A channel state is adequately reported even if the number of component carriers configurable to a user terminal is expanded to six or more. The user terminal for communicating with a radio base station by use of six or more component carriers includes a measuring section configured to measure reception quality of a downlink channel of each of the component carriers, and a transmission section configured to periodically transmit information relating to the reception quality in accordance with timing specified from the radio base station. The transmission section transmits information relating to reception quality of a plurality of component carriers, at a same subframe, by use of PUSCH or a PUCCH format having a larger capacity as compared with a PUCCH format for existing systems in which a number of configured component carriers is five or less.

Disclosed is a method for radio link monitoring in a wireless communication system and an apparatus for the method. More specifically, a method for a user equipment (UE) to perform Radio Link Monitoring (RLM) in a wireless communication system comprises performing second RLM on a cell based on a Reference Signal (RS) other than a Cell-specific Reference Signal (CRS) and determining an Radio Link Failure (RLF) with respect to the cell based on the second RLM, wherein a condition for determining an RLF applied to the second RLM is different from the condition for determining an RLF applied to CRS-based first RLM.

Disclosed is a method for radio link monitoring in a wireless communication system and an apparatus for the method. More specifically, a method for a user equipment (UE) to perform Radio Link Monitoring (RLM) in a wireless communication system comprises performing second RLM on a cell based on a Reference Signal (RS) other than a Cell-specific Reference Signal (CRS) and determining an Radio Link Failure (RLF) with respect to the cell based on the second RLM, wherein a condition for determining an RLF applied to the second RLM is different from the condition for determining an RLF applied to CRS-based first RLM.

A vehicular communication device is provided. The vehicular communication device includes a reception section that receives, from a periphery vehicle equipped with a narrow area communicator for performing vehicle interior communication, a communication performance index representing performance of the narrow area communicator, and a controller. The controller includes: a reference value setup section that successively sets a reference value of the communication performance index based on the communication performance indexes received from multiple the periphery vehicles; an acquisition section that acquires the communication performance index for a targeted narrow area communicator; and an anomaly determination section that determines anomaly of the targeted narrow area communicator, based on comparison between the reference value set by the reference value setup section and the communication performance index acquired by the acquisition section for the targeted narrow area communicator.

An information processing device including a wireless communication section and a control section. The wireless communication section of the information processing device communicates wirelessly with another information processing device using one or multiple channels. The control section of the information processing device performs control to notify the other information processing device of channel information for identifying a channel for use in the wireless communication with the other information processing device using one or multiple channels. Thereby, channels for use in wireless communication can be set appropriately.

Radio link failures, “RLF”, of a wireless device served by a wireless communication network are managed. A first, default, RLF procedure is associated with at least a first type of wireless devices supported by the wireless communication network. The wireless device obtains, e.g. received from a network node information indicative of a second RLF procedure based on that the wireless device is of a second type having an improved radio coverage capability compared to the first type. The wireless device applies, based on the obtained information, said second RLF procedure.

Radio link failures, “RLF”, of a wireless device served by a wireless communication network are managed. A first, default, RLF procedure is associated with at least a first type of wireless devices supported by the wireless communication network. The wireless device obtains, e.g. received from a network node information indicative of a second RLF procedure based on that the wireless device is of a second type having an improved radio coverage capability compared to the first type. The wireless device applies, based on the obtained information, said second RLF procedure.

A gateway apparatus including a first inter-device interface configured to communicate with a monitoring apparatus; a second inter-device interface configured to communicate with multiple subordinate base station apparatuses; a memory; and a processor coupled to the memory. The processor is configured to generate first configuration information when second configuration information is received from the monitoring apparatus via the first inter-device interface. The processor generates the first configuration information by performing protocol conversion of converting the second configuration information into a format adapted to the second inter-device interface for the multiple base station apparatuses. The processor is further configured to transmit the generated first configuration information to the multiple base station apparatuses via the second inter-device interface, and divide the multiple base station apparatuses into predetermined groups. The processor transmits the first configuration information to the multiple base station apparatuses at a different timing for each of the groups.

A gateway apparatus including a first inter-device interface configured to communicate with a monitoring apparatus; a second inter-device interface configured to communicate with multiple subordinate base station apparatuses; a memory; and a processor coupled to the memory. The processor is configured to generate first configuration information when second configuration information is received from the monitoring apparatus via the first inter-device interface. The processor generates the first configuration information by performing protocol conversion of converting the second configuration information into a format adapted to the second inter-device interface for the multiple base station apparatuses. The processor is further configured to transmit the generated first configuration information to the multiple base station apparatuses via the second inter-device interface, and divide the multiple base station apparatuses into predetermined groups. The processor transmits the first configuration information to the multiple base station apparatuses at a different timing for each of the groups.

Systems and methods employ ultra-wide band (UWB) time of flight (ToF) distance measurements for locating a portable device relative to a target. Performance and reliability of UWB ToF distance measurements for locating the portable device is improved by adjusting a communication retry strategy based on signal quality calculations. The quality of an UWB signal received by each satellite of a base station is assessed based on factors like signal strength, noise level, and ratio of first path signal power to total signal power. This data is used to direct the retry strategy to the satellites receiving the best signal quality for these satellites to conduct ToF distance measurements with the portable device and/or to add correction factors to calculated ToF distance measurements.