Session Border Controller Media Release Logic
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Solution Overview
Problem
In VoIP networks, session border controllers (SBCs) often unnecessarily anchor media streams between endpoints in the same location due to separate signaling realms, leading to wastage of bandwidth.
Innovation Solution
The implementation of a SBC with configuration components that allow media release when distinct signaling realms exist for endpoints in the same location, using a hierarchical relationship between grandparent, parent, and child components to determine and override media anchoring characteristics based on port mapping information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SBC anchors media between endpoints in separate signaling realms, then signaling management is simplified and compliance with CALEA is ensured, but bandwidth is wasted when endpoints are in the same location
Solution Approach 1:
The patent applies local quality by making the media anchoring decision location-dependent rather than uniformly applying anchoring for all endpoints in separate signaling realms. The SBC checks whether endpoints are in the same physical location (using port mapping information) and only releases media when both endpoints are confirmed to be in the same location, thereby locally optimizing bandwidth usage while maintaining compliance where required
Solution Approach 2:
The patent implements dynamics by making the media anchoring behavior adaptive rather than static. The SBC dynamically evaluates port mapping information to determine whether endpoints are in the same location and adjusts its media handling accordingly - anchoring when endpoints are in different locations (for compliance) and releasing when in the same location (for efficiency). This dynamic approach resolves the contradiction between reliability and bandwidth consumption
2Adaptability or versatility
If SBC uses separate signaling realms for each enterprise gateway, then each gateway can be independently managed, but media anchoring becomes unnecessary and consumes bandwidth
Solution Approach 1:
The patent maintains the separate signaling realm structure for independent gateway management but introduces local quality by making media anchoring decisions based on the specific location of endpoint pairs. Instead of universally anchoring media for all separate signaling realms, the SBC locally evaluates each call's endpoint locations and only anchors when necessary, thus preserving gateway independence while eliminating unnecessary bandwidth consumption
3Reliability
If SBC anchors all media streams, then quality control and diagnostic testing are simplified, but bandwidth efficiency decreases
Solution Approach 1:
The patent applies dynamics by making media anchoring behavior conditional rather than universal. The SBC dynamically determines whether to anchor media based on endpoint location information obtained through port mapping lookups. Media is anchored only when endpoints are in different locations (where quality control and diagnostics are needed), and released when endpoints are in the same location (where anchoring provides no benefit), thereby optimizing bandwidth efficiency while maintaining quality control capability where required
Data Source
AI summary
A method may include receiving handshake signals to establish a media session between at least two endpoints, determining location information of the at least two endpoints based on the handshake signals, and releasing media exchanged between the at least two endpoints if it is determined that the location information of the at least two endpoints indicates that the at least two endpoints are in a same location.