Aperiodic Reference Signal Transmission Using Slot Offset Signaling
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Solution Overview
Problem
In wireless communication systems, particularly in 5G NR and other communication systems, there is a challenge in accurately transmitting and receiving aperiodic reference signals and physical shared channels due to issues with time domain characteristics and overlapping resources, leading to poor reception of reference signals and channels.
Innovation Solution
A method and apparatus that configure signaling to determine and utilize overlapping time domain resources for transmitting and receiving both reference signals and physical shared channels, without requiring new aperiodic high-layer signaling, by using periodicity and slot offset signaling to ensure proper alignment and transmission of aperiodic signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If aperiodic reference signals are transmitted using existing periodic signaling mechanisms, then signaling overhead is reduced, but the time domain alignment and reception reliability of aperiodic signals deteriorate
Solution Approach 1:
The patent segments the time domain resource allocation by separating the indication of periodicity (configured via higher-layer signaling) from the dynamic triggering mechanism (via physical layer signaling). This allows the system to use efficient periodic signaling structures while dynamically activating aperiodic transmissions, thus reducing overall signaling overhead while maintaining reception reliability through proper time domain positioning.
Solution Approach 2:
The patent applies preliminary action by pre-configuring periodicity parameters through higher-layer signaling before actual aperiodic transmission. This pre-configuration establishes the time domain framework in advance, allowing the aperiodic reference signal to be triggered efficiently without requiring complete re-negotiation of timing parameters, thereby reducing signaling overhead while ensuring reliable reception.
2Device complexity
If periodicity and slot offset signaling are used to determine aperiodic reference signal transmission, then new aperiodic high-layer signaling is avoided, but overlapping time domain resources between reference signals and physical shared channels occur
Solution Approach 1:
The patent introduces an intermediary mechanism by using physical layer triggering signaling that references pre-configured periodicity parameters. This intermediary approach allows the system to determine aperiodic transmission timing without direct high-layer signaling for each aperiodic instance, avoiding increased signaling complexity while enabling precise time domain resource allocation through the coordinated use of configured parameters and dynamic triggers.
Solution Approach 2:
The patent employs parameter changes by dynamically adjusting the slot offset parameter based on the triggering condition while maintaining the periodicity parameter from higher-layer configuration. This allows flexible time domain resource allocation for aperiodic signals without requiring changes to the underlying signaling structure, thus avoiding increased complexity while achieving precise resource alignment.
3Productivity
If multiple reference signal resources are divided into multiple sets to save signaling overhead, then signaling efficiency improves, but the determination of transmission timing and resource allocation becomes more complex
Solution Approach 1:
The patent applies universality by designing a triggering mechanism that can operate across multiple reference signal resource sets using a unified approach. The physical layer triggering signaling works consistently regardless of which resource set is activated, and the periodicity parameters from higher-layer configuration provide a common framework. This allows the system to manage multiple resource sets efficiently without proportionally increasing signaling complexity.
Data Source
AI summary
Provided are a signal transmission method and apparatus. The method includes the following steps: first signaling is configured, a slot for sending a reference signal is determined according to the first signaling, and the reference signal is sent on the slot for sending the reference signal.