Drawing red wireless link between serving eNB and UE in LTE with NetAnim

[William]

Hi, members.

I am looking for the way to draw red wireless link between serving eNB and UE in NetAnim 3.106. When UE is attached to serving eNB, red wireless link has been drawn by NetAnim. and then when handover is performed to new serving eNB, this red wireless link must be changed to new serving eNB in a run time. I do not find the way to edit the XML file generated during simulation around the <link> element.

Can you give me the right way to resolve this problem? 

Thanks in advance.

BR

William

[William]

I hope to get red dash line between them.

[John Abraham]

There is no API for such things. 

But NetAnim can be directly edited to draw lines. You would need knowledge of Qt.

Adding the following snippet in dispatchEvents in animatormode.cpp after  the line m_qLcdNumber->display (m_currentTime);

      static QGraphicsLineItem * line = 0;

      if (!line && m_currentTime > 0)

        {

          AnimNode * a = AnimNodeMgr::getInstance()->getNode(0);

          AnimNode * b = AnimNodeMgr::getInstance()->getNode(1);

          line = AnimatorScene::getInstance()->addLine(a->x(), a->y(),b->x(),b->y());

          QPen p;

          p.setColor(QColor(Qt::red));          

          line->setPen(p);

        }

      if (line && m_currentTime > 6)

        {

          line->setVisible(false);

        }

draws a red-line between node 0 and node 1 if the current time is > 0 and hides it if the current time > 6 

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[William]

Thank you for your quick comments.

There are many UEs and eNBs. Moreover UEs move around quickly. The red dash line you commented between eNBs and UEs should chase UE mobility and add/remove repeatedly. How to remove the added previous line? I cannot find method about removing this line selectively...

BR

On Wednesday, November 18, 2015 at 11:43:19 PM UTC+9, William wrote:

[John Abraham]

Well as an example I put  static QGraphicsLineItem * line = 0;

ideally you need to maintain a collection of such lines. (say a vector of QGraphicsLineItem *)

You should change the x, y co-ordinates of the line whenever needed

http://doc.qt.io/qt-4.8/qgraphicslineitem.html#setLine-2

void QGraphicsLineItem::setLine(qreal x1, qreal y1, qreal x2, qreal y2)

[William]

Thanks....It looks like I need to study QT. ^^ I will try....