epc-enb-s1-sap.h

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/*
 * Copyright (c) 2012 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)
 *
 * 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: Nicola Baldo <nbaldo@cttc.es>
 */
 
#ifndef EPC_ENB_S1_SAP_H
#define EPC_ENB_S1_SAP_H
 
#include <ns3/eps-bearer.h>
#include <ns3/ipv4-address.h>
 
#include <list>
 
namespace ns3
{
 
class EpcEnbS1SapProvider
{
  public:
    virtual ~EpcEnbS1SapProvider();
 
    virtual void InitialUeMessage(uint64_t imsi, uint16_t rnti) = 0;
 
    virtual void DoSendReleaseIndication(uint64_t imsi, uint16_t rnti, uint8_t bearerId) = 0;
 
    struct BearerToBeSwitched
    {
        uint8_t epsBearerId; 
        uint32_t teid;       
    };
 
    struct PathSwitchRequestParameters
    {
        uint16_t rnti;      
        uint16_t cellId;    
        uint32_t mmeUeS1Id; 
        std::list<BearerToBeSwitched> bearersToBeSwitched; 
    };
 
    virtual void PathSwitchRequest(PathSwitchRequestParameters params) = 0;
 
    virtual void UeContextRelease(uint16_t rnti) = 0;
};
 
class EpcEnbS1SapUser
{
  public:
    virtual ~EpcEnbS1SapUser();
 
    struct InitialContextSetupRequestParameters
    {
        uint16_t rnti; 
    };
 
    virtual void InitialContextSetupRequest(InitialContextSetupRequestParameters params) = 0;
 
    struct DataRadioBearerSetupRequestParameters
    {
        uint16_t rnti;    
        EpsBearer bearer; 
        uint8_t bearerId; 
        uint32_t gtpTeid; 
        Ipv4Address transportLayerAddress; 
    };
 
    virtual void DataRadioBearerSetupRequest(DataRadioBearerSetupRequestParameters params) = 0;
 
    struct PathSwitchRequestAcknowledgeParameters
    {
        uint16_t rnti; 
    };
 
    virtual void PathSwitchRequestAcknowledge(PathSwitchRequestAcknowledgeParameters params) = 0;
};
 
template <class C>
class MemberEpcEnbS1SapProvider : public EpcEnbS1SapProvider
{
  public:
    MemberEpcEnbS1SapProvider(C* owner);
 
    // Delete default constructor to avoid misuse
    MemberEpcEnbS1SapProvider() = delete;
 
    // inherited from EpcEnbS1SapProvider
    void InitialUeMessage(uint64_t imsi, uint16_t rnti) override;
    void DoSendReleaseIndication(uint64_t imsi, uint16_t rnti, uint8_t bearerId) override;
 
    void PathSwitchRequest(PathSwitchRequestParameters params) override;
    void UeContextRelease(uint16_t rnti) override;
 
  private:
    C* m_owner; 
};
 
template <class C>
MemberEpcEnbS1SapProvider<C>::MemberEpcEnbS1SapProvider(C* owner)
    : m_owner(owner)
{
}
 
template <class C>
void
MemberEpcEnbS1SapProvider<C>::InitialUeMessage(uint64_t imsi, uint16_t rnti)
{
    m_owner->DoInitialUeMessage(imsi, rnti);
}
 
template <class C>
void
MemberEpcEnbS1SapProvider<C>::DoSendReleaseIndication(uint64_t imsi,
                                                      uint16_t rnti,
                                                      uint8_t bearerId)
{
    m_owner->DoReleaseIndication(imsi, rnti, bearerId);
}
 
template <class C>
void
MemberEpcEnbS1SapProvider<C>::PathSwitchRequest(PathSwitchRequestParameters params)
{
    m_owner->DoPathSwitchRequest(params);
}
 
template <class C>
void
MemberEpcEnbS1SapProvider<C>::UeContextRelease(uint16_t rnti)
{
    m_owner->DoUeContextRelease(rnti);
}
 
template <class C>
class MemberEpcEnbS1SapUser : public EpcEnbS1SapUser
{
  public:
    MemberEpcEnbS1SapUser(C* owner);
 
    // Delete default constructor to avoid misuse
    MemberEpcEnbS1SapUser() = delete;
 
    // inherited from EpcEnbS1SapUser
    void InitialContextSetupRequest(InitialContextSetupRequestParameters params) override;
    void DataRadioBearerSetupRequest(DataRadioBearerSetupRequestParameters params) override;
    void PathSwitchRequestAcknowledge(PathSwitchRequestAcknowledgeParameters params) override;
 
  private:
    C* m_owner; 
};
 
template <class C>
MemberEpcEnbS1SapUser<C>::MemberEpcEnbS1SapUser(C* owner)
    : m_owner(owner)
{
}
 
template <class C>
void
MemberEpcEnbS1SapUser<C>::InitialContextSetupRequest(InitialContextSetupRequestParameters params)
{
    m_owner->DoInitialContextSetupRequest(params);
}
 
template <class C>
void
MemberEpcEnbS1SapUser<C>::DataRadioBearerSetupRequest(DataRadioBearerSetupRequestParameters params)
{
    m_owner->DoDataRadioBearerSetupRequest(params);
}
 
template <class C>
void
MemberEpcEnbS1SapUser<C>::PathSwitchRequestAcknowledge(
    PathSwitchRequestAcknowledgeParameters params)
{
    m_owner->DoPathSwitchRequestAcknowledge(params);
}
 
} // namespace ns3
 
#endif // EPC_ENB_S1_SAP_H