Single Bearer VoIP Call Multiplexing via PCRF Rate Adjustment
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Solution Overview
Problem
Current 4G wireless networks are limited to handling only one VoIP or video telephony call per subscriber device or fixed wireless CPE/WiFi hotspot, preventing simultaneous multiple calls.
Innovation Solution
Implementing a policy and charging rules function (PCRF) within the LTE network to establish and manage a single bearer for multiple VoIP or video telephony calls by adjusting data rates for each connected device, allowing multiple calls to be handled over a single bearer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current 4G wireless network design is used, then network simplicity is maintained, but only one VoIP or video telephony call per subscriber device or fixed wireless CPE/WiFi hotspot can be handled
Solution Approach 1:
The patent merges multiple call bearers into a single shared bearer. Instead of establishing separate bearers for each VoIP or video telephony call, the system allows multiple calls to share a common bearer resource, thereby increasing the number of simultaneous calls supported while managing complexity through unified bearer management.
Solution Approach 2:
The single bearer is designed to serve multiple functions by supporting multiple different calls simultaneously. The bearer becomes a universal resource that can handle various types of voice and video telephony calls from different subscriber devices or through fixed wireless CPE/WiFi hotspots, increasing system versatility.
2Productivity
If a single bearer is shared among multiple calls, then network capacity is improved, but data rate allocation complexity increases
Solution Approach 1:
The system implements dynamic data rate allocation where the bearer's data rate is adjusted in real-time based on the active calls. When multiple calls are active, the data rate is shared dynamically among them, and when calls are dropped, the data rate is reallocated to remaining calls, optimizing network capacity while managing complexity through adaptive control.
Solution Approach 2:
The patent changes the data rate parameter of the single bearer dynamically to accommodate different numbers and types of simultaneous calls. By adjusting the data rate parameter based on current call conditions, the system improves network capacity to handle multiple calls while managing the complexity through parameter adaptation rather than structural complexity.
3Adaptability or versatility
If multiple calls are supported per device, then service versatility is enhanced, but call handling complexity increases
Solution Approach 1:
The system implements self-service mechanisms where the network automatically manages call allocation and bearer resources without requiring complex user intervention. The PCRF (Policy and Charging Rules Function) and other network elements automatically handle the complexity of managing multiple simultaneous calls, making the service versatile while keeping operation simple for end users.
Data Source
AI summary
A device receives a first request to establish a bearer with a first UE associated with a LTE device, where the first request includes first parameters associated with the first UE. The device also determines that the LTE device does not have the bearer established, and provides a new bearer request, with the first parameters, to a wireless network in order to establish the bearer with the LTE device at a first data rate. The device further receives a second request to establish another bearer with a second UE associated with the LTE device, where the second request includes second parameters associated with the second UE. The device determines that the LTE device has the bearer established, and provides a modify bearer request, with the second parameters, to the wireless network in order to modify the bearer with the LTE device to a second data rate.