Simultaneous LTE eHRPD Data Transmission via Cross-Network Bearer Coordination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current interconnection architectures for LTE and eHRPD networks only allow user equipment (UE) to transmit service data in one network at a time, limiting simultaneous data transmission across both networks.
Innovation Solution
A method and system that enables UE to transmit service data in both LTE and eHRPD networks simultaneously by establishing a radio bearer across both networks, with the Access Network (AN) entities of each network coordinating the establishment and data transmission through request messages and Quality of Service (QoS) parameter management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the current interconnection architecture for LTE and eHRPD networks is used, then the network architecture is simple and easy to implement, but the UE can only transmit service data in one network at a time, limiting data transmission capability
Solution Approach 1:
The patent segments the data transmission path by introducing separate bearers for LTE network and eHRPD network. The UE establishes independent radio bearers in each network, allowing data to be transmitted through different network paths simultaneously. This segmentation enables multi-network data transmission while keeping each individual bearer relatively simple.
Solution Approach 2:
The patent implements nesting by embedding the eHRPD bearer within the LTE network architecture. The UE maintains an LTE bearer as the primary connection and nests an additional eHRPD bearer for specific data flows. The eHRPD bearer is activated only when needed, allowing the UE to transmit data through both networks simultaneously while maintaining a hierarchical structure that manages complexity.
2Productivity
If a UE transmits service data in both LTE and eHRPD networks simultaneously, then data transmission efficiency is improved, but the management and control of multiple bearers becomes more complex
Solution Approach 1:
The patent applies preliminary action by pre-configuring the UE with bearer management capabilities and pre-establishing the LTE bearer before activating the eHRPD bearer. The network side prepares the eHRPD bearer resources in advance, and the UE is pre-programmed with the logic to manage multiple bearers. This preliminary preparation reduces the operational complexity when simultaneous transmission is activated.
Solution Approach 2:
The patent implements feedback mechanisms where the network side monitors the status and performance of both LTE and eHRPD bearers, and dynamically adjusts resource allocation and bearer activation based on network conditions, UE capabilities, and data flow requirements. This feedback loop simplifies bearer management by automating decisions about when to activate or deactivate the eHRPD bearer, reducing manual configuration complexity.
Data Source
AI summary
Embodiments of the present invention disclose a service data transmission method. An AN entity of a first network sends a first request message to an AN entity of a second network corresponding to a target cell in which a UE is located, so as to request the AN entity of the second network to establish a radio bearer for the UE. The AN entity of the first network sends a second request message to the UE, so as to request the UE to establish the radio bearer with the AN entity of the second network. After the AN entity of the second network has established the radio bearer with the UE, the AN entity of the first network transmits service data to the UE by using the AN entity of the second network.