ACDC Barring Scheme SIB Signaling Overhead Reduction
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Solution Overview
Problem
Current access barring schemes for Application-specific Congestion Control in wireless networks face challenges in efficiently managing a large number of categories, leading to increased system information block (SIB) signaling overhead and failing to meet service requirements, especially in scenarios with multiple core networks sharing the same access network.
Innovation Solution
Optimizing the access barring scheme by using a single bit for each ACDC category, where the highest barred category's information is signaled, and assuming lower categories are implicitly barred, reducing SIB signaling overhead and allowing ACDC to override access control block (ACB) controls, enabling individual core network management in a shared RAN.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If barring information is provided for each ACDC category individually, then access control precision is improved, but SIB signaling overhead increases substantially
Solution Approach 1:
The patent merges the barring information for multiple ACDC categories into a single SIB message structure. Instead of broadcasting separate barring information for each of the 256 ACDC categories, the system combines them into a unified indication that efficiently conveys access control status across all categories, thereby reducing SIB signaling overhead while maintaining access control precision.
Solution Approach 2:
The patent creates a universal barring indication mechanism that serves multiple ACDC categories simultaneously. The single SIB message structure is designed to function as a multi-functional container that can indicate barring status for numerous ACDC categories through a compact representation, eliminating the need for separate specialized messages for each category.
2Adaptability or versatility
If ACDC categories are expanded to 256 or more to meet service requirements, then application-specific control capability is improved, but SIB message size and overhead increase
Solution Approach 1:
The patent transitions from a one-dimensional approach (separate barring bits for each category) to a multi-dimensional encoding scheme where a compact set of parameters can represent the barring status of 256+ ACDC categories. This dimensional transformation allows the system to maintain fine-grained application-specific control capability while fitting all necessary information into a manageable SIB message size.
Solution Approach 2:
The patent changes the parameter representation from individual per-category barring flags to a compressed parameter set that encodes multiple categories' status. By transforming the data structure from 256 separate binary parameters to a smaller set of encoded parameters, the system maintains the ability to distinguish and control 256+ ACDC categories while significantly reducing the SIB message size.
3Adaptability or versatility
If barring information is broadcasted per PLMN in RAN sharing scenarios, then individual core network management is improved, but broadcast overhead increases when multiple PLMNs are active
Solution Approach 1:
The patent merges the barring information broadcasts for multiple PLMNs into a single unified broadcast message. Instead of transmitting separate ACDC barring information for each of the six active PLMNs, the system combines them into one efficient broadcast that conveys the necessary access control information for all PLMNs simultaneously, thereby reducing overall broadcast overhead while maintaining individual core network management capability.
Data Source
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AI summary
According to certain embodiments, a method by a network node (115) is provided for providing access control information for Application-specific Congestion Control for Data Communication (ACDC). The method includes determining ACDC barring information (402) that includes at least one of an indication for each one of a plurality of ACDC categories and a bitmap for a plurality of access classes. The network node (115) transmits the ACDC barring information (402) to a wireless device (110).