LIS Reference Signal Configuration for Multi-User Wireless Communication
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Solution Overview
Problem
The introduction of large intelligent surfaces (LIS) in cellular communication systems affects both the link quality of individual users and the channel quality of other users due to their passive reflection properties, necessitating a cooperative communication mechanism that considers multiple users' transmission modes.
Innovation Solution
An electronic apparatus and method that determines whether target user equipment should use an LIS-assisted communication mode, configures and transmits LIS reference signals for channel status measurement, and performs accurate channel measurements to select appropriate LISs and beam directions, thereby minimizing interference among users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LIS-assisted communication mode is introduced to improve link quality for users with poor direct links, then communication quality for individual users is improved, but channel quality for other users deteriorates due to passive reflection properties
Solution Approach 1:
The patent changes the operational parameters of the LIS by configuring different reflection beam directions and phases for different user equipments. The base station determines appropriate LIS reflection configurations based on channel measurements, adjusting the reflection characteristics to serve multiple users simultaneously while minimizing mutual interference through coordinated parameter optimization.
2Measurement precision
If LIS reference signals are configured for channel status measurement, then measurement precision is improved, but system overhead increases
Solution Approach 1:
The LIS reference signal is designed to serve multiple functions simultaneously: it enables channel status measurement for LIS-assisted communication, supports beam direction identification, and facilitates cooperative transmission mode selection. This multi-functionality reduces the need for separate signaling mechanisms, thereby lowering overall system overhead while maintaining measurement precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate channel measurement and cooperative transmission modes among multiple LISs and UEs, reducing overhead and achieving energy-efficient communication while addressing communication blind spots in cellular networks.
Implementation Method 1
the LIS modifies a phase of an incident wave to obtain a reflected wave in an appropriate reflection direction
Implementation Method 2
a signal for a user is reflected by the LIS and then provided to the user in a certain reflection direction
Data Source
AI summary
Provided in the present disclosure are an electronic device and method for wireless communication, and a computer readable storage medium. The electronic device comprises: a processing circuit, which is configured to: determine whether a target user equipment (UE) will apply a large intelligent surface (LIS)-assisted communication mode; and, if it is determined that the target UE will apply the LIS-assisted communication mode, send to the target UE configuration information of an LIS reference signal for channel state measurement in the LIS-assisted communication mode.