Wireless Node PDCP Layer Segmentation for Large Data Processing

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Solution Overview

Problem

Current 5G communication systems face challenges in efficiently processing large data packets due to the limitations of the Packet Data Convergence Protocol (PDCP) layer, which cannot handle data sizes exceeding its maximum processing capacity, leading to issues in providing effective services, especially in next-generation mobile communication systems.

Innovation Solution

The implementation of a wireless node with a controller configured to manage multiple radio bearers through a Backhaul Adaptation Protocol (BAP) layer, allowing for the configuration of a second PDCP layer for each radio bearer, performing ciphering, deciphering, and integrity protection, and using a new security key or preset key for data transmission, thereby enhancing data processing capabilities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a single PDCP layer is used for data transmission, then the device complexity is low, but the data processing capacity is insufficient for large data packets

Engineering Contradiction:
Improvedata processing capacityVSAvoidprotocol layer complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent divides the data transmission path into multiple radio bearers (first radio bearer for control messages, second radio bearer for user data), each with its own PDCP layer. This segmentation allows independent processing of different data types, enabling the system to handle large data packets by distributing them across multiple bearers while maintaining manageable complexity through clear functional separation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces a new dimension to the protocol architecture by adding a second PDCP layer specifically for user data transmission through the second radio bearer. This dimensional expansion allows the system to process large data packets that exceed the capacity of a single PDCP layer, effectively increasing data processing capacity without overwhelming the existing control plane.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If multiple radio bearers with separate PDCP layers are configured, then the data transmission capacity increases, but the device complexity increases

Engineering Contradiction:
Improvedata transmission capacityVSAvoidbearer management complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent segments data transmission into dedicated bearers: the first radio bearer handles control messages between the wireless node and network, while the second radio bearer handles user data. Each bearer has its own PDCP layer, allowing independent optimization and management. This segmentation increases transmission capacity by enabling parallel processing of different data types while controlling complexity through clear functional boundaries.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The BAP layer serves as a universal intermediary that manages multiple radio bearers and routes data appropriately. This multi-functional layer handles both control plane and user plane traffic, providing a unified management mechanism that increases transmission capacity while abstracting the complexity of bearer management from lower layers.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If standard PDCP processing is used, then the implementation is simple, but it cannot handle data sizes exceeding maximum processing capacity

Engineering Contradiction:
Improvedata size handling capabilityVSAvoidprotocol architecture complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent adds a second PDCP layer dimension specifically for user data transmission, enabling the system to handle data sizes that exceed the capacity of a single PDCP layer. This dimensional addition provides the adaptability to process large data packets by distributing them across multiple PDCP instances while maintaining the simplicity of standard PDCP processing within each layer.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent segments large data packets across multiple radio bearers, each processed by its own PDCP layer. This segmentation allows the system to handle data sizes exceeding the maximum processing capacity of a single PDCP layer by dividing the workload across multiple independent processing instances, thereby increasing adaptability without requiring a complete redesign of the PDCP protocol itself.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS11350305B2Method and apparatus for processing data in wireless communication system
Publication Date: 2022.05.31 SAMSUNG ELECTRONICS CO LTD
  • US11350305B2 patent drawing
  • US11350305B2 patent drawing
  • US11350305B2 patent drawing

AI summary

A wireless node in a wireless communication system, the wireless node includes a transceiver and at least one controller coupled with the transceiver. The controller is configured to configure a first radio bearer connected to a first packet data convergence protocol (PDCP) layer and at least one second radio bearer connected to a radio link control (RLC) layer through a bandwidth allocation protocol (BAP) layer. The controller is also configured to configure a second PDCP layer for at least one radio bearer from among the at least one second radio bearer. The controller is further configured to process, at the second PDCP layer, at least one of a control message or data transmitted by the at least one radio bearer.