MAC layer low-delay rapid reconnection method for millimeter wave ad hoc network

Abstract

The invention belongs to the technical field of wireless networks, and particularly relates to an MAC layer low-delay rapid reconnection method for a millimeter wave ad hoc network. Compared with a traditional CSMA / CA protocol in which a binary exponential backoff process is started as long as communication fails, the provided method has the advantages that when the communication fails, a failure discrimination mechanism is used for discriminating failure reasons, and a backoff mechanism is further used for setting different initial contention windows (CW) and carrying out corresponding backoff competition according to different failure reasons. Due to the fact that millimeter waves are short in wavelength, poor in diffraction capacity and prone to being shielded in a communication link in a network, under the condition that communication fails due to link shielding, it is easier for nodes to compete again to obtain a channel, interruption rapid reconnection of an MAC layer is achieved, the influence of shielding on the performance of the whole millimeter wave wireless self-organizing network is reduced to the minimum extent, and the technical advantages of the millimeter wave wireless ad hoc network are brought into full play.

Description

technical field [0001] The invention belongs to the technical field of wireless networks, and in particular relates to a MAC layer low-delay fast reconnection method for millimeter-wave ad hoc networks. Background technique [0002] With the development of computer communication technology, more and more emerging applications such as virtual reality, augmented reality, and 3D media have entered people's lives, and at the same time, people have higher and higher requirements for communication speed. With its large bandwidth, high transmission rate (up to gigabits per second), narrow beam, good directionality and confidentiality, and strong anti-interference ability, millimeter wave has become a domestic focus of attention of foreign researchers. However, due to the short wavelength and poor diffraction ability of the millimeter-wave signal, coupled with the narrow beam and good directivity, in the process of using the millimeter-wave wireless ad-hoc network, it is easy to be...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problem that the communication link in the networking is easily interrupted and unstable due to the short wavelength of the millimeter wave and the fact that it is easily blocked in the millimeter wave ad hoc network. A low-latency fast reconnection algorithm at the MAC layer for millimeter-wave ad hoc networks is proposed. When the link is temporarily interrupted due to occlusion, fast reconnection can be achieved at the MAC layer, thereby minimizing the impact of occlusion on the entire millimeter-wave ad hoc network. The impact of networking, give full play to the advantages of millimeter wave wireless ad hoc network

Images