D2D Resource Allocation via Per-Packet Priority Mapping
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Solution Overview
Problem
Current wireless communication networks face challenges in efficiently prioritizing and managing network resources for device-to-device (D2D) communication, particularly in public safety networks where stringent reliability and security are required, and in commercial networks where different service types like voice, video, and data need prioritization.
Innovation Solution
The implementation of a method that allocates radio resources for D2D communication using Quality-of-Service Class Identifiers (QCIs) and resource pools, allowing for priority handling through per-packet priorities mapped to transmission priorities, enabling efficient resource allocation and preemption mechanisms to ensure higher priority traffic is prioritized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If D2D communication uses shared radio resources without priority handling, then resource utilization is improved, but network reliability and service quality deteriorate due to inability to prioritize critical traffic
Solution Approach 1:
The patent applies local quality by assigning different priority levels to different packets based on their service requirements. Each packet is tagged with a priority indicator that determines its treatment in resource allocation, allowing critical packets to receive preferential handling while non-critical packets use shared resources, thus maintaining both high resource utilization and network reliability
Solution Approach 2:
The patent changes the parameter of packet identification by introducing priority indicators and mapping them to QCIs. This parameter change enables the system to differentiate between packets and apply appropriate priority handling, resolving the contradiction between shared resource utilization and reliable service delivery
2Reliability
If D2D communication implements priority handling with multiple QCIs, then service quality and traffic prioritization are improved, but system complexity increases due to mapping and management overhead
Solution Approach 1:
The patent applies universality by using QCIs, which are existing LTE parameters for QoS management, to serve dual purposes: maintaining backward compatibility with LTE infrastructure and enabling priority handling for D2D packets. This multi-functionality approach avoids creating entirely new complex systems while achieving service quality improvement
Solution Approach 2:
The patent introduces an intermediary mapping mechanism between packet priority indicators and QCIs. This intermediary layer simplifies the system by providing a standardized translation layer that handles priority management without requiring complex device-specific implementations, thus reducing overall system complexity
3Quantity of substance
If D2D packets are transmitted without per-packet priority indication, then transmission overhead is reduced, but ability to prioritize critical traffic in public safety networks deteriorates
Solution Approach 1:
The patent applies segmentation by dividing the priority indication into discrete priority indicators that can be attached to individual packets. This segmentation allows the system to add minimal overhead information to each packet while maintaining the ability to prioritize critical traffic, balancing overhead reduction with prioritization capability
Data Source
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AI summary
A wireless communication device is configured to perform resource access in device-to-device (D2D) communication. A user equipment (UE) is provided with processing hardware comprising application processing circuitry and baseband processing circuitry. The application processing circuitry assigns a per-packet priority to data packets in the application layer. The baseband processing circuitry maps the per-packet priority to a transmission priority in the physical layer and prioritizes access to a wireless resource pool depending upon the transmission priority. A UE having the application processing circuitry and baseband processing circuitry is also provided. A computer program product is also provided. An evolved Node B (eNodeB) allocates a resource quota to a UE based upon priority information from the UE corresponding to a D2D communication to be transmitted by the UE. Other embodiments may be described and claimed.