公开(公告)号：EP2870823B1

公开(公告)日：2016-06-29

申请号：EP12733109.8

申请日：2012-07-05

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： CHENGUANG, Lu ,  BERG, Miguel ,  BERGQVIST, Ralf ,  ERIKSSON, Per-Erik ,  ÖSTERLING, Jacob ,  TROJER, Elmar

IPC分类号： H04W24/02 ,  H04W84/04 ,  H04W88/08

CPC分类号： H04W72/085 ,  H04B1/0071 ,  H04B3/487 ,  H04W16/10 ,  H04W16/32 ,  H04W24/02 ,  H04W72/0453 ,  H04W84/045 ,  H04W88/085

摘要： A first network node of a cellular system is configured for communication with a second network node over a twisted pair wire. The first network node includes a receiver for receiving, over the twisted pair wire, an intermediate frequency signal from the second network node, which intermediate frequency signal has been converted from a high frequency signal having a frequency higher than the frequency of the intermediate frequency signal by the second network node, and a down-converter for converting the intermediate frequency signal to a low frequency signal having a frequency lower than the frequency of the intermediate frequency signal. The first network node also includes an up-converter for converting a received low frequency signal to an intermediate frequency signal having a frequency higher than the frequency of the low frequency signal.