Wireless Terminal SyncAll Autonomous Synchronization
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Solution Overview
Problem
Existing wireless voice communication systems for multiple users on a single radio channel face challenges in maintaining continuous communication without a base or master terminal, leading to disruptions and the need for complex reconfiguration when terminals go out of range or lose signal.
Innovation Solution
A digital communication circuit using time division multiplexing with automatic synchronization, named 'SyncAll', allows terminals to synchronize internally without a master or base, ensuring continuous communication by re-synchronizing with any available terminal and prioritizing synchronization based on order numbers to prevent sub-network formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a master terminal is used to synchronize terminals in a wireless communication network, then synchronization is achieved, but the system becomes dependent on the master terminal and requires complex reconfiguration when the master is lost
Solution Approach 1:
Each terminal autonomously performs synchronization by selecting another terminal as reference when it cannot synchronize with the original master. The terminal independently determines its transmission time slot based on received frames from other terminals, eliminating the need for complex manual reconfiguration when the master is lost.
Solution Approach 2:
The synchronization reference is dynamically changeable. Terminals can switch from synchronizing with the master terminal to synchronizing with any other terminal in the network when the master is unavailable. This dynamic adaptation allows the network to maintain functionality without fixed hierarchical dependencies.
2Productivity
If multiple terminals transmit simultaneously on the same radio channel, then communication efficiency is improved, but signal collisions and synchronization issues occur
Solution Approach 1:
The system implements time division multiplexing where each terminal is assigned periodic transmission time slots based on its order number. Terminals transmit only during their assigned slots within each cycle, creating a periodic pattern that allows multiple terminals to share the radio channel efficiently without signal collisions.
Solution Approach 2:
The radio channel is segmented into discrete time slots for different terminals. Each terminal transmits in its specific time slot rather than continuously, dividing the communication resource temporally. This segmentation enables multiple terminals to communicate simultaneously on the same frequency without interference.
3Measurement precision
If terminals continuously transmit synchronization signals, then synchronization accuracy is improved, but radio frequency occupancy increases
Solution Approach 1:
Synchronization signals are transmitted periodically at specific time slots rather than continuously. Each terminal transmits its synchronization frame only during its assigned periodic interval, reducing overall radio frequency occupancy while maintaining sufficient synchronization accuracy for network operation.
Data Source
AI summary
A communication terminal having a digital communication circuit and an automatic synchronizer. The digital communication circuit utilizes time division multiplexing in a single radio channel, selectable in a frequency band. The terminal implements a wireless communication in a conference and hands-free mode on an autonomous network between at least two wearers of similar terminals. The automatic synchronizer synchronizes to the signal of other terminal in the group to synchronize its internal time reference. This ensures the continuity of communication between each terminal in the group within a range of each other, even when the communication is lost with other terminals in the group. No particular terminal is required to maintain the synchronization in the group.