Wearable Device Power Saving via User Terminal Data Relay
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Solution Overview
Problem
Wearable devices in wireless communication systems face challenges in reducing power consumption, especially in IoT environments where MTC devices require efficient low-power communication and data routing/forwarding methods to manage diverse data types and operating modes.
Innovation Solution
The proposed solution involves pre-registering coupling information between a wearable device and a user terminal, allowing data to be transmitted to the user terminal instead of the wearable device when in power-saving mode, and using short-range communication to minimize power consumption, with the application server controlling data routing based on the type and state of the wearable device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wearable device directly receives data through network communication, then data delivery reliability is improved, but power consumption increases
Solution Approach 1:
The patent introduces a user terminal as an intermediary device between the network and the wearable device. When the wearable device is in power-saving mode, the user terminal receives data from the network and forwards it to the wearable device via short-range communication, thereby maintaining data delivery reliability while reducing the wearable device's power consumption.
Solution Approach 2:
The patent implements preliminary registration of coupling information between the wearable device and user terminal before the wearable device enters power-saving mode. This pre-configuration enables seamless data forwarding without requiring the wearable device to maintain active network connection, thus ensuring reliable data delivery while minimizing power consumption.
2Use of energy by moving object
If wearable device operates in power-saving mode, then power consumption is reduced, but data reception capability deteriorates
Solution Approach 1:
The user terminal serves as a mediator that maintains the data reception capability while the wearable device operates in power-saving mode. The user terminal stays connected to the network, receives data, and transfers it to the wearable device through short-range communication, thus preserving data reception capability without requiring the wearable device to remain active.
Solution Approach 2:
The patent creates a functional copy of the data reception capability in the user terminal. Instead of requiring the wearable device itself to receive data, the user terminal performs the reception function and replicates the data delivery to the wearable device, maintaining capability while reducing power consumption.
3Productivity
If coupling information is pre-registered for data routing, then data forwarding efficiency is improved, but system complexity increases
Solution Approach 1:
The patent implements preliminary registration of coupling information between wearable devices and user terminals before actual data transmission. This pre-configuration stores the mapping relationships in advance, enabling efficient data forwarding without real-time discovery or negotiation, thus improving forwarding efficiency while keeping the complexity manageable through one-time setup.
Data Source
AI summary
The present invention relates to a technology for a sensor network, machine to machine (M2M) communication, machine type communication (MTC), and the Internet of things (IoT). The present invention may be utilized for an intelligent service (smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety-related service, etc.) on the basis of the technology. The present invention relates to a communication method and apparatus for a wearable device in a wireless communication system. The communication method of the present invention comprises the steps of: linking the wearable device to a user terminal located in a short range within which communication with the wearable device is possible, in order to communicate with the user terminal; and when the wearable device is operating in a power-saving mode, receiving, through the user terminal, data of the wearable device, which is transmitted on the basis of coupling information between the user terminal and the wearable device in a network.