Base Station PDCP Duplication Traffic Control
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Solution Overview
Problem
Current 5G communication systems face challenges in achieving ultrahigh reliability and low latency due to limited radio resources, leading to increased network traffic and congestion, particularly in URLLC scenarios where high reliability and low delay are simultaneously required.
Innovation Solution
A base station configuration that includes a first reception unit for receiving communication state information from another base station, a first transmission unit for duplicating data and transmitting it to a terminal device, and a second transmission unit for transmitting data using radio communication, with a notification mechanism to confirm transmission completion only when necessary, thereby reducing unnecessary traffic and processing loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission completion notifications are transmitted every time a packet is transmitted in PDCP Duplication, then reliability of packet reception is improved, but network traffic increases causing congestion
Solution Approach 1:
The patent applies partial action by transmitting transmission completion notifications selectively rather than for every packet. The base station determines whether to transmit the notification based on whether the other base station has already transmitted the same packet, thereby providing sufficient reliability information without excessive notification traffic.
Solution Approach 2:
The patent implements a feedback mechanism where base stations exchange transmission completion notifications to inform each other about packet transmission status. This feedback allows base stations to coordinate their transmissions and avoid redundant notifications, balancing reliability improvement with traffic control.
2Reliability
If transmission completion notifications are transmitted from both base stations simultaneously, then reliability is improved through redundancy, but network traffic and processing load increase significantly
Solution Approach 1:
The patent applies preliminary anti-action by having base stations check whether the other base station has already transmitted a packet before sending transmission completion notifications. This preventive measure avoids the harmful effect of redundant notifications and unnecessary processing that would occur if both base stations transmitted simultaneously.
Solution Approach 2:
The patent uses partial action by transmitting transmission completion notifications only when necessary - specifically, when one base station has not yet transmitted the packet while the other has. This eliminates excessive duplicate notifications while maintaining the reliability benefits of coordinated transmission.
3Reliability
If PDCP Duplication is implemented to meet URLLC requirements, then reliability and latency are improved, but network congestion occurs due to increased traffic
Solution Approach 1:
The patent applies partial action by selectively transmitting packets and transmission completion notifications in PDCP Duplication. Each base station determines whether to transmit based on the other base station's transmission status, thereby providing the redundancy needed for URLLC while avoiding excessive duplicate transmissions that would cause network congestion.
Solution Approach 2:
The patent implements feedback through transmission completion notifications that allow base stations to coordinate their PDCP Duplication transmissions. This feedback mechanism enables reliable URLLC communication by ensuring packet delivery while controlling traffic volume through intelligent notification transmission based on actual transmission status.
Data Source
AI summary
A base station includes, in an aspect, a first reception unit, a first transmission unit, and a second transmission unit. The first reception unit receives information related to a communication processing state of another base station from the other base station. The first transmission unit transmits duplication of data to be transmitted to a terminal device to the other base station. The second transmission unit transmits the data to the terminal device by using radio communication. Furthermore, the first transmission unit transmits, after the transmission of the data performed by the second transmission unit has been completed, in accordance with the information related to the communication processing state of the other base station, a transmission completion notification that indicates that the transmission of the data has been completed to the other base station.