Network Node Time Interval Determination via Terminal Capabilities
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Solution Overview
Problem
The existing HARQ mechanism in LTE systems has inflexible and inaccurate time relationships between downlink scheduling, downlink data transmission, feedback messages, and uplink scheduling due to fixed configuration by the base station.
Innovation Solution
A method where a network node determines time intervals based on information sent by a terminal device, including subcarrier spacing, operating band, and bandwidth, allowing for flexible and accurate configuration of time relationships.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If time relationships are fixedly configured by the base station, then the configuration is simple and easy to implement, but the flexibility and accuracy of time information determination deteriorate
Solution Approach 1:
Instead of the base station determining time relationships unilaterally, the invention inverts the determination process by using terminal device information (subcarrier spacing, operating band, bandwidth) to determine the time relationships. This inversion allows the system to adapt to terminal-specific characteristics while maintaining systematic control.
Solution Approach 2:
The invention changes the parameters used for time relationship determination from fixed base station configurations to dynamic parameters based on terminal device capabilities (subcarrier spacing, operating band, bandwidth). This parameter change enables flexible adaptation to different terminal configurations and network conditions.
2Device complexity
If time relationships are fixedly configured by the base station, then the system complexity is reduced, but the accuracy of time information determination deteriorates
Solution Approach 1:
The invention introduces terminal-specific parameters (subcarrier spacing, operating band, bandwidth) into the time relationship determination process. This parameter change enables accurate time information determination that adapts to different terminal capabilities and network conditions without significantly increasing system complexity.
3Adaptability or versatility
If time relationships are determined using terminal device information, then the flexibility and accuracy of time information determination are improved, but the device complexity increases
Solution Approach 1:
The invention inverts the traditional determination approach by using terminal device information to determine time relationships rather than using fixed base station configurations. This inversion achieves high flexibility and accuracy while keeping the determination process systematic and manageable.
Data Source
AI summary
A method for determining time information is disclosed. The method includes: obtaining, by a network node, information sent by a terminal device; and determining, by the network node, at least one of the following based on the information: a first time interval between downlink scheduling and downlink data transmission, a second time interval between the downlink data transmission and a feedback message sent by the terminal device after the terminal device receives downlink data, and a third time interval between uplink scheduling and uplink data transmission, where the information may include at least one of a subcarrier spacing, an operating band, and a bandwidth that are supported by the terminal device, and further include a first smallest value and/or a second smallest value and/or a third smallest value corresponding to the at least one item. Therefore, flexibility and accuracy of determining the time information are improved.