V2X Resource Mapping Comb Arrangement Interference Reduction
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Solution Overview
Problem
Current V2X communication systems face performance losses due to the lack of timing adjustment mechanisms, leading to interference between sidelink and downlink transmissions, and inefficient use of symbols for AGC processing, resulting in decoding performance issues.
Innovation Solution
The proposed solution involves performing resource mapping in a comb arrangement manner on the frequency domain of a last time domain unit, transforming it to the time domain, and not sending set duration information at the end of the last time domain unit, which is determined by the target mapping mode used during resource mapping, thereby reducing interference and improving processing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resource mapping is performed including set duration information at the end of the last time domain unit, then complete information is transmitted, but interference between sidelink and downlink transmissions occurs and processing efficiency decreases
Solution Approach 1:
The patent extracts and removes the set duration information from the last time domain unit before transmission. By separating this specific information element from the overall data stream and excluding it from the transmitted resource mapping, the patent eliminates the source of interference while preserving the essential communication function through the remaining information.
Solution Approach 2:
The patent applies preliminary anti-action by proactively removing the set duration information before transmission occurs. This preemptive removal prevents the potential interference from occurring in the first place, rather than attempting to mitigate it after the fact. The system anticipates the harmful effect and counteracts it through advance information exclusion.
2Quantity of substance
If set duration information is transmitted at the end of the last time domain unit, then complete data is sent, but information processing efficiency decreases due to unnecessary processing
Solution Approach 1:
The patent extracts the unnecessary set duration information from the transmitted data stream. By identifying and removing this redundant information element before transmission, the patent reduces the total amount of data that requires processing at the receiver end, thereby improving information processing efficiency without compromising the essential communication content.
Solution Approach 2:
The patent applies the discarding principle by eliminating the set duration information that does not contribute to effective communication. This discarded information would otherwise require processing resources at the receiver, so its removal directly improves processing efficiency while the essential information is preserved and transmitted.
3Ease of operation
If symbols are used for AGC processing, then automatic gain control is achieved, but decoding performance deteriorates due to inefficient symbol usage
Solution Approach 1:
The patent extracts and removes the set duration information that would otherwise be used for AGC processing. By eliminating this information from the transmitted signal, the patent prevents its degradation from affecting decoding performance, while AGC can still be performed using other dedicated reference signals or pilot symbols that do not suffer from the same interference issues.
Data Source
AI summary
An information sending method is disclosed comprising: performing resource mapping in a comb arrangement manner on a frequency domain of a last time domain unit, wherein the comb arrangement manner includes at least one mapping mode; transforming the frequency domain to a time domain; and after transforming to the time domain, not sending set duration information which is at the end of the last time domain unit, wherein the set duration is determined by a target mapping modes used when the resource mapping is performed.