Research Of Load Balancing Of The Service Control Point In The Intelligent Network

The IN (Intelligent Network), which is being investigated as a future communication network, facilitates both rapid introduction of new services and easy modification of existing services. The SCP (Service Control Point) and the SSP (Service Switch Point) are IN components that connected by SS7 (Signaling System No.7). The SCP fields query from the SSP, parse them and perform real-time database query processing, and provides the appropriate responses.The SCP allocates data for customers among multiple modules. In the SCP, load can vary among the modules due to dispersion in the amount of traffic for each customer. It is therefore important to balance out this load variation and raise the utilization of each module in order to achieve an efficient distributed processing system. There is a method for balancing the load among modules by transferring customer data in units of records from high-load modules to low-load modules. But the method can not balance load dynamically. There are two limitations in this method:1. Processor overhead for transferring record2. Circulation for transferring recordThen, based on the above limitations, this paper proposes a dynamic Load Balancing method. Through the simulation of the change over time of the traffic of customer data, it draws a comparison in the deviation of the change over time of the traffic in a certain SDM (Service Data Module) with respect to that of the average traffic of all modules between old method and new method. The load imbalance ratio, the number of records transferred per unit time and the reduction of number of modules are evaluated. And the relationship among them is also evaluated. Therefore, the dynamic transferring of records is an effective scheme for balancing load among modules in the service control point of the IN.