Wireless Resource Scheduling with Flexible 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 in scenarios with 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 adaptive allocation of uplink and downlink resources to match service requirements.
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 retreats
Solution Approach 1:
The patent applies dynamics by making the frame structure flexible and configurable. The frame can be dynamically adjusted in length and composition based on transmission demands, allowing the system to adapt between centralized scheduling and distributed access modes as needed, thus resolving the contradiction between flexibility and efficiency
Solution Approach 2:
The patent changes key parameters such as frame length, frame structure, and resource allocation patterns based on channel conditions and traffic demands. By dynamically adjusting these parameters, the system can switch between contention-based and scheduling-based operations, maintaining flexibility while improving resource utilization
2Ease of manufacture
If a fixed frame structure is used, then the system is simple to implement, but it cannot adapt to varying data service demands and dynamic channel conditions
Solution Approach 1:
The patent introduces dynamic frame structures that can be configured based on transmission demands. The frame length, subframe composition, and resource allocation can be adjusted in real-time to match varying service requirements, maintaining implementation simplicity through standardized procedures while achieving high adaptability
Solution Approach 2:
The patent segments the frame structure into configurable subframes and resource units that can be independently adjusted. This segmentation allows the system to maintain a simple base structure while enabling flexible customization through modular components, resolving the contradiction between simplicity and adaptability
3Productivity
If centralized resource scheduling is implemented, then resource utilization efficiency improves, but system complexity increases due to control overhead
Solution Approach 1:
The patent applies partial action by implementing centralized scheduling only when and where it is beneficial. The system can selectively enable scheduling for specific users, time periods, or resource types while maintaining distributed access elsewhere, thus improving resource utilization without proportionally increasing overall system complexity
Solution Approach 2:
The patent creates a universal control mechanism that can operate in multiple modes (centralized scheduling, distributed access, hybrid modes) depending on conditions. This multi-functional approach allows the same system infrastructure to provide efficient resource allocation when needed while avoiding unnecessary complexity in other scenarios
4Reliability
If random retreat mechanisms are used to avoid collisions, then collision avoidance is achieved, but wireless resource waste increases due to idle channels
Solution Approach 1:
The patent implements feedback mechanisms where the system continuously monitors channel conditions, transmission success rates, and resource utilization. Based on this feedback, the system dynamically adjusts frame structures, resource allocations, and access patterns to avoid collisions while maximizing resource utilization, eliminating the need for conservative random retreats
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.