attach ue to enb in lena-simple-epc

[Pengfei Li]

My experiment is as followed

1.  change the way UEs are attached to eNBs from

  

for (uint16_t i = 0; i < numberOfNodes; i++)

       {

        lteHelper->Attach (ueLteDevs.Get(i), enbLteDevs.Get(i));

         // side effect: the default EPS bearer will be activated

       }

     to 

 lteHelper->Attach (ueLteDevs.Get(0), enbLteDevs.Get(1));

               that is, there is just one ue 

           2. use LteRrcProtocolReal

           3. other parameters are default

excute  NS_LOG="PacketSink=level_info|*" ./waf --run "lena-simple-epc -simTime=2"

 

1.0.0.2 is the ip of remotehost, and 7.0.0.2 is the ip of UE. We can see the number of  packets on uplink is much more than that on downlink, why? 

I know when I attach UE0 to eNB1, I change the distance in the mobility model. Is it related to the result?

(forgive my poor english)