Reader-Device ON/OFF Synchronization for Efficient 5G IoT Channels
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Solution Overview
Problem
The increasing demand for wireless data traffic necessitates improvements in radio interface efficiency and coverage, particularly in 5G communication systems, to support various vertical applications and overcome propagation losses in higher frequency bands.
Innovation Solution
Implementing apparatuses and methods for transmitting and receiving signals between a reader and a device using time-domain ON/OFF patterns, including control information and payload, with synchronization mechanisms for physical channels, to optimize data transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If 5G communication systems use higher frequency bands to meet increasing wireless data traffic demand, then data transmission capacity and speed are improved, but propagation losses increase and coverage deteriorates
Solution Approach 1:
The communication protocol is segmented into distinct phases (synchronization signal transmission, control information reception, data transmission) with dedicated time slots and frequency resources. This segmentation allows optimized parameter selection for each phase, improving overall transmission efficiency and coverage in higher frequency bands
2Device complexity
If traditional communication protocols are used for IoT devices, then device complexity is reduced, but radio interface efficiency and coverage are insufficient
Solution Approach 1:
The protocol enables self-synchronized operation where IoT devices autonomously detect synchronization signals and adjust their timing without complex external coordination. The fixed duration synchronization pattern allows devices to self-align for optimal reception, improving radio interface efficiency while maintaining low device complexity
Solution Approach 2:
The patent introduces a fixed duration synchronization pattern with specific timing parameters that optimize the reception window for control information and data. By changing the temporal parameters of signal transmission and reception, the system achieves improved coverage and efficiency without increasing device complexity
3Reliability
If synchronization signals are transmitted continuously to maintain timing accuracy, then reception reliability is improved, but energy consumption increases
Solution Approach 1:
Instead of continuous transmission, the synchronization signal is transmitted periodically with a fixed duration pattern. This periodic action maintains timing accuracy for the critical reception window while allowing energy savings during non-critical periods, balancing reliability and energy consumption
Data Source
AI summary
Apparatuses and methods for transmitting and receiving a signal between a reader and a device. A method for an Internet of Things (IoT) device to communicate with a reader includes receiving a first signal indicating a start of reader-to-device (R2D) reception, receiving a second signal providing synchronization for the reception of a physical reader-to-device channel (PRDCH), and receiving the PRDCH. The first signal and the second signal are patterns including ON/OFF states in time domain. The PRDCH includes at least one of control information related to R2D reception or device-to-reader (D2R) transmission and a payload providing R2D data. The method further includes determining, based on the reception of the PRDCH, parameters related to D2R transmission including a size of a payload providing D2R data, transmitting a third signal providing synchronization for the reception of a physical device-to-reader channel (PDRCH), and transmitting the PDRCH including the payload providing D2R data.