Downlink Signal Separation for Base Station Energy Saving
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Solution Overview
Problem
In wireless communication systems, especially in GSM and UMTS, the continuous transmission of public signals like pilot and broadcast signals prevents the power amplifier modules from being turned off, leading to inefficient energy consumption due to the need for constant power output, and existing energy conservation methods fail to effectively reduce power consumption across all submodules in base stations.
Innovation Solution
An apparatus and method for processing downlink signals that differentiate between public and traffic signals, allowing the traffic power amplifier unit to be disabled during low or no traffic, thereby disconnecting or hibernating the traffic transmission link, which separates the transmission link of traffic signals from public signals, enabling energy conservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If public signals are transmitted continuously through a unified transmission link, then communication reliability is maintained, but energy consumption increases because the power amplifier module cannot be turned off
Solution Approach 1:
The patent divides the unified transmission link into separate public signal transmission link and traffic signal transmission link. The public signal transmission link continuously transmits pilot signals, synchronization signals, and broadcast signals, while the traffic signal transmission link transmits traffic signals only when needed. This segmentation allows the traffic power amplifier to be turned off during low or no traffic conditions, reducing energy consumption while maintaining reliable public signal transmission.
2Reliability
If the power amplifier module is designed for high load standards, then it can meet energy requirements under high load, but energy resources are wasted unnecessarily in low load state
Solution Approach 1:
The patent implements dynamic control of the traffic power amplifier module based on traffic load conditions. When traffic volume exceeds a threshold, the traffic power amplifier is activated; when traffic volume is below the threshold or zero, the traffic power amplifier is turned off. This dynamic adjustment allows the system to meet high load energy requirements when needed while avoiding energy waste during low load states.
3Use of energy by moving object
If static bias voltage of power amplifier module is turned off to reduce static power consumption, then energy conservation is achieved, but the module cannot operate when traffic arrives
Solution Approach 1:
The patent implements periodic monitoring of traffic volume with threshold-based activation. The system continuously monitors traffic volume and activates the traffic power amplifier when the threshold is exceeded. This periodic action ensures the power amplifier is turned off during idle periods to save energy while being quickly activated when traffic arrives, maintaining operational readiness without continuous power consumption.
Data Source
AI summary
Embodiments of the present invention disclose an apparatus and a method for processing a downlink signal, which relate to the field of wireless communication and can effectively reduce energy consumption of a base station. The apparatus for processing a downlink signal according to the present invention includes: a downlink signal differentiating unit, a public baseband processing unit, and a traffic baseband processing unit, where the downlink signal differentiating unit is configured to receive a downlink signal and differentiate a type of the downlink signal; the public baseband processing unit is connected to the downlink signal differentiating unit, and is configured to receive a public downlink signal obtained by the downlink signal differentiating unit by means of differentiation, encode and modulate the public downlink signal to obtain a public baseband signal, and transmit the public baseband signal to a carrier unit; the traffic baseband processing unit is connected to the downlink signal differentiating unit, and is configured to receive a traffic downlink signal obtained by the downlink signal differentiating unit by means of differentiation, encode and modulate the traffic downlink signal to obtain a traffic baseband signal, and transmit the traffic baseband signal to the carrier unit. The embodiments of the present invention mainly apply to a process of processing a downlink signal.