Wireless D2D Data Synchronization via Segmented Discovery Codes
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Solution Overview
Problem
Conventional Bluetooth technology limits the number of devices that can provide service simultaneously due to the necessity of pairing operations and synchronization, making it unsuitable for broadcasting services that require unlimited device participation.
Innovation Solution
A method and apparatus for transmitting and receiving synchronized data in a wireless communication system supporting D2D communication, where a transmission device divides video data and related media into a single container and transmits video-related data with output timing information to a reception device, allowing the reception device to synchronize video and related data, such as audio or text, with the video data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pairing operations are performed to synchronize operation clocks and frequency patterns between transmission and reception devices, then reliable data transmission is achieved, but the number of devices that can provide service simultaneously is limited
Solution Approach 1:
The patent segments the synchronization process by having the reception device store operation clock and frequency pattern information from discovery codes, eliminating the need for real-time pairing synchronization. This allows multiple reception devices to independently synchronize with a single transmission device without mutual interference, resolving the contradiction between reliable transmission and multi-device support.
Solution Approach 2:
The transmission device performs preliminary synchronization by embedding operation clock and frequency pattern information in discovery codes during the discovery phase. Reception devices obtain this information in advance through discovery operations, enabling them to synchronize without undergoing time-consuming pairing processes, thus supporting unlimited simultaneous devices while maintaining transmission reliability.
2Stability of the object's composition
If pairing operations are required to establish connections between transmission and reception devices, then synchronized communication is achieved, but the system becomes unsuitable for broadcasting services requiring unlimited device participation
Solution Approach 1:
The patent separates the synchronization function from the connection establishment process. Reception devices obtain synchronization information (operation clock, frequency pattern) independently through discovery code reception, rather than through joint pairing operations. This segmentation enables stable synchronized communication while allowing unlimited device participation in broadcasting services.
Solution Approach 2:
Each reception device performs self-synchronization by extracting and storing operation clock and frequency pattern information from discovered transmission devices. This self-service mechanism eliminates the need for centralized pairing coordination, enabling unlimited devices to independently join broadcasting services while maintaining synchronized communication.
3Reliability
If conventional Bluetooth pairing process is used for device connection, then secure one-to-one communication is established, but the complexity of the connection process increases and limits scalability
Solution Approach 1:
The patent extracts the essential synchronization elements (operation clock, frequency pattern) from the complex pairing process and embeds them directly in discovery codes. This extraction eliminates unnecessary pairing steps while retaining the core synchronization function, reducing connection complexity and enabling scalable broadcasting services without compromising communication reliability.
Data Source
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AI summary
The present disclosure relates to a 5G or pre-5G communication system for supporting a data transmission rate higher than that of a 4G communication system, such as LTE, and subsequent systems. According to one embodiment of the present disclosure, a method by which a transmission device transmits data in a wireless communication system for supporting device-to-device communication comprises the steps of: separating, from one video container data, video data and video-related data simultaneously outputted together with the video data; outputting the video data; and generating a message including the information related to the time at which the video-related data and the video data are outputted, so as to transmit the generated message to a reception device.