name: NRF
full_form: Network Repository Function
context: 2a, and forwards the access token request to the target NRF. There can also be several hops of NRFs between the NRF that receives the access token request from the NF Service Consumer and the target NRF where the NF Service Producer is registered. One possible hierarchical NRF deployment is the local NRF deployment. An NF Service Producerâs local NRF is the NRF where the NF Service Producer registered its NF profile. In the local NRF deployment, the NF Service Producer is configured with the public key which corresponds to the private key that its local NRF uses for signing the access token. Thus, when the local NRF receives an access token request from an NF Service Consumer, the local NRF checks if the NF Service Consumer is authorized to receive the requested service and, if yes, issues and signs the access token. In the case when the access token request from the NF Service Consumer was forwarded by another NRF, the local NRF of the NF Service Producer needs to trust the NRF which
description: The Network Repository Function (NRF) manages and stores information about network services and their producers. It handles access token requests, verifies authorization, and issues signed access tokens to authorized NF Service Consumers.
explanation: The NRF is classified as a Network Function because it performs essential tasks within the network, such as managing service information, controlling access, and interacting with other network functions.
section_title: 13.4.1.1.3	Access token requests in deployments with several NRFs
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