Wireless Node Uplink Coordination Across Overlapping Resource Blocks
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Solution Overview
Problem
The challenge in wireless communication systems is the overlap of uplink channels/signals in the time domain, which affects power limitations and peak-to-average power ratio (PAPR), particularly in scenarios involving multi-beam/TRP/panel transmission, leading to inefficiencies and reduced reliability.
Innovation Solution
A method and apparatus for determining time-frequency resource blocks and antenna ports based on information and signaling sets to manage the transmission of signals, allowing for the dynamic adjustment of signal transmission in overlapping blocks to optimize uplink transmission efficiency and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If simultaneous multi-beam/TRP/panel uplink transmission is implemented, then uplink throughput is improved, but power limitation and PAPR issues worsen due to signal overlap
Solution Approach 1:
The patent implements dynamic resource allocation where the network can flexibly configure time-frequency resources for different uplink signals. The gNB dynamically assigns non-overlapping resources to different beams/TRPs/panels based on current channel conditions and traffic requirements, allowing simultaneous transmission while preventing resource conflicts and maintaining power limitations.
Solution Approach 2:
The patent segments the time-frequency resource space into distinct blocks for different uplink signals. By dividing resources into separate, non-overlapping segments for different beams/TRPs/panels, the system enables simultaneous transmission while ensuring each signal operates within its allocated power budget and avoiding PAPR issues from signal superposition.
2Reliability
If time-frequency resource blocks are allocated to multiple signals, then transmission diversity is improved, but resource overlap in time domain increases
Solution Approach 1:
The patent resolves time-domain overlaps by introducing frequency-domain separation. Different uplink signals that would overlap in time are allocated to different frequency resources (resource blocks), effectively moving the resolution from one dimension (time) to another dimension (frequency). This allows simultaneous transmission with full diversity while eliminating harmful time-domain interference.
3Measurement precision
If multiple reference signal resource groups are configured, then antenna port determination is improved, but system complexity increases
Solution Approach 1:
The patent pre-configures multiple reference signal resource groups with predetermined associations to uplink signals and antenna ports. This preliminary configuration allows the UE to quickly determine the appropriate antenna port based on simple indexing without complex real-time calculations, improving measurement precision while keeping device complexity manageable through pre-computed mappings.
Data Source
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AI summary
The present application discloses a method and apparatus used in a node for wireless communication. A first node receives a first information set and first signaling, quits transmitting a first signal in a first time-frequency resource block, and transmits a second signal in a second time-frequency resource block or quits transmitting the second signal in the second time-frequency resource block. The first information set is used for determining the first time-frequency resource block and the second time-frequency resource block; the first signaling is used for determining a third time-frequency resource block; every two of the first time-frequency resource block, the second time-frequency resource block, and the third time-frequency resource block overlap in a time domain; a first reference signal resource group is used for determining a transmitting antenna port of the first signal, and a second reference signal resource group is used for determining a transmitting antenna port of the second signal; whether to quit transmitting the second signal in the second time-frequency resource block depends on the first information set. The method improves the uplink transmission efficiency, and also ensures the reliability of uplink transmission.