URLLC Transmission Delay Measurement via Protocol Layer Segmentation
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Solution Overview
Problem
Current methods for accurately measuring transmission delay between a terminal and a core network in ultra-reliable and low latency communication (URLLC) systems face challenges, including inflexible delay specifications and additional processing errors that affect accuracy, particularly at millisecond-level delays.
Innovation Solution
Establishing a new protocol layer between the terminal and the core network, or extending SDAP and PDCP layer protocols, to dynamically measure delays using data packets with timestamp information, allowing for precise control of transmission delays within defined thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional delay measurement methods are used in URLLC systems, then the measurement process is simplified, but the measurement precision deteriorates due to additional processing errors and inflexible delay specifications
Solution Approach 1:
The patent segments the delay measurement process by introducing a new protocol layer (first protocol layer) between the terminal and core network, or by extending existing SDAP and PDCP layer protocols. This segmentation allows delay measurement to be performed at a specific protocol layer without interfering with other network functions, thereby improving measurement precision while managing complexity through structured division of responsibilities.
Solution Approach 2:
The patent introduces an intermediary protocol layer or extended protocol functions that act as mediators between the terminal and core network for delay measurement. This intermediary handles timestamp generation, packet marking, and delay calculation, isolating the measurement functionality from other network operations and reducing processing errors that would otherwise affect measurement precision.
2Adaptability or versatility
If fixed delay specifications are used in URLLC, then implementation is straightforward, but adaptability deteriorates when dynamic delay control is needed
Solution Approach 1:
The patent implements dynamic delay specifications by allowing the first protocol layer or extended SDAP/PDCP protocols to adjust delay thresholds and measurement parameters in real-time based on network conditions and service requirements. This enables the system to adapt to varying URLLC demands while maintaining operational simplicity through automated protocol-based control mechanisms.
Data Source
AI summary
An information transmission method and apparatus are provided. The method comprises: a first node sends a first data packet to a second node, the first data packet carrying at least one of the following information: first identifier information, first sequence number information, and first timestamp information, wherein the first identifier information is used for instructing the second node returns a second data packet after receiving the first data packet; the first sequence number information is used for identifying the first data packet; and the first timestamp information is used for instructing the first node to send time information of the first data packet.