Dynamic Group Priority Access Control in LTE Networks
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Solution Overview
Problem
Current cellular communication systems, particularly LTE networks, lack dynamic group-specific access priority control, leading to inefficient network resource allocation and access barring that is not tailored to group calls, affecting high-priority group members and regular users.
Innovation Solution
Implementing a dynamic mechanism to control access priority by broadcasting a priority group list on a multicast interface, where subscriber devices are barred from channel access if their group identifiers do not match those in the list, allowing only high-priority group members to access the network during high-priority group calls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If generic access barring is implemented in LTE networks, then all users in a particular access class are uniformly barred from network access, but this approach lacks group-specific control and affects both high-priority and regular users unnecessarily
Solution Approach 1:
The patent segments the access barring control by introducing group-specific identifiers (group IDs) that divide users into distinct groups. Instead of applying uniform access barring to all users in an access class, the system now applies barring selectively to specific groups based on their group IDs, enabling fine-grained control over which groups are affected by access barring while allowing other groups to access the network normally.
Solution Approach 2:
The patent implements local quality by making access barring properties specific to particular groups rather than uniform across all users. Each group can have its own access barring status determined by matching its group ID against the barred group IDs list, allowing different quality of access control for different groups within the same access class.
2Productivity
If access barring is implemented to control network access, then network resource allocation is improved, but the barring lasts even after high-priority users have completed access and bearer assignment, causing unnecessary access delays
Solution Approach 1:
The patent implements dynamic access barring by continuously monitoring the access status of high-priority users. The access barring for groups is adjusted in real-time based on whether high-priority users have completed their access and bearer assignment. When high-priority users finish their transactions, the barring is automatically removed, allowing normal users to access the network again, thus minimizing unnecessary access delays.
Solution Approach 2:
The system employs feedback mechanisms to monitor the access status of high-priority users and adjust access barring accordingly. The network controller receives feedback about bearer assignment completion and uses this information to dynamically update the access barring status for groups, ensuring that barring is maintained only as long as necessary to prioritize high-priority access.
3Adaptability or versatility
If operator intervention is required to change access barring information in SIB messages, then access control policy can be adjusted, but this reduces system responsiveness and requires manual configuration changes
Solution Approach 1:
The patent enables the system to self-adjust access barring without requiring operator intervention. The network controller automatically monitors access patterns, identifies high-priority groups, and dynamically updates access barring information in SIB messages based on real-time network conditions and group access status, making the system self-configuring and responsive to changing requirements.
Solution Approach 2:
The system performs preliminary actions by pre-configuring group IDs and access class associations in advance. When access control adjustments are needed, the system can rapidly apply pre-planned barring configurations to the appropriate groups without requiring manual operator input, enabling fast automated response to access control requirements.
Data Source
AI summary
The disclosure relates to dynamically controlling group priority access to a wireless network for a plurality of subscriber devices. An aspect transmits, on a broadcast/multicast interface, a priority group list indicating a priority state of at least one communications group of subscriber devices, wherein a subscriber device is barred from performing channel access procedures when at least one group identifier of the priority group list does not match at least one group identifier of a list of group identifiers of the subscriber device. An aspect receives, on a broadcast/multicast interface, a priority group list indicating a priority state of at least one communications group of subscriber devices, and bars channel access procedures when at least one group identifier of the priority group list does not match at least one group identifier of a list of group identifiers of the subscriber device.