Methodology for Traffic Control Based on Cross-Carriers Short Message (SMS) Application

Method of traffic control for cross-carrier SMS application, the major feature is to set different RAM realization strategies and achieve traffic control over the operational process of SMS by setting different limits for different carriers including the overall limit, total traffic limit and individual user's traffic limit

• 1) Different carriers adopt different overall limits:
• traffic limit is set for different carriers in RAM, based on differences of the receiving number's properties. These properties include current time, last calling time, the number of text messages that have been sent, and the maximum allowable number of text messages. Software will calculate the traffic time for each message. If it reaches the time limit, the system will automatically transfer the message to “over-time processing module”.
• 2) Overall Traffic Limit:
• It is achieved by setting a simple overall traffic limit. When the time limit is reached for sending the message, all sending modules will temporarily suspend the sending procedure for a certain time (e.g. 1 second) until the defined time.
• 3) The strategy of using RAM to restrict individual user's network traffic:
• RAM can be achieved through HASH MAP. Setting a HASH MAP for each carrier could create a HASH MAP record for each carrier when a new “sending number” appears. For each outgoing message, the system records the statistics for sending this message from the sending number to a service carrier. Again, if the time limit is reached for sending the message, it will be transferred to “time-out processing module”. The advantage of using the HASH MAP is that even when traffic volume is high, it does not incur query cost and ensures the running speed of the software. The disadvantage of using the HASH MAP is the large usage of RAM. Through calculation, the RAM usage reaches about 1 G after running a certain time. This problem has been solved after adding automatic calculation and clean-up function;
• 4) The implementation of RAM strategy:
• using RAM in accordance with different traffic control requirements. The whole process uses a number of array (LIST) queue. The “normal sending queue” is used for “normal sending”, the “delay sending queue” is used for “time-out processing” and the “send failed queue” is used for “send failed processing”.
• 5) In order to achieve “time-out processing”, the system also add the “time-out sub thread”. Through this thread, the message will be transferred to the “time-out processing module” automatically in the case of timeout.