Relay BSR Triggering in Dual Connectivity Split Bearers
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Solution Overview
Problem
In dual connectivity (DC) communication systems, there is no effective solution for triggering a buffer status report (BSR) or pre-emptive BSR in split bearer scenarios, which affects network performance.
Innovation Solution
A method for a relay to determine whether a preset condition is satisfied based on the data volume of a service, and to trigger a BSR or pre-emptive BSR strategy for the protocol stack in a DC state, thereby implementing a BSR and/or pre-emptive BSR operation mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a relay uses dual connectivity with split bearer for data transmission, then transmission capacity and reliability are improved, but there is no implementation solution for triggering buffer status report and pre-emptive buffer status report, which affects network performance
Solution Approach 1:
The patent segments the BSR triggering mechanism into different protocol stack levels (first protocol stack and second protocol stack) corresponding to different base stations. Each protocol stack independently evaluates preset conditions and triggers BSR or pre-emptive BSR according to its own data buffer status, enabling differentiated resource reporting for split bearer scenarios in dual connectivity
Solution Approach 2:
The patent introduces pre-emptive BSR triggering mechanism that evaluates preset conditions in advance before actual data transmission. When the evaluation indicates potential buffer overflow or resource exhaustion, the system proactively triggers BSR reporting to request additional resources before the problem occurs, improving transmission reliability
2Loss of time
If the relay triggers BSR frequently to ensure timely resource allocation, then resource allocation timeliness is improved, but network overhead and signaling complexity increase
Solution Approach 1:
The patent implements selective BSR triggering based on preset condition evaluation. Instead of triggering BSR for every data arrival, the system only triggers BSR when specific conditions are met (such as buffer threshold exceeded, resource exhaustion predicted, or split bearer data volume reaching critical level). This partial action approach reduces unnecessary signaling while ensuring timely resource allocation when truly needed
Solution Approach 2:
The patent establishes a feedback mechanism where the relay continuously monitors data buffer status, transmission resource usage, and preset condition evaluations. Based on this feedback, the system dynamically adjusts BSR triggering decisions, triggering BSR only when the feedback indicates actual need for additional resources, thereby optimizing the balance between allocation timeliness and signaling overhead
Data Source
AI summary
A method for triggering a buffer status report (BSR) by a relay and related products are provided in implementations of the disclosure. The relay is in a dual connectivity (DC) state, and the method includes the following. The relay determines whether a preset condition is satisfied according to a data volume of a certain service, on condition that the relay determines that a bearer for the certain service is a split bearer. The relay determines a BSR triggering strategy for a protocol stack in the DC state according to whether the preset condition is satisfied.