Initial BWP Configuration for NR-Light Cell Access Compatibility
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Solution Overview
Problem
The introduction of NR-light type terminal devices in NR R17 requires lower equipment cost and complexity, but existing technologies struggle to accommodate their low bandwidth and reduced capabilities while maintaining compatibility with traditional eMBB type devices, particularly in NR cell access and initial BWP configuration.
Innovation Solution
A BWP configuration method where a network device sends initial BWP configuration information associated with terminal types and capabilities, allowing terminal devices to select and reside on appropriate initial BWPs, ensuring compatibility and efficient access for both NR-light and traditional devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If bandwidth and antenna are reduced for NR-light terminal devices, then equipment cost and complexity are lowered, but coverage and reliability may be compromised
Solution Approach 1:
The patent segments the initial BWP configuration into multiple pieces, each associated with different terminal types and capabilities. NR-light terminal devices receive and select from a subset of configurations optimized for their reduced bandwidth and antenna capabilities, while eMBB devices receive full configurations. This segmentation allows each device type to operate with appropriate complexity levels without compromising the reliability of either group.
Solution Approach 2:
The patent applies local quality by providing different BWP configuration qualities to different terminal types. NR-light devices receive simplified configurations with reduced bandwidth parameters and antenna requirements, while eMBB devices receive full-featured configurations. Each device type operates with the locally optimized configuration suited to its capabilities, resolving the contradiction between reduced complexity and maintained reliability.
2Adaptability or versatility
If multiple pieces of initial BWP configuration information are provided for different terminal types, then adaptability to different terminal capabilities is improved, but configuration complexity and resource overhead increase
Solution Approach 1:
The patent implements dynamic configuration selection where terminal devices dynamically choose the appropriate BWP configuration based on their terminal type and capability indicators. The network device dynamically provides different configuration sets to different device types, and terminals dynamically select and apply the matching configuration. This dynamic approach enables high adaptability while keeping the actual configuration complexity low for each individual device.
Solution Approach 2:
The patent changes key parameters of the BWP configuration based on terminal type, including bandwidth size, subcarrier spacing, and antenna port configurations. By parameterizing the configuration to match terminal capabilities, the system achieves high adaptability across different device types while maintaining manageable complexity through standardized parameter sets for each terminal category.
3Ease of manufacture
If NR-light terminal devices use reduced bandwidth and antennas, then equipment cost decreases, but the ability to meet reliability and latency requirements in industrial scenarios deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-configuring optimized BWP parameters specifically for NR-light terminal devices before deployment. The network device pre-calculates and provides appropriate bandwidth and resource allocation configurations that are tailored to the reduced hardware capabilities of NR-light devices. This preliminary optimization ensures that even with reduced bandwidth and antennas, the devices can meet industrial reliability and latency requirements through pre-optimized resource allocation.
Data Source
AI summary
Provided are a BWP configuration method and apparatus, a terminal device, and a network device. The method comprises : a terminal device receiving first configuration information sent by a network device, wherein the first configuration information comprises a plurality of pieces of initial BWP configuration information, and each piece of initial BWP configuration information in the plurality of pieces of initial BWP configuration information is associated with one terminal type and/or terminal capability; and the terminal device selecting first initial BWP configuration information from among the plurality of pieces of initial BWP configuration information on the basis of the first configuration information, and residing on a first initial BWP on the basis of the first initial BWP.