Mobile Station Reconnection Logic for CSFB Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the CSFB process between mobile communication systems, unnecessary reconnection processes occur even though a bearer in the PS domain is not required, leading to inefficiencies and potential service disruptions.
Innovation Solution
A mobile communication method where a mobile station, upon detecting radio link synchronization issues during the switching process from a packet-switched to a circuit-switched network, only initiates a reconnect request if it was performing packet communication before the switch, and ignores such requests if it was not, thereby avoiding unnecessary reconnection processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile station performs the reconnection process of the PS domain after switching to the CS domain, then the radio link synchronization is restored, but unnecessary reconnection processes are executed when packet communication was not being performed
Solution Approach 1:
The mobile station checks whether packet communication was being performed before initiating the reconnection process. This preliminary check prevents unnecessary reconnection operations when no packet data bearers exist, thereby avoiding wasted time and resources while ensuring reconnection only when actually needed for maintaining radio link synchronization
2Reliability
If the mobile station initiates reconnection request whenever radio link failure occurs, then connection reliability is improved, but communication efficiency deteriorates due to unnecessary reconnection processes
Solution Approach 1:
The mobile station applies different reconnection behaviors based on the local condition of packet communication status. When packet communication was active, reconnection is initiated to restore reliability. When no packet communication was occurring, reconnection is skipped to maintain efficiency. This conditional approach optimizes both reliability and productivity by tailoring the reconnection action to the specific communication context
Data Source
AI summary
A mobile communication method according to the present invention includes the steps of: establishing a first radio link between the “LTE-AS” and the eNB in response to the “Service Request” received from the “EMM”; transmitting, from the “UMTS-AS” to the “MM/GMM”, the “reconnect request”, after the completion of the switching process from the mobile communication system of the LTE scheme to the mobile communication system of the UMTS scheme, when the “LTE-AS” detects RLF within a first predetermined period after receiving the switching command instructing performance of the switching process; and not transmitting, from the “MM/GMM” to the “UMTS-AS”, the “Service Request” responding to the “reconnect request”, when the mobile station UE has not performed a packet communication in the mobile communication system of the LTE scheme before a start of the switching process.