Concurrent Mini-Slot and Slot Transmission Scheduling
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Solution Overview
Problem
Current wireless communication systems face challenges in concurrently scheduling mini-slot and slot based transmissions to a single mobile device, particularly in 5G NR networks, where services using different transmission types (such as URLLC and eMBB) require urgent scheduling, leading to potential interruptions and delays in slot-based transmissions.
Innovation Solution
The system facilitates concurrent mini-slot and slot based transmissions by scheduling them within the same slot interval, using separate control channels and frequency resource elements, allowing mini-slot transmissions to preempt or coexist with slot transmissions, and processing mini-slot data before slot data in case of a single receiver chain, ensuring minimal disruption to latency-sensitive services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mini-slot transmissions are scheduled concurrently with slot-based transmissions to the same device, then latency-sensitive service transmission efficiency is improved, but slot-based transmission interruptions increase
Solution Approach 1:
The transmission resource is segmented into mini-slots and slots, where mini-slots are shorter transmission units that can be scheduled independently within a slot. This segmentation allows latency-sensitive data to be transmitted in urgent mini-slots without completely blocking the longer slot-based transmissions, thus improving transmission efficiency while maintaining continuity of slot-based services.
Solution Approach 2:
The system dynamically schedules mini-slot transmissions based on real-time latency requirements. When latency-sensitive data arrives, mini-slots are dynamically inserted within the slot structure, allowing the system to adapt transmission resources flexibly. This dynamic scheduling improves responsiveness for urgent data while preserving the overall slot-based transmission framework.
2Adaptability or versatility
If multiple transmission types are scheduled to the same device, then service versatility is improved, but scheduling complexity increases
Solution Approach 1:
The patent introduces a time dimension by creating mini-slots as sub-units within slots. This dimensional transformation allows the system to support multiple transmission types (slot-based and mini-slot-based) simultaneously by allocating resources along the time axis, thereby increasing service versatility without proportionally increasing scheduling complexity.
Solution Approach 2:
Different transmission types are assigned to different local time resources: mini-slots for latency-sensitive services and full slots for bandwidth-intensive services. This local quality differentiation allows the system to optimize resource allocation for each service type independently, supporting diverse services while maintaining manageable scheduling complexity through localized resource management.
Data Source
AI summary
Concurrent mini-slot based and slot based transmissions to a single device are provided herein. A method can comprise transmitting, by a network device comprising a processor, first data via a first control channel indicating a slot based transmission for a device and second data via a second control channel indicating a mini-slot based transmission for the device. A first length of the slot based transmission can comprise a defined number of symbols and a second length of the mini-slot based transmission can comprise some of the defined number of symbols. The method can also comprise transmitting, by the network device, the slot based transmission and the mini-slot based transmission. The slot based transmission and the mini-slot based transmission can be logically separate transmissions that can be scheduled to be concurrent transmissions for the device.