RedCap User Apparatus Mode Switching Across TDD and FDD Bands
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Reduced Capability (RedCap) devices face challenges in operating effectively in both TDD and FDD carrier bands due to bandwidth limitations, necessitating a mechanism to appropriately switch between these modes.
Innovation Solution
A user apparatus equipped with reception and selection means to receive bandwidth information from base stations and select between a first mode with limited capabilities and a second mode with unrestricted capabilities based on the bandwidth information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RedCap devices operate in TDD carrier bands with full capability, then communication performance is improved, but device complexity and power consumption increase beyond RedCap limitations
Solution Approach 1:
The patent applies dynamics by enabling the RedCap device to dynamically switch between operation modes (first mode with limited capability and second mode with full capability) based on bandwidth information received from base stations. This allows the device to adapt its capability level to match the operational requirements of different carrier bands, achieving full communication performance when needed while maintaining RedCap limitations when appropriate.
2Reliability
If RedCap devices operate in FDD carrier bands with full capability, then communication performance is improved, but bandwidth requirements exceed RedCap device specifications
Solution Approach 1:
The patent applies parameter changes by modifying the operation mode parameter of the RedCap device based on the bandwidth information received from base stations. When operating in FDD carrier bands, the device receives bandwidth information indicating whether full capability operation is supported, and accordingly changes its operation mode to either second mode (full capability) or first mode (limited capability), ensuring bandwidth requirements match device specifications.
3Adaptability or versatility
If RedCap devices switch between operation modes, then adaptability to different carrier bands is improved, but control complexity increases
Solution Approach 1:
The patent applies feedback by implementing a control mechanism where the RedCap device receives bandwidth information from base stations and uses this feedback to determine the appropriate operation mode. The device monitors the bandwidth information indicating whether the current carrier band supports full capability operation, and accordingly switches between first mode and second mode, creating a closed-loop control system that enhances adaptability while managing control complexity.
Data Source
AI summary
There is provided a user apparatus configured to receive bandwidth information from a first base station and a second base station, and select one of a first mode and a second mode as an operation mode by using the bandwidth information, in which the first mode is a mode in which a capability of the user apparatus is limited compared to a capability of a first other user apparatus connecting to the first base station, and the second mode is a mode in which the capability of the user apparatus is not limited compared to a capability of a second other user apparatus connecting to the second base station.