Wireless Priority Service Authorization via SIP Code
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Solution Overview
Problem
Current 4G/5G wireless communication environments face inefficiencies in Wireless Priority Service (WPS) authorization due to the requirement for the *272 dialing prefix, which is not supported by all smartphones through their exposed telephony APIs.
Innovation Solution
A Session Initiation Protocol (SIP) server transfers a WPS authorization code to a WPS communication device, which then sends a SIP message to the SIP server for authorization, eliminating the need for the *272 dialing prefix and enhancing WPS communication efficiency by using network addressing and Quality-of-Service (QoS) selection based on the authorization code.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the *272 dialing prefix is used for WPS authorization, then WPS quality-of-service can be delivered, but smartphones without * symbol support through their exposed telephony APIs cannot initiate WPS calls
Solution Approach 1:
The patent extracts the *272 dialing prefix requirement from the WPS initiation process and replaces it with an authorization code mechanism. The SIP client obtains a WPS authorization code through an API call to the WPS authorization server, eliminating the need for the *272 prefix in the SIP INVITE message to the PSTN gateway.
Solution Approach 2:
The patent introduces a WPS authorization server as an intermediary between the SIP client and the PSTN gateway. This server issues authorization codes that mediate the WPS service access, replacing the direct *272 prefix-based authorization mechanism with a coded authorization approach that can be implemented through standard telephony APIs.
2Productivity
If WPS authorization uses the current 4G/5G wireless communication environment with *272 prefix, then existing WPS infrastructure can be maintained, but authorization efficiency and effectiveness are reduced
Solution Approach 1:
The patent implements preliminary action by obtaining the WPS authorization code before initiating the SIP call to the PSTN gateway. The SIP client calls the WPS authorization server API to obtain the authorization code in advance, which is then included in the SIP INVITE message header, streamlining the authorization process and improving efficiency.
Solution Approach 2:
The patent changes the authorization parameter from a dialing prefix (*272) to an authorization code issued by the WPS authorization server. This parameter change allows the authorization mechanism to work within standard telephony APIs while maintaining WPS service quality and effectiveness in 4G/5G wireless communication environments.
Data Source
AI summary
A wireless data communication network authorizes Wireless Priority Service (WPS) communications. A Session Initiation Protocol (SIP) server transfers a WPS authorization code to a WPS communication device. The WPS communication device transfers a WPS SIP message to a SIP server. The WPS SIP message has the WPS authorization code and a WPS session request. The SIP server authorizes the WPS SIP message based on the WPS authorization code. When the WPS SIP message is authorized, the SIP server system identifies network addressing based on the WPS session request. The SIP server system transfers a response message to the WPS communication device that identifies the network addressing. The WPS communication device wirelessly transfers WPS data over the WPS session using the network addressing.