Relay Node Transport Block Forwarding Across Air Interfaces
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communications systems face challenges in forwarding transport blocks across different air interfaces, as the target node may be unable to decode transport blocks directly forwarded from a relay node due to format differences between the air interfaces, leading to unsuccessful decoding and data loss.
Innovation Solution
The relay node receives a transport block over a first air interface and forwards it to a target node via a second air interface, accompanied by an indication of the original format, allowing the target node to perform appropriate decoding and processing, ensuring successful data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the relay node directly forwards the transport block from the first air interface to the second air interface without format indication, then the forwarding process is simple and fast, but the target node cannot decode the transport block due to format differences between air interfaces
Solution Approach 1:
The patent introduces a format indication message as an intermediary element that bridges the gap between the first and second air interfaces. This indication message carries metadata about the transport block format (such as modulation scheme, coding rate, resource allocation) from the first air interface, enabling the target node to correctly interpret and decode the forwarded transport block on the second air interface without requiring complex format conversion or re-encoding.
2Reliability
If the relay node converts the transport block format from the first air interface to the second air interface format, then the target node can decode successfully, but the processing complexity and time increase
Solution Approach 1:
The patent extracts only the essential format metadata from the first air interface configuration and transports it separately via the format indication message, rather than performing complete format conversion of the transport block. This extraction approach allows the target node to obtain the necessary decoding information without the relay node needing to execute complex format transformation operations, thereby reducing processing complexity while ensuring successful decoding.
3Reliability
If the relay node converts the transport block format to match the second air interface, then decoding succeeds, but the processing time and computational resources increase
Solution Approach 1:
The patent performs preliminary action by extracting and transmitting the format indication information before the actual transport block forwarding. The target node receives the format indication message in advance, which prepares it with the necessary decoding parameters before the transport block arrives. This preliminary provision of format information eliminates the need for time-consuming format conversion operations during the forwarding process, reducing overall processing time while ensuring successful decoding.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A relay node may receive, from a source node, control signaling configuring the relay node to receive a transport block via a first air interface and to forward the transport block to a target node via a second air interface that is different than the first air interface. In some cases, each of the first air interface and the second air interface may support a same size transport block. The relay node may receive, from the source node via the first air interface, a first message including the transport block in a format of the first air interface based on the control signaling. The relay node may transmit, via the second air interface to the target node, a second message including the transport block and an indication that the transport block is in the format of the first air interface.