Uplink Waveform Adaptation for Beam Blockage in 5G Networks
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Solution Overview
Problem
Current communication technologies face challenges in maintaining uplink coverage and transmission quality due to signal blockages by obstacles or UE movement at higher frequency bands, particularly as different beams from Transmit and Receive Points (TRPs) experience varying signal energy losses, requiring different uplink transmission waveforms but lacking a solution for adapting waveforms accordingly.
Innovation Solution
A method where a network device transmits an indication message to User Equipment (UE) to switch between uplink transmission waveforms on different beams, such as DFT-S-OFDM and CP-OFDM, based on channel quality and location information, ensuring optimal waveform usage for better coverage and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple beams from different TRPs are used to solve blockage issues, then reliability is improved, but device complexity increases due to the need to handle different uplink transmission waveforms
Solution Approach 1:
The patent changes the waveform parameter based on the beam/TRP being used. The network device configures different uplink transmission waveforms (DFT-S-OFDM or CP-OFDM) for different beams or TRPs, allowing the system to adapt the transmission parameters to match the specific characteristics of each beam path, thereby resolving the contradiction between using multiple beams for reliability and managing waveform complexity
Solution Approach 2:
The patent segments the uplink transmission configuration by associating different waveforms with different beams or TRPs. Instead of using a single waveform for all transmissions, the system divides the transmission configuration into multiple segments, each optimized for its specific beam path, which helps manage the complexity while maintaining reliability across multiple paths
2Manufacturing precision
If different uplink transmission waveforms are used for different beams, then uplink transmission quality is improved, but ease of operation deteriorates due to the need for waveform switching
Solution Approach 1:
The patent implements self-service by enabling the UE to automatically select and switch between different uplink transmission waveforms based on pre-configured associations with beams or TRPs. The network device provides the configuration information, and the UE autonomously performs waveform selection and switching without requiring manual intervention or complex control procedures, thus improving ease of operation while maintaining high transmission quality
Solution Approach 2:
The patent applies preliminary action by having the network device pre-configure multiple uplink transmission waveforms and their associations with different beams or TRPs before actual data transmission. This advance configuration allows the UE to quickly switch between waveforms based on beam blockage detection without requiring real-time complex decision-making, thereby improving both operation ease and transmission quality
Data Source
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AI summary
The embodiments of the present disclosure provide methods for data transmission, user equipment and a network device. The method includes: User Equipment (UE) transmits data to a network device by using a first uplink transmission waveform on a first beam; the UE receives a first indication message transmitted by the network device, the first indication message is used for indicating an uplink transmission waveform corresponding to at least one beam; and the UE transmits data to the network device by using a second uplink transmission waveform on a second beam of the at least one beam, the second uplink transmission waveform is an uplink transmission waveform corresponding to the second beam indicated in the first indication message. Therefore, with the embodiments of the present disclosure, the UE can transmit data on different beams through suitable uplink transmission waveforms, thus better uplink coverage and transmission quality can be obtained, and the function of uplink transmission is provided.