PDSCH Feedback Timing for Multi-Carrier NR Terminals
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Solution Overview
Problem
The existing methods for calculating the reception processing time of a Physical Downlink Shared Channel (PDSCH) in a New Radio (NR) system with multi-carrier cell configuration are inadequate, as they assume independent reception processes for each carrier, which is not applicable when a single receiving unit is used for multiple carriers.
Innovation Solution
A data processing method and apparatus that determine the reception processing time (T_proc) of a PDSCH by summing the first and second reception processing times, with additional processing times delta N and d 1,1,SCOM, considering the presence or absence of additional demodulation reference signals (DMRS) and carrier configurations, to ensure timely feedback of decoding results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If carrier aggregation technology is used to achieve higher service transmission rates, then the transmission rate is improved, but the terminal capability requirements and public signaling overhead increase
Solution Approach 1:
The patent combines multiple carriers into a single multi-carrier cell, where multiple carriers are aggregated under one cell identity and managed by a single serving cell. This merging approach allows the terminal to receive data from multiple carriers through a single receiving unit rather than requiring separate receiving units for each carrier, thus reducing terminal capability requirements while maintaining high transmission rates
Solution Approach 2:
The multi-carrier cell structure allows a single cell to perform the function of multiple cells by managing multiple carriers. The base station can schedule and transmit data across multiple carriers through a unified cell framework, making the system more versatile and reducing the complexity of carrier management for terminals
2Ease of operation
If the related art N_proc calculation method is used for multi-carrier scheduling, then the calculation is simple, but it is not applicable when a single receiving unit processes multiple carriers
Solution Approach 1:
The patent modifies the reception processing time parameter calculation by introducing additional processing time components specifically for multi-carrier scenarios. The formula is adjusted to account for the extra time needed when a single receiving unit processes multiple carriers, changing the parameters from the traditional per-carrier independent calculation to a unified multi-carrier calculation that includes additional time for carrier aggregation processing
Data Source
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AI summary
Provided are a data processing method and apparatus, and a terminal. The method includes: receiving, by the terminal, a physical downlink shared channel (PDSCH) sent by a base station on a multi-carrier cell, and receiving timing information of feeding back a decoding result of a PDSCH indicated by the base station; determining a reception processing time T_proc of the PDSCH; and determining a feedback time of the decoding result of the PDSCH according to the timing information and the T_proc, wherein the feedback time of the decoding result of the PDSCH is not earlier than the T_proc.