The disclosure relates to a mobile wireless communication device (101a-c) configured to communicate with a location management server (105) over a wireless communication network. The mobile wireless communication device (101a-c) is configured to be part of a cluster of mobile wireless communication devices managed on the basis of a clustering protocol, wherein the clustering protocol is configured to select one of the mobile wireless communication devices (101a-c) of the cluster of mobile wireless communication devices to be a cluster head for representing the cluster of mobile wireless communication devices. The mobile wireless communication devices (101a-c) of the cluster of mobile wireless communication devices are either in a network-connected mode or a network-idle mode relative to the wireless communication network.