Single-Carrier Multi-Band Scheduling for mmWave User Multiplexing
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Solution Overview
Problem
In millimeter-wave bands of 6 GHz or higher, high power signal transmission is needed to overcome high path loss and signal attenuation between a base station and a terminal, making multi-carrier transmission difficult, and existing technologies struggle with user multiplexing using a single carrier.
Innovation Solution
A method and apparatus for a base station to support multiple terminals using a single carrier by allocating different frequency bands and configuring non-overlapping time and frequency resources, employing DFT pre-processing and offsetting to ensure non-interfering signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-carrier transmission is used to support multiple terminals, then user multiplexing capability is improved, but peak-to-average power ratio increases making high power transmission difficult in mmWave band
Solution Approach 1:
The patent segments the frequency band into multiple sub-bands and assigns different sub-bands to different terminals within a single carrier framework. This allows multiple terminals to be multiplexed while maintaining a single carrier structure, thereby supporting user multiplexing capability without significantly increasing the peak-to-average power ratio compared to multi-carrier transmission.
2Power
If single carrier transmission is used to reduce peak-to-average power ratio, then power transmission efficiency is improved, but user multiplexing capability deteriorates
Solution Approach 1:
The patent introduces frequency sub-band dimensioning within the single carrier transmission framework. By dividing the frequency band into multiple sub-bands and assigning them to different terminals, the system achieves user multiplexing capability in the frequency dimension while maintaining the single carrier structure, thus preserving power transmission efficiency.
3Length of stationary object
If high power transmission is used to overcome path loss in mmWave band, then communication distance is improved, but signal attenuation and interference increase
Solution Approach 1:
The patent applies local quality by assigning different frequency sub-bands to different terminals, allowing each terminal to receive signals in its preferred frequency band with optimized characteristics. This frequency-selective approach enables effective communication over extended distances by matching terminal preferences while reducing inter-terminal interference through non-overlapping resource allocation.
Data Source
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AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method, performed by a base station, includes identifying configuration information for single carrier signal transmission, transmitting the single carrier signal transmission configuration information to a terminal, transmitting control information scheduling data transmission, and transmitting data to the terminal using a single carrier according to the single carrier signal transmission configuration information and the control information. The single carrier signal transmission configuration information comprises at least one of offset or comb information indicating a resource to which the terminal can be scheduled, frequency resource information of a bandwidth part, or sub-carrier spacing information.