No-LBT Data Transmission with MCOT Release for Interference Control
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Solution Overview
Problem
In high-frequency wireless communication, the no-Listen-Before-Talk (no-LBT) channel access mechanism leads to continuous channel occupation by transmitters, causing sustained interference and other effects on neighboring nodes due to the lack of channel sensing before data transmission.
Innovation Solution
Implementing a method where channels are released when the Maximum Channel Occupy Time (MCOT) is reached, and a gap between data transmissions is monitored to ensure it meets a predetermined time length before occupying a second channel for transmission, thereby preventing continuous channel occupation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If no-Listen-Before-Talk channel access mechanism is used for data transmission in high-frequency wireless communication, then data transmission efficiency is improved, but continuous interference to neighboring nodes occurs
Solution Approach 1:
The patent implements periodic channel release by setting a maximum channel occupy time (MCOT) and forcing the transmitter to release the channel after this duration. This periodic action interrupts continuous transmission, allowing neighboring nodes to access the channel and reducing sustained interference while maintaining overall transmission efficiency.
Solution Approach 2:
The patent introduces feedback mechanisms where the transmitter monitors channel occupation duration and actively releases the channel when MCOT is reached. This feedback loop prevents unbounded continuous occupation and enables dynamic channel management that balances transmission efficiency with fair access for neighboring nodes.
2Speed
If transmitter continuously occupies channel for data transmission, then transmission speed is improved, but channel availability for other nodes deteriorates
Solution Approach 1:
The patent makes channel occupation dynamic by implementing mandatory release after MCOT and introducing gap monitoring before re-occupation. This dynamic approach allows the transmitter to adapt between continuous transmission (when gap > threshold) and channel release (when gap ≤ threshold), balancing transmission speed with channel availability for other nodes.
Solution Approach 2:
The patent performs preliminary checking of the time gap between current transmission end and next data transmission before deciding whether to re-occupy the channel. This preliminary action prevents immediate re-occupation that would cause continuous interference, allowing other nodes to access the channel when appropriate while maintaining fast re-occupation when safe.
3Adaptability or versatility
If maximum channel occupy time is enforced, then fair channel access is improved, but transmission continuity deteriorates
Solution Approach 1:
The patent maintains transmission continuity by allowing the transmitter to re-occupy the channel immediately if the time gap to next data transmission exceeds a threshold after MCOT. This ensures useful transmission action continues without unnecessary interruptions, while still enforcing fair access when gaps are small, thus balancing fair channel access with transmission continuity.
Data Source
AI summary
The present disclosure relates to the technical field of wireless communication, and provides data transmission methods and apparatuses, and electronic devices. The method is applicable in a no-Listen-Before-Talk (no-LBT) channel access scene over an unlicensed frequency band, and includes: in response to a Channel Occupy Time for a currently occupied first channel reaching a Maximum Channel Occupy Time (MCOT) of the first channel, releasing the first channel; in response to a data transmission instruction, obtaining a first gap between an estimated start moment of a data transmission and a release moment for the first channel; and in response to the first gap reaching a first predetermined time length, occupying a second channel for the data transmission.