OMNET++：如何获取无线信号功率？

我正在使用新发布的 OMNET++ 的 INET 4.0 框架，我想获取无线主机（AdhocHost 类型）中接收到的信号强度值。我该怎么做呢？

In INET4.0.0 模块收到的数据包包含几个tags。其他人之间有SignalPowerInd标签。根据信号标签.msg:

该指示指定在接收数据包期间检测到的平均模拟信号功率。 它可能存在于从物理层到应用程序的数据包上。

This tag is present in packet processing by a wireless MAC layer, for example:

应用层收到的数据包包含SignalPowerInd too:

---

One can obtain the value of `SignalPowerInd` from received radio packet in any layer using standard API. For example, to obtain it in `UdpBasicApp` one should add in `UdpBasicApp.cc`:

#include "inet/physicallayer/common/packetlevel/SignalTag_m.h"
// ...

void UdpBasicApp::socketDataArrived(UdpSocket *socket, Packet *packet) {

   if (packet->findTag<SignalPowerInd>() != nullptr) {
       auto signalPowerInd = packet->getTag<SignalPowerInd>();
       auto rxPower = signalPowerInd->getPower().get();
       EV_INFO << "RX power= " << rxPower << "W" << endl;
   } 

   // process incoming packet
   processPacket(packet);
}