Wireless Interference Management via Priority-Based Coloring
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Solution Overview
Problem
Wireless communication networks face interference issues due to shared resource access among multiple network operating entities, leading to increased signaling overhead and communication latency, particularly in 5G networks with diverse deployments and services.
Innovation Solution
A method and apparatus for wireless communication that involve obtaining a priority schedule for transmission opportunities, identifying data for transmission, monitoring medium sensing slots for medium reservation signals, and determining the highest priority signal to transmit data only when it corresponds to the target transmitter, thereby reducing interference through coordinated resource partitioning and dynamic TDD/FDD design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple network operating entities share spectrum resources in dense deployments, then network capacity and coverage are improved, but interference between transmitters increases and communication reliability deteriorates
Solution Approach 1:
The patent segments base stations into different priority groups (first priority base stations and second priority base stations) with dedicated sensing slots. This segmentation allows high-priority transmissions to have dedicated interference-free resources while low-priority transmissions operate in remaining resources, thereby maintaining network capacity while improving communication reliability through protected high-priority channels.
Solution Approach 2:
The patent applies local quality by assigning different priority levels and resource allocation strategies to different base station groups based on their specific needs. First priority base stations receive guaranteed sensing slots and higher protection, while second priority base stations operate with remaining resources. This localized differentiation improves overall system reliability without sacrificing total network capacity.
2Measurement precision
If base stations monitor multiple sensing slots for medium reservation signals, then interference detection accuracy is improved, but signaling overhead and processing complexity increase
Solution Approach 1:
The patent segments sensing slots into priority-specific slots (first sensing slots for first priority base stations, second sensing slots for second priority base stations). Each base station group monitors only its designated sensing slots rather than all slots, which maintains interference detection accuracy for their respective priority levels while reducing processing complexity and signaling overhead compared to universal monitoring.
Solution Approach 2:
First priority base stations monitor only their dedicated first sensing slots rather than all sensing slots in the system. This partial monitoring approach provides sufficient interference detection accuracy for high-priority transmissions while significantly reducing processing complexity and signaling overhead compared to complete monitoring of all slots.
3Loss of time
If priority-based resource allocation is implemented, then communication latency for high-priority traffic is reduced, but system complexity for priority management increases
Solution Approach 1:
The patent implements preliminary action by pre-allocating dedicated first sensing slots to first priority base stations before transmission opportunities arise. This advance reservation of resources ensures that high-priority transmissions can proceed immediately without waiting for contention resolution, thereby reducing communication latency while the pre-established priority structure keeps management complexity manageable.
Solution Approach 2:
The patent changes the time resource allocation parameter by dedicating specific sensing slots to different priority levels. First priority base stations are assigned specific time slots for sensing, which reduces their access latency compared to contention-based approaches. The parameter change from equal access to priority-based time allocation reduces latency for critical traffic while maintaining reasonable system complexity through structured assignment.
Data Source
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AI summary
Interference management with a coloring concept is discussed. A target transmitter may obtain a first priority schedule for a transmission opportunity of the target transmitter, wherein the first priority schedule identifies transmission priority for a plurality of base station groups. Each of the base station groups may include one or more base stations that are grouped according to various transmission criteria. The target transmitter will identify data for transmission and monitor the medium sensing slots corresponding to each of the base station groups for a medium reservation signal. The highest priority medium reservation signal may be determined out of any medium reservation signals detected during the monitoring. The highest priority medium reservation signal is determined according to the first priority schedule. Once identified, the data is transmitted by the target transmitter when the highest priority medium reservation signal corresponds to the target transmitter.