NR Communication Device Frequency Switching for Mixed-Capability Terminals
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Solution Overview
Problem
Existing wireless access technologies struggle to efficiently multiplex terminal devices with different reception capabilities, limiting transmission efficiency in communication systems.
Innovation Solution
A communication device and method that enables flexible multiplexing of terminal devices with varying reception capabilities by using different parameter sets for downlink and uplink signals in NR cells, employing FDM, TDM, CDM, and SDM to optimize signal generation and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terminal devices with different reception capabilities are multiplexed, then transmission efficiency of the entire system is improved, but device complexity increases due to the need to manage multiple parameter sets
Solution Approach 1:
The base station device is designed to universally support multiple parameter sets (first parameter set and second parameter set) and can flexibly configure different terminal devices with appropriate parameter sets according to their reception capabilities. This multi-functionality allows the base station to handle both terminal types without requiring separate dedicated systems, thereby improving overall transmission efficiency while managing complexity through a unified architecture.
Solution Approach 2:
The parameter configuration is segmented into different sets (first parameter set for terminal type A, second parameter set for terminal type B) that can be independently managed and assigned. This segmentation allows the base station to optimize parameters for each terminal type's specific reception capabilities while maintaining a structured approach to complexity management through organized parameter groups.
2Adaptability or versatility
If flexible reception capabilities are designed for terminal devices, then adaptability is improved, but device complexity increases due to multiple parameter sets
Solution Approach 1:
Terminal devices are designed with the capability to support multiple parameter sets that can be configured based on their reception capabilities. The devices can adaptively switch between different parameter sets (first parameter set or second parameter set) depending on the base station's configuration, enabling flexible reception capabilities while managing complexity through standardized parameter configurations that are externally controlled by the base station.
Data Source
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AI summary
A communication device, comprising: a control unit configured to set a first frequency band and a second frequency band, the second frequency band having at least one of a bandwidth or a subcarrier spacing which is different from the first frequency band; and a communication unit configured to perform wireless communication using either one of the first frequency band or the second frequency band, and switch from first wireless communication using the first frequency band to second wireless communication using the second frequency band based on an instruction of Physical Downlink Control Channel, PDCCH. The first wireless communication is performed using the first frequency band in an initial access.