Differential QoS EPS Bearer Module for LTE Packet Prioritization
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Solution Overview
Problem
The increasing number of subscribers and data bandwidth in LTE networks leads to traffic congestion, data packet delay, and loss, impacting quality of service (QoS) due to the lack of guaranteed bit rates and prioritization in default EPS bearers, while dedicated EPS bearers prioritize data packets but deprioritize others.
Innovation Solution
A method and system that involves obtaining bearer connection context parameters, computing QoS attributes, and forming priority queues to schedule data packets based on throughput parameters, using a differential QoS EPS bearer module with a pre-emption round robin scheduler to improve QoS by prioritizing and managing data packets effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If default EPS bearers are used to provide basic connectivity, then device compatibility and ease of operation are improved, but data packet delay and loss increase due to lack of prioritization
Solution Approach 1:
The patent segments data packets into different priority queues based on QoS requirements. High priority packets are separated from low priority packets and processed differently, allowing critical packets to be handled with urgency while maintaining basic connectivity for all devices through default bearers.
Solution Approach 2:
The patent dynamically changes the priority parameter of data packets based on their QoS requirements. By computing QoS attributes and assigning priority levels, the system transforms static default bearer treatment into dynamic priority-based processing, improving reliability without sacrificing compatibility.
2Reliability
If dedicated EPS bearers are used to ensure guaranteed bit rate for high priority applications, then QoS for specific applications is improved, but data packet delay and loss increase for other applications due to de-prioritized treatment
Solution Approach 1:
The patent applies local quality by providing different priority treatments to different packets based on their specific QoS requirements. Instead of uniform treatment, each packet receives quality appropriate to its needs, allowing high priority packets to be expedited while low priority packets are handled efficiently without unnecessary resource allocation.
Solution Approach 2:
The patent applies partial action by providing priority processing only to packets that require it, rather than all packets. This selective approach ensures high priority applications receive guaranteed bit rate treatment while other applications are processed efficiently without excessive resource allocation, reducing overall delay.
3Reliability
If priority processing is applied to data packets in PDN GW/SGW, then QoS for prioritized packets is improved, but device complexity increases due to additional processing requirements
Solution Approach 1:
The patent performs preliminary action by computing QoS attributes and determining priority levels early in the packet processing pipeline. By establishing priority before packets reach the PDN GW/SGW, the system reduces the complexity of subsequent processing, as packets are already categorized and can be handled by simpler queueing mechanisms.
Data Source
AI summary
A method and system for improving quality of service (QoS) in a wireless network are disclosed. In one embodiment, bearer connection context parameters of each of a plurality of data packets in the wireless network are obtained. Further, general packet radio service tunneling protocol user plane protocol data unit (G-PDU) packets are determined in the plurality of data packets based on first bearer connection context parameters which is a subset of the bearer connection context parameters. Furthermore, the determined G-PDU packets are queued in a non-signaling queue. QoS attributes are then computed for each of the queued G-PDU packets. In addition, priority data is computed for each of the queued G-PDU packets is computed using the computed QoS attributes. Moreover, one or more priority queues are formed based on the computed priority data of each of the queued G-PDU packets for improving QoS in the wireless network.