Base Station Paging Notification Area for 5G Terminal Power Reduction
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Solution Overview
Problem
In a 5G communications system, the core network cannot distinguish between a terminal in RRC_CONNECTED mode and a third mode, leading to inefficiencies in paging a terminal device without an RRC connection, resulting in increased power consumption and communication delays.
Innovation Solution
A method where a first base station sends a request message to second base stations within a paging notification area to page the target terminal, with a timer to receive a response message, and if unsuccessful, sends a paging failure indication to the core network, allowing for reduced power consumption and faster communication by triggering core network paging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the core network triggers paging for a terminal in third mode, then the terminal can be reached, but power consumption increases and communication delay occurs
Solution Approach 1:
The patent segments the paging area into smaller regions managed by individual base stations rather than using a large core network-triggered paging area. Each base station manages its own paging notification area, enabling localized paging operations that reduce overall power consumption while maintaining reliable terminal contact.
Solution Approach 2:
The base station acts as an intermediary between the core network and the terminal. When data needs to be transmitted, the base station first attempts to page the terminal locally within its notification area. Only if this fails does it invoke the core network, thereby reducing unnecessary core network involvement and associated power consumption.
2Reliability
If the core network triggers paging for a terminal in third mode, then the terminal can be reached, but communication delay increases
Solution Approach 1:
The base station performs preliminary paging actions within its own notification area before involving the core network. By pre-establishing the paging process at the base station level and using timers to monitor response times, the system reduces the overall time required to reach the terminal compared to direct core network triggering.
Solution Approach 2:
The patent implements a feedback mechanism where the base station monitors the paging process using timers and tracks whether the terminal responds. If the terminal does not respond within a predetermined time, the base station then invokes the core network. This feedback loop eliminates unnecessary delays by avoiding core network involvement when local paging succeeds.
3Use of energy by moving object
If the base station triggers paging within a small paging notification area, then power consumption is reduced, but the complexity of managing multiple base stations increases
Solution Approach 1:
The base station is designed with multi-functionality, serving both as a local paging initiator and as a coordinator with the core network. The base station implements universal paging logic that can operate independently or invoke core network support, reducing the need for separate dedicated components and simplifying overall system management despite the distributed architecture.
Data Source
AI summary
This application discloses a communication method and a device, and the method includes: sending, by a first base station, a first request message, where the first request message is used to request one or more second base stations located in a paging notification area of a target terminal to page the target terminal; and if the first base station receives, within preset duration, a second request message that is sent by one of the one or more second base stations and that is used to obtain a context of the target terminal, sending, by the first base station, the context of the target terminal to the second base station that sends the second request message. A terminal device in a third mode may be paged by using the method and the device in this application.