Wireless Access Control for Congested Satellite Cell Coverage
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Solution Overview
Problem
In non-terrestrial networks, the increased coverage area of satellite cells leads to a proportional increase in the number of served terminals, overwhelming available bandwidth resources, resulting in resource congestion and low utilization despite existing service type-based unified access control mechanisms.
Innovation Solution
A wireless communication method that allows terminals to obtain access-control configuration information for explicit access control, indicating which terminals are barred or allowed to access the network based on actual network conditions, using terminal type, geographic region, and serving cell information to optimize resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the coverage area of satellite cell is increased, then the number of served terminals is increased, but the system resource congestion is worsened
Solution Approach 1:
The patent segments the large coverage area into multiple access control zones with different access control parameters. Terminals are assigned to different access categories based on their service types and locations, allowing differentiated access control within the same coverage area. This segmentation enables the system to serve more terminals by distributing them across multiple access categories rather than having them all compete for the same resources simultaneously.
2Reliability
If the service type-based UAC mechanism is adopted, then some terminals are barred from accessing the network, but a large number of other service terminals still congest system resources
Solution Approach 1:
The patent applies local quality by assigning different access control parameters to different access categories based on service types. Instead of uniform access control across all terminals, the system configures specific access control parameters (such as access probability, barring duration) for each access category. This allows terminals with different service requirements to have tailored access control, improving both access control effectiveness and resource utilization by preventing congestion from specific service types while allowing others to proceed.
3Productivity
If explicit access control based on terminal type and geographic region is implemented, then resource congestion is reduced, but the complexity of access control configuration is increased
Solution Approach 1:
The patent implements dynamic access control where the network device can dynamically adjust access control parameters for different access categories based on current network conditions. The system can dynamically configure which terminals belong to which access categories and adjust access control parameters in real-time. This dynamic approach allows the system to adapt to changing network conditions, reducing resource congestion while managing configuration complexity through automated adjustments rather than static, manual configuration.
Data Source
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AI summary
A wireless communication method, a terminal device, and a network device are provided. The method includes the following. Obtain access-control configuration information. Perform cell access control according to the access-control configuration information, where the access-control configuration information indicates information related to a terminal barred from accessing a target network or allowed to access the target network. As such, it is possible to realize efficient utilization of network resources.