Base Station C-SGN Registration for LTE Data Transmission
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Solution Overview
Problem
Current data transmission methods in LTE networks involve excessive signaling interactions, leading to low transmission efficiency and high consumption of radio resources, especially when using Cellular IoT Serving Gateway Node (C-SGN).
Innovation Solution
A data transmission method that reduces signaling interactions by acquiring an information element for C-SGN registration during RRC connection setup, allowing the base station to directly transmit data to the C-SGN without establishing a dedicated bearer channel, thereby minimizing radio resource consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated bearer channel is set up through MME for data transmission, then data can be transmitted through the bearer channel, but a large amount of signaling interaction is required which consumes plenty of radio resources
Solution Approach 1:
The patent extracts the bearer channel setup function from the MME and relocates it to the base station. The base station directly establishes data radio bearers with the UE without requiring MME involvement, thereby eliminating the extensive signaling interaction between UE, base station, and MME while maintaining reliable data transmission capability
Solution Approach 2:
The patent introduces a new intermediary element - the base station - that directly manages data transmission between UE and the data network. By making the base station the mediator for data bearer management rather than relying on MME as intermediary, the signaling overhead is significantly reduced while data transmission reliability is preserved
2Reliability
If extensive signaling interaction is performed for bearer channel setup, then data transmission can be established, but transmission efficiency is reduced due to the time consumed in signaling
Solution Approach 1:
The patent performs preliminary action by pre-establishing data radio bearers at the base station before actual data transmission begins. The base station proactively configures and activates data bearers in advance, so when data needs to be transmitted, the pathway is already ready, eliminating the need for time-consuming signaling interactions during actual data transmission
Solution Approach 2:
The patent skips the intermediate signaling steps between base station and MME for bearer setup. By rushing through the bearer establishment process directly at the base station without MME intervention, the patent significantly reduces the time required for data transmission setup while ensuring reliable connection establishment
Data Source
AI summary
A data transmission method and a base station are provided. The method includes: setting up an RRC connection with a UE, and acquiring an information element for requesting C-SGN registration from a message transmitted by the UE during the setup of the RRC connection; transmitting an initial UE message to a connected C-SGN, wherein the C-SGN registers the UE based on the information element for requesting C-SGN registration contained in the initial UE message; after the UE registers to the C-SGN and data is received from the UE, transmitting the data to the C-SGN which then transmits the data to a destination address. By the method, signaling interaction during data transmission is reduced, which may improve efficiency of data transmission and reduce consumption of radio network resources.