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TDMA protocol prediction control method

A technology of predictive control and protocol, applied in access restriction, electrical components, wireless communication, etc., can solve problems such as poor communication effect

Active Publication Date: 2014-01-01
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0007] In order to overcome the shortcomings of poor communication effect of the existing TDMA protocol, the present invention provides a predictive control method of the TDMA protocol

Method used

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Embodiment Construction

[0049] refer to figure 1 -9 Describe the present invention in detail.

[0050] A predictive control method of a TDMA protocol, which is mainly composed of a feedforward control unit composed of a real-time queue predictor and a feedforward controller, and a feedback control unit composed of a congestion detector, a feedback controller and a time slot resource manager;

[0051] The admission control process implements three admission control methods of the predictive control method of the TDMA protocol, feedforward, feedback, and feedforward compensation feedback control.

[0052] The model is modeled and simulated using OPNET tools. The network model established by simulation consists of a base station and dozens of mobile stations. In the simulation, the channel data transmission rate is 30000bps, the simulation time is 12h, the length of the data packet generated by the node is 512bit, the traffic model generated by each base station obeys the exponential distribution, the...

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Abstract

The invention discloses a TDMA protocol prediction control method which is used for solving the technical problem that an existing TDMA protocol is poor in communication effect. The technical scheme is that feedforward and feedback are combined, the allowed arrival rate of a TDMA communication system is predicted based on a real-time queuing theory model to finish feedforward control, and then the accuracy for the feedforward model to model the complex real-time communication system is further corrected through feedback control. The method effectively avoids the problem of the flow peak value in a TDMA communication system, enables nodes to be joined up quickly and enables system communication to be more stable. Congestion control is dynamically carried out on a TDMA protocol, so that when congestion is detected and happens on communication nodes, time slot resource distribution of node data uses an admission control method to adopt or refuse new service. Thus, the transient flow peak value and network congestion are effectively avoided. The TDMA protocol prediction control method enables the nodes to be joined up quickly, so that the utilization rate of communication resources is higher.

Description

technical field [0001] The invention relates to a predictive control method of TTDMA protocol. Background technique [0002] In the real-time communication environment, due to the unstable or unpredictable scale of the base station and the mobile station, that is, the mobile station frequently enters and exits the network, and the amount of information sent changes suddenly, dynamic TDMA admission control is more attractive. The protocol can real-time reallocate time slot resources according to changes in user signal transmission requirements in complex networks, and has the characteristics of flexible control and high utilization of time slot resources. [0003] Document 1 "Research and Implementation of Dynamic TDMA Resource Allocation Method. Yan Zhong et al. Mobile Communications, 2010 (6): 41-44" discloses a dynamic TDMA protocol based on mini-slots. In this method, without interrupting the network operation, each node applies for a time slot according to the actual si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/06H04W24/06
Inventor 杨坤德韩一娜马远良
Owner NORTHWESTERN POLYTECHNICAL UNIV
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