Radio Resource Allocation Using HARQ-Based Time Division
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Solution Overview
Problem
In next-generation wireless communication systems, multiple sites using the same frequency band face resource allocation challenges, leading to potential collisions due to independent scheduling, particularly in heterogeneous cell aggregation scenarios where control information transmission delays occur.
Innovation Solution
A method and apparatus for allocating radio resources among multiple sites using a resource allocation unit based on the HARQ period of each site, employing Time Division Multiplexing (TDM) to separate resource allocation in the time domain, ensuring that resources are allocated without significantly altering the predefined HARQ timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple sites use the same frequency band with independent scheduling, then resource utilization efficiency is improved, but resource collision occurs between sites
Solution Approach 1:
The patent segments the time domain into distinct resource allocation units for different sites. Each site is assigned specific time slots within a resource allocation unit based on its HARQ period, ensuring that multiple sites using the same frequency band do not collide in resource allocation while maintaining independent scheduling capabilities.
Solution Approach 2:
The patent implements periodic resource allocation based on HARQ periods. Resource allocation units are configured with periodicity matching the HARQ period of each site, creating a rhythmic pattern of resource assignment that prevents collision while allowing each site to maintain its scheduling independence and achieve high resource utilization.
2Adaptability or versatility
If resource allocation is performed separately for each site, then scheduling flexibility is improved, but control information transmission delay increases
Solution Approach 1:
The patent merges the scheduling operations of multiple sites into a unified resource allocation unit framework. By coordinating resource allocation across sites within a common time structure defined by HARQ periods, the system maintains scheduling flexibility for each site while reducing delays through synchronized resource management and avoided collisions.
3Manufacturing precision
If resource allocation units are configured based on HARQ period, then resource allocation accuracy is improved, but system complexity increases
Solution Approach 1:
The patent changes the key parameter for resource allocation from generic time slots to HARQ-period-based resource allocation units. This parameter change enables precise resource allocation aligned with the natural retransmission cycles of each site, improving allocation accuracy while the modular nature of HARQ-period-based configuration keeps system complexity manageable through standardized timing structures.
Data Source
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AI summary
Provided are a method and an apparatus for allocating radio resources to multiple sites which use the same frequency band. The method comprises: determining a resource allocation unit being used in common in the multiple sites; and allocating resources to the multiple sites on the basis of the resource allocation unit, wherein with respect to the resource allocation unit, radio resources allocated to the respective multiple sites are divided and arranged in a time domain.