CIoT EPS Optimizations for NB-IoT Small Data Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication technologies, such as 3GPP LTE, face challenges in efficiently supporting small data and SMS transfers in cellular Internet of Things (IoT) applications due to limitations in radio resource control and user plane optimizations, particularly in narrowband IoT (NB-IoT) networks, which require improved indoor coverage and low power consumption.
Innovation Solution
The implementation of Cellular Internet of Things (CIoT) optimizations, including control plane (CP) and user plane (UP) Evolved Packet System (EPS) optimizations, which enable efficient data transport over the control plane without establishing a data radio bearer and allow transitions between mobility management modes without service requests, are introduced. These optimizations are supported through specific flags and messages in the RRC connection setup process, allowing devices to indicate preferred network behaviors and optimize attachments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If traditional LTE protocols are used for data transmission, then network compatibility is maintained, but power consumption increases and indoor coverage deteriorates
Solution Approach 1:
The patent segments the transmission protocol into two distinct modes: NB-IoT protocol for power-efficient small data transfers and SMS operations, and traditional LTE protocol for larger data transfers. This segmentation allows devices to select the appropriate protocol based on data size and application requirements, reducing overall power consumption while maintaining network compatibility.
Solution Approach 2:
The patent implements dynamic protocol selection capability where the device can switch between NB-IoT and LTE protocols based on real-time conditions such as data size, power availability, and network status. This dynamic adaptation resolves the contradiction by allowing the system to optimize for power consumption when using NB-IoT while maintaining compatibility with traditional LTE networks when needed.
2Reliability
If NB-IoT optimizations are implemented, then indoor coverage and power efficiency improve, but compatibility with non-NB-IoT networks decreases
Solution Approach 1:
The patent implements a dual-mode transmission system where the device possesses both NB-IoT and traditional LTE protocol capabilities. The device can universally communicate with both NB-IoT optimized networks and traditional LTE networks, selecting the appropriate mode based on network availability and application requirements. This multi-functionality ensures broad network compatibility while enabling access to NB-IoT's superior indoor coverage when available.
Solution Approach 2:
The patent maintains compatibility with traditional LTE networks by implementing a copy of the standard LTE protocol stack alongside the NB-IoT protocol. This allows the device to operate in traditional networks using the copied LTE protocols, ensuring backward compatibility while enabling NB-IoT optimizations when operating in NB-IoT capable networks.
3Productivity
If data radio bearer establishment is required for data transfer, then reliable data transmission is ensured, but signaling overhead and delay increase
Solution Approach 1:
The patent extracts the data transfer functionality from the traditional LTE data radio bearer establishment process for small data transmissions. Instead of requiring full DRB setup, the system uses simplified NB-IoT transmission mechanisms that directly send small data packets without the overhead of complete bearer establishment. This extraction of essential data transfer capability while removing unnecessary setup procedures significantly reduces signaling overhead and connection setup time for small data applications.
Data Source
AI summary
Technology for an eNodeB operable to support Cellular Internet of Things (CIoT) is disclosed. The eNodeB can generate a system information block (SIB) that includes one or more indicators that one or more CIoT Evolved Packet System (EPS) optimizations are supported at the eNodeB. The eNodeB can encode, at the eNodeB, the SIB for transmission to a user equipment (UE) to enable the eNodeB to receive a request from the UE for a use of the CIoT EPS optimizations. The eNodeB can decode a radio resource control (RRC) connection setup complete message received from the UE. The RRC connection setup complete message can include one or more indicators that one or more CIoT EPS optimizations are supported at the UE.