Terminal Uplink Scheduling Across Frequency-Divided Beams
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Solution Overview
Problem
In future radio communication systems, the appropriate control of uplink (UL) transmission using multiple beams or panels has not been sufficiently addressed, leading to potential degradation in system performance such as reduced throughput.
Innovation Solution
A terminal and base station are designed to receive downlink control information for scheduling UL transmissions using frequency-division multiplexed resources across multiple beams or panels, allowing for appropriate simultaneous UL transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UL transmission using multiple beams/panels is implemented, then system capacity and throughput are improved, but control complexity and resource allocation difficulty increase
Solution Approach 1:
The patent segments the UL transmission into separate beam/panel units, each with its own frequency resource allocation. The terminal transmits on multiple beams/panels simultaneously with frequency-division multiplexing, allowing independent control and optimization of each beam's resources while maintaining overall system throughput.
Solution Approach 2:
The patent introduces frequency-domain separation as an additional dimension for controlling multiple beams/panels. Instead of time-division or spatial separation alone, the system uses frequency-division multiplexing to allocate resources across different beams, adding a new degree of freedom for resource management and reducing control complexity.
2Productivity
If frequency-division multiplexing is used for multiple beams, then resource overlap is prevented and throughput is enhanced, but scheduling complexity increases
Solution Approach 1:
The base station provides downlink control information that includes frequency resource allocation for each beam/panel. The terminal uses this feedback information to determine the appropriate frequency resources for simultaneous UL transmissions, enabling coordinated scheduling without complex autonomous decision-making at the terminal.
Solution Approach 2:
The downlink control information serves multiple functions: it schedules UL transmissions, allocates frequency resources, and provides beam/panel configuration data. This multi-functional approach reduces the need for separate signaling mechanisms and simplifies the overall scheduling process.
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes a receiving section that receives one downlink control information used for scheduling of transmission of one or more uplink shared channels using a first frequency resource and a second frequency resource, the first resource corresponding to a first beam or panel, and the second frequency resource corresponding to a second beam or panel and being frequency-division multiplexed with the first frequency domain resource, and a control section that determines the first frequency resource and the second frequency resource, based on the downlink control information.