Terminal Device Beam Sweeping Configuration
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Solution Overview
Problem
In current cellular systems, especially at high frequencies, beam sweeping for terminal-device synchronization is inefficient due to excessive use of frequency and time resources, leading to increased overhead and reduced operational efficiency, particularly when the terminal is close to the base station.
Innovation Solution
A terminal device that receives and reports synchronization signals based on prioritized beam sweeping configurations, differing in the number of synchronization signals transmitted during a predetermined period, allowing for efficient beam operation by selecting appropriate configurations based on distance from the base station, using a combination of high-frequency and low-frequency beam sweeping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If beam sweeping is performed using multiple synchronization signals with different beam configurations, then synchronization accuracy is improved, but frequency and time resource overhead increases
Solution Approach 1:
The patent changes the parameter of beam sweeping configuration by introducing multiple types with different numbers of synchronization signals. The base station configures different beam sweeping types (first type with more signals, second type with fewer signals) and dynamically selects which type to use based on terminal distance, thereby optimizing the balance between synchronization accuracy and resource overhead.
Solution Approach 2:
The patent implements dynamic selection of beam sweeping configuration types based on terminal distance from the base station. The base station determines the appropriate beam sweeping type (first or second) according to the terminal's proximity, making the system adaptive rather than static. This dynamic approach allows the system to use more resources when needed (far terminals) and fewer resources when sufficient (near terminals).
2Reliability
If accurate beam is used for communication, then communication reliability is improved, but beam operation efficiency deteriorates
Solution Approach 1:
The patent introduces a parameter change in beam configuration by allowing switching between different beam sweeping types. For terminals close to the base station, the system uses the second beam sweeping type with fewer synchronization signals, reducing beam operation overhead while maintaining sufficient communication reliability. For distant terminals, the first type with more signals ensures reliable synchronization.
Solution Approach 2:
The patent applies local quality by tailoring the beam sweeping configuration to the specific local condition of terminal distance. Different parts of the coverage area (near vs. far terminals) receive different beam sweeping configurations appropriate to their local requirements, rather than applying a uniform configuration to all terminals.
Data Source
AI summary
A control unit receives at least one of a plurality of synchronization signals transmitted after undergoing beam sweeping via a wireless communication unit. The beam sweeping includes each of the plurality of synchronization signals forming a different beam and transmitted from the base station during a predetermined period of time. The control unit determines, from a plurality of pieces of beam sweeping configuration information, one piece of the configuration information based on priority between a plurality of types of beam sweeping and receives the synchronization signal or report the received synchronization signal to the base station using the one piece of the configuration information determined based on the priority. The number of the synchronization signals transmitted during a predetermined period of time varies among the plurality of pieces of beam sweeping configuration information.