Common Control Channel Message Configuration for Wireless Systems
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Solution Overview
Problem
Current UMTS standards limit the size of messages that can be transmitted via the CCCH logical channel, which can result in essential quality and timing information being omitted, especially when a mobile device moves to a new cell or initiates a call, due to restrictions on transport block sizes and message formatting.
Innovation Solution
The introduction of new configurations for transmitting control information using a common control channel (CCCH) logical channel/transport channel, including additional channels, increased message block sizes, new channel mapping configurations, and message formats, allowing mobile devices to select the most suitable configuration based on message size, while ensuring compatibility with devices that do not support these new configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If new configurations with increased message block sizes are introduced, then the message transmission capacity is improved, but the device complexity increases
Solution Approach 1:
The patent introduces new transport block sizes and message block sizes as configurable parameters. The network can indicate available configurations through system information messages, allowing flexible adjustment of message capacity without hardcoding complex structures. Mobile devices select appropriate configurations based on message size requirements, achieving variable capacity with manageable complexity through parameterization rather than structural overhaul.
2Adaptability or versatility
If multiple new configurations are provided for different message sizes, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The patent implements dynamic configuration selection where mobile devices can choose from multiple pre-defined transport block sizes and message block sizes based on the actual message size. The network dynamically indicates available configurations through system information, enabling adaptability to different message sizes while keeping device complexity manageable through selective configuration rather than supporting all configurations simultaneously.
Solution Approach 2:
The patent provides a set of pre-defined transport block sizes and message block sizes that cover typical message scenarios. Rather than implementing unlimited flexible sizing, the system uses a finite set of configurations that adequately handles most cases, reducing device complexity while maintaining sufficient adaptability for practical use.
3Ease of operation
If legacy configurations are maintained for compatibility, then the ease of operation is improved, but the loss of information occurs due to message size limitations
Solution Approach 1:
The patent makes the common control channel capable of handling both legacy and enhanced message sizes through multiple transport block size configurations. The same CCCH logical channel can operate with different transport block sizes depending on configuration, allowing it to serve both legacy devices (with smaller blocks) and enhanced devices (with larger blocks), thus achieving multi-functionality without requiring separate channels.
Solution Approach 2:
The patent segments the message transmission capability into multiple transport block size options. Instead of a single fixed-size channel, the system divides the capability into discrete size levels (e.g., first transport block size, second transport block size, etc.), allowing messages to be transmitted in appropriately sized blocks. This segmentation enables legacy compatibility while providing pathways for larger messages when needed.
Data Source
AI summary
A method and apparatus for providing new configurations for transmitting control information between a mobile terminal and a network using a common control channel (CCCH) logical channel/transport channel. The new configurations enable messages to be sent that are larger than currently allowed and the availability of the new configurations is indicated such that mobile terminals that do not support the new configurations are not impacted.