Group calling establishing method, group information sending method, corresponding user equipment (UE) and network element

The invention discloses a group calling establishing method, a group information sending method, corresponding UE and a network element; and provides a simplified establishing process of group calling to achieve rapid establishment of the group calling. Calling UE in the group calling establishing method executes the following process: sending group calling establishing request information to the network element of an access network; receiving group calling establishing information sent by the network element of the access network, wherein the group calling establishing information contains group calling resource allocation information; and performing resource allocation according to the group calling resource allocation information carried by the group calling establishing information and sending group calling establishing completion information to the network element of the access network. A network element of a trunking core network for achieving establishment of group calling comprises a sending unit and a receiving unit, wherein the sending unit is used for sending a group calling establishing command to the network element of the access network if the calling UE which initiates group calling is provided with a calling initiation permission after receiving the group calling request sent by the network element of the access network; and the receiving unit is used for receiving the group calling establishing completion information sent by the network element of the access network.