Beam Transmission Gap Insertion for Reliable Beam Switching
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing beam switching gaps during beam transmissions, particularly when high subcarrier spacing is used, leading to potential performance degradation due to insufficient cyclic prefix length for beam switching delays.
Innovation Solution
Inserting a gap between contiguous transmissions on different beams, adjusting the length of the cyclic prefix to accommodate the required beam-switching delay, and using extended CP or guard bands to ensure efficient resource utilization and avoid unnecessary latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high subcarrier spacing is used to increase data rate, then spectral efficiency is improved, but the cyclic prefix length becomes insufficient for beam switching delays
Solution Approach 1:
The patent segments the time domain by inserting gap symbols between contiguous beam transmissions. These gap symbols separate the beam switching operation from the data transmission, allowing the cyclic prefix to be optimized for data while the gap accommodates the beam switching delay. This segmentation resolves the contradiction by decoupling the requirements for high spectral efficiency and reliable beam switching.
Solution Approach 2:
The patent performs beam switching in advance by inserting gap symbols before the next beam transmission begins. The gap symbols are positioned at the end of one beam transmission and the beginning of the next, providing sufficient time for the beam switch to complete before the subsequent transmission starts. This preliminary action ensures reliable beam switching while maintaining high spectral efficiency through proper timing.
2Reliability
If beam switching gaps are inserted to accommodate switching delay, then beam switching reliability is improved, but transmission time is increased
Solution Approach 1:
The patent applies local quality by inserting gap symbols only at specific locations where beam switching occurs, rather than adding gaps throughout the entire transmission. The gap symbols are strategically placed between contiguous beam transmissions, providing beam switching accommodation only where needed. This localized approach minimizes time loss while ensuring reliable beam switching at critical transition points.
3Reliability
If cyclic prefix length is extended to accommodate beam switching, then beam switching reliability is improved, but resource utilization deteriorates
Solution Approach 1:
The patent segments the transmission structure into data transmission portions and gap symbol portions. The cyclic prefix is optimized for data transmission efficiency, while separate gap symbols are inserted to accommodate beam switching delays. This segmentation allows the cyclic prefix to maintain optimal length for resource utilization, while the gap symbols provide the necessary beam switching time, resolving the contradiction between reliability and productivity.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for inserting beam switching gaps between beam transmissions. One apparatus includes a processor that that inserts a gap between contiguous transmissions from a mobile wireless communication network to a user equipment (“UE”) device, the contiguous transmissions scheduled on different beams. The apparatus includes a transceiver that indicates to the UE device a type of gap that is inserted between the contiguous transmissions that are scheduled on different beams and indicates to the UE device a number of empty symbols that are used between the contiguous transmissions that are scheduled on different beams.