Base Station Antenna Number Control for 5G Uplink Capacity
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Solution Overview
Problem
The limited reception/transmission capability of 5G base station antennas, particularly in scenarios like indoor coverage and multi-carrier overlapping coverage, restricts the system capacity and uplink transmission efficiency, especially when 5G terminal devices with 2T4R capability are used with base stations having fewer antennas.
Innovation Solution
A method and apparatus that allows a base station to control the number of transmitting antennas of a terminal device through an antenna number change instruction, optimizing antenna distribution across multiple carriers to maximize uplink traffic transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a base station uses a limited number of receiving antennas (e.g., 1T1R or 2T2R), then the base station hardware complexity is reduced, but the uplink transmission capacity is limited and cannot match the 2T4R capability of 5G terminal devices
Solution Approach 1:
The patent applies dynamics by enabling the base station to dynamically adjust the number of transmitting antennas based on real-time channel conditions and terminal capabilities. The base station can switch between different antenna configurations (1T1R, 2T2R, 4T4R) depending on the operational requirements, allowing the system to adapt from a fixed limited configuration to a flexible dynamic one that optimizes uplink capacity while managing hardware constraints
Solution Approach 2:
The patent changes the parameter of antenna number configuration by introducing a mechanism where the base station can modify the number of transmitting antennas from a fixed limited value to a variable value. This parameter change allows the system to transition between different transmission modes (single-stream, two-stream, four-stream) to match terminal capabilities and optimize performance without requiring permanent hardware reconfiguration
2Productivity
If the base station transmits an antenna number change instruction to the terminal device, then the uplink transmission capacity is optimized, but the control complexity and signaling overhead increase
Solution Approach 1:
The patent implements feedback by establishing a control loop where the base station monitors terminal capabilities and channel conditions, then sends antenna number change instructions to the terminal accordingly. The terminal executes these instructions and the base station verifies the outcome, creating a closed-loop feedback mechanism that optimizes uplink transmission while managing control complexity through automated decision-making based on real-time parameters
3Adaptability or versatility
If multiple carriers have different numbers of receiving antennas (e.g., carrier 1: 1T1R, carrier 2: 2T2R, carrier 3: 4T4R), then the system can serve diverse coverage areas, but the uplink carrier aggregation efficiency is reduced due to mismatched antenna capabilities
Solution Approach 1:
The patent applies local quality by allowing different carriers to have different antenna configurations tailored to their specific coverage areas and requirements. Each carrier can be optimized independently (carrier 1 with 1T1R for basic coverage, carrier 2 with 2T2R for moderate capacity, carrier 3 with 4T4R for high capacity), and the base station selectively activates the appropriate configuration for each carrier based on the terminal's location and capabilities, thereby maintaining both adaptability and aggregation efficiency
Data Source
AI summary
Disclosed are an antenna number change method, apparatus and device, and a storage medium. The antenna number change method, applied to a base station, may include: determining a number of uplink receiving antennas of the base station; determining, based on the number of uplink receiving antennas of the base station and a number of uplink transmitting antennas of a terminal device, whether the number of uplink receiving antennas of the base station is limited; and in response to the number of uplink receiving antennas of the base station being limited, transmitting an antenna number change instruction to the terminal device, the antenna number change instruction is used for instructing the terminal device to change the number of uplink transmitting antennas.