Sidelink Relay Node Re-encoding Transport Block Portions
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR technology, face challenges in improving sidelink relay operations, which are crucial for device-to-device communications such as vehicle-to-anything (V2X) communications. Existing technologies lack efficient methods for re-encoding and relaying transport block portions across different encoding configurations, leading to suboptimal performance in terms of diversity and throughput.
Innovation Solution
The proposed solution involves a method where a relay node attempts to decode transport block portions received on a first link with a specific encoding configuration. Successfully decoded portions are then re-encoded using a different or the same encoding configuration and transmitted on a second link. This approach includes modifying resource allocation and blanking unsuccessfully decoded portions to reduce transmission resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the relay node re-encodes transport block portions with different encoding configurations, then the diversity and throughput of sidelink relay communications are enhanced, but the device complexity increases
Solution Approach 1:
The transport block is divided into multiple transport block portions (TBPs), each of which can be independently decoded and re-encoded. This segmentation allows the relay node to process only the successfully decoded portions with different encoding configurations while leaving unsuccessfully decoded portions unchanged, thereby enhancing throughput without requiring complete re-encoding of the entire block.
Solution Approach 2:
Different encoding configurations are applied selectively to different transport block portions based on their decoding success. Successfully decoded TBPs receive re-encoding with potentially different configurations to optimize for diversity and throughput, while unsuccessfully decoded TBPs are transmitted as-is or with standard encoding, avoiding unnecessary complexity where it doesn't add value.
2Productivity
If the relay node re-encodes transport block portions with different encoding configurations, then the diversity and throughput are enhanced, but the processing time increases
Solution Approach 1:
By segmenting the transport block into smaller portions that can be processed independently, the relay node can parallelize the re-encoding operations for successfully decoded TBPs. This reduces the total processing time compared to re-encoding the entire block, while still benefiting from the throughput enhancement provided by different encoding configurations.
Solution Approach 2:
The relay node applies re-encoding with different configurations only to the subset of transport block portions that were successfully decoded, rather than processing the entire block. This partial action approach reduces processing time while maintaining the throughput benefit, as unsuccessfully decoded portions are handled with minimal processing overhead.
3Productivity
If the relay node blanks unsuccessfully decoded portions to reduce transmission resources, then the transmission efficiency improves, but the reliability may deteriorate
Solution Approach 1:
The relay node extracts and removes unsuccessfully decoded transport block portions from the transmission, replacing them with blank resources. This extraction approach improves transmission efficiency by reducing the overhead of transmitting corrupted data, while the reliability is maintained through the use of acknowledgment mechanisms and selective retransmission of only the necessary portions.
Solution Approach 2:
Unsuccessfully decoded transport block portions are discarded from the current transmission cycle and marked as blank resources. The system recovers reliability by implementing feedback mechanisms that allow the transmitter to retransmit only the affected portions, rather than attempting to transmit the entire block again, thereby improving overall transmission efficiency while maintaining reliability.
Data Source
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AI summary
This disclosure relates to a relay node, and a method of wireless communications by the relay node, including attempting to decode a plurality of first transport block portions of a transport block, wherein the plurality of first transport block portions are received on a first link according to a first encoding configuration. The aspects further include encoding successfully decoded ones of the plurality of first transport block portions according to a second encoding configuration to define one or more second transport block portions corresponding to the transport block, wherein the second encoding configuration is different from the first encoding configuration. And, the aspects further include transmitting the one or more second transport block portions on a second link and according to the second encoding configuration. Other aspects of the relay node and a receiver node are also disclosed.