satellite-lora-phy-rx.cc

Go to the documentation of this file.

/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2017 University of Padova
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Davide Magrin <magrinda@dei.unipd.it>
 */
 
#include "satellite-lora-phy-rx.h"
 
#include "ns3/log.h"
 
namespace ns3
{
 
NS_LOG_COMPONENT_DEFINE("SatLoraPhyRx");
 
NS_OBJECT_ENSURE_REGISTERED(SatLoraPhyRx);
 
TypeId
SatLoraPhyRx::GetTypeId(void)
{
    static TypeId tid = TypeId("ns3::SatLoraPhyRx").SetParent<SatPhyRx>();
    return tid;
}
 
SatLoraPhyRx::SatLoraPhyRx()
    : m_state(SLEEP)
{
}
 
SatLoraPhyRx::~SatLoraPhyRx()
{
}
 
void
SatLoraPhyRx::StartRx(Ptr<SatSignalParameters> rxParams)
{
    NS_LOG_FUNCTION(this);
 
    // Switch on the current PHY state
    switch (m_state)
    {
    // In the SLEEP, TX and RX cases we cannot receive the packet: we only add
    // it to the list of interferers and do not schedule an EndReceive event for
    // it.
    case SLEEP: {
        NS_LOG_INFO("Dropping packet because device is in SLEEP state");
        break;
    }
    case TX: {
        NS_LOG_INFO("Dropping packet because device is in TX state");
        break;
    }
    case RX: {
        NS_LOG_INFO("Dropping packet because device is already in RX state");
        break;
    }
    // If we are in STANDBY mode, we can potentially lock on the currently
    // incoming transmission
    case STANDBY: {
        SatPhyRx::StartRx(rxParams);
        break;
    }
    }
}
 
bool
SatLoraPhyRx::IsTransmitting(void)
{
    return true;
}
 
bool
SatLoraPhyRx::IsOnFrequency(double frequency)
{
    return m_frequency == frequency;
}
 
void
SatLoraPhyRx::SetFrequency(double frequencyMHz)
{
    m_frequency = frequencyMHz;
}
 
void
SatLoraPhyRx::SetSpreadingFactor(uint8_t sf)
{
    m_sf = sf;
}
 
SatLoraPhyRx::State
SatLoraPhyRx::GetState()
{
    return m_state;
}
 
void
SatLoraPhyRx::SwitchToStandby(void)
{
    NS_LOG_FUNCTION_NOARGS();
 
    m_state = STANDBY;
}
 
void
SatLoraPhyRx::SwitchToRx(void)
{
    NS_LOG_FUNCTION_NOARGS();
 
    NS_ASSERT(m_state == STANDBY);
 
    m_state = RX;
}
 
void
SatLoraPhyRx::SwitchToTx()
{
    NS_LOG_FUNCTION_NOARGS();
 
    NS_ASSERT(m_state != RX);
 
    m_state = TX;
}
 
void
SatLoraPhyRx::SwitchToSleep(void)
{
    NS_LOG_FUNCTION_NOARGS();
 
    NS_ASSERT(m_state == STANDBY);
 
    m_state = SLEEP;
}
 
} // namespace ns3