D2D Relay Device Signal Strength Priority
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently relaying data between devices, particularly in extending message transmission range and enhancing throughput while managing resource allocation effectively in device-to-device communication scenarios.
Innovation Solution
A method and device for transmitting data in a wireless communication system that supports device-to-device communication, where messages are prioritized based on received signal strength and relayed to a target device using a calculated signal strength value, with the option to adjust resource allocation and include indicators for transmission decisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If data is relayed from multiple terminals through a first device to a second device, then message transmission range is extended, but resource allocation complexity increases
Solution Approach 1:
The patent applies parameter changes by prioritizing relayed data based on received signal strength indicators (RSSI). The first device receives data from multiple terminals, measures the RSSI for each transmission, and relays data in descending order of signal strength. This parameter-based prioritization simplifies resource allocation decisions while extending transmission range through selective relaying of high-quality signals.
Solution Approach 2:
The patent implements local quality by evaluating and prioritizing individual data transmissions based on their specific signal characteristics. Each received data packet is assessed locally at the first device using RSSI measurements, and relay decisions are made based on local signal quality conditions rather than uniform treatment of all incoming data.
2Productivity
If signal strength-based prioritization is used for relaying data, then system throughput is enhanced, but measurement and decision complexity increases
Solution Approach 1:
The patent applies self-service by enabling the first device to autonomously perform RSSI measurements and relay prioritization without external intervention. The device automatically measures signal strength for incoming data from multiple terminals, compares the measurements, and independently decides the relay priority order, reducing the need for complex centralized control or additional signaling overhead.
3Area of stationary object
If data relay is performed for terminals outside coverage, then communication coverage is extended, but energy consumption increases
Solution Approach 1:
The patent uses parameter changes by prioritizing relay operations based on received signal strength. The first device measures RSSI for data from multiple terminals and relays only those with sufficiently strong signals, using signal strength as the key parameter to determine which relay operations are worth the energy expenditure. This selective approach extends coverage while managing energy consumption.
Data Source
AI summary
The present invention relates to a method and a device for transmitting data by a first device in a wireless communication system that supports direct device-to-device communication, wherein one or more messages are received from multiple devices, at least one message among the one or more messages is transmitted to a second device on the basis of priority, and the priority is determined in such an order that a message having the lowest first received signal strength has the highest priority, the first received signal strength indicating the received signal strength of the one or more messages.