Service Control Entity for Dynamic Call Routing

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Solution Overview

Problem

Current telecommunications systems for UMA/GAN-subscribers lack flexibility in routing calls between multiple user equipment devices, particularly in determining the most cost-effective or efficient route based on the subscriber's location within their home area or outside, and do not allow for dynamic control of call routing settings.

Innovation Solution

A method and system where a service control entity in the telecommunications network stores a list associated with the UMA/GAN-subscriber, including indicators for routing calls to specific user equipment based on location, allowing for dynamic control and modification of these indicators to optimize call routing within or outside the home area, and enabling parallel or sequential ringing across multiple devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If call routing is fixed to a single user equipment, then system complexity is reduced, but adaptability and versatility are limited

Engineering Contradiction:
Improvecall routing flexibilityVSAvoidrouting control complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements dynamic call routing by introducing a service control entity that can modify routing indicators based on subscriber location. The routing behavior changes dynamically between home area and outside home area scenarios, allowing the system to adapt to different conditions without requiring multiple static routing configurations.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The service control entity acts as an intermediary between the location information and the call routing decision. It stores routing indicators, receives location information, determines whether the subscriber is in home area or outside, and selects appropriate routing based on this determination, thereby managing the complexity centrally rather than distributed across multiple devices.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If call routing is dynamically adjusted based on location, then adaptability is improved, but information processing requirements increase

Engineering Contradiction:
Improvelocation-based routingVSAvoidlocation information processing
Core Design Contradiction:
Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent extracts location information processing from the general call routing function and handles it separately through a dedicated service control entity. This entity specifically manages the comparison between current location and home area definition, separating the location determination logic from the routing execution logic.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The service control entity pre-stores routing indicators for both home area and outside home area scenarios before actual call routing is needed. This preliminary preparation of routing information eliminates the need for complex real-time decision-making during call setup, reducing information processing requirements at the moment of routing.

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If multiple routing indicators are stored for different locations, then call routing versatility is improved, but device complexity increases

Engineering Contradiction:
Improverouting indicator optionsVSAvoidservice control entity complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies different routing indicators based on the local condition of subscriber location. The service control entity stores distinct routing indicators for home area and outside home area scenarios, allowing each location context to have its own optimized routing configuration without requiring a single complex routing logic.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system changes the routing parameter (which indicator to use) based on the location parameter (home area or outside). By changing only the selected routing indicator rather than the entire routing logic, the system achieves versatility while keeping the service control entity relatively simple in structure.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS9020497B2Method of routing a call to one of a plurality of user equipment
Publication Date: 2015.04.28 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
  • US9020497B2 patent drawing
  • US9020497B2 patent drawing
  • US9020497B2 patent drawing

AI summary

Method of routing a call to one of a plurality of user equipment of a UMA/GAN-subscriber in a telecommunications network. The telecommunications network comprises a service control entity. Said service control entity determines whether said UMA/GAN-subscriber is within or outside a home area. The service control entity comprises a first indicator indicating at least one network address of a user equipment comprised by the plurality of user equipment to which the call is to be routed in case the UMA/GAN-subscriber is within the home area, and a second indicator indicating at least one network address of a user equipment comprised by the plurality of user equipment to which the call is to be routed in case the UMA/GAN-subscriber is outside the home area.