Wireless Resource Mismatch Recovery via Adaptive Feedback
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Solution Overview
Problem
Wireless communication systems face performance deterioration due to interference between multiple terminals sharing resources, leading to a decrease in quality of service (QoS) due to channel conditions and receiver imperfections, necessitating effective techniques to mitigate interference and adjust resource allocations.
Innovation Solution
A method and apparatus for recovering from resource mismatches in wireless communication systems, involving the computation of projected resource levels, detection of mismatches, and adaptive responses to adjust resource assignments, including re-scheduling and re-assigning communication resources to mitigate interference and maintain QoS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple terminals share system resources simultaneously, then system capacity and communication support are improved, but interference between terminals increases and quality of service deteriorates
Solution Approach 1:
The patent implements dynamic resource allocation where the network entity continuously monitors resource usage and interference levels, adjusting resource assignments in real-time. The system transitions from static to dynamic scheduling, allowing resource levels to adapt to changing channel conditions and interference patterns, thereby maintaining high system capacity while controlling interference through ongoing optimization
Solution Approach 2:
The patent establishes a feedback mechanism where terminals report resource mismatch conditions and interference levels back to the network entity. This feedback loop enables the network to detect when allocated resources do not match actual channel conditions and to adjust subsequent resource assignments accordingly, resolving the contradiction between maintaining high capacity and controlling interference through continuous adaptation
2Reliability
If resource assignments are increased to maintain quality of service, then service reliability is improved, but resource mismatch and interference increase
Solution Approach 1:
The patent employs preliminary resource projection where the network entity calculates expected resource requirements based on channel conditions before making actual assignments. By projecting resource needs in advance and comparing them with assigned resources, the system can proactively adjust allocations to prevent mismatches, ensuring QoS reliability while avoiding excessive resource allocation that would cause interference
Solution Approach 2:
The patent dynamically changes resource parameters such as power levels, bandwidth allocations, and modulation schemes based on actual channel conditions. When resource mismatches are detected, the system adjusts these parameters to optimize the balance between maintaining QoS reliability and minimizing interference, rather than using fixed resource assignments
Data Source
AI summary
System(s) and method(s) that facilitate assignment mismatch recovery are provided. A projected level of resources required to satisfy one or more communication constraints (e.g., inter-cell and intra-cell interference) is generated. The projected resources are contrasted with scheduled resources and a determination is made as to whether a mismatch between assigned and projected resources exists. A mismatch is recovered through an adaptive response that feeds back magnitudes for the communication resources which are compatible with the communication constraints.