Preemption Indication Signaling for 5G Wireless Networks
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Solution Overview
Problem
Current preemption indication schemes in 5G wireless communication networks face challenges with low accuracy and inflexibility in signaling latency due to limited message size, which affects dynamic resource sharing and ultra-reliable low latency communications.
Innovation Solution
A preemption indication method using a two-step pointer system that identifies the time-frequency region and sub-region affected by preemption, allowing for more accurate and efficient signaling with a reduced message size, supporting a wide range of signaling delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a preemption indication scheme with detailed time-frequency region identification is used, then accuracy of preemption indication is improved, but message size increases
Solution Approach 1:
The time-frequency region is segmented into multiple sub-regions, and only the affected sub-region is indicated using a sub-region identifier. This segmentation allows the system to provide detailed preemption information without transmitting data for the entire time-frequency region, thus improving accuracy while keeping message size manageable.
Solution Approach 2:
Instead of providing uniform detailed information across the entire time-frequency region, the system applies local quality by identifying and indicating only the specific sub-region that is affected by preemption. This localized approach ensures high accuracy for the affected area while minimizing the overall message size.
2Adaptability or versatility
If a fixed signaling latency is used, then system simplicity is maintained, but flexibility in adapting to different latency requirements is reduced
Solution Approach 1:
The system dynamically adapts the signaling latency based on the specific preemption scenario and requirements. By allowing variable latency rather than fixing it, the system can optimize performance for different traffic types and channel conditions, achieving flexibility while managing complexity through standardized procedures.
Solution Approach 2:
The system changes the latency parameter according to different operational requirements. By making latency a variable parameter rather than a fixed value, the system can adjust to different service requirements (e.g., ultra-reliable low-latency communications versus other traffic types) without requiring a completely different system architecture.
3Reliability
If comprehensive preemption information is transmitted, then reliability of resource allocation is improved, but energy consumption increases
Solution Approach 1:
The system extracts and transmits only the essential preemption information - specifically the sub-region identifier of the affected area - rather than transmitting comprehensive information about the entire time-frequency region. This extraction approach maintains reliability for the affected resources while significantly reducing energy consumption compared to transmitting full detailed information.
Data Source
AI summary
Preempting a slot with a mini-slot for use in a wireless transmitter of a wireless communication network is presented. The method includes preempting a slot transmission to a wireless receiver with a mini-slot transmission to the wireless receiver, wherein the slot transmission comprises a plurality of time-frequency regions (TFRs), each TFR comprising a plurality of sub-regions. The method further includes transmitting a preemption indication to the wireless receiver, where the preemption indication includes: a TFR position in time of one or more preempted TFRs in the slot transmission, a TFR position in frequency of the one or more preempted TFRs in the slot transmission and an identifier of one or more of the plurality of a sub-regions of the one or more preempted TFRs.