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A multi-priority multi-channel media access control method based on channel awareness

A medium access control, multi-priority technology, applied in the field of communication, can solve the problems of unstable channel quality, affecting the timeliness, reliability and transmission delay of information transmission, achieve high reliability QoS guarantee, avoid network The effect of congestion and low latency

Active Publication Date: 2021-04-23
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The Media Access Control (MAC) protocol is one of the key technologies of the UAV Ad Hoc Network. It mainly solves the problem of how to efficiently share the communication channel between multiple UAVs, and is the main factor that determines the delay of information transmission. However, there are problems such as large transmission delay and unstable channel quality in UAV ad hoc networks, which affect the timeliness and reliability of information transmission, and put forward higher requirements for the MAC protocol.

Method used

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  • A multi-priority multi-channel media access control method based on channel awareness
  • A multi-priority multi-channel media access control method based on channel awareness
  • A multi-priority multi-channel media access control method based on channel awareness

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0034] figure 1 It is the framework of multi-priority multi-channel MAC method based on channel state awareness. The figure includes four parts: multi-priority multi-queue scheduling mechanism, call admission control mechanism, backoff algorithm, and multi-channel dynamic allocation model.

[0035] The multi-priority multi-queue scheduling mechanism is to set M queues in the node, and each queue can be inserted into a priority group of a level, that is, the queue with priority 1 is inserted into the queue with sequence number 1, and the queue with priority 2 is inserted In the queue with sequence number 2.

[0036] figure 2 is the state transition diagram of the method, and all nodes in the network work according to this state transition strategy. The specific state transition process can be described as:

[0037] 1) The node starts fr...

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Abstract

The invention discloses a multi-priority multi-channel media access control method based on channel perception, which divides N channels into Γ dynamic reserved channels and N-Γ fixed shared channels, and the fixed shared channels are composed of all different priorities. The groups are shared equally, and the dynamic reserved channel is the number of channels reserved for each group with different priorities according to the following formula: Among them, m is the priority level of the current group, M is the total number of priority levels, λ T Indicates the arrival rate of the total packet, λ m Indicates the arrival rate of the current priority group. The invention can not only ensure sufficient channel resources for high-priority services, but also effectively improve the overall channel utilization rate.

Description

technical field [0001] The invention belongs to the technical field of communication, relates to a communication networking method of an unmanned aerial vehicle ad hoc network, and proposes a multi-priority multi-channel media access control method (Multi-Priority Multi-Channel Media Access Control, MPMC_MAC). [0002] technical background [0003] UAV self-organizing network adopts mobile Ad Hoc network (Mobile Ad Hoc Network, MANET) as the main network architecture. The networked cooperative combat capability of various aircraft has become one of the important development directions of the military aviation communication network in the future. The Media Access Control (MAC) protocol is one of the key technologies of the UAV Ad Hoc Network. It mainly solves the problem of how to efficiently share the communication channel between multiple UAVs, and is the main factor that determines the delay of information transmission. However, there are problems such as large transmissi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/10H04W16/12H04W36/00H04W36/26
CPCH04W16/10H04W16/12H04W36/0011H04W36/005H04W36/26
Inventor 仇启明方正薛晓亮
Owner CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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