SMS Router Identifier Request Message Handling
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Solution Overview
Problem
Current network resources are inefficiently utilized in public land mobile networks due to the misuse of MAP SRI-SM messages, leading to unnecessary retrieval of IMSI and MSC/SGSN addresses when only MCC+MNC are needed, resulting in resource wastage and potential fraud.
Innovation Solution
Incorporating an indication field in the MAP SRI-SM message to differentiate between requests for IMSI, MCC+MNC, and MSC/SGSN addresses, allowing the SMS-Router to allocate resources only when a short message is intended for delivery, thereby disabling unnecessary resource allocation for non-intended message deliveries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the MAP SRI-SM message is used to retrieve IMSI and MSC/SGSN addresses, then the network can deliver short messages, but network resources are wasted when only MCC+MNC are needed
Solution Approach 1:
The patent segments the identifier retrieval process by introducing an indication field that divides requests into two categories: those requiring only MCC+MNC and those requiring full IMSI with MSC/SGSN address allocation. This segmentation allows the SMS-Router to apply different resource allocation strategies based on the specific needs of each request, avoiding unnecessary resource consumption.
Solution Approach 2:
The patent changes the parameter structure of the MAP SRI-SM message by adding an indication field that specifies the type of information required. This parameter change enables the system to differentiate between lightweight queries (MCC+MNC only) and full routing requests (IMSI + MSC/SGSN), thereby optimizing resource allocation according to the actual information needs.
2Reliability
If the SMS-Router allocates Correlation ID for every MAP SRI-SM message, then message delivery can be tracked, but resources are wasted when no short message is intended
Solution Approach 1:
The patent introduces dynamic resource allocation where the SMS-Router adjusts its behavior based on the indication field. When the indication shows only MCC+MNC is needed, the system dynamically skips Correlation ID allocation and HLR querying. When full message delivery is intended, the system dynamically activates the complete resource allocation process. This dynamic adaptation ensures resources are allocated only when necessary while maintaining reliability for actual message deliveries.
3Measurement precision
If the HLR is queried for every identifier request, then accurate subscriber information is obtained, but network traffic and processing time increase
Solution Approach 1:
The patent extracts only the necessary information from the HLR by using the indication field to determine the query scope. When only MCC+MNC is indicated as needed, the system extracts and returns just those elements without performing a full HLR query. This selective extraction reduces network traffic and processing time while maintaining the precision needed for the specific request type.
Data Source
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AI summary
An apparatus is described comprising an identifier request message receiving device (101), an indication detecting device (102) and an identifier retrieving device (103). The identifier request message receiving device (101) is adapted for receiving an identifier request message (MAP SRI-SM) for providing a mobile user identifier (MCC, MNC, IMSI). The indication detecting device (102) is adapted for detecting an indication within the identifier request message (MAP SRI-SM) wherein the indication indicates whether the mobile user identifier (MCC, MNC, IMSI) only is requested. The identifier retrieving device is adapted for retrieving the mobile user identifier (MCC, MNC, IMSI) dependent on the detected indication (902a, 902b).