Multimode Controller Protocol Enhancement for 2G 3G Message Routing
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Solution Overview
Problem
Multimode controllers face challenges in distinguishing between 2G and 3G services due to the inability of the SCCP protocol module to correctly identify message types, leading to increased time delays and reduced reliability in processing incoming messages.
Innovation Solution
A protocol enhancement module is introduced between the SCCP and RNSAP protocol modules to parse incoming messages, determine the service standard type, and forward them to the corresponding RNSAP protocol module for processing, utilizing transport layer information and standard attribute tables to establish accurate service relationships.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the SCCP protocol module uses only SSN to identify messages, then the protocol structure remains simple, but the multimode controller cannot distinguish between 2G and 3G services, leading to increased processing time delay and reduced reliability
Solution Approach 1:
The identification process is segmented into multiple stages: first identifying the interface type (lur or lur-g) through transport layer information, then determining the service standard type based on the interface type and SSN. This segmentation allows accurate message routing without requiring a single complex identification mechanism.
Solution Approach 2:
The system performs preliminary identification of the interface type using transport layer information before processing the message content. This preliminary action enables the protocol module to prepare the appropriate processing path in advance, reducing overall processing time delay while maintaining accuracy.
2Ease of manufacture
If the multimode controller shares the SCCP protocol module for both 2G and 3G services, then equipment cost is reduced, but the controller loses the ability to accurately identify message types, increasing processing time delay
Solution Approach 1:
The system adds a new dimension of identification by utilizing transport layer information (interface type) in addition to the traditional SSN. This dimensional enhancement allows the shared SCCP protocol module to distinguish between 2G and 3G services without requiring separate protocol modules, thereby maintaining cost efficiency while improving processing speed.
3Device complexity
If the SCCP protocol module processes all messages uniformly, then the device complexity is minimized, but the processing accuracy for different service standards deteriorates
Solution Approach 1:
An intermediary identification mechanism is introduced that uses transport layer information as a mediator between the SCCP protocol module and the RNSAP protocol modules. This intermediary layer enables accurate service standard identification without requiring the SCCP module itself to become complex, maintaining simplicity while improving precision.
Data Source
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AI summary
The disclosure relates to a method and device for processing an incoming message of a multimode controller, and a multimode controller, wherein the method includes: a multimode controller receives the incoming message from an abutting network element, and parsing the incoming message to construct an N-primitive message; a service standard type of the incoming message is obtained according to the N-primitive message; and the N-primitive message is processed according to the service standard type. By adding a protocol enhancement module, which obtains a service standard type of a message, between an SCCP protocol module and standard RNSAP protocol modules, the disclosure assists the SCCP protocol module and the RNSAP protocol modules in correctly and quickly establishing a corresponding relationship, saves software maintenance cost, makes up shortages of current SCCP and RNSAP protocols when supporting the multimode controller, and realizes to a function of processing signalling according to standards. Furthermore, when being only configured as a single mode or presenting in the manner of multimode, the multimode controller needs not to be modified functionally, and can accurately forward a signalling to a corresponding standard of wireless network control service layer to process.