A communication device (24) includes a long-rage transceiver (52), a short-range transceiver (56) and a processor (60). The long-range transceiver is configured to communicate wirelessly with a Base Station (BS) (36) of a cellular network. The short-range transceiver is configured to communicate wirelessly with one or more peer communication devices over a short-range network. The processor is configured to communicate with the peer communication devices via the short-range transceiver and with the BS via the long-range transceiver, so as to share resources between the communication device and the peer communication devices or the cellular network, for providing a communication service.
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