Full-Duplex Beam Conflict Resolution via Pre-Configured Compatibility Rules
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Solution Overview
Problem
Wireless communication systems face challenges in reliably scheduling uplink and downlink signals simultaneously due to interference, especially when full-duplex capable devices experience incompatible signal beams, leading to unreliable reception and inefficient resource utilization.
Innovation Solution
Implementing conflict resolution mechanisms where base stations and user equipment independently or collaboratively perform actions such as dropping overlapping signals or changing beam configurations based on predefined rules to ensure compatible beam pairs for simultaneous transmission and reception, allowing for reliable full-duplex communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex communication is implemented to enable simultaneous uplink and downlink transmissions, then resource utilization efficiency is improved, but interference between incompatible signal beams occurs leading to unreliable reception
Solution Approach 1:
The system performs preliminary actions by pre-configuring beam pairs and establishing compatibility relationships between uplink and downlink beams before actual communication occurs. The network device pre-determines which beam pairs are compatible and stores this information for quick reference during resource allocation, avoiding the need to resolve conflicts during real-time transmission.
Solution Approach 2:
The system implements feedback mechanisms where the network device monitors beam compatibility and reception quality, then adjusts beam pair configurations accordingly. When interference is detected between uplink and downlink signals, the system provides feedback to modify beam directions or select alternative compatible beam pairs, ensuring reliable full-duplex operation.
2Loss of time
If uplink and downlink signals are scheduled at overlapping times to improve spectrum efficiency, then latency is reduced, but signal interference occurs causing unreliable communication
Solution Approach 1:
The system applies local quality by assigning different spatial characteristics (beam directions) to uplink and downlink signals even when they occupy the same time-frequency resources. By ensuring that uplink and downlink beams are spatially separated or compatible, the system allows overlapping transmissions without interference, reducing latency while maintaining reliability.
Solution Approach 2:
The system transitions from traditional time-division or frequency-division multiplexing to spatial dimension utilization through beamforming. By adding the spatial dimension as a new resource dimension, the system can simultaneously support uplink and downlink transmissions in the same time-frequency resources as long as their beam directions are compatible, thereby reducing latency without causing interference.
3Reliability
If beam configurations are changed to resolve signal conflicts, then full-duplex communication reliability is improved, but device complexity increases
Solution Approach 1:
The system implements self-service by enabling user equipment to autonomously determine beam compatibility based on pre-configured information from the network. The UE can independently identify compatible beam pairs and adjust its beam configurations without requiring complex centralized coordination for every beam change, thereby reducing overall system complexity while maintaining reliability.
Solution Approach 2:
The network device performs preliminary actions by pre-configuring and signaling beam compatibility information to user equipment before communication begins. This advance preparation allows UEs to quickly determine appropriate beam configurations without complex real-time calculations, reducing device complexity while ensuring reliable full-duplex operation.
Data Source
AI summary
Wireless communications systems and methods related to resolving conflicts between full-duplex signals are provided. A base station may schedule resources for a UE or plurality of UEs. The scheduled resources may include simultaneous uplink and downlink resources. The scheduled resources may utilize beams which if used would cause excessive interference. As such, a conflict resolution action may be performed by the BS and UE to mitigate any problems arising from using both incompatible beams simultaneously. Conflict resolution actions may include dropping one of the signals. Conflict resolution actions may include and changing one or both beam configurations for the signals. Conflict resolution actions may be based on predetermined rules or may be based on an indication from the base station.