Beam Selection via Reference Signals Without Feedback Channels
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Solution Overview
Problem
In vehicle networking systems, the selection of an optimal beam for data transmission is challenging due to resource allocation difficulties in feedback channels, potential delays in beam information feedback, and omnidirectional feedback modes that may lead to incorrect reception of beam information.
Innovation Solution
A method where a first terminal receives a first reference signal through multiple channels with time division resources, selects an optimal beam based on signal quality, and transmits data on this beam, eliminating the need for a feedback channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a feedback channel is designed for beam information feedback, then beam selection can be achieved, but resource allocation difficulty increases because transmission resources are obtained through competition mode
Solution Approach 1:
The terminal independently determines the optimal beam by measuring reference signals from multiple channels without requiring feedback channel resources. The system serves itself by making the receiving terminal capable of autonomous beam selection, eliminating the need for complex feedback resource allocation mechanisms in the competition mode
2Reliability
If beam information is fed back through a feedback channel, then optimal beam can be selected, but feedback delay increases which may render the beam information invalid
Solution Approach 1:
The terminal performs beam measurement and selection in advance by receiving reference signals on multiple channels before actual data transmission begins. The optimal beam is determined preliminarily through channel polling, allowing immediate use of the selected beam without waiting for feedback channel transmission, thus eliminating feedback delay
3Ease of operation
If omnidirectional mode is used for feedback transmission, then simplicity is maintained, but reception reliability decreases because correct reception cannot be guaranteed
Solution Approach 1:
The receiving terminal independently measures reference signals from multiple channels and autonomously determines the optimal beam without requiring feedback transmission. This self-service approach eliminates the feedback transmission step entirely, avoiding both the simplicity-reliability tradeoff and the associated resource allocation and delay problems
Data Source
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AI summary
Disclosed are a data transmission method and apparatus, and a computer storage medium. The method comprises: a first terminal selects a target channel from N channels based on a first reference signal received on the N channels; the first terminal transmits data or signaling to a second terminal on the target channel.