Sidelink Discovery Resource Reporting for Frequency Flexibility
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Solution Overview
Problem
Current techniques lack a specific method for acquiring and reporting resources for Sidelink Direct Discovery, particularly in scenarios involving communication outside network coverage or across different frequency and PLMN areas.
Innovation Solution
A terminal device and base station system capable of efficiently performing Sidelink Direct Discovery, including a method for resource acquisition and reporting, allowing for effective communication even outside network coverage and across different frequencies and PLMNs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a terminal device demands a period of time (gap) while regular communication is discontinued to transmit or receive Sidelink Direct Discovery on another frequency, then Sidelink Direct Discovery can be performed on different frequencies, but communication continuity is interrupted and time is lost
Solution Approach 1:
The base station pre-configures measurement gaps in advance, allowing the terminal device to know when communication will be suspended for Sidelink Direct Discovery. This preliminary arrangement optimizes resource allocation and minimizes unexpected interruptions to regular communication.
Solution Approach 2:
The base station acts as an intermediary that coordinates between the terminal device's Sidelink Direct Discovery needs and ongoing regular communication. It manages the measurement gap configuration and resource allocation, balancing discovery operations with communication continuity.
2Adaptability or versatility
If the terminal device reports Sidelink Direct Discovery resources to the base station device to generate measurement gaps, then measurement gaps can be created for discovery operations, but the device complexity and signaling overhead increase
Solution Approach 1:
The terminal device autonomously selects and reports Sidelink Direct Discovery resources based on pre-configured parameters and its own needs. This self-service approach reduces the base station's management burden and simplifies the overall resource allocation process while maintaining flexibility.
3Adaptability or versatility
If Sidelink Direct Discovery is performed outside network coverage or on another frequency, then communication versatility is improved, but the reliability of network-coordinated resource management decreases
Solution Approach 1:
The base station provides pre-configuration information including frequency ranges, resource pools, and measurement gap parameters before the terminal device operates outside network coverage. This preliminary configuration ensures that even when operating autonomously, the terminal device follows reliable, pre-established guidelines for resource management.
Data Source
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AI summary
A terminal device, a base station device, a communication system, a measurement method, and an integrated circuit, which are capable of efficiently performing Sidelink Direct Discovery, are provided. The terminal device, in a case where there exists at least one applicable neighboring cell to be reported to a measurement identifier with a measurement reporting procedure being triggered, a best neighboring cell up to a maximum cell number is included in a neighboring cell measurement result; and in a case where a measurement purpose of an associated reporting configuration is configured to report on monitoring of a Sidelink Direct Discovery announcement, CGI information about a cell indicated by a first parameter is obtained in an associated measurement object, and the cell broadcasts configuration information about the monitoring of the Sidelink Direct Discovery announcement, the configuration information about the monitoring of the Sidelink Direct Discovery announcement that has been acquired is included in measurement reporting.