Multi-Carrier Link Failure Recovery With Consolidated Signaling
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Solution Overview
Problem
In multi-carrier scenarios, existing link failure recovery methods result in high resource overheads due to the terminal sending request information for each component carrier when a link fault is detected, leading to inefficient communication.
Innovation Solution
A method where the terminal sends first request information to notify the network of multiple failed links simultaneously, reducing resource overheads by consolidating the notification across multiple carriers, followed by aperiodic second request information for new beam identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal sends request information for each component carrier separately when link failure is detected, then the network device can identify each failed link accurately, but resource overheads increase significantly
Solution Approach 1:
The patent merges multiple separate request information transmissions into a single unified request message. When link failure is detected on multiple component carriers, the terminal consolidates all failure notifications into one request information packet sent to the network device, thereby reducing resource overhead while maintaining the ability to identify each failed link through included carrier identifiers
Solution Approach 2:
The request information message is designed to serve multiple functions simultaneously: it notifies the network device of link failure, identifies which specific component carriers are affected, and triggers the beam recovery process. This multi-functional approach eliminates the need for separate signaling messages for each carrier
2Reliability
If the terminal sends periodic request information frequently to ensure reliable link failure notification, then the network device receives timely updates, but resource overheads increase
Solution Approach 1:
The patent implements periodic request information transmission with optimized timing. The terminal sends request information periodically at configured intervals rather than continuously or too frequently, balancing the need for reliable notification with resource conservation. The periodic transmission ensures the network device receives updates while avoiding excessive resource consumption
Data Source
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AI summary
This application provides a link failure recovery method and apparatus. A terminal may send first request information to a network device on a same resource (namely, a first resource) when detecting that a link of any one of a plurality of cells fails or links of any more than one of the plurality of cells fail, to notify the network device that a link of at least one of the L cells fails. In this way, in a multi-carrier scenario, compared with resource overheads in a solution in which when a link of each cell fails, one resource is occupied to send one piece of request information, resource overheads are reduced in embodiments of this application.