JP2010212892A - Radio communication system, mobile station device, base station device, communication control method, and communication control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio communication system etc., capable of performing sure scheduling, adaptive modulation, and encoding over all the element frequency bands. <P>SOLUTION: An uplink control data generating section generates a channel quality index, indicative of reception quality of downlink element frequency bands for each downlink element frequency band. A channel quality index association switching section determines the channel quality index association information, representing association of the respective uplink element frequency bands with respective channel quality indices of downlink element frequency bands that the uplink control data generating section generates as channel equality index association information that differs in association, prior to and after the lapse of a predetermined association switching period. A transmission processing section arranges the respective channel quality indices of the downlink element frequency bands that the uplink control data generating section generates in uplink element frequency bands associated with the channel quality index association information that the channel quality index association switching section has determined, and transmits them to a base station device. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a radio communication system, a mobile station apparatus, a base station apparatus, a communication control method, and a communication control program.

  As a third generation (3G) radio access system for cellular mobile communication, W-CDMA (Wideband Code Division Multiple Access) system has been standardized in 3GPP (3rd Generation Partnership Project), A cellular mobile communication service based on this method has been started. In 3GPP, 3G evolution (Evolved Universal Terrestrial Radio Access; hereinafter referred to as “EUTRA”) and 3G network evolution (Evolved Universal Terrestrial Access Network) are being studied.

  An OFDM (Orthogonal Frequency Division Multiplexing) scheme, which is multicarrier transmission, is applied in the downlink, which is a communication direction from a base station apparatus to a mobile station apparatus of EUTRA. In addition, a DFT (Discrete Fourier Transform) -Spread OFDM scheme, which is single carrier transmission, is applied in the uplink, which is a communication direction from a mobile station apparatus to a base station apparatus in EUTRA.

<Uplink channel configuration>
Hereinafter, a schematic configuration of an uplink radio frame in EUTRA will be described. FIG. 23 is a diagram illustrating a schematic configuration of an uplink radio frame from a mobile station apparatus to a base station apparatus according to the related art. In this figure, the horizontal axis represents the time domain, and the vertical axis represents the frequency domain.
The uplink radio frame is composed of an uplink resource block pair (time frequency band). This uplink resource block pair is a radio resource allocation unit for each mobile station apparatus, and consists of a frequency band and a time band having a predetermined width. One uplink resource block pair is composed of two uplink resource blocks that are continuous in the time domain. Moreover, in this figure, one uplink resource block is comprised from 12 uplink subcarriers in the frequency domain, and has 7 SC-FDMA symbols (Single Carrier-Frequency Division Multiple Access; single carrier in the time domain). Frequency division multiple access). The uplink system bandwidth is the uplink communication bandwidth of the base station apparatus.

  In FIG. 23, the time domain is composed of an uplink slot composed of 7 SC-FDMA symbols, an uplink subframe composed of 2 uplink slots, and 10 uplink subframes. There is an uplink radio frame to be played. In the time direction, one uplink subframe is a time frame that is a unit in the time direction of radio resource allocation to each uplink mobile station apparatus. A unit composed of one uplink subcarrier and one SC-FDMA symbol is called an uplink resource element. In the uplink radio frame, a plurality of uplink resource blocks are arranged according to the uplink system bandwidth.

In each uplink subframe, at least an uplink shared data channel used for transmitting information data and an uplink control channel used for transmitting control data are arranged. In FIG. 23, the white area indicates an uplink shared data channel, and the hatched area indicates an uplink control channel. In this figure, the area hatched with a vertical line indicates an uplink pilot channel.
The uplink control channel is a downlink channel quality indicator CQI (Channel Quality Indicator), a scheduling request SR (Scheduling Request), or a reception response ACK / NACK (Acknowledgement / Negative-Acknowledgement) for the downlink shared data channel. The control data signal consisting of is arranged and transmitted in one uplink resource block pair. Details of the downlink channel quality indicator CQI and the scheduling request SR will be described later.
Further, the uplink resource block pair used for this uplink control channel is an uplink resource block pair at both ends of the bandwidth of the uplink system bandwidth, and is composed of uplink resource blocks that are symmetrical in the frequency domain. For example, in FIG. 23, one uplink resource block pair is configured by combining the uplink resource blocks X11 and X12.

<Channel quality indicator CQI, scheduling request SR>
The EUTRA channel quality indicator CQI will be described below.
The channel quality indicator CQI is a measurement result of the reception quality measured by the mobile station apparatus using the downlink reference signal of the downlink pilot channel received from the base station apparatus, and reception of the downlink system band for each mobile station apparatus. It is information indicating quality. The mobile station apparatus periodically transmits a channel quality indicator CQI to the base station apparatus using an uplink control channel assigned in advance by the base station apparatus. The base station apparatus allocates periodic radio resources (hereinafter referred to as CQI allocation control channel) for the mobile station apparatus to allocate the channel quality indicator CQI when communication connection with the mobile station apparatus is started.

  The base station apparatus uses the channel quality indicator CQI received from the mobile station apparatus to allocate radio resource allocation (frequency scheduling) of the downlink shared data channel to the mobile station apparatus, and to determine the modulation scheme and coding rate of the downlink shared data channel. Select (adaptive modulation and coding). For example, the base station apparatus allocates a downlink shared data channel to a downlink resource block having a good channel quality index CQI for the mobile station apparatus. Further, the base station apparatus sets the modulation method of the downlink shared data channel according to the channel quality indicator CQI as QPSK (Quadrature Phase Shift Keying), 16QAM (16 Quadrature Amplitude Modulation). , 64QAM (64 Quadrature Amplitude Modulation).

The EUTRA scheduling request SR will be described below.
The scheduling request SR is information that the mobile station apparatus requests the base station apparatus to allocate radio resources for the uplink shared data channel. The mobile station apparatus transmits a scheduling request SR when information data to be transmitted accumulates in its own buffer and requests allocation of radio resources of the uplink shared data channel. The mobile station apparatus transmits a scheduling request SR to the base station apparatus using an uplink control channel previously assigned by the base station apparatus. The base station apparatus allocates periodic radio resources (hereinafter referred to as an SR-arrangeable control channel) for arranging a scheduling request SR when the mobile station apparatus starts communication connection with the mobile station apparatus.

Hereinafter, a method for assigning the CQI-arrangeable control channel and the SR-arrangeable control channel will be described.
FIG. 24 is a schematic diagram illustrating an example of assignment in the time domain of the CQI arrangement control channel and the SR arrangement control channel according to the related art. This figure is a diagram showing the time domain of the uplink subframe unit of FIG. 23, and the horizontal axis shows time.

In FIG. 24, rectangles with symbols CQI and SR indicate a CQI arrangement control channel and an SR arrangement control channel, respectively.
In this figure, the base station apparatus allocates a CQI arrangement control channel to the mobile station apparatus every two uplink subframes (uplink subframes 1, 3, 5, 7,...). It shows that. Also, in this figure, the base station apparatus sets the SR arrangement control channel for the mobile station apparatus every four uplink subframes (uplink subframes 1, 5, 9, 13,...). Indicates that it has been assigned.

By the way, in a conventional wireless communication system, in order to prevent an increase in PAPR (Peak-to-Average Power Ratio) of transmission power of a mobile station apparatus, in the uplink, a single carrier (for example, (DFT-Spread OFDM system) (hereinafter referred to as single carrier attribute) is required. If the mobile station apparatus arranges and transmits two or more control data signals (for example, channel quality indicator CQI and scheduling request SR) in the uplink control channel of one uplink subframe, the transmission signal is It becomes a multicarrier signal and PAPR increases.
Therefore, when the mobile station apparatus transmits the scheduling request SR, if the channel quality indicator CQI is also to be arranged in the uplink control channel of the uplink subframe in which the scheduling request SR is arranged, the mobile station apparatus has a high importance scheduling request. Only the SR is arranged and transmitted in the uplink control channel of this uplink subframe. That is, at this time, the mobile station apparatus does not arrange the channel quality indicator CQI in the uplink subframe in which the scheduling request SR is arranged.

  For example, in FIG. 24, an uplink subframe 5 surrounded by a chain line includes both a CQI arrangement control channel and an SR arrangement control channel (the same applies to uplink subframes 1, 9, 13, and 17). is there). When the mobile station apparatus arranges the scheduling request SR in the uplink control channel of the uplink subframe 5, the mobile station apparatus does not arrange the channel quality indicator CQI in the uplink control channel of the uplink subframe 5. Conversely, when the mobile station apparatus does not place the scheduling request SR in the uplink control channel of the uplink subframe 5, that is, when the information data to be transmitted to the base station apparatus is not accumulated, the uplink subframe 5 The channel quality indicator CQI is arranged in the uplink control channel.

<Element frequency band>
On the other hand, in 3GPP, the fourth generation (4th Generation; hereinafter referred to as “4G”) radio access scheme (Advanced EUTRA; hereinafter referred to as “A-EUTRA”) and 4G network (Advanced EUTRAN) of cellular mobile communication. ) Has been started.
In A-EUTRA, it is considered to support a wider frequency band than EUTRA and to ensure compatibility with EUTRA. For this reason, in A-EUTRA, the base station apparatus uses the frequency band of EUTRA as a unit (element frequency band) and performs communication using a system band composed of a plurality of element frequency bands (frequency band aggregation: Spectrum). Aggregation or carrier aggregation (sometimes referred to as “Carrier aggregation”) has been studied (Note that the element frequency band may also be referred to as “Carrier Component” or “Component Carrier: Component Carrier”). (Non-Patent Document 1). In this technology, a base station apparatus communicates with a mobile station apparatus compatible with EUTRA using any one element frequency band, and uses a mobile station apparatus compatible with A-EUTRA with one or more element frequency bands. To communicate.

3GPP TSG RAN1 # 54bis, Prague, Czech Public, 29-3 September, 2008, R1-083777 “Updated Views on Support Bandwidth in LTE-Adv”

By the way, also in A-EUTRA, as in the case of EUTRA, the base station apparatus receives the downlink channel quality indicator CQI from the mobile station apparatus, and performs frequency scheduling and adaptive modulation based on the received information. And encoding. Also, from the viewpoint of ensuring compatibility so that the base station apparatus can communicate with both the EUTRA-compatible mobile station apparatus and the A-EUTRA-compatible mobile station apparatus, each of a plurality of element frequency bands constituting the system band of A-EUTRA The configuration of the radio frame is preferably the same as the configuration of the radio frame in the EUTRA system band.
However, when the configuration of the radio frame of the EUTRA system band is applied as it is to each of the element frequency bands in A-EUTRA, the mobile station apparatus has a downlink element when the scheduling request SR is continuously arranged. Of the downlink channel quality indicators CQI indicating the reception quality of each frequency band, the channel quality indicators CQI of the same downlink element frequency band may not be transmitted continuously. In this case, the base station apparatus cannot obtain the channel quality indicator CQI of the same downlink element frequency band over a long period of time, and reliable frequency scheduling, adaptive modulation, and encoding are performed for the downlink element frequency band. There is a disadvantage that can not be done.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a radio communication system, a mobile station apparatus, a reliable frequency scheduling, and adaptive modulation and coding for all element frequency bands. A base station apparatus, a communication control method, and a communication control program are provided.

(1) The present invention has been made to solve the above problems, and the present invention uses a plurality of downlink element frequency bands, which are predetermined frequency bandwidth bands, to transmit from a base station apparatus. Radio communication comprising: a mobile station apparatus that receives a signal; and a base station apparatus that receives a transmission signal from the mobile station apparatus using a plurality of uplink element frequency bands, which are bands of a predetermined frequency bandwidth In the system, the mobile station device includes, for each downlink element frequency band, an uplink control data generation unit that generates a channel quality indicator indicating reception quality of the downlink element frequency band, and the uplink element frequency A channel quality indicator that indicates a correspondence between each band and a channel quality indicator for each downlink component frequency band generated by the uplink control data generator The channel quality indicator association switching unit that determines the association information as channel quality indicator association information having different associations before and after the elapse of a predetermined association switching cycle, and the downlink generated by the uplink control data generation unit Transmission of channel quality indicators for each link element frequency band arranged in the uplink element frequency band associated with the channel quality indicator association information determined by the channel quality indicator association switching unit and transmitted to the base station apparatus And a processing unit.
According to the above configuration, in the wireless communication system, the mobile station apparatus determines the channel quality indicator association information as channel quality indicator association information having different associations before and after a predetermined association switching cycle. Therefore, the mobile station apparatus can arrange and transmit a channel quality indicator indicating reception quality of different downlink element frequency bands before and after the lapse of the association switching period in the uplink element frequency band. As a result, even when the channel quality indicator cannot be transmitted in one uplink element frequency band, the reception quality of the downlink element frequency bands that are different before and after the lapse of the switching period corresponding to the other uplink element frequency bands can be reduced. The base station apparatus can perform reliable frequency scheduling, adaptive modulation, and coding for all element frequency bands based on channel quality indices for all downlink element frequency bands. Can be made.

  (2) Further, according to the present invention, in the above wireless communication system, the base station apparatus generates an uplink control channel for generating channel quality indicator arrangement association switching information indicating whether or not to switch the channel quality indicator association An allocation determining unit, and a transmission processing unit that transmits the channel quality indicator allocation association switching information generated by the uplink control channel allocation determining unit to the mobile station apparatus, the channel quality indicator association switching unit, When the channel quality indicator arrangement association switching information received from the base station apparatus indicates switching of the channel quality indicator association, the association is determined to be different channel quality indicator association information.

(3) Further, according to the present invention, in the above wireless communication system, the channel quality indicator association switching unit switches the channel quality indicator association based on channel quality indicator arrangement association switching information received from the base station apparatus. In the case of indicating that there is not, the association is determined to be the same channel quality index association information before and after the elapse of a predetermined association switching cycle.
According to the above configuration, the radio communication system can control whether or not the base station device switches the channel quality indicator association, and is used for communication between the base station device and the mobile station device, for example. When the number of downlink component frequency bands is one, it is possible to control so as not to switch the CQI arrangement association. Thereby, the wireless communication system can prevent the channel quality indicator of the downlink component frequency band not used for communication from being transmitted by switching the channel quality indicator association, and the downlink component used for communication It is possible to prevent the transmission efficiency of the channel quality indicator in the frequency band from being lowered.

(4) Moreover, the present invention is the above wireless communication system, wherein the base station apparatus generates an uplink control channel arrangement determining unit that generates channel quality indicator arrangement association switching information indicating the association switching period; A transmission processing unit that transmits the channel quality indicator allocation association switching information generated by the uplink control channel allocation determining unit to the mobile station device, the channel quality indicator association switching unit receiving from the base station device The channel quality indicator association information is determined to be different before and after the association switching cycle indicated by the channel quality indicator arrangement association switching information.
According to the above configuration, since the base station apparatus generates channel quality indicator arrangement association switching information indicating the association switching period, the wireless communication system calculates the association switching period in the mobile station apparatus. Therefore, the channel quality indicator association can be switched without fail, and the processing performed by the mobile station apparatus can be reduced.

  (5) Moreover, the present invention is the above wireless communication system, wherein the channel quality indicator association switching unit is configured such that the association switching cycle is an integral multiple of a radio resource allocation cycle in which the channel quality indicator can be arranged. The channel quality indicator association information is determined as a cycle.

(6) Further, according to the present invention, in the radio communication system described above, the uplink control data generation unit generates a scheduling request for requesting the base station apparatus to allocate radio resources to arrange and transmit information data. The transmission processing unit generates the uplink element frequency band and time band to which the radio resource capable of arranging the channel quality indicator is allocated, and the uplink to which the radio resource capable of arranging the scheduling request is allocated. When the element frequency band and the time band are the same uplink element frequency band and time band, the channel quality indicator is not arranged in radio resources of the uplink element frequency band and time band.
According to the above configuration, the radio communication system includes the uplink element frequency band and time band to which the mobile station apparatus is allocated radio resources to which the channel quality indicator can be allocated, and radio resources in which the scheduling request can be allocated. When the uplink element frequency band and the time band to which is allocated are the same uplink element frequency band and the time band, the channel quality indicator is arranged in the radio resource of the uplink element frequency band and the time band. Therefore, the scheduling request can be transmitted promptly and reliably, and information data loss due to information data overflow in the mobile station apparatus can be prevented.

(7) Further, in the radio communication system according to the present invention, the uplink control data generation unit generates a scheduling request for requesting the base station apparatus to allocate radio resources to arrange and transmit information data. And when the uplink control data generation unit generates the scheduling request, the transmission processing unit of the mobile station apparatus generates the uplink element frequency band to which the radio resource to which the channel quality indicator can be allocated is assigned. When the time band and the uplink element frequency band and time band to which the radio resource capable of arranging the scheduling request is allocated are the same uplink element frequency band and time band, the uplink element frequency band and time The uplink control data generation unit generates Place a scheduling request, characterized in that it does not place the channel quality indicator.
According to the above configuration, when the mobile station apparatus generates the scheduling request, the radio communication system includes the uplink element frequency band and time band to which radio resources capable of arranging the channel quality indicator are allocated, and When the uplink element frequency band and the time band to which the radio resource capable of arranging the scheduling request is allocated are the same uplink element frequency band and the time band, the uplink resource frequency band and the time band are assigned to the radio resource in the uplink element frequency band and the time band. Since the generated scheduling request is arranged and the channel quality indicator is not arranged, the scheduling request can be transmitted quickly and reliably, and information data loss due to information data overflow in the mobile station apparatus can be prevented. Can do.

  (8) Further, according to the present invention, in the above wireless communication system, the channel quality indicator association switching unit sets the association switching cycle as a cycle that is an integral multiple of a radio resource allocation cycle in which a scheduling request can be arranged. The channel quality indicator association information is determined.

  (9) Further, in the wireless communication system according to the present invention, the channel quality indicator association switching unit includes channel quality indicators for the nth uplink element frequency band and the mth downlink element frequency band; The channel quality indicator association information indicating the association of the nth uplink element frequency band n and the m + 1th or m−1th downlink element frequency band after the association switching period has elapsed. The channel quality indicator association information indicating the association with the channel quality indicator is determined.

  (10) Further, the present invention receives a transmission signal from a base station apparatus using a plurality of downlink element frequency bands that are predetermined frequency bandwidth bands, and uses a predetermined frequency bandwidth band. In a mobile station apparatus that transmits a transmission signal to a base station apparatus using a plurality of uplink element frequency bands, a channel quality indicator indicating reception quality of the downlink element frequency band is generated for each downlink element frequency band An uplink control data generation unit, channel quality indicator association information indicating an association between each uplink element frequency band and a channel quality indicator of each downlink element frequency band generated by the uplink control data generation unit, The channel quality index association information is determined as channel quality index association information having different associations before and after a predetermined association switching cycle. The channel quality indicator association switching unit and the channel quality indicator for each downlink element frequency band generated by the uplink control data generating unit are associated with the channel quality indicator association information determined by the channel quality indicator association switching unit. And a transmission processing unit arranged in the uplink component frequency band to be transmitted and transmitting to the base station device.

  (11) Further, in the mobile station apparatus according to the present invention, the mobile station apparatus transmits channel quality indicator arrangement association switching information indicating whether to switch the channel quality indicator association from the base station device. The channel quality indicator association switching unit receives the channel quality indicator allocation association switching information indicating that the channel quality indicator association is different when the channel quality indicator allocation association switching information indicates that the channel quality indicator association is to be switched. It is characterized by determining the index association information.

  (12) In the mobile station apparatus according to the present invention, the channel quality indicator association switching unit may switch the channel quality indicator association based on the channel quality indicator arrangement association switching information received from the base station device. In the case of indicating that there is not, the association is determined to be the same channel quality index association information before and after the elapse of a predetermined association switching cycle.

  (13) Further, in the mobile station apparatus according to the present invention, the mobile station apparatus receives channel quality indicator arrangement association switching information indicating the association switching period from the base station apparatus, and the channel quality The index association switching unit determines the channel quality index associating information having different associations before and after the association switching cycle indicated by the channel quality indicator arrangement association switching information received from the base station apparatus. To do.

  (14) In the mobile station apparatus according to the present invention, the channel quality indicator association switching unit may set the association switching cycle to an integral multiple of a radio resource allocation cycle in which the channel quality indicator can be arranged. The channel quality indicator association information is determined as a cycle.

  (15) Further, in the mobile station apparatus according to the present invention, the uplink control data generation unit generates a scheduling request for requesting the base station apparatus to allocate radio resources to arrange and transmit information data. The transmission processing unit generates the uplink element frequency band and time band to which the radio resource capable of arranging the channel quality indicator is allocated, and the uplink to which the radio resource capable of arranging the scheduling request is allocated. When the element frequency band and the time band are the same uplink element frequency band and time band, the channel quality indicator is not arranged in radio resources of the uplink element frequency band and time band.

  (16) Further, in the mobile station apparatus according to the present invention, the uplink control data generation unit generates a scheduling request for requesting the base station apparatus to allocate radio resources to arrange and transmit information data. And when the uplink control data generation unit generates the scheduling request, the transmission processing unit of the mobile station apparatus generates the uplink element frequency band to which the radio resource to which the channel quality indicator can be allocated is assigned. When the time band and the uplink element frequency band and time band to which the radio resource capable of arranging the scheduling request is allocated are the same uplink element frequency band and time band, the uplink element frequency band and time A schedule generated by the uplink control data generation unit for radio resources in a band Place-ring request, characterized in that it does not place the channel quality indicator.

  (17) Further, in the mobile station apparatus according to the present invention, the channel quality indicator association switching unit may set the association switching cycle as a cycle that is an integral multiple of a radio resource allocation cycle in which a scheduling request can be arranged. The channel quality indicator association information is determined.

  (18) Further, in the mobile station apparatus according to the present invention, the channel quality indicator association switching unit includes channel quality indicators for the nth uplink element frequency band and the mth downlink element frequency band, The channel quality indicator association information indicating the association of the nth uplink element frequency band n and the m + 1th or m−1th downlink element frequency band after the association switching period has elapsed. The channel quality indicator association information indicating the association with the channel quality indicator is determined.

  (19) Further, the present invention transmits a transmission signal to a mobile station apparatus using a plurality of downlink element frequency bands, which are predetermined frequency bandwidth bands, and has a predetermined frequency bandwidth band. In a base station apparatus that receives a transmission signal from the mobile station apparatus using a plurality of uplink element frequency bands, a channel quality indicator that indicates reception quality of each of the uplink element frequency bands and each of the downlink element frequency bands A base station apparatus comprising: an uplink control channel arrangement determining unit that generates channel quality indicator arrangement association switching information for controlling association and transmits the information to the mobile station apparatus.

  (20) Further, in the base station apparatus according to the present invention, the uplink control channel arrangement determining unit generates channel quality indicator arrangement association switching information indicating whether or not to switch the channel quality indicator association. And a transmission processing unit that transmits the channel quality indicator allocation association switching information generated by the uplink control channel allocation determining unit to the mobile station apparatus.

  (21) Further, in the base station apparatus according to the present invention, the uplink control channel arrangement determining unit determines that the channel quality indicator association is a channel quality indicator association having a different association before and after progress. A transmission processing unit configured to generate information indicating an additional switching period and transmit the channel quality indicator allocation association switching information generated by the uplink control channel allocation determining unit to the mobile station apparatus.

  (22) Further, the present invention receives a transmission signal from a base station apparatus using a plurality of downlink element frequency bands, which are predetermined frequency bandwidth bands, and uses a predetermined frequency bandwidth band. In a communication control method in a mobile station apparatus that transmits a transmission signal to a base station apparatus using a plurality of uplink element frequency bands, the mobile station apparatus performs the downlink element frequency band for each of the downlink element frequency bands. A first process of generating a channel quality indicator indicating reception quality, and a channel indicating correspondence between each of the uplink component frequency bands and a channel quality indicator of each of the downlink component frequency bands generated in the first step The quality indicator association information is determined as channel quality indicator association information having different associations before and after the predetermined association switching cycle. And the second process, the channel quality index of each downlink component frequency band generated in the first process is associated with the channel quality index association information determined in the second process And a third process of transmitting to the base station apparatus by arranging in an element frequency band.

  (23) Further, the present invention transmits a transmission signal to a mobile station apparatus using a plurality of downlink element frequency bands, which are predetermined frequency bandwidth bands, and has a predetermined frequency bandwidth band. A communication control method in a base station apparatus that receives a transmission signal from the mobile station apparatus using a plurality of uplink element frequency bands, wherein the base station apparatus includes each of the uplink element frequency bands and the downlink element frequency. A communication control method comprising a step of generating channel quality indicator arrangement association switching information for controlling association with a channel quality indicator indicating reception quality of each band and transmitting the information to the mobile station device.

  (24) Furthermore, the present invention receives a transmission signal from a base station apparatus using a plurality of downlink element frequency bands, which are predetermined frequency bandwidth bands, and uses a predetermined frequency bandwidth band. A computer of a mobile station apparatus that transmits a transmission signal to a base station apparatus using a plurality of uplink element frequency bands, and for each downlink element frequency band, a channel quality index indicating reception quality of the downlink element frequency band Generated uplink control data generation means, channel quality indicator association information indicating association between each uplink element frequency band and channel quality indicator of each downlink element frequency band generated by the uplink control data generation means Channel quality indicator association information with different associations before and after the passage of a predetermined association switching cycle. Channel quality indicator association switching means for determining, channel quality indicator for each downlink element frequency band generated by the uplink control data generating means, channel quality indicator association determined by the channel quality indicator association switching means A communication control program that functions as a transmission processing unit that is arranged in the uplink element frequency band associated with information and transmits the information to the base station apparatus.

  (25) Further, the present invention transmits a transmission signal to the mobile station apparatus using a plurality of downlink element frequency bands, which are predetermined frequency bandwidth bands, and has a predetermined frequency bandwidth band. A channel quality index indicating the reception quality of each of the uplink element frequency bands and each of the downlink element frequency bands, the computer of the base station apparatus receiving a transmission signal from the mobile station apparatus using a plurality of uplink element frequency bands Is a communication control program that functions as an uplink control channel arrangement determining unit that generates channel quality indicator arrangement association switching information for controlling the association with the mobile station apparatus and transmits the information to the mobile station apparatus.

  Advantageous Effects of Invention According to the present invention, a mobile station apparatus can arrange and transmit a channel quality indicator indicating reception quality in different downlink element frequency bands before and after the lapse of the association switching period in the uplink element frequency band. As a result, even when the channel quality indicator cannot be transmitted in one uplink element frequency band, the reception quality of the downlink element frequency bands that are different before and after the lapse of the switching period corresponding to the other uplink element frequency bands can be reduced. The base station apparatus can perform reliable frequency scheduling, adaptive modulation, and coding for all element frequency bands based on channel quality indices for all downlink element frequency bands. Can be made.

It is a figure explaining the outline about the whole picture of the radio communications system concerning a 1st embodiment of this invention. It is a figure which shows schematic structure of the downlink radio frame from the base station apparatus which concerns on this embodiment to a mobile station apparatus. It is a figure which shows schematic structure of the uplink radio frame from the mobile station apparatus which concerns on this embodiment to a base station apparatus. It is a figure explaining an example of the channel quality parameter | index CQI which concerns on this embodiment. It is the schematic which shows an example of allocation in the time domain of the CQI arrangement | positioning control channel and SR arrangement control channel which concern on this embodiment. It is the schematic which shows an example of allocation in the frequency domain of the CQI arrangement | positioning control channel which concerns on this embodiment, and SR arrangement | positioning control channel. It is a schematic block diagram which shows the structure of the base station apparatus which concerns on this embodiment. It is a figure which shows an example of the CQI arrangement | positioning correlation information which concerns on this embodiment. It is a schematic block diagram which shows the structure of the transmission process part of the base station apparatus which concerns on this embodiment. It is a schematic block diagram which shows the structure of the reception process part of the base station apparatus which concerns on this embodiment. It is a schematic block diagram which shows the structure of the mobile station apparatus which concerns on this embodiment. It is a schematic block diagram which shows the structure of the reception process part of the mobile station apparatus which concerns on this embodiment. It is a schematic block diagram which shows the structure of the transmission process part of the mobile station apparatus which concerns on this embodiment. It is the schematic which shows an example of CQI arrangement | positioning association which concerns on this embodiment. It is the schematic which shows CQI arrangement | positioning association when not switching CQI arrangement | positioning association. It is the schematic which shows CQI arrangement | positioning association in the case of switching CQI arrangement | positioning association which concerns on this embodiment. It is a flowchart which shows operation | movement of the mobile station apparatus which concerns on this embodiment. It is a flowchart which shows operation | movement of the uplink sub-frame arrangement | positioning process which can be SR-arranged based on this embodiment. It is a figure which shows another example of the CQI arrangement | positioning correlation information which concerns on this embodiment. It is a figure which shows another example of the CQI arrangement | positioning correlation information which concerns on this embodiment. It is a figure which shows another example of the CQI arrangement | positioning correlation information which concerns on this embodiment. It is a figure which shows another example of the CQI arrangement | positioning correlation information which concerns on this embodiment. It is a figure which shows schematic structure of the uplink radio frame from the mobile station apparatus to a base station apparatus which concerns on a prior art. It is the schematic which shows an example of allocation in the time domain of the CQI arrangement | positioning control channel and SR arrangement | positioning control channel which concern on a prior art.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. An overview of the wireless communication system 1 according to the present embodiment will be described with reference to FIG. Then, the configuration of the radio frame according to the present embodiment using FIGS. 2 to 6 and 14 to 16, and the configuration of the apparatus of the radio communication system 1 according to the present embodiment using FIGS. 7 and 9 to 13. Will be explained. Further, CQI arrangement association information according to the present embodiment will be described with reference to FIGS. 8 and 19 to 22, and operation processing of the wireless communication system 1 according to the present embodiment will be described with reference to FIGS. 17 and 18.

<Overview of Wireless Communication System 1>
FIG. 1 is a diagram for explaining the outline of the overall image of the wireless communication system 1 according to the first embodiment of the present invention.
In the wireless communication system 1 shown in this figure, a base station device BS1 and a plurality of mobile station devices UE1, UE2, and UE3 perform wireless communication.

Further, in this figure, the downlink of radio communication from the base station apparatus BS1 to the mobile station apparatuses UE1, UE2, UE3 includes a downlink pilot channel, a downlink control channel, and a downlink shared data channel. It shows that. Further, in this figure, the uplink of radio communication from the mobile station apparatuses UE1, UE2, UE3 to the base station apparatus BS1 includes an uplink shared data channel, an uplink pilot channel, and an uplink control channel. It shows that.
Note that the mobile station apparatus UE3 is a mobile station apparatus compatible with EUTRA (Evolved Universal Terrestrial Radio Access; evolution of 3G), and communicates with the base station apparatus BS1 using one of the element frequency bands described later. Device. On the other hand, the mobile station apparatuses UE1 and UE2 are mobile station apparatuses compatible with A-EUTRA (Advanced EUTRA), and are mobile station apparatuses that communicate with the base station apparatus BS1 using one or more element frequency bands.
Hereinafter, in the present embodiment, the base station device BS1 is referred to as a base station device a1, and the mobile station devices UE1 and UE2 are referred to as a mobile station device b1.

<Configuration of downlink radio frame>
FIG. 2 is a diagram illustrating a schematic configuration of a downlink radio frame from the base station apparatus a1 to the mobile station apparatus b1 according to the present embodiment. In this figure, the horizontal axis represents the time domain, and the vertical axis represents the frequency domain.

The downlink radio frame is composed of downlink resource block pairs. This downlink resource block pair is a unit for radio resource allocation or the like, and consists of a frequency band and a time band having a predetermined width. One downlink resource block pair is composed of two downlink resource blocks that are continuous in the time domain.
Also, in this figure, one downlink resource block is composed of 12 downlink subcarriers in the frequency domain, and is composed of 7 OFDM symbols in the time domain.

In the frequency domain shown in this figure, the downlink system bandwidth is a downlink communication bandwidth of the base station device a1, and is a frequency bandwidth that can be used for communication by the mobile station device b1 corresponding to A-EUTRA. is there.
The downlink system bandwidth is composed of N downlink element frequency bands m (m = 1 to N). This downlink element frequency bandwidth is a predetermined frequency bandwidth, and is a frequency bandwidth that can be used for communication by the mobile station apparatus UE3 corresponding to EUTRA. For example, the downlink system band having a bandwidth of 60 MHz is composed of three downlink element frequency bands 1 to 3 having a bandwidth of 20 MHz. In the downlink component frequency band, a plurality of downlink resource blocks are arranged according to the downlink component frequency bandwidth. For example, the downlink element frequency band m having a bandwidth of 20 MHz is composed of 100 downlink resource blocks.

  Further, in the time domain shown in this figure, a downlink slot composed of 7 OFDM symbols, a downlink subframe composed of 2 downlink slots, and a downlink composed of 10 downlink subframes. There is a link radio frame. A unit composed of one downlink subcarrier and one OFDM symbol is called a downlink resource element.

Each downlink subframe is assigned at least a downlink shared data channel used for information data transmission and a downlink control channel used for control data transmission. In FIG. 2, a white area indicates a downlink shared data channel, and an area hatched by a horizontal line indicates a downlink control channel.
Although not shown in this figure, downlink reference signals of downlink pilot channels used for estimating propagation path fluctuations of the downlink shared data channel and downlink control channel are distributed and arranged in a plurality of downlink resource elements. Is done. Here, the downlink reference signal is a signal known in the radio communication system 1 used for the downlink pilot channel.
In the downlink control channel, a signal generated from control data such as a mobile station identifier, downlink shared data channel radio resource allocation information, multi-antenna related information, modulation scheme, coding rate, and retransmission parameter is arranged.

<Configuration of uplink radio frame>
FIG. 3 is a diagram illustrating a schematic configuration of an uplink radio frame from the mobile station apparatus b1 to the base station apparatus a1 according to the present embodiment. In this figure, the horizontal axis represents the time domain, and the vertical axis represents the frequency domain.

The uplink radio frame is composed of uplink resource block pairs. This uplink resource block pair is a radio resource allocation unit for each mobile station apparatus b1, and consists of a frequency band and a time band having a predetermined width. One uplink resource block pair is composed of two uplink resource blocks that are continuous in the time domain.
Also, in this figure, one uplink resource block is composed of 12 uplink subcarriers in the frequency domain, and is composed of 7 SC-FDMA symbols in the time domain. The uplink system bandwidth is the uplink communication bandwidth of the base station apparatus a1.

Further, in the frequency domain shown in this figure, the uplink system bandwidth is the uplink communication bandwidth of the base station device a1, and the frequency band that can be used for communication by the mobile station device b1 corresponding to A-EUTRA. Width.
The uplink system bandwidth is composed of N uplink element frequency bands n (n = 1 to N) (N is referred to as the number of element frequency bands). This uplink element frequency bandwidth is a predetermined frequency bandwidth and is a frequency bandwidth that can be used for communication by the mobile station apparatus UE3 corresponding to EUTRA. For example, an uplink system band with a bandwidth of 60 MHz is composed of three uplink element frequency bands 1 to 3 with a bandwidth of 20 MHz. In the uplink component frequency band, a plurality of uplink resource blocks are arranged according to the uplink component frequency bandwidth. For example, the uplink element frequency band n having a bandwidth of 20 MHz is composed of 100 uplink resource blocks.

  Further, in the time domain shown in this figure, it is composed of an uplink slot composed of 7 SC-FDMA (Single Carrier-Frequency Division Multiple Access) symbols and 2 uplink slots. There are uplink radio frames composed of 10 uplink subframes (time band). A unit composed of one uplink subcarrier and one SC-FDMA symbol is called an uplink resource element.

  Each uplink subframe is assigned at least an uplink shared data channel used for information data transmission and an uplink control channel used for control data transmission. In FIG. 23, the white area indicates an uplink shared data channel, and the hatched area indicates an uplink control channel.

In the uplink control channel, downlink channel quality indicator CQI (Channel Quality Indicator), scheduling request SR (Scheduling Request), or reception response ACK / NACK (Acknowledgement / Negative-Acknowledgement) for downlink shared data channel. The control data signal consisting of is arranged in one uplink resource block pair. Details of the downlink channel quality indicator CQI and the scheduling request SR will be described later.
The uplink resource block pair used for this uplink control channel is an uplink resource block pair at both ends of each uplink element frequency band n, and is composed of uplink resource blocks that are symmetrical in the frequency domain. For example, in FIG. 3, in the uplink element frequency band 1, one uplink resource block pair is configured by combining the uplink resource blocks P11 and P12.

In FIG. 3, the hatched area with vertical lines indicates an uplink pilot channel used for estimating propagation path fluctuations of the uplink shared data channel and the uplink control channel. As shown in this figure, the uplink pilot channel is arranged in the same uplink resource block as the uplink shared data channel (referred to as shared data channel arrangement), and in the same uplink resource block as the uplink control channel. Are arranged in different SC-FDMA symbols depending on whether they are arranged in the control channel (referred to as control channel arrangement) (uplink pilot channel signals are referred to as uplink reference signals).
Also, in the case of control channel arrangement, the uplink reference signal is arranged in different SC-FDMA symbols depending on the control data signal to be arranged.

Specifically, in the case of shared data channel arrangement, the uplink reference signal is arranged in the fourth SC-FDMA symbol in the uplink slot.
Also, in the case of the control channel arrangement in the uplink resource block in which the channel quality indicator CQI is arranged, the uplink reference signal is arranged in the second and sixth SC-FDMA symbols in the uplink slot. Also, in the case of the control channel arrangement in the uplink resource block in which the scheduling request SR is arranged, the uplink reference signal is arranged in the third, fourth, and fifth SC-FDMA symbols in the uplink slot. Similarly, in the case of the control channel arrangement in the uplink resource block in which the reception response ACK / NACK is arranged, the uplink reference signal is transmitted to the third, fourth, and fifth SC-FDMA symbols in the uplink slot. Be placed.

This figure shows a case where the uplink control channel is assigned to the uplink resource block at the extreme end of each uplink component frequency band n, but the second and third from the end of the uplink component frequency band n. In some cases, an uplink resource block such as th is used for the uplink control channel.
In the radio communication system 1 according to the embodiment of the present invention, the OFDM scheme is applied in the downlink, and the NxDFT-Spread OFDM scheme is applied in the uplink. Here, the NxDFT-Spread OFDM scheme is a scheme for transmitting and receiving signals using the DFT-Spread OFDM scheme in units of uplink element frequency bands n as shown in the configurations of a base station apparatus a1 and a mobile station apparatus b1 described later. It is. The NxDFT-Spread OFDM scheme is a processing unit (reception processing for each uplink component frequency band) related to a plurality of DFT-Spread OFDM transmission / reception in an uplink subframe of the wireless communication system 1 using a plurality of uplink component frequency bands n. Part a11-1 to a11-N, and transmission processing units b141-1 to b141-N) for each uplink component frequency band.
As described above, the configuration of the radio frame according to the present embodiment is the same as that of the EUTRA radio frame for each downlink component frequency band m and for each uplink component frequency band n. Thereby, base station apparatus a1 and mobile station apparatus UE3 can communicate using the same downlink element frequency band m and uplink element frequency band n.

<Downlink channel quality indicator CQI, scheduling request SR>
Hereinafter, the channel quality indicator CQI and the scheduling request SR will be described.
FIG. 4 is a diagram for explaining an example of the channel quality indicator CQI according to the present embodiment. This figure is a diagram in the case where the downlink system bandwidth of FIG. 2 is composed of three downlink element frequency bands 1 to 3 (element frequency band N = 3), and the horizontal axis indicates the frequency. .

The channel quality indicator CQI is information that each mobile station apparatus b1 generates for each downlink component frequency band m, and is information that indicates the reception quality of each downlink component frequency band m. For each downlink component frequency band m, the mobile station apparatus b1 measures the reception quality using the downlink reference signal of the downlink pilot channel received from the base station apparatus a1, and generates a channel quality indicator CQI. Hereinafter, the channel quality indicator CQI indicating the reception quality of the downlink component frequency band m (m = 1, 2,..., N) is referred to as the downlink component frequency band mCQI.
In FIG. 4, the mobile station apparatus b1 measures the reception quality using the downlink reference signal of the downlink pilot channel in each of the downlink component frequency bands 1, 2, and 3, and the downlink component frequency band 1CQI and downlink respectively It shows that the link element frequency band 2CQI and the downlink element frequency band 3CQI are generated. That is, one downlink element frequency band mCQI is information indicating the reception quality of one downlink element frequency band m.

  The scheduling request SR is information that the mobile station apparatus b1 requests the base station apparatus a1 to allocate radio resources for the uplink shared data channel. The mobile station apparatus b1 transmits a scheduling request SR when information data to be transmitted accumulates in its own buffer b13 and requests allocation of radio resources of the uplink shared data channel.

  The channel quality indicator CQI and the scheduling request SR are an uplink control channel radio resource (hereinafter referred to as a CQI allocation control channel) in which the downlink channel quality indicator CQI can be allocated, and an uplink control in which the scheduling request SR can be allocated. It is arranged and transmitted in a channel radio resource (hereinafter referred to as an SR arrangement control channel).

FIG. 5 is a schematic diagram illustrating an example of assignment in the time domain of the CQI-arrangeable control channel and the SR-arrangeable control channel according to the present embodiment. This figure shows a time domain (uplink subframe s; subframe number s = 1 to 17) in units of uplink subframes in FIG. 3, and the horizontal axis indicates time.
In FIG. 5, rectangles with reference characters CQI and SR indicate that a CQI arrangement control channel and an SR arrangement control channel are allocated.

FIG. 5 shows that the base station apparatus a1 sets the CQI arrangement control channel for each of the two uplink subframes (uplink subframes 1, 3, 5, 7,...) With respect to the mobile station apparatus b1. Indicates that it has been assigned. Hereinafter, the period (in this figure, the time period for two uplink subframes) in which the CQI allocation control channel is allocated is referred to as CQI allocation period T1 (T1 is a number expressed in units of subframes, For example, T1 = 2 in FIG. 5).
Also, in this figure, the base station apparatus a1 sets the SR arrangement control channels for the mobile station apparatus b1 every six uplink subframes (uplink subframes 1, 7, 13,...). Indicates that it has been assigned. Hereinafter, the period (in this figure, the time period for six uplink subframes) in which the SR allocable control channel is allocated is referred to as the SR allocable period T2 (T2 is a number expressed in units of subframes, For example, in FIG. 5, T2 = 6).

  In FIG. 5, the CQI allocation control channel and the SR allocation control channel are allocated to the same subframe every six uplink subframes (uplink subframes 1, 7, 13,...). . When the mobile station apparatus b1 transmits the scheduling request SR for the uplink element frequency band n of these uplink subframes, the scheduling request having a high importance is scheduled even if the channel quality indicator CQI is also to be arranged. Only the SR is arranged and transmitted in the uplink control channel of this uplink subframe. That is, in this case, the mobile station apparatus b1 does not arrange the channel quality indicator CQI in the uplink element frequency band n of the uplink subframe in which the scheduling request SR is arranged.

  FIG. 6 is a schematic diagram illustrating an example of assignment in the frequency domain of the CQI-arrangeable control channel and the SR-arrangeable control channel according to the present embodiment. Further, this figure is a diagram in the case where the uplink system bandwidth of FIG. 3 is composed of three uplink element frequency bands 1 to 3, and the horizontal axis represents the frequency. Further, this figure shows the frequency domain of downlink subframes 1, 7, and 13 in FIG.

In FIG. 6, the ellipses with the symbols CQIn and SRn indicate radio resources of the control channel in the uplink element frequency band n. The elliptical CQIs 1 to 3 correspond to the rectangular CQI in FIG. 5, and the elliptical SR1 corresponds to the rectangular SR in FIG.
In FIG. 6, CQI arrangement control channels 1 to 3 (CQI 1 to 3) in which any one of the downlink element frequency bands 1 to 3 CQI is allocated to the uplink element frequency bands 1 to 3, respectively. It shows that.
Also, different downlink element frequency bands mCQI are allocated to the CQI allocation control channels 1 to 3, respectively. For example, a downlink element frequency band 1 CQI is allocated to the CQI allocation control channel 1, a downlink element frequency band 2 CQI is allocated to the CQI allocation control channel 2, and a downlink element frequency band 3 CQI is allocated to the CQI allocation control channel 3. .

  FIG. 6 shows that the SR arrangement control channel 1 (SR1) for arranging the scheduling request SR1 is allocated to the uplink element frequency band 1. As described above, the SR-arrangeable control channel 1 is assigned to the uplink element frequency band 1 having the smallest frequency in the uplink system band. However, the present invention is not limited to this, and the SR-arrangeable control channel n may be assigned to another band, or a plurality of (however, the number of element frequency bands N is smaller than 3) SR-arrangeable control channels n may be assigned.

  The CQI allocation control channel and the SR allocation control channel correspond to the uplink resource block pair used for the uplink control channel shown in FIG. That is, the CQI allocation control channel n and the SR allocation control channel n are uplink resource block pairs at both ends of each uplink element frequency band n, and are configured of uplink resource blocks that are symmetrical in the frequency domain. . Further, the CQI allocation control channel n and the SR allocation control channel n are not assigned to the same uplink resource block pair.

In the present embodiment, the mobile station apparatus b1, the association switching period T _{C (T C} of the base station apparatus a1 is predetermined is a number expressed in units subframe, for example, at T _{C =} 6 in FIG. 5 ) Associating information (channel quality indicator association information; hereinafter referred to as CQI arrangement association information) between the CQI arrangement control channel n and the downlink element frequency band mCQI arranged in the CQI arrangement control channel n. , Switch to CQI arrangement association information with different associations. The mobile station apparatus b1 arranges the downlink element frequency band mCQI whose association has been switched to the CQI arrangement control channel n, and transmits it to the base station apparatus a1. Details of this switching process (CQI arrangement association switching process described later) performed by the mobile station apparatus b1 will be described later.

<Configuration of base station apparatus a1>
Hereinafter, the configuration of the base station apparatus a1 according to the present embodiment will be described using FIG. 7, FIG. 9, and FIG.
FIG. 7 is a schematic block diagram showing the configuration of the base station apparatus a1 according to this embodiment. As shown in this figure, the base station apparatus a1 includes a reception processing unit a11, a radio resource control unit a12, a control unit a13, and a transmission processing unit a14.
Also, as shown in this figure, the reception processing unit a11 includes an uplink control channel detection unit a1127. Also, the radio resource control unit a12 includes an uplink control channel arrangement determination unit a121. In addition, the control unit a13 includes an uplink control channel detection control unit a131.

The reception processing unit a11 demodulates and decodes a reception signal received from the mobile station device b1 or the mobile station device UE3 by a reception antenna a152, which will be described later, according to an instruction from the control unit a13. The reception processing unit a11 outputs the demodulated and decoded information data to the upper layer.
Here, the uplink control channel detection unit a1127 of the reception processing unit a11 detects control data by demodulating and decoding the uplink control channel of the received signal based on the control of the uplink control channel detection control unit a131. The control data thus generated or the generated control signal is output to the control unit a13.
For example, the uplink control channel detection unit a1127 demodulates and decodes the downlink element frequency band mCQI arranged in the CQI arrangement possible control channel n of the uplink element frequency band n, and the radio resource control unit via the control unit a13 Output to a12. When the uplink control channel detection unit a1127 detects the scheduling request SR arranged in the SR arrangement enable control channel 1, the uplink control channel detection unit a1127 generates a control signal indicating that the scheduling request SR is detected and outputs the control signal to the control unit a13. . Details of the reception processing unit a11 including the uplink control channel detection unit a1127 will be described later.

The radio resource control unit a12 allocates the radio resource (frequency) of the downlink shared data channel to the mobile station apparatus b1 based on the downlink element frequency band mCQI input from the uplink control channel detection unit a1127 via the control unit a13. Scheduling), selection of the downlink shared data channel modulation scheme and coding rate (adaptive modulation and coding), and transmission power value selection.
In addition, the radio resource control unit a12 performs radio resource allocation of the intermittent transmission / reception cycle, the downlink control channel, the uplink control channel, and the uplink shared data channel. Here, when a control signal indicating that the scheduling request SR has been detected is input from the uplink control channel detection unit a1127, the radio resource control unit a12 is uplinked to the mobile station apparatus b1 that has transmitted the scheduling request SR. Allocate radio resources for the shared data channel. Also, the radio resource control unit a12 selects the coding rate / modulation scheme of the uplink shared data channel.
The radio resource control unit a12 transmits the radio resource control information including the transmission power of each mobile station apparatus b1, the intermittent transmission / reception cycle, the radio resource allocation information indicating the allocation of each channel, and the modulation scheme / coding rate to the control unit a13 and the transmission process. To the part a14.

Here, for the radio resource allocation of the uplink control channel, the uplink control channel arrangement determining unit a121 included in the radio resource control unit a12, for example, at the start of communication connection with the mobile station device b1, this mobile station device b1 CQI arrangement possible period T1 and SR arrangement possible period T2 are determined.
The uplink control channel allocation determining unit a121 generates radio resource control information including the determined CQI allocation possible cycle T1 and SR allocation possible cycle T2. The uplink control channel arrangement determining unit a121 transmits the generated radio resource control information to the mobile station device b1 via the transmission processing unit a14 at the start of communication connection with the mobile station device b1. Also, the uplink control channel arrangement determining unit a121 outputs the generated radio resource control information to the uplink control channel detection control unit a131.

  For the above radio resource allocation, when the uplink control channel allocation determining unit a121 allocates a CQI allocation control channel to a certain uplink subframe, the uplink control channel allocation determining unit a121 assigns each uplink element frequency band to each uplink subframe. A CQI placement control channel is allocated. The uplink control channel allocation determining unit a121 allocates an SR allocation control channel to the uplink element frequency band 1 having the lowest frequency when allocating an SR allocation control channel to a certain uplink subframe. In this way, the SR-arrangeable control channel is fixed and allocated to one uplink element frequency band.

Next, the CQI allocation association determination process performed by the uplink control channel allocation determination unit a121 will be described.
The uplink control channel allocation determining unit a121 determines whether to switch CQI allocation association. For example, the uplink control channel allocation determining unit a121 determines not to switch the CQI allocation association when the number of downlink element frequency bands m used for communication with the mobile station apparatus b1 is 1, and two or more In this case, it is determined to switch the CQI arrangement association.

Also, the uplink control channel allocation determining unit a121 determines a cycle that is the least common multiple of the CQI allocation possible cycle T1 and the SR allocation possible cycle T2 as the association switching cycle T _C (for example, in FIG. 5, T _C = 6). That is, the association switching period T _C is an integral multiple cycle of the CQI placeable period T1, also, it is an integer multiple period of the SR deployable period T2.

Uplink control channel arrangement determination unit a121 is determined information indicating whether to switch the CQI placement correspondence, and generates the CQI placement correspondence switching information including a correspondence switching period T _C. That is, the uplink control channel arrangement determining unit a121 generates CQI arrangement association switching information that controls switching of CQI arrangement association. The uplink control channel arrangement determining unit a121 transmits the radio resource control information including the generated CQI arrangement association switching information to the mobile station apparatus b1 via the transmission processing unit a14. Also, the uplink control channel arrangement determining unit a121 outputs this radio resource control information to the uplink control channel detection control unit a131.

  Based on the radio resource control information input from the radio resource control unit a12, the control unit a13 receives information on radio resource allocation / modulation scheme / coding rate of the uplink shared data channel and the uplink control channel from the reception processing unit a11. And the reception processing unit a11 is controlled. Also, the control unit a13 generates control data to be transmitted using the downlink control channel based on the radio resource control information input from the radio resource control unit a12, and outputs the control data to the transmission processing unit a14.

 Here, for the control of the reception processing unit a11, the uplink control channel detection control unit a131 included in the control unit a13 performs the following based on the radio resource control information input from the uplink control channel arrangement determination unit a121. Thus, the uplink control channel detection unit a1127 is controlled.

When the CQI arrangement association switching information in the radio resource control information indicates that the CQI arrangement association switching is to be performed, the uplink control channel detection control unit a131 reads out and reads out CQI arrangement association information (FIG. 8) stored in advance. was based on the correspondence switching period T _C of the CQI placement correspondence information and CQI arranged correspondence in the switching information stored in advance, and controls the uplink control channel detecting unit A1127. As described below, the control switches the CQI placement correspondence information for each association switching period T _C in correspondence different CQI arranged correspondence information, the CQI placeable control channel n, switched CQI disposed association information This is a control for detecting the downlink element frequency band mCQI associated with.

 On the other hand, when the CQI allocation association switching information indicates that the CQI allocation association switching information is not switched, the uplink control channel detection control unit a131 transmits the CQI allocation control channel n to the uplink control channel detection unit a1127 with the same n. Control is performed to detect the associated downlink element frequency band nCQI.

The transmission processing unit a14 generates a signal to be transmitted using the downlink control channel and the downlink shared data channel based on the control signal input from the control unit a13, and transmits the signal through the transmission antenna a151. Specifically, the transmission processing unit a14 transmits the control data input from the control unit a13 using the downlink control channel.
Also, the transmission processing unit a14 transmits the radio resource control information and the like input from the radio resource control unit a12 and the information data input from the higher layer using the downlink shared data channel. For example, the transmission processing unit a14 transmits the radio resource control information input from the radio resource control unit a12 using the downlink shared data channel. Details of the transmission processing unit a14 will be described later.
For simplification of description, information transmitted using the downlink shared data channel is hereinafter referred to as information data, and the information data includes radio resource control information.

<CQI location association information>
FIG. 8 is a diagram showing an example of CQI arrangement association information according to the present embodiment.
As shown in the figure, the CQI arrangement association information is data in a two-dimensional tabular format consisting of rows and columns, and columns of items of CQI arrangement control channel, first period, second period, and third period. have.
Here, the first period, the items of the second period, and the third period, respectively, in the first cycle, second cycle and third cycle of correspondence switching period T _C of a wireless frame, CQI placeable control The downlink element frequency band CQI corresponding to a channel is shown. The z-th cycle (z = 1, 2, 3) is represented by the following formula (1).

However, (A mod B) indicates a remainder obtained by dividing A by B, t is a maximum integer equal to or _smaller than s / TC, s is an uplink subframe number, N is the number of element frequency bands (in the example of FIG. 8) , N = 3). For example, in FIG. 5, T _C = 6, uplink subframes 1 to 6 are in the first period, uplink subframes 7 to 12 are in the second period, and uplink subframes 13 to 18 are in the third period. Although not shown in FIG. 5, uplink subframes 19 to 24 are the first period.

For example, FIG. 8 shows that downlink element frequency bands 1, 2, and 3 CQI are associated with CQI-arrangeable control channels 1, 2, and 3, respectively, in the first period. FIG. 8 also shows that downlink element frequency bands 2, 3, and 1 CQI are associated with CQI-arrangeable control channels 1, 2, and 3, respectively, in the second period.
As described above, in the CQI arrangement association information, the CQI arrangement association is switched every association switching cycle T _C (every z-th cycle), and the association is different before and after the association switching cycle T _C elapses. Indicates information.

<Configuration of transmission processing unit a14 of base station apparatus a1>
Hereinafter, details of the transmission processing unit a14 of the base station apparatus a1 will be described.
FIG. 9 is a schematic block diagram illustrating a configuration of the transmission processing unit a14 of the base station apparatus a1 according to the present embodiment.

As shown in this figure, the transmission processing unit a14 includes a plurality of downlink shared data channel processing units a141-1 to a141-i, a plurality of downlink control channel processing units a142-1 to a142-j, and downlink pilot channels. Processing unit a1431, multiplexing unit a1432, IFFT (Inverse Fast Fourier Transform; fast inverse Fourier transform) unit a1433, GI (Guard Interval) insertion unit a1434, D / A (Digital / Analog; digital analog conversion) unit a1435, A transmission RF (Radio Frequency) section a1436 is included, and is connected to a transmission antenna a151.
Each of the downlink shared data channel processing units a141-1 to a141-i and each of the downlink control channel processing units a142-1 to a142-j has the same configuration and function. The link shared data channel processing unit a141-1 and the downlink control channel processing unit a142-1) will be described as a representative.

  Also, as shown in this figure, the downlink shared data channel processing unit a141-1 includes a turbo coding unit a1411 and a data modulation unit a1412. The downlink control channel processing unit a142-1 includes a convolutional code unit a1421 and a QPSK (Quadrature Phase Shift Keying) modulation unit a1422.

The downlink shared data channel processing unit a141-1 performs baseband signal processing for transmitting information data to the mobile station apparatus b1 by the OFDM scheme.
The turbo coding unit a1411 performs turbo coding for improving the error tolerance of the data at the coding rate input from the control unit a13, and outputs the input information data to the data modulation unit a1412.
The data modulation unit a1412 modulates the code data encoded by the turbo coding unit a1411 using a modulation method input from the control unit a13, for example, a modulation method such as QPSK, 16QAM, or 64QAM (64-value quadrature amplitude modulation). A signal sequence of modulation symbols is generated. The data modulation unit a1412 outputs the generated signal sequence to the multiplexing unit a1432.

The downlink control channel processing unit a142-1 performs baseband signal processing for transmitting the control data input from the control unit a13 by the OFDM method.
The convolutional coding unit a1421 performs convolutional coding for increasing the error tolerance of the control data based on the coding rate of the control information input from the control unit a13. Here, the control data is controlled in bit units. In addition, the convolutional code unit a1421 also performs rate matching to adjust the number of output bits for the bits subjected to the convolutional coding process based on the coding rate input from the control unit a13.
The convolutional code unit a1421 outputs the encoded control data to the QPSK modulation unit a1422.
The QPSK modulation unit a1422 outputs a signal sequence of modulation symbols obtained by modulating the control data encoded by the convolutional coding unit a1421 using the QPSK modulation method, to the multiplexing unit a1432.

The downlink pilot channel processing unit a1431 generates a downlink reference signal that is a known signal in the mobile station apparatus b1, and outputs the downlink reference signal to the multiplexing unit a1432.
The multiplexing unit a1432 includes a signal input from the downlink pilot channel processing unit a1431, a signal input from each of the downlink shared data channel processing units a141-1 to a141-i, and a downlink control channel processing unit a142-1. The signals input from each of ~ a142-j are multiplexed into the downlink radio frame according to the control from the control unit a13.

The multiplexing unit a1432 performs multiplexing between the downlink shared data channel and the downlink control channel by time multiplexing as shown in FIG. The multiplexing unit a1432 performs multiplexing between the downlink pilot channel and other channels by time / frequency multiplexing. Also, the multiplexing unit a1432 multiplexes the downlink shared data channel addressed to each mobile station apparatus b1 in units of downlink resource block pairs, and uses a plurality of downlink resource block pairs for one mobile station apparatus b1. In some cases, the downlink shared data channel is multiplexed. Further, the multiplexing unit a1432 performs multiplexing of the downlink control channel addressed to each mobile station apparatus b1 using a plurality of resource elements that are dispersed in the downlink element frequency band.
The multiplexing unit a1432 outputs the multiplexed signal to the IFFT unit a1433.

IFFT section a1433 performs fast inverse Fourier transform on the signal multiplexed by multiplexing section a1432, performs OFDM modulation, and outputs the result to GI insertion section a1434.
The GI insertion unit a1434 generates a baseband digital signal composed of symbols in the OFDM scheme by adding a guard interval to the signal modulated by the IFFT unit a1433 in the OFDM scheme. As is well known, the guard interval is generated by duplicating the beginning or end of the symbol to be transmitted. The GI insertion unit a1434 outputs the generated baseband digital signal to the D / A unit a1435.
The D / A unit a1435 converts the baseband digital signal input from the GI insertion unit a1434 into an analog signal and outputs the analog signal to the transmission RF unit a1436.
The transmission RF unit a1436 generates an in-phase component and a quadrature component of the intermediate frequency from the analog signal input from the D / A unit a1435, and removes an extra frequency component for the intermediate frequency band. Next, the transmission RF unit a1436 converts (up-converts) the intermediate frequency signal into a high frequency signal, removes excess frequency components, amplifies the power, and transmits the signal to the mobile station apparatus b1 via the transmission antenna a151. Send.

<Configuration of reception processing unit a11 of base station apparatus a1>
Hereinafter, details of the reception processing unit a11 of the base station apparatus a1 will be described.
FIG. 10 is a schematic block diagram illustrating a configuration of the reception processing unit a11 of the base station apparatus a1 according to the present embodiment.

  As shown in this figure, the reception processing unit a11 includes a reception RF unit a1111, an A / D (Analog / Digital; analog-digital conversion) unit a1112, an element frequency band separation unit a1113, and a plurality of uplink element frequency band reception processes. Part a11-1 to a11-N, and is connected to the receiving antenna a152.

Each uplink element frequency band reception processing unit a11-n (n = 1 to N) is provided for each uplink element frequency band n and has the same configuration and function. The frequency band reception processing unit a11-1) will be described as a representative.
As shown in this figure, the uplink element frequency band reception processing unit a11-1 includes a symbol timing detection unit a1121, a GI removal unit a1122, an FFT unit a1123, a subcarrier demapping unit a1124, and a propagation path estimation unit a1125. An uplink control channel propagation path equalization unit a1126, an uplink control channel detection unit a1127, an uplink shared data channel propagation path equalization unit a1128, an IDFT unit a1129, a data demodulation unit a1130, and a turbo decoding unit a1131 is provided.

The reception RF unit a1111 appropriately amplifies the signal received by the reception antenna a152 and converts (down-converts) it to an intermediate frequency. The reception RF unit a1111 removes unnecessary frequency components from the intermediate frequency signal, controls the amplification level so that the signal level is properly maintained, and performs quadrature demodulation based on the in-phase and quadrature components of the received signal. To do. The reception RF unit a1111 outputs the quadrature demodulated analog signal to the A / D unit a1112.
The A / D unit a1112 converts the analog signal quadrature demodulated by the reception RF unit a1111 into a digital signal, and outputs the converted digital signal to the element frequency band separation unit a1113.
The element frequency band separation unit a1113 separates the received signal for each uplink element frequency band n of the uplink system bandwidth, and receives the separated received signal of the uplink element frequency band n for each uplink element frequency band. The data is output to the processing unit a11-n.

The reception processing units a11-n for each uplink component frequency band respectively receive the uplink shared data channel and the uplink control channel in the received signals of the uplink component frequency bands 1 to N input from the component frequency band separation unit a1113. Demodulation and decoding are performed to detect information data and control data.
The symbol timing detection unit a1121 detects the symbol timing based on the signal input from the element frequency band separation unit a1113, and outputs a control signal indicating the detected symbol boundary timing to the GI removal unit a1122.
The GI removal unit a1122 removes a portion corresponding to the guard interval from the signal input from the element frequency band separation unit a1113 based on the control signal from the symbol timing detection unit a1121, and converts the remaining portion of the signal to the FFT unit. a1123.

The FFT unit a1123 performs fast Fourier transform on the signal input from the GI removal unit a1122, performs demodulation in the DFT-Spread-OFDM scheme, and outputs the result to the subcarrier demapping unit a1124. Note that the number of points of the FFT unit a1123 is equal to the number of points of an IFFT unit b1417 of the mobile station apparatus b1 described later.
The subcarrier demapping section a1124, based on the radio resource allocation information input from the control section a13, the signal demodulated by the FFT section a1123, the uplink pilot channel signal, the uplink shared data channel signal, and the uplink Separated into control channel signals. The subcarrier demapping section a1124 outputs the separated uplink pilot channel signal to the propagation path estimation section a1125. Also, the subcarrier demapping section a1124 outputs the separated uplink control channel signal to the propagation path equalization section a1128.

  Further, when there are several radio resource candidates in which the uplink control channel is arranged, the subcarrier demapping unit a1124, based on the control signal input from the control unit a13, signals of all candidate uplink control channels Is output to the propagation path equalization unit a1126 for the uplink control channel.

The propagation path estimation unit a1125 estimates propagation path fluctuations using the uplink reference signal and the known signal of the uplink pilot channel separated by the subcarrier demapping unit a1124. The propagation path estimation unit a1125 outputs the estimated propagation path estimation value to the propagation path equalization unit a1126 and the propagation path equalization unit a1128. This channel estimation value is output for each subcarrier.
The propagation path equalization unit a1126 equalizes the amplitude and phase of the uplink control channel signal separated by the subcarrier demapping unit a1124 based on the propagation path estimation value input from the propagation path estimation unit a1125. The propagation path equalization unit a1126 outputs the equalized signal to the uplink control channel detection unit a1127.

  The uplink control channel detection unit a1127 responds to control data (for example, downlink channel quality indicator CQI, scheduling request SR, or reception response ACK / NACK) transmitted from the signal input from the propagation path equalization unit a1126. Then, it demodulates and decodes and detects the control data.

For example, the uplink control channel detection unit a1127 detects a channel quality indicator CQI or a scheduling request SR from a certain mobile station apparatus as follows.
The uplink control channel detection unit a1127 detects the downlink element frequency band mCQI associated with the CQI allocation correspondence from the CQI allocation possible control channel n in the CQI allocation possible cycle T1. Further, the uplink control channel detection unit a1127 detects the scheduling request SR from the SR arrangement possible control channel 1 in the SR arrangement possible period T2.

Here, the uplink control channel detection unit a1127 has the same uplink element frequency band (in this embodiment, uplink element frequency band 1) and the same uplink subframe in which the CQI arrangement control channel and the SR arrangement control channel are the same. If it is assigned, the following processing is performed.
First, the uplink control channel detection unit a1127 detects a signal arranged in the SR arrangement control channel. For example, the uplink control channel detection unit a1127 detects the signal of the scheduling request SR from the mobile station apparatus b1 when the amplitude (power) of the signal arranged in the SR arrangement control channel is equal to or greater than a predetermined threshold. It is determined. In this case, the uplink control channel detection unit a1127 generates a control signal indicating that the scheduling request SR has been detected, and outputs the control signal to the control unit a13.
On the other hand, the uplink control channel detection unit a1127 determines that the signal of the scheduling request SR from the mobile station apparatus b1 has not been detected when the signal allocated to the SR allocation control channel is smaller than a predetermined threshold. In this case, the uplink control channel detection unit a1127 generates a control signal indicating that the scheduling request SR has not been detected, and outputs the control signal to the control unit a13. In this case, the uplink control channel detection unit a1127 demodulates and decodes the control data signal arranged in the CQI arrangement control channel 1.

Also, the uplink control channel detection unit a1127 detects the downlink element frequency band mCQI as follows.
When the uplink control channel detection control unit a131 performs control without switching the CQI allocation association, the uplink control channel detection unit a1127 detects the downlink element frequency band nCQI from the CQI allocation control channel n.

On the other hand, if the uplink control channel detection control unit a131 performs control to switch the CQI placement correspondence, uplink control channel detection unit a1127 switches the CQI placement correspondence to each association switching period T _C, the downlink component A frequency band mCQI is detected.
For example, when the control is performed based on the CQI arrangement association information in FIG. 8, the uplink control channel detection unit a1127 includes uplink subframes 1 to 6 (first period) and the CQI arrangement possible period T1 = 2. In uplink subframes 1, 3, and 5, downlink element frequency bands 1, 2, and 3 CQI are detected from CQI arrangement control channels 1, 2, and 3, respectively. Also, the uplink control channel detection unit a1127 performs downlink transmission from the CQI-arrangeable control channels 1, 2, 3 in the uplink subframes 7, 9, 11 of the uplink subframes 1 to 6 (second period), respectively. Link element frequency bands 2, 3, 1 and CQI are detected.

  Similarly, the uplink control channel detection unit a1127, based on the radio resource allocation information of the uplink control channel of the radio resource control information, controls data other than the channel quality indicator CQI or the scheduling request SR (for example, reception response ACK / NACK) is detected and output to the control unit a13.

The propagation path equalization unit a1128 equalizes the amplitude and phase of the uplink shared data channel signal separated by the subcarrier demapping unit a1124 based on the propagation path estimation value input from the propagation path estimation unit a1125. Here, equalization refers to a process for restoring the fluctuation of the propagation path received by the signal during wireless communication. The propagation path equalization unit a1128 outputs the equalized signal to the IDFT unit a1129.
The IDFT unit a1129 performs discrete inverse Fourier transform on the signal input from the propagation path equalization unit a1128 and outputs the result to the data demodulation unit a1130.

The data demodulation unit a1130 demodulates the uplink shared data channel signal converted by the IDFT unit a1129, and outputs the demodulated uplink shared data channel signal to the turbo decoding unit a1131. This demodulation is a demodulation corresponding to the modulation method used in the data modulation unit b1412 of the transmission processing unit b141-1 for each uplink element frequency band of the mobile station device b1. The modulation method is input from the control unit a13.
The turbo decoding unit a1131 decodes information data from the demodulated uplink shared data channel signal input from the data demodulation unit a1130. The coding rate is input from the control unit a13. The turbo decoding unit a1131 outputs the decoded information data to an upper layer (not shown).

<Overall configuration of mobile station apparatus b1>
Hereinafter, the configuration of the mobile station apparatus b1 according to the present embodiment will be described with reference to FIG. 11, FIG. 12, and FIG.
FIG. 11 is a schematic block diagram showing the configuration of the mobile station device b1 according to this embodiment. As shown in this figure, the mobile station apparatus b1 includes a reception processing unit b11, a control unit b12, a buffer b13, and a transmission processing unit b14.
Also, as shown in this figure, the reception processing unit b11 includes a reception quality measurement unit b1117 and a downlink shared data channel decoding unit b113. In addition, the control unit b12 includes a channel quality indicator association switching unit b121 and an uplink control data generation unit b122. The transmission processing unit b14 includes an uplink control channel processing unit b1415 and a subcarrier mapping unit b1416.

The reception processing unit b11 receives a signal from the base station device a1, and demodulates and decodes the received signal received from the mobile station device b1 by the reception antenna b151 in accordance with an instruction from the control unit b12.
For example, when the reception processing unit b11 detects a downlink control channel signal addressed to itself, the reception processing unit b11 outputs control data obtained by decoding the downlink control channel signal to the control unit b12.
In the demodulation and decoding processing of the received signal, the downlink shared data channel decoding unit b113 included in the reception processing unit b11 is controlled by the control unit b12 based on the control data output from the reception processing unit b11. Decodes the downlink shared data channel addressed to it. The downlink shared data channel decoding unit b113 outputs the decoded information data to the control unit b12. For example, the downlink shared data channel decoding unit b113 allocates the uplink element frequency band n and the SR allocable control channel n to which the CQI allocable period T1, the SR allocable period T2, and the CQI allocable control channel n are allocated from the information data. Radio resource control information including the uplink component frequency band n is extracted and output to the channel quality indicator association switching unit b121.

The reception quality measurement unit b1117 measures the reception quality for each downlink component frequency band m using the downlink reference signal of the downlink pilot channel received from the base station apparatus a1, and generates the measurement result as uplink control data. To the part b122.
Details of the reception processing unit b11 will be described later.

  The control unit b12 controls the reception processing unit b11 and the transmission processing unit b14 based on the control data input from the reception processing unit b11 and the radio resource control information in the information data. For example, the control unit b12 controls the reception processing unit b11 based on radio resource allocation information, modulation scheme / coding rate, etc. in the radio resource control information. Further, the control unit b12 outputs the information data to the upper layer.

Here, regarding the control of the transmission processing unit b14, the channel quality indicator association switching unit b121 included in the control unit b12 is based on the radio resource control information input from the downlink shared data channel decoding unit b113, and is subcarrier mapped. Part b1416 is controlled.
When the CQI arrangement association switching information in the radio resource control information indicates that the CQI arrangement association switching is to be performed, the channel quality indicator association switching unit b121 performs the next CQI arrangement association switching process.
Channel quality indicator association switching unit b121 reads the CQI placement correspondence information stored in advance (Fig. 8), based on the correspondence switching period T _C in the CQI placement correspondence switching information, the sub-carrier of the transmission processing unit b14 The mapping unit b 1416 is controlled. As described later, in this control, the correspondence CQI arranged correspondence information for each switching period T _C, the association is switched to a different CQI placement correspondence information. This control is control for arranging the downlink element frequency band mCQI associated with the switched CQI arrangement association information in the CQI arrangement possible control channel n. That is, the channel quality indicator association switching unit b121 has the CQI placement association information, the association is determined in different CQI placement correspondence information in the course before and after the association switching period T _C of a predetermined.
On the other hand, when the channel quality indicator association switching unit b121 indicates that the CQI allocation association switching information does not switch the CQI allocation association, the subcarrier mapping unit b1416 transmits the downlink element frequency band nCQI to the CQI allocation enable control channel n. Control to arrange the.

The uplink control data generation unit b122 generates control data (for example, downlink channel quality indicator CQI, scheduling request SR, or reception response ACK / NACK) to be arranged in the uplink control channel.
For example, the uplink control data generation unit b122 generates the downlink element frequency band mCQI indicating the reception quality of each downlink element frequency band m, which is the measurement result input from the reception quality measurement unit b1117.
The uplink control data generation unit b122 detects the amount of information data stored in the buffer b13, and generates a scheduling request SR when the detected amount of information data exceeds a predetermined threshold.
The uplink control data generation unit b122 outputs the generated control data to the uplink control channel processing unit b1415 of the transmission processing unit b14.

The transmission processing unit b14 encodes the information data and control data input via the buffer b13 according to the instruction of the control unit b12, places the modulated signal in the uplink radio resource, and transmits the modulated data via the transmission antenna b152. To the base station apparatus a1.
Here, the uplink control channel processing unit b1415 outputs, to the subcarrier mapping unit b1416, a control data signal obtained by performing processing such as modulation on the control data input from the uplink control data generating unit b122. The subcarrier mapping unit b1416 arranges the control data signal input from the uplink control channel processing unit b1415 in the control channel according to the control from the control unit b12. Details of the transmission processing unit b14 will be described later.

<Configuration of reception processing unit b11 of mobile station apparatus b1>
Hereinafter, details of the reception processing unit b11 of the mobile station apparatus b1 will be described.
FIG. 12 is a schematic block diagram showing the configuration of the reception processing unit b11 of the mobile station apparatus b1 according to this embodiment.
As shown in this figure, reception processing unit b11, reception RF unit b1111, A / D unit b1112, symbol timing detection unit b1113, GI removal unit b1114, FFT unit b1115, demultiplexing unit b1116, reception quality measurement unit b1117, propagation A path estimation unit b1118, a downlink shared data channel propagation channel compensation unit b1119, a downlink control channel propagation channel compensation unit b1120, a downlink shared data channel decoding unit b113, and a downlink control channel decoding unit b114. Configured and connected to the receiving antenna b151.
Moreover, as shown in this figure, the downlink shared data channel decoding part b113 is provided with the data demodulation part b1131 and the turbo decoding part b1132. Further, the downlink control channel decoding unit b114 includes a QPSK demodulation unit b1141 and a Viterbi decoder unit b1142.

The reception RF unit b1111 receives a signal from the base station apparatus a1 via the reception antenna b151. The reception RF unit b1111 appropriately amplifies the received signal and converts it to an intermediate frequency (down-conversion). The reception RF unit b1111 removes unnecessary frequency components from the intermediate frequency signal, controls the amplification level so that the signal level is properly maintained, and performs quadrature demodulation based on the in-phase and quadrature components of the received signal. To do.
The reception RF unit b1111 outputs the quadrature demodulated analog signal to the A / D unit b1112.

The A / D unit b1112 converts the analog signal quadrature demodulated by the reception RF unit b1111 into a digital signal, and outputs the converted digital signal to the symbol timing detection unit b1113 and the GI removal unit b1114.
The symbol timing detection unit b1113 detects the symbol timing based on the digital signal converted by the A / D unit b1112 and outputs a control signal indicating the detected symbol boundary timing to the GI removal unit b1114.

The GI removal unit b1114 removes a portion corresponding to the guard interval from the digital signal output from the A / D unit b1112 based on the control signal from the symbol timing detection unit b1113, and converts the remaining portion of the signal to the FFT unit b1115. Output to.
The FFT unit b1115 performs fast Fourier transform on the signal input from the GI removal unit b1114, performs OFDM demodulation, and outputs the result to the demultiplexing unit b1116.

The demultiplexing unit b1116 demultiplexes the signal demodulated by the FFT unit b1115 into a downlink control channel signal and a downlink shared data channel signal in accordance with control from the control unit b12. The demultiplexing unit b1116 outputs the separated downlink shared data channel signal to the propagation path compensation unit b1119, and outputs the separated downlink control channel signal to the propagation path compensation unit b1120.
Also, the demultiplexing unit b1116 demultiplexes the downlink resource element in which the downlink pilot channel is arranged, and outputs the downlink reference signal of the downlink pilot channel to the reception quality measurement unit b1117 and the propagation path estimation unit b1118.

  The reception quality measurement unit b1117 measures the reception quality for the downlink element frequency band m using the downlink reference signal of the downlink pilot channel received from the base station apparatus a1, and outputs the measurement result to the control unit b12. .

The propagation path estimation unit b1118 estimates the state of the propagation path using the downlink reference signal and the known signal of the downlink pilot channel separated by the demultiplexing unit b1116, and compensates for propagation path fluctuation so that the amplitude and The channel compensation value for equalizing the phase is output to the channel compensator b1119 and the channel compensator b1120. This propagation path compensation value is output for each subcarrier.
The propagation path compensation unit b1119 equalizes the amplitude and phase of the downlink shared data channel signal separated by the demultiplexing unit b1116 for each subcarrier according to the propagation path compensation value input from the propagation path estimation unit b1118. The propagation path compensation unit b1119 outputs a signal obtained by equalizing the propagation path to the data demodulation unit b1131 of the downlink shared data channel decoding unit b113.

The downlink shared data channel decoding unit b113 demodulates and decodes the downlink shared data channel according to control from the control unit b12, and detects information data.
The data demodulator b1131 demodulates the downlink shared data channel signal input from the propagation path compensator b1119, and outputs the demodulated downlink shared data channel signal to the turbo decoder b1132. This demodulation is demodulation corresponding to the modulation method used in the data modulation unit a1412 of the base station device a1, and this modulation method is notified to the mobile station device b1 by control data.

  The turbo decoder b1132 decodes information data from the demodulated downlink shared data channel signal input from the data demodulator b1131, and outputs it to the upper layer via the controller b12. The information data includes radio resource control information, that is, transmission power of the mobile station apparatus b1, intermittent transmission / reception cycle, radio resource allocation information, modulation scheme / coding rate, CQI arrangement possible period T1, SR arrangement possible period T2. And CQI arrangement association switching information.

  The propagation path compensation unit b1120 equalizes the amplitude and phase of the downlink control channel signal separated by the demultiplexing unit b1116 according to the propagation path compensation value input from the propagation path estimation unit b1118. The propagation path compensation unit b1120 outputs the equalized signal to the QPSK demodulation unit b1141 of the downlink control channel decoding unit b114.

The downlink control channel decoding unit b114 demodulates and decodes the signal input from the propagation path compensation unit b1120 as follows, and detects control data addressed to itself.
The QPSK demodulator b1141 performs QPSK demodulation on the downlink control channel signal and outputs the result to the Viterbi decoder b1142.
The Viterbi decoder b1142 decodes the signal demodulated by the QPSK demodulator b1141, and outputs the decoded control data to the controller b12. Here, this signal is expressed in bit units, and the Viterbi decoder unit b1142 also performs rate dematching to adjust the number of bits for performing Viterbi decoding processing on the input bits. Note that the control unit b12 determines whether or not the control data input from the Viterbi decoder unit b1142 has an error, and when determining that there is no error, determines that the control data is control data addressed to the own apparatus. The control unit b12 controls the reception processing unit b11 (for example, the demultiplexing unit b1116, the data demodulating unit b1131, and the turbo decoding unit b1132) and the transmission processing unit b14 based on the control data addressed to its own device.

<Configuration of transmission processing unit b14 of mobile station apparatus b1>
FIG. 13 is a schematic block diagram showing the configuration of the transmission processing unit b14 of the mobile station apparatus b1 according to this embodiment.
As shown in the figure, the transmission processing unit b14 includes a plurality of uplink component frequency band transmission processing units b141-1 to b141-N, an element frequency band synthesis unit b1421, a D / A unit b1422, and a transmission RF unit b1423. And is connected to the transmission antenna b152.
The uplink element frequency band-specific transmission processing units b141-n (n = 1 to N) are provided for each uplink element frequency band n, and each has the same configuration and function. The link element frequency band transmission processing unit b141-1) will be described as a representative.

  Further, as shown in this figure, the transmission processing unit b141-1 for each uplink element frequency band includes a turbo coding unit b1411, a data modulation unit b1412, a DFT unit b1413, an uplink pilot channel processing unit b1414, and an uplink control channel processing. Unit b1415, subcarrier mapping unit b1416, IFFT unit b1417, and GI insertion unit b1418.

The uplink component frequency band-specific transmission processing unit b141-1 encodes and modulates information data and control data, and uses an uplink shared data channel and an uplink control channel in the uplink component frequency band, respectively. Generates a signal to be transmitted.
The turbo coding unit b1411 performs turbo coding for increasing the error tolerance of the data with the coding rate instructed from the control unit b12 on the information data input from the upper layer (not shown), and the data modulation unit b1412.

The data modulation unit b1412 modulates the code data encoded by the turbo coding unit b1411 with a modulation method instructed by the control unit b12, for example, a modulation method such as QPSK, 16QAM, or 64QAM, and a signal sequence of modulation symbols. Generate. The data modulation unit b1412 outputs the generated modulation symbol signal sequence to the DFT unit b1413.
The DFT unit b1413 performs discrete Fourier transform on the signal output from the data modulation unit b1412, and outputs the information data signal obtained by the discrete Fourier transform to the subcarrier mapping unit b1416. As described above, the mobile station apparatus b1 performs discrete Fourier transform on the signal sequence of modulation symbols, and the frequency domain signal (information data signal) subjected to the discrete Fourier transform is subcarrier mapped by a subcarrier mapping unit b1416 described later. (DFT-Spread OFDM system). Thereby, the mobile station apparatus b1 can prevent the PAPR of the mobile station apparatus b1 from increasing.
The uplink pilot channel processing unit b1414 generates an uplink reference signal, which is a known signal in the base station apparatus a1, and is a signal stored in advance, and outputs the uplink reference signal to the subcarrier mapping unit b1416.

The uplink control channel processing unit b1415 performs baseband signal processing for transmitting control data input from the control unit b12. For example, the uplink control channel processing unit b1415 receives the downlink element frequency band mCQI, the scheduling request SR, or the reception response ACK / NACK as control data.
Uplink control channel processing section b1415 generates a control data signal of a different format according to the type of control data to be processed under the control of control section b12, and outputs it to subcarrier mapping section b1416.

  The subcarrier mapping unit b1416 includes a reference signal input from the uplink pilot channel processing unit b1414, an information data signal input from the DFT unit b1413, and a control data signal input from each of the uplink control channel processing unit b1415. Are arranged in the subcarrier according to the instruction from the control unit b12 and output to the IFFT unit b1417.

For example, the subcarrier mapping unit b 1416 arranges the channel quality indicator CQI or the scheduling request SR as follows under the control of the channel quality indicator association switching unit b121.
The subcarrier mapping unit b1416 arranges the downlink element frequency band mCQI associated with the CQI arrangement association information in the CQI arrangement control channel n in the CQI arrangement period T1. In addition, when the scheduling request SR is input from the uplink control channel processing unit b1415, the subcarrier mapping unit b1416 arranges the scheduling request SR in the SR arrangement possible control channel 1 in the SR arrangement possible period T2. In addition, the amplitude (power) of the scheduling request SR to be arranged is controlled by the base station apparatus a1 based on the uplink reception quality of the mobile station apparatus b1.

Here, when the scheduling request SR is arranged, the subcarrier mapping unit b 1416 performs scheduling in the uplink element frequency band (in this embodiment, uplink element frequency band 1) and the uplink subframe in which the scheduling request SR is arranged. Only the request SR is arranged, and the downlink element frequency band mCQI is not arranged. As a result, the subcarrier mapping unit b 1416 ensures the single carrier attribute and prevents the PAPR in the own apparatus from increasing.
For example, as shown in FIG. 6, in the uplink, the CQI-arrangeable control channel and the SR-arrangeable control channel are provided every six uplink subframes (uplink subframes 1, 7, 13,...). Are assigned to the same uplink subframe. Also, as shown in FIG. 5, in the uplink element frequency band 1, a CQI arrangement control channel and an SR arrangement control channel are allocated. The subcarrier mapping unit b 1416 arranges the channel quality indicator CQI when arranging the scheduling request SR1 in the uplink element frequency band 1 of the uplink subframe (uplink subframes 1, 7, 13,...). do not do. That is, the subcarrier mapping unit b1416 (transmission processing unit b14), when the uplink control data generation unit b122 generates the scheduling request SR, the uplink element frequency band n to which the CQI allocation control channel is allocated and the uplink sub When the frame and the uplink element frequency band n and uplink subframe to which the SR-arrangeable control channel is allocated are the same uplink element frequency band n and uplink subframe, the uplink element frequency band n and The channel quality indicator CQI is not arranged in the radio resource of the uplink subframe.

Also, the subcarrier mapping unit b 1416 arranges the downlink element frequency band mCQI as follows under the control of the channel quality indicator association switching unit b121.
When the channel quality indicator association switching unit b121 performs control not to switch the CQI allocation association, the subcarrier mapping unit b1416 allocates the downlink element frequency band nCQI to the CQI allocation control channel n.

On the other hand, when the channel quality indicator association switching unit b121 performs control to switch the CQI placement correspondence, subcarrier mapping unit b1416 is correspondence mapping different CQI arranged correspondence the CQI placement correspondence to each switching period T _C To downlink element frequency band mCQI.
For example, when the control is performed based on the CQI arrangement association information in FIG. 8, the subcarrier mapping unit b 1416 has uplink subframes 1 to 6 (first period) and has a CQI arrangement possible period T1 = 2. In uplink subframes 1, 3, and 5, downlink element frequency bands 1, 2, and 3 CQIs are allocated to CQI allocation-possible control channels 1, 2, and 3, respectively. Also, the subcarrier mapping unit b 1416 transmits the downlink element frequency to the CQI allocation control channels 1, 2, and 3 in the uplink subframes 7, 9, and 11 of the uplink subframes 1 to 6 (second period), respectively. Bands 2, 3, and 1 CQI are arranged.
An example of the CQI layout association switching process will be described later (FIG. 14).

IFFT section b 1417 performs fast inverse Fourier transform on the signal output from subcarrier mapping section b 1416 and outputs the result to GI insertion section b 1418. Note that the number of points of the IFFT unit b1417 is larger than the number of points of the DFT unit b1413.
The GI insertion unit b1418 adds a guard interval to the signal input from the IFFT unit b1417 and outputs the signal to the element frequency band synthesis unit b1421.

The element frequency band synthesizer b1421 synthesizes signals for each uplink element frequency band n input from each uplink element frequency band transmission processor b141-n, and outputs the synthesized signal to the D / A part b1422.
The D / A unit b1422 converts the baseband digital signal input from the element frequency band synthesis unit b1421 into an analog signal and outputs the analog signal to the transmission RF unit b1423.
The transmission RF unit b1423 generates an in-phase component and a quadrature component of the intermediate frequency from the analog signal input from the D / A unit b1422, and removes an extra frequency component for the intermediate frequency band. Next, the transmission RF unit b1423 converts (up-converts) the intermediate frequency signal into a high frequency signal, removes excess frequency components, amplifies the power, and transmits the amplified signal to the base station apparatus a1 via the transmission antenna b152. To do.

<CQI placement association switching process>
Hereinafter, an example of the CQI arrangement association switching process will be described. First, the CQI arrangement association information will be described.
FIG. 14 is a schematic diagram illustrating an example of CQI arrangement association according to the present embodiment. In this figure, the vertical axis represents time and the horizontal axis represents frequency. This figure is composed of three downlink component frequency bands 1 to 3 (element frequency band N = 3) of the downlink system bandwidth of FIG. 2, and the uplink system bandwidth of FIG. It is a figure in the case of being comprised from the uplink element frequency bands 1-3 of the element (element frequency band N = 3).
Further, this figure is a diagram when CQI placement association switching is performed based on the CQI placement association information of FIG. This figure is a diagram in the case where the CQI arrangement possible period T1 is T1 = 2 and the SR arrangement possible period T2 is T2 = 6 (the association switching period T _C is T _C = 6).

  For example, this figure shows that in the uplink subframe 1, the downlink element frequency band 1 CQI (downlink element frequency band 1) and the CQI arrangement control channel 1 (CQI1) are associated with each other. Also, this figure shows that, in uplink subframe 1, downlink element frequency band 2 CQI (downlink element frequency band 2) and CQI arrangement control channel 2 (CQI2) are associated with each other, and downlink element frequency band This indicates that 3CQI (downlink element frequency band 3) and CQI arrangement control channel 3 (CQI3) are associated with each other. In uplink subframe 1, an uplink element frequency band 1, that is, an uplink element frequency band 1 to which CQI arrangement control channel 1 is assigned is assigned an SR arrangement control channel (FIG. 5). FIG. 6).

FIG. 14 shows the same CQI as the CQI arrangement association in the uplink subframe 1 during the uplink subframes 1 to 6 (first period), that is, during the association switching period T _C (T _C = 6). Indicates that the layout association is performed.
FIG. 14 also shows that the downlink element frequency band 1 CQI and the CQI arrangement control channel 3 are associated with each other in the uplink subframes 7 to 12 (second period), and the downlink element frequency band 2 CQI and CQI arrangement are associated with each other. This indicates that the possible control channel 1 is associated, and the downlink element frequency band 3CQI and the CQI-arrangeable control channel 2 are associated.
FIG. 14 also shows that the downlink element frequency band 1 CQI and the CQI arrangement control channel 2 are associated with each other in the uplink subframes 13 to 18 (third period), and the downlink element frequency band 2 CQI and CQI arrangement are associated with each other. This indicates that the possible control channel 3 is associated, and the downlink element frequency band 3 CQI and the CQI-arrangeable control channel 1 are associated.
In uplink subframes 7 and 13, an SR arrangement control channel is allocated to uplink element frequency band 1 (see FIGS. 5 and 6).

As described above, the channel quality indicator association switching unit b121 switches the CQI arrangement association to the CQI arrangement association having a different association every association switching cycle T _C (T _C = 6).
The channel quality indicator association switching unit b121, for each correspondence switching period T _C, relative downlink component frequency band m to place the downlink component frequency band MCQI, CQI placeable control channel n is assigned Switch to the CQI allocation correspondence in which the uplink element frequency band n is cyclically shifted. Here, the cyclic frequency shift means that the number n of the uplink component frequency band n is increased by 1 (or may be decreased). When the maximum number N (N = 3) is increased by 1, the minimum number This is a shift of 1.
That is, the channel quality indicator association switching unit b121 is a correspondence between uplink component frequency band n and the downlink component frequency band MCQI, the after the correspondence switching period T _C, the downlink and uplink component frequency band n Switch to the association with the link element frequency band m + 1CQI.

As described above, the channel quality indicator association switching unit b121 performs the cyclic frequency shift for each uplink subframe to which the association switching cycle T _C , that is, the CQI allocation control channel and the SR allocation control channel are allocated. Switch to the associated CQI placement association. Accordingly, the mobile station apparatus b1 may be in the uplink component frequency band n unassigned SR deployable control channel, placing the correspondence switching period T _C different downlink component frequency band mCQI each.
Hereinafter, a case where CQI arrangement association switching is not performed and a case where CQI arrangement association switching is performed will be specifically described, and an effect obtained when CQI arrangement association switching is performed will be specifically described.

First, a case where CQI arrangement association switching is not performed will be described.
FIG. 15 is a schematic diagram illustrating CQI arrangement association when CQI arrangement association is not switched. This figure, like FIG. 14, is composed of three downlink element frequency bands 1 to 3 (element frequency band N = 3) of the downlink system bandwidth of FIG. 2, and the uplink system of FIG. It is a figure in case the band of a band is comprised from the uplink element frequency band 1-3 of 3 pieces (element frequency band N = 3). In this figure, the vertical axis represents time and the horizontal axis represents frequency.

In FIG. 15, in all uplink subframes, the downlink element frequency band 1 CQI and the CQI arrangement control channel 1 are associated with each other, the downlink element frequency band 2 CQI and the CQI arrangement control channel 2 are associated with each other, It shows that the downlink component frequency band 3CQI is associated with the CQI-arrangeable control channel 3.
In addition, this figure shows that in uplink subframes 1, 7, and 13, an SR arrangement control channel (SR1) is allocated to uplink element frequency band 1. That is, when the scheduling request SR is input from the uplink control data generation unit b122, the subcarrier mapping unit b1416 arranges the scheduling request SR in the uplink element frequency band 1 in the uplink subframes 1, 7, and 13. In this case, the subcarrier mapping unit b 1416 does not arrange the downlink element frequency band mCQI in the CQI arrangement control channel 1.

FIG. 15 shows that the scheduling request SR is arranged in the SR arrangement possible control channel, and the downlink channel quality indicator CQI is not arranged in the CQI arrangement control channel 1 (CQI1) indicated by oblique lines. Also, in this figure, since the downlink element frequency band 1 CQI (downlink element frequency band 1) indicated by hatching is associated with the CQI arrangement control channel 1 (CQI1) indicated by hatching, this CQI arrangement enabling control is performed. Indicates that it is not placed in channel 1. That is, the association switching in the period T _C, the downlink component only channel quality indicator CQI of the frequency band 1 is not transmitted, the downlink component frequency band 2 and 3 arranged downlink component frequency band 2,3CQI mobile station It is transmitted from the device b1 to the base station device a1.

Thus, if not switch CQI arrangement correspondence, the mobile station apparatus b1, for each correspondence switching period T _C, the downlink component frequency band CQI of the same downlink component frequency band number m1 (m1 = 1) That is, only the downlink element frequency band m1CQI is arranged and transmitted in the uplink element frequency band m1 to which no SR arrangement control channel is assigned. In other words, the mobile station apparatus b1, in correspondence switching period _{T C,} the downlink component frequency band m2CQI (m2 downlink component frequency band number other than m1; m2 = 2,3) to send only the downlink component frequency There is a possibility that the band m1CQI is not transmitted to the base station apparatus a1.
When the mobile station apparatus b1 transmits only the same downlink element frequency band m2CQI and does not transmit only the same downlink element frequency band m1CQI to the base station apparatus a1, the base station apparatus a1 receives the downlink element frequency band m2. Although the quality value can be detected, the reception quality value of the downlink element frequency band m1 cannot be detected. In this case, the base station apparatus a1 accurately performs only the setting process for the downlink element frequency band m1 performed based on the detected reception quality value, for example, frequency scheduling, adaptive modulation, and encoding for the downlink element frequency band m1. Transmission quality of the downlink component frequency band m1 is significantly deteriorated.
In particular, when the CQI arrangement possible period T1 and the SR arrangement possible period T2 have a relationship of T1 = k × T2 (k is a natural number), the mobile station apparatus b1 determines the downlink element frequency band m1CQI as the base station apparatus a1. May not be able to send at all. In this case, the base station apparatus a1 may not be able to detect the reception quality value of the downlink component frequency band m1 at all.

On the other hand, in this embodiment, the CQI arrangement association is switched. Hereinafter, the case where the mobile station apparatus b1 according to the present embodiment performs switching of CQI arrangement association will be described.
FIG. 16 is a schematic diagram illustrating CQI placement association when switching CQI placement association according to the present embodiment. This figure is a diagram in which the SR arrangement possible control channel (SR1) is added to FIG. In this figure, the vertical axis represents time and the horizontal axis represents frequency.
This figure shows that, in uplink subframes 1, 7, and 13, an SR arrangement control channel (SR1) is allocated to uplink element frequency band 1.

FIG. 16 shows that the scheduling request SR is arranged in the SR arrangement possible control channel, and the downlink channel quality indicator CQI is not arranged in the CQI arrangement control channel 1 (CQI1) indicated by hatching. Further, in this figure, any one of the downlink element frequency bands mCQI (downlink element frequency band m; m = 1, 2, 3) indicated by oblique lines is associated with the CQI arrangement control channel 1 (CQI1) indicated by oblique lines. This indicates that the associated downlink element frequency band mCQI is not allocated to the CQI allocation control channel 1.
Specifically, this figure, in correspondence switching period _{T C,} the downlink component frequency band mCQI associated is, downlink component frequency band 1CQI, downlink component frequency band 2CQI, downlink component frequency band 3CQI Indicates that they are not sent in order. Moreover, this figure, in correspondence switching period _{T C,} the downlink component frequency band 2,3CQI, downlink component frequency band 3,1CQI, in order of downlink component frequency band 1,2CQI, the downlink component frequency band mCQI It shows that it is transmitted from the mobile station apparatus b1 to the base station apparatus a1.

Thus, when performing switching of CQI arrangement correspondence, the mobile station apparatus b1, in the uplink component frequency band n unassigned SR deployable control channel, for each correspondence switching period T _C, the downlink component The downlink element frequency band CQI having a different frequency band number m, that is, the downlink element frequency band mCQI is transmitted to the base station apparatus a1. Thereby, base station apparatus a1 can detect the reception quality value of all the downlink element frequency bands m. In this case, the base station apparatus a1 can accurately perform the setting process for all downlink element frequency bands m based on the detected reception quality value, and does not switch the CQI arrangement association (FIG. 15). As described above, it is possible to prevent only the transmission quality of a certain downlink element frequency band m1 from being significantly deteriorated.

<Operation of Mobile Station Device b1>
Hereinafter, the operation of the mobile station apparatus b1 will be described.
FIG. 17 is a flowchart showing the operation of the mobile station apparatus b1 according to this embodiment.

(Step S101) The channel quality indicator association switching unit b121 determines whether or not the uplink subframe S is an uplink subframe that performs CQI allocation association switching. Specifically, when the CQI placement correspondence switching information indicates that the switching between the CQI placement correspondence, if it is an uplink subframe in each switching period T _C, in an uplink subframe for switching CQI placement association Judge that there is.
When it is determined that the channel quality indicator association switching unit b121 is an uplink subframe for switching CQI allocation association (YES), the process proceeds to step S102. On the other hand, if the channel quality indicator association switching unit b121 determines that it is not an uplink subframe that switches CQI allocation association (NO), the process proceeds to step S103.

(Step S102) The channel quality indicator association switching unit b121 performs switching of CQI arrangement association. Thereafter, the process proceeds to step S103.
(Step S103) The control unit b12 determines whether or not the uplink subframe S is an uplink subframe to which the SR arrangement control channel is assigned. Specifically, the control unit b12 performs the determination based on the SR arrangement possible cycle T2.
When the control unit b12 determines that the uplink subframe is assigned the SR-arrangeable control channel (YES), the process proceeds to step S104. On the other hand, when the control unit b12 determines that the uplink subframe is not assigned the SR-arrangeable control channel (NO), the process proceeds to step S105.
(Step S104) The control unit b12 and the subcarrier mapping unit b 1416 perform an SR substitutable uplink subframe arrangement process (FIG. 18) described later.

(Step S105) The control unit b12 determines whether or not the uplink subframe S is an uplink subframe to which a CQI arrangement control channel is assigned. Specifically, the control unit b12 performs the determination based on the CQI arrangement possible cycle T1.
When the control unit b12 determines that the uplink subframe is assigned the CQI-arrangeable control channel (YES), the process proceeds to step S106. On the other hand, when the control unit b12 determines that it is not an uplink subframe to which the CQI arrangement control channel is assigned (NO), the process proceeds to step S107.

(Step S106) The subcarrier mapping unit b 1416 arranges and transmits the downlink element frequency band mCQI on the CQI arrangement control channel n of the uplink subframe S.
(Step S107) When arranging other control data (for example, reception response ACK / NACK), the subcarrier mapping unit b 1416 arranges and transmits the control data in the control channel. Alternatively, the subcarrier mapping unit b 1416 does not arrange the control data when there is no control data to be transmitted or when the control channel of the control data to be transmitted is not assigned to the uplink subframe S.
After step S104, step S106, and step S107, the mobile station apparatus b1 ends the operation shown in FIG.

  FIG. 18 is a flowchart showing the operation of the uplink subframe arrangement processing capable of SR arrangement according to the present embodiment. This figure shows the process of step S104 of FIG.

(Step S201) The control unit b12 determines whether to request allocation of radio resources of the uplink shared data channel. Specifically, the control unit b12 determines to request the allocation of the radio resource of the uplink shared data channel when the amount of information data to be transmitted accumulated in the buffer b13 of the own device is equal to or greater than a predetermined threshold. To do.
When it determines with the control part b12 request | requiring allocation of the radio | wireless resource of an uplink shared data channel (YES), it progresses to step S202. On the other hand, when it determines with the control part b12 not requesting | assigning the radio | wireless resource of an uplink shared data channel (NO), it progresses to step S203.

(Step S202) The control unit b12 determines whether or not the uplink subframe S is an uplink subframe to which a CQI arrangement control channel is assigned. When the control unit b12 determines that the uplink subframe is assigned the CQI-arrangeable control channel (YES), the process proceeds to step S204. On the other hand, when the control unit b12 determines that it is not an uplink subframe to which the CQI arrangement control channel is assigned (NO), the process proceeds to step S207.
(Step S203) The control unit b12 determines whether or not the uplink subframe S is an uplink subframe to which a CQI arrangement control channel is assigned. When the control unit b12 determines that the uplink subframe is assigned the CQI-arrangeable control channel (YES), the process proceeds to step S208. On the other hand, when the control unit b12 determines that it is not an uplink subframe to which the CQI arrangement control channel is assigned (NO), the process proceeds to step S209.

(Step S204) The control unit b12 determines whether or not the uplink element frequency band n of the uplink subframe S is an uplink element frequency band to which the SR arrangement possible control channel is allocated. For example, the control unit b12 stores in advance the uplink element frequency band to which the SR-arrangeable control channel is allocated, and is the uplink element frequency band to which the SR-arrangeable control channel is allocated based on the stored information. Determine whether or not.
When the control unit b12 determines that the uplink component frequency band is assigned the SR-arrangeable control channel, the process proceeds to step S205. On the other hand, when the control unit b12 determines that it is not the uplink element frequency band to which the SR-arrangeable control channel is assigned, the process proceeds to step S206.

(Step S205) The subcarrier mapping unit b 1416 arranges and transmits the schedule request SR in the SR arrangement enable control channel in the uplink element frequency band n. In this case, the subcarrier mapping unit b 1416 does not arrange the downlink element frequency band mCQI in the uplink element frequency band n in which the schedule request SR is arranged in the uplink subframe S.

(Step S206) The subcarrier mapping unit b 1416 arranges and transmits the downlink element frequency band mCQI in the CQI arrangement control channel n in the uplink element frequency band n of the uplink subframe S.
(Step S207) The subcarrier mapping unit b 1416 arranges and transmits the schedule request SR in the SR arrangement enable control channel of the uplink subframe S.

(Step S208) The subcarrier mapping unit b 1416 arranges and transmits the downlink element frequency band mCQI in the CQI arrangement control channel n of the uplink subframe S. In this case, in the uplink subframe S, the subcarrier mapping unit b 1416 does not arrange the schedule request SR in the uplink element frequency band n in which the downlink element frequency band mCQI is arranged.

(Step S209) When arranging other control data (for example, reception response ACK / NACK), the subcarrier mapping unit b 1416 arranges and transmits the control data in the control channel. Alternatively, the subcarrier mapping unit b 1416 does not arrange the control data when there is no control data to be transmitted or when the control channel of the control data to be transmitted is not assigned to the uplink subframe S.
After steps S205 to S209, the mobile station apparatus b1 ends the operation shown in FIG.

Thus, according to this embodiment, the wireless communication system 1, the mobile station apparatus b1 is CQI arranged correspondence information, correspondence is different CQI arranged correspondence in the course before and after the association switching period T _C of a predetermined since determining the information, the mobile station apparatus b1 transmits by placing the channel quality indicator indicating reception quality of the uplink component frequency band n in association switching period T _C different downlink component frequency band m before and after the course of Can do. As a result, even when the channel quality indicator CQI cannot be transmitted due to the scheduling request SR being arranged in one uplink element frequency band n or the like, before and after the lapse of the switching period associated with the other uplink element frequency band n Channel quality indicators indicating reception qualities of different downlink component frequency bands m can be arranged and transmitted, and the base station apparatus a1 can perform transmission based on the channel quality indicators of all downlink component frequency bands m. Reliable frequency scheduling, adaptive modulation, and encoding can be performed for the downstream element frequency band m.

  Moreover, according to this embodiment, the radio | wireless communications system 1 can control whether the base station apparatus a1 switches CQI arrangement | positioning association, for example, communication with the base station apparatus a1 and the mobile station apparatus b1 When the number of downlink component frequency bands used for 1 is 1, it is possible to control so as not to switch the CQI arrangement association. As a result, the radio communication system 1 can prevent the channel quality indicator of the downlink element frequency band m not used for communication from being transmitted by switching the CQI arrangement association, and the downlink element frequency used for communication. It is possible to prevent the transmission efficiency of the channel quality index of the band m from being lowered.

Further, according to this embodiment, the wireless communication system 1, since the base station apparatus a1 to generate information indicating the switching period T _C correspond, without calculating the correspondence switching period T _C in the mobile station apparatus b1 Channel quality indicator association can be switched reliably, and processing performed by the mobile station apparatus b1 can be reduced.

  Further, according to the present embodiment, the radio communication system 1 includes the uplink element frequency band and time band to which the mobile station apparatus b1 is assigned the CQI arrangement control channel, and the uplink to which the SR arrangement control channel is assigned. When the element frequency band and the time band are the same uplink element frequency band and time band, the channel quality index CQI is not arranged in the radio resource of the uplink element frequency band and the time band. It can be transmitted promptly and reliably, and loss of information data due to information data overflow in the mobile station apparatus can be prevented.

  According to the above configuration, when the mobile station apparatus b1 generates the scheduling request SR, the radio communication system 1 allocates the uplink element frequency band and time band to which the CQI allocation control channel is allocated and the SR allocation control channel. If the uplink element frequency band and the time band are the same uplink element frequency band and the time band, the scheduling request SR generated in the radio resource of the uplink element frequency band and the time band is arranged, and the channel quality Since the index CQI is not arranged, the scheduling request SR can be transmitted promptly and reliably, and loss of information data due to information data overflow in the mobile station apparatus can be prevented.

In the above embodiment, the base station apparatus a1 has been set the correspondence switching period T _C to the least common multiple of the CQI placeable period T1 and SR placeable period T2, the present invention is not limited to this, other It may be a value.

Moreover, in the said embodiment, although the example in case the number N of element frequency bands was N = 3 was demonstrated, this invention is not limited to this.
For example, the base station apparatus a1 and the mobile station apparatus b1 may store CQI arrangement association information illustrated in FIG. 19 for an arbitrary number of element frequency bands N.

FIG. 19 is a diagram showing another example of CQI arrangement association information according to the present embodiment.
As shown in the figure, the CQI placement association information is data in a two-dimensional tabular format consisting of rows and columns, and includes CQI placement control channel, first cycle, second cycle,..., And Nth cycle. It has a column for each item. The first period, the second period, ..., and items of the N cycle, respectively, the first period of the correspondence switching period T _C of a wireless frame, the second period, ..., and the In the N period, the downlink element frequency band CQI corresponding to the control channel capable of CQI arrangement is shown. Here, the z-th cycle is expressed by the above formula (1).

For example, FIG. 19 shows downlink element frequency bands 1, 2,..., N− for the CQI arrangement control channels 1, 2,. 1 indicates that NCQI is associated. FIG. 19 shows downlink element frequency bands 2, 3,..., N, respectively, for the control channels 1, 2,. Indicates that 1 CQI is associated.
Thus, CQI arranged correspondence information indicates that the CQI placement correspondence is switched every correspondence switching period T _C.

  Also, for example, CQI arrangement in which CQI arrangement control channel n is associated with downlink element frequency band yCQI arranged in CQI arrangement control channel n using y shown in the following equation (2) Association may be used.

However, (A mod B) represents the remainder obtained by dividing A by B, t is s / T _C is equal to or less than a maximum integer, s is an uplink sub-frame number, m is the number of the downlink component frequency band, N represents Indicates the number of element frequency bands.

In the above embodiment, the cyclic frequency shift, the association between the uplink component frequency band n and the downlink component frequency band MCQI, the after the correspondence switching period T _C, the downlink and uplink component frequency band n Although the case of switching to the association with the link element frequency band m + 1CQI has been described, the present invention is not limited to this, and the association may be switched to the association between the uplink element frequency band n and the downlink element frequency band m-1CQI.

  FIG. 20 is a diagram showing another example of CQI arrangement association information according to the present embodiment. As shown in the figure, the CQI placement association information is data in a two-dimensional tabular format consisting of rows and columns, and includes CQI placement control channel, first cycle, second cycle,..., And Nth cycle. It has a column for each item. For example, FIG. 20 shows downlink element frequency bands 1, 2,..., N− for the CQI arrangement control channels 1, 2,. 1 indicates that NCQI is associated. FIG. 20 shows downlink element frequency bands N, 1,..., N− for the CQI arrangement control channels 1, 2,. 2, indicates that N-1CQI is associated.

  Moreover, in the said embodiment, although the number of the downlink element frequency bands and the number of the uplink element frequency bands were the same N, this invention is not restricted to this, A different value may be sufficient. Hereinafter, an example of CQI arrangement association information in this case will be described, where the number of downlink component frequency bands is M and the number of uplink component frequency bands is N.

First, the case where M is larger than N (M = c + N−1; c is a natural number) will be described.
FIG. 21 is a diagram showing another example of CQI arrangement association information according to the present embodiment. As shown in the figure, the CQI arrangement association information is data in a two-dimensional tabular format consisting of rows and columns, and includes CQI arrangement control channel, first period, second period,..., And M period. It has a column for each item. For example, FIG. 21 shows downlink element frequency bands 1, 2,..., N− for the CQI arrangement control channels 1, 2,. 1 indicates that NCQI is associated. FIG. 21 illustrates downlink element frequency bands c, c + 1,..., C + N− for CQI-arrangeable control channels 1, 2,. 2, c + N-1CQI is associated.

Next, a case where M is smaller than N will be described.
FIG. 22 is a diagram showing another example of CQI arrangement association information according to the present embodiment. As shown in the figure, the CQI arrangement association information is data in a two-dimensional tabular format consisting of rows and columns, and includes CQI arrangement control channel, first period, second period,..., And M period. It has a column for each item. For example, FIG. 22 shows downlink element frequency bands 1 and 2 for CQI-arrangeable control channels 1, 2,..., M, M + 1,. ,..., M, 1,... NM-1, N-MCQI are associated with each other. Also, FIG. 22 shows downlink element frequency bands 2 and 3 for the CQI-arrangeable control channels 1, 2,..., M, M + 1,. ,..., 1, 2,..., NM, NM + 1CQI are associated with each other.

In the above embodiment, the mobile station apparatus b1 has been explained a case of switching the association CQI arrangement correspondence with every switching period T _C is the cyclic frequency shift, the present invention is not limited thereto. For example, a random number based on any or all of an uplink subframe number, an uplink element frequency band n to which a CQI arrangement control channel is assigned, and a downlink element frequency band m in which the arranged channel quality indicator CQI indicates reception quality the CQI placement association was determined using a function may be switched in correspondence CQI arrangement correspondence determined for each switching period T _C.
Thus, the base station apparatus a1 is in the uplink element frequency band n in which the SR-arrangeable control channel is arranged and in the uplink element frequency band n of the uplink subframe in which the SR-arrangeable control channel is not arranged. as to position different downlink component frequency band MCQI, may be set or CQI placement association determination of correspondence switching period T _C.

In the above embodiment, the base station apparatus a1 or the mobile station apparatus b1 may store the CQI arrangement association information (FIG. 8) at the time of manufacturing the apparatus, or update and store it by an update process after manufacturing. Alternatively, when the base station apparatus a1 and the mobile station apparatus b1 communicate with each other, the CQI arrangement association information stored in one apparatus is notified to the other apparatus and stored in both apparatuses. Good.
In the above-described embodiment, a case has been described in which CQI placement association switching is performed based on CQI placement association information (FIG. 8) stored in advance by both devices, but the present invention is not limited to this. For example, both devices may store Equation (2), and switch the CQI arrangement association by arranging the downlink element frequency band mCQI based on Equation (2).

  Further, in the above embodiment, the subcarrier mapping unit b 1416, when the uplink control data generation unit b122 generates the scheduling request SR, the uplink element frequency band n and the uplink subframe to which the CQI allocation control channel is assigned. And the uplink element frequency band n and the uplink subframe to which the SR-arrangeable control channel is allocated are the same uplink element frequency band n and uplink subframe, The configuration in which the channel quality indicator CQI is not arranged in the radio resource of the link subframe has been described. However, the present invention is not limited to this, and the subcarrier mapping unit b1416 (transmission processing unit b14) is configured such that the uplink element frequency band n and the uplink subframe to which the CQI allocation control channel is allocated, and the SR allocation control channel. Are the same uplink element frequency band n and uplink subframe, the radio resource of the uplink element frequency band n and uplink subframe is assigned to the uplink element frequency band n and uplink subframe. May be configured such that the channel quality indicator CQI is not arranged.

  In addition, the base station apparatus a1 and the mobile station apparatus b1 unit in the above-described embodiment, for example, the uplink control channel arrangement determination unit a121, the uplink control channel detection control unit a131, the channel quality indicator association switching unit b121, the uplink control The data generation unit b122, the reception quality measurement unit b1117, the downlink shared data channel decoding unit b113, the uplink control channel processing unit b1415, and the subcarrier mapping unit b1416 may be realized by a computer. In that case, the program for realizing the control function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by a computer system and executed. The “computer system” here is a computer system built in the base station device a1 and the mobile station device b1, and 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. Furthermore, the “computer-readable recording medium” is a medium that dynamically holds a program for a short time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, In such a case, a volatile memory inside a computer system serving as a server or a client may be included, and the one holding a program for a certain period of time may be included. 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.

  As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to the above, and various design changes and the like can be made without departing from the scope of the present invention. It is possible to

  DESCRIPTION OF SYMBOLS 1 ... Radio | wireless communications system, BS1, a1 ... Base station apparatus, UE1, UE2, b1 ... Mobile station apparatus, UE3 ... Mobile station apparatus, a11 ... Reception processing part, a12 ... Radio resource control unit, a13 ... control unit, a14 ... transmission processing unit, a121 ... uplink control channel arrangement determination unit, a131 ... uplink control channel detection control unit, a151 ... transmission antenna , A152 ... receiving antenna, a141-1 to a141-i ... downlink shared data channel processing unit, a142-1 to a142-j ... downlink control channel processing unit, a1431 ... downlink pilot Channel processing unit, a1432 ... multiplexing unit, a1433 ... IFFT unit, a1434 ... GI insertion unit, a1435 ... D / A unit, transmission RF ... a1436, a1411 ... turbo code part, a1412 ... data modulation part, a1421 ... convolutional code part, a1422 ... QPSK modulation part, a1111 ... reception RF part, a1112 ... A / D section, a1113 ... element frequency band separation section, a11-1 to a11-N ... reception processing section for each uplink element frequency band, a1121 ... symbol timing detection section, a1122 ... GI removal section A1123: FFT unit, a1124 ... subcarrier demapping unit, a1125 ... propagation path estimation unit, a1126 ... propagation path equalization unit, a1127 ... uplink control channel detection unit, a1128 ..Channel equalization unit, a1129 ... IDFT unit, data demodulation unit ... a1130, a1131 ... turbo decoding unit, DESCRIPTION OF SYMBOLS 11 ... Reception processing part, b12 ... Control part, b13 ... Buffer, b14 ... Transmission processing part, b121 ... Channel quality indicator association switching part, b122 ... Uplink control data generation B151 ... receiving antenna, b152 ... transmitting antenna, b1111 ... receiving RF unit, b1112 ... A / D unit, b1113 ... symbol timing detecting unit, b1114 ... GI removing unit, b1115: FFT unit, b1116: demultiplexing unit, b1117: reception quality measurement unit, b1118 ... propagation path estimation unit, b1119 ... propagation path compensation unit, b1120 ... propagation path compensation unit , B113 ... downlink shared data channel decoding unit b113 ... downlink control channel decoding unit, b1131 ... data demodulation unit, b1132 ..Turbo decoding unit, b1141... QPSK demodulating unit, b1142... Viterbi decoder unit, b141-1 to b141-N... Transmission processing unit for each uplink component frequency band, b1421. Part, b1422 ... D / A part, b1423 ... transmission RF part, b1411 ... turbo coding part, b1412 ... data modulation part, b1413 ... DFT part, b1414 ... uplink pilot channel Processing unit, b1415 ... Uplink control channel processing unit, b1416 ... Subcarrier mapping unit, b1417 ... IFFT unit, b1418 ... GI insertion unit

Claims (25)

A mobile station apparatus that receives a transmission signal from a base station apparatus using a plurality of downlink element frequency bands that are predetermined frequency bandwidth bands, and an uplink element frequency that is a predetermined frequency bandwidth band A base station device that receives a transmission signal from the mobile station device using a plurality of bands, and a wireless communication system comprising:
The mobile station device
For each of the downlink component frequency bands, an uplink control data generation unit that generates a channel quality indicator indicating reception quality of the downlink component frequency band;
The channel quality indicator association information indicating the association between each of the uplink component frequency bands and the channel quality indicator of each downlink component frequency band generated by the uplink control data generation unit is set to a predetermined association switching period. A channel quality indicator association switching unit that determines channel quality indicator association information having different associations before and after progress;
The channel quality indicator for each downlink element frequency band generated by the uplink control data generation unit is assigned to the uplink element frequency band associated with the channel quality indicator association information determined by the channel quality indicator association switching unit. A transmission processing unit arranged and transmitted to the base station device;
A wireless communication system comprising: The base station device
An uplink control channel arrangement determining unit that generates channel quality indicator arrangement association switching information indicating whether to switch the channel quality indicator association;
A transmission processing unit that transmits the channel quality indicator allocation association switching information generated by the uplink control channel allocation determining unit to the mobile station device;
With
The channel quality indicator association switching unit, when the channel quality indicator arrangement association switching information received from the base station apparatus indicates that the channel quality indicator association is switched, the channel quality indicator associations with different associations. The wireless communication system according to claim 1, wherein the information is determined as information.   The channel quality indicator association switching unit, when the channel quality indicator arrangement association switching information received from the base station apparatus indicates that the channel quality indicator association is not switched, elapse of a predetermined association switching cycle The wireless communication system according to claim 2, wherein the association is determined to be the same channel quality indicator association information before and after. The base station device
An uplink control channel arrangement determining unit that generates channel quality indicator arrangement association switching information indicating the association switching period;
A transmission processing unit that transmits the channel quality indicator allocation association switching information generated by the uplink control channel allocation determining unit to the mobile station device;
With
The channel quality indicator association switching unit determines the channel quality indicator association information having different associations before and after the association switching cycle indicated by the channel quality indicator arrangement association switching information received from the base station apparatus. The wireless communication system according to claim 1.   The channel quality indicator association switching unit determines the channel quality indicator association information using the association switching cycle as a cycle that is an integral multiple of a radio resource allocation cycle in which the channel quality indicator can be arranged. The wireless communication system according to claim 1. The uplink control data generation unit generates a scheduling request for requesting the base station apparatus to allocate radio resources to arrange and transmit information data,
The transmission processing unit includes the uplink element frequency band and time band to which the radio resource capable of arranging the channel quality indicator is allocated, and the uplink element frequency band to which the radio resource capable of arranging the scheduling request is allocated. The channel quality indicator is not arranged in radio resources of the uplink element frequency band and the time band when the same and the time band are the same uplink element frequency band and time band. The wireless communication system described. The uplink control data generation unit generates a scheduling request for requesting the base station apparatus to allocate radio resources to arrange and transmit information data,
When the uplink control data generation unit generates the scheduling request, the transmission processing unit of the mobile station apparatus includes the uplink element frequency band and time band to which radio resources to which the channel quality indicator can be arranged are allocated. When the uplink element frequency band and the time band to which the radio resource capable of arranging the scheduling request is allocated are the same uplink element frequency band and the time band, the radio in the uplink element frequency band and the time band The radio communication system according to claim 1, wherein the scheduling request generated by the uplink control data generation unit is allocated to a resource, and the channel quality indicator is not allocated.   The channel quality indicator association switching unit determines the channel quality indicator association information by setting the association switching cycle as a cycle that is an integral multiple of a radio resource allocation cycle in which a scheduling request can be arranged. The radio | wireless communications system of Claim 6 or Claim 7.   The channel quality indicator association switching unit includes channel quality indicator association information indicating association between an nth uplink element frequency band and a channel quality indicator of the mth downlink element frequency band. Channel quality indicator association information indicating the association between the nth uplink component frequency band n and the channel quality indicator of either the m + 1th or m−1th downlink component frequency band after the switching period has elapsed. The wireless communication system according to claim 1, wherein the wireless communication system is determined as follows. Receiving a transmission signal from the base station apparatus using a plurality of downlink element frequency bands that are predetermined frequency bandwidth bands, and using a plurality of uplink element frequency bands that are predetermined frequency bandwidth bands In the mobile station device that transmits the transmission signal to the base station device,
For each of the downlink component frequency bands, an uplink control data generation unit that generates a channel quality indicator indicating reception quality of the downlink component frequency band;
The channel quality indicator association information indicating the association between each of the uplink component frequency bands and the channel quality indicator of each downlink component frequency band generated by the uplink control data generation unit is set to a predetermined association switching period. A channel quality indicator association switching unit that determines channel quality indicator association information having different associations before and after progress;
The channel quality indicator for each downlink element frequency band generated by the uplink control data generation unit is assigned to the uplink element frequency band associated with the channel quality indicator association information determined by the channel quality indicator association switching unit. A transmission processing unit arranged and transmitted to the base station device;
A mobile station apparatus comprising: The mobile station apparatus receives channel quality indicator arrangement association switching information indicating whether to switch the channel quality indicator association from the base station device,
The channel quality indicator association switching unit, when the channel quality indicator arrangement association switching information received from the base station apparatus indicates that the channel quality indicator association is to be switched, the channel quality indicator associations having different associations. The mobile station apparatus according to claim 10, wherein the information is determined as information.   The channel quality indicator association switching unit, when the channel quality indicator arrangement association switching information received from the base station apparatus indicates that the channel quality indicator association is not switched, elapse of a predetermined association switching cycle The mobile station apparatus according to claim 11, wherein the association is determined to be the same channel quality indicator association information before and after. The mobile station apparatus receives channel quality indicator arrangement association switching information indicating the association switching period from the base station apparatus,
The channel quality indicator association switching unit determines the channel quality indicator association information having different associations before and after the association switching cycle indicated by the channel quality indicator arrangement association switching information received from the base station apparatus. The mobile station apparatus according to claim 10.   The channel quality indicator association switching unit determines the channel quality indicator association information using the association switching cycle as a cycle that is an integral multiple of a radio resource allocation cycle in which the channel quality indicator can be arranged. The mobile station apparatus according to claim 10. The uplink control data generation unit generates a scheduling request for requesting the base station apparatus to allocate radio resources to arrange and transmit information data,
The transmission processing unit includes the uplink element frequency band and time band to which the radio resource capable of arranging the channel quality indicator is allocated, and the uplink element frequency band to which the radio resource capable of arranging the scheduling request is allocated. The channel quality indicator is not arranged in radio resources of the uplink element frequency band and the time band when the same and the time band are the same uplink element frequency band and time band. The mobile station apparatus as described. The uplink control data generation unit generates a scheduling request for requesting the base station apparatus to allocate radio resources to arrange and transmit information data,
When the uplink control data generation unit generates the scheduling request, the transmission processing unit of the mobile station apparatus includes the uplink element frequency band and time band to which radio resources to which the channel quality indicator can be arranged are allocated. When the uplink element frequency band and the time band to which the radio resource capable of arranging the scheduling request is allocated are the same uplink element frequency band and the time band, the radio in the uplink element frequency band and the time band The mobile station apparatus according to claim 10, wherein the scheduling request generated by the uplink control data generation unit is allocated to a resource, and the channel quality indicator is not allocated.   The channel quality indicator association switching unit determines the channel quality indicator association information by setting the association switching cycle as a cycle that is an integral multiple of a radio resource allocation cycle in which a scheduling request can be arranged. The mobile station apparatus according to claim 15 or claim 16.   The channel quality indicator association switching unit includes channel quality indicator association information indicating association between an nth uplink element frequency band and a channel quality indicator of the mth downlink element frequency band. Channel quality indicator association information indicating the association between the nth uplink component frequency band n and the channel quality indicator of either the m + 1th or m−1th downlink component frequency band after the switching period has elapsed. The mobile station apparatus according to claim 10, wherein the mobile station apparatus is determined as follows. A transmission signal is transmitted to the mobile station apparatus using a plurality of downlink element frequency bands that are predetermined frequency bandwidth bands, and a plurality of uplink element frequency bands that are predetermined frequency bandwidth bands are used. In the base station device that receives the transmission signal from the mobile station device,
Uplink for generating channel quality indicator allocation association switching information for controlling association between each uplink component frequency band and a channel quality indicator indicating reception quality of each downlink component frequency band and transmitting the channel quality indicator allocation association switching information to the mobile station apparatus A base station apparatus comprising a link control channel arrangement determining unit. The uplink control channel allocation determining unit generates channel quality indicator allocation association switching information indicating whether to switch the channel quality indicator association;
The base station apparatus according to claim 19, further comprising: a transmission processing unit that transmits the channel quality indicator arrangement association switching information generated by the uplink control channel arrangement determining unit to the mobile station apparatus. The uplink control channel arrangement determining unit generates information indicating an association switching period for determining the channel quality indicator association to be different from before and after the channel quality indicator association is different,
The base station apparatus according to claim 19, further comprising: a transmission processing unit that transmits the channel quality indicator arrangement association switching information generated by the uplink control channel arrangement determining unit to the mobile station apparatus. Receiving a transmission signal from the base station apparatus using a plurality of downlink element frequency bands that are predetermined frequency bandwidth bands, and using a plurality of uplink element frequency bands that are predetermined frequency bandwidth bands In a communication control method in a mobile station apparatus that transmits a transmission signal to a base station apparatus,
A first step in which the mobile station device generates a channel quality indicator indicating reception quality of the downlink component frequency band for each of the downlink component frequency bands;
The channel quality indicator association information indicating the association between each of the uplink component frequency bands and the channel quality indicator of each downlink component frequency band generated in the first process is set to the passage of a predetermined association switching cycle. A second step of determining channel quality indicator association information having different associations before and after;
Channel quality indicators for each downlink component frequency band generated in the first step are arranged in the uplink component frequency bands associated with the channel quality indicator association information determined in the second step. A third process of transmitting to the base station device;
A communication control method characterized by comprising: A transmission signal is transmitted to the mobile station apparatus using a plurality of downlink element frequency bands that are predetermined frequency bandwidth bands, and a plurality of uplink element frequency bands that are predetermined frequency bandwidth bands are used. A communication control method in a base station apparatus that receives a transmission signal from the mobile station apparatus,
The base station apparatus generates channel quality indicator arrangement association switching information for controlling association between each uplink component frequency band and a channel quality indicator indicating reception quality of each downlink component frequency band to generate the movement A communication control method comprising a step of transmitting to a station device. Receiving a transmission signal from the base station apparatus using a plurality of downlink element frequency bands that are predetermined frequency bandwidth bands, and using a plurality of uplink element frequency bands that are predetermined frequency bandwidth bands A mobile station device computer that transmits a transmission signal to the base station device,
Uplink control data generating means for generating a channel quality indicator indicating reception quality of the downlink element frequency band for each of the downlink element frequency bands,
Channel quality indicator association information indicating association between each of the uplink component frequency bands and the channel quality indicator of each downlink component frequency band generated by the uplink control data generating means is set to a predetermined association switching cycle. Channel quality indicator association switching means for determining channel quality indicator association information with different association before and after elapse of
The uplink element frequency associated with the channel quality indicator association information determined by the channel quality indicator association switching unit, with the channel quality indicator of each downlink element frequency band generated by the uplink control data generating unit Transmission processing means arranged in a band and transmitting to the base station device;
Communication control program to function as. A transmission signal is transmitted to the mobile station apparatus using a plurality of downlink element frequency bands that are predetermined frequency bandwidth bands, and a plurality of uplink element frequency bands that are predetermined frequency bandwidth bands are used. A computer of a base station device that receives a transmission signal from the mobile station device,
Uplink for generating channel quality indicator allocation association switching information for controlling association between each uplink component frequency band and a channel quality indicator indicating reception quality of each downlink component frequency band and transmitting the channel quality indicator allocation association switching information to the mobile station apparatus A communication control program that functions as a link control channel arrangement determining means.

Images