Mobile Communication Congestion Control via Selective Processing Restriction
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Solution Overview
Problem
Conventional mobile communication systems face congestion issues due to simultaneous processing of location registration and calling requests, leading to unnecessary restrictions on all processing in circuit and packet switches, affecting call-receiving and location registration for mobile stations.
Innovation Solution
A mobile communication system with a congestion factor detector and restriction indication transmitter that specifically identifies and restricts only the processing causing congestion, allowing unaffected processes to continue, using a radio network controller and exchange to transmit broadcast information to mobile stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all processing in circuit switch and packet switch is restricted when congestion is detected, then congestion is prevented, but call-receiving processing and location registration processing are unnecessarily affected
Solution Approach 1:
The patent segments the restriction indication into specific processing types (location registration processing, calling processing, call-receiving processing) rather than applying a blanket restriction to all processing. The exchange detects congestion occurrence factors and transmits restriction indications that specify only the problematic processing types, allowing other essential processing to continue normally.
Solution Approach 2:
The patent applies local quality by making the restriction indication specific to certain processing types rather than uniform across all processing. The exchange identifies which specific processing (e.g., location registration or calling) is causing congestion and restricts only those types, while leaving other processing (e.g., call-receiving) unaffected.
2Reliability
If all processing in exchange is restricted when congestion occurs, then network congestion is avoided, but location registration processing by mobile stations is unnecessarily prohibited
Solution Approach 1:
The patent segments the restriction indication to target only location registration processing when congestion is detected, rather than restricting all processing in the exchange. This allows other processing types to continue normally while preventing the specific congestion-causing processing.
Solution Approach 2:
The patent applies local quality by making the restriction indication specific to location registration processing. The exchange identifies that location registration is causing congestion and transmits a restriction indication that applies only to that processing type, preserving other essential functions.
3Reliability
If restriction indication specifies all processing types, then congestion is prevented, but network efficiency is reduced due to over-restriction
Solution Approach 1:
The patent applies local quality by making the restriction indication specific to the processing type causing congestion rather than applying a uniform restriction to all processing. This targeted approach prevents over-restriction and maintains network efficiency by allowing non-problematic processing to continue uninterrupted.
Data Source
AI summary
An object of the present invention is to avoid congestion, by restricting only processing which causes the congestion without affecting processing which essentially should not be restricted. In a mobile communication system according to the present invention, an exchange MSC/SGSN includes: a congestion factor detector configured to detect a congestion occurrence factor in the switching exchange MSC/SGSN, and a restriction indication transmitter configured to transmit, a restriction indication, to a radio network controller, based on the detected congestion occurrence factor, the restriction indication instructing a processing type that should be restricted in the switching exchange MSC/SGSN congestion occurrence factor. The radio network controller RNC is provided with a broadcast information transmitter configured to transmit broadcast information including the received restriction indication to a mobile station UE.