P-CSCF ENUM Integration for Faster and Cleaner Call Routing
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Solution Overview
Problem
The lack of a direct connection between the Proxy Call Session Control Function (P-CSCF) and the ENUM service in cellular networks leads to increased latency and complexity in call setup times, as well as potential leakage of proprietary information, due to unnecessary parameters being sent across peering interfaces.
Innovation Solution
Integrating P-CSCF with ENUM for direct querying of Uniform Resource Identifiers (URIs) within the network, allowing P-CSCF to perform ENUM lookups independently, thereby reducing reliance on other network elements and streamlining call routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If P-CSCF queries ENUM database directly, then call setup time is reduced, but network complexity increases
Solution Approach 1:
The patent merges the P-CSCF function with ENUM database querying capability by implementing a direct connection between these previously separate network elements. The P-CSCF is configured to perform ENUM lookups directly without requiring intermediate routing through other network elements, thereby reducing call setup time while the integration is designed to maintain manageable network complexity through standardized protocols
Solution Approach 2:
The patent introduces a direct intermediary connection between the P-CSCF and the ENUM database, eliminating the need for indirect routing through other network elements. This direct intermediary path allows for faster query resolution and reduces the number of hops in the call setup process, addressing the time loss issue without requiring complex reconfiguration of the entire network architecture
2Productivity
If P-CSCF queries ENUM database directly, then network efficiency is improved, but information leakage risk increases
Solution Approach 1:
The patent extracts and processes only the necessary information required for call routing by having the P-CSCF perform selective ENUM lookups. The system extracts only the essential mapping data needed for call setup while filtering out unnecessary parameters that could potentially leak proprietary network information, thereby improving efficiency without compromising information security
Solution Approach 2:
The patent applies local quality control by having the P-CSCF perform ENUM queries with specific, localized parameters tailored to the call routing requirement. The system queries only the specific ENUM data needed for the destination address resolution, rather than broadcasting or exposing broader network information, thus improving local processing efficiency while preventing information leakage to unauthorized entities
3Ease of operation
If P-CSCF performs ENUM lookups independently, then call routing is streamlined, but network reliability may be affected
Solution Approach 1:
The patent implements multi-functionality in the P-CSCF by enabling it to perform both traditional call session control functions and ENUM database querying operations. This universal capability allows the P-CSCF to handle call routing independently through direct ENUM lookups, streamlining the routing process while maintaining network reliability through the use of standardized, well-tested ENUM protocols and database structures
Data Source
AI summary
Systems and methods are provided for integrating P-CSCF with ENUM for enhanced network functionality. An example method may include receiving, at a proxy server, a request to make a connection from a wireless device to a destination device. The method may further include querying, directly by the proxy server, a database for a URI of the destination device, wherein the database comprises mappings of phone numbers to URIs.