Virtual Cell Formation for Radio Resource Optimization
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Solution Overview
Problem
Communication systems in multi-cell environments face inefficiencies in radio resource utilization and frequent handovers due to constraints in existing inter-cell cooperation technologies, such as CoMP schemes and DAS/RRH implementations, which limit performance enhancement beyond that of a single base station.
Innovation Solution
A central unit that merges or separates radio access units based on terminal distribution, channel status, and traffic load to create virtual cells, utilizing processing modules across RRC, MAC, and PHY layers, and an inter-cell interference coordinator to manage QoS and interference, thereby optimizing radio resource utilization and reducing handover frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cells of radio access units are merged to form virtual cells, then radio resource utilization efficiency is improved, but device complexity increases
Solution Approach 1:
The patent merges cells of multiple radio access units to form virtual cells, allowing terminals to access multiple radio access units simultaneously. This combining of previously separate cells improves radio resource utilization efficiency by enabling better load balancing and interference coordination across the network.
Solution Approach 2:
The patent segments the control and processing functions by introducing a central unit that manages the virtual cell formation and coordination, while radio access units focus on radio signal processing. This segmentation allows the complexity of virtual cell management to be centralized, reducing the operational complexity at individual radio access units.
2Reliability
If inter-cell cooperation technologies are implemented, then system performance is enhanced, but handover frequency increases
Solution Approach 1:
The patent dynamically adjusts cell configurations by merging or separating cells of radio access units based on terminal distribution, channel status, and traffic load. This dynamic adaptation allows the system to optimize performance for current conditions while maintaining stable virtual cell boundaries, thereby reducing unnecessary handovers.
Solution Approach 2:
The patent creates virtual cells that can serve multiple functions simultaneously: improving system performance through inter-cell cooperation, reducing handover frequency by providing seamless coverage, and enabling flexible resource allocation. The virtual cell structure acts as a universal framework that addresses multiple objectives at once.
3Object-affected harmful factors
If virtual cells are created by merging radio access units, then interference coordination is improved, but device complexity increases
Solution Approach 1:
The patent introduces a central unit as an intermediary that manages virtual cell formation, terminal distribution tracking, and interference coordination. This central coordinator handles the complex tasks of merging and separating radio access unit cells, thereby improving interference coordination while keeping the complexity centralized rather than distributed across multiple radio access units.
Data Source
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AI summary
A communication system with an improvded network access structure for inter-cell cooperation is provided. The communication system includes a central unit and at least one radio access unit. The at least one radio access unit may form at least one virtual cell by merging or separating cells of radio access units according to a distribution of terminals, statuses of channels, an amount of traffic, and the like.