Wireless Resource Selection via Aligned Sensing Periods

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Solution Overview

Problem

Conventional partial sensing methods in wireless communication systems face challenges such as inaccurate resource selection and increased likelihood of resource collisions due to mismatched sensing periods and insufficient candidate time slots, particularly in cases where the number of candidate slots is less than a predetermined threshold.

Innovation Solution

The proposed solution involves determining the position of a time slot to be listened to based on both the periodic partial sensing period and the data transmission period, and performing resource occupancy checks before reusing periodically occupied resources to minimize collisions and ensure accurate resource selection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by stationary object

If periodic partial sensing is used to reduce sensing overhead, then energy consumption and complexity are reduced, but resource selection accuracy deteriorates when the sensing period does not match the data transmission period

Engineering Contradiction:

Improvesensing energy consumptionVSAvoidresource selection accuracy

Core Design Contradiction:

Use of energy by stationary objectVSMeasurement precision

Solution Approach 1:

The patent applies dynamics by making the sensing period configurable and adaptable to match different data transmission periods. The network can dynamically adjust the sensing period parameter to align with the actual data transmission periodicity of user equipment, ensuring that sensing operations occur at optimal intervals without being fixed to a rigid schedule. This resolves the contradiction by allowing the system to maintain low overhead while adapting to varying transmission patterns.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the sensing period parameter to match the data transmission period. By adjusting this key parameter, the system ensures that periodic partial sensing occurs at times that are synchronized with actual data transmission intervals, thereby maintaining resource selection accuracy while still benefiting from reduced sensing overhead compared to continuous sensing.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If the number of candidate time slots is reduced to decrease resource selection complexity, then processing speed increases, but sensing reliability deteriorates when candidate slots are insufficient

Engineering Contradiction:

Improveresource selection speedVSAvoidsensing reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent modifies the candidate time slot selection by adjusting the window size parameter (sl-ProcessingTime) based on the sensing period and data transmission period. This parameter change allows the system to optimize the balance between the number of candidate slots and reliability requirements, ensuring sufficient candidates are available for accurate sensing while maintaining efficient resource selection processing.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If resources are periodically occupied without re-sensing to increase resource usage efficiency, then productivity improves, but collision probability increases with other user equipment

Engineering Contradiction:

Improveresource usage efficiencyVSAvoidcollision probability

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent implements periodic re-sensing at configured intervals during resource usage. Instead of continuously monitoring or never re-sensing, the system performs sensing operations periodically according to the configured sensing period. This allows the user equipment to efficiently reuse resources while periodically verifying that resources are still available, thereby reducing collision probability without significantly impacting productivity.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system incorporates feedback mechanisms where sensing results from periodic monitoring provide information about resource availability. Based on this feedback, the user equipment can adjust its resource usage behavior, avoiding collisions by detecting when resources have been taken by other users and selecting alternative resources accordingly.

Inventive Principle:

Principle #23Feedback

4Device complexity

If partial sensing is implemented to reduce measurement overhead, then device complexity decreases, but measurement precision deteriorates in mismatched periodic scenarios

Engineering Contradiction:

Improvesensing implementation complexityVSAvoidsensing result accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20240349258A1Electronic device, wireless communication method and computer-readable storage medium

Publication Date: 2024.10.17 SONY GROUP CORP

AI summary

The electronic device comprises a processing circuit configured to: determine, according to a period that is sensed by a periodic part, the position of a predetermined time slot to be monitored; according to a data transmission period of the electronic device, determine the position of a time slot that needs to be monitored; and according to the position of the predetermined time slot to be monitored and the position of the time slot that needs to be monitored, determine the position of a time slot to be actually monitored, such that the position of the time slot to be actually monitored comprises the position of the predetermined time slot to be monitored and the position of the time slot that needs to be monitored. Accordingly, sensing schemes can be optimized or improved, a sensing result is more accurate, and collision with other user equipment's resources is reduced.