Method for selecting service core network node

Abstract

The invention discloses a selecting method of serving core network node, which is characterized by the following: RNC receives direct-transmitting information from UE, which selects serving CN node according to each load condition of CN node in the CN node pool; if RNC can obtain effective route parameter, it selects corresponding route parameter CN node as the serving CN node of UE; if not, RNC selects serving CN node for UE according to load condition of CN node; RNC considers load difference in the CN node, which makes each CN node relative to load of CN node. The invention makes lower CN node bear less UE and business, which reduces over-loading condition probability for CN node.

Description

technical field [0001] The invention relates to core network technology, in particular to a method for selecting a serving core network node in a core network node pool. Background technique [0002] According to the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) standard, a radio access network (RAN, Radio Access Network) node can be connected to multiple core network (CN, Core Network) nodes to form a many-to-many correspondence . The RAN node may be a radio network controller (RNC, Radio Network Controller) or a base station controller (BSC, Basic Station Controller). The CN node in the CS domain is a Mobile Switching Center (MSC, Mobile Switching Centre), and the CN node in the PS domain is a Serving GPRS Support Node (SGSN, Serving GPRS Support Node). [0003] The concept of a pool area is proposed in the 3GPP standard. A pool area refers to an area covered by multiple RAN nodes. When a user equipment (UE, User Equipment) roams in the po...

AI Technical Summary

Problems solved by technology

[0013] According to the above description, the UE uses IMSI or IMEI as the identifier, and the RNC selects the serving CN node for the UE according to the V (Value) value calculated by (IMSI Div10) Mod 1000 or (IMEI Div 10) Mod 1000, so that each CN node The probability of being selected is the same, and the load difference of each CN node in the CN node pool is not considered at all. When the capacity and capability of each CN node in the CN node pool are greatly different, the probability of overloading the CN no...

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