JP2011035770A - Mobile communication system, base station device, mobile station device and communication method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile communication system and a mobile communication method, capable of transmitting data (information) suppressing transmission power in a mobile station device low when performing communication in a wide frequency band by compositely using a plurality of continuous and/or discontinuous frequency bands (carrier elements). <P>SOLUTION: In the mobile communication system, the base station device and the mobile station device perform communication using the plurality of carrier elements. The base station device allocates a first physical uplink control channel for transmitting first control information to the mobile station device, and allocates each of a plurality of second physical uplink control channels for transmitting second control information to the mobile station device in the same sub-frame as the sub-frame to which the first physical uplink control channel is allocated. The mobile station device selects one of the plurality of second physical uplink control channels, and transmits the first control information and the second control information together or the second control information to the base station device. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a mobile communication system and a communication method including a base station device and a mobile station device.

  The 3rd Generation Partnership Project (3GPP) examines and creates specifications for mobile communication systems based on networks developed from W-CDMA (Wideband-Code Division Multiple Access) and GSM (Global System for Mobile Communications). It is a project. In 3GPP, the W-CDMA system is standardized as a third generation cellular mobile communication system, and services are started sequentially. In addition, HSDPA (High-speed Downlink Packet Access), which further increases the communication speed, has been standardized and a service has been started. 3GPP uses the evolution of third-generation radio access technology (hereinafter referred to as “LTE (Long Term Evolution)” or “EUTRA (Evolved Universal Terrestrial Radio Access)”) and a wider frequency band. Thus, studies on a mobile communication system (hereinafter, referred to as “LTE-A (Long Term Evolution-Advanced)” or “Advanced-EUTRA”) that realizes higher-speed data transmission / reception are in progress. .

  As communication systems in LTE, OFDMA (Orthogonal Frequency Division Multiple Access) system that performs user multiplexing using mutually orthogonal subcarriers and SC-FDMA (Single Carrier-Frequency Division Multiple Access) system are being studied. . That is, an OFDMA scheme that is a multicarrier communication scheme is proposed for the downlink, and an SC-FDMA scheme that is a single carrier communication scheme is proposed for the uplink.

  On the other hand, as a communication method in LTE-A, the OFDMA method is used in the downlink, and in the uplink, in addition to the SC-FDMA method, Clustered-SC-FDMA (Clustered-Single Carrier-Frequency Division Multiple Access, DFT-s). -It is also called OFDM with Spectrum Division Control and DFT-precoded OFDM. Here, in LTE and LTE-A, the SC-FDMA system and the Clustered-SC-FDMA system proposed as uplink communication systems are based on the characteristics of the single carrier communication system (depending on the single carrier characteristics), and data (information ) Is transmitted at a low PAPR (Peak to Average Power Ratio: peak power to average power ratio, transmission power).

  In LTE-A, while a frequency band used in a general mobile communication system is continuous, a plurality of continuous and / or discontinuous frequency bands (hereinafter referred to as “carrier element, carrier component (CC: Carrier) Component ”or“ element carrier, component carrier (CC: Component Carrier) ”) is used in combination to operate as one frequency band (wideband frequency band) (frequency band aggregation: Also called Spectrum aggregation, Carrier aggregation, Frequency aggregation, etc.). Furthermore, in order for the base station apparatus and the mobile station apparatus to communicate using a wide frequency band more flexibly, the frequency band used for downlink communication and the frequency band used for uplink communication are different frequency bands. It has also been proposed to use a width (Asymmetric carrier aggregation) (Non-Patent Document 1).

  FIG. 13 is a diagram for explaining a mobile communication system in which frequency bands are aggregated in the conventional technique. The frequency band used for downlink (DL) communication and the frequency band used for uplink (UL) communication as shown in FIG. 13 have the same bandwidth. It is also called aggregation (Symmetric carrier aggregation). As shown in FIG. 13, the base station apparatus and the mobile station apparatus have a wide band configured of a plurality of carrier elements by using a plurality of carrier elements that are continuous and / or discontinuous frequency bands. Communication can be performed in the frequency band. In FIG. 13, as an example, the frequency band used for downlink communication with a bandwidth of 100 MHz (hereinafter also referred to as DL system band or DL system bandwidth) includes five downlinks with a bandwidth of 20 MHz. It shows that it is configured by a link carrier element (DCC1: Downlink Component Carrier1, DCC2, DCC3, DCC4, DCC5). Further, as an example, five uplink carriers having a bandwidth of 20 MHz are used as frequency bands (hereinafter also referred to as UL system bandwidth and UL system bandwidth) used for uplink communication having a bandwidth of 100 MHz. It shows that it is configured by elements (UCC1: Uplink Component Carrier1, UCC2, UCC3, UCC4, UCC5).

  In FIG. 13, each downlink carrier element includes a downlink channel such as a physical downlink control channel (hereinafter referred to as PDCCH) and a physical downlink shared channel (hereinafter referred to as PDSCH). Is placed. The base station apparatus transmits control information (resource allocation information, MCS (Modulation and Coding Scheme) information, HARQ (Hybrid Automatic Repeat Request) for transmitting a downlink transport block transmitted using PDSCH. , Hybrid automatic retransmission request) processing information, etc.) can be transmitted to the mobile station apparatus using PDCCH, and the downlink transport block can be transmitted to the mobile station apparatus using PDSCH. That is, in FIG. 13, the base station apparatus can transmit up to five downlink transport blocks to the mobile station apparatus in the same subframe.

  Further, uplink channels such as a physical uplink control channel (hereinafter referred to as PUCCH) and a physical uplink shared channel (hereinafter referred to as PUSCH) are arranged in each uplink carrier element. Is done. The mobile station apparatus uses PUCCH and / or PUSCH to control information in HARQ for PDCCH and / or downlink transport block, channel state information, and uplink control information (UCI) such as a scheduling request. Then, an uplink control signal (also referred to as UCS: Uplink Control Signaling) is transmitted to the base station apparatus. Here, the control information in HARQ is ACK / NACK (acknowledgement: Positive Acknowledgement / Negative Acknowledgment, ACK signal or NACK signal) and / or DTX (PTXCH and / or downlink transport block). Information indicating discontinuous transmission. The information indicating DTX is information indicating that the mobile station apparatus cannot detect the PDCCH from the base station apparatus. Here, in FIG. 13, there may be a downlink / uplink carrier element in which any of the downlink / uplink channels such as PDCCH, PDSCH, PUCCH, and PUSCH is not arranged.

  Similarly, FIG. 14 is a diagram for explaining a mobile communication system subjected to asymmetric carrier band aggregation in the prior art. As shown in FIG. 14, the base station apparatus and the mobile station apparatus use different bandwidths for the frequency band used for downlink communication and the frequency band used for uplink communication. Communication can be performed in a wide frequency band by using a combination of carrier elements that are discontinuous frequency bands. In FIG. 14, as an example, the frequency band used for downlink communication having a bandwidth of 100 MHz is determined by five downlink carrier elements (DCC1, DCC2, DCC3, DCC4, DCC5) having a bandwidth of 20 MHz. The frequency band used for uplink communication having a bandwidth of 40 MHz is configured by two uplink carrier elements (UCC1, UCC2) having a bandwidth of 20 MHz. Yes. In FIG. 14, a downlink / uplink channel is arranged in each downlink / uplink carrier element, and the base station apparatus uses a plurality of PDSCHs allocated by a plurality of PDCCHs. The link transport block can be transmitted to the mobile station apparatus in the same subframe. Also, the mobile station apparatus uses PUCCH and / or PUSCH to transmit HARQ control information, channel state information, and uplink control information (UCI) such as a scheduling request for the PDCCH and / or downlink transport block. It can be transmitted to the base station apparatus.

"Initial Access Procedure for Asymmetric Wider Bandwidth in LTE-Advanced", 3GPP TSG RAN WG1 Meeting # 55, R1-084249, November 10-14, 2008.

  However, in the conventional technology, a mobile station apparatus transmits data (information) to a base station apparatus using a plurality of PUCCHs in the same subframe (simultaneous transmission of a plurality of PUCCHs), or a plurality of data in the same subframe. There is a problem in that data cannot be transmitted using a single PUSCH (simultaneous transmission of a plurality of PUSCHs). On the other hand, in LTE-A, since a mobile station apparatus transmits data using a plurality of uplink carrier elements, it is possible to transmit data with higher transmission power (PAPR) than before. However, even in LTE-A, it is important for the mobile station apparatus to suppress the transmission power when transmitting data to a certain extent, and data using a plurality of uplink carrier elements considering the transmission power in the mobile station apparatus. Need to be transmitted (simultaneous transmission of a plurality of PUCCHs in consideration of transmission power in the mobile station apparatus or simultaneous transmission of a plurality of PUSCHs is necessary).

  The present invention has been made in view of such circumstances, and when a base station apparatus and a mobile station apparatus perform communication in a wide frequency band by using carrier elements in combination, in the mobile station apparatus An object of the present invention is to provide a mobile communication system and a communication method capable of transmitting data (information) with low transmission power.

  (1) In order to achieve the above object, the present invention takes the following measures. That is, the mobile communication system of the present invention is a mobile communication system in which a base station apparatus and a mobile station apparatus communicate with each other using a plurality of carrier elements, and the base station apparatus includes the first mobile station apparatus, A first physical uplink control channel for transmitting the control information is assigned to the mobile station apparatus, and the mobile station apparatus transmits a plurality of second physical uplinks for transmitting the second control information. Each control channel is allocated to the mobile station apparatus in the same subframe as the subframe to which the first physical uplink control channel is allocated, and the mobile station apparatus transmits the plurality of second physical uplink control channels. Any one of the second physical uplink control channels is selected, and the selected second physical uplink control channel is the first physical uplink control channel. The first control information and the second control information are both transmitted to the base station apparatus when the channel is arranged in an uplink carrier element different from the uplink carrier element in which the channel is arranged, and the selected When the second physical uplink control channel is arranged in the same uplink carrier element as the uplink carrier element in which the first physical uplink control channel is arranged, the second control information is A mobile communication system transmitting to the base station apparatus.

  (2) In addition, when a physical uplink shared channel is allocated by the base station device, the mobile station device shares both the first control information and the second control information with the physical uplink. A mobile communication system using a channel for transmission to the base station apparatus.

  (3) A mobile communication system in which a base station apparatus and a mobile station apparatus communicate with each other using a plurality of carrier elements, wherein the base station apparatus has a single physical uplink control. Information indicating specific one or more uplink carrier elements for transmitting uplink control information using a channel is transmitted to the mobile station device, and the mobile station device transmits the first control information A first physical uplink control channel for transmission is allocated to the mobile station apparatus, and each of the plurality of second physical uplink control channels for the mobile station apparatus to transmit second control information is assigned to the mobile station apparatus. The mobile station apparatus allocates the first physical uplink control channel to the same subframe as the subframe to which the first physical uplink control channel is allocated, and the mobile station apparatus transmits the plurality of second physical uplink links. One of the second physical uplink control channels is selected from among the control channels, and the selected second physical uplink control channel is different from the specific one or more uplink carrier elements. In the case of being arranged in an element, both the first control information and the second control information are transmitted to the base station apparatus, and the selected second physical uplink control channel is the specific 1 In the mobile communication system, the second control information is transmitted to the base station apparatus when arranged in the same uplink carrier element as one or a plurality of uplink carrier elements.

  (4) When the physical uplink shared channel is assigned by the base station device, the mobile station device shares the physical uplink with both the first control information and the second control information. A mobile communication system using a channel for transmission to the base station apparatus.

  (5) In addition, when the mobile station apparatus is assigned a physical uplink shared channel in the one or more specific uplink carrier elements by the base station apparatus, the first control information And the second control information are transmitted to the base station apparatus using the physical uplink shared channel.

  (6) The mobile communication system is characterized in that the first control information is channel state information indicating a downlink channel state.

  (7) The mobile communication system is characterized in that the first control information is a scheduling request for requesting allocation of resources for transmitting uplink data.

  (8) In the mobile communication system, the second control information is HARQ control information for a physical downlink control channel and / or a downlink transport block.

  (9) A mobile station apparatus in a mobile communication system in which a base station apparatus and a mobile station apparatus communicate with each other using a plurality of carrier elements, and a first physical uplink for transmitting first control information Means for receiving a signal for allocating a link control channel from the base station apparatus, and a plurality of second physical uplink control channels for transmitting second control information, the first physical uplink control channel Means for receiving a signal to be allocated to the same subframe as the allocated subframe from the base station apparatus, and selecting any second physical uplink control channel from the plurality of second physical uplink control channels And the selected second physical uplink control channel is an uplink carrier on which the first physical uplink control channel is arranged. Means for transmitting both the first control information and the second control information to the base station apparatus, and the selected second physical uplink, when arranged in a different uplink carrier element When the control channel is arranged in the same uplink carrier element as the uplink carrier element in which the first physical uplink control channel is arranged, the second control information is transmitted to the base station apparatus A mobile station apparatus.

  (10) When the physical uplink shared channel is allocated by the base station device, the mobile station device shares both the first control information and the second control information with the physical uplink. The mobile station apparatus transmits to the base station apparatus using a channel.

  (11) A mobile station apparatus in a mobile communication system in which a base station apparatus communicates with a mobile station apparatus using a plurality of carrier elements, and uplink control is performed using a single physical uplink control channel. Means for receiving information for setting one or more specific uplink carrier elements for transmitting information from the base station apparatus, and a first physical uplink control channel for transmitting first control information Means for receiving a signal to be allocated from the base station apparatus, and a plurality of second physical uplink control channels for transmitting second control information, each of which is a sub-channel to which the first physical uplink control channel is allocated. Means for receiving a signal to be allocated to the same subframe as a frame from the base station apparatus, and a plurality of second physical uplink control channels. Means for selecting one of the second physical uplink control channels and the selected second physical uplink control channel are arranged in an uplink carrier element different from the one or more specific uplink carrier elements The first control information and the second control information are both transmitted to the base station apparatus, and the selected second physical uplink control channel is the specific one. Or a mobile station apparatus comprising: means for transmitting the second control information to the base station apparatus when arranged in the same uplink carrier element as a plurality of uplink carrier elements It is.

  (12) When the physical uplink shared channel is allocated by the base station device, the mobile station device shares the physical uplink shared with the first control information and the second control information. The mobile station apparatus transmits to the base station apparatus using a channel.

  (13) In addition, when the mobile station apparatus is assigned a physical uplink shared channel in the one or more specific uplink carrier elements by the base station apparatus, the first control information And the second control information are transmitted to the base station apparatus using the physical uplink shared channel.

  (14) A mobile station apparatus communication method in a mobile communication system in which a base station apparatus and a mobile station apparatus communicate with each other using a plurality of carrier elements, and a first method for transmitting first control information A plurality of second physical uplink control channels for transmitting second control information are received from the base station apparatus and a signal for assigning a physical uplink control channel is assigned to the first physical uplink control channel. A signal to be allocated to the same subframe as the allocated subframe from the base station apparatus, and select any second physical uplink control channel from the plurality of second physical uplink control channels, The selected second physical uplink control channel is different from an uplink carrier element on which the first physical uplink control channel is arranged. The first control information and the second control information are both transmitted to the base station apparatus, and the selected second physical uplink control channel is When the first physical uplink control channel is arranged on the same uplink carrier element as the uplink carrier element on which the first physical uplink control channel is arranged, the second control information is transmitted to the base station apparatus. Communication method.

  (15) A mobile station apparatus communication method in a mobile communication system in which a base station apparatus and a mobile station apparatus communicate using a plurality of carrier elements, using a single physical uplink control channel 1st physical uplink control for receiving the information which sets the specific 1 or several uplink carrier element for transmitting uplink control information from the said base station apparatus, and transmitting 1st control information A subframe in which a signal for assigning a channel is received from the base station apparatus and each of a plurality of second physical uplink control channels for transmitting second control information is assigned to the first physical uplink control channel. And a signal to be allocated to the same subframe from the base station apparatus, and any one of the second physical uplink control channels is selected from the plurality of second physical uplink control channels. When a logical uplink control channel is selected and the selected second physical uplink control channel is arranged in an uplink carrier element different from the specific one or more uplink carrier elements, Both the first control information and the second control information are transmitted to the base station apparatus, and the selected second physical uplink control channel is the same as the specific one or more uplink carrier elements. In the case of being arranged in an uplink carrier element, the second control information is transmitted to the base station apparatus.

  According to the present invention, when a base station apparatus and a mobile station apparatus communicate in a wide frequency band by using a plurality of continuous and / or discontinuous frequency bands (carrier elements) in combination, It is possible to transmit data (information) with low transmission power in the apparatus.

It is a figure which shows notionally the structure of the physical channel which concerns on embodiment of this invention. It is a block diagram which shows schematic structure of the base station apparatus which concerns on embodiment of this invention. It is a block diagram which shows schematic structure of the mobile station apparatus which concerns on embodiment of this invention. It is a figure which shows the example of the mobile communication system which can apply 1st Embodiment. It is a figure which shows the example of the mobile communication system which can apply 1st Embodiment. It is a figure which shows the example of the mobile communication system which can apply 1st Embodiment. It is a figure explaining operation | movement of the mobile station apparatus when a physical uplink shared channel is allocated. It is a figure which shows the example of the mobile communication system which can apply 2nd Embodiment. It is a figure which shows the example of the mobile communication system which can apply 2nd Embodiment. It is a figure which shows the example of the mobile communication system which can apply 2nd Embodiment. It is a figure explaining operation | movement of the mobile station apparatus when a physical uplink shared channel is allocated. It is a figure explaining operation | movement of the mobile station apparatus when a physical uplink shared channel is allocated. It is a figure which shows the example of the frequency band aggregation in a prior art. It is a figure which shows the example of asymmetric frequency band aggregation in a prior art.

  Next, embodiments according to the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration example of a channel according to an embodiment of the present invention. The downlink physical channel includes a physical broadcast channel (PBCH), a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical multicast channel ( It consists of a PMCH (Physical Multicast Channel), a physical control format indicator channel (PCFICH), and a physical hybrid automatic repeat request indicator channel (PHICH). The uplink physical channel is composed of a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), and a physical random access channel (PRACH). The

  The physical broadcast channel (PBCH) maps the broadcast channel (BCH) at intervals of 40 milliseconds. The timing of 40 milliseconds is blind detected. That is, explicit signaling is not performed for timing presentation. In addition, a subframe including a physical broadcast channel (PBCH) can be decoded only by the subframe (self-decodable).

  The physical downlink control channel (PDCCH) is a physical downlink shared channel (PDSCH) resource allocation, hybrid automatic repeat request (HARQ) information for downlink data, and a physical uplink shared channel (PUSCH). This is a channel used for notifying (transmitting) uplink transmission permission, which is resource allocation, to the mobile station apparatus. The PDDCH is configured by a plurality of control channel elements (CCE), and the mobile station apparatus receives the PDCCH from the base station apparatus by detecting the PDCCH configured by the CCE. This CCE is composed of a plurality of resource element groups (REG: Resource Element Group, also called mini-CCE) distributed in the frequency and time domains. Here, the resource element is a unit resource composed of one OFDM symbol (time component) and one subcarrier (frequency component). For example, a REG is a downlink pilot channel in the frequency domain within the same OFDM symbol. Except for this, it is composed of four downlink resource elements that are continuous in the frequency domain. Also, for example, one PDCCH is composed of one, two, four, and eight CCEs having consecutive CCE identification numbers (CCE indexes).

  The PDCCH is encoded (Separate Coding) separately for each mobile station apparatus and for each type. That is, the mobile station apparatus detects a plurality of PDCCHs, and acquires information indicating downlink or uplink resource allocation and other control signals. Each PDCCH has a CRC (Cyclic Redundancy Check) value that can identify the format, and the mobile station apparatus performs CRC for each CCE set in which the PDCCH can be configured, and the CRC succeeds. Get PDCCH. This is also referred to as blind decoding, and the range of CCE sets in which a PDCCH in which the mobile station apparatus performs blind decoding can be configured is called a search space. That is, the mobile station apparatus performs blind decoding on the CCE in the search area and detects the PDCCH.

  When the PDCCH includes physical downlink shared channel (PDSCH) resource allocation, the mobile station device uses the physical downlink shared channel (PDSCH) according to the resource allocation indicated by the PDCCH from the base station device. Data (downlink data (downlink shared channel (DL-SCH)) and / or downlink control data (downlink control information)). That is, this PDCCH is a signal for performing resource allocation for the downlink (hereinafter referred to as “downlink transmission permission signal” or “downlink grant”). Further, when the PDCCH includes physical uplink shared channel (PUSCH) resource allocation, the mobile station device sets the physical uplink shared channel (PUSCH) according to the resource allocation indicated by the PDCCH from the base station device. Data (uplink data (uplink shared channel (UL-SCH)) and / or uplink control data (uplink control information)) is transmitted. That is, the PDCCH is a signal that permits data transmission on the uplink (hereinafter referred to as an “uplink transmission permission signal” or “uplink grant”).

  The physical downlink shared channel (PDSCH) is a channel used for transmitting downlink data (downlink shared channel: DL-SCH) or paging information (paging channel: PCH). The physical multicast channel (PMCH) is a channel used for transmitting the multicast channel (MCH), and a downlink reference signal, an uplink reference signal, and a physical downlink synchronization signal are separately arranged.

  Here, downlink data (DL-SCH) indicates transmission of user data, for example, and DL-SCH is a transport channel. In DL-SCH, HARQ and dynamic adaptive radio link control are supported, and beamforming can be used. The DL-SCH supports dynamic resource allocation and semi-static resource allocation.

  The physical uplink shared channel (PUSCH) is a channel mainly used for transmitting uplink data (uplink shared channel: UL-SCH). Further, when the base station apparatus schedules the mobile station apparatus, uplink control (uplink control signal) is also transmitted using PUSCH. The uplink control information includes channel state information CSI (Channel State information or Channel statistical information) indicating a downlink channel state, a downlink channel quality identifier CQI (Channel Quality Indicator), a precoding matrix identifier. It includes PMI (Precoding Matrix Indicator), rank identifier RI (Rank Indicator), and HARQ control information (information indicating ACK / NACK and / or information indicating DTX) for PDCCH and / or downlink transport block. Here, in the channel state information CSI, for example, the downlink channel state itself measured by the mobile station device (the downlink channel state measured by the mobile station device is expressed by an eigen factor or the like) is specified. Also includes typical channel state information (Explicit CSI). CQI, PMI, RI, etc. are also called implicit channel state information (Implicit CSI).

  Here, uplink data (UL-SCH) indicates transmission of user data, for example, and UL-SCH is a transport channel. In UL-SCH, HARQ and dynamic adaptive radio link control are supported, and beamforming can be used. UL-SCH supports dynamic resource allocation and quasi-static resource allocation.

  Further, uplink data (UL-SCH) and downlink data (DL-SCH) include radio resource control signals (hereinafter referred to as “RRC signaling: Radio Resource Control Signaling”) exchanged between the base station apparatus and the mobile station apparatus. ”, MAC (Medium Access Control) control elements, and the like may be included.

  The physical uplink control channel (PUCCH) is a channel used for transmitting uplink control information (uplink control signal). Here, the uplink control information refers to, for example, channel state information CSI indicating a downlink channel state, downlink channel quality identifier CQI, precoding matrix identifier PMI, rank identifier RI, and mobile station apparatus. A scheduling request (SR: Scheduling Request) for requesting allocation of resources for transmitting link data (requesting transmission on UL-SCH), and control information (ACK in HARQ for PDCCH and / or downlink transport block) / NACK information and / or DTX information).

  The physical control format indication channel (PCFICH) is a channel used to notify the mobile station apparatus of the number of OFDM symbols used for PDCCH, and is transmitted in each subframe. The physical hybrid automatic repeat request instruction channel (PHICH) is a channel used for transmitting ACK / NACK used for HARQ of uplink data. The physical random access channel (PRACH) is a channel used for transmitting a random access preamble and has a guard time. As shown in FIG. 1, the mobile communication system according to the present embodiment includes a base station device 100 and a mobile station device 200.

[Configuration of base station apparatus]
FIG. 2 is a block diagram showing a schematic configuration of the base station apparatus 100 according to the embodiment of the present invention. The base station apparatus 100 includes a data control unit 101, a transmission data modulation unit 102, a radio unit 103, a scheduling unit 104, a channel estimation unit 105, a received data demodulation unit 106, a data extraction unit 107, and an upper layer. 108 and an antenna 109. The radio unit 103, the scheduling unit 104, the channel estimation unit 105, the reception data demodulation unit 106, the data extraction unit 107, the upper layer 108 and the antenna 109 constitute a reception unit, and the data control unit 101, the transmission data modulation unit 102, The radio unit 103, the scheduling unit 104, the upper layer 108, and the antenna 109 constitute a transmission unit.

  The antenna 109, the radio unit 103, the channel estimation unit 105, the reception data demodulation unit 106, and the data extraction unit 107 perform processing on the uplink physical layer. The antenna 109, the radio unit 103, the transmission data modulation unit 102, and the data control unit 101 perform downlink physical layer processing.

  The data control unit 101 receives a transport channel from the scheduling unit 104. The data control unit 101 maps the transport channel and the signal and channel generated in the physical layer to the physical channel based on the scheduling information input from the scheduling unit 104. Each piece of data mapped as described above is output to transmission data modulation section 102.

  The transmission data modulation unit 102 modulates transmission data to the OFDM scheme. The transmission data modulation unit 102 performs data modulation, coding, and coding on the data input from the data control unit 101 based on the scheduling information from the scheduling unit 104 and the modulation scheme and coding scheme corresponding to each PRB. Signal processing such as serial / parallel conversion of input signals, IFFT (Inverse Fast Fourier Transform) processing, CP (Cyclic Prefix) insertion, and filtering is performed to generate transmission data, and to wireless section 103 Output. Here, the scheduling information includes downlink physical resource block PRB (Physical Resource Block) allocation information, for example, physical resource block position information composed of frequency and time, and the modulation scheme and coding corresponding to each PRB. The scheme includes, for example, information such as a modulation scheme: 16QAM and a coding rate: 2/3 coding rate.

  Radio section 103 up-converts the modulation data input from transmission data modulation section 102 to a radio frequency to generate a radio signal, and transmits the radio signal to mobile station apparatus 200 via antenna 109. Radio section 103 receives an uplink radio signal from mobile station apparatus 200 via antenna 109, down-converts it into a baseband signal, and receives received data as channel estimation section 105 and received data demodulation section 106. And output.

  The scheduling unit 104 performs processing of a medium access control (MAC) layer. The scheduling unit 104 performs mapping between logical channels and transport channels, downlink and uplink scheduling (HARQ processing, selection of transport format, etc.), and the like. Since the scheduling unit 104 controls the processing units of each physical layer in an integrated manner, the scheduling unit 104, the antenna 109, the radio unit 103, the channel estimation unit 105, the reception data demodulation unit 106, the data control unit 101, the transmission data modulation There is an interface between the unit 102 and the data extraction unit 107 (not shown).

  In downlink scheduling, the scheduling unit 104 performs feedback information received from the mobile station apparatus 200 (uplink channel state information (CSI, CQI, PMI, RI), ACK / NACK information for downlink data, etc.), A downlink transport format (transmission form, ie, physical resource block) for modulating each data based on PRB information that can be used by the mobile station apparatus, buffer status, scheduling information input from the higher layer 108, etc. Allocation processing, modulation scheme and coding scheme), HARQ retransmission control, and scheduling information used for downlink. The scheduling information used for downlink scheduling is output to the data control unit 101.

  Further, in uplink scheduling, the scheduling unit 104 estimates the uplink channel state (radio channel state) output from the channel estimation unit 105, the resource allocation request from the mobile station device 200, and each mobile station device 200. Based on the available PRB information, scheduling information input from the higher layer 108, etc., an uplink transport format for modulating each data (transmission form, ie, physical resource block allocation and modulation scheme and Encoding information and the like, and scheduling information used for uplink scheduling. Scheduling information used for uplink scheduling is output to the data control unit 101.

  In addition, the scheduling unit 104 maps the downlink logical channel input from the higher layer 108 to the transport channel, and outputs it to the data control unit 101. In addition, the scheduling unit 104 processes the control data and the transport channel acquired in the uplink input from the data extraction unit 107 as necessary, maps them to the uplink logical channel, and outputs them to the upper layer 108. To do.

  The channel estimation unit 105 estimates an uplink channel state from an uplink demodulation reference signal (DRS) for demodulation of uplink data, and outputs the estimation result to the reception data demodulation unit 106. . In addition, in order to perform uplink scheduling, an uplink channel state is estimated from an uplink measurement reference signal (SRS), and the estimation result is output to the scheduling section 104.

  Received data demodulator 106 also serves as an OFDM demodulator and / or DFT-Spread-OFDM (DFT-S-OFDM) demodulator that demodulates received data modulated in the OFDM scheme and / or SC-FDMA scheme. Yes. Based on the uplink channel state estimation result input from the channel estimation unit 105, the reception data demodulation unit 106 performs DFT conversion, subcarrier mapping, IFFT conversion, filtering, and the like on the modulation data input from the radio unit 103. Are subjected to demodulation processing and output to the data extraction unit 107.

  The data extraction unit 107 confirms the correctness of the data input from the reception data demodulation unit 106 and outputs a confirmation result (positive signal ACK / negative signal NACK) to the scheduling unit 104. The data extraction unit 107 separates the data input from the reception data demodulation unit 106 into a transport channel and physical layer control data, and outputs the data to the scheduling unit 104. The separated control data includes channel state information CSI notified from the mobile station apparatus 200, downlink channel quality identifier CQI, precoding matrix identifier PMI, rank identifier RI, HARQ control information, scheduling request, and the like. include.

  The upper layer 108 performs processing of a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a radio resource control (RRC) layer. The upper layer 108 integrates and controls the processing units of the lower layer, so the upper layer 108, the scheduling unit 104, the antenna 109, the radio unit 103, the channel estimation unit 105, the received data demodulation unit 106, the data control unit 101, There is an interface between the transmission data modulation unit 102 and the data extraction unit 107 (not shown).

  The upper layer 108 includes a radio resource control unit 110 (also referred to as a control unit). Further, the radio resource control unit 110 manages various setting information, system information, paging control, communication state management of each mobile station device, mobility management such as handover, management of buffer status for each mobile station device, Management of unicast and multicast bearer connection settings, management of mobile station identifiers (UEID), and the like are performed. The upper layer 108 exchanges information with another base station apparatus and information with an upper node.

[Configuration of mobile station device]
FIG. 3 is a block diagram showing a schematic configuration of the mobile station apparatus 200 according to the embodiment of the present invention. The mobile station apparatus 200 includes a data control unit 201, a transmission data modulation unit 202, a radio unit 203, a scheduling unit 204, a channel estimation unit 205, a reception data demodulation unit 206, a data extraction unit 207, and an upper layer. 208 and an antenna 209. The data control unit 201, transmission data modulation unit 202, radio unit 203, scheduling unit 204, higher layer 208, and antenna 209 constitute a transmission unit, and the radio unit 203, scheduling unit 204, channel estimation unit 205, received data demodulation unit Unit 206, data extraction unit 207, upper layer 208, and antenna 209 constitute a reception unit.

  The data control unit 201, the transmission data modulation unit 202, and the radio unit 203 perform processing on the uplink physical layer. The radio unit 203, the channel estimation unit 205, the received data demodulation unit 206, and the data extraction unit 207 perform downlink physical layer processing.

  The data control unit 201 receives a transport channel from the scheduling unit 204. The transport channel and the signal and channel generated in the physical layer are mapped to the physical channel based on the scheduling information input from the scheduling unit 204. Each piece of data mapped in this way is output to transmission data modulation section 202.

  The transmission data modulation unit 202 modulates transmission data into the OFDM scheme and / or the SC-FDMA scheme. The transmission data modulation unit 202 performs data modulation, DFT (Discrete Fourier Transform) processing, subcarrier mapping, IFFT (Inverse Fast Fourier Transform) processing, CP insertion, filtering, and other signals on the data input from the data control unit 201. Processing is performed, transmission data is generated, and output to the wireless unit 203.

  Radio section 203 up-converts the modulation data input from transmission data modulation section 202 to a radio frequency, generates a radio signal, and transmits the radio signal to base station apparatus 100 via antenna 209. Radio section 203 receives a radio signal modulated with downlink data from base station apparatus 100 via antenna 209, down-converts it to a baseband signal, and receives the received data as channel estimation section 205. And output to the received data demodulation section 206.

  The scheduling unit 204 performs processing of a medium access control (MAC) layer. The scheduling unit 104 performs mapping between logical channels and transport channels, downlink and uplink scheduling (HARQ processing, selection of transport format, etc.), and the like. Since the scheduling unit 204 controls the processing units of each physical layer in an integrated manner, the scheduling unit 204, the antenna 209, the data control unit 201, the transmission data modulation unit 202, the channel estimation unit 205, the reception data demodulation unit 206, the data There is an interface between the extraction unit 207 and the wireless unit 203 (not shown).

  In downlink scheduling, the scheduling unit 204 controls reception of transport channels, physical signals, and physical channels based on scheduling information (transport format and HARQ retransmission information) from the base station apparatus 100 and the upper layer 208, and the like. Scheduling information used for HARQ retransmission control and downlink scheduling is generated. The scheduling information used for downlink scheduling is output to the data control unit 201.

  In uplink scheduling, the scheduling unit 204 receives the uplink buffer status input from the higher layer 208 and uplink scheduling information from the base station apparatus 100 input from the data extraction unit 207 (transport format and HARQ retransmission). Information), and scheduling processing for mapping the uplink logical channel input from the upper layer 208 to the transport channel and the uplink scheduling based on the scheduling information input from the upper layer 208, etc. Scheduling information to be generated is generated. Note that the information notified from the base station apparatus 100 is used for the uplink transport format. The scheduling information is output to the data control unit 201.

  Also, the scheduling unit 204 maps the uplink logical channel input from the higher layer 208 to the transport channel, and outputs it to the data control unit 201. Further, the scheduling unit 204 receives downlink channel state information CSI input from the channel estimation unit 205, downlink channel quality identifier CQI, precoding matrix identifier PMI, rank identifier RI, and data extraction unit 207. The confirmation result of the CRC check is also output to the data control unit 201. In addition, the scheduling unit 204 processes the control data and the transport channel acquired in the downlink input from the data extraction unit 207 as necessary, maps them to the downlink logical channel, and outputs them to the upper layer 208. To do.

  The channel estimation unit 205 estimates the downlink channel state from the downlink reference signal (RS) and demodulates the downlink data, and outputs the estimation result to the reception data demodulation unit 206. Further, the channel estimation unit 205 estimates the downlink channel state from the downlink reference signal (RS) in order to notify the base station apparatus 100 of the estimation result of the downlink channel state (radio channel state), This estimation result is output to scheduling section 204 as downlink channel state information CSI, downlink channel quality identifier CQI, precoding matrix identifier PMI, and rank identifier RI.

  Received data demodulation section 206 demodulates received data modulated by the OFDM method. Reception data demodulation section 206 performs demodulation processing on the modulated data input from radio section 203 based on the downlink channel state estimation result input from channel estimation section 205 and outputs the result to data extraction section 207. To do.

  The data extraction unit 207 performs a CRC check on the data input from the reception data demodulation unit 206, confirms whether the data is correct, and outputs a confirmation result (acknowledgment ACK / negative response NACK) to the scheduling unit 204. The data extraction unit 207 separates the data input from the reception data demodulation unit 206 into transport channel and physical layer control data, and outputs the data to the scheduling unit 204. The separated control data includes scheduling information such as downlink or uplink resource allocation and uplink HARQ control information.

  The upper layer 208 performs processing of a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a radio resource control (RRC) layer. The upper layer 208 integrates and controls the processing units of the lower layer, so that the upper layer 208, the scheduling unit 204, the antenna 209, the data control unit 201, the transmission data modulation unit 202, the channel estimation unit 205, the reception data demodulation unit 206, an interface between the data extraction unit 207 and the radio unit 203 exists (not shown).

  The upper layer 208 has a radio resource control unit 210 (also referred to as a control unit). The radio resource control unit 210 manages various setting information, system information, paging control, own station communication status, mobility management such as handover, buffer status management, unicast and multicast bearer connection setting. Management and management of mobile station identifier (UEID).

(First embodiment)
Next, a first embodiment in a mobile communication system using the base station apparatus 100 and the mobile station apparatus 200 will be described. In the first embodiment, the base station apparatus allocates a first physical uplink control channel (first PUCCH) for the mobile station apparatus to transmit the first control information to the mobile station apparatus, Each of the plurality of second physical uplink control channels (second PUCCH) for the mobile station apparatus to transmit the second control information is the same sub-frame as the subframe to which the first physical uplink control channel is assigned. The mobile station apparatus allocates the frame to the mobile station apparatus, and the mobile station apparatus selects any second physical uplink control channel from among the plurality of second physical uplink control channels, and selects the selected second physical uplink control channel. When the link control channel is arranged in an uplink carrier element different from the uplink carrier element in which the first physical uplink control channel is arranged, the first control And the second control information are transmitted to the base station apparatus, and the selected second physical uplink control channel is the same uplink carrier as the uplink carrier element in which the first physical uplink control channel is arranged. When arranged in the element, the second control information can be transmitted to the base station apparatus. For example, the base station apparatus can allocate a first PUCCH for transmitting the first control signal to the mobile station apparatus using a radio resource control signal (RRC signaling). Also, the base station apparatus, for example, assigns each of the plurality of second PUCCHs for transmitting the second control information to the mobile station apparatus in association with each PDCCH (physical downlink control channel). it can.
Here, the first control information transmitted from the mobile station apparatus to the base station apparatus is channel state information (CSI) indicating a downlink channel state transmitted (feedback) from the mobile station apparatus to the base station apparatus. included. Further, the first control information includes a scheduling request (SR) in which the mobile station apparatus requests allocation of resources for transmitting uplink data. Further, the first control information includes a channel quality identifier (CQI). The first control information includes a rank identifier (RI). Further, the first control information includes a precoding matrix identifier (PMI). Also, the second control information transmitted from the mobile station apparatus to the base station apparatus includes control information (control signal) in HARQ for the PDCCH and / or downlink transport block. That is, the second control information includes HARQ control information for PDCCH and / or downlink transport blocks transmitted using resources dynamically allocated by the base station apparatus. Further, the second control information includes control information in HARQ for the downlink transport block transmitted with resources continuously allocated by the base station apparatus. Here, the control information in HARQ is information indicating ACK / NACK and / or information indicating DTX for the PDCCH and / or downlink transport block. The information indicating DTX is information indicating that the mobile station apparatus cannot detect the PDCCH from the base station apparatus.

  In the present embodiment, the PUCCH that is permanently (permanently and periodically) assigned by the base station apparatus is, for example, a PUCCH (persistent: persistent) that is assigned at intervals of about 100 ms by RRC signaling from the base station apparatus. The base station apparatus and the mobile station apparatus secure the allocated PUCCH for a certain period (for example, a period of about 100 ms) and use the allocated PUCCH for data. Can be sent and received. On the other hand, the PUCCH dynamically allocated by the base station apparatus indicates, for example, a PUCCH that is associated with the PDCCH from the base station apparatus and is allocated at an interval of about 1 ms (also called PUCCH allocated to dynamic: Dynamic). )

  Hereinafter, in the present embodiment, the frequency band is defined by the bandwidth (Hz), but may be defined by the number of resource blocks (RB) configured by frequency and time. The carrier element in the present embodiment is used in combination in a mobile communication system having a (wideband) system band (frequency band) when the base station apparatus and the mobile station apparatus perform communication (narrowband). The frequency band is shown. The base station apparatus and the mobile station apparatus have a (wideband) system band (for example, 100 MHz bandwidth) by aggregating a plurality of carrier elements (for example, five frequency bands having a bandwidth of 20 MHz). (DL system band / UL system band) and a plurality of these carrier elements are used in combination to realize high-speed data communication (information transmission / reception).

  The carrier element is a (narrow band) frequency band (for example, 20 MHz bandwidth) that constitutes this (wide band) system band (for example, DL system band / UL system band having a bandwidth of 100 MHz). (Frequency band) shows each of them. That is, the downlink carrier element has a part of the frequency band that can be used when the base station apparatus and the mobile station apparatus transmit and receive downlink information, and the uplink carrier element is The base station device and the mobile station device have a part of the bandwidth that can be used when uplink information is transmitted and received. The carrier element may be defined as a unit in which a specific physical channel (for example, PDCCH, PUCCH, etc.) is configured.

  Further, the carrier element may be arranged in a continuous frequency band or a discontinuous frequency band, and the base station apparatus and the mobile station apparatus are continuous and / or discontinuous frequency bands. By consolidating a plurality of carrier elements, a wide system band (frequency band) is formed, and by using these multiple carrier elements in combination, high-speed data communication (information transmission / reception) can be realized. it can. Further, the downlink frequency band and the uplink frequency band configured by the carrier element do not need to have the same bandwidth, and the base station apparatus and the mobile station apparatus have different bandwidths configured by the carrier element. In addition, it is possible to perform communication by using the downlink frequency band and the uplink frequency band in combination (asymmetric carrier aggregation described above).

  FIG. 4 is a diagram illustrating an example of a mobile communication system to which the first embodiment can be applied. Hereinafter, the first embodiment will be described with respect to a mobile communication system subjected to symmetric frequency band aggregation (symmetric carrier aggregation) as shown in FIG. 4, but this embodiment has been subjected to asymmetric carrier band aggregation. The present invention can also be applied to a mobile communication system. FIG. 4 shows, as an example for explaining the present embodiment, a frequency band used for downlink communication having a bandwidth of 40 MHz, a downlink carrier element (DCC1) having a bandwidth of 10 MHz, and 10 MHz. It shows that it is composed of three downlink carrier elements, a downlink carrier element (DCC2) having a bandwidth and a downlink carrier element (DCC3) having a bandwidth of 20 MHz. In addition, as an example, the frequency band used for uplink communication having a bandwidth of 40 MHz is an uplink carrier element (UCC1) having a bandwidth of 10 MHz and an uplink carrier having a bandwidth of 10 MHz. It shows that it is composed of three uplink carrier elements: an element (UCC2) and an uplink carrier element (UCC3) having a bandwidth of 20 MHz. In FIG. 4, downlink / uplink channels such as PDCCH, PDSCH, PUCCH, and PUSCH are arranged in each of the downlink / uplink carrier elements (downlink / uplink such as PDCCH, PDSCH, PUCCH, and PUSCH). There may be a downlink / uplink carrier element in which any of the channels of the link is not arranged). In FIG. 4, the bandwidth of the downlink / uplink carrier element is 10 MHz and 20 MHz, respectively, as an example, but what is the bandwidth of the downlink / uplink carrier element? May be.

  In FIG. 4, the base station apparatus moves PUCCH (first PUCCH, second PUCCH) for transmitting uplink control information (first control information, second control information) by the mobile station apparatus. It can be assigned to a station device. For example, the base station apparatus can allocate the first PUCCH for transmitting the first control information to the base station apparatus persistently (permanently, periodically) using RRC signaling (mobile The first PUCCH can be allocated persistently to the station device). In FIG. 4, the base station apparatus allocates a PUCCH (PUCCH indicated by a horizontal line) in UCC3 for transmitting the first control information to the mobile station apparatus using RRC signaling. It shows that.

  In addition, the base station apparatus can allocate the second PUCCH for the mobile station apparatus to transmit the second control information in association with the PDCCH. For example, the base station apparatus can dynamically allocate the second PUCCH for transmitting control information in HARQ for the PDCCH and / or downlink transport block in association with the PDCCH by the mobile station apparatus ( The second PUCCH can be dynamically assigned to the mobile station device). That is, the base station apparatus may allocate (instruct) the second PUCCH to the mobile station apparatus in association with the position in the PDCCH resource (PDCCH resource area) of the PDCCH arranged in the downlink carrier element. it can. Depending on how the PDCCH arranged in the downlink carrier element is arranged in the PDCCH resource (PDCCH resource area), the mobile station apparatus uses the second PUCCH resource (PUCCH resource area). 2nd control information is arrange | positioned to PUCCH, and it transmits to a base station apparatus. Here, the correspondence between each PDCCH arranged in the downlink carrier element and each second PUCCH arranged in the uplink carrier element is, for example, the CCE index at the head of the CCE constituting each PDCCH And the second PUCCH index corresponding to each second PUCCH index (in FIG. 4, the CCE index at the head of the CCE constituting the PDCCH indicated by hatching and the second PUCCH index indicated by hatching). The CCE index at the head of the CCE constituting the PDCCH indicated by the grid line and the index of the second PUCCH indicated by the grid line, the CCE index at the head of the CCE constituting the PDCCH indicated by the network line, and the network line The second PUCCH index is supported It shows the door). In FIG. 4, the base station apparatus has a plurality of (three) second PUCCHs (indicated by hatched PUCCHs) in UCC1, UCC2 and UCC3 for the mobile station apparatus to transmit the second control information. PUCCH indicated by a grid line and PUCCH indicated by a network line) are dynamically allocated to the mobile station apparatus in the same subframe.

  Here, in FIG. 4, as an example, one PDCCH is described as being arranged in one downlink carrier element, but a plurality of PDCCHs are included in one downlink carrier element. May be arranged. Also, in FIG. 4, as an example, PDCCH is described as having a PDSCH allocated in the same carrier element as a downlink carrier element in which PDCCH is allocated, but PDCCH is allocated with PDCCH. PDSCH arranged in a carrier element different from the downlink carrier element assigned may be assigned (for example, the PDCCH arranged in DCC1 may be assigned the PDSCH arranged in DCC3). In addition, PDCCH assigns PUSCH arranged in an uplink carrier element corresponding to a downlink carrier element in which PDCCH is arranged, or uplink uplink corresponding to a downlink carrier element in which PDCCH is arranged. A PUSCH arranged in an uplink carrier element different from the carrier element can also be assigned (for example, even if a PDCCH arranged in DCC1 is assigned a PUSCH arranged in UCC1, a PDCCH arranged in DCC1 is allocated). , PUSCH arranged in UCC3 may be assigned).

  In FIG. 4, the base station apparatus uses a plurality of PDCCHs to allocate a plurality of PDSCHs to the same subframe, and transmits control information (resource allocation information, MCS information, HARQ processing) for transmitting a plurality of downlink transport blocks. Information etc.) can be transmitted to the mobile station apparatus. Further, the base station apparatus can transmit a plurality of downlink transport blocks to the mobile station apparatus in the same subframe using a plurality of PDSCHs. For example, the base station apparatus assigns the PDSCH arranged in DCC1 using the PDCCH arranged in DCC1 (PDCCH indicated by oblique lines), and uses the PDCCH arranged in DCC2 (PDCCH indicated by grid lines). Then, the PDSCH arranged in the DCC 2 can be allocated, and the PDSCH arranged in the DCC 3 can be allocated using the PDCCH arranged in the DCC 3 (PDCCH indicated by a network line). Furthermore, the base station apparatus can transmit (up to three) downlink transport blocks to the mobile station apparatus in the same subframe using PDSCH arranged in DCC1, DCC2, and DCC3.

  In FIG. 4, the mobile station apparatus transmits uplink control information (first control information, second control information) to the base station apparatus using the PUCCH and / or PUSCH allocated by the base station apparatus. be able to. For example, the mobile station apparatus can periodically transmit channel state information (first control information) using the first PUCCH assigned by the base station apparatus. Also, for example, the mobile station apparatus uses the first PUCCH allocated by the base station apparatus, and uses CQI (first control information), PMI (first control information), RI (first control information). ) Can be transmitted periodically. Also, for example, the mobile station apparatus uses the first PUCCH allocated by the base station apparatus to request a scheduling request (first control information) and allocation of resources for transmitting uplink data. Can be sent when.

  Further, the mobile station apparatus uses the second PUCCH allocated by the base station apparatus to control information (first) in HARQ for a plurality of PDCCHs and / or a plurality of downlink transport blocks transmitted in the same subframe. 2 control information, hereinafter also referred to as control information in HARQ). Here, the control information (second control information) in HARQ includes control information in HARQ for one PDCCH and / or one downlink transport block. Also, the control information in HARQ includes control information in HARQ for PDCCH and / or downlink transport blocks transmitted using resources dynamically allocated by the base station apparatus. Also, the control information in HARQ includes control information in HARQ for the downlink transport block transmitted with resources continuously allocated by the base station apparatus.

  Here, the mobile station apparatus that transmits the control information (second control information) in HARQ to the base station apparatus multiplexes the control information (second control information) in HARQ (multiplexing using a plurality of bits). Can be transmitted to the base station apparatus. That is, the mobile station apparatus multiplexes control information in HARQ for a plurality of PDCCHs and / or a plurality of downlink transport blocks, and transmits control information in HARQ for each of the plurality of PDCCHs and / or a plurality of downlink transport blocks. It can be transmitted to the base station apparatus as a plurality of control information expressing all the combinations (it can also be transmitted using a plurality of control information below the information necessary for expressing all the combinations). In FIG. 4, for example, the mobile station apparatus expresses all combinations of information indicating DTX / ACK / NACK for each of a plurality of PDCCHs and / or a plurality of downlink transport blocks using a plurality of bits, and Can be sent to the device.

  Furthermore, when the mobile station apparatus multiplexes control information (second control information) in HARQ and transmits the multiplexed information to the base station apparatus, the mobile station apparatus selects any one of the plurality of second PUCCHs allocated by the base station apparatus. The second PUCCH can be selected (used) and transmitted to the base station apparatus (for example, any one of the plurality of second PUCCHs allocated by the base station apparatus) And 1-bit or 2-bit information can be transmitted to the base station apparatus using the selected second PUCCH). That is, the mobile station apparatus selects which second PUCCH among the plurality of second PUCCHs defined according to how the plurality of PDCCHs are arranged in the PDCCH resource (PDCCH resource region). Depending on whether the second control information is transmitted using the channel (selecting the channel for the second PUCCH), information including several bits can be further transmitted to the base station apparatus (second Depending on which second PUCCH area is used to transmit the second control information in the area where the PUCCH can be arranged, information of several bits can be further transmitted to the base station apparatus. ). In FIG. 4, for example, when the mobile station apparatus can transmit 2-bit information (four types of information) on each of the three second PUCCHs, the mobile station apparatus further determines which second of the three second PUCCHs. It is possible to transmit a total of 12 types of information to the base station apparatus depending on whether the PUCCH is used (by performing channel selection for three second PUCCHs).

  FIG. 5 illustrates the operation of the mobile station apparatus when the first PUCCH and the second PUCCH are assigned to the same subframe by the base station apparatus. As described above, in the base station apparatus, the mobile station apparatus can assign the first PUCCH for transmitting the first control information to the mobile station apparatus. In FIG. 5, the base station apparatus has shown that the mobile station apparatus has allocated 1st PUCCH (PUCCH shown with a horizontal line) in UCC3 for transmitting 1st control information. In addition, the base station apparatus transmits a plurality of second PUCCHs for the mobile station apparatus to transmit the second control information to the mobile station apparatus in the same subframe as the subframe to which the first PUCCH is allocated. Can be assigned. In FIG. 5, the base station apparatus allocates the second PUCCH in UCC1, UCC2, and UCC3 as a plurality of second PUCCHs for transmitting the second control information by the mobile station apparatus, respectively. It is shown that. The mobile station apparatus to which the plurality of second PUCCHs are assigned by the base station apparatus selects one of the plurality of second PUCCHs, and uses the selected second PUCCH. The second control information is transmitted to the base station apparatus. FIG. 5 shows that the mobile station apparatus has selected the second PUCCH (PUCCH indicated by hatching) in the UCC 1 as the second PUCCH when transmitting the second control information.

  That is, in FIG. 5, the mobile station apparatus indicates that the second PUCCH arranged in the uplink carrier element (UCC1) different from the uplink carrier element (UCC3) in which the first PUCCH is arranged is selected. Yes. At this time, the mobile station apparatus can transmit both the first control information and the second control information to the base station apparatus in the same subframe (can be transmitted simultaneously). In FIG. 5, the mobile station apparatus uses the first PUCCH (PUCCH indicated by a horizontal line) and the second PUCCH (PUCCH indicated by an oblique line) to transmit both the first control information and the second control information. It indicates that transmission is being performed to the base station apparatus (representing simultaneous transmission of a plurality of PUCCHs).

  Similarly, FIG. 6 illustrates the operation of the mobile station apparatus when the first PUCCH and the second PUCCH are assigned to the same subframe by the base station apparatus. In FIG. 6, the base station apparatus allocates the first PUCCH in UCC3 for the mobile station apparatus to transmit the first control information. Further, the base station apparatus allocates the second PUCCH in UCC1, UCC2, and UCC3 as a plurality of second PUCCHs for transmitting the second control information by the mobile station apparatus. The mobile station apparatus to which the plurality of second PUCCHs are assigned by the base station apparatus selects one of the plurality of second PUCCHs, and uses the selected second PUCCH. The second control information is transmitted to the base station apparatus. FIG. 6 shows that the mobile station apparatus has selected the second PUCCH (PUCCH indicated by a network line) in the UCC 3 as the second PUCCH when transmitting the second control information.

  That is, in FIG. 6, the mobile station apparatus has selected the second PUCCH arranged in the same uplink carrier element (UCC3) as the uplink carrier element (UCC3) in which the first PUCCH is arranged. ing. At this time, the mobile station apparatus can transmit the second control information to the base station apparatus without transmitting (dropping) the first control information. In FIG. 6, the mobile station apparatus transmits only the second control information to the base station apparatus using the second PUCCH (PUCCH indicated by a network line) without transmitting the first control information. (Indicating that a single PUCCH is being transmitted).

  Here, the second control information transmitted from the mobile station apparatus to the base station apparatus is uplink control information having a higher priority (importance) than the first control information (set higher). It is said. The high priority of the uplink control information means that the (target) error occurrence rate when the base station apparatus and the mobile station apparatus transmit / receive uplink control information is set lower. That is, for example, control information (second control information) in HARQ transmitted from the mobile station apparatus to the base station apparatus has higher priority than downlink channel state information (first control information). Yes. In addition, for example, control information (second control information) in HARQ transmitted from the mobile station apparatus to the base station apparatus has a higher priority than the scheduling request (first control information). That is, a mobile station apparatus to which a first PUCCH for transmitting first control information and a plurality of second PUCCHs for transmitting second control information are allocated by a base station apparatus are a plurality of second PUCCHs. When any second PUCCH is selected from the two PUCCHs, and the selected second PUCCH is arranged in the same uplink carrier element as the uplink carrier element in which the first PUCCH is arranged The uplink control information with high priority can be transmitted to the base station apparatus.

  As described above, the mobile station apparatus selects any second PUCCH from among the plurality of second PUCCHs, and the selected second PUCCH is an uplink in which the first PUCCH is arranged. When it is arranged in an uplink carrier element different from the carrier element, both the first control information and the second control information are transmitted to the base station apparatus, and the selected second PUCCH is the first PUCCH. If the uplink carrier element is arranged in the same uplink carrier element as the arranged uplink carrier element, the second control information is transmitted to the base station apparatus. That is, the mobile station apparatus transmits according to the second PUCCH selected when transmitting the second control information (according to the channel selection for the second PUCCH (according to the channel selection result)). Uplink control information (first control information, second control information) can be switched and transmitted to the base station apparatus. That is, the mobile station apparatus has single carrier characteristics in each uplink uplink carrier element (in UCC1, UCC2, and UCC3) according to the second PUCCH selected when transmitting the second control information. So that uplink control information to be transmitted to the base station apparatus can be switched. In FIG. 6, the mobile station apparatus transmits only the second control information to the base station apparatus without transmitting (dropping) the first control information so that the single carrier characteristic can be maintained in the UCC 3. It shows that you are doing.

  FIG. 7 illustrates a case where a mobile station apparatus to which the first PUCCH and the second PUCCH are allocated in the same subframe transmits uplink control information (first control information and second control information). The operation when the PUSCH is assigned by the station apparatus will be described. For example, the base station apparatus can allocate PUSCH to the mobile station apparatus using an uplink transmission permission signal. As described above, the mobile station apparatus to which the first PUCCH and the plurality of second PUCCHs are allocated from the base station apparatus selects one of the plurality of second PUCCHs. Then, according to the selection, the uplink control information to be transmitted (first control information, second control information) is switched and the uplink control information is transmitted to the base station apparatus. At this time, the mobile station apparatus to which the PUSCH has been allocated by the base station apparatus transmits to the base station apparatus in the same subframe together with the first control information and the second control information using the allocated PUSCH. Can do. In FIG. 7, for example, the mobile station apparatus to which the PUSCH in the UCC 3 is allocated by the base station apparatus transmits both the first control information and the second control information using the allocated PUSCH. It is shown that. For example, the mobile station apparatus transmits the first control information that is to be transmitted on the first PUCCH in UCC3 and the second control information that is to be transmitted on the second PUCCH in UCC3 (second control information in UCC3). The same (equivalent) control information as the second control information to be transmitted on the PUCCH may be transmitted to the base station apparatus together.

  As described above, when the base station apparatus and the mobile station apparatus perform communication in a wide frequency band by using the carrier element in combination, the base station apparatus includes the first PUCCH, 2 PUCCHs are allocated to the same subframe to the mobile station apparatus, the mobile station apparatus selects any second PUCCH from the plurality of second PUCCHs, and the selected second PUCCH is When it is arranged in an uplink carrier element different from the uplink carrier element in which one PUCCH is arranged, both the first control information and the second control information are transmitted to the base station apparatus, and the selected second When the PUCCH is allocated to the same uplink carrier element as the uplink carrier element in which the first PUCCH is allocated, the second control information is transmitted to the base station apparatus. Thus, it is possible to maintain single carrier characteristics within each uplink carrier element (UCC1, UCC2, UCC3), and transmission of data (information) with low transmission power in the mobile station apparatus can be performed. It can be carried out. The mobile station apparatus performs transmission on the first PUCCH and transmission on the second PUCCH only with different uplink carrier elements, thereby simultaneously transmitting a plurality of PUCCHs with low transmission power in the mobile station apparatus. It can be carried out. Also, the mobile station apparatus to which the PUSCH is assigned by the base station apparatus transmits both the first control information and the second control information using the PUSCH, so that the PUSCH and It is possible to transmit data (information) with the transmission power in the mobile station apparatus kept low without performing simultaneous transmission of PUCCH. Furthermore, since the mobile station apparatus to which the PUSCH is assigned by the base station apparatus can transmit both the first control information and the second control information (without dropping the first control information), the base station apparatus More efficient transmission control (scheduling) can be performed.

Here, in the first embodiment, in order to make the explanation easy to understand, the base station apparatus transmits one first PUCCH for the mobile station apparatus to transmit the first control information to the mobile station apparatus. However, the base station apparatus can also allocate a plurality of first PUCCHs to the mobile station apparatus in the same subframe. Moreover, although the base station apparatus has described that the mobile station apparatus allocates several 2nd PUCCH for transmitting 2nd control information with respect to a mobile station apparatus, a base station apparatus Even when one second PUCCH is allocated, the mobile station apparatus can perform the operation as described above.
(Second Embodiment)
Next, a second embodiment of the present invention will be described. In the second embodiment, the base station device uses the specific one or more uplinks for the mobile station device to transmit the uplink control information using a single physical uplink control channel (PUCCH). Information indicating the carrier element is transmitted to the mobile station apparatus, the mobile station apparatus assigns the first PUCCH for transmitting the first control information to the mobile station apparatus, and the mobile station apparatus Each of the plurality of second PUCCHs for transmitting control information is allocated to the mobile station apparatus in the same subframe as the subframe to which the first PUCCH is allocated, and the mobile station apparatus transmits the plurality of second PUCCHs. Any one of the second PUCCHs is selected, and the selected second PUCCH is arranged in an uplink carrier element different from the specific one or more uplink carrier elements. The first control information and the second control information are transmitted to the base station apparatus, and the selected second PUCCH is the same uplink carrier as the specific one or more uplink carrier elements. When arranged in the element, the second control information can be transmitted to the base station apparatus.

  In addition, when the PUSCH in one or more specific uplink carrier elements specified by the base station apparatus is allocated, the mobile station apparatus transmits both the first control information and the second control information. It transmits to a base station apparatus using allocated PUSCH. That is, when the PUSCH is assigned by the base station apparatus, the mobile station apparatus can transmit both the first control information and the second control information to the base station apparatus using the PUSCH. The rest is the same as in the first embodiment.

  FIG. 8 is a diagram illustrating an example of a mobile communication system to which the second embodiment can be applied. In FIG. 8, the base station apparatus transmits information for setting one or more specific uplink carrier elements for the mobile station apparatus to transmit uplink control information using a single PUCCH. Can be sent to. For example, the base station apparatus can instruct UCC1 and UCC2 to the mobile station apparatus as uplink carrier elements for the mobile station apparatus to transmit uplink control information using a single PUCCH. (The mobile station apparatus can be instructed to transmit uplink control information using a single PUCCH in UCC1 and UCC2). The base station apparatus includes, for example, information for setting one or more specific uplink carrier elements for transmitting uplink control information using a single PUCCH in the RRC signaling to the mobile station apparatus. Can be sent. The mobile station apparatus that has received this information from the base station apparatus transmits uplink control information using a single PUCCH within the uplink carrier element indicated by the base station apparatus.

  In FIG. 8, the base station apparatus can continuously allocate the first PUCCH for the mobile station apparatus to transmit the first control information to the mobile station apparatus. In FIG. 8, for example, the base station apparatus indicates that the first PUCCH (PUCCH indicated by a horizontal line) arranged in the UCC 2 is allocated to the mobile station apparatus using RRC signaling. . Also, the base station apparatus can dynamically allocate a plurality of second PUCCHs for the mobile station apparatus to transmit the second control information to the mobile station apparatus in the same subframe. In FIG. 8, for example, the base station apparatus assigns each second PUCCH (PUCCH indicated by diagonal lines, PUCCH indicated by grid lines, PUCCH indicated by network lines) in UCC1, UCC2 and UCC3 to PDCCH. This indicates that the mobile station apparatus is dynamically allocated to the same subframe.

  FIG. 9 illustrates a case where a mobile station apparatus in which specific one or more uplink carrier elements for transmitting uplink control information using a single PUCCH are indicated by the base station apparatus The operation when the PUCCH and the second PUCCH are assigned will be described. In FIG. 9, as an example, the base station apparatus instructs the mobile station apparatus to transmit uplink control information using a single PUCCH in UCC1 and UCC2. In FIG. 9, the mobile station apparatus allocates the first PUCCH (PUCCH indicated by a horizontal line) in UCC2 for transmitting the first control information to the base station apparatus. Further, the base station apparatus allocates the second PUCCH in UCC1, UCC2, and UCC3 as a plurality of second PUCCHs for transmitting the second control information by the mobile station apparatus. The mobile station apparatus to which the plurality of second PUCCHs are assigned by the base station apparatus selects one of the plurality of second PUCCHs, and uses the selected second PUCCH. The second control information is transmitted to the base station apparatus. FIG. 9 shows that the mobile station apparatus has selected the second PUCCH (PUCCH indicated by a network line) in the UCC 3 as the second PUCCH when transmitting the second control information.

  That is, in FIG. 9, the mobile station apparatus has selected the second PUCCH arranged in an uplink carrier element (UCC3) different from the uplink carrier elements (UCC1, UCC2) indicated by the base station apparatus. ing. At this time, the mobile station apparatus can transmit both the first control information and the second control information to the base station apparatus in the same subframe (can be transmitted simultaneously). In FIG. 9, the mobile station apparatus uses the first PUCCH (PUCCH indicated by a horizontal line) and the second PUCCH (PUCCH indicated by a network line) to transmit first control information and second control information. Both indicate transmission to the base station device (indicating simultaneous transmission of a plurality of PUCCHs). That is, the mobile station apparatus transmits uplink control information using a single PUCCH in the uplink carrier elements (UCC1, UCC2) indicated by the base station apparatus.

  Similarly, FIG. 10 shows that a mobile station apparatus in which specific one or more uplink carrier elements for transmitting uplink control information using a single PUCCH are set by the base station apparatus, The operation when the first PUCCH and the second PUCCH are assigned will be described. In FIG. 10, as an example, the base station apparatus instructs the mobile station apparatus to transmit uplink control information using a single PUCCH in UCC1 and UCC2. In FIG. 10, in the base station apparatus, the mobile station apparatus assigns the first PUCCH in UCC2 for transmitting the first control information. Further, the base station apparatus allocates the second PUCCH in UCC1, UCC2, and UCC3 as a plurality of second PUCCHs for transmitting the second control information by the mobile station apparatus. The mobile station apparatus to which the plurality of second PUCCHs are assigned by the base station apparatus selects one of the plurality of second PUCCHs, and uses the selected second PUCCH. The second control information is transmitted to the base station apparatus. FIG. 10 shows that the mobile station apparatus has selected the second PUCCH (PUCCH indicated by diagonal lines) in the UCC 1 as the second PUCCH when transmitting the second control information.

  That is, in FIG. 10, the mobile station apparatus has the same uplink as that in the uplink carrier elements (UCC1, UCC2) instructed to transmit uplink control information using a single PUCCH by the base station apparatus. It shows that the second PUCCH arranged in the carrier element (UCC1 in this example) is selected. At this time, the mobile station apparatus can transmit the second control information to the base station apparatus without transmitting (dropping) the first control information. In FIG. 10, the mobile station apparatus transmits only the second control information to the base station apparatus without transmitting the first control information using the second PUCCH (the PUCCH indicated by hatching). It shows that. That is, the mobile station apparatus transmits uplink control information using a single PUCCH in the uplink carrier elements (UCC1, UCC2) indicated by the base station apparatus.

  As described above, the mobile station apparatus selects any second PUCCH from the plurality of second PUCCHs, and the selected second PUCCH is the uplink instructed by the base station apparatus. When arranged in an uplink carrier element different from the carrier element, both the first control information and the second control information are transmitted to the base station apparatus, and the selected second PUCCH is instructed by the base station apparatus. If the uplink carrier element is arranged in the same uplink carrier element, the second control information is transmitted to the base station apparatus. That is, the mobile station apparatus determines whether the second PUCCH selected when transmitting the second control information is arranged in the uplink carrier element indicated by the base station apparatus (second PUCCH The uplink control information (first control information, second control information) to be transmitted can be switched and transmitted to the base station apparatus according to the channel selection for (depending on the channel selection result).

  That is, the base station apparatus instructs the mobile station apparatus to specify one or more uplink carrier elements for transmitting uplink control information using a single PUCCH. An uplink carrier element for transmitting uplink control information while maintaining single carrier characteristics can be indicated. FIG. 10 shows that the base station apparatus instructs the mobile station apparatus to transmit uplink control information while maintaining single carrier characteristics in UCC1 and UCC2.

  FIG. 11 illustrates the operation when the PUSCH is allocated by the base station apparatus when the mobile station apparatus transmits uplink control information (first control information, second control information). It is. As described above, the mobile station apparatus to which the first PUCCH and the plurality of second PUCCHs are allocated from the base station apparatus selects one of the plurality of second PUCCHs. Then, according to the selection, the uplink control information to be transmitted is switched and the uplink control information is transmitted to the base station apparatus. At this time, the mobile station apparatus to which the PUSCH has been allocated by the base station apparatus transmits to the base station apparatus in the same subframe together with the first control information and the second control information using the allocated PUSCH. Can do. In FIG. 11, for example, the mobile station apparatus to which the PUSCH in the UCC 3 is allocated by the base station apparatus transmits both the first control information and the second control information using the allocated PUSCH. It is shown that. For example, the mobile station apparatus transmits the first control information that is to be transmitted on the first PUCCH in UCC2 and the second control information that is to be transmitted on the second PUCCH in UCC1 (the second control information in UCC1). (Same control information as (similar to) the second control information to be transmitted on the PUCCH) may be transmitted to the base station apparatus together.

  FIG. 12 shows another example of the operation when the PUSCH is allocated by the base station apparatus when the mobile station apparatus transmits the uplink control information (first control information, second control information). Explain. In FIG. 12, the base station apparatus instructs the mobile station apparatus to transmit uplink control information using a single PUCCH in UCC1 and UCC2. Furthermore, in FIG. 12, the base station apparatus allocates PUSCH in UCC2 and PUSCH in UCC3 to the mobile station apparatus in the same subframe. That is, the base station apparatus allocates a PUSCH (in this example, a PUSCH in UCC2) in an uplink carrier element (UCC1, UCC2) instructed to transmit uplink control information using a single PUCCH. ing. At this time, the mobile station apparatus uses a PUSCH arranged in an uplink carrier element instructed to transmit uplink control information using a single PUCCH among PUSCHs allocated by the base station apparatus. Thus, both the first control information and the second control information can be transmitted to the base station apparatus in the same subframe. In FIG. 12, for example, a mobile station apparatus in which the PUSCH in UCC2 and the PUSCH in UCC3 are allocated to the same subframe by the base station apparatus uses the PUSCH in UCC2 and the first control information and 2 indicates that the control information 2 is transmitted together. For example, the mobile station apparatus transmits the first control information that is to be transmitted on the first PUCCH in UCC2 and the second control information that is to be transmitted on the second PUCCH in UCC1 (the second control information in UCC1). (Same control information as (similar to) the second control information to be transmitted on the PUCCH) may be transmitted to the base station apparatus together.

  As described above, when a base station apparatus and a mobile station apparatus perform communication in a wide frequency band using a composite of carrier elements, the base station apparatus uses a single PUCCH. Information indicating an uplink carrier element for transmitting uplink control information is transmitted to the mobile station apparatus, the first PUCCH and a plurality of second PUCCHs are allocated to the mobile station apparatus, and the mobile station apparatus One of the second PUCCHs is selected from the plurality of second PUCCHs, and the selected second PUCCH is arranged in an uplink carrier element different from the uplink carrier element instructed by the base station apparatus. In this case, both the first control information and the second control information are transmitted to the base station apparatus, and the selected second PUCCH is an uplink carrier element indicated by the base station apparatus. When arranged in the same uplink carrier element, by transmitting the second control information to the base station apparatus, the single carrier characteristics are maintained in the uplink carrier element instructed by the base station apparatus. Therefore, it is possible to transmit data (information) with low transmission power in the mobile station apparatus. The base station apparatus instructs the mobile station apparatus to use an uplink carrier element for transmitting uplink control information using a single PUCCH, so that the mobile station apparatus maintains the single carrier characteristics and performs uplink control. It is possible to indicate an uplink carrier element for transmitting information, and it is possible to flexibly control transmission of a plurality of PUCCHs in consideration of transmission power in the mobile station apparatus.

  In addition, the mobile station apparatus transmits the first control information and the second control information together using the PUSCH in the uplink carrier element instructed by the base station apparatus, whereby the instructed uplink carrier It is possible to transmit data (information) with low transmission power in the mobile station apparatus without simultaneously transmitting PUSCH and PUCCH within the element. Further, the mobile station apparatus to which the PUSCH is assigned by the base station apparatus transmits the first control information and the second control information together (without dropping the first control information), so that the base station apparatus Thus, more efficient transmission control (scheduling) can be performed. The base station apparatus can perform more efficient transmission control (scheduling).

Here, in the second embodiment, in order to make the explanation easy to understand, the base station apparatus transmits one first PUCCH for the mobile station apparatus to transmit the first control information to the mobile station apparatus. However, the base station apparatus can also allocate a plurality of first PUCCHs to the mobile station apparatus in the same subframe. Moreover, although the base station apparatus has described that the mobile station apparatus allocates several 2nd PUCCH for transmitting 2nd control information with respect to a mobile station apparatus, a base station apparatus Even when one second PUCCH is allocated, the mobile station apparatus can perform the operation as described above.
(Third embodiment)
Next, a third embodiment of the present invention will be described. In the third embodiment, the base station apparatus assigns a first PUCCH for transmitting the first control information to the mobile station apparatus and transmits a plurality of second control information. Each second PUCCH is allocated to the mobile station apparatus in the same subframe as the subframe to which the first PUCCH is allocated, and the mobile station apparatus selects any second PUCCH from among the plurality of second PUCCHs When the selected second PUCCH is arranged in an uplink carrier element different from the uplink carrier element in which the first PUCCH is arranged, the first control information and the second control information are both When the second PUCCH selected and transmitted to the base station apparatus is arranged in the same uplink carrier element as the uplink carrier element in which the first PUCCH is arranged The first control information using a first antenna, and transmits both to the base station apparatus and the second control information using the second antenna.

  That is, in the base station apparatus, the mobile station apparatus allocates the first PUCCH for transmitting the first control information to the mobile station apparatus. Further, the base station apparatus transmits a plurality of second PUCCHs for the mobile station apparatus to transmit the second control information to the mobile station apparatus in the same subframe as the subframe to which the first PUCCH is allocated. Assign. The mobile station apparatus to which the plurality of second PUCCHs are assigned by the base station apparatus selects one of the plurality of second PUCCHs, and uses the selected second PUCCH. The second control information is transmitted to the base station apparatus.

  Here, when the mobile station apparatus selects the second PUCCH, when selecting the second PUCCH arranged in an uplink carrier element different from the uplink carrier element in which the first PUCCH is arranged, Both the first control information and the second control information can be transmitted to the base station apparatus. Further, when the mobile station apparatus selects the second PUCCH, when the second PUCCH selected in the same uplink carrier element as the uplink carrier element in which the first PUCCH is selected is selected. The first control information can be transmitted to the base station apparatus in the same subframe by using the first antenna and the second control information can be transmitted using the second antenna (simultaneous transmission). Is possible). For example, when the mobile station apparatus selects the second PUCCH and selects the second PUCCH arranged in the same uplink carrier element as the uplink carrier element in which the first PUCCH is arranged, The channel state information can be transmitted to the base station apparatus using the first antenna and the HARQ control information can be transmitted using the second antenna. For example, when the mobile station apparatus selects the second PUCCH, the mobile station apparatus selects the second PUCCH arranged in the same uplink carrier element as the uplink carrier element in which the first PUCCH is arranged. In this case, the scheduling request can be transmitted to the base station apparatus using the first antenna and the HARQ control information can be transmitted using the second antenna.

  That is, the mobile station apparatus determines the uplink according to the second PUCCH selected when transmitting the second control information (according to the channel selection for the second PUCCH (according to the channel selection result)). The transmission method when transmitting control information (first control information and second control information) can be switched and transmitted to the base station apparatus. The mobile station apparatus maintains the single carrier characteristics by transmitting the first control information and the second control information for each antenna according to the second PUCCH selected when transmitting the second control information. The uplink control information can be transmitted as possible.

  As described above, when the base station apparatus and the mobile station apparatus perform communication in a wide frequency band by using the carrier element in combination, the base station apparatus includes the first PUCCH, 2 PUCCHs are allocated to the mobile station apparatus, the mobile station apparatus selects any second PUCCH from the plurality of second PUCCHs, and the selected second PUCCH is the first PUCCH. When arranged in the arranged uplink carrier element, both the first control information and the second control information are transmitted to the base station apparatus, and the selected second PUCCH is arranged in the first PUCCH. If the same uplink carrier element is allocated to the same uplink carrier element, the first antenna is used for the first control information and the second antenna is used for the second control information. Base station equipment By transmitting, in the mobile station apparatus, it is possible to perform transmission of uplink control information to maintain a single carrier property, it is possible to perform the transmission of the suppressed low data transmission power (information). The mobile station apparatus transmits the first control information and the second control information for each antenna to the base station apparatus according to the second PUCCH selected when transmitting the second control information. It is possible to transmit uplink control information while maintaining carrier characteristics, and it is possible to transmit data (information) with low transmission power in the mobile station apparatus.

  Here, the third embodiment can also be applied to the second embodiment. That is, the base station apparatus transmits information indicating an uplink carrier element for the mobile station apparatus to transmit uplink control information using a single PUCCH, and the mobile station apparatus performs the first control. A first PUCCH for transmitting information is allocated to the mobile station apparatus, and a plurality of second PUCCHs for transmitting second control information are assigned to the same subframe as the subframe to which the first PUCCH is allocated. Assigned to the mobile station apparatus, the mobile station apparatus selects any second PUCCH from the plurality of second PUCCHs, and the selected second PUCCH is an uplink carrier element indicated by the base station apparatus. 1 is transmitted to the base station apparatus together with the selected second PUCC, when the second PUCC is arranged on a different uplink carrier element. Is arranged in the same uplink carrier element as the uplink carrier element instructed by the base station apparatus, the first control information is used for the second control information using the first antenna. Both can be transmitted to the base station apparatus using the second antenna.

  The base station apparatus indicates an uplink carrier element for transmitting uplink control information using a single PUCCH, and the mobile station apparatus selects the second control information selected when transmitting the second control information. According to the PUCCH, by transmitting the first control information and the second control information for each antenna to the base station apparatus, it is possible to maintain single carrier characteristics in the uplink carrier element indicated by the base station apparatus. This enables transmission of data (information) with low transmission power in the mobile station apparatus. The base station apparatus instructs the mobile station apparatus to use an uplink carrier element for transmitting uplink control information using a single PUCCH, so that the mobile station apparatus maintains the single carrier characteristics and performs uplink control. It is possible to indicate an uplink carrier element for transmitting information, and it is possible to flexibly control transmission of a plurality of PUCCHs in consideration of transmission power in the mobile station apparatus.

  The embodiment described above is also applied to an integrated circuit mounted on a base station apparatus and a mobile station apparatus. Further, in the embodiment described above, each function in the base station device and a program for realizing each function in the mobile station device are recorded on a computer-readable recording medium and recorded on this recording medium. The base station apparatus and the mobile station apparatus may be controlled by causing the computer system to read and execute the program. Here, the “computer system” includes an OS and hardware such as peripheral devices.

  The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Further, the “computer-readable recording medium” dynamically holds a program for a short time, like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, it is also assumed that a server that holds a program for a certain time, such as a volatile memory inside a computer system that serves as a server or client. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and the design and the like within the scope of the present invention are also within the scope of the claims. include.

100 base station apparatus 101 data control section 102 transmission data modulation section 103 radio section 104 scheduling section 105 channel estimation section 106 reception data demodulation section 107 data extraction section 108 upper layer 109 antenna 110 radio resource control section 200 mobile station apparatus 201 data control section 202 Transmission data modulation section 203 Radio section 204 Scheduling section 205 Channel estimation section 206 Reception data demodulation section 207 Data extraction section 208 Upper layer 209 Antenna 210 Radio resource control section

Claims (15)

A mobile communication system in which a base station apparatus and a mobile station apparatus communicate using a plurality of carrier elements,
The base station device
The mobile station apparatus allocates a first physical uplink control channel for transmitting first control information to the mobile station apparatus;
The mobile station apparatus moves each of a plurality of second physical uplink control channels for transmitting second control information to the same subframe as the subframe to which the first physical uplink control channel is allocated. Assigned to station equipment,
The mobile station device
Selecting any second physical uplink control channel from the plurality of second physical uplink control channels;
When the selected second physical uplink control channel is arranged in an uplink carrier element different from the uplink carrier element in which the first physical uplink control channel is arranged, the first control Transmitting both the information and the second control information to the base station apparatus;
When the selected second physical uplink control channel is arranged in the same uplink carrier element as the uplink carrier element in which the first physical uplink control channel is arranged, the second physical uplink control channel A mobile communication system, characterized by transmitting control information to the base station apparatus. The mobile station device
When a physical uplink shared channel is allocated by the base station apparatus, both the first control information and the second control information are transmitted to the base station apparatus using the physical uplink shared channel. The mobile communication system according to claim 1. A mobile communication system in which a base station apparatus and a mobile station apparatus communicate using a plurality of carrier elements,
The base station device
The mobile station apparatus transmits information indicating a specific one or a plurality of uplink carrier elements for transmitting uplink control information using a single physical uplink control channel to the mobile station apparatus. ,
The mobile station apparatus allocates a first physical uplink control channel for transmitting first control information to the mobile station apparatus;
The mobile station apparatus moves each of a plurality of second physical uplink control channels for transmitting second control information to the same subframe as the subframe to which the first physical uplink control channel is allocated. Assigned to station equipment,
The mobile station device
Selecting any second physical uplink control channel from the plurality of second physical uplink control channels;
When the selected second physical uplink control channel is arranged in an uplink carrier element different from the specific one or more uplink carrier elements, the first control information and the second Together with the control information of the base station device,
When the selected second physical uplink control channel is arranged in the same uplink carrier element as the one or more specific uplink carrier elements, the second control information is transmitted to the base A mobile communication system characterized by transmitting to a station device. The mobile station device
When a physical uplink shared channel is allocated by the base station apparatus, both the first control information and the second control information are transmitted to the base station apparatus using the physical uplink shared channel. The mobile communication system according to claim 3. The mobile station device
When a physical uplink shared channel in the specific one or a plurality of uplink carrier elements is allocated by the base station apparatus, both the first control information and the second control information are included in the physical The mobile communication system according to claim 3, wherein transmission is performed to the base station apparatus using an uplink shared channel. The mobile communication system according to any one of claims 1 to 5, wherein the first control information is channel state information indicating a downlink channel state. The mobile communication system according to any one of claims 1 to 5, wherein the first control information is a scheduling request for requesting allocation of resources for transmitting uplink data. 6. The mobile communication system according to claim 1, wherein the second control information is HARQ control information for a physical downlink control channel and / or a downlink transport block. A mobile station apparatus in a mobile communication system in which a base station apparatus and a mobile station apparatus communicate using a plurality of carrier elements,
Means for receiving from the base station apparatus a signal for assigning a first physical uplink control channel for transmitting first control information;
From the base station apparatus, a signal for assigning each of the plurality of second physical uplink control channels for transmitting the second control information to the same subframe as the subframe to which the first physical uplink control channel is assigned. Means for receiving;
Means for selecting any second physical uplink control channel from the plurality of second physical uplink control channels;
When the selected second physical uplink control channel is arranged in an uplink carrier element different from the uplink carrier element in which the first physical uplink control channel is arranged, the first control Means for transmitting both the information and the second control information to the base station apparatus;
When the selected second physical uplink control channel is arranged in the same uplink carrier element as the uplink carrier element in which the first physical uplink control channel is arranged, the second physical uplink control channel Means for transmitting control information to the base station apparatus. A mobile station apparatus comprising: The mobile station device
When a physical uplink shared channel is allocated by the base station apparatus, both the first control information and the second control information are transmitted to the base station apparatus using the physical uplink shared channel. The mobile station apparatus according to claim 9, wherein: A mobile station apparatus in a mobile communication system in which a base station apparatus and a mobile station apparatus communicate using a plurality of carrier elements,
Means for receiving, from the base station apparatus, information for setting one or more specific uplink carrier elements for transmitting uplink control information using a single physical uplink control channel;
Means for receiving from the base station apparatus a signal for assigning a first physical uplink control channel for transmitting first control information;
From the base station apparatus, a signal for assigning each of the plurality of second physical uplink control channels for transmitting the second control information to the same subframe as the subframe to which the first physical uplink control channel is assigned. Means for receiving;
Means for selecting any second physical uplink control channel from the plurality of second physical uplink control channels;
When the selected second physical uplink control channel is arranged in an uplink carrier element different from the specific one or more uplink carrier elements, the first control information and the second Means for transmitting both of the control information to the base station device;
When the selected second physical uplink control channel is arranged in the same uplink carrier element as the one or more specific uplink carrier elements, the second control information is transmitted to the base And a means for transmitting to the station device. The mobile station device
When a physical uplink shared channel is allocated by the base station apparatus, both the first control information and the second control information are transmitted to the base station apparatus using the physical uplink shared channel. The mobile station apparatus according to claim 11, wherein: The mobile station device
When a physical uplink shared channel in the specific one or a plurality of uplink carrier elements is allocated by the base station apparatus, both the first control information and the second control information are included in the physical It transmits to the said base station apparatus using an uplink shared channel. The mobile station apparatus of Claim 11 characterized by the above-mentioned. A mobile station apparatus communication method in a mobile communication system in which a base station apparatus and a mobile station apparatus communicate using a plurality of carrier elements,
Receiving a signal for assigning a first physical uplink control channel for transmitting first control information from the base station apparatus;
From the base station apparatus, a signal for assigning each of the plurality of second physical uplink control channels for transmitting the second control information to the same subframe as the subframe to which the first physical uplink control channel is assigned. Receive,
Selecting any second physical uplink control channel from the plurality of second physical uplink control channels;
When the selected second physical uplink control channel is arranged in an uplink carrier element different from the uplink carrier element in which the first physical uplink control channel is arranged, the first control Transmitting both the information and the second control information to the base station apparatus;
When the selected second physical uplink control channel is arranged in the same uplink carrier element as the uplink carrier element in which the first physical uplink control channel is arranged, the second physical uplink control channel Control information is transmitted to the base station apparatus. A mobile station apparatus communication method in a mobile communication system in which a base station apparatus and a mobile station apparatus communicate using a plurality of carrier elements,
Receiving from the base station device information for setting one or more specific uplink carrier elements for transmitting uplink control information using a single physical uplink control channel;
Receiving a signal for assigning a first physical uplink control channel for transmitting first control information from the base station apparatus;
From the base station apparatus, a signal for assigning each of the plurality of second physical uplink control channels for transmitting the second control information to the same subframe as the subframe to which the first physical uplink control channel is assigned. Receive,
Selecting any second physical uplink control channel from the plurality of second physical uplink control channels;
When the selected second physical uplink control channel is arranged in an uplink carrier element different from the specific one or more uplink carrier elements, the first control information and the second Together with the control information of the base station device,
When the selected second physical uplink control channel is arranged in the same uplink carrier element as the one or more specific uplink carrier elements, the second control information is transmitted to the base A communication method characterized by transmitting to a station device.