Question: In an LTE DC (Dual Connectivity) scenario with a split bearer option, how does the Secondary Node B (SeNB) interpret the Guaranteed Bit Rate (GBR) QoS Information for a GBR E-RAB?
Option 1: As a cell-level parameter, overriding bitrates signaled by the Master Node B (MeNB)
Option 2: As an E-RAB level parameter, considering both MeNB and MME signaled bitrates equally
Option 3: As an E-RAB level parameter, but only considering bitrates signaled by the MeNB
Option 4: Ignoring GBR QoS Information for split bearer options, relying on default settings
Explanation: In LTE DC with a split bearer option, the SeNB treats the GBR QoS Information as an E-RAB level parameter. This means it considers this information at the level of the individual bearer, even though, for split bearers, the bitrates signaled by the MeNB and MME might not be identical. This interpretation ensures consistent management of QoS across the network, despite the potential discrepancy in bitrate signaling between the MeNB and MME.