Virtual Multi-Antenna Signalling for Network Congestion
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Solution Overview
Problem
Existing mobile communication networks are unable to effectively support downlink virtual MIMO technology, limiting antenna sharing between users and resulting in suboptimal network performance and congestion.
Innovation Solution
A method and system for signalling transmission in a virtual multi-antenna system, where N terminals receive CSI-RSs from a Node B, and one terminal calculates and shares channel-related information with other terminals to form a subset, enabling comprehensive CSI feedback to the Node B, facilitating antenna sharing and improving network congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional MU-MIMO transmission manner is adopted, then multiple users share physical resources allocated by Node B, but antenna sharing between users is not achieved and network congestion occurs
Solution Approach 1:
The patent merges multiple users' receiving antennas into a virtual multi-antenna system. Multiple users share the same time-frequency resources and combine their receiving antennas to form a collaborative receiving system, achieving antenna sharing without requiring complex coordinated scheduling. This resolves the contradiction by combining resources (antennas) across users to improve productivity while maintaining relatively simple system architecture through natural resource sharing.
2Reliability
If downlink virtual MIMO technology is implemented, then antenna sharing between users is enabled and link performance is improved, but existing mobile communication networks cannot effectively support it
Solution Approach 1:
The patent enables the terminal to autonomously perform virtual MIMO operations without requiring network side support or modification. The terminal independently combines channel state information from multiple users, performs joint decoding, and achieves virtual multi-antenna reception. This self-service approach allows downlink virtual MIMO to operate in existing networks without requiring network adaptability changes, resolving the contradiction between improved reliability and network compatibility.
3Productivity
If multiple terminals form a virtual multi-antenna system, then comprehensive CSI feedback is achieved and transmission efficiency is improved, but signalling overhead increases
Solution Approach 1:
The patent merges channel state information from multiple users to form comprehensive CSI feedback. Instead of each user independently feedbackting their own CSI, the terminal combines channel state information from multiple users sharing the same resources, achieving more accurate and comprehensive channel characterization. This merging approach improves transmission efficiency through better precoding and resource allocation while the combined feedback replaces multiple separate feedback streams, potentially reducing overall signalling overhead.
Data Source
AI summary
Disclosed are a method, device and system for signalling transmission in a virtual multi-antenna system. The method includes N terminals receive CSI-RSs from a Node B, N being a positive integer larger than or equal to 2; and one terminal in M terminal(s) calculates channel related information from the Node B to the terminal according to the received CSI-RS, and sends the channel related information to L terminal(s), wherein the M terminal(s) form(s) a subset of the N terminals, M is smaller than or equal to N and larger than or equal to 1, and L is smaller than or equal to N and larger than or equal to 1. A first sending unit in the device is configured to calculate channel related information from a Node B to one terminal in M terminal(s) according to a CSI-RS received by the terminal, and send the channel related information to L terminal(s).