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A method and device for requesting connection recovery

A technology for connection recovery and connection recovery, which is applied in connection management, wireless communication, electrical components, etc., and can solve problems such as timer information tampering

Active Publication Date: 2021-05-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This application provides a method and device for requesting connection recovery to solve the problem that timer information is tampered with

Method used

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  • A method and device for requesting connection recovery
  • A method and device for requesting connection recovery
  • A method and device for requesting connection recovery

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Embodiment Construction

[0070] The application will be described in further detail below in conjunction with the accompanying drawings. The specific operation methods in the method embodiments can also be applied to the device embodiments or system embodiments. Wherein, in the description of the present application, unless otherwise specified, "plurality" means two or more.

[0071] It should be noted that the method for requesting connection recovery in this application may be executed by a device. Wherein, the device may include a device on the network side and / or a device on the terminal side. On the network side, the device may be a base station or a chip in the base station, that is, the base station or a chip in the base station may execute the method for requesting connection restoration in this application; on the terminal side, the device may be a terminal or a chip in the terminal, that is, The method for requesting connection recovery of the present application may be executed by a termi...

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Abstract

The present application provides a method and device for requesting connection recovery. The method includes: the terminal sends a connection recovery request message to the target base station; the terminal receives a connection recovery rejection message and a message authentication code from the target base station, the connection recovery rejection message includes timer information, and the message authentication code is based on the integrity protection of the source base station The key and the timer information are generated; if the terminal verifies that the message authentication code is correct according to the timer information and the integrity protection key of the terminal, it will initiate a connection recovery request process according to the timer information. Before using the timer information, the terminal first checks the message authentication code. If the verification is correct, the timer information is considered not to have been modified by the attacker. Therefore, the terminal initiates a connection recovery request process based on the timer information, so that the terminal can operate normally. The connection recovery request is reinitiated according to the information of the timer, which effectively avoids using the information of the timer tampered with by the attacker.

Description

technical field [0001] The present application relates to the technical field of mobile communication, and in particular to a method and device for requesting connection restoration. Background technique [0002] In long term evolution (LTE), the suspend and resume process can be used for narrowband-Internet of things (narrowband internet of things, NB-IoT) terminals, that is, IoT devices with low mobility or low power consumption, Such as smart water meters. [0003] When the base station notifies the terminal to release the current connection in a suspended manner, the terminal and the base station will delete part of the context of the access layer, and will also retain part of the context of the access layer, such as the access layer key, the security capability of the terminal, the current Selected security algorithms, etc. Then the terminal enters the inactive state from the connected state. When the terminal wishes to restore the connection with the base station, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W76/27H04W76/19
CPCH04W76/00H04W76/19H04W76/27
Inventor 胡力陈中平李秉肇陈璟
Owner HUAWEI TECH CO LTD