Numerology Multiplexing in 5G Common Downlink Resources
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems lack a solution for supporting different numerologies in the same frequency band, which is essential for diverse deployment scenarios and carrier frequencies, particularly in new radio systems like 5G.
Innovation Solution
The method involves transmitting information about multiple numerologies in common downlink transmission resources, such as Physical Broadcast Channel (PBCH), Primary Synchronization Signal (PSS), and Secondary Synchronization Signal (SSS), and multiplexing them in the same frequency band based on this information, using a serving node like a base station (BS) or a terminal device (UE).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different numerologies are multiplexed in the same frequency band, then the system can support diverse deployment scenarios and carrier frequencies, but inter-numerology interference occurs
Solution Approach 1:
The frequency band is segmented into different sub-bands, and each sub-band is assigned to a specific numerology. This segmentation allows different numerologies to coexist in the same frequency band without interfering with each other, as each numerology is confined to its designated sub-band portion.
Solution Approach 2:
A guard band is introduced as an intermediary element between different numerologies in the frequency domain. This guard band acts as a buffer that prevents direct interference between adjacent numerologies while still allowing them to multiplex within the same overall frequency band.
2Object-affected harmful factors
If guard band is introduced between multiplexed numerologies, then inter-numerology interference is reduced, but frequency efficiency is lowered
Solution Approach 1:
Instead of introducing a uniform guard band across the entire frequency band, the guard band is applied locally only at the boundaries between different numerologies in specific sub-bands. This localized approach reduces interference where needed while minimizing the overall impact on frequency efficiency.
3Loss of information
If numerology information is transmitted in common downlink transmission resource, then terminal devices can receive configuration information, but the common resource may become congested
Solution Approach 1:
The patent transmits numerology information not only in the traditional common downlink transmission resource but also utilizes downlink control information and other dimensions of the communication system. This multi-dimensional approach ensures that numerology configuration information is delivered to terminal devices without overloading a single common resource channel.
Data Source
AI summary
Embodiments of the present disclosure relate to methods and apparatuses of numerology multiplexing at a serving node and a terminal device in a wireless communication system. The method of numerology multiplexing comprises transmitting information about at least two numerologies in common downlink transmission resource, and multiplexing the at least two numerologies in a same frequency band based on the information about the at least two numerologies. With embodiments of the present disclosure, it is possible to enable the different numerologies to be multiplexed in the same band.