NR-PDCCH Paging Filtering for Signaling Overhead Reduction
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Solution Overview
Problem
In New Radio (NR) communication, the high signaling overhead due to repeated transmission of paging messages in different directions increases power consumption and reduces efficiency, as existing methods require complete identification information to be sent in the Physical Downlink Shared Channel (PDSCH), and lack clear indication in the Physical Downlink Control Channel (PDCCH) for User Equipment (UE) to determine if the message is intended for it.
Innovation Solution
The method involves transmitting first information in the NR-PDCCH for the UE to determine if it is intended for them, and second information including only a part of the identification information in the NR-PDSCH, allowing the UE to filter out non-intended messages and reducing the number of bits required in the PDSCH, thereby reducing signaling overhead and improving transmission performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complete identification information is sent in the PDSCH, then the UE can accurately determine whether the paging message is intended for it, but the signaling overhead increases
Solution Approach 1:
The identification information is segmented into two parts: a first part (shortened identifier) is sent in the PDCCH, and a second part (complete identification information) is sent in the PDSCH. This segmentation allows the UE to perform initial filtering using the shorter identifier, reducing the need to process complete identification information for all messages, thereby reducing signaling overhead while maintaining identification accuracy.
Solution Approach 2:
The first part of the identification information is provided in advance in the PDCCH before the UE receives the PDSCH. This preliminary action enables the UE to pre-filter paging messages intended for other UEs, avoiding the need to fully decode and process PDSCH messages that are not intended for it, thus reducing overall signaling overhead and processing complexity.
2Adaptability or versatility
If paging messages are repeatedly sent on beams in different directions, then UEs at different positions can receive the messages, but the signaling overhead increases
Solution Approach 1:
The essential identification function is extracted from the PDSCH and placed in the PDCCH through the first part of the identification information. This extraction allows the UE to quickly determine relevance before investing resources in decoding the full PDSCH message, making the repeated beam transmissions more efficient by reducing redundant processing of non-intended messages across multiple beams.
3Reliability
If the UE monitors PDCCH and PDSCH continuously, then it can receive paging messages promptly, but power consumption increases
Solution Approach 1:
The UE performs preliminary monitoring of the PDCCH for the first part of identification information before committing resources to decode the full PDSCH. This preliminary action enables the UE to quickly identify and ignore messages not intended for it, allowing the UE to return to sleep mode sooner and reducing overall power consumption while maintaining prompt response to actual paging messages.
Solution Approach 2:
The UE skips the detailed decoding of PDSCH messages when the first part of identification information in the PDCCH indicates the message is not intended for it. This skipping mechanism allows the UE to rapidly filter out irrelevant messages without investing energy in full message processing, thereby reducing power consumption while maintaining responsiveness to relevant paging messages.
Data Source
AI summary
Disclosed in the present application are an information transmission method and a related product. The method comprises: a user equipment listens for a physical downlink control channel (NR-PDCCH) to obtain first information transmitted on the NR-PDCCH, the first information being used for determining, by the user equipment, whether the NR-PDCCH is for the user equipment; and when the NR-PDCCH is for the user equipment, the user equipment listens for a corresponding physical downlink data shared channel (NR-PDSCH) to obtain second information transmitted on the NR-PDSCH, the second information comprising identifier information of a first part of a user. By using embodiments of the present application, signaling overheads are reduced.