Communication Control Device for D2D Discovery Signal Load Reduction
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Solution Overview
Problem
In device-to-device (D2D) communication, terminal devices face increased load due to frequent transmission and detection of discovery signals, as they do not know the timing of the discovery signal transmission, leading to high repetition frequencies and increased processing and power consumption.
Innovation Solution
A communication control device and method that acquires and controls radio frame information for transmitting discovery signals, allowing terminal devices to transmit and detect signals only within specific radio frames, reducing unnecessary transmissions and detections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device transmits the discovery signal at a high frequency of repetition to ensure detection, then the reliability of discovery signal detection is improved, but the load on the terminal device increases
Solution Approach 1:
The base station performs preliminary action by determining and notifying the terminal device of the specific radio frame for discovery signal transmission before the actual transmission occurs. This allows the terminal device to know in advance when to transmit and detect discovery signals, eliminating the need for high-frequency repeated attempts and reducing processing load while ensuring reliable detection.
2Reliability
If the terminal device conducts detection process at a high frequency of repetition to detect the discovery signal, then the discovery signal detection reliability is improved, but the power consumption increases
Solution Approach 1:
The base station provides advance notification to the terminal device about the specific radio frame timing for discovery signal transmission. This preliminary information allows the terminal device to schedule its detection process efficiently, conducting detection only at the notified timing rather than continuously at high frequency, thereby reducing power consumption while maintaining detection reliability.
3Reliability
If the terminal device transmits the discovery signal at a high frequency of repetition, then the discovery signal detection reliability is improved, but the processing load on the terminal device increases
Solution Approach 1:
The base station determines and notifies the specific radio frame for discovery signal transmission in advance. This preliminary action enables the terminal device to transmit and process discovery signals only at the notified timing, avoiding high-frequency repeated processing and significantly reducing the processing load on the terminal device while ensuring reliable discovery signal detection.
Data Source
AI summary
A communication control device including an acquisition unit configured to acquire radio resource information indicating a radio resource, the radio resource being a unit time of cellular communication, for transmitting a discovery signal enabling another device to discover a device conducting device-to-device communication, and a control unit configured to control transmission of the radio resource information to a terminal device The control device makes it possible to moderate load for a device conducting device-to-device communication (D2D communication).