CIRCUIT ARRANGEMENT FOR TRANSMITTING RADIO SIGNALS AND METHOD FOR OPERATING A CIRCUIT ARRANGEMENT

1 . Circuit arrangement for transmitting uplink and downlink signals between at least one terminal and at least one antenna, wherein the circuit arrangement comprises:

at least one first uplink path for transmitting a first uplink signal and a first downlink path for transmitting a first downlink signal, wherein the circuit arrangement is configured to provide the uplink signals and the downlink signals and is further configured to detect at least one uplink signal, wherein the circuit arrangement is configure to establish an activated state of the uplink path to which the detected uplink signal is assigned; and

at least one further downlink path configured to transmit a further downlink signal, the circuit arrangement configured to establish a simultaneously activated state of at least two downlink paths, wherein the establishing or the maintaining of this activated state takes place when at least one uplink signal is detected and/or that the circuit arrangement comprises at least one further uplink path for transmitting a further uplink signal, wherein the circuit arrangement is further configured to establish a simultaneously activated state of at least two uplink paths, wherein the establishing or the maintaining of an activated state of at least two uplink paths takes place when an uplink signal or when at least two uplink signals is/are detected.

2 . The circuit arrangement according to claim 1 , wherein the activated uplink path and one of the activated downlink paths serve for FDD-based signal transmission.

3 . The circuit arrangement according to claim 2 , wherein the circuit arrangement is configured to establish or maintain, in operation, a simultaneously activated state of at least two downlink paths in response to takes place dependent on a previously known assignment between different uplink signals and downlink paths assigned to these different uplink signals.

4 . The circuit arrangement according to claim 1 , wherein the circuit arrangement is configured to assign to a first downlink frequency range set at least two of the downlink signals, wherein the circuit arrangement is configured to transmit, when establishing or the maintaining of the activated date of the downlink paths during operation, a downlink signal from one of the frequency ranges of the first downlink frequency range set and at least one downlink signal from a downlink frequency range which is not assigned to the first downlink frequency range set.

5 . The circuit arrangement according to claim 4 , wherein the circuit arrangement is configured so that, in operation, several, but not all, or all downlink signals which are not assigned to the first downlink frequency range set, can be transmitted.

6 . The circuit arrangement according to claim 5 , wherein the circuit arrangement is configured to use at least one power splitter to provide either the downlink signals or the uplink signals.

7 . The circuit arrangement according to claim 6 ,

characterised in that an interface on the antenna side of the circuit arrangement is connected to a signal connection on the antenna side of the circuit arrangement for, wherein this signal connection on the antenna side is formed by a signal connection on the antenna side of circuit arrangement and the circuit arrangement is configured to filter the downlink signals.

8 . The circuit arrangement according to claim 7 , wherein the circuit arrangement is configured to establish an activated state that comprise at least one activatable amplifier device and/or at least one activatable damping device.

9 . The circuit arrangement according to claim 8 , wherein the circuit arrangement is configured to establish or maintain the activated state using state comprise at least one switching device.

10 . The circuit arrangement according to claim 1 , wherein the circuit arrangement is configured to detect several simultaneously transmitted uplink signals or a further uplink signal when an uplink signal has already been detected and/or an uplink path has been activated.

11 . The circuit arrangement according to claim 10 , wherein the circuit arrangement is configured to establish or maintain the activated state of the uplink paths required for transmitting all detected uplink signals, wherein the circuit arrangement is further configured to establish or maintain an activated state of downlink paths such that an FDD-based signal transmission is facilitated via all activated uplink and downlink paths.

12 . The circuit arrangement according to claim 1 , wherein the circuit arrangement comprises a signal path configured to transmit signals according to a time-duplex method.

13 . The circuit arrangement according to claim 12 , wherein the circuit arrange is configured to detect a time-duplex-based signal when an activated state of the uplink path and a deactivated state of the downlink path can be established to which the detected time-duplex-based signal is assigned.

14 . Method for operating a circuit arrangement for transmitting uplink and downlink signals between at least one terminal and at least one antenna, comprising verifying whether at least one uplink signal is present, wherein a simultaneously activated state of at least two downlink paths is established or maintained when the uplink signal is detected and/or that a simultaneously activated state of at least two uplink paths is established or maintained when the uplink signal or when at least one further uplink signal is detected.

15 . The method according to claim 14 , wherein the establishing of the activated state is carried out by activating an amplifier device and/or by switching a switching device.