Uplink Beam Selection for Flexible NR Channel Transmission
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Solution Overview
Problem
In the NR system, the efficiency of uplink channel transmission is reduced due to the limited flexibility in selecting beams for uplink channel transmission, as the beam used is determined based solely on a reference signal, lacking dynamic adjustment.
Innovation Solution
A method and device for uplink channel transmission that involves determining a first beam for the uplink channel based on an uplink or downlink beam, using a predetermined rule or first indication information configured by the base station, allowing for flexible selection and improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the beam for uplink channel transmission is determined based solely on a reference signal, then the beam selection process is simple, but the flexibility and efficiency of uplink channel transmission are reduced
Solution Approach 1:
The patent implements dynamic beam selection by allowing the terminal to determine the first beam based on multiple sources including uplink beams, downlink beams, and indication information from the base station. The beam can be dynamically adjusted according to different scenarios and network requirements, transforming the static beam selection into a dynamic process that adapts to changing channel conditions
Solution Approach 2:
The patent changes the parameters of beam selection by introducing multiple determination methods with different priorities. The terminal can select beams based on uplink beam parameters, downlink beam parameters, or combination thereof, depending on the indication information received. This parameter-based flexibility allows the system to adapt to different transmission scenarios without increasing overall system complexity
2Reliability
If beam sweeping is performed on reference signals to select the best beam, then the beam quality is improved, but the transmission efficiency is reduced due to the time-consuming process
Solution Approach 1:
The patent applies preliminary action by having the terminal determine the first beam in advance before actual uplink channel transmission. The terminal can pre-select beams based on uplink beam measurements, downlink beam measurements, or indication information from the base station, so that when transmission is needed, the beam is already determined and ready to use, eliminating the need for time-consuming beam sweeping during the transmission process
Solution Approach 2:
The terminal performs self-service by autonomously determining the first beam for uplink channel transmission based on available information (uplink beams, downlink beams, and indication information). This self-determination capability allows the terminal to quickly select appropriate beams without requiring extensive network coordination or time-consuming beam sweeping procedures, thereby improving transmission efficiency while maintaining reliable beam quality
Data Source
AI summary
The embodiments of the present application provide a method for transmitting an uplink channel, an apparatus, a base station, a terminal and a storage medium. The method includes the following steps: determining an uplink beam or a downlink beam; determining a first beam used for uplink channel transmission according to the uplink beam or the downlink beam, and a predetermined rule or first indication information configured for the terminal by the base station; and transmitting an uplink channel by using the first beam. Therefore, according to the embodiments of the present application, the flexibility in selection of beams used by the uplink channel transmission is improved and the efficiency of the uplink channel transmission is increased.