Relay Forwarding by Latency Requirement for NR V2X Handover
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Solution Overview
Problem
Existing relay-based communication technologies in LTE D2D systems fail to guarantee service continuity and incur significant latency during handovers, particularly in high-latency scenarios like NR V2X, due to layer-3-based relay forwarding and higher layer interactions.
Innovation Solution
A method for information transmission that involves obtaining and adhering to latency requirements from a second node, allowing a first node to forward information to a third node based on these requirements, using physical, MAC, or higher layer signaling, and adjusting transmission parameters to meet latency constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If layer-3 based relay forwarding is used, then service continuity is maintained during handovers, but latency increases significantly making it unsuitable for latency-sensitive services
Solution Approach 1:
The patent replaces the layer-3 based relay forwarding mechanism with a physical layer forwarding mechanism. Instead of using higher layer processing (layer-3) that requires application layer interaction and causes significant latency, the invention implements forwarding at the physical layer which operates much faster and does not require complex higher layer processing, thus maintaining service continuity while dramatically reducing latency for relayed transmissions.
2Loss of time
If physical layer forwarding is implemented, then latency is reduced for latency-sensitive services, but complexity of the forwarding mechanism increases
Solution Approach 1:
The patent introduces a physical layer forwarding mechanism that acts as an intermediary between the received signal and the transmitting antenna. This intermediary component processes signals at the physical layer without requiring higher layer intervention, enabling low-latency forwarding while maintaining manageable system complexity through a dedicated forwarding path that operates independently of complex higher layer protocols.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE).An embodiment of the present application provides a method for information transmission and device. The method is applied to a first node. The method includes: obtaining, from a second node, a latency requirement of information to be forwarded and the information to be forwarded; and forwarding, to a third node, the information to be forwarded according to the latency requirement of information to be forwarded. In the present application the first node forwards the information to be forwarded to the third node according to the latency requirement of the information to be forwarded, thereby satisfying the needs of services with higher latency requirements.Provided is a method and device for transmitting a PUSCH. The method for transmitting the PUSCH includes: performing a predetermined measurement; determining parameters for transmitting the PUSCH according to a measurement result of the predetermined measurement; and transmitting the PUSCH based on the parameters for transmitting the PUSCH, thus adjustment of the PUSCH transmission parameters and improved performance of the PUSCH can be achieved.