D2D Session Connectivity via Location Database and Intermediary
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Solution Overview
Problem
Current device-to-device (D2D) communication sessions in wireless-enabled environments face challenges such as devices being unaware of capable communication partners, delays in session setup, and unsuccessful sessions due to signal interference or proximity issues, despite devices being in range.
Innovation Solution
A client node maintains a database with location and ID information of other nodes, updates this information, and initiates D2D sessions by sending test messages to determine viable communication ranges, allowing for direct communication without network intervention, using MIMO, CoMP, IC, and relaying configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If device-to-device sessions are performed without network routing, then network congestion is reduced, but devices are unaware of capable communication partners
Solution Approach 1:
The SSUF acts as an intermediary that maintains location information databases and assists devices in finding communication partners. It broadcasts availability information and receives page messages to facilitate D2D connections without requiring continuous network routing of data traffic.
Solution Approach 2:
Devices autonomously initiate D2D sessions by sending page messages to the SSUF with their identification and desired target device identification. The SSUF then broadcasts page messages to request desired devices to listen, enabling devices to self-manage connection initiation.
2Reliability
If SSUF administers inter-device communication channels, then interference is managed, but session setup delays occur
Solution Approach 1:
The SSUF pre-maintains location information databases and broadcasts inter-device communication channel availability information within a cell before sessions are needed. This preliminary preparation enables faster session establishment when devices need to connect.
Solution Approach 2:
The system implements a feedback mechanism where devices send page messages to the SSUF requesting connection assistance, and the SSUF responds by broadcasting page messages to request desired devices to listen. This structured feedback loop streamlines the session setup process.
3Ease of operation
If devices rely on proximity for D2D sessions, then direct communication is enabled, but sessions fail due to signal interference or shadowing
Solution Approach 1:
The SSUF serves as a mediator that manages interference and monitors communication conditions. It administers inter-device communication channels to manage interference, using its centralized position to coordinate channel usage and reduce signal interference and shadowing effects.
Data Source
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AI summary
Devices and methods are provided for managing device-to-device (D2D) communications session in a wireless-enabled communication environment. A first client node comprises a database containing location and ID information associated with a plurality of second client nodes. The location information in the database is updated as individual second client nodes change their location. As the location information is updated, it is processed by the first client node to determine the distance between it and an individual second client node. If the distance between the first client node and the individual second client node is within a viable D2D communications range, then the user of the first client node is notified that a D2D communications session can be initiate with the individual second client node.