Terminal Track Context for Cell Edge Throughput Optimization
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Solution Overview
Problem
Cell edge performance issues in mobile networks cause significant fluctuations in service rates, particularly affecting high-bandwidth services like video streaming, due to co-channel interference and handover delays, especially when a terminal moves from a cell center to a cell edge and vice versa.
Innovation Solution
A terminal pre-generates a track context based on historical movement data, identifying segments with suboptimal signal quality and throughput, and sends data transmission optimization instructions to the network to adjust resource allocation and prepare for handovers, ensuring continuous high-quality service by optimizing data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a terminal moves between cells using conventional handover mechanisms, then the terminal can maintain connectivity, but service rate sharply fluctuates causing quality degradation
Solution Approach 1:
The network device performs preliminary actions by pre-configuring handover parameters and preparing target cell resources before the terminal actually needs to hand over. This includes predicting the terminal's movement trajectory and pre-establishing connection parameters for the target cell, thereby avoiding service rate fluctuations during actual handover execution.
2Reliability
If conventional handover is used when target cell has heavy load, then handover can be executed, but handover delay causes video freezing and service degradation
Solution Approach 1:
The network device performs load assessment and resource preparation in advance for potential target cells. When a terminal approaches a cell edge, the network has already evaluated the target cell's load conditions and pre-allocated necessary resources, enabling immediate handover execution without waiting for resource availability checks during the handover process.
Solution Approach 2:
The network device acts as an intermediary that manages handover timing and resource allocation. It monitors both the terminal's movement status and the target cell's load conditions, making intelligent decisions about when to execute handover to balance between maintaining service quality and avoiding delays caused by heavy load.
3Productivity
If CoMP and TTI Bunding technologies are used, then edge user throughput is improved, but throughput at cell edge remains greatly different from cell center
Solution Approach 1:
The system dynamically adjusts transmission parameters based on the terminal's real-time location and movement state. When a terminal is identified as moving towards a cell edge, the network device activates optimized handover procedures and resource allocation strategies specific to mobile scenarios, thereby adapting the system behavior to maintain consistent throughput across different cell areas.
Data Source
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AI summary
A data transmission optimization method, a terminal, and a network device are provided, to improve service quality when a terminal moves to a cell edge. The terminal determines to move along a track route included in a track context and reach a to-be-optimized route segment on the track route, where the track context is pre-generated by the terminal, and includes a track route along which the terminal moves and that is passed through by the terminal in a historical time and a to-be-optimized route segment on the track route, a value of a predefined measurement parameter meets a preset threshold value range when the terminal moves in the to-be-optimized route segment, and the measurement parameter includes at least one of signal quality, an uplink throughput rate, and a downlink throughput rate. The terminal sends a data transmission optimization instruction to a network device, where the data transmission optimization instruction is used to instruct the network device to perform a data transmission optimization processing operation, and the data transmission optimization processing operation includes adjusting a resource allocation policy of the terminal.