Multi-Service Receiver Interference Control via Signal Strength
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Solution Overview
Problem
Existing multi-service mobile terminals face interference issues when operating multiple wireless services with overlapping or closely situated frequency bands, such as DVB-H and cellular services, due to insufficient antenna isolation and interference from cellular transceiver operations.
Innovation Solution
A method and device that utilize signal strength measurements to control the operation of cellular transceivers, enabling or limiting their operation based on the signal strength of DVB-H reception, thereby minimizing interference without the need for additional filters or power amplifier enhancements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If antenna isolation is increased between different services, then interference between services is reduced, but device complexity and size increase
Solution Approach 1:
The patent implements dynamic control of cellular transceiver operation based on real-time DVB-H signal strength measurements. The system transitions from static antenna isolation design to dynamic operational control, where the transceiver is enabled or limited based on measured signal conditions, eliminating the need for complex physical isolation structures.
Solution Approach 2:
The patent changes the operational state parameter of the cellular transceiver based on DVB-H signal strength measurements. By monitoring signal strength and adjusting transceiver operation accordingly, the system achieves interference reduction through parameter control rather than physical design changes.
2Object-affected harmful factors
If filtering is increased in cellular transmitter, then interference to DVB-H reception is reduced, but power consumption and device size increase
Solution Approach 1:
The patent extracts the interference control function from the cellular transmitter hardware and relocates it to the control system. Instead of using filters within the transmitter, the system controls transmitter operation based on external signal strength measurements, removing the need for additional filtering components.
Solution Approach 2:
The patent implements a feedback mechanism where DVB-H signal strength measurements are continuously monitored and used to control cellular transceiver operation. This closed-loop control system adjusts transmitter operation based on real-time conditions, replacing the need for passive filtering components.
3Reliability
If power amplifier performance is increased, then cellular transmission quality is improved, but manufacturing costs and device complexity increase
Solution Approach 1:
The patent implements dynamic control of power amplifier operation based on signal strength measurements. Instead of using high-performance power amplifiers continuously, the system adjusts power amplifier operation dynamically, enabling it only when DVB-H signal strength indicates interference is not an issue, thereby reducing manufacturing costs while maintaining transmission quality when needed.
Data Source
AI summary
A method for operating a receiver and a device are provided. The device comprises a first and a second antenna, a receiver operationally coupled to the first antenna and a transceiver operationally coupled to the second antenna. The receiver receives information in bursts on a first band of radio frequencies. A controller of the device measures signal strength of the information received with the receiver, compares the measured signal strength to a reference value and enables operation of the transceiver if the measured signal strength is above the reference value, and limits operation of the transceiver during reception of the bursts if the measured signal strength is below the reference value.