Uplink Transmission Format Switching to Avoid Channel Conflicts
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Solution Overview
Problem
The two-step transmission format in wireless communication can introduce transmission conflicts due to differing patterns of uplink/downlink configurations, leading to inefficiencies and potential data loss.
Innovation Solution
Implementing a four-step transmission format by adjusting the timing of message parts to avoid conflicts, where the mobile station or wireless access node switches to the four-step format when conflicts are detected, ensuring proper alignment with uplink/downlink configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple channels are aggregated to increase transmission capacity, then data transmission efficiency is improved, but transmission conflicts occur between channels
Solution Approach 1:
The physical channel is segmented into multiple message parts (first message part, second message part, etc.) that can be transmitted in different time units. This segmentation allows the system to transmit data across multiple aggregated channels while avoiding conflicts by distributing message parts across different time resources, thus maintaining both high transmission efficiency and reliability.
Solution Approach 2:
The system dynamically determines transmission formats based on whether conflicts are detected in aggregated channels. When a conflict is detected in one channel, the system adaptively switches to alternative transmission formats or time units for other channels, enabling flexible resource allocation that maintains productivity while avoiding transmission conflicts.
2Productivity
If message parts are transmitted in different time units across aggregated channels, then transmission capacity is increased, but transmission timing coordination becomes complex
Solution Approach 1:
The system performs preliminary determination of transmission formats before actual transmission. The network device or terminal device pre-determines which time units and transmission formats to use for different message parts based on predicted conflict situations. This preliminary planning simplifies the coordination complexity by establishing transmission schedules in advance rather than making complex real-time decisions during transmission.
Solution Approach 2:
The system uses feedback mechanisms where transmission status information is exchanged between network devices and terminal devices. Based on this feedback about which channels experience conflicts, the system adjusts future transmission timing and format selections, progressively optimizing coordination without requiring complex centralized control for every transmission decision.
Data Source
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AI summary
This disclosure relates to wireless communication formats that avoid conflicts in message transmissions. In one implementation, conflicts are avoided by determining that transmitting the uplink message according to a first transmission format will result in a conflict, and responsively determining to transmit the uplink message according to a second transmission format. In another implementation, conflicts are avoided by waiting to transmit a message part until a next time unit of a physical channel that is not conflicted. In another implementation, conflicts are avoided by configuring time units of a second physical channel relative to time units of a first physical channel according to an uplink time unit offset.