Abstract: A method for checking the association of radio nodes and objects to a radio environment with a radio node set having at least three radio nodes spaced apart from one another, each with a radio interface and its separate timer, wherein at least two radio nodes are reference radio nodes with known distances from one another and at least one radio node is a test radio node, the association of which with the radio environment of the reference radio node is checked. During a measuring process, signals are emitted and received by radio nodes of the radio node set, wherein at least two radio nodes of the radio node set operate as transceivers and at least one radio node exclusively operates as a transmitter or exclusively operates as a receiver or a transceiver.

Abstract: A method for radio measuring applications, wherein at least two radio nodes operate at least once in a transmit mode and in a receive mode and form a cell and at least one radio node operates as an extra radio node works exclusively in a receive or transmit mode, each radio node has a timer and a further data interface, to initiate the measurement cycle, an initial signal with a first carrier frequency is transmitted by one of the radio nodes and received by at least one radio node of the cell, during the measurement cycle at least one radio node of the cell transmits a response signal with a further carrier frequency and the response signal is received by at least one radio node.

Abstract: A method for checking the association of radio nodes with a radio environment having a radio node set by evaluating interference signal components. At least two radio nodes of the radio node set operate as transceivers during a measurement process and at least one radio node operates exclusively as a transmitter or exclusively as a receiver or as a transceiver during the measurement process. The first evaluation step is performed at least once in a first pass for two reference radio nodes and is performed at least once in a second pass for a test radio node and a reference radio node. A positive or negative decision is made on the association with a radio environment on the basis of at least one result of the first pass and at least one result of the second pass.

Abstract: A method for radio measuring applications, wherein a first radio node functions as an initiator and a second radio node as a transponder, each radio node has its own timer and a data interface, in a first step, the initiator transmits a first carrier frequency as an initial signal and the initial signal is received by the transponder during a first reception period, in a second step, a response signal with a second carrier frequency is transmitted by the transponder and the response signal is received by the initiator during a second reception period. The initial signal and the response signal are coherent at least during each sequence of steps, the carrier frequency of the initial signal is changed within one predetermined frequency domain with each repetition.

Abstract: A method for radio measuring applications, wherein at least a first radio node operates as an initiator and at least a second radio node as a transponder, in a first step a first carrier frequency is transmitted by the initiator as an initial signal and received by the transponder. In a second step a response signal with a second carrier frequency is transmitted by the transponder and received by the initiator, during a measurement cycle at least one step sequence of the first and the second step is performed. First the first steps of all sequence of steps and subsequently at least a portion of the second steps of the step sequences are performed in succession, the first carrier frequency assumes a value within a predetermined frequency domain for each repetition, and the initial signals and the response signals are mutually coherent at least within the measurement cycle.