5G NR Paging Indication for Signaling Load Reduction
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Solution Overview
Problem
In 5G NR communication systems, the high number of beams used in cells increases the signaling load due to the need to send paging messages in each beam, making it challenging for user equipment (UE) to distinguish specific paging solutions for the present cell, leading to inefficient paging processes.
Innovation Solution
A method where a network device sends indication information to a terminal device to specify the paging manner used by the present cell, allowing the terminal device to correctly decode and acquire paging messages, using System Information, Physical Downlink Control Channel scrambled by Paging Radio Network Temporary Identifier, or a first message containing the indication and paging message.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paging messages are sent in each beam of each cell, then the UE can be reliably paged in high-frequency cells with multi-beam forms, but the signaling load of the network increases significantly
Solution Approach 1:
The patent segments the paging process into two distinct parts: (1) sending paging indication information in each beam to notify UEs of potential paging, and (2) sending the actual paging message only to UEs that indicate interest. This segmentation allows the system to maintain reliable paging coverage across all beams while significantly reducing the quantity of paging messages transmitted, thereby resolving the contradiction between paging reliability and signaling load.
Solution Approach 2:
The patent implements partial action by sending paging indication information to all UEs in a cell rather than complete paging messages to all UEs. Only UEs that are actually paged and indicate interest receive the full paging message. This partial action approach maintains paging reliability for all potential targets while reducing overall signaling load by avoiding unnecessary transmissions to UEs without paging needs.
2Adaptability or versatility
If multiple paging solutions are supported in 5G NR, then the system provides flexibility for different scenarios, but the UE cannot distinguish which paging solution is used by the present cell
Solution Approach 1:
The patent introduces an intermediary element - the Physical Downlink Control Channel (PDCCH) - that carries paging indication information between the network and the UE. This intermediary provides the missing information about the paging solution being used, allowing the UE to distinguish between different paging methods (e.g., beam-specific paging vs. cell-wide paging) without compromising the flexibility of supporting multiple paging solutions. The PDCCH acts as a mediator that bridges the gap between multiple supported solutions and UE awareness.
Data Source
AI summary
Provided are a method for paging, a terminal equipment, and a network equipment. The method comprises: a terminal equipment receives indication information sent by a network equipment, the indication information being used for indicating the paging mode used by the current cell of the terminal equipment; the terminal equipment obtains a paging message according to the indication information. In embodiments of the present invention, a network equipment indicates, by means of the indication information, the paging mode used by the current cell of a terminal equipment, so that the terminal equipment can distinguish the paging mode used by the current cell of the terminal equipment, thus paging-related information can be correctly decoded, thereby correctly obtaining a paging message.