Beam Switching Numerology Adjustment for Data Loss Reduction
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Solution Overview
Problem
Frequent beam switching in multi-beam networks for mobile telecommunications often results in data loss due to the lack of robustness in existing waveform parameters, particularly subcarrier spacing and cyclic prefix, which are not optimized for varying channel conditions and user equipment mobility.
Innovation Solution
The method involves adjusting waveform parameters, specifically subcarrier spacing and cyclic prefix, to change numerology for more robust transmission during beam switching, and reverting to a higher numerology for increased transmission rates post-switching, ensuring reliable communication by using a more robust numerology during beam switching and a higher numerology for data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequent beam switching is performed to maintain reliable connection for mobile user equipment, then connection reliability is improved, but data loss increases during switching process
Solution Approach 1:
The patent dynamically adjusts waveform parameters (subcarrier spacing and cyclic prefix length) based on the beam switching state. During beam switching, the system transitions to a more robust numerology configuration with larger subcarrier spacing and longer cyclic prefix to maintain connection reliability, then reverts to normal configuration after switching completes, thereby reducing data loss while maintaining reliability.
Solution Approach 2:
The invention changes waveform parameters (numerology) to adapt to different operational states. By modifying subcarrier spacing and cyclic prefix length during beam switching events, the system optimizes transmission robustness dynamically, resolving the contradiction between maintaining reliable connections and minimizing data loss during transitions.
2Reliability
If robust numerology with larger subcarrier spacing and longer cyclic prefix is used during beam switching, then transmission robustness is improved, but transmission rate decreases
Solution Approach 1:
The system periodically switches between two numerology configurations based on operational state: using robust numerology (larger subcarrier spacing, longer cyclic prefix) during beam switching events, and normal numerology for data transmission. This periodic alternation ensures high transmission robustness when needed while maintaining high transmission rates during normal operation.
Solution Approach 2:
The patent implements dynamic parameter adjustment where waveform characteristics change based on the beam switching state. The system transitions to robust numerology configuration during switching events to ensure reliability, then reverts to normal configuration to maximize transmission rate, thereby resolving the contradiction between robustness and productivity.
3Productivity
If normal numerology is used during beam switching to maintain high transmission rate, then productivity is improved, but transmission robustness decreases leading to data loss
Solution Approach 1:
The system prepares by switching to robust numerology configuration before beam switching occurs and maintains it throughout the switching process. This preliminary action ensures transmission robustness is in place before potential data loss risks arise, allowing the system to safely use normal numerology for high-rate transmission during stable operation.
Solution Approach 2:
The invention dynamically changes waveform parameters based on operational state. By switching to larger subcarrier spacing and longer cyclic prefix during beam switching events, the system ensures robustness when needed while maintaining normal parameters for high productivity during stable transmission, resolving the contradiction between rate and robustness.
Data Source
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AI summary
A beam switching method in a multi beam network having a user equipment (16) and at least one node (12) providing multiple beams, comprises the following steps: a) conducting a beam switching process (19) of the user equipment (16) from a first beam provided by the at least one node (12) to a second beam, and b) sending a first numerology control message (18) from the at least one node (12) to the user equipment (16) prior to the beam switching process (19). Further, a node (14) and a multi beam network (10) are provided.