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A data transmission method and device

A data transmission method and technology of a data transmission device are applied in the directions of digital transmission system, transmission system, error prevention, etc., which can solve the problems of service interruption and the target cell does not receive the SN status message, so as to avoid service interruption and complete transmission. Effect

Active Publication Date: 2022-04-05
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present invention provide a data transmission method and device to solve the problem that the target cell does not receive the SN status message after the terminal switches from the source cell to the target cell to a certain extent, resulting in service interruption

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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

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0034] It should be understood that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Thus, appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily referring to the same embodiment. Furthermore, the particu...

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Abstract

Embodiments of the present invention provide a data transmission method and apparatus. The method comprises the following steps: after the terminal switches from the source cell to the target cell, obtaining the SN of the target data packet to be confirmed whether the terminal has successfully received; The data content of the packet includes the SN of the target data packet corresponding to the PING packet; the second PING packet returned by the receiving terminal in the case of receiving the first PING packet, the SN included in the data content of the first PING packet is that the terminal is unsuccessful The minimum SN in the SN of the received data packet, the data content of the second PING packet is the same as the data content of the first PING packet; the data packet whose SN is greater than or equal to the target SN is sent to the terminal, and the target SN is in the second PING packet. The data content includes the SN. Therefore, the solution of the present invention solves, to a certain extent, the problem that the target cell does not receive the SN status message after the terminal switches from the source cell to the target cell, resulting in service interruption.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a data transmission method and device. Background technique [0002] FTP (File Transfer Protocol, File Transfer Protocol), is a standard protocol for file transfer on the network, using a client / server model. Among them, FTP can be considered as a tool software. For example, users can easily upload articles to the website server through FTP, and can also conveniently download website files from the server. [0003] In addition, the FTP service has high requirements on data transmission and cannot lose packets. However, in the NR system, under the condition of doing FTP business, after the terminal is handed over from the source cell to the target cell, because the SN status message of the PDCP layer of the source cell is not sent to the PDCP layer of the target cell, the SN of the target PDCP layer ( serial number) is the initial value, which causes the SN numbers ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L67/06H04L1/16H04L1/18H04W36/00
CPCH04L67/06H04L1/1607H04L1/188H04W36/0011
Inventor 丁卫驾
Owner DATANG MOBILE COMM EQUIP CO LTD
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