A communication control method of controlling switching between propagation paths on a receiver side of a wireless communication system having a plurality of propagation paths, the communication control method including: detecting a position of a moving object on the periphery of the propagation paths and a size of the moving object every predetermined time determined in advance; predicting a movement destination of the moving object based on a movement speed and a movement direction of the moving object calculated from the position of the moving object every predetermined time detected in the detecting, and in a case where the propagation path in communication is blocked by the moving object, predicting a blocking ratio of the propagation path; determining whether or not the propagation path in communication needs to be switched to another propagation path based on a result of the prediction acquired in the predicting; and, in accordance with a determination that the propagation path in communication needs to be switched to another propagation path in the determining, switching directivity of an antenna of the receiver.

A framer in a transmission device allocates plural optical channel time slots to a plurality of logical prioritized paths. It allocates received client signals to the allocated time slots, and transmits the client signals by a plurality of optical subcarriers that use a plurality of optical wavelengths corresponding to the plurality of time slots. The framer includes: a time slot allocation unit that, in a case where an optical wavelength corresponding to a time slot allocated to a logical path having a high transmission priority is not used, allocates at least one of the plurality of time slots to the logical path having the high transmission priority while the time slot corresponding to the unused optical wavelength is avoided, to change the time slot allocated to the logical path having the high transmission priority.

One aspect of a user terminal of the present disclosure includes: a transmission section that transmits information regarding a new candidate beam in a case where a beam failure of a given cell is detected; and a control section that uses a given reference signal as a reference signal for the new candidate beam in a case where the reference signal for the new candidate beam is not configured.

One aspect of a user terminal of the present disclosure includes: a transmission section that transmits information regarding a new candidate beam in a case where a beam failure of a given cell is detected; and a control section that uses a given reference signal as a reference signal for the new candidate beam in a case where the reference signal for the new candidate beam is not configured.

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.

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.

In some embodiments, a first computing device detects a loss of a connection to a first source of timing information that the first computing device and a second computing device use to maintain synchronization with a first clock and a second clock. The first computing device receives a second source of timing information from the second computing device. The second source of timing information is also being transmitted to a third computing device. The first computing device uses the second source of timing information to determine a first timestamp and determines a second timestamp from the first clock. The first computing device uses the first timestamp and the second timestamp to adjust a rate of the first clock where the first clock is used to transmit the second source of timing information from the second computing device to the third computing device.

In some embodiments, a first computing device detects a loss of a connection to a first source of timing information that the first computing device and a second computing device use to maintain synchronization with a first clock and a second clock. The first computing device receives a second source of timing information from the second computing device. The second source of timing information is also being transmitted to a third computing device. The first computing device uses the second source of timing information to determine a first timestamp and determines a second timestamp from the first clock. The first computing device uses the first timestamp and the second timestamp to adjust a rate of the first clock where the first clock is used to transmit the second source of timing information from the second computing device to the third computing device.

The present disclosure provides a method for, in a wireless communication system comprising a UE and a base station including a plurality of cells, performing beam management by the UE via reporting a beam failure or partial beam failure related to one or more cells among a plurality of cells configured to the UE, and a UE and a base station which support the method. According to an embodiment applicable to the present disclosure, a UE can report a beam failure or partial beam failure on one or more cells to a base station, and the base station can quickly recognize the beam failure or partial beam failure on the one or more cells in response thereto.

The present disclosure provides a method for, in a wireless communication system comprising a UE and a base station including a plurality of cells, performing beam management by the UE via reporting a beam failure or partial beam failure related to one or more cells among a plurality of cells configured to the UE, and a UE and a base station which support the method. According to an embodiment applicable to the present disclosure, a UE can report a beam failure or partial beam failure on one or more cells to a base station, and the base station can quickly recognize the beam failure or partial beam failure on the one or more cells in response thereto.