Priority-Aware Control-Channel Multiplexing for Overlapping Feedback
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Solution Overview
Problem
Existing wireless communication systems face challenges in multiplexing high priority and low priority channels in the time domain without degrading the reliability and delay of high priority services, leading to performance issues in low priority services due to channel dropping.
Innovation Solution
A method for multiplexing high priority and low priority feedback messages by determining if multiplexing is allowed, and if so, using specific resource indicators and cyclic shift values to transmit the combined messages on appropriate channels, ensuring high priority service reliability while maintaining low priority service quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high priority and low priority channels are multiplexed in the time domain, then channel utilization is improved, but the reliability and delay of high priority services may be degraded
Solution Approach 1:
The patent segments the feedback messages into high priority and low priority categories, and further divides the transmission resources into dedicated high priority resources and shared resources. By segmenting the transmission process, the system can ensure high priority messages receive dedicated resources with guaranteed reliability, while low priority messages share remaining resources, thus resolving the contradiction between channel utilization and high priority service reliability.
Solution Approach 2:
The patent applies local quality by providing different transmission qualities to different priority levels. High priority channels receive dedicated resources with guaranteed quality parameters (reliability and delay), while low priority channels share resources with best-effort quality. This localized differentiation allows the system to maintain high priority service reliability while improving overall channel utilization through low priority channel sharing.
2Reliability
If high priority feedback messages are transmitted with guaranteed reliability, then service quality is improved, but channel resources are wasted when no transmission is needed
Solution Approach 1:
The patent implements dynamic resource allocation where the network dynamically determines whether to allocate dedicated high priority resources based on actual transmission needs. When high priority feedback messages are present, dedicated resources are allocated to ensure reliability. When no high priority messages need transmission, the system can flexibly allocate resources to low priority channels or other purposes, thus avoiding resource waste while maintaining service quality when needed.
3Reliability
If low priority channels are dropped when overlapping with high priority channels, then high priority service reliability is maintained, but low priority service quality deteriorates
Solution Approach 1:
The patent merges the transmission of high priority and low priority feedback messages into a unified shared channel resource. Instead of dropping low priority channels when they overlap with high priority channels, the system combines both types of messages and transmits them together on shared resources. This merging approach allows both high and low priority services to coexist, maintaining high priority reliability through dedicated resource allocation when needed while preserving low priority service quality through shared resource utilization.
Data Source
AI summary
Techniques are described for multiplexing content that overlap in time domain on at least two channels. An example wireless communication method includes performing a first determination, by a communication node, that a high priority feedback message to be transmitted on a control channel overlaps in time domain with a low priority feedback message to be transmitted on the control channel; performing a second determination, by the communication node, whether a multiplexing operation between the high priority feedback message and the low priority feedback message is allowed; and transmitting, in response to the first determination and in response to determining that the multiplexing operation is allowed, a multiplexed information in a resource in the control channel.