LTE Handover Data Continuity via Temporary CSI Configuration
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Solution Overview
Problem
Conventional LTE communication systems experience reduced data transmission efficiency and wastage of network resources during handover processes due to the need for synchronization between base stations, which causes data transmission to stop temporarily, leading to inefficiencies.
Innovation Solution
The method involves the source base station receiving temporary Channel State Information (CSI) from the target base station, transmitting a Radio Resource Control (RRC) configuration to the mobile apparatus, allowing continuous data reception from the source base station while synchronizing with the target base station, and then forwarding un-transmitted data to the target base station once synchronization is complete.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data transmission stops during handover synchronization, then synchronization reliability is improved, but data transmission efficiency deteriorates
Solution Approach 1:
The source base station performs preliminary actions by determining whether to stop data transmission before the handover synchronization process begins. The system evaluates channel quality indicators and data buffer status in advance, making a proactive decision about transmission continuation, thus avoiding the contradiction between stopping for synchronization and maintaining transmission efficiency
Solution Approach 2:
The system dynamically adjusts data transmission behavior during handover based on real-time channel conditions and synchronization progress. Rather than a fixed stop-start approach, the system continuously monitors channel quality indicators (CQI) and adjusts transmission decisions, enabling flexible adaptation that maintains both synchronization reliability and transmission efficiency
2Measurement precision
If data transmission stops at the start of synchronization, then synchronization accuracy is improved, but network resource utilization deteriorates
Solution Approach 1:
The mobile apparatus provides feedback through channel quality indicators (CQI) during the handover process. The source base station uses this feedback to make informed decisions about continuing or stopping data transmission, ensuring that synchronization accuracy is maintained while avoiding unnecessary transmission stops that would waste network resources
Solution Approach 2:
The system changes operational parameters dynamically during handover, specifically adjusting data transmission status based on channel quality indicator thresholds and synchronization progress. This parameter-based control allows the system to maintain synchronization accuracy while optimizing network resource utilization by avoiding premature transmission stops
Data Source
AI summary
An LTE communication system is provided. The LTE communication system includes a mobile apparatus and a source BS. The source BS receives a target BS CSI configuration from a target BS and transmits an RRC configuration to the mobile apparatus. The RRC configuration includes a target BS temporary CSI configuration and a source BS temporary CSI configuration. The mobile apparatus continuously receives data from the source BS according to the source BS temporary CSI configuration, and synchronizes with the target BS while receiving data. The source BS stops transmitting data to the mobile apparatus based on a request from the mobile apparatus or signal quality of the mobile apparatus, and forwards un-transmitted data to the target BS. The mobile apparatus handovers to the target BS after finishing the synchronization with the target BS, and continues to receive the un-transmitted data from the target BS.