Dual-Carrier Scheduling via Master-Slave Priority Coordination
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Solution Overview
Problem
Current dual-carrier HSPA systems perform suboptimally due to scheduling methods that consider only one frequency band, leading to inefficient user allocation and resource utilization, as the priority of one carrier does not affect the other, limiting the advantages of dual-carrier support.
Innovation Solution
A scheduling method and apparatus that determine user priority per carrier using a scheduling metric value reflecting a user delay weight, allowing for optimal allocation of resources and carrier selection based on delay weights and scheduling metric values, ensuring efficient data transmission and resource management in a dual-carrier wireless communication system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If joint proportion fairness scheduling is used to determine user priority per carrier, then system performance is enhanced compared to single-carrier scheduling, but the priority of one carrier does not affect the other carrier leading to suboptimal resource allocation
Solution Approach 1:
The patent merges the scheduling decisions of multiple carriers by introducing a master carrier whose user priority determination influences slave carriers. This combines the independent carrier scheduling into a coordinated system where the master carrier's scheduling metric serves as a foundation for slave carrier allocations, resolving the issue of isolated carrier decisions while maintaining manageable complexity through hierarchical structure
2Productivity
If users are optimally allocated to dual carrier considering frequency selectivity and multiuser diversity, then load balancing is achieved and performance is enhanced, but current methods consider only one frequency band leading to inefficient allocation
Solution Approach 1:
The patent segments the dual-carrier system into master and slave carriers with distinct roles. The master carrier handles comprehensive user priority determination considering all users and carriers, while slave carriers focus on specific user allocations based on the master's decisions. This segmentation allows optimal allocation across both carriers while simplifying the operational complexity through divided responsibilities
3Device complexity
If transmit data and remaining resources are determined per carrier independently, then carrier-specific scheduling is simple, but the dual carrier advantage is not fully utilized
Solution Approach 1:
The patent introduces a hierarchical dimension to carrier scheduling by establishing master-slave relationships. Instead of purely independent or fully integrated scheduling, the system operates at multiple levels: the master carrier operates at a system-wide level determining overall user priorities, while slave carriers operate at a carrier-specific level allocating resources based on those priorities. This dimensional approach fully utilizes dual-carrier advantages while keeping individual carrier scheduling relatively simple
Data Source
AI summary
A scheduling method and apparatus in a wireless communication system. The scheduling method for a node B in a wireless communication system supporting a plurality of carriers includes determining a delay weight for each of a plurality of user equipment (UEs) according to a preset weight application time point. The method also includes determining a scheduling metric value of each UE per carrier using the delay weight, and determining a priority of each UE per carrier using the scheduling metric value.