Sidelink Transmission ID Screening for Selective PSSCH Demodulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In LTE mobile communication systems, sidelink transmission results in high processing energy consumption and waste of processing capacity due to terminals demodulating all received data without sender or receiver indication, leading to unnecessary processing of unicast, multicast, and broadcast data.
Innovation Solution
A sidelink information transmission method where terminals determine, based on a sidelink transmission identifier indicated by SCI, whether to receive or demodulate a physical sidelink shared channel PSSCH, using explicit or implicit methods to identify sender or receiver identifiers, thereby reducing unnecessary demodulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal demodulates all received data without sender or receiver indication, then all data can be received, but processing energy consumption increases and processing capacity is wasted
Solution Approach 1:
The patent applies preliminary action by including sender and receiver identifiers in the SCI (Sidelink Control Information) before data transmission. This allows the receiving terminal to pre-determine whether the incoming data is intended for it by checking these identifiers against its own ID, avoiding unnecessary demodulation of irrelevant data packets and reducing processing energy consumption while maintaining complete reception of relevant data
Solution Approach 2:
The patent segments the data reception process into two stages: first, quick identification using sender/receiver identifiers in SCI to filter relevant data; second, detailed processing only of identified relevant data. This segmentation separates the filtering function from the demodulation function, enabling energy-efficient selective reception while ensuring no relevant data is missed
2Reliability
If the terminal demodulates all received data, then no data is discarded, but processing capacity is wasted on unnecessary data
Solution Approach 1:
The patent uses preliminary action by embedding sender and receiver identifiers in the SCI before data transmission. The receiving terminal performs preliminary filtering by comparing these identifiers with its own ID, determining in advance whether to process the incoming data. This ensures that only relevant data undergoes demodulation and processing, maintaining complete processing of all relevant data while eliminating waste of processing capacity on irrelevant data
Solution Approach 2:
The patent extracts the identification function from the data transmission process by separating sender/receiver identifier information in the SCI from the actual data payload. This extraction allows the terminal to identify and select only the data subsets that require processing, improving processing capacity utilization by focusing resources exclusively on relevant data while maintaining complete processing of all intended data
3Device complexity
If no sender or receiver indication is included in SCI, then SCI structure is simple, but terminal cannot distinguish unicast, multicast, and broadcast PSSCHs
Solution Approach 1:
The patent applies preliminary action by including sender and receiver identifiers in the SCI before data transmission. These identifiers enable the receiving terminal to determine the data type (unicast, multicast, or broadcast) by comparing the identifiers with its own ID and the data destination information. This approach maintains relatively simple SCI structure while providing sufficient information for accurate data type distinction and appropriate processing
Solution Approach 2:
The patent makes the sender and receiver identifiers in the SCI serve multiple functions: they identify the data source and destination, enable data type classification (unicast/multicast/broadcast), and guide the receiving terminal's processing decisions. This multi-functionality allows the SCI structure to remain compact while providing comprehensive data distinction capability across different transmission modes
4Reliability
If the terminal processes all received data at higher layer, then all data can be identified, but processing energy consumption increases
Solution Approach 1:
The patent applies preliminary action by performing data identification at the physical layer using sender and receiver identifiers in the SCI before higher layer processing. The terminal compares these identifiers with its own ID to determine relevance, making an early decision on whether to proceed with demodulation and higher layer processing. This preliminary identification at the physical layer maintains accurate data identification while significantly reducing processing energy consumption by avoiding unnecessary higher layer processing of irrelevant data
Data Source
AI summary
This disclosure discloses a sidelink information transmission method and a terminal. The method includes: receiving sidelink control information SCI; and determining, based on a sidelink transmission identifier indicated by the SCI, whether to receive or demodulate a physical sidelink shared channel PSSCH or not.