MAP Message Frame Version Indicator for Wireless Compatibility
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Solution Overview
Problem
Broadband wireless communication systems face challenges in supporting different frame structures, particularly in ensuring compatibility between legacy and new systems, where new systems must provide services to both old and new mobile stations without errors, while also distinguishing between old and new frame structures.
Innovation Solution
The system introduces a new MAP message structure with an indicator that distinguishes between old and new standards, allowing the Base Station to generate and transmit MAP messages that include frame version information, enabling the Mobile Station to determine the frame structure and support multiple versions of MAP structures, thereby ensuring backward compatibility and efficient resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a new system supports both old and new frame structures, then compatibility with legacy systems is improved, but device complexity increases due to the need to handle multiple frame versions
Solution Approach 1:
The patent applies parameter changes by introducing a frame version indicator parameter in the MAP message header. This parameter allows the system to differentiate between old and new frame structures through a simple version number, enabling Mobile Stations to adapt to different frame formats without requiring complex detection mechanisms. The version indicator serves as a key parameter that changes to signal the frame structure type, resolving the contradiction by providing a straightforward method for multi-version support.
2Measurement precision
If MAP messages include frame version information, then the Mobile Station can determine frame structure accurately, but the overhead of control messages increases
Solution Approach 1:
The patent implements partial action by adding only the essential frame version indicator to the MAP message header, rather than including complete frame structure definitions. This minimal addition provides sufficient information for Mobile Stations to identify and process the appropriate frame structure without substantially increasing message overhead. The solution uses just enough information (the version indicator) to achieve accurate frame structure determination while avoiding excessive data transmission.
3Ease of operation
If the system uses a unified MAP message format for both old and new standards, then ease of operation is improved, but the ability to distinguish between different frame structures deteriorates
Solution Approach 1:
The patent applies segmentation by dividing the MAP message into distinct segments: a header portion containing the frame version indicator and a body portion containing frame-specific information. This segmentation allows the message to maintain a unified structure for ease of processing while simultaneously preserving the ability to distinguish between different frame structures through the version indicator in the header. The segmented approach enables Mobile Stations to first identify the frame type and then process the appropriate content.
Data Source
AI summary
An apparatus and method for supporting different frame structures in a broadband wireless communication system are provided. A communication method of a Base Station (BS) includes determining a frame structure to be provided. A MAP message including an indicator that indicates a new standard is generated, when the provided frame structure conforms to the new standard. The generated MAP message is transmitted by performing physical layer encoding thereon. Accordingly, signaling is defined to report a currently provided frame structure to an MS, and thus, a system can support different frame structures.