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Journal of Jishou University

Stop-Wait Protocol of Data Link Layer Based on Quantum Teleportation

Pengpeng Wang

Published Jan 1, 2010• 0 citations
OpenAlex

Abstract

The communication protocol of data link layer is studied based on quantum teleportation.When two sites communicate in data link layer,quantum frame is sent via quantum channel.When receiving quantum frame within the set time,the receiver returns to confirm frame via the quantum channel.According to the transient of quantum teleportation,the transmission delay of two sites communication is reduced;as a result,the minimum time span between two successfully delivered quantum frames can be reduced,the communication time is shortened and communication efficiency is improved.And since the sender on the transmission of quantum information is unknown,the confidentiality of information transmission is also increased.

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The communication protocol of data link layer is studied based on quantum teleportation.When two sites communicate in data link layer,quantum frame is sent via quantum channel.When receiving quantum frame within the set time,the receiver returns to confirm frame via the quantum channel.According to the transient of quantum teleportation,the transmission delay of two sites communication is reduced;as a result,the minimum time span between two successfully delivered quantum frames can be reduced,the communication time is shortened and communication efficiency is improved.And since the sender on the transmission of quantum information is unknown,the confidentiality of information transmission is also increased.
Based on the delocalized entanglement correlation and transience of transferring quantum information of quantum teleportation, an improved quantum stop-wait communication protocol for data link layer is presented.In the previous quantum stop-wait protocols, they only send the quantum acknowledgement frame (QACK) without sending quantum negative acknowledgement frame (QNACK).In this paper, we present an improved quantum stop-wait communication protocol that sends the negative frame QNACK as soon as possible when Bob detects the error of received data frame, instead of waiting for the retransmission time tout.As a result, the minimum time span between two successfully delivered data frames can be significantly reduced, and the communication time is shortened.It is shown that our protocol enhances the maximum throughput effectively and improves the communication efficiency in the data link layer.
In this paper we study the quantum selective repeat protocol of data link layer based on quantum teleportation. When two sites are communicating in the physical layer, the sender divides a series of qubits intom frames by adding auxiliary qubits. After continuously transmitting m quantum frames, the receiver judges whether he receives the correct quantum frame according to the classical information provided by the sender. If the receiver receives the correct quantum frames, he returns confirmed frames using the quantum channel. If the correct quantum frames are not received, the receiver does not return denial frames. The sender judges quantum frames which he must resend according to the received confirm frames in setting time. Because the sender resends only the quantum frames which are lost or mistaken, this protocol reduces the transmission delay and improves communication efficiency. In the entire course of communications, the classical channel is used only to transmit the survey information, thus its burden is reduced.
When a data frame is lost or corrupted during transmission,the solution adopted by the stop-,and-wait protocol of the data-link layer is overtime retransmission.An improved algorithm was proposed by utilizing the correlation in quantum entanglement and instantaneous transmission of quantum teleportation.When something wrong happened during the data transmission,the algorithm sends negative frame and the acknowledgement frame instantaneously,which reduces the minimum time interval between two successful data frame transmission.Compared with the classical stop-and-wait algorithm,quantitative analysis illustrates that our algorithm improves the data frame transmission efficiency.
By exploiting the entanglement correlation in quantum mechanics, a quantum communication, protocol for data link layer is proposed. The protocol divides the link into busy time and leisure time, where the data is sent via classical channel and the distribution of quantum entanglement is supposed to be completed at leisure time and the acknowledge frame is sent via quantum entanglement channel. The transmission of quantum information can be instantaneous; therefore the minimum time span between two successfully delivered data frames can be significantly reduced. It is shown that the proposed protocol enhances the maximum throughput effectively and improves the performance of the stop-and-wait protocol of data link layer.
Qubits must be sent again when some qubit errors occur in the data frame in the quantum network between the two communicate sites.Although this repeat guarantees the data accuracy,the pressure of the communication channel is increased.In order to reduce the pressure of the channel and improve the efficiency of selective repeat protocol,the authors analyze the existing selective repeat protocol from the process of quantum states’ replication and teleportation.So the cache of the channel is introduced and the selective repeat protocol of the data link layer is improved.Furthermore,the authors compare the efficiency of protocol and the utilization ratio of channel with previous scheme and provide a reference for seeking more effective and efficient communication means.
After analyzing the classical sliding window protocol,the authors established the quantum channel based on instantaneous transmission of quantum information,and proposed a quantum communication protocol of the sliding window based on quantum entanglement.The proposed protocol distributes the EPR pairs to establish a quantum channel,transmission by sending data frames and quantum acknowledge frame.It shows that the protocol not only plays an important role in the sliding window protocol in quantum information transfer process to reduce the delay,but also has a more important value in telecommunications and in severe cases of network congestion.