Home Radio Subsystem Registration Recovery via Triggering Message
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Solution Overview
Problem
In wireless communication networks, particularly in public safety sectors using P25 and ETSI DMR standards, there is a need to efficiently recover registration information at a Home Radio Frequency Sub-System (HRFSS) when it is lost, as existing methods are processor-intensive and generate excessive network traffic, and require knowledge of specific subscriber units or talk groups, which is not feasible when the database is lost.
Innovation Solution
A method where the HRFSS sends a single system-wide triggering message to one or more Serving Radio Frequency Sub-Systems (SRFSS) to initiate registration information recovery, allowing the retrieval of registration information for all subscriber units or talk groups, which can then be used to restore the registration database.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing methods are used to recover registration information, then registration information can be recovered, but processor load and network traffic become excessive
Solution Approach 1:
The patent extracts only the necessary registration information from the SRFSS database and transfers it to the HRFSS, rather than transferring all database contents or performing exhaustive queries. This selective extraction reduces both processor load and network traffic while ensuring complete recovery of needed registration data.
2Reliability
If existing methods are used to recover registration information, then registration information can be recovered, but knowledge of specific subscriber units or talk groups is required
Solution Approach 1:
The patent creates a universal recovery mechanism that can retrieve registration information for any subscriber unit or talk group without requiring prior knowledge of specific identifiers. The HRFSS sends a generic request to the SRFSS, which universally returns all registration information, making the system adaptable to any failure scenario without requiring specific operational knowledge.
3Loss of energy
If a single system-wide triggering message is sent, then processor load and network traffic are reduced, but the complexity of the recovery mechanism increases
Solution Approach 1:
The patent merges multiple individual recovery operations into a single system-wide triggering message. Instead of sending separate queries for each subscriber unit or talk group, the system combines all recovery needs into one message that the SRFSS processes comprehensively, reducing overall system complexity despite the sophisticated nature of the single message.
Data Source
AI summary
Methods, systems and apparatus are provided for recovering registration information at a home network when the home network determines that it has experienced a loss of the registration information. The home network communicates a triggering message to at least one visited network to initiate registration information recovery, and the visited network responds to the triggering message by communicating registration information for objects that are located at the visited network and that are associated with the home network. These objects may include, for example, subscriber units and/or talk groups that are associated with the home network and have roamed to the visited network.