Dynamic Reference Signal Resource Allocation to Reduce Collisions
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Solution Overview
Problem
Conventional methods fix the location of transmission resources for reference signals, leading to collisions with other messages, affecting transmission performance and causing demodulation or decoding errors.
Innovation Solution
Dynamically determine transmission resources for reference signals based on time domain parameters, including symbol locations and space domain resources, to reduce collisions with other messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the location of transmission resources for reference signals is fixed, then the transmission resource allocation is simple, but the transmission resource may collide with other messages, affecting transmission performance
Solution Approach 1:
The patent applies dynamics by making the reference signal transmission resource location variable rather than fixed. The network device dynamically determines the symbol location of the reference signal based on the message transmission resource location, allowing the reference signal to be flexibly positioned in different symbols to avoid collisions with messages, thus improving transmission reliability while maintaining reasonable allocation complexity
Solution Approach 2:
The patent changes the parameter of transmission resource location from a fixed value to a dynamically determined value. By adjusting the symbol location parameter based on message resource requirements, the system optimizes resource allocation to prevent collisions between reference signals and messages, resolving the contradiction between allocation simplicity and transmission reliability
2Ease of operation
If the transmission resource location is fixed, then the resource allocation is straightforward, but collision with other messages causes demodulation or decoding errors
Solution Approach 1:
The patent applies preliminary action by determining the reference signal transmission resource location in advance based on the message resource location. The network device calculates the appropriate symbol location for the reference signal before actual transmission, ensuring that the reference signal and message do not collide, thus eliminating the harmful effect of collisions while maintaining ease of operation
Solution Approach 2:
The patent introduces the message transmission resource location as an intermediary parameter to determine the reference signal resource location. By using the message resource information as a reference, the system coordinates the allocation of reference signal resources to avoid overlaps, reducing collisions while keeping the allocation process straightforward
3Reliability
If dynamic resource determination is used, then collision probability with other messages is reduced, but the determination complexity increases
Solution Approach 1:
The patent applies local quality by making the reference signal resource determination localized to specific message transmissions. Instead of implementing a complex global resource allocation system, the network device determines reference signal locations based on local message resource requirements, achieving collision avoidance with manageable determination complexity while improving transmission efficiency
Data Source
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AI summary
Embodiments of this application disclose a reference signal transmission method, a message transmission method, a transmission resource determining method, and an apparatus. When a first device needs to transmit a reference signal, the first device may determine, from a slot and based on a time domain resource parameter of the reference signal, transmission resource information related to a transmission resource used to transmit the reference signal, where the transmission resource information may include a symbol location of the transmission resource in the slot and/or a space domain resource on a symbol in the transmission resource. Compared with a conventional manner in which a reference signal can be transmitted only at a fixed location, the transmission resource for transmitting the reference signal can be dynamically determined based on the time domain resource parameter of the reference signal. This reduces a probability of colliding with sending of another message during sending of the reference signal. In addition, the transmission resource of the reference signal can be determined. When a first resource has a time domain portion overlapping with a second resource, the first device may send only a part of the reference signal or skip sending the reference signal, thereby improving transmission performance of the first device.