Subscriber Priority QoS Allocation in IMS Networks
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Solution Overview
Problem
The existing IP Multimedia Subsystem (IMS) systems face inefficiencies in managing Quality of Service (QoS) allocation, particularly in scenarios where multiple real-time Packet Data Protocol (PDP) contexts are maintained, leading to high resource utilization and potential service limitations for subscribers.
Innovation Solution
A method and system that prioritize subscribers based on their subscription details to optimize QoS allocation, specifically by assigning traffic classes such as 'background', 'interactive', and 'conversational' within the 3GPP specifications, and indicate the appropriate QoS to user equipment during service requests, with priority information stored in databases or modules like the home subscriber server and user identity modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If every subscriber maintains one or more real-time Packet Data Protocol (PDP) contexts at the same time, then service availability and responsiveness are improved, but packet core and radio resources are excessively consumed
Solution Approach 1:
The patent applies local quality by assigning different QoS priorities to different subscribers based on their subscription details. Instead of treating all subscribers uniformly, the system differentiates resource allocation locally for each subscriber, allowing high-priority subscribers to maintain PDP contexts while low-priority subscribers share or release resources, thus resolving the contradiction between service availability and resource consumption.
Solution Approach 2:
The patent changes the parameter of QoS priority assignment dynamically based on subscriber subscription details. By adjusting the priority parameter for different subscribers and services, the system optimizes resource allocation - high-priority subscribers receive guaranteed PDP context maintenance while low-priority subscribers have their contexts released or shared, thereby balancing service reliability with resource efficiency.
2Ease of operation
If Quality of Service is allocated uniformly to all subscribers, then service fairness is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent implements local quality by transitioning from uniform QoS allocation to differentiated allocation based on subscriber subscription details. Each subscriber receives QoS treatment tailored to their service level agreement, allowing the system to maintain fairness for high-priority subscribers while optimizing overall resource utilization by releasing or sharing resources with low-priority subscribers.
Solution Approach 2:
The patent introduces dynamics by making QoS allocation flexible and adaptive rather than static and uniform. The system dynamically adjusts resource allocation based on current network conditions, subscriber priorities, and service requirements, enabling fair treatment for priority subscribers while improving overall resource utilization efficiency through conditional resource sharing or release.
3Adaptability or versatility
If multiple PDP contexts are maintained for each subscriber, then service capability and flexibility are improved, but network resource consumption increases
Solution Approach 1:
The patent applies local quality by allowing different subscribers to maintain different numbers of PDP contexts based on their subscription priority. High-priority subscribers can maintain multiple PDP contexts for enhanced service capability and flexibility, while low-priority subscribers have their contexts released or shared, thereby maintaining service capability where needed while reducing overall network resource consumption.
Solution Approach 2:
The patent implements partial action by allowing only high-priority subscribers to maintain full sets of PDP contexts, while low-priority subscribers receive partial resource allocation. This selective approach ensures that service capability and flexibility are maintained for subscribers who need them most, while avoiding excessive resource consumption across the entire subscriber base.
Data Source
AI summary
A communication method manages the allocation of Quality of Service using a communication network having an application server providing services and user equipment operated by subscriber The method also includes prioritizing a subscriber according to their subscription details for each service provided. The method also includes allocating Quality of Service for a service provided to user equipment according to the priority of a subscriber operating the respective user equipment.