A method for triggering a group of one or more detached wireless communication devices (122) to attach to a wireless communications network (101) for enabling data communications is disclosed. A trigger request message including a group identifier, size information for the group, and location information for the one or more wireless communication devices (122) is received (302) at the network (101). Based on this information, the network (101) determines (304) a delay time period during which the one or more wireless communication devices (122) are to transmit an access request message to the network (101) when triggered to attach to the network. The delay time period is based on the size of the group. During a trigger period, the delay time period and group identifier is transmitted (306) to the one or more wireless communication devices (122) in a trigger message. A wireless communication device (122) is also described.