Data Transmission Method Resolving Hidden Terminal Interference
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Solution Overview
Problem
In communications technologies, user equipment (UE) often experiences interference jitter due to hidden terminal problems (HTPs) when network devices fail to detect nearby network devices, leading to interference from other network devices using shared communication channels.
Innovation Solution
A method and device for data transmission where a feedback request is sent to UE to feed back channel indication data, indicating channel occupancy, allowing the network device to perform data transmission within a specified time without interference from other devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If network devices use shared communication channels for data transmission, then communication efficiency and resource utilization are improved, but interference from other network devices occurs causing hidden terminal problems
Solution Approach 1:
The patent implements a feedback mechanism where the UE sends channel indication data back to the network device to inform about channel occupancy status. This feedback allows the network device to adjust its transmission strategy based on real-time channel conditions, preventing interference while maintaining shared channel usage for improved communication efficiency.
Solution Approach 2:
The patent uses preliminary action by having the UE send channel indication data before the network device performs data transmission. This advance information about channel occupancy allows the network device to plan its transmission timing accordingly, preventing interference issues before they occur while still utilizing shared channels efficiently.
2Adaptability or versatility
If network devices fail to detect nearby network devices due to signal penetration loss, then device deployment flexibility is improved, but hidden terminal problems occur causing interference jitter
Solution Approach 1:
The patent introduces the UE as an intermediary that detects channel occupancy conditions and relays this information to the network device. This intermediary role allows the network device to be flexible in deployment (not needing direct detection capability) while maintaining reliable communication through the UE's channel status feedback.
Solution Approach 2:
The patent replaces the mechanical/direct detection system (network device directly sensing other devices) with an information-based system (UE reporting channel status). This substitution allows greater deployment flexibility since network devices don't need direct line-of-sight detection capability, while maintaining reliability through the information feedback mechanism.
3Reliability
If the network device sends feedback requests to UE for channel indication data, then interference jitter is prevented improving communication reliability, but device complexity and signaling overhead increase
Solution Approach 1:
The patent implements self-service by having the UE autonomously monitor and report channel indication data without requiring complex network device intervention. The UE independently performs channel status assessment and feedback, reducing the signaling overhead and complexity on the network device side while maintaining high communication reliability.
Data Source
AI summary
Embodiments relate to a data transmission method and device. A feedback request is sent by a first device to user equipment that instructs the user equipment to feed back channel indication data to a network device. The channel indication data indicates that a channel is occupied by the first device within a time that corresponds to the channel indication data. The network device includes the first device and one additional device. The first device receives the channel indication data sent by the UE. The first device performs data transmission with the UE using the channel within the time that corresponds to the channel indication data.