Full-Duplex Beamforming Resource Allocation for Interference Management
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Solution Overview
Problem
Full-duplex wireless communication systems face significant interference challenges due to inter-user-interference (IUI) and self-interference (SI) when multiple user equipment (UEs) share the same wireless resource, particularly in 5G communication systems operating at higher frequencies, which limits propagation range and increases interference.
Innovation Solution
The proposed solution involves configuring UEs as combinations of transmission (Tx) and reception (Rx) units based on beamforming indexes to allocate shared wireless resources efficiently, allowing Tx and Rx antenna beams to share the same resource while minimizing interference through interference management techniques, such as determining optimal UE combinations and beam patterns based on reference information and interference metrics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple UEs share the same wireless resource in full-duplex system, then resource utilization efficiency is improved, but inter-user-interference (IUI) and self-interference (SI) increase
Solution Approach 1:
The system segments the wireless resource sharing problem by dividing UEs into different groups based on their beamforming characteristics and spatial separation. By configuring specific Tx and Rx UE combinations that are spatially separated, the system allows resource sharing while minimizing interference between different UE groups.
Solution Approach 2:
The patent applies local quality by configuring beamforming parameters specifically for each UE combination based on their individual spatial characteristics. Each Tx UE and Rx UE pair is optimized with specific beamforming indexes that concentrate energy in desired directions while suppressing interference in other directions, creating locally optimized interference patterns.
2Length of stationary object
If beamforming is used to concentrate signal in specific direction, then propagation range is increased, but interference to other directions is reduced which limits resource sharing
Solution Approach 1:
The system achieves universality by designing a resource allocation mechanism that can simultaneously support multiple Tx UE and Rx UE combinations using the same wireless resource. The beamforming configuration is made multi-functional by enabling different UE pairs to share resources in full-duplex mode while maintaining focused signal transmission for each pair through their specific beamforming indexes.
3Productivity
If Tx UE and Rx UE are configured to share wireless resource, then system capacity is improved, but determining optimal combinations becomes complex
Solution Approach 1:
The system applies preliminary action by pre-configuring beamforming indexes for each UE before resource allocation. The base station determines optimal Tx and Rx UE combinations based on previously acquired channel state information and spatial characteristics, then configures appropriate beamforming parameters in advance. This preliminary configuration simplifies the real-time resource allocation process by reducing the search space for optimal combinations.
Data Source
AI summary
The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as a long term evolution (LTE). A method for performing a beamforming operation in a wireless communication system supporting a full-duplex scheme includes acquiring reference information for allocating a resource, determining a user equipment (UE) combination of a transmission (Tx) UE and a reception (Rx) UE which is capable of sharing a resource from combinations of at least Tx UE and at least one Rx UE, based on the acquired reference information, and allocating a Tx antenna beam for the Tx UE of the UE combination and an Rx antenna beam for the Rx UE of the UE combination.