Mobile Station Application Control for Emergency Traffic Management
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Solution Overview
Problem
Conventional access control methods in mobile communication systems, such as Access Class Barring, DSAC, and SSAC, cannot effectively restrict or permit communications of specific applications on smartphones during disaster emergencies, as they operate at the lower RRC layer and lack the capability to judge application types.
Innovation Solution
A mobile communication system and method that allows network operators to control which applications can communicate by transmitting restriction instructions to smartphones, which hold application control information including identification information of restricted or permitted applications, and notify upper layers to implement these restrictions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional access control methods (Access Class Barring, DSAC, SSAC) are used, then network traffic can be restricted at the RRC layer, but specific application communications cannot be selectively controlled
Solution Approach 1:
The patent segments the control mechanism into two distinct parts: (1) the network side that generates and transmits restriction instructions containing application identification information, and (2) the mobile station side that receives, stores, and enforces these instructions by blocking specific application communications. This segmentation enables application-specific control without requiring complex judgment capabilities at the RRC layer.
Solution Approach 2:
The network apparatus transmits communication restriction instructions to the mobile station in advance, before actual communication congestion occurs or during emergency situations. The mobile station stores these instructions and immediately enforces them when needed, eliminating the need for real-time application judgment at the RRC layer and enabling rapid response to emergencies.
2Reliability
If RRC layer control is implemented, then network-wide access restriction is achieved, but application type judgment capability is lost
Solution Approach 1:
The patent introduces communication restriction instructions as an intermediary carrier that conveys application control requirements from the network to the mobile station. These instructions contain application identification information and act as a bridge, transferring the control function from the RRC layer to the application layer without compromising network authority or reliability.
Solution Approach 2:
The mobile station is equipped with the capability to autonomously judge and enforce communication restrictions based on received instructions. The mobile station stores application control information locally and automatically blocks communications from restricted applications without requiring continuous network intervention or complex RRC-layer judgment mechanisms.
3Productivity
If all applications are restricted uniformly, then network congestion is reduced, but critical communications during emergencies are blocked
Solution Approach 1:
The patent applies different control qualities to different applications: critical applications (such as emergency services, safety confirmation, and message board services) are permitted to communicate freely, while non-critical applications are restricted. This differentiated approach ensures network congestion is reduced without blocking essential communications during emergencies.
Solution Approach 2:
The network apparatus dynamically changes communication restriction parameters by transmitting updated restriction instructions that reflect current emergency conditions. The mobile station adjusts its blocking behavior based on these parameter changes, allowing flexible control that maintains critical communications while restricting non-essential traffic during disaster emergencies.
Data Source
AI summary
A UE (20A) includes an application control information holding unit (23) configured to hold application control information at least including identification information of an application (21) to be restricted or permitted to perform communications among the multiple applications (21); a restriction instruction reception unit (24) configured to receive, via a radio base station, a communication restriction instruction to control communications of the application (21) to be restricted or permitted to perform communications among the multiple applications (21); and a restriction instruction notification unit (25) configured to notify an upper layer, which is configured to implement communications with the application (21), of reception of the communication restriction instruction based on the communication restriction instruction received by the restriction instruction reception unit (24).