Uplink Beam Prioritization for Full-Duplex Self-Interference Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing concurrent transmission and reception in full-duplex operations due to self-interference, which impairs reception performance and restricts radio resource spectrum efficiency, particularly in dynamic traffic scenarios.
Innovation Solution
The proposed solution involves determining uplink parent and child link priorities and beams based on overlapping time-domain resources to minimize interference, enabling concurrent transmission and reception by prioritizing one link over the other, thereby improving system capacity and supporting dynamic traffic allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex concurrent transmission and reception is implemented, then system throughput and radio resource utilization are improved, but self-interference impairs reception performance
Solution Approach 1:
The patent segments the time-domain resources into different priority levels (first priority and second priority). By dividing the resource allocation into prioritized segments, the system can manage self-interference through time-division multiplexing while maintaining full-duplex capabilities. High-priority transmissions receive dedicated time resources separated from lower-priority receptions, thereby reducing self-interference impact while preserving overall system throughput.
2Reliability
If beam determination is performed for overlapping time-domain resources, then interference is minimized and reception performance is improved, but device complexity increases
Solution Approach 1:
The patent performs beam determination in advance for overlapping time-domain resources before actual transmission and reception occur. By pre-determining the appropriate beams for high-priority and low-priority resources, the system minimizes interference without adding real-time processing complexity. The network node prepares beam configurations ahead of time, ensuring optimal reception performance while avoiding complex runtime beam switching.
3Adaptability or versatility
If priority-based resource allocation is implemented for parent and child links, then dynamic traffic allocation is improved, but signaling overhead increases
Solution Approach 1:
The patent implements a self-service mechanism where the network node autonomously determines priorities for parent and child link time-domain resources based on pre-configured criteria. The system automatically identifies which resources are high-priority and which are low-priority without requiring extensive signaling exchanges. This self-determination approach enables flexible dynamic traffic allocation while minimizing signaling overhead by eliminating the need for constant priority negotiation between nodes.
Data Source
AI summary
Disclosed are techniques related to wireless communication system to enable full duplex communication. A network node is configured to communicate with a parent node and a child node. The network node may include a transceiver, a memory, and a processor communicatively coupled to the transceiver and the memory. The transceiver, memory, and processor may be configured to determine uplink (UL) parent and child link priorities for parent and child time-domain resources that overlap in time at least partially. The transceiver, memory, and processor may also be configured to determine UL parent and child beams based on the UL parent and child link priorities. The transceiver, memory, and processor may further be configured to notify the parent node of the UL parent beam for the parent and child time-domain resources. The transceiver, memory, and processor may yet further be configured to concurrently transmit parent traffic to the parent node using the UL parent beam and receive child traffic from the child node using the UL child beam.