Skipping Contention Resolution in 5G Early Data Transmission
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Solution Overview
Problem
In 5G communication systems, existing methods for early data transmission (EDT) often require contention resolution, which can be unnecessary and inefficient, especially in scenarios like massive machine-type communications where data loss is not critical, leading to increased power consumption and resource utilization inefficiencies.
Innovation Solution
A method where a wireless device detects data to be transmitted and, upon receiving information that contention resolution is not required, transmits the data on a logical channel without performing contention resolution, determining successful transmission based on acknowledgement or the number of transmissions exceeding a threshold, thereby skipping the contention resolution process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contention resolution procedure is performed for early data transmission, then data transmission reliability is improved, but power consumption increases and transmission efficiency decreases
Solution Approach 1:
The patent changes the parameter of contention resolution requirement from mandatory to conditional. The network configures a parameter indicating whether contention resolution is required, and the UE behavior changes accordingly. When the parameter indicates contention resolution is not required, the UE skips the procedure, reducing power consumption while maintaining acceptable reliability for non-critical data.
Solution Approach 2:
The patent applies partial action by performing only the necessary steps for data transmission. When contention resolution is configured as not required, the UE performs partial transmission without the complete contention resolution procedure, which is sufficient for scenarios where data loss is acceptable and reduces overall power consumption.
2Reliability
If contention resolution procedure is performed for early data transmission, then data transmission reliability is improved, but transmission efficiency decreases
Solution Approach 1:
The patent changes the parameter of contention resolution requirement from mandatory to conditional through network configuration. This parameter change enables the system to adapt between reliable but slow transmission (when contention resolution is required) and efficient but potentially less reliable transmission (when it is not required), optimizing productivity for different service scenarios.
Solution Approach 2:
The patent introduces dynamic behavior where the UE adapts its transmission procedure based on configured parameters. The system dynamically switches between performing contention resolution and skipping it, allowing transmission efficiency to be optimized for scenarios like mMTC where rapid transmission of non-critical data is prioritized over absolute reliability.
3Use of energy by moving object
If contention resolution procedure is skipped for early data transmission, then power consumption is reduced and transmission efficiency improves, but data transmission reliability decreases
Solution Approach 1:
The patent uses parameter configuration to control the trade-off between power consumption and reliability. The network configures a parameter that indicates whether contention resolution is required, allowing the system to select the appropriate transmission mode based on service requirements, achieving reduced power consumption for non-critical services.
Solution Approach 2:
The patent applies different transmission qualities to different data scenarios. For data where loss is acceptable (like in mMTC), the system uses the simplified transmission mode without contention resolution, applying local quality optimization rather than uniformly high reliability across all data types.
4Productivity
If contention resolution procedure is skipped for early data transmission, then resource utilization efficiency improves, but data transmission reliability decreases
Solution Approach 1:
The patent changes the operational parameter from mandatory contention resolution to conditional based on network configuration. This enables resource utilization efficiency to be improved for appropriate scenarios by skipping unnecessary contention resolution steps, while the network maintains the ability to require it when reliability is critical.
Solution Approach 2:
The patent applies partial action by performing only the essential transmission steps when contention resolution is not required. This partial procedure is sufficient for non-critical data transmission scenarios, improving resource utilization efficiency by avoiding unnecessary steps while maintaining adequate functionality.
Data Source
AI summary
Provided are a method for skipping contention resolution. According to an embodiment of the present disclosure, the method includes: detecting data to be transmitted; receiving information informing that the data does not require a contention resolution; transmitting the data on a logical channel; and completing transmission of the data, based on an acknowledgement for the data or a number of transmission of the data.