A method for establishing a group call context, comprising: establishing a group call context between a cluster Evolved Packet Core, EPC, and a first base station to which speaking right User Equipment, UE, belongs; establishing a group call context between the cluster EPC and a second base station to which non-speaking right UE belongs; before establishing the group call context between the cluster EPC and the second base station to which the non-speaking right UE belongs, the method further comprising: sending, by the cluster EPC, a group call paging message to the second base station according to a generated group call context establishment request while the RRC connection is established; after the second base station receives the group call paging message, broadcasting, by the second base station, the group call paging message in a coverage area of the second base station; characterized in that, after the non-speaking right UE in the coverage area of the second base station receives the group call paging message, returning, by the non-speaking right UE in the coverage area of the second base station, a group call paging response message to the second base station; after the second base station receives the group call paging response message for the first time, returning, by the second base station, the group call paging response message to the cluster EPC; and after the cluster EPC receives the group call paging response message, sending, by the cluster EPC, a group call context establishment request message to the second base station. establishing a group call context between a cluster Evolved Packet Core, EPC, and a first base station to which speaking right User Equipment, UE, belongs; establishing a group call context between the cluster EPC and a second base station to which non-speaking right UE belongs; before establishing the group call context between the cluster EPC and the second base station to which the non-speaking right UE belongs, the method further comprising: sending, by the cluster EPC, a group call paging message to the second base station according to a generated group call context establishment request while the RRC connection is established; after the second base station receives the group call paging message, broadcasting, by the second base station, the group call paging message in a coverage area of the second base station; characterized in that, after the non-speaking right UE in the coverage area of the second base station receives the group call paging message, returning, by the non-speaking right UE in the coverage area of the second base station, a group call paging response message to the second base station; after the second base station receives the group call paging response message for the first time, returning, by the second base station, the group call paging response message to the cluster EPC; and after the cluster EPC receives the group call paging response message, sending, by the cluster EPC, a group call context establishment request message to the second base station. sending, by the cluster EPC, a group call paging message to the second base station according to a generated group call context establishment request while the RRC connection is established; after the second base station receives the group call paging message, broadcasting, by the second base station, the group call paging message in a coverage area of the second base station; characterized in that, after the non-speaking right UE in the coverage area of the second base station receives the group call paging message, returning, by the non-speaking right UE in the coverage area of the second base station, a group call paging response message to the second base station; after the second base station receives the group call paging response message for the first time, returning, by the second base station, the group call paging response message to the cluster EPC; and after the cluster EPC receives the group call paging response message, sending, by the cluster EPC, a group call context establishment request message to the second base station.