JP2010109488A - Mobile communication system, base station apparatus and mobile station apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily configure downlink carrier elements and uplink carrier elements from downlink system bands and uplink system bands, and to achieve efficient communication by utilizing the configured downlink carrier elements and uplink carrier elements. <P>SOLUTION: In a mobile communication system constituted of a base station apparatus and a mobile station apparatus, the downlink system bands are divided by a basic frequency to configure a plurality of downlink carrier elements, the uplink system bands are divided by the basic frequency to configure a plurality of uplink carrier elements. The base station apparatus and the mobile station apparatus perform communication by associating the downlink carrier elements with the uplink carrier elements. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a mobile communication system, a base station apparatus, and a mobile station apparatus that perform communication by associating an uplink carrier element or carrier element group with a downlink carrier element or carrier element group.

  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 system 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 have been underway. .

  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 scheme in LTE-A, the OFDMA scheme in the downlink, the SC-FDMA scheme in the single carrier communication scheme in the uplink, the OFDMA scheme in the multicarrier communication scheme, and the Clustered- It has been proposed to introduce an SC-FDMA (also referred to as “Clustered-Single Carrier-Frequency Division Multiple Access” or “DFT-s-OFDM with Spectrum Division Control”) method. Here, in LTE and LTE-A, the SC-FDMA scheme proposed as an uplink communication scheme keeps the PAPR (Peak to Average Power Ratio) when transmitting data low. It has the feature that it can.

In LTE-A, a frequency band used in a general mobile communication system is continuous, whereas a plurality of continuous / discontinuous frequency bands (hereinafter referred to as “Carrier Component” or “ (Referred to as “component carrier”) is used as a single system band (broadband system band) (frequency band aggregation: spectrum aggregation, carrier aggregation, frequency aggregation, etc.) .) Is proposed. In addition, in order for the base station apparatus and the mobile station apparatus to communicate using the system band more flexibly, the frequency band used for downlink communication and the frequency band used for uplink communication are different from each other. Has also been proposed (Non-Patent Document 1, Non-Patent Document 2).
"Proposals for LTE-Advanced Technologies", 3GPP TSG RAN WG1 Meeting # 53-bis, R1-082575, June 30-July 4, 2008. "Carrier aggregation in LTE-Advanced", 3GPP TSG RAN WG1 Meeting # 53-bis, R1-082468, June 30-July 4, 2008.

  However, in the conventional technology, a baseband apparatus and a mobile station apparatus use a plurality of continuous / discontinuous frequency bands (carrier elements) in combination to form a wideband system band (for example, a system band having a bandwidth of 100 MHz) ), The downlink carrier element and the uplink carrier element (for example, each having a bandwidth of 20 MHz) are configured from the downlink system band and the uplink system band. It was not clarified whether to communicate.

  That is, the base station apparatus and the mobile station apparatus specifically recognize the downlink carrier element and the uplink carrier element when communicating using a wide frequency band, and the downlink system It has not been understood how to configure a downlink carrier element and an uplink carrier element from a band and an uplink system band and to use them in combination as a broadband system band.

  For example, when a base station apparatus and a mobile station apparatus configure a downlink carrier element and an uplink carrier element from a downlink system bandwidth and an uplink system bandwidth each having a bandwidth of 100 MHz. If each carrier element is configured without considering the relationship between the downlink and the uplink, a complicated mobile communication system is configured which is very unbalanced.

  For example, a base station apparatus and a mobile station apparatus divide a downlink system band having a bandwidth of 100 MHz into 10 and configure 10 downlink carrier elements having a bandwidth of 10 MHz. If the uplink system band having a bandwidth of 100 MHz is divided into two to form two uplink carrier elements having a bandwidth of 50 MHz, the downlink carrier element and the uplink carrier When the elements are used in combination as a broadband system band, an unbalanced and complex mobile communication system is configured.

  In such a mobile communication system, for example, a base station apparatus uses 10 carrier elements of a downlink having a bandwidth of 10 MHz, and transmits 10 pieces of information in the same subframe (simultaneously) to the mobile station. The mobile station apparatus that has transmitted to the apparatus and received this signal uses the two carrier elements of the uplink having a bandwidth of 50 MHz to transmit two pieces of information in the same subframe (simultaneously) to the base station. It is possible to transmit to the device, but depending on the relationship between the number of information transmitted on the downlink (10) and the number of information transmitted on the uplink (2), and on each downlink carrier element The amount of information that can be transmitted (the amount of information that can be transmitted using a bandwidth of 10 MHz), the amount of information that can be transmitted by each uplink carrier element (the amount of information that can be transmitted using a bandwidth of 50 MHz), and Significantly different relationships, and transmission at transmission and uplink in the downlink are unbalanced, constitute complex mobile communication system.

  Further, for example, the base station apparatus and the mobile station apparatus divide the downlink system band having a bandwidth of 100 MHz into two to form two downlink carrier elements having a bandwidth of 50 MHz, Similarly, when the uplink system band having a bandwidth of 100 MHz is divided into 10 and 10 uplink carrier elements having a bandwidth of 100 MHz are configured, the downlink carrier element and the uplink carrier element are configured. There is also a problem in that control signals (control information) transmitted from the base station apparatus increase when the carrier elements are used in combination as a broadband system band.

  In such a mobile communication system, for example, when the base station apparatus transmits control information using two downlink carrier elements having a bandwidth of 50 MHz, two downlink carriers are transmitted. Corresponding to information (for example, downlink user data) transmitted by the element, the mobile station apparatus uses any carrier element in the uplink to transmit information (for example, HARQ ACK / NACK corresponding to downlink user data). It is necessary to instruct whether to transmit. That is, the base station apparatus controls the mobile station apparatus to indicate an uplink carrier element to which uplink information should be transmitted from among 10 uplink carrier elements having a bandwidth of 10 MHz. A signal (control information) must be transmitted. Thereby, the control signal (control information) transmitted from the base station apparatus to the mobile station apparatus using the downlink increases.

  That is, in the conventional technology, when the base station apparatus and the mobile station apparatus operate using a downlink carrier element and an uplink carrier element in combination to operate and communicate as a wideband system band, the downlink How to specifically recognize the carrier element and uplink carrier element and how to configure the downlink carrier element and uplink carrier element from the downlink system bandwidth and uplink system bandwidth Since it was not known what to do, there was a problem that the transmission in the downlink and the transmission in the uplink were unbalanced and a complicated mobile communication system was configured.

  Also, the uplink information (for example, HARQ ACK / NACK corresponding to the downlink user data) corresponding to the downlink information (for example, downlink user data) transmitted by the base station apparatus, the mobile station apparatus determines which uplink There has been a problem that a control signal (control information) for instructing whether to perform transmission using the carrier element of the link is increased, and a mobile communication system that cannot use radio resources efficiently is configured.

  The present invention has been made in view of such circumstances, and a base station apparatus and a mobile station apparatus use a downlink carrier element and an uplink carrier element in combination to form a wideband system band. When operating and communicating, the downlink carrier element and the uplink carrier element can be easily configured from the downlink system band and the uplink system band, and the configured downlink carrier element and the uplink carrier element are configured. An object of the present invention is to provide a mobile communication system, a base station apparatus, and a mobile station apparatus that realize efficient communication (transmission and reception of information) using a carrier element.

  (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 including a base station apparatus and a mobile station apparatus, and configures a plurality of downlink carrier elements by dividing a downlink system band by a fundamental frequency. The base station apparatus and the mobile station apparatus are configured to divide an uplink system band by a fundamental frequency to form a plurality of uplink carrier elements, and the base station apparatus and the mobile station apparatus include the downlink carrier element and the uplink carrier element, It is characterized by communicating with each other.

  (2) The mobile communication system of the present invention is a mobile communication system including a base station apparatus and a mobile station apparatus, and a plurality of downlink carriers obtained by dividing a downlink system band by a fundamental frequency. A plurality of uplink carrier elements by dividing an uplink system band by a fundamental frequency, and based on a ratio between the number of downlink carrier elements and the number of uplink carrier elements Forming a downlink carrier element group including a plurality of downlink carrier elements, wherein the base station apparatus and the mobile station apparatus mutually correspond to the downlink carrier element group and the uplink carrier element It is characterized by making it communicate.

  (3) The mobile communication system according to the present invention is a mobile communication system including a base station apparatus and a mobile station apparatus, and a plurality of downlink carriers obtained by dividing a downlink system band by a fundamental frequency. A plurality of uplink carrier elements by dividing an uplink system band by a fundamental frequency, and based on a ratio between the number of uplink carrier elements and the number of downlink carrier elements Forming an uplink carrier element group including a plurality of uplink carrier elements, and the base station apparatus and the mobile station apparatus mutually correspond to the downlink carrier element and the uplink carrier element group It is characterized by making it communicate.

  (4) Further, in the mobile communication system of the present invention, the base station apparatus sets the fundamental frequency in the mobile station apparatus in a cell-specific manner using a broadcast channel.

  (5) Further, in the mobile communication system of the present invention, the base station apparatus sets the fundamental frequency in the mobile station apparatus unique to the mobile station apparatus using a radio resource control signal.

  (6) In the mobile communication system of the present invention, the number of downlink carrier elements having a bandwidth corresponding to the fundamental frequency, and the number of uplink carrier elements having a bandwidth corresponding to the fundamental frequency, Are equal, and there is a downlink carrier element having a bandwidth less than the fundamental frequency in the downlink system band, and an uplink carrier element having a bandwidth less than the fundamental frequency in the uplink system band. When present, the base station apparatus and the mobile station apparatus mutually transmit a downlink carrier element having a bandwidth less than the fundamental frequency and an uplink carrier element having a bandwidth less than the fundamental frequency. It is characterized by corresponding communication.

  (7) In the mobile communication system of the present invention, the number of downlink carrier elements having a bandwidth corresponding to the fundamental frequency is greater than the number of uplink carrier elements having a bandwidth corresponding to the fundamental frequency. The base station apparatus and the mobile station apparatus, the base station apparatus and the mobile station apparatus, the base station apparatus and the mobile station apparatus, the base station apparatus and mobile station apparatus, It is characterized in that communication is performed in association with uplink carrier elements having a bandwidth less than.

  (8) In the mobile communication system of the present invention, the number of downlink carrier elements having a bandwidth corresponding to the fundamental frequency is greater than the number of uplink carrier elements having a bandwidth corresponding to the fundamental frequency. If a downlink carrier element having a bandwidth less than the fundamental frequency is present in the downlink system band, the downlink carrier element having a bandwidth less than the fundamental frequency is assigned to an adjacent downlink. And the base station apparatus and the mobile station apparatus associate the configured downlink carrier element group and the uplink carrier element with each other. This is characterized by communication.

  (9) In the mobile communication system of the present invention, the number of downlink carrier elements having a bandwidth corresponding to the fundamental frequency is greater than the number of uplink carrier elements having a bandwidth corresponding to the fundamental frequency. If the downlink system element includes a downlink carrier element having a bandwidth less than the fundamental frequency, the downlink carrier element less than the fundamental frequency is replaced by an adjacent downlink carrier element. The base station apparatus and the mobile station apparatus are connected to a downlink carrier element group included to form a downlink carrier element group, and the base station apparatus and the mobile station apparatus include the configured downlink carrier element group and the uplink carrier element, It is characterized by communicating with each other.

  (10) In the mobile communication system of the present invention, the number of uplink carrier elements having a bandwidth corresponding to the fundamental frequency is greater than the number of downlink carrier elements having a bandwidth corresponding to the fundamental frequency. And when the downlink system band includes a downlink carrier element having a bandwidth that is less than the fundamental frequency, the base station apparatus and the mobile station apparatus may use the uplink carrier element and the fundamental frequency. It is characterized in that communication is carried out by mutually associating with downlink carrier elements having a bandwidth less than.

  (11) In the mobile communication system of the present invention, the number of uplink carrier elements having a bandwidth corresponding to the fundamental frequency is greater than the number of downlink carrier elements having a bandwidth corresponding to the fundamental frequency. If an uplink carrier element having a bandwidth less than the fundamental frequency is included in the uplink system band, an uplink carrier element having a bandwidth less than the fundamental frequency And the base station apparatus and the mobile station apparatus associate the configured uplink carrier element group and the downlink carrier element with each other in association with each other. It is characterized by communication.

  (12) In the mobile communication system of the present invention, the number of uplink carrier elements having a bandwidth corresponding to the fundamental frequency is greater than the number of downlink carrier elements having a bandwidth corresponding to the fundamental frequency. If an uplink carrier element having a bandwidth less than the fundamental frequency is included in the uplink system band, an uplink carrier element having a bandwidth less than the fundamental frequency An uplink carrier element group connected to an uplink carrier element group including the carrier element, and the base station apparatus and the mobile station apparatus are configured to transmit the downlink carrier element and the configured uplink It is characterized in that communication is performed in association with carrier element groups.

  (13) Further, in the mobile communication system of the present invention, uplink information that can be transmitted by an uplink carrier element included in the uplink carrier element group is limited.

  (14) Further, in the mobile communication system of the present invention, it is characterized in that mobile station apparatuses that can use an uplink channel arranged in an uplink carrier element included in the uplink carrier element group are limited. .

  (15) A base station apparatus according to the present invention is a base station apparatus applied to a mobile communication system, and includes a downlink carrier element and an uplink carrier element from a downlink system band and an uplink system band. Transmitting a fundamental frequency for configuring a mobile station apparatus, dividing a downlink system band by the fundamental frequency to form a plurality of downlink carrier elements, and dividing an uplink system band by the fundamental frequency Thus, a plurality of uplink carrier elements are configured, and the downlink carrier elements and the uplink carrier elements are made to correspond to each other to communicate with a mobile station apparatus.

  (16) A mobile station apparatus according to the present invention is a mobile station apparatus applied to a mobile communication system, and includes a downlink carrier element and an uplink carrier element from a downlink system band and an uplink system band. Is received from a base station apparatus, a downlink system band is divided by the basic frequency to form a plurality of downlink carrier elements, and an uplink system band is divided by the basic frequency. Thus, a plurality of uplink carrier elements are configured, and the downlink carrier element and the uplink carrier element are associated with each other to communicate with the base station apparatus.

  According to the present invention, when a base station apparatus and a mobile station apparatus use a downlink carrier element and an uplink carrier element in combination to operate and communicate as a wideband system band, the downlink station element and the mobile station apparatus perform downlink communication. Easily configure downlink carrier elements and uplink carrier elements from the system band and uplink system band, and use the configured downlink carrier elements and uplink carrier elements to efficiently communicate (Information transmission / reception) can be realized.

  Next, embodiments according to the present invention will be described with reference to the drawings. FIG. 1 is a diagram conceptually illustrating a configuration example of a physical channel in the 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 These channels are transmitted and received between the base station apparatus and the mobile station apparatus.

  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. Also, a subframe including a physical broadcast channel (PBCH) can be decoded only by the subframe (self-decodable).

  The physical downlink control channel (PDCCH) includes downlink shared channel (PDSCH) resource allocation, hybrid automatic repeat request (HARQ) information for downlink data, and physical uplink shared channel (PUSCH). It is a channel used to notify the mobile station apparatus of uplink transmission permission that is resource allocation.

  When the PDCCH includes a downlink shared channel resource allocation, the mobile station apparatus uses the physical downlink shared channel (PDSCH) to transmit data (downlink) according to the resource allocation indicated by the PDCCH from the base station apparatus. Link data and / or downlink control data). That is, this PDCCH is a signal for performing resource allocation for the downlink (hereinafter referred to as “downlink transmission permission signal”, also referred to as “downlink grant”).

  Also, when the PDCCH includes an uplink shared channel resource allocation, the mobile station device uses the physical uplink shared channel (PUSCH) according to the resource allocation indicated by the PDCCH from the base station device. (Uplink data and / or uplink control data) is transmitted. That is, the PDCCH is a signal that permits data transmission on the uplink (hereinafter referred to as “uplink transmission permission signal”, also referred to as “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)). When the base station apparatus schedules the mobile station apparatus, control data described below is also transmitted using PUSCH. Control data includes channel state information, for example, downlink channel quality identifier CQI (Channel Quality Indicator), precoding matrix identifier PMI (Precoding Matrix Indicator), rank identifier RI (Rank Indicator), and HARQ acknowledgment for downlink transmission. (ACK: Positive Acknowledgement) and negative acknowledgment (NACK: Negative Acknowledgement) are included.

  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. May be included), MAC (Medium Access Control) control elements, and the like.

  The physical uplink control channel (PUCCH) is a channel used for transmitting control data. Here, the control data is, for example, channel state information (CQI, PMI, RI) transmitted (feedback) from the mobile station apparatus to the base station apparatus, and resource allocation for the mobile station apparatus to transmit uplink data. Scheduling request (SR: Scheduling Request) for requesting transmission (UL-SCH), HARQ ACK / NACK for downlink transmission, and the like.

  HARQ ACK / NACK for downlink transmission is transmitted using PUSCH that is associated differently according to the scheduling method. For example, ACK / NACK for a dynamically scheduled PDSCH is transmitted on a PUCCH dynamically associated with a PDCCH used for PDSCH scheduling. On the other hand, ACK / NACK for a PDSCH scheduled semi-persistent (semi-persistent) is transmitted on a preset PUCCH.

  Channel state information (CQI, PMI, RI) transmitted (feedback) from the mobile station apparatus to the base station apparatus will be described. The base station apparatus determines radio transmission parameters (hereinafter referred to as AMC (Adaptive Modulation and Coding) such as an error correction method, an error correction coding rate, and a data modulation multi-level number) according to the channel quality (reception quality) of each mobile station apparatus. By switching the mode), more efficient communication can be realized. CQI (Channel Quality Indicator: also called channel quality information) is information indicating channel quality (reception quality) fed back from each mobile station apparatus in order to switch AMC. The channel quality (reception quality) indicating the quality of the signal received from the apparatus is fed back to the base station apparatus as CQI.

  Also, transmission diversity such as SDM (Space Division Multiplexing), SFBC (Space-Frequency Block Coding), and CDD (Cycle Delay Diversity) using MIMO (Multiple Input Multiple Output) is performed between the base station apparatus and the mobile station apparatus. By using, it is possible to increase the communication path capacity. MIMO is a general term for a multi-input / multi-output system or technology, and is characterized in that a plurality of antennas are used on the transmitting side and the receiving side, and the number of branches of input / output of radio waves is made plural. A unit of a signal sequence that can be spatially multiplexed using the MIMO scheme is called a stream, and the number of streams requested by the mobile station apparatus during MIMO communication is transmitted as RI (Rank Indicator) from the mobile station apparatus to the base station apparatus. (Feedback).

  Also, when using SDM in the downlink, in order to correctly separate information of a plurality of streams transmitted from each antenna, a transmission signal sequence is pre-processed (this is referred to as “precoding, precoding”). ). The precoding information can be calculated based on the channel state estimated by the mobile station apparatus, and is transmitted (feedback) as PMI (Precoding Matrix Indicator) from the mobile station apparatus to the base station apparatus.

  Thus, in order to implement | achieve communication with optimal quality, each mobile station apparatus transmits channel state information (CQI, PMI, RI) to a base station apparatus using PUCCH (feedback). For example, the mobile station apparatus can periodically transmit (feedback) channel state information to the base station apparatus using PUCCH. Further, as described above, when the base station apparatus performs scheduling, the mobile station apparatus transmits channel state information to the base station apparatus using PUSCH. For example, the mobile station apparatus can transmit (feedback) channel state information aperiodically using PUSCH by scheduling of the base station apparatus.

  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.

  The communication system according to the present embodiment includes a base station device 100 and a mobile station device 200. Base station apparatus 100 and mobile station apparatus 200 can perform some part of processing for each carrier element and perform some part of processing in common for the carrier elements in the configuration described below.

[Base station equipment]
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. Here, 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. Further, 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. Based on the transport channel and the scheduling information input from the scheduling unit 104, the data control unit 101 maps signals and channels generated in the physical layer to the physical channel. 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 is configured with scheduling information (downlink physical resource block PRB (Physical Resource Block) allocation information (for example, frequency and time) from the scheduling unit 104 for the data input from the data control unit 101. Data modulation based on the physical resource block location information)) and the modulation scheme and coding scheme (for example, modulation scheme: 16QAM, coding rate: 2/3 coding rate) corresponding to each PRB, Performs signal processing such as encoding, serial / parallel conversion of input signals, IFFT (Inverse Fast Fourier Transform) processing, CP (Cyclic Prefix) insertion, and filtering to generate transmission data and wirelessly Output to the unit 103.

  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 receives feedback information (uplink channel state information (CQI, PMI, RI), ACK / NACK information for downlink data, etc.) received from the mobile station apparatus 200, each mobile station Downlink transport format (transmission form) for modulating each data based on information of PRB usable by the apparatus, buffer status, scheduling information input from higher layer 108, etc. (assignment of physical resource block and (Modulation scheme and coding scheme, etc.) selection processing, retransmission control in HARQ, and generation of 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, and the like, an uplink transport format (transmission form) for modulating each data (physical resource block allocation and modulation scheme and code) Scheduling information used for uplink scheduling and generation of scheduling information. Scheduling information used for uplink scheduling is output to the data control unit 101.

  Also, 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.

  The reception data demodulation unit 106 also serves as an OFDM demodulation unit and / or a DFT-Spread-OFDM (DFT-S-OFDM) demodulation unit that demodulates reception data modulated by the OFDM method and / or the SC-FDMA method. 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 (CQI, PMI, RI) notified from the mobile station apparatus 200, ACK / NACK information, a scheduling request, and the like.

  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 (sometimes simply referred to as “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.

[Mobile station equipment]
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. Here, the data control unit 201, the transmission data modulation unit 202, the radio unit 203, the scheduling unit 204, the upper layer 208, and the antenna 209 constitute a transmission unit. The radio unit 203, the scheduling unit 204, the channel estimation unit 205, the reception data demodulation unit 206, the data extraction unit 207, the upper layer 208, and the 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. Signals and channels generated in the physical layer based on the transport channel and scheduling information input from the scheduling unit 204 are mapped to physical channels 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 converts the received data into 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 204 performs mapping between logical channels and transport channels, downlink and uplink scheduling (HARQ processing, transport format selection, etc.), and the like. Since the scheduling unit 204 controls the processing units of each physical layer in an integrated manner, 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 extraction unit 207, and the wireless There is an interface with the 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. The scheduling unit 204 also outputs the downlink channel state information (CQI, PMI, RI) input from the channel estimation unit 205 and the CRC confirmation result input from the data extraction unit 207 to the data control unit 201. To do. 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 converted into downlink channel state information (CQI, PMI, RI, etc.) and output to scheduling section 204.

  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 CRC on the data input from the reception data demodulation unit 206 to confirm the correctness 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 mobile communication system according to the first embodiment, the base station device and the mobile station device use a downlink system band as a base frequency (BF) (also referred to as a base frequency bandwidth (BFB)). To form a plurality of downlink carrier elements, and to divide an uplink system band by a fundamental frequency (also referred to as a fundamental frequency bandwidth) to form a plurality of uplink carrier elements. The downlink carrier element and the uplink carrier element can correspond to each other to perform communication.

  Hereinafter, in this embodiment, the frequency band is defined by a bandwidth (Hz), but may be defined by the number of resource blocks (RB (RBs)) configured by frequency and time. The carrier element (also referred to as CC: Carrier Component, Component Carrier) in this embodiment is used when a base station apparatus and a mobile station apparatus communicate in a mobile communication system having a (broadband) system band. A (narrow band) frequency band is shown. The base station apparatus and the mobile station apparatus aggregate a plurality of carrier elements (for example, five frequency bands having a bandwidth of 20 MHz) (also called frequency aggregation: spectrum aggregation, carrier aggregation, frequency aggregation, etc.). Thus, a (broadband) system band (for example, a system band having a bandwidth of 100 MHz) can be configured, and high-speed data communication (information transmission / reception) can be realized.

  Each carrier element is a (narrowband) frequency band (for example, a frequency band having a bandwidth of 20 MHz) constituting this (broadband) system band (for example, a system band having a bandwidth of 100 MHz). It is shown that. That is, the downlink carrier element has a part of bandwidth in the downlink system band, and the uplink carrier element has a part of bandwidth in the uplink system band. Yes. 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 itself constituting the wide system band may be further constituted by a plurality of carrier elements. Hereinafter, in the present embodiment, a carrier element constituted by a plurality of carrier elements (groups) is referred to as a carrier element group (also referred to as CCG: Carrier Component Group, Component Carrier Group). For example, in this embodiment, a broadband system band (for example, a system band having a bandwidth of 100 MHz) is divided into two carrier element groups (for example, a carrier element group having a bandwidth of 40 MHz and a bandwidth of 60 MHz). Each of the two carrier element groups can be further constituted by a plurality of carrier elements. For example, a carrier element group having a bandwidth of 40 MHz is configured by aggregating two carrier elements having a bandwidth of 20 MHz, and a carrier element group having a bandwidth of 60 MHz is formed with a bandwidth of 20 MHz. It can be configured by aggregating the three carrier elements that it has.

  The carrier element and / or the carrier element group may be arranged in a continuous frequency band or a discontinuous frequency band, and a plurality of carriers that are continuous and / or discontinuous frequency bands. By aggregating elements and / or carrier element groups, a broadband system band can be constructed. Further, the downlink system band and the uplink system band configured by carrier elements and / or carrier element groups need not have the same bandwidth. Even if the downlink system band and the uplink system band have different bandwidths, the base station apparatus and the mobile station apparatus can perform communication using these system bands.

  FIG. 4 shows a downlink frequency band and an uplink frequency band for explaining the first embodiment. Hereinafter, in the mobile communication system according to the first embodiment, a downlink system band (or a downlink system bandwidth may be used), that is, a frequency band (frequency bandwidth) in which downlink carrier elements in the system are aggregated. , DL system band (DSB: Downlink System Band, also called Downlink System Bandwidth), and aggregates the uplink system band (or downlink system bandwidth), that is, the uplink carrier elements in the system This frequency band (frequency bandwidth) is referred to as a UL system band (also called USB: Uplink System Band, Uplink System Bandwidth).

  In the mobile communication system according to the first embodiment, the base station apparatus and the mobile station apparatus use a DL system band and a UL system band having a wide bandwidth (for example, each having a bandwidth of 100 MHz) as fundamental frequencies (BF). : Base Frequency), and the obtained frequency bands (for example, each having a bandwidth of 20 MHz) are divided into downlink carrier elements (also referred to as DCC: Downlink Carrier Component and Downlink Component Carrier) and uplink carriers. Element (UCC: Uplink Carrier Component, also called Uplink Component Carrier).

  Here, for this basic frequency (also referred to as a basic frequency bandwidth (BFB)), different values (different frequency bandwidths) may be set or defined for the uplink and the downlink. . The base station apparatus and the mobile station apparatus divide the DL system band by the fundamental frequency (BF) and divide the UL system band by the fundamental frequency (BF). A plurality of uplink carrier elements obtained can be associated with each other to perform communication. For example, a downlink carrier element and an uplink carrier element are associated with each other in the direction in which the frequency increases. Communication can be performed. That is, the base station apparatus and the mobile station apparatus use the downlink carrier element and the uplink carrier element obtained by the fundamental frequency (BF) from the DL system band and the UL system band in combination (frequency band). It is possible to operate as a wide band system band (by aggregation) and perform high-speed communication (information transmission / reception).

  Here, the basic frequency (BF) is a basic frequency for the base station apparatus and the mobile station apparatus to obtain (determine) a downlink carrier element and an uplink carrier element from the DL system band and the UL system band. This is the frequency (frequency band) to be (base). The base station apparatus and the mobile station apparatus obtain (determine and calculate) the configuration of the downlink carrier element and the uplink carrier element by dividing the DL system band and the UL system band by the basic frequency (BF). be able to. At this time, when the base station apparatus and the mobile station apparatus cannot divide the DL system band and / or UL system band by the basic frequency (BF) (the DL system band and / or the UL system band is changed to the basic frequency (BF ), When the remainder is generated, the operation in the case where the downlink carrier element and / or the uplink carrier element has a frequency bandwidth less than the fundamental frequency will be described later.

  In the mobile communication system shown in FIG. 4, the base station apparatus and the mobile station apparatus divide the DL system band by the basic frequency (BF), so that five downlink carrier elements (DCC-0, DCC-1, DCC). -2, DCC-3, DCC-4) are conceptually shown. In addition, the base station apparatus and the mobile station apparatus divide the UL system band by the basic frequency (BF), so that five uplink carrier elements (UCC-0, UCC-1, UCC-2, UCC-3, The state which comprises UCC-4) is shown notionally. Here, the downlink five carrier elements and the uplink five carrier elements are DCC-0, DCC-1, DCC-2, DCC-3, DCC-4, and UCC-0 in the direction of increasing frequency, respectively. , UCC-1, UCC-2, UCC-3, and UCC-4 (hereinafter, the frequency of the figure to be described increases from left to right).

  In addition, arrows extending from the downlink carrier element and the uplink carrier element in FIG. 4 indicate that the base station apparatus and the mobile station apparatus have downlink carrier elements (DCC-0, DCC-1, DCC- 2, DCC-3, DCC-4) and uplink carrier elements (UCC-0, UCC-1, UCC-2, UCC-3, UCC-4) are communicated with each other. Is shown. That is, in FIG. 4, the base station apparatus and the mobile station apparatus communicate with each other by making the downlink carrier element and the uplink carrier element correspond to the direction in which the frequency increases (the direction in which the index increases).

  Here, the mobile communication system shown in FIG. 4 includes the number of downlink carrier elements (DCCN: Downlink Carrier Component Number, also referred to as Downlink Component Carrier Number) and the number of uplink carrier elements (UCCN: Uplink Carrier Component Number). , Also referred to as Uplink Component Carrier Number) can be said to be mobile communication systems having the same (equal) number.

  In the mobile communication system shown in FIG. 4, the base station apparatus and the mobile station apparatus include downlink carrier elements (DCC-0, DCC-1, DCC-2, DCC-3, DCC-4) and uplink carrier elements. (UCC-0, UCC-1, UCC-2, UCC-3, UCC-4) communicate with each other. That is, the base station apparatus transmits downlink information to the mobile station apparatus using DCC-0 (which can be said to be arranged in DCC-0), and the mobile station apparatus performs UCC-corresponding to DCC-0. The uplink information is transmitted to the base station apparatus using 0 (which can be said to be arranged in UCC-0).

  For example, the base station apparatus uses DCC-0 to transmit downlink data (for example, downlink user data or downlink transport block) to the mobile station apparatus, and the mobile station apparatus transmits DCC-0. Can be transmitted to the base station apparatus using the UCC-0 corresponding to the HARQ ACK / NACK for the downlink data. Similarly, the base station apparatus transmits downlink data (also referred to as downlink user data or downlink transport block) using DCC-1, DCC-2, DCC-3, and DCC-4, and moves. The station apparatus transmits HARQ ACK / NACK for the downlink data to the base station apparatus using UCC-1, UCC-2, UCC-3, and UCC-4 corresponding to each downlink carrier element.

  That is, in the mobile communication system in FIG. 4, the base station apparatus uses DCC-0, DCC-1, DCC-2, DCC-3, and DCC-4 in the same subframe (simultaneously). The mobile station apparatus transmits uplink data to uplink carrier elements UCC-0, UCC-1, UCC-2, UCC-3 corresponding to downlink carrier elements in the same subframe (simultaneously). , UCC-4 can be used to transmit HARQ ACK / NACK for downlink data to the base station apparatus.

  Here, the base station apparatus transmits information indicating the DL system band and / or UL system band and / or fundamental frequency (BF) to the mobile station apparatus in the cell managed by the base station apparatus, and a broadcast channel (BCH). It is possible to transmit (inform) uniformly by using. The base station device transmits (broadcasts) these pieces of information using a broadcast channel, whereby information indicating the DL system band and / or the UL system band and / or the basic frequency (BF) is transmitted to the mobile station device. On the other hand, it is possible to set cell-specific settings, and it is possible to configure downlink carrier elements and uplink carrier elements by efficiently using radio resources. Further, the base station apparatus sets information indicating the DL system band and / or UL system band and / or the fundamental frequency (BF) to the mobile station apparatus using a radio resource control signal (RRC signaling). be able to. Information indicating the DL system band and / or the UL system band and / or the fundamental frequency (BF) by the base station apparatus transmitting (setting) these pieces of information using a radio resource control signal (RRC signaling). Can be set for each mobile station apparatus, and the downlink carrier element and the uplink carrier element can be configured more flexibly for each mobile station apparatus.

  In addition, the base frequency (BF), which is a base for the base station apparatus and the mobile station apparatus to obtain the downlink carrier element and the uplink carrier from the DL system band and the UL system band, is defined in advance by specifications or the like. May be. By predefining the basic frequency (BF) according to specifications or the like, downlink carrier elements and / or uplink carrier elements can be easily obtained (determined), and radio resources are efficiently used. be able to.

  Further, when the base station apparatus and the mobile station apparatus configure the downlink carrier element and / or the uplink carrier element from the DL system band and / or UL system band from discontinuous frequency bands, the base station apparatus Does not connect (combine) with other (continuous / discontinuous) frequency bands, and sends information indicating the frequency band that is an independent carrier element to the mobile station apparatus by means of a broadcast channel (BCH) or a radio resource. You may transmit (set) using a control signal (RRC signal rinse). The base station device transmits (sets) information indicating a frequency band configured as an independent carrier element to the mobile station device without being connected (coupled) to other frequency bands, thereby causing discontinuity. When concentrating various frequency bands and operating as a wide-band system band, carrier elements are configured without connecting (coupling) frequency bands with significantly different carrier frequencies, and communication is performed using them in combination be able to.

  FIG. 5 is a diagram illustrating an example of a mobile communication system to which the first embodiment can be applied. In FIG. 5, the DL system band and the UL system band each indicate a frequency band having a bandwidth of 100 MHz, and the frequency band having a bandwidth of 20 MHz is shown as a basic frequency (BF). The mobile communication system shown in FIG. 5 is a mobile communication system in which the DL system bandwidth and the UL system bandwidth are the same (equal).

  In the mobile communication system shown in FIG. 5, the base station apparatus and the mobile station apparatus divide a DL system band having a bandwidth of 100 MHz by a basic frequency (BF) having a bandwidth of 20 MHz, and Carrier elements DCC-0, DCC-1, DCC-2, DCC-3, DCC-4 are configured. In addition, the base station apparatus and the mobile station apparatus divide the UL system band having a bandwidth of 100 MHz by a basic frequency (BF) having a bandwidth of 20 MHz, and generate five uplink carrier elements UCC-0 and UCC. -1, UCC-2, UCC-3, and UCC-4. That is, the system shown in FIG. 5 is a mobile communication system in which the number of downlink carrier elements and the number of uplink carrier elements are the same (equal).

  A base station apparatus and a mobile station apparatus that divide a DL system band and a UL system band by a basic frequency (BF) and configure a downlink carrier element and an uplink carrier element are provided with a downlink carrier element and an uplink carrier. It is possible to communicate by making elements correspond to each other. For example, the base station apparatus and the mobile station apparatus index the downlink carrier element and the uplink carrier element in the direction in which the frequency increases, and in the direction in which the frequency increases (in the direction in which the index increases), Communication can be performed correspondingly.

  That is, the base station apparatus uses (DCC-0, DCC-1, DCC-2) downlink carrier elements (DCC-0, DCC-1, DCC-2, DCC-3, DCC-4), respectively. , DCC-3, and DCC-4) are transmitted to the mobile station apparatus, and the mobile station apparatus transmits an uplink carrier element (UCC-) corresponding to each downlink carrier element. 0, UCC-1, UCC-2, UCC-3, UCC-4) (UCC-0, UCC-1, UCC-2, UCC-3, UCC-4). ) Transmit uplink information to the base station apparatus. In FIG. 5, the base station apparatus and the mobile station apparatus divide the downlink carrier element and the uplink carrier element into directions in which the frequency increases (direction in which the index increases), that is, DCC-0, UCC-0, and DCC. -1 and UCC-1, DCC-2 and UCC-2, DCC-3 and UCC-3, and DCC-4 and UCC-4 corresponding to each other.

  For example, the base station apparatus uses a physical downlink shared channel (hereinafter referred to as PDSCH) of DCC-0 (which can be said to be arranged in DCC-0), and uses downlink data (for example, downlink user data, downlink downlink). The mobile station apparatus uses a physical uplink control channel (hereinafter referred to as PUCCH) of UCC-0 corresponding to DCC-0 (also referred to as UCC-0). Then, HARQ ACK / NACK for downlink data is transmitted. Similarly, the base station apparatus uses each PDSCH of DCC-1, DCC-2, DCC-3, and DCC-4 (located in each of DCC-1, DCC-2, DCC-3, and DCC-4). The mobile station apparatus transmits UL data corresponding to each downlink carrier element, and transmits downlink data (which can also be said to be downlink user data, downlink transport block, for example). , UL-2, UL-3, UL-4 using each PUCCH (it can also be said that using PUCCH arranged in each of UCC-1, UCC-2, UCC-3, UCC-4) HARQ ACK / NACK for link data is transmitted.

  This is because, in the mobile communication system in FIG. 5, the base station apparatus uses the same subframe (simultaneously) and downlink carrier elements (DCC-0, DCC-1, DCC-2, DCC-3, DCC-4). Each PDSCH is used to transmit downlink data (for example, downlink user data, downlink transport block) to the mobile station apparatus, and the mobile station apparatus transmits the downlink in the same subframe (simultaneously). ACK / NACK of HARQ for downlink data using PUCCH of each uplink carrier element (UCC-0, UCC-1, UCC-2, UCC-3, UCC-4) corresponding to each carrier element Can be transmitted to the base station apparatus.

  Also, the base station apparatus uses the physical downlink control channel (PDCCH) of each downlink carrier element (DCC-0, DCC-1, DCC-2, DCC-3, DCC-4) to perform PDSCH. An uplink transmission permission signal (uplink grant) including resource allocation and physical uplink shared channel (PUSCH) resource allocation information is transmitted to the mobile station apparatus, and the mobile station apparatus transmits an uplink transmission permission signal (uplink). According to the resource allocation information included in the grant), uplink data (eg, uplink user data, uplink control data, uplink transport block) is converted into uplink carrier elements (UCC-0, UCC-1, UCC). -2, UCC-3, UCC-4) Using each PUSCH To send to the Chikyoku apparatus. Also, the base station apparatus transmits HARQ ACK / NACK for uplink data to downlink carrier elements (DCC-0, DCC-1, DCC-2, DCC-3, DCC-) corresponding to uplink carrier elements. 4) Use each PHICH to transmit to the mobile station apparatus.

  As described above, in the first embodiment, the base station apparatus and the mobile station apparatus use a downlink carrier element and an uplink carrier element in combination to operate as a wideband system band. When performing communication, the downlink system band is divided by the basic frequency (BF) to form a plurality of downlink carrier elements, and the uplink system band is divided by the basic frequency (BF), By configuring a plurality of uplink carrier elements and communicating with the configured downlink carrier elements and uplink carrier elements in correspondence with each other, from the downlink system band and the uplink system band, Easily configure downlink carrier elements and uplink carrier elements, and configure downlink carrier elements and uplink carrier elements Utilizing Yaria element, it is possible to realize an efficient communication (transmission and reception of information).

  Further, the base station apparatus transmits uplink information (for example, HARQ for information transmitted on the downlink) corresponding to information transmitted on the downlink (for example, downlink user data or downlink transport block). It is no longer necessary to transmit a control signal (control information) instructing which carrier element of the uplink is used to transmit (ACK / NACK), and communication (transmission and reception of information) using radio resources efficiently is eliminated. Can be done.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. As in the first embodiment, the second embodiment of the present invention uses a downlink carrier element and an uplink carrier element in combination to operate and communicate as a wideband system band. The present invention can be applied to a system, a base station apparatus, and a mobile station apparatus. Hereinafter, the same parts as those described in the first embodiment are omitted.

  The base station apparatus and mobile station apparatus in the second embodiment divide a downlink system band (DL system band) by a basic frequency (BF) (also referred to as a basic frequency bandwidth (BFB)), and Obtained by configuring downlink carrier elements, dividing the uplink system band (UL system band) by the fundamental frequency (BF), configuring multiple uplink carrier elements, and dividing the DL system band From the ratio of the number of downlink carrier elements obtained and the number of uplink carrier elements obtained by dividing the UL system band, a downlink carrier element group including a plurality of downlink carrier elements is obtained. The downlink carrier element group and the uplink carrier element can be configured to communicate with each other. That.

  In addition, the base station device and the mobile station device divide the DL system band by the basic frequency (BF), configure a plurality of downlink carrier elements, divide the UL system band by the basic frequency (BF), The number of uplink carrier elements obtained by configuring a plurality of uplink carrier elements and dividing the UL system band, and the number of downlink carrier elements obtained by dividing the DL system band From this ratio, an uplink carrier element group including a plurality of uplink carrier elements can be configured, and communication can be performed by associating the configured downlink carrier element and uplink carrier element group with each other. .

  FIG. 6 is a diagram illustrating an example of a mobile communication system to which the second embodiment can be applied. In the mobile communication system shown in FIG. 6, the DL system band indicates a frequency band having a bandwidth of 100 MHz, the UL system band indicates a frequency band having a bandwidth of 40 MHz, and the basic frequency (BF) is A frequency band with a bandwidth of 20 MHz is shown. The mobile communication system shown in FIG. 6 is a mobile communication system in which the DL system bandwidth is larger than the UL system bandwidth (having a wide bandwidth).

  In FIG. 6, the base station apparatus and the mobile station apparatus divide a DL system band having a bandwidth of 100 MHz by a basic frequency (BF) having a bandwidth of 20 MHz, and a downlink carrier element (DCC-0, DCC-1, DCC-2, DCC-3, DCC-4). The five downlink carrier elements are respectively indexed as DCC-0, DCC-1, DCC-2, DCC-3, and DCC-4 in the direction of increasing frequency (hereinafter, the figures to be described are , The frequency is increasing from left to right). Also, the base station apparatus and the mobile station apparatus divide the UL system band having a bandwidth of 40 MHz by the basic frequency (BF) having a bandwidth of 20 MHz, and then generate uplink carrier elements (UCC-0, UCC- 1) is configured.

  The two uplink carrier elements are respectively indexed as UCC-0 and UCC-1 in the direction of increasing frequency. Here, the mobile communication system shown in FIG. 6 has five downlink carrier elements (DCCN), two uplink carrier elements (UCCN), and two downlink carrier elements. Is greater than the number of uplink carrier elements.

  In FIG. 6, by dividing the DL system band and the UL system band by the basic frequency (BF), the number of downlink carrier elements and the number of uplink carrier elements are obtained (calculated) and the base station apparatus and the movement The station apparatus determines the number of carrier elements included in one downlink carrier element group (DCCNinDCCG: Downlink Carrier Component Number, Downlink Component Carrier Number in Downlink Component Carrier Group) from the ratio. calculate. That is, the base station apparatus and the mobile station apparatus determine the number of carrier elements included in one downlink carrier element group from the number of downlink carrier elements “5” and the number of uplink carrier elements “2” ( DCCNinDCCG) “2 (5/2 = 2.5, rounded down)” and one downlink carrier element group is configured by “two” carrier elements (“two” carrier elements) To form one carrier element group).

  When the number of downlink carrier elements is greater than the number of uplink carrier elements, the base station apparatus and the mobile station apparatus can determine that “the number of downlink carrier elements (DCCN) / the number of uplink carrier elements (UCCN). ) ", The number of carrier elements (DCCNinDCCG) included in one downlink carrier element group is calculated.

  As described above, the carrier element in the present embodiment can be further configured by a plurality of carrier elements, and the carrier element (including a plurality of carrier elements) configured by a plurality of carrier elements (groups) is the carrier element. It is called a group (CCG: Carrier Component Group, Component Carrier Group).

  The base station apparatus and the mobile station apparatus, in which the number of carrier elements included in one downlink carrier element group is calculated from the number of downlink carrier elements and the number of uplink carrier elements, are higher from the lowest frequency In order (in the direction of increasing frequency, in the direction of increasing index), downlink carrier elements are connected (combined) to form a downlink carrier element group and correspond to uplink carrier elements I will let you.

  In FIG. 6, the number of downlink carrier elements included in one downlink carrier element group is “2”. Therefore, the base station apparatus and the mobile station apparatus use downlink carrier elements (DCC-0, DCC). -1, DCC-2, DCC-3, DCC-4) are connected (coupled) two by two in order from the lowest frequency to the highest (in the direction of increasing frequency and in the direction of increasing index). Then, a downlink carrier element group (DCCG-0, DCCG-1) is configured and associated with an uplink carrier element (UCC-0, UCC-1).

  That is, a downlink carrier element group DCCG-0 is configured from the downlink carrier elements DCC-0 and DCC-1 (DCCG-1 including DCC-0 and DCC-1 is configured), and the uplink carrier element group DCCG-0 is configured. Corresponding to carrier element UCC-0, downlink carrier element group DCCG-1 is composed of downlink carrier elements DCC-2 and DCC-3 (DCCG-1 including DCC-2 and DCC-3 is included). Configured) and correspond to the uplink carrier element UCC-1.

  Here, the downlink carrier elements remaining after dividing the downlink system band by the basic frequency (BF) are assigned downlink carrier elements adjacent to the lower frequency side (the previous index is assigned). Downlink carrier element) or carrier element group including a downlink carrier element adjacent to the lower frequency side (a carrier element including a downlink carrier element to which the previous index is assigned) Group) and combined as one carrier element group.

  That is, in FIG. 6, the downlink carrier element DCC-4 remaining after dividing the downlink system band by the basic frequency (BF) is adjacent to the lower frequency side of the downlink carrier element DCC-3. Carrier element group (carrier element group including downlink carrier element DCC-3 to which the previous index is assigned) DCCG-1 connected (coupled) to downlink carrier element DCC-2 , DCC-3, DCC-4 including a downlink carrier element group DCCG-1 is configured and associated with an uplink carrier element (UCC-1).

  Thereby, as shown in FIG. 6, the base station apparatus and the mobile station apparatus are configured such that the downlink carrier element group (DCCG-0, DCCG-1) and the uplink carrier element (UCC-0, UCC-1) Can be made to communicate with each other (DCCG-0 and UCC-0 and DCCG-1 and UCC-1 in correspondence).

  That is, the base station apparatus uses downlink carrier element groups (DCCG-0, DCCG-1) (which can also be said to be arranged in DCCG-0 and DCCG-1) and transmits downlink information to the mobile station. The mobile station apparatus uses each uplink carrier element (UCC-0, UCC-1) corresponding to each downlink carrier element group, and arranges each in (UL-1 and UL-2). The uplink information is transmitted to the base station apparatus.

  For example, the base station apparatus transmits downlink data (eg, downlink user data, downlink transport block, for example) using PDSCH of DCCG-0 (also said to be arranged in DCCG-0). The mobile station apparatus transmits HARQ ACK / NACK for the downlink data using the PUCCH of UCC-0 corresponding to DCCG-0 (which can be said to be arranged in UCC-0). Similarly, the base station apparatus transmits downlink data (eg, downlink user data, downlink transport block) using PDSCH of DCCG-1 (also said to be arranged in DCCG-1). Then, the mobile station apparatus transmits HARQ ACK / NACK for the downlink data using the PUCCH of UCC-1 corresponding to DCCG-1 (which can be said to be arranged in UCC-1).

  This is because, in the mobile communication system in FIG. 6, the base station apparatus uses the PDSCH of each of the downlink carrier element groups (DCCG-0, DCCG-1) in the same subframe (simultaneously), and the downlink data (For example, downlink user data and downlink transport block) is transmitted to the mobile station apparatus, and the mobile station apparatus transmits the uplink corresponding to each of the downlink carrier element groups in the same subframe (simultaneously). This indicates that HARQ ACK / NACK for downlink data can be transmitted using the PUCCH of each of the carrier elements (UCC-0, UCC-1). Here, downlink data (for example, it can be said that downlink user data and downlink transport block) are transmitted on the PDSCH of each downlink carrier element group (DCCG-0, DCCG-1). Downlink data (for example, DCC-0, DCC-1, DCC-2, DCC-3, DCC-4 constituting DCCG-1) transmitted on the PDSCH of each carrier element (for example, DCCG-0 It may also be downlink user data or a downlink transport block).

  Further, the base station apparatus uses the PDCCH of each of the downlink carrier element groups (DCCG-0, DCCG-1) to allocate an uplink transmission permission signal (PDSCH resource allocation and PUSCH resource allocation information). The mobile station apparatus transmits uplink data (for example, uplink user data and uplink control data) according to the resource allocation information included in the uplink transmission permission signal (uplink grant). It transmits to a base station apparatus using PUSCH of each carrier element (UCC-0, UCC-1). Here, the PDCCH transmitted in each downlink carrier element group (DCCG-0, DCCG-1) is a downlink carrier element (that is, DCC-0, DCC-1, DCCG constituting DCCG-0). DCC-2, DCC-3, and DCC-4) that constitute -1 may be used. Further, the base station apparatus moves HARQ ACK / NACK for the uplink data using the PHICH of each downlink carrier element group (DCCG-0, DCCG-1) corresponding to the uplink carrier element. Send to station device.

  Here, another example (corresponding method) when the base station apparatus and the mobile station apparatus communicate with each other by making the downlink carrier element group and the uplink carrier element correspond to each other will be described.

  In FIG. 6, a DL system band having a bandwidth of 100 MHz is divided by a fundamental frequency (BF) having a bandwidth of 20 MHz, and downlink carrier elements (DCC-0, DCC-1, DCC-2, DCC) are divided. -3, DCC-4), and a UL system band having a bandwidth of 40 MHz is divided by a fundamental frequency (BF) having a bandwidth of 20 MHz, and uplink carrier elements (UCC-0, UCC- The base station apparatus and mobile station apparatus that constitute 1) may perform communication by alternately configuring the constituted downlink carrier elements and uplink carrier elements for each uplink carrier element. That is, in FIG. 6, the base station apparatus and the mobile station apparatus configure a downlink carrier element group DCCG-0 from DCC-0, DCC-2, and DCC-4, and DCCG-1 to DCC-1 and DCC- 3, DCCG-0 and UCC-0, and DCCG-1 and UCC-1 may correspond to each other to perform communication.

  In addition, the base station apparatus configures a downlink carrier element group from the DL system band indicating (instructing) a correspondence method between the downlink carrier element group and the uplink carrier element as described above. The information indicating (indicating) the method may be set for the mobile station apparatus using a radio resource control signal (RRC signaling). For example, the base station apparatus configures the downlink carrier element group in the direction in which the frequency increases (in the direction in which the index increases), and performs communication in association with the uplink carrier element, or the downlink station element group It is possible to set for the mobile station apparatus whether the carrier element and the uplink carrier element correspond to each other for each uplink carrier element to perform communication.

  Here, the mobile communication system shown in FIG. 6 has a capability of performing communication using a downlink carrier element (for example, DCC-0) and an uplink carrier element (for example, UCC-0). The mobile station apparatus can perform communication by associating the carrier elements included in the downlink carrier element group with the uplink carrier elements (for example, associating DCC-0 and UCC-0).

  Specifically, with an example, communication is performed using downlink carrier element groups (DCCG-0, DCCG-1) and uplink carrier elements (UCC-0, UCC-1). The LTE-A (Release 10) terminal having the capability is able to associate the downlink carrier element group with the uplink carrier element (DCCG-0 and UCC-0, and DCCG-1 and UCC-1). LTE with the ability to communicate using downlink carrier elements (eg, DCC-0) and uplink carrier elements (UCC-0). Release 8) The terminal performs communication by associating the downlink carrier element with the uplink carrier element (for example, making DCC-0 and UCC-0 correspond). Can Nau.

  Furthermore, LTE-A (with the ability to perform communication using downlink carrier element groups (DCCG-0, DCCG-1) and uplink carrier elements (UCC-0, UCC-1) ( Release 10) A specific terminal among the terminals may perform communication by associating a downlink carrier element with an uplink carrier element (for example, making DCC-0 and UCC-0 correspond).

  FIG. 7 is a diagram illustrating another example of a mobile communication system to which the second embodiment can be applied. In the mobile communication system shown in FIG. 7, the DL system band indicates a frequency band having a bandwidth of 80 MHz, the UL system band indicates a frequency band having a bandwidth of 60 MHz, and the basic frequency (BF) is A frequency band with a bandwidth of 20 MHz is shown. The mobile communication system shown in FIG. 7 is a mobile communication system in which the DL system bandwidth is larger than the UL system bandwidth (having a wide bandwidth).

  In FIG. 7, the base station apparatus and the mobile station apparatus divide a DL system band having a bandwidth of 80 MHz by a basic frequency (BF) having a bandwidth of 20 MHz, and downlink carrier elements (DCC-0, DCC-1, DCC-2, DCC-3). Here, the downlink carrier elements are indexed as DCC-0, DCC-1, DCC-2, and DCC-3 in the direction of increasing frequency. Further, the base station apparatus and the mobile station apparatus divide the UL system band having a bandwidth of 60 MHz by the basic frequency (BF) having a bandwidth of 20 MHz, and then generate uplink carrier elements (UCC-0, UCC- 1, UCC-2).

  Here, uplink carrier elements are indexed as UCC-0, UCC-1, and UCC-2 in the direction of increasing frequency. In the mobile communication system shown in FIG. 7, the number of downlink carrier elements (DCCN) is four, the number of uplink carrier elements (UCCN) is three, and the number of downlink carrier elements is The mobile communication system has a larger number than the number of uplink carrier elements.

  In FIG. 7, by dividing the DL system band and the UL system band by the basic frequency (BF), the number of downlink carrier elements and the number of uplink carrier elements are obtained (calculated) and the base station apparatus and the movement From the ratio, the station apparatus calculates the number of carrier elements (DCCNinDCCG) “1 (4/3 = 1.3, rounded down after the decimal point)” included in the number of one carrier element group in the downlink, and the calculated value Based on the above, downlink carrier elements are concatenated (combined) in order from lower frequency to higher frequency (in the direction of increasing frequency and in the direction of increasing index) to form a downlink carrier element group Then, it is made to correspond to the uplink carrier element.

  In FIG. 7, since the number of carrier elements included in one carrier element group in the downlink is “1”, the base station apparatus and the mobile station apparatus can use the downlink carrier elements (DCC-0, DCC-1, DCC-2, DCC-3) are connected (coupled) one by one in the order from the lowest frequency to the highest (in the direction of increasing frequency, in the direction of increasing index), and uplink carrier elements (UCC-0, UCC-1, UCC-2). That is, the downlink carrier element DCC-0 and the uplink carrier element UCC-0 are associated with each other, the downlink carrier element DCC-1 and the uplink carrier element UCC-1 are associated with each other, and the downlink carrier element DCC is associated with each other. -2, downlink carrier element group DCCG-0 including DCC-3 is associated with uplink carrier element UCC-2.

  Here, the downlink carrier elements remaining after dividing the downlink system band by the basic frequency (BF) are assigned downlink carrier elements adjacent to the lower frequency side (the previous index is assigned). Downlink carrier element) or carrier element group including a downlink carrier element adjacent to the lower frequency side (a carrier element including a downlink carrier element to which the previous index is assigned) Group) and combined as one carrier element group.

  That is, in FIG. 7, the downlink carrier element DCC-3 obtained by dividing the downlink system band by the basic frequency (BF) is assigned to the carrier element adjacent to the lower frequency side (an index one before). Carrier element) DCC-2 is coupled (coupled) to form a downlink carrier element group DCCG-0 including downlink carrier elements DCC-2 and DCC-3, and uplink carrier elements (UCC-2).

  In FIG. 7, a DL system band having a bandwidth of 80 MHz is divided by a basic frequency (BF) having a bandwidth of 20 MHz, and downlink carrier elements (DCC-0, DCC-1, DCC-2) are divided. DCC-3), and a UL system band having a bandwidth of 60 MHz is divided by a basic frequency (BF) having a bandwidth of 20 MHz, and uplink carrier elements (UCC-0, UCC-1, The base station apparatus and mobile station apparatus that configure UCC-2) may perform communication by alternately configuring the configured downlink carrier element and uplink carrier element for each uplink carrier element. That is, in FIG. 7, the base station apparatus and the mobile station apparatus configure a downlink carrier element group DCCG-0 from DCC-0 and DCC-3, and DCCG-0 and UCC-0, DCC-1 and UCC- 1, DCC-2 and UCC-2 may be communicated with each other.

  Thereby, as shown in FIG. 7, the base station apparatus and the mobile station apparatus can use the downlink carrier elements and carrier element groups (DCC-0, DCC-1, DCCG-0, or DCCG-0, DCC-1). , DCC-2) and uplink carrier elements (UCC-0, UCC-1, UCC-2) are associated with each other (DCC-0 and UCC-0, DCC-1 and UCC-1, DCCG). -0 and UCC-2, or DCCG-0 and UCC-0, DCC-1 and UCC-1, and DCC-2 and UCC-2).

  FIG. 8 is a diagram illustrating another example of a mobile communication system to which the second embodiment can be applied. In the mobile communication system shown in FIG. 8, the DL system band indicates a frequency band having a bandwidth of 40 MHz, the UL system band indicates a frequency band having a bandwidth of 100 MHz, and the basic frequency (BF) is A frequency band with a bandwidth of 20 MHz is shown. The mobile communication system shown in FIG. 8 is a mobile communication system in which the UL system bandwidth is larger than the DL system bandwidth (having a wider bandwidth).

  In FIG. 8, the base station apparatus and the mobile station apparatus divide a DL system band having a bandwidth of 40 MHz by a basic frequency (BF) having a bandwidth of 20 MHz, and downlink carrier elements (DCC-0, DCC-1). Here, downlink carrier elements are indexed as DCC-0 and DCC-1 in the direction of increasing frequency. Also, the base station apparatus and the mobile station apparatus divide the UL system band having a bandwidth of 100 MHz by the fundamental frequency (BF) having a bandwidth of 20 MHz, and then generate uplink carrier elements (UCC-0, UCC- 1, UCC-2, UCC-3, UCC-4).

  Here, uplink carrier elements are indexed as UCC-0, UCC-1, UCC-2, UCC-3, and UCC-4 in the direction of increasing frequency. In the mobile communication system shown in FIG. 8, the number of downlink carrier elements (DCCN) is two, the number of uplink carrier elements (UCCN) is five, and the number of uplink carrier elements is The mobile communication system has a number larger than the number of downlink carrier elements.

  In FIG. 8, by dividing the DL system band and the UL system band by the basic frequency (BF), the number of downlink carrier elements and the number of uplink carrier elements obtained (calculated) and the base station apparatus and the movement From the ratio, the station apparatus determines the number of carrier elements included in one uplink carrier element group (UCCNinUCCG: Uplink Carrier Component Number in Uplink Carrier Component Group, Uplink Component Carrier Number in Uplink Component Carrier Group). calculate. That is, the base station apparatus and mobile station apparatus determine the number of carrier elements included in one uplink carrier element group from the number of downlink carrier elements “2” and the number of uplink carrier elements “5”. (UCCNinUCCG) “2 (5/2 = 2.5, rounded down after decimal point)” is calculated, and one uplink carrier element group is composed of “two” carrier elements (“two” carriers) One carrier element group is composed of elements).

  When the number of uplink carrier elements is greater than the number of downlink carrier elements, the base station apparatus and the mobile station apparatus can determine that “the number of uplink carrier elements (UCCN) / the number of downlink carrier elements (DCCN). ) ”, The number of carrier elements (UCCNinUCCG) included in one uplink carrier element group is calculated.

  The base station apparatus and mobile station apparatus in which the number of carrier elements included in one uplink carrier element group is calculated from the number of downlink carrier elements and the number of uplink carrier elements are higher from the lowest frequency In order (in the direction of increasing frequency, in the direction of increasing index), uplink carrier elements are connected (combined) to form an uplink carrier element group and correspond to downlink carrier elements. To go.

  In FIG. 8, since the number of uplink carrier elements included in one uplink carrier element group is “2”, the base station apparatus and the mobile station apparatus use uplink carrier elements (UCC-0, UCC). -1, UCC-2, UCC-3, UCC-4) are connected (coupled) two by two in order from the lowest frequency to the highest (in the direction of increasing frequency and in the direction of increasing index). Then, an uplink carrier element group (UCCG-0, UCCG-1) is configured and associated with downlink carrier elements (DCC-0, DCC-1). That is, an uplink carrier element group UCCG-0 is configured from uplink carrier elements UCC-0 and UCC-1 (UCCC-1 including UCC-0 and UCC-1 is configured), and a downlink Corresponding to the carrier element DCC-0, an uplink carrier element group UCCG-1 is formed from the uplink carrier elements UCC-2 and UCC-3 (DCCG-1 including UCC-2 and UCC-3 is included). Configured) and correspond to the downlink carrier element DCC-1.

  Here, the uplink carrier elements remaining after dividing the uplink system band by the basic frequency (BF) are assigned uplink carrier elements adjacent to the lower frequency side (the previous index is assigned). An uplink carrier element) or a carrier element group including an uplink carrier element adjacent to a lower frequency side (a carrier element including an uplink carrier element to which the previous index is assigned) Group) and combined as one carrier element group.

  That is, in FIG. 8, the uplink carrier element UCC-4 remaining after dividing the uplink system band by the basic frequency (BF) is the downlink carrier element (UCC-3) adjacent to the lower frequency side. Element group (carrier element group including downlink carrier element UCC-3 to which the previous index is assigned) UCCG-1 connected (combined) with uplink carrier element UCC-2 , UCC-3, and UCC-4, a downlink carrier element group UCCG-1 is configured and associated with a downlink carrier element (DCC-1).

  Here, another example (corresponding method) when the base station apparatus and the mobile station apparatus communicate with each other by making the downlink carrier element and the uplink carrier element group correspond to each other will be described.

  In FIG. 8, a DL system band having a bandwidth of 40 MHz is divided by a basic frequency (BF) having a bandwidth of 20 MHz to form downlink carrier elements (DCC-0, DCC-1), and 100 MHz. Is divided by a basic frequency (BF) having a bandwidth of 20 MHz, and uplink carrier elements (UCC-0, UCC-1, UCC-2, UCC-3, UCC- The base station apparatus and mobile station apparatus that constitute 4) may perform communication by alternately configuring the constituted downlink carrier elements and uplink carrier elements for each downlink carrier element. That is, in FIG. 8, the base station apparatus and the mobile station apparatus configure uplink carrier element group UCCG-0 from UCC-0, UCC-2, and UCC-4, and UCCG-1 as UCC-1 and UCC-. 3, DCC-0 and UCCG-0, and DCC-1 and UCCG-1 may correspond to each other to perform communication.

  Also, the base station apparatus configures an uplink carrier element group from the UL system band indicating (instructing) a correspondence method between the downlink carrier element and the uplink carrier element group as described above. The information indicating (indicating) the method may be set for the mobile station apparatus using a radio resource control signal (RRC signaling). For example, the base station apparatus configures the uplink carrier element group in the direction in which the frequency increases (in the direction in which the index increases) and performs communication in correspondence with the downlink carrier element, or the downlink station element group It can be set for the mobile station apparatus whether the carrier element and the uplink carrier element correspond to each other for each downlink carrier element to perform communication.

  Thereby, as shown in FIG. 8, the base station apparatus and the mobile station apparatus are configured so that downlink carrier elements (DCC-0, DCC-1) and uplink carrier element groups (UCCG-0, UCCG-1) Can be made to communicate with each other (DCC-0 and UCCG-0, DCC-1 and UCCG-1).

  Here, in the mobile communication system shown in FIG. 8, when the base station apparatus and the mobile station apparatus communicate with each other, a part of the uplink included in the uplink carrier element group (UCCG-0, UCCG-1). Information that can be transmitted using a plurality of carrier elements (in this example, UCC-1, UCC-3, and UCC-4 are used as some carrier elements) and some uplink carrier elements. A mobile station apparatus that can use uplink channels arranged in (UCC-1, UCC-3, UCC-4) will be described with reference to FIG. FIG. 9 is a diagram showing a mobile communication system similar to FIG.

  As described above, in the mobile communication system shown in FIG. 9, the base station apparatus and the mobile station apparatus configure a downlink carrier element and an uplink carrier element group from the DL system band and the UL system band. Communicate with each other. At this time, the base station apparatus and the mobile station apparatus are configured such that some uplink carrier elements (UCC-1, UCC-3, UCC-4) included in the uplink carrier element group (UCCG-0, UCCG-1). The communication can be performed by restricting the uplink information that can be transmitted in ().

  FIG. 9 illustrates a physical uplink shared channel (hereinafter referred to as PUSCH, indicated by a left-upward oblique line) and a physical uplink control channel (hereinafter referred to as “uplink”) used when the base station apparatus and the mobile station apparatus transmit uplink information. PUCCH, indicated by a diagonal line rising to the right). Here, as an example, PUSCH and PUCCH are described, but other uplink channels are similarly defined in the specification and placed in the UL system band. In FIG. 9, PUCCH is described so as to be distributed and arranged at both end portions (edge portions) of uplink carrier elements (UCC-0, UCC-1, UCC-2, UCC-3, UCC-4). is doing.

  The base station apparatus and the mobile station apparatus, as shown by a dotted line in FIG. 9, include some uplink carrier elements (UCC-1, 0CC-1) included in the uplink carrier element group (UCCG-0, UCCG-1). Communication can be performed by limiting information that can be transmitted on uplink channels (for example, PUSCH, PUCCH, PRACH, etc.) arranged in UCC-3 and UCC-4). For example, the mobile station apparatus restricts information that can be transmitted on the PUCCH arranged in some uplink carrier elements (UCC-1, UCC-3, UCC-4), and is dynamically scheduled. ACK / NACK for PDSCH is not transmitted.

  That is, the mobile station apparatus transmits ACK / NACK for the dynamically scheduled PDSCH only on the PUCCH of the uplink carrier element (UCC-0, UCC-2) that does not restrict the information that can be transmitted. However, in the PUCCH of the uplink carrier elements (UCC-1, UCC-3, UCC-4) that restrict the information that can be transmitted, other information (for example, semi-persistent (semi-persistent)) is scheduled. ACK / NACK for PDSCH, channel state information (CQI, PMI, RI), scheduling request (SR), etc.) are transmitted.

  Here, similarly to the mobile communication system described above, the mobile communication system shown in FIG. 9 has the capability to perform communication by associating, for example, downlink carrier elements with uplink carrier elements. An LTE (release 8) terminal performs communication by associating a downlink carrier element with an uplink carrier element (for example, associating DCC-0 and UCC-0). An LTE-A (Release 10) terminal capable of performing communication by associating a downlink carrier element (for example, DCC-0) with an uplink carrier element group (UCCG-0), Communication is performed by associating a downlink carrier element with an uplink carrier element group (for example, by associating DCC-0 and UCCG-0).

  That is, in the mobile communication system shown in FIG. 9, for example, an LTE (release 8) terminal uses the PUCCH of the uplink carrier element (UCC-0) corresponding to the downlink carrier element (DCC-0). ACK / NACK for PDSCH scheduled dynamically, ACK / NACK for PDSCH scheduled semi-persistent, channel state information (CQI, PMI, RI), scheduling request (SR) or the like is transmitted to the base station apparatus.

  On the other hand, the LTE-A (Release 10) terminal is a part of the carrier elements included in the uplink carrier element group (UCCG-0, UCCG-1) (carrier elements whose transmission information is not limited, for example, UCC ACK / NACK for dynamically scheduled PDSCH is transmitted to the base station apparatus using PUCCH of −0). At this time, the LTE-A (Release 10) terminal performs dynamic (motion) by associating the LTE (Release 8) terminal with the downlink carrier element (DCC-0) and the uplink carrier element (UCC-0). ACK / NACK for dynamically scheduled PDSCH using the same framework (mechanism) and the same framework (mechanism) used for transmitting ACK / NACK for scheduled PDSCH It can be transmitted to the station device.

  Furthermore, the LTE-A (Release 10) terminal uses a part of carrier elements included in the uplink carrier element group (UCCG-0, UCCG-1) (a carrier element that restricts information that can be transmitted, for example, UCC-1 ) Of PUCCH of the semi-persistent (semi-persistent) scheduled PDSCH, information such as channel state information (CQI, PMI, RI), scheduling request (SR), etc. Send to device.

  As described above, the base station apparatus and the mobile station apparatus limit information transmitted for different uses (purposes and intentions) in some uplink carrier elements included in the uplink carrier element group. By using the same framework (mechanism), mobile station apparatuses having different capabilities can transmit information transmitted for a certain use (purpose, intention) within the same carrier element (for example, UCC-0). Information transmitted for different purposes (purposes, intentions) can be transmitted between different carrier elements (for example, UCC-0, UCC-1), and have different capabilities. The mobile station apparatus can coexist with higher affinity in the same mobile communication system.

  In addition, in the mobile communication system shown in FIG. 9, some uplink carrier elements (UCC-1, UCC-3, UCCG-4) included in the uplink carrier element group (UCCG-0, UCCG-1). The mobile station apparatus that can use the uplink channel arranged in the network may be restricted.

  That is, in the mobile communication system of FIG. 9, uplink channels (for example, PUSCH, PUCCH, PRACH, etc.) arranged in some uplink carrier elements (UCC-1, UCC-3, UCC-4) are assigned. The mobile station apparatus that can be used can be limited to, for example, only LTE-A (release 9, release 10) terminals.

  Thereby, the LTE (release 8) terminal uses only a combination of a limited downlink carrier element and an uplink carrier element (a combination of DCC-0 and UCC-0, DCC-1 and DCC-2). (That is, there is no LTE (Release 8) terminal that performs communication in association with DCC-0 and UCC-1, DCC-1 and UCC-3, and DCC-1 and UCC-4). LTE-A (Release 9, Release 10) terminals can be preferentially allocated to UCC-1, UCC-3, UCC-4, and mobile station apparatuses having different capabilities can be allocated to the same mobile communication system. It becomes possible to coexist more efficiently.

  As described above, in the second embodiment, the base station apparatus and the mobile station apparatus use a downlink carrier element and an uplink carrier element in combination to operate as a wideband system band. When performing communication, the downlink system band is divided by the basic frequency (BF) to form a plurality of downlink carrier elements, and the uplink system band is divided by the basic frequency (BF), The number of downlink carrier elements obtained by configuring a plurality of uplink carrier elements and dividing the downlink system band, and the uplink carriers obtained by dividing the uplink system band Configure the downlink carrier element group or the uplink carrier element group from the ratio with the number of elements, and the downlink carrier element group And / or carrier element groups and uplink carrier elements and / or carrier element groups are communicated with each other so that downlink carriers can be easily transferred from downlink system bands and uplink system bands. It is possible to configure elements / carrier element groups and / or uplink carrier elements / carrier element groups and use them to realize efficient communication (transmission and reception of information).

  Further, the base station apparatus transmits uplink information (for example, HARQ ACK / NACK for downlink user data) corresponding to information (for example, downlink user data) transmitted in the downlink, to which carrier element in the uplink and It is not necessary to transmit a control signal (control information) indicating whether to transmit using a carrier element group, and communication (information transmission / reception) using radio resources efficiently can be performed.

(Third embodiment)
Next, a third embodiment of the present invention will be described. As in the first and second embodiments, the third embodiment of the present invention uses a downlink carrier element and an uplink carrier element in combination and operates as a wideband system band. It can be applied to a mobile communication system, a base station apparatus, and a mobile station apparatus for communication. Hereinafter, the same parts as those described in the first embodiment and the second embodiment are omitted.

  The base station apparatus and mobile station apparatus in the third embodiment divide a downlink system band (DL system band) by a basic frequency (BF) (also called a basic frequency bandwidth (BFB)), and A downlink carrier element is configured, and an uplink system band (UL system band) is divided by a fundamental frequency (BF) to configure a plurality of uplink carrier elements. At this time, the downlink carrier element And the number of uplink carrier elements is equal, the DL system band includes downlink carrier elements that are less than the fundamental frequency, and the UL system band includes uplink carrier elements that are less than the fundamental frequency. If included, the downlink carrier element and the uplink carrier element that do not satisfy the fundamental frequency are associated with each other for communication. Can Nau.

  Further, in this case, if the number of downlink carrier elements is larger than the number of uplink carrier elements and the UL system band includes an uplink carrier element less than the fundamental frequency, the downlink carrier element Thus, it is possible to perform communication by associating uplink carrier elements less than the fundamental frequency with each other.

  Furthermore, at this time, if the number of downlink carrier elements is larger than the number of uplink carrier elements and the DL system band includes downlink carrier elements that are less than the fundamental frequency, the number is not less than the fundamental frequency. A downlink carrier element is formed by linking a downlink carrier element with an adjacent downlink carrier element or a carrier element group including an adjacent downlink carrier element to form a downlink carrier element group. Communication can be performed with the group and uplink carrier elements associated with each other.

  Further, in this case, if the number of uplink carrier elements is larger than the number of downlink carrier elements and the DL system band includes downlink carrier elements that do not satisfy the fundamental frequency, the uplink carrier elements It is possible to perform communication by associating downlink carrier elements less than the fundamental frequency with each other.

  Further, at this time, if the number of uplink carrier elements is larger than the number of downlink carrier elements and the UL system band includes an uplink carrier element that does not satisfy the fundamental frequency, the fundamental frequency is not satisfied. An uplink carrier element is formed by linking an uplink carrier element with an adjacent uplink carrier element or a carrier element group including an adjacent uplink carrier element to form an uplink carrier element group. Communication can be performed by making the group and downlink carrier elements correspond to each other.

  FIG. 10 is a diagram illustrating an example of a mobile communication system to which the third embodiment can be applied. In the mobile communication system shown in FIG. 10, the DL system band indicates a frequency band having a bandwidth of 70 MHz, the UL system band indicates a frequency band having a bandwidth of 70 MHz, and the basic frequency (BF) is A frequency band with a bandwidth of 20 MHz is shown. Here, the mobile communication system shown in FIG. 10 is a mobile communication system in which the bandwidth of the DL system band and the bandwidth of the UL system band are the same (equal), and the DL system band and the UL system band are respectively set to the fundamental frequency. When dividing by (BF), there is a surplus in both the DL system band and the UL system band (both the DL system band and the UL system band cannot be divided at the basic frequency of 20 MHz), and the downlink frequency is less than the basic frequency (BF). The mobile communication system includes a carrier element and an uplink carrier element.

  In FIG. 10, the base station apparatus and the mobile station apparatus divide a DL system band having a bandwidth of 70 MHz by a basic frequency (BF) having a bandwidth of 20 MHz, and downlink carrier elements (DCC-0, DCC-1, DCC-2, DCC-3). At this time, the base station apparatus and the mobile station apparatus were obtained by dividing the remaining downlink carrier elements that could not divide the DL system band by the basic frequency (BF) (in this example, 70 MHz was divided by 20 MHz). A downlink carrier element having a bandwidth of 10 MHz is obtained by dividing another downlink carrier element (a downlink carrier element that can be divided by a basic frequency (BF), in this example, 70 MHz by 20 MHz). Indexed before (three downlink carrier elements with a bandwidth of 20 MHz).

  That is, as shown in FIG. 10, the base station apparatus and the mobile station apparatus convert the downlink carrier element having a bandwidth of 10 MHz obtained by dividing the DL system band by the fundamental frequency (BF) DCC-0 is indexed (preceding) before the downlink carrier element, and then the three downlink carrier elements having a bandwidth of 20 MHz are added in the direction of increasing frequency, DCC-1, DCC- 2. Index with DCC-3.

  Further, the base station apparatus and the mobile station apparatus divide the UL system band having a bandwidth of 70 MHz by the basic frequency (BF) having a bandwidth of 20 MHz, and then generate uplink carrier elements (UCC-0, UCC- 1, UCC-2, UCC-3). At this time, the base station apparatus and the mobile station apparatus are obtained by dividing the uplink carrier element of the remainder of the UL system band that cannot be divided by the basic frequency (BF) (in this example, 70 MHz is divided by 20 MHz). An uplink carrier element having a bandwidth of 10 MHz is obtained by dividing another uplink carrier element (an uplink carrier element that can be divided by a basic frequency (BF), in this example, 70 MHz by 20 MHz). Indexed before (three uplink carrier elements with a bandwidth of 20 MHz).

  That is, as shown in FIG. 10, the base station device and the mobile station device use the uplink carrier element having a bandwidth of 10 MHz obtained by dividing the UL system band by the basic frequency (BF) UCC-0 is indexed (preceding) before the uplink carrier element, and then three uplink carrier elements having a bandwidth of 20 MHz are increased in the direction of increasing frequency UCC-1, UCC-. 2. Index with UCC-3.

  Here, the mobile communication system shown in FIG. 10 has four downlink carrier elements (DCCN), four uplink carrier elements (UCCN), and four downlink carrier elements. And the number of uplink carrier elements are the same (equal).

  By dividing the DL system band and the UL system band by the basic frequency (BF), the downlink carrier element and the uplink carrier element are configured, and the base station apparatus and mobile station apparatus indexed as described above are as follows: As shown in FIG. 9, communication is performed in such a manner that a downlink carrier element and an uplink carrier element correspond to each other.

  FIG. 11 shows another example of a mobile communication system to which the third embodiment can be applied. In the mobile communication system shown in FIG. 11, the DL system band indicates a frequency band having a bandwidth of 80 MHz, the UL system band indicates a frequency band having a bandwidth of 70 MHz, and the basic frequency (BF) is A frequency band with a bandwidth of 20 MHz is shown. Here, the mobile communication system shown in FIG. 11 is a mobile communication system in which the bandwidth of the DL system band is larger (having a wider bandwidth) than the bandwidth of the UL system band, and the DL system band and the UL system. When each band is divided by the basic frequency (BF), a remainder is generated in the UL system band (the UL system band cannot be divided at the basic frequency of 20 MHz), and the uplink carrier element does not satisfy the basic frequency (BF). Is a mobile communication system.

  In FIG. 11, the base station apparatus and the mobile station apparatus divide a DL system band having a bandwidth of 80 MHz by a basic frequency (BF) having a bandwidth of 20 MHz to configure a downlink carrier element. As shown in FIG. 11, indexes (DCC-0, DCC-1, DCC-2, DCC-3) are indexed in the direction in which the frequency increases. Further, the base station apparatus and the mobile station apparatus divide the UL system band having a bandwidth of 70 MHz by the basic frequency (BF) having a bandwidth of 20 MHz, and then generate uplink carrier elements (UCC-0, UCC- 1, UCC-2, UCC-3). At this time, the base station apparatus and the mobile station apparatus are obtained by dividing the uplink carrier element of the remainder of the UL system band that cannot be divided by the basic frequency (BF) (in this example, 70 MHz is divided by 20 MHz). Uplink carrier elements having a bandwidth of 10 MHz) and other uplink carrier elements (in this example, three uplink carrier elements having a bandwidth of 20 MHz obtained by dividing 70 MHz by 20 MHz) ) Before (before).

  That is, as shown in FIG. 11, the base station device and the mobile station device use the uplink carrier element having a bandwidth of 10 MHz obtained by dividing the UL system band by the basic frequency (BF) UCC-0 is indexed (preceding) before the uplink carrier element, and then three uplink carrier elements having a bandwidth of 20 MHz are increased in the direction of increasing frequency UCC-1, UCC-. 2. Index with UCC-3.

  Here, in the mobile communication system shown in FIG. 11, the number of downlink carrier elements (DCCN) is four, the number of uplink carrier elements (UCCN) is four, and the downlink carrier elements are And the number of uplink carrier elements are the same (equal).

  By dividing the DL system band and the UL system band by the basic frequency (BF), the downlink carrier element and the uplink carrier element are configured, and the base station apparatus and mobile station apparatus indexed as described above are as follows: As shown in FIG. 11, communication is performed in such a manner that a downlink carrier element and an uplink carrier element correspond to each other.

  FIG. 12 shows another example of a mobile communication system to which the third embodiment can be applied. In the mobile communication system shown in FIG. 12, the DL system band indicates a frequency band having a bandwidth of 80 MHz, the UL system band indicates a frequency band having a bandwidth of 50 MHz, and the basic frequency (BF) is A frequency band with a bandwidth of 20 MHz is shown. The mobile communication system shown in FIG. 12 is a mobile communication system in which the bandwidth of the DL system band is larger (having a wider bandwidth) than the bandwidth of the UL system band, and the DL system band and the UL system band are If each is divided by the basic frequency (BF), a surplus is generated in the UL system band (the UL system band cannot be divided by the basic frequency of 20 MHz), and uplink carrier elements less than the basic frequency (BF) are included. It is a mobile communication system.

  In FIG. 12, the base station apparatus and the mobile station apparatus divide a DL system band having a bandwidth of 80 MHz by a basic frequency (BF) having a bandwidth of 20 MHz to configure a downlink carrier element. As shown in FIG. 12, indexes (DCC-0, DCC-1, DCC-2, DCC-3) are indexed in the direction in which the frequency increases. Further, the base station apparatus and the mobile station apparatus divide the UL system band having a bandwidth of 50 MHz by the basic frequency (BF) having a bandwidth of 20 MHz, and then generate uplink carrier elements (UCC-0, UCC- 1, UCC-2). At this time, the base station device and the mobile station device are obtained by dividing the UL carrier band that is not enough to divide the UL system band by the basic frequency (BF) (in this example, 50 MHz is divided by 20 MHz). Two uplink carrier elements having a bandwidth of 20 MHz obtained by dividing 50 MHz by 20 MHz from another uplink carrier element (in this example, an uplink carrier element having a bandwidth of 10 MHz) ) Before (before).

  That is, as shown in FIG. 12, the base station device and the mobile station device use the uplink carrier element having a bandwidth of 10 MHz obtained by dividing the UL system band by the fundamental frequency (BF) UCC-0 is indexed before the uplink carrier element, and then two uplink carrier elements having a bandwidth of 20 MHz are indexed as UCC-1 and UCC-2 in the direction of increasing frequency. .

  Here, in the mobile communication system shown in FIG. 12, the number of downlink carrier elements (DCCN) is four, the number of uplink carrier elements (UCCN) is three, and the number of downlink carrier elements is This is a mobile communication system whose number is larger (larger) than the number of uplink carrier elements.

  In FIG. 12, by dividing the DL system band and the UL system band by the basic frequency (BF), the number of downlink carrier elements and the number of uplink carrier elements are obtained (calculated) and the base station apparatus and the movement From the ratio, the station apparatus calculates the number of carrier elements (DCCNinDCCG) “1 (4/3 = 1.3, rounded down to the nearest decimal point)” included in one downlink carrier element group, and calculates the calculated value. Based on this, the downlink carrier elements are concatenated (combined) in order from the lowest frequency to the higher frequency (in the direction of increasing frequency and in the direction of increasing index) to form a downlink carrier element group. And corresponding to the uplink carrier element. In addition, the remaining downlink carrier elements that cannot be divided are linked to the downlink carrier element adjacent to the lower frequency side or the carrier element group including the downlink carrier element adjacent to the lower frequency side. (Combined) and combined into one carrier element group.

  That is, the base station apparatus and the mobile station apparatus associate the downlink carrier elements and the downlink carrier element groups with the uplink carrier elements as shown in FIG. 12 (DCC-0, UCC-0, DCC- 1 and UCC-1 and DCCG-0 and UCC-2).

  In FIG. 12, the DL system band and the UL system band are divided by the basic frequency (BF) to obtain (calculate) the number of downlink carrier elements and the number of uplink carrier elements. The mobile station apparatus may perform communication by associating the configured downlink carrier element and uplink carrier element with each other for each uplink carrier element. That is, in FIG. 12, the base station apparatus and the mobile station apparatus configure a downlink carrier element group DCCG-0 from DCC-0 and DCC-3, and DCCG-0 and UCC-0, DCC-1 and UCC- 1, DCC-2 and UCC-2 may be communicated with each other.

  FIG. 13 shows another example of a mobile communication system to which the third embodiment can be applied. In the mobile communication system shown in FIG. 13, the DL system band indicates a frequency band having a bandwidth of 70 MHz, the UL system band indicates a frequency band having a bandwidth of 80 MHz, and the basic frequency (BF) is A frequency band with a bandwidth of 20 MHz is shown. The mobile communication system shown in FIG. 13 is a mobile communication system in which the UL system bandwidth is larger than the DL system bandwidth (having a wider bandwidth). When dividing by frequency (BF), there is a surplus in the DL system band (the DL system band cannot be divided by the basic frequency of 20 MHz), and mobile communication including a downlink carrier element less than the basic frequency (BF) System.

  In FIG. 12, the base station apparatus and the mobile station apparatus divide a DL system band having a bandwidth of 70 MHz by a basic frequency (BF) having a bandwidth of 20 MHz to form a downlink carrier element (DCC- 0, DCC-1, DCC-2, DCC-3). At this time, the base station apparatus and the mobile station apparatus were obtained by dividing the remaining downlink carrier elements that could not divide the DL system band by the basic frequency (BF) (in this example, 70 MHz was divided by 20 MHz). Three downlink carrier elements having a bandwidth of 20 MHz obtained by dividing 70 MHz by 20 MHz from another downlink carrier element (in this example, a downlink carrier element having a bandwidth of 10 MHz) ) Before (before).

  That is, as shown in FIG. 13, the base station apparatus and the mobile station apparatus convert the downlink carrier element having a bandwidth of 10 MHz obtained by dividing the DL system band by the fundamental frequency (BF) DCC-0 is indexed (preceding) before the downlink carrier element, and then the three downlink carrier elements having a bandwidth of 20 MHz are added in the direction of increasing frequency, DCC-1, DCC- 2. Index with DCC-3.

  In addition, the base station apparatus and the mobile station apparatus divide the UL system band having a bandwidth of 80 MHz by a basic frequency (BF) having a bandwidth of 20 MHz to form an uplink carrier element. As shown, indexes (UCC-0, UCC-1, UCC-2, UCC-3) are used in the direction of increasing frequency.

  Here, the mobile communication system shown in FIG. 13 has four downlink carrier elements (DCCN), four uplink carrier elements (UCCN), and four downlink carrier elements. And the number of uplink carrier elements are the same (equal).

  By dividing the DL system band and the UL system band by the basic frequency (BF), the downlink carrier element and the uplink carrier element are configured, and the base station apparatus and mobile station apparatus indexed as described above are as follows: As shown in FIG. 13, communication is performed in such a manner that a downlink carrier element and an uplink carrier element correspond to each other.

  FIG. 14 shows another example of a mobile communication system to which the third embodiment can be applied. In the mobile communication system shown in FIG. 14, the DL system band indicates a frequency band having a bandwidth of 50 MHz, the UL system band indicates a frequency band having a bandwidth of 80 MHz, and the basic frequency (BF) is A frequency band with a bandwidth of 20 MHz is shown. The mobile communication system shown in FIG. 14 is a mobile communication system in which the bandwidth of the UL system band is larger than the bandwidth of the DL system band (having a wide bandwidth), and the DL system band and the UL system band are When each is divided by the basic frequency (BF), a remainder is generated in the DL system band (the DL system band cannot be divided at the basic frequency of 20 MHz), and downlink carrier elements less than the basic frequency (BF) are included. It is a mobile communication system.

  In FIG. 14, the base station apparatus and the mobile station apparatus divide a DL system band having a bandwidth of 50 MHz by a basic frequency (BF) having a bandwidth of 20 MHz, and downlink carrier elements (DCC-0, DCC-1, DCC-2). At this time, the base station apparatus and the mobile station apparatus are obtained by dividing the remaining downlink carrier element (in this example, 50 MHz by 20 MHz) that could not be divided into the DL system band by the basic frequency (BF). Two downlink carrier elements having a bandwidth of 20 MHz obtained by dividing 50 MHz by 20 MHz from another downlink carrier element (in this example, a downlink carrier element having a bandwidth of 10 MHz) ) Before (before).

  That is, as shown in FIG. 14, the base station device and the mobile station device use the downlink carrier element having a bandwidth of 10 MHz obtained by dividing the DL system band by the fundamental frequency (BF) DCC-0 is indexed before the downlink carrier element, and then two downlink carrier elements having a bandwidth of 20 MHz are indexed as DCC-1 and DCC-2 in the direction of increasing frequency. .

  Further, the base station apparatus and the mobile station apparatus divide the UL system band having a bandwidth of 80 MHz by a basic frequency (BF) having a bandwidth of 20 MHz to form an uplink carrier element. As shown, indexes (UCC-0, UCC-1, UCC-2, UCC-3) are used in the direction of increasing frequency.

  Here, in the mobile communication system shown in FIG. 14, the number of downlink carrier elements (DCCN) is three, the number of uplink carrier elements (UCCN) is four, and the number of uplink carrier elements is This is a mobile communication system whose number is larger (larger) than the number of downlink carrier elements.

  In FIG. 14, by dividing the DL system band and the UL system band by the basic frequency (BF), the number of downlink carrier elements and the number of uplink carrier elements are obtained (calculated) and the base station apparatus and the movement From the ratio, the station apparatus calculates the number of carrier elements (UCCNinUCCG) “1 (4/3 = 1.3, rounded down to the nearest decimal point) included in one uplink carrier element group, and sets the calculated value to Based on this, in order from the lowest frequency to the higher frequency (in the direction of increasing frequency, in the direction of increasing index), uplink carrier elements are connected (combined) to form an uplink carrier element group. And corresponding to the downlink carrier element. Also, the remaining uplink carrier elements that cannot be divided are linked to an uplink carrier element adjacent to the lower frequency side or a carrier element group including an uplink carrier element adjacent to the lower frequency side. (Combined) and combined into one carrier element group.

  That is, the base station apparatus and the mobile station apparatus associate the downlink carrier element with the uplink carrier element and the uplink carrier element group as shown in FIG. 14 (DCC-0, UCC-0, DCC- 1 and UCC-1 and DCC-2 and UCCG-0) to communicate with each other.

  Further, in FIG. 14, the DL system band and the UL system band are divided by the basic frequency (BF), thereby obtaining (calculating) the number of downlink carrier elements and the number of uplink carrier elements. The mobile station apparatus may perform communication by associating the configured downlink carrier element and uplink carrier element with each other for each downlink carrier element. That is, in FIG. 14, the base station apparatus and the mobile station apparatus configure uplink carrier element group UCCG-0 from UCC-0 and UCC-3, and DCC-0 and UCCG-0, DCC-1 and UCC- 1, DCC-2 and UCC-2 may be communicated with each other.

  FIG. 15 shows another example of a mobile communication system to which the third embodiment can be applied. In the mobile communication system shown in FIG. 15, the DL system band indicates a frequency band having a bandwidth of 70 MHz, the UL system band indicates a frequency band having a bandwidth of 60 MHz, and the basic frequency (BF) is A frequency band with a bandwidth of 20 MHz is shown. The mobile communication system shown in FIG. 15 is a mobile communication system in which the DL system bandwidth is larger than the UL system bandwidth (having a wide bandwidth), and the DL system bandwidth and the UL system bandwidth are When each is divided by the basic frequency (BF), a remainder is generated in the DL system band (the DL system band cannot be divided at the basic frequency of 20 MHz), and downlink carrier elements less than the basic frequency (BF) are included. It is a mobile communication system.

  In FIG. 14, the base station apparatus and the mobile station apparatus divide a DL system band having a bandwidth of 70 MHz by a basic frequency (BF) having a bandwidth of 20 MHz, and downlink carrier elements (DCC-0, DCC-1, DCC-2, DCC-3). At this time, the base station apparatus and the mobile station apparatus were obtained by dividing the remaining downlink carrier elements that could not divide the DL system band by the basic frequency (BF) (in this example, 70 MHz was divided by 20 MHz). Three downlink carrier elements having a bandwidth of 20 MHz obtained by dividing 70 MHz by 20 MHz from another downlink carrier element (in this example, a downlink carrier element having a bandwidth of 10 MHz) ) After (after).

  That is, as shown in FIG. 15, the base station apparatus and the mobile station apparatus divide three downlink carrier elements having a bandwidth of 20 MHz obtained by dividing the UL system band by the basic frequency (BF), DCC-0, DCC-1, and DCC-2 are indexed in the direction of increasing frequency, and then downlink carrier elements having a bandwidth of 10 MHz are indexed as DCC-3.

  In addition, the base station apparatus and the mobile station apparatus divide the UL system band having a bandwidth of 60 MHz by the basic frequency (BF) having a bandwidth of 20 MHz to form an uplink carrier element. As shown, indexes (UCC-0, UCC-1, UCC-2) are used in the direction of increasing frequency.

  Here, in the mobile communication system shown in FIG. 15, the number of downlink carrier elements (DCCN) is four, the number of uplink carrier elements (UCCN) is three, and the number of downlink carrier elements is This is a mobile communication system whose number is larger (larger) than the number of uplink carrier elements.

  In FIG. 15, by dividing the DL system band and the UL system band by the basic frequency (BF), the number of downlink carrier elements and the number of uplink carrier elements obtained (calculated) and the base station apparatus and the movement From the ratio, the station apparatus calculates the number of carrier elements (DCCNinDCCG) “1 (4/3 = 1.3, rounded down to the nearest decimal point)” included in one downlink carrier element group, and calculates the calculated value. Based on this, the downlink carrier elements are made to correspond to the uplink carrier elements in order from the lower frequency to the higher frequency (in the direction of increasing frequency and in the direction of increasing index). In addition, the remaining downlink carrier elements that cannot be divided are linked to the downlink carrier element adjacent to the lower frequency side or the carrier element group including the downlink carrier element adjacent to the lower frequency side. (Combined) and combined into one carrier element group.

  That is, the base station apparatus and the mobile station apparatus associate the downlink carrier element and the downlink carrier element group with the uplink carrier element as shown in FIG. 15 (DCC-0, UCC-0, DCC- 1 and UCC-1 and DCCG-0 and UCC-2).

  Further, in FIG. 15, the base station apparatus that obtains (calculates) the number of downlink carrier elements and the number of uplink carrier elements by dividing the DL system band and the UL system band by the basic frequency (BF). The mobile station apparatus may perform communication by associating the configured downlink carrier element and uplink carrier element with each other for each uplink carrier element. That is, in FIG. 15, the base station apparatus and the mobile station apparatus configure a downlink carrier element group DCCG-0 from DCC-0 and DCC-3, and DCCG-0 and UCC-0, DCC-1 and UCC- 1, DCC-2 and UCC-2 may be communicated with each other.

  FIG. 16 shows another example of a mobile communication system to which the third embodiment can be applied. In the mobile communication system shown in FIG. 16, the DL system band indicates a frequency band having a bandwidth of 60 MHz, the UL system band indicates a frequency band having a bandwidth of 70 MHz, and the basic frequency (BF) is A frequency band with a bandwidth of 20 MHz is shown. The mobile communication system shown in FIG. 16 is a mobile communication system in which the bandwidth of the UL system band is larger (having a wider bandwidth) than the bandwidth of the DL system band, and the DL system band and the UL system band are If each is divided by the basic frequency (BF), a surplus is generated in the UL system band (the UL system band cannot be divided by the basic frequency of 20 MHz), and uplink carrier elements less than the basic frequency (BF) are included. It is a mobile communication system.

  In FIG. 16, the base station apparatus and the mobile station apparatus divide a DL system band having a bandwidth of 60 MHz by a basic frequency (BF) having a bandwidth of 20 MHz to configure an uplink carrier element. As shown in FIG. 15, indexes (DCC-0, DCC-1, DCC-2) are used in the direction in which the frequency increases.

  Further, the base station apparatus and the mobile station apparatus divide the UL system band having a bandwidth of 70 MHz by the basic frequency (BF) having a bandwidth of 20 MHz, and then generate uplink carrier elements (UCC-0, UCC- 1, UCC-2, UCC-3). At this time, the base station apparatus and the mobile station apparatus are obtained by dividing the uplink carrier element of the remainder of the UL system band that cannot be divided by the basic frequency (BF) (in this example, 70 MHz is divided by 20 MHz). Uplink carrier elements having a bandwidth of 10 MHz) and other uplink carrier elements (in this example, three downlink carrier elements having a bandwidth of 20 MHz obtained by dividing 70 MHz by 20 MHz) ) After (after).

  That is, as shown in FIG. 16, the base station apparatus and the mobile station apparatus divide three uplink carrier elements having a bandwidth of 20 MHz obtained by dividing the UL system band by the fundamental frequency (BF), In the direction of increasing frequency, UCC-0, UCC-1, and UCC-2 are indexed. Subsequently, an uplink carrier element having a bandwidth of 10 MHz is indexed as UCC-3.

  Here, in the mobile communication system shown in FIG. 16, the number of downlink carrier elements (DCCN) is three, the number of uplink carrier elements (UCCN) is four, and the number of uplink carrier elements is This is a mobile communication system whose number is larger (larger) than the number of downlink carrier elements.

  In FIG. 16, by dividing the DL system band and the UL system band by the basic frequency (BF), the number of downlink carrier elements and the number of uplink carrier elements obtained (calculated) and the base station apparatus and the movement From the ratio, the station apparatus calculates the number of carrier elements (UCCNinUCCG) “1 (4/3 = 1.3, rounded down to the nearest decimal point) included in one uplink carrier element group, and sets the calculated value to Based on this, in order from the lowest frequency to the higher frequency (in the direction of increasing frequency and in the direction of increasing index), the uplink carrier elements are associated with the downlink carrier elements. Also, the remaining uplink carrier elements that cannot be divided are linked to an uplink carrier element adjacent to the lower frequency side or a carrier element group including an uplink carrier element adjacent to the lower frequency side. (Combined) and combined into one carrier element group.

  That is, the base station apparatus and the mobile station apparatus associate the downlink carrier element with the uplink carrier element and the uplink carrier element group as shown in FIG. 16 (DCC-0, UCC-0, DCC- 1 and UCC-1 and DCC-2 and UCCG-0) to communicate with each other.

  Further, in FIG. 16, the DL station band and the UL system band are divided by the basic frequency (BF), thereby obtaining (calculating) the number of downlink carrier elements and the number of uplink carrier elements. The mobile station apparatus may perform communication by associating the configured downlink carrier element and uplink carrier element with each other for each downlink carrier element. That is, in FIG. 16, the base station apparatus and the mobile station apparatus configure an uplink carrier element group UCCG-0 from UCC-0 and UCC-3, and DCC-0 and UCCG-0, DCC-1 and UCC- 1, DCC-2 and UCC-2 may be communicated with each other.

  Here, in the mobile communication system shown in FIG. 16, when the base station apparatus and the mobile station apparatus communicate, uplink carriers that do not satisfy the fundamental frequency included in the uplink carrier element group (UCCG-0). Mobile station apparatus that can use uplink information that can be transmitted using an element (here, UCC-3) and an uplink channel arranged in an uplink carrier element (UCC-4) that does not satisfy the fundamental frequency Will be described with reference to FIG.

  FIG. 17 is a diagram showing a mobile communication system similar to FIG. As described above, in the mobile communication system shown in FIG. 17, the base station apparatus and the mobile station apparatus configure a downlink carrier element and an uplink carrier element group from the DL system band and the UL system band. Communicate with each other. At this time, the base station apparatus and the mobile station apparatus can transmit an uplink carrier element (UCC-3) that does not satisfy the fundamental frequency (BF) included in the uplink carrier element group (UCCG-0). Communication can be performed by restricting information. FIG. 17 shows PUSCH (indicated by a left-upward oblique line) and PUSCH (indicated by a right-upward oblique line) used when the base station apparatus and the mobile station apparatus transmit uplink information. . In FIG. 17, UCCG-0 is described as being configured from UCC-2 and UCC-3. However, as described above, UCCG-0 may be configured from UCC-0 and UCC-3. good. In the following description, the operation when UCCG-0 is configured from UCC-2 and UCC-3 will be described as an example. However, when UCCG-0 is configured from UCC-0 and UCC-3, UCC- 2 is replaced with UCC-0, and DCC-2 corresponding to UCC-2 is replaced with DCC-0 corresponding to UCC-0.

  As shown by the dotted line in FIG. 17, the base station apparatus and the mobile station apparatus have an uplink carrier element (UCC-3) that does not satisfy the basic frequency (BF) included in the uplink carrier element group (UCCG-0). The communication is performed by restricting information that can be transmitted on an uplink channel (for example, PUSCH, PUCCH, PRACH, etc.) arranged in (). For example, the mobile station device restricts information that can be transmitted on the PUCCH arranged in the uplink carrier element (UCC-3) that does not satisfy the fundamental frequency, and performs ACK / NACK for the dynamically scheduled PDSCH. Do not send.

  That is, the mobile station apparatus can transmit and transmit ACK / NACK for dynamically scheduled PDSCH only on the PUCCH of the uplink carrier element (UCC-2) that does not limit the information that can be transmitted. In the PUCCH of the uplink carrier element (UCC-3) that restricts information, other information (for example, ACK / NACK for PDSCH scheduled semi-persistent (quasi-persistent), channel state information (CQI) , PMI, RI) or scheduling request (SR).

  Accordingly, in the mobile communication system shown in FIG. 17, for example, the LTE (release 8) terminal uses the PUCCH of the uplink carrier element (UCC-2) corresponding to the downlink carrier element (DCC-2). ACK / NACK for dynamically scheduled PDSCH, ACK / NACK for semi-persistent (semi-persistent) scheduled PDSCH, channel state information (CQI, PMI, RI), scheduling A request (SR) or the like is transmitted to the base station apparatus.

  On the other hand, the LTE-A (Release 10) terminal transmits the PUCCH of the uplink carrier element (carrier element whose transmission information is not limited, UCC-2) included in the uplink carrier element group (UCCG-0). The ACK / NACK for the dynamically scheduled PDSCH is transmitted to the base station apparatus. At this time, the LTE-A (Release 10) terminal performs dynamic (motion) by combining the LTE (Release 8) terminal with the downlink carrier element (DCC-2) and the uplink carrier element (UCC-2). ACK / NACK for dynamically scheduled PDSCH using the same framework (mechanism) and the same framework (mechanism) used for transmitting ACK / NACK for scheduled PDSCH It can be transmitted to the station device.

  Further, the LTE-A (Release 10) terminal transmits an uplink carrier element (a carrier element in which information that can be transmitted is limited, for example, UCC- 3) Use PUCCH of 3) to base information such as ACK / NACK for semi-persistent (semi-persistent) scheduled PDSCH, channel state information (CQI, PMI, RI), scheduling request (SR), etc. Send to station device.

  In this way, the base station apparatus and the mobile station apparatus limit information transmitted for different uses (purposes and intentions) in uplink carrier elements that do not satisfy the fundamental frequency included in the uplink carrier element group. By doing so, a mobile station apparatus having different capabilities transmits information transmitted for a certain use (purpose, intention) within the same carrier element (for example, UCC-2), and a similar framework (mechanism). Can be transmitted between different carrier elements (for example, UCC-2, UCC-3) and transmitted with different capabilities. It becomes possible to coexist the mobile station apparatus with the same mobile communication system with higher affinity.

  In the mobile communication system shown in FIG. 17, an uplink channel arranged in an uplink carrier element (UCC-3) that does not satisfy the fundamental frequency included in the uplink carrier element group (UCCG-0) is used. The mobile station devices that can be used may be limited.

  That is, in the mobile communication system of FIG. 17, a mobile station apparatus that can use an uplink channel (for example, PUSCH, PUCCH, PRACH, etc.) arranged in an uplink carrier element (UCC-3) that does not satisfy the fundamental frequency. For example, it can be limited to only LTE-A (release 10) terminals.

  As a result, the LTE (release 8) terminal performs communication using only a limited combination of downlink carrier elements and uplink carrier elements (for example, a combination of DCC-2 and UCC-2). (That is, there is no LTE (release 8) terminal that communicates with DCC-2 and UCC-3 in correspondence), and it becomes possible to preferentially assign an LTE-A (release 10) terminal to UCC-3. Thus, mobile station devices having different capabilities can coexist more efficiently in the same mobile communication system.

  As described above, in the third embodiment, the base station apparatus and the mobile station apparatus use a downlink carrier element and an uplink carrier element in combination to operate as a wideband system band. When communicating, the relationship between the DL system band and the UL system band (which bandwidth is wider), or the DL system band and the UL system band included carrier elements less than the basic frequency (BF) In some cases, depending on the situation, downlink carrier elements and / or carrier element groups and uplink carrier elements and / or carrier element groups are configured, and communication is performed by making these correspond to each other. Easy to use downlink carrier elements and / or carry from link system band and uplink system band Configure the carrier component and / or carrier component group of element groups and uplink, by using them, it is possible to realize an efficient communication (transmission and reception of information).

  Further, the base station apparatus transmits uplink information (for example, HARQ ACK / NACK for downlink user data) corresponding to information (for example, downlink user data) transmitted in the downlink, to which carrier element in the uplink and It is not necessary to transmit a control signal (control information) indicating whether to transmit using a carrier element group, and communication (information transmission / reception) using radio resources efficiently can be performed.

(Fourth embodiment)
From the DL system band and UL system band described above, a downlink carrier element and / or carrier element group and an uplink carrier element and / or carrier element group are configured by a fundamental frequency (BF), An expression for calculating the state of communication in correspondence with each other is expressed as follows, for example.

Hereinafter, the downlink system band (DL system band) is DSB: Downlink System Band,
Uplink system band (UL system band) is USB: Uplink System Band,
The basic frequency is BF: Base Frequency,
The downlink carrier element is DCC: Downlink Component Carrier,
The uplink carrier element is UCC: Uplink Component Carrier,
The number of downlink carrier elements is DCCN: Downlink Component Carrier Number,
The number of uplink carrier elements is UCCN: Uplink Component Carrier Number,
The number of downlink carrier elements included in one downlink carrier element group is DCCNinDCCG: Downlink Component Carrier Number in Downlink Component Carrier Group,
The number of uplink carrier elements included in one uplink carrier element group is defined as UCCNinUCCG: Uplink Component Carrier Number in Uplink Component Carrier Group.
Let “i” be an index of a downlink carrier element (in the following formula, i is indexed from “0”),
“J” is an index of an uplink carrier element (in the following expression, j is indexed from “0”).

  As described above, the base station apparatus and the mobile station apparatus divide the DL system band by the basic frequency (BF) to form a plurality of downlink carrier elements, and the UL system band by the basic frequency (BF). When a plurality of uplink carrier elements are divided and the number of downlink carrier elements and the number of uplink carrier elements are the same (equal), the downlink carrier element and the uplink carrier The elements communicate with each other.

That is, the following formula:
If DCCN = UCCN
DCC (i) = UCC (j)
It is represented by

  At this time, when the DL system band and the UL system band include a downlink carrier element and an uplink carrier element that are less than the fundamental frequency (BF), those carrier elements that are less than the fundamental frequency (BF). Are indexed before other carrier elements.

  Further, the base station apparatus and the mobile station apparatus divide the DL system band by the basic frequency (BF) to form a downlink carrier element, divide the UL system band by the basic frequency (BF), and In this case, if the number of downlink carrier elements is larger than the number of uplink carrier elements, the ratio of the number of downlink carrier elements to the number of uplink carrier elements The number of downlink carrier elements included in one carrier element group of the link is calculated, and communication is performed by associating the downlink carrier element group and the uplink carrier element with each other.

で表される。ここで、

は、小数点以下切り捨てを示している。 That is, the following formula:

It is represented by here,

Indicates truncation after the decimal point.

また、この際、ＤＬシステム帯域に、基本周波数（ＢＦ）に満たない下りリンクのキャリア要素が含まれる場合、基本周波数に満たない下りリンクのキャリア要素は、他の下りリンクのキャリア要素よりも後に（後ろに）インデックスされる。また、ＵＬシステム帯域に、基本周波数（ＢＦ）に満たない上りリンクのキャリア要素が含まれる場合、基本周波数に満たない上りリンクのキャリア要素は、他の上りリンクのキャリア要素よりも前に（先に）インデックスされる。 An expression for calculating the state at this time may be expressed by the following expression.

At this time, when the DL system band includes a downlink carrier element that does not satisfy the fundamental frequency (BF), the downlink carrier element that does not satisfy the fundamental frequency is later than the other downlink carrier elements. Indexed (backward). In addition, when the UL system band includes an uplink carrier element that does not satisfy the fundamental frequency (BF), the uplink carrier element that does not satisfy the fundamental frequency is preceded by other uplink carrier elements (first). Indexed).

  Further, the base station apparatus and the mobile station apparatus divide the DL system band by the basic frequency (BF) to form a downlink carrier element, divide the UL system band by the basic frequency (BF), and In this case, when the number of uplink carrier elements is larger than the number of downlink carrier elements, the ratio of the number of uplink carrier elements to the number of downlink carrier elements The number of uplink carrier elements included in one carrier element group of the link is calculated, and communication is performed with the uplink carrier element group and the downlink carrier element corresponding to each other.

で表される。ここで、

は、小数点以下切り捨てを示している。 That is,

It is represented by here,

Indicates truncation after the decimal point.

また、この際、ＤＬシステム帯域に、基本周波数（ＢＦ）に満たない下りリンクのキャリア要素が含まれる場合、基本周波数に満たない下りリンクのキャリア要素は、他の下りリンクのキャリア要素よりも前に（先に）インデックスされる。また、ＵＬシステム帯域に、基本周波数（ＢＦ）に満たない上りリンクのキャリア要素が含まれる場合、基本周波数に満たない上りリンクのキャリア要素は、他の上りリンクのキャリア要素よりも後に（後ろに）インデックスされる。 An expression for calculating the state at this time may be expressed by the following expression.

At this time, if the DL system band includes a downlink carrier element that does not satisfy the fundamental frequency (BF), the downlink carrier element that does not satisfy the fundamental frequency is preceded by another downlink carrier element. Is indexed (first). In addition, when the UL system band includes an uplink carrier element that does not satisfy the basic frequency (BF), the uplink carrier element that does not satisfy the basic frequency is behind (behind) the other uplink carrier elements. ) Indexed.

  As described above, in the fourth embodiment, the base station apparatus and the mobile station apparatus use a downlink carrier element and an uplink carrier element in combination to operate as a wideband system band. When communicating, the relationship between the DL system band and the UL system band (which bandwidth is wider), or the DL system band and the UL system band included carrier elements less than the basic frequency (BF) In some cases, depending on the situation, downlink carrier elements and / or carrier element groups and uplink carrier elements and / or carrier element groups are configured, and communication is performed by making these correspond to each other. Easy to use downlink carrier elements and / or carry from link system band and uplink system band Configure the carrier component and / or carrier component group of element groups and uplink, by using them, it is possible to realize an efficient communication (transmission and reception of information).

  Further, the base station apparatus transmits uplink information (for example, HARQ ACK / NACK for downlink user data) corresponding to information (for example, downlink user data) transmitted in the downlink, to which carrier element in the uplink and It is not necessary to transmit a control signal (control information) indicating whether to transmit using a carrier element group, and communication (information transmission / reception) using radio resources efficiently can be performed.

  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 in a computer-readable recording medium, and the program recorded in this recording medium is recorded. The base station apparatus and the mobile station apparatus may be controlled by being read and executed by a computer system. The “computer system” here 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.

It is a figure which shows notionally one structural example of the physical channel in embodiment of this invention. It is a block diagram which shows schematic structure of the base station apparatus 100 which concerns on embodiment of this invention. It is a block diagram which shows schematic structure of the mobile station apparatus 200 which concerns on embodiment of this invention. The frequency band of the downlink for describing 1st Embodiment, and the frequency band of an uplink are shown. 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 2nd Embodiment. It is a figure which shows another example of the mobile communication system which can apply 2nd Embodiment. It is a figure which shows another example of the mobile communication system which can apply 2nd Embodiment. It is a figure which shows the mobile communication system similar to FIG. It is a figure which shows the example of the mobile communication system which can apply 3rd Embodiment. The other example of the mobile communication system which can apply 3rd Embodiment is shown. The other example of the mobile communication system which can apply 3rd Embodiment is shown. The other example of the mobile communication system which can apply 3rd Embodiment is shown. The other example of the mobile communication system which can apply 3rd Embodiment is shown. The other example of the mobile communication system which can apply 3rd Embodiment is shown. The other example of the mobile communication system which can apply 3rd Embodiment is shown. It is a figure which shows the same mobile communication system as FIG.

Explanation of symbols

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 (16)

A mobile communication system comprising a base station device and a mobile station device,
The downlink system band is divided by the fundamental frequency to form a plurality of downlink carrier elements,
Dividing the uplink system band by the fundamental frequency to configure multiple uplink carrier elements,
The base station apparatus and the mobile station apparatus communicate with each other by making the downlink carrier element and the uplink carrier element correspond to each other. A mobile communication system comprising a base station device and a mobile station device,
The downlink system band is divided by the fundamental frequency to form a plurality of downlink carrier elements,
Dividing the uplink system band by the fundamental frequency to configure multiple uplink carrier elements,
Configuring a downlink carrier element group including a plurality of downlink carrier elements based on a ratio of the number of downlink carrier elements and the number of uplink carrier elements;
The base station apparatus and the mobile station apparatus communicate with each other by making the downlink carrier element group and the uplink carrier element correspond to each other. A mobile communication system comprising a base station device and a mobile station device,
The downlink system band is divided by the fundamental frequency to form a plurality of downlink carrier elements,
Dividing the uplink system band by the fundamental frequency to configure multiple uplink carrier elements,
Based on the ratio between the number of uplink carrier elements and the number of downlink carrier elements, configure an uplink carrier element group including a plurality of uplink carrier elements;
The base station apparatus and the mobile station apparatus perform communication by making the downlink carrier element and the uplink carrier element group correspond to each other.   The mobile base station apparatus according to any one of claims 1 to 3, wherein the base station apparatus sets the fundamental frequency in the mobile station apparatus in a cell-specific manner using a broadcast channel.   The said base station apparatus sets the said fundamental frequency to the said mobile station apparatus specific to a mobile station apparatus using a radio | wireless resource control signal, The movement in any one of Claims 1-3 characterized by the above-mentioned. Communications system. The number of downlink carrier elements having a bandwidth corresponding to the fundamental frequency is equal to the number of uplink carrier elements having a bandwidth corresponding to the fundamental frequency;
There is a downlink carrier element having a bandwidth less than the fundamental frequency in the downlink system band,
When there is an uplink carrier element having a bandwidth less than the fundamental frequency in the uplink system band,
The base station device and the mobile station device communicate with each other by associating a downlink carrier element having a bandwidth less than the fundamental frequency with an uplink carrier element having a bandwidth less than the fundamental frequency. The mobile communication system according to any one of claims 1 to 3, wherein: The number of downlink carrier elements having a bandwidth corresponding to the fundamental frequency is greater than the number of uplink carrier elements having a bandwidth corresponding to the fundamental frequency;
When there is an uplink carrier element having a bandwidth less than the fundamental frequency in the uplink system band,
The base station apparatus and the mobile station apparatus communicate with each other by associating the downlink carrier element with an uplink carrier element having a bandwidth less than the fundamental frequency. The mobile communication system according to any one of claims 1 to 3. The number of downlink carrier elements having a bandwidth corresponding to the fundamental frequency is greater than the number of uplink carrier elements having a bandwidth corresponding to the fundamental frequency;
When there is a downlink carrier element having a bandwidth less than the fundamental frequency in the downlink system band,
A downlink carrier element having a bandwidth less than the fundamental frequency is connected to an adjacent downlink carrier element to form a downlink carrier element group;
The base station apparatus and the mobile station apparatus communicate with each other by making the configured downlink carrier element group and the uplink carrier element correspond to each other. A mobile communication system according to any one of the above. The number of downlink carrier elements having a bandwidth corresponding to the fundamental frequency is greater than the number of uplink carrier elements having a bandwidth corresponding to the fundamental frequency;
When a downlink carrier element having a bandwidth less than the fundamental frequency is included in the downlink system band,
Concatenating downlink carrier elements that do not satisfy the fundamental frequency with downlink carrier element groups including adjacent downlink carrier elements to form a downlink carrier element group,
The base station apparatus and the mobile station apparatus communicate with each other by making the configured downlink carrier element group and the uplink carrier element correspond to each other. A mobile communication system according to any one of the above. The number of uplink carrier elements having a bandwidth corresponding to the fundamental frequency is greater than the number of downlink carrier elements having a bandwidth corresponding to the fundamental frequency;
When a downlink carrier element having a bandwidth less than the fundamental frequency is included in the downlink system band,
The base station apparatus and the mobile station apparatus communicate with each other by associating the uplink carrier element with a downlink carrier element having a bandwidth less than the fundamental frequency. The mobile communication system according to any one of claims 1 to 3. The number of uplink carrier elements having a bandwidth corresponding to the fundamental frequency is greater than the number of downlink carrier elements having a bandwidth corresponding to the fundamental frequency;
When the uplink system band includes an uplink carrier element having a bandwidth less than the fundamental frequency,
An uplink carrier element group having a bandwidth less than the fundamental frequency is connected to an adjacent uplink carrier element to form an uplink carrier element group,
The base station apparatus and the mobile station apparatus communicate with each other by making the configured uplink carrier element group and the downlink carrier element correspond to each other. A mobile communication system according to claim 1. The number of uplink carrier elements having a bandwidth corresponding to the fundamental frequency is greater than the number of downlink carrier elements having a bandwidth corresponding to the fundamental frequency;
When the uplink system band includes an uplink carrier element having a bandwidth less than the fundamental frequency,
An uplink carrier element group is formed by linking an uplink carrier element having a bandwidth less than the fundamental frequency with an uplink carrier element group including an adjacent uplink carrier element;
The base station apparatus and the mobile station apparatus communicate with each other by associating the downlink carrier element with the configured uplink carrier element group. A mobile communication system according to any one of the above.   The mobile communication system according to claim 10, wherein uplink information that can be transmitted by an uplink carrier element included in the uplink carrier element group is limited.   The mobile communication system according to claim 10, wherein mobile station apparatuses that can use an uplink channel arranged in an uplink carrier element included in the uplink carrier element group are limited. A base station apparatus applied to a mobile communication system,
Transmitting a fundamental frequency for configuring a downlink carrier element and an uplink carrier element from the downlink system band and the uplink system band to the mobile station apparatus;
A downlink system band is divided by the fundamental frequency to form a plurality of downlink carrier elements,
Dividing an uplink system band by the fundamental frequency to configure a plurality of uplink carrier elements;
A base station apparatus that communicates with a mobile station apparatus by making the downlink carrier element and the uplink carrier element correspond to each other. A mobile station apparatus applied to a mobile communication system,
Receiving, from the base station apparatus, a fundamental frequency for configuring a downlink carrier element and an uplink carrier element from the downlink system band and the uplink system band;
A downlink system band is divided by the fundamental frequency to form a plurality of downlink carrier elements,
Dividing an uplink system band by the fundamental frequency to configure a plurality of uplink carrier elements;
A mobile station apparatus that communicates with a base station apparatus by making the downlink carrier element and the uplink carrier element correspond to each other.

Images