Simultaneous Multi-Panel Multi-TRP Transmission with Single-DCI Scheduling
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Solution Overview
Problem
The complexity of wireless communications in 5G networks is increased by the use of multiple transmit-receive points (TRPs) and multiple panels, leading to inefficiencies in data transmission and reception.
Innovation Solution
Implementing simultaneous multi-panel and multi-TRP transmission schemes, including single-DCI and multi-DCI based configurations, to enhance data transmission reliability and capacity by utilizing spatial, frequency, and time domain multiplexing techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple TRPs and multiple panels are used to enhance transmission capacity and reliability, then the data transmission reliability and capacity are improved, but the system complexity increases
Solution Approach 1:
The patent segments the transmission system into multiple independent TRPs and panels, each capable of transmitting data simultaneously. This segmentation allows the system to achieve higher reliability through diversity while managing complexity by treating each segment independently in terms of scheduling and resource allocation.
Solution Approach 2:
The patent merges multiple TRPs and panels into a unified transmission system that operates under a single DCI (Downlink Control Information) structure. This merging enables simultaneous multi-panel and multi-TRP transmissions while consolidating control mechanisms to avoid excessive complexity.
2Productivity
If multiple TRPs and multiple panels are deployed to increase transmission capacity, then the data transmission capacity is improved, but the configuration and management complexity increases
Solution Approach 1:
The patent implements a universal DCI structure that can schedule multiple TRPs and panels through a single control message. This multi-functional DCI design enables the system to manage multiple transmission paths without requiring separate configuration for each TRP or panel, thereby reducing configuration complexity while maintaining high capacity.
Solution Approach 2:
The patent introduces a new dimension to the DCI structure by adding TRP indication fields and panel configuration parameters that allow a single control message to address multiple transmission points. This dimensional expansion of the control structure enables efficient management of multiple TRPs and panels without proportionally increasing configuration complexity.
3Reliability
If simultaneous multi-panel and multi-TRP transmissions are implemented, then the reliability is improved through diversity, but the channel state information handling complexity increases
Solution Approach 1:
The patent segments the channel state information (CSI) handling into separate processes for each TRP and panel, with each segment independently reporting and processing its own channel conditions. This segmentation simplifies the overall CSI handling by avoiding the need to process all TRP-panel combinations simultaneously while maintaining diversity-based reliability.
Solution Approach 2:
The patent implements feedback mechanisms where each TRP and panel reports its channel state information to the scheduler, which then uses this feedback to make informed scheduling decisions. This feedback loop enables the system to manage complexity by reacting to actual channel conditions rather than pre-configuring all possibilities.
Data Source
AI summary
An apparatus and system of supporting simultaneous transmission over multi-panel (STxMP) uplink (UL) transmissions are described. At least one downlink control information (DCI) is used to schedule STxMP UL transmission to multiple transmit-receive points (TRPs). The DCI indicates whether time domain (TD) repetition is to be applied, in addition to time domain and/or frequency domain resource location for different multiplexing schemes. Aperiodic-channel state information (A-CSI) or semi-persistent CSI (SP-CSI) multiplexing is multiplexed within one or more of the repetitions. One or more sounding reference signal (SRS) resource indication (SRI) fields in the DCI indicate the SRS resources to use for the transmission. Mechanisms of physical uplink control channel (PUCCH) resource configuration are described for STxMP operation.