Uplink Precoding for GB-GF Resource Collision Control
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Solution Overview
Problem
Existing communication systems face challenges in managing resource collisions and interference between grant-based (GB) and grant-free (GF) transmission mechanisms, leading to inefficient resource utilization and potential loss of transmission resources.
Innovation Solution
A communication method that determines precoding information based on grant-free configuration to resolve resource collisions, allowing flexible precoding for overlapping and non-overlapping areas, and uses hybrid precoding to minimize interference and optimize resource use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If grant-based and grant-free transmission mechanisms share the same physical layer channel resources, then resource utilization is improved, but resource collision and interference between user equipments occur
Solution Approach 1:
The patent applies local quality by determining different precoding information for different resource areas. Specifically, when a first resource set (grant-based) overlaps with a second resource set (grant-free), the system determines first precoding information for the overlapping area and second precoding information for the non-overlapping area. This localized differentiation allows the system to maintain high resource utilization while minimizing interference in specific collision zones.
2Object-affected harmful factors
If different precoding information is used for overlapping and non-overlapping areas, then interference control is improved, but system complexity increases
Solution Approach 1:
The patent segments the resource set into overlapping and non-overlapping areas based on the overlap relationship between grant-based and grant-free resource sets. By dividing the resource space and applying different precoding strategies to different segments, the system achieves effective interference control without requiring complete redesign of the entire transmission mechanism.
3Loss of time
If grant-free transmission is allowed without scheduling, then transmission latency is reduced, but resource collision with grant-based transmission increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the second resource set for grant-free transmission before actual data transmission occurs. The network device determines the overlap relationship in advance and prepares the appropriate precoding information. This allows grant-free transmission to proceed with low latency while the system has already prepared interference mitigation strategies for potential collisions.
Data Source
AI summary
Disclosed embodiments provide a communication method and apparatus, a computer-readable storage medium, and a computer program product. In the method, when a first communication apparatus determines that a first resource set used by a grant-based first terminal device for uplink transmission overlaps with a second resource set used by a grant-free second terminal device for uplink transmission, the first communication apparatus determines, based on grant-free configuration information of the second terminal device, first precoding information to be used by the first terminal device to perform uplink transmission, and outputs the first precoding information. In this way, according to embodiments of this disclosure, a problem of a resource collision between different transmission mechanisms can be resolved, interference between user equipments in the different transmission mechanisms can be controlled, invalid sacrifice of transmission resources of the user equipments in the different transmission mechanisms can be avoided, and resource utilization can be improved.