Wireless Device Access Barring for Cellular Network Stability
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Solution Overview
Problem
Existing access barring methods in cellular networks are all-or-nothing, leading to unnecessary disconnection of machine type communication devices regardless of their usage intensity or purpose, failing to differentiate between high and low priority devices during network overload.
Innovation Solution
A method that suppresses access to the cellular network for wireless devices operating in intensive use modes and non-privileged services by introducing an additional barring indication field in system information blocks, allowing for fine-grained control based on resource usage and service priority, with multiple intensive use levels and privileged service classes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all-or-nothing access barring is applied to machine type communication devices during network overload, then network stability is maintained, but all devices are disconnected regardless of their usage intensity or purpose
Solution Approach 1:
The invention segments the machine type communication devices into different access classes (0-9) based on their usage characteristics, traffic patterns, and priority levels. Instead of applying access barring uniformly to all devices, the system selectively applies barring to specific access classes during network overload conditions. This segmentation allows the network to maintain stability by barring low-priority devices while preserving access for high-priority devices, thus resolving the contradiction between network stability and device access flexibility.
2Loss of energy
If access barring is applied to machine type communication devices, then network resource overload is controlled, but fine-grained control based on resource usage and service priority is lost
Solution Approach 1:
The invention introduces multiple parameters to characterize device behavior and priority, including access class identifiers, usage intensity levels, service priority classifications, and data transmission patterns. By changing these parameters dynamically based on network conditions and device characteristics, the system achieves fine-grained control over resource allocation. The access barring mechanism uses these parameters to make differentiated decisions, allowing high-priority devices to maintain access while barring low-priority devices, thus controlling network resource usage without sacrificing control granularity.
3Ease of manufacture
If machine type communication devices are treated equally during access barring, then implementation is simple, but differentiation based on usage intensity and communication purpose is impossible
Solution Approach 1:
The invention implements dynamic access class assignment and barring decisions based on real-time device behavior analysis. Devices are monitored for their usage intensity, traffic patterns, and communication purposes, and their access class assignments are adjusted dynamically accordingly. During network overload, the barring mechanism dynamically selects which access classes to bar based on current network conditions and device priorities. This dynamic approach enables sophisticated device differentiation while maintaining implementation feasibility through standardized procedures and automated decision-making algorithms.
Data Source
Figure 1
Figure 2a~2b
AI summary
The present invention relates to a method for operating a wireless device in a cellular network, the wireless device operating with a base node of the cellular network, the method comprises upon noticing a barring indication received from the base node at the wireless device the step of suppressing access to the base node under the conditions: - the wireless device is operating in an intensive use mode and - the wireless device is operating in a non-privileged service.