Dynamic Uplink Short Burst Positioning in 5G NR
Solution Overview
Problem
Current wireless communication networks, particularly in 5G NR technology, face challenges in providing flexible positioning of uplink short bursts, which can lead to interference issues due to fixed slot positions and limited flexibility in data transmission.
Innovation Solution
The flexible positioning of uplink short bursts within uplink centric slots, allowing them to be placed at any position, including the beginning, middle, or end, with explicit or implicit indicators from the base station, such as through a physical downlink control channel (PDCCH) grant, enabling dynamic assignment and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If uplink short burst is positioned at fixed slot positions, then slot structure is simplified, but flexibility for data transmissions is reduced
Solution Approach 1:
The patent implements dynamic positioning of uplink short bursts within slots by introducing a slot position indicator field in downlink control information. This allows the network to dynamically adjust the position of uplink short bursts based on traffic conditions and interference scenarios, transforming the fixed slot structure into a flexible, adaptive structure that can optimize transmission performance for different service types and channel conditions
2Reliability
If uplink short burst uses fixed position, then scheduling is simpler, but interference management capability is limited
Solution Approach 1:
The patent changes the parameter of uplink short burst position from fixed to variable by introducing a slot position indicator that can take different values. This enables the system to adapt to different interference scenarios by selecting appropriate positions, improving reliability through dynamic interference avoidance while the indicator mechanism keeps scheduling manageable
3Productivity
If uplink short burst position is dynamically assigned, then transmission efficiency improves, but control signaling overhead increases
Solution Approach 1:
The patent achieves dynamic position assignment with minimal overhead by repurposing existing downlink control information structures. The slot position indicator is integrated into the existing PDCCH/PDSCH allocation mechanisms, allowing the same control channel infrastructure to serve both traditional scheduling functions and the new dynamic position indication function, thereby avoiding significant increases in signaling overhead
Data Source
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Figure 3A~3B
AI summary
Various aspects of the present disclosure provides methods and techniques for flexible positioning of a uplink short burst in NR communications. In one example, the uplink short burst may have a slot position that at any position of the uplink centric slot. For instance, a downlink centric slot may contain control signals from a base station, such as a grant, that indicate the slot position of the uplink short burst. The grant may indicate, explicitly or implicitly, the position within an uplink centric slot that should be assigned to an uplink short burst. The UE may then transmit a response including an uplink short burst within the indicated slot position of an uplink centric slot. The various aspects may thus enable the dynamic assignment of uplink short bursts within uplink centric slots.