of NFs shared by different NSIs/NSSIs. 6 Enabling Technologies NSI-1 NSI-2 RRM Policy: Split between NSSI-1, NSSI-2 Cell-1 RAN NSSI-2 RRM Policy: Split between NSSI-1, NSSI-2 RAN NSSI-1 Cell-2 RRM Policy: Split between NSSI-1, NSSI-3 Cell-3 RAN NSSI-3 RRM Policy: No split Cell-4 NSI-3 Figure 6.5.6 Slicing support in RAN: radio resources management policy. 6.5.8.2 Support of Slicing Management in RAN Provisioning Service Figure 6.5.6 shows one example of slicing support in the RAN NF provisioning service, which is referred to as "RRM policy settings." 3GPP TS 28.541 defines a set of parameterized policies encoded in the attributes of the object NRCellCU, which belongs to the gNB-CU. The rRMPolicyType attribute designates the selection of the policy to be applied. For example, the policy with rRMPolicyType = 0 specifies a list of the S-NSSAI codes identifying certain NSIs, and the list rRMPolicyRatio contains the values interpreted as a target percentage of PRBs to be allocated to the corre- sponding NSIs. The target values are defined as average over an implementation-specific time interval. The sum of the configured values is not necessarily equal to 100. Table 6.5.5 provides an example of RRM policy configuration. Cell 1, Cell 2, and Cell 3 provide support for two NSIs (two RAN NSSIs) each, while Cell 4 is dedicated to a single NSI (NSSI-3). In cells 1-4, the RRM policy settings can be configured to set the target percentage of PRB use for every particular NSSI. Note that in Cell 4, not all of the bandwidth is allocated to the NSSI-3: the remaining part of the capacity will be used for the services not associated with any NSI. 6.5 Operations, Administration, and Management Table 6.5.5 Example RRM policy configuration. Cells Target percentage NSSI-1 NSSI-2 NSSI-3 Cell-1 Cell-2 Cell-3 Cell-4 6.5.8.3 Configuration and LCM of NSSI and NSI The concept of management services (3GPP TS 28.533, clause 4) was applied to slicing management as well. In particular, the provisioning services described above enable con- figura