Dynamic Time Window Configuration for Wireless Signal Transmission Latency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face latency issues when using unlicensed spectra due to channel uncertainties, particularly for signals that need to be periodically sent, such as Discovery Reference Signals (DRS), as they are restricted to preconfigured positions, which is inadequate for services with high latency requirements.
Innovation Solution
Configuring time windows of varying lengths for different types of signals to allow multiple sending positions within each period, ensuring that signals can be transmitted effectively even if initial channel detection fails, thereby reducing latency and accommodating high latency requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LBT detection is used for channel access in unlicensed spectra, then coexistence with other communication systems is ensured, but transmission latency increases due to channel uncertainties
Solution Approach 1:
The patent introduces dynamic time window configuration for periodic signal transmission. Instead of fixed preconfigured positions, the system dynamically adjusts the time window length and multiple sending positions based on channel conditions and signal types, allowing flexible adaptation that reduces latency while maintaining LBT-based coexistence
Solution Approach 2:
The patent changes the parameter of transmission position from fixed to variable within a time window. By configuring different time window lengths for different signal types and allowing multiple sending positions, the system optimizes transmission timing parameters to reduce latency caused by channel uncertainties
2Device complexity
If fixed preconfigured positions are used for periodic signal transmission, then transmission timing is simplified, but latency increases when channel detection fails
Solution Approach 1:
The patent segments the transmission period into multiple time windows, each containing multiple candidate sending positions. This segmentation allows the system to try multiple positions within the window rather than relying on a single fixed position, reducing latency when initial detection fails while keeping the overall structure manageable
Solution Approach 2:
The patent performs preliminary configuration of time windows and multiple sending positions before actual transmission. This preliminary setup enables the system to quickly select alternative positions when channel detection fails, reducing latency without requiring complex real-time decision-making
3Loss of time
If multiple sending positions are configured in time windows, then transmission latency is reduced, but system complexity increases
Solution Approach 1:
The patent creates a universal time window configuration framework that can accommodate different signal types (DRS, SSB, CSI-RS) with different requirements. The same basic mechanism of time windows with multiple positions serves multiple functions for different signals, reducing overall system complexity despite the added flexibility
Data Source
Figure 1A~1C
Figure 1D~2
Figure 3~5
AI summary
Provided are a data transmission method and device. The method includes: determining a target sending position based on channel detection results of available sending positions within a set time window, a length of the set time window being associated with a type of data to be transmitted, the data to be transmitted being signaling or a signal that is periodically sent and the length of the set time window not exceeding a transmission period of the data to be transmitted; and transmitting the data at the target sending position. According to the technical solution of the present disclosure, the set time window matched with the type of the data to be transmitted is configured for the data to be transmitted that is periodically sent. Multiple sending positions may be set in each set time window, and the length of the set time window is matched with the type of the data to be transmitted. Therefore, through the technical solutions of the present disclosure, the signaling or signal transmission latency caused by channel uncertainties may be reduced, and transmission of a service with a relatively high latency requirement is ensured.