Method for selecting service node according to load status

Abstract

A method for selecting a servicing node according to load status, dividing the load of each node in node resource pool equably into more than one load levels, the current load status for each node corresponds to one load level, LCDN obtains load level for each node in node resource pool, and determines the selecting probability corresponding to each node according to the load level for each node, then selects a servicing node for the user terminal according to the determined selecting probability. Thus LCDN determines higher selecting probability for the node that has lower load in node resource pool, which enables the load for each node in the node resource pool tends toward balanced. In addition, the present invention uses load levels as the criterion weighing the node's load, which makes the weighing to node's load more easily and more effectively. The present invention also describes in detail the process for transferring load information, which makes LCDN can obtain the current load status for each node in time, and makes the transferring for load information more reasonably and more effectively.

Description

technical field [0001] The invention relates to load balancing technology, in particular to a method for selecting service nodes according to load conditions. Background technique [0002] In the field of communications, when there are multiple nodes of the same type that can provide services for user terminals, it is necessary to select one of them as the service node for the user terminal, such as figure 1 As shown, Node B 1 , Node B 2 ...Node B n They are nodes of the same type, that is, nodes capable of realizing the same function, and n node Bs form a node resource pool, and user terminals establish service connections with node Bs to obtain corresponding services. The network side may further include node A, so that the user terminal can establish a service connection with node B through node A to obtain corresponding services. Any node B in the node resource pool can provide a service for a certain user terminal, but only one node B can provide corresponding servi...

AI Technical Summary

Problems solved by technology

In this way, when LCDN selects service nodes for user terminals in the node resource pool, it simply selects the node with the lowest current load. However, if a large number of user terminals access the network in a short period of time, only the node with the lowest current load As the service node of the user terminal, the load of the corresponding node increases sharply, or even overloaded; and simply selecting the node with the lowest load cannot make the load of each node in the node resource pool tend to balance.

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