Method, device and medium for mac layer data transmission of Internet of Vehicles based on time slot reservation
A transmission method and layer data technology, applied in the field of mobile communications, can solve problems such as large transmission conflicts, large negotiation conflicts, public control channel congestion, etc., and achieve the effect of alleviating congestion
Active Publication Date: 2022-05-24
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
In the existing data transmission schemes, there are problems such as low channel utilization, high delay, and large transmission conflicts, which cannot meet the requirements of non-secure data packet transmission.
[0004] Furthermore, at high node density, congestion of the common control channel is a key cause of service channel bottleneck
Since the nodes need to compete on the common control channel and negotiate data transmission on the service channel, when there are many nodes, the negotiation conflict is relatively large, and it is difficult for the node pair to successfully negotiate on the control channel, resulting in that even if the service channel has many idle time slots, Nodes also cannot send on the service channel, wasting service channel resources
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[0065] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation of the present invention. The numbers of the steps in the following embodiments are set only for the convenience of description, and the sequence between the steps is not limited in any way, and the execution sequence of each step in the embodiments can be adapted according to the understanding of those skilled in the art Sexual adjustment.
[0066] In the description of the present invention, it should be understood that the azimuth description, such as the azimuth or position relationship indicated by up,...
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The invention discloses a time slot reservation-based MAC layer data transmission method, device and medium of the Internet of Vehicles, wherein the method includes: the service provider node j propagates the WSA packet to the service applicant node k; the service applicant node k receives the WSA package, obtain the first information table, obtain several transmission schemes according to the WSA package and the first information table, and feed back the transmission schemes to the service provider node j; the service provider node j receives the transmission scheme, obtains the second information table, and according to the transmission The scheme and the second information table obtain the final transmission scheme, propagate the ACK packet to the one-hop neighbor node according to the final transmission scheme, and send the non-secure data packet to the service applicant node k according to the final transmission scheme. The present invention adopts the method of reserving the time slot of the service channel, and the nodes can reserve the data transmission on the service channel of several frames in the future after only one negotiation on the control channel, so as to alleviate the congestion of the control channel, and can be widely used in the field of mobile communication .
Description
technical field [0001] The present invention relates to the field of mobile communications, in particular to a method, device and medium for data transmission at the MAC layer of the Internet of Vehicles based on time slot reservation. Background technique [0002] In recent years, with the development of wireless technology, ad hoc networks and the automotive industry, vehicle ad hoc networks have been widely studied by scholars. At the same time, with the proliferation of Internet multimedia services, current research has gradually shifted from ensuring the transmission of secure data packets to improving the comfort and entertainment of vehicles. This requires the Internet of Vehicles not only to provide security, but also to provide passengers with non-safety information such as weather, parking lot locations, nearby stores or multimedia services. [0003] The MAC protocol of the Internet of Vehicles studies how vehicle nodes access the wireless channel. The MAC protoco...
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IPC IPC(8): H04W4/40H04W28/02H04W28/26H04L67/12
CPCH04W4/40H04W28/0289H04W28/26H04L67/12
Inventor 邓婷婷刘徐迅曾衍辉
Owner SOUTH CHINA UNIV OF TECH