An error occurred while collecting items to be installed
session context was:(profile=SDKProfile, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
Unable to read repository at http://public.dhe.ibm.com/ibmdl/export/pub/software/mobile-solutions/worklight/wdeupdate/plugins/com.ibm.imp.worklight.simulation.ui_6.1.0.00-20131219-1900.jar.
Read timed out
如何解决此错误？