Sharp Kabushiki Kaisha Corporation

Huawei Technologies Co., Limited

Snaptrack Incorporated

Wahoh Oh

Shohei Yamada

Yasuyuki Kato

Katsunari Uemura

Keiichi Hibi

Hidekazu Tsuboi

Toshizo Nogami

Kazuyuki Shimezawa

Hiroshi Katsuragawa

Katsuyuki Machino

A mobile station apparatus transmits capability information including at least indicator selected from a plurality of indicators that each define at least a combination of first information associated with an aggregated frequency bandwidth of one or more component carriers and second information associated with the quantity of component carriers included in the one or more component carriers. A base station apparatus includes a controller that allocates to a mobile station apparatus one or a plurality of component carriers to be used for communication based on a radio resource control (RRC) message received from the mobile station apparatus. The RRC message includes mobile station apparatus capability information including at least one indicator selected from the plurality of indicators.

Mobile station apparatus and base station apparatus

With communication service considered, it is an object to provide a communication system in which power consumption of a mobile station device is suppressed. This mobile communication system includes a base station device and a mobile station device, wherein the base station device includes a scheduling portion that carries out scheduling to determine a downlink CQI effective period scheduled by using the downlink CQI as a downlink effective period, start the downlink effective period after a lapse of a given period from downlink CQI transmission timing, and allow the mobile station device to transmit control information and user data only during the downlink effective period.

Radio communication system, base station device and mobile station device utilizing an intermittent reception

Method and apparatus are provided for mapping an operating frequency band of a mobile station device in a mobile communication system. As operating frequency band position at the time of idle mode of respective mobile station devices is arranged so as to be distributed throughout a unique frequency bandwidth of a base station device.

Mobile station, base station and wireless communication method

A communication system where a terminal apparatus (UE) communicates with a base station apparatus (BS) that configures a first cell. The UE acquires, from the BS, first information and second information, whereby the first information specifying a first number indicating a first subframe, the first subframe including a first resource element in which a first reference signal of the first cell is placed, the second information specifying a second number indicating a second subframe, the second subframe including a second resource element in which a second reference signal of a second cell other than the first cell is to be placed, and the second resource element being not used to transmit a signal of the first cell. The UE also demaps data, whereby, in the second subframe, the data is mapped on resource elements which do not include the second resource element.

Apparatus, device and method that enable efficient reference signal placement and acquires feedback information

A communication system comprises a base station that includes circuitry and a mobile station that includes circuitry and which is configured to perform random access to the base station using a preamble. The preamble corresponds to an ID number among a plurality of ID numbers, the number of the plurality of ID numbers is constant, the plurality of ID numbers are contiguous, and the ID number is randomly selectable, by the mobile station, from a set of ID numbers which are included in the plurality of ID numbers. The base station notifies the mobile station of information indicating the number of ID numbers which are included in the set of ID numbers. The mobile station acquires, from the base station, the information indicating the number of ID numbers which are included in the set of ID numbers.

Mobile station, base station and communication system

An ASN encoder of a mobile station apparatus generates transmission and reception capability information including information relating to one or a plurality of component carriers to be used for communication with a base station apparatus. A transmission and reception apparatus transmits the transmission and reception capability information to the base station apparatus. A controller controls the communication with the base station apparatus, using the one or the plurality of component carriers assigned by the base station apparatus based on the transmission and reception capability information.

Without introducing a complicated ad hoc network system, a transmission/reception signal of a mobile station apparatus is relayed using a communication protocol and a wireless access method defined in a current LTE standard. In a wireless relay communication system including a base station apparatus (), a mobile station apparatus (), and a wireless station apparatus (), the wireless station apparatus () receives a mode switching control signal to switching a mode either to a mobile station apparatus mode in which the wireless station apparatus communicates as one mobile station apparatus () with the base station apparatus () or to a relay station apparatus mode in which the wireless station apparatus relays communication between the base station apparatus () and the mobile station apparatus (). In a case where it is instructed via the mode switching control signal to switch the mode to the mobile station apparatus mode, the wireless station apparatus performs communication with the base station apparatus () on behalf of one mobile station apparatus (). In a case where an instruction is made by the mode switching control signal to switch to the relay station apparatus mode, the wireless station apparatus relays communication between the base station apparatus () and the mobile station apparatus ().

Wireless relay communication system, wireless communication system, mobile station apparatus database, base station apparatus, wireless station apparatus, integrated circuit, computer program, and storage medium

A mobile station device that communicates with a base station device. The mobile communication receives, from the base station device, a control signal for permitting the mobile station device to perform monitoring neighboring cell. The mobile station device also generates a gap based on one length of plural lengths, the gap being used in the monitoring, the one length corresponding to a measurement type of a neighboring cell according to a predetermined rule, the plural lengths being common with the base station, and the predetermine rule being common with the base station.

Method, mobile station device, base station device, and mobile communication system for gap-generation determination

To prevent a collision from occurring at the time of random access in cases such as handover, response to paging and the like where a mobile station apparatus performs random access in response to directions from a base station apparatus. In a mobile communication system in which a mobile station apparatususes a signature of a beforehand determined signature group at the time of random access with a base station apparatus, the signature group is comprised of a signature group managed by the base station apparatusand another signature group managed by the mobile station apparatus. The signature group managed by the base station apparatusincludes signatures associated with particular random access reasons to be selected by the base station apparatus

Mobile communication system, base station apparatus and mobile station apparatus

In a mobile station, correction information is obtained from a base station for correcting a transmission timing shift in an uplink line of the mobile station, and the transmission timing shift is corrected in accordance with the correction information. Within a period in which the correction information is valid, the mobile station requests communication resource allocation information from the base station, using a random access channel having guard time. In an alternate embodiment, if a communication resource for transmitting a control channel in the uplink line is assigned to the mobile station within a period during which the correction information is valid, the mobile station instead requests the communication resource allocation information from the base station using the control channel in an uplink line from the mobile station to the base station.

Method for connecting mobile station to base station, mobile station, base station, multi-carrier mobile communication system, and random access channel mapping method

In a method for mapping an operating frequency band of a mobile station device in a mobile communication system, an operating frequency band position at the time of idle mode of respective mobile station devices is arranged so as to be distributed throughout a unique frequency bandwidth of a base station device.

Mobile station device and method, base station device and method, and mobile station device operating frequency band mapping method

The present invention is to provide base station apparatuses and mobile station apparatuses suitable for a configuration of a distributed wireless communications system, configure the distributed wireless communications system, and provide a pilot channel generation method and synchronization generation method suitable for the distributed wireless communications system. Provided are a control signal generating sectionwhich generates a plurality of mutually different first pilot signals and a second pilot signal based on control data input from the core network apparatus CN constituting the distributed wireless communications system, combines the first pilot signals and the second pilot signal, and thereby generates specific pilot channels for each of radio access unit apparatuses, and a transmitting sectionthat transmits the specific pilot channels respectively to the radio access unit apparatuses.

Base station apparatus, mobile station apparatus, distributed antenna wireless communications system, pilot channel generation method, synchronization channel generation method, and antenna selection method

A mobile station device includes, but is not limited to: a generation unit. The generation unit generates a gap for suspending communication between the mobile station device and a base station device located in a serving cell and for monitoring a neighboring cell. A predetermined interval based on a measurement type is previously set for a gap. The predetermined interval is common between the mobile station device and the base station device. The mobile station device autonomously detects necessity of generation of the gap for monitoring a neighboring cell, and notifies the base station device of a result of the autonomous detection.

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Osaka, Japan

Wahoh Oh