Network node (111) and method therein for assisting a user equipment (130) to handle a connection in a wireless communication network (100) are disclosed. A first network node (111) and a second network node (112) operate in the wireless communication network (100). The first network node (111) is a serving network node for the user equipment (130). The first network node (111) determines that the user equipment (130) is under an idle mode coverage of the second network node (112) based on measurements associated to the user equipment (130). When a connected mode connection between the user equipment (130) and the first network node (111) is released, the first network node sends a context of the user equipment (130) to the second network node (112).