1 /* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
2 /*
3 * Copyright (c) 2011-2019 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation;
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 * Author: Jaume Nin <jnin@cttc.es>
19 * Nicola Baldo <nbaldo@cttc.es>
20 * Manuel Requena <manuel.requena@cttc.es>
21 * (most of the code refactored to no-backhaul-epc-helper.cc)
22 */
23
24 #include "ns3/boolean.h"
25 #include "ns3/string.h"
26 #include "ns3/log.h"
27 #include "ns3/point-to-point-helper.h"
28
29 #include "ns3/point-to-point-epc-helper.h"
30
31 namespace ns3 {
32
33 NS_LOG_COMPONENT_DEFINE ("PointToPointEpcHelper");
34
35 NS_OBJECT_ENSURE_REGISTERED (PointToPointEpcHelper);
36
37
PointToPointEpcHelper()38 PointToPointEpcHelper::PointToPointEpcHelper ()
39 : NoBackhaulEpcHelper ()
40 {
41 NS_LOG_FUNCTION (this);
42 // To access the attribute value within the constructor
43 ObjectBase::ConstructSelf (AttributeConstructionList ());
44
45 // since we use point-to-point links for the backhaul links,
46 // we use a /30 subnet which can hold exactly two addresses
47 // (remember that net broadcast and null address are not valid)
48 m_s1uIpv4AddressHelper.SetBase ("10.0.0.0", "255.255.255.252");
49 m_s1apIpv4AddressHelper.SetBase ("11.0.0.0", "255.255.255.252");
50 }
51
~PointToPointEpcHelper()52 PointToPointEpcHelper::~PointToPointEpcHelper ()
53 {
54 NS_LOG_FUNCTION (this);
55 }
56
57 TypeId
GetTypeId(void)58 PointToPointEpcHelper::GetTypeId (void)
59 {
60 NS_LOG_FUNCTION_NOARGS ();
61 static TypeId tid = TypeId ("ns3::PointToPointEpcHelper")
62 .SetParent<NoBackhaulEpcHelper> ()
63 .SetGroupName ("Lte")
64 .AddConstructor<PointToPointEpcHelper> ()
65 .AddAttribute ("S1uLinkDataRate",
66 "The data rate to be used for the next S1-U link to be created",
67 DataRateValue (DataRate ("10Gb/s")),
68 MakeDataRateAccessor (&PointToPointEpcHelper::m_s1uLinkDataRate),
69 MakeDataRateChecker ())
70 .AddAttribute ("S1uLinkDelay",
71 "The delay to be used for the next S1-U link to be created",
72 TimeValue (Seconds (0)),
73 MakeTimeAccessor (&PointToPointEpcHelper::m_s1uLinkDelay),
74 MakeTimeChecker ())
75 .AddAttribute ("S1uLinkMtu",
76 "The MTU of the next S1-U link to be created. Note that, because of the additional GTP/UDP/IP tunneling overhead, you need a MTU larger than the end-to-end MTU that you want to support.",
77 UintegerValue (2000),
78 MakeUintegerAccessor (&PointToPointEpcHelper::m_s1uLinkMtu),
79 MakeUintegerChecker<uint16_t> ())
80 .AddAttribute ("S1uLinkPcapPrefix",
81 "Prefix for Pcap generated by S1-U link",
82 StringValue ("s1u"),
83 MakeStringAccessor (&PointToPointEpcHelper::m_s1uLinkPcapPrefix),
84 MakeStringChecker ())
85 .AddAttribute ("S1uLinkEnablePcap",
86 "Enable Pcap for X2 link",
87 BooleanValue (false),
88 MakeBooleanAccessor (&PointToPointEpcHelper::m_s1uLinkEnablePcap),
89 MakeBooleanChecker ())
90 ;
91 return tid;
92 }
93
94 TypeId
GetInstanceTypeId() const95 PointToPointEpcHelper::GetInstanceTypeId () const
96 {
97 return GetTypeId ();
98 }
99
100 void
DoDispose()101 PointToPointEpcHelper::DoDispose ()
102 {
103 NS_LOG_FUNCTION (this);
104 NoBackhaulEpcHelper::DoDispose ();
105 }
106
107
108 void
AddEnb(Ptr<Node> enb,Ptr<NetDevice> lteEnbNetDevice,uint16_t cellId)109 PointToPointEpcHelper::AddEnb (Ptr<Node> enb, Ptr<NetDevice> lteEnbNetDevice, uint16_t cellId)
110 {
111 NS_LOG_FUNCTION (this << enb << lteEnbNetDevice << cellId);
112
113 NoBackhaulEpcHelper::AddEnb (enb, lteEnbNetDevice, cellId);
114
115 // create a point to point link between the eNB and the SGW with
116 // the corresponding new NetDevices on each side
117 Ptr<Node> sgw = GetSgwNode ();
118
119 PointToPointHelper p2ph;
120 p2ph.SetDeviceAttribute ("DataRate", DataRateValue (m_s1uLinkDataRate));
121 p2ph.SetDeviceAttribute ("Mtu", UintegerValue (m_s1uLinkMtu));
122 p2ph.SetChannelAttribute ("Delay", TimeValue (m_s1uLinkDelay));
123 NetDeviceContainer enbSgwDevices = p2ph.Install (enb, sgw);
124 NS_LOG_LOGIC ("Ipv4 ifaces of the eNB after installing p2p dev: " << enb->GetObject<Ipv4> ()->GetNInterfaces ());
125
126 if (m_s1uLinkEnablePcap)
127 {
128 p2ph.EnablePcapAll (m_s1uLinkPcapPrefix);
129 }
130
131 m_s1uIpv4AddressHelper.NewNetwork ();
132 Ipv4InterfaceContainer enbSgwIpIfaces = m_s1uIpv4AddressHelper.Assign (enbSgwDevices);
133 NS_LOG_LOGIC ("number of Ipv4 ifaces of the eNB after assigning Ipv4 addr to S1 dev: " << enb->GetObject<Ipv4> ()->GetNInterfaces ());
134
135 Ipv4Address enbS1uAddress = enbSgwIpIfaces.GetAddress (0);
136 Ipv4Address sgwS1uAddress = enbSgwIpIfaces.GetAddress (1);
137
138 NoBackhaulEpcHelper::AddS1Interface (enb, enbS1uAddress, sgwS1uAddress, cellId);
139 }
140
141 } // namespace ns3
142