PRACH Priority Allocation for Uplink Conflict and Coverage Control
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Solution Overview
Problem
Conflicts between multiple PRACH transmissions and other transmissions in wireless communication systems lead to increased system resource consumption, random access delays, poor PRACH transmission performance, and reduced coverage range, acting as a bottleneck for communication systems.
Innovation Solution
A method for a node in wireless communication that assigns priorities to PRACH transmissions based on their groups, carriers, and cells, allowing for power allocation and conflict resolution through predefined or network-configured priority orders, ensuring optimal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple PRACH transmissions are introduced to enhance coverage performance, then coverage range is improved, but conflicts with other transmissions increase
Solution Approach 1:
The patent segments PRACH transmissions into multiple transmission groups, where each group contains multiple PRACH transmissions with different priorities. This segmentation allows the system to manage conflicts by prioritizing certain transmissions over others, thereby maintaining coverage enhancement while reducing the impact of conflicts on overall system performance.
2Area of stationary object
If multiple PRACH transmissions are performed, then coverage performance is enhanced, but system resource consumption increases
Solution Approach 1:
The patent changes the priority parameter of different PRACH transmissions based on their transmission group assignments. By dynamically adjusting priority levels, the system can optimize resource allocation, ensuring that high-priority transmissions receive necessary resources while lower-priority transmissions consume fewer resources, thus enhancing coverage performance without excessive resource consumption.
3Area of stationary object
If multiple PRACH transmissions are implemented, then coverage range is expanded, but random access delay increases
Solution Approach 1:
The patent assigns priority levels to different PRACH transmission groups in advance, before actual transmissions occur. This preliminary prioritization allows the system to quickly determine which transmissions should be processed first during random access procedures, thereby reducing random access delay while maintaining expanded coverage range.
4Area of stationary object
If multiple PRACH transmissions are used, then coverage performance is improved, but PRACH transmission performance deteriorates
Solution Approach 1:
The patent introduces priority levels as an intermediary mechanism between multiple PRACH transmissions and system resources. This intermediary allows the system to manage PRACH transmission groups effectively, ensuring that high-priority transmissions maintain good performance while lower-priority transmissions can coexist without severely degrading overall PRACH transmission performance.
Data Source
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AI summary
Provided are a method for a node used for wireless communication and an apparatus. A first node used for wireless communication includes: a first transmitting set, configured to transmit at least one uplink transmission on a first transmission occasion. Each of the at least one uplink transmission is one of a plurality of candidate transmissions; a priority of each of the plurality of candidate transmissions is related to a first priority order; the first priority order is used to allocate power to the at least one uplink transmission; the plurality of candidate transmissions include a first PRACH transmission, and the first PRACH transmission belongs to one of a plurality of PRACH transmission groups; and a priority of the first PRACH transmission is related to a PRACH transmission group to which the first PRACH transmission belongs.