D2D Communication Mechanism Bypassing Serving Gateway
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Solution Overview
Problem
Wireless networks experience congestion during high traffic periods due to inefficient data paths when device-to-device (D2D) connections are established between users associated with different wireless transmission nodes, leading to bottlenecks in the network.
Innovation Solution
Implementing a mechanism to detect D2D traffic and proximity between devices, using a detection function module to optimize data paths by configuring a direct connection between eNodeBs, thereby bypassing the serving gateway and reducing network congestion through the establishment of a backhaul link between eNodeBs for direct device-to-device communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is transmitted through the serving gateway in traditional wireless network paths, then network coverage and connectivity are maintained, but network congestion increases and data rates decrease during high traffic periods
Solution Approach 1:
The patent segments the traditional wireless network data path into two types: conventional paths through the serving gateway for normal traffic, and direct device-to-device paths for high-priority or local traffic. This segmentation allows traffic to be routed differently based on needs, reducing congestion on the gateway path while maintaining connectivity.
Solution Approach 2:
The patent introduces a direct communication link as an intermediary path between devices, bypassing the serving gateway for specific traffic flows. This intermediary direct path reduces the load on the gateway while maintaining network connectivity and coverage through the original gateway path for other traffic.
2Device complexity
If device-to-device communication is established to reduce network congestion, then data rates increase and overhead decreases, but network complexity and detection requirements increase
Solution Approach 1:
The patent implements a feedback mechanism where the network detects D2D traffic flows and provides control messages to establish direct paths. The network monitors traffic patterns, identifies suitable D2D candidates, and dynamically configures direct communication links based on detected needs, reducing overhead while managing complexity through automated detection and control.
3Reliability
If direct device-to-device paths are established, then network latency is reduced and throughput increases, but reliability and connection management become more challenging
Solution Approach 1:
The patent makes the network path dynamic by allowing switches between conventional gateway-based paths and direct device-to-device paths based on traffic conditions, device proximity, and network state. This dynamic path selection optimizes throughput by using direct paths when beneficial while maintaining reliability through fallback to gateway paths when needed.
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AI summary
Technology for enabling device-to-device (D2D) communication in a wireless network is disclosed. One method comprises receiving a traffic flow optimization message at a first transmission node in the wireless network from a detection function (DF) module. A D2D setup message can be transmitted from the first transmission node to establish a D2D link, wherein the D2D link bypasses a serving gateway for the wireless network and provides communication between a first wireless device and a second wireless device.