Flexible Time Unit Configuration for Wireless HARQ Feedback
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Solution Overview
Problem
Current wireless communication technologies, such as New Radio (NR), face inefficiencies in uplink HARQ feedback due to fixed time units, which waste bit overhead for services with varying delay and reliability requirements, such as eMBB, URLLC, and mMTC, leading to suboptimal performance in supporting multiple service types.
Innovation Solution
Configuring flexible time units for user equipment (UE) by a base station, allowing for dynamic scheduling of user data and uplink feedback of downlink data according to configured time unit information, which includes mode and offset information, to optimize bit overhead and meet specific service requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed slot-based time units are used for HARQ feedback, then system simplicity and standardization are maintained, but bit overhead increases and service adaptability deteriorates for different QoS requirements
Solution Approach 1:
The patent applies dynamics by transitioning from fixed slot-based time units to flexible symbol-based time units for HARQ feedback. The base station can dynamically configure the time unit granularity (e.g., 1, 2, 4, or 8 symbols) according to different service requirements, allowing the system to adapt between URLLC (shorter time units) and eMBB/mMTC (longer time units) scenarios, thereby reducing bit overhead while maintaining service adaptability
Solution Approach 2:
The patent changes the parameter of time unit granularity from fixed (slot-based) to variable (symbol-based). By introducing configurable parameters such as the number of symbols per time unit and the start position offset, the system can adjust the time unit duration to match different service latency and reliability requirements, optimizing bit overhead for each service type
2Productivity
If slot-based time units are used for all services, then implementation simplicity is maintained, but transmission efficiency deteriorates for services with shorter duration requirements
Solution Approach 1:
The patent segments the slot-based time unit into smaller symbol-based time units. By dividing a slot (14 symbols) into configurable smaller units (1, 2, 4, or 8 symbols), the system can allocate appropriate time unit sizes to different services, improving transmission efficiency for short-duration services like URLLC while managing scheduling complexity through standardized segmentation options
3Reliability
If uniform time unit configuration is used across all services, then system complexity is reduced, but performance optimization deteriorates for services with different delay and reliability requirements
Solution Approach 1:
The patent applies local quality by configuring different time unit parameters for different services or service types. Instead of using a uniform time unit configuration across all services, the base station can assign shorter time units (e.g., 1-2 symbols) to URLLC services requiring low latency and high reliability, while using longer time units for eMBB or mMTC services with different QoS requirements, thereby optimizing QoS satisfaction for each service locally
Data Source
AI summary
The present disclosure provides an information scheduling method and apparatus, an information transceiving method and apparatus, a base station, user equipment, and computer-readable storage mediums. The information scheduling method includes: configuring time unit information for user equipment (UE), where the time unit information indicates one or more time units; scheduling at least one of user data or uplink feedback of downlink data according to the configured time unit information.