CSCF Node Multiple Device Association Single Telephone Number
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Solution Overview
Problem
Users with multiple mobile telecommunication devices are restricted from registering them under a single public identity, forcing them to purchase separate lines and use different telephone numbers for each device, limiting convenience and flexibility.
Innovation Solution
Implementing a system that allows multiple user devices to be associated with a single telephone number through the Call Session Control Function (CSCF) node in the mobile telecommunication network, using IP Multimedia Private Identities (IMPIs) for device identification and registration, enabling seamless communication across devices without the need for multiple SIM cards or service lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple mobile telecommunication devices are registered under separate lines of service, then each device can independently communicate, but the user must purchase multiple telephone numbers and service lines, increasing complexity and cost
Solution Approach 1:
The patent merges multiple device identities (IMPIs) under a single public identity (MSISDN/telephone number) by modifying the registration process. The CSCF node is enhanced to accept multiple IMPIs in a single registration request and maintain them together in the HSS, allowing multiple devices to share one telephone number and be managed as a unified service line.
Solution Approach 2:
The patent makes the telephone number (MSISDN) universal across multiple devices. Instead of each device requiring its own unique public identity, a single MSISDN can be associated with multiple IMPIs, enabling any of the registered devices to send and receive communications under the same telephone number, thus providing multi-functionality to the public identity.
2Ease of operation
If multiple devices are registered with different telephone numbers, then each device has unique identification, but users cannot receive communications on all devices using a single number, reducing convenience
Solution Approach 1:
The patent combines multiple device-specific identities (IMPIs) under a single public identity (MSISDN). The modified registration process allows a user to register multiple IMPIs simultaneously with one MSISDN, and the network infrastructure (CSCF and HSS) is updated to maintain these associations, enabling unified communication access across all devices.
Solution Approach 2:
The patent introduces a new dimensional relationship between public and private identities. Traditionally, one MSISDN maps to one IMPI (1:1 relationship). The patent extends this to a 1:N relationship where one MSISDN can map to multiple IMPIs, adding a new dimension of multiplicity to the identity association model.
3Adaptability or versatility
If the registration system enforces one-to-one mapping between public and private identities, then network management is simplified, but users cannot substitute devices without purchasing additional service lines
Solution Approach 1:
The patent introduces dynamic configurability to the registration system. The CSCF node is modified to accept a configurable parameter that determines whether to enforce strict one-to-one mapping or allow one-to-many mapping between MSISDN and IMPI. This dynamic adjustment allows the system to adapt to different service models and user needs without fundamental architectural changes.
Solution Approach 2:
The patent changes the registration parameter from requiring a single IMPI per MSISDN to accepting multiple IMPIs per MSISDN. The registration request message is modified to include a list of IMPIs, and the HSS storage structure is updated to maintain multiple private identity associations with each public identity, fundamentally changing the data model parameters.
Data Source
AI summary
Multiple user devices may be associated with a single telephone number to enable a user to initiate and receive communication via the single telephone number from any of the multiple user devices. An input is received at a service portal of a mobile telecommunication network. The input configures multiple user devices to share a common telephone number to initiate and receive communications. The input is stored as a device association profile in a device association data store that is accessible by a call session control function (CSCF) node of the mobile telecommunication network. The CSCF node then further determines based at least on the device association profile whether a user device is eligible to use the common telephone number to initiate and receive communications via the mobile telecommunication network.