Terminal FDD Mode Selection for IoT Latency and Data Rate
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Solution Overview
Problem
Current LTE technologies, such as Machine Type Communication (MTC) and Narrow Band Internet of Things (NB-IoT), struggle to meet the increasing data rate and low latency requirements of IoT services, particularly for applications like video surveillance, smart homes, and industrial sensing.
Innovation Solution
The proposed solution involves determining whether a terminal supports simultaneous downlink reception and uplink transmission, and then configuring the Frequency Division Duplex (FDD) mode accordingly. This allows the terminal to operate in either full-duplex or half-duplex FDD modes, depending on its capabilities and the specific communication requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If LTE technologies (MTC and NB-IoT) are used to support IoT services, then low-rate and high-latency scenarios are covered, but increasing data rate and low latency requirements cannot be met
Solution Approach 1:
The patent applies dynamics by enabling terminals to dynamically switch between half-duplex and full-duplex FDD modes based on their capability and service requirements. This dynamic adaptation allows the system to optimize data rate and latency performance for different IoT applications, moving from static LTE modes to flexible 5G NR modes that can meet increasing productivity demands.
2Productivity
If full-duplex FDD mode is used for simultaneous downlink reception and uplink transmission, then data rate and latency are improved, but terminal capability requirements increase
Solution Approach 1:
The patent segments the FDD operation into two distinct modes: half-duplex FDD for terminals with limited capability and full-duplex FDD for terminals with advanced capability. This segmentation allows the system to provide high data rates where needed while maintaining compatibility with simpler terminals, effectively managing device complexity through mode differentiation.
Solution Approach 2:
The patent changes the operational parameter of the terminal from fixed half-duplex mode to variable mode selection between half-duplex and full-duplex FDD. By allowing parameter change based on terminal capability indication, the system enables terminals to operate at higher productivity levels when capable, while simpler terminals continue to use lower-complexity modes.
3Device complexity
If half-duplex FDD mode is used for terminal operation, then device complexity is reduced, but data rate and latency performance deteriorate
Solution Approach 1:
The patent creates a universal FDD framework that encompasses both half-duplex and full-duplex operations within the 5G NR system. This multi-functionality allows the same terminal type to operate in different modes depending on service requirements and capability, providing a universal solution that adapts to various productivity needs without requiring entirely separate system designs.
Data Source
AI summary
A method for processing information is performed by a terminal, and includes: determining whether simultaneous downlink reception and uplink transmission are supported by the terminal; and determining a Frequency Division Duplex (FDD) mode in which the terminal operates according to a result of determining whether the simultaneous downlink reception and uplink transmission are supported by the terminal.