Wireless Uplink Format Switching for Resource Conflict Avoidance
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Solution Overview
Problem
Wireless communication networks face conflicts in message transmissions due to the potential overlap of transmission resources, particularly when using a two-step transmission format that reduces back-and-forth transmissions and wait times, leading to inefficiencies and communication disruptions.
Innovation Solution
Implementing a flexible transmission format that allows mobile stations and wireless access nodes to switch between a two-step and four-step transmission format based on conflict detection, adjusting transmission timing, and utilizing different physical channels to avoid resource conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a two-step transmission format is used to reduce back-and-forth transmissions and wait times, then communication speed and efficiency are improved, but transmission conflicts occur due to resource overlap
Solution Approach 1:
The patent implements dynamic transmission format selection, allowing the mobile station to switch between two-step and four-step transmission formats based on real-time conflict detection. When conflicts are detected in the two-step format, the system dynamically transitions to the four-step format, making the transmission process adaptive and flexible rather than static.
Solution Approach 2:
The patent changes the transmission format parameter from fixed to variable. By allowing switching between different transmission formats (two-step vs. four-step) based on conflict conditions, the system modifies the transmission parameters dynamically to resolve conflicts while maintaining communication efficiency.
2Productivity
If transmission resources are allocated on a contention-based random access basis, then network resource utilization is improved, but transmission conflicts arise from resource overlap
Solution Approach 1:
The patent implements a feedback mechanism where the mobile station detects transmission conflicts and uses this information to adjust subsequent transmission behavior. The conflict detection result feeds back into the transmission format selection process, allowing the system to adapt resource allocation dynamically based on actual transmission conditions.
Solution Approach 2:
The patent introduces an intermediary conflict detection and resolution mechanism between the mobile station and network. This intermediary process evaluates transmission conditions and mediates the selection of appropriate transmission formats, preventing direct resource conflicts while maintaining efficient resource utilization.
3Reliability
If the mobile station waits for the next time unit to transmit the second message part, then transmission conflicts are avoided, but transmission delay increases
Solution Approach 1:
The patent makes the transmission timing dynamic by allowing the mobile station to choose between immediate transmission (when no conflict exists) and delayed transmission (when conflict is detected). This dynamic timing adjustment optimizes both conflict avoidance and delay minimization based on real-time conditions.
Solution Approach 2:
The patent utilizes periodic transmission opportunities on the second physical channel, where the mobile station can attempt transmission at regular intervals. If a conflict is detected, the system waits for the next periodic opportunity, balancing conflict avoidance with minimized waiting time through structured periodic retries.
Data Source
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.