Multi-Panel PT-RS Port Association for Simultaneous Uplink Transmission
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing simultaneous uplink transmission across multiple panels in 5G and beyond systems, particularly in configuring and transmitting phase tracking reference signals effectively to support enhanced mobile broadband, ultra-reliable low-latency communications, and massive machine-type communications.
Innovation Solution
A method and apparatus for wireless communication systems that involve receiving configuration information for uplink transmission, including sounding reference signal resource sets and phase tracking reference signal port associations, to enable simultaneous transmission across multiple panels, with a base station transmitting configuration information and downlink control indicators to user equipment for effective phase tracking reference signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phase tracking reference signals are transmitted using multiple ports for simultaneous multi-panel transmission, then the reliability and accuracy of phase tracking is improved, but the device complexity and signal management difficulty increase
Solution Approach 1:
The patent segments the phase tracking reference signal transmission by associating different PT-RS ports with different SRS resource sets (first SRS resource set with first PT-RS port, second SRS resource set with second PT-RS port). This segmentation allows independent management of phase tracking for each panel while maintaining overall system reliability.
Solution Approach 2:
The patent introduces a new dimension of port association by linking PT-RS ports to SRS resource sets through DCI signaling. This dimensional extension enables the system to manage multiple phase tracking signals simultaneously across different panels without increasing management complexity, as the association is established through standardized signaling mechanisms.
2Adaptability or versatility
If configuration information for multiple SRS resource sets and PT-RS port associations is transmitted, then the adaptability and precision of multi-panel transmission is improved, but the loss of information and signaling overhead increase
Solution Approach 1:
The patent uses universal DCI signaling mechanisms that already exist in 5G systems to convey PT-RS port association information. By leveraging existing signaling frameworks rather than introducing dedicated new signaling protocols, the system achieves multi-panel transmission adaptability while minimizing additional signaling overhead.
Solution Approach 2:
The patent reuses existing SRS resource set configuration structures and associates them with PT-RS ports through standardized field mappings. This copying approach allows the system to extend multi-panel functionality using proven configuration patterns, reducing the need for new information elements and minimizing signaling overhead.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a UE in a wireless communication system is provided, which includes receiving, from a BS, configuration information associated with a UL, the configuration information including SRS resource set information including a first SRS resource set and a second SRS resource set, information indicating that at most two PT-RS ports are used for the UL, and information for a configuration of simultaneous transmission across multi-panel (STxMP); receiving, from the BS, DCI including association information between a PT-RS port and a DMRS port; and in case STxMP is configured, transmitting, based on the DCI, the PT-RS using a first PT-RS port and a second PT-RS port, according to the received configuration of the STxMP. The first PT-RS port is associated with at least one first DMRS port associated with the first SRS resource set, and the second PT-RS port is associated with at least one second DMRS port associated with the second SRS resource set.