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 present invention relates to core network technology, in particular to a method for selecting and serving core network nodes 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 relationship . 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 circuit domain is a Mobile Switching Center (MSC, Mobile Switching Centre), and the CN node in the packet domain is a Serving GPRS Support Node (SGSN).

[0003] The concept of pool area is proposed in the 3GPP standard. The pool area refers to the area covered by multiple RAN nodes. When a user equipment (UE, User Equipment) roams in the po...

Examples

Embodiment Construction

[0035] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0036] In the present invention, when the UE requests to establish a NAS signaling connection to the CN node, that is, after the RNC receives the direct message sent by the UE, the RNC selects the serving CN node for the UE according to the load status of each CN node in the CN node pool. In order to prevent the UE from changing the serving CN node in a CN node pool too frequently, for example, to prevent the UE from performing business in a CN node pool every time, the RNC selects the serving CN node for the UE according to the load status of each CN node in the CN node pool. Further, after the RNC receives the direct message sent by the UE, if the RNC can obtain effective routing parameters, such as NRI, the CN node corresponding to the routing parameter is sel...

Technical field

[0001] The present invention relates to core network technology, in particular to a method for selecting and serving core network nodes 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 relationship . 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 circuit domain is a Mobile Switching Center (MSC, Mobile Switching Centre), and the CN node in the packet domain is a Serving GPRS Support Node (SGSN).

[0003] The concept of pool area is proposed in the 3GPP standard. The pool area refers to the area covered by multiple RAN nodes. When a user equipment (UE, User Equipment) roams in the po...

Examples

Embodiment Construction

[0035] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0036] In the present invention, when the UE requests to establish a NAS signaling connection to the CN node, that is, after the RNC receives the direct message sent by the UE, the RNC selects the serving CN node for the UE according to the load status of each CN node in the CN node pool. In order to prevent the UE from changing the serving CN node in a CN node pool too frequently, for example, to prevent the UE from performing business in a CN node pool every time, the RNC selects the serving CN node for the UE according to the load status of each CN node in the CN node pool. Further, after the RNC receives the direct message sent by the UE, if the RNC can obtain effective routing parameters, such as NRI, the CN node corresponding to the routing parameter is sel...

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