Quantum communication network operation index evaluation method based on entropy evaluation method
A quantum communication and network operation technology, which is applied to secure communication devices and key distribution, can solve the problems of passivation of quantum network abnormal state judgment ability, difficulty in adapting to quantum network operating state, abnormal state judgment accuracy, and low implementability.
Pending Publication Date: 2020-11-13
CAS QUANTUM NETWORK CO LTD
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[0002] At present, the quantum communication network network management system has realized real-time data collection of quantum key distribution (Quantum Key Distribution, hereinafter abbreviated as QKD) network node operating indicators such as the quantum communication backbone network, metropolitan area network, and user network. not many applications
[0003] Quantum communication network operation indicators usually have abnormal states such as low coding rate between sites, low link coding rate, and exhaustion of usable keys. For these abnormal states, there are related network feature schemes and judgment methods Quantitatively measure it, but these methods are all specific to a certain abnormal state of a certain network element to judge, and do not combine multiple abnormal states and comprehensive judgments of multiple network elements
[0004] The quantum communication network may superimpose various abnormal states, and the evaluation of an abnormal state alone has limitations. It is difficult to determine which QKD network node has the more serious abnormal state, and which QKD network node needs priority control and protection; secondly, Existing methods only evaluate instantaneous abnormal states, and cannot cope with abnormal fluctuations caused by the changeable state of quantum networks, resulting in low accuracy and implementability of abnormal state judgments; finally, the existing quantum network index evaluation , the result is only for a static evaluation system for a certain day or a certain moment, it is difficult to adapt to the changeable quantum network operating state, and it is easy to cause the passivation and weakening of the staff's ability to judge the abnormal state of the quantum network
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Embodiment 1
[0109] like figure 1 A method for evaluating the dynamics of quantum network index operation based on the entropy value method is shown, including: s1. Record the operating data of each QKD network node in each collection interval t from the s-k+1 day to the s-th day, As the statistical basic data of the sth day, k≤s, k represents the total evaluation days, k, s are both positive integers; in this embodiment, the total evaluation days k is 90 days, and the collection interval t is 15 minutes, Starting from 0:00 on the s-k+1 day, the operation data of each QKD network node is collected every 15 minutes, and the operation data of each QKD network node for k days is counted as the statistical basic data of the s-th day , the operating data includes: the coding rate a between sites of the quantum network, the coding rate b between links, the number of keys that can be used c, the bit error rate d of qubits, the integrity rate e of quantum equipment, and the timely handling of quan...
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The invention relates to a quantum communication network operation index evaluation method based on an entropy evaluation method, and the method comprises the following steps: 1, obtaining the operation data of each QKD network node at each collection interval t from the (s-k+1)th day to the sth day, and taking the operation data as the statistical basic data of the sth day, wherein k is the number of days of a period of evaluation time; 2, calculating an abnormal index of each QKD network node according to the statistical basic data of the sth day; 3, performing normalization processing on each abnormal index of each QKD network node calculated in the step 2; 4, calculating an exception weight value of each exception index of each QKD network node after normalization processing; 5, respectively calculating an entropy value and a difference factor corresponding to each abnormal index; 6, calculating a final evaluation weight value of each abnormal index according to the difference factor; and 7, calculating a comprehensive evaluation value of each QKD network node, and taking the size of the comprehensive evaluation value as a measurement standard of the exception handling priorityof the QKD network node. According to the method, the defect that a traditional method for evaluating the abnormal state of the quantum network at a certain moment only has limitation is overcome, and the changeable quantum network operation state can be better reflected.
Description
technical field [0001] The invention belongs to the technical field of quantum communication networks, and more specifically relates to a dynamic evaluation method of quantum network indicators based on an entropy method. Background technique [0002] At present, the quantum communication network management system has realized real-time data collection of quantum key distribution (Quantum Key Distribution, hereinafter abbreviated as QKD) network node operating indicators such as the quantum communication backbone network, metropolitan area network, and user network. There are not many applications. [0003] Quantum communication network operation indicators usually have abnormal states such as low coding rate between sites, low link coding rate, and exhaustion of usable keys. For these abnormal states, there are related network feature schemes and judgment methods Quantitatively measure it, but these methods are all specific to a certain abnormal state of a certain network ...
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IPC IPC(8): H04L9/08
CPCH04L9/0855H04L9/0852
Inventor陈柱夏晨臣王平张远洋
OwnerCAS QUANTUM NETWORK CO LTD