Flexible Reference Signal Configuration in Wireless Data Transmission
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Solution Overview
Problem
In wireless communications, the existing method of inserting a reference signal at a fixed location in a resource unit is inflexible, leading to excessive overheads or insufficient reference signals, which cannot meet the requirements of the actual propagation environment.
Innovation Solution
A data transmission method that allows for flexible configuration of reference signals by using first and second indication information to indicate the presence or absence of a reference signal in a resource unit, enabling proper configuration to avoid excessive or insufficient overheads, and allowing for phase noise cancellation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reference signal is inserted at a fixed location of a resource unit, then the receiving end can restore the sent data, but the reference signal cannot be flexibly configured causing excessive overheads
Solution Approach 1:
The patent applies dynamics by making the reference signal configuration flexible and adaptable rather than fixed. The network device dynamically determines whether to insert a reference signal based on propagation environment conditions, and the terminal adaptively selects between different reception modes (first mode for no reference signal, second mode for reference signal present). This dynamic configuration allows the system to optimize reference signal overhead according to actual channel conditions while maintaining data restoration capability when needed.
2Quantity of substance
If a reference signal is inserted into a small quantity of resource units, then overheads are reduced, but the reference signal configuration is inflexible
Solution Approach 1:
The patent applies parameter changes by introducing a configurable parameter that determines reference signal insertion behavior. The network device can change the parameter to indicate whether a reference signal is inserted in each resource unit, and the terminal changes its reception mode parameter accordingly. This parameter-based control enables flexible adaptation of reference signal configuration to match varying propagation conditions, resolving the contradiction between reducing overhead and maintaining flexibility.
3Ease of manufacture
If the reference signal configuration is fixed, then implementation is simple, but it cannot meet the requirements of actual propagation environment
Solution Approach 1:
The patent applies segmentation by dividing the reference signal reception process into distinct modes. The terminal is configured to operate in a first reception mode when no reference signal is inserted and a second reception mode when a reference signal is inserted. The network device segments the resource units by indicating in each whether a reference signal is present. This segmented approach maintains implementation simplicity through clear mode distinction while achieving propagation environment adaptability through flexible mode selection.
Data Source
AI summary
Embodiments of this application provide a data transmission method and a device. The method includes: obtaining, by a terminal, first indication information or second indication information, where the first indication information is used to indicate that a reference signal is carried in a resource unit, and the second indication information is used to indicate that no reference signal is carried in a resource unit; and performing, by the terminal, data transmission according to the first indication information or the second indication information. The reference signal can be properly configured in the embodiments.