Uplink Resource Selection Signaling for Low-Delay 5G Transmission
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Solution Overview
Problem
Existing communication systems, particularly in 5G, face challenges in achieving low-delay data transmission for extended reality (XR) applications due to complex interaction processes involving SR and BSR reporting, leading to ineffective data transmission solutions.
Innovation Solution
A method where a terminal device selects a first resource from M candidate resources for uplink transmission, indicating its index to the network device using indication information, thereby reducing transmission delay and network device complexity by avoiding blind detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the terminal device uses traditional SR and BSR reporting process for uplink data transmission, then the network device can allocate resources properly, but the transmission delay increases and cannot meet low-delay requirements
Solution Approach 1:
The network device pre-configures multiple candidate resources (first resource, second resource, third resource, etc.) for uplink data transmission before the terminal device needs to send data. These resources are prepared in advance with different characteristics (e.g., different time slots, frequency resources, or resource blocks), so when data arrives, the terminal can immediately select from the pre-prepared options without waiting for traditional scheduling requests and grants, thereby reducing transmission delay.
2Reliability
If the network device performs blind detection on M candidate resources to determine which resource carries uplink information, then it can identify the correct resource, but the communication complexity increases
Solution Approach 1:
The patent extracts the resource selection decision-making function from the network device and transfers it to the terminal device. The terminal device autonomously selects which candidate resource to use for uplink transmission based on its data characteristics and buffer status, then informs the network device of this selection. This removes the need for the network device to perform complex blind detection across multiple candidate resources, significantly reducing its detection complexity while maintaining reliable resource identification.
Solution Approach 2:
The terminal device provides feedback to the network device by indicating which candidate resource it has selected for uplink transmission. This feedback mechanism allows the network device to know in advance which resource will carry the uplink data, eliminating the need for blind detection. The feedback can be explicit (directly indicating the selected resource) or implicit (through patterns that reveal the selection), thereby reducing the network device's detection complexity while ensuring reliable resource identification.
3Productivity
If the terminal device configures resources before each uplink transmission, then resource allocation can be optimized, but the transmission delay increases
Solution Approach 1:
The network device performs preliminary configuration of multiple candidate resources in advance, preparing them before the terminal device needs to transmit uplink data. These pre-configured resources include various options with different characteristics (time, frequency, resource blocks). When data arrives at the terminal, it can immediately select from these ready-made options without going through the traditional resource configuration process, thereby maintaining resource allocation efficiency while significantly reducing transmission delay.
Solution Approach 2:
The patent introduces dynamic resource selection at the terminal device side, where the terminal can flexibly choose from multiple pre-configured candidate resources based on real-time conditions such as data size, urgency, and channel conditions. This dynamic selection capability allows the system to adapt to different transmission scenarios without requiring reconfiguration, maintaining allocation efficiency while enabling low-delay transmission by selecting the most appropriate pre-prepared resource.
Data Source
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AI summary
This application provides a communication method, apparatus, and device, and a storage medium. The method includes: A terminal device receives first configuration information, where the first configuration information is used to configure M candidate resources, and M is an integer greater than 1. The terminal device sends indication information, where the indication information carries an index of a first resource in the M candidate resources, and the first resource is used to send uplink information. The terminal device performs uplink transmission by using the first resource in the M candidate resources, so that a transmission delay is reduced. Further, the terminal device indicates the index of the first resource to a network device by using the indication information, so that the network device does not perform blind detection on the M candidate resources, thereby reducing communication complexity of the network device.