Wireless Network Synchronization Acquisition via Zadoff-Chu Signals
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Solution Overview
Problem
Current wireless communication technologies lack an efficient method for individual nodes in decentralized control wireless networks to acquire network synchronization, which is essential for enhancing system throughput and reducing power consumption.
Innovation Solution
A method for network synchronization acquisition involving the generation and transmission of synchronization signals, including a synchronization reference signal and a beacon, using a Zadoff-Chu sequence, with nodes able to select specific slots or frames for synchronization, and incorporating propagation delay measurement and adjustment to ensure accurate timing alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If decentralized control manner is used without network synchronization, then ease of operation is improved, but system throughput and power consumption efficiency deteriorate
Solution Approach 1:
The patent segments the synchronization function into two parts: network synchronization acquisition (performed by all nodes) and link-level synchronization (performed individually). This allows decentralized control to maintain ease of operation while achieving network synchronization to improve system throughput through structured resource allocation.
Solution Approach 2:
The patent implements preliminary network synchronization acquisition before data transmission begins. Nodes acquire network synchronization by detecting synchronization signals and adjusting their timing accordingly, which enables subsequent efficient resource allocation and improves overall system throughput.
2Device complexity
If network synchronization is implemented in decentralized manner, then device complexity is reduced, but synchronization acquisition capability worsens
Solution Approach 1:
The patent introduces synchronization signals as an intermediary mechanism in decentralized networks. These signals serve as mediators that enable nodes to autonomously acquire network synchronization without complex centralized control, maintaining low device complexity while ensuring reliable synchronization acquisition.
Solution Approach 2:
The patent enables nodes to perform self-service synchronization acquisition by detecting synchronization signals transmitted by other nodes and autonomously adjusting their timing. This self-service mechanism reduces device complexity compared to centralized control while ensuring reliable synchronization through standardized signal detection procedures.
3Measurement precision
If synchronization signals are transmitted frequently, then synchronization accuracy is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic transmission of synchronization signals at predetermined intervals rather than continuously. This periodic action maintains synchronization accuracy by regularly updating timing information while significantly reducing power consumption compared to continuous transmission.
Solution Approach 2:
The patent uses brief synchronization signal transmissions that are short in duration but sufficient for acquisition. These short-lived signals provide the necessary synchronization information without requiring continuous or lengthy transmissions, thereby reducing overall power consumption while maintaining synchronization accuracy.
Data Source
AI summary
Disclosed is a method for network synchronization acquisition in a wireless network. A synchronized node transmits a first synchronization reference signal, a second synchronization reference signal, and a beacon according to a predetermined period. A non-synchronized node receives the first synchronization reference signal, the second synchronization signal, and the beacon from at least one transmitting node. Then, the non-synchronized node acquires network synchronization temporarily based on the first synchronization reference signal, decodes the beacon, and checks whether at least one transmitting node exists or not. Then, the non-synchronized node requests a network synchronization forwarding service or a time adjustment, and acquires synchronization based on the provided network synchronization forwarding service.