Terminal Device Frequency Band Determination for Low Bandwidth NR Systems
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Solution Overview
Problem
Terminal devices with low bandwidth capabilities in NR systems experience low data transmission efficiency due to their limited bandwidth capabilities compared to the higher bandwidth requirements in some research scenarios.
Innovation Solution
A data transmission method and apparatus that allows a terminal device with a low bandwidth capability to determine a first frequency band with a larger bandwidth than its maximum channel bandwidth, and to transmit data within a dynamically scheduled first transmission frequency band indicated by a network device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If terminal devices with low bandwidth capability operate in NR systems, then device cost is reduced, but data transmission efficiency deteriorates
Solution Approach 1:
The patent implements dynamic bandwidth adaptation by allowing terminal devices to switch between different bandwidth parts (BWPs) based on service requirements. The network can dynamically configure and switch BWPs for terminal devices, enabling low-bandwidth devices to access larger frequency resources when needed, thus improving data transmission efficiency without permanently increasing device complexity or cost
Solution Approach 2:
The patent divides the carrier bandwidth into multiple bandwidth parts (BWPs), each with different bandwidth characteristics. Terminal devices can be configured with multiple BWPs and switch between them based on service requirements. This segmentation allows low-bandwidth devices to use smaller BWPs for cost-effective operation while still having access to larger BWPs when high data transmission efficiency is required
2Productivity
If terminal devices use larger bandwidth capability, then data transmission efficiency is improved, but device cost increases
Solution Approach 1:
The patent makes bandwidth parts universal by designing them to support multiple functions and services. The same BWP infrastructure serves both low-bandwidth and high-bandwidth requirements, allowing terminal devices to flexibly access appropriate bandwidth resources based on service needs without requiring dedicated hardware for each bandwidth capability level
Solution Approach 2:
The patent changes the bandwidth parameter dynamically through BWP configuration and switching. Instead of fixed bandwidth capabilities, terminal devices can adjust their effective bandwidth by switching between pre-configured BWPs with different bandwidth parameters, allowing optimization of data transmission efficiency without permanently increasing device cost
3Device complexity
If terminal devices are not specially designed based on bandwidths, then device complexity is reduced, but data transmission efficiency deteriorates
Solution Approach 1:
The patent enables terminal devices to self-adjust their bandwidth usage by switching between pre-configured bandwidth parts based on service requirements and network indications. The devices don't need complex specialized designs for different bandwidth capabilities, but can dynamically adapt their bandwidth usage through BWP switching, maintaining low device complexity while improving data transmission efficiency when needed
Data Source
AI summary
A data transmission method and apparatus are provided. The method includes: A terminal device determines a first frequency band, receives first information from a network device, where the first information is used to indicate a first transmission frequency band, determines the first transmission frequency band based on the first information, and transmits data to the network device in the first transmission frequency band. A bandwidth of the first frequency band is greater than a maximum channel bandwidth supported by the terminal device. The first transmission frequency band is used by the terminal device to transmit data. The first frequency band includes the first transmission frequency band.