Sidelink Resource Timing for AGC-Stable Supplementary Data Sending
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Solution Overview
Problem
Current sidelink communication systems face challenges in coexistence of multiple subcarrier spacings (SCSs) and various physical channels or reference signals over one or more carriers, particularly the issue of automatic gain control (AGC) under sharing scenarios, leading to suboptimal data reception performance due to abrupt power surges during transmissions.
Innovation Solution
A data sending method and resource configuration method are introduced, where supplementary data is sent on a supplementary time-domain resource with the same start moment as a reference time-domain resource to address the AGC problem, ensuring consistent AGC training and proper data reception, even when the start moment of the first time-domain resource overlaps later than the reference time-domain resource.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a terminal device performs AGC at the start moment of a slot, then the AGC training is completed for initial reception, but the AGC becomes suboptimal when received power experiences abrupt surge after the start moment
Solution Approach 1:
The patent introduces a preliminary AGC training phase before actual data transmission within the slot. A first signal is transmitted at the beginning of the slot containing AGC training sequences that enable the receiving device to perform initial gain control adjustment before the main data transmission begins, ensuring optimal AGC state when actual data arrives
Solution Approach 2:
The slot structure is segmented into distinct phases: an initial phase with first signal containing AGC training sequences, and a subsequent phase with second signal containing actual data. This segmentation allows AGC training to be separated from data transmission, enabling accurate gain control setup without interfering with data content while ensuring power levels are stabilized before reception
2Productivity
If multiple subcarrier spacings and physical channels share one or more carriers, then resource utilization is improved, but the AGC problem occurs due to power abrupt surge
Solution Approach 1:
Different regions of the slot are assigned different functions with appropriate power characteristics. The initial region contains first signals with AGC training sequences designed for gain control, while the subsequent region contains second signals with actual data. Each region has optimized local properties (power levels, signal structure) suited to its specific function, allowing multiple channels and SCS to coexist without mutual interference
Solution Approach 2:
The first signal acts as an intermediary between the slot start and the actual data transmission. It contains AGC training sequences that prepare the receiving device's gain control mechanism, serving as a mediator that bridges the gap between slot initialization and data reception, ensuring smooth power transitions when multiple channels share the carrier
Data Source
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AI summary
Provided are a data sending method, a resource configuration method, a communication node and a storage medium. The data sending method includes: determining a reference time-domain resource; and in response to a first time-domain resource overlapping the reference time-domain resource and the start moment of the first time-domain resource being later than the start moment of the reference time-domain resource, sending supplementary data on a supplementary time-domain resource, where the first time-domain resource is a resource used by a first communication node to send at least one piece of first data, and the start moment of the supplementary time-domain resource is the same as the start moment of the reference time-domain resource.