Beam Alignment in NR Signal Transmission
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Solution Overview
Problem
In high-frequency-based beam transmission technologies, particularly in New Radio (NR) scenarios, beam misalignment between base stations and terminals can lead to communication failures, as existing methods neglect beam coordination, resulting in inconsistent understanding of beams between the two ends, causing signals to be undeliverable.
Innovation Solution
A method and device for signal transmission that determine the transmission mode based on spatial filtering parameters, reference signals, peer end indication information, time intervals, and configuration information to ensure consistent beam alignment and coordination between base stations and terminals, allowing simultaneous transmission of uplink signals in a time slot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If beam transmission technologies are used in high-frequency NR scenarios, then communication capacity and speed are improved, but beam misalignment between base stations and terminals occurs leading to communication failures
Solution Approach 1:
The patent applies preliminary action by determining the transmission mode of the first signal before actual transmission based on spatial filtering parameter relationships. The base station determines whether to use a first spatial filtering parameter or second spatial filtering parameter in advance, ensuring beam alignment is established before data transmission begins, thus preventing communication failures while maintaining high-speed beam transmission
2Adaptability or versatility
If independent spatial filtering parameters are used for first signal and second signal, then transmission flexibility is improved, but beam consistency between base station and terminal deteriorates
Solution Approach 1:
The patent implements feedback by having the base station determine the transmission mode based on the relationship between spatial filtering parameters of different signals. The base station receives indication information about peer end spatial filtering parameters and uses this feedback to select appropriate spatial filtering parameters that maintain beam consistency while allowing transmission flexibility for different signal types
Solution Approach 2:
The patent applies parameter changes by dynamically selecting between first and second spatial filtering parameters based on signal relationships. When the first signal and second signal have different spatial filtering parameter relationships, the base station changes the spatial filtering parameter used for transmission, allowing flexibility while maintaining consistency through condition-based parameter selection
3Reliability
If beam alignment coordination is implemented between base station and terminal, then communication reliability is improved, but system complexity increases
Solution Approach 1:
The patent applies self-service by enabling the base station to autonomously determine transmission modes based on spatial filtering parameter relationships without requiring complex coordination protocols with the terminal. The base station independently analyzes the relationships between first and second spatial filtering parameters and selects appropriate parameters, reducing system complexity while maintaining reliability through intelligent autonomous decision-making
Data Source
AI summary
Disclosed are a method and a device for signal transmission. The method includes: determining a transmission mode of a first signal according to at least one of the following: relationship information between a first spatial filtering parameter and a second spatial filtering parameter; a third reference signal associated with the second signal; relationship information between a first reference signal and a second reference signal; relationship information between DCIs corresponding to the first and the second signals; whether a time interval between the first and second signals being greater than predetermined threshold; information type of information in the first signal; time delay information required for switching the spatial filtering parameters; a configuration information indicating whether the first signal and the second signal share one spatial filtering parameter; and sending or receiving the first signal using the determined transmission mode.