RedCap Terminal Cell Selection via Bandwidth-Based Access Control
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Solution Overview
Problem
Current communication systems face network congestion due to the large number of connections from reduced capability (RedCap) terminal devices, which lack finer access control based on bandwidth capability, leading to inefficient resource utilization and reduced network throughput.
Innovation Solution
A communication method and apparatus that allow RedCap terminal devices to select or reselect cells based on first information indicating their bandwidth capability, enabling finer access control and optimizing network resource utilization by preventing unnecessary cell access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If RedCap terminal devices are allowed to connect to the network without access control, then the quantity of connections is large, but network congestion occurs and network throughput is reduced
Solution Approach 1:
The patent introduces cellBarredRedCapBW parameters that change the access behavior of RedCap terminal devices based on their bandwidth capabilities. By setting different barred states (barred/notBarred) for different bandwidth groups, the network controls which devices can access which cells, thereby managing connection quantity while maintaining network throughput.
Solution Approach 2:
The patent applies different access control policies to different groups of RedCap terminal devices based on their bandwidth capabilities. Devices with different bandwidth groups (e.g., 5MHz, 10MHz, 20MHz) are subject to different cell barring configurations, allowing fine-grained control over network access patterns and resource utilization.
2Ease of operation
If RedCap terminal devices are allowed to select or reselect cells without bandwidth-based control, then connection establishment is simple, but resource utilization becomes inefficient
Solution Approach 1:
The network configures cellBarredRedCapBW parameters that change the accessibility of cells based on device bandwidth capabilities. This allows the system to maintain simple cell selection procedures while improving resource utilization by preventing low-bandwidth devices from accessing cells that would be better suited for high-bandwidth devices.
Solution Approach 2:
RedCap terminal devices autonomously determine their bandwidth group and self-select appropriate cells based on the cellBarredRedCapBW configuration received from the network. This self-service mechanism eliminates the need for complex network-controlled device assignment while achieving efficient resource allocation.
Data Source
AI summary
A communication method and a communications apparatus are provided. The method includes: receiving, by a terminal device, first information sent by a network device, where the first information is used to indicate whether a reduced capability (RedCap) terminal device with a first bandwidth capability is allowed to select or reselect a cell corresponding to the network device; and determining, by the terminal device based on the first information, whether to select or reselect the cell.