Wireless Uplink Resource Mapping for Priority-Aware Signal Multiplexing
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively multiplexing control information and data of varying priorities, particularly in ensuring reliable transmission of high-priority information when combined in a single channel.
Innovation Solution
A method and device for wireless communication that determines resource mapping strategies based on the priority of control information and data, prioritizing high-priority information by mapping it proximal to Demodulation Reference Signals (DMRS) and using separate time-domain resources as needed, ensuring reliable transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If control information and data of various priorities are multiplexed into a same channel, then system efficiency is improved, but transmission reliability of high-priority information deteriorates
Solution Approach 1:
The patent applies local quality by assigning different mapping priorities to different types of information within the same channel. High-priority control information is mapped to specific time-domain resources with higher priority than low-priority data, creating localized quality differences in resource allocation that ensure critical information receives adequate protection while maintaining overall system efficiency
Solution Approach 2:
The patent segments the time-frequency resources into different priority levels. By dividing the available resources and assigning high-priority control information to specific segmented resources (with higher mapping priority) while low-priority data uses remaining resources, the system maintains both multiplexing efficiency and reliable transmission of critical information
2Device complexity
If modulation symbols are mapped without considering priority, then resource allocation is simple, but demodulation performance of high-priority information deteriorates
Solution Approach 1:
The patent changes the mapping parameter by introducing priority-based mapping priority values. Instead of uniform mapping, the system adjusts the mapping behavior based on the priority parameter of each information type, where high-priority control information receives higher mapping priority to be mapped closer to reference signals, thereby improving demodulation performance without excessive complexity
Data Source
AI summary
The present disclosure provides a method and a device in a node used for wireless communications. A first receiver receives a first signaling and a first signal group; and a first transmitter transmits a second signal in a first time-frequency resource, the second signal carrying a first bit block and first information; herein, the first bit block carries user data; the first signaling comprises scheduling information of the second signal; the first information comprises information indicating whether a signal in the first signal group is correctly received; the first time-frequency resource comprises a first time-domain resource; a first symbol set is composed of modulation symbol(s) generated by the first information, and a number of symbols comprised in the first symbol set mapped to the first time-domain resource is related to the priority of the first bit block and the priority of the first information.