JP2012204910A - Communication system, base station device, mobile station device, and method and integrated circuit for managing throughput of mobile station device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication system, a base station device, a mobile station device, and method and integrated circuit for managing throughput of the mobile station device which are capable of efficiently reporting and managing the throughput of the mobile station device.SOLUTION: The mobile station device reports to the base station device the throughput in each frequency band which the station can receive and in each combination of the frequency bands. When the base station device reports to an exchange the throughput reported from the mobile station device, the base station device reports to the exchange a part of the throughput.

Description

  The present invention relates to a communication system, a base station apparatus, a mobile station apparatus, a communication method, and an integrated circuit, and more particularly to a communication method in which a mobile station apparatus notifies a base station apparatus of its own communication processing capability.

  Evolved which realized high-speed communication by adopting OFDM (Orthogonal Frequency-Division Multiplexing) communication method and flexible scheduling of predetermined frequency and time unit called resource block in 3GPP (3rd Generation Partnership Project) which is a standardization project Universal Terrestrial Radio Access (hereinafter referred to as EUTRA) has been studied, and further development of Advanced EUTRA (also referred to as LTE-Advanced) is being promoted.

  In Advanced EUTRA, Carrier Aggregation has been proposed as a technology capable of higher-speed data transmission while maintaining compatibility with EUTRA. Carrier aggregation is a method in which data of a transmitting device transmitted in a plurality of different frequency bands (also referred to as carrier frequency and component carrier) is received by receiving devices corresponding to different frequency bands, respectively. It is a technology that improves the rate. In addition, carrier aggregation can divide one frequency band into a plurality of frequency resources to be component carriers.

  In the following, a receiving device in downlink transmission is referred to as a mobile station device, a transmitting device is referred to as a base station device, a receiving device in uplink transmission is a base station device, and a transmitting device in uplink transmission. Are described as mobile station apparatuses, but the scope of application of the present invention need not be limited to these apparatuses.

  Component carriers used in Advanced EUTRA carrier aggregation are classified into primary component carriers (PCCs) and secondary component carriers (SCCs), and mobile station devices are connected by downlink PCCs. A cell is called a primary cell (PCell: Primary Cell), and a cell connected by downlink SCC is called a secondary cell (SCell: Secondary Cell). The primary cell always includes an uplink component carrier, but may not be included in the secondary cell.

  In EUTRA and Advanced EUTRA, use of MIMO (Multiple Input Multiple Output) technology has been proposed. In the MIMO technology, transmission data is divided into a plurality of signals (streams) in advance in a transmitting apparatus, and these are simultaneously transmitted from a plurality of antennas in the same frequency band, and the divided signals are transmitted using a plurality of antennas in a receiving apparatus. Is a technique for improving the data rate by simultaneously receiving and combining.

  Since this method is equivalent to generating a plurality of independent spatial channels by performing signal processing such as the least square error method (MMSE), it is called spatial multiplexing or SM (Spatial Multiplexing). This spatial channel is also called a spatial layer from the image of dividing a radio propagation path into several layers and transmitting radio signals in parallel in each layer.

  Here, the number of carrier aggregation component carriers and the number of MIMO spatial layers that can be supported by the mobile station apparatus may differ depending on the number of receivers and antennas of the mobile station apparatus and the frequency band to be used.

  For example, assuming that the mobile station apparatus includes a receiver 1 and a receiver 2 each having two antennas, when performing downlink communication only in the frequency band 1 as shown in FIG. The receiver 1 and the receiver 2 are used in the frequency band 1, and the number of component carriers is 4 and the number of MIMO spatial layers is 4, but as shown in FIG. 11B, the frequency band 1 and the frequency band 2 are supported. Are simultaneously used, the receiver 2 is assigned to the frequency band 2, so that the number of component carriers in the frequency band 1 is 4, the number of MIMO spatial layers is 2, the number of component carriers in the frequency 2 is 4, and the number of MIMO The number of spatial layers will support 2.

  For this reason, a mechanism has been proposed in which the mobile station apparatus notifies the base station apparatus of information (processing capability) such as the number of component carriers and the number of spatial layers supported for each frequency band to be used and combinations of frequency bands (non-capable). Patent Document 1).

  Note that the third generation base station apparatus defined by 3GPP is referred to as a Node B (NodeB), and the base station apparatus in EUTRA and Advanced EUTRA is referred to as an eNodeB (eNodeB). The base station apparatus manages a cell that is an area where the mobile station apparatus can communicate, and the cell is also referred to as a femto cell, a pico cell, or a nano cell depending on the size of the area that can communicate with the mobile station apparatus.

  In addition, when a mobile station device can communicate with a certain base station device, the cell of the base station device is a serving cell of the mobile station device, and other base station devices or cells of different frequencies are referred to as neighboring cells. Is done.

R2-110604, RAN WG2, 3GPP TSG-RAN WG2 Meeting # 72bis, Dublin, Ireland, 17th-21th January 2011 TS 36.300, V10.2.0, 3GPP TSG-RAN E-UTRA and E-UTRAN Overall description

  As described above, Non-Patent Document 1 proposes to notify the base station apparatus of the processing capability for each frequency band and each combination of frequency bands supported by the mobile station apparatus. Further, the processing capability notified to the base station apparatus is notified from the base station apparatus to the switching center (MME), is maintained during the connection state with the MME (ECM_Connected), and is updated if the contents are changed. In order to notify the base station device from the mobile station device anew by notifying the base station device that does not hold the information of the processing capability held by the MME to the base station device during communication with the mobile station device. It is possible to suppress the use of radio resources.

  However, holding all the processing capabilities of all combinations supported by the mobile station apparatus in the MME consumes a large amount of memory, and the frequency band supported by the base station apparatus may be different for each base station apparatus. It is inefficient to get all the information.

  In view of the above problems, an object of the present invention is to provide a communication system, a base station apparatus, a mobile station apparatus, a transmission method, and an integrated circuit that can efficiently notify and manage the processing capability of the mobile station apparatus.

  (1) In order to achieve the above object, the present invention takes the following measures. That is, the communication system of the present invention is a communication system including a mobile station apparatus, a base station apparatus, and an exchange station that manages the mobile station apparatus, and the mobile station apparatus can transmit and receive by itself. The base station apparatus is notified of the processing capacity for each frequency band and each combination of frequency bands, and the base station apparatus performs the processing when the processing capacity notified from the mobile station apparatus is notified to the exchange. A part of the capability is notified to the exchange.

  (2) Further, the communication system of the present invention is a communication system including a mobile station device, a base station device, and an exchange station that manages the mobile station device, and the base station device is a cell of its own station. When communication to a mobile station apparatus in a standby state occurs, the processing capacity of the mobile station apparatus is acquired and held from the exchange, and the base station apparatus is not included in the acquired processing capacity When there is a possibility of performing wireless communication with the mobile station apparatus using a combination of frequency bands, the mobile station apparatus is inquired about additional processing capability, and the mobile station apparatus inquires from the base station apparatus. On the other hand, a target to be notified of addition is extracted from the processing capability of the own station and notified to the base station apparatus.

  (3) In the communication system of the present invention, the processing capability notified from the exchange is a processing capability for each frequency band that can be transmitted and received by the mobile station device, and is added to the mobile station device. The processing capacity to be inquired is a processing capacity for each combination of frequency bands that can be transmitted and received by the mobile station apparatus.

  (4) Further, the communication system of the present invention is a communication system including a mobile station device, a base station device, and an exchange station that manages the mobile station device, and the base station device is a cell of its own station. When communication to the mobile station apparatus in the standby state occurs, the processing capacity of the mobile station apparatus is acquired and held from the exchange, and the mobile station apparatus is based on a combination of frequency bands from the base station apparatus. When the wireless communication is set, when the inquiry about the additional processing capacity is made from the base station apparatus, or which processing capacity is notified from the base station apparatus to the exchange station, the mobile station apparatus In the case where wireless communication of a combination of frequency bands that is known and is not included in the known processing capability is set in the local station, the base station device is notified of the processing capability for the combination. To.

  (5) Moreover, the base station apparatus of the present invention is a base station apparatus that performs radio communication with a mobile station apparatus, and the base station apparatus can transmit and receive a frequency band and a frequency band that can be transmitted and received by the mobile station apparatus. A mobile station device processing capability information management unit that acquires and manages the processing capability for each combination from the mobile station device or an exchange that manages the mobile station device, and the mobile station device processing capability information management unit includes: When there is a possibility of performing wireless communication with the mobile station apparatus using a combination of frequency bands not included in the retained processing capacity, the mobile station apparatus is inquired about additional processing capacity.

  (6) Moreover, the base station apparatus of the present invention is a base station apparatus that performs radio communication with a mobile station apparatus, and the base station apparatus can transmit and receive a frequency band and a frequency band that can be transmitted and received by the mobile station apparatus. A mobile station device processing capability information management unit that acquires and manages the processing capability for each combination from the mobile station device or an exchange that manages the mobile station device, and the mobile station device processing capability information management unit includes: In the case where radio communication using a combination of frequency bands not included in the held processing capability is set for the mobile station device, the mobile station device is inquired about additional processing capability and notified from the mobile station device It is characterized by retaining the processing capability.

  (7) Moreover, the mobile station apparatus of the present invention is a mobile station apparatus that performs radio communication with the base station apparatus, and the mobile station apparatus has a frequency band and a frequency band that the local station can transmit and receive. A processing capability information holding unit that manages the processing capability for each combination separately into basic information and additional information, and when the request for addition notification is included in the message for inquiring processing capability from the base station device, the addition Information is notified to the base station apparatus.

  (8) Also, the mobile station apparatus processing capacity management method of the present invention is a mobile station apparatus processing capacity management method in a communication system comprising a mobile station apparatus, a base station apparatus, and an exchange station that manages the mobile station apparatus. The base station device acquiring and holding the processing capability of the mobile station device from the exchange when communication to a mobile station device in a standby state occurs in the cell of the base station device; When there is a possibility of performing wireless communication with the mobile station apparatus with a combination of frequency bands not included in the acquired processing capacity, a step of inquiring the mobile station apparatus for additional processing capacity; In response to the inquiry from the base station apparatus, the mobile station apparatus includes a step of extracting a target to be added from its own processing capacity and notifying the base station apparatus.

  (9) Also, the mobile station apparatus processing capacity management method of the present invention is a mobile station apparatus processing capacity management method in a communication system comprising a mobile station apparatus, a base station apparatus, and an exchange station that manages the mobile station apparatus. The base station device acquiring and holding the processing capability of the mobile station device from the exchange when communication to a mobile station device in a standby state occurs in the cell of the base station device; In the mobile station device, when the wireless communication by the combination of frequency bands is set from the base station device, an inquiry about additional processing capability is performed from the base station device, or any processing capability is When it is known in the mobile station device whether the notification is sent from the base station device to the switching center, and when communication of a combination of frequency bands not included in the known processing capability is set in the own station, Characterized in that it comprises the steps of performing notification processing capacity for the combination relative to the serial base station apparatus.

  (10) An integrated circuit according to the present invention is an integrated circuit that acquires and manages a mobile station apparatus processing capability of a base station apparatus that performs radio communication with a mobile station apparatus, and the mobile station apparatus transmits and receives the integrated circuit. Wireless communication based on a combination of frequency bands that are acquired from the mobile station apparatus or an exchange that manages the mobile station apparatus and holds the processing capacity for each possible frequency band and frequency band combination, and that are not included in the held processing capacity When the mobile station apparatus is set for the mobile station apparatus, a mobile station apparatus processing capacity information management unit is provided for inquiring of the mobile station apparatus for additional processing capacity.

  As described above, according to the present invention, it is possible to provide a communication system, a base station device, a mobile station device, a transmission method, and an integrated circuit that can efficiently notify and manage the processing capability of the mobile station device.

It is the block diagram which showed an example of the mobile station apparatus which concerns on embodiment of this invention. It is the block diagram which showed an example of the base station apparatus which concerns on embodiment of this invention. It is a figure which shows an example of the communication network structure which concerns on embodiment of this invention. It is the figure which showed an example of the setting of the component carrier with respect to the mobile station apparatus which concerns on embodiment of this invention. It is the sequence chart which showed the random access procedure of Contention based Random Access which concerns on embodiment of this invention. It is the sequence chart which showed the procedure of the mobile station apparatus processing capability inquiry which concerns on Embodiment 1 of this invention. It is the sequence chart which showed the mobile station calling procedure which concerns on embodiment of this invention. It is the sequence chart which showed the procedure of the mobile station apparatus processing capability inquiry which concerns on Embodiment 2 of this invention. It is the sequence chart which showed the procedure of the conventional mobile station apparatus processing capability inquiry. It is the sequence chart which showed the conventional mobile station calling procedure. It is the figure shown about an example of allocation of the receiver to the component carrier in the conventional mobile station apparatus.

  Before describing the embodiment of the present invention, a physical channel, carrier aggregation, and processing capability notification method according to the present invention will be described.

(1) Physical Channel A physical channel (or physical signal) used in EUTRA and Advanced EUTRA will be described. The physical channel includes a downlink channel in the downlink transmitted from the base station apparatus to the mobile station apparatus, and an uplink channel in the uplink transmitted from the mobile station apparatus to the base station apparatus. The physical channel may be added or changed in the future in EUTRA and Advanced EUTRA. However, even if the physical channel is changed, the description of each embodiment of the present invention is not affected.

  Synchronization signals (Synchronization Signals) are composed of three types of primary synchronization signals and secondary synchronization signals composed of 31 types of codes arranged alternately in the frequency domain. By the combination, 504 kinds of cell identifiers (Cell ID: PCI) for identifying base station apparatuses and frame timing for radio synchronization are shown. The mobile station device specifies the cell ID of the synchronization signal received by the cell search.

  A physical broadcast information channel (PBCH; Physical Broadcast Channel) is transmitted for the purpose of notifying control parameters (broadcast information (system information): System information) commonly used by mobile station apparatuses in a cell. Broadcast information that is not notified by the physical broadcast information channel is transmitted by a layer 3 message using the downlink data channel, in which radio resources are notified by the downlink control channel. As broadcast information, a cell global identifier (CGI) indicating an individual cell identifier, a tracking area identifier (TAI) for managing a standby area by paging, and the like are notified.

  The downlink reference signal is a pilot signal transmitted at a predetermined power for each cell. The downlink reference signal is a known signal that is periodically repeated at a frequency / time position based on a predetermined rule. The mobile station apparatus measures the reception quality for each cell by receiving the downlink reference signal. The mobile station apparatus also uses the downlink reference signal as a reference signal for demodulation of the downlink control channel or downlink data channel transmitted simultaneously with the downlink reference signal. As a sequence used for the downlink reference signal, a sequence that can be identified for each cell is used. In addition, although a downlink reference signal may be described as cell-specific reference signal (RS), the use and meaning are the same.

  A downlink control channel (PDCCH; Physical Downlink Control Channel) is transmitted in several OFDM symbols from the beginning of each subframe. Radio resource allocation information according to the scheduling of the base station device and transmission to the mobile station device Used to indicate the amount of power increase / decrease adjustment. The mobile station apparatus monitors (monitors) the downlink control channel addressed to itself before transmitting / receiving the layer 3 message (paging, handover command, etc.) that is downlink data or downlink control data, and By receiving the downlink control channel, it is necessary to acquire radio resource allocation information called an uplink grant at the time of transmission and a downlink grant at the time of reception.

  A downlink data channel (PDSCH: Physical Downlink Shared Channel) is used to notify paging and broadcast information as a layer 3 message that is downlink control data in addition to downlink data. The radio resource allocation information of the downlink data channel is indicated by the downlink control channel.

  An uplink data channel (PUSCH) mainly transmits uplink data and uplink control data, and can also include control data such as downlink reception quality and ACK / NACK. Similarly to the downlink, the radio resource allocation information of the uplink data channel is indicated by the downlink control channel.

  A random access channel (PRACH) is a channel used for notifying a preamble sequence and has a guard time. The random access channel is used as a means for accessing the base station apparatus of the mobile station apparatus. The mobile station apparatus uses a random access channel for a request for scheduling transmission data when the uplink control channel is not set and a request for transmission timing adjustment information necessary for matching the uplink transmission timing with the reception timing window of the base station apparatus. . The mobile station apparatus that has received the transmission timing adjustment information sets an effective time of the transmission timing adjustment information, and is in a transmission timing adjustment state during the effective time and in a transmission timing non-adjustment state outside the effective period. Since other physical channels are not related to each embodiment of the present invention, detailed description thereof is omitted.

(2) Carrier aggregation Carrier aggregation is a technology that aggregates (aggregates) a plurality of different frequency bands (component carriers) and treats them as a single frequency band. For example, when five component carriers having a frequency bandwidth of 20 MHz are aggregated by carrier aggregation, the mobile station apparatus can access the mobile station apparatus by regarding it as a frequency bandwidth of 100 MHz.

  The component carriers to be aggregated may be a continuous frequency band, or may be a frequency band in which all or part of them are discontinuous. For example, when the usable frequency band is the 800 MHz band, the 2.4 GHz band, and the 3.4 GHz band, one component carrier is the 800 MHz band, another component carrier is the 2 GHz band, and another component carrier is 3.4 GHz. It may be a band.

  It is also possible to aggregate continuous or discontinuous component carriers in the same frequency band, for example, the 2.4 GHz band. The frequency bandwidth of each component carrier may be a frequency bandwidth narrower than 20 MHz, or may be different from each other.

  Based on various factors such as the processing capacity of the mobile station device, the amount of data buffer that remains, the reception quality of the mobile station device, the load in the cell and QoS, the base station device assigns the uplink or The number of downlink component carriers can be increased or decreased.

[Example of communication network configuration of the present invention]
FIG. 3 is a diagram showing an example of a communication network configuration according to the embodiment of the present invention. When the mobile station apparatus 1 can be wirelessly connected to the base station apparatus 2 by simultaneously using a plurality of frequency bands (component carriers, Band1 to Band3) by carrier aggregation, the communication network configuration has one base The station apparatus 2 includes transmitters 21 to 23 (and receivers 24 to 26 not shown) for each of a plurality of frequency bands, and the configuration in which control of each frequency band is performed by one base station apparatus 2 simplifies the control. From the viewpoint of However, the base station apparatus 2 transmits a single frequency band with a plurality of transmitters, or transmits a plurality of frequency bands with a single transmitter because the frequency bands are continuous. You may be the structure to perform.

  The communicable range of each frequency band controlled by the transmitter of the base station apparatus 2 is regarded as a cell and exists in the same spatial area. At this time, the areas (cells) covered by each frequency band may have different sizes and shapes. Further, the mobile station apparatus 1 includes receivers 14 to 16 (and transmitters 11 to 13 (not shown)), thereby performing communication with the base station apparatus 2 by carrier aggregation.

  The mobile station apparatus 1 may also have a configuration in which a plurality of receivers receive a single frequency band or a configuration in which a single receiver receives a plurality of frequency bands.

  In the description to be described later, each area covered by the frequency of the component carrier formed by the base station apparatus 2 will be referred to as a cell, but this may be different from the definition of the cell in the actually operated communication system. Note that there is sex.

  For example, in some communication systems, some of the component carriers used by carrier aggregation may be defined simply as additional radio resources rather than cells. By referring to the component carrier as a cell in the present invention, even if a case different from the definition of the cell in the actually operated communication system occurs, the gist of the present invention is not affected. The mobile station device 1 may be wirelessly connected to the base station device 2 via a relay station device (or repeater).

[Component carrier configuration setting example]
FIG. 4 shows the correspondence between the downlink component carrier and the uplink component carrier that the base station device 2 sets for the mobile station device 1 when the mobile station device 1 according to the embodiment of the present invention performs carrier aggregation. It is the figure which showed an example of the relationship. In FIG. 4, the downlink component carrier DL_CC1 and the uplink component carrier UL_CC1, the downlink component carrier DL_CC2, the uplink component carrier UL_CC2, and the downlink component carrier DL_CC3 and the uplink component carrier UL_CC3 are cell-specific connected (Cell Specific Linkage). ing. The cell-specific connection is, for example, a correspondence relationship (linkage relationship) between uplink and downlink frequency bands accessible to the base station device 2 when the mobile station device 1 is not carrier-aggregated. Is indicated by the notification information.

  The relationship between uplink and downlink frequency bands is explicitly specified as frequency information in broadcast information, or is defined uniquely for each operating frequency when not explicitly indicated in broadcast information. It is implicitly instructed by using frequency difference information. In addition to these methods, other methods may be used as long as the correspondence relationship between uplink and downlink frequency bands can be shown for each cell.

  On the other hand, the base station apparatus 2 can also individually set the correspondence relationship between the downlink component carrier and the uplink component carrier for each mobile station apparatus separately from the cell-specific connection (individual connection: UE Specific Linkage). It is. The dedicated connection is set at the same time when a downlink component carrier and an uplink component carrier are added from the base station apparatus 2.

  In the case of FIG. 4, two downlink component carriers (DL_CC2, DL_CC3) correspond to an uplink component carrier UL_CC2 to which a certain mobile station apparatus 1 is wirelessly connected, and DL_CC3 and UL_CC2 are individually connected. DL_CC1 and DL_CC2 are cell-specific connected to UL_CC1 and UL_CC2, respectively. In this case, the mobile station apparatus 1 performs reception processing using DL_CC1 to DL_CC3, and performs transmission processing using UL_CC1 and UL_CC2.

  That is, DL_CC1 to DL_CC3 and UL_CC1 to UL_CC2 are connection component carriers used by the mobile station device 1 for communication with the base station device 2, and UL_CC3 is not used by the mobile station device 1 for communication with the base station device 2. Connection component carrier. Typically, the uplink and downlink of the primary cell are cell-specific connected, and the uplink and downlink of the secondary cell are individually connected.

  Further, for transmission power adjustment when the mobile station apparatus 1 transmits on the uplink component carrier, the reception quality of the downlink component carrier (the power of the radio signal transmitted from the base station apparatus 2 is received by the mobile station apparatus 1). The path loss value indicating the amount of attenuation until the first time is used.

  For the transmission power adjustment of the primary cell, the downlink reception quality of the primary cell is used. On the other hand, the transmission power adjustment of the secondary cell is based on either the primary cell or the downlink reception quality of the secondary cell. Whether the downlink reception quality of the primary cell or the secondary cell is used to adjust the transmission power of the secondary cell is determined by broadcast information or an individual layer 3 message (RRC message) for each mobile station device. A notification is sent from the station device 2 to the mobile station device 1.

(3) Random Access Procedure There are two access methods for random access: Contention based Random Access and Non-contention based Random Access. The Contention based Random Access is a random access that may collide between mobile station apparatuses, and is a random access that is normally performed during connection processing.

  Non-contention based random access is a random access in which no collision occurs between mobile station apparatuses, and is a random access used to quickly synchronize between the mobile station apparatus and the base station apparatus, such as a handover. In special cases, it is led by the base station device.

  In Contention based Random Access, a random access preamble (also simply referred to as a preamble) is transmitted through a random access channel in order to establish uplink synchronization (adjust uplink synchronization timing). The preamble includes a signature which is a signal pattern representing information, and several tens of types of signatures can be prepared to express several bits of information.

  In EUTRA, it is assumed that 6-bit information is transmitted, and it is assumed that 64 types of signatures are prepared. The 6-bit information is determined based on the random ID, 5 bits are the random ID, the remaining 1 bit is the downlink path loss, and the amount of uplink data to be transmitted after random access.

  Here, the outline of the communication procedure of Contention based Random Access and Non-Contention based Random Access will be described.

  FIG. 5 is a sequence chart showing a procedure example of Contention based Random Access. The Contention based Random Access is used at the time of initial access, reconnection, Inter-RAT handover, and the like.

  In step S51, the mobile station apparatus receives broadcast information from the base station apparatus, and acquires signature information (such as radio resource information of a random access channel and signature group information) for selecting a signature to be transmitted. When a random access request is generated (step S52), a signature is selected based on the signature information, and the selected preamble is transmitted to the base station apparatus using the random access channel (step S53).

  When the base station apparatus receives the random access channel from the mobile station apparatus, the base station apparatus calculates an uplink synchronization timing shift (Timing Advance) between the mobile station apparatus and the base station apparatus from the transmitted preamble, and a random access response (random access response) Mobile station apparatus that performs scheduling to transmit a mobile station apparatus, allocates temporary C-RNTI (Cell-Radio Network Temporary Identity) as a temporary identifier to the mobile station apparatus, and transmits a preamble to the downlink shared control channel (PDCCH) RA-RNTI (Random Access-Radio Network Temporary Identity), which is an identifier indicating the response addressed to, and resource allocation information of the downlink data channel are arranged, and uplink synchronization timing shift information, uplink scheduling information, Temp are assigned to the downlink data channel (PDSCH). Place lary C-RNTI and the received preamble signature ID number (or random ID), and transmits the downlink data channel and the downlink shared control channel as a random access response (step S54).

  When the mobile station apparatus confirms that the RA-RNTI is present in the downlink shared control channel (PDCCH), the mobile station apparatus confirms the content of the random access response arranged in the downlink data channel (PDSCH), and transmits the signature ID number ( Alternatively, a response including a random ID) is extracted. Then, the uplink synchronization timing deviation is corrected, and uplink scheduling data including Temporary C-RNTI is transmitted using the scheduled radio resource (step S55). Note that the mobile station apparatus continues to wait for a random access response from the base station apparatus for a certain period, and when it does not receive the random access response including the signature ID number of the transmitted preamble, it transmits the preamble again.

  When the base station apparatus receives uplink scheduling data from the mobile station apparatus, the base station apparatus determines to the mobile station apparatus whether or not there is a collision between the mobile station apparatuses using Temporary C-RNTI included in the received uplink scheduling data. Downlink scheduling data to be transmitted to the mobile station apparatus (step S56). The downlink scheduling data is also called contention resolution. The mobile station apparatus determines that the random access has succeeded by correctly receiving the downlink scheduling data within the time limit, and ends the random access procedure. Then, Temporary C-RNTI is not temporary, and is used as an identifier (C-RNTI) for identifying a mobile station apparatus in the cell.

  On the other hand, in non-contented based random access, the base station apparatus selects a signature ID number and notifies the mobile station apparatus. The mobile station apparatus uses the notified signature and transmits a preamble using a random access channel.

  When the base station apparatus receives the preamble from the mobile station apparatus, the base station apparatus calculates a synchronization timing shift between the mobile station apparatus and the base station apparatus from the preamble, and transmits the random access channel to the downlink shared control channel (PDCCH). A C-RNTI is arranged to indicate a response addressed to the device, and a random access response including synchronization timing shift information is transmitted. The mobile station apparatus corrects the synchronization timing shift from the received random access response, and determines that the random access has been correctly completed.

(4) Processing capability notification method The number of component carriers and the number of MIMO layers that the mobile station apparatus can support for each frequency band and frequency band combination that are simultaneously transmitted and received differ depending on the number of receivers and antennas of the mobile station. There is a case. Therefore, the mobile station apparatus notifies the base station apparatus of the processing capability including the number of component carriers and the number of MIMO layers that can be supported for each frequency band and each combination of frequency bands based on a request from the base station apparatus.

  The processing capability notification / management method of the mobile station apparatus described in Non-Patent Document 2 is shown in FIG. In FIG. 9, first, the base station apparatus transmits a mobile station apparatus capability inquiry message (RRC: UECapabilityEnquiry) which is an RRC message for inquiring about processing capability to the mobile station apparatus (step S91). The mobile station apparatus capability inquiry message includes information on which communication system (RAT: Radio Access technology) is requested for notification.

  The mobile station apparatus that has received the message indicates the processing capability of the mobile station apparatus with respect to the requested RAT (for example, EUTRAN, UTRAN, GERAN-PS, GERAN-CS, CDMA2000-1XRTT, etc.), and the mobile station apparatus capability information message (RRC: UECapabilityInformation). ) To the base station apparatus (step S92). When the requested RAT is EUTRAN, the mobile station apparatus notifies the processing capability including the number of component carriers and the number of MIMO layers that can be supported for each frequency band and each combination of frequency bands.

  The base station apparatus maintains the processing capability of the mobile station apparatus during the RRC_CONNECTED state connected to the mobile station apparatus. In addition, the base station apparatus uses the mobile station apparatus capability information notification message (S1-AP: UE CAPABILITY INFO INDICATION) of the S1-AP message used for communication with the switching center (MME) to the MME that manages the mobile station apparatus. The processing capability of the mobile station apparatus is notified (step S93). The processing capability of the mobile station apparatus is held in the memory of the MME while being connected to the MME (ECM_Connected), and if the mobile station apparatus capability information notification message is notified again from the base station apparatus, the contents of the memory Is updated.

  FIG. 10 is a sequence chart showing a mobile station calling procedure when communication is started for a mobile station apparatus in the standby (RRC_IDLE) state in ECM_Connected.

  In FIG. 10, the MME transmits a paging message for calling the mobile station apparatus to the base station apparatus in the standby area (tracking area) where the mobile station apparatus is registered (step S1001). All base station apparatuses that have received the Paging message from the MME wirelessly transmit a paging signal addressed to the mobile station apparatus in the cell of the local station (step S1002). The mobile station apparatus that has received the Paging signal performs a random access procedure and connects to the base station apparatus of the cell in which the mobile station apparatus is waiting (step S1003).

  The connected mobile station apparatus transmits a service request message (NAS: Service Request), which is a NAS (Non-Access-Stratum) message used for communication with the MME, to the connected base station apparatus (Step S1004). The base station apparatus which made the notification notifies the MME of the initial mobile station apparatus message (S1-AP: INITIAL UE MESSAGE) including the service request message (step S1005). The MME that has received the initial mobile station apparatus message transmits an initial context setup request (S1-AP: INITIAL CONTEXT SETUP REQUEST) to the base station apparatus (step S1006). This message includes a general mobile station apparatus context (General UE Context), a radio access bearer context (E-RAB Context), and the like, and includes the processing capability of the mobile station apparatus. The base station apparatus that has received the initial context setup request sets up the context of the target mobile station apparatus and performs necessary processing such as radio bearer setup (step S1007).

  After that, when the connection with the mobile station device is successful, the base station device transmits an initial context setup completion message (S1-AP: INITIAL CONTEXT SETUP COMPLETE) to the MME (step S1008). If the connection fails, an initial context setup failure message (S1-AP: INITIAL CONTEXT SETUP FAILURE) is transmitted.

  Further, the base station apparatus transmits a mobile station apparatus capability inquiry message to the mobile station apparatus in order to acquire the processing capability of another RAT as necessary (step S1009), and receives the mobile station apparatus capability information message. (Step S1010). According to the above procedure, since the base station apparatus does not need to acquire processing capability from the mobile station apparatus directly using radio resources, it is possible to improve the efficiency of radio resource utilization.

  Considering the above matters, preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In the description of the present invention, when it is determined that a specific description of a known function or configuration related to the present invention obscures the gist of the present invention, a detailed description thereof is omitted.

<First Embodiment>
A first embodiment of the present invention will be described below.

  FIG. 1 is a block diagram illustrating an example of a mobile station apparatus according to an embodiment of the present invention. The mobile station apparatus 1 includes a reception unit 101, a demodulation unit 102, a decoding unit 103, a measurement processing unit 104, a control unit 105, a random access processing unit 106, a coding unit 107, a modulation unit 108, a transmission unit 109, an upper layer 110, a processing The capability information holding unit 111 is configured. Prior to reception, mobile station apparatus control information is input from the upper layer 110 to the control unit 105, and the mobile station apparatus control information related to reception is received as reception control information, including a reception unit 101, a demodulation unit 102, a decoding unit 103, and a measurement processing unit 104. Is entered appropriately. The reception control information includes information such as demodulation information, decoding information, reception frequency band information, reception timing for each channel, multiplexing method, and radio resource arrangement information as reception schedule information.

  The reception signal is received by the reception unit 101. The receiving unit 101 receives a signal in the frequency band notified by the reception control information. The received signal is input to demodulator 102. Demodulation section 102 demodulates the received signal and inputs the received signal to decoding section 103. The decoding unit 103 correctly decodes the received signal based on the reception control information. Decoding section 103 appropriately separates the received signal into downlink traffic data and downlink control data, and inputs the separated signals to higher layer 110, respectively.

  In addition, the decoding unit 103 inputs a decoded received signal related to measurement to the measurement processing unit 104. The measurement processing unit 104 performs measurement processing of the reception quality of the downlink reference signal for each cell and measurement processing of the reception error rate of the downlink control channel or the downlink data channel, and averages the measured reception quality for each sample. (Filtered) downlink measurement information is generated, and the downlink measurement information is output to the upper layer 110. In addition, the measurement processing unit 104 compares the obtained reception quality with a threshold value (also referred to as Qout) used for detecting a downlink synchronization error, and determines the downlink synchronization error and the downlink synchronization recovery as necessary. Output to.

  Also, mobile station apparatus control information is input from the upper layer 110 to the control section 105, and the mobile station apparatus control information related to transmission is transmitted to the random access processing section 106, encoding section 107, modulation section 108, and transmission section 109 as transmission control information. Entered appropriately. The transmission control information includes information such as encoding information, modulation information, transmission frequency band information, transmission timing for each channel, multiplexing method, and radio resource arrangement information as uplink scheduling information of the transmission signal. Random access processing unit 106 receives random access information necessary for transmission of a random access channel such as random access radio resource information and the maximum number of transmissions from upper layer 110.

  Further, when the random access processing unit 106 detects the random access problem by counting the number of transmissions of the random access channel, the random access processing unit 106 notifies the upper layer 110 of random access problem information indicating that the random access problem has occurred. The encoding unit 107 receives uplink traffic data and uplink control data from the upper layer 110, and random access data from the random access processing unit 106. The encoding unit 107 appropriately encodes each data according to the transmission control information and outputs the data to the modulation unit 108. The modulation unit 108 modulates the input from the coding unit 107.

  The transmission unit 109 maps the output of the modulation unit 108 to the frequency domain, converts the frequency domain signal into a time domain signal, performs power amplification on a carrier wave of a predetermined frequency, and transmits the signal. In FIG. 1, a transmitter 109 and a receiver 101 are called a transmitter and a receiver, respectively, in combination with an antenna (not shown), and a plurality of mobile station apparatuses 1 are used to perform communication in the same or different frequency bands. A transmitter or a receiver may be provided. Other components of the mobile station apparatus 1 are not related to the present embodiment, and are omitted.

  FIG. 2 is a block diagram illustrating an example of a base station apparatus according to an embodiment of the present invention. The base station apparatus 2 is included in the functions of the reception unit 201, demodulation unit 202, decoding unit 203, control unit 204, encoding unit 205, modulation unit 206, transmission unit 207, network signal processing unit 208, upper layer 210, and upper layer. Mobile station apparatus processing capability information management unit 209.

  Upper layer 210 inputs downlink traffic data and downlink control data to encoding section 205. The encoding unit 205 encodes each input data and inputs the data to the modulation unit 206. Modulation section 206 modulates the encoded signal. Also, in the modulation unit 206, the downlink reference signal is multiplexed with the modulated signal and mapped to the frequency domain. The transmission unit 207 converts the frequency domain signal output from the modulation unit 206 into a time domain signal, places the converted signal on a carrier wave of a predetermined frequency, and performs power amplification and transmission. A downlink data channel in which downlink control data is arranged typically forms a layer 3 message (RRC message).

  The receiving unit 201 converts the received signal from the mobile station device 1 into a baseband digital signal. The digital signal is input to the demodulation unit 202 and demodulated. The signal demodulated by the demodulator 202 is subsequently input to the decoder 203 and decoded. The decoding unit 203 appropriately separates the received signal into uplink traffic data and uplink control data, and inputs each to the higher layer 210.

  Base station apparatus control information necessary for the control of each block is input from the upper layer 210 to the control unit 204, and the base station apparatus control information related to transmission is transmitted from the control unit 204 as transmission control information as a coding unit 205, modulation. Base station apparatus control information related to reception is appropriately input to each block of the reception unit 201, demodulation unit 202, and decoding unit 203 as reception control information in each block of the unit 206 and transmission unit 207.

  On the other hand, the network signal processing unit 208 transmits or receives a control message between the base station devices 2 or between the control station device (or gateway device) or the MME and the base station device 2. Control messages are transmitted and received via a network line.

  The mobile station apparatus processing capacity information management unit 209 acquires the processing capacity from the MME or the mobile station apparatus 1 and holds the acquired processing capacity. Also, the mobile station apparatus processing capability information management unit 209 notifies all or part of the processing capability to the MME that manages the mobile station apparatus 1 through the network signal transmission / reception unit 208. In addition, when the connection with the mobile station device 1 is terminated (when the mobile station device 1 enters the RRC_IDLE state), the mobile station device processing capability information management unit 209 deletes the information of the mobile station device 1.

  The network signal processing unit 208 is managed by an upper layer. The RRC of the base station device 2 exists as a part of the upper layer 210. In FIG. 2, the other constituent elements of the base station apparatus 2 are not related to the present embodiment, and are omitted.

  The MME (not shown) holds information on the mobile station apparatus 1 in the ECM_Connected state on the memory (or other storage medium), acquires information from the base station apparatus 2 as necessary, and stores the information Update. Further, when a communication request for the mobile station apparatus 1 in the ECM_Connected state and the RRC_IDLE state is generated, the above-described mobile station calling procedure is performed.

  Subsequently, a processing capability notification / management method of the mobile station apparatus according to the present embodiment will be described with reference to FIGS. 6 and 7.

  First, FIG. 6 is a sequence chart showing a processing capability notification / management method of the mobile station apparatus in the present embodiment. In steps S61 and S62, as in steps S91 and S92 of FIG. 9, the base station apparatus 2 includes the number of component carriers and the number of MIMO layers supported for each frequency band and frequency band combination of the mobile station apparatus 1. Get processing power. Next, the base station apparatus 2 selects only the processing capacity for each frequency band from the acquired processing capacity (step S63), and notifies the MME with a mobile station apparatus capability information notification message (step S64). The MME holds the notified processing capability (step S65).

  Next, FIG. 7 is a sequence chart showing a part of a mobile station calling procedure when starting communication with the mobile station apparatus 1 in the ECM_Connected standby (RRC_IDLE) state in the present embodiment. The processing up to the initial mobile station apparatus message transmission (steps S701 to S705) in FIG. 7 is the same as steps S1001 to S1005 in FIG.

  The MME notifies the base station apparatus 2 connected to the mobile station apparatus 1 of the processing capability for each frequency band of the mobile station apparatus 1 using an initial context setup request message (step S706). The base station apparatus 2 retains the processing capability. Next, the base station apparatus 2 sets up the context of the target mobile station apparatus 1 and performs necessary processing such as radio bearer setup (step S708).

  After that, when the connection with the mobile station device 1 is successful, the base station device 2 transmits an initial context setup completion message (S1-AP: INITIAL CONTEXT SETUP COMPLETE) to the MME. When the connection fails, an initial context setup failure message (S1-AP: INITIAL CONTENT SETUP FAILURE) is transmitted (step S709).

  After that, the base station apparatus 2 determines whether or not additional notification from the mobile station apparatus 1 is necessary based on whether or not the carrier aggregation process of the own station or the mobile station apparatus 1 is possible (step S710). When additional notification is required (when there is a possibility of performing carrier aggregation by combining multiple frequency bands), the base station device 2 gives the mobile station device 1 other than the processing capability for each frequency band for a specific RAT. Mobile station apparatus capability inquiry message (Additional Info Enquiry) that inquires information (processing capacity information for each combination of frequency bands) (step S711), and the mobile station apparatus 1 that has received the mobile station capability inquiry message Then, the processing capability for each combination of frequency bands supported by the own station in the designated RAT is extracted (step S712), and the extracted processing capability (Additional Info) is notified to the base station apparatus 2 (step S713).

  As described above, the MME in this embodiment holds only the processing capability for each frequency band supported by the mobile station apparatus 1 as basic information, and the base station apparatus 2 performs carrier aggregation using a plurality of frequency bands. By acquiring processing capability other than basic information from the mobile station device 1 only, the storage capacity in the MME and the communication load with the base station device 2 are reduced, and there is no need between the base station device 2 and the mobile station device 1. It is possible to reduce the waste of radio resources and the power consumption of the mobile station device 1 due to the notification of the processing capacity.

  In the above description, only the processing capability for each frequency band is selected as the basic information in step S63 of FIG. 6, but not limited to this, the processing capability for each combination of frequency bands is included. Also good. In this case, in step S707 of FIG. 7, the processing capability for each combination of the partial frequency bands is also included in the basic information. In step S710, the base station apparatus 2 uses the frequency other than the basic information held by itself. It is determined that additional notification is necessary when performing carrier aggregation by a combination of bands.

  In addition, in steps S711 and S712 of FIG. 7, the base station apparatus 2 acquires additional processing capacity (for each combination of frequency bands) using the mobile station apparatus capability inquiry message. When a component carrier is added to or deleted from the mobile station apparatus 1, the mobile station apparatus 1 moves the processing capacity in the combination of the frequency bands of the component carriers allocated to the mobile station apparatus 1 at that time to the base station apparatus 2. You may make it notify automatically.

  In this case, the base station device 2 can include information on whether or not it is necessary to notify the processing capability of the combination in the component carrier addition message, and the content held by the base station device 2 as basic information is If it is known in the mobile station device 1, it can be notified when the frequency band combination is not included in the basic information.

<Second Embodiment>
A second embodiment of the present invention will be described below. This embodiment is another example relating to the notification of the processing capability of the mobile station apparatus.

  The configurations of the mobile station apparatus and the base station apparatus used in the present embodiment may be the same as those of the mobile station apparatus 1 (FIG. 1) and the base station apparatus 2 (FIG. 2) of the first embodiment, and thus the description thereof is omitted. .

  A method for notifying / managing the processing capability of the mobile station apparatus in the present embodiment will be described with reference to FIGS.

  FIG. 8 is a sequence chart showing the processing capability notification / management method of the mobile station apparatus in this embodiment. First, the base station apparatus 2 transmits to the mobile station apparatus 1 a mobile station apparatus capability inquiry message that inquires about the processing capability for each frequency band (step S81). The inquiry message includes information regarding which communication system (RAT: Radio Access technology) is requested and whether basic information or additional information is requested. The mobile station device 1 that has received the message requests the processing capability for each frequency band if the basic information (Basic Info) is requested among the processing capabilities of the local station regarding the requested RAT, and requests additional information (Additional Info). If so, the processing capacity for each combination of frequency bands is extracted (step S82), and the base station apparatus 2 is notified with a mobile station apparatus capability information message (step S83). The base station apparatus 2 retains the processing capability of the mobile station apparatus 1 during the RRC_CONNECTED state connected to the mobile station apparatus 1. Further, the base station apparatus 2 notifies the basic information of the processing capabilities of the mobile station apparatus 1 to the MME that manages the mobile station apparatus 1 with a mobile station apparatus capability information notification message (step S84). The processing capability of the mobile station apparatus 1 is held in the MME while being connected to the MME (ECM_Connected) (step S85).

  Next, a mobile station calling procedure when starting communication with the mobile station apparatus 1 in the standby (RRC_IDLE) state in ECM_Connected in the present embodiment will be described. The mobile station calling procedure in this embodiment is the same as that in the first embodiment, but steps S711 to S713 in FIG. 7 are the operations at the time of requesting additional information in steps S81 to S83 in FIG.

  As described above, the MME in this embodiment holds only the processing capability for each frequency band supported by the mobile station apparatus 1 as basic information, and the base station apparatus 2 performs carrier aggregation using a plurality of frequency bands. By acquiring processing capability other than basic information from the mobile station device 1 only, the storage capacity of the MME and the communication load with the base station device 2 are reduced. By separating, it is possible to reduce waste of radio resources due to notification of unnecessary processing capacity and power consumption of the mobile station apparatus 1.

  In the above description, only the processing capability for each frequency band is selected as the basic information in step S82 of FIG. 8, but this is not limiting, and the processing capability for each combination of frequency bands is included. Also good. In this case, in step S707 of FIG. 7, the processing capability for each combination of the partial frequency bands is also included in the basic information. In step S710, the base station apparatus 2 uses the frequency other than the basic information held by itself. It is determined that additional notification is necessary when performing carrier aggregation by a combination of bands.

  In addition, in steps S711 and S712 of FIG. 7, the base station apparatus 2 acquires additional processing capacity (for each combination of frequency bands) using the mobile station apparatus capability inquiry message. When a component carrier is added to or deleted from the mobile station apparatus 1, the mobile station apparatus 1 moves the processing capacity in the combination of the frequency bands of the component carriers allocated to the mobile station apparatus 1 at that time to the base station apparatus 2. You may make it notify automatically. In this case, the base station device 2 can include information on whether or not it is necessary to notify the processing capability of the combination in the component carrier addition message, and the content held by the base station device 2 as basic information is Since it is known in the mobile station apparatus 1, it can be notified when the frequency band combination is not included in the basic information.

  In addition, the mobile station apparatus capability inquiry message in this embodiment may be designed so that the basic information request, additional information only request, and all information request can be identified. In this case, if the base station device 2 does not have the processing capability related to the mobile station device 1, a message requesting all information is transmitted to the mobile station device 1, and the basic information of the acquired processing capability is sent to the MME. A message requesting basic information may be sent to the mobile station apparatus 1, the acquired processing capability is notified to the MME, and additional information is requested only when additional information is required for carrier aggregation. It is also possible to transmit a message to be transmitted to the mobile station apparatus 1.

  The embodiment described above is merely an example, and can be realized using various modifications and replacement examples.

  Further, for convenience of explanation, the mobile station device 1 and the base station device 2 of the embodiment have been described using functional block diagrams, but the functions of each part of the mobile station device 1 and the base station device 2 or one of these functions Is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system and executed to control the mobile station apparatus and the base station apparatus. Also good. Here, the “computer system” includes an OS and hardware such as peripheral devices.

  The “computer-readable recording medium” refers to a semiconductor medium (eg, RAM, nonvolatile memory card, etc.), an optical recording medium (eg, DVD, MO, MD, CD, BD, etc.), a magnetic recording medium (eg, , A magnetic tape, a flexible disk, etc.) and a storage device such as a disk unit built in a computer system. Furthermore, the “computer-readable recording medium” means that a program is dynamically held for a short time, like a communication line when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In this case, it is intended to include those that hold a program for a certain period of time, such as a volatile memory inside a computer system serving as a server or a client in that case. 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. .

  Further, each functional block of the mobile station apparatus 1 and the base station apparatus 2 used in the above embodiments may be realized as an LSI that is typically an integrated circuit. Each functional block may be individually formed into chips, or a part or all of them may be integrated into a chip. Further, the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. In addition, when an integrated circuit technology that replaces LSI appears due to progress in semiconductor technology, an integrated circuit based on the technology can also be used.

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

DESCRIPTION OF SYMBOLS 1 ... Mobile station apparatus 2 ... Base station apparatuses 14-16 ... Receivers 21-23 ... Transmitter 101, 201 ... Receiver 102, 202 ... Demodulator 103, 203 ... Decoder 104 ... Measurement processor 105, 204 ... Control Unit 106 ... Random access processing unit 107, 205 ... Encoding unit 108, 206 ... Modulation unit 109, 207 ... Transmission unit 110, 210 ... Upper layer 111 ... Processing capability information holding unit 208 ... Network signal transmission / reception unit 209 ... Mobile station apparatus processing Capacity information management department

Claims (10)

A communication system comprising a mobile station device, a base station device, and an exchange that manages the mobile station device,
The mobile station device notifies the base station device of the processing capability for each frequency band and frequency band combination that the local station can transmit and receive,
The base station apparatus notifies the switching center of a part of the processing capacity when notifying the processing center of the processing capacity notified from the mobile station apparatus. A communication system comprising a mobile station device, a base station device, and an exchange that manages the mobile station device,
The base station device acquires and holds the processing capability of the mobile station device from the exchange when communication to the mobile station device in a standby state occurs in the cell of the own station,
Furthermore, when there is a possibility that the base station apparatus performs wireless communication with the mobile station apparatus using a combination of frequency bands not included in the acquired processing capacity, the base station apparatus has additional processing capacity. Make an inquiry,
In response to an inquiry from the base station apparatus, the mobile station apparatus extracts a target to be added from its own processing capacity and notifies the base station apparatus.   The processing capability notified from the switching center is the processing capability for each frequency band that can be transmitted / received by the mobile station device, and the processing capability for additionally inquiring to the mobile station device is transmitted / received by the mobile station device. The communication system according to claim 2, wherein the processing capacity is for each combination of frequency bands that can be performed. A communication system comprising a mobile station device, a base station device, and an exchange that manages the mobile station device,
The base station device acquires and holds the processing capability of the mobile station device from the exchange when communication to the mobile station device in a standby state occurs in the cell of the own station,
When the mobile station apparatus is set up for wireless communication by a combination of frequency bands from the base station apparatus,
It is known in the mobile station device when the inquiry about the additional processing capability is made from the base station device, or which processing capability is notified from the base station device to the switching center, and the known processing 2. The communication system according to claim 1, wherein when communication of a combination of frequency bands not included in the capability is set in the own station, the communication capability of the combination is notified to the base station apparatus. . A base station device that performs wireless communication with a mobile station device,
The base station apparatus obtains and manages a frequency band that can be transmitted and received by the mobile station apparatus and a processing capacity for each combination of frequency bands from the mobile station apparatus or an exchange station that manages the mobile station apparatus. It has a station device processing capacity information management unit,
The mobile station apparatus processing capability information management unit performs additional processing for the mobile station apparatus when there is a possibility of performing wireless communication with the mobile station apparatus using a combination of frequency bands not included in the held processing capacity. A base station apparatus which performs capability inquiry. A base station device that performs wireless communication with a mobile station device,
The base station device
Mobile station apparatus processing capability information management for acquiring and managing the processing capability for each combination of frequency bands and frequency bands that can be transmitted and received by the mobile station device from the mobile station device or an exchange that manages the mobile station device Comprising
The mobile station device processing capability information management unit adds additional processing capability to the mobile station device when setting wireless communication for a combination of frequency bands not included in the held processing capability for the mobile station device. The base station apparatus is characterized by holding the processing capability notified from the mobile station apparatus. A mobile station apparatus that performs radio communication with the base station apparatus according to claim 5 or 6,
The mobile station device
A processing capability information holding unit for managing the processing capability for each combination of frequency bands and frequency bands that can be transmitted / received by the own station, divided into basic information and additional information,
A mobile station apparatus that notifies the base station apparatus of the additional information when a request for additional notification is included in a message inquiring processing capability from the base station apparatus. A management method of mobile station apparatus processing capability in a communication system comprising a mobile station apparatus, a base station apparatus, and an exchange that manages the mobile station apparatus,
In the base station apparatus, when communication to a mobile station apparatus that is in a standby state in its own cell occurs, acquiring and holding the processing capacity of the mobile station apparatus from the exchange, and
When there is a possibility of performing wireless communication with the mobile station apparatus with a combination of frequency bands not included in the acquired processing capacity, the mobile station apparatus inquires about additional processing capacity;
The mobile station device
In response to an inquiry from the base station apparatus, the method includes a step of extracting a target to be additionally notified from the processing capacity of the own station and notifying the base station apparatus, and a method for managing the processing capacity of the mobile station apparatus . A management method of mobile station apparatus processing capability in a communication system comprising a mobile station apparatus, a base station apparatus, and an exchange that manages the mobile station apparatus,
In the base station device, when communication to the mobile station device that is in a standby state in the cell of its own station occurs,
Obtaining and holding the processing capacity of the mobile station device from the exchange, and
In the mobile station device,
When wireless communication by a combination of frequency bands is set from the base station device,
It is known in the mobile station device when the inquiry about the additional processing capability is made from the base station device, or which processing capability is notified from the base station device to the switching center, and the known processing When communication with a combination of frequency bands not included in the capability is set for the local station,
And a step of notifying the base station apparatus of the processing capacity for the combination. An integrated circuit that performs acquisition and management of mobile station apparatus processing capability of a base station apparatus that performs radio communication with a mobile station apparatus,
Obtaining and holding the processing capacity for each combination of frequency bands and frequency bands that can be transmitted and received by the mobile station apparatus from the mobile station apparatus or an exchange that manages the mobile station apparatus,
Mobile station device processing capability information management for inquiring of the mobile station device for additional processing capability when setting wireless communication with a combination of frequency bands not included in the held processing capability to the mobile station device An integrated circuit comprising a portion.