Base Station Power Control Using Common and Per-Antenna Adjustments
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Solution Overview
Problem
Existing base station systems face challenges in efficiently controlling transmission and reception power across multiple antennas, leading to increased circuit complexity and cost, as well as delayed power control processing times, especially when the number of antennas increases.
Innovation Solution
A base station configuration that includes power change units for each antenna, a power control unit, a power change management unit to manage common and individual power changes, and notification units to facilitate power adjustments using a reduced number of control lines, allowing for advanced power control processing without increasing circuit scale.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of antennas is increased to improve communication speed and throughput, then the communication efficiency is improved, but the circuit complexity and control lines increase
Solution Approach 1:
The patent segments the power control into two independent parts: common power control (affecting all antennas) and individual power control (affecting each antenna separately). This segmentation allows the system to manage multiple antennas with reduced control complexity by handling common adjustments globally and individual adjustments locally.
Solution Approach 2:
The patent merges the common power control signals for all antennas into a single control path, while individual power control is handled separately. This merging reduces the total number of control lines needed, as common adjustments don't require separate signaling for each antenna.
2Productivity
If the number of antennas is increased to improve communication speed, then the throughput is improved, but the processing time for power control increases
Solution Approach 1:
The patent performs preliminary power control adjustments by first applying common power control to all antennas simultaneously, then following up with individual power control adjustments. This preliminary action on common power reduces the overall processing burden and enables faster individual adjustments.
3Productivity
If individual power control is implemented for each antenna to improve communication efficiency, then the throughput is improved, but the notification signal information increases
Solution Approach 1:
The patent segments notification signals into two categories: common power control notifications (applicable to all antennas) and individual power control notifications (specific to each antenna). This segmentation reduces total information transmission by grouping common adjustments separately from individual adjustments.
Solution Approach 2:
The patent merges common power control notifications into a single signal that applies to all antennas simultaneously, rather than sending separate notifications for each antenna. This merging significantly reduces the total notification signal information while maintaining effective power control.
Data Source
Figure 1
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AI summary
Provided are n antennas and n power change units; a power control unit; a power change management unit managing a common power change amount that is common to antennas, which corresponds to a prescribed reception power, and an individual power change amount that corresponds to a difference between a reception power of each antenna and the prescribed reception power, for every terminal; a common power notification unit notifying the power control unit of the common power change amount in accordance with a target terminal being a destination or source of a signal before the signals are transmitted or received; an individual power notification unit notifying the power control unit in advance of the individual power change amount in accordance with the each terminal at a prescribed timing, in which the power control unit stores the individual power change amount in a storage unit, and performs control of power changing by adding up the common power change amount in accordance with the target terminal, which is notified from the common power notification unit, and the individual power change amount.