Configurable Wireless Link Adaptation via CAP Module
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Solution Overview
Problem
Current IEEE 802.16 standard-based wireless systems lack specific guidelines for radio resource allocation and transmission parameter setting, necessitating flexible and customizable link adaptation solutions to manage radio conditions effectively.
Innovation Solution
The implementation of a Correction and Action Policy (CAP) module within the base station, allowing users to configure Link Adaptation parameters at runtime, enabling dynamic modulation and coding scheme adjustments, transmission power control, and handover procedures based on real-time input values such as CINR and RSSI, thereby reducing reliance on pre-defined vendor solutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If vendor-specific link adaptation methods are used, then implementation is simplified, but adaptability to different wireless conditions deteriorates
Solution Approach 1:
The patent implements dynamic link adaptation by allowing the base station to adjust transmission parameters (modulation scheme, coding rate, transmission power) in real-time based on measured link quality indicators. The system transitions from static vendor-specific configurations to dynamic parameter adjustment, enabling the system to adapt to changing wireless conditions while maintaining ease of implementation through standardized interfaces.
Solution Approach 2:
The patent changes operational parameters by enabling configurable adjustment of transmission parameters such as modulation scheme, coding rate, and transmission power. The system allows parameter changes based on link quality measurements, transforming fixed vendor implementations into flexible parameter-adjustable systems that can optimize performance for different wireless conditions.
2Reliability
If generic IEEE 802.16 rules are followed, then standard compliance is improved, but specificity for optimal resource allocation deteriorates
Solution Approach 1:
The patent segments the link adaptation process into distinct components: link quality measurement, parameter selection, and transmission configuration. This segmentation allows the system to maintain compliance with generic IEEE 802.16 rules while implementing specific optimization algorithms tailored to different wireless conditions, thereby improving both standard compliance and resource allocation efficiency.
Solution Approach 2:
The patent applies preliminary action by pre-configuring multiple transmission parameters and modulation schemes before actual transmission occurs. The system prepares candidate parameter sets in advance and selects the optimal one based on measured link quality, enabling efficient real-time resource allocation while maintaining standard compliance through predefined configuration mechanisms.
3Reliability
If multiple transmission parameters are adjusted, then link quality optimization is improved, but system complexity deteriorates
Solution Approach 1:
The patent implements universality by creating a unified link adaptation framework that can manage multiple transmission parameters (modulation scheme, coding rate, power) through a single configurable interface. The base station uses a common measurement and selection mechanism for all parameters, reducing the complexity of managing multiple parameters while maintaining optimization capability across different transmission conditions.
Data Source
AI summary
A method and apparatus for implementing user defined Link Adaptation solutions in a wireless system.