WO2011004752A1 - Wireless communication system, base station apparatus, mobile station apparatus, wireless communication method, base station apparatus control program, and mobile station apparatus control program - Google Patents

Wireless communication system, base station apparatus, mobile station apparatus, wireless communication method, base station apparatus control program, and mobile station apparatus control program Download PDF

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Publication number
WO2011004752A1
WO2011004752A1 PCT/JP2010/061177 JP2010061177W WO2011004752A1 WO 2011004752 A1 WO2011004752 A1 WO 2011004752A1 JP 2010061177 W JP2010061177 W JP 2010061177W WO 2011004752 A1 WO2011004752 A1 WO 2011004752A1
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WIPO (PCT)
Prior art keywords
station apparatus
random access
mobile station
base station
downlink
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PCT/JP2010/061177
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French (fr)
Japanese (ja)
Inventor
翔一 鈴木
恭之 加藤
昇平 山田
大一郎 中嶋
克成 上村
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シャープ株式会社
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Publication of WO2011004752A1 publication Critical patent/WO2011004752A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • a base station apparatus allocates a plurality of uplink and downlink component carriers to a mobile station apparatus, and a base station apparatus transmits / receives a random access message using a plurality of downlink component carriers allocated to the mobile station apparatus.
  • the present invention relates to a wireless communication system, a base station device, a mobile station device, a wireless communication method, a base station device control program, and a mobile station device control program.
  • LTE Long Terminology Evolution
  • EUTRA Evolved Universal Terrestrial Radio Access
  • LTE-A LongTerm Evolution-Advanced
  • A-EUTRA Advanced Evolved Universal Universal Terrestrial Radio Access
  • an orthogonal frequency division multiplexing (OFDM) method which is multicarrier transmission, is used as a wireless communication (downlink) communication method from a base station device to a mobile station device.
  • an SC-FDMA (Single-Carrier-Frequency-Division-Multiple-Access) method that is single carrier transmission is used.
  • a synchronization channel (Synchronization Channel; SCH), a broadcast channel (Physical Broadcast Channel; PBCH), a downlink control channel (Physical Downlink Control Channel; PDCCH), a downlink shared channel (Physical Downlink Shared Channel). ; PDSCH), multicast channel (Physical Multicast Channel; PMCH), control format indicator channel (Physical Control Format Indicator Indicator Channel; PCFICH), HARQ indicator channel (Physical Hybrid Automatic Request Repeat Indicator Channel; PHICH).
  • an uplink shared channel Physical Uplink Shared Channel; PUSCH
  • an uplink control channel Physical Uplink Control Channel; PUCCH
  • a random access channel Physical Random Access Channel; PRACH
  • the purpose of using the random access channel is to synchronize the mobile station apparatus and the base station apparatus in the uplink and to request allocation of uplink radio resources.
  • the mobile station device When the mobile station device is out of synchronization with the base station device, when there is data information that the mobile station device transmits to the base station device through the uplink shared channel, or when the base station device is the mobile station device There is data information to be transmitted on the downlink shared channel, and random access is activated when the base station apparatus notifies the mobile station apparatus on the downlink control channel to activate random access.
  • Contention based Random Access is an access method that may collide between mobile station apparatuses, and is a random access that is normally performed.
  • Non-Contention based Random Access is an access method that does not cause collisions between mobile station devices. In order to quickly synchronize between the mobile station device and the base station device, the base station device takes the lead in special cases such as handover. Random access performed in
  • the mobile station device transmits only the preamble for synchronization.
  • the preamble includes a signature which is a signal pattern representing information, and several bits of information can be expressed by preparing dozens of types of signatures.
  • a signature which is a signal pattern representing information
  • several bits of information can be expressed by preparing dozens of types of signatures.
  • the mobile station device transmits 6-bit information using a preamble, and it is assumed that 64 types of signatures are prepared.
  • FIG. 11 is a diagram illustrating an example of random access in a wireless communication system according to the related art.
  • the mobile station apparatus 1 determines a signature range to be selected from downlink channel quality, etc., randomly selects a signature from the selected signature range, and transmits a preamble on a random access channel ( Message 1 (M1)).
  • M1 Message 1
  • the base station apparatus 3 When the base station apparatus 3 receives the preamble transmitted from the mobile station apparatus 1, the base station apparatus 3 calculates a synchronization timing shift between the mobile station apparatus 1 and the base station apparatus 3 from the preamble, and the mobile station apparatus 1 transmits the message 3. Scheduling (designation of uplink radio resource allocation, transmission format (message size), etc.).
  • the base station device 3 assigns a temporary C-RNTI (Cell-Radio Network Temporary Identifer) to the mobile station device 1, and RA-RNTI (Random Access-Radio) corresponding to the random access channel that has received the preamble in the downlink control channel Network Temporary Identifer), and synchronization timing shift information, scheduling information, Temporary C-RNTI, and received preamble signature number (random ID,) in the downlink shared channel indicated by the radio resource allocation included in the downlink control channel Alternatively, a random access response including a preamble ID is transmitted (message 2 (M2)).
  • M2 messages 2
  • the mobile station apparatus 1 When the mobile station apparatus 1 confirms that the RA-RNTI is included in the downlink control channel, the mobile station apparatus 1 displays the contents of the random access response arranged in the downlink shared channel indicated by the radio resource allocation included in the downlink control channel. Check. Then, the mobile station apparatus 1 extracts the response including the preamble signature number transmitted by the mobile station apparatus 1, corrects the synchronization timing shift, and preliminarily stores the base station in the radio resource and transmission format of the allocated uplink shared channel.
  • the message 3 including the C-RNTI notified from the device 3, or a connection request message (RRCConnectionRequest message) or a connection reset request message (RRCConnectionReestablishmentRequest message) is transmitted (message 3 (M3)).
  • the base station apparatus 3 When receiving the message 3 from the mobile station apparatus 1, the base station apparatus 3 identifies the C-RNTI included in the received message 3, the connection request message, or the connection reset request message included in the message 3 Is transmitted to the mobile station apparatus 1 to determine whether or not a collision occurs between the mobile station apparatuses 1 (message 4 (M4)).
  • the mobile station device 1 When the mobile station device 1 has successfully received the contention resolution, the mobile station device 1 ends the process related to random access. In addition, the mobile station apparatus 1 did not detect the number of the preamble signature transmitted within the random access response reception period, or did not detect the contention resolution within the contention resolution reception period. In this case, the process starts again from the preamble transmission (see Non-Patent Document 1, section 5.1).
  • LTE-A it has backward compatibility with LTE, that is, the base station apparatus of LTE-A performs radio communication simultaneously with both mobile station apparatuses of LTE-A and LTE, There is a demand for LTE-A mobile station apparatuses to perform radio communication with both LTE-A and LTE base station apparatuses, and LTE-A is considering using the same channel structure as LTE. Has been.
  • LTE-A uses a plurality of frequency bands having the same channel structure as LTE (hereinafter, referred to as “carrier element (CC: Carrier-Component)” or “component carrier (CC: Component-Carrier)”).
  • carrier element CC: Carrier-Component
  • component carrier CC: Component-Carrier
  • a broadcast channel, a downlink control channel, a downlink shared channel, a multicast channel, a control format indicator channel, and a HARQ indicator channel are transmitted for each downlink carrier element.
  • An uplink shared channel, an uplink control channel, and a random access channel are assigned to each uplink carrier element. That is, in the frequency band aggregation, in the uplink and downlink, the base station device and the plurality of mobile station devices use an uplink control channel, an uplink shared channel, a downlink control channel, a downlink shared channel, etc.
  • Is a technology for simultaneously transmitting and receiving a plurality of data information and a plurality of control information see Chapter 5 of Non-Patent Document 2.
  • the base station apparatus and the mobile station apparatus perform random access communication using a single set of uplink carrier elements and downlink carrier elements, the base station apparatus transmits multiple uplinks to the mobile station apparatus. Even if link and downlink carrier elements are allocated, there is a problem that random access communication can be performed only with one set of uplink and downlink carrier elements.
  • the present invention has been made in view of the above circumstances, and the base station apparatus allocates a plurality of uplink and downlink component carriers to the mobile station apparatus, and a plurality of downlink components allocated to the mobile station apparatus. It is an object of the present invention to provide a radio communication system, a base station apparatus, a mobile station apparatus, a radio communication method, a base station apparatus control program, and a mobile station apparatus control program that can transmit and receive a random access message on a carrier.
  • the radio communication system of the present invention is a radio communication system in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands.
  • the base station apparatus performs random access control for transmitting a signal indicating that the random access processing started by the mobile station apparatus is successful on any one of a plurality of downlink component carriers allocated to the mobile station apparatus.
  • a control unit wherein the mobile station apparatus receives a signal of a plurality of downlink component carriers allocated by the base station apparatus, and among the uplink component carriers allocated by the base station apparatus , Any one uplink component carrier A random access process that recognizes that the random access process is successful when a signal indicating that the random access process is successful is detected on any of the plurality of downlink component carriers. And a section.
  • the base station device transmits a signal indicating that the random access processing started by the mobile station device is successful on any of a plurality of downlink component carriers assigned to the mobile station device, and the mobile station device The random access processing is started on any one of a plurality of downlink component carriers while the random access processing is started on any one of the uplink component carriers allocated by the base station apparatus. Is detected, the base station apparatus can transmit the message 4 on any one or a plurality of downlink component carriers, and the arrangement of the message 4 is free. The degree increases.
  • the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink component carriers, radio resources of a plurality of uplink component carriers and downlink component carriers are allocated to the mobile station apparatus using a plurality of messages 4. be able to.
  • the signal indicating that the random access processing has succeeded is a mobile station apparatus that identifies the mobile station apparatus assigned to the mobile station apparatus by the base station apparatus It is a downlink control channel including an identifier.
  • the base station apparatus can allocate radio resources of a plurality of uplink component carriers and downlink component carriers using a signal indicating the success of the random access processing to the mobile station apparatus.
  • the mobile station device further includes a transmission processing unit that transmits an uplink component carrier signal to the base station device, and the random access control unit includes the random access control unit,
  • a transmission processing unit that transmits an uplink component carrier signal to the base station device
  • the random access control unit includes the random access control unit
  • the random access processing unit notifies the base station apparatus of information requesting connection setting to the base station apparatus, and indicates a signal indicating that the random access processing is successful.
  • a downlink component carrier corresponding to a link component carrier it recognizes that the random access processing is successful, while the transmission processing unit receives information different from the information requesting connection setting from the base station device.
  • the signal indicating that the random access process is successful is detected in any of the plurality of downlink component carriers assigned to the base station apparatus, the random access process is recognized as successful. It is characterized by that.
  • the base station apparatus can transmit a signal indicating the success of the random access process on an appropriate downlink component carrier according to the connection state of the mobile station apparatus.
  • the base station apparatus of the present invention is a radio communication system in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands.
  • the base station apparatus applied to the mobile station apparatus, wherein the signal indicating that the random access processing started by the mobile station apparatus is successful is transmitted on any of a plurality of downlink component carriers allocated to the mobile station apparatus
  • the base station apparatus can arbitrarily The message 4 can be transmitted on one or a plurality of downlink component carriers, and the degree of freedom of arrangement of the message 4 is increased.
  • the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink component carriers, radio resources of a plurality of uplink component carriers and downlink component carriers are allocated to the mobile station apparatus using a plurality of messages 4. be able to.
  • the signal indicating that the random access processing is successful is a mobile station apparatus that identifies the mobile station apparatus allocated to the mobile station apparatus by the base station apparatus It is a downlink control channel including an identifier.
  • the base station apparatus can allocate radio resources of a plurality of uplink component carriers and downlink component carriers using a signal indicating the success of the random access processing to the mobile station apparatus.
  • the random access control unit when the random access control unit is notified of information requesting connection setting from the mobile station apparatus, the random access control unit transmits a signal indicating that the random access process is successful.
  • the mobile station apparatus performs transmission control using a downlink component carrier corresponding to an uplink component carrier that has started random access processing, while the mobile station apparatus is notified of information different from information requesting connection setting. In this case, control is performed such that a signal indicating that the random access processing is successful is transmitted on one of a plurality of downlink component carriers assigned to the mobile station apparatus.
  • the base station apparatus can transmit a signal indicating the success of the random access process on an appropriate downlink component carrier according to the connection state of the mobile station apparatus.
  • the mobile station apparatus of the present invention is a radio communication system in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands.
  • a reception processing unit that receives signals of a plurality of downlink component carriers assigned by the base station device, and an uplink component carrier assigned by the base station device.
  • the random access process A random app that recognizes success It is characterized by comprising a Seth processing unit.
  • the random access processing is started on any one of the uplink component carriers, while the random access processing is performed on any of the plurality of downlink component carriers.
  • the base station apparatus recognizes that the random access processing is successful, so that the base station apparatus can transmit the message 4 on any one or a plurality of downlink component carriers. Increased freedom of placement.
  • the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink component carriers, radio resources of a plurality of uplink component carriers and downlink component carriers are allocated to the mobile station apparatus using a plurality of messages 4. be able to.
  • the mobile station apparatus further includes a transmission processing unit that transmits an uplink component carrier signal to the base station apparatus
  • the random access processing unit includes: When the station apparatus is notified of information requesting connection setting, and a signal indicating that the random access processing is successful is detected in a downlink component carrier corresponding to the uplink component carrier that started the random access processing. , While recognizing that the random access processing is successful, the transmission processing unit notifies the base station device of information different from the information requesting connection setting, and a signal indicating that the random access processing is successful.
  • the plurality of downlink component carriers assigned to the base station apparatus If detected in either Re is characterized in that to recognize that the random access process has succeeded.
  • the base station apparatus can transmit a signal indicating the success of the random access process on an appropriate downlink component carrier according to the connection state of the mobile station apparatus.
  • the wireless communication method of the present invention is a wireless communication method in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands. And the signal which shows that the random access process which the said mobile station apparatus started succeeded is transmitted by either of the some downlink component carrier allocated to the said mobile station apparatus, It is characterized by the above-mentioned.
  • the base station apparatus can arbitrarily The message 4 can be transmitted on one or a plurality of downlink component carriers, and the degree of freedom of arrangement of the message 4 is increased.
  • the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink component carriers, radio resources of a plurality of uplink component carriers and downlink component carriers are allocated to the mobile station apparatus using a plurality of messages 4. be able to.
  • the wireless communication method of the present invention is a wireless communication method in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands. And receiving signals of a plurality of downlink component carriers allocated by the base station apparatus, and randomly receiving one of the uplink component carriers allocated by the base station apparatus. While the access process is started, when a signal indicating that the random access process is successful is detected in any of the plurality of downlink component carriers, the random access process is recognized as being successful.
  • the random access processing is started on any one of the uplink component carriers, while the random access processing is performed on any of the plurality of downlink component carriers.
  • the base station apparatus recognizes that the random access processing is successful, so that the base station apparatus can transmit the message 4 on any one or a plurality of downlink component carriers. Increased freedom of placement.
  • the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink component carriers, radio resources of a plurality of uplink component carriers and downlink component carriers are allocated to the mobile station apparatus using a plurality of messages 4. be able to.
  • the base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands.
  • a control program for a base station apparatus applied to a radio communication system wherein a signal indicating that random access processing started by the mobile station apparatus is successful is transmitted to a plurality of downlink component carriers allocated to the mobile station apparatus It is characterized in that the process to be transmitted by either is commanded to be readable and executable by a computer.
  • the base station apparatus can arbitrarily The message 4 can be transmitted on one or a plurality of downlink component carriers, and the degree of freedom of arrangement of the message 4 is increased.
  • the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink component carriers, radio resources of a plurality of uplink component carriers and downlink component carriers are allocated to the mobile station apparatus using a plurality of messages 4. be able to.
  • the base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands.
  • a control program for a mobile station apparatus applied to a radio communication system the process for receiving signals of a plurality of downlink component carriers allocated by the base station apparatus, and an uplink allocated by the base station apparatus Among the component carriers, when starting a random access process in any one of the uplink component carriers, while detecting a signal indicating that the random access process is successful in any of the plurality of downlink component carriers, Random access processing It is characterized as the process recognizes that the Gong, a series of processes capable of reading the computer and executable so that it has a command of.
  • the random access processing is started on any one of the uplink component carriers, while the random access processing is performed on any of the plurality of downlink component carriers.
  • the base station apparatus recognizes that the random access processing is successful, so that the base station apparatus can transmit the message 4 on any one or a plurality of downlink component carriers. Increased freedom of placement.
  • the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink component carriers, radio resources of a plurality of uplink component carriers and downlink component carriers are allocated to the mobile station apparatus using a plurality of messages 4. be able to.
  • the base station apparatus and the mobile station apparatus can transmit and receive a signal indicating the success of the random access processing using a plurality of downlink component carriers assigned to the mobile station apparatus by the base station apparatus. Further, the base station apparatus can allocate radio resources of a plurality of uplink component carriers and downlink component carriers using a signal indicating the success of the random access processing to the mobile station apparatus.
  • FIG. 1 is a conceptual diagram of a wireless communication system according to the present embodiment.
  • the radio communication system includes mobile station apparatuses 1 A to 1 C and a base station apparatus 3.
  • the mobile station apparatuses 1A to 1C and the base station apparatus 3 perform communication using frequency band aggregation described later.
  • FIG. 1 shows a synchronization channel (Synchronization Channel; SCH), downlink pilot channel (or “Downlink ⁇ ⁇ ⁇ Reference Signal” in wireless communication (downlink) from the base station device 3 to the mobile station devices 1A to 1C.
  • DL RS downlink pilot channel
  • broadcast channel Physical Broadcast Channel; PBCH
  • downlink control channel Physical Downlink Control Channel
  • PDCCH Physical Downlink Control Channel
  • PDSCH downlink shared channel
  • multicast channel Physical Multicast ⁇ ⁇ Channel
  • PMCH Physical Multicast ⁇ ⁇ Channel
  • PMCH Physical Multicast ⁇ ⁇ Channel
  • PCFICH Physical Control Indicator Channel
  • HARQ indicator channel Physical Hybrid ARQ Indicator Channel
  • uplink reference signal (UL) RS”) in radio communication (uplink) from the mobile station apparatuses 1A to 1C to the base station apparatus 3.
  • An uplink control channel Physical Uplink Control Channel; PUCCH
  • an uplink shared channel Physical Uplink Shared Channel; PUSCH
  • a random access channel Physical Random Access Channel; PRACH.
  • the uplink reference signal is transmitted in a time multiplexed manner with the uplink shared channel or the uplink control channel, and is used as a demodulation reference signal (Demodulation Reference Signal) used for propagation path compensation of the uplink shared channel and the uplink control channel.
  • the mobile station apparatuses 1A to 1C are referred to as the mobile station apparatus 1.
  • FIG. 2 is a diagram illustrating an example of the frequency band aggregation processing according to the present embodiment.
  • the horizontal axis represents the frequency domain
  • the vertical axis represents the time domain.
  • the downlink subframe D1 is composed of subcarriers of three carrier elements (DCC-1: Downlink ComponentCarrier-1, DCC-2, and DCC-3) having a bandwidth of 20 MHz. ing.
  • DCC-1 Downlink ComponentCarrier-1
  • DCC-2 Downlink ComponentCarrier-1
  • DCC-2 Downlink ComponentCarrier-1
  • DCC-2 Downlink ComponentCarrier-1
  • DCC-2 Downlink ComponentCarrier-1
  • DCC-3 Downlink ComponentCarrier-1, DCC-2, and DCC-3
  • a downlink control channel indicated by a hatched area with a grid line
  • a downlink shared channel indicated by an area not hatched
  • the uplink subframe U1 is composed of three carrier elements (UCC-1: Uplink Component Carrier-1, UCC-2, UCC-3) having a bandwidth of 20 MHz.
  • the uplink control channel indicated by the hatched area with diagonal grid lines and the uplink indicated by the hatched area with the left diagonal line A shared channel and a random access channel indicated by a black hatched area are frequency-multiplexed and assigned.
  • the base station apparatus 3 arranges a signal in the downlink shared channel of one or a plurality of downlink carrier elements among three downlink carrier elements in a certain downlink subframe, and sends the signal to the mobile station apparatus 1.
  • the mobile station apparatus 1 arranges a signal in an uplink shared channel of one or a plurality of uplink carrier elements among three uplink carrier elements in a certain uplink subframe, and transmits the signal to the base station apparatus 3.
  • the mobile station apparatus 1 selects a random access channel of any one uplink carrier element among the three uplink carrier elements in a certain uplink subframe, and arranges a preamble on the selected random access channel. To the base station apparatus 3.
  • the mobile station apparatus 1 and the base station apparatus 3 transmit and receive the message 3 from the random access message 1 to the uplink carrier element and the downlink carrier element are paired.
  • Information related to the uplink carrier element paired with the link carrier element, and random access transmission such as information indicating the configuration of the random access channel and the transmission status of the random access in the uplink carrier element paired with the downlink carrier element Information is notified and the mobile station apparatus 1 is notified.
  • the base station apparatus 3 Is information indicating an uplink carrier element (UCC-1, UCC-2, UCC-3) paired with the downlink carrier element in each downlink carrier element (DCC-1, DCC-2, DCC-3), And information on random access transmission in the uplink carrier element paired with the downlink carrier element.
  • UCC-1, UCC-2, UCC-3 uplink carrier element
  • DCC-1, DCC-2, DCC-3 downlink carrier element
  • DCC-3 downlink carrier element
  • the base station apparatus 3 transmits a downlink carrier element for transmitting a random access message 4 (a signal indicating the success of the random access process) to the mobile station apparatus 1 that has transmitted the message 3. Switch according to the setting of the assigned downlink carrier element.
  • the base station device 3 transmits the message 4 using the downlink carrier element paired with the uplink carrier element that has received the message 1.
  • FIG. 3 is a schematic diagram illustrating an example of a configuration of a downlink radio frame according to the present embodiment.
  • FIG. 3 shows a configuration of a radio frame in a certain downlink carrier element.
  • the horizontal axis is the time domain
  • the vertical axis is the frequency domain.
  • the radio frame of the downlink carrier element is composed of a plurality of downlink physical resource block (PRB) pairs (for example, an area surrounded by a broken line in FIG. 3).
  • PRB downlink physical resource block
  • One downlink physical resource block pair is composed of two downlink physical resource blocks (PRB bandwidth ⁇ slot) that are continuous in the time domain.
  • One downlink physical resource block (unit surrounded by a thick line in FIG. 3) is composed of 12 subcarriers (15 kHz) in the frequency domain, and 7 OFDM symbols (71 ⁇ s) in the time domain. Consists of
  • a slot (0.5 ms) composed of 7 OFDM symbols (71 ⁇ s), a subframe (1 ms) composed of 2 slots, and a radio frame (10 ms composed of 10 subframes)
  • a plurality of downlink physical resource blocks are arranged according to the bandwidth of the downlink carrier element.
  • a unit composed of one subcarrier and one OFDM symbol is referred to as a downlink resource element (Resource (Element; RE).
  • each downlink subframe for example, a downlink control channel, a downlink shared channel, and a downlink reference signal are allocated.
  • the downlink control channel is arranged from the first OFDM symbol of the subframe, and the downlink shared channel is arranged in the remaining OFDM symbols of the subframe.
  • the downlink pilot channel is not shown in FIG. 3 for the sake of simplicity of explanation, but the downlink pilot channel is distributed in the frequency domain and the time domain.
  • the downlink control channel includes downlink control information (Downlink grant), which is information used for communication control, such as downlink grant (also referred to as “Downlink grant” or “Downlink assignment”) and uplink grant (Uplink grant).
  • Downlink grant is information used for communication control
  • Downlink grant also referred to as “Downlink grant” or “Downlink assignment”
  • Uplink grant uplink grant
  • Control Information (DCI) signal is arranged.
  • the downlink grant includes information indicating a modulation scheme for the downlink shared channel, information indicating a coding scheme, information indicating radio resource allocation, information on HARQ (Hybrid Automatic Repeat Request), and the like.
  • the uplink grant includes information indicating a modulation scheme for the uplink shared channel, information indicating a coding scheme, information indicating radio resource allocation, HARQ information, and the like.
  • HARQ refers to, for example, whether the mobile station apparatus 1 (base station apparatus 3) succeeds in decoding data information (ACK (ACKnowledgement; positive response) / NACK (Negative-ACKnowledgement; negative response))) to the base station apparatus 3 ( Mobile station apparatus 1), and when the mobile station apparatus 1 (base station apparatus 3) cannot decode the data information due to an error (NACK), the base station apparatus 3 (mobile station apparatus 1) retransmits the signal, and the mobile station
  • ACK acknowledgement; positive response
  • NACK Negative-ACKnowledgement; negative response
  • a cyclic redundancy check (Cyclic Redundancy Check; CRC) code (error detection code) generated from the bit sequence of the downlink control information and a sequence obtained by performing an exclusive OR with an identifier are added. Furthermore, the mobile station apparatus 1 can obtain a cyclic redundancy check code by performing an exclusive OR with the same identifier on this sequence. That is, the mobile station apparatus 1 can determine whether the downlink control channel is transmitted to the own apparatus from the identifier included in the downlink control channel.
  • CRC Cyclic Redundancy Check
  • the mobile station device identifier Cell-Radio Network Temporary Identifier; C-RNTI
  • the mobile station device 1 performs downlink control. It is determined that the channel indicates the allocation of the radio resource of the downlink shared channel addressed to the own device.
  • the mobile station apparatus 1 when the mobile station apparatus 1 includes a random access identifier (Random Access-Radio Network Temporary Identifier; RA-RNTI) corresponding to the radio resource of the random access channel to which the preamble is transmitted, the mobile station The device 1 determines that the downlink control channel indicates radio resource allocation of the downlink shared channel that may include a random access response (Random Access Response) to the preamble transmitted by the device 1.
  • RA-RNTI Random Access-Radio Network Temporary Identifier
  • the downlink shared channel a signal of data information (transport block; Transport Block) is arranged.
  • transport block transport Block
  • the downlink shared channel indicated by the downlink grant and the downlink grant is allocated to the same downlink carrier element in the same subframe.
  • the present invention is not limited to this, and the mobile station apparatus 1 identifies a downlink carrier element in which a downlink shared channel is arranged from the downlink grant, and assigns radio resources by the downlink grant and the downlink grant.
  • the indicated downlink shared channel may be arranged in different downlink carrier elements.
  • FIG. 4 is a schematic diagram illustrating an example of a configuration of an uplink radio frame according to the present embodiment.
  • FIG. 4 shows a configuration of a radio frame in an uplink carrier element.
  • the horizontal axis is the time domain
  • the vertical axis is the frequency domain.
  • the radio frame of the uplink carrier element is composed of a plurality of uplink physical resource block pairs (for example, an area surrounded by a broken line in FIG. 4).
  • One uplink physical resource block pair is composed of two uplink physical resource blocks (PRB bandwidth ⁇ slot) that are continuous in the time domain.
  • One uplink physical resource block (unit surrounded by a thick line in FIG. 4) is composed of 12 subcarriers (15 kHz) in the frequency domain, and 7 SC-FDMA symbols ( 71 ⁇ s).
  • a slot (0.5 ms) composed of 7 SC-FDMA symbols (71 ⁇ s)
  • a subframe (1 ms) composed of 2 slots
  • a radio frame composed of 10 subframes (10ms).
  • a plurality of uplink physical resource blocks are arranged according to the bandwidth of the uplink carrier element.
  • a unit composed of one subcarrier and one SC-FDMA symbol is referred to as an uplink resource element.
  • a random access channel (not shown) is composed of a bandwidth of 72 uplink resource elements (corresponding to six physical resource blocks) in the frequency domain, and one of three subframes in the time domain. To be placed on the radio resource.
  • the subcarrier interval of the random access channel is 1.25 kHz or 7.5 kHz, which is different from the subcarrier interval (15 kHz) of the uplink control channel or the uplink shared channel.
  • a plurality of radio resources of the random access channel are allocated in the radio frame. The specific radio resource allocation and configuration of the random access channel are notified to the mobile station apparatus 1 as broadcast information.
  • a preamble is arranged so that the mobile station apparatus 1 and the base station apparatus 3 are synchronized.
  • the preamble includes a signature which is a signal pattern representing information, and several tens of types of signatures are prepared to represent several bits of information.
  • FIG. 5 is a schematic diagram showing an example of the configuration of the signature according to the present embodiment.
  • the vertical axis represents the signature number.
  • the signature 1 to 24 is a small message 3 transmission size
  • the signature 25 to 48 is a message 3 transmission size is large.
  • Each mobile station apparatus 1 selects at random.
  • 49 to 64 are signatures selected by the base station device 3 and notified to the mobile station device 1.
  • the signature when the message size is small is usually selected when the characteristics of the propagation path are poor (or the distance between the mobile station apparatus 1 and the base station apparatus 3 is long), and the signature when the message size is large is propagated. This is selected when the characteristics of the road are good (or the distance between the mobile station apparatus 1 and the base station apparatus 3 is short).
  • the uplink control channel is allocated to uplink physical resource block pairs (regions hatched with left oblique lines) at both ends of the bandwidth of the uplink carrier element. Note that the uplink control channel is spread by a spread code in the frequency domain and the time domain, and is code-multiplexed.
  • the uplink control channel includes communication quality information such as channel quality information indicating downlink channel quality, a scheduling request (SR: Scheduling Request) indicating a request for uplink radio resource allocation, and ACK / NACK for the downlink shared channel.
  • SR Scheduling Request
  • a signal of uplink control information (Uplink Control Information; UCI) which is information used for control is arranged.
  • the uplink shared channel is allocated to an uplink physical resource block pair (an area that is not hatched) other than the uplink control channel and the random access channel.
  • a signal of data information transport block; Transport Block
  • the uplink shared channel whose radio resource allocation is indicated by the uplink grant is a downlink carrier element in which the mobile station apparatus 1 receives the uplink grant in a subframe after a predetermined period.
  • corresponding uplink carrier elements For example, in FIG. 2, an uplink grant indicating radio resource allocation of the uplink shared channel of UCC-1 is arranged in the downlink control channel of DCC-1.
  • the present invention is not limited to this, and the mobile station apparatus 1 identifies an uplink carrier element in which an uplink shared channel is arranged from the uplink grant, and assigns radio resources by the uplink grant and the uplink grant.
  • the indicated uplink shared channel may be arranged in a set of different uplink carrier elements and downlink carrier elements.
  • a demodulation reference signal (not shown) is arranged so as to be time-multiplexed with radio resources of the uplink shared channel and the uplink control channel.
  • a sounding reference signal (not shown) is arranged in the last SC-FDMA symbol in a subframe having a period set by the base station apparatus 3 for each mobile station apparatus 1 in the time domain, and in the frequency domain, the base station apparatus 3 Are arranged in the frequency region set for each mobile station apparatus 1.
  • FIG. 6 is a schematic block diagram illustrating a configuration of the base station device 3 according to the present embodiment.
  • the base station apparatus 3 includes an upper layer processing unit 101, a preamble detection unit 103, a synchronization timing measurement unit 105, a control unit 107, a reception processing unit 109, a plurality of reception antennas, a transmission processing unit 111, and a plurality of Transmission antennas.
  • the upper layer processing unit 101 includes a radio resource control unit 1011 and a random access control unit 1012.
  • the receiving antenna and the transmitting antenna are configured differently, but the antenna may be shared by using a thyristor or the like that switches the input and output of signals.
  • the upper layer processing unit 101 outputs data information for each downlink carrier element to the transmission processing unit 111. Further, the upper layer processing unit 101 performs processing of a packet data integration protocol (PDCP: Packet Data Convergence Protocol) layer, a radio link control (RLC: Radio Link Control) layer, and a radio resource control (RRC: Radio Resource Control) layer. .
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • RRC Radio Resource Control
  • the radio resource control unit 1011 of the upper layer processing unit 101 manages various setting information, communication status, buffer status, and the like of each mobile station apparatus 1.
  • the random access control unit 1012 of the upper layer processing unit 101 performs control related to random access of each mobile station apparatus 1.
  • the radio resource control unit 1011 included in the upper layer processing unit 101 is configured so that the number of downlink carrier elements and uplink carrier elements that can be used by the base station apparatus 3 for radio communication, and the mobile station apparatus 1 simultaneously.
  • a plurality of uplink carrier elements and downlink carrier elements are allocated to the mobile station apparatus 1 in accordance with the number of downlink carrier elements and uplink carrier elements that can be transmitted or received.
  • the radio resource control unit 1011 generates information acquired in each channel of each downlink carrier element or acquires it from a higher node, and outputs the information to the transmission processing unit 111 for each downlink carrier element. For example, the radio resource control unit 1011 generates a random access response that is a kind of downlink control information and data information, and outputs the random access response to the transmission processing unit 111.
  • the radio resource control unit 1011 assigns the radio resource in which the mobile station device 1 arranges the uplink shared channel (data information) among the radio resources of the uplink carrier element allocated to the mobile station device 1 to the mobile station device 1. Assign to. Also, the radio resource control unit 1011 allocates radio resources for arranging the downlink shared channel (data information) for the mobile station apparatus 1 from among the radio resources of the downlink carrier elements allocated to the mobile station apparatus 1. The radio resource control unit 1011 generates a downlink grant and an uplink grant indicating the radio resource allocation, and transmits the downlink grant and the uplink grant to the mobile station apparatus 1 via the transmission processing unit 111. Also, the radio resource control unit 1011 includes the C-RNTI assigned to the mobile station apparatus 1 corresponding to the downlink grant or the uplink grant in the downlink grant and the uplink grant.
  • the radio resource control unit 1011 selects one downlink carrier element based on the control information from the random access control unit 1012 and arranges a random access response from the radio resources in the selected downlink carrier element. Allocate resources. Also, the radio resource control unit 1011 includes the RA-RNTI input from the random access control unit 1012 in the downlink grant indicating the radio resource allocation.
  • the radio resource control unit 1011 selects one uplink carrier element based on the control information from the random access control unit 1012 and arranges the message 3 from the radio resources in the selected uplink carrier element. Assign. Also, the radio resource control unit 1011 generates an uplink grant indicating the radio resource allocation, includes it in a random access response, and transmits it to the mobile station apparatus 1 via the transmission processing unit 111.
  • the uplink grant included in the random access response does not include the cyclic redundancy check code and the mobile station apparatus identifier.
  • the random access response includes a synchronization timing shift amount for each of a plurality of signatures input from the random access control unit 1012, a Temporary C-RNTI, and an uplink grant generated by the radio resource control unit 1011.
  • the radio resource control unit 1011 receives the uplink control information (ACK / NACK, channel quality information, scheduling request) notified from the mobile station apparatus 1 through the uplink control channel, the buffer status of the mobile station apparatus 1, and the radio Based on various setting information of each mobile station apparatus 1 set by the resource control unit 1011, control information is generated to control the reception processing unit and the transmission processing unit, and is output to the control unit.
  • uplink control information ACK / NACK, channel quality information, scheduling request
  • the random access control unit 1012 included in the upper layer processing unit 101 includes a random access channel configuration (such as radio resource allocation of the random access channel) and information indicating a random access transmission status (random access load), etc. Broadcast information including information related to random access, random access response, contention resolution, and the like are generated, and the control information is output to the radio resource control unit 1011 so as to be output to the transmission processing unit 111.
  • the random access control unit 1012 instructs the mobile station apparatus 1 to transmit a preamble when there is data information to be transmitted to the mobile station apparatus 1 but the synchronization between the base station apparatus 3 and the mobile station apparatus 1 is out of sync. Decide what to do. In this case, the random access control unit 1012 generates downlink control information that instructs the mobile station apparatus 1 to transmit a preamble, and outputs the control information to the radio resource control unit 1011 so as to output to the transmission processing unit 111.
  • the random access control unit 1012 sends the signature number and the synchronization timing shift amount to the radio resource control unit 1011 based on the random access channel information, the signature number, and the synchronization timing shift amount input from the preamble detection unit 103.
  • the control information is output to the radio resource control unit 1011 so that the radio resource control unit 1011 generates a random access response.
  • the random access control unit 1012 calculates RA-RNTI from information on the random access channel that has detected the signature input from the preamble detection unit 103, and outputs the RA-RNTI to the radio resource control unit 1011.
  • the random access control unit 1012 selects the downlink carrier element paired with the uplink carrier element in which the preamble is detected based on the information on the random access channel that has detected the signature input from the preamble detection unit 103, and selects the selected downlink carrier element. Control information is output to the radio resource control unit 1011 so that a random access response is transmitted by the link carrier element. Further, the random access control unit 1012 selects an uplink carrier element in which the preamble is detected, and assigns a radio resource for transmitting the message 3 from the radio resources of the selected uplink carrier element, so that the radio resource control unit 1011 Output control information.
  • the random access control unit 1012 identifies the mobile station apparatus 1 that has transmitted the message 3 from the C-RNTI that identifies the mobile station apparatus 1 included in the message 3, and uses the downlink carrier element assigned to the mobile station apparatus 1. Control information is output to the radio resource control unit 1011 so as to transmit contention resolution (a signal indicating the success of the random access process).
  • the random access control unit 1012 includes information requesting connection setting such as a connection request message (RRCConnectionRequest message) or a connection reset request message (RRCConnectionReestablishmentRequest message) in the message 3, and the mobile station apparatus. If the C-RNTI assigned to 1 cannot be detected, the mobile station device 1 that transmitted the message 3 cannot be identified, and therefore, the contention resolution is transmitted by the uplink carrier element that detected the preamble and the pair of downlink carrier elements.
  • the control information is output to the radio resource control unit 1011.
  • the connection reset request message may include, for example, a C-RNTI assigned to another base station apparatus 3, but the C-RNTI cannot be detected by the random access control unit 1012, and higher-level processing is performed. Part detects. A detailed random access procedure will be described later.
  • the control unit 107 generates a control signal for controlling the reception processing unit 109 and the transmission processing unit 111 based on the control information from the higher layer processing unit 101.
  • the control unit 107 outputs the generated control signal to the reception processing unit 109 and the transmission processing unit 111 to control the reception processing unit 109 and the transmission processing unit 111.
  • the reception processing unit 109 separates, demodulates and decodes the reception signal received from the mobile station apparatus 1 via the reception antenna according to the control signal input from the control unit, and outputs the decoded information to the higher layer processing unit 101. . Also, the reception processing unit 109 outputs the separated uplink reference signal to the synchronization timing measurement unit 105 and outputs the separated random access channel to the preamble detection unit 103.
  • the reception processing unit 109 converts the signal of each uplink carrier element received via each reception antenna to an intermediate frequency (down-conversion), removes unnecessary frequency components, and appropriately sets the signal level.
  • the amplification level is controlled so as to be maintained at, and quadrature demodulation is performed based on the in-phase component and the quadrature component of the received signal, and the quadrature demodulated analog signal is converted into a digital signal.
  • the reception processing unit 109 removes a portion corresponding to a guard interval (GI) from the converted digital signal.
  • the reception processing unit 109 performs fast Fourier transform (FFT) on the signal from which the guard interval is removed, and extracts a frequency domain signal.
  • FFT fast Fourier transform
  • the reception processing unit 109 separates the extracted signal into signals arranged in a random access channel, an uplink control channel, an uplink shared channel, a demodulation reference signal, and a sounding reference signal for each uplink carrier element. Further, since the uplink control channel is code-multiplexed, the reception processing unit 109 performs despreading on the uplink control channel and separates it. This separation is performed based on radio resource allocation information that is determined in advance by the base station device 3 and notified to each mobile station device 1. Also, the reception processing unit 109 obtains an estimated value of the propagation path from the separated uplink reference signal, and compensates the propagation path of the uplink control channel and the uplink shared channel. The reception processing unit 109 outputs the separated random access channel to the preamble detection unit 103, and outputs the separated uplink reference signal to the synchronization timing measurement unit 105.
  • the reception processing unit 109 performs inverse discrete Fourier transform (Inverse Discrete Fourier Transform; IDFT) on the uplink shared channel, acquires modulation symbols, and performs two phases for each of the modulation symbols of the uplink control channel and the uplink shared channel.
  • IDFT inverse discrete Fourier transform
  • Shift key modulation (Binary Phase Shift Keying; BPSK), Phase shift keying (Quadrature Phase Shift Keying; QPSK), 16-value quadrature amplitude modulation (16 Quadrature-Amplitude Modulation; 16QAM), 64-value quadrature amplitude modulation (64 Quadrature-Amplitude Modulation; 64QAM) or the like, or the base station apparatus 3 demodulates the received signal using a modulation scheme notified in advance to each mobile station apparatus 1 using an uplink grant.
  • BPSK Binary Phase Shift Keying
  • QPSK Quadrature Phase Shift Keying
  • 16QAM 16-value quadrature amplitude modulation
  • 64QAM 64 Quadrature-Amplitude Modulation
  • the reception processing unit 109 sets the demodulated encoded bits of the uplink control channel and the uplink shared channel to the mobile station apparatus 1 in the predetermined encoding method or the base station apparatus 3 uplinks to the mobile station apparatus 1. Decoding is performed at a coding rate notified in advance by the grant, and data information and uplink control information are output to the upper layer processing unit 101.
  • the reception processing unit 109 measures the uplink reference signal received from the mobile station apparatus 1, the power of the received signal of the uplink shared channel, etc., measures the reception quality of the channel of the uplink carrier element, and the higher layer processing unit 101 Output to.
  • the preamble detection unit 103 detects a plurality of preambles from the radio resources of the random access channel input from the reception processing unit 109, calculates a synchronization timing shift amount from each preamble, and detects information on the random access channel and the signature And the shift amount of the synchronization timing are output to the upper layer processing unit 101. Further, the upper layer processing unit 101 is also notified of the random access transmission status of the mobile station apparatus 1 from the number of received preambles periodically.
  • the synchronization timing measurement unit 105 measures the uplink reference signal input from the reception processing unit 109 to maintain synchronization, measures the synchronization timing shift, and reports the measurement result to the higher layer processing unit 101.
  • the transmission processing unit 111 generates a downlink reference signal according to the control signal input from the control unit 107, encodes and modulates data information and downlink control information input from the higher layer processing unit 101, and It arrange
  • the transmission processing unit 111 performs turbo coding on the downlink control information and data information of each downlink carrier element input from the higher layer processing unit 101 according to the control signal input from the control unit 107.
  • the mobile station apparatus 1 generates a known sequence as a downlink reference signal, which is obtained by a predetermined rule based on a cell identifier (Cell ID) for identifying the base station apparatus 3, and the downlink control channel And the downlink shared channel and the downlink reference signal are multiplexed.
  • Cell ID cell identifier
  • the transmission processing unit 111 performs inverse fast Fourier transform (IFFT) on the multiplexed modulation symbols, performs modulation in the OFDM scheme, adds a guard interval to the OFDM symbol that has been OFDM-modulated, and performs baseband digital Generate a signal, convert the baseband digital signal to an analog signal, generate in-phase and quadrature components of the intermediate frequency from the analog signal, remove excess frequency components for the intermediate frequency band, and increase the signal of the intermediate frequency The signal is converted (up-converted) into a frequency signal, an extra frequency component is removed, the power is amplified, and the signal is output to the transmitting antenna and transmitted.
  • IFFT inverse fast Fourier transform
  • FIG. 7 is a schematic block diagram showing the configuration of the mobile station apparatus 1 according to this embodiment.
  • the mobile station apparatus 1 includes an upper layer processing unit 201, a control unit 203, a reception processing unit 205, a plurality of reception antennas, a preamble generation unit 207, a transmission processing unit 209, and a plurality of transmission antennas. Consists of.
  • the upper layer processing unit 201 includes a radio resource control unit 2011 and a random access processing unit 2012.
  • the receiving antenna and the transmitting antenna are configured differently. However, the antenna may be shared by using a thyristor or the like that switches the input / output of a signal.
  • the upper layer processing unit 201 outputs data information for each uplink carrier element generated by a user operation or the like to the transmission processing unit 209. Further, the upper layer processing unit 201 performs processing of the packet data integration protocol layer, the radio link control layer, and the radio resource control layer.
  • the radio resource control unit 2011 included in the upper layer processing unit 201 manages various setting information, communication status, buffer status, and the like of the own device.
  • the random access processing unit 2012 of the upper layer processing unit 201 performs control related to the random access of the own device.
  • the radio resource control unit 2011 included in the higher layer processing unit 201 manages various setting information such as a downlink carrier element, an uplink carrier element, and C-RNTI to which the device itself is assigned. Also, the radio resource control unit 2011 generates information to be arranged in each channel of each uplink carrier element and outputs the information to the transmission processing unit 209 for each uplink carrier element. For example, when the radio resource of the message 3 is assigned by the random access response, the radio resource control unit 2011 generates information to be transmitted by the message 3 and outputs the information to the transmission processing unit 209.
  • the radio resource control unit 2011 includes downlink control information (for example, downlink grant and uplink grant) notified from the base station device 3 through the downlink control channel, and an uplink grant for the message 3 notified by random access, Based on various setting information of the own device managed by the radio resource control unit 2011, control information is generated to control the reception processing unit 205 and the transmission processing unit 209, and is output to the control unit 203.
  • downlink control information for example, downlink grant and uplink grant
  • the random access processing unit 2012 included in the higher layer processing unit 201 manages information related to random access such as information indicating the configuration of the random access channel notified from the base station device 3 and the transmission status of random access. ing.
  • Random access processing unit 2012 receives downlink control information instructing its own device to start random access from base station device 3, and there is data information to be transmitted in the uplink. If no link radio resource is allocated, random access is started.
  • the random access processing unit 2012 determines a signature range to be selected from downlink channel quality information, etc., randomly selects a signature from the selected signature range, and further transmits an uplink carrier for a preamble Select radio resources for elements and random access channels. Further, the random access processing unit 2012 outputs control information to the control unit 203 so that the preamble generation unit 207 generates a preamble including the selected signature, and the transmission processing unit 209 uses the radio resource of the selected random access channel. The control information is output to the control unit 203 so as to transmit.
  • the random access processing unit 2012 calculates the RA-RNTI corresponding to the radio resource that transmitted the preamble.
  • the random access processing unit 2012 also calculates the RA-RNTI calculated by the random access response reception period which is a predetermined period after transmitting the preamble, the uplink carrier element transmitting the preamble and the downlink carrier element paired with the preamble.
  • the control information is output to the control unit 203 so that the reception processing unit 205 monitors the downlink grant including.
  • the random access processing unit 2012 detects the signature included in the preamble transmitted by the own device from the random access response in which the downlink grant including the calculated RA-RNTI indicates radio resource allocation, and corresponds to the detected signature. An uplink grant indicating the amount of synchronization timing shift, Temporary C-RNTI, and message 3 radio resource allocation is acquired. Further, the random access processing unit 2012 outputs control information to the control unit 203 so as to adjust the transmission timing of the uplink signal of the transmission processing unit 209 based on the amount of synchronization timing shift.
  • the random access processing unit 2012 outputs the uplink grant addressed to the own device included in the random access response to the radio resource control unit 2011. Further, the random access processing unit 2012 outputs control information to the radio resource control unit 2011 so as to generate the C-RNTI assigned to the base station apparatus 3 in the message 3.
  • the random access processing unit 2012 monitors the contention resolution using the downlink carrier element assigned to the base station apparatus 3 during the contention resolution reception period that is a predetermined period after the message 3 is transmitted ( When the contention resolution is detected by at least one downlink carrier element, it is determined that the random access is successful, and the process related to the random access is terminated.
  • the mobile station device 1 In the case of initial access when the mobile station device 1 starts wireless communication with the base station device 3, the mobile station device 1 detects a radio link failure (Radio Link Failure; RLF), or another base station device 3
  • RLF Radio Link Failure
  • the random access processing unit 2012 controls the radio resource control unit 2011 to generate information requesting connection setting such as a connection request message or a connection reset request message as the message 3. Output information.
  • the random access processing unit 2012 controls the contention resolution reception period and the reception processing unit 205 to monitor the contention resolution in the downlink carrier element paired with the uplink carrier element that transmitted the preamble. Control information is output to 203. A detailed random access procedure will be described later.
  • the control unit 203 generates a control signal for controlling the reception processing unit 205, the preamble generation unit 207, and the transmission processing unit 209 based on the control information from the higher layer processing unit 201.
  • the control unit 203 outputs the generated control signal to the reception processing unit 205, preamble generation unit 207, and transmission processing unit 209, and controls the reception processing unit 205, preamble generation unit 207, and transmission processing unit 209.
  • the reception processing unit 205 demodulates and decodes the reception signal received from the base station apparatus 3 via the reception antenna according to the control signal input from the control unit 203, and outputs the decoded information to the higher layer processing unit 201.
  • the reception processing unit 205 generates channel quality information based on the detected reception quality of the downlink reference signal and outputs the channel quality information to the higher layer processing unit 201 and the transmission processing unit 209.
  • the reception processing unit 205 demodulates and decodes the reception signal received from the base station apparatus 3 via the reception antenna according to the control signal input from the control unit 203, and outputs the decoded information to the higher layer processing unit 201. . Also, the reception processing unit 205 generates channel quality information based on the detected reception quality of the downlink reference signal and outputs the channel quality information to the higher layer processing unit 201 and the transmission processing unit 209.
  • the reception processing unit 205 separates the extracted signal into signals arranged in the downlink control channel, the downlink shared channel, and the downlink reference signal for each downlink carrier element. This separation is performed based on radio resource allocation information notified by the downlink grant. Further, the reception processing unit 205 obtains an estimated value of the propagation path from the separated downlink reference signal, and compensates the propagation path of the downlink control channel and the downlink shared channel. Also, the reception processing unit 205 generates channel quality information based on the reception quality of the separated downlink reference signal and outputs the channel quality information to the higher layer processing unit 201 and the transmission processing unit 209.
  • the reception processing unit 205 demodulates the QPSK modulation scheme for the downlink control channel, and the own device includes the downlink grant and the uplink grant including the C-RNTI assigned to the base station device 3, and the own device.
  • the downlink grant including RA-RNTI corresponding to the radio resource of the random access channel that transmitted the preamble is monitored, and decoding is attempted.
  • the reception processing unit 205 outputs the decoded downlink control information to the higher layer processing unit 201.
  • the reception processing unit 205 performs demodulation of the modulation scheme notified by the downlink grant such as QPSK, 16QAM, and 64QAM on the downlink shared channel, and decodes the coding rate notified by the downlink grant.
  • the decrypted data information is output to the upper layer processing unit 201.
  • the preamble generation unit 207 generates a preamble including the signature selected by the random access processing unit 2012 according to the control signal input from the control unit 203, and outputs the preamble to the transmission processing unit 209.
  • the transmission processing unit 209 generates an uplink reference signal according to the control signal input from the control unit 203, the data information input from the higher layer processing unit 201, the channel quality information input from the reception processing unit 205, Is encoded and modulated, arranged in the uplink shared channel and the uplink control channel, multiplexed with the generated uplink reference signal, and transmitted to the base station apparatus 3 via the transmission antenna. Also, the transmission processing unit 209 places the preamble input from the preamble generation unit 207 in a random access channel according to the control signal input from the control unit 203, and transmits the preamble to the base station apparatus 3 via the transmission antenna.
  • the transmission processing unit 209 receives the uplink control information and data information of each uplink carrier element input from the higher layer processing unit 201 and the reception processing unit 205 as control signals input from the control unit 203. Accordingly, encoding such as turbo encoding, convolutional encoding, and block encoding is performed, and the encoded bits are modulated by a modulation scheme such as BPSK, QPSK, 16QAM, or 64QAM.
  • a modulation scheme such as BPSK, QPSK, 16QAM, or 64QAM.
  • the transmission processing unit 209 generates, as an uplink reference signal, a sequence known by the base station device 3 that is obtained by a predetermined rule based on a cell identifier for identifying the base station device 3 or the like.
  • the transmission processing unit 209 spreads the modulation symbols of the uplink control channel with codes, rearranges the modulation symbols of the uplink shared channel in parallel, and then performs a discrete Fourier transform (DFT) to generate the generated uplink reference Multiplex with signal. Further, the transmission processing unit 209 arranges the preamble input from the preamble generation unit 207 in the random access channel.
  • DFT discrete Fourier transform
  • the transmission processing unit 209 performs inverse fast Fourier transform on the multiplexed signal, performs SC-FDMA modulation, adds a guard interval to the SC-FDMA modulated SC-FDMA symbol, and generates a baseband digital signal Convert the baseband digital signal to an analog signal, generate in-phase and quadrature components of the intermediate frequency from the analog signal, remove excess frequency components for the intermediate frequency band, and convert the intermediate-frequency signal to a high-frequency signal Is converted (up-converted) to remove excess frequency components, power-amplified, and output to a transmission antenna for transmission.
  • FIG. 8 is a diagram illustrating an example of random access of the wireless communication system according to the present embodiment.
  • the mobile station apparatus 1 connects the base station apparatus 3 with downlink carrier elements (DCC-1, DCC-2, DCC-3) and uplink carrier elements (UCC-1, UCC-) as shown in FIG. 2, UCC-3) is assigned, and mobile station apparatus 1 transmits message 1 using UCC-1.
  • the mobile station apparatus 1 determines an uplink carrier element for transmitting a preamble, a radio resource of a random access channel, a range of signatures to be selected, and a signature range to be selected from information on channel quality of the downlink carrier elements.
  • a signature is randomly selected from the above range, and a preamble is transmitted on the random access channel of the selected uplink carrier element (for example, UCC-1) (message 1 (N1)).
  • the base station apparatus 3 When the base station apparatus 3 detects the preamble from the mobile station apparatus 1 using UCC-1, the base station apparatus 3 calculates a synchronization timing shift between the mobile station apparatus 1 and the base station apparatus 3 from the preamble.
  • Mobile station apparatus 1 that performs scheduling for transmitting message 3 (designation of uplink radio resource allocation, transmission format (message size), etc.), generates an uplink grant indicating the scheduling result, and transmits the preamble Assign Temporary C-RNTI.
  • the base station apparatus 3 generates a random access response including the generated uplink grant, synchronization timing shift information, Temporary C-RNTI assigned to the mobile station apparatus 1, and the number of the detected preamble signature, and detects the preamble.
  • the UCC-1 that has been transmitted transmits on the corresponding downlink shared channel of DCC-1. Further, the base station apparatus 3 transmits the downlink shared channel including the RA-RNTI corresponding to the radio resource of the random access channel in which the preamble is detected in the downlink grant indicating the allocation of the radio resource of the random access response.
  • the downlink grant is transmitted using the same DCC-1 as (Message 2 (N2)).
  • the downlink control channel allocates radio resources.
  • the mobile station apparatus 1 extracts a response including the signature number included in the preamble transmitted by the mobile apparatus from the random access response, and corrects the synchronization timing shift.
  • the mobile station apparatus 1 includes the C-RNTI notified in advance from the base station apparatus 3 in the uplink shared channel with the UCC-1 radio resource to which radio resources are allocated by the uplink grant included in the random access.
  • the message is transmitted using the same UCC-1 as the message 1 (message 3 (N3)).
  • the base station apparatus 3 When the base station apparatus 3 receives the message 3 from the mobile station apparatus 1 by the UCC-1, the base station apparatus 3 determines whether a collision has occurred between the mobile station apparatuses 1 using the C-RNTI included in the received message 3 Is transmitted to the mobile station apparatus 1 (message 4 (N4)).
  • the base station device 3 When the base station device 3 receives the message 3 from the mobile station device 1 at UCC-1 and the mobile station device 1 itself has started random access, the base station device 3 moves with the C-RNTI assigned as follows: A radio resource is allocated to the station apparatus 1. As an allocation method, radio resources of one or more uplink carrier elements are allocated from among a plurality of uplink carrier elements (UCC-1, UCC-2, UCC-3) allocated by the base station apparatus 3. Further, the base station apparatus 3 includes one or more of a plurality of downlink carrier elements (DCC-1, DCC-2, DCC-3) allocated to the mobile station apparatus 1 by including C-RNTI in the uplink grant. An uplink grant is allocated to the downlink carrier element of
  • the mobile station apparatus 1 When the mobile station apparatus 1 has started random access according to its own determination, the mobile station apparatus 1 has a plurality of downlink carrier elements (DCC-1, DCC-2, DCC-3) to which the own apparatus is allocated. To monitor the uplink grant including C-RNTI. The mobile station apparatus 1 notifies the uplink grant in advance using at least one of the plurality of downlink carrier elements (DCC-1, DCC-2, DCC-3) assigned to the base station apparatus 3. If it is confirmed that the received C-RNTI is included, it is determined that the contention resolution is successful, and the random access is terminated.
  • DCC-1, DCC-2, DCC-3 downlink carrier elements assigned to the base station apparatus 3.
  • radio resources are allocated to the mobile station apparatus 1 to which C-RNTI is allocated as follows.
  • a plurality of uplink carrier elements (UCC-1, UCC-2, UCC-3) and a plurality of downlink carrier elements (DCC-1, DCC-2, DCC-3) allocated by the base station apparatus 3 are used. ) To allocate radio resources of one or more uplink or downlink carrier elements.
  • the base station apparatus 3 includes C-RNTI in the uplink grant or the downlink grant, and includes a plurality of downlink carrier elements (DCC-1, DCC-2, DCC-3) allocated to the mobile station apparatus 1.
  • DCC-1, DCC-2, DCC-3) allocated to the mobile station apparatus 1.
  • An uplink grant or a downlink grant is arranged in one or more downlink carrier elements from the inside.
  • the mobile station apparatus 1 When the mobile station apparatus 1 is instructed to start random access using the downlink control channel notified from the base station apparatus 3, the mobile station apparatus 1 has a plurality of downlink carrier elements (DCC- 1, DCC-2, DCC-3) monitor the uplink grant including C-RNTI and the downlink grant.
  • the mobile station apparatus 1 is an uplink grant or at least one downlink carrier element of the downlink carrier elements (DCC-1, DCC-2, DCC-3) to which the mobile station apparatus 1 is allocated.
  • the mobile station device 1 In the case of initial access when the mobile station device 1 starts wireless communication with the base station device 3, the mobile station device 1 detects a radio link failure (Radio Link Failure; RLF), or another base station device 3 Mobile station apparatus 1 transmits information requesting connection setting such as a connection request message or a connection reset request message to base station apparatus 3 as message 3.
  • Information for requesting connection setting includes information for identifying the mobile station apparatus 1.
  • the base station device 3 generates a UE contention resolution identity including a part or all of the information for identifying the mobile station device 1 included in the message 3, and is a downlink paired with the uplink carrier element that has detected the preamble.
  • a radio resource for allocating a downlink shared channel including UE contention resolution identity is allocated from the radio resources of the carrier element, and the Temporary C-RNTI allocated in message 2 is transmitted to the downlink grant.
  • the mobile station apparatus 1 monitors the downlink grant including the Temporary C-RNTI with the downlink carrier element paired with the uplink carrier element that transmitted the preamble.
  • the mobile station apparatus 1 confirms the downlink grant including the Temporary C-RNTI notified from the base station apparatus 3 in the message 2
  • the downlink grant is included in the downlink shared channel indicating the radio resource allocation.
  • Check the contention resolution identity and if the UE contention resolution identity confirms part or all of the information for identifying the local device sent by the device in message 3, it is determined that the contention resolution was successful. End random access.
  • the mobile station device 1 does not receive a random access response including the preamble signature number transmitted by the mobile station device 1 within the random access response reception period, or within the contention resolution reception period.
  • the process starts again from the transmission of the preamble.
  • FIG. 9 is a flowchart showing an example of the operation of the base station apparatus 3 according to the present embodiment.
  • the base station apparatus 3 broadcasts information on the random access transmission of the uplink carrier element corresponding to the downlink carrier element for each downlink carrier element, and notifies the mobile station apparatus 1 of the information (step S101).
  • the base station apparatus 3 monitors the preamble with the radio resource of the random access channel assigned to each uplink carrier element, and detects the preamble (step S102).
  • the base station device 3 calculates a synchronization timing shift between the mobile station device 1 and the base station device 3 from the detected preamble (step S103).
  • the base station apparatus 3 determines the radio resource allocation of the uplink carrier element that detected the preamble, the transmission format (size of the message 3), the Temporary C-RNTI allocated to the mobile station apparatus 1 that transmitted the preamble, and the like (step S104). ).
  • the base station apparatus 3 transmits a random access response including the synchronization timing shift information calculated in step S102, the radio resource allocation determined in step S103, Temporary C-RNTI, and the like corresponding to the uplink carrier element that detected the preamble. It transmits on the downlink shared channel of a link carrier element (step S105). Further, the downlink control channel indicating the allocation of the radio resource of the downlink shared channel including this message 2 includes the RA-RNTI corresponding to the radio resource of the random access channel that detected the preamble, and the same downlink as the downlink shared channel. Transmit on the link carrier element.
  • the base station apparatus 3 receives the message 3 transmitted from the mobile station apparatus 1 using the uplink radio resource allocated in step S103 (step S106).
  • the base station apparatus 3 detects a C-RNTI previously assigned to the mobile station apparatus 1 in the message 3 received by the base station apparatus 3 (step S107)
  • the base station apparatus 3 detects the C-RNTI detected in step S107.
  • the downlink carrier element assigned to the mobile station apparatus 1 to which is assigned is set (step S108).
  • the base station device 3 Then, the same downlink carrier element as that which transmitted message 2 is set (step S109).
  • the contention resolution is transmitted using the downlink carrier element set in step S108 or step S109 (step S110). After step S110, the base station apparatus 3 ends the process related to random access.
  • the mobile station apparatus 1 obtains information on the random access transmission of the uplink carrier element corresponding to the downlink carrier element, which is broadcast in each downlink carrier element, from the downlink carrier element allocated to the base station apparatus 3 (Step S201). Based on the channel quality of the downlink carrier element, the mobile station apparatus 1 selects a signature, an uplink carrier element that transmits a preamble, and a radio resource of a random access channel (step S202). The mobile station apparatus 1 transmits a preamble using the radio resource of the random access channel selected in step S202 (step S203). The mobile station apparatus 1 monitors the message 2 for a certain period of time with a downlink carrier element corresponding to the uplink carrier element that has transmitted the preamble at step S203 (step S204).
  • the mobile station apparatus 1 When the mobile station apparatus 1 succeeds in detecting the message 2 (step S205), the mobile station apparatus 1 corrects the uplink transmission timing based on the synchronization timing shift information included in the message 2 (step S206). When the mobile station apparatus 1 fails to detect the message 2 (step S205), the mobile station apparatus 1 increments the transmission counter of the random access channel by one (step S214). Based on the radio resource allocation included in the message 2, the mobile station apparatus 1 transmits the message 3 including the information for identifying the own apparatus using the same uplink carrier element that transmitted the preamble (step S207). ).
  • the mobile station device 1 When the base station device 3 and the mobile station device 1 are in a connected state and the mobile station device 1 is assigned C-RNTI to the base station device 3, the mobile station device 1 transmits the message 3 including the C-RNTI. If the base station apparatus 3 and the mobile station apparatus are not in a connected state and the mobile station apparatus 1 has not been assigned a C-RNTI to the base station apparatus 3, the mobile station apparatus 1 uses message 3 to request connection setting information. Send including
  • the mobile station apparatus 1 When the mobile station apparatus 1 is connected to the base station apparatus 3 and includes C-RNTI in the message 3 (step S208), the mobile station apparatus 1 sets the downlink carrier element allocated to the base station apparatus 3 as frequency band aggregation (step S208). Step S209).
  • the mobile station apparatus 1 transmits the message 3 including information requesting connection setting instead of being connected to the base station apparatus 3 (step S208)
  • the mobile station apparatus 1 sets the same downlink carrier element that received the message 2 (Step S210).
  • the mobile station apparatus 1 monitors the message 4 for a certain period with the downlink carrier element set in step S209 or step S210 (step S211).
  • step S 212 the mobile station apparatus 1 determines that the random access has succeeded (step S 212), and ends the process related to the random access.
  • step S212 the mobile station apparatus 1 deletes the information of the message 3 transmitted in step S207 from the buffer (step S213).
  • step S214 the mobile station apparatus 1 increases the counter of the number of times of transmission of the random access channel by 1 (step S214).
  • step S215 the mobile station device 1 determines that there is a problem with the random access operation, and ends the process related to random access.
  • the mobile station apparatus 1 randomly selects a period (backoff) during which the next preamble is not transmitted from a period between 0 and the maximum backoff period. (Step S216). Next, it progresses to step S202 and it repeats from the selection of the radio
  • the radio communication system includes the downlink carrier element that transmits the message 4 according to the downlink carrier element assigned to the mobile station apparatus 1 to which the base station apparatus 3 has transmitted the preamble.
  • the mobile station apparatus 1 switches the downlink carrier element which monitors the message 4 according to the downlink carrier element allocated to the base station apparatus 3.
  • the base station apparatus 3 can transmit the message 4 using any one or a plurality of downlink carrier elements, and the degree of freedom of arrangement of the message 4 is increased.
  • the base station apparatus 3 can simultaneously transmit a plurality of messages 4 using a plurality of downlink carrier elements, radio resources of a plurality of uplink carrier elements and downlink carrier elements using the plurality of messages 4 to the mobile station apparatus 1 Can be assigned.
  • the radio communication system switches the downlink carrier element that monitors the message 4 based on the information included in the message 3 transmitted by the mobile station apparatus 1, and the base station apparatus 3 receives the message. Based on the information included in message 3, the downlink carrier element for transmitting message 4 is switched. Thereby, the base station apparatus 3 can transmit a signal indicating the success of the random access processing with an appropriate downlink carrier element according to the connection state of the mobile station apparatus 1.
  • the control program for a base station apparatus is a radio communication system in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of carrier elements defined in mutually different frequency bands Is a control program for a base station apparatus applied to the mobile station apparatus, a signal indicating that the random access processing started by the mobile station apparatus is successful, in any of a plurality of downlink carrier elements allocated to the mobile station apparatus It is characterized in that the transmission process is commanded to be readable and executable by a computer.
  • the base station apparatus can arbitrarily The message 4 can be transmitted by one or a plurality of downlink carrier elements, and the degree of freedom of arrangement of the message 4 is increased.
  • the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink carrier elements, radio resources of a plurality of uplink carrier elements and downlink carrier elements are allocated to the mobile station apparatus using a plurality of messages 4 be able to.
  • the mobile station apparatus control program of the present invention is a radio communication system in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of carrier elements defined in mutually different frequency bands.
  • the computer recognizes the success and the series of processes It is characterized possible and executable in that it has a command of Ri.
  • the random access process is started by any one of the uplink carrier elements, while the random access process is performed by any one of the plurality of downlink carrier elements.
  • the base station apparatus recognizes that the random access processing is successful, so that the base station apparatus can transmit the message 4 using any one or a plurality of downlink carrier elements. Increased freedom of placement.
  • the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink carrier elements, radio resources of a plurality of uplink carrier elements and downlink carrier elements are allocated to the mobile station apparatus using a plurality of messages 4 be able to.
  • a program that operates in the base station apparatus 3 and the mobile station apparatus 1 related to the present invention is a program (computer functions as a computer) that controls a CPU (Central Processing Unit) so as to realize the functions of the above-described embodiments related to the present invention.
  • Program Information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing, and then stored in various ROMs such as Flash ROM (Read Only Memory) and HDD (Hard Disk Drive). Reading, correction, and writing are performed by the CPU as necessary.
  • 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 mobile station apparatus 1 or the base station apparatus 3 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 or a CD-ROM, and a hard disk incorporated in a computer system.
  • 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,
  • a volatile memory inside a computer system serving as a server or a client may be included and a program that holds a program for a certain period of time.
  • 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.
  • part or all of the mobile station device 1 and the base station device 3 in the above-described embodiment may be realized as an LSI that is typically an integrated circuit.
  • Each functional block of the mobile station device 1 and the base station device 3 may be individually chipped, or a part or all of them may be integrated into a chip.
  • the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor.
  • an integrated circuit based on the technology can also be used.

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Abstract

A base station apparatus allocates a plurality of uplink component carriers and a plurality of downlink component carriers to a mobile station apparatus and uses the plurality of downlink component carriers to transmit/receive random access messages. The base station apparatus (3) comprises a random access control unit (1012) that performs a control of transmitting a signal, which indicates that a random access process started by the mobile station apparatus has succeeded, by use of one of the plurality of downlink component carriers allocated to the mobile station apparatus. The mobile station apparatus receives the signals of the plurality of downlink component carriers from the base station apparatus (3) and uses one of the uplink component carriers allocated by the base station apparatus (3) to start a random access process. When having detected, via one of the plurality of downlink component carriers, a signal indicating that the random access process has succeeded, the mobile station apparatus recognizes that the random access process has succeeded.

Description

無線通信システム、基地局装置、移動局装置、無線通信方法、基地局装置の制御プログラムおよび移動局装置の制御プログラムWireless communication system, base station apparatus, mobile station apparatus, wireless communication method, base station apparatus control program, and mobile station apparatus control program
　本発明は、基地局装置が、複数の上りリンクと下りリンクのコンポーネントキャリアを移動局装置に割り当て、基地局装置が移動局装置に割り当てた複数の下りリンクのコンポーネントキャリアでランダムアクセスのメッセージを送受信することができる無線通信システム、基地局装置、移動局装置、無線通信方法、基地局装置の制御プログラムおよび移動局装置の制御プログラムに関する。 In the present invention, a base station apparatus allocates a plurality of uplink and downlink component carriers to a mobile station apparatus, and a base station apparatus transmits / receives a random access message using a plurality of downlink component carriers allocated to the mobile station apparatus. The present invention relates to a wireless communication system, a base station device, a mobile station device, a wireless communication method, a base station device control program, and a mobile station device control program.
　従来から、セルラー移動通信の無線アクセス方式および無線ネットワークの進化（以下、「Long Term Evolution(LTE)、または、「Evolved Universal Terrestrial Radio Access(EUTRA)」と称する。）、および、ＬＴＥより広帯域な周波数帯域を利用して、さらに高速なデータの通信を実現する無線アクセス方式および無線ネットワーク（以下、「LongTerm Evolution-Advanced(LTE-A)」、または、「Advanced Evolved Universal Terrestrial Radio Access(A-EUTRA)」と称する。）が、第三世代パートナーシッププロジェクト（3rd Generation Partnership Project;3GPP）において検討されている。 Conventionally, cellular mobile communication radio access methods and radio network evolution (hereinafter referred to as "Long Terminology Evolution (LTE)" or "Evolved Universal Terrestrial Radio Access (EUTRA)"), and frequencies wider than LTE Wireless access method and wireless network (hereinafter "LongTerm Evolution-Advanced (LTE-A)" or "Advanced Evolved Universal Universal Terrestrial Radio Access" (A-EUTRA)) Is being considered in the third generation partnership project (3rd Generation Partnership Project; 3GPP).
　ＬＴＥでは、基地局装置から移動局装置への無線通信（下りリンク）の通信方式として、マルチキャリア送信である直交周波数分割多重（Orthogonal Frequency Division Multiplexing;OFDM）方式が用いられる。また、移動局装置から基地局装置への無線通信（上りリンク）の通信方式として、シングルキャリア送信であるＳＣ－ＦＤＭＡ（Single-Carrier Frequency-Division Multiple Access）方式が用いられる。 In LTE, an orthogonal frequency division multiplexing (OFDM) method, which is multicarrier transmission, is used as a wireless communication (downlink) communication method from a base station device to a mobile station device. Further, as a communication method of radio communication (uplink) from the mobile station device to the base station device, an SC-FDMA (Single-Carrier-Frequency-Division-Multiple-Access) method that is single carrier transmission is used.
　また、ＬＴＥにおいて、下りリンクでは、同期チャネル（Synchronization Channel;SCH）、報知チャネル（Physical Broadcast Channel;PBCH）、下りリンク制御チャネル（Physical Downlink Control Channel;PDCCH）、下りリンク共用チャネル（Physical Downlink Shared Channel;PDSCH）、マルチキャストチャネル（Physical Multicast Channel;PMCH）、制御フォーマットインディケータチャネル（Physical Control Format Indicator Channel;PCFICH）、ＨＡＲＱインディケータチャネル（Physical Hybrid Automatic Repeat Request Indicator Channel;PHICH）が割り当てられる。 In LTE, in the downlink, a synchronization channel (Synchronization Channel; SCH), a broadcast channel (Physical Broadcast Channel; PBCH), a downlink control channel (Physical Downlink Control Channel; PDCCH), a downlink shared channel (Physical Downlink Shared Channel). ; PDSCH), multicast channel (Physical Multicast Channel; PMCH), control format indicator channel (Physical Control Format Indicator Indicator Channel; PCFICH), HARQ indicator channel (Physical Hybrid Automatic Request Repeat Indicator Channel; PHICH).
　また、上りリンクでは、上りリンク共用チャネル（Physical Uplink Shared Channel;PUSCH）、上りリンク制御チャネル（Physical Uplink Control Channel;PUCCH）、ランダムアクセスチャネル（Physical Random Access Channel;PRACH）が割り当てられる。 Also, in the uplink, an uplink shared channel (Physical Uplink Shared Channel; PUSCH), an uplink control channel (Physical Uplink Control Channel; PUCCH), and a random access channel (Physical Random Access Channel; PRACH) are allocated.
　ランダムアクセスチャネルの使用目的は、上りリンクにおいて移動局装置と基地局装置間を同期させることと、上りリンクの無線リソースの割り当てを要求することである。移動局装置は、移動局装置と基地局装置の同期が外れている場合、移動局装置が基地局装置に上りリンク共用チャネルで送信するデータ情報がある場合、または、基地局装置が移動局装置に下りリンク共用チャネルで送信するデータ情報があり、基地局装置が移動局装置にランダムアクセスを起動するよう下りリンク制御チャネルで通知した場合などにランダムアクセスを起動する。 The purpose of using the random access channel is to synchronize the mobile station apparatus and the base station apparatus in the uplink and to request allocation of uplink radio resources. When the mobile station device is out of synchronization with the base station device, when there is data information that the mobile station device transmits to the base station device through the uplink shared channel, or when the base station device is the mobile station device There is data information to be transmitted on the downlink shared channel, and random access is activated when the base station apparatus notifies the mobile station apparatus on the downlink control channel to activate random access.
　ランダムアクセスには、Ｃｏｎｔｅｎｔｉｏｎ　ｂａｓｅｄ　Ｒａｎｄｏｍ　Ａｃｃｅｓｓと、Ｎｏｎ－Ｃｏｎｔｅｎｔｉｏｎ　ｂａｓｅｄ　Ｒａｎｄｏｍ　Ａｃｃｅｓｓの２つのアクセス方法がある。Ｃｏｎｔｅｎｔｉｏｎ　ｂａｓｅｄ　Ｒａｎｄｏｍ　Ａｃｃｅｓｓは、移動局装置間で衝突する可能性のあるアクセス方法であり、通常行なわれるランダムアクセスである。Ｎｏｎ－Ｃｏｎｔｅｎｔｉｏｎ　ｂａｓｅｄ　Ｒａｎｄｏｍ　Ａｃｃｅｓｓは、移動局装置間で衝突が発生しないアクセス方法であり、迅速に移動局装置と基地局装置間の同期をとるためにハンドオーバー等の特別な場合に基地局装置主導で行なわれるランダムアクセスである。 There are two access methods for random access: Contention based Random Access and Non-Contention based Random Access. Contention based Random Access is an access method that may collide between mobile station apparatuses, and is a random access that is normally performed. Non-Contention based Random Access is an access method that does not cause collisions between mobile station devices. In order to quickly synchronize between the mobile station device and the base station device, the base station device takes the lead in special cases such as handover. Random access performed in
　ランダムアクセスでは、同期をとるために移動局装置はプリアンブルのみ送信する。プリアンブルは、情報を表す信号パターンであるシグネチャが含まれ、数十種類のシグネチャを用意して数ビットの情報を表現することができる。現在では、移動局装置がプリアンブルを用いて６ビットの情報を送信することが想定され、６４種類のシグネチャが用意されることが想定されている。 In random access, the mobile station device transmits only the preamble for synchronization. The preamble includes a signature which is a signal pattern representing information, and several bits of information can be expressed by preparing dozens of types of signatures. Currently, it is assumed that the mobile station device transmits 6-bit information using a preamble, and it is assumed that 64 types of signatures are prepared.
　図１１は、従来技術に係る無線通信システムのランダムアクセスの一例を示す図である。図１１では、Ｃｏｎｔｅｎｔｉｏｎ　ｂａｓｅｄ　Ｒａｎｄｏｍ　Ａｃｃｅｓｓの手順例を示している。まず、移動局装置１が、下りリンクのチャネル品質などから、選択するシグネチャの範囲を決定し、選択されたシグネチャの範囲の中からシグネチャをランダムに選択し、ランダムアクセスチャネルでプリアンブルを送信する（メッセージ１（M1))。 FIG. 11 is a diagram illustrating an example of random access in a wireless communication system according to the related art. In FIG. 11, the example of a procedure of Contention based Random Access is shown. First, the mobile station apparatus 1 determines a signature range to be selected from downlink channel quality, etc., randomly selects a signature from the selected signature range, and transmits a preamble on a random access channel ( Message 1 (M1)).
　基地局装置３は、移動局装置１から送信されたプリアンブルを受信すると、プリアンブルから移動局装置１と基地局装置３間の同期タイミングのずれを算出し、移動局装置１がメッセージ３を送信するためのスケジューリング（上りリンクの無線リソース割り当て、送信フォーマット（メッセージサイズ）などの指定）を行なう。そして、基地局装置３は移動局装置１にＴｅｍｐｏｒａｒｙ　Ｃ－ＲＮＴＩ（Cell―Radio Network Temporary Identifer）を割り当て、下りリンク制御チャネルにプリアンブルを受信したランダムアクセスチャネルに対応するＲＡ－ＲＮＴＩ（Random Access-Radio Network Temporary Identifer）を配置し、下りリンク制御チャネルに含まれる無線リソース割り当てが示す下りリンク共用チャネルに同期タイミングのずれ情報、スケジューリング情報、Ｔｅｍｐｏｒａｒｙ　Ｃ－ＲＮＴＩおよび受信したプリアンブルのシグネチャの番号（ランダムID、またはプリアンブルIDとも呼称する。）を含んだランダムアクセスレスポンスを送信する（メッセージ２（M2))。 When the base station apparatus 3 receives the preamble transmitted from the mobile station apparatus 1, the base station apparatus 3 calculates a synchronization timing shift between the mobile station apparatus 1 and the base station apparatus 3 from the preamble, and the mobile station apparatus 1 transmits the message 3. Scheduling (designation of uplink radio resource allocation, transmission format (message size), etc.). Then, the base station device 3 assigns a temporary C-RNTI (Cell-Radio Network Temporary Identifer) to the mobile station device 1, and RA-RNTI (Random Access-Radio) corresponding to the random access channel that has received the preamble in the downlink control channel Network Temporary Identifer), and synchronization timing shift information, scheduling information, Temporary C-RNTI, and received preamble signature number (random ID,) in the downlink shared channel indicated by the radio resource allocation included in the downlink control channel Alternatively, a random access response including a preamble ID is transmitted (message 2 (M2)).
　移動局装置１は、下りリンク制御チャネルにＲＡ－ＲＮＴＩが含まれていることを確認すると、下りリンク制御チャネルに含まれる無線リソース割り当てが示す下りリンク共用チャネルに配置されたランダムアクセスレスポンスの中身を確認する。そして、移動局装置１は自装置が送信したプリアンブルのシグネチャの番号が含まれる応答を抽出し、同期タイミングのずれを補正し、割り当てられた上りリンク共用チャネルの無線リソースと送信フォーマットで予め基地局装置３から通知されたＣ－ＲＮＴＩ、または接続要求のメッセージ（RRCConnectionRequest message）、または接続再設定要求のメッセージ（RRCConnectionReestablishmentRequest message）を含むメッセージ３を送信する（メッセージ３（M3))。 When the mobile station apparatus 1 confirms that the RA-RNTI is included in the downlink control channel, the mobile station apparatus 1 displays the contents of the random access response arranged in the downlink shared channel indicated by the radio resource allocation included in the downlink control channel. Check. Then, the mobile station apparatus 1 extracts the response including the preamble signature number transmitted by the mobile station apparatus 1, corrects the synchronization timing shift, and preliminarily stores the base station in the radio resource and transmission format of the allocated uplink shared channel. The message 3 including the C-RNTI notified from the device 3, or a connection request message (RRCConnectionRequest message) or a connection reset request message (RRCConnectionReestablishmentRequest message) is transmitted (message 3 (M3)).
　基地局装置３は、移動局装置１からのメッセージ３を受信すると、受信したメッセージ３に含まれるＣ－ＲＮＴＩ、接続要求のメッセージ、または接続再設定要求のメッセージに含まれる移動局装置１を識別する情報を使用して移動局装置１間で衝突が起こっているかどうか判断するためのコンテンションレゾリューションを移動局装置１に送信する（メッセージ４（M4))。 When receiving the message 3 from the mobile station apparatus 1, the base station apparatus 3 identifies the C-RNTI included in the received message 3, the connection request message, or the connection reset request message included in the message 3 Is transmitted to the mobile station apparatus 1 to determine whether or not a collision occurs between the mobile station apparatuses 1 (message 4 (M4)).
　移動局装置１は、コンテンションレゾリューションの受信に成功すると、ランダムアクセスに関する処理を終了する。尚、移動局装置１は、ランダムアクセスレスポンス受信期間内に送信したプリアンブルのシグネチャの番号を検出しなかった場合、または、コンテンションレゾリューション受信期間内にコンテンションレゾリューションを検出しなかった場合に、プリアンブルの送信からやり直す（非特許文献１　第５．１節参照）。 When the mobile station device 1 has successfully received the contention resolution, the mobile station device 1 ends the process related to random access. In addition, the mobile station apparatus 1 did not detect the number of the preamble signature transmitted within the random access response reception period, or did not detect the contention resolution within the contention resolution reception period. In this case, the process starts again from the preamble transmission (see Non-Patent Document 1, section 5.1).
　ＬＴＥ－Ａでは、ＬＴＥとの後方互換性(backward compatibility)を持つこと、つまり、ＬＴＥ－Ａの基地局装置が、ＬＴＥ－ＡおよびＬＴＥの両方の移動局装置と同時に無線通信を行い、また、ＬＴＥ－Ａの移動局装置が、ＬＴＥ－ＡおよびＬＴＥの両方の基地局装置と無線通信を行えるようにすることが求められており、ＬＴＥ－ＡはＬＴＥと同一のチャネル構造を用いることが検討されている。 In LTE-A, it has backward compatibility with LTE, that is, the base station apparatus of LTE-A performs radio communication simultaneously with both mobile station apparatuses of LTE-A and LTE, There is a demand for LTE-A mobile station apparatuses to perform radio communication with both LTE-A and LTE base station apparatuses, and LTE-A is considering using the same channel structure as LTE. Has been.
　例えば、ＬＴＥ－Ａでは、ＬＴＥと同一のチャネル構造の周波数帯域（以下、「キャリア要素（CC:Carrier Component）」、または、「コンポーネントキャリア（CC:Component Carrier）」と称する。）を複数用いて、１つの周波数帯域（広帯域な周波数帯域）として使用する技術（周波数帯域集約：Spectrum aggregation、Carrier aggregation、Frequency aggregationなどとも称される。）が提案されている。 For example, LTE-A uses a plurality of frequency bands having the same channel structure as LTE (hereinafter, referred to as “carrier element (CC: Carrier-Component)” or “component carrier (CC: Component-Carrier)”). A technique (frequency band aggregation: also called spectrum ： aggregation, carrier aggregation, frequency aggregation, etc.) used as one frequency band (broadband frequency band) has been proposed.
　具体的には、周波数帯域集約を用いた通信では、下りリンクのキャリア要素毎に、報知チャネル、下りリンク制御チャネル、下りリンク共用チャネル、マルチキャストチャネル、制御フォーマットインディケータチャネル、ＨＡＲＱインディケータチャネルを送信し、上りリンクのキャリア要素毎に上りリンク共用チャネル、上りリンク制御チャネル、ランダムアクセスチャネルが割り当てられる。つまり、周波数帯域集約は、上りリンクと下りリンクにおいて、基地局装置と複数の移動局装置が上りリンク制御チャネル、上りリンク共用チャネル、下りリンク制御チャネル、下りリンク共用チャネルなどを、複数のキャリア要素を用いて、複数のデータ情報や複数の制御情報を同時に送受信する技術である（非特許文献２　第５章参照）。 Specifically, in communication using frequency band aggregation, a broadcast channel, a downlink control channel, a downlink shared channel, a multicast channel, a control format indicator channel, and a HARQ indicator channel are transmitted for each downlink carrier element. An uplink shared channel, an uplink control channel, and a random access channel are assigned to each uplink carrier element. That is, in the frequency band aggregation, in the uplink and downlink, the base station device and the plurality of mobile station devices use an uplink control channel, an uplink shared channel, a downlink control channel, a downlink shared channel, etc. Is a technology for simultaneously transmitting and receiving a plurality of data information and a plurality of control information (see Chapter 5 of Non-Patent Document 2).
　しかしながら、従来の技術では、基地局装置と移動局装置は1組の上りリンクのキャリア要素と下りリンクのキャリア要素でランダムアクセスの通信を行なっていたため、基地局装置が移動局装置に複数の上りリンクと下りリンクのキャリア要素を割り当てても、1組の上りリンクと下りリンクのキャリア要素でしかランダムアクセスの通信を行なうことができないという問題があった。 However, in the conventional technology, since the base station apparatus and the mobile station apparatus perform random access communication using a single set of uplink carrier elements and downlink carrier elements, the base station apparatus transmits multiple uplinks to the mobile station apparatus. Even if link and downlink carrier elements are allocated, there is a problem that random access communication can be performed only with one set of uplink and downlink carrier elements.
　本発明は、上記の事情に鑑みてなされたものであり、基地局装置が、複数の上りリンクと下りリンクのコンポーネントキャリアを移動局装置に割り当て、移動局装置に割り当てた複数の下りリンクのコンポーネントキャリアでランダムアクセスのメッセージを送受信することができる無線通信システム、基地局装置、移動局装置、無線通信方法、基地局装置の制御プログラムおよび移動局装置の制御プログラムを提供することを目的とする。 The present invention has been made in view of the above circumstances, and the base station apparatus allocates a plurality of uplink and downlink component carriers to the mobile station apparatus, and a plurality of downlink components allocated to the mobile station apparatus. It is an object of the present invention to provide a radio communication system, a base station apparatus, a mobile station apparatus, a radio communication method, a base station apparatus control program, and a mobile station apparatus control program that can transmit and receive a random access message on a carrier.
　（１）上記の目的を達成するために、本発明は、以下のような手段を講じた。すなわち、本発明の無線通信システムは、基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のコンポーネントキャリアを使用してランダムアクセス手順を行なう無線通信システムであって、前記基地局装置は、前記移動局装置が開始したランダムアクセス処理が成功したことを示す信号を、前記移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信する制御を行なうランダムアクセス制御部を備え、前記移動局装置は、前記基地局装置によって割り当てられた複数の下りリンクコンポーネントキャリアの信号を受信する受信処理部と、前記基地局装置によって割り当てられた上りリンクのコンポーネントキャリアのうち、いずれか一つの上りリンクコンポーネントキャリアでランダムアクセス処理を開始する一方、前記複数の下りリンクコンポーネントキャリアのいずれかで前記ランダムアクセス処理が成功したことを示す信号を検出した場合、前記ランダムアクセス処理が成功したと認識するランダムアクセス処理部と、を備えることを特徴としている。 (1) In order to achieve the above object, the present invention has taken the following measures. That is, the radio communication system of the present invention is a radio communication system in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands. The base station apparatus performs random access control for transmitting a signal indicating that the random access processing started by the mobile station apparatus is successful on any one of a plurality of downlink component carriers allocated to the mobile station apparatus. A control unit, wherein the mobile station apparatus receives a signal of a plurality of downlink component carriers allocated by the base station apparatus, and among the uplink component carriers allocated by the base station apparatus , Any one uplink component carrier A random access process that recognizes that the random access process is successful when a signal indicating that the random access process is successful is detected on any of the plurality of downlink component carriers. And a section.
　このように、基地局装置は、移動局装置が開始したランダムアクセス処理が成功したことを示す信号を、移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信し、移動局装置は、基地局装置によって割り当てられた上りリンクのコンポーネントキャリアのうち、いずれか一つの上りリンクコンポーネントキャリアでランダムアクセス処理を開始する一方、複数の下りリンクコンポーネントキャリアのいずれかでランダムアクセス処理が成功したことを示す信号を検出した場合、ランダムアクセス処理が成功したと認識するので、基地局装置が任意の１つ又は複数の下りリンクコンポーネントキャリアでメッセージ４を送信することができ、メッセージ４の配置の自由度が増す。また、基地局装置が同時に複数の下りリンクコンポーネントキャリアで複数のメッセージ４を送信できるため、移動局装置に複数のメッセージ４を用いて複数の上りリンクコンポーネントキャリアと下りリンクコンポーネントキャリアの無線リソースを割り当てることができる。 In this way, the base station device transmits a signal indicating that the random access processing started by the mobile station device is successful on any of a plurality of downlink component carriers assigned to the mobile station device, and the mobile station device The random access processing is started on any one of a plurality of downlink component carriers while the random access processing is started on any one of the uplink component carriers allocated by the base station apparatus. Is detected, the base station apparatus can transmit the message 4 on any one or a plurality of downlink component carriers, and the arrangement of the message 4 is free. The degree increases. In addition, since the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink component carriers, radio resources of a plurality of uplink component carriers and downlink component carriers are allocated to the mobile station apparatus using a plurality of messages 4. be able to.
　（２）また、本発明の無線通信システムにおいて、前記ランダムアクセス処理が成功したことを示す信号は、前記基地局装置が前記移動局装置に対して割り当てた前記移動局装置を特定する移動局装置識別子を含む下りリンク制御チャネルであることを特徴としている。 (2) In the wireless communication system of the present invention, the signal indicating that the random access processing has succeeded is a mobile station apparatus that identifies the mobile station apparatus assigned to the mobile station apparatus by the base station apparatus It is a downlink control channel including an identifier.
　このように、ランダムアクセス処理が成功したことを示す信号は、基地局装置が移動局装置に対して割り当てた移動局装置を特定する移動局装置識別子を含む下りリンク制御チャネルであるので、基地局装置が移動局装置にランダムアクセス処理の成功を示す信号を用いて、複数の上りリンクコンポーネントキャリア、及び下りリンクコンポーネントキャリアの無線リソースを割り当てることができる。 Thus, since the signal indicating that the random access processing has been successful is a downlink control channel including the mobile station apparatus identifier that identifies the mobile station apparatus allocated to the mobile station apparatus by the base station apparatus, the base station The apparatus can allocate radio resources of a plurality of uplink component carriers and downlink component carriers using a signal indicating the success of the random access processing to the mobile station apparatus.
　（３）また、本発明の無線通信システムにおいて、前記移動局装置は、前記基地局装置に対して上りリンクコンポーネントキャリアの信号を送信する送信処理部をさらに備え、前記ランダムアクセス制御部は、前記移動局装置から接続の設定を要求する情報を通知された場合は、ランダムアクセス処理が成功したことを示す信号を、前記移動局装置がランダムアクセス処理を開始した上りリンクコンポーネントキャリアに対応する下りリンクコンポーネントキャリアで送信する制御を行なう一方、前記移動局装置から接続の設定を要求する情報とは異なる情報を通知された場合は、ランダムアクセス処理が成功したことを示す信号を、前記移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信する制御を行ない、前記ランダムアクセス処理部は、前記送信処理部が前記基地局装置に接続の設定を要求する情報を通知し、前記ランダムアクセス処理が成功したことを示す信号を、前記ランダムアクセス処理を開始した上りリンクコンポーネントキャリアと対応する下りリンクコンポーネントキャリアで検出した場合は、前記ランダムアクセス処理が成功したと認識する一方、前記送信処理部が前記基地局装置に接続の設定を要求する情報とは異なる情報を通知し、前記ランダムアクセス処理が成功したことを示す信号を、前記基地局装置に割り当てられた前記複数の下りリンクコンポーネントキャリアのいずれかで検出した場合は、前記ランダムアクセス処理が成功したと認識することを特徴としている。 (3) In the wireless communication system of the present invention, the mobile station device further includes a transmission processing unit that transmits an uplink component carrier signal to the base station device, and the random access control unit includes the random access control unit, When the mobile station apparatus is notified of information requesting connection setting, a signal indicating that the random access process has been successful is transmitted to the downlink corresponding to the uplink component carrier from which the mobile station apparatus has started the random access process. While performing transmission control using a component carrier, when the mobile station apparatus is notified of information different from information requesting connection setting, a signal indicating that the random access processing has been successful is sent to the mobile station apparatus. Controls transmission using one of the assigned downlink component carriers. The random access processing unit notifies the base station apparatus of information requesting connection setting to the base station apparatus, and indicates a signal indicating that the random access processing is successful. When it is detected by a downlink component carrier corresponding to a link component carrier, it recognizes that the random access processing is successful, while the transmission processing unit receives information different from the information requesting connection setting from the base station device. When the signal indicating that the random access process is successful is detected in any of the plurality of downlink component carriers assigned to the base station apparatus, the random access process is recognized as successful. It is characterized by that.
　この構成により、基地局装置が移動局装置の接続状態に応じて適切な下りリンクコンポーネントキャリアでランダムアクセス処理の成功を示す信号を送信することができる。 With this configuration, the base station apparatus can transmit a signal indicating the success of the random access process on an appropriate downlink component carrier according to the connection state of the mobile station apparatus.
　（４）また、本発明の基地局装置は、基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のコンポーネントキャリアを使用してランダムアクセス手順を行なう無線通信システムに適用される基地局装置であって、前記移動局装置が開始したランダムアクセス処理が成功したことを示す信号を、前記移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信する制御を行なうランダムアクセス制御部を備えることを特徴としている。 (4) Also, the base station apparatus of the present invention is a radio communication system in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands. The base station apparatus applied to the mobile station apparatus, wherein the signal indicating that the random access processing started by the mobile station apparatus is successful is transmitted on any of a plurality of downlink component carriers allocated to the mobile station apparatus And a random access control unit for performing
　このように、移動局装置が開始したランダムアクセス処理が成功したことを示す信号を、移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信する制御を行なうので、基地局装置が任意の１つ又は複数の下りリンクコンポーネントキャリアでメッセージ４を送信することができ、メッセージ４の配置の自由度が増す。また、基地局装置が同時に複数の下りリンクコンポーネントキャリアで複数のメッセージ４を送信できるため、移動局装置に複数のメッセージ４を用いて複数の上りリンクコンポーネントキャリアと下りリンクコンポーネントキャリアの無線リソースを割り当てることができる。 As described above, since the signal indicating that the random access processing started by the mobile station apparatus is successful is transmitted on any of the plurality of downlink component carriers assigned to the mobile station apparatus, the base station apparatus can arbitrarily The message 4 can be transmitted on one or a plurality of downlink component carriers, and the degree of freedom of arrangement of the message 4 is increased. In addition, since the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink component carriers, radio resources of a plurality of uplink component carriers and downlink component carriers are allocated to the mobile station apparatus using a plurality of messages 4. be able to.
　（５）また、本発明の基地局装置において、前記ランダムアクセス処理が成功したことを示す信号は、前記基地局装置が前記移動局装置に対して割り当てた前記移動局装置を特定する移動局装置識別子を含む下りリンク制御チャネルであることを特徴としている。 (5) Further, in the base station apparatus of the present invention, the signal indicating that the random access processing is successful is a mobile station apparatus that identifies the mobile station apparatus allocated to the mobile station apparatus by the base station apparatus It is a downlink control channel including an identifier.
　このように、ランダムアクセス処理が成功したことを示す信号は、基地局装置が移動局装置に対して割り当てた移動局装置を特定する移動局装置識別子を含む下りリンク制御チャネルであるので、基地局装置が移動局装置にランダムアクセス処理の成功を示す信号を用いて、複数の上りリンクコンポーネントキャリア、及び下りリンクコンポーネントキャリアの無線リソースを割り当てることができる。 Thus, since the signal indicating that the random access processing has been successful is a downlink control channel including the mobile station apparatus identifier that identifies the mobile station apparatus allocated to the mobile station apparatus by the base station apparatus, the base station The apparatus can allocate radio resources of a plurality of uplink component carriers and downlink component carriers using a signal indicating the success of the random access processing to the mobile station apparatus.
　（６）また、本発明の基地局装置において、前記ランダムアクセス制御部は、前記移動局装置から接続の設定を要求する情報を通知された場合は、ランダムアクセス処理が成功したことを示す信号を、前記移動局装置がランダムアクセス処理を開始した上りリンクコンポーネントキャリアに対応する下りリンクコンポーネントキャリアで送信する制御を行なう一方、前記移動局装置から接続の設定を要求する情報とは異なる情報を通知された場合は、ランダムアクセス処理が成功したことを示す信号を、前記移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信する制御を行なうことを特徴としている。 (6) Further, in the base station apparatus of the present invention, when the random access control unit is notified of information requesting connection setting from the mobile station apparatus, the random access control unit transmits a signal indicating that the random access process is successful. The mobile station apparatus performs transmission control using a downlink component carrier corresponding to an uplink component carrier that has started random access processing, while the mobile station apparatus is notified of information different from information requesting connection setting. In this case, control is performed such that a signal indicating that the random access processing is successful is transmitted on one of a plurality of downlink component carriers assigned to the mobile station apparatus.
　この構成により、基地局装置が移動局装置の接続状態に応じて適切な下りリンクコンポーネントキャリアでランダムアクセス処理の成功を示す信号を送信することができる。 With this configuration, the base station apparatus can transmit a signal indicating the success of the random access process on an appropriate downlink component carrier according to the connection state of the mobile station apparatus.
　（７）また、本発明の移動局装置は、基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のコンポーネントキャリアを使用してランダムアクセス手順を行なう無線通信システムに適用される移動局装置であって、前記基地局装置によって割り当てられた複数の下りリンクコンポーネントキャリアの信号を受信する受信処理部と、前記基地局装置によって割り当てられた上りリンクのコンポーネントキャリアのうち、いずれか一つの上りリンクコンポーネントキャリアでランダムアクセス処理を開始する一方、前記複数の下りリンクコンポーネントキャリアのいずれかで前記ランダムアクセス処理が成功したことを示す信号を検出した場合、前記ランダムアクセス処理が成功したと認識するランダムアクセス処理部と、を備えることを特徴としている。 (7) Further, the mobile station apparatus of the present invention is a radio communication system in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands. A reception processing unit that receives signals of a plurality of downlink component carriers assigned by the base station device, and an uplink component carrier assigned by the base station device. When starting a random access process on any one of the uplink component carriers, while detecting a signal indicating that the random access process is successful on any of the plurality of downlink component carriers, the random access process A random app that recognizes success It is characterized by comprising a Seth processing unit.
　このように、基地局装置によって割り当てられた上りリンクのコンポーネントキャリアのうち、いずれか一つの上りリンクコンポーネントキャリアでランダムアクセス処理を開始する一方、複数の下りリンクコンポーネントキャリアのいずれかでランダムアクセス処理が成功したことを示す信号を検出した場合、ランダムアクセス処理が成功したと認識するので、基地局装置が任意の１つ又は複数の下りリンクコンポーネントキャリアでメッセージ４を送信することができ、メッセージ４の配置の自由度が増す。また、基地局装置が同時に複数の下りリンクコンポーネントキャリアで複数のメッセージ４を送信できるため、移動局装置に複数のメッセージ４を用いて複数の上りリンクコンポーネントキャリアと下りリンクコンポーネントキャリアの無線リソースを割り当てることができる。　 In this way, among the uplink component carriers allocated by the base station apparatus, the random access processing is started on any one of the uplink component carriers, while the random access processing is performed on any of the plurality of downlink component carriers. When a signal indicating success is detected, the base station apparatus recognizes that the random access processing is successful, so that the base station apparatus can transmit the message 4 on any one or a plurality of downlink component carriers. Increased freedom of placement. In addition, since the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink component carriers, radio resources of a plurality of uplink component carriers and downlink component carriers are allocated to the mobile station apparatus using a plurality of messages 4. be able to. *
（８）また、本発明の移動局装置において、前記基地局装置に対して上りリンクコンポーネントキャリアの信号を送信する送信処理部をさらに備え、前記ランダムアクセス処理部は、前記送信処理部が前記基地局装置に接続の設定を要求する情報を通知し、前記ランダムアクセス処理が成功したことを示す信号を、前記ランダムアクセス処理を開始した上りリンクコンポーネントキャリアと対応する下りリンクコンポーネントキャリアで検出した場合は、前記ランダムアクセス処理が成功したと認識する一方、前記送信処理部が前記基地局装置に接続の設定を要求する情報とは異なる情報を通知し、前記ランダムアクセス処理が成功したことを示す信号を、前記基地局装置に割り当てられた前記複数の下りリンクコンポーネントキャリアのいずれかで検出した場合は、前記ランダムアクセス処理が成功したと認識することを特徴としている。 (8) In the mobile station apparatus of the present invention, the mobile station apparatus further includes a transmission processing unit that transmits an uplink component carrier signal to the base station apparatus, and the random access processing unit includes: When the station apparatus is notified of information requesting connection setting, and a signal indicating that the random access processing is successful is detected in a downlink component carrier corresponding to the uplink component carrier that started the random access processing. , While recognizing that the random access processing is successful, the transmission processing unit notifies the base station device of information different from the information requesting connection setting, and a signal indicating that the random access processing is successful The plurality of downlink component carriers assigned to the base station apparatus If detected in either Re is characterized in that to recognize that the random access process has succeeded.
　この構成により、基地局装置が移動局装置の接続状態に応じて適切な下りリンクコンポーネントキャリアでランダムアクセス処理の成功を示す信号を送信することができる。 With this configuration, the base station apparatus can transmit a signal indicating the success of the random access process on an appropriate downlink component carrier according to the connection state of the mobile station apparatus.
　（９）また、本発明の無線通信方法は、基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のコンポーネントキャリアを使用してランダムアクセス手順を行なう無線通信方法であって、前記移動局装置が開始したランダムアクセス処理が成功したことを示す信号を、前記移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信することを特徴としている。 (9) Further, the wireless communication method of the present invention is a wireless communication method in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands. And the signal which shows that the random access process which the said mobile station apparatus started succeeded is transmitted by either of the some downlink component carrier allocated to the said mobile station apparatus, It is characterized by the above-mentioned.
　このように、移動局装置が開始したランダムアクセス処理が成功したことを示す信号を、移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信する制御を行なうので、基地局装置が任意の１つ又は複数の下りリンクコンポーネントキャリアでメッセージ４を送信することができ、メッセージ４の配置の自由度が増す。また、基地局装置が同時に複数の下りリンクコンポーネントキャリアで複数のメッセージ４を送信できるため、移動局装置に複数のメッセージ４を用いて複数の上りリンクコンポーネントキャリアと下りリンクコンポーネントキャリアの無線リソースを割り当てることができる。 As described above, since the signal indicating that the random access processing started by the mobile station apparatus is successful is transmitted on any of the plurality of downlink component carriers assigned to the mobile station apparatus, the base station apparatus can arbitrarily The message 4 can be transmitted on one or a plurality of downlink component carriers, and the degree of freedom of arrangement of the message 4 is increased. In addition, since the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink component carriers, radio resources of a plurality of uplink component carriers and downlink component carriers are allocated to the mobile station apparatus using a plurality of messages 4. be able to.
　（１０）また、本発明の無線通信方法は、基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のコンポーネントキャリアを使用してランダムアクセス手順を行なう無線通信方法であって、前記基地局装置によって割り当てられた複数の下りリンクコンポーネントキャリアの信号を受信し、前記基地局装置によって割り当てられた上りリンクのコンポーネントキャリアのうち、いずれか一つの上りリンクコンポーネントキャリアでランダムアクセス処理を開始する一方、前記複数の下りリンクコンポーネントキャリアのいずれかで前記ランダムアクセス処理が成功したことを示す信号を検出した場合、前記ランダムアクセス処理が成功したと認識することを特徴としている。 (10) Further, the wireless communication method of the present invention is a wireless communication method in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands. And receiving signals of a plurality of downlink component carriers allocated by the base station apparatus, and randomly receiving one of the uplink component carriers allocated by the base station apparatus. While the access process is started, when a signal indicating that the random access process is successful is detected in any of the plurality of downlink component carriers, the random access process is recognized as being successful.
　このように、基地局装置によって割り当てられた上りリンクのコンポーネントキャリアのうち、いずれか一つの上りリンクコンポーネントキャリアでランダムアクセス処理を開始する一方、複数の下りリンクコンポーネントキャリアのいずれかでランダムアクセス処理が成功したことを示す信号を検出した場合、ランダムアクセス処理が成功したと認識するので、基地局装置が任意の１つ又は複数の下りリンクコンポーネントキャリアでメッセージ４を送信することができ、メッセージ４の配置の自由度が増す。また、基地局装置が同時に複数の下りリンクコンポーネントキャリアで複数のメッセージ４を送信できるため、移動局装置に複数のメッセージ４を用いて複数の上りリンクコンポーネントキャリアと下りリンクコンポーネントキャリアの無線リソースを割り当てることができる。 In this way, among the uplink component carriers allocated by the base station apparatus, the random access processing is started on any one of the uplink component carriers, while the random access processing is performed on any of the plurality of downlink component carriers. When a signal indicating success is detected, the base station apparatus recognizes that the random access processing is successful, so that the base station apparatus can transmit the message 4 on any one or a plurality of downlink component carriers. Increased freedom of placement. In addition, since the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink component carriers, radio resources of a plurality of uplink component carriers and downlink component carriers are allocated to the mobile station apparatus using a plurality of messages 4. be able to.
　（１１）また、本発明の基地局装置の制御プログラムは、基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のコンポーネントキャリアを使用してランダムアクセス手順を行なう無線通信システムに適用される基地局装置の制御プログラムであって、前記移動局装置が開始したランダムアクセス処理が成功したことを示す信号を、前記移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信する処理を、コンピュータに読み取り可能および実行可能にコマンド化したことを特徴としている。 (11) Further, according to the control program for a base station apparatus of the present invention, the base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands. A control program for a base station apparatus applied to a radio communication system, wherein a signal indicating that random access processing started by the mobile station apparatus is successful is transmitted to a plurality of downlink component carriers allocated to the mobile station apparatus It is characterized in that the process to be transmitted by either is commanded to be readable and executable by a computer.
　このように、移動局装置が開始したランダムアクセス処理が成功したことを示す信号を、移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信する制御を行なうので、基地局装置が任意の１つ又は複数の下りリンクコンポーネントキャリアでメッセージ４を送信することができ、メッセージ４の配置の自由度が増す。また、基地局装置が同時に複数の下りリンクコンポーネントキャリアで複数のメッセージ４を送信できるため、移動局装置に複数のメッセージ４を用いて複数の上りリンクコンポーネントキャリアと下りリンクコンポーネントキャリアの無線リソースを割り当てることができる。 As described above, since the signal indicating that the random access processing started by the mobile station apparatus is successful is transmitted on any of the plurality of downlink component carriers assigned to the mobile station apparatus, the base station apparatus can arbitrarily The message 4 can be transmitted on one or a plurality of downlink component carriers, and the degree of freedom of arrangement of the message 4 is increased. In addition, since the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink component carriers, radio resources of a plurality of uplink component carriers and downlink component carriers are allocated to the mobile station apparatus using a plurality of messages 4. be able to.
　（１２）また、本発明の移動局装置の制御プログラムは、基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のコンポーネントキャリアを使用してランダムアクセス手順を行なう無線通信システムに適用される移動局装置の制御プログラムであって、前記基地局装置によって割り当てられた複数の下りリンクコンポーネントキャリアの信号を受信する処理と、前記基地局装置によって割り当てられた上りリンクのコンポーネントキャリアのうち、いずれか一つの上りリンクコンポーネントキャリアでランダムアクセス処理を開始する一方、前記複数の下りリンクコンポーネントキャリアのいずれかで前記ランダムアクセス処理が成功したことを示す信号を検出した場合、前記ランダムアクセス処理が成功したと認識する処理と、の一連の処理をコンピュータに読み取り可能および実行可能にコマンド化したことを特徴としている。 (12) In the mobile station apparatus control program of the present invention, the base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands. A control program for a mobile station apparatus applied to a radio communication system, the process for receiving signals of a plurality of downlink component carriers allocated by the base station apparatus, and an uplink allocated by the base station apparatus Among the component carriers, when starting a random access process in any one of the uplink component carriers, while detecting a signal indicating that the random access process is successful in any of the plurality of downlink component carriers, Random access processing It is characterized as the process recognizes that the Gong, a series of processes capable of reading the computer and executable so that it has a command of.
　このように、基地局装置によって割り当てられた上りリンクのコンポーネントキャリアのうち、いずれか一つの上りリンクコンポーネントキャリアでランダムアクセス処理を開始する一方、複数の下りリンクコンポーネントキャリアのいずれかでランダムアクセス処理が成功したことを示す信号を検出した場合、ランダムアクセス処理が成功したと認識するので、基地局装置が任意の１つ又は複数の下りリンクコンポーネントキャリアでメッセージ４を送信することができ、メッセージ４の配置の自由度が増す。また、基地局装置が同時に複数の下りリンクコンポーネントキャリアで複数のメッセージ４を送信できるため、移動局装置に複数のメッセージ４を用いて複数の上りリンクコンポーネントキャリアと下りリンクコンポーネントキャリアの無線リソースを割り当てることができる。 In this way, among the uplink component carriers allocated by the base station apparatus, the random access processing is started on any one of the uplink component carriers, while the random access processing is performed on any of the plurality of downlink component carriers. When a signal indicating success is detected, the base station apparatus recognizes that the random access processing is successful, so that the base station apparatus can transmit the message 4 on any one or a plurality of downlink component carriers. Increased freedom of placement. In addition, since the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink component carriers, radio resources of a plurality of uplink component carriers and downlink component carriers are allocated to the mobile station apparatus using a plurality of messages 4. be able to.
　本発明によれば、基地局装置と移動局装置は、基地局装置が移動局装置に割り当てた複数の下りリンクのコンポーネントキャリアでランダムアクセス処理の成功を示す信号を送受信することができる。さらに、基地局装置が移動局装置にランダムアクセス処理の成功を示す信号を用いて、複数の上りリンクコンポーネントキャリア、及び下りリンクコンポーネントキャリアの無線リソースを割り当てることができる。 According to the present invention, the base station apparatus and the mobile station apparatus can transmit and receive a signal indicating the success of the random access processing using a plurality of downlink component carriers assigned to the mobile station apparatus by the base station apparatus. Further, the base station apparatus can allocate radio resources of a plurality of uplink component carriers and downlink component carriers using a signal indicating the success of the random access processing to the mobile station apparatus.
本実施形態に係る無線通信システムの概念図である。It is a conceptual diagram of the radio | wireless communications system which concerns on this embodiment. 本実施形態に係る周波数帯域集約処理の一例を示す図である。It is a figure which shows an example of the frequency band aggregation process which concerns on this embodiment. 本実施形態に係る下りリンクの無線フレームの構成の一例を示す概略図である。It is the schematic which shows an example of a structure of the downlink radio frame which concerns on this embodiment. 本実施形態に係る上りリンクの無線フレームの構成の一例を示す概略図である。It is the schematic which shows an example of a structure of the uplink radio frame which concerns on this embodiment. 本実施形態に係るシグネチャの構成の一例を示す概略図である。It is the schematic which shows an example of a structure of the signature which concerns on this embodiment. 本実施形態に係る基地局装置３の構成を示す概略ブロック図である。It is a schematic block diagram which shows the structure of the base station apparatus 3 which concerns on this embodiment. 本実施形態に係る移動局装置１の構成を示す概略ブロック図である。It is a schematic block diagram which shows the structure of the mobile station apparatus 1 which concerns on this embodiment. 本実施形態に係る無線通信システムのランダムアクセスの一例を示す図である。It is a figure which shows an example of the random access of the radio | wireless communications system which concerns on this embodiment. 本実施形態に係る基地局装置３の動作の一例を示すフローチャートである。It is a flowchart which shows an example of operation | movement of the base station apparatus 3 which concerns on this embodiment. 本実施形態に係る移動局装置１の動作の一例を示すフローチャートである。It is a flowchart which shows an example of operation | movement of the mobile station apparatus 1 which concerns on this embodiment. 本実施形態に係る移動局装置１の動作の一例を示すフローチャートである。It is a flowchart which shows an example of operation | movement of the mobile station apparatus 1 which concerns on this embodiment. 従来技術に係る無線通信システムのランダムアクセスの一例を示す図である。It is a figure which shows an example of the random access of the radio | wireless communications system which concerns on a prior art.
　以下、本発明の実施形態について図面を参照して説明する。
　＜無線通信システムについて＞
　図１は、本実施形態に係る無線通信システムの概念図である。図１において、無線通信システムは、移動局装置１Ａ～１Ｃ、および基地局装置３を具備する。移動局装置１Ａ～１Ｃと基地局装置３とは、後述する周波数帯域集約を用いた通信を行なう。 Embodiments of the present invention will be described below with reference to the drawings.
<About wireless communication systems>
FIG. 1 is a conceptual diagram of a wireless communication system according to the present embodiment. In FIG. 1, the radio communication system includes mobile station apparatuses 1 A to 1 C and a base station apparatus 3. The mobile station apparatuses 1A to 1C and the base station apparatus 3 perform communication using frequency band aggregation described later.
　図１は、基地局装置３から移動局装置１Ａ～１Ｃへの無線通信（下りリンク）では、同期チャネル（Synchronization Channel;SCH）、下りリンクパイロットチャネル（または、「下りリンクリファレンスシグナル（Downlink Reference Signal;DL RS）」とも称する。）、報知チャネル（Physical Broadcast Channel;PBCH）、下りリンク制御チャネル（Physical Downlink Control Channel;PDCCH）、下りリンク共用チャネル（Physical Downlink Shared Channel;PDSCH）、マルチキャストチャネル（Physical Multicast Channel;PMCH）、制御フォーマットインディケータチャネル（Physical Control Format Indicator Channel;PCFICH）、ＨＡＲＱインディケータチャネル（Physical Hybrid ARQ Indicator Channel;PHICH）が割り当てられることを示す。 FIG. 1 shows a synchronization channel (Synchronization Channel; SCH), downlink pilot channel (or “Downlink リ ン ク Reference Signal” in wireless communication (downlink) from the base station device 3 to the mobile station devices 1A to 1C. Also referred to as “DL RS”)), broadcast channel (Physical Broadcast Channel; PBCH), downlink control channel (Physical Downlink Control Channel; PDCCH), downlink shared channel (Physical Downlink Shared Channel; PDSCH), multicast channel (Physical Multicast こ と Channel; PMCH), control format indicator channel (Physical Control Indicator Channel; PCFICH), and HARQ indicator channel (Physical Hybrid ARQ Indicator Channel; PHICH) are allocated.
　また、図１は、移動局装置１Ａ～１Ｃから基地局装置３への無線通信（上りリンク）では、上りリンクパイロットチャネル（または、「上りリンクリファレンスシグナル（Uplink Reference Signal;UL RS)」とも称する。）、上りリンク制御チャネル（Physical Uplink Control Channel;PUCCH）、上りリンク共用チャネル（Physical Uplink Shared Channel;PUSCH）、ランダムアクセスチャネル（Physical Random Access Channel;PRACH）が割り当てられることを示す。上りリンクリファレンスシグナルには、上りリンク共用チャネル、または上りリンク制御チャネルと時間多重されて送信され、上りリンク共用チャネルと上りリンク制御チャネルの伝搬路補償に用いられる復調リファレンスシグナル（Demodulation Reference Signal）と、上りリンクの伝搬路状況の推定に用いられるサウンディングリファレンスシグナル（Sounding Reference signal）がある。以下、移動局装置１Ａ～１Ｃを移動局装置１という。 1 is also referred to as an uplink pilot channel (or “uplink reference signal (UL) RS”) in radio communication (uplink) from the mobile station apparatuses 1A to 1C to the base station apparatus 3. )), An uplink control channel (Physical Uplink Control Channel; PUCCH), an uplink shared channel (Physical Uplink Shared Channel; PUSCH), and a random access channel (Physical Random Access Channel; PRACH). The uplink reference signal is transmitted in a time multiplexed manner with the uplink shared channel or the uplink control channel, and is used as a demodulation reference signal (Demodulation Reference Signal) used for propagation path compensation of the uplink shared channel and the uplink control channel. There is a sounding reference signal (Sounding Reference signal) used for estimation of uplink propagation path conditions. Hereinafter, the mobile station apparatuses 1A to 1C are referred to as the mobile station apparatus 1.
　＜周波数帯域集約について＞
　図２は、本実施形態に係る周波数帯域集約処理の一例を示す図である。図２において、横軸は周波数領域、縦軸は時間領域を示す。図２に示すように、下りリンクのサブフレームＤ１は、２０ＭＨｚの帯域幅を持った３つのキャリア要素（DCC-1:Downlink ComponentCarrier-1、DCC-2、DCC-3）のサブフレームによって構成されている。この下りリンクのキャリア要素（以下、下りリンクキャリア要素という）のサブフレーム各々には、格子状の線でハッチングした領域が示す下りリンク制御チャネルと、ハッチングをしない領域が示す下りリンク共用チャネルと、が時間多重されて割り当てられる。 <About frequency band aggregation>
FIG. 2 is a diagram illustrating an example of the frequency band aggregation processing according to the present embodiment. In FIG. 2, the horizontal axis represents the frequency domain, and the vertical axis represents the time domain. As shown in FIG. 2, the downlink subframe D1 is composed of subcarriers of three carrier elements (DCC-1: Downlink ComponentCarrier-1, DCC-2, and DCC-3) having a bandwidth of 20 MHz. ing. In each subframe of the downlink carrier element (hereinafter referred to as downlink carrier element), a downlink control channel indicated by a hatched area with a grid line, a downlink shared channel indicated by an area not hatched, and Are time-multiplexed and assigned.
　一方、上りリンクのサブフレームＵ１は、２０ＭＨｚの帯域幅を持った３つのキャリア要素（UCC-1:Uplink Component Carrier-1、UCC-2、UCC-3）によって構成されている。この上りリンクのキャリア要素（以下、上りリンクキャリア要素という）のサブフレーム各々には、斜めの格子状の線でハッチングした領域が示す上りリンク制御チャネルと、左斜線でハッチングした領域が示す上りリンク共用チャネルと、黒色でハッチングした領域が示すランダムアクセスチャネルが周波数多重されて割り当てられる。 On the other hand, the uplink subframe U1 is composed of three carrier elements (UCC-1: Uplink Component Carrier-1, UCC-2, UCC-3) having a bandwidth of 20 MHz. In each subframe of the uplink carrier element (hereinafter referred to as uplink carrier element), the uplink control channel indicated by the hatched area with diagonal grid lines and the uplink indicated by the hatched area with the left diagonal line A shared channel and a random access channel indicated by a black hatched area are frequency-multiplexed and assigned.
　例えば、基地局装置３は、ある下りリンクのサブフレームにおいて、３つの下りリンクキャリア要素のうち１つまたは複数の下りリンクキャリア要素の下りリンク共用チャネルに信号を配置して、移動局装置１へ送信する。また、移動局装置１は、ある上りリンクのサブフレームにおいて、３つの上りリンクキャリア要素のうち１つまたは複数の上りリンクキャリア要素の上りリンク共用チャネルに信号を配置して、基地局装置３へ送信する。また、移動局装置１は、ある上りリンクのサブフレームにおいて、３つの上りリンクキャリア要素のうち任意の１つの上りリンクキャリア要素のランダムアクセスチャネルを選択し、選択したランダムアクセスチャネルにプリアンブルを配置して、基地局装置３へ送信する。 For example, the base station apparatus 3 arranges a signal in the downlink shared channel of one or a plurality of downlink carrier elements among three downlink carrier elements in a certain downlink subframe, and sends the signal to the mobile station apparatus 1. Send. In addition, the mobile station apparatus 1 arranges a signal in an uplink shared channel of one or a plurality of uplink carrier elements among three uplink carrier elements in a certain uplink subframe, and transmits the signal to the base station apparatus 3. Send. Further, the mobile station apparatus 1 selects a random access channel of any one uplink carrier element among the three uplink carrier elements in a certain uplink subframe, and arranges a preamble on the selected random access channel. To the base station apparatus 3.
　移動局装置１と基地局装置３がランダムアクセスのメッセージ１からメッセージ３を送受信する上りリンクキャリア要素と下りリンクキャリア要素はペアになっており、基地局装置３は下りリンクキャリア要素各々で、下りリンクキャリア要素とペアになっている上りリンクキャリア要素を示す情報、および下りリンクキャリア要素とペアの上りリンクキャリア要素におけるランダムアクセスチャネルの構成やランダムアクセスの送信状況を示す情報などのランダムアクセス送信に関する情報を報知し、移動局装置１に通知する。 The mobile station apparatus 1 and the base station apparatus 3 transmit and receive the message 3 from the random access message 1 to the uplink carrier element and the downlink carrier element are paired. Information related to the uplink carrier element paired with the link carrier element, and random access transmission such as information indicating the configuration of the random access channel and the transmission status of the random access in the uplink carrier element paired with the downlink carrier element Information is notified and the mobile station apparatus 1 is notified.
　例えば、図２において、ＤＣＣ－１とＵＣＣ－１、ＤＣＣ－２とＵＣＣ－２、ＤＣＣ－３とＵＣＣ－３がランダムアクセスのメッセージ１からメッセージ３を送受信するペアとなる場合、基地局装置３は下りリンクキャリア要素（DCC-1、DCC-2、DCC-3）各々で、下りリンクキャリア要素とペアになる上りリンクキャリア要素（UCC-1、UCC-2、UCC-3）を示す情報、および下りリンクキャリア要素とペアの上りリンクキャリア要素におけるランダムアクセス送信に関する情報を報知する。移動局装置１がメッセージ１（プリアンブル）をＵＣＣ－１で送信した場合、基地局装置３と移動局装置１はメッセージ２（ランダムアクセスレスポンス）の送受信をＤＣＣ－１で行い、メッセージ３の送受信をＵＣＣ－１で行なう。 For example, in FIG. 2, when DCC-1 and UCC-1, DCC-2 and UCC-2, DCC-3 and UCC-3 are a pair for transmitting and receiving a random access message 1 to a message 3, the base station apparatus 3 Is information indicating an uplink carrier element (UCC-1, UCC-2, UCC-3) paired with the downlink carrier element in each downlink carrier element (DCC-1, DCC-2, DCC-3), And information on random access transmission in the uplink carrier element paired with the downlink carrier element. When mobile station apparatus 1 transmits message 1 (preamble) using UCC-1, base station apparatus 3 and mobile station apparatus 1 transmit and receive message 2 (random access response) using DCC-1, and transmit and receive message 3 Performed with UCC-1.
　尚、基地局装置３は、ランダムアクセスのメッセージ４（ランダムアクセス処理の成功を示す信号）の送信を行なう下りリンクキャリア要素を、メッセージ３を送信した移動局装置１に対して基地局装置３が割り当てている下りリンクキャリア要素の設定に応じて切り替える。また、基地局装置３がメッセージ３から移動局装置１を識別できない場合は、基地局装置３はメッセージ１を受信した上りリンクキャリア要素とペアの下りリンクキャリア要素でメッセージ４を送信する。 The base station apparatus 3 transmits a downlink carrier element for transmitting a random access message 4 (a signal indicating the success of the random access process) to the mobile station apparatus 1 that has transmitted the message 3. Switch according to the setting of the assigned downlink carrier element. When the base station device 3 cannot identify the mobile station device 1 from the message 3, the base station device 3 transmits the message 4 using the downlink carrier element paired with the uplink carrier element that has received the message 1.
　＜下りリンク無線フレームについて＞
　図３は、本実施形態に係る下りリンクの無線フレームの構成の一例を示す概略図である。図３は、ある下りリンクキャリア要素における無線フレームの構成を示す。図３において、横軸は時間領域、縦軸は周波数領域である。図３に示すように、下りリンクキャリア要素の無線フレームは、複数の下りリンクの物理リソースブロック（PRB;Physical Resource Block）ペア（例えば、図３の破線で囲まれた領域）から構成されている。この下りリンクの物理リソースブロックペアは、無線リソースの割り当てなどの単位であり、予め決められた幅の周波数帯（PRB帯域幅;180kHz）および時間帯（２個のスロット＝１個のサブフレーム;1ms）からなる。 <About downlink radio frames>
FIG. 3 is a schematic diagram illustrating an example of a configuration of a downlink radio frame according to the present embodiment. FIG. 3 shows a configuration of a radio frame in a certain downlink carrier element. In FIG. 3, the horizontal axis is the time domain, and the vertical axis is the frequency domain. As shown in FIG. 3, the radio frame of the downlink carrier element is composed of a plurality of downlink physical resource block (PRB) pairs (for example, an area surrounded by a broken line in FIG. 3). . The downlink physical resource block pair is a unit such as radio resource allocation, and has a predetermined frequency band (PRB bandwidth; 180 kHz) and time band (2 slots = 1 subframe; 1ms).
　１個の下りリンクの物理リソースブロックペアは、時間領域で連続する２個の下りリンクの物理リソースブロック（PRB帯域幅×スロット）から構成される。１個の下りリンクの物理リソースブロック（図３において、太線で囲まれている単位）は、周波数領域において１２個のサブキャリア（15kHz）から構成され、時間領域において７個のＯＦＤＭシンボル（71μs）から構成される。 One downlink physical resource block pair is composed of two downlink physical resource blocks (PRB bandwidth × slot) that are continuous in the time domain. One downlink physical resource block (unit surrounded by a thick line in FIG. 3) is composed of 12 subcarriers (15 kHz) in the frequency domain, and 7 OFDM symbols (71 μs) in the time domain. Consists of
　時間領域においては、７個のＯＦＤＭシンボル（71μs）から構成されるスロット（0.5ms）、２個のスロットから構成されるサブフレーム（1ms）、１０個のサブフレームから構成される無線フレーム（10ms）がある。周波数領域においては、下りリンクキャリア要素の帯域幅に応じて複数の下りリンクの物理リソースブロックが配置される。尚、１個のサブキャリアと１個のＯＦＤＭシンボルから構成されるユニットを下りリンクのリソースエレメント（Resource Element;RE）と称する。 In the time domain, a slot (0.5 ms) composed of 7 OFDM symbols (71 μs), a subframe (1 ms) composed of 2 slots, and a radio frame (10 ms composed of 10 subframes) ) In the frequency domain, a plurality of downlink physical resource blocks are arranged according to the bandwidth of the downlink carrier element. A unit composed of one subcarrier and one OFDM symbol is referred to as a downlink resource element (Resource （Element; RE).
　以下、下りリンクの無線フレーム内に割り当てられるチャネルについて説明をする。下りリンクの各サブフレームでは、例えば、下りリンク制御チャネルと、下りリンク共用チャネルと、下りリンクリファレンスシグナルとが割り当てられる。下りリンク制御チャネルはサブフレームの先頭のＯＦＤＭシンボルから配置され、下りリンク共用チャネルはサブフレームの残りのＯＦＤＭシンボルに配置される。下りリンクパイロットチャネルについては、説明の簡略化のため図３において図示を省略するが、下りリンクパイロットチャネルは周波数領域と時間領域において分散して配置される。 Hereinafter, the channels allocated in the downlink radio frame will be described. In each downlink subframe, for example, a downlink control channel, a downlink shared channel, and a downlink reference signal are allocated. The downlink control channel is arranged from the first OFDM symbol of the subframe, and the downlink shared channel is arranged in the remaining OFDM symbols of the subframe. The downlink pilot channel is not shown in FIG. 3 for the sake of simplicity of explanation, but the downlink pilot channel is distributed in the frequency domain and the time domain.
　まず、下りリンク制御チャネルに配置する信号について説明をする。下りリンク制御チャネルには、下りリンクグラント（「Downlink grant」、または「Downlink assignment」とも称する。）、上りリンクグラント（Uplink grant）など、通信の制御に用いられる情報である下りリンク制御情報（Downlink Control Information;DCI）の信号が配置される。 First, the signals arranged in the downlink control channel will be described. The downlink control channel includes downlink control information (Downlink grant), which is information used for communication control, such as downlink grant (also referred to as “Downlink grant” or “Downlink assignment”) and uplink grant (Uplink grant). Control Information (DCI) signal is arranged.
　尚、下りリンクグラントは、下りリンク共用チャネルに対する変調方式を示す情報、符号化方式を示す情報、無線リソースの割り当てを示す情報、ＨＡＲＱ（Hybrid AutomaticRepeat Request）に関する情報などから構成される。また、上りリンクグラントは、上りリンク共用チャネルに対する変調方式を示す情報、符号化方式を示す情報、無線リソースの割り当てを示す情報、ＨＡＲＱに関する情報などから構成される。 The downlink grant includes information indicating a modulation scheme for the downlink shared channel, information indicating a coding scheme, information indicating radio resource allocation, information on HARQ (Hybrid Automatic Repeat Request), and the like. The uplink grant includes information indicating a modulation scheme for the uplink shared channel, information indicating a coding scheme, information indicating radio resource allocation, HARQ information, and the like.
　尚、ＨＡＲＱとは、例えば、移動局装置１（基地局装置３）がデータ情報の復号の成否（ACK(ACKnowledgement;肯定応答）／ＮＡＣＫ（Negative-ACKnowledgement;否定応答））を基地局装置３（移動局装置１）に送信し、移動局装置１（基地局装置３）が誤りによりデータ情報を復号できない（NACK）場合に基地局装置３（移動局装置１）が信号を再送し、移動局装置１（基地局装置３）が再度受信した信号とすでに受信した信号との合成信号に対して復号処理を行なう技術である。 Note that HARQ refers to, for example, whether the mobile station apparatus 1 (base station apparatus 3) succeeds in decoding data information (ACK (ACKnowledgement; positive response) / NACK (Negative-ACKnowledgement; negative response))) to the base station apparatus 3 ( Mobile station apparatus 1), and when the mobile station apparatus 1 (base station apparatus 3) cannot decode the data information due to an error (NACK), the base station apparatus 3 (mobile station apparatus 1) retransmits the signal, and the mobile station This is a technique for performing decoding processing on a combined signal of a signal received again by apparatus 1 (base station apparatus 3) and a signal already received.
　下りリンク制御情報には、下りリンク制御情報のビット系列から生成した巡回冗長検査（Cyclic Redundancy Check;CRC）符号（誤り検出符号）と、識別子とで排他的論理和を行なった系列を付加する。移動局装置１は、更に、この系列に対して同じ識別子で排他的論理和を行なうことで巡回冗長検査符号を取得することができる。つまり、移動局装置１は、下りリンク制御チャネルに含まれている識別子から下りリンク制御チャネルが自装置宛てに送信されたものかを判定することができる。 In the downlink control information, a cyclic redundancy check (Cyclic Redundancy Check; CRC) code (error detection code) generated from the bit sequence of the downlink control information and a sequence obtained by performing an exclusive OR with an identifier are added. Furthermore, the mobile station apparatus 1 can obtain a cyclic redundancy check code by performing an exclusive OR with the same identifier on this sequence. That is, the mobile station apparatus 1 can determine whether the downlink control channel is transmitted to the own apparatus from the identifier included in the downlink control channel.
　例えば、基地局装置３が移動局装置１に割り当てた移動局装置識別子（Cell-Radio Network Temporary Identifier;C-RNTI）が下りリンク制御チャネルに含まれている場合、移動局装置１は下りリンク制御チャネルが自装置宛ての下りリンク共用チャネルの無線リソースの割り当てを示していると判定する。また、移動局装置１がプリアンブルを送信したランダムアクセスチャネルの無線リソースと対応するランダムアクセス識別子（Random Access-Radio Network Temporary Identifier;RA-RNTI）が下りリンク制御チャネルに含まれている場合、移動局装置１は下りリンク制御チャネルが、自装置が送信したプリアンブルに対するランダムアクセスレスポンス（Random Access Response）を含む可能性のある下りリンク共用チャネルの無線リソースの割り当てを示していると判定する。 For example, when the mobile station device identifier (Cell-Radio Network Temporary Identifier; C-RNTI) assigned to the mobile station device 1 by the base station device 3 is included in the downlink control channel, the mobile station device 1 performs downlink control. It is determined that the channel indicates the allocation of the radio resource of the downlink shared channel addressed to the own device. Further, when the mobile station apparatus 1 includes a random access identifier (Random Access-Radio Network Temporary Identifier; RA-RNTI) corresponding to the radio resource of the random access channel to which the preamble is transmitted, the mobile station The device 1 determines that the downlink control channel indicates radio resource allocation of the downlink shared channel that may include a random access response (Random Access Response) to the preamble transmitted by the device 1.
　次に、下りリンク共用チャネルに配置する信号について説明をする。下りリンク共用チャネルには、データ情報（トランスポートブロック;Transport Block）の信号が配置される。本実施形態では、下りリンクグラントと下りリンクグラントにより無線リソースの割り当てを示された下りリンク共用チャネルは同じサブフレーム内の、同じ下りリンクキャリア要素に配置される。尚、本発明はこれに限らず、移動局装置１が下りリンクグラントから下りリンク共用チャネルが配置される下りリンクキャリア要素を識別するようにし、下りリンクグラントと下りリンクグラントにより無線リソースの割り当てを示された下りリンク共用チャネルが異なる下りリンクキャリア要素に配置されてもよい。 Next, the signals placed on the downlink shared channel will be described. In the downlink shared channel, a signal of data information (transport block; Transport Block) is arranged. In this embodiment, the downlink shared channel indicated by the downlink grant and the downlink grant is allocated to the same downlink carrier element in the same subframe. The present invention is not limited to this, and the mobile station apparatus 1 identifies a downlink carrier element in which a downlink shared channel is arranged from the downlink grant, and assigns radio resources by the downlink grant and the downlink grant. The indicated downlink shared channel may be arranged in different downlink carrier elements.
　＜上りリンク無線フレームについて＞
　図４は、本実施形態に係る上りリンクの無線フレームの構成の一例を示す概略図である。図４は、ある上りリンクキャリア要素における無線フレームの構成を示す。図４において、横軸は時間領域、縦軸は周波数領域である。図４に示すように、上りリンクキャリア要素の無線フレームは、複数の上りリンクの物理リソースブロックペア（例えば、図４の破線で囲まれた領域）から構成されている。この上りリンクの物理リソースブロックペアは、無線リソースの割り当てなどの単位であり、予め決められた幅の周波数帯（PRB帯域幅;180kHz）および時間帯（２個のスロット＝１個のサブフレーム;1ms）からなる。 <Uplink radio frame>
FIG. 4 is a schematic diagram illustrating an example of a configuration of an uplink radio frame according to the present embodiment. FIG. 4 shows a configuration of a radio frame in an uplink carrier element. In FIG. 4, the horizontal axis is the time domain, and the vertical axis is the frequency domain. As shown in FIG. 4, the radio frame of the uplink carrier element is composed of a plurality of uplink physical resource block pairs (for example, an area surrounded by a broken line in FIG. 4). This uplink physical resource block pair is a unit such as radio resource allocation, and has a predetermined frequency band (PRB bandwidth; 180 kHz) and time band (2 slots = 1 subframe; 1ms).
　１個の上りリンクの物理リソースブロックペアは、時間領域で連続する２個の上りリンクの物理リソースブロック（PRB帯域幅×スロット）から構成される。１個の上りリンクの物理リソースブロック（図４において、太線で囲まれている単位）は、周波数領域において１２個のサブキャリア（15kHz）から構成され、時間領域において７個のＳＣ－ＦＤＭＡシンボル（71μs）から構成される。時間領域においては、７個のＳＣ－ＦＤＭＡシンボル（71μs）から構成されるスロット（0.5ms）、２個のスロットから構成されるサブフレーム（1ms）、１０個のサブフレームから構成される無線フレーム（10ms）がある。周波数領域においては、上りリンクキャリア要素の帯域幅に応じて複数の上りリンクの物理リソースブロックが配置される。尚、１個のサブキャリアと１個のＳＣ－ＦＤＭＡシンボルから構成されるユニットを上りリンクのリソースエレメントと称する。 One uplink physical resource block pair is composed of two uplink physical resource blocks (PRB bandwidth × slot) that are continuous in the time domain. One uplink physical resource block (unit surrounded by a thick line in FIG. 4) is composed of 12 subcarriers (15 kHz) in the frequency domain, and 7 SC-FDMA symbols ( 71 μs). In the time domain, a slot (0.5 ms) composed of 7 SC-FDMA symbols (71 μs), a subframe (1 ms) composed of 2 slots, and a radio frame composed of 10 subframes (10ms). In the frequency domain, a plurality of uplink physical resource blocks are arranged according to the bandwidth of the uplink carrier element. A unit composed of one subcarrier and one SC-FDMA symbol is referred to as an uplink resource element.
　以下、上りリンクの無線フレーム内に割り当てられるチャネルについて説明をする。上りリンクの各サブフレームでは、例えば、上りリンク制御チャネル、上りリンク共用チャネル、ランダムアクセスチャネル、および上りリンクリファレンスシグナルが割り当てられる。まず、ランダムアクセスチャネルに配置される信号について説明をする。ランダムアクセスチャネル（図示せず）は、周波数領域において７２個の上りリンクのリソースエレメント（物理リソースブロック６つ分）の帯域幅、時間領域において１つのサブフレームから３つのサブフレームのいずれかで構成される無線リソースに配置される。また、ランダムアクセスチャネルのサブキャリア間隔は１．２５ｋＨｚ、または７．５ｋＨｚであり、上りリンク制御チャネルや上りリンク共用チャネルのサブキャリア間隔（15kHz）と異なる。ランダムアクセスチャネルの無線リソースは、無線フレーム内に複数割り当てられる。具体的なランダムアクセスチャネルの無線リソースの割り当てや構成は、報知情報として、移動局装置１に通知される。 Hereinafter, the channels allocated in the uplink radio frame will be described. In each uplink subframe, for example, an uplink control channel, an uplink shared channel, a random access channel, and an uplink reference signal are allocated. First, signals arranged in the random access channel will be described. A random access channel (not shown) is composed of a bandwidth of 72 uplink resource elements (corresponding to six physical resource blocks) in the frequency domain, and one of three subframes in the time domain. To be placed on the radio resource. The subcarrier interval of the random access channel is 1.25 kHz or 7.5 kHz, which is different from the subcarrier interval (15 kHz) of the uplink control channel or the uplink shared channel. A plurality of radio resources of the random access channel are allocated in the radio frame. The specific radio resource allocation and configuration of the random access channel are notified to the mobile station apparatus 1 as broadcast information.
　ランダムアクセスチャネルには、移動局装置１と基地局装置３が同期をとるためにプリアンブルが配置される。プリアンブルは、情報を表す信号パターンであるシグネチャが含まれ、数十種類のシグネチャが用意され数ビットの情報を表現することができる。 In the random access channel, a preamble is arranged so that the mobile station apparatus 1 and the base station apparatus 3 are synchronized. The preamble includes a signature which is a signal pattern representing information, and several tens of types of signatures are prepared to represent several bits of information.
　図５は、本実施形態に係るシグネチャの構成の一例を示す概略図である。図５において、縦軸はシグネチャの番号であり、シグネチャ１番から２４番までは、メッセージ３の送信サイズが小さい場合、シグネチャの２５番から４８番まではメッセージ３の送信サイズが大きい場合に、移動局装置１各々がランダムに選択する。４９番から６４番までは、基地局装置３が選択し、移動局装置１に通知するシグネチャである。メッセージサイズが小さい場合のシグネチャは、通常、伝搬路の特性が悪い（または、移動局装置１と基地局装置３間の距離が遠い）場合に選択され、メッセージサイズが大きい場合のシグネチャは、伝搬路の特性が良い（または、移動局装置１と基地局装置３間の距離が近い）場合に選択される。 FIG. 5 is a schematic diagram showing an example of the configuration of the signature according to the present embodiment. In FIG. 5, the vertical axis represents the signature number. When the signature 1 to 24 is a small message 3 transmission size, the signature 25 to 48 is a message 3 transmission size is large. Each mobile station apparatus 1 selects at random. 49 to 64 are signatures selected by the base station device 3 and notified to the mobile station device 1. The signature when the message size is small is usually selected when the characteristics of the propagation path are poor (or the distance between the mobile station apparatus 1 and the base station apparatus 3 is long), and the signature when the message size is large is propagated. This is selected when the characteristics of the road are good (or the distance between the mobile station apparatus 1 and the base station apparatus 3 is short).
　次に、上りリンク制御チャネルに配置される信号について説明をする。上りリンク制御チャネルは、上りリンクキャリア要素の帯域幅の両端の上りリンクの物理リソースブロックペア（左斜線でハッチングされた領域）に割り当てられる。尚、上りリンク制御チャネルは周波数領域と時間領域において拡散符号により拡散され、符号多重される。上りリンク制御チャネルには、下りリンクのチャネル品質を示すチャネル品質情報、上りリンクの無線リソースの割り当ての要求を示すスケジューリング要求（SR:Scheduling Request）、下りリンク共用チャネルに対するＡＣＫ／ＮＡＣＫなど、通信の制御に用いられる情報である上りリンク制御情報（Uplink Control Information;UCI）の信号が配置される。 Next, signals that are arranged in the uplink control channel will be described. The uplink control channel is allocated to uplink physical resource block pairs (regions hatched with left oblique lines) at both ends of the bandwidth of the uplink carrier element. Note that the uplink control channel is spread by a spread code in the frequency domain and the time domain, and is code-multiplexed. The uplink control channel includes communication quality information such as channel quality information indicating downlink channel quality, a scheduling request (SR: Scheduling Request) indicating a request for uplink radio resource allocation, and ACK / NACK for the downlink shared channel. A signal of uplink control information (Uplink Control Information; UCI) which is information used for control is arranged.
　次に、上りリンク共用チャネルに配置される信号について説明をする。上りリンク共用チャネルは、上りリンク制御チャネルとランダムアクセスチャネル以外の上りリンクの物理リソースブロックペア（ハッチングされない領域）に割り当てられる。上りリンク共用チャネルには、上りリンク制御情報以外の情報であるデータ情報（トランスポートブロック;Transport Block）の信号が配置される。本実施形態では、上りリンクグラントにより無線リソースの割り当てを示された上りリンク共用チャネルは、予め定められた期間後のサブフレーム内の、移動局装置１が上りリンクグラントを受信した下りリンクキャリア要素と対応する上りリンクキャリア要素に配置される。例えば、図２において、ＵＣＣ－１の上りリンク共用チャネルの無線リソースの割り当てを示す上りリンクグラントは、ＤＣＣ－１の下りリンク制御チャネルに配置される。 Next, a description will be given of signals arranged in the uplink shared channel. The uplink shared channel is allocated to an uplink physical resource block pair (an area that is not hatched) other than the uplink control channel and the random access channel. In the uplink shared channel, a signal of data information (transport block; Transport Block) that is information other than the uplink control information is arranged. In this embodiment, the uplink shared channel whose radio resource allocation is indicated by the uplink grant is a downlink carrier element in which the mobile station apparatus 1 receives the uplink grant in a subframe after a predetermined period. And corresponding uplink carrier elements. For example, in FIG. 2, an uplink grant indicating radio resource allocation of the uplink shared channel of UCC-1 is arranged in the downlink control channel of DCC-1.
　尚、本発明はこれに限らず、移動局装置１が上りリンクグラントから上りリンク共用チャネルが配置される上りリンクキャリア要素を識別するようにし、上りリンクグラントと上りリンクグラントにより無線リソースの割り当てを示された上りリンク共用チャネルが、異なる上りリンクキャリア要素と下りリンクキャリア要素の組に配置されてもよい。 The present invention is not limited to this, and the mobile station apparatus 1 identifies an uplink carrier element in which an uplink shared channel is arranged from the uplink grant, and assigns radio resources by the uplink grant and the uplink grant. The indicated uplink shared channel may be arranged in a set of different uplink carrier elements and downlink carrier elements.
　次に、上りリンクリファレンスシグナルについて説明をする。復調リファレンスシグナル（図示せず）は、上りリンク共用チャネル、および上りリンク制御チャネルの無線リソースと時間多重されるように配置される。サウンディングリファレンスシグナル（図示せず）は、時間領域において、基地局装置３が移動局装置１毎に設定した周期のサブフレームにおいて最後のＳＣ－ＦＤＭＡシンボルに配置され、周波数領域において、基地局装置３が移動局装置１毎に設定した周波数領域に配置される。 Next, the uplink reference signal will be described. A demodulation reference signal (not shown) is arranged so as to be time-multiplexed with radio resources of the uplink shared channel and the uplink control channel. A sounding reference signal (not shown) is arranged in the last SC-FDMA symbol in a subframe having a period set by the base station apparatus 3 for each mobile station apparatus 1 in the time domain, and in the frequency domain, the base station apparatus 3 Are arranged in the frequency region set for each mobile station apparatus 1.
　＜基地局装置の構成について＞
　図６は、本実施形態に係る基地局装置３の構成を示す概略ブロック図である。図示するように、基地局装置３は、上位層処理部１０１、プリアンブル検出部１０３、同期タイミング測定部１０５、制御部１０７、受信処理部１０９、複数の受信アンテナ、送信処理部１１１、および、複数の送信アンテナ、を含んで構成される。また、上位層処理部１０１は、無線リソース制御部１０１１とランダムアクセス制御部１０１２を含んで構成される。尚、図６では、受信アンテナと送信アンテナとを別の構成としたが、信号の入出力を切り替える作用のあるサイリスタなどを用いてアンテナを共有するようにしてもよい。 <Configuration of base station device>
FIG. 6 is a schematic block diagram illustrating a configuration of the base station device 3 according to the present embodiment. As illustrated, the base station apparatus 3 includes an upper layer processing unit 101, a preamble detection unit 103, a synchronization timing measurement unit 105, a control unit 107, a reception processing unit 109, a plurality of reception antennas, a transmission processing unit 111, and a plurality of Transmission antennas. Further, the upper layer processing unit 101 includes a radio resource control unit 1011 and a random access control unit 1012. In FIG. 6, the receiving antenna and the transmitting antenna are configured differently, but the antenna may be shared by using a thyristor or the like that switches the input and output of signals.
　上位層処理部１０１は、下りリンクキャリア要素毎のデータ情報を、送信処理部１１１に出力する。また、上位層処理部１０１は、パケットデータ統合プロトコル（PDCP:Packet Data Convergence Protocol）層、無線リンク制御（RLC:Radio Link Control）層、無線リソース制御（RRC:Radio Resource Control）層の処理を行なう。上位層処理部１０１の無線リソース制御部１０１１は、移動局装置１各々の各種設定情報、通信状態、および、バッファ状況の管理などを行っている。上位層処理部１０１のランダムアクセス制御部１０１２は、移動局装置１各々のランダムアクセスに関する制御を行なっている。 The upper layer processing unit 101 outputs data information for each downlink carrier element to the transmission processing unit 111. Further, the upper layer processing unit 101 performs processing of a packet data integration protocol (PDCP: Packet Data Convergence Protocol) layer, a radio link control (RLC: Radio Link Control) layer, and a radio resource control (RRC: Radio Resource Control) layer. . The radio resource control unit 1011 of the upper layer processing unit 101 manages various setting information, communication status, buffer status, and the like of each mobile station apparatus 1. The random access control unit 1012 of the upper layer processing unit 101 performs control related to random access of each mobile station apparatus 1.
　上記の処理において、上位層処理部１０１が備える無線リソース制御部１０１１は、基地局装置３が無線通信に用いることのできる下りリンクキャリア要素と上りリンクキャリア要素の数、および移動局装置１が同時に送信、または受信することのできる下りリンクキャリア要素と上りリンクキャリア要素の数などに応じて、複数の上りリンクキャリア要素と下りリンクキャリア要素を移動局装置１に割り当てる。 In the above processing, the radio resource control unit 1011 included in the upper layer processing unit 101 is configured so that the number of downlink carrier elements and uplink carrier elements that can be used by the base station apparatus 3 for radio communication, and the mobile station apparatus 1 simultaneously. A plurality of uplink carrier elements and downlink carrier elements are allocated to the mobile station apparatus 1 in accordance with the number of downlink carrier elements and uplink carrier elements that can be transmitted or received.
　また、無線リソース制御部１０１１は、各下りリンクキャリア要素の各チャネルに配置する情報を生成、または上位ノードから取得し、下りリンクキャリア要素毎に送信処理部１１１に出力する。例えば、無線リソース制御部１０１１は、下りリンク制御情報、データ情報の一種であるランダムアクセスレスポンスを生成し、送信処理部１１１に出力する。 Also, the radio resource control unit 1011 generates information acquired in each channel of each downlink carrier element or acquires it from a higher node, and outputs the information to the transmission processing unit 111 for each downlink carrier element. For example, the radio resource control unit 1011 generates a random access response that is a kind of downlink control information and data information, and outputs the random access response to the transmission processing unit 111.
　また、無線リソース制御部１０１１は、移動局装置１に割り当てた上りリンクキャリア要素の無線リソースの中から、移動局装置１が上りリンク共用チャネル（データ情報）を配置する無線リソースを移動局装置１に割り当てる。また、無線リソース制御部１０１１は、移動局装置１に割り当てた下りリンクキャリア要素の無線リソースの中から、移動局装置１に対する下りリンク共用チャネル（データ情報）を配置する無線リソースを割り当てる。無線リソース制御部１０１１は、当該無線リソースの割り当てを示す下りリンクグラントと上りリンクグラントを生成し、送信処理部１１１を介して移動局装置１に送信する。また、無線リソース制御部１０１１は、当該下りリンクグラントと上りリンクグラントに、下りリンクグラントまたは上りリンクグラントが対応する移動局装置１に割り当てたＣ－ＲＮＴＩを含める。 Also, the radio resource control unit 1011 assigns the radio resource in which the mobile station device 1 arranges the uplink shared channel (data information) among the radio resources of the uplink carrier element allocated to the mobile station device 1 to the mobile station device 1. Assign to. Also, the radio resource control unit 1011 allocates radio resources for arranging the downlink shared channel (data information) for the mobile station apparatus 1 from among the radio resources of the downlink carrier elements allocated to the mobile station apparatus 1. The radio resource control unit 1011 generates a downlink grant and an uplink grant indicating the radio resource allocation, and transmits the downlink grant and the uplink grant to the mobile station apparatus 1 via the transmission processing unit 111. Also, the radio resource control unit 1011 includes the C-RNTI assigned to the mobile station apparatus 1 corresponding to the downlink grant or the uplink grant in the downlink grant and the uplink grant.
　無線リソース制御部１０１１は、ランダムアクセス制御部１０１２からの制御情報に基づいて、１つの下りリンクキャリア要素を選択し、選択した下りリンクキャリア要素内の無線リソースの中からランダムアクセスレスポンスを配置する無線リソースを割り当てる。また、無線リソース制御部１０１１は、当該無線リソースの割り当てを示す下りリンクグラントに、ランダムアクセス制御部１０１２から入力されたＲＡ－ＲＮＴＩを含める。 The radio resource control unit 1011 selects one downlink carrier element based on the control information from the random access control unit 1012 and arranges a random access response from the radio resources in the selected downlink carrier element. Allocate resources. Also, the radio resource control unit 1011 includes the RA-RNTI input from the random access control unit 1012 in the downlink grant indicating the radio resource allocation.
　無線リソース制御部１０１１は、ランダムアクセス制御部１０１２からの制御情報に基づいて、１つの上りリンクキャリア要素を選択し、選択した上りリンクキャリア要素内の無線リソースの中からメッセージ３を配置する無線リソースを割り当てる。また、無線リソース制御部１０１１は、当該無線リソースの割り当てを示す上りリンクグラントを生成し、ランダムアクセスレスポンスに含め、送信処理部１１１を介して移動局装置１に送信する。尚、ランダムアクセスレスポンスに含まれる上りリンクグラントは、巡回冗長検査符号と移動局装置識別子が含まれない。ランダムアクセスレスポンスには、ランダムアクセス制御部１０１２から入力された複数のシグネチャ各々に対する同期タイミングのずれ量とＴｅｍｐｏｒａｒｙ　Ｃ－ＲＮＴＩと、無線リソース制御部１０１１が生成した上りリンクグラントが含まれている。 The radio resource control unit 1011 selects one uplink carrier element based on the control information from the random access control unit 1012 and arranges the message 3 from the radio resources in the selected uplink carrier element. Assign. Also, the radio resource control unit 1011 generates an uplink grant indicating the radio resource allocation, includes it in a random access response, and transmits it to the mobile station apparatus 1 via the transmission processing unit 111. The uplink grant included in the random access response does not include the cyclic redundancy check code and the mobile station apparatus identifier. The random access response includes a synchronization timing shift amount for each of a plurality of signatures input from the random access control unit 1012, a Temporary C-RNTI, and an uplink grant generated by the radio resource control unit 1011.
　また、無線リソース制御部１０１１は、移動局装置１から上りリンク制御チャネルで通知された上りリンク制御情報（ACK/NACK、チャネル品質情報、スケジューリング要求）、および移動局装置１のバッファの状況や無線リソース制御部１０１１が設定した移動局装置１各々の各種設定情報に基づき、受信処理部および送信処理部の制御を行なうために制御情報を生成し、制御部に出力する。 Also, the radio resource control unit 1011 receives the uplink control information (ACK / NACK, channel quality information, scheduling request) notified from the mobile station apparatus 1 through the uplink control channel, the buffer status of the mobile station apparatus 1, and the radio Based on various setting information of each mobile station apparatus 1 set by the resource control unit 1011, control information is generated to control the reception processing unit and the transmission processing unit, and is output to the control unit.
　上記の処理において、上位層処理部１０１が備えるランダムアクセス制御部１０１２は、ランダムアクセスチャネルの構成（ランダムアクセスチャネルの無線リソースの割り当てなど）やランダムアクセスの送信状況を示す情報（ランダムアクセス負荷）などのランダムアクセスに関する情報を含む報知情報、ランダムアクセスレスポンス、コンテンションレゾリューションなどを生成し、送信処理部１１１に出力するよう、無線リソース制御部１０１１に制御情報を出力する。 In the above processing, the random access control unit 1012 included in the upper layer processing unit 101 includes a random access channel configuration (such as radio resource allocation of the random access channel) and information indicating a random access transmission status (random access load), etc. Broadcast information including information related to random access, random access response, contention resolution, and the like are generated, and the control information is output to the radio resource control unit 1011 so as to be output to the transmission processing unit 111.
　ランダムアクセス制御部１０１２は、移動局装置１に送信するデータ情報があるが、基地局装置３と移動局装置１間の同期がはずれている場合などに、移動局装置１にプリアンブルの送信を指示することを決定する。この場合、ランダムアクセス制御部１０１２は、移動局装置１にプリアンブルの送信を指示する下りリンク制御情報を生成し、送信処理部１１１に出力するよう、無線リソース制御部１０１１に制御情報を出力する。 The random access control unit 1012 instructs the mobile station apparatus 1 to transmit a preamble when there is data information to be transmitted to the mobile station apparatus 1 but the synchronization between the base station apparatus 3 and the mobile station apparatus 1 is out of sync. Decide what to do. In this case, the random access control unit 1012 generates downlink control information that instructs the mobile station apparatus 1 to transmit a preamble, and outputs the control information to the radio resource control unit 1011 so as to output to the transmission processing unit 111.
　ランダムアクセス制御部１０１２は、プリアンブル検出部１０３から入力された、ランダムアクセスチャネルの情報とシグネチャの番号と同期タイミングのずれ量に基づき、シグネチャの番号と同期タイミングのずれ量を無線リソース制御部１０１１に出力し、無線リソース制御部１０１１にランダムアクセスレスポンスを生成するよう、無線リソース制御部１０１１に制御情報を出力する。また、ランダムアクセス制御部１０１２は、プリアンブル検出部１０３から入力されたシグネチャを検出したランダムアクセスチャネルの情報から、ＲＡ－ＲＮＴＩを算出し、無線リソース制御部１０１１に出力する。 The random access control unit 1012 sends the signature number and the synchronization timing shift amount to the radio resource control unit 1011 based on the random access channel information, the signature number, and the synchronization timing shift amount input from the preamble detection unit 103. The control information is output to the radio resource control unit 1011 so that the radio resource control unit 1011 generates a random access response. Also, the random access control unit 1012 calculates RA-RNTI from information on the random access channel that has detected the signature input from the preamble detection unit 103, and outputs the RA-RNTI to the radio resource control unit 1011.
　ランダムアクセス制御部１０１２は、プリアンブル検出部１０３から入力されたシグネチャを検出したランダムアクセスチャネルの情報に基づき、プリアンブルが検出された上りリンクキャリア要素とペアの下りリンクキャリア要素を選択し、選択した下りリンクキャリア要素でランダムアクセスレスポンスを送信するよう、無線リソース制御部１０１１に制御情報を出力する。また、ランダムアクセス制御部１０１２は、プリアンブルが検出された上りリンクキャリア要素を選択し、選択した上りリンクキャリア要素の無線リソースの中からメッセージ３を送信する無線リソースを割り当てるよう、無線リソース制御部１０１１に制御情報を出力する。 The random access control unit 1012 selects the downlink carrier element paired with the uplink carrier element in which the preamble is detected based on the information on the random access channel that has detected the signature input from the preamble detection unit 103, and selects the selected downlink carrier element. Control information is output to the radio resource control unit 1011 so that a random access response is transmitted by the link carrier element. Further, the random access control unit 1012 selects an uplink carrier element in which the preamble is detected, and assigns a radio resource for transmitting the message 3 from the radio resources of the selected uplink carrier element, so that the radio resource control unit 1011 Output control information.
　ランダムアクセス制御部１０１２は、メッセージ３に含まれる移動局装置１を識別するＣ－ＲＮＴＩからメッセージ３を送信した移動局装置１を特定し、当該移動局装置１に割り当てている下りリンクキャリア要素でコンテンションレゾリューション（ランダムアクセス処理の成功を示す信号）を送信するよう、無線リソース制御部１０１１に制御情報を出力する。 The random access control unit 1012 identifies the mobile station apparatus 1 that has transmitted the message 3 from the C-RNTI that identifies the mobile station apparatus 1 included in the message 3, and uses the downlink carrier element assigned to the mobile station apparatus 1. Control information is output to the radio resource control unit 1011 so as to transmit contention resolution (a signal indicating the success of the random access process).
　尚、ランダムアクセス制御部１０１２は、メッセージ３に接続要求のメッセージ（RRCConnectionRequest message）、または接続再設定要求のメッセージ（RRCConnectionReestablishmentRequest message）などの接続の設定を要求する情報が含まれており、移動局装置１に割り当てたＣ－ＲＮＴＩが検出できない場合、メッセージ３を送信した移動局装置１を特定できないため、プリアンブルを検出した上りリンクキャリア要素とペアの下りリンクキャリア要素でコンテンションレゾリューションを送信するよう、無線リソース制御部１０１１に制御情報を出力する。接続再設定要求のメッセージに、例えば、他の基地局装置３に割り当てられたＣ－ＲＮＴＩが含まれることがあるが、当該Ｃ－ＲＮＴＩはランダムアクセス制御部１０１２では検出できず、より上位の処理部が検出する。尚、詳細なランダムアクセスの手順は後述する。 The random access control unit 1012 includes information requesting connection setting such as a connection request message (RRCConnectionRequest message) or a connection reset request message (RRCConnectionReestablishmentRequest message) in the message 3, and the mobile station apparatus. If the C-RNTI assigned to 1 cannot be detected, the mobile station device 1 that transmitted the message 3 cannot be identified, and therefore, the contention resolution is transmitted by the uplink carrier element that detected the preamble and the pair of downlink carrier elements. The control information is output to the radio resource control unit 1011. The connection reset request message may include, for example, a C-RNTI assigned to another base station apparatus 3, but the C-RNTI cannot be detected by the random access control unit 1012, and higher-level processing is performed. Part detects. A detailed random access procedure will be described later.
　制御部１０７は、上位層処理部１０１からの制御情報に基づいて、受信処理部１０９、および送信処理部１１１の制御を行なう制御信号を生成する。制御部１０７は、生成した制御信号を受信処理部１０９、および送信処理部１１１に出力して受信処理部１０９、および送信処理部１１１の制御を行なう。 The control unit 107 generates a control signal for controlling the reception processing unit 109 and the transmission processing unit 111 based on the control information from the higher layer processing unit 101. The control unit 107 outputs the generated control signal to the reception processing unit 109 and the transmission processing unit 111 to control the reception processing unit 109 and the transmission processing unit 111.
　受信処理部１０９は、制御部から入力された制御信号に従って、受信アンテナを介して移動局装置１から受信した受信信号を分離、復調、復号し、復号した情報を上位層処理部１０１に出力する。また、受信処理部１０９は、分離した上りリンクリファレンスシグナルを同期タイミング測定部１０５に出力し、分離したランダムアクセスチャネルをプリアンブル検出部１０３に出力する。 The reception processing unit 109 separates, demodulates and decodes the reception signal received from the mobile station apparatus 1 via the reception antenna according to the control signal input from the control unit, and outputs the decoded information to the higher layer processing unit 101. . Also, the reception processing unit 109 outputs the separated uplink reference signal to the synchronization timing measurement unit 105 and outputs the separated random access channel to the preamble detection unit 103.
　具体的には、受信処理部１０９は、各受信アンテナを介して受信した各上りリンクキャリア要素の信号を、中間周波数に変換し（ダウンコンバート）、不要な周波数成分を除去し、信号レベルが適切に維持されるように増幅レベルを制御し、受信した信号の同相成分および直交成分に基づいて、直交復調し、直交復調されたアナログ信号をディジタル信号に変換する。受信処理部１０９は、変換したディジタル信号からガードインターバル（Guard Interval;GI）に相当する部分を除去する。受信処理部１０９は、ガードインターバルを除去した信号に対して高速フーリエ変換（Fast Fourier Transform;FFT）を行い、周波数領域の信号を抽出する。 Specifically, the reception processing unit 109 converts the signal of each uplink carrier element received via each reception antenna to an intermediate frequency (down-conversion), removes unnecessary frequency components, and appropriately sets the signal level. The amplification level is controlled so as to be maintained at, and quadrature demodulation is performed based on the in-phase component and the quadrature component of the received signal, and the quadrature demodulated analog signal is converted into a digital signal. The reception processing unit 109 removes a portion corresponding to a guard interval (GI) from the converted digital signal. The reception processing unit 109 performs fast Fourier transform (FFT) on the signal from which the guard interval is removed, and extracts a frequency domain signal.
　受信処理部１０９は、抽出した信号を上りリンクキャリア要素毎に、ランダムアクセスチャネル、上りリンク制御チャネル、上りリンク共用チャネル、デモジュレーションリファレンスシグナルおよびサウンディングリファレンスシグナルに配置された信号に、それぞれ分離する。また、上りリンク制御チャネルは符号多重されているため、受信処理部１０９は上りリンク制御チャネルに対して逆拡散を行ない分離する。尚、この分離は、予め基地局装置３が決定して各移動局装置１に通知した無線リソースの割当情報に基づいて行われる。また、受信処理部１０９は、分離した上りリンクリファレンスシグナルから伝搬路の推定値を求め、上りリンク制御チャネルと上りリンク共用チャネルの伝搬路の補償を行なう。受信処理部１０９は、分離したランダムアクセスチャネルをプリアンブル検出部１０３に出力し、分離した上りリンクリファレンスシグナルを同期タイミング測定部１０５に出力する。 The reception processing unit 109 separates the extracted signal into signals arranged in a random access channel, an uplink control channel, an uplink shared channel, a demodulation reference signal, and a sounding reference signal for each uplink carrier element. Further, since the uplink control channel is code-multiplexed, the reception processing unit 109 performs despreading on the uplink control channel and separates it. This separation is performed based on radio resource allocation information that is determined in advance by the base station device 3 and notified to each mobile station device 1. Also, the reception processing unit 109 obtains an estimated value of the propagation path from the separated uplink reference signal, and compensates the propagation path of the uplink control channel and the uplink shared channel. The reception processing unit 109 outputs the separated random access channel to the preamble detection unit 103, and outputs the separated uplink reference signal to the synchronization timing measurement unit 105.
　受信処理部１０９は、上りリンク共用チャネルを逆離散フーリエ変換（Inverse Discrete Fourier Transform;IDFT）し、変調シンボルを取得し、上りリンク制御チャネルと上りリンク共用チャネルの変調シンボルそれぞれに対して、２位相偏移変調（Binary Phase Shift Keying;BPSK）、４相位相偏移変調（Quadrature Phase Shift Keying;QPSK）、１６値直交振幅変調（16Quadrature Amplitude Modulation;16QAM）、６４値直交振幅変調（64Quadrature Amplitude Modulation;64QAM）等の予め定められた、または基地局装置３が移動局装置１各々に上りリンクグラントで予め通知した変調方式を用いて受信信号の復調を行なう。 The reception processing unit 109 performs inverse discrete Fourier transform (Inverse Discrete Fourier Transform; IDFT) on the uplink shared channel, acquires modulation symbols, and performs two phases for each of the modulation symbols of the uplink control channel and the uplink shared channel. Shift key modulation (Binary Phase Shift Keying; BPSK), Phase shift keying (Quadrature Phase Shift Keying; QPSK), 16-value quadrature amplitude modulation (16 Quadrature-Amplitude Modulation; 16QAM), 64-value quadrature amplitude modulation (64 Quadrature-Amplitude Modulation; 64QAM) or the like, or the base station apparatus 3 demodulates the received signal using a modulation scheme notified in advance to each mobile station apparatus 1 using an uplink grant.
　受信処理部１０９は、復調した上りリンク制御チャネルと上りリンク共用チャネルの符号化ビットを、予め定められた符号化方式の、予め定められた、または基地局装置３が移動局装置１に上りリンクグラントで予め通知した符号化率で復号を行ない、データ情報と、上りリンク制御情報を上位層処理部１０１へ出力する。受信処理部１０９は、移動局装置１から受信した上りリンクリファレンスシグナルや上りリンク共用チャネルの受信信号の電力などを測定し、上りリンクキャリア要素のチャネルの受信品質を測定し、上位層処理部１０１に出力する。 The reception processing unit 109 sets the demodulated encoded bits of the uplink control channel and the uplink shared channel to the mobile station apparatus 1 in the predetermined encoding method or the base station apparatus 3 uplinks to the mobile station apparatus 1. Decoding is performed at a coding rate notified in advance by the grant, and data information and uplink control information are output to the upper layer processing unit 101. The reception processing unit 109 measures the uplink reference signal received from the mobile station apparatus 1, the power of the received signal of the uplink shared channel, etc., measures the reception quality of the channel of the uplink carrier element, and the higher layer processing unit 101 Output to.
　プリアンブル検出部１０３は、受信処理部１０９から入力されたランダムアクセスチャネルの無線リソースから複数のプリアンブルを検出し、プリアンブル各々から同期タイミングずれ量を算出し、シグネチャを検出したランダムアクセスチャネルの情報とシグネチャの番号と同期タイミングのずれ量を上位層処理部１０１に出力する。また、定期的にプリアンブルの受信数から移動局装置１のランダムアクセス送信状況も上位層処理部１０１に通知する。同期タイミング測定部１０５は、同期維持のために受信処理部１０９から入力された上りリンクリファレンスシグナルを測定して、同期タイミングのずれを測定し、測定結果を上位層処理部１０１に報告する。 The preamble detection unit 103 detects a plurality of preambles from the radio resources of the random access channel input from the reception processing unit 109, calculates a synchronization timing shift amount from each preamble, and detects information on the random access channel and the signature And the shift amount of the synchronization timing are output to the upper layer processing unit 101. Further, the upper layer processing unit 101 is also notified of the random access transmission status of the mobile station apparatus 1 from the number of received preambles periodically. The synchronization timing measurement unit 105 measures the uplink reference signal input from the reception processing unit 109 to maintain synchronization, measures the synchronization timing shift, and reports the measurement result to the higher layer processing unit 101.
　送信処理部１１１は、制御部１０７から入力された制御信号に従って、下りリンクリファレンスシグナルを生成し、上位層処理部１０１から入力されたデータ情報、下りリンク制御情報を符号化、および変調し、下りリンク制御チャネル、および下りリンク共用チャネルに配置し、生成した下りリンクリファレンスシグナルと多重して、送信アンテナを介して移動局装置１に信号を送信する。具体的には、送信処理部１１１は、上位層処理部１０１から入力された下りリンクキャリア要素各々の下りリンク制御情報、およびデータ情報を、制御部１０７から入力された制御信号に従って、ターボ符号化、畳込み符号化、ブロック符号化等の符号化を行い、符号化ビットをＱＰＳＫ、１６ＱＡＭ、６４ＱＡＭ等の変調方式で変調する。また、基地局装置３を識別するためのセル識別子（Cell ID）などを基に予め定められた規則で求まる、移動局装置１が既知の系列を下りリンクリファレンスシグナルとして生成し、下りリンク制御チャネルと下りリンク共用チャネルと下りリンクリファレンスシグナルを多重する。 The transmission processing unit 111 generates a downlink reference signal according to the control signal input from the control unit 107, encodes and modulates data information and downlink control information input from the higher layer processing unit 101, and It arrange | positions to a link control channel and a downlink shared channel, multiplexes with the produced | generated downlink reference signal, and transmits a signal to the mobile station apparatus 1 via a transmission antenna. Specifically, the transmission processing unit 111 performs turbo coding on the downlink control information and data information of each downlink carrier element input from the higher layer processing unit 101 according to the control signal input from the control unit 107. Then, encoding such as convolutional encoding and block encoding is performed, and the encoded bits are modulated by a modulation scheme such as QPSK, 16QAM, or 64QAM. In addition, the mobile station apparatus 1 generates a known sequence as a downlink reference signal, which is obtained by a predetermined rule based on a cell identifier (Cell ID) for identifying the base station apparatus 3, and the downlink control channel And the downlink shared channel and the downlink reference signal are multiplexed.
　送信処理部１１１は、多重した変調シンボルを逆高速フーリエ変換（Inverse Fast Fourier Transform;IFFT）して、ＯＦＤＭ方式の変調を行い、ＯＦＤＭ変調されたＯＦＤＭシンボルにガードインターバルを付加し、ベースバンドのディジタル信号を生成し、ベースバンドのディジタル信号をアナログ信号に変換し、アナログ信号から中間周波数の同相成分および直交成分を生成し、中間周波数帯域に対する余分な周波数成分を除去し、中間周波数の信号を高周波数の信号に変換（アップコンバート）し、余分な周波数成分を除去し、電力増幅し、送信アンテナに出力して送信する。 The transmission processing unit 111 performs inverse fast Fourier transform (IFFT) on the multiplexed modulation symbols, performs modulation in the OFDM scheme, adds a guard interval to the OFDM symbol that has been OFDM-modulated, and performs baseband digital Generate a signal, convert the baseband digital signal to an analog signal, generate in-phase and quadrature components of the intermediate frequency from the analog signal, remove excess frequency components for the intermediate frequency band, and increase the signal of the intermediate frequency The signal is converted (up-converted) into a frequency signal, an extra frequency component is removed, the power is amplified, and the signal is output to the transmitting antenna and transmitted.
　＜移動局装置の構成について＞
　図７は、本実施形態に係る移動局装置１の構成を示す概略ブロック図である。図示するように、移動局装置１は、上位層処理部２０１、制御部２０３、受信処理部２０５、複数の受信アンテナ、プリアンブル生成部２０７、送信処理部２０９、および、複数の送信アンテナ、を含んで構成される。また、上位層処理部２０１は、無線リソース制御部２０１１とランダムアクセス処理部２０１２を含んで構成される。尚、図７では、受信アンテナと送信アンテナとを別の構成としたが、信号の入出力を切り替える作用のあるサイリスタなどを用いてアンテナを共有するようにしてもよい。 <Configuration of mobile station device>
FIG. 7 is a schematic block diagram showing the configuration of the mobile station apparatus 1 according to this embodiment. As illustrated, the mobile station apparatus 1 includes an upper layer processing unit 201, a control unit 203, a reception processing unit 205, a plurality of reception antennas, a preamble generation unit 207, a transmission processing unit 209, and a plurality of transmission antennas. Consists of. The upper layer processing unit 201 includes a radio resource control unit 2011 and a random access processing unit 2012. In FIG. 7, the receiving antenna and the transmitting antenna are configured differently. However, the antenna may be shared by using a thyristor or the like that switches the input / output of a signal.
　上位層処理部２０１は、ユーザの操作等により生成された上りリンクキャリア要素毎のデータ情報を、送信処理部２０９に出力する。また、上位層処理部２０１は、パケットデータ統合プロトコル層、無線リンク制御層、無線リソース制御層の処理を行なう。上位層処理部２０１が備える無線リソース制御部２０１１は、自装置の各種設定情報、通信状態、および、バッファ状況の管理などを行っている。上位層処理部２０１のランダムアクセス処理部２０１２は、自装置のランダムアクセスに関する制御を行なっている。 The upper layer processing unit 201 outputs data information for each uplink carrier element generated by a user operation or the like to the transmission processing unit 209. Further, the upper layer processing unit 201 performs processing of the packet data integration protocol layer, the radio link control layer, and the radio resource control layer. The radio resource control unit 2011 included in the upper layer processing unit 201 manages various setting information, communication status, buffer status, and the like of the own device. The random access processing unit 2012 of the upper layer processing unit 201 performs control related to the random access of the own device.
　上記の処理において、上位層処理部２０１が備える無線リソース制御部２０１１は、自装置が割り当てられた下りリンクキャリア要素と上りリンクキャリア要素、Ｃ－ＲＮＴＩなどの各種設定情報の管理を行なう。また、無線リソース制御部２０１１は、各上りリンクキャリア要素の各チャネルに配置する情報を生成し、上りリンクキャリア要素毎に送信処理部２０９に出力する。例えば、無線リソース制御部２０１１は、ランダムアクセスレスポンスでメッセージ３の無線リソースを割り当てられた場合、メッセージ３で送信する情報を生成し、送信処理部２０９に出力する。 In the above processing, the radio resource control unit 2011 included in the higher layer processing unit 201 manages various setting information such as a downlink carrier element, an uplink carrier element, and C-RNTI to which the device itself is assigned. Also, the radio resource control unit 2011 generates information to be arranged in each channel of each uplink carrier element and outputs the information to the transmission processing unit 209 for each uplink carrier element. For example, when the radio resource of the message 3 is assigned by the random access response, the radio resource control unit 2011 generates information to be transmitted by the message 3 and outputs the information to the transmission processing unit 209.
　無線リソース制御部２０１１は、基地局装置３から下りリンク制御チャネルで通知された下りリンク制御情報（例えば、下りリンクグラント、上りリンクグラント）や、ランダムアクセスで通知されたメッセージ３に対する上りリンクグラント、無線リソース制御部２０１１が管理する自装置の各種設定情報に基づき、受信処理部２０５、および送信処理部２０９の制御を行なうために制御情報を生成し、制御部２０３に出力する。 The radio resource control unit 2011 includes downlink control information (for example, downlink grant and uplink grant) notified from the base station device 3 through the downlink control channel, and an uplink grant for the message 3 notified by random access, Based on various setting information of the own device managed by the radio resource control unit 2011, control information is generated to control the reception processing unit 205 and the transmission processing unit 209, and is output to the control unit 203.
　上記の処理において、上位層処理部２０１が備えるランダムアクセス処理部２０１２は、基地局装置３から通知されるランダムアクセスチャネルの構成やランダムアクセスの送信状況を示す情報などのランダムアクセスに関する情報を管理している。ランダムアクセス処理部２０１２は、自装置が基地局装置３からランダムアクセスを開始するよう指示する下りリンク制御情報を受信した場合、および上りリンクで送信するデータ情報があるが、基地局装置３から上りリンクの無線リソースを割り当てられていない場合、ランダムアクセスを開始する。 In the above processing, the random access processing unit 2012 included in the higher layer processing unit 201 manages information related to random access such as information indicating the configuration of the random access channel notified from the base station device 3 and the transmission status of random access. ing. Random access processing unit 2012 receives downlink control information instructing its own device to start random access from base station device 3, and there is data information to be transmitted in the uplink. If no link radio resource is allocated, random access is started.
　ランダムアクセス処理部２０１２は、下りリンクのチャネル品質の情報などから、選択するシグネチャの範囲を決定し、選択したシグネチャの範囲の中からシグネチャをランダムに選択し、更に、プリアンブルを送信する上りリンクキャリア要素とランダムアクセスチャネルの無線リソースを選択する。また、ランダムアクセス処理部２０１２は、選択したシグネチャを含むプリアンブルをプリアンブル生成部２０７が生成するよう、制御部２０３に制御情報を出力し、選択したランダムアクセスチャネルの無線リソースで送信処理部２０９がプリアンブルを送信するよう、制御部２０３に制御情報を出力する。 The random access processing unit 2012 determines a signature range to be selected from downlink channel quality information, etc., randomly selects a signature from the selected signature range, and further transmits an uplink carrier for a preamble Select radio resources for elements and random access channels. Further, the random access processing unit 2012 outputs control information to the control unit 203 so that the preamble generation unit 207 generates a preamble including the selected signature, and the transmission processing unit 209 uses the radio resource of the selected random access channel. The control information is output to the control unit 203 so as to transmit.
　ランダムアクセス処理部２０１２は、プリアンブルを送信した無線リソースに対応するＲＡ－ＲＮＴＩを算出する。また、ランダムアクセス処理部２０１２は、プリアンブルを送信してから予め定められた期間であるランダムアクセスレスポンス受信期間、プリアンブルを送信した上りリンクキャリア要素とペアの下りリンクキャリア要素で、算出したＲＡ－ＲＮＴＩを含む下りリンクグラントを、受信処理部２０５が監視するよう、制御部２０３に制御情報を出力する。 The random access processing unit 2012 calculates the RA-RNTI corresponding to the radio resource that transmitted the preamble. The random access processing unit 2012 also calculates the RA-RNTI calculated by the random access response reception period which is a predetermined period after transmitting the preamble, the uplink carrier element transmitting the preamble and the downlink carrier element paired with the preamble. The control information is output to the control unit 203 so that the reception processing unit 205 monitors the downlink grant including.
　ランダムアクセス処理部２０１２は、算出したＲＡ－ＲＮＴＩを含む下りリンクグラントが無線リソースの割り当てを示すランダムアクセスレスポンスから、自装置が送信したプリアンブルに含まれるシグネチャを検出し、検出したシグネチャに対応する、同期タイミングのずれ量とＴｅｍｐｏｒａｒｙ　Ｃ－ＲＮＴＩとメッセージ３の無線リソースの割り当てを示す上りリンクグラントを取得する。また、ランダムアクセス処理部２０１２は、同期タイミングのずれ量に基づき、送信処理部２０９の上りリンクの信号の送信タイミングを調整するよう、制御部２０３に制御情報を出力する。 The random access processing unit 2012 detects the signature included in the preamble transmitted by the own device from the random access response in which the downlink grant including the calculated RA-RNTI indicates radio resource allocation, and corresponds to the detected signature. An uplink grant indicating the amount of synchronization timing shift, Temporary C-RNTI, and message 3 radio resource allocation is acquired. Further, the random access processing unit 2012 outputs control information to the control unit 203 so as to adjust the transmission timing of the uplink signal of the transmission processing unit 209 based on the amount of synchronization timing shift.
　ランダムアクセス処理部２０１２は、ランダムアクセスレスポンスに含まれる自装置宛ての上りリンクグラントを無線リソース制御部２０１１に出力する。また、ランダムアクセス処理部２０１２は、基地局装置３に割り当てられたＣ－ＲＮＴＩをメッセージ３に含めて生成するよう、無線リソース制御部２０１１に制御情報を出力する。ランダムアクセス処理部２０１２は、メッセージ３を送信してから予め定められた期間であるコンテンションレゾリューション受信期間、基地局装置３に割り当てられた下りリンクキャリア要素でコンテンションレゾリューションの監視（モニタリング）をし、少なくともいずれか１つの下りリンクキャリア要素でコンテンションレゾリューションを検出した場合、ランダムアクセスに成功したと判定し、ランダムアクセスに関する処理を終了する。 The random access processing unit 2012 outputs the uplink grant addressed to the own device included in the random access response to the radio resource control unit 2011. Further, the random access processing unit 2012 outputs control information to the radio resource control unit 2011 so as to generate the C-RNTI assigned to the base station apparatus 3 in the message 3. The random access processing unit 2012 monitors the contention resolution using the downlink carrier element assigned to the base station apparatus 3 during the contention resolution reception period that is a predetermined period after the message 3 is transmitted ( When the contention resolution is detected by at least one downlink carrier element, it is determined that the random access is successful, and the process related to the random access is terminated.
　尚、移動局装置１が基地局装置３と無線通信を開始する初期アクセスの場合や、移動局装置１が無線リンク障害（Radio Link Failure;RLF）を検出した場合、または他の基地局装置３にハンドオーバーをする場合、ランダムアクセス処理部２０１２は、接続要求のメッセージ、または接続再設定要求のメッセージなどの接続の設定を要求する情報をメッセージ３として生成するよう、無線リソース制御部２０１１に制御情報を出力する。また、ランダムアクセス処理部２０１２は、コンテンションレゾリューション受信期間、プリアンブルを送信した上りリンクキャリア要素とペアの下りリンクキャリア要素でコンテンションレゾリューションを、受信処理部２０５で監視するよう制御部２０３に制御情報を出力する。尚、詳細なランダムアクセスの手順は後述する。 In the case of initial access when the mobile station device 1 starts wireless communication with the base station device 3, the mobile station device 1 detects a radio link failure (Radio Link Failure; RLF), or another base station device 3 When performing handover, the random access processing unit 2012 controls the radio resource control unit 2011 to generate information requesting connection setting such as a connection request message or a connection reset request message as the message 3. Output information. In addition, the random access processing unit 2012 controls the contention resolution reception period and the reception processing unit 205 to monitor the contention resolution in the downlink carrier element paired with the uplink carrier element that transmitted the preamble. Control information is output to 203. A detailed random access procedure will be described later.
　制御部２０３は、上位層処理部２０１からの制御情報に基づいて、受信処理部２０５、プリアンブル生成部２０７、および送信処理部２０９の制御を行なう制御信号を生成する。制御部２０３は、生成した制御信号を受信処理部２０５、プリアンブル生成部２０７、および送信処理部２０９に出力して受信処理部２０５、プリアンブル生成部２０７、および送信処理部２０９の制御を行なう。受信処理部２０５は、制御部２０３から入力された制御信号に従って、受信アンテナを介して基地局装置３から受信した受信信号を、復調、復号し、復号した情報を上位層処理部２０１に出力する。また、受信処理部２０５は、検出した下りリンクリファレンスシグナルの受信品質等に基づいて、チャネル品質情報を生成し、上位層処理部２０１、および送信処理部２０９に出力する。 The control unit 203 generates a control signal for controlling the reception processing unit 205, the preamble generation unit 207, and the transmission processing unit 209 based on the control information from the higher layer processing unit 201. The control unit 203 outputs the generated control signal to the reception processing unit 205, preamble generation unit 207, and transmission processing unit 209, and controls the reception processing unit 205, preamble generation unit 207, and transmission processing unit 209. The reception processing unit 205 demodulates and decodes the reception signal received from the base station apparatus 3 via the reception antenna according to the control signal input from the control unit 203, and outputs the decoded information to the higher layer processing unit 201. . Also, the reception processing unit 205 generates channel quality information based on the detected reception quality of the downlink reference signal and outputs the channel quality information to the higher layer processing unit 201 and the transmission processing unit 209.
　受信処理部２０５は、制御部２０３から入力された制御信号に従って、受信アンテナを介して基地局装置３から受信した受信信号を、復調、復号し、復号した情報を上位層処理部２０１に出力する。また、受信処理部２０５は、検出した下りリンクリファレンスシグナルの受信品質等に基づいて、チャネル品質情報を生成し、上位層処理部２０１、および送信処理部２０９に出力する。 The reception processing unit 205 demodulates and decodes the reception signal received from the base station apparatus 3 via the reception antenna according to the control signal input from the control unit 203, and outputs the decoded information to the higher layer processing unit 201. . Also, the reception processing unit 205 generates channel quality information based on the detected reception quality of the downlink reference signal and outputs the channel quality information to the higher layer processing unit 201 and the transmission processing unit 209.
　受信処理部２０５は、抽出した信号を下りリンクキャリア要素毎に、下りリンク制御チャネル、下りリンク共用チャネル、および下りリンクリファレンスシグナルに配置された信号に、それぞれ分離する。尚、この分離は、下りリンクグラントで通知された無線リソースの割り当て情報などに基づいて行われる。また、受信処理部２０５は、分離した下りリンクリファレンスシグナルから伝搬路の推定値を求め、下りリンク制御チャネルと下りリンク共用チャネルの伝搬路の補償を行なう。また、受信処理部２０５は、分離した下りリンクリファレンスシグナルの受信品質等に基づいて、チャネル品質情報を生成し、上位層処理部２０１、および送信処理部２０９に出力する。 The reception processing unit 205 separates the extracted signal into signals arranged in the downlink control channel, the downlink shared channel, and the downlink reference signal for each downlink carrier element. This separation is performed based on radio resource allocation information notified by the downlink grant. Further, the reception processing unit 205 obtains an estimated value of the propagation path from the separated downlink reference signal, and compensates the propagation path of the downlink control channel and the downlink shared channel. Also, the reception processing unit 205 generates channel quality information based on the reception quality of the separated downlink reference signal and outputs the channel quality information to the higher layer processing unit 201 and the transmission processing unit 209.
　受信処理部２０５は、下りリンク制御チャネルに対して、ＱＰＳＫ変調方式の復調を行ない、自装置が基地局装置３に割り当てられたＣ－ＲＮＴＩを含む下りリンクグラントと上りリンクグラント、および自装置がプリアンブルを送信したランダムアクセスチャネルの無線リソースに対応するＲＡ－ＲＮＴＩを含む下りリンクグラントを監視し、復号を試みる。受信処理部２０５は、下りリンク制御チャネルの復号に成功した場合、復号した下りリンク制御情報を上位層処理部２０１に出力する。受信処理部２０５は、下りリンク共用チャネルに対して、ＱＰＳＫ、１６ＱＡＭ、６４ＱＡＭ等の下りリンクグラントで通知された変調方式の復調を行ない、下りリンクグラントで通知された符号化率に対する復号を行い、復号したデータ情報を上位層処理部２０１へ出力する。 The reception processing unit 205 demodulates the QPSK modulation scheme for the downlink control channel, and the own device includes the downlink grant and the uplink grant including the C-RNTI assigned to the base station device 3, and the own device. The downlink grant including RA-RNTI corresponding to the radio resource of the random access channel that transmitted the preamble is monitored, and decoding is attempted. When the downlink processing channel is successfully decoded, the reception processing unit 205 outputs the decoded downlink control information to the higher layer processing unit 201. The reception processing unit 205 performs demodulation of the modulation scheme notified by the downlink grant such as QPSK, 16QAM, and 64QAM on the downlink shared channel, and decodes the coding rate notified by the downlink grant. The decrypted data information is output to the upper layer processing unit 201.
　プリアンブル生成部２０７は、制御部２０３から入力された制御信号に従って、ランダムアクセス処理部２０１２が選択したシグネチャを含んだプリアンブルを生成し、送信処理部２０９に出力する。送信処理部２０９は、制御部２０３から入力された制御信号に従って、上りリンクリファレンスシグナルを生成し、上位層処理部２０１から入力されたデータ情報、および受信処理部２０５から入力されたチャネル品質情報、を符号化および変調し、上りリンク共用チャネル、および上りリンク制御チャネルに配置し、生成した上りリンクリファレンスシグナルと多重して、送信アンテナを介して基地局装置３に送信する。また、送信処理部２０９は、制御部２０３から入力された制御信号に従って、プリアンブル生成部２０７から入力されたプリアンブルを、ランダムアクセスチャネルに配置し、送信アンテナを介して基地局装置３に送信する。 The preamble generation unit 207 generates a preamble including the signature selected by the random access processing unit 2012 according to the control signal input from the control unit 203, and outputs the preamble to the transmission processing unit 209. The transmission processing unit 209 generates an uplink reference signal according to the control signal input from the control unit 203, the data information input from the higher layer processing unit 201, the channel quality information input from the reception processing unit 205, Is encoded and modulated, arranged in the uplink shared channel and the uplink control channel, multiplexed with the generated uplink reference signal, and transmitted to the base station apparatus 3 via the transmission antenna. Also, the transmission processing unit 209 places the preamble input from the preamble generation unit 207 in a random access channel according to the control signal input from the control unit 203, and transmits the preamble to the base station apparatus 3 via the transmission antenna.
　具体的には、送信処理部２０９は、上位層処理部２０１と受信処理部２０５から入力された各上りリンクキャリア要素の上りリンク制御情報、およびデータ情報を、制御部２０３から入力された制御信号に従って、ターボ符号化、畳込み符号化、ブロック符号化等の符号化を行い、符号化ビットをＢＰＳＫ、ＱＰＳＫ、１６ＱＡＭ、６４ＱＡＭ等の変調方式で変調する。 Specifically, the transmission processing unit 209 receives the uplink control information and data information of each uplink carrier element input from the higher layer processing unit 201 and the reception processing unit 205 as control signals input from the control unit 203. Accordingly, encoding such as turbo encoding, convolutional encoding, and block encoding is performed, and the encoded bits are modulated by a modulation scheme such as BPSK, QPSK, 16QAM, or 64QAM.
　送信処理部２０９は、基地局装置３を識別するためのセル識別子などを基に予め定められた規則で求まる、基地局装置３が既知の系列を上りリンクリファレンスシグナルとして生成する。送信処理部２０９は、上りリンク制御チャネルの変調シンボルを符号で拡散し、上りリンク共用チャネルの変調シンボルを並列に並び替えてから離散フーリエ変換（Discrete Fourier Transform;DFT）し、生成した上りリンクリファレンスシグナルと多重する。また、送信処理部２０９は、プリアンブル生成部２０７から入力されたプリアンブルを、ランダムアクセスチャネルに配置する。 The transmission processing unit 209 generates, as an uplink reference signal, a sequence known by the base station device 3 that is obtained by a predetermined rule based on a cell identifier for identifying the base station device 3 or the like. The transmission processing unit 209 spreads the modulation symbols of the uplink control channel with codes, rearranges the modulation symbols of the uplink shared channel in parallel, and then performs a discrete Fourier transform (DFT) to generate the generated uplink reference Multiplex with signal. Further, the transmission processing unit 209 arranges the preamble input from the preamble generation unit 207 in the random access channel.
　送信処理部２０９は、多重した信号を逆高速フーリエ変換して、ＳＣ－ＦＤＭＡ方式の変調を行い、ＳＣ－ＦＤＭＡ変調されたＳＣ－ＦＤＭＡシンボルにガードインターバルを付加し、ベースバンドのディジタル信号を生成し、ベースバンドのディジタル信号をアナログ信号に変換し、アナログ信号から中間周波数の同相成分および直交成分を生成し、中間周波数帯域に対する余分な周波数成分を除去し、中間周波数の信号を高周波数の信号に変換（アップコンバート）し、余分な周波数成分を除去し、電力増幅し、送信アンテナに出力して送信する。 The transmission processing unit 209 performs inverse fast Fourier transform on the multiplexed signal, performs SC-FDMA modulation, adds a guard interval to the SC-FDMA modulated SC-FDMA symbol, and generates a baseband digital signal Convert the baseband digital signal to an analog signal, generate in-phase and quadrature components of the intermediate frequency from the analog signal, remove excess frequency components for the intermediate frequency band, and convert the intermediate-frequency signal to a high-frequency signal Is converted (up-converted) to remove excess frequency components, power-amplified, and output to a transmission antenna for transmission.
　＜無線通信システムの動作について＞
　以下、無線通信システムの動作について説明をする。 <Operation of wireless communication system>
Hereinafter, the operation of the wireless communication system will be described.
　図８は、本実施形態に係る無線通信システムのランダムアクセスの一例を示す図である。図８では、移動局装置１が基地局装置３に、図２に示すような下りリンクキャリア要素（DCC-1、DCC-2、DCC-3）と上りリンクキャリア要素（UCC-1、UCC-2、UCC-3）を割り当てられ、移動局装置１がＵＣＣ－１でメッセージ１を送信した場合を示す。まず、移動局装置１が、下りリンクキャリア要素のチャネル品質の情報などから、プリアンブルを送信する上りリンクキャリア要素とランダムアクセスチャネルの無線リソースと、選択するシグネチャの範囲を決定し、選択されたシグネチャの範囲の中からシグネチャをランダムに選択し、選択した上りリンクキャリア要素（例えば、UCC-1）のランダムアクセスチャネルでプリアンブルを送信する（メッセージ１（N1））。 FIG. 8 is a diagram illustrating an example of random access of the wireless communication system according to the present embodiment. In FIG. 8, the mobile station apparatus 1 connects the base station apparatus 3 with downlink carrier elements (DCC-1, DCC-2, DCC-3) and uplink carrier elements (UCC-1, UCC-) as shown in FIG. 2, UCC-3) is assigned, and mobile station apparatus 1 transmits message 1 using UCC-1. First, the mobile station apparatus 1 determines an uplink carrier element for transmitting a preamble, a radio resource of a random access channel, a range of signatures to be selected, and a signature range to be selected from information on channel quality of the downlink carrier elements. A signature is randomly selected from the above range, and a preamble is transmitted on the random access channel of the selected uplink carrier element (for example, UCC-1) (message 1 (N1)).
　基地局装置３は、ＵＣＣ－１で移動局装置１からのプリアンブルを検出すると、プリアンブルから移動局装置１と基地局装置３間の同期タイミングのずれを算出し、移動局装置１がＵＣＣ－１でメッセージ３を送信するためのスケジューリング（上りリンクの無線リソース割り当て、送信フォーマット（メッセージサイズ）などの指定）を行ない、スケジューリングの結果を示す上りリンクグラントを生成し、プリアンブルを送信した移動局装置１にＴｅｍｐｏｒａｒｙ　Ｃ－ＲＮＴＩを割り当てる。 When the base station apparatus 3 detects the preamble from the mobile station apparatus 1 using UCC-1, the base station apparatus 3 calculates a synchronization timing shift between the mobile station apparatus 1 and the base station apparatus 3 from the preamble. Mobile station apparatus 1 that performs scheduling for transmitting message 3 (designation of uplink radio resource allocation, transmission format (message size), etc.), generates an uplink grant indicating the scheduling result, and transmits the preamble Assign Temporary C-RNTI.
　基地局装置３は、生成した上りリンクグラント、同期タイミングのずれ情報、移動局装置１に割り当てたＴｅｍｐｏｒａｒｙ　Ｃ－ＲＮＴＩ、および検出したプリアンブルのシグネチャの番号を含むランダムアクセスレスポンスを生成し、プリアンブルを検出したＵＣＣ－１が対応するＤＣＣ－１の下りリンク共用チャネルで送信する。また、基地局装置３は、ランダムアクセスレスポンスの無線リソースの割り当てを示す下りリンクグラントに、プリアンブルを検出したランダムアクセスチャネルの無線リソースに対応するＲＡ－ＲＮＴＩを含め、下りリンク共用チャネルを送信するのと同じＤＣＣ－１で下りリンクグラントを送信する（メッセージ２（N2))。 The base station apparatus 3 generates a random access response including the generated uplink grant, synchronization timing shift information, Temporary C-RNTI assigned to the mobile station apparatus 1, and the number of the detected preamble signature, and detects the preamble. The UCC-1 that has been transmitted transmits on the corresponding downlink shared channel of DCC-1. Further, the base station apparatus 3 transmits the downlink shared channel including the RA-RNTI corresponding to the radio resource of the random access channel in which the preamble is detected in the downlink grant indicating the allocation of the radio resource of the random access response. The downlink grant is transmitted using the same DCC-1 as (Message 2 (N2)).
　移動局装置１は、ＤＣＣ－１の下りリンク制御チャネルにプリアンブルを送信したランダムアクセスチャネルの無線リソースに対応するＲＡ－ＲＮＴＩが含まれていることを確認すると、下りリンク制御チャネルが無線リソース割り当てを示す下りリンク共用チャネルに配置されたランダムアクセスレスポンスを確認する。そして、移動局装置１は、ランダムアクセスレスポンスから、自装置が送信したプリアンブルに含まれるシグネチャの番号が含まれる応答を抽出し、同期タイミングのずれを補正する。更に、移動局装置１は、ランダムアクセスに含まれる上りリンクグラントで無線リソースを割り当てられたＵＣＣ－１の無線リソースで、予め基地局装置３から通知されたＣ－ＲＮＴＩを上りリンク共用チャネルに含め、メッセージ１を送信したのと同じＵＣＣ－１で送信する（メッセージ３（N3））。 When the mobile station apparatus 1 confirms that the RA-RNTI corresponding to the radio resource of the random access channel that transmitted the preamble is included in the downlink control channel of DCC-1, the downlink control channel allocates radio resources. Check the random access response allocated to the indicated downlink shared channel. Then, the mobile station apparatus 1 extracts a response including the signature number included in the preamble transmitted by the mobile apparatus from the random access response, and corrects the synchronization timing shift. Further, the mobile station apparatus 1 includes the C-RNTI notified in advance from the base station apparatus 3 in the uplink shared channel with the UCC-1 radio resource to which radio resources are allocated by the uplink grant included in the random access. The message is transmitted using the same UCC-1 as the message 1 (message 3 (N3)).
　基地局装置３は、ＵＣＣ－１で移動局装置１からのメッセージ３を受信すると、受信したメッセージ３に含まれるＣ－ＲＮＴＩを使用して移動局装置１間で衝突が起こっているかどうか判断するためのコンテンションレゾリューションを移動局装置１に送信する（メッセージ４（N4))。 When the base station apparatus 3 receives the message 3 from the mobile station apparatus 1 by the UCC-1, the base station apparatus 3 determines whether a collision has occurred between the mobile station apparatuses 1 using the C-RNTI included in the received message 3 Is transmitted to the mobile station apparatus 1 (message 4 (N4)).
　基地局装置３は、ＵＣＣ－１で移動局装置１からのメッセージ３を受信し、移動局装置１自身がランダムアクセスを開始していた場合には、以下のようにＣ－ＲＮＴＩを割り当てた移動局装置１に無線リソースを割り当てる。割り当て方法としては、基地局装置３が割り当てた複数の上りリンクキャリア要素（UCC-1、UCC-2、UCC-3）の中から１つ以上の上りリンクキャリア要素の無線リソースを割り当てる。また、基地局装置３は、上りリンクグラントにＣ－ＲＮＴＩを含め、移動局装置１に割り当てた複数の下りリンクキャリア要素（DCC-1、DCC-2、DCC-3）の中から１つ以上の下りリンクキャリア要素に上りリンクグラントを配置する。 When the base station device 3 receives the message 3 from the mobile station device 1 at UCC-1 and the mobile station device 1 itself has started random access, the base station device 3 moves with the C-RNTI assigned as follows: A radio resource is allocated to the station apparatus 1. As an allocation method, radio resources of one or more uplink carrier elements are allocated from among a plurality of uplink carrier elements (UCC-1, UCC-2, UCC-3) allocated by the base station apparatus 3. Further, the base station apparatus 3 includes one or more of a plurality of downlink carrier elements (DCC-1, DCC-2, DCC-3) allocated to the mobile station apparatus 1 by including C-RNTI in the uplink grant. An uplink grant is allocated to the downlink carrier element of
　移動局装置１は、自装置の判断でランダムアクセスを開始していた場合、基地局装置３に自装置が割り当てられた複数の下りリンクキャリア要素（DCC-1、DCC-2、DCC-3）でＣ－ＲＮＴＩを含む上りリンクグラントを監視する。移動局装置１は、基地局装置３に割り当てられた複数の下りリンクキャリア要素（DCC-1、DCC-2、DCC-3）の少なくともいずれかの下りリンクキャリア要素で、上りリンクグラントに予め通知されたＣ－ＲＮＴＩが含まれていることを確認すると、コンテンションレゾリューションに成功したと判断しランダムアクセスを終了する。 When the mobile station apparatus 1 has started random access according to its own determination, the mobile station apparatus 1 has a plurality of downlink carrier elements (DCC-1, DCC-2, DCC-3) to which the own apparatus is allocated. To monitor the uplink grant including C-RNTI. The mobile station apparatus 1 notifies the uplink grant in advance using at least one of the plurality of downlink carrier elements (DCC-1, DCC-2, DCC-3) assigned to the base station apparatus 3. If it is confirmed that the received C-RNTI is included, it is determined that the contention resolution is successful, and the random access is terminated.
　基地局装置３は、ＵＣＣ－１で移動局装置１からのメッセージ３を受信し、基地局装置３が移動局装置１にランダムアクセスを開始するよう下りリンク制御チャネルで通知していた場合には、以下のようにＣ－ＲＮＴＩを割り当てた移動局装置１に無線リソースを割り当てる。割り当て方法としては、基地局装置３が割り当てた複数の上りリンクキャリア要素（UCC-1、UCC-2、UCC-3）と複数の下りリンクキャリア要素（DCC-1、DCC-2、DCC-3）の中から、１つ以上の上りリンクまたは下りリンクのキャリア要素の無線リソースを割り当てる。また、基地局装置３は、上りリンクグラント、または下りリンクグラントにＣ－ＲＮＴＩを含め、移動局装置１に割り当てた複数の下りリンクキャリア要素（DCC-1、DCC-2、DCC-3）の中から１つ以上の下りリンクキャリア要素に上りリンクグラント、または下りリンクグラントを配置する。 When the base station apparatus 3 receives the message 3 from the mobile station apparatus 1 at UCC-1 and the base station apparatus 3 notifies the mobile station apparatus 1 to start random access using the downlink control channel, Then, radio resources are allocated to the mobile station apparatus 1 to which C-RNTI is allocated as follows. As an allocation method, a plurality of uplink carrier elements (UCC-1, UCC-2, UCC-3) and a plurality of downlink carrier elements (DCC-1, DCC-2, DCC-3) allocated by the base station apparatus 3 are used. ) To allocate radio resources of one or more uplink or downlink carrier elements. Further, the base station apparatus 3 includes C-RNTI in the uplink grant or the downlink grant, and includes a plurality of downlink carrier elements (DCC-1, DCC-2, DCC-3) allocated to the mobile station apparatus 1. An uplink grant or a downlink grant is arranged in one or more downlink carrier elements from the inside.
　移動局装置１は、基地局装置３から通知された下りリンク制御チャネルでランダムアクセスの開始を指示されていた場合、基地局装置３に自装置が割り当てられた複数の下りリンクキャリア要素（DCC-1、DCC-2、DCC-3）でＣ－ＲＮＴＩを含む上りリンクグラント、および下りリンクグラントを監視する。移動局装置１は、基地局装置３に自装置が割り当てられた下りリンクキャリア要素（DCC-1、DCC-2、DCC-3）の少なくともいずれかの下りリンクキャリア要素で、上りリンクグラント、または下りリンクグラントに、予め通知されたＣ－ＲＮＴＩが含まれていることを確認すると、コンテンションレゾリューションに成功したと判断し、ランダムアクセスを終了する。 When the mobile station apparatus 1 is instructed to start random access using the downlink control channel notified from the base station apparatus 3, the mobile station apparatus 1 has a plurality of downlink carrier elements (DCC- 1, DCC-2, DCC-3) monitor the uplink grant including C-RNTI and the downlink grant. The mobile station apparatus 1 is an uplink grant or at least one downlink carrier element of the downlink carrier elements (DCC-1, DCC-2, DCC-3) to which the mobile station apparatus 1 is allocated. When it is confirmed that the C-RNTI notified in advance is included in the downlink grant, it is determined that the contention resolution is successful, and the random access is terminated.
　尚、移動局装置１が基地局装置３と無線通信を開始する初期アクセスの場合や、移動局装置１が無線リンク障害（Radio Link Failure;RLF）を検出した場合、または他の基地局装置３にハンドオーバーをする場合、移動局装置１は接続要求のメッセージ、または接続再設定要求のメッセージなどの接続の設定を要求する情報をメッセージ３として基地局装置３に送信する。接続の設定を要求する情報には、移動局装置１を識別するための情報が含まれる。基地局装置３は、メッセージ３に含まれる移動局装置１を識別するための情報の一部、または全てを含むＵＥ　ｃｏｎｔｅｎｔｉｏｎ　ｒｅｓｏｌｕｔｉｏｎ　ｉｄｅｎｔｉｔｙを生成し、プリアンブルを検出した上りリンクキャリア要素とペアの下りリンクキャリア要素の無線リソースの中からＵＥ　ｃｏｎｔｅｎｔｉｏｎ　ｒｅｓｏｌｕｔｉｏｎ　ｉｄｅｎｔｉｔｙを含む下りリンク共用チャネルを配置する無線リソースを割り当て、下りリンクグラントにメッセージ２で割り当てたＴｅｍｐｏｒａｒｙ　Ｃ－ＲＮＴＩを含め送信する。 In the case of initial access when the mobile station device 1 starts wireless communication with the base station device 3, the mobile station device 1 detects a radio link failure (Radio Link Failure; RLF), or another base station device 3 Mobile station apparatus 1 transmits information requesting connection setting such as a connection request message or a connection reset request message to base station apparatus 3 as message 3. Information for requesting connection setting includes information for identifying the mobile station apparatus 1. The base station device 3 generates a UE contention resolution identity including a part or all of the information for identifying the mobile station device 1 included in the message 3, and is a downlink paired with the uplink carrier element that has detected the preamble. A radio resource for allocating a downlink shared channel including UE contention resolution identity is allocated from the radio resources of the carrier element, and the Temporary C-RNTI allocated in message 2 is transmitted to the downlink grant.
　この場合、移動局装置１は、プリアンブルを送信した上りリンクキャリア要素とペアの下りリンクキャリア要素でＴｅｍｐｏｒａｒｙ　Ｃ－ＲＮＴＩを含む下りリンクグラントを監視する。移動局装置１は、メッセージ２で基地局装置３から通知されたＴｅｍｐｏｒａｒｙ　Ｃ－ＲＮＴＩを含む下りリンクグラントを確認すると、下りリンクグラントが無線リソースの割り当てを示す下りリンク共用チャネルに含まれているＵＥ　ｃｏｎｔｅｎｔｉｏｎ　ｒｅｓｏｌｕｔｉｏｎ　ｉｄｅｎｔｉｔｙを確認し、ＵＥ　ｃｏｎｔｅｎｔｉｏｎ　ｒｅｓｏｌｕｓｉｏｎ　ｉｄｅｎｔｉｔｙに、自装置がメッセージ３で送信した自装置を識別するための情報の一部、または全てを確認すると、コンテンションレゾリューションに成功したと判断し、ランダムアクセスを終了する。 In this case, the mobile station apparatus 1 monitors the downlink grant including the Temporary C-RNTI with the downlink carrier element paired with the uplink carrier element that transmitted the preamble. When the mobile station apparatus 1 confirms the downlink grant including the Temporary C-RNTI notified from the base station apparatus 3 in the message 2, the downlink grant is included in the downlink shared channel indicating the radio resource allocation. Check the contention resolution identity, and if the UE contention resolution identity confirms part or all of the information for identifying the local device sent by the device in message 3, it is determined that the contention resolution was successful. End random access.
　尚、移動局装置１は、ランダムアクセスレスポンス受信期間内に、移動局装置１が送信したプリアンブルのシグネチャの番号を含んだランダムアクセスレスポンスを受信しない場合、または、コンテンションレゾリューション受信期間内に、自装置の識別情報を検出しなかった場合に、プリアンブルの送信からやり直す。 The mobile station device 1 does not receive a random access response including the preamble signature number transmitted by the mobile station device 1 within the random access response reception period, or within the contention resolution reception period. When the identification information of the own device is not detected, the process starts again from the transmission of the preamble.
　図９は、本実施形態に係る基地局装置３の動作の一例を示すフローチャートである。基地局装置３は、下りリンクキャリア要素各々で、下りリンクキャリア要素が対応する上りリンクキャリア要素のランダムアクセス送信に関する情報を報知し、移動局装置１に通知する（ステップＳ１０１）。基地局装置３は、上りリンクキャリア要素各々に割り当てたランダムアクセスチャネルの無線リソースでプリアンブルを監視し、プリアンブルを検出する（ステップＳ１０２）。基地局装置３は、検出したプリアンブルから移動局装置１と基地局装置３間の同期タイミングのずれを算出する（ステップＳ１０３）。基地局装置３は、プリアンブルを検出した上りリンクキャリア要素の無線リソースの割り当て、送信フォーマット（メッセージ３のサイズ）、プリアンブルを送信した移動局装置１に割り当てるＴｅｍｐｏｒａｒｙ　Ｃ－ＲＮＴＩなどを決定する（ステップＳ１０４）。 FIG. 9 is a flowchart showing an example of the operation of the base station apparatus 3 according to the present embodiment. The base station apparatus 3 broadcasts information on the random access transmission of the uplink carrier element corresponding to the downlink carrier element for each downlink carrier element, and notifies the mobile station apparatus 1 of the information (step S101). The base station apparatus 3 monitors the preamble with the radio resource of the random access channel assigned to each uplink carrier element, and detects the preamble (step S102). The base station device 3 calculates a synchronization timing shift between the mobile station device 1 and the base station device 3 from the detected preamble (step S103). The base station apparatus 3 determines the radio resource allocation of the uplink carrier element that detected the preamble, the transmission format (size of the message 3), the Temporary C-RNTI allocated to the mobile station apparatus 1 that transmitted the preamble, and the like (step S104). ).
　基地局装置３は、ステップＳ１０２で算出した同期タイミングのずれ情報、ステップＳ１０３で決定した無線リソース割り当て、Ｔｅｍｐｏｒａｒｙ　Ｃ－ＲＮＴＩなどを含むランダムアクセスレスポンスを、プリアンブルを検出した上りリンクキャリア要素に対応する下りリンクキャリア要素の下りリンク共用チャネルで送信する（ステップＳ１０５）。また、このメッセージ２を含む下りリンク共用チャネルの無線リソースの割り当てを示す下りリンク制御チャネルに、プリアンブルを検出したランダムアクセスチャネルの無線リソースが対応するＲＡ－ＲＮＴＩを含め、下りリンク共用チャネルと同じ下りリンクキャリア要素で送信する。 The base station apparatus 3 transmits a random access response including the synchronization timing shift information calculated in step S102, the radio resource allocation determined in step S103, Temporary C-RNTI, and the like corresponding to the uplink carrier element that detected the preamble. It transmits on the downlink shared channel of a link carrier element (step S105). Further, the downlink control channel indicating the allocation of the radio resource of the downlink shared channel including this message 2 includes the RA-RNTI corresponding to the radio resource of the random access channel that detected the preamble, and the same downlink as the downlink shared channel. Transmit on the link carrier element.
　基地局装置３は、ステップＳ１０３で割り当てた上りリンクの無線リソースで移動局装置１が送信したメッセージ３を受信する（ステップＳ１０６）。基地局装置３が受信したメッセージ３で、基地局装置３が移動局装置１に予め割り当てたＣ－ＲＮＴＩを検出した場合（ステップＳ１０７）、基地局装置３は、ステップＳ１０７で検出したＣ－ＲＮＴＩを割り当てた移動局装置１に割り当てている下りリンクキャリア要素をセットする（ステップＳ１０８）。メッセージ３で、基地局装置３が移動局装置１に予め割り当てたＣ－ＲＮＴＩが検出できなかった場合、つまり、接続の設定を要求する情報を検出した場合（ステップＳ１０７）、基地局装置３は、メッセージ２を送信したのと同じ下りリンクキャリア要素をセットする（ステップＳ１０９）。 The base station apparatus 3 receives the message 3 transmitted from the mobile station apparatus 1 using the uplink radio resource allocated in step S103 (step S106). When the base station apparatus 3 detects a C-RNTI previously assigned to the mobile station apparatus 1 in the message 3 received by the base station apparatus 3 (step S107), the base station apparatus 3 detects the C-RNTI detected in step S107. The downlink carrier element assigned to the mobile station apparatus 1 to which is assigned is set (step S108). When the C-RNTI previously assigned to the mobile station device 1 by the base station device 3 cannot be detected in the message 3, that is, when information requesting connection setting is detected (step S107), the base station device 3 Then, the same downlink carrier element as that which transmitted message 2 is set (step S109).
　ステップＳ１０８、またはステップＳ１０９でセットした下りリンクキャリア要素でコンテンションレゾリューションを送信する（ステップＳ１１０）。ステップＳ１１０の後、基地局装置３は、ランダムアクセスに関する処理を終了する。 The contention resolution is transmitted using the downlink carrier element set in step S108 or step S109 (step S110). After step S110, the base station apparatus 3 ends the process related to random access.
　図１０Ａ、図１０Ｂは、本実施形態に係る移動局装置１の動作の一例を示すフローチャートである。移動局装置１は、基地局装置３に割り当てられた下りリンクキャリア要素から、下りリンクキャリア要素各々で報知されている、下りリンクキャリア要素が対応する上りリンクキャリア要素のランダムアクセス送信に関する情報を取得する（ステップＳ２０１）。移動局装置１は、下りリンクキャリア要素のチャネル品質に基づき、シグネチャと、プリアンブルを送信する上りリンクキャリア要素と、ランダムアクセスチャネルの無線リソースを選択する（ステップＳ２０２）。移動局装置１は、ステップＳ２０２で選択したランダムアクセスチャネルの無線リソースでプリアンブルを送信する（ステップＳ２０３）。移動局装置１は、ステップＳ２０３でプリアンブルを送信した上りリンクキャリア要素に対応する下りリンクキャリア要素で、一定の期間メッセージ２を監視する（ステップＳ２０４）。 10A and 10B are flowcharts showing an example of the operation of the mobile station apparatus 1 according to the present embodiment. The mobile station apparatus 1 obtains information on the random access transmission of the uplink carrier element corresponding to the downlink carrier element, which is broadcast in each downlink carrier element, from the downlink carrier element allocated to the base station apparatus 3 (Step S201). Based on the channel quality of the downlink carrier element, the mobile station apparatus 1 selects a signature, an uplink carrier element that transmits a preamble, and a radio resource of a random access channel (step S202). The mobile station apparatus 1 transmits a preamble using the radio resource of the random access channel selected in step S202 (step S203). The mobile station apparatus 1 monitors the message 2 for a certain period of time with a downlink carrier element corresponding to the uplink carrier element that has transmitted the preamble at step S203 (step S204).
　移動局装置１は、メッセージ２の検出に成功した場合（ステップＳ２０５）、メッセージ２に含まれる同期タイミングのずれ情報に基づき、上りリンク送信タイミングを補正する（ステップＳ２０６）。移動局装置１は、メッセージ２の検出に失敗した場合（ステップＳ２０５）、ランダムアクセスチャネルの送信回数のカウンタを１つ増やす（ステップＳ２１４）。移動局装置１は、メッセージ２に含まれる無線リソースの割り当てに基づき、プリアンブルを送信したのと同じ上りリンクキャリア要素で、自装置を識別するための情報を含めたメッセージ３を送信する（ステップＳ２０７）。基地局装置３と移動局装置１が接続状態で、移動局装置１が基地局装置３にＣ－ＲＮＴＩを割り当てられている場合、移動局装置１はメッセージ３にＣ－ＲＮＴＩを含めて送信し、基地局装置３と移動局装置が接続状態でなく、移動局装置１が基地局装置３にＣ－ＲＮＴＩを割り当てられていない場合、移動局装置１はメッセージ３に接続の設定を要求する情報を含めて送信する。 When the mobile station apparatus 1 succeeds in detecting the message 2 (step S205), the mobile station apparatus 1 corrects the uplink transmission timing based on the synchronization timing shift information included in the message 2 (step S206). When the mobile station apparatus 1 fails to detect the message 2 (step S205), the mobile station apparatus 1 increments the transmission counter of the random access channel by one (step S214). Based on the radio resource allocation included in the message 2, the mobile station apparatus 1 transmits the message 3 including the information for identifying the own apparatus using the same uplink carrier element that transmitted the preamble (step S207). ). When the base station device 3 and the mobile station device 1 are in a connected state and the mobile station device 1 is assigned C-RNTI to the base station device 3, the mobile station device 1 transmits the message 3 including the C-RNTI. If the base station apparatus 3 and the mobile station apparatus are not in a connected state and the mobile station apparatus 1 has not been assigned a C-RNTI to the base station apparatus 3, the mobile station apparatus 1 uses message 3 to request connection setting information. Send including
　移動局装置１は、基地局装置３と接続状態でありメッセージ３にＣ－ＲＮＴＩを含めた場合（ステップＳ２０８）、基地局装置３に周波数帯域集約として割り当てられた下りリンクキャリア要素をセットする（ステップＳ２０９）。移動局装置１は、基地局装置３と接続状態でなくメッセージ３に接続の設定を要求する情報を含めて送信した場合（ステップＳ２０８）、メッセージ２を受信したのと同じ下りリンクキャリア要素をセットする（ステップＳ２１０）。移動局装置１は、ステップＳ２０９、またはステップＳ２１０でセットした下りリンクキャリア要素で、一定の期間メッセージ４を監視する（ステップＳ２１１）。 When the mobile station apparatus 1 is connected to the base station apparatus 3 and includes C-RNTI in the message 3 (step S208), the mobile station apparatus 1 sets the downlink carrier element allocated to the base station apparatus 3 as frequency band aggregation (step S208). Step S209). When the mobile station apparatus 1 transmits the message 3 including information requesting connection setting instead of being connected to the base station apparatus 3 (step S208), the mobile station apparatus 1 sets the same downlink carrier element that received the message 2 (Step S210). The mobile station apparatus 1 monitors the message 4 for a certain period with the downlink carrier element set in step S209 or step S210 (step S211).
　移動局装置１は、メッセージ４の受信に成功した場合、ランダムアクセスに成功したと判定し（ステップＳ２１２）、ランダムアクセスに関する処理を終了する。メッセージ４の受信に失敗した場合（ステップＳ２１２）、移動局装置１は、ステップＳ２０７で送信したメッセージ３の情報をバッファから消去する（ステップＳ２１３）。続いて、移動局装置１は、ランダムアクセスチャネルの送信回数のカウンタを１つ増やす（ステップＳ２１４）。移動局装置１は、ランダムアクセスチャネルの送信回数のカウンタが、最大送信回数を超えている場合（ステップＳ２１５）、ランダムアクセスの動作に問題があると判定して、ランダムアクセスに関する処理を終了する。送信回数が、最大送信回数を超えていない場合（ステップＳ２１５）、移動局装置１は、次のプリアンブルを送信しない期間（バックオフ）を、０から最大のバックオフの期間の間からランダムに選択する（ステップＳ２１６）。次に、ステップＳ２０２に進み、シグネチャと、プリアンブルを送信する上りリンクキャリア要素と、ランダムアクセスチャネルの無線リソースの選択からやりなおす。 If the mobile station apparatus 1 has successfully received the message 4, the mobile station apparatus 1 determines that the random access has succeeded (step S 212), and ends the process related to the random access. When reception of the message 4 has failed (step S212), the mobile station apparatus 1 deletes the information of the message 3 transmitted in step S207 from the buffer (step S213). Subsequently, the mobile station apparatus 1 increases the counter of the number of times of transmission of the random access channel by 1 (step S214). When the counter of the random access channel transmission count exceeds the maximum transmission count (step S215), the mobile station device 1 determines that there is a problem with the random access operation, and ends the process related to random access. When the number of transmissions does not exceed the maximum number of transmissions (step S215), the mobile station apparatus 1 randomly selects a period (backoff) during which the next preamble is not transmitted from a period between 0 and the maximum backoff period. (Step S216). Next, it progresses to step S202 and it repeats from the selection of the radio | wireless resource of the uplink carrier element which transmits a signature, a preamble, and a random access channel.
　このように、本実施形態によれば、無線通信システムは、基地局装置３がプリアンブルを送信した移動局装置１に割り当てている下りリンクキャリア要素に応じてメッセージ４を送信する下りリンクキャリア要素を切り替え、移動局装置１が基地局装置３に割り当てられた下りリンクキャリア要素に応じてメッセージ４を監視する下りリンクキャリア要素を切り替える。これにより、無線通信システムは、基地局装置３が任意の１つまたは複数の下りリンクキャリア要素でメッセージ４を送信することができ、メッセージ４の配置の自由度が増す。また、基地局装置３が同時に複数の下りリンクキャリア要素で複数のメッセージ４を送信できるため、移動局装置１に複数のメッセージ４を用いて複数の上りリンクキャリア要素と下りリンクキャリア要素の無線リソースを割り当てることができる。 As described above, according to the present embodiment, the radio communication system includes the downlink carrier element that transmits the message 4 according to the downlink carrier element assigned to the mobile station apparatus 1 to which the base station apparatus 3 has transmitted the preamble. Switching, the mobile station apparatus 1 switches the downlink carrier element which monitors the message 4 according to the downlink carrier element allocated to the base station apparatus 3. Thereby, in the radio communication system, the base station apparatus 3 can transmit the message 4 using any one or a plurality of downlink carrier elements, and the degree of freedom of arrangement of the message 4 is increased. In addition, since the base station apparatus 3 can simultaneously transmit a plurality of messages 4 using a plurality of downlink carrier elements, radio resources of a plurality of uplink carrier elements and downlink carrier elements using the plurality of messages 4 to the mobile station apparatus 1 Can be assigned.
　より詳細には、本実施形態の無線通信システムは、移動局装置１が送信したメッセージ３に含めた情報に基づいて、メッセージ４を監視する下りリンクキャリア要素を切り替え、基地局装置３が受信したメッセージ３に含まれる情報に基づいて、メッセージ４を送信する下りリンクキャリア要素を切り替える。これにより、基地局装置３が移動局装置１の接続状態に応じて適切な下りリンクキャリア要素でランダムアクセス処理の成功を示す信号を送信することができる。 More specifically, the radio communication system according to the present embodiment switches the downlink carrier element that monitors the message 4 based on the information included in the message 3 transmitted by the mobile station apparatus 1, and the base station apparatus 3 receives the message. Based on the information included in message 3, the downlink carrier element for transmitting message 4 is switched. Thereby, the base station apparatus 3 can transmit a signal indicating the success of the random access processing with an appropriate downlink carrier element according to the connection state of the mobile station apparatus 1.
　以上のような本発明の特徴的な動作は、コンピュータで制御プログラムを実行することによって行なわれる。すなわち、本発明の基地局装置の制御プログラムは、基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のキャリア要素を使用してランダムアクセス手順を行なう無線通信システムに適用される基地局装置の制御プログラムであって、前記移動局装置が開始したランダムアクセス処理が成功したことを示す信号を、前記移動局装置に割り当てた複数の下りリンクキャリア要素のいずれかで送信する処理を、コンピュータに読み取り可能および実行可能にコマンド化したことを特徴としている。このように、移動局装置が開始したランダムアクセス処理が成功したことを示す信号を、移動局装置に割り当てた複数の下りリンクキャリア要素のいずれかで送信する制御を行なうので、基地局装置が任意の１つ又は複数の下りリンクキャリア要素でメッセージ４を送信することができ、メッセージ４の配置の自由度が増す。また、基地局装置が同時に複数の下りリンクキャリア要素で複数のメッセージ４を送信できるため、移動局装置に複数のメッセージ４を用いて複数の上りリンクキャリア要素と下りリンクキャリア要素の無線リソースを割り当てることができる。 The characteristic operations of the present invention as described above are performed by executing a control program on a computer. That is, the control program for a base station apparatus according to the present invention is a radio communication system in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of carrier elements defined in mutually different frequency bands Is a control program for a base station apparatus applied to the mobile station apparatus, a signal indicating that the random access processing started by the mobile station apparatus is successful, in any of a plurality of downlink carrier elements allocated to the mobile station apparatus It is characterized in that the transmission process is commanded to be readable and executable by a computer. As described above, since the signal indicating that the random access processing started by the mobile station apparatus is successful is transmitted by any one of the plurality of downlink carrier elements allocated to the mobile station apparatus, the base station apparatus can arbitrarily The message 4 can be transmitted by one or a plurality of downlink carrier elements, and the degree of freedom of arrangement of the message 4 is increased. In addition, since the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink carrier elements, radio resources of a plurality of uplink carrier elements and downlink carrier elements are allocated to the mobile station apparatus using a plurality of messages 4 be able to.
　また、本発明の移動局装置の制御プログラムは、基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のキャリア要素を使用してランダムアクセス手順を行なう無線通信システムに適用される移動局装置の制御プログラムであって、前記基地局装置によって割り当てられた複数の下りリンクキャリア要素の信号を受信する処理と、前記基地局装置によって割り当てられた上りリンクのキャリア要素のうち、いずれか一つの上りリンクキャリア要素でランダムアクセス処理を開始する一方、前記複数の下りリンクキャリア要素のいずれかで前記ランダムアクセス処理が成功したことを示す信号を検出した場合、前記ランダムアクセス処理が成功したと認識する処理と、の一連の処理をコンピュータに読み取り可能および実行可能にコマンド化したことを特徴としている。このように、基地局装置によって割り当てられた上りリンクのキャリア要素のうち、いずれか一つの上りリンクキャリア要素でランダムアクセス処理を開始する一方、複数の下りリンクキャリア要素のいずれかでランダムアクセス処理が成功したことを示す信号を検出した場合、ランダムアクセス処理が成功したと認識するので、基地局装置が任意の１つ又は複数の下りリンクキャリア要素でメッセージ４を送信することができ、メッセージ４の配置の自由度が増す。また、基地局装置が同時に複数の下りリンクキャリア要素で複数のメッセージ４を送信できるため、移動局装置に複数のメッセージ４を用いて複数の上りリンクキャリア要素と下りリンクキャリア要素の無線リソースを割り当てることができる。 In addition, the mobile station apparatus control program of the present invention is a radio communication system in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of carrier elements defined in mutually different frequency bands. A mobile station apparatus control program applied to the base station apparatus for receiving a plurality of downlink carrier element signals allocated by the base station apparatus; and an uplink carrier element allocated by the base station apparatus Among them, when the random access process is started with any one of the uplink carrier elements, and the signal indicating that the random access process is successful is detected with any of the plurality of downlink carrier elements, the random access process The computer recognizes the success and the series of processes It is characterized possible and executable in that it has a command of Ri. In this way, among the uplink carrier elements allocated by the base station apparatus, the random access process is started by any one of the uplink carrier elements, while the random access process is performed by any one of the plurality of downlink carrier elements. When a signal indicating success is detected, the base station apparatus recognizes that the random access processing is successful, so that the base station apparatus can transmit the message 4 using any one or a plurality of downlink carrier elements. Increased freedom of placement. In addition, since the base station apparatus can simultaneously transmit a plurality of messages 4 using a plurality of downlink carrier elements, radio resources of a plurality of uplink carrier elements and downlink carrier elements are allocated to the mobile station apparatus using a plurality of messages 4 be able to.
　本発明に関わる基地局装置３、および移動局装置１で動作するプログラムは、本発明に関わる上記実施形態の機能を実現するように、ＣＰＵ（Central Processing Unit）等を制御するプログラム（コンピュータを機能させるプログラム）であっても良い。そして、これら装置で取り扱われる情報は、その処理時に一時的にＲＡＭ（Random Access Memory）に蓄積され、その後、Ｆｌａｓｈ　ＲＯＭ（Read Only Memory)などの各種ＲＯＭやＨＤＤ（Hard Disk Drive）に格納され、必要に応じてＣＰＵによって読み出し、修正・書き込みが行われる。 A program that operates in the base station apparatus 3 and the mobile station apparatus 1 related to the present invention is a program (computer functions as a computer) that controls a CPU (Central Processing Unit) so as to realize the functions of the above-described embodiments related to the present invention. Program). Information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing, and then stored in various ROMs such as Flash ROM (Read Only Memory) and HDD (Hard Disk Drive). Reading, correction, and writing are performed by the CPU as necessary.
　尚、上述した実施形態における移動局装置１、基地局装置３の一部、をコンピュータで実現するようにしても良い。その場合、この制御機能を実現するためのプログラムをコンピュータ読み取り可能な記録媒体に記録して、この記録媒体に記録されたプログラムをコンピュータシステムに読み込ませ、実行することによって実現しても良い。尚、ここでいう「コンピュータシステム」とは、移動局装置１、または基地局装置３に内蔵されたコンピュータシステムであって、ＯＳや周辺機器等のハードウェアを含むものとする。また、「コンピュータ読み取り可能な記録媒体」とは、フレキシブルディスク、光磁気ディスク、ＲＯＭ、ＣＤ－ＲＯＭ等の可搬媒体、コンピュータシステムに内蔵されるハードディスク等の記憶装置のことをいう。さらに「コンピュータ読み取り可能な記録媒体」とは、インターネット等のネットワークや電話回線等の通信回線を介してプログラムを送信する場合の通信線のように、短時間、動的にプログラムを保持するもの、その場合のサーバやクライアントとなるコンピュータシステム内部の揮発性メモリのように、一定時間プログラムを保持しているものも含んでも良い。また上記プログラムは、前述した機能の一部を実現するためのものであっても良く、さらに前述した機能をコンピュータシステムにすでに記録されているプログラムとの組み合わせで実現できるものであっても良い。 In addition, you may make it implement | achieve the mobile station apparatus 1 in the embodiment mentioned above, and a part of base station apparatus 3 with 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 mobile station apparatus 1 or the base station apparatus 3 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 or 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 a program that holds a program for a certain period of time. 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.
　また、上述した実施形態における移動局装置１、基地局装置３の一部、または全部を典型的には集積回路であるＬＳＩとして実現してもよい。移動局装置１、基地局装置３の各機能ブロックは個別にチップ化してもよいし、一部、または全部を集積してチップ化してもよい。また、集積回路化の手法はＬＳＩに限らず専用回路、または汎用プロセッサで実現しても良い。また、半導体技術の進歩によりＬＳＩに代替する集積回路化の技術が出現した場合、当該技術による集積回路を用いることも可能である。 Also, part or all of the mobile station device 1 and the base station device 3 in the above-described embodiment may be realized as an LSI that is typically an integrated circuit. Each functional block of the mobile station device 1 and the base station device 3 may be individually chipped, 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.
　以上、図面を参照してこの発明の一実施形態について詳しく説明してきたが、具体的な構成は上述のものに限られることはなく、この発明の要旨を逸脱しない範囲内において様々な設計変更等をすることが可能である。 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
１、１Ａ－１Ｃ　移動局装置
３　基地局装置
１０１　上位層処理部
１０３　プリアンブル検出部
１０５　同期タイミング測定部
１０７　制御部
１０９　受信処理部
１１１　送信処理部
２０１　上位層処理部
２０３　制御部
２０５　受信処理部
２０７　プリアンブル生成部
２０９　送信処理部
１０１１　無線リソース制御部
１０１２　ランダムアクセス制御部
２０１１　無線リソース制御部
２０１２　ランダムアクセス処理部 1, 1A-1C Mobile station apparatus 3 Base station apparatus 101 Upper layer processing section 103 Preamble detection section 105 Synchronization timing measurement section 107 Control section 109 Reception processing section 111 Transmission processing section 201 Upper layer processing section 203 Control section 205 Reception processing section 207 Preamble generator 209 Transmission processor 1011 Radio resource controller 1012 Random access controller 2011 Radio resource controller 2012 Random access processor

Claims (12)

  1. 　基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のコンポーネントキャリアを使用してランダムアクセス手順を行なう無線通信システムであって、
    　前記基地局装置は、
    　前記移動局装置が開始したランダムアクセス処理が成功したことを示す信号を、前記移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信する制御を行なうランダムアクセス制御部を備え、
    　前記移動局装置は、
    　前記基地局装置によって割り当てられた複数の下りリンクコンポーネントキャリアの信号を受信する受信処理部と、
    　前記基地局装置によって割り当てられた上りリンクのコンポーネントキャリアのうち、いずれか一つの上りリンクコンポーネントキャリアでランダムアクセス処理を開始する一方、前記複数の下りリンクコンポーネントキャリアのいずれかで前記ランダムアクセス処理が成功したことを示す信号を検出した場合、前記ランダムアクセス処理が成功したと認識するランダムアクセス処理部と、を備えることを特徴とする無線通信システム。     A wireless communication system in which a base station device and at least one mobile station device perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands,
    The base station device
    A random access control unit that performs control to transmit a signal indicating that the random access processing started by the mobile station device is successful on any of a plurality of downlink component carriers assigned to the mobile station device;
    The mobile station device
    A reception processing unit that receives signals of a plurality of downlink component carriers allocated by the base station device;
    The random access processing is started on any one of the plurality of downlink component carriers while the random access processing is started on any one of the uplink component carriers allocated by the base station apparatus. And a random access processing unit that recognizes that the random access process is successful when a signal indicating that the random access process is detected is detected.
  2. 　前記ランダムアクセス処理が成功したことを示す信号は、前記基地局装置が前記移動局装置に対して割り当てた前記移動局装置を特定する移動局装置識別子を含む下りリンク制御チャネルであることを特徴とする請求項１記載の無線通信システム。 The signal indicating that the random access processing is successful is a downlink control channel including a mobile station apparatus identifier that identifies the mobile station apparatus allocated to the mobile station apparatus by the base station apparatus. The wireless communication system according to claim 1.
  3. 　前記移動局装置は、前記基地局装置に対して上りリンクコンポーネントキャリアの信号を送信する送信処理部をさらに備え、
    　前記ランダムアクセス制御部は、前記移動局装置から接続の設定を要求する情報を通知された場合は、ランダムアクセス処理が成功したことを示す信号を、前記移動局装置がランダムアクセス処理を開始した上りリンクコンポーネントキャリアに対応する下りリンクコンポーネントキャリアで送信する制御を行なう一方、前記移動局装置から接続の設定を要求する情報とは異なる情報を通知された場合は、ランダムアクセス処理が成功したことを示す信号を、前記移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信する制御を行ない、
    　前記ランダムアクセス処理部は、前記送信処理部が前記基地局装置に接続の設定を要求する情報を通知し、前記ランダムアクセス処理が成功したことを示す信号を、前記ランダムアクセス処理を開始した上りリンクコンポーネントキャリアと対応する下りリンクコンポーネントキャリアで検出した場合は、前記ランダムアクセス処理が成功したと認識する一方、前記送信処理部が前記基地局装置に接続の設定を要求する情報とは異なる情報を通知し、前記ランダムアクセス処理が成功したことを示す信号を、前記基地局装置に割り当てられた前記複数の下りリンクコンポーネントキャリアのいずれかで検出した場合は、前記ランダムアクセス処理が成功したと認識することを特徴とする請求項１または請求項２記載の無線通信システム。     The mobile station apparatus further includes a transmission processing unit that transmits an uplink component carrier signal to the base station apparatus,
    When the random access control unit is notified of information requesting connection setting from the mobile station apparatus, the random access control unit outputs a signal indicating that the random access process has been successful, and the mobile station apparatus has started the random access process. While control is performed using a downlink component carrier corresponding to the link component carrier, if the mobile station apparatus receives information different from the information requesting connection setting, it indicates that the random access processing is successful. Control to transmit a signal on any of a plurality of downlink component carriers assigned to the mobile station device,
    The random access processing unit notifies the base station apparatus of information requesting connection setting, and indicates a signal indicating that the random access processing is successful. When detected by a downlink component carrier corresponding to a component carrier, the transmission processor recognizes that the random access processing is successful, but notifies the base station device of information different from the information requesting connection setting. When the signal indicating that the random access process is successful is detected in any of the plurality of downlink component carriers allocated to the base station apparatus, the random access process is recognized as successful. The wireless communication system according to claim 1, wherein the wireless communication system is a wireless communication system.
  4. 　基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のコンポーネントキャリアを使用してランダムアクセス手順を行なう無線通信システムに適用される基地局装置であって、
    　前記移動局装置が開始したランダムアクセス処理が成功したことを示す信号を、前記移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信する制御を行なうランダムアクセス制御部を備えることを特徴とする基地局装置。     A base station apparatus applied to a radio communication system in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands,
    A random access control unit that performs control to transmit a signal indicating that the random access processing started by the mobile station device is successful is transmitted using any of a plurality of downlink component carriers assigned to the mobile station device. Base station apparatus.
  5. 　前記ランダムアクセス処理が成功したことを示す信号は、前記基地局装置が前記移動局装置に対して割り当てた前記移動局装置を特定する移動局装置識別子を含む下りリンク制御チャネルであることを特徴とする請求項４記載の基地局装置。 The signal indicating that the random access processing is successful is a downlink control channel including a mobile station apparatus identifier that identifies the mobile station apparatus allocated to the mobile station apparatus by the base station apparatus. The base station apparatus according to claim 4.
  6. 　前記ランダムアクセス制御部は、前記移動局装置から接続の設定を要求する情報を通知された場合は、ランダムアクセス処理が成功したことを示す信号を、前記移動局装置がランダムアクセス処理を開始した上りリンクコンポーネントキャリアに対応する下りリンクコンポーネントキャリアで送信する制御を行なう一方、前記移動局装置から接続の設定を要求する情報とは異なる情報を通知された場合は、ランダムアクセス処理が成功したことを示す信号を、前記移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信する制御を行なうことを特徴とする請求項４または請求項５記載の基地局装置。 When the random access control unit is notified of information requesting connection setting from the mobile station apparatus, the random access control unit outputs a signal indicating that the random access process has been successful, and the mobile station apparatus has started the random access process. While control is performed using a downlink component carrier corresponding to the link component carrier, if the mobile station apparatus receives information different from the information requesting connection setting, it indicates that the random access processing is successful. The base station apparatus according to claim 4 or 5, wherein control is performed to transmit a signal on any of a plurality of downlink component carriers assigned to the mobile station apparatus.
  7. 　基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のコンポーネントキャリアを使用してランダムアクセス手順を行なう無線通信システムに適用される移動局装置であって、
    　前記基地局装置によって割り当てられた複数の下りリンクコンポーネントキャリアの信号を受信する受信処理部と、
    　前記基地局装置によって割り当てられた上りリンクのコンポーネントキャリアのうち、いずれか一つの上りリンクコンポーネントキャリアでランダムアクセス処理を開始する一方、前記複数の下りリンクコンポーネントキャリアのいずれかで前記ランダムアクセス処理が成功したことを示す信号を検出した場合、前記ランダムアクセス処理が成功したと認識するランダムアクセス処理部と、を備えることを特徴とする移動局装置。     A base station apparatus and at least one mobile station apparatus are mobile station apparatuses applied to a radio communication system that performs a random access procedure using a plurality of component carriers defined in mutually different frequency bands,
    A reception processing unit that receives signals of a plurality of downlink component carriers allocated by the base station device;
    The random access processing is started on any one of the plurality of downlink component carriers while the random access processing is started on any one of the uplink component carriers allocated by the base station apparatus. And a random access processing unit that recognizes that the random access processing is successful when a signal indicating that the random access processing is detected.
  8. 　前記基地局装置に対して上りリンクコンポーネントキャリアの信号を送信する送信処理部をさらに備え、
    　前記ランダムアクセス処理部は、前記送信処理部が前記基地局装置に接続の設定を要求する情報を通知し、前記ランダムアクセス処理が成功したことを示す信号を、前記ランダムアクセス処理を開始した上りリンクコンポーネントキャリアと対応する下りリンクコンポーネントキャリアで検出した場合は、前記ランダムアクセス処理が成功したと認識する一方、前記送信処理部が前記基地局装置に接続の設定を要求する情報とは異なる情報を通知し、前記ランダムアクセス処理が成功したことを示す信号を、前記基地局装置に割り当てられた前記複数の下りリンクコンポーネントキャリアのいずれかで検出した場合は、前記ランダムアクセス処理が成功したと認識することを特徴とする請求項７記載の移動局装置。     A transmission processing unit that transmits an uplink component carrier signal to the base station device;
    The random access processing unit notifies the base station apparatus of information requesting connection setting, and indicates a signal indicating that the random access processing is successful. When detected by a downlink component carrier corresponding to a component carrier, the transmission processor recognizes that the random access processing is successful, but notifies the base station device of information different from the information requesting connection setting. When the signal indicating that the random access process is successful is detected in any of the plurality of downlink component carriers allocated to the base station apparatus, the random access process is recognized as successful. The mobile station apparatus according to claim 7.
  9. 　基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のコンポーネントキャリアを使用してランダムアクセス手順を行なう無線通信方法であって、
    　前記移動局装置が開始したランダムアクセス処理が成功したことを示す信号を、前記移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信することを特徴とする無線通信方法。     A radio communication method in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands,
    A radio communication method, comprising: transmitting a signal indicating that the random access processing started by the mobile station device has succeeded on any of a plurality of downlink component carriers assigned to the mobile station device.
  10. 　基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のコンポーネントキャリアを使用してランダムアクセス手順を行なう無線通信方法であって、
    　前記基地局装置によって割り当てられた複数の下りリンクコンポーネントキャリアの信号を受信し、
    　前記基地局装置によって割り当てられた上りリンクのコンポーネントキャリアのうち、いずれか一つの上りリンクコンポーネントキャリアでランダムアクセス処理を開始する一方、前記複数の下りリンクコンポーネントキャリアのいずれかで前記ランダムアクセス処理が成功したことを示す信号を検出した場合、前記ランダムアクセス処理が成功したと認識することを特徴とする無線通信方法。     A radio communication method in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands,
    Receiving signals of a plurality of downlink component carriers allocated by the base station apparatus;
    The random access processing is started on any one of the plurality of downlink component carriers while the random access processing is started on any one of the uplink component carriers allocated by the base station apparatus. A wireless communication method comprising recognizing that the random access process has been successful when a signal indicating that the random access process has been detected.
  11. 　基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のコンポーネントキャリアを使用してランダムアクセス手順を行なう無線通信システムに適用される基地局装置の制御プログラムであって、 
    　前記移動局装置が開始したランダムアクセス処理が成功したことを示す信号を、前記移動局装置に割り当てた複数の下りリンクコンポーネントキャリアのいずれかで送信する処理を、コンピュータに読み取り可能および実行可能にコマンド化したことを特徴とする基地局装置の制御プログラム。     A base station apparatus control program applied to a radio communication system in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands. ,
    A process for transmitting a signal indicating that the random access process started by the mobile station apparatus is successful on one of a plurality of downlink component carriers assigned to the mobile station apparatus to a computer readable and executable A control program for a base station apparatus, characterized in that
  12. 　基地局装置と少なくとも一つの移動局装置とが、相互に異なる周波数帯域で定められる複数のコンポーネントキャリアを使用してランダムアクセス手順を行なう無線通信システムに適用される移動局装置の制御プログラムであって、
    　前記基地局装置によって割り当てられた複数の下りリンクコンポーネントキャリアの信号を受信する処理と、
    　前記基地局装置によって割り当てられた上りリンクのコンポーネントキャリアのうち、いずれか一つの上りリンクコンポーネントキャリアでランダムアクセス処理を開始する一方、前記複数の下りリンクコンポーネントキャリアのいずれかで前記ランダムアクセス処理が成功したことを示す信号を検出した場合、前記ランダムアクセス処理が成功したと認識する処理と、の一連の処理をコンピュータに読み取り可能および実行可能にコマンド化したことを特徴とする移動局装置の制御プログラム。     A control program for a mobile station apparatus applied to a radio communication system in which a base station apparatus and at least one mobile station apparatus perform a random access procedure using a plurality of component carriers defined in mutually different frequency bands. ,
    Processing for receiving signals of a plurality of downlink component carriers assigned by the base station device;
    The random access processing is started on any one of the plurality of downlink component carriers while the random access processing is started on any one of the uplink component carriers allocated by the base station apparatus. A control program for a mobile station apparatus, characterized in that a series of processes including a process for recognizing that the random access process is successful when a signal indicating that the random access process has been detected is commanded to be readable and executable by a computer .
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