Sharp Kabushiki Kaisha Corporation

Huawei Technologies Co., Limited

Denso Corporation

Snaptrack Incorporated

Hiroshi Katsuragawa

Shohei Yamada

Tatsushi Aiba

Yosuke Akimoto

Wahoh Oh

Hidekazu Tsuboi

Yohsuke Akimoto

A MS transmits, to a BS, uplink data (UD) on a PUSCH, PUSCH being assigned by using a PDCCH. The MS receives on PDCCH, an indication instructing the MS to transmit reception quality information (RQI) without UD on PUSCH, and transmits on PUSCH, to the BS, RQI without UD based on the indication which is received on PDCCH. The indication is specified based on values to which a plurality of fields of information transmitted on PDCCH are set. One of the plurality of fields is a field used for instructing the MS to transmit RQI and another is a field used for indicating a redundancy version. For instructing the MS to transmit RQI without UD on PUSCH, the field used for instructing the MS to transmit RQI is set to a first single predetermined value (SPV) and the field used for indicating the redundancy version is set to a second SPV.

Communication apparatus and communication method

To optimize transmission periods corresponding to kinds of feedback information, and minimize a reduction in system throughput caused by disagreement of the transmission period with the optimal period, by setting transmission frequencies individually with flexibility corresponding to the kinds of feedback information for a mobile station apparatus to transmit to a base station apparatus, in a wireless communication system in which a mobile station apparatus B measures reception quality of a signal received from a base station apparatus A, and transmits feedback information generated based on the reception quality to the base station apparatus A, the base station apparatus A allocates resources of transmission timing corresponding to the kinds of feedback information, and the mobile station apparatus B transmits a plurality of kinds of feedback information to the base station apparatus using the allocated resources.

Wireless communication system, base station apparatus and mobile station apparatus

An apparatus for signal processing includes a scheduling unit and a transmitting unit. The scheduling unit is configured to assign one physical uplink control channel resource for transmissions of first group feedback information and second group feedback information. A first periodicity corresponds to the first group feedback information and a second periodicity corresponds to the second group feedback information. The transmitting unit is configured to transmit a transmission parameter of the first periodicity and the second periodicity and information of the assigned physical uplink control channel resource. The first group feedback information includes a transmission of reception quality information and transmission signal precoding information and the second group feedback information includes a transmission of transmission signal sequence information.

In a mobile communication system including a plurality of RATs (Radio Access Technologies), the necessity of a control channel for notifying RAT information is eliminated, and the lack of capacity of the control channel can be avoided. In a mobile stationcommunicating with base stations employing the different RATs by employing the respective RATs, when the mobile station executes procedures for registration to an LTE (Long-term evolution) base station-which allows access to only registered mobile stations that are registered in advance, the mobile station obtains, from a HSS (Home Subscriber Server)tied to the LTE base station-, information of another base station that performs communication by employing the RAT different from that used by the LTE base station-

Wireless communication system, mobile station, CSG type base station, home subscriber server, program, integrated circuit, and base station

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 communication system in which a mobile station apparatus transmits reception quality information to a base station apparatus, the reception quality information indicating quality of a signal received from the base station apparatus, characterized in that the base station apparatus transmits information for instructing transmission of reception quality information without uplink data included in an uplink data transmission permission signal, and the mobile station apparatus transmits reception quality information without the uplink data according to the information for instructing transmission of reception quality information without uplink data. This allows a mobile station apparatus to transmit reception quality info information including a large amount of information even if there is no uplink data between the mobile station apparatus and the base station apparatus, and the transmission control flexibly responding to the amount of information and the frequency of transmissions of the reception quality information transmitted from the mobile station apparatus is possible.

A mobile communication system in which a mobile station apparatus transmits reception quality information to a base station apparatus, the reception quality information indicating quality of a signal received from the base station apparatus, characterized in that the base station apparatus transmits information for instructing transmission of reception quality information without uplink data included in an uplink data transmission permission signal, and the mobile station apparatus transmits reception quality information without uplink data according to the information for instructing transmission of reception quality information without uplink data. This allows a mobile station apparatus to transmit reception quality information including a large amount of information even if there is no uplink data between the mobile station apparatus and the base station apparatus, and the transmission control flexibly responding to the amount of information and the frequency of transmissions of the reception quality information transmitted from the mobile station apparatus is possible. Therefore, more efficient communication control (scheduling) between the base station apparatus and the mobile station apparatus can be achieved.

Communication system for transmitting the reception quality information without uplink data

A user registers a desired mobile station at a desired HNB (Home Node B) in a simple operation. A CSG (Closed Subscriber Group) type base station restricts an access from a mobile station that has not been registered yet. The CSG type base station switches in response to an operation performed by a user between a standard mode that permits an access from a mobile station that has been registered in advance while restricting an access from an unregistered mobile station and a register mode that permits an access from an unregistered mobile station which intends to be registered (step S), receives a call at a telephone number for registration from the unregistered mobile station in the register mode (step S), extracts mobile station information including a mobile station ID of the unregistered mobile station that has placed the call, in accordance with the call received at the telephone number for registration (step S), generates registration information by associating the mobile station information with base station information including a base station ID of a host station (step S), and transmits the registration information to a server apparatus (step S).

CSG type base station, control program, and integrated circuit

A mobile station (MS) that transmits uplink data on a PUSCH, the PUSCH being assigned by using a PDCCH. The MS receives a radio resource control signal including first information instructing the MS apparatus to periodically transmit first reception quality information (RQI) and receives, on the PDCCH, second information instructing the MS to transmit second RQI on the PUSCH. The MS transmits only the second RQI on the PUSCH in a case that the transmission of the first RQI which is instructed by using the first information and the transmission of the second RQI which is instructed by using the second information would occur at the same time, where the second RQI is transmitted together with the uplink data on the PUSCH and an amount of resources for the second RQI is determined based on a size of the PUSCH assigned by using the PDCCH.

Mobile communication system, base station apparatus and mobile station apparatus

A base station apparatus in a mobile communication system in which a mobile station apparatus transmits, to the base station apparatus, uplink data using a physical uplink shared channel assigned by an uplink data transmission permission signal. The base station apparatus includes a transmitting unit which is configured to transmit, to the mobile station apparatus, the uplink data transmission permission signal including first information for permitting the mobile station apparatus to transmit reception quality information together with the uplink data, wherein the transmitting unit which is configured to transmit, to the mobile station apparatus, the uplink data transmission permission signal including second information for permitting the mobile station apparatus to transmit the reception quality information without the uplink data.

A mobile station (MS) transmits, to a base station (BS), uplink data on a PUSCH, the PUSCH is assigned by using a PDCCH. The MS receives, from the BS, a radio resource control signal including first information instructing the MS to periodically transmit first reception quality information (RQI), the radio resource control signal including second information for determining an amount of resources for second RQI transmitted on the PUSCH, and third information instructing the MS to transmit the second RQI on the PUSCH; and transmits, to the BS, only the second RQI on the PUSCH in a case that the transmission of the first RQI which is instructed by using the first information and the transmission of the second RQI which is instructed by using the third information would occur at the same time, wherein the amount of resources for the second RQI is determined based on the second information.

A mobile communication system in which a mobile station apparatus transmits, to a base station apparatus, uplink data using a physical uplink shared channel assigned by an uplink data transmission permission signal, wherein the base station apparatus: transmits, to the mobile station apparatus, a radio resource control signal including information for specifying a physical format in transmitting reception quality information together with uplink data; and transmits, to the mobile station apparatus, the uplink data transmission permission signal including a transmission instruction of reception quality information, and wherein the mobile station apparatus transmits, to the base station apparatus, reception quality information together with uplink data using the physical uplink shared channel according to information for specifying the physical format in case that a transmission instruction of the reception quality information is included in the uplink data transmission permission signal.

Growing community of inventors

Osaka, Japan

Hiroshi Katsuragawa