Multi-Carrier Communication Capability Reporting for Millimeter-Wave Terminals
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Solution Overview
Problem
5G NR terminals operating in millimeter-wave frequency bands face challenges with multi-carrier configuration due to limitations in antenna array beamforming capabilities and large differences in power spectral densities between carriers, leading to interference and failure in simultaneous operation.
Innovation Solution
The terminal device reports multi-carrier communication capability information, including independent beamforming capabilities and maximum power spectral density differences, to the network device, allowing for optimized multi-carrier configuration and adjustment to reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-carrier configuration is performed in millimeter-wave frequency band, then communication capacity is improved, but carrier operation reliability deteriorates due to beamforming limitations and power spectral density differences
Solution Approach 1:
The terminal device performs capability indication in advance before multi-carrier configuration, informing the network device of its beamforming capabilities and power spectral density tolerance. This preliminary action allows the network device to plan and configure carriers appropriately from the outset, avoiding configuration failures that would occur without this advance information.
Solution Approach 2:
The network device adjusts carrier configuration parameters based on the terminal's indicated capabilities, specifically modifying power spectral density allocations and carrier frequency selections. By changing these parameters to match terminal capabilities, the system achieves reliable multi-carrier operation in millimeter-wave bands.
2Device complexity
If terminal uses omnidirectional radiating antennas for multi-carrier communication, then device complexity is reduced, but communication reliability deteriorates in millimeter-wave frequency band
Solution Approach 1:
The terminal device indicates its beamforming capabilities to the network device before carrier configuration. This preliminary capability indication allows the network to understand whether the terminal uses omnidirectional antennas or beamforming-capable antennas, enabling appropriate carrier configuration that matches the actual hardware capabilities.
3Adaptability or versatility
If base station configures multiple carriers dynamically, then system adaptability is improved, but configuration complexity increases
Solution Approach 1:
The terminal device performs capability indication in advance, providing the network device with information about its beamforming capabilities and power spectral density tolerance. This preliminary information allows the network device to plan carrier configurations that are both adaptive to terminal capabilities and avoid overly complex configurations that the terminal cannot handle.
Solution Approach 2:
The capability indication mechanism provides feedback from the terminal to the network about its operational limits and capabilities. This feedback loop enables the network to configure carriers adaptively while staying within terminal capabilities, avoiding configuration failures.
Data Source
AI summary
A multi-carrier communication method, a terminal device, and a network device. The terminal device comprises a processor and a memory. The memory is configured to store a computer program. The processor is configured to call and run the computer program stored in the memory, and implement sending multi-carrier communication capability information to a network device, the multi-carrier communication capability information is configured to indicate the network device to perform a multi-carrier communication configuration for the terminal device.