Multiple Synchronization Signals for High-Band 5G Detection
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Solution Overview
Problem
In high-band 5G communication, the adoption of MIMO technology increases hardware costs and reduces transceiver radio frequency units, leading to poor SS detection performance in LTE systems, affecting subsequent broadcast channel detection.
Innovation Solution
Transmission of multiple synchronization signals (SSs) within a single period, utilizing predefined relationships and beam forming weights to enhance detection performance of both SSs and broadcast channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MIMO antenna technology is adopted to achieve higher transmission rate in high band, then transmission rate is improved, but hardware cost increases and number of transceiver radio frequency units is reduced
Solution Approach 1:
The patent segments the synchronization signal transmission into multiple beams directed at different spatial locations. Instead of using multiple radio frequency units simultaneously, the system divides the transmission task across multiple time instances, with each instance transmitting a synchronized beam in a different spatial direction. This segmentation allows the system to achieve comprehensive coverage and high transmission quality without requiring proportionally expensive hardware
Solution Approach 2:
The patent implements periodic transmission of synchronized beams across multiple time instances. Each period includes transmitting synchronized beams to different spatial locations sequentially. This periodic action allows the limited radio frequency units to serve multiple spatial directions over time, achieving the coverage and performance benefits of multiple units without actually requiring that many units simultaneously
2Device complexity
If number of transceiver radio frequency units is reduced to lower cost, then hardware cost is improved, but SS detection performance deteriorates
Solution Approach 1:
The patent applies preliminary beam forming processing to the synchronized signals before transmission. By pre-shaping the beams to target specific spatial directions and pre-coordinating the transmission timing across different units, the system ensures that each transmitted beam has optimal detection characteristics. This preliminary action compensates for the reduced number of radio frequency units, allowing each unit to contribute more effectively to overall detection performance
Solution Approach 2:
The patent merges the signals from multiple synchronized beams transmitted at different time instances and spatial directions. The terminal device combines these signals to achieve better detection performance than any single beam could provide alone. This merging effect allows the system to achieve the performance benefits of multiple simultaneous transmissions using fewer radio frequency units over time
3Device complexity
If single SS transmission is used in LTE system, then device complexity is reduced, but detection performance of SS and subsequent broadcast channel deteriorates
Solution Approach 1:
The patent extends the synchronization signal transmission from a single spatial direction to multiple spatial directions by introducing a spatial dimension. Multiple synchronized beams are transmitted to different spatial locations within the same time instance or across multiple time instances. This dimensional expansion allows the system to provide comprehensive spatial coverage and improved detection performance without proportionally increasing device complexity, as the additional spatial diversity is achieved through coordinated transmission rather than independent hardware
Data Source
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AI summary
Embodiments of the present invention provide a method for signal transmission, a network device and a terminal device. The method for signal transmission comprises: a network device sends a plurality of synchronization signals within one synchronization signal period; the terminal device detects the plurality of synchronization signals sent by the network device within one synchronization signal period; and the network device sends a broadcast channel corresponding to the plurality of synchronization signals or other signals, and the terminal device detects, according to the detected plurality of synchronization signals, the broadcast channel corresponding to the plurality of synchronization signals and sent by the network device, or other signals sent by the network device. By means of the method for signal transmission, the network device and the terminal device, the signal detection performance of the terminal device can be improved.