Virtual Component Carriers for Full-Duplex Wireless Communication
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Solution Overview
Problem
Current wireless communication systems face challenges in implementing full-duplex slots without significant implementation complexity, particularly in managing self-interference and interference between downlink and uplink transmissions, which affects network performance.
Innovation Solution
The use of virtual component carriers, which are divided into multiple virtual component carriers sharing a common configuration, allows for full-duplex operation by enabling overlapping virtual component carriers to facilitate communication without substantial changes to the standard, thereby reducing implementation complexity and improving network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If full-duplex slots are implemented in current wireless communication systems, then bandwidth and coverage are enhanced, but self-interference and interference between downlink and uplink transmissions increase
Solution Approach 1:
The component carrier is divided into multiple virtual component carriers (VCCs), each handling specific communication directions (downlink, uplink, or full-duplex). This segmentation allows interference management to be applied selectively to each VCC, reducing overall self-interference while maintaining full-duplex capabilities.
Solution Approach 2:
A slot configuration indicator is introduced as an intermediary mechanism that coordinates the operation of multiple VCCs. This indicator enables the base station and UE to synchronize their understanding of which VCCs are active in each slot, preventing interference through proper resource allocation without requiring complex hardware modifications.
2Productivity
If full-duplex operation is implemented with overlapping component carriers, then network performance is improved, but implementation complexity increases significantly
Solution Approach 1:
The virtual component carrier framework provides a universal mechanism that can handle multiple communication modes (half-duplex, full-duplex, overlapping carriers) through a single standardized approach. The slot configuration indicator universally applies to all VCCs, simplifying implementation across different scenarios without requiring mode-specific complexity.
Solution Approach 2:
The system dynamically changes parameters (which VCCs are active, their frequency locations, and time slot allocations) based on traffic conditions and interference levels. This allows the network to optimize performance by adjusting VCC configurations without changing the fundamental system architecture, reducing implementation complexity.
3Use of energy by moving object
If multiple virtual component carriers are used sharing a common configuration, then bandwidth efficiency is enhanced, but signal processing complexity increases
Solution Approach 1:
Multiple VCCs share a common configuration (resource allocation, modulation schemes, reference signals), allowing the system to achieve high bandwidth efficiency by aggregating multiple carriers while reducing signal processing complexity through unified handling. The common configuration enables batch processing and reuse of processing algorithms across all VCCs.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a slot configuration that indicates a component carrier comprising a plurality of virtual component carriers. The UE may communicate based at least in part on the slot configuration. Numerous other aspects are described.