Aperiodic Signal Resource Selection in UE-to-UE Direct Communication
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing aperiodic traffic in UE-to-UE direct communication, particularly in scenarios where packet generation is variable or unpredictable, leading to resource reselection overload and potential hidden node problems.
Innovation Solution
A method for selecting resources in UE-to-UE direct communication that involves sensing and selecting candidate resource groups based on the availability and usage of subchannels, ensuring that resources used for aperiodic signals do not collide with those needed for periodic signals, and using control signals to indicate available transmission slots or symbols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If resource reselection is performed frequently for aperiodic traffic, then adaptability to variable packet generation is improved, but processing overload and latency increase
Solution Approach 1:
The patent applies preliminary action by performing resource selection in advance based on sensed information about periodic signal resources. The UE selects candidate resource groups ahead of time and stores them, so when aperiodic traffic occurs, the UE can quickly choose from pre-identified candidates without performing complex real-time resource reselection, thereby reducing processing overload while maintaining adaptability.
Solution Approach 2:
The patent segments resource selection into two distinct phases: periodic signal resource identification (performed in advance) and aperiodic signal resource selection (performed quickly from candidates). By dividing the resource management task into these segments, the system reduces the computational burden during aperiodic traffic while maintaining the ability to adapt to variable packet generation patterns.
2Reliability
If resource selection is optimized for periodic signals, then reliability of periodic communication is improved, but flexibility for aperiodic traffic is reduced
Solution Approach 1:
The patent segments the resource management process into periodic signal handling (using established reliable methods) and aperiodic signal handling (using pre-selected candidate groups). This segmentation allows the system to maintain reliable periodic communication while providing flexibility for aperiodic traffic through a separate, optimized path that uses pre-computed candidates.
Solution Approach 2:
The patent applies preliminary action by pre-identifying and storing candidate resource groups that are free from periodic signal collisions. When aperiodic traffic needs to be transmitted, the UE can quickly select from these pre-prepared candidates without interfering with periodic signal reliability, thus achieving both reliability for periodic and flexibility for aperiodic traffic.
3Quantity of substance
If sensing range is expanded to detect all candidate resources, then resource availability is improved, but detection complexity and processing time increase
Solution Approach 1:
The patent segments the sensing process into periodic signal detection (comprehensive but pre-performed) and aperiodic signal candidate identification (simplified using pre-computed information). By dividing the detection task this way, the system maintains awareness of resource availability while reducing the complexity of real-time sensing for aperiodic traffic.
Solution Approach 2:
The patent applies preliminary action by performing comprehensive sensing and candidate resource identification in advance. The UE pre-determines which resource groups are available for aperiodic traffic based on sensed periodic signal patterns, storing this information for quick reference. This eliminates the need for complex real-time sensing when aperiodic traffic occurs, reducing detection complexity while maintaining resource availability.
Data Source
AI summary
One embodiment of the present disclosure provides a method for transmitting, by a receiving terminal, a feedback signal to a transmitting terminal in a wireless communication system, the method comprising a step of: receiving, by the receiving terminal, a reference signal from the transmitting terminal; and transmitting, by the receiving terminal, the feedback signal for the reference signal to the transmitting terminal, wherein the feedback signal is transmitted on the basis of compensation for a phase change that occurs when the reference signal is received. The UE is capable of communicating with at least one of another UE, a UE related to an autonomous driving vehicle, a base station or a network.