Question: What type of information is typically conveyed by a PDCP Control PDU in an Evolved Universal Terrestrial Radio Access (E-UTRA) network, aside from data itself?
Option 1: UE: User Equipment location updates and cell handover instructions.
Option 2: Header compression control info, PDCP status reports, LWA (LWIP - Light Weight IP) status/end-marker packets, and data compression control info.
Option 3: Voice call setup signals and SMS message routing details.
Option 4: Network congestion alerts and QoS (Quality of Service) policy updates.
Explanation: In E-UTRA networks, PDCP Control PDUs are utilized for signaling purposes that enhance the efficiency and reliability of data transmission. This includes managing header compression, reporting on PDCP status, conveying Lightweight IP operational statuses or termination markers, and exchanging data compression control information. These functions maintain seamless and optimized data services over the wireless link.