RedCap Downlink BWP Switching for Lower Power Handover
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing power consumption and bandwidth efficiency for reduced capability (RedCap) terminals, particularly in scenarios where these terminals are not configured with default or initial downlink bandwidth parts, leading to increased power consumption when operating on larger bandwidths.
Innovation Solution
Implementing a method to determine whether to start or restart an inactivity timer based on the configuration situation of default and initial downlink bandwidth parts and the current downlink bandwidth part used by RedCap terminals, allowing for efficient handover to smaller bandwidths to reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RedCap terminals operate on larger bandwidths to maintain communication performance, then communication quality is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic bandwidth part switching, allowing the terminal to transition between different bandwidth configurations based on communication needs. The terminal switches to larger bandwidth parts when high data rates are required and returns to smaller bandwidth parts during idle or low-activity periods, optimizing the balance between communication performance and power consumption through time-varying bandwidth allocation.
Solution Approach 2:
The patent changes the bandwidth parameter of the operating bandwidth part based on communication state. By configuring multiple bandwidth parts with different sizes and dynamically selecting which one to use, the system adjusts the bandwidth parameter to match communication requirements, thereby reducing power consumption during low-activity states while maintaining performance when needed.
2Device complexity
If RedCap terminals are configured with default or initial downlink bandwidth parts, then bandwidth management is simplified, but device complexity increases when multiple bandwidth configurations are supported
Solution Approach 1:
The patent segments the downlink bandwidth into multiple bandwidth parts, each with different size configurations. By dividing the total bandwidth into separate, manageable parts (e.g., initial bandwidth part and default bandwidth part), the system enables flexible selection of appropriate bandwidth configurations without requiring complex management of a single large bandwidth, thus improving adaptability while controlling complexity.
Solution Approach 2:
The patent creates a universal bandwidth part configuration framework where multiple bandwidth parts serve different functions. The initial bandwidth part handles initial access and idle states, while the default bandwidth part handles active communication, and additional bandwidth parts can serve specialized purposes. This multi-functional approach allows a single system to handle diverse communication scenarios without requiring separate dedicated configurations for each case.
Data Source
AI summary
A method for information processing, performed by a first-type terminal or a base station, includes: determining whether to start or restart an inactivity timer according to partial or all of following conditions: a configuration situation of a default downlink bandwidth part (BWP) of the first-type terminal, a configuration situation of an initial downlink BWP of the first-type terminal, and a downlink BWP to which the first-type terminal is handed over.