Relay Node Synchronization Signal Configuration via Air Interface
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Solution Overview
Problem
In wireless communications, especially in new radio (NR) systems, relay nodes face challenges in obtaining and sending synchronization signals efficiently, particularly due to differences from conventional LTE systems, which affect deployment costs and flexibility, especially in high frequency bands.
Innovation Solution
A method where relay nodes receive synchronization signal information from a parent node through an air interface, using messages like RRC reconfiguration or MAC control elements, allowing automatic configuration and flexible operation in various bandwidth parts to adapt to service requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If relay nodes obtain synchronization signal information through manual configuration, then configuration accuracy is improved, but deployment cost and time increase
Solution Approach 1:
The relay node automatically obtains synchronization signal information through air interface messages from the parent node, eliminating the need for manual configuration. The node configures itself by receiving and processing RRC messages or MAC control elements that contain the synchronization parameters, thereby reducing deployment time while maintaining accuracy through automated error-free transmission.
Solution Approach 2:
The patent replaces manual configuration (mechanical human operation) with automated air interface message transmission. The synchronization signal information is transmitted electronically through RRC messages or MAC control elements, substituting the manual process with an automated communication system that reduces time and labor costs while maintaining precision.
2Device complexity
If relay nodes use fixed bandwidth part configuration, then system complexity is reduced, but adaptability to service requirements decreases
Solution Approach 1:
The relay node is configured to operate in different bandwidth parts dynamically based on service requirements. The air interface messages contain indicators that enable the relay node to switch between bandwidth parts, allowing the system to adapt to varying service demands while maintaining manageable complexity through standardized configuration mechanisms.
Solution Approach 2:
The relay node is designed with multi-functionality to operate across different bandwidth parts. By receiving universal configuration messages that indicate the appropriate bandwidth part, the node can serve diverse service requirements (enhanced mobile broadband, ultra-reliable low-latency communications, massive machine-type communications) without requiring separate dedicated configurations for each service type.
3Adaptability or versatility
If relay nodes obtain synchronization signal information through air interface messages, then deployment flexibility is improved, but information transmission complexity increases
Solution Approach 1:
The synchronization signal information is segmented into standardized fields within RRC messages or MAC control elements. This segmentation allows the relay node to process only the relevant portions of the message according to its specific needs, reducing processing complexity while maintaining deployment flexibility. The information is divided into manageable components such as synchronization signal parameters, bandwidth part indicators, and frequency configuration.
Data Source
AI summary
A method for sending a synchronization signal in a relay system, and the method includes receiving, by a relay node, synchronization signal information sent by a parent node through an air interface, where the synchronization signal information comprises at least one of a subcarrier spacing of a synchronization signal, information about an operating frequency band of the relay node, information about a physical broadcast channel of the relay node, a synchronization signal periodicity, or indication information of a synchronization signal obtaining manner, and sending, by the relay node, the synchronization signal based on the synchronization signal information.