MTC-IWF Aggregating UE Messages for Multiple SCSs
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Solution Overview
Problem
In Machine-Type Communication (MTC), a UE subscribed to multiple Service Capability Servers (SCSs) faces increased traffic and power consumption due to the need to send messages one by one, and perform confidentiality and integrity protection for each message, which is time-consuming.
Innovation Solution
An MTC device includes means to send multiple pieces of data in one message to multiple SCSs through an MTC-IWF, which serves as an entry point in the core network, allowing for efficient distribution and reception of data, including indicators for determining when to forward messages based on tolerance timers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE sends messages one by one to multiple SCSs, then each message can be transmitted individually, but the traffic from the UE to the MTC-IWF increases and power consumption increases
Solution Approach 1:
The patent combines multiple individual message transmissions into a single batch transmission. The UE includes multiple pieces of data intended for different SCSs in one message and transmits it once to the MTC-IWF, which then distributes it to the respective SCSs. This merging approach maintains transmission reliability while significantly reducing the number of transmission operations and associated power consumption.
2Reliability
If the UE performs confidentiality and integrity protection for each message, then security is maintained, but the process becomes power and time consuming
Solution Approach 1:
The patent merges multiple security operations into a single operation. Instead of performing confidentiality and integrity protection separately for each message to multiple SCSs, the UE performs these security operations once on the combined message containing data for all SCSs. The MTC-IWF then distributes the secured message to the respective SCSs, maintaining security while reducing the time and power required for security operations.
3Adaptability or versatility
If the UE sends messages one by one to multiple SCSs, then each SCS can receive data individually, but the traffic to the MTC-IWF increases
Solution Approach 1:
The patent combines multiple data transmissions into a single aggregated transmission. The UE includes multiple pieces of data for different SCSs in one message, reducing the total number of messages sent to the MTC-IWF. This maintains the adaptability of communicating with multiple SCSs while significantly reducing the traffic volume and network resources consumed.
Data Source
AI summary
In order for efficiently managing communications between a UE (10) and multiple SCSs (20_1-20_n), the UE (10) includes, in one message, multiple pieces of data to be transmitted to the SCSs (20_1-20_n), and sends the message to an MTC-IWF (30). The MTC-IWF (30) receives the message from the UE (10), and distributes the date to the SCSs (20_1-20_n). Each of the SCSs sends (20_1-20_n), to the MTC-IWF (30), data to be transmitted to the UE (10) and an indicator that indicates for the SCSs (20_1-20n) the time tolerance until the data is transmitted to the UE (10). The MTC-IWF (30) receives the data and the indicators from the SCSs (20_1-20_n), and determines when to forward the data to the UE (10) based on the indicators.