Discovery method and device of network function service

Abstract

The invention provides a discovery method and device of network function service. The discovery method of network function service includes the steps: after establishing a communication connection between NRF (NF Repository Function) and NF (Network Function), a digital certificate of the NF is obtained through a TLS (Transport Layer Security) or DTLS (Data Transport Layer Security) two-way authentication process, wherein the digital certificate of the NF carries the service name of the NF, a service name list that the NF depends on, and a service name list that the NF depends on; and the NRFreceives a query request for querying the address of target service, sent by the NF, wherein the query request carries the complete domain name of the target service, and the NRF performs verificationaccording to the service name of the target service and the digital certificate of the NF, and sends the address of the target service to the NF when the verification succeeds, thus realizing the discovery between NF services, and decoupling between the NF and a network slide, and decoupling between the NF and the service security mechanism.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a method and device for discovering network function services. Background technique [0002] With the development of the fifth-generation mobile communication technology (5th-generation, 5G for short), in the evolution process of the core network network architecture of the 5G network, a network function (Network Function, NF) based on cloud and virtualization technology is proposed. )-centered service-oriented network architecture, in which the network function storage function (NF Repository Function, NRF) is a network function that provides service registration and discovery functions for NF, and NF can register one or more The address of a service. The address of a registered service has many forms, which can be an IP address or a URL address. The name of a service is defined as <service name>.<NF name>. <plmn>, for example: session-m...

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Problems solved by technology

Moreover, network slices are dynamically deployed according to customers' ordering requirements, that is, the life cycle of NFs in a certain network slice is uncertain, so NFs in different network slices are also isolated in terms of business, such as figure 1 NF1 in network slice A can only interact with NF2 in network slice A, but cannot access the same type of NF2 outside network slice A

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