Relay Mode Switching for Analog-Digital Coexistence
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing relay systems managing coexistence of analog and digital terminals in professional radiocommunication systems require significant computing power and do not effectively reduce collisions between digital and analog signals, making them complex and inefficient.
Innovation Solution
A relay system capable of operating in both digital and analog modes, defaulting to digital mode, with recurring steps for searching analog activity, switching between modes based on detected activity, and returning to digital mode when criteria are met, including interrupting beacon channels and adjusting signal processing intervals to minimize collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the relay continuously and simultaneously performs both analog and digital activity search, then it can detect both analog and digital terminals, but it requires significant computing power and increases device complexity
Solution Approach 1:
The relay dynamically switches between digital and analog operating modes based on detected activity, rather than continuously performing both analog and digital searches simultaneously. This dynamic adaptation reduces computing power requirements while maintaining the ability to serve both analog and digital terminals.
Solution Approach 2:
The relay performs analog activity searches periodically during digital mode operation, and switches to analog mode when analog activity is detected. This periodic approach to mode switching reduces the continuous computing burden while ensuring both terminal types can be detected and served appropriately.
2Adaptability or versatility
If the relay simultaneously exchanges signals with digital and analog terminals, then it supports coexistence, but it does not reduce collisions between digital and analog signals
Solution Approach 1:
The relay dynamically switches between digital and analog modes based on detected activity, creating time-separated operation periods for each mode. This dynamic time-division approach prevents simultaneous digital and analog signal transmission, thereby reducing collisions while maintaining coexistence capability.
Solution Approach 2:
The relay segments operation into distinct digital mode periods and analog mode periods. During digital mode, only digital terminals are served; during analog mode, only analog terminals are served. This temporal segmentation eliminates signal collisions by ensuring only one protocol type is active at any given time.
3Adaptability or versatility
If the relay defaults to digital mode and interrupts digital mode upon detecting analog activity, then it prioritizes digital terminals, but it may reduce availability for digital terminals during extended analog transmissions
Solution Approach 1:
The relay implements dynamic mode switching with automatic return to digital mode when analog activity ceases or after a maximum duration is reached. This dynamic behavior ensures digital terminal availability is restored after analog transmissions, balancing adaptability with reliability for digital terminals.
Solution Approach 2:
The relay monitors analog activity continuously and uses this feedback to determine when to switch back to digital mode. When analog activity stops or exceeds maximum duration, the relay switches back to digital mode, ensuring digital terminal availability is maintained. This feedback mechanism balances the needs of both terminal types.
Data Source
Figure 1~2
Figure 3a~3c
Figure 4~5b
AI summary
The invention relates to an operating method for a relay (20) of a professional radiocommunication system (10) which is suitable for operating in two modes: a digital operation mode, used by default, in which said relay exchanges digital signals with one or more digital terminals (30a), and an analogue operating mode in which said relay exchanges analogue signals with one or more analogue terminals (30b). The method comprises a recurring step (50) of searching for analogue activity, a step (51) of switching to the analogue operating mode, executed when analogue activity is detected, the digital operating mode being interrupted when the relay (20) is in analogue operating mode, and a step (52) of returning to the digital operating mode, executed when an analogue inactivity criterion is fulfilled and/or after a maximum predefined time of interruption of the digital operating mode. The present invention also relates to a relay (20).