Dynamic Narrowband Reception Mode for Mobile Receiver Power Reduction
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Solution Overview
Problem
Conventional broadband communication receivers in mobile terminals consume excessive power due to high data rate processing, even during low-speed data services, as they maintain a high processing load across the entire bandwidth, significantly impacting battery life.
Innovation Solution
A method and receiver configuration that dynamically switch between broadband and narrowband modes based on the frequency range allocated for service data, using a control signal to determine if the frequency difference exceeds a threshold, allowing for reduced power consumption by adjusting the digital sampling rate and processing requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional broadband receivers process all bandwidth signals, then complete signal reception is achieved, but power consumption increases significantly
Solution Approach 1:
The receiver is divided into two operational modes: narrowband mode for low-speed services and broadband mode for high-speed services. The system segments the reception process based on service requirements, activating only the necessary processing components for each mode, thereby reducing power consumption while maintaining reception completeness.
Solution Approach 2:
The receiver dynamically switches between narrowband and broadband modes based on the frequency difference threshold of allocated subcarriers. This dynamic adaptation allows the system to adjust its processing load and power consumption in real-time according to actual service needs, resolving the contradiction between reliable reception and energy efficiency.
2Adaptability or versatility
If broadband processing is maintained for all services, then high data rate capability is preserved, but processing load increases unnecessarily
Solution Approach 1:
The system changes the processing parameters (bandwidth, sampling rate, FFT size) based on the service type. For low-speed services, narrowband parameters are used reducing processing load; for high-speed services, broadband parameters are activated. This parameter adaptation maintains data rate capability while avoiding unnecessary processing complexity.
3Use of energy by moving object
If narrowband mode is used for low-speed services, then power consumption is reduced, but frequency allocation flexibility is constrained
Solution Approach 1:
The base station provides feedback through control signals indicating the frequency difference of allocated subcarriers. The mobile terminal uses this feedback to determine whether to switch between narrowband and broadband modes. This feedback mechanism ensures that frequency allocation flexibility is maintained while enabling power-saving narrowband operation when appropriate.
Data Source
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AI summary
The present invention discloses a method for service data transmission, a receiver, a mobile terminal, a transmitter and a base station. In the above method, a receiver of a mobile terminal receives a control signal sent by a base station, wherein the control signal is used for indicating more than one subcarriers allocated to the mobile terminal and the more than one subcarriers are used for service data transmission; it is judged whether the difference between the highest frequency FREHigh and the lowest frequency FRELow in the more than one subcarriers exceeds a threshold value THB; if not exceed, then the receiver receives service data using a narrowband mode, otherwise receives the service data using a broadband mode. By way of the technical solution of the present invention, the signal bandwidth processed by the receiver can become narrow, the digital sampling rate becomes lower, the calculation amount of the FFT module and relevant storage are reduced, thus achieving the effect of reducing the power consumption overhead of the mobile terminal.