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Method for scanning state of adaptive wireless channel generated by shared secret key

A technology of wireless channel status and shared key, applied in wireless communication, access restriction, electrical components, etc., can solve the problems of inefficiency, waste of time, inefficiency, etc., to improve adaptability, reasonable and efficient network resources, computing small amount of effect

Active Publication Date: 2011-09-14
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

This strategy is neither efficient nor fast, because the speed of channel state change that determines the effective scanning rate is determined by factors such as the natural environment, node motion state, and electromagnetic environment, and cannot be directly predicted
When the channel state changes slowly, if the scanning rate is too high, it will cause a waste of network resources, because the randomness of the channel state is not enough to provide enough information
And when the channel state changes quickly, if the scanning rate is too low, it will waste time and cause the key generation time to be too long

Method used

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  • Method for scanning state of adaptive wireless channel generated by shared secret key
  • Method for scanning state of adaptive wireless channel generated by shared secret key
  • Method for scanning state of adaptive wireless channel generated by shared secret key

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Embodiment Construction

[0020] The present invention proposes an adaptive scanning rate method, which enables the system to adjust the scanning rate according to the current channel state while satisfying the key bit generation rate, so that the scanning efficiency is higher, so that the utilization rate of network resources is higher. The following is combined with the accompanying drawings and Examples further illustrate the present invention.

[0021] In this embodiment, the controller adopts a PID controller, such as figure 1 Shown, the workflow of the present invention is as follows:

[0022] The working process of the adaptive wireless channel state scanning method of the present invention is as follows:

[0023] Step 1, first preset the initial value of the scan rate between the two wireless communication nodes, and initialize the monitoring process TCPDUMP of the master node;

[0024] Step 2, the master node starts to send the ICMP PING packet, and utilizes the TCPDUMP monitoring process to...

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Abstract

The invention provides a method for scanning the state of an adaptive wireless channel generated by a shared secret key. Aiming at the problem of low resource utilization ratio caused by a constant scanning speed of the traditional RSS which obtains a generated key, a controller containing a corresponding relation between a channel state and a key bit generation rate expected by a user is introduced, automatic adjustment of the wireless channel scanning rate is finally realized by a feedback mechanism, so that network resources are reasonably and efficiently utilized, and the requirement of the user for key generation is simultaneously met.

Description

technical field [0001] The invention belongs to the field of wireless communication, and relates to an adaptive wireless channel state scanning method with a feedback controller, which is used for efficiently and quickly generating a shared key. Background technique [0002] The shared secret key generated by cryptography has inherent defects, and its security mostly depends on the complexity of the discrete logarithm problem, which may be easily cracked by quantum computers that may appear in the future. Therefore, using the randomness of the wireless channel state to generate a shared key has become a new method of non-cryptographic key generation, such as Kai Zeng et al. in the literature (“Exploiting multiple antenna diversity for shared secret key generation in wireless networks.” in Proceedings IEEEINFOCOM, Mar.2010, pp.1-9.). Since the state of the wireless channel at a certain moment is strongly related to the relative position between nodes, even if a third party h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/04H04W48/16H04W12/041
Inventor 窦丽华韦云川陈杰方浩邓方马旭峰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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