Targeted Paging via Non-3GPP Location Data

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Solution Overview

Problem

In LTE networks, paging UE in a large registration area results in a high number of paging messages being sent, occupying excessive air interface resources.

Innovation Solution

A paging method where the mobility management network element determines the target base station based on the UE's location information in the non-3GPP network, sending a paging message only to that station, thereby reducing the number of messages and conserving air interface resources.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the network side pages all base stations in the UE's registration area, then the UE can be reliably reached, but the quantity of paging messages increases and air interface resources are occupied

Engineering Contradiction:

ImproveUE reachabilityVSAvoidpaging message quantity

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The registration area is segmented into multiple base station coverage areas. Instead of paging all base stations, the network divides the paging task by sending paging messages only to specific base stations where the UE is most likely to be located, based on available location information.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The paging approach transitions from a uniform global paging strategy to a localized strategy. The network uses the UE's last known location or associated base station information to target paging messages locally to specific base stations rather than broadcasting to the entire registration area.

Inventive Principle:

Principle #3Local quality

2Device complexity

If the network uses a large registration area for the UE, then mobility management is simplified, but the paging range increases and more base stations need to be notified

Engineering Contradiction:

Improvemobility management complexityVSAvoidpaging range

Core Design Contradiction:

Device complexityVSArea of stationary object

Solution Approach 1:

The network performs preliminary actions by maintaining location information about the UE (such as the base station where the UE was last active or the UE's current cell ID) before paging is needed. This preliminary location tracking enables targeted paging without requiring a smaller registration area.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary mechanism where the MME uses location information (such as TAI, cell ID, or associated base station) as a mediator to bridge between the large registration area and the specific UE location, enabling precise paging without reducing the registration area size.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS10945233B2Paging method, device, and system

Publication Date: 2021.03.09 HUAWEI TECH CO LTD

AI summary

A paging method, a paging device, and system are described. A mobility management network element (MME) obtains location information of user equipment (UE) in a non-3rd Generation Partnership Project (3GPP) network, where the UE already accesses the non-3GPP network. The MME receives a downlink data notification message, where the downlink data notification message carries an identifier of the UE. The MME pages the UE according to the location information of the UE in the non-3GPP network. In some implementations, a paging range may be determined according to the location information of the UE in the non-3GPP network, and a paging message does not need to be sent to all base stations in a registration area of the UE.