Intra-User QoS Uplink Scheduling for WiMAX Subscriber Stations
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Solution Overview
Problem
Current wireless communication networks face challenges in efficiently managing uplink bandwidth and prioritizing quality of service (QoS) for multiple active connections in WiMAX networks, leading to suboptimal transmission scheduling and resource allocation.
Innovation Solution
A method and apparatus for intra-user QoS uplink scheduling at a subscriber station, which determines scheduling types and corresponding QoS parameters to prioritize and schedule active uplink connections based on their specific requirements, using a processor to calculate scheduling metrics and allocate bandwidth effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple active uplink connections are managed without prioritization, then all connections can transmit data, but quality of service and transmission efficiency deteriorate
Solution Approach 1:
The patent segments uplink connections into different scheduling types (first scheduling type with first QoS parameters, second scheduling type with second QoS parameters) based on service requirements. This segmentation allows differentiated QoS handling where high-priority connections receive preferential treatment in bandwidth allocation, thereby improving overall service reliability without requiring complete reconfiguration of the scheduling system
Solution Approach 2:
The patent applies local quality by assigning different QoS parameter sets to different scheduling types locally. Each scheduling type has its own customized QoS parameters (such as bandwidth allocation, priority levels, transmission timing) tailored to specific service requirements. This localized quality differentiation enables precise control over individual connection characteristics while maintaining overall system manageability
2Productivity
If uplink bandwidth is allocated without QoS consideration, then bandwidth utilization increases, but transmission performance and service quality deteriorate
Solution Approach 1:
The patent implements dynamic bandwidth allocation where the amount of uplink bandwidth assigned to each connection varies based on its scheduling type and current QoS requirements. High-priority connections dynamically receive larger bandwidth portions when needed, while lower-priority connections receive adjusted allocations. This dynamic approach maintains high overall bandwidth utilization while ensuring transmission performance through adaptive resource distribution
Solution Approach 2:
The patent changes key transmission parameters (bandwidth allocation, priority levels, transmission timing) based on QoS requirements of different scheduling types. By adjusting these parameters dynamically according to service needs, the system achieves both high bandwidth utilization and maintained transmission performance, avoiding the trade-off between efficiency and quality
3Ease of operation
If all uplink connections are scheduled with equal priority, then scheduling simplicity is maintained, but service differentiation and QoS optimization deteriorate
Solution Approach 1:
The patent creates a universal scheduling framework that handles multiple scheduling types and QoS requirements through a unified process. The base station uses a single scheduling mechanism that automatically recognizes connection types and applies appropriate QoS parameters, eliminating the need for separate scheduling systems for different services. This universal approach maintains operational simplicity while achieving comprehensive service differentiation
Solution Approach 2:
The patent applies preliminary action by pre-configuring QoS parameter sets for different scheduling types before actual data transmission begins. Connection priorities, bandwidth allocations, and transmission parameters are predetermined based on service requirements, allowing the scheduling system to operate simply by referencing these pre-established configurations rather than making complex real-time decisions, thus maintaining ease of operation while enabling service differentiation
Data Source
AI summary
A method for intra-user quality of service (QoS) uplink scheduling may include determining scheduling types associated with active uplink connections that are maintained by the subscriber station. The method may also include determining QoS parameters corresponding to the different scheduling types. The method may also include scheduling the active uplink connections for uplink transmissions based on the different scheduling types and their corresponding QoS parameters.