Data transmission method and device

A data transmission method and data technology, applied in the field of communication, can solve problems such as poor communication security, and achieve the effect of improving security and reducing the risk of being attacked

Active Publication Date: 2020-02-21
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This creates malicious threats to terminal equipment and n

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  • Data transmission method and device

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[0044] The data transmission method and device provided in the embodiments of the present application can be applied to a communication system using the Packet Data Convergence Protocol (PDCP), and the communication system can perform wireless communication or wired communication. For example, the communication system may be a long term evolution (LTE) communication system and its subsequent evolution communication system, a future 5G communication system, and other communication systems.

[0045] Exemplary, figure 1 This is an architecture diagram of a communication system to which the embodiments of this application apply. Such as figure 1 As shown, the communication system may include a terminal device 100, a network device 200, and a core network device 300. The terminal device 100 and the network device 200 may perform uplink and downlink communication through an air interface. The terminal device 100 may perform uplink and downlink communication between the network device ...

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Abstract

The embodiment of the invention provides a data transmission method and device. The data transmission method comprises the steps of generating a PDCP data packet by performing integrity protection onto-be-sent data, wherein the PDCP data packet comprises identification information and integrity protection information, and the identification information is at least used for indicating that integrity protection is carried out on data carried in the PDCP data packet, and the integrity protection information is used for carrying out integrity verification on the data carried in the PDCP data packet; and sending the PDCP data packet. According to the data transmission method provided by the embodiment of the invention, integrity protection is performed on the data carried in the PDCP data packet, and indication is performed through the identification information, so that the security of data transmission is improved.

Description

technical field [0001] The embodiments of the present application relate to the field of communication technologies, and in particular, to a data transmission method and device. Background technique [0002] In a long term evolution (long term evolution, LTE) communication network, user plane data transmitted over an air interface between a terminal device and a network device only supports confidentiality protection. [0003] For the transmission of uplink data, the terminal device encrypts the user plane data with an encryption key and an encryption algorithm, and sends the encrypted data to the network device. Correspondingly, the network device uses the same key to decrypt the ciphertext to obtain user plane data. For the transmission of downlink data, the network device encrypts the user plane data with an encryption key and an encryption algorithm, and sends the encrypted data to the terminal device. Correspondingly, the terminal device uses the same key to decrypt t...

Claims

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Application Information

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IPC IPC(8): H04L29/06
CPCH04L63/123H04W12/106H04W12/61H04W12/033H04W92/10H04W12/37H04W12/108H04W12/69H04W12/041H04W80/02
Inventor 张博吴荣谭帅帅
Owner HUAWEI TECH CO LTD
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