eNB Voice Packet Dropping for LTE Data Capacity
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Solution Overview
Problem
Current LTE networks prioritize voice traffic over data traffic, leading to network congestion and increased packet loss for data services during peak usage, which negatively impacts user experience.
Innovation Solution
An evolved Node B (eNB) randomly drops voice packets when network congestion is detected, below a threshold that does not degrade voice quality, to increase network capacity for data packets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voice traffic is prioritized over data traffic, then voice service quality is improved, but data packet transmission deteriorates during network congestion
Solution Approach 1:
The patent implements dynamic traffic prioritization by enabling the eNB to switch between voice-priority mode and data-priority mode based on real-time network conditions. When network congestion is detected, the system dynamically changes scheduling behavior to prioritize data traffic, thereby resolving the contradiction between maintaining voice quality and ensuring data transmission efficiency.
Solution Approach 2:
The system changes the scheduling parameter priorities based on network state. During normal conditions, voice traffic receives higher scheduling priority; during congestion, the priority parameters are adjusted to favor data traffic. This parameter change allows the system to adapt to different network states and resolve the performance trade-off.
2Productivity
If network capacity is increased for data packets, then data service performance is improved, but voice packet loss increases
Solution Approach 1:
The system performs preliminary detection of network congestion conditions and proactively adjusts scheduling priorities before severe packet loss occurs. By detecting congestion early and switching to data-priority mode in advance, the system can increase data capacity while implementing compensatory measures to protect voice service quality.
Solution Approach 2:
The eNB continuously monitors network congestion conditions and uses this feedback to dynamically adjust scheduling decisions. When congestion is detected, the system feedback-driven switching to data-priority mode, and can revert to voice-priority mode when conditions improve, thereby balancing data capacity needs with voice service reliability.
3Reliability
If strict voice traffic prioritization is maintained, then voice quality is preserved, but overall network utility deteriorates during peak usage
Solution Approach 1:
The patent introduces dynamic adaptability to network conditions by enabling the eNB to switch scheduling priorities based on real-time congestion detection. This dynamic behavior allows the system to maintain voice quality during normal operation while adapting to prioritize data traffic during peak usage, thereby improving overall network utility without sacrificing voice service reliability.
Solution Approach 2:
The scheduling system is designed to perform multiple functions: it can prioritize voice traffic when needed, prioritize data traffic when needed, and adapt to different network conditions. This multi-functionality allows the system to serve both voice and data services effectively under varying conditions, enhancing overall network utility while preserving voice quality.
Data Source
AI summary
A device receives, from mobile devices, scheduling requests for voice packets, and assigns grants to the scheduling requests. The device further determines whether there is network congestion in a network associated with the device. The device also selects a grant, from the grants, when there is network congestion, and drops a voice packets associated with the selected grant. The device assigns physical resource blocks (PRBs) to one or more of the grants that are associated with one or more of the voice packets that are not dropped.