veins/modules/application/ieee80211p/ChannelAccess.h中的内容
时间: 2023-06-29 12:19:56 浏览: 50
Veins中的`ChannelAccess.h`头文件定义了`ChannelAccess`类,该类是用于控制车辆间通信信道的模块。具体内容如下:
```c++
class ChannelAccess : public cSimpleModule
{
public:
ChannelAccess();
virtual ~ChannelAccess();
virtual void initialize(int stage) override;
virtual void handleMessage(cMessage* msg) override;
virtual void finish() override;
virtual bool isChannelIdle() const;
virtual void sendToChannel(cMessage* msg);
virtual void setTxPower(double txPower_dBm);
virtual double getTxPower() const;
virtual double getFrequency() const;
virtual void setFrequency(double frequency);
virtual void setChannelNumber(int channel);
virtual int getChannelNumber() const;
virtual void setChannelSenseTime(double senseTime);
virtual double getChannelSenseTime() const;
virtual bool isChannelBusy() const;
virtual void channelStateChanged(IChannelState::State newState);
virtual void registerInterface(IChannelControl* interface);
virtual void unregisterInterface(IChannelControl* interface);
virtual void receiveSignal(cComponent* source, simsignal_t signalID, bool b, cObject* obj, cObject* details) override;
virtual void receiveSignal(cComponent* source, simsignal_t signalID, double d, cObject* obj, cObject* details) override;
private:
void updateChannelState();
void updateChannelState(IChannelState::State newState);
void changeChannelState(IChannelState::State newState);
bool isChannelIdle(double senseTime) const;
bool isChannelIdle(IChannelState::State newState) const;
bool isChannelBusy(IChannelState::State newState) const;
void handleUpperMsg(cMessage* msg);
void handleLowerMsg(cMessage* msg);
private:
std::vector<IChannelControl*> interfaces;
cMessage* channelMsg;
IChannelState* channelState;
double txPower_dBm;
int channel;
double frequency;
double channelSenseTime;
bool channelIdle;
};
```
其中,`ChannelAccess`类的主要成员包括以下内容:
- `initialize(int stage)`:初始化函数,用于初始化模块,包括一些参数的设置和初始化操作;
- `handleMessage(cMessage* msg)`:消息处理函数,用于处理来自其他模块的消息;
- `isChannelIdle()`:判断通信信道是否空闲;
- `sendToChannel(cMessage* msg)`:向通信信道发送消息;
- `setTxPower(double txPower_dBm)`:设置发送功率;
- `getTxPower()`:获取当前发送功率;
- `getFrequency()`:获取当前通信频率;
- `setFrequency(double frequency)`:设置通信频率;
- `setChannelNumber(int channel)`:设置通信信道号;
- `getChannelNumber()`:获取当前通信信道号;
- `setChannelSenseTime(double senseTime)`:设置信道感知时间;
- `getChannelSenseTime()`:获取当前信道感知时间;
- `isChannelBusy()`:判断通信信道是否忙碌;
- `channelStateChanged(IChannelState::State newState)`:通知所有注册的接口,通信信道状态已经改变;
- `registerInterface(IChannelControl* interface)`:注册通信接口;
- `unregisterInterface(IChannelControl* interface)`:注销通信接口;
- `receiveSignal(cComponent* source, simsignal_t signalID, bool b, cObject* obj, cObject* details)`:接收来自其他模块的信号;
- `receiveSignal(cComponent* source, simsignal_t signalID, double d, cObject* obj, cObject* details)`:接收来自其他模块的信号;
- `updateChannelState()`:更新通信信道状态;
- `updateChannelState(IChannelState::State newState)`:更新通信信道状态;
- `changeChannelState(IChannelState::State newState)`:改变通信信道状态;
- `isChannelIdle(double senseTime)`:判断通信信道是否空闲;
- `isChannelIdle(IChannelState::State newState)`:判断通信信道是否空闲;
- `isChannelBusy(IChannelState::State newState)`:判断通信信道是否忙碌;
- `handleUpperMsg(cMessage* msg)`:处理上层消息;
- `handleLowerMsg(cMessage* msg)`:处理下层消息。
通过使用`ChannelAccess`类,可以实现对车辆间通信信道的精细控制,包括设置通信频率、信道号、发送功率、感知时间等参数,以及发送和接收数据等操作。
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