PDCP Layer Data Block Segmentation for Wireless Transmission
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Solution Overview
Problem
In wireless communication systems, existing methods struggle to efficiently process data blocks by determining whether to apply header compression, ciphering, and integrity checks based on the type of data, leading to suboptimal resource utilization and data transfer efficiency.
Innovation Solution
A method is introduced that processes data blocks by dividing them into types based on whether they are user data or control data, and applying header compression, ciphering, and integrity checks accordingly, using entities like sequence number allocation, header compression, integrity check, and ciphering entities within the PDCP layer to manage and transmit data effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If header compression, ciphering, and integrity checks are applied to all data blocks uniformly, then data security and reliability are improved, but data processing overhead and resource consumption increase
Solution Approach 1:
The patent segments data blocks into different types (user data and control data) and applies different processing rules to each type. User data receives header compression, ciphering, and integrity checks, while control data is transmitted without these processing steps, thereby reducing overall processing overhead while maintaining security for sensitive user data.
Solution Approach 2:
The patent applies different quality levels of processing to different parts of the data stream based on their type. User data receives full security processing (high quality), while control data receives minimal processing (low quality), optimizing the balance between security and efficiency for each data type.
2Productivity
If header compression is applied to reduce data size, then resource utilization is improved, but processing time and complexity increase
Solution Approach 1:
The patent segments data blocks to identify user data that benefits from compression versus control data that does not require compression. By applying header compression only to user data, the system achieves resource utilization improvements without the processing overhead of compressing control data.
3Reliability
If data blocks are processed with multiple security functions (ciphering and integrity checks), then data reliability is improved, but transmission efficiency decreases
Solution Approach 1:
The patent segments data into user data and control data, applying ciphering and integrity checks only to user data. This selective approach maintains data reliability for sensitive information while improving transmission efficiency by avoiding redundant security processing on control data.
Solution Approach 2:
The patent applies different levels of security processing to different data types. User data receives full security processing (ciphering and integrity checks) to ensure reliability, while control data receives minimal or no security processing, thereby optimizing transmission efficiency without compromising the reliability of critical user data.
Data Source
AI summary
A method of generating a data block to be transmitted from a protocol layer to a receiving side in a wireless communication system, the protocol layer having a header compression function, comprises generating at least one of a control packet which includes control information and a compressed packet generated by header compression for an upper layer data block, and generating a first lower layer data block which includes type indication information and the control packet, if the control packet is generated, the type indication information indicating a type of control information included in the generated control packet.