Determining network connection structure of target area

The disclosure is related to determining a network connection structure of devices in a target service place by a service server including a processor and a memory and located at a remote location from the target service place. In order to determine, subscriber information of a target subscriber may be obtained. Based on the subscriber information, public network information associated with the target subscriber may be obtained from predetermined network devices associated with the target subscriber. First devices may be detected based on the obtained subscriber information and the collected network information, wherein the first devices are belonging to the target subscriber and are located in the target subscriber's service place.