SMSC Dynamic SMS Routing via HSS Registration Status
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Solution Overview
Problem
Traditional SMS message transmission over circuit services networks burdens network resources, and the transition to packet data networks introduces unnecessary overhead due to lack of recipient device registration status knowledge by the SMSC.
Innovation Solution
The system allows SMS messages to be transmitted over either packet data or circuit services networks, with the SMSC knowing the recipient device's network registration status, enabling dynamic selection between the two networks for delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SMS messages are transmitted over circuit services networks, then reliable message delivery is achieved, but network resources such as air interface capacity and MSC capacity are unnecessarily burdened and decreased
Solution Approach 1:
The patent introduces an SMS delivery status notification mechanism where the SMSC acts as an intermediary that tracks message delivery status. The HSS serves as a mediator that provides registration status information to the SMSC, enabling intelligent routing decisions without burdening the circuit services network with unnecessary message traffic when packet data network delivery is available.
Solution Approach 2:
The patent implements dynamic network selection for SMS delivery. The system dynamically chooses between circuit services network and packet data network based on real-time delivery status and network conditions. The SMSC dynamically adjusts the delivery path by querying HSS for registration status and selecting the most appropriate network interface, thereby optimizing network resource utilization while maintaining reliable delivery.
2Loss of energy
If SMS messages are transmitted over packet data networks, then network resource usage is optimized, but the SMSC lacks knowledge of recipient device registration status creating unnecessary overhead
Solution Approach 1:
The patent makes the HSS a universal information source that serves multiple functions. The HSS not only manages subscriber registration status for packet data network access but also provides this registration status information to the SMSC for SMS delivery routing decisions. This multi-functionality eliminates the need for separate querying mechanisms and reduces system overhead.
Solution Approach 2:
The patent establishes a feedback mechanism where the HSS provides registration status information back to the SMSC. This feedback loop enables the SMSC to make informed routing decisions about SMS message delivery without creating unnecessary overhead. The HSS feeds registration status information to the SMSC, which then uses this feedback to determine the appropriate delivery path.
3Loss of information
If the SMSC queries the HSS to determine recipient device registration status, then delivery status knowledge is obtained, but unnecessary overhead is created for the system
Solution Approach 1:
The patent implements preliminary action by having the HSS maintain and update registration status information in advance of SMS delivery attempts. The HSS continuously tracks device registration status with the packet data network and makes this information available to the SMSC before message delivery is attempted. This preliminary preparation eliminates the need for time-consuming queries at message delivery time.
Data Source
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AI summary
A method and device for transmitting at least one short messaging service message to at least one wireless device are disclosed. The method comprises receiving at least one short message service message request associated with a short message service message. The short message service message is destined for reception by a wireless device (106). Prior to receiving the request, a short message service center (114) determines if a wireless device (106) is registered with a registrar (210) associated with a session initiation protocol network for communicating over a packet data network (102). The short message service message is transmitted to the wireless device (106) through the session initiation protocol network communicating over the packet data network (102) in response to the request and with the determination that the wireless device (106) is registered with the registrar (210).