Question

我在VACaMobil中遇到TCP问题。我正在使用在Inet中构建的两个TCP模块：TCPBasicClientApp和TCPEchoApp。前者作为客户端，前者作为服务器。

模拟中的汽车数量（模块名称为“coche”）为100，并且有五个并发传输：

CLIENT    SERVER
Car 0 --> Car 99
Car 1 --> Car 98
Car 2 --> Car 97
Car 3 --> Car 96
Car 4 --> Car 95

我也使用三种路由协议：AODV，DYMO和OLSR。但是，无论我运行什么配置，模拟中的错误如下：

Error in module (TCPBasicClientApp) Highway.coche[*].tcpApp[0] (id = 35) at event #49519, t = 166: IPvXAddressResolver: module 'coche[98]' not found.

在这种情况下，使用AODV，汽车1无法与汽车98通信。我了解到VACaMobil在一段时间后删除了一些汽车，同时创造了超过100的汽车，例如“coche [110]”，“coche [115]”等

我不明白为什么它一直在删除和创建节点;我认为VACaMobil确实产生了一定数量的车辆。

我该如何解决这个问题？任何帮助表示赞赏。

这是omnetpp.ini：

[General]

network = Highway

debug-on-errors = false

cmdenv-express-mode = true
cmdenv-autoflush = true
cmdenv-status-frequency = 10000000s
#repeat = 10
tkenv-plugin-path = ../../../etc/plugins
tkenv-image-path = bitmaps

check-signals = true

**.manager.**.scalar-recording = true
**.manager.**.vector-recording = true
**.manetrouting.**.scalar-recording = true
**.movStats.**.scalar-recording = true
**.movStats.**.vector-recording = true
**.mac.**.scalar-recording = true
**.mac.**.vector-recording = true
**.scalar-recording = true
**.vector-recording = true

#ChannelControl
*.channelControl.carrierFrequency = 2.4GHz
*.channelControl.pMax = 2mW
*.channelControl.sat = -110dBm
*.channelControl.alpha = 2
*.channelControl.numChannels = 1

# TraCIScenarioManagerLaunchd
*.manager.updateInterval = 1s
*.manager.host = "localhost"
*.manager.port = 9999
*.manager.moduleType = "rcdp9.TAdhocHost"
*.manager.moduleName = "coche"
*.manager.moduleDisplayString = ""
*.manager.autoShutdown = true
*.manager.margin = 25
*.manager.warmUpSeconds = 0
*.manager.launchConfig = xmldoc("VACaMobil/Milan/downtown.launch.xml")
*.manager.getStatistics = true
*.manager.statFiles = "${resultdir}/${configname}-${runnumber}-"

# nic settings
**.wlan[*].bitrate = 24Mbps
**.wlan[*].opMode = "g"
**.wlan[*].mgmt.frameCapacity = 10
**.wlan[*].mgmtType = "Ieee80211MgmtAdhoc"
**.wlan[*].mac.basicBitrate = 24Mbps
**.wlan[*].mac.controlBitrate = 24Mbps
**.wlan[*].mac.address = "auto"
**.wlan[*].mac.maxQueueSize = 14
**.wlan[*].mac.rtsThresholdBytes = 3000B
**.wlan[*].mac.retryLimit = 7
**.wlan[*].mac.cwMinData = 7
**.wlan[*].radio.transmitterPower = 2mW
**.wlan[*].radio.thermalNoise = -110dBm
**.wlan[*].radio.sensitivity = -85dBm
**.wlan[*].radio.pathLossAlpha = 2
**.wlan[*].radio.snirThreshold = 4dB

**.channelNumber = 0

**.coche.networkLayer.configurator.networkConfiguratorModule = "configurator"

# manet routing
**.routingProtocol = ${"AODVUU", "DYMO", "OLSR"}

**.tcpAlgorithmClass = "TCPNewReno"

**.coche[0..4].numTcpApps = 1
**.coche[0..4].tcpApp[*].typename = "TCPBasicClientApp"
**.coche[0..4].tcpApp[*].localPort = -1
**.coche[0..4].tcpApp[*].connectPort = 1000
**.coche[0..4].tcpApp[*].dataTransferMode = "bytecount"
**.coche[0..4].tcpApp[*].startTime = 10s
**.coche[0..4].tcpApp[*].thinkTime = 1s
**.coche[0..4].tcpApp[*].idleInterval = 3s
**.coche[0..4].tcpApp[*].requestLength = 5000000B

**.coche[5..94].numTcpApps = 0

**.coche[95..99].numTcpApps = 1
**.coche[95..99].tcpApp[*].typename = "TCPEchoApp"
**.coche[95..99].tcpApp[*].localPort = 1000
**.coche[95..99].tcpApp[*].dataTransferMode = "bytecount"

**.coche[0].tcpApp[*].connectAddress = "coche[99]"
**.coche[1].tcpApp[*].connectAddress = "coche[98]"
**.coche[2].tcpApp[*].connectAddress = "coche[97]"
**.coche[3].tcpApp[*].connectAddress = "coche[96]"
**.coche[4].tcpApp[*].connectAddress = "coche[95]"

**.meanNumberOfCars = 100
**.autoShutdown = false

这是TAdhocHost.ned：

package rcdp9;

import inet.networklayer.IManetRouting;
import inet.networklayer.autorouting.ipv4.HostAutoConfigurator2;
import inet.nodes.inet.AdhocHost;

module TAdhocHost extends AdhocHost
{
    parameters:
        @display("i=device/cellphone");
        mobilityType = default("TraCIMobility");
        IPForward = true;
    submodules:
        ac_wlan: HostAutoConfigurator2 {
          @display("p=127,240");
        }
    connections:
}

这是Highway.ned：

package rcdp9;

import inet.world.VACaMobil.VACaMobil;
import inet.networklayer.autorouting.ipv4.IPv4NetworkConfigurator;
import inet.networklayer.autorouting.ipv4.HostAutoConfigurator;
import inet.nodes.inet.AdhocHost;
import inet.world.radio.ChannelControl;
import inet.world.traci.TraCIScenarioManagerLaunchd;

network Highway
{
    submodules:
        configurator: IPv4NetworkConfigurator {
            @display("p=396,221");
        }
        channelControl: ChannelControl {
            @display("p=396,310");
        }
        manager: VACaMobil {
            @display("p=322,405");
        }
    connections allowunconnected:
}

Answer 1

根据我的理解，VACaMobil建立在静脉上。

Veins为每辆开始驾驶的车辆创建一个新的网络节点。当相应的车辆停止行驶（到达目的地）时，静脉删除网络节点。它永远不会重复使用相同的节点索引。

因此，在您的示例中，开始驾驶的第一辆车将是coche[0]。下一辆开始驾驶的车辆将coche[1] - 与coche[0]是否已经到达或仍在驾驶无关。

VACaMobil中的TCP问题

1 个答案: