Access AS Layer Interface Availability Reporting for Sidelink
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Solution Overview
Problem
Current communication systems lack clear information on interface availability, which hinders effective interface selection and communication efficiency between terminal devices and network devices in sidelink communication.
Innovation Solution
A method for reporting interface availability is introduced, where the access AS layer of a terminal device provides detailed availability information, including interface status, link information, time applicability, sidelink resource selection mode, and current resource selection mode to the upper layer, enabling better interface selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal device uses autonomous resource selection mode for sidelink communication, then the communication flexibility and independence are improved, but the interface availability information becomes unclear and interface selection effectiveness deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the access layer reports interface availability information to the upper layer. The terminal device determines whether the PC5 interface is available based on specific conditions (such as whether the device is in RRC connected state, whether sidelink resources are configured, etc.), and this determination is fed back to the upper layer for interface selection decisions. This feedback loop ensures that interface availability information is clearly provided even in autonomous resource selection mode.
2Measurement precision
If detailed interface availability information is reported, then the interface selection effectiveness is improved, but the information processing complexity and overhead increase
Solution Approach 1:
The patent applies local quality by providing different levels of interface availability information based on specific conditions and scenarios. The access layer determines interface availability based on relevant local conditions (RRC state, sidelink resource configuration, etc.) and reports only the necessary information for the current context. This avoids reporting all possible information uniformly, thereby reducing processing complexity while maintaining the precision needed for effective interface selection.
Data Source
AI summary
This disclosure provides a method for reporting interface availability, a method for indicating interface availability, and a device. The reporting method includes: reporting, by an access AS layer, availability information of a target interface of a first terminal device to an upper layer; where the availability information includes at least one of first information, second information, third information, fourth information, and fifth information; the first information includes availability of the target interface; the second information includes link information that the availability of the target interface is applicable to; the third information includes time information that the availability of the target interface is applicable to; the fourth information includes information about a sidelink resource selection mode the availability of the target interface is applicable to; and the fifth information includes information about a current sidelink resource selection mode of the first terminal device.