name: QCI
full_form: QoS Class Identifier
context: This clause provides the description of Initial Attach for PDN connection towards an APN resulting in LBO in VPLMN. Figure 4.2.5.2.2.1: Initial Attach A UE needs to Initial Attach and have a PDN connection to the APN. During this Initial attach, the always-on IP connectivity for UE of the EPS is enabled by establishing a default EPS bearer, with the QCI value supplied by the HSS. Steps 1 to 10 are similar as steps 1 to 10 in Figure 4.2.1.2.2.1, with following adaptations: - APN is different from IMS APN, and QCI may be different from QCI 5 for the default bearer. - As result from H-PCRF behaviour (Alternative A. use of S9) or as static Rules (Alternative B): - Multiple PCC Rules and multiple RGs apply to the default bearer (PCC Rules with QCI and ARP matching the Authorized Default EPS Bearer QoS). - PCC Rules require dedicated bearers (different QCI from QCI for the default bearer) to be established. - The Gy session for the default bearer may contain multiple MSCC (i.e. RGs) for
description: QoS Class Identifier (QCI) is a parameter used in telecommunications networks to identify a set of packet forwarding treatments applied to packets belonging to a specific bearer or flow. QCI values determine the priority and handling of traffic within the network.
explanation: The text describes QCI as a value used to establish default EPS bearers and control network behavior, indicating its role as a configurable parameter in telecommunications.
section_title: 4.2.4.5.2Initial Attach
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biotag_Description: B-Parameter,I-Parameter,I-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O