Base Station Common Channel Beamforming for Coverage Expansion
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Solution Overview
Problem
The coverage area of data carried by a common channel in wireless communications is relatively small due to the broadcasting method used by base stations, which limits spectral efficiency and flexibility in service delivery.
Innovation Solution
A base station determines and dynamically adjusts coverage zones within a cell, performing beamforming on common channel data to create targeted beams that are sent to specific zones, thereby expanding the coverage area and improving spectral efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the base station uses broadcasting method to send data carried by common channel, then the data can be sent to entire cell, but the coverage area is smaller than service channel data and spectral efficiency is limited
Solution Approach 1:
The cell is divided into multiple coverage zones, and the base station performs beamforming to send common channel data to different coverage zones separately at different moments, rather than broadcasting to the entire cell at once. This segmentation enables targeted energy concentration while ensuring complete cell coverage over time
Solution Approach 2:
The base station dynamically adjusts the coverage zones and beamforming directions at different moments to cover different portions of the cell. The coverage zones set to covered state at different moments are different, creating a dynamic scanning pattern that expands overall coverage while maintaining focused energy transmission
2Area of stationary object
If the base station uses broadcasting method for common channel data, then all UEs in the cell can receive the data, but the coverage area is limited compared to service channel beamforming
Solution Approach 1:
The cell is divided into multiple coverage zones that can be independently controlled. The base station can selectively activate different coverage zones at different moments, providing flexible service delivery to different portions of the cell while expanding overall coverage area
Solution Approach 2:
The base station periodically switches between different coverage zones, with each zone being active at different moments. This periodic activation pattern ensures that all areas of the cell receive common channel data over time while maintaining the ability to adaptively control which areas are served at any given moment
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the coverage area of common channel data, allowing for more efficient use of spectral resources and flexible service delivery by concentrating energy on specific zones within the cell, addressing the limitations of traditional broadcasting methods.
Implementation Method 1
performing, by the base station, beamforming on data carried by a common channel to obtain a common channel beam of the cell at the current moment
Data Source
AI summary
A data sending method and a base station is provided. The method includes: determining a coverage zone set to a covered state in a cell at a current moment, where the cell includes multiple coverage zones, at least one set to the covered state in the cell at one moment, and coverage zones set to the covered state at different moments are different; obtaining a common channel beam of the cell at the current moment, where the common channel beam of the cell at the current moment points to the coverage zone set to the covered state in the cell at the current moment; and sending the common channel beam of the cell at the current moment to the coverage zone set to the covered state in the cell at the current moment.