Protocol Data Unit Segmentation for Radio Resource Efficiency
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Solution Overview
Problem
The increasing number of user equipment (UEs) requiring service from a base station (BS) and the growing amount of data and control information to be transmitted pose challenges in efficiently utilizing limited radio resources, particularly in reducing latency and supporting new radio access technologies.
Innovation Solution
Attaching sequence numbers to service data unit (SDU) elements to generate protocol data units (PDUs) that include indicators for each SDU element, allowing for efficient transmission and reception of data, including segmentation and framing information to manage data units effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of user equipments (UEs) and data amount increase to meet growing communication demands, then service coverage and data capacity improve, but radio resource efficiency deteriorates due to limited available resources
Solution Approach 1:
The patent segments data units into smaller transmission blocks with individual sequence numbers, allowing parallel processing and transmission of multiple segments simultaneously. This segmentation enables more efficient utilization of limited radio resources by reducing processing bottlenecks and enabling concurrent transmissions.
Solution Approach 2:
The patent applies preliminary actions by pre-attaching sequence numbers to data units before transmission and pre-configuring transmission parameters. This preparation reduces processing time during actual transmission, thereby improving radio resource efficiency when serving multiple UEs.
2Device complexity
If traditional data transmission methods are used to maintain system simplicity, then device complexity remains low, but latency increases due to inefficient data unit management
Solution Approach 1:
By segmenting data units into manageable blocks with individual sequence numbers, the system processes smaller units in parallel, reducing overall processing time and latency while maintaining reasonable device complexity through standardized segmentation procedures.
Solution Approach 2:
The patent changes parameters by introducing sequence numbers and segmentation indicators as new transmission parameters. These parameter changes enable more efficient data unit management and reduced latency without significantly increasing device complexity, as the changes are implemented at the protocol layer.
3Productivity
If sequence numbers and indicators are attached to each SDU element to improve data unit management, then transmission efficiency improves, but processing complexity increases
Solution Approach 1:
The segmentation approach attaches sequence numbers to individual data segments rather than processing entire data units at once. This granular approach improves transmission efficiency by enabling parallel processing while keeping processing complexity manageable through standardized segment handling procedures.
Solution Approach 2:
The sequence number and indicator structure serves multiple functions simultaneously: identification, ordering, segmentation tracking, and error handling. This multi-functionality improves transmission efficiency without proportionally increasing processing complexity, as a single structural element accomplishes multiple tasks.
Data Source
AI summary
In the present invention, the transmitting device attaches a sequence number (SN) for each of service data unit (SDU) elements to generate a protocol data unit (PDU) containing the SDU elements. Each of the SDU elements is a SDU or SDU segment. The PDU includes the SDU elements and respective SNs for the SDU elements. The PDU includes an indicator for each of the SDU elements, and the indicator indicating whether a corresponding SDU element is a SDU or SDU segment.