RedCap Cell Access Signaling for Fine-Grained Terminal Control
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Solution Overview
Problem
Existing communication systems face challenges in performing refined access control for terminals with reduced capabilities, as unified cellBarred information is not conducive to flexible control of RedCap terminals with varying performance requirements.
Innovation Solution
Classify RedCap terminals into multiple types based on capabilities or application scenarios, and use multiple pieces of indication information for independent access control by network devices to achieve finer-grained access management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If unified cellBarred information is used for access control, then the network equipment can control the load of all terminal equipment, but the access control flexibility for RedCap terminals with different performance requirements is reduced
Solution Approach 1:
The patent segments the unified cellBarred information into multiple separate indication information elements, each targeting specific RedCap terminal types. This segmentation allows differentiated access control policies for different terminal capabilities while maintaining a structured broadcast mechanism, thereby improving flexibility without excessive complexity.
Solution Approach 2:
The patent applies local quality by making each indication information element specific to particular RedCap terminal types or capabilities. Instead of uniform treatment, the system provides tailored access control parameters for different terminal scenarios (e.g., based on capability levels or service requirements), enabling precise control for each local case.
2Measurement precision
If multiple pieces of indication information are used for independent access control, then fine-grained access control for RedCap terminals is achieved, but the information broadcast complexity increases
Solution Approach 1:
The patent designs the indication information elements to serve multiple functions: they identify terminal types, specify access control policies, and can indicate both allowed and prohibited access conditions. This multi-functionality reduces the need for separate information elements, maintaining precision while controlling overhead.
Solution Approach 2:
The patent utilizes parameter changes by encoding different access control scenarios through variations in the indication information elements (e.g., different values, flags, or bit patterns). This allows multiple control scenarios to be represented efficiently within a standardized information framework, reducing redundancy and broadcast overhead.
Data Source
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AI summary
A network access method, a terminal device, and a network device. The method comprises: a terminal device receiving a plurality of pieces of first indication information sent by a network device, wherein each piece of first indication information in the plurality of pieces of first indication information corresponds to at least one of a plurality of reduced capability terminal types, and each piece of first indication information is used for indicating whether a terminal device of the corresponding reduced capability terminal type is prohibited from accessing a cell that the network device serves; and the terminal device determining, according to the first indication information corresponding to the reduced capability terminal type to which the terminal device belongs, whether to prohibit the terminal device from accessing the cell that the network device serves.