Terminal Communication Mode Adjustment for High-Speed Railways
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Solution Overview
Problem
High-speed movement of 5G terminal devices, particularly in scenarios like high-speed railways, leads to increased frequency offsets and frequent cell handovers, negatively impacting communication performance due to higher antenna counts and frequencies, which existing solutions like rotatable antennas, GSM-R modes, and 5G dedicated networks fail to adequately address.
Innovation Solution
A method and apparatus for adjusting the communication mode of terminal devices by acquiring and analyzing the running state, including scenario, network performance, and speed, and selecting from multiple adjustment modes to enhance communication quality, such as uplink/downlink adjustments, frequency offset compensation, SRS movement estimation, and path network matching, to improve signal strength and throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of antennas and communication frequency are increased to improve communication performance, then communication capacity is improved, but frequency offset increases leading to more frequent cell handovers
Solution Approach 1:
The patent applies dynamics by making the communication mode adjustable and adaptive. The terminal device dynamically switches between different communication modes (first communication mode and second communication mode) based on real-time detection of frequency offset and cell handover status. This dynamic adaptation allows the system to maintain high communication capacity while reducing the negative impact of frequency offset on cell handover stability.
Solution Approach 2:
The patent changes operational parameters by switching between different communication modes with distinct parameter sets. In the first communication mode, the device operates with certain antenna configurations and frequency settings optimized for capacity. In the second communication mode, the device adjusts parameters to compensate for frequency offset, thereby stabilizing cell handovers. This parameter change strategy resolves the contradiction between capacity and stability.
2Speed
If high-speed movement scenarios are supported to improve mobility, then speed is improved, but frequency offset increases causing communication performance degradation
Solution Approach 1:
The patent implements dynamics through real-time detection and adaptive mode switching. The terminal device continuously monitors frequency offset and communication quality, dynamically transitioning between communication modes based on the detected conditions. This dynamic response enables the system to maintain communication reliability even during high-speed movement by adjusting operational parameters to compensate for Doppler-induced frequency offsets.
Solution Approach 2:
The patent employs feedback mechanisms where the terminal device detects frequency offset and communication quality in real-time, then uses this feedback information to determine whether to switch communication modes. The feedback loop ensures that the communication mode is always optimized for the current movement conditions, resolving the contradiction between high-speed mobility and communication quality.
3Adaptability or versatility
If multiple adjustment modes are implemented to improve communication quality, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the communication mode into distinct, manageable types (first communication mode and second communication mode). Each mode has specific operational characteristics and is selected based on predefined conditions. This segmentation simplifies the complexity management by creating clear decision boundaries and reducing the cognitive load on the communication mode selection mechanism.
Solution Approach 2:
The patent manages complexity through parameter-based differentiation. Instead of implementing completely different communication systems, it adjusts key parameters (antenna configuration, frequency settings, modulation schemes) to create multiple communication modes. This parameter change approach maintains adaptability while keeping the underlying system architecture relatively simple and manageable.
Data Source
AI summary
A method and apparatus for adjusting a communication mode of a terminal device, a terminal device, and a storage medium are disclosed. The method may include: acquiring a running state of the terminal device, the running state includes one or any combination of a running scenario, network performance, or a running speed; determining an adjustment mode matching the running state, N adjustment modes corresponding to different running states are preset, and N is an integer greater than 1; and adjusting the communication mode of the terminal device according to the adjustment mode.