Joint Scheduling of Sidelink and Uplink Resources
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Solution Overview
Problem
Current wireless communication systems face challenges in reducing uplink cooperative transmission delay and improving efficiency, particularly due to independently scheduled sidelink and uplink resources that do not adapt well to user cooperative transmission.
Innovation Solution
The proposed solution involves a method where a network device sends scheduling information to terminal devices, indicating both sidelink and uplink transmission parameters, allowing for coordinated resource allocation and reducing the need for repeated resource scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sidelink and uplink resources are independently scheduled, then resource allocation flexibility is improved, but uplink cooperative transmission delay increases
Solution Approach 1:
The patent combines sidelink resource allocation and uplink resource allocation into a single joint scheduling process. The network device simultaneously determines both sidelink resources (for terminal-to-terminal communication) and uplink resources (for terminal-to-network communication) in one scheduling decision, ensuring proper temporal alignment and reducing the need for repeated scheduling operations, thereby reducing transmission delay while maintaining allocation flexibility.
2Ease of operation
If sidelink and uplink resources are independently scheduled, then scheduling autonomy is improved, but scheduling efficiency deteriorates
Solution Approach 1:
The patent merges the scheduling of sidelink resources and uplink resources into a unified scheduling framework. The network device performs joint scheduling that simultaneously considers both resource types, eliminating the need for separate scheduling procedures and reducing the number of scheduling rounds required, thereby improving scheduling efficiency while maintaining appropriate autonomy for each resource type.
3Adaptability or versatility
If multiple scheduling operations are performed, then resource adaptation is improved, but transmission delay increases
Solution Approach 1:
The patent implements preliminary joint scheduling where the network device determines both sidelink and uplink resource allocations in advance through a single scheduling operation. This preliminary action ensures that resources are pre-coordinated with proper temporal relationships established before transmission begins, eliminating the need for subsequent scheduling adjustments and reducing overall transmission delay while maintaining resource adaptability.
Data Source
AI summary
This application provides example uplink transmission methods and communication apparatuses. One example method includes sending first scheduling information by a network device to a first terminal and a second terminal, where the first scheduling information includes indication information of a sidelink transmission parameter and indication information of a first uplink transmission parameter, the sidelink transmission parameter is used by the first terminal to send first data to the second terminal, and the first uplink transmission parameter is used by the second terminal to send the first data to the network device. The first data is received by the network device from the second terminal.