NB-IoT IP Packet Aggregation to Cut Redundant Header Transmission
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Solution Overview
Problem
Existing data transmission solutions in NB-IoT scenarios result in excessive redundant data, leading to high power consumption and inefficient power usage in IoT terminals.
Innovation Solution
A data transmission method that caches data IP packages and encapsulates them into new IP packages with a proxy server address, reducing redundant data transmission and optimizing the data payload length to 1480 bytes or less, while using a proxy server for forwarding and mapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is transmitted using standard 3GPP protocol layers (PDCP, RLC, MAC, PHY), then data transmission function is achieved, but excessive redundant package headers are added at each layer causing high power consumption
Solution Approach 1:
The patent extracts and removes the redundant package headers added by standard protocol layers (PDCP, RLC, MAC). Instead of transmitting complete packaged data with all protocol headers, the invention transmits only the necessary payload data, eliminating the harmful redundant header information that causes excessive power consumption in NB-IoT terminals
Solution Approach 2:
The patent changes the data transmission parameter from complete packaged data (including multiple layer headers) to stripped payload data. By modifying what data is actually transmitted - removing the protocol layer packaging - the invention reduces the transmission amount and consequently lowers power consumption while maintaining the essential data transmission function
2Productivity
If package assembling period is set to aggregate multiple IP packages, then transmission efficiency is improved, but delay increases due to waiting for assembly period to end
Solution Approach 1:
The patent applies preliminary action by pre-setting the package assembling period and preparing the assembly mechanism in advance. The terminal continuously monitors incoming IP packages and automatically aggregates them during the predetermined assembly period, so that when the period ends, packages are ready for immediate transmission without additional processing delay
Solution Approach 2:
The patent implements periodic action by dividing data transmission into regular assembly periods. Multiple IP packages are collected during each period, and transmission occurs periodically when the assembly period expires. This periodic aggregation balances the trade-off between efficiency (through batching) and delay (through controlled waiting periods)
Data Source
Figure 1A~1B
Figure 2~3
Figure 4A
AI summary
Provided by the present disclosure are a data transmission method and device, terminal, and server, the method comprising: caching a data IP package generated by an upper layer application before reaching a package assembling point; , encapsulating cached data IP packages as a data payload in a new IP package after reaching the package assembling point; configuring a destination address in the new IP package to be a proxy server address; and sending the new IP package to the proxy server. By means of the solution of the present disclosure, the sending of redundant data may be significantly reduced, the transmission efficiency may be improved, the transmission power may be reduced, thereby reducing the terminal power consumption; the solution is very suitable for an NB-loT terminal which has demanding power consumption requirements and which is not sensitive to delay.