Kyocera Corporation

Kyocera Corportion

Masato Fujishiro

Henry S Chang

Kugo Morita

Chiharu Yamazaki

Yushi Nagasaka

Hiroyuki Adachi

Noriyoshi Fukuta

Fangwei Tong

Katsuhiro Mitsui

Hiroyuki Urabayashi

Takahiro Saiwai

Atsuhisa Inakoshi

Naohisa Matsumoto

Amit Kalhan

Susumu Kashiwase

Mayumi Komura

Akinori Iwabuchi

Nobuki Hiramatsu

Hiroshi Uchimura

Shingo Katagiri

Sunao Hashimoto

Yasuhiko Fukuoka

Toi Kanda

Hiroshi Yamasaki

Yukiko Takaba

Takanori Ikuta

Jun Kitakado

Shinji Isoyama

Takahiro Watanabe

Masamichi Yonehara

Tohru Sunaga

Shotaro Sugita

A user equipment that performs wireless communication with a master node and a secondary node by using dual connectivity in a mobile communication system includes: a receiver configured to receive, from the master node, information indicating a radio quality condition to be satisfied for the user equipment to perform activation processing for a secondary cell group of the secondary node; and a controller configured to measure radio quality for the secondary cell group and evaluate whether the radio quality condition is satisfied. The controller performs the activation processing for the secondary cell group in response to the radio quality condition being satisfied.

User equipment, node, and communication method

A communication control method is a method using a relay user equipment relaying communication between a base station and a remote user equipment. The communication control method includes establishing a connection between the remote user equipment and the relay user equipment, and performing a random access procedure establishing a connection between the remote user equipment and the base station. The performing the random access procedure includes a proxy operation where the relay user equipment, instead of the remote user equipment, performs at least a part of an operation to be performed by a Medium Access Control (MAC) layer in the random access procedure.

Communication control method

A mobile wireless communication device (mobile device) receives a Minimization of Drive Test (MDT) configuration comprising criteria for performing event-based logging. The mobile device determines if the criteria have been met and, in response to a determination that the criteria have been met, performs an MDT in accordance with the MDT configuration. The MDT results are logged in the memory as an MDT log. The mobile device transmits, to a base station, a log availability indicator indicating the availability of the event-based MDT log.

Event-based minimum drive test (MDT) log

A communication control method is used in a mobile communication system including a base station for providing a multicast broadcast service (MBS) to a user equipment. The communication control method includes transmitting, by the user equipment configured to receive MBS data via an MBS communication path, to the base station, notification information notifying a desire of the user equipment related to configuration of a unicast communication path associated with the MBS communication path.

A communication control method is used in a cellular communication system. The communication control method includes receiving, by a communication apparatus, from a relay node, a failure occurrence notification indicating occurrence of a failure in a backhaul link between the relay node and a parent node of the relay node, and starting, by the communication apparatus, a timer defining a time to wait for recovery from the failure in response to receiving the failure occurrence notification.

A communication control method is a method executed by a user equipment. The communication control method includes transmitting, to a network, a failure report related to a failure in a procedure related to RRC connection executed by the user equipment when the user equipment exists in enhanced coverage of a serving cell. The failure report includes enhancement state information indicating a coverage enhancement state of the user equipment in the enhanced coverage, and failure count information associated with the enhancement state information. The failure count information indicates the number of times the user equipment fails in the procedure in the coverage enhancement state.

A communication control method includes receiving, by a relay user equipment, data transmitted from a remote user equipment on a sidelink, transmitting, from the relay user equipment to a base station and on an uplink, the data received from the remote user equipment, and transmitting, from the relay user equipment to the remote user equipment, restriction information restricting an amount of data to be transmitted by the remote user equipment.

Communication control method and relay user equipment

A communication control method used in a mobile communication system, the mobile communication system providing a multicast broadcast service (MBS) from a base station to a user equipment, the communication control method including, by the base station, performing header compression processing in which transmission of header information is omitted, the header information being static information included in a header of an MBS packet, and transmitting a compressed MBS packet subjected to the header compression processing, and transmitting, by the base station, after starting transmitting of the compressed MBS packet, the header information separately from the compressed MBS packet.

A communication control method according to an embodiment is a method for controlling dual connectivity communication in which user equipment communicates simultaneously with a master node and a secondary node. The communication control method includes detecting, by the user equipment, deterioration of a radio link between a first base station operating as the master node and the user equipment, transmitting, by the user equipment, a first message based on the deterioration of the radio link, to a second base station operating as the secondary node, and transmitting, by the second base station having received the first message, a second message to the first base station, the second message being used to recover the dual connectivity communication.

A communication control method includes, by a relay node relaying communication between a lower node and an upper node, detecting a failure in a first radio link between the upper node and the relay node, by the relay node, in response to the detection of the failure, transmitting, to the lower node, a first notification indicating the detection of the failure and attempting recovery of the first radio link, and, by the lower node, executing predetermined processing in a state of maintaining a second radio link with the relay node until a predetermined time period elapses after reception of the first notification from the relay node.

A user equipment includes a receiver configured to receive a data packet belonging to an MBS service via a PTM radio bearer, and a controller. The receiver receives, from a base station, configuration information for configuring association between the PTM radio bearer and a PTP data path for receiving the data packet belonging to the MBS service. The controller associates the PTP data path with the PTM radio bearer based on the configuration information.

Communication control method and user equipment

A communication control method according to a first aspect is a method used in cellular communication system including a relay node for relaying communication between a base station and user equipment. The communication control method includes the steps of: broadcasting, by the base station managing a cell belonging to a Non-Public Network (NPN), a system information block including an NPN identifier identifying the NPN to the cell; receiving, by the relay node, the system information block from the base station; and determining, by the relay node, whether an access from the relay node to the cell is permitted, based on the system information block.

Communication control method and relay node

A communication control method according to a first aspect is a method executed by a user equipment. The communication control method includes the step of measuring a residence time of unsent data to be transmitted by the user equipment to a base station via a logical channel and the step of allocating, based on the residence time, a resource for data transmission to the logical channel.

The communication control method controls wireless communication of a packet from a first communication apparatus to a second communication apparatus in a mobile communication system. The communication control method includes, in the first communication apparatus, measuring, on a per packet basis, a residence time of a packet which has not been transmitted and has resided in the first communication apparatus, comparing the residence time of the packet with a time threshold, and discarding the packet of which the residence time exceeds the time threshold without transmitting the packet.

Communication control method and communication apparatus

A communication control method including establishing, by a relay node, a radio backhaul link for relaying communication between user equipment and a donor base station, for a cell managed by an upper node, and performing, by the relay node, an RRC re-establishment process in order to re-establish the radio backhaul link in response to detecting a failure related to the upper node. Performing the RRC re-establishment includes identifying a non-selected cell by use of cell information acquired from a lower node of the donor base station or the relay node, and performing an exclusion process for excluding the non-selected cell from targets for which the radio backhaul link is to be re-established.

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Yokohama, Japan

Masato Fujishiro