PDCCH and Data Channel Repetition for Robust 5G NR Transmission
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Solution Overview
Problem
In the context of 5G New Radio (NR) communication technology, there is a lack of effective solutions for coordinating control channels and data channels during repeated data transmission, which affects communication robustness.
Innovation Solution
The method involves a terminal device and a network device exchanging at least two Physical Downlink Control Channels (PDCCHs) and corresponding data channels, where the PDCCHs and data channels may carry the same or different content, enabling joint repeat transmission to enhance communication robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple PDCCHs and data channels are transmitted for repeated data reception, then communication robustness is improved, but coordination between control channels and data channels becomes complex and lacks effective solutions
Solution Approach 1:
The patent combines control channel (PDCCH) and data channel (PDSCH) transmissions into a unified repeated transmission framework. Multiple PDCCHs and multiple PDSCHs are coordinated through shared scheduling information, where the PDCCH carries scheduling parameters that apply to both the control and data channels, enabling synchronized repetition without separate coordination mechanisms
Solution Approach 2:
The PDCCH carries preliminary scheduling information that pre-defines the repetition parameters for both control and data channels. By establishing the scheduling framework in advance through the PDCCH, the system eliminates the need for real-time coordination during data channel transmission, reducing complexity while maintaining reliability
2Reliability
If joint repeat transmission of control and data channels is implemented, then transmission reliability is enhanced, but the system requires sophisticated coordination mechanisms that are currently lacking
Solution Approach 1:
The PDCCH is designed to serve multiple functions simultaneously: it schedules both control channel repetitions and data channel repetitions using a unified scheduling mechanism. The scheduling information in the PDCCH applies universally to multiple PDSCH transmissions, eliminating the need for separate coordination protocols and simplifying the overall system operation
Data Source
AI summary
A method for data transmission includes: receiving at least two PDCCHs and transmitting at least two data channels, in which the at least two data channels are scheduled by the at least two PDCCHs; and the at least two PDCCHs carry same content, or the at least two data channels carry same content, or the at least two PDCCHs carry same content and the at least two data channels carry same content.