Femtocell SMS Indirect Routing via Convergence Server
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Solution Overview
Problem
Current cellular radio systems face limitations in efficiently routing mobile-originated short message service (SMS) messages for mobile stations attached to femtocell systems, lacking mechanisms for effective convergence with macrocellular systems to deliver SMS messages.
Innovation Solution
The implementation of a convergence server that facilitates indirect routing of SMS messages by forwarding mobile-originated messages to the home message center, utilizing either traffic or paging channels, and performing authentication to ensure secure and efficient delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If indirect routing is implemented for SMS messages in femtocell systems, then message delivery efficiency is improved, but system complexity increases due to additional authentication and forwarding processes
Solution Approach 1:
The convergence server acts as an intermediary component between the femtocell system and the core network message centers. It receives SMS messages from the femtocell, performs authentication, and forwards messages to the appropriate home message center or destination message center, thereby enabling efficient indirect routing without requiring complex modifications to existing femtocell or core network infrastructure
Solution Approach 2:
The convergence server performs multiple functions including authentication of mobile stations, routing determination based on message type (mobile-originated or mobile-terminated), and message forwarding to appropriate destinations. This multi-functionality consolidates several operations into a single component, managing system complexity while improving message delivery efficiency
2Reliability
If authentication processes are performed for SMS messages, then security is improved, but processing time increases
Solution Approach 1:
The convergence server performs authentication of mobile stations in advance before message routing and delivery. By completing authentication prior to message forwarding, the system ensures security requirements are met while allowing subsequent message processing to proceed without repeated authentication delays
3Quantity of substance
If femtocell systems are integrated with macrocellular systems, then network capacity is improved, but routing mechanisms become more complex
Solution Approach 1:
The convergence server serves as a mediator that enables integration between femtocell and macrocellular systems by handling routing decisions for SMS messages. It determines whether messages should be routed to home message centers or destination message centers based on the message type, thereby managing the complexity of integrated network routing while maximizing network capacity utilization
Data Source
AI summary
A system, method, and computer readable medium that facilitate indirect routing of mobile-originated short messages for a mobile station attached with a femtocell system are provided. A convergence server uses indirect routing for delivery of a short message. The MS may elect to use a traffic or paging channel for delivery of the short message. If the MS selects the traffic channel for delivery of the message and if there is no existing traffic channel, the MS may first attempt to establish a traffic channel. If an active traffic channel is already established between the mobile station and the femtocell system, the mobile station sends the message to the femtocell system which, in turn, forwards the message to the convergence server. If the MS elects to send the message over a paging channel, the MS sends the message along with authentication data to the femtocell system that first performs authentication and subsequently forwards the message to the convergence server which, in turn, forwards the short message to the home message center.