Location-Aware Messaging Domain Selection for NAS and IMS
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Solution Overview
Problem
Existing network messaging systems are unaware of specific location information, leading to inefficient delivery methods and increased signaling overhead, particularly in roaming scenarios and satellite-supported networks.
Innovation Solution
A messaging application server queries a Home Subscriber Server for location information using enhanced Diameter Sh interface queries, enabling it to determine whether to deliver messages via Non-Access Stratum (NAS) or Internet Protocol Multimedia Subsystem (IMS) based on factors like PLMN ID, cell ID, and radio access technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If location information is queried and messaging domain selection is implemented, then message delivery success rates improve and radio resource utilization is optimized, but device complexity and signaling overhead increase
Solution Approach 1:
The system changes the parameter of messaging domain selection by introducing location information (PLMN ID, cell ID, RAT type) as decision criteria. The messaging application server queries the HSS for location information and selects between NAS and IMS domains based on these parameters, thereby improving message delivery success rates and optimizing radio resource utilization.
Solution Approach 2:
The HSS acts as an intermediary between the messaging application server and the core network. It provides location information to the messaging application server, which then makes informed decisions about message delivery domain selection, balancing reliability improvement with system complexity management.
2Measurement precision
If location information queries are performed for every message, then messaging domain selection accuracy improves, but signaling overhead increases
Solution Approach 1:
The system performs preliminary action by querying the HSS for location information before message delivery decision-making. This ensures that the messaging application server has accurate location data (PLMN ID, cell ID, RAT type) to make precise domain selection decisions, improving measurement precision while managing signaling overhead through targeted queries rather than continuous queries.
Data Source
AI summary
The technology disclosed herein relates to network messaging domain selection for the improvement of radio resources, bandwidth, and user device experiences. In embodiments, one or more particular queries can be transmitted (e.g., to a Home Subscriber Server) associated with a user device receiving or transmitting a message. For example, one of these particular queries (e.g., a Diameter Sh interface query) can include a request for particular location information (e.g., a cell identity associated with a base station, a radio access technology type, a public land mobile network identity) associated with the user device receiving or transmitting the message (e.g., a short message service). The technology discussed herein can determine whether the message is to be delivered via non-access stratum or internet protocol multimedia subsystem.