Dynamic Slot Format Indication for 5G NR Efficiency
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Solution Overview
Problem
In the 5G New Radio (NR) system, terminal devices struggle to determine the slot format in time due to limited transmission time, leading to reduced data transmission efficiency, especially when network devices use semi-static configuration and dynamic indication methods like Group Common PDCCH are not timely.
Innovation Solution
A method where a network device sends an indication signal to a terminal device upon obtaining a downlink transmission opportunity, allowing the terminal device to dynamically determine the slot format, thereby improving data transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If semi-static configuration is used for slot format, then device complexity is reduced, but adaptability deteriorates
Solution Approach 1:
The patent applies dynamics by transitioning from semi-static to dynamic slot format indication. The network device dynamically determines and indicates slot formats based on real-time downlink transmission opportunities, allowing the system to adapt to changing channel conditions and traffic demands while maintaining manageable complexity through automated procedures.
Solution Approach 2:
The patent changes the temporal parameter of slot format configuration from semi-static to dynamic. By introducing dynamic indication mechanisms that update slot formats based on current transmission opportunities, the system achieves better adaptability without significantly increasing device complexity through standardized procedures.
2Adaptability or versatility
If dynamic indication is used for slot format, then adaptability is improved, but transmission time increases
Solution Approach 1:
The patent applies preliminary action by having the network device determine the slot format in advance based on the downlink transmission opportunity before actual data transmission occurs. This allows the terminal device to prepare accordingly, reducing the time loss associated with dynamic determination during the transmission process itself.
Solution Approach 2:
The patent rushes through the slot format determination process by having the network device make the determination based on pre-established criteria and transmission opportunities, rather than requiring extended negotiation or measurement periods. This minimizes the time overhead while achieving dynamic adaptability.
3Loss of time
If slot format determination is delayed, then transmission time is reduced, but data transmission efficiency deteriorates
Solution Approach 1:
The patent implements feedback mechanisms where the network device monitors downlink transmission opportunities and provides slot format indications to terminal devices. This feedback loop enables rapid determination of slot formats based on real-time channel conditions, improving both determination speed and data transmission efficiency through coordinated actions.
Solution Approach 2:
The patent applies self-service by enabling terminal devices to autonomously determine slot formats based on received indications and pre-configured parameters, without requiring extended network coordination. This self-determination capability reduces overall determination time while maintaining high transmission efficiency through localized decision-making.
Data Source
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AI summary
A method for determining a slot-format, comprising: a terminal device receiving an indication signal, the indication signal having a first correspondence with a downlink transmission opportunity; and the terminal device determining a slot-format on the basis of the indication signal. Further disclosed are another method for determining a slot-format, a terminal device, a network device and a storage medium.