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A data transmission method and device

A data transmission method and data packet technology, which are applied in the field of data transmission methods and devices, and can solve the problems of packet loss at the receiving end node, affecting the reliability of data services, and reporting errors, etc.

Active Publication Date: 2020-06-05
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] When the above user plane path switching is performed, if there are uplink and downlink data packets being transmitted in the network, packet loss or error reporting by the receiving end node may occur, thus affecting data transmission and service reliability

Method used

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  • A data transmission method and device
  • A data transmission method and device
  • A data transmission method and device

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Embodiment Construction

[0170] The specific implementation manner of the present invention will be further described in detail below with reference to the drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0171] Such as figure 2 As shown, the data transmission method in Embodiment 1 of the present invention is applied to the core network control plane functional entity, including:

[0172] Step 101: When it is necessary to add or delete a user plane anchor point for an activated PDU session, instruct the IP anchor point corresponding to the PDU session to cache downlink data packets.

[0173] In practical applications, when a UE initiates a PDU session to the same data network as an existing PDU session, it is necessary to add a user plane anchor point for the newly initiated PDU session. And when the user initiates to delete two PDU sessions to the same data network, the user plane nod...

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PUM

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Abstract

The invention provides a data transmission method and device, and relates to the technical field of communication. The data transmission method and device are used to improve the data transmission andservice reliability. The data transmission method of the invention comprises the following steps: when a user plane anchor point needs to be added or deleted for an activated protocol data unit PDU session, indicating an IP anchor point corresponding to the PDU session to cache a downlink data packet; indicating the user plane anchor point and the IP anchor point to update a user plane path; indicating an RAN to update the user plane path; and indicating the IP anchor point to send the downlink data packet through the updated user plane path. The data transmission method and device are mainlyused in the data transmission technology.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method and device. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution) system, the user plane nodes in the network include PGW (Packet Data Network Gateway, packet data gateway), SGW (Serving Gateway, serving gateway) and eNB (Evolved Node B, evolved base station) . These nodes have both control plane and user plane functions. The PGW is an IP anchor point, and is responsible for allocating an IP address for a UE (User Equipment, user equipment) and routing data to an external network. The SGW is the mobility anchor point, and the SGW can change according to the change of the UE's location during the UE's moving process. [0003] In the 5G system, an important technical trend is the separation of the control plane and the user plane. The control plane is responsible for the establishment, modification and dele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/02H04W40/24H04W40/34
CPCH04W28/021H04W40/248H04W40/34
Inventor 张娟王胡成
Owner DATANG MOBILE COMM EQUIP CO LTD