Dynamic Data Transmission Mode Switching for MTC QoS
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current data transmission methods for Machine-Type Communications (MTC) in 5G networks face challenges in meeting varying Quality of Service (QoS) requirements, particularly in terms of time-delay, security, and data rate, due to limitations in existing NarrowBand IoT (NB-IoT) and Long-Term Evolution (LTE) modes, which affect the performance of MTC equipment such as fire alarm systems and smart devices.
Innovation Solution
A method and system that dynamically switches between NB-IoT control plane optimization mode, NB-IoT user plane optimization mode, and LTE data transmission mode based on service characteristics and data size, allowing the network to instruct terminals to switch between these modes to optimize data transmission, thereby fulfilling different QoS requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If control plane optimization mode is used for small data transmission, then signaling expenditure and terminal power usage are reduced, but security performance deteriorates due to lack of AS security context and encryption capability
Solution Approach 1:
The patent implements dynamic switching between control plane optimization mode and user plane optimization mode based on service requirements. The network side determines the appropriate mode and sends indication information to the terminal, allowing the system to transition from a static single-mode approach to a dynamic multi-mode approach that adapts to different security and data transmission needs
2Device complexity
If control plane optimization mode is used for data transmission, then signaling optimization is achieved, but it is not suitable for large data quantities due to NAS PDU size limitations requiring packet division
Solution Approach 1:
The patent enables dynamic mode selection between control plane optimization and user plane optimization based on data quantity requirements. When data exceeds the NAS PDU size limit, the system switches to user plane optimization mode which supports larger data transmissions without requiring complex packet division and reassembly procedures
Solution Approach 2:
The network side acts as an intermediary that determines the appropriate transmission mode based on service requirements and sends indication information to the terminal. This intermediary decision-making mechanism resolves the contradiction by matching the transmission mode to the data quantity needs
3Ease of operation
If control plane optimization mode is used for periodic report transmission, then data can be attached to layer 3 air interface signal, but low-priority data services occupy too many scheduling resources and encroach on RRC access signal priority
Solution Approach 1:
The patent implements dynamic mode switching where the network side can transition low-priority periodic report services from control plane optimization mode to user plane optimization mode when resource contention occurs. This allows the system to dynamically adjust resource allocation and prevent RRC access signal delays by moving bulk data transmission to the user plane
Data Source
Figure 1~3
Figure 4
Figure 5
AI summary
A method, apparatus, and system for data transmission, wherein the method comprises: the network-side network element determining the target data transmission mode; the network-side network element sending instruction information to the terminal through the base station transmission in order to instruct the terminal to switch to the target data transmission mode with which to implement data transmission; wherein, the target data transmission mode is NarrowBand IoT (NB-IoT) data transmission or Long-Term Evolution (LTE) data transmission.