Two-Way Radio Auxiliary Channel Intercom Mode
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Solution Overview
Problem
Existing two-way radio communication systems require intermediaries like repeaters or trunked systems to relay messages, which can be inefficient and cumbersome for direct communication between radios.
Innovation Solution
Incorporating two push-to-talk (PTT) devices in two-way radios, allowing one for conventional or trunked mode operation and another for intercom mode, enabling direct radio-to-radio communication on auxiliary channels without network elements, using frequencies like Bluetooth, WiFi, or cellular protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two-way radios use conventional or trunked communication systems with repeaters or system controllers, then communication reliability is improved through network infrastructure, but communication efficiency deteriorates due to intermediary relaying and channel assignment overhead
Solution Approach 1:
The communication system is segmented into two distinct modes: infrastructure-based mode (conventional/trunked) for reliable networked communication, and direct peer-to-peer mode for efficient local communication. The radio device can switch between these segments based on operational needs, allowing simultaneous optimization of both reliability and efficiency for different communication scenarios
Solution Approach 2:
The patent introduces an intermediary switch mechanism that determines whether communication should proceed through network infrastructure (repeater/system controller) or directly between radios. This intermediary control layer allows the system to dynamically select the optimal communication path, resolving the contradiction between reliability provided by intermediaries and efficiency achieved by bypassing them
2Length of stationary object
If two-way radios communicate through repeaters or trunked systems, then communication coverage is extended beyond line-of-sight, but communication time increases due to additional relaying steps
Solution Approach 1:
The communication path is made dynamic rather than fixed. The system can adaptively switch between indirect paths (through repeaters/trunked systems for extended coverage) and direct paths (peer-to-peer for local communication). This dynamic path selection allows the system to optimize for either coverage or time depending on the specific operational context
3Stability of the object's composition
If dedicated radio channels are assigned to specific groups in conventional systems, then communication stability is improved, but channel utilization deteriorates when channels remain idle
Solution Approach 1:
Radio channels are given multi-functionality: they can serve as dedicated group channels when stability is required, or be dynamically shared across multiple groups when utilization efficiency is prioritized. The direct communication mode allows channels to be universally accessible to any radio with the appropriate capability, eliminating the waste of dedicated idle channels while maintaining stability options when needed
Data Source
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AI summary
A method and apparatus for communicating amongst two-way radios is disclosed. The method includes operating a two-way radio 130 in either a trunked mode or conventional mode over an operating frequency and scanning an auxiliary channel by the two-way radio 130 to enable radio communication on the auxiliary channel while maintaining the operating frequency active. The radio 130 further detects a signal on the auxiliary channel with another radio 150 and communicating on the auxiliary channel in an intercom mode to provide an intercom radio-to-radio communication amongst all radios 130, 140 scanning on the auxiliary channel.