Wireless Resource Scheduling with Dynamic Frame Structure
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Solution Overview
Problem
Current wireless communication systems, such as WiFi and Femto technology, face inefficiencies due to contention-based random multiple access mechanisms, leading to resource wastage and poor throughput, especially with increasing numbers of terminals and varying data service demands.
Innovation Solution
A resource scheduling method that dynamically allocates wireless resources based on transmission demand, with a flexible frame structure and variable frame length, allowing for better adaptation to diverse data services and channel conditions, reducing resource wastage and improving system efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a contention-based random multiple access mechanism (CSMA/CA) is used, then the system is flexible and independent of centralized control, but resource utilization efficiency deteriorates due to collisions and random retreat
Solution Approach 1:
The patent introduces a centralized controller as an intermediary that coordinates resource allocation among access points and terminals. This controller acts as a mediator that resolves the conflict between distributed flexibility and centralized efficiency by managing resource assignment centrally while allowing flexible access policies, thereby improving resource utilization without completely sacrificing system adaptability.
Solution Approach 2:
The patent implements dynamic resource allocation where the centralized controller continuously adjusts resource assignment based on real-time channel conditions, traffic demands, and system state. This dynamic approach allows the system to adapt to changing conditions while maintaining high resource utilization efficiency, resolving the contradiction between static flexibility and dynamic efficiency.
2Device complexity
If fixed frame structure and fixed scheduling cycle are used, then system complexity is reduced, but adaptability to varying service demands deteriorates
Solution Approach 1:
The patent implements a dynamic frame structure where the scheduling cycle and frame length can be adjusted based on service demands and channel conditions. The system can switch between different frame structures and scheduling intervals, allowing it to adapt to varying traffic patterns while maintaining manageable complexity through standardized adjustment mechanisms.
Solution Approach 2:
The patent changes key parameters such as frame length, scheduling cycle, and resource allocation granularity based on service requirements. By dynamically adjusting these parameters rather than fixing them, the system achieves high adaptability to different service types (e.g., voice, data, video) while keeping the underlying system structure relatively simple and manageable.
3Ease of manufacture
If static resource allocation is used, then implementation is simple, but resource wastage increases due to mismatch with actual transmission demand
Solution Approach 1:
The patent implements feedback mechanisms where the centralized controller continuously monitors actual transmission demand, channel conditions, and resource utilization. Based on this feedback, the controller dynamically adjusts resource allocation to match actual needs, thereby eliminating resource wastage while maintaining implementation simplicity through automated feedback-driven adjustment rather than complex manual configuration.
Solution Approach 2:
The system enables self-service resource allocation where the centralized controller automatically adjusts resource distribution based on monitored demand without external intervention. This self-adjusting mechanism eliminates resource wastage by allocating resources according to actual needs while keeping implementation simple through automated decision-making algorithms.
Data Source
AI summary
Provided are a resource scheduling method and device; the method comprises: scheduling resource according to the transmission demands; and configuring a frame structure with a non-fixed frame length matching the scheduled resource. The method according to the present invention prevents wastage of wireless resources caused by competition conflict or random back-off, and can better adapt to the demands of different kinds of data services with varied features in the future.