Sidelink Coordination Information Multiplexing
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Solution Overview
Problem
Current wireless communication systems, particularly in V2V and V2X technologies, face challenges in efficiently coordinating sidelink resource selection among multiple devices, leading to potential resource collisions and outdated coordination information, which affects data transmission reliability and efficiency.
Innovation Solution
The solution involves encoding coordination information and data into separate transport blocks (TBs) and transmitting them on a shared channel, allowing for the updating of coordination information without altering the data TBs, thereby maintaining data integrity and efficiency in sidelink resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If coordination information and data are transmitted together in the same transport block, then resource utilization is improved, but coordination information becomes outdated when data retransmissions occur
Solution Approach 1:
The patent segments the transport block into separate data portions and coordination information portions. This allows the coordination information to be updated independently in new transmissions while data portions can be retransmitted without carrying outdated coordination information. The segmentation enables selective updating of coordination information without affecting data retransmission efficiency.
Solution Approach 2:
The patent extracts coordination information from the data transport block and transmits it separately in dedicated coordination information portions. This extraction allows the coordination information to be updated independently and ensures that retransmitted data portions do not carry stale coordination information, resolving the contradiction between resource utilization and information freshness.
2Measurement precision
If coordination information is updated frequently to maintain freshness, then coordination accuracy is improved, but overhead increases and data transmission efficiency decreases
Solution Approach 1:
The patent applies local quality by providing coordination information only where needed - in new transmissions and when coordination updates are necessary - rather than in every transmission. The separate coordination information portions are transmitted selectively, reducing overall overhead while maintaining accuracy where required. Data retransmissions can proceed without coordination information updates when not needed.
Solution Approach 2:
The patent uses partial action by updating coordination information only in necessary cases (new transmissions, resource changes) rather than in all transmissions. This selective approach maintains coordination accuracy when needed while avoiding unnecessary overhead in cases where coordination information remains valid, thus balancing accuracy with transmission efficiency.
3Reliability
If separate transport blocks are used for coordination information and data, then coordination information freshness is maintained, but resource utilization efficiency decreases
Solution Approach 1:
The patent merges coordination information portions and data portions into the same physical transmission channel (PSSCH), allowing both to be transmitted together when resources are available. This combining approach maintains coordination information freshness through separate coding while improving resource utilization by sharing the physical transmission resources, thus resolving the contradiction between reliability and productivity.
Data Source
AI summary
Aspects presented herein may enable a transmitting device to encode and transmit coordination information and data in separate transport blocks, such that the transmitting device may update the coordination information without altering the transport block carrying the data. In one aspect, an apparatus encodes coordination information for sidelink resources in a first transport block. The apparatus encodes data in a second transport block. The apparatus transmits a first transmission on a PSSCH, the first transmission including the first transport block comprising coordination information and the second transport block.