Mobile Data Collection in a Wireless Sensing Network

An apparatus for selectively collecting data from radio nodes, comprising:

• a processing system comprising at least one memory including computer program code and at least one processor;
• in which the processing system is configured to cause the apparatus to perform:
• collecting identities of a first set of radio nodes which are within one hop of the mobile gateway;
• checking at least the collected identities against a first table that comprises node identities and corresponding data validity timers and a second table that comprises node identities and no corresponding data validity timers;
• and
• based on the checking, selecting a group of radio nodes to activate for collecting and reporting data.

A computer readable memory storing a set of instructions, which when executed on a mobile gateway device, causes the mobile gateway device to perform the steps of:

• collecting identities of a first set of radio nodes which are within one hop of the mobile gateway;
• checking at least the collected identities against a first table that comprises node identities and corresponding data validity timers and a second table that comprises node identities and no corresponding data validity timers;
• and
• based on the checking, selecting a group of radio nodes to activate for collecting and reporting data.