Resource Mapping for Multi-Numerology 5G Communication Devices
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Solution Overview
Problem
In 5G systems, different frequency bands within a carrier use varying subcarrier spacings, posing a challenge for effective physical resource mapping.
Innovation Solution
A method for resource mapping is developed, where a unit time domain resource is determined based on the minimum subcarrier spacing, and data is mapped sequentially across multiple unit time domain resources in chronological order, using preset mapping rules such as frequency ascending order, cutoff time, or subcarrier spacing order.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different basic parameter sets (numerologies) are used in different frequency bands within one carrier, then the system can support multiple subcarrier spacings and cyclic prefix lengths, but the physical resource mapping becomes complex and difficult to manage
Solution Approach 1:
The time domain resource is segmented into multiple unit time domain resources, each corresponding to a specific subcarrier spacing. This segmentation allows independent mapping and management of different numerologies without interfering with each other, thereby reducing the overall mapping complexity while maintaining support for multiple subcarrier spacings.
Solution Approach 2:
The patent introduces a new dimension of organization by grouping resources according to subcarrier spacing rather than traditional frequency or time alone. This dimensional reorganization simplifies the mapping process by creating distinct layers that can be independently handled, thus reducing complexity while preserving adaptability.
2Speed
If resource mapping is performed sequentially in multiple unit time domain resources, then fast demodulation can be achieved at the receiving end, but the mapping process requires precise control of mapping rules and chronological order
Solution Approach 1:
The mapping rules and chronological order are predetermined and configured in advance before the actual resource mapping occurs. This preliminary setup eliminates the need for complex real-time control decisions during mapping, enabling fast sequential processing while maintaining manageable control complexity through pre-defined protocols.
Solution Approach 2:
The sequential mapping process maintains continuous progress through multiple unit time domain resources without interruption or backtracking. This continuous action pattern enables efficient demodulation at the receiving end while the predetermined mapping rules ensure that the complexity of controlling the sequence remains manageable through standardized procedures.
Data Source
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AI summary
Disclosed are a resource mapping method and a communication device. Time-frequency resources for transmitting current data include a plurality of frequency bands, and sub-carrier spacings corresponding to the plurality of frequency bands are at least in part different. The method include: determining (S410) a unit time domain resource for resource mapping, a length of the unit time domain resource being equal to a symbol length corresponding to a minimum subcarrier spacing of the plurality of frequency bands; and performing (S420) resource mapping on the data in a plurality of unit time domain resources for transmitting the data according to a chronological order, wherein the resource mapping performed in each of the plurality of unit time domain resources is performed based on a preset mapping rule.