing efficiency while avoiding the complexity of dedicated hardware for each standard.
Data Source
Figure 1
AI summary
The disclosure discloses a Software Defined Radio (SDR)-based radio communication transmission system. A front-end analog interface unit, a Digital-to-Analog (D/A) and Analog-to-Digital (A/D) conversion unit, a core processing unit and a storage unit adopt the universal bus for interconnection and interworking. The core processing unit is configured to acquire the front-end processed data from the front-end analog interface unit, and to choose to transmit the front-end processed data to the D/A and A/D conversion unit by the control of the universal bus according to whether the radio communication standard of the current data accords with the current working mode. The disclosure further discloses an SDR-based radio communication transmission method, which includes that: the core processing unit chooses to transmit the front-end processed data to the D/A and A/D conversion unit by the control of the universal bus according to whether the radio communication standard of the current data accords with the current working mode. The system and method of the disclosure can adapt to the coexistence of multiple radio communication standards and complement the advantages of each structure at the same time.