Uplink Grant Beam Direction Multiplexing
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Solution Overview
Problem
In current mobile communication systems, such as 5G new radio (NR) systems, the base station faces challenges in configuring grant-free resources for multiple terminals, leading to a limited number of terminal devices that can perform multiplexing transmission on the same time-frequency resource.
Innovation Solution
The proposed solution involves a data transmission method where a first terminal apparatus receives uplink grant information and determines a beam direction. If the beam direction meets a preset condition, the first terminal apparatus sends uplink data on a time-frequency resource allocated to a second terminal apparatus, thereby increasing the number of terminal devices that can perform multiplexing transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station configures grant-free resources for all terminals scattered in the cell, then all terminals can perform uplink transmission, but the time-frequency resources mapped to the same beam direction have large time intervals, limiting the quantity of terminals that can perform multiplexing transmission on the same time-frequency resource
Solution Approach 1:
The patent allows a time-frequency resource configured for one terminal to be shared by multiple terminals performing multiplexing transmission. The first terminal apparatus can transmit uplink data on the time-frequency resource configured for the second terminal apparatus when the beam direction meets the preset condition, making the resource universal for multiple terminals rather than dedicated to a single terminal.
Solution Approach 2:
The patent introduces beam direction as a new parameter for resource differentiation. By determining whether the beam direction meets a preset condition, the system enables multiple terminals to share the same time-frequency resource in different spatial directions, effectively increasing the quantity of terminals that can perform multiplexing transmission.
2Reliability
If the base station separately allocates time-frequency resources to each terminal, then each terminal has dedicated resources, but the multiplexing capability of the communication system is reduced
Solution Approach 1:
The patent makes the time-frequency resource universal by allowing both the second terminal apparatus (original configured terminal) and the first terminal apparatus (multiplexing terminal) to use the same resource. This multi-functional usage of the resource increases multiplexing capability while maintaining transmission reliability through beam direction differentiation.
Solution Approach 2:
The patent adds a spatial dimension (beam direction) to the resource allocation framework. By differentiating terminals based on beam direction rather than solely relying on time-frequency resource separation, the system achieves higher multiplexing capability without compromising transmission reliability.
3Reliability
If the base station configures grant-free resources considering all terminals in the cell, then comprehensive coverage is achieved, but the device complexity for resource management increases
Solution Approach 1:
The patent reduces device complexity by making configured resources universal for multiple terminals. Instead of configuring separate resources for each terminal, the base station configures resources that can be shared by multiple terminals through multiplexing, simplifying resource management while maintaining comprehensive coverage.
Solution Approach 2:
The patent merges the resource configuration process by allowing multiple terminals to share the same configured resources. The first terminal apparatus uses the time-frequency resource configured for the second terminal apparatus, combining resource usage and reducing the overall complexity of resource configuration and management.
Data Source
AI summary
A method includes: a first terminal apparatus receives first uplink grant information, where a time-frequency resource corresponding to the first uplink grant information is used for uplink transmission of a second terminal apparatus; the first terminal apparatus determines a beam direction based on the first uplink grant information; and when the beam direction meets a preset condition, the first terminal apparatus sends uplink data on the time-frequency resource.