Dynamic Primary Carrier Selection in Multi-Carrier Systems
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Solution Overview
Problem
In wireless communication systems using multi-carriers, the processing load of terminals is increased due to inefficient resource management, as terminals must process map messages on all carriers, and channel characteristics can cause unnecessary resource consumption when the primary carrier's quality deteriorates compared to secondary carriers.
Innovation Solution
A method and apparatus that dynamically change the primary carrier based on channel quality information and load distribution values, allowing the base station to direct terminals to switch to a carrier with better channel characteristics, thereby optimizing resource allocation and reducing processing loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the map message is transmitted through the primary carrier, then the terminal's processing load is reduced, but wireless resources are consumed inefficiently when the primary carrier's channel characteristic deteriorates
Solution Approach 1:
The patent implements dynamic primary carrier switching based on channel quality measurements. The system continuously monitors channel characteristics of multiple carriers and dynamically selects the optimal carrier for map message transmission, transitioning from a static primary carrier assignment to a dynamic selection mechanism that adapts to changing channel conditions
Solution Approach 2:
The system changes the parameter of carrier selection by evaluating channel quality metrics (such as SINR, channel gain) and switching the primary carrier based on these parameter changes. This allows the system to optimize resource consumption by selecting carriers with better channel characteristics when conditions change
2Reliability
If the map message is transmitted on multiple carriers, then resource allocation information is provided comprehensively, but the terminal must process the map message on all carriers increasing processing load
Solution Approach 1:
The patent extracts the map message transmission function from multiple carriers and concentrates it on a single dynamically selected primary carrier. By separating the control information transmission (map message) from data transmission, the system ensures reliable resource allocation information delivery while reducing terminal processing complexity to handling only one map message per frame
Data Source
AI summary
An apparatus for managing a multi-carrier in a communication system supporting the multi-carrier receives channel quality information of multi-carriers from a terminal and directs the terminal to change a primary carrier from a current primary carrier to one carrier of the multi-carriers on the basis of reference information including channel quality information.