Access Network Device Paging Parameter Pre-Storage
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Solution Overview
Problem
In the context of 3GPP Release 14, effectively paging a terminal device in light connected mode is challenging due to the core network's unawareness of the device's status, leading to inefficient downlink data transmission as the access network struggles to initiate timely paging without accurate paging parameters.
Innovation Solution
The proposed method involves obtaining a paging parameter group for a terminal device before it switches to light connected mode, allowing the access network to generate and send a paging message based on these parameters, ensuring the terminal device can be quickly and effectively paged, thereby reducing core network signaling overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the core network device processes downlink data based on the assumption that the terminal device is in connected mode, then the core network can maintain simplified routing, but the access network device cannot effectively page the terminal device in light connected mode due to lack of paging parameters
Solution Approach 1:
The patent applies preliminary action by obtaining and storing the paging parameter group for the terminal device before it switches to light connected mode. The access network device retrieves the paging parameters (including paging ID, DRX cycle, and PF offset) from the core network or terminal device in advance, so that when paging is needed, the access network device can immediately use these pre-obtained parameters to effectively page the terminal device without needing to request them again.
2Use of energy by moving object
If the terminal device enters light connected mode and hides its status from the core network, then the terminal device can reduce power consumption, but the access network device loses the ability to obtain accurate paging parameters
Solution Approach 1:
The patent resolves this contradiction by performing preliminary action - obtaining the paging parameter group before the terminal device enters light connected mode. The access network device acquires the paging parameters (paging ID, DRX cycle, PF offset) while the terminal is still in connected mode, stores them locally, and uses them for paging when the terminal is in light connected mode. This eliminates the need for the terminal to continuously report its status to the core network.
Solution Approach 2:
The patent uses the paging parameter group as an intermediary that bridges the information gap. Instead of requiring continuous terminal status reporting to the core network, the paging parameters obtained in advance serve as a mediator that enables the access network device to effectively page the terminal device even when the terminal's exact status is hidden from the core network.
3Extent of automation
If the access network device requests paging parameters from the core network after the terminal enters light connected mode, then the core network maintains centralized control, but signaling overheads increase and paging response time is delayed
Solution Approach 1:
The patent applies preliminary action by having the access network device obtain the paging parameter group before the terminal device enters light connected mode. This pre-obtained paging parameter group includes the paging ID, DRX cycle, and PF offset, which are stored locally at the access network device. When downlink data arrives and paging is needed, the access network device can immediately use these pre-stored parameters to page the terminal device without initiating additional signaling with the core network, thus reducing both signaling overhead and paging response time while maintaining the ability to page effectively.
Data Source
AI summary
The present invention discloses a paging method and apparatus, The method includes: obtaining, by a first access network device in a first time period, a first paging parameter group used for paging a terminal device, where the first time period is a time period before the terminal device switches from a connected mode to a light connected mode, and the first access network device is an access network device to which the terminal device is connected last time before the terminal device enters the light connected mode or an idle mode; and generating, by the first access network device, a paging message for the terminal device based on the first paging parameter group, and sending the paging message.