Roaming Processing Device IMSI Modification for International Roaming
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Solution Overview
Problem
Less powerful mobile operators face challenges in expanding international roaming coverage due to the time-consuming and complex process of establishing bilateral roaming agreements, which limits their subscribers' access to international roaming services and hinders revenue growth.
Innovation Solution
A dual International Mobile Subscriber Identifier (IMSI) solution, where a roaming processing device in the second operator's network changes IMSI information in signaling messages, allowing international roaming without a signed bilateral agreement between the first and third operators, using a gateway device to forward modified signaling messages across networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bilateral roaming agreement is established between operators, then international roaming service quality is improved, but the setup process becomes time-consuming and complex
Solution Approach 1:
The patent introduces a third operator's network as an intermediary to enable roaming between the first operator and third operator without direct bilateral agreement. The second operator acts as a mediator that provides roaming services to the first operator's subscribers in the third operator's network, thereby establishing international roaming connectivity without requiring direct negotiation and setup between the first and third operators, significantly reducing setup time and complexity.
2Area of stationary object
If bilateral roaming agreements are established with multiple operators, then roaming coverage area is expanded, but the complexity of managing multiple agreements increases
Solution Approach 1:
The patent enables a single bilateral roaming agreement between the first operator and second operator to serve multiple third operator networks simultaneously. The second operator's network infrastructure and roaming processing capabilities are utilized to provide service across different third operator networks, allowing the first operator to expand its roaming coverage area without needing to establish separate bilateral agreements with each third operator, thereby reducing management complexity.
3Reliability
If standard bilateral roaming procedures are followed, then service reliability is ensured, but the process becomes cumbersome for less powerful operators
Solution Approach 1:
The patent employs a second operator as an intermediary that has already established comprehensive roaming capabilities and agreements with multiple third operator networks. Less powerful first operators can leverage this pre-existing infrastructure through the second operator, avoiding the cumbersome process of establishing their own bilateral roaming agreements with each third operator while still ensuring service reliability through the second operator's established systems.
4Adaptability or versatility
If multiple bilateral roaming agreements are signed, then subscriber access to roaming services is improved, but the time required for setup increases
Solution Approach 1:
The patent enables a single roaming agreement between the first operator and second operator to provide access to multiple third operator networks simultaneously. The second operator's network infrastructure serves as a universal platform that accommodates roaming services for various third operator networks, allowing first operator subscribers to access international roaming services in multiple countries without requiring separate bilateral agreements with each third operator, thereby significantly reducing setup time while maintaining broad subscriber access.
Data Source
AI summary
There are disclosed an international roaming method, a roaming processing device and a communication system for international roaming of an international roaming subscriber of a first operator in a third operator network. When the international roaming subscriber of the first operator provided with a first operator IMSI and a second operator IMSI roams in the third operator network, the roaming processing device of a second operator modifies a first signaling message from a first operator network and carrying the first operator IMSI to a second signaling message carrying the second operator IMSI and transmits the second signaling message to the third operator network, and modifies a third signaling message from the third operator network and carrying the second operator IMSI to a fourth signaling message carrying the first operator IMSI and transmits the fourth signaling message to the first operator network. There is also disclosed a gateway device.