Intercom Group Audio Mixing for Shared Timeslot Communication
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Solution Overview
Problem
Existing wireless intercom systems are limited by the number of users they can support due to the allocation of separate uplink and downlink timeslots for each terminal, leading to low timeslot utilization and increased power consumption, which restricts the number of intercom terminals and reduces battery endurance.
Innovation Solution
The system divides intercom terminals into talk groups, performing audio mixing for all terminals in a group through one downlink timeslot and allowing each terminal to perform audio elimination to exclude its own signal, thereby sharing timeslots and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each intercom terminal occupies separate uplink and downlink timeslots, then full-duplex communication is ensured, but the number of supported terminals is limited
Solution Approach 1:
The patent merges the audio mixing function for multiple terminals into a single downlink timeslot. Instead of allocating separate downlink timeslots to each terminal, the system combines all terminal audio signals, performs mixing at the base station, and broadcasts the mixed signal to all terminals simultaneously, thereby reducing the total timeslot requirements and increasing the number of supported terminals.
Solution Approach 2:
The base station acts as an intermediary that receives audio signals from multiple terminals, performs audio mixing processing, and then distributes the mixed signal to all terminals. This intermediary function allows multiple terminals to share communication resources efficiently without requiring separate dedicated timeslots for each terminal.
2Reliability
If each intercom terminal occupies separate downlink timeslots, then communication quality is maintained, but power consumption increases
Solution Approach 1:
The patent combines multiple downlink transmissions into a single broadcast timeslot. Instead of the base station transmitting separate audio signals to each terminal individually, it transmits one mixed audio signal that contains information for all terminals, significantly reducing the total transmission time and energy consumption.
Solution Approach 2:
The single downlink timeslot serves multiple functions simultaneously - it delivers audio information to all terminals in the system. This universal broadcast approach replaces multiple dedicated transmissions, improving energy efficiency while maintaining communication quality through proper audio mixing and signal distribution.
Data Source
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AI summary
Embodiments of the present description provide a call system, a call host, and a call terminal. The call system comprises a call host and a plurality of call terminals. The plurality of call terminals are grouped into one or more call groups; at least some call terminals among the plurality of call terminals are configured to acquire voice signals of users and send the voice signals to the call host; the call host is configured to perform, for each call group, voice mixing processing on the voice signals sent by the call terminals in the call group, to obtain a mixed signal and send the mixed signal to each call terminal in the call group; at least some of the call terminals are further configured to perform silencing processing on the received mixed signal, so as to eliminate the voice signals acquired by said call terminals, and play the mixed signal that has undergone the silencing processing. The method can improve the utilization rate of communication time slots, increase the number of call terminals in the call system, and in addition, reduce the power consumption of the call host.