Multi-Beam Uplink Data Transmission Against Blockage and Misalignment
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Solution Overview
Problem
Uplink data transmission in communication systems is prone to failure due to narrow beam directions from large numbers of antennas, often blocked by objects or failing to align with network side device reception, leading to poor performance.
Innovation Solution
A terminal receives N uplink sounding pilot indices from a network side device and transmits uplink data in N corresponding beam directions, improving transmission performance by using various transmission modes such as spatial multiplexing, time-division, and beam-level diversity, as instructed by the network side device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the terminal uses a single narrow beam direction for uplink data transmission, then the transmission direction is focused and antenna gain is improved, but the transmission reliability deteriorates due to blockage or misalignment
Solution Approach 1:
The patent segments the uplink transmission into multiple independent beam directions. Instead of relying on a single narrow beam, the terminal transmits uplink data through multiple beams (first beam, second beam, etc.) simultaneously or alternatively. This segmentation allows the system to maintain focused energy in each beam while providing redundancy across multiple paths, thus resolving the contradiction between antenna gain and transmission reliability.
Solution Approach 2:
The patent prepares multiple beam directions in advance before transmission is needed. The network device configures multiple uplink sounding pilot resources corresponding to different beam directions, and the terminal pre-establishes multiple uplink data transmission beams. This beforehand preparation ensures that if one beam is blocked or fails, alternative beams are already ready to maintain transmission reliability without sacrificing the focused gain of individual beams.
2Reliability
If the terminal transmits uplink data in multiple beam directions, then the transmission reliability is improved, but the device complexity increases
Solution Approach 1:
The patent implements self-service mechanisms where the terminal autonomously selects and manages multiple beam directions based on pre-configured sounding pilot resources. The terminal independently determines which beams to use for uplink data transmission without requiring continuous network control signaling for each beam selection. This self-service approach reduces the operational complexity while maintaining multiple beam transmission for improved reliability.
Solution Approach 2:
The network device performs preliminary configuration by allocating multiple uplink sounding pilot resources corresponding to different beam directions before the actual data transmission. This preliminary action establishes a ready-to-use beam configuration that simplifies the terminal's subsequent transmission operations. The terminal can directly utilize these pre-configured beams without complex real-time beam management, thus reducing device complexity while maintaining transmission reliability.
Data Source
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AI summary
An uplink data transmission method, a terminal, and a network side device are provided. The method includes: receiving, by a terminal, N uplink sounding pilot indices transmitted by a network side device, wherein N is a positive integer larger than 0; and transmitting, by the terminal, uplink data to the network side device in N uplink beam directions corresponding to the N uplink sounding pilot indices.