Techniques including controlling coupling and uncoupling of RF ports included in an RF switch matrix including first-side RF ports and second-side RF ports, where each of the first-side RF ports is configured to be selectively coupled to at least one of two or more of the second-side RF ports, identifying one or more of the second-side RF ports as active ports including an active port, causing the RF switch matrix to couple the active port to a signal port included in the first-side RF ports, obtaining at least one of a bit error rate and a signal to noise ratio for a demodulation of an RF stream received via the active port, and causing, in response to at least one of the bit error rate or the signal to noise ratio, the RF switch matrix to couple the signal port to a spare port included in the second-side RF ports.

Provided in the present invention are a method performed by user equipment, and user equipment, which can reliably perform processing related to a beam failure recovery request/beam failure report (BFR) and/or scheduling request (SR). The method comprises: detecting a measurement result of a measurement reference signal corresponding to a serving cell; if the measurement result indicates that a beam failure has occurred, utilizing a counter to count the number of beam failures; and when the count value of the counter is above a given threshold, performing processing related to a beam failure recovery request/beam failure report (BFR) and/or scheduling request (SR).

Provided in the present invention are a method performed by user equipment, and user equipment, which can reliably perform processing related to a beam failure recovery request/beam failure report (BFR) and/or scheduling request (SR). The method comprises: detecting a measurement result of a measurement reference signal corresponding to a serving cell; if the measurement result indicates that a beam failure has occurred, utilizing a counter to count the number of beam failures; and when the count value of the counter is above a given threshold, performing processing related to a beam failure recovery request/beam failure report (BFR) and/or scheduling request (SR).

Selecting a control channel set in a communication system involves monitoring received signals to identify a plurality of nodes of interest (NOI) and determining E.sub.b/N.sub.0 values for a plurality of control channels. For this purpose, a data metric and spectral data can be provided to the communication device by the respective NOI for which E.sub.b/N.sub.0 values are being determined. A comparison is made of the E.sub.b/N.sub.0 values for all NOI to select an optimal control channel set. The optimal control channel set is then used by the communication device to transmit the control channel information to the plurality of NOI.

A communication system comprising at least one communication network node having a capacity for communicating with at least one additional communication network node at a given center frequency; and at least one external frequency converter, external to said node, operative to cause at least one communication network node, from outside said node, to communicate with at least one additional communication network node, at least on occasion, according to a given communication protocol, at at least one converted center frequency which differs from the given center frequency, and also comprising beacon functionality.

A communication system comprising at least one communication network node having a capacity for communicating with at least one additional communication network node at a given center frequency; and at least one external frequency converter, external to said node, operative to cause at least one communication network node, from outside said node, to communicate with at least one additional communication network node, at least on occasion, according to a given communication protocol, at at least one converted center frequency which differs from the given center frequency, and also comprising beacon functionality.

The invention relates to an AIS data transmission method using AIS standard-compliant AIS signals. The AIS data (5) to be transmitted is converted into AIS signals on the transmitter side and transmitted via a main channel (41). The AIS signals are received in an AIS receiver (2, 3) and converted back into received AIS data (6, 7). Error-correcting redundancy data is generated from the AIS data (5) to be transmitted or from parts of said data on the transmitter side, and the redundancy data can be used on the receiver side to correct errors of the received MS data (6, 7). The redundancy data is converted into redundancy signals on the transmitter side and transmitted via an auxiliary channel (42) provided in addition to the main channel (41). The invention further relates to a corresponding AIS transmitter, a corresponding AIS receiver, and an AIS transceiver. The invention further relates to a system consisting of AIS transmitters and AIS receivers and to a computer program.

The invention relates to an AIS data transmission method using AIS standard-compliant AIS signals. The AIS data (5) to be transmitted is converted into AIS signals on the transmitter side and transmitted via a main channel (41). The AIS signals are received in an AIS receiver (2, 3) and converted back into received AIS data (6, 7). Error-correcting redundancy data is generated from the AIS data (5) to be transmitted or from parts of said data on the transmitter side, and the redundancy data can be used on the receiver side to correct errors of the received MS data (6, 7). The redundancy data is converted into redundancy signals on the transmitter side and transmitted via an auxiliary channel (42) provided in addition to the main channel (41). The invention further relates to a corresponding AIS transmitter, a corresponding AIS receiver, and an AIS transceiver. The invention further relates to a system consisting of AIS transmitters and AIS receivers and to a computer program.

A method and apparatus for handling radio link failure on unlicensed frequency in a wireless communication system is provided. A wireless device performs Listen Before Talk (LBT) procedure on a serving cell on an unlicensed frequency. A wireless device detects consecutive failures of the LBT procedure on the serving cell. A wireless device bars all cells on the unlicensed frequency for a certain period time.

A method and apparatus for handling radio link failure on unlicensed frequency in a wireless communication system is provided. A wireless device performs Listen Before Talk (LBT) procedure on a serving cell on an unlicensed frequency. A wireless device detects consecutive failures of the LBT procedure on the serving cell. A wireless device bars all cells on the unlicensed frequency for a certain period time.