Uplink Precoding Matrix Selection for Multi-Panel Full-Power Transmission
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Solution Overview
Problem
The existing wireless communication systems face challenges in supporting high data traffic, increased transmission rates, and low latency while efficiently utilizing resources, particularly in uplink transmission and reception, especially for terminals with multiple antenna panels.
Innovation Solution
A method and device for indicating a precoding matrix indicator (PMI) and applying a full power Tx mode for terminals with multiple antenna panels, utilizing multiple sounding reference signal (SRS) resource sets to optimize uplink transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple antenna panels are used for uplink transmission, then transmission rate and data capacity are improved, but device complexity and port-to-panel mapping complexity increase
Solution Approach 1:
The patent divides the antenna system into multiple independent panels, where each panel can be configured with its own precoding matrix from a restricted set. This segmentation allows the system to achieve high transmission rates through parallel panel operation while managing complexity by treating each panel as an independent unit with simplified configuration rules.
Solution Approach 2:
The patent applies different precoding matrix restrictions to different panels based on their specific characteristics and capabilities. Each panel can use a tailored precoding matrix from its designated set, optimizing local performance while maintaining overall system manageability through localized rather than centralized complex configuration.
2Ease of operation
If precoding matrix sets are restricted per panel, then port-to-panel mapping is simplified, but performance degradation may occur
Solution Approach 1:
The patent changes the parameters of precoding matrices by creating restricted sets with specific properties tailored to each panel's capabilities. This parameter customization simplifies the mapping process while maintaining optimal performance by ensuring each panel uses precoding matrices appropriate to its characteristics rather than forcing a one-size-fits-all approach.
Solution Approach 2:
The patent performs preliminary configuration of precoding matrix sets for each panel before actual transmission operations. By pre-defining appropriate precoding matrices and their restrictions, the system simplifies real-time port-to-panel mapping while ensuring performance requirements are met through careful advance selection of suitable precoding options for each panel.
Data Source
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AI summary
A method and a device for performing uplink transmission and reception in a wireless communication system are disclosed. A method performed by a terminal in a wireless communication system according to an embodiment of the present disclosure may comprise the steps of: reporting, to a base station, capability information associated with full power transmission; receiving, from the base station, control information including information on at least one precoding matrix for a data channel; and transmitting, to the base station, the data channel on the basis of the at least one precoding matrix. Here, the capability information may include information about a first precoding matrix set and information about a second precoding matrix set for full power transmission of the data channel. At this time, the first precoding matrix set may be associated with a first uplink transmission scheme based on one sounding reference signal (SRS) resource set, and the second precoding matrix set may be associated with a second uplink transmission scheme based on at least two SRS resource sets.