Narrowband CORESETO and BWP Positioning for 5G UE Access
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Solution Overview
Problem
Narrowband User Equipment (UE) in 5G networks face challenges in obtaining and configuring a narrowband Control Resource SET0 (CORESETO) and/or narrowband initial active downlink Bandwidth Part (BWP) due to bandwidth limitations, as existing methods do not account for UEs with reduced bandwidth capabilities.
Innovation Solution
A method for determining the frequency domain position of a narrowband CORESETO and/or narrowband initial active downlink BWP by reusing or adapting synchronization signals and PBCH blocks from Release 15 NR, utilizing preset association relationships, offsets, and new PBCH information to configure the necessary bandwidth resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the maximum bandwidth of CORESETO and/or initial active downlink BWP is increased to provide more resources, then the resource availability is improved, but narrowband UEs cannot access the network because the bandwidth exceeds their capability
Solution Approach 1:
The patent segments the bandwidth resources by defining a narrowband CORESETO with a subset of physical resource blocks (PRBs) that is separate from the full-bandwidth CORESETO. This segmentation allows the system to provide both narrowband access for constrained UEs and full-bandwidth resources for other UEs simultaneously, resolving the contradiction between resource quantity and UE compatibility
Solution Approach 2:
The patent applies local quality by creating a specialized narrowband configuration within the broader bandwidth structure. The narrowband CORESETO uses a specific subset of PRBs with tailored parameters (such as reduced bandwidth and adjusted frequency domain resources) that are optimized for narrowband UE capabilities, while the overall system maintains full-bandwidth support for other devices
2Adaptability or versatility
If the bandwidth of CORESETO is reduced to accommodate narrowband UEs, then narrowband UE access is enabled, but the total available resources for control channels decrease
Solution Approach 1:
The patent implements universality by designing a dual-mode CORESETO structure that can serve both narrowband and wideband UEs. The same physical channel structure (CORESETO) is configured to support multiple bandwidth requirements through parameter adjustments, allowing a single resource structure to fulfill multiple functions and serve diverse UE types without requiring completely separate resource allocations
3Quantity of substance
If the initial active downlink BWP bandwidth is increased to provide more data resources, then the data transmission capacity is improved, but narrowband UEs cannot utilize the full bandwidth
Solution Approach 1:
The patent segments the downlink BWP resources by defining a narrowband initial active downlink BWP that uses a subset of physical resource blocks, separate from the full-bandwidth BWP. This segmentation enables narrowband UEs to operate with reduced bandwidth requirements while the system maintains full-bandwidth capability for other UEs, resolving the contradiction between resource quantity and operational ease for narrowband devices
Data Source
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AI summary
An access resource determination method and device, a storage medium and a terminal. The determination method comprises: determining the frequency domain position of a narrowband CORESETO and/or a narrowband initial activation downlink BWP, and/or determining a narrowband SIB1. The present invention provides a feasible technical solution for narrowband UE to acquire a narrowband CORESETO and a narrowband initial activation downlink BWP.