a technique for relocating a serving gateway associated to a user equipment is described . one method implementation of this technique is performed in a mobility management entity , mme , and comprises the steps of a ) triggering , from the mme , a relocation of a source sgw to a target sgw by sending a create session request message to the target sgw , b ) receiving , from the target sgw , a create session response message including s1 general packet radio service , gprs , tunnelling protocol , gtp , endpoints of the target sgw , c ) updating , from the mme to an evolved nodeb , enb , an internet protocol , ip , address and a tunnel endpoint identifier , teid , of the target sgw , and d ) sending , from the mme to the source sgw , a delete session request to delete a session .