Terminal Device Frame Structure Switching for 10 GHz Bandwidth
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Solution Overview
Problem
Current methods for increasing wireless traffic bandwidth, such as carrier aggregation in LTE/LTE-Advanced, are limited to a maximum of 100 MHz, restricting further expansion of wireless traffic capacity.
Innovation Solution
Implementing a terminal device and base station apparatus capable of communicating using a second frame structure with a frequency band of 10 GHz or more, which includes a higher layer processing unit for determining and managing the communication of signals across these wider bands, and a reception unit for receiving signals in the terminal device and transmission unit for transmitting signals in the base station apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If carrier aggregation with maximum 20 MHz per component carrier and maximum 5 component carriers is used, then the system is compatible with existing LTE/LTE-Advanced standards, but the total bandwidth is limited to maximum 100 MHz
Solution Approach 1:
The patent introduces dynamic switching capability between first frame structure (for bands below 10 GHz) and second frame structure (for bands of 10 GHz or more). The base station and terminal device can adaptively select the appropriate frame structure based on the frequency band being used, enabling flexible bandwidth expansion beyond the fixed 100 MHz limit of traditional carrier aggregation while maintaining compatibility with existing standards.
2Area of stationary object
If a second frame structure is introduced for frequency bands of 10 GHz or more, then wider bandwidth communication is enabled, but the device complexity increases due to supporting multiple frame structures
Solution Approach 1:
The patent designs the terminal device and base station to universally support both first frame structure and second frame structure within the same device. This multi-functionality allows a single device to operate across different frequency bands (below and above 10 GHz) using the appropriate frame structure, avoiding the need for separate devices and reducing overall system complexity despite supporting multiple frame formats.
Solution Approach 2:
The higher layer processing unit determines in advance whether to instruct communication using the second frame structure based on the frequency band configuration. By making this determination beforehand through higher layer signaling, the system prepares the terminal device and base station for the appropriate frame structure before actual data transmission begins, reducing runtime complexity and enabling smooth transitions between frame structures.
3Adaptability or versatility
If higher layer processing is used to determine and manage second frame structure communication, then frequency band adaptability is improved, but the processing overhead increases
Solution Approach 1:
The higher layer processing unit determines whether to instruct communication using the second frame structure in advance, before actual data transmission begins. This preliminary determination through higher layer signaling (such as RRC configuration) allows the system to prepare the appropriate frame structure and parameters beforehand, reducing runtime processing overhead and enabling faster adaptation to different frequency bands without significant time loss during active communication.
Data Source
AI summary
A terminal device uses a broad band to improve a throughput. A terminal device communicates with a base station apparatus, and includes a higher layer processing unit that receives an instruction from the base station apparatus to perform communication according to a first frame structure used in a prescribed carrier frequency band or to perform communication according to a second frame structure used in a carrier frequency band higher than the prescribed carrier frequency band, and a reception unit that receives a signal of the first frame structure in a case where it is instructed to perform the communication according to the first frame structure, and receives a signal of the second frame structure in a case where it is instructed to perform the communication according to the second frame structure.