D2D Service Provision via Interest-Based Session Selection
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Solution Overview
Problem
Existing device-to-device communication methods are inefficient as they require forming a network for all devices, leading to significant overhead, especially when numerous devices are involved, and lack standardization and procedures for selectively providing services to interested devices.
Innovation Solution
A method and device for selectively providing services to devices interested in specific services through device-to-device communication, involving determining service interest, establishing session connections, and inviting participating devices, which reduces network overhead and improves user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all devices are peer to peer connected in a PHY/MAC layer to form a network, then service availability is improved, but network overhead increases enormously especially when more than several hundreds of devices are on the network
Solution Approach 1:
The patent extracts the network formation requirement from the service provision process. Instead of requiring all devices to form a complete peer-to-peer network, the invention allows service provision to occur through direct device-to-device communication without full network formation, thereby eliminating the excessive overhead while maintaining service availability
Solution Approach 2:
The patent segments the communication process into two distinct phases: service interest indication (without network formation) and service provision (with selective connection). This segmentation allows devices to indicate service interests independently before establishing connections, reducing the overhead of forming complete networks among all devices
2Reliability
If a new network is formed or device participates in existing network before service provision, then service connectivity is ensured, but service provision time is increased
Solution Approach 1:
The patent implements preliminary action by having devices indicate their service interests in advance through broadcast messages before actual service provision. This allows the serving device to identify interested devices ahead of time and establish connections only with those devices, rather than requiring all devices to form networks first
Solution Approach 2:
The patent inverts the traditional approach by allowing service interest indication without requiring network participation first. Instead of requiring devices to join networks before indicating interest, the invention allows interest indication through broadcast messages that can be received without network formation, then establishes connections based on indicated interests
Data Source
AI summary
The present invention provides a method for providing a service to a device having an interest in a specific service in a device-to-device (D2D) condition. The method includes: searching for a device which enters into an area managed by a device which provides the specific service; and identifying an interest of the searched device in the specific service and inviting the searched device to participate in the specific service. In the method, by selectively connecting a session based on a service interest, an efficient management in view of an entire network capacity is possible and an advantage of reducing a time for session connection is achieved.