Performance Analysis Of SHUMA Protocol And Its Application In Data Link

MAC link layer multiple access protocol of wireless channel between the user and the signal dimension is divided into different channels assigned to the user,is generally in accordance with the time axis,the frequency axis or shaft of the signal space dimension code word is divided into orthogonal or non-orthogonal to the user channel,including the following three kinds: TDMA,FDMA,CDMA;FDMA(Frequency Division Multiple Address,FDMA)is the carrier frequency division signal transmission to establish multiple access;TDMA(Time Division Multiple Address,TDMA)is a division of transmission signal has different time to build multiple access CDMA(Code;Division Multiple Address,CDMA)to distinguish different transmission signal code to create multiple access.The main access technology of Tactical data link is time-division multiple access(TDMA),modern battlefield environment is very complex,because of TDMA'S good anti-jamming,anti-interception ability,and the flexible network topology,it can be well adapted to the modern battlefield,TDMA includes fixed access method and contention access method,the main purpose of this paper is to study the stochastic unified multiple access protocol(SHUMA)based on TDMA in contention access mode,which simplifies the complicated network design phase,while reducing the burden during the operation of network management.This paper shows the TDMA time slot partition,the time is divided into units,including time element,time frame,time slot;each time slot is occupied by a specific unit,which in this time slot sends a message,it can avoid the conflict of the network,improve the spectrum utilization.This paper further illustrates Shuma protocol slot allocation,and protocol operation process,and through comparision with fixed time slot allocation(DA)and contention slot allocation(CA)which have been deployed in the Link-16.,this paper shows the superiority of Shuma protocol performance in the network throughput,transmission delay and slot utilization rate higher.This paper uses Mathematica software to implement three protocols of mathematical analysis,by comparison we get the comparative performance through various directly graphics,then through the use of network simulation software OPENT,this paper models a data link simulation model,implements the TDMA access protocol in process domain process,and then carries out the simulation.Through the analysis of the simulation results,this paper verifies the superiority of Shuma protocol performance.