Reference Timing Determination in Wireless Backhaul Nodes
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Solution Overview
Problem
Current wireless communication systems lack an effective solution for setting reference timing between each hop of a link, particularly in high-frequency communication systems like the New Radio (NR) system, where high-frequency carriers face challenges such as large free propagation loss and rain attenuation, affecting coverage performance.
Innovation Solution
A method and device for determining reference timing using open-loop, closed-loop, and external synchronization source modes, where nodes communicate through wireless air interface signaling to align and adjust timing, including updating transmission delay tables and using timing advance values to synchronize downlink and uplink transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If high-frequency carriers (e.g., 28 GHz, 45 GHz, 70 GHz) are adopted to increase bandwidth, then spectrum resources are improved, but coverage performance deteriorates due to large free propagation loss, oxygen absorption, and rain attenuation
Solution Approach 1:
The patent introduces wireless backhaul transmission as an intermediary solution to address the coverage limitation of high-frequency carriers. The backhaul link acts as a mediator that relays signals between nodes, enabling high-frequency spectrum usage while maintaining coverage through intermediate relay points that overcome the inherent propagation losses at high frequencies
2Ease of manufacture
If wireless backhaul transmission is introduced to reduce network deployment costs, then ease of manufacture is improved, but timing synchronization between hops becomes more complex
Solution Approach 1:
The patent applies preliminary action by pre-configuring timing advance values and transmission delay tables before actual data transmission. The system pre-calculates and stores timing parameters for each hop in the backhaul chain, allowing nodes to synchronize their transmissions without complex real-time coordination, thus simplifying the timing synchronization complexity while maintaining easy network deployment
3Reliability
If timing advance values are calculated to ensure simultaneous data arrival at base station, then reliability is improved, but device complexity increases due to multiple timing parameters and synchronization mechanisms
Solution Approach 1:
The patent implements self-service by enabling each node in the backhaul chain to autonomously determine its own reference timing using pre-configured timing advance values and transmission delay tables. Each node independently calculates its timing parameters based on stored information without requiring complex centralized coordination, thus achieving reliable synchronization while reducing overall device complexity through distributed autonomous operation
Data Source
AI summary
Provided are a method and device for determining a reference timing, a storage medium and an electronic device. The method comprises: a second node determining a reference timing of the second node by using at least one of the following modes: an open-loop mode, a closed-loop mode and an external synchronization source mode. By means of the present disclosure, the problem in the related art that there is no technical solution for setting a reference timing between each-hop links yet exists is solved.