5G Sidelink Reference Signal Sequence Generation
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Solution Overview
Problem
In 5G sidelink communication systems, the existing methods for configuring Positioning Reference Signal (PRS) sequences result in large signaling overheads, as the target UE does not know the sequence ID configured by the network for the anchor point UE, leading to inefficient resource management.
Innovation Solution
A method where a first communication node generates a target reference signal sequence using a pseudo-random sequence initialized by a target formula that includes resource numbers, and maps it to time-frequency resources, allowing the second communication node to determine the sequence based on the resource number of the received target reference signal, thereby reducing the need for explicit signaling of resource identifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If high-layer parameter configuration is used to generate sequence IDs for different PRS sequences, then multiple reference signal sequences can be supported, but signaling overhead increases due to the need to notify target UE of the sequence ID configured by the network
Solution Approach 1:
The target UE autonomously determines the sequence ID for generating the reference signal sequence by using a formula that incorporates the resource number of the received reference signal. This self-service mechanism eliminates the need for the network to explicitly notify the target UE of the sequence ID, thereby reducing signaling overhead while still supporting multiple reference signal sequences through different resource numbers
Solution Approach 2:
The resource number serves as an intermediary parameter that links the received reference signal to the sequence ID generation. Instead of directly signaling the sequence ID, the system uses the resource number as a mediator that the target UE can substitute into a formula to derive the appropriate sequence ID, thus reducing the amount of explicit signaling required
Data Source
AI summary
Provided are a signal sending method and apparatus, a signal receiving method and apparatus, and a storage medium and an electronic apparatus. The sending method includes: a first communication node generating a target reference signal sequence of target reference signals, where the target reference signal sequence is generated by a pseudo-random sequence, the pseudo-random sequence is a sequence that has been initialized by using a target formula, and the target formula includes resource numbers of the target reference signals; and the first communication node sending the target reference signals, where the target reference signals are formed after the target reference signal sequence is mapped to time-frequency resources.