Dedicated Bearer Assignment for VoLTE Test Simulation
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Solution Overview
Problem
Current systems lack an efficient mechanism to map real-time transport protocol (RTP) traffic to separate dedicated bearers for audio and video streams in VoLTE communication sessions over LTE networks, leading to inefficiencies in test simulation scenarios requiring high throughput.
Innovation Solution
A method and system for assigning separate dedicated bearers for audio and video streams in a test simulation environment, involving the generation of dedicated bearer information and negotiation of these bearers between a simulation device and the system under test, with simulated traffic data being sent over the dedicated bearers based on mapping information and identifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If packet inspection techniques are used to map RTP traffic to EPS bearers, then traffic mapping can be achieved, but processing efficiency deteriorates due to inspection of multiple data portions and criteria
Solution Approach 1:
The patent applies preliminary action by pre-configuring mapping rules that associate specific RTP packet identifiers (such as SSRC, CSRC, or payload type fields) with dedicated EPS bearers before traffic flow begins. This allows the system to directly map packets to bearers using pre-established rules without performing complex inspection of multiple packet portions during processing, thereby maintaining mapping accuracy while significantly improving processing throughput in test simulation environments
2Reliability
If separate dedicated bearers are assigned for audio and video streams, then QoS requirements are improved, but system complexity increases due to bearer negotiation and mapping mechanisms
Solution Approach 1:
The patent applies parameter changes by utilizing existing RTP packet identifier fields (such as SSRC, CSRC, or payload type) as mapping keys to identify and route traffic to appropriate dedicated bearers. This approach ensures QoS requirements are met through separate bearer assignment while avoiding the need for complex additional signaling or negotiation mechanisms, as the mapping is performed based on parameters already present in the RTP packets themselves
Data Source
AI summary
Methods, systems, and computer readable media for assigning separate dedicated bearers for separate audio and video streams in a test simulation environment are disclosed. In one embodiment, the method includes generating dedicated bearer information associated with each of a dedicated audio bearer and a dedicated video bearer to be used for a communication session and providing the dedicated bearer information to a simulation device. The method further includes, from the simulation device, using the dedicated bearer information to negotiate establishment of the dedicated audio bearer and the dedicated video bearer between the simulation device and a system under test (SUT) and sending simulated traffic data to the SUT over the dedicated audio bearer and the dedicated video bearer in accordance with a mapping based on the dedicated bearer information and identifiers included in the simulated traffic.