Base Station Beam ID Sharing for Complete Multi-Terminal Search
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Solution Overview
Problem
Existing beam searching methods in high-frequency bands face challenges with increased time and frequency resource demands, particularly in point-to-multi-point communication scenarios, leading to incomplete searches and limited frequency resources for other devices.
Innovation Solution
A base station device and method that assigns different beam IDs to candidate beams among terminal devices to maximize the number of combinations sharing the same ID, allowing pilot signals to be transmitted in the same time or frequency domain, thereby reducing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam searching is performed for each terminal device using separate time or frequency resources, then beam searching completeness is improved, but time and frequency resources increase in proportion to the number of terminal devices
Solution Approach 1:
The patent merges beam searching operations for multiple terminal devices by assigning the same beam ID to candidate beams of different terminal devices when those beams can share time-frequency resources. This allows multiple terminal devices to perform beam searching simultaneously using the same time and frequency resources, rather than requiring separate resources for each device, thereby reducing overall resource consumption while maintaining search completeness.
Solution Approach 2:
The patent makes beam resources universal by allowing the same beam ID and associated time-frequency resources to serve multiple terminal devices simultaneously. Instead of dedicating unique beam resources to each terminal device, the system enables one set of beam resources to perform multiple functions for different terminal devices, reducing the total quantity of resources needed.
2Manufacturing precision
If beam searching is performed periodically with increased time resources, then more candidate beams can be searched, but beam searching may still be incomplete within predetermined time
Solution Approach 1:
The patent enables continuous and simultaneous beam searching for multiple terminal devices by allowing overlapping beam searches in the same time-frequency resources. Instead of sequentially searching for each terminal device (which creates idle time gaps), the system maintains continuous useful action by having multiple beam searches proceed concurrently, improving thoroughness without increasing total time.
3Productivity
If frequency resources are increased for beam searching, then more candidate beams can be searched in parallel, but frequency resources available for other communication devices are limited
Solution Approach 1:
The patent combines beam searching operations for multiple terminal devices into the same frequency resources by assigning identical beam IDs to compatible candidate beams. This merging allows the system to achieve parallel beam searching efficiency without requiring additional frequency resources, as multiple devices share the same frequency allocation, thereby leaving more frequency resources available for other communication purposes.
Data Source
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AI summary
A base station device includes: a candidate beam determination unit configured to determine candidate beams that are candidates for a beam of a pilot signal to be transmitted for each terminal device that is a transmission partner; a beam ID assignment unit configured to assign a different beam ID to the candidate beam of the same terminal device and assign beam IDs to candidate beams among different terminal devices so that the number of combinations of the candidate beams to which the same beam ID is assigned is maximized; and a pilot signal generation unit configured to generate a pilot signal to be transmitted in a same time domain and a same frequency domain for each candidate beam to which the same beam ID is assigned.