Sidelink Paging Resource Configuration for Idle and Inactive Terminals

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Solution Overview

Problem

There is a need for efficient methods to page terminals operating in an idle or inactive state in sidelink communication systems.

Innovation Solution

The proposed solution involves a method where a transmitting terminal receives sidelink paging configuration information and paging downlink control information from a base station, and then transmits an SL paging message to one or more receiving terminals in a sidelink resource indicated by the paging control information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If terminals operate in idle or inactive state to save energy, then energy consumption is reduced, but paging capability is lost

Engineering Contradiction:

Improveenergy consumptionVSAvoidpaging capability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The base station performs preliminary actions by determining SPO resources and configuring paging occasion information before terminals enter idle/inactive state. This allows the paging structure to be pre-established, ensuring that terminals can be effectively paged later when they need to be reached, while still maintaining energy-saving operation during idle periods

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The SPO (Sidelink Paging Occasion) resources act as an intermediary mechanism between the base station and terminals in idle/inactive state. The SPO provides a designated time-frequency resource where paging messages can be transmitted, enabling reliable paging capability while allowing terminals to remain in energy-saving states between paging occasions

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If paging messages are transmitted frequently to ensure reliable delivery, then paging reliability is improved, but system overhead increases

Engineering Contradiction:

Improvepaging delivery reliabilityVSAvoidsystem overhead

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

Paging is performed periodically at configured SPO intervals rather than continuously. The base station determines SPO resources with specific periodicity, allowing terminals to wake up at predictable intervals to check for paging messages. This periodic approach ensures reliable delivery while minimizing the quantity of paging transmissions compared to continuous paging

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The base station pre-configures SPO resources and paging occasion information before actual paging transmissions occur. This preliminary configuration establishes an efficient paging structure that reduces overhead by avoiding ad-hoc paging message formulation and resource allocation for each paging event

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12349106B2Method and device for paging in sidelink communication

Publication Date: 2025.07.01 HYUNDAI MOTOR CO LTD

AI summary

A method and a device for paging in sidelink communication are disclosed. An operating method of a transmitting terminal comprises the steps of: receiving SL paging setup information from a base station; receiving a paging DCI from the base station in an SPO indicated by the SL paging setup information; and transmitting an SL paging message to one or more receiving terminals in a sidelink resource indicated by the paging DCI.