Two-stage competition-based MAC (media access control) protocol method in full duplex wireless network

A wireless network and access control technology, applied in the field of wireless network communication, can solve unreasonable and irrelevant problems

Active Publication Date: 2018-02-06
XIDIAN UNIV
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Problems solved by technology

For the full-duplex MAC protocol, it is obviously unreasonable for the node that wins the first-stage transmission to designate its node for full-duplex transmission regardless of the competition between the second-stage transmission nodes.

Method used

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  • Two-stage competition-based MAC (media access control) protocol method in full duplex wireless network
  • Two-stage competition-based MAC (media access control) protocol method in full duplex wireless network
  • Two-stage competition-based MAC (media access control) protocol method in full duplex wireless network

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Embodiment Construction

[0090] Such as figure 1 , 2 As shown, there are several full-duplex wireless networks, each network contains N full-duplex nodes, and all full-duplex nodes have the same full-duplex efficiency η, and each full-duplex node is equipped with a transmitting antenna With a receiving antenna, it can realize sending and receiving data at the same frequency at the same time. Channel 1 and the full-duplex channel corresponding to channel 1 are full-duplex channels of the same frequency. There are two kinds of full-duplex links in a full-duplex wireless network. If full-duplex wireless transmission occurs between two nodes, the link is called a two-node wireless full-duplex bidirectional link. If the first node has data to send to the second node, and the second node has data to send to the third node at the same time, the link is called a three-node wireless full-duplex asymmetric link. There are two types of full-duplex contention in all full-duplex links: two-node-initiated cont...

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Abstract

The invention discloses a two-stage competition-based MAC (media access control) protocol method in a full duplex wireless network, and proposes a method using a two-stage competition-based TF-MAC protocol to optimize the full duplex wireless network throughput; the control protocol comprises a RTS / FCTS / CTS handshake mechanism and a full duplex back off algorithm, thus solving the hidden node problems in the full duplex network, and reducing data frame bumping in the first stage transmission and the second node transmission; the method is suitable for a two-node symmetrical full duplex link and a three-node asymmetric full duplex link; the method can select three types of competition node transmission probabilities so as to obtain the optical throughput of the full duplex wireless network;the method uses a cascade two dimensional Markov chain model to analyze the performance of the full duplex wireless network employing the TF-MAC protocol, thus obtaining a full duplex wireless network throughput enclosed expression, and using the simulation result to verify the validity of the proposed TF-MAC protocol.

Description

technical field [0001] The invention belongs to the technical field of wireless network communication, and in particular relates to a method for a media access control protocol based on two-stage competition in a full-duplex wireless network. Background technique [0002] Compared with the half-duplex wireless communication technology, the full-duplex wireless communication technology has the potential of doubling the spectral efficiency, which can double the rate of the physical layer, so it has received extensive attention. A key challenge in the application of full-duplex wireless communication technology is how to suppress the self-interference between the transceiver antennas of the same node, and the continuous improvement of self-interference cancellation technology can significantly reduce the self-interference of full-duplex wireless communication transceiver antennas. Because the data link layer urgently needs to improve the throughput, therefore, in the full-duple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L5/14
CPCH04L5/14H04L69/03H04L69/26
Inventor 周彦果周韬张海林
Owner XIDIAN UNIV
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