RLF Report Structure for Relay-Connected Terminals
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Solution Overview
Problem
The existing Radio Link Failure (RLF) mechanism in LTE systems does not apply to scenarios where a terminal is connected with a relay, limiting the ability to manage and improve network performance in Device-to-Device (D2D) communication scenarios involving relays.
Innovation Solution
A report sending method that generates an RLF report including connected state identifiers and link quality information, allowing terminals to indicate their connection state and wireless environment conditions, enabling access network devices to identify and manage similar wireless environments and improve access quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the existing RLF mechanism is used in LTE systems, then the terminal can communicate with the base station directly, but the mechanism does not apply to scenarios where the terminal is connected with a relay
Solution Approach 1:
The patent extends the RLF mechanism to support both direct-connection scenarios (terminal to base station) and relay-connected scenarios (terminal to base station via relay). The RLF report is enhanced to include connected state identifiers that distinguish between these two modes, allowing the same RLF mechanism to universally handle different connection topologies. This resolves the contradiction by making the RLF mechanism adaptable to multiple connection types while maintaining reliable connection management in each scenario.
2Measurement precision
If the terminal reports detailed wireless environment information including relay connection state, then the access network device can better manage similar wireless environments, but the report complexity increases
Solution Approach 1:
The RLF report is segmented into distinct components: a connected state identifier field that indicates whether the terminal was in direct-connection or relay-connected state, and separate wireless environment information fields that detail the specific conditions. This segmentation allows the access network device to process different types of information separately, improving measurement precision for environment identification while keeping the report structure organized and manageable rather than monolithic and complex.
Data Source
AI summary
The embodiments of the present invention relate to the field of communications, and provided thereby are a report sending method, report receiving method, device and system, the method comprising: when radio link failure (RLF) occurs, a terminal generates an RLF report, the RLF report comprising relevant information about the wireless environment in which the terminal is located when the RLF occurs; the terminal receives a terminal information request sent by an access network device, the terminal information request being used for acquiring the RLF report generated by the terminal; and the terminal sends the RLF report to the access network device. According to the embodiments of the present invention, the access network device may identify the wireless environment where the terminal is located when RLF occurs according to an RLF report, so as to subsequently optimize and manage an accessed terminal on the basis of the wireless environment and to improve the access quality of the terminal.