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AssigneeAtmel Corporation
InventorsEric Sachse, Tilo Ferchland, Wolfram Kluge
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A first node of a radio network initiates a mode for finding the range to a second node. The first node transmits to the second node, with the address of the second node, a range finding command, which switches the second node into the range finding mode and controls a sequence. The first node transmits in a transmission time window a first signal, which is received by the second node in an associated reception time window, a first phase value of the first signal being measured. The second node transmits in a transmission time window a second signal, which is received by the first node in an associated reception time window, a second phase value of the second signal being measured. The first frequency is changed by a frequency difference and the second frequency is changed by the frequency difference in a subsequent time window of the sequence.
A method for communication between two nodes of a radio network, the method comprising:
A circuit of a node of a radio network, the circuit being configured for address-dependent reception of a range finding command and is switchable into a range finding mode by the command, wherein the circuit is configured to control a sequence through the command, wherein the circuit is configured to transmit a first signal in a transmission time window of the sequence, wherein the circuit is configured to receive a second signal in a transmission time window of the sequence and to measure a first phase value of the second signal, wherein the circuit is configured to change the first frequency of the first signal by a frequency difference in a time window of the sequence following the reception time window, and wherein the circuit is configured to change a reception frequency for reception of the second signal with altered second frequency for a subsequent reception time window of the sequence.
Radio network system, comprising:
Dependencies are inferred from the claim text.