User Terminal BWP Switching for Radio Throughput
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Solution Overview
Problem
Current radio communication systems, such as LTE, face challenges in improving throughput by utilizing partial frequency bands for downlink (DL) and uplink (UL) communications, which is essential for future radio communication systems like NR.
Innovation Solution
A user terminal is designed to receive downlink control information using a first partial frequency band and identify resources in a second partial frequency band through a resource allocation field, allowing for efficient allocation and switching between different bandwidth parts (BWPs) configured in a carrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a user terminal monitors downlink control information in multiple bandwidth parts, then the adaptability and versatility of the communication system is improved, but the power consumption and processing load increase
Solution Approach 1:
The patent divides the carrier bandwidth into multiple bandwidth parts (BWPs), allowing the user terminal to monitor control information in only one BWP at a time rather than the entire carrier bandwidth. This segmentation enables the terminal to switch between BWPs based on data transmission needs, reducing power consumption while maintaining adaptability.
Solution Approach 2:
The patent implements dynamic BWP switching where the user terminal can transition between different bandwidth parts based on scheduling requirements. The terminal monitors control information in an active BWP and can switch to another BWP when data transmission is scheduled, optimizing the balance between adaptability and power consumption.
2Measurement precision
If the resource allocation field size is configured based on a given BWP, then the manufacturing precision and measurement precision are improved, but the device complexity increases
Solution Approach 1:
The patent configures the resource allocation field size based on the specific characteristics of each bandwidth part. The resource allocation precision is optimized locally for each BWP rather than using a uniform configuration across the entire carrier, improving resource identification accuracy while managing complexity through localized optimization.
Solution Approach 2:
The patent dynamically adjusts the resource allocation field size parameter based on the active BWP configuration. When switching between BWPs, the resource allocation field size is reconfigured to match the specific BWP requirements, maintaining precision while allowing flexible parameter adaptation.
Data Source
AI summary
The present invention is designed to improve the throughput of radio communication by using partial frequency bands for DL/UL communication. A user terminal has a receiving section that receives downlink control information by using a first partial frequency band (BWP) among a plurality of BWPs configured in a carrier, and a control section that identifies, via a resource allocation field (RA field) having a size that is configured based on a given BWP among the plurality of BWPs, a resource of a second BWP, which is different from the first BWP, in the downlink control information.