Wireless Voice Transmission Controller for Channel Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, especially in simplex communication scenarios like Push to Talk (PTT), there is a challenge in ensuring quick and stable transmission of voice data when the communication channel is shared with another group or when the wireless communication device is outside the transmission enabled range of the base station, leading to potential delays and loss of transmission content.
Innovation Solution
A wireless communication device and base station system that includes a communication unit, storage, operation unit, communication quality measuring unit, and a controller. The controller manages the storage and communication unit based on transmission start and stop operations, measuring bit error rates, and determining whether to transmit all stored voice data or divided data based on channel availability and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission is disabled when the channel frequency is used by other wireless communication devices, then interference with other groups is avoided, but transmission content is lost or delayed
Solution Approach 1:
The system performs preliminary recording of transmission content in storage during periods when the channel is occupied by other groups. This allows the content to be captured in advance and transmitted later when the channel becomes available, preventing information loss while avoiding interference with ongoing communications.
Solution Approach 2:
The storage unit acts as an intermediary between the microphone and the communication unit. It temporarily holds transmission content when real-time transmission is not possible, mediating between the need to capture all speech content and the need to avoid channel interference.
2Productivity
If transmission is performed in shared channel frequencies, then transmission speed is improved, but communication stability deteriorates
Solution Approach 1:
The system dynamically switches between real-time transmission and recorded content transmission based on channel availability. The controller monitors whether the channel is currently used by other groups and adjusts the transmission mode accordingly, optimizing both speed and stability based on real-time conditions.
Solution Approach 2:
The system changes the transmission parameter from real-time to recorded content based on channel conditions. When the channel is available, it transmits at high speed; when occupied, it switches to recording mode, effectively changing the transmission state parameter to adapt to varying channel conditions.
3Productivity
If all stored voice data is transmitted at once, then transmission efficiency is improved, but communication quality deteriorates under poor channel conditions
Solution Approach 1:
The stored voice data is divided into multiple pieces and transmitted sequentially. This segmentation allows the system to monitor communication quality during transmission and handle failures more effectively, improving reliability while maintaining reasonable transmission efficiency.
Solution Approach 2:
The communication quality measuring unit provides feedback on bit error rates during transmission. Based on this feedback, the controller can adjust transmission behavior, stopping or resuming transmission of divided data pieces according to actual channel conditions, thereby maintaining communication quality.
Data Source
AI summary
A wireless communication device comprising a communication unit, a storage, an operation unit, a communication quality measuring unit, and a controller that controls the communication unit and the storage, wherein the controller further controls the storage to store, when the operation unit detects a transmission starting operation during every channel frequency is used by other wireless communication devices, the voice data until the operation unit detects a transmission stopping operation; controls the communication unit to transmit, when every channel frequency is not used and the bit error rate is smaller than a first threshold, all pieces of voice data that have not been transmitted, and to transmit, when every channel frequency is not used and the bit error rate is between the first threshold and a second threshold, a piece of divided data having a predetermined length from a head of the voice data which has not been transmitted.