LTE Node Simulator eGTP Indirect Tunneling Routing
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Solution Overview
Problem
Mobile network equipment simulation and testing platforms face complexity in efficiently initiating and handling indirect tunneling during mobility events in LTE networks, which can lead to packet loss and increased resource requirements.
Innovation Solution
An LTE node simulator with a processing module and an eGTP module that identifies packets no longer associated with serving user devices, bypasses extensive processing, and routes them to the core network, using a dynamic list of identifiers to manage indirect tunneling and ensure packet delivery to the correct endpoints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the LTE node simulator processes all data packets through the processing module, then packet delivery reliability is improved, but processing overhead and resource utilization deteriorate
Solution Approach 1:
The patent extracts the identification and routing function from the general processing module. A separate identification module detects packets requiring indirect tunneling and extracts them from the main processing flow, routing them directly to the core network without full processing module intervention. This reduces processing overhead while maintaining reliability for packets that need indirect routing.
Solution Approach 2:
The patent introduces an identification module as an intermediary between the processing module and the core network. This intermediary detects packets requiring indirect tunneling and facilitates their direct routing, preventing them from consuming processing module resources while ensuring they reach the correct destination through the appropriate path.
2Reliability
If the LTE node simulator implements comprehensive indirect tunneling handling, then packet loss during mobility events is reduced, but device complexity increases
Solution Approach 1:
The patent segments the packet handling process into distinct functional modules: an identification module that detects packets requiring indirect tunneling, a routing module that directs them to the core network, and the main processing module that handles other packets. This segmentation reduces simulation complexity by creating modular, manageable components with clear responsibilities.
Solution Approach 2:
The patent performs preliminary identification of packets requiring indirect tunneling before they enter the main processing flow. By detecting and routing these packets in advance, the system prevents packet loss during mobility events without requiring the entire simulation framework to be overly complex, as the preliminary action handles the critical case separately.
3Reliability
If the LTE node simulator routes packets through the core network for mobility events, then end to end reliability is improved, but processing time increases
Solution Approach 1:
The patent extracts packets requiring core network routing from the main processing flow and directs them through a dedicated indirect tunneling path. This extraction allows these packets to bypass time-consuming processing steps in the processing module while still achieving reliable delivery through the core network, reducing overall processing time while maintaining end-to-end reliability.
Solution Approach 2:
The patent performs preliminary identification and routing of packets needing indirect tunneling before full processing would occur. This preliminary action prevents unnecessary processing time from being spent on packets that require core network routing, while ensuring they are correctly directed for reliable delivery, thus optimizing the time-reliability tradeoff.
Data Source
AI summary
Methods, systems, and computer readable media for initiating evolved general packet radio service (GPRS) tunneling protocol (eGTP) indirect tunneling are disclosed. According to one method, the method occurs at a long term evolution (LTE) node simulator including a module for processing data packets. The method includes receiving a data packet associated with a user device. The data packet includes an endpoint identifier for identifying a first transceiver simulated by the LTE node simulator. The method also includes determining, using the endpoint identifier, whether the data packet should be processed by the module. The method further includes in response to determining that the data packet should be processed by the module, processing the data packet. The method also includes in response to determining that the data packet should not be processed by the module, initiating routing the data packet to a network node.