5G Beam Information Sharing for SRS Measurement Efficiency
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Solution Overview
Problem
In 5G communication systems, the use of high-frequency signals results in reduced energy transmission distance, necessitating analog beam technology to concentrate signal energy. However, this increases SRS measurement time for terminal devices, reducing measurement efficiency and positioning accuracy.
Innovation Solution
A signal transmission method where a serving cell assists a neighboring cell in obtaining beam information between the neighboring cell and the terminal device, allowing the neighboring cell to directly receive SRS using the beam information, thereby avoiding the need to sweep each beam of the terminal device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If analog beam technology is used to concentrate signal energy, then transmission distance is increased, but SRS measurement time is increased and measurement efficiency is reduced
Solution Approach 1:
The serving cell performs beam measurement with the terminal device in advance to obtain beam information before the neighboring cell needs to measure SRS. This preliminary action allows the neighboring cell to directly use the obtained beam information for SRS measurement, avoiding the need to sweep through all beams and thus reducing measurement time while maintaining long transmission distance capability
Solution Approach 2:
The serving cell acts as an intermediary that performs beam measurement on behalf of the neighboring cell. By obtaining beam information through downlink reference signal measurement and sharing it with the neighboring cell, the serving cell enables the neighboring cell to directly receive SRS without sweeping beams, thereby resolving the time efficiency contradiction
2Length of moving object
If analog beam technology is used to concentrate signal energy, then transmission distance is increased, but positioning efficiency is reduced
Solution Approach 1:
Beam information is obtained in advance through preliminary downlink reference signal measurement between the serving cell and terminal device. This advance preparation enables the neighboring cell to directly measure SRS without time-consuming beam sweeping, thereby improving positioning efficiency while maintaining the long transmission distance capability provided by analog beam technology
Solution Approach 2:
The serving cell serves as an intermediary that facilitates efficient positioning by obtaining beam information and sharing it with the neighboring cell. This intermediary role enables the neighboring cell to directly receive and measure SRS using pre-obtained beam information, significantly improving positioning efficiency without sacrificing transmission distance
3Reliability
If neighboring cell sweeps each beam of terminal device to detect signal, then signal detection is achieved, but measurement efficiency is reduced and energy consumption increases
Solution Approach 1:
Beam information is obtained in advance through downlink reference signal measurement before the neighboring cell needs to detect the terminal device signal. This preliminary action eliminates the need for the neighboring cell to sweep through all beams, allowing direct signal detection using the pre-obtained beam information, thus improving measurement efficiency while maintaining reliable signal detection
Solution Approach 2:
The serving cell acts as an intermediary that obtains beam information and shares it with the neighboring cell, enabling the neighboring cell to directly detect the terminal device signal without sweeping beams. This intermediary approach maintains reliable signal detection while significantly improving measurement efficiency and reducing energy consumption
4Reliability
If neighboring cell sweeps each beam of terminal device, then signal detection is achieved, but energy consumption increases
Solution Approach 1:
Beam information is obtained in advance through downlink reference signal measurement, eliminating the need for the neighboring cell to sweep through all beams for signal detection. This preliminary action reduces the energy consumption of beam sweeping while maintaining reliable signal detection capability through direct reception using pre-obtained beam information
Solution Approach 2:
The serving cell serves as an intermediary that obtains and shares beam information with the neighboring cell, enabling direct signal detection without beam sweeping. This intermediary role maintains reliable signal detection while significantly reducing the energy consumption associated with sweeping through multiple beams
Data Source
AI summary
This application provides a signal transmission method and apparatus. The method includes: A neighboring cell sends downlink reference signal resource configuration information to a serving cell. The serving cell sends a downlink reference signal measurement request including downlink reference signal resource configuration information to a terminal device. The neighboring cell and the terminal device transmit a downlink reference signal based on the downlink reference signal resource configuration information. The terminal device obtains a downlink reference signal measurement result. The terminal device sends the downlink reference signal measurement result to the serving cell. The serving cell sends the downlink reference signal measurement result to the neighboring cell, or sends, to the neighboring cell, beam information that is about a beam between the neighboring cell and the terminal device and that is determined based on the downlink reference signal measurement result.