name: DDDS
full_form: Downlink Data Delivery Status
context: Regarding to the cost of the F1/Xn-U in case of Solution 1, Solution 2, Solution 3 and Solution 5 for scenario 1 from a message size perspective, the extra cost of the DDDS are listed as follows. - Solution 1: For DDDS report, the cost is (1bit + 3 octets + Number of NR PDCP successfully delivered out of order * 3 octets), where the Number of NR PDCP successfully delivered out of order is (2SN length â 2) at most. - Solution 2: For DDDS report, the cost is (1bit + 3 octets + Number of reported missing NR PDCP * 3 octets), where the Number of missing NR PDCP is (2SN length â 2) at most. - Solution 3: For DDDS report, the cost is (1bit + 3 octets + Number of successfully delivered PDCP SN range * 6 octets), where the Number of successfully delivered PDCP SN range is (2SN length-1 â 1) at most. - Solution 5: For DDDS report, the cost is (1bit + 3 octets + Number of successfully delivered NR PDCP PDU SN blocks * 4 octets), where the Number of successfully delivered NR PDCP PDU SN blocks is
description: Downlink Data Delivery Status (DDDS) refers to a report or message that provides information about the status of downlink data delivery, including the number of packets successfully delivered out of order, missing packets, or successfully delivered PDCP SN ranges. This message is used for overhead evaluation and cost calculation in different solutions for scenario 1.
explanation: The text explicitly states that DDDS is a 'report' and 'message',  clearly classifying it as a type of communication exchanged between entities.
section_title: 5.3.1Overhead of message size evaluation
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biotag_Description: B-Message,I-Message,I-Message,I-Message,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,O,O,O,O,O,O,B-Protocol,B-Message,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O