nr-epc-gnb-s1-sap.h

// Copyright (c) 2012 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)
//
// SPDX-License-Identifier: GPL-2.0-only
//
// Author: Nicola Baldo <nbaldo@cttc.es>
 
#ifndef NR_EPC_GNB_S1_SAP_H
#define NR_EPC_GNB_S1_SAP_H
 
#include "nr-eps-bearer.h"
 
#include "ns3/ipv4-address.h"
 
#include <list>
 
namespace ns3
{
 
class NrEpcGnbS1SapProvider
{
  public:
    virtual ~NrEpcGnbS1SapProvider() = default;
 
    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 NrEpcGnbS1SapUser
{
  public:
    virtual ~NrEpcGnbS1SapUser() = default;
 
    struct InitialContextSetupRequestParameters
    {
        uint16_t rnti; 
    };
 
    virtual void InitialContextSetupRequest(InitialContextSetupRequestParameters params) = 0;
 
    struct DataRadioBearerSetupRequestParameters
    {
        uint16_t rnti;      
        NrEpsBearer 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 NrMemberEpcGnbS1SapProvider : public NrEpcGnbS1SapProvider
{
  public:
    NrMemberEpcGnbS1SapProvider(C* owner);
 
    // Delete default constructor to avoid misuse
    NrMemberEpcGnbS1SapProvider() = delete;
 
    // inherited from NrEpcGnbS1SapProvider
    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>
NrMemberEpcGnbS1SapProvider<C>::NrMemberEpcGnbS1SapProvider(C* owner)
    : m_owner(owner)
{
}
 
template <class C>
void
NrMemberEpcGnbS1SapProvider<C>::InitialUeMessage(uint64_t imsi, uint16_t rnti)
{
    m_owner->DoInitialUeMessage(imsi, rnti);
}
 
template <class C>
void
NrMemberEpcGnbS1SapProvider<C>::DoSendReleaseIndication(uint64_t imsi,
                                                        uint16_t rnti,
                                                        uint8_t bearerId)
{
    m_owner->DoReleaseIndication(imsi, rnti, bearerId);
}
 
template <class C>
void
NrMemberEpcGnbS1SapProvider<C>::PathSwitchRequest(PathSwitchRequestParameters params)
{
    m_owner->DoPathSwitchRequest(params);
}
 
template <class C>
void
NrMemberEpcGnbS1SapProvider<C>::UeContextRelease(uint16_t rnti)
{
    m_owner->DoUeContextRelease(rnti);
}
 
template <class C>
class NrMemberEpcGnbS1SapUser : public NrEpcGnbS1SapUser
{
  public:
    NrMemberEpcGnbS1SapUser(C* owner);
 
    // Delete default constructor to avoid misuse
    NrMemberEpcGnbS1SapUser() = delete;
 
    // inherited from NrEpcGnbS1SapUser
    void InitialContextSetupRequest(InitialContextSetupRequestParameters params) override;
    void DataRadioBearerSetupRequest(DataRadioBearerSetupRequestParameters params) override;
    void PathSwitchRequestAcknowledge(PathSwitchRequestAcknowledgeParameters params) override;
 
  private:
    C* m_owner; 
};
 
template <class C>
NrMemberEpcGnbS1SapUser<C>::NrMemberEpcGnbS1SapUser(C* owner)
    : m_owner(owner)
{
}
 
template <class C>
void
NrMemberEpcGnbS1SapUser<C>::InitialContextSetupRequest(InitialContextSetupRequestParameters params)
{
    m_owner->DoInitialContextSetupRequest(params);
}
 
template <class C>
void
NrMemberEpcGnbS1SapUser<C>::DataRadioBearerSetupRequest(
    DataRadioBearerSetupRequestParameters params)
{
    m_owner->DoDataRadioBearerSetupRequest(params);
}
 
template <class C>
void
NrMemberEpcGnbS1SapUser<C>::PathSwitchRequestAcknowledge(
    PathSwitchRequestAcknowledgeParameters params)
{
    m_owner->DoPathSwitchRequestAcknowledge(params);
}
 
} // namespace ns3
 
#endif // NR_EPC_GNB_S1_SAP_H