MTC Terminal Device MIB Reception for Low-Complexity Communication
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Solution Overview
Problem
Existing communication systems face challenges in efficiently managing channel state information for Machine Type Communication (MTC) devices, which have limited functionality and performance compared to traditional LTE terminals, leading to difficulties in realizing cost-effective and low-complexity communication solutions.
Innovation Solution
A terminal device and base station device configuration that includes a reception unit for receiving a Master Information Block (MIB) and System Information Block (SIB) specific to MTC, with the base station transmitting a Physical Broadcast Channel (PBCH) containing a bit associated with MTC, allowing for efficient communication by setting up a physical channel configuration specific to MTC in a predetermined subframe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing communication systems use standard LTE protocols for all terminals, then communication reliability is maintained, but device complexity and cost increase for MTC devices with limited capabilities
Solution Approach 1:
The patent segments the system into two distinct parts: standard LTE terminals that follow conventional protocols, and MTC terminals that use a simplified protocol set. This segmentation allows MTC devices to operate with reduced complexity while maintaining reliable communication through dedicated lightweight protocols designed specifically for their capabilities
Solution Approach 2:
The patent applies local quality by creating specialized communication protocols tailored to MTC device characteristics. Instead of using uniform LTE protocols everywhere, the system implements locally optimized protocols for MTC terminals that match their specific hardware constraints and operational requirements
2Device complexity
If MTC devices use simplified communication protocols, then device complexity is reduced, but communication efficiency and transmission quality deteriorate
Solution Approach 1:
The patent changes key communication parameters specifically for MTC devices, such as using extended cyclic prefixes for robustness in challenging radio conditions, adjusting subframe structures for periodic reporting, and modifying resource allocation patterns. These parameter changes maintain communication efficiency despite simplified device complexity
3Loss of information
If standard LTE system information blocks are used for all terminals, then information completeness is maintained, but information transmission efficiency decreases for MTC devices
Solution Approach 1:
The patent extracts and separates MTC-specific system information from the standard LTE system information blocks. By creating dedicated SIBs for MTC terminals containing only the information relevant to their operation, the system avoids transmitting unnecessary data to MTC devices, thereby reducing information transmission time while maintaining completeness of essential information
Data Source
AI summary
A terminal device configured to communicate with a base station device, and the terminal device includes: a reception unit configured to receive an MIB from a PBCH, and in a case where, from the MIB, a bit indicating support for MTC is set to a predetermined value, the reception unit receives, from a given subframe, the MTC including a physical channel configuration associated with the MTC.