A communication device for communicating over a wireless communication network, the communication device comprising: a memory comprising an application data portion for storing application data, a relay data portion for storing relay data, and a management data portion for storing management data; an application processor configured to operate in one of an execution mode and a power save mode, PSM, wherein, in the execution mode, the application processor is configured to execute an application program based on the application data; a sensor configured to sense a physical parameter in a surrounding of the communication device, wherein the management data comprises the physical parameter; and a communication interface configured to operate in a relay mode and in a management data transmission mode, wherein, in the relay mode, the communication interface is configured to receive the relay data from a first neighboring communication device over the wireless communication network, to store the relay data in the relay data portion, to read the relay data from the relay data portion, and to transmit the relay data to a second neighboring communication device over the wireless communication network, and wherein, in the management data transmission mode, the communication interface is configured to read the management data from the management data portion, and to transmit the management data to the second neighboring communication device over the wireless communication network; wherein the application processor is configured to maintain operation in the power save mode, PSM, during operation of the communication interface in the relay mode and in the management data transmission mode. a memory comprising an application data portion for storing application data, a relay data portion for storing relay data, and a management data portion for storing management data; an application processor configured to operate in one of an execution mode and a power save mode, PSM, wherein, in the execution mode, the application processor is configured to execute an application program based on the application data; a sensor configured to sense a physical parameter in a surrounding of the communication device, wherein the management data comprises the physical parameter; and a communication interface configured to operate in a relay mode and in a management data transmission mode, wherein, in the relay mode, the communication interface is configured to receive the relay data from a first neighboring communication device over the wireless communication network, to store the relay data in the relay data portion, to read the relay data from the relay data portion, and to transmit the relay data to a second neighboring communication device over the wireless communication network, and wherein, in the management data transmission mode, the communication interface is configured to read the management data from the management data portion, and to transmit the management data to the second neighboring communication device over the wireless communication network; wherein the application processor is configured to maintain operation in the power save mode, PSM, during operation of the communication interface in the relay mode and in the management data transmission mode.