name: POP
full_form: st Office Protocol
context: In this use case, radio access network (i.e. one of multiple shared NG-RAN network elements) are shared between two POPs (POP A identified by PLMN A, POP B identified by PLMN B). As agreed by POP A and POP B in their RAN sharing agreement: - Radio resources (e.g. PRB, RRC connection, DRB) of the shared radio access network are partitioned for POP A and POP B, which means the radio resource partitioning policies (e.g. RRMPolicyRatio) of the radio access network is agreed for POP A and POP B. The detailed RRMPolicy definition for NG-RAN see the clause 4.3.36 of TS 28.541 [8]. Following is one example of RRMPolicy for corresponding POP A and POP B. In this example, - POP A has 20% dedicated radio resources, 30% prioritized resources and 50% shared resources. In this case, there are 20% radio resources are dedicated for the POP A, 30% radio resources are guaranteed for POPA when it needs to use them, and 50% resources are shared with POP B. - POP B has 30% prioritized resources and 20%
description: A Point of Presence (POP) is a network function that represents an entry point into a network, serving as an interface between the network and external entities. In the context of radio access network sharing, POPs are used to partition radio resources among different network operators or slices.
explanation: The provided text describes POPs as entities that manage resource partitioning within shared radio access networks. This function of managing and controlling network resources aligns with the definition of a Network Function.
section_title: 5.4.6Radio resources partitioning between two POPs for the shared NG-RAN
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