RedCap Channel Measurement Using First BWP Segmentation
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Solution Overview
Problem
RedCap terminals in 5G NR systems face challenges in monitoring initial DL BWPs and performing SSB-based measurements due to bandwidth limitations, exceeding their maximum capability of 100 MHz under FR2.
Innovation Solution
A channel measurement method that configures a first BWP to carry system, paging, or initial access messages, ensuring the total bandwidth does not exceed the terminal's capability, and employs measurement strategies like SSB-based or CSI-RS-based measurements within configured gaps or alternative BWPs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal monitors the initial DL BWP and performs measurements based on the SSB simultaneously, then the measurement capability is improved, but the bandwidth requirement exceeds the RedCap terminal's maximum capability of 100 MHz
Solution Approach 1:
The patent segments the bandwidth resources by introducing a first BWP (bandwidth part) that is separate from the SSB bandwidth. The terminal monitors the initial DL BWP for downlink information while performing measurements on the SSB in a separate bandwidth region. This segmentation allows the terminal to handle both monitoring and measurement functions within its 100 MHz bandwidth constraint by dividing the total bandwidth into distinct functional parts.
2Area of stationary object
If the bandwidth for monitoring the initial DL BWP and performing measurements based on the SSB is reduced to fit within 100 MHz, then the bandwidth capability is satisfied, but the measurement precision and monitoring effectiveness deteriorate
Solution Approach 1:
The patent applies local quality by configuring the first BWP with specific bandwidth characteristics optimized for monitoring downlink information (system messages, paging messages, initial access messages), while the SSB occupies a separate bandwidth region optimized for channel measurements. Each bandwidth region is locally optimized for its specific function, ensuring that both monitoring and measurement achieve sufficient effectiveness within the overall 100 MHz constraint.
Data Source
AI summary
A channel measurement method is applied to a terminal, and includes: in response to that a bandwidth part (BWP) monitored by the terminal is a first BWP and that channel measurement needs to be performed, performing the channel measurement based on a measurement strategy; wherein the first BWP carries at least one of following downlink information of the terminal: a system message, a paging message, or an initial access message.