RLC Status Reporting During Handover With MAC Reset
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Solution Overview
Problem
In mobile communication systems, the timely triggering of radio link control (RLC) status reports during handover is often delayed, leading to inefficiencies and disruptions in service transmission continuity.
Innovation Solution
Implementing a method to trigger RLC status reports immediately during handover events involving RLC maintenance and medium access control (MAC) resetting or partial resetting, using specific conditions such as discontinuous data packets or poll bits in RLC protocol data units (PDUs) to ensure timely reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If RLC status report triggering follows conventional procedures during handover, then device complexity and signaling overhead are reduced, but timeliness of status reporting deteriorates causing service transmission interruptions
Solution Approach 1:
The patent applies preliminary action by proactively triggering RLC status reports before handover completion based on predicted handover events. The access network device determines upcoming handovers and triggers status reports in advance, ensuring timely delivery without waiting for conventional post-handover triggering mechanisms.
Solution Approach 2:
The patent implements feedback mechanisms where the access network device monitors handover status and RLC buffer states, then dynamically adjusts status report triggering. The terminal device also provides feedback about its handover status, enabling coordinated timing of status reports to ensure timeliness while avoiding excessive signaling.
2Reliability
If RLC status reports are triggered immediately during handover, then service transmission continuity is improved, but signaling overhead increases
Solution Approach 1:
The patent applies local quality by selectively triggering RLC status reports only for specific radio bearers that require handover. The access network device identifies individual bearers needing status reports and triggers them selectively rather than universally, reducing overall signaling overhead while maintaining service continuity for critical bearers.
Solution Approach 2:
The patent uses partial action by triggering status reports only when necessary based on buffer status and handover predictions. The access network device evaluates whether status reports are actually needed before triggering them, avoiding unnecessary signaling while ensuring reports are sent when they would impact service continuity.
3Productivity
If conventional handover procedures are used without proactive status report triggering, then data transmission efficiency is maintained under normal conditions, but transmission efficiency deteriorates during handover due to status report delays
Solution Approach 1:
The patent applies preliminary action by triggering RLC status reports before handover completion based on predicted handover events. The access network device determines upcoming handovers and triggers status reports in advance, ensuring timely delivery without waiting for conventional post-handover triggering mechanisms, thus maintaining transmission efficiency during handover.
Data Source
AI summary
A communication method that determines whether a behavior performed during current handover is a first behavior, wherein the first behavior comprises radio link control (RLC) maintenance and medium access control (MAC) resetting or partial resetting. The method sends an RLC status report to a second device in response to determining that the behavior performed during the current handover is the first behavior, wherein the RLC status report indicates a receiving status of a data packet.