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Downlink data caching method, network equipment and UPF entity

A technology of downlink data and network equipment, applied in the field of communication

Inactive Publication Date: 2020-03-24
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a downlink data caching method, network equipment, and UPF entity, which are used to provide a new downlink data caching method to solve how to cache downlink data when the UE is in the RRC Inactive state and uses the eDRX mechanism

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  • Downlink data caching method, network equipment and UPF entity
  • Downlink data caching method, network equipment and UPF entity
  • Downlink data caching method, network equipment and UPF entity

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Embodiment Construction

[0143] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0144] In each eDRX cycle, the UE can only respond to paging paging within the time of the paging time window (Paging Time Window, PTW). At other times, the UE will turn off the AS layer and stop responding to paging, so as to achieve the purpose of power saving. At this time, the downlink data will not be sent directly to the UE.

[0145] For this, in the R16 5G CIoT research project, when the UE is in the RRC Inactive state and uses the eDRX mechanism, the existing technology provides a downlink data caching method, that is, when the UE enters the RRC Inactive state and the UE uses the eDRX mechanism, Request the user plane function (User Plane Function, UPF) entity to cache th...

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Abstract

The invention discloses a downlink data caching method, network equipment and a UPF entity, and is used for providing a new downlink data caching method so as to solve the problem of how to cache downlink data when UE is in an RRC Active state and uses an eDRX mechanism. The downlink data caching method comprises the following steps: a radio access network RAN receives downlink data from a user plane function UPF entity; when the RAN determines that the terminal is in an unreachable state, a first request message is sent to the UPF entity, and the first request message is used for requesting the UPF entity to cache the downlink data; and the RAN sends the received downlink data to the UPF entity.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a downlink data buffering method, network equipment and UPF entity. Background technique [0002] The third generation mobile communication standardization partnership project (3rd Generation Partnership Project, 3GPP) R15 defines a new state of terminal equipment, such as user equipment (User Equipment, UE), radio resource control inactive (Radio Resource Control Inactive, RRC Inactive) state. When the UE is in the RRC Inactive state, the UE's air interface RRC connection and data radio bearer (Data Radio Bearer, DRB) will be released, and the user plane connection between the radio access network (Radio Access Network, RAN) and the core network and The control plane connection will be maintained, and the UE context is saved on the UE side and the RAN side. [0003] When the UE needs to send uplink data or respond to RAN paging, it will initiate a resume process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W76/27H04W76/28H04L29/08
CPCH04W76/27H04W76/28H04L67/568
Inventor 邓强
Owner DATANG MOBILE COMM EQUIP CO LTD
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