Narrowband LTE Synchronization Signal Transmission Pattern
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Solution Overview
Problem
The existing designs for synchronization signals and physical broadcast channels in narrowband LTE systems are unreasonable, leading to inefficiencies in transmission.
Innovation Solution
A method where a base station periodically transmits synchronization signals, including primary and secondary synchronization signals, and a Physical Broadcast Channel (PBCH) according to a preset transmission subframe pattern, optimizing the position of these signals within radio frames to ensure reasonable and efficient transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the existing LTE designs for synchronization signals and physical broadcast channels are used in narrowband systems, then the system can reuse GSM spectrum and reduce interference, but the transmission efficiency and合理性 of synchronization signal and PBCH design become unreasonable
Solution Approach 1:
The patent changes the transmission parameters of synchronization signals and PBCH by introducing a periodic transmission mechanism with configurable periods (e.g., 10ms, 20ms, 40ms, 80ms) and adjusting the time-domain positions of these signals within radio frames. This allows the system to adapt transmission characteristics to narrowband requirements while maintaining spectrum reuse capabilities.
Solution Approach 2:
The patent makes the transmission pattern dynamic by allowing flexible configuration of transmission periods and subframe positions. The base station can adaptively adjust when to transmit synchronization signals and PBCH based on system conditions, rather than using fixed positions, thereby improving transmission efficiency in narrowband scenarios.
2Reliability
If synchronization signals and PBCH are transmitted frequently to improve reliability, then transmission reliability increases, but system resources are wasted and transmission efficiency decreases
Solution Approach 1:
The patent implements periodic transmission of synchronization signals and PBCH with configurable periods (10ms, 20ms, 40ms, or 80ms). This periodic action ensures that signals are transmitted reliably at appropriate intervals while avoiding excessive transmission that would waste system resources. The terminal can acquire synchronization information within these periodic intervals without requiring continuous transmission.
Data Source
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AI summary
The present invention provides a synchronization signal transmission method, device, and system. The method comprises: a base station periodically sends, according to a preset subframe sending pattern, to a terminal a synchronization signal and a physical broadcast channel (PBCH), wherein the synchronization signal comprises a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), and the subframe sending pattern includes positions of subframes sending the synchronization signal and the PBCH in multiple radio frames during a preset time period. The present invention addresses the problem of an unreasonable design of a synchronization signal and a physical broadcast channel in an LTE narrowband system, thus achieving reasonable transmission of a synchronization signal and physical broadcast channel in the narrowband system.