Data Scheduling for Multi-Carrier Terminals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless cellular communications, the limited spectrum utilization rate hinders the provision of high-speed data services, and existing scheduling methods fail to achieve optimal performance and fairness for multi-carrier terminals compared to non-multi-carrier terminals, especially when channel quality and bandwidth vary across component carriers.
Innovation Solution
A data scheduling method that calculates instantaneous and average scheduling rates for multi-carrier terminals, determines scheduling priorities based on these rates, and allocates physical resources according to descending priority orders, while considering the type of component carriers and resource utilization rates to ensure fair competition between multi-carrier and non-multi-carrier terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation technology is used to increase spectrum utilization rate, then peak data rate and system scheduling rate are improved, but fairness between multi-carrier terminals and non-multi-carrier terminals deteriorates
Solution Approach 1:
The patent segments the scheduling process into separate handling for multi-carrier terminals and non-multi-carrier terminals. Different scheduling algorithms are applied: proportional fair scheduling for non-multi-carrier terminals and throughput-maximizing scheduling for multi-carrier terminals, ensuring each group receives fair treatment according to its characteristics
Solution Approach 2:
The patent applies different scheduling strategies to different terminal types based on their specific characteristics. Multi-carrier terminals receive optimized resource allocation on secondary component carriers to maximize throughput, while non-multi-carrier terminals receive standard proportional fair scheduling, creating locally optimized quality for each terminal category
2Productivity
If multiple component carriers are allocated to multi-carrier terminals, then resource utilization for high-speed data services is improved, but resource allocation complexity increases
Solution Approach 1:
The patent divides component carriers into primary component carriers and secondary component carriers, with different scheduling approaches for each. Primary carriers use standard proportional fair scheduling while secondary carriers use optimized throughput-maximizing scheduling, reducing overall system complexity through segmentation
Solution Approach 2:
The patent dynamically adjusts the scheduling strategy based on terminal type identification. The base station determines whether a terminal is multi-carrier or non-multi-carrier and automatically applies the appropriate scheduling algorithm, making the system adaptive and manageable despite the complexity of multiple carriers
Data Source
AI summary
Embodiments of the present invention disclose a data scheduling method and a data scheduling device, which is configured to: receive channel quality information sent by a first terminal; calculate a current instantaneous scheduling rate of the first terminal on a first component carrier by using the channel quality information; acquire an average scheduling rate of the first terminal on the first component carrier; calculate a scheduling priority of the first terminal on the first component carrier by using the instantaneous scheduling rate and the average scheduling rate; and allocate a physical resource of the first component carrier to the first terminal. In this way, a multi-carrier terminal is enabled to obtain a stable high rate, differentiation between terminals is achieved.