Policy Control System Dedicated Bearer Creation
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Solution Overview
Problem
Current wireless communication systems face challenges in managing and prioritizing network bandwidth for various services like VoIP and video streaming without access to specific application servers, limiting the ability to provide dedicated radio bandwidth and Quality of Service (QoS) due to the absence of interaction between mobile networks and these services.
Innovation Solution
A method and system that manage IP traffic by checking policy rules stored in a database associated with user identifiers, analyzing traffic packets, and creating dedicated bearers with specific QoS for media sessions between users and receiving equipment, allowing for prioritization and resource allocation without relying on complex architectures like IMS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional PCC functionality is used to manage network bandwidth, then policy rules can be enforced for services that implement IMS functionality, but mobile service providers cannot access application servers (e.g., IMS, video servers) to apply policy rules to services that do not implement IMS functionality
Solution Approach 1:
The patent introduces a mediation mechanism where the mobile network operator's policy control system acts as an intermediary between the radio access network and external application servers. The system intercepts and analyzes traffic packets to identify media sessions, then creates dedicated bearers with appropriate QoS parameters without requiring direct interaction between the application server and the PCC functionality. This mediator approach enables policy enforcement for services like video streaming that do not implement IMS functionality.
Solution Approach 2:
The system enables self-service by having the policy control system automatically analyze traffic packets, identify media sessions based on packet patterns and protocols, and create dedicated bearers without external intervention. The system autonomously retrieves policy rules from a database using user identifiers extracted from packets and applies appropriate QoS parameters, eliminating the need for application servers to implement specific functionality or exchange information with the PCC.
2Reliability
If dedicated bearers are created for media sessions, then Quality of Service can be guaranteed for IP traffic, but network resource allocation becomes more complex
Solution Approach 1:
The system performs preliminary actions by pre-configuring policy rules in a database that define QoS parameters for different types of media sessions. When a media session is detected through packet analysis, the system retrieves the pre-defined policy rules and applies them automatically, avoiding complex real-time QoS negotiation and simplifying resource management while ensuring reliable Quality of Service for identified media sessions.
Data Source
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AI summary
The present invention is relative to a method for controlling media communication session between a user (WTRU, 101) identified by a user identifier (302) and a receiving equipment (101, SIP server, Video server) via a core network (106) and a IP network (110,112) external to said core network, said user accessing said core network via a radio access network (RAN, 104) and said network including a gateway (PGW, 204) to said external IP network. The method includes the steps of: a. Checking, when said user (WTRU, 101) connects to said core network (106), a database (UPD 501) to retrieve policy rules applicable to said user according to the user identifier (301) and which relate to one or more media sessions; b. Identifying the establishment of a default bearer for said user (WTRU, 101) on said core network (106); c. Analyzing all traffic packets originating from or directed to said user between said access network (RAN 104) and said core network and/or a gateway (PGW, 204) to said external IP network (110,112); d. Checking the establishment of a requested media communication session between the user and the receiving equipment; e. Determining, for each packet belonging to the established media communication session, the type of media session requested and established, and the IP addresses and ports of said user and said receiving equipment, between which the media session is established; f. forcing such core network (106) and/or radio access network (RAN 104) and/or said gateway (PGW, 204) to create, if such policy rules allow, a dedicated bearer between said user and said gateway (PGW, 204) with Quality of Service for the packets belonging to the already established media session, said Quality of Service depending on the specific media session, said dedicated bearer being established between the IP addresses and related ports of the already established media session, said dedicated bearer being created on the basis of the information retrievable from said packets belonging to said established media session and said database (UDP 501).