Uplink Transmission via Multi-Resource Spatial Diversity
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Solution Overview
Problem
Current communication systems face challenges in reducing uplink information transmission delay and improving throughput and reliability, particularly in multi-TRP/Panel transmission schemes for 5G communication systems.
Innovation Solution
The proposed solution involves a communication method and apparatus that enable the terminal device to transmit uplink information on multiple resources, including time, frequency, code, and spatial domain resources, using techniques such as FDM, SDM, and CDM, to improve spectral efficiency and reduce transmission delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink information is transmitted on a single resource, then the device complexity is low, but the transmission delay is high and reliability is reduced
Solution Approach 1:
The uplink information transmission is segmented across multiple resources including multiple panels, TRPs, and spatial layers. Each resource carries a portion of the transmission, allowing diversity in transmission paths and improving reliability through spatial and temporal distribution of the signal
Solution Approach 2:
The patent introduces additional transmission dimensions by utilizing multiple panels and TRPs in spatial domain, along with time-domain resources. This multi-dimensional approach transforms a single-resource transmission into a multi-resource transmission system, enhancing reliability through dimensional diversity
2Productivity
If uplink information is transmitted on multiple resources simultaneously, then the throughput is improved, but the device complexity increases
Solution Approach 1:
Multiple transmission resources including different panels, TRPs, and spatial layers are merged to transmit uplink information simultaneously. This combining of multiple transmission paths increases the overall throughput by utilizing aggregate capacity of all resources
Solution Approach 2:
The terminal device is designed with multi-functional capability to handle simultaneous transmissions across multiple resources. Each panel and TRP can independently transmit, providing universal transmission capability that improves throughput while managing complexity through standardized multi-functional architecture
3Loss of time
If traditional single-resource transmission is used, then the device complexity is low, but the transmission delay is high
Solution Approach 1:
The system performs preliminary configuration of multiple panels and TRPs before actual transmission. Resource allocation, spatial parameters, and transmission timing are pre-established, enabling immediate multi-resource transmission when needed and reducing transmission delay without requiring complex real-time decisions
Solution Approach 2:
Multiple transmission resources operate continuously and simultaneously to transmit uplink information. This continuous multi-resource action eliminates idle time between transmissions and reduces overall transmission delay by maintaining constant transmission activity across multiple paths
Data Source
AI summary
Provided is a communication method. The method includes: transmitting, by a terminal device, at least one uplink information on at least one resource; wherein the at least one resource comprises at least one of: a time domain resource, a frequency domain resource, a code domain resource, or a spatial domain resource; and the at least one uplink information comprises at least one of: one or more physical uplink control channels (PUCCHs), one or more physical uplink shared channels (PUSCHs), one or more transmission layers, one or more transmission layers corresponding to the PUSCHs, one or more redundancy versions (RVs) corresponding to the PUSCHs, one or more transport blocks, one or more RVs corresponding to the transport blocks, or one or more reference signals.