Caller ID Verification via Initial Address Message
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Solution Overview
Problem
Mobile networks are vulnerable to fraudulent activities such as call spoofing and refiling, where caller IDs are falsified to evade billing schemes, leading to network congestion and security issues for both operators and users.
Innovation Solution
Implementing a system that verifies the status of networked devices by sending an initial address message (IAM) to determine if the device is 'busy' or 'free', thereby authenticating the caller information and terminating communication requests with non-matching identities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If caller-ID information is falsified to evade billing schemes, then fraudsters can circumvent appropriate billing and incur different charges, but network operators suffer revenue loss and users receive unwanted calls
Solution Approach 1:
The system performs preliminary verification by sending an Initial Address Message (IAM) to the networked device identified from the communication request before allowing the call to proceed. This advance check determines whether the device is 'busy' or 'free' and compares it with the caller-ID information, preventing fraudulent calls from being connected and thus protecting billing accuracy before the fraud can occur
Solution Approach 2:
The system establishes a feedback loop by communicating with the networked device to obtain its actual status and comparing this feedback information with the caller-ID provided in the communication request. This feedback mechanism enables the system to detect discrepancies between the claimed identity and the actual device status, thereby identifying and blocking fraudulent calls
2Reliability
If the system verifies device status by communicating with networked devices, then caller information can be authenticated, but network processing demand increases
Solution Approach 1:
The system applies verification selectively rather than universally - it verifies device status for calls where suspicion of fraud exists or as a targeted measure, rather than requiring verification for every single call. This partial application of the verification process reduces the overall network processing demand while still maintaining caller ID accuracy for suspicious calls
Solution Approach 2:
The system leverages existing network infrastructure and protocols (such as the standard IAM messaging mechanism already present in telecommunication networks) to perform verification, rather than introducing entirely new complex verification systems. By using self-existing network capabilities, the processing demand is minimized while still achieving authentication
3Productivity
If fraudulent communication requests are allowed to pass through, then network throughput is maintained, but network congestion increases due to malicious calls
Solution Approach 1:
The system extracts and removes fraudulent communication requests from the network traffic stream by identifying them through verification failures and terminating them before they can consume network resources. By taking out these malicious calls, the system prevents network congestion caused by fraudulent traffic while allowing legitimate calls to maintain normal throughput
Data Source
AI summary
In one embodiment, a network interface operable to receive a communication request over a communication link of a radio access network. A processor determines one or more characteristics based on the communication request and communicates a message to a networked device to determine a status of the network device identified based on at least one of the characteristics. The processor then terminates the communication request based in part on the status of the networked device.