PDCP Uplink Compression Recovery After Decompression Failure
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Solution Overview
Problem
In next-generation mobile communication systems, checksum failures during uplink data compression and decompression lead to unnecessary data transmission and resource waste, as existing methods fail to efficiently manage data transmission when decompression errors occur.
Innovation Solution
A method and apparatus for a PDCP layer device that includes initializing a UDC buffer upon receiving an indicator of a checksum failure, discarding preprocessed data, and reapplying compression to new data, thereby preventing unnecessary data transmission and improving resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data compression is applied to uplink transmission to improve resource utilization, then transmission efficiency is improved, but data decompression failures occur leading to unnecessary data transmission and resource waste
Solution Approach 1:
The invention implements a feedback mechanism where the receiving terminal detects decompression failures and sends notifications to the transmitting terminal. Upon receiving such notifications, the transmitting terminal discards preprocessed data that would otherwise be transmitted unnecessarily. This feedback loop prevents resource waste by stopping transmission before failed data is sent, while maintaining the benefits of compression for successful data.
Solution Approach 2:
The transmitting terminal performs preliminary data preprocessing and compression before transmission. When a decompression failure is detected, the terminal has already prepared subsequent data in advance but can now discard this preprocessed data before it would be transmitted. This preliminary action combined with the ability to discard prevents wasting resources on data that cannot be successfully decompressed.
2Quantity of substance
If successive data compression based on previous data is used to reduce uplink data size, then data transmission efficiency is improved, but decompression failures propagate to all subsequent data
Solution Approach 1:
The invention extracts and removes the problematic element (failed decompression data) from the data stream. When a decompression failure occurs, the receiving terminal identifies the specific data packet causing the failure and notifies the transmitting terminal. The transmitting terminal then extracts and discards this problematic data and all subsequent preprocessed data, preventing the propagation of decompression failures while maintaining successful data transmission.
3Area of stationary object
If uplink data compression is applied to overcome transmission bottlenecks, then coverage and capacity are improved, but checksum failures occur during decompression
Solution Approach 1:
The invention converts the harmful effect of checksum failures into a beneficial outcome. Instead of allowing checksum failures to propagate and waste resources, the receiving terminal detects these failures and sends notifications to the transmitting terminal. The transmitting terminal then uses this information to discard preprocessed data that would otherwise be transmitted and cause further failures. The harmful checksum failure becomes the trigger for a corrective action that improves overall system reliability and resource utilization.
Data Source
AI summary
Disclosed are a communication technique which merges, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail, security- and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology. Disclosed are a method and apparatus for driving a PDCP layer apparatus during data decompression failure in a next-generation mobile communication system.