Control Channel Transmission Resource Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current communications technologies, such as 5G NR, face challenges in transmitting control channels efficiently due to limited time-frequency resources compared to 4G LTE, leading to potential interference from neighboring cells and suboptimal resource utilization.
Innovation Solution
A method for control channel transmission using N symbols and M physical resource blocks (PRBs), where the demodulation reference signal (DMRS) and uplink control information (UCI) are distributed across these resources, with specific spreading sequences to mitigate interference, and flexible distribution structures to maximize resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If control channel transmission uses limited time-frequency resources (N symbols and M PRBs) in 5G NR, then resource utilization efficiency is improved, but interference from neighboring cells increases
Solution Approach 1:
The control channel transmission is segmented into different components (DMRS and UCI) that are distributed across different PRBs within the available time-frequency resources. This segmentation allows for better interference management while maintaining efficient resource utilization.
Solution Approach 2:
The patent changes the transmission parameters by using specific spreading sequences and adjusting the distribution of DMRS and UCI across PRBs. These parameter changes enable the system to achieve both high resource utilization and interference mitigation simultaneously.
2Adaptability or versatility
If control channel transmission uses N symbols and M PRBs with DMRS and UCI distribution, then resource allocation flexibility is improved, but system complexity increases
Solution Approach 1:
The system employs dynamic resource allocation where the distribution of DMRS and UCI across PRBs can be flexibly configured based on channel conditions and traffic requirements. This dynamic approach provides adaptability while managing complexity through standardized procedures.
Solution Approach 2:
The control channel transmission mechanism is designed to be universal, supporting multiple configurations of N symbols and M PRBs. This multi-functionality allows the same basic framework to adapt to different scenarios without requiring separate complex systems for each case.
3Reliability
If spreading sequences are used to mitigate interference, then communication reliability is improved, but processing overhead increases
Solution Approach 1:
Spreading sequences are applied in advance to the DMRS and UCI before transmission. This preliminary action ensures that interference mitigation is built into the transmitted signal, improving reliability without requiring additional processing at the receiver beyond standard correlation operations.
Data Source
AI summary
A control channel transmission method, including receiving, by a first device, configuration information, where the configuration information indicates a time-frequency resource configured for a control channel, where the time-frequency resource comprises N symbols and M physical resource blocks (PRBs), where N is-greater than or equal to 1 and less than or equal to 12, where M is greater than or equal to 1, where the control channel comprises a demodulation reference signal (DMRS) and uplink control information (UCI), and where the M PRBs are contiguous or non-contiguous, and transmitting the DMRS on at least one of the N symbols using a target PRB, where the target PRB comprises at least one of the M PRBs.