Heterogeneous Communication Service Interworking via Segmented Frame Structure
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Solution Overview
Problem
Heterogeneous communication systems, such as WiBro and WiBro evolution systems, face challenges in interworking due to differences in sub-channel structures and signal formats, requiring a specific method to enable seamless service interworking.
Innovation Solution
A method and system for transmitting and receiving data bursts in mobile stations and base stations, utilizing a frame structure with time-divided downlink regions and frequency-divided uplink regions, allowing for service interworking between heterogeneous systems by demodulating and decoding broadcast messages and assigning data bursts accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heterogeneous communication systems (WiBro and WiBro evolution systems) operate with different sub-channel structures and signal formats, then each system can maintain its own optimized performance, but service interworking between the systems becomes difficult to achieve
Solution Approach 1:
The patent introduces a base station that acts as an intermediary between WiBro and WiBro evolution systems. The base station receives data from one system, performs protocol conversion and packet processing, and forwards it to the other system. This mediator approach enables service interworking while allowing each system to maintain its native sub-channel structures and signal formats, thus resolving the contradiction between maintaining system-specific performance and achieving cross-system compatibility.
2Adaptability or versatility
If a unified frame structure is used for both WiBro and WiBro evolution systems, then service interworking is facilitated, but the complexity of accommodating different sub-channel structures and signal formats increases
Solution Approach 1:
The patent segments the frame structure into distinct regions: a downlink assignment region containing DL-MAP messages for WiBro systems, and an uplink assignment region containing UL-MAP messages for WiBro evolution systems. By dividing the frame into system-specific segments, the patent enables service interworking through a unified frame while maintaining separate, optimized sub-channel structures for each system, thus reducing the complexity of accommodating heterogeneous requirements.
Solution Approach 2:
Different parts of the frame structure are assigned different properties tailored to specific systems. The downlink region uses DL-MAP messages with sub-channel structures optimized for WiBro, while the uplink region uses UL-MAP messages with structures optimized for WiBro evolution systems. This local quality approach allows each system to operate with its native signal formats within the unified frame, reducing overall complexity while enabling interworking.
3Ease of manufacture
If separate frame structures are maintained for WiBro and WiBro evolution systems, then each system can operate independently with optimized parameters, but resource allocation efficiency and system coordination deteriorate
Solution Approach 1:
The patent merges WiBro and WiBro evolution systems into a single base station infrastructure with a unified frame structure. By combining previously separate systems into one coordinated framework, the patent improves resource allocation efficiency through centralized control while maintaining system-specific optimizations through segmented frame regions. This merging approach enables better resource utilization and system coordination compared to fully independent operations.
Data Source
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AI summary
Disclosed is a system and method for service interworking between heterogeneous communication systems. The service interworking system includes a first system and a second system that is evolved from the first system and can decode control and broadcast signals used in the first system. The first and second systems provide services by using frequency bands that do not overlap with each other.