JP2013042257A - Wireless communication system, base station device, mobile station device, wireless communication method, and integrated circuit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a mobile station device to realize appropriate uplink transmission.SOLUTION: A base station device transmits to a mobile station device a first activation instruction message or a second activation instruction message for a second cell. On receiving the first activation instruction message, the mobile station device starts performing downlink reception and uplink transmission on the second cell instructed in the first activation instruction message. On receiving the second activation instruction message, the mobile station device starts performing only downlink reception on the second cell instructed in the second activation instruction message.

Description

  The present invention relates to a base station apparatus, a mobile station apparatus, and a radio communication system, and more particularly to a radio communication system, a base station apparatus, a mobile station apparatus, a radio communication method, and an integrated circuit in operation during uplink transmission. .

  In the 3rd Generation Partnership Project (3GPP), the W-CDMA system is standardized as a third generation cellular mobile communication system, and services are started sequentially. In addition, HSDPA with higher communication speed has also been standardized and the service has started.

  On the other hand, in 3GPP, standardization of the evolution of third generation radio access (Evolved Universal Terrestrial Radio Access; hereinafter referred to as “EUTRA”) has also been standardized, and the service has started. As an EUTRA downlink communication system, an OFDM (Orthogonal Frequency Division Multiplexing) system that is resistant to multipath interference and suitable for high-speed transmission is adopted. Also, as an uplink communication method, considering the cost and power consumption of the mobile station device, a single carrier frequency division multiplexing SC-FDMA (Peak to Average Power Ratio) PA-PDM (Peak to Average Power Ratio) can be reduced. A single carrier-frequency division multiple access (DFT) Discrete Fourier Transform (spread Fourier transform) -spread OFDM system is adopted.

  In 3GPP, standardization work for Advanced-EUTRA, which is a further evolution of EUTRA, is also being carried out. In Advanced-EUTRA, it is assumed that communication is performed at a maximum transmission rate of 1 Gbps or more and 500 Mbps or more of the uplink using a band up to a maximum of 100 MHz bandwidth in the uplink and the downlink.

  In Advanced-EUTRA, it is considered that a maximum of 100 MHz band is realized by bundling a plurality of bands of 20 MHz or less of EUTRA so that EUTRA mobile station apparatuses can be accommodated. In Advanced-EUTRA, one band of 20 MHz or less of EUTRA is called a component carrier (Component Carrier: CC) (Non-patent Document 2). Further, one cell is configured by combining one downlink component carrier and one uplink component carrier. A single cell can be configured with only one downlink component carrier. The base station apparatus allocates a plurality of cells to the mobile station apparatus and communicates with the mobile station apparatus via the allocated cells.

3GPP TS (Technical Specification) 36.300, V10.3.0 (2011-03), Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN), Overall description Stage2 3GPP TR (Technical Specification) 36.814, V9.0.0 (2010-03), Evolved Universal Terrestrial Radio Access (E-UTRA) Further advancements for E-UTRA physical layer aspects

  When a mobile station apparatus communicates with a base station apparatus using a plurality of cells having different frequencies, a cell having a certain frequency may be connected to the base station apparatus via a repeater or the like. In such a case, the reception timing of data from the downlink component carrier in the mobile station apparatus is different for each cell, and the transmission timing to the base station apparatus is different for each uplink component carrier of each cell. Therefore, the mobile station apparatus needs to adjust transmission timing for each uplink component carrier of each cell and perform uplink transmission to the base station apparatus.

  Further, the mobile station apparatus groups cells having the same transmission timing (hereinafter referred to as a transmission timing group) so that transmission timing can be easily managed, and each transmission is performed with one transmission timing timer. Whether the timing group transmission timing is valid or invalid is determined.

  However, when the mobile station apparatus determines whether the transmission timing of each transmission timing group is valid / invalid using only one transmission timing timer, the transmission timing is already acquired in a cell of a certain transmission timing group. When the transmission timing timer is operating, if a cell in a different transmission timing group that does not acquire transmission timing information is activated, the transmission timing timer operates even though transmission timing information is not acquired. Therefore, uplink transmission such as an uplink reference signal is started. If uplink transmission is performed in a state in which the transmission timing is not suitable, interference is caused with respect to uplink transmission of other mobile station apparatuses, which is adversely affected.

  The present invention has been made in view of such circumstances, and a radio communication system for realizing appropriate uplink transmission for uplink transmission in an uplink component carrier having different transmission timing from a mobile station device, It is an object of the present invention to provide a base station device, a mobile station device, a wireless communication method, and an integrated circuit.

  (1) In order to achieve the above object, the present invention takes the following measures. That is, in the radio communication system of the present invention, when the base station apparatus allocates a plurality of cells to the mobile station apparatus and one transmission timing timer for uplink transmission timing management is operating, the mobile station apparatus A radio communication system that performs uplink transmission to a station apparatus via the plurality of cells, wherein the plurality of cells includes one first cell and one or more second cells, and the base station apparatus When the mobile station apparatus transmits a first activation instruction message or a second activation instruction message for the second cell, and the mobile station apparatus receives the first activation instruction message, the first activation instruction message is transmitted to the mobile station apparatus. Start downlink reception and uplink transmission for the second cell indicated by the activation instruction message of When receiving a Ibeto indication message, it is characterized by initiating only downlink received for the second of the second cell instructed by activated indication message.

  (2) In the wireless communication system of the present invention, when the transmission timing timer expires, the mobile station apparatus stops uplink transmission of the second cell that has started downlink reception and uplink transmission. It is characterized by doing.

  (3) Also, in the wireless communication system of the present invention, the mobile station apparatus is allocated only when the base station apparatus allocates a plurality of cells to the mobile station apparatus and one transmission timing timer for uplink transmission timing management is operating. Is a wireless communication system that performs uplink transmission to the base station device via the plurality of cells, the plurality of cells always including one first cell of an activation cell and one or more of an activation cell or a deactivation cell The first cell and the second cell are composed of a second transmission timing group composed of the second cell having the same uplink transmission timing as the first cell, and the first cell A second transmission timing group composed of the second cells having the same uplink transmission timing different from the uplink transmission timing; The base station apparatus transmits an activation instruction message to the mobile station apparatus to at least one of the second cells, the mobile station apparatus receives the activation instruction message, and receives the activation instruction message. If the transmission timing information of the second transmission timing group to which the second cell instructed to activate belongs is not acquired, an uplink transmission prohibition timer is started for the second transmission timing group. It is a feature.

  (4) Further, the radio communication system of the present invention is characterized in that the mobile station apparatus stops the uplink transmission prohibition timer when acquiring transmission timing information for the second transmission timing group.

  (5) Further, the wireless communication system of the present invention is characterized in that, during the uplink transmission prohibition timer operation, uplink transmission other than the random access preamble is prohibited for the cells of the second transmission timing group. Yes.

  (6) In addition, the wireless communication system of the present invention is characterized in that the uplink transmission prohibition timer is stopped when the transmission timing timer expires and the uplink transmission prohibition timer is operating.

  (7) In addition, in the radio communication system of the present invention, the mobile station apparatus allocates a plurality of cells to the mobile station apparatus, and the mobile station apparatus operates only when one transmission timing timer for uplink transmission timing management is operating. Is a wireless communication system that performs uplink transmission to the base station device via the plurality of cells, the plurality of cells always including one first cell of an activation cell and one or more of an activation cell or a deactivation cell Unlike the transmission timing of the first cell, the first transmission timing group is configured of the second cell, and is configured of the first cell and the second cell having the same uplink transmission timing as the first cell. Grouped in a second transmission timing group composed of the second cells having the same timing, the mobile station device, When receiving an activation instruction message for the cell of the second transmission timing group from the base station apparatus, start downlink reception of the second cell specified by the activation instruction message, After calculating the transmission timing and setting the transmission timing for the cells of the second transmission timing group, uplink transmission of the second cell is started.

  (8) In the wireless communication system of the present invention, after the mobile station apparatus acquires the transmission timing information of the first cell from the base station apparatus, the mobile station apparatus calculates the second timing from the transmission timing and the reception timing of the first cell. Calculating a transmission timing of a transmission timing group, setting a transmission timing for a cell of the first transmission timing group and a cell of the second transmission timing group, and restarting the transmission timing timer, Yes.

  (9) In addition, the base station apparatus of the present invention allocates a plurality of cells to the mobile station apparatus, and is transmitted from the mobile station apparatus when one transmission timing timer for uplink transmission timing management is operating. Base station apparatus for receiving data via the plurality of cells, the plurality of cells being composed of one first cell and one or more second cells, and downlink reception and uplink for the second cell. A first activation instruction message indicating the start of link transmission or a second activation instruction message indicating the start of only downlink reception is transmitted to the mobile station apparatus.

  (10) Also, the mobile station apparatus of the present invention allocates a plurality of cells to the base station apparatus when a plurality of cells are allocated from the base station apparatus and one transmission timing timer for uplink transmission timing management is operating. A mobile station apparatus that performs uplink transmission through a cell, wherein the plurality of cells are composed of one first cell and one or more second cells, from the base station apparatus to the second cell. When receiving the first activation instruction message or the second activation instruction message, and receiving the first activation instruction message, downlink reception is received for the second cell indicated by the first activation instruction message. And when the second activation instruction message is received, the second activation instruction is started. It is characterized by initiating only downlink received for the second cell instructed by the message.

(11) Also, the mobile station apparatus of the present invention assigns the plurality of cells to the base station apparatus only when a plurality of cells are allocated from the base station apparatus and one transmission timing timer for uplink transmission timing management is operating. A mobile station apparatus that performs uplink transmission through a cell,
The plurality of cells, which are always composed of one first cell of the activation cell and one or more second cells of the activation cell or deactivation cell, are composed of the second cell having the same uplink transmission timing as the first cell. The first transmission timing group and the second transmission timing group composed of the second cell having the same uplink transmission timing different from the uplink transmission timing of the first cell, from the base station device The second transmission timing when the activation instruction message is received and the transmission timing information for the second transmission timing group to which the second cell instructed to activate by the activation instruction message belongs has not been acquired. Uplink transmission prohibition timer for group It is characterized in that start.

  (12) Also, the mobile station apparatus of the present invention allocates a plurality of cells to the base station apparatus only when a plurality of cells are allocated from the base station apparatus and one transmission timing timer for uplink transmission timing management is operating. A mobile station apparatus that performs uplink transmission through a cell, and the plurality of cells that are always composed of one first cell of an activation cell and one or more second cells of an activation cell or a deactivation cell, A first transmission timing group configured from the second cell having the same uplink transmission timing as the first cell and the first cell, and from the second cell having the same transmission timing, unlike the transmission timing of the first cell Grouped into a second transmission timing group configured, and from the base station apparatus to the second transmission timing group When the activation instruction message for the message is received, the downlink reception of the second cell specified in the activation instruction message is started, the transmission timing of the second transmission timing group is calculated based on the downlink reception timing, After the transmission timing is set for the cells of the second transmission timing group, uplink transmission of the second cell is started.

  (13) In addition, in the radio communication method of the present invention, when the base station apparatus allocates a plurality of cells to the mobile station apparatus and one transmission timing timer for uplink transmission timing management is operating, the mobile station apparatus Is a radio communication method applied to a radio communication system that performs uplink transmission to the base station apparatus via the plurality of cells, the plurality of cells from one first cell and one or more second cells The base station apparatus transmits a first activation instruction message or a second activation instruction message to the second cell to the mobile station apparatus; and When an activation instruction message is received, downlink reception and uplink are performed for the second cell indicated by the first activation instruction message. And at least a step of starting only downlink reception for the second cell indicated by the second activation instruction message when the second activation instruction message is received. It is characterized by.

  (14) In addition, in the radio communication method of the present invention, only when the base station apparatus allocates a plurality of cells to the mobile station apparatus and one transmission timing timer for uplink transmission timing management is operating, the mobile station apparatus Is a radio communication method applied to a radio communication system that performs uplink transmission to the base station apparatus via the plurality of cells, and the plurality of cells always have one first cell of an activation cell and an activation cell or A first transmission timing group composed of one or more second cells of the activate cell, wherein the first cell and the second cell are composed of the second cell having the same uplink transmission timing as the first cell. And a second transmission composed of the second cell having the same uplink transmission timing different from the uplink transmission timing of the first cell. The base station apparatus transmits an activation instruction message to the mobile station apparatus to at least one of the second cells, and the mobile station apparatus receives the activation instruction message. And if transmission timing information for the transmission timing group to which the second cell instructed to activate by the activation instruction message belongs has not been acquired, an uplink transmission prohibition timer is set for the transmission timing group. It is characterized by including at least a starting step.

  (15) In addition, in the radio communication method of the present invention, only when the base station apparatus allocates a plurality of cells to the mobile station apparatus and one transmission timing timer for uplink transmission timing management is operating, the mobile station apparatus Is a radio communication method applied to a radio communication system that performs uplink transmission to the base station apparatus via the plurality of cells, and the plurality of cells always have one first cell of an activation cell and an activation cell or A first transmission timing group composed of one or more second cells of the activation cell, the first cell and the second cell having the same uplink transmission timing as the first cell, and the first cell Unlike the transmission timing of, the transmission timing is grouped into a second transmission timing group composed of the second cells having the same transmission timing. The mobile station apparatus receives an activation instruction message for the cell of the second transmission timing group from the base station apparatus, and starts downlink reception of the second cell specified by the activation instruction message. Calculating the transmission timing of the second transmission timing group from the transmission timing and downlink reception timing of the first cell, and setting the transmission timing for the cells of the second transmission timing group, It includes at least a step of starting uplink transmission of the second cell.

  (16) In the integrated circuit of the present invention, the plurality of cells are allocated to the base station apparatus when a plurality of cells are allocated from the base station apparatus and one transmission timing timer for uplink transmission timing management is operating. In the integrated circuit applied to the mobile station apparatus that performs uplink transmission via the base station apparatus, the plurality of cells includes one first cell and one or more second cells. Means for receiving the activation instruction message or the second activation instruction message, and when receiving the first activation instruction message, downlink reception is received for the second cell indicated by the first activation instruction message. And means for starting uplink transmission and the second activation instruction message when the second activation instruction message is received. It is characterized in that it comprises means for starting only downlink received for the second cell instructed by Tibeto indication message.

  (17) In the integrated circuit of the present invention, a plurality of cells are allocated to the base station apparatus only when a plurality of cells are allocated from the base station apparatus and one transmission timing timer for uplink transmission timing management is operating. An integrated circuit applied to a mobile station apparatus that performs uplink transmission via a mobile station, wherein the plurality of cells are always one first cell of an activation cell and one or more second cells of an activation cell or a deactivation cell The first cell and the second cell are composed of the first transmission timing group composed of the second cell having the same uplink transmission timing as the first cell, and the uplink transmission of the first cell. Grouped into a second transmission timing group composed of the second cell having the same uplink transmission timing different from the timing , Means for receiving an activation instruction message from the base station apparatus, and transmission timing information for the second transmission timing group to which the second cell instructed to activate by the activation instruction message belongs has not been acquired A means for starting an uplink transmission prohibition timer for the second transmission timing group.

  (18) In the integrated circuit of the present invention, a plurality of cells are allocated to the base station apparatus only when a plurality of cells are allocated from the base station apparatus and one transmission timing timer for uplink transmission timing management is operating. An integrated circuit applied to a mobile station apparatus that performs uplink transmission via a mobile station, wherein the plurality of cells are always one first cell of an activation cell and one or more second cells of an activation cell or a deactivation cell Unlike the transmission timing of the first cell, the transmission timing is the same as the first transmission timing group composed of the first cell and the second cell having the same uplink transmission timing as the first cell. Grouped into a second transmission timing group composed of the second cell, and the second transmission from the base station device Means for receiving an activation instruction message for a cell of the imming group, means for starting downlink reception of the second cell specified by the activation instruction message, and the second transmission timing group based on downlink reception timing And means for starting uplink transmission of the second cell after setting the transmission timing for the cells of the second transmission timing group.

  Advantageous Effects of Invention According to the present invention, in a system that performs uplink transmission at different uplink transmission timings, the mobile station device can perform an appropriate uplink transmission operation even when the transmission timing is managed by one transmission timing timer. Become.

It is a figure which shows the structure of the mobile station apparatus which concerns on embodiment of this invention. It is a figure which shows the structure of the base station apparatus which concerns on embodiment of this invention. It is a figure which shows the structural example of the cell which concerns on embodiment of this invention. It is a figure which shows the example of allocation of the cell which concerns on embodiment of this invention. It is a flowchart which shows the operation example of the mobile station apparatus at the time of activation instruction message reception. It is a flowchart which shows the operation example of the base station apparatus at the time of activation instruction message transmission. It is a flowchart which shows the operation example of the mobile station apparatus at the time of activation instruction message reception. It is a flowchart which shows the operation example of the mobile station apparatus at the time of activation instruction message reception. It is a flowchart which shows the operation example of the mobile station apparatus at the time of transmission timing information reception. It is a figure which shows the channel structure in EUTRA. It is a figure which shows the structure of the uplink in EUTRA. It is a figure which shows a contention based random access procedure. It is a figure which shows a non-contention based random access procedure. It is explanatory drawing about the component carrier of the downlink in Advanced-EUTRA. It is explanatory drawing about the component carrier of the uplink in Advanced-EUTRA. It is a figure which shows the example in which a base station apparatus and a mobile station apparatus communicate via a repeater.

<First Embodiment>
In the downlink of EUTRA, a downlink reference signal (Downlink Reference Signal), a downlink synchronization channel DSCH (Downlink Synchronization Channel), a downlink shared channel PDSCH (Physical Downlink Shared Channel), a downlink control channel PDCCH (Physical Downlink Control Channel) The broadcast channel PBCH (Physical Broadcast Channel).

  In the uplink of EUTRA, an uplink reference signal, a random access channel RACH (Random Access Channel), an uplink shared channel PUSCH (Physical Uplink Shared Channel), and an uplink control channel PUCCH (Physical Uplink Control Channel) It is configured. In addition, the uplink reference signal includes two types of signals, a demodulation reference signal (Demodulation Reference Signal) and a measurement reference signal (Sounding Reference Signal).

  FIG. 10 is a diagram illustrating a channel configuration in EUTRA, and FIG. 11 is a diagram illustrating an uplink configuration in EUTRA. One block is composed of 12 subcarriers and 7 OFDM symbols. Then, one resource block (RB) is configured using two blocks. The uplink shared channel PUSCH and the uplink control channel PUCCH are used in units of one resource block. The random access channel RACH is configured using 6 resource blocks.

  The uplink reference signal is arranged in a specific OFDM symbol in the resource block. Each uplink channel is divided into an uplink shared channel PUSCH region, an uplink control channel PUCCH region, and a random access channel RACH as shown in FIG. Information on each region of the uplink shared channel PUSCH and the uplink control channel PUCCH is broadcast from the base station apparatus 3. Further, the base station apparatus 3 allocates radio resources of the uplink shared channel PUSCH and the uplink control channel PUCCH to each mobile station apparatus individually from each region. The random access channel RACH is arranged at a constant period.

  The downlink shared channel PDSCH is used for transmitting user data and control data from the base station apparatus 3 to the mobile station apparatus 1-1. The downlink control channel PDCCH is used for notification of control information such as radio resource allocation information of the downlink shared channel PDSCH and the uplink shared channel PUSCH from the base station device 3 to the mobile station device 1-1. The downlink reference signal is used to demodulate the downlink shared channel PDSCH and the downlink control channel PDCCH. The downlink synchronization channel DSCH is used for the mobile station apparatus 1-1 to perform downlink synchronization. The broadcast channel PBCH is used to notify information related to the system information of the cell of the base station device 3.

  The uplink shared channel PUSCH is used for transmission of user data and control data from the mobile station apparatus 1-1 to the base station apparatus 3. The data transmitted and received on the uplink shared channel PUSCH and the downlink shared channel PDSCH is subjected to HARQ (Hybrid Automatic Repeat reQuest) processing, and the data at the time of retransmission is performed by combining the initial transmission data and the retransmission data at the time of retransmission. Has improved the error correction ability. The uplink control channel PUCCH is used to notify control information such as a response (ACK (Acknowledge) / NACK (Negative acknowledge)) to downlink data from the base station apparatus 3 and downlink radio channel quality information. Is done.

  The random access channel RACH is mainly used for random access preamble transmission for acquiring transmission timing information from the mobile station apparatus 1-1 to the base station apparatus 3. Random access preamble transmission is performed in a random access procedure. The reference signal for demodulation of the uplink reference signal is used by the base station device 3 to demodulate the uplink shared channel PUSCH, and is inserted into the fourth symbol position and the 11th symbol position of the uplink shared channel PUSCH. . The reference signal for measuring the uplink reference signal is used by the base station apparatus 3 to measure the uplink radio channel quality, and is inserted into the 14th symbol position of the uplink shared channel PUSCH. The radio resource for transmitting the measurement reference signal is allocated from the base station apparatus 3 to each mobile station apparatus.

  The random access procedure includes two access procedures: a contention based random access procedure and a non-contention based random access procedure (Non-Patent Document 1).

  FIG. 12 is a diagram showing a contention based random access procedure. The contention-based random access procedure is a random access procedure that may collide between mobile station devices, and the contention-based random access procedure is not connected (communication) between the base station device 3 and the mobile station device 1-1. This is performed for a scheduling request or the like when uplink data transmission occurs in the mobile station apparatus 1-1 at the initial access from the state or while being connected to the base station apparatus 3 but the uplink synchronization is lost.

  FIG. 13 is a diagram illustrating a non-contention based random access procedure. The non-contention based random access procedure is a random access procedure in which no collision occurs between mobile station devices, and the base station device 3 and the mobile station device 1-1 are connected, but the uplink is out of synchronization. In a special case such as handover or when the transmission timing of the mobile station apparatus 1-1 is not effective in order to quickly establish uplink synchronization between the mobile station apparatus 1-1 and the base station apparatus 3 3 notifies the mobile station apparatus 1-1 of random access instruction information, so that the mobile station apparatus 1-1 starts a random access procedure (Non-Patent Document 1). The non-contention based random access procedure is instructed by an RRC (Radio Resource Control: Layer 3) layer message and control data of the downlink control channel PDCCH.

  The contention based random access procedure will be briefly described with reference to FIG. First, the mobile station apparatus 1-1 transmits a random access preamble to the base station apparatus 3 (message 1: (1), step S1). And the base station apparatus 3 which received random access preamble transmits the response (random access response) with respect to random access preamble to the mobile station apparatus 1-1 (message 2: (2), step S2). The mobile station apparatus 1-1 transmits an upper layer (Layer2 / Layer3) message based on the scheduling information included in the random access response (message 3: (3), step S3). The base station apparatus 3 transmits a collision confirmation message to the mobile station apparatus 1-1 that has received the upper layer message of (3) (message 4: (4), step S4). Note that the random access preamble transmitted by the contention based random access procedure is also referred to as a random preamble.

  The non-contention based random access procedure will be briefly described with reference to FIG. First, the base station apparatus 3 notifies the mobile station apparatus 1-1 of random access instruction information including a preamble number (or sequence number) and a random access channel number to be used (message 0: (1) ′, step S11). The mobile station apparatus 1-1 transmits the random access preamble of the designated preamble number to the designated random access channel RACH (message 1: (2) ', step S12). Then, the base station device 3 that has received the random access preamble transmits a response to the random access preamble (random access response) to the mobile station device 1-1 (message 2: (3) ', step S13). However, when the notified preamble number value is 0, a contention based random access procedure is performed. Note that the random access preamble transmitted by the non-contention based random access procedure is also referred to as a dedicated preamble. The random access preamble is generated using a CAZAC (Constant Amplitude Zero AutoCorrelation) sequence.

  The connection procedure of the mobile station device 1-1 to the base station device 3 will be described with reference to FIG. First, the mobile station apparatus 1-1 acquires the system information of the base station apparatus 3 from the broadcast channel PBCH and the like, executes a contention-based random access procedure from the random access information included in the system information, and the base station apparatus 3 Connect with. The mobile station apparatus 1-1 selects and generates a random access preamble from downlink radio channel quality, the size of the upper layer message to be transmitted, random access information, and the like. And the mobile station apparatus 1-1 determines the random access channel RACH which transmits random access preamble from random access information, and transmits random access preamble (message 1: (1)).

  When the base station device 3 detects the random access preamble from the mobile station device 1-1, the base station device 3 calculates a transmission timing shift amount between the mobile station device 1-1 and the base station device 3 from the random access preamble, and Layer2 In order to transmit (L2) / Layer3 (L3) message, scheduling (designation of uplink radio resource position (position of uplink shared channel PUSCH), transmission format (message size), etc.) is performed, and Temporary C-RNTI (Cell- RA-RNTI indicating a response (random access response) addressed to mobile station apparatus 1-1 that has been assigned Radio Network Temporary Identity (mobile station apparatus identification information) and has transmitted random access preamble of random access channel RACH to downlink control channel PDCCH Random Access-Radio Network Temporary Identity (random access response identification information) is arranged, and the random access response message including transmission timing information, scheduling information, Temporary C-RNTI, and received random access preamble information on the downlink shared channel PDSCH (Message 2: (2)).

  When the mobile station apparatus 1-1 detects the presence of RA-RNTI in the downlink control channel PDCCH, the mobile station apparatus 1-1 confirms the content of the random access response message arranged in the downlink shared channel PDSCH, and transmits the transmitted random access preamble information Is included, the uplink transmission timing is adjusted from the transmission timing information included in the random access response message, and the C-RNTI (or Temporary C-RNTI) or IMSI ( An L2 / L3 message including information for identifying the mobile station apparatus 1-1 such as International Mobile Subscriber Identity is transmitted (message 3: (3)). When the transmission timing is adjusted, the mobile station device 1-1 starts a transmission timing timer in which the adjusted transmission timing is valid.

  When this transmission timing timer expires, the adjusted transmission timing becomes invalid. While the transmission timing is valid (the transmission timing timer is operating), the mobile station apparatus 1-1 can transmit uplink data to the base station apparatus 3, and the transmission timing is invalid (the transmission timing timer is stopped). ), Uplink transmission other than the random access preamble transmission is not performed. In addition, a period in which the transmission timing is valid is referred to as an uplink synchronization state, and a period in which the transmission timing is not valid is also referred to as an uplink asynchronous state.

  When the base station apparatus 3 receives the L2 / L3 message from the mobile station apparatus 1-1, the base station apparatus 3 uses the C-RNTI (or Temporary C-RNTI) or the IMSI included in the received L2 / L3 message. A collision confirmation (contention resolution) message for determining whether or not a collision occurs between 1-1 and 1-3 is transmitted to the mobile station apparatus 1-1 (message 4: (4)). When receiving the collision confirmation message, the mobile station apparatus 1-1 ends the contention based random access procedure.

  The mobile station apparatus 1-1 does not detect the random access response message including the preamble number corresponding to the random access preamble transmitted within a certain period, when the transmission of the message 3 fails, or for a certain period If the identification information of the mobile station apparatus 1-1 is not detected in the collision confirmation message, transmission is repeated from transmission of the random access preamble (message 1: (1)). When the random access preamble transmission count exceeds the random access preamble maximum transmission count indicated by the random access information, the mobile station device 1-1 determines that the random access procedure has failed, and Disconnect communication. In addition, after the random access procedure is successful, control data for connection is further exchanged between the base station apparatus 3 and the mobile station apparatus 1-1. At this time, the base station apparatus 3 notifies the mobile station apparatus 1-1 of the uplink reference signal to be individually allocated and the allocation information of the uplink control channel PUCCH.

  For updating the uplink transmission timing after the random access procedure is completed, the base station apparatus 3 measures an uplink reference signal (a reference signal for measurement or a reference signal for demodulation) transmitted from the mobile station apparatus 1-1. Then, transmission timing information is calculated, and a transmission timing message including the calculated transmission timing information is notified to the mobile station apparatus 1-1. When the mobile station apparatus 1-1 adjusts the uplink transmission timing from the transmission timing information notified from the base station apparatus 3, the mobile station apparatus 1-1 restarts the transmission timing timer. Note that the base station apparatus 3 also holds the same transmission timing timer as that of the mobile station apparatus 1-1, and starts or restarts the transmission timing timer when a transmission timing message is transmitted. In this way, the uplink synchronization state is managed by the base station apparatus 3 and the mobile station apparatus 1-1. When the transmission timing timer expires, the transmission timing becomes invalid, and uplink transmission other than the random access preamble transmission is stopped.

  Also, 3GPP has begun discussions on Advanced-EUTRA, a further evolution of EUTRA. In Advanced-EUTRA, it is assumed that communication is performed at a maximum transmission rate of 1 Gbps or more and 500 Mbps or more of the uplink using a band up to a maximum of 100 MHz bandwidth in the uplink and the downlink.

  FIG. 14 is an explanatory diagram of downlink component carriers in Advanced-EUTRA. FIG. 15 is an explanatory diagram of an uplink component carrier in Advanced-EUTRA.

  In Advanced-EUTRA, it is considered that a maximum of 100 MHz band is realized by bundling a plurality of bands of 20 MHz or less of EUTRA so that the mobile station apparatus 1-1 of EUTRA can be accommodated. In Advanced-EUTRA, one band of 20 MHz or less of EUTRA is called a component carrier (Component Carrier: CC) (Non-patent Document 2). Further, one cell is configured by combining one downlink component carrier and one uplink component carrier. A single cell can be configured with only one downlink component carrier.

  That is, the base station apparatus 3 allocates a plurality of cells that match the communication capability and communication conditions of the mobile station apparatus 1-1, and communicates with the mobile station apparatus 1-1 via the allocated cells. Yes. In the plurality of cells assigned to the mobile station apparatus 1-1, one cell is a first cell (Primary Cell) and the other cells are second cells (Secondary Cell). Special functions not provided in the second cell, such as assignment of the uplink control channel PUCCH and access permission for the random access channel RACH, are set in the first cell.

  Also, in order to reduce the power consumption of the mobile station apparatus 1-1, the mobile station apparatus 1-1 does not perform downlink reception processing on the second cell immediately after allocation (or in the downlink control channel). The base station apparatus 3 is instructed to activate (Activate) and then starts downlink reception processing for the second cell instructed to activate (or downlink). According to the radio resource allocation information indicated by the link control channel). In addition, after the mobile station apparatus 1-1 is instructed to deactivate the second cell activated by the base station apparatus 3, the mobile station apparatus 1-1 is downlinked to the second cell instructed to deactivate. Is stopped (or does not follow the radio resource allocation information instructed by the downlink control channel). The second cell that is instructed to be activated by the base station device 3 and is performing downlink reception processing is called an activated cell, and the second cell immediately after allocation from the base station device 3 to the mobile station device 1-1. A second cell that has been instructed to deactivate a cell and has stopped downlink reception processing is called a deactivation cell. The first cell is always an activated cell.

  However, when the mobile station apparatus 1-1 communicates with the base station apparatus 3 using a plurality of cells, the mobile station apparatus 1-1 may be connected to the base station apparatus 3 via a repeater as shown in FIG. . In such a case, both or one of the reception timing of the downlink component carrier in the mobile station apparatus 1-1 and the transmission timing to the base station apparatus 3 for each uplink component carrier is different for each cell. In particular, when the transmission timing to the base station apparatus 3 for each uplink component carrier is different, the mobile station apparatus 1-1 adjusts the transmission timing for each uplink component carrier of each cell, It is necessary to perform uplink transmission.

[Configuration description]
FIG. 1 is a diagram showing a configuration of a mobile station apparatus 1-1 according to the embodiment of the present invention. The mobile station apparatuses 1-1 to 1-3 include a radio unit 101, a transmission processing unit 103, a modulation unit 105, a transmission HARQ processing unit 107, a control unit 109, an uplink reference signal generation unit 111, a random access preamble generation unit 113, The reception processing unit 115, the demodulation unit 117, the reception HARQ processing unit 119, and the mobile station management unit 121 are configured. The mobile station management unit 121 includes an UL schedule unit 123, a control data creation unit 125, a control data analysis unit 127, a cell management unit 129, and a TA management unit 131. Note that the radio unit 101, the transmission processing unit 103, the modulation unit 105, the transmission HARQ processing unit 107, the reception processing unit 115, the demodulation unit 117, and the reception HARQ processing unit 119 communicate in consideration of communication with a plurality of cells. It is assumed that the number of cells is the same as the number of cells to be processed.

  User data and control data are input to the transmission HARQ processing unit 107. The transmission HARQ processing unit 107 encodes input data according to an instruction from the control unit 109, and performs puncture processing on the encoded data. Then, transmission HARQ processing section 107 outputs the punctured data to modulation section 105 and stores the encoded data. Further, when the transmission HARQ processing unit 107 is instructed to retransmit the data by the control unit 109, the transmission HARQ processing unit 107 performs puncture processing different from the puncture performed on the previously stored encoded data, and modulates the punctured data. To 105. In addition, the transmission HARQ processing unit 107 deletes the stored data according to an instruction from the control unit 109.

  Modulation section 105 modulates input data from transmission HARQ processing section 107 and outputs the result to transmission processing section 103. The transmission processing unit 103 receives input data (or input signals) from the modulation unit 105, the uplink reference signal generation unit 111, and the random access preamble generation unit 113 according to instructions from the control unit 109, for each uplink component carrier of each cell. The data is mapped to a channel, and the mapped data is subjected to OFDM signal processing such as serial / parallel conversion, DFT-IFFT (Inverse Fast Fourier Transform) conversion, and CP insertion to generate an OFDM signal. Further, the transmission processing unit 103 adjusts the transmission timing of the signal output for each uplink component carrier of each cell from the transmission timing information passed from the control unit 109 and the transmission timing group information for adjusting the transmission timing, and the transmission timing After the adjustment, the OFDM signal is output to the wireless unit 101.

  The uplink reference signal generation unit 111 generates an uplink reference signal from the uplink reference signal generation information acquired from the mobile station management unit 121 according to an instruction from the control unit 109, and transmits the generated uplink reference signal to the transmission processing unit 103. Output to. When only the preamble number is notified from the control unit 109, the random access preamble generation unit 113 generates a random access preamble of the notified preamble number from the set random access information, and transmits the random access preamble from the random access information The position of the random access channel RACH to be selected is selected, and the generated random access preamble and the selected random access channel RACH position are output to the transmission processing unit 103. In addition, when the preamble number and the random access channel RACH position are notified from the control unit 109, the random access preamble generation unit 113 generates a random access preamble of the preamble number notified from the random access information, and generates the generated random access preamble. The random access channel RACH position notified of is output to the transmission processing unit 103.

  The radio unit 101 up-converts the input signal from the transmission processing unit 103 to a radio frequency according to an instruction from the control unit 109, and transmits the radio signal from the transmission antenna. Radio section 101 down-converts the radio signal received from the antenna and outputs it to reception processing signal section 115. The reception processing unit 115 performs FFT (Fast Fourier Transform) processing on the input signal from the radio unit 101 and outputs the signal to the demodulation unit 117. The demodulator 117 demodulates the input data and outputs the demodulated data to the reception HARQ processor 119.

  The reception HARQ processing unit 119 performs a decoding process on the input data. If the decoding process is successful, the reception HARQ processing unit 119 outputs control data to the mobile station management unit 121 and outputs user data to an upper layer. The reception HARQ processing unit 119 stores the data that has failed in the decoding process when the decoding process of the input data has failed. When receiving the retransmission data, the reception HARQ processing unit 119 combines the stored data and the retransmission data and performs a decoding process. Also, the reception HARQ processing unit 119 notifies the mobile station management unit 121 of success or failure of input data decoding processing. Further, the reception HARQ processing unit 119 deletes the stored data in accordance with an instruction from the control unit 109.

  Based on instructions from the mobile station management unit 121, the control unit 109 is configured to include a radio unit 101, a transmission processing unit 103, a modulation unit 105, a transmission HARQ processing unit 107, an uplink reference signal generation unit 111, and a random access preamble generation unit 113. The reception processing unit 115, the demodulation unit 117, and the reception HARQ processing unit 119 are controlled. Further, the control unit 109, based on an instruction from the mobile station management unit 121, the radio unit 101 corresponding to the second cell, the transmission processing unit 103, the modulation unit 105, the transmission HARQ processing unit 107, the reception processing unit 115, the demodulation The unit 117 and the reception HARQ processing unit 119 are instructed to start and stop the operation.

  The mobile station management unit 121 includes an UL schedule unit 123, a control data creation unit 125, a control data analysis unit 127, a cell management unit 129, and a TA management unit 131. The control data creation unit 125 creates an ACK / NACK message of data from the decoding result of the received data from the reception HARQ processing unit 119, and creates control data such as a message indicating downlink radio quality. The control data is output to the transmission HARQ processing unit 107. The control data analysis unit 127 analyzes the control data input from the reception HARQ processing unit 119.

  The control data analysis unit 127 receives cell system information (or cell setting information), cell allocation information, random access instruction information, a random access response message, a contention resolution message, an uplink received from the base station apparatus 3. The link reference signal generation information, the activation instruction 1 message, the activation instruction 2 message, and the deactivation instruction message are output to the cell management unit 129, and the transmission timing message and transmission timing timer information are output to the TA management unit 131.

  The UL scheduling unit 123 is configured to transmit the uplink data scheduling information from the base station apparatus 3 and the transmitted uplink data response (ACK / NACK) via the control unit 109, the transmission processing unit 103, the modulation unit 105, The transmission HARQ processing unit 107 is controlled. Further, it instructs the cell management unit 129 to start the random access procedure based on the control information from the upper layer.

  The cell management unit 129 manages the cells allocated from the base station apparatus 3, and system information or configuration information (configuration of physical channel, transmission power information, random access information, and the like) for each cell received from the base station apparatus 3. Each cell system information such as uplink reference signal generation information, radio resources for uplink reference signals (measurement reference signals), radio resources for uplink control channel PUCCH, etc. are individually assigned to mobile station apparatus 1-1. Managed radio resources). The cell management unit 129 notifies the random access information to the random access preamble generation unit 113 via the control unit 109 and notifies the uplink reference signal generation unit 111 of the generation information of the uplink reference signal.

  The cell management unit 129 notifies the TA management unit 131 of group information of cells having the same transmission timing. The cell management unit 129 starts a contention-based random access procedure when starting communication or when making a schedule request for uplink data, selects a random preamble from random access information, and controls the preamble number of the selected random preamble. The random access preamble generation unit 113 is notified through 109. When the cell management unit 129 acquires the random access instruction information, the cell management unit 129 starts a non-contention based random access procedure, and transmits the preamble number and the random access channel number included in the random access instruction information via the control unit 109. The random access preamble generation unit 113 is notified.

  When the cell management unit 129 acquires the random access response message, the cell management unit 129 outputs the transmission timing information included in the random access response message to the TA management unit 131, and outputs the information of the L2 / L3 message to the control data creation unit 125. If the non-contention based random access procedure is being executed, the non-contention based random access procedure is terminated. When acquiring the contention resolution message, the cell management unit 129 ends the contention-based random access procedure.

  When the cell management unit 129 acquires the activation instruction 1 message, the cell management unit 129 receives, with respect to the cell indicated by the activation instruction 1 message, the reception processing unit 115, the demodulation unit 117, the reception HARQ processing unit 119, the radio unit 101, the transmission processing unit 103, the modulation Unit 105, transmission HARQ processing unit 107, and uplink reference signal generation unit 111 are instructed to start operation via control unit 109. When the cell management unit 129 acquires the activation instruction 2 message, the cell management unit 129 instructs the reception processing unit 115, the demodulation unit 117, the reception HARQ processing unit 119, and the radio unit 101 to start the operation for the cell indicated by the activation instruction 2 message. Direct through. When the cell management unit 129 acquires the deactivation instruction message, the cell processing unit 129 receives, with respect to the cell indicated by the deactivation instruction message, the reception processing unit 115, the demodulation unit 117, the reception HARQ processing unit 119, the radio unit 101, the transmission processing unit 103, the modulation Unit 105, transmission HARQ processing unit 107, and uplink reference signal generation unit 111 are instructed to stop operation via control unit 109.

  The TA management unit 131 manages the transmission timing and the transmission timing timer for each cell or each transmission timing group. Further, the TA management unit 131 also manages group information of cells having the same transmission timing. When the TA management unit 131 acquires the transmission timing message, the TA management unit 131 notifies the transmission processing unit 103 via the control unit 109 of transmission timing group information and transmission timing information to which the transmission timing included in the transmission timing message is applied. When acquiring the transmission timing information of the first cell, the TA management unit 131 starts or restarts the transmission timing timer.

  FIG. 2 shows a configuration diagram of the base station apparatus 3 according to the embodiment of the present invention. The base station apparatus 3 includes a radio unit 201, a transmission processing unit 203, a modulation unit 205, a transmission HARQ processing unit 207, a control unit 209, a downlink reference signal generation unit 211, a preamble detection unit 213, a reception processing unit 215, and a demodulation unit 217. A reception HARQ processing unit 219 and a base station management unit 221. The base station management unit 221 includes a DL / UL schedule unit 223, a control data creation unit 225, a control data analysis unit 227, a cell management unit 229, and a TA management unit 231.

  User data and control data are input to the transmission HARQ processing unit 207. The transmission HARQ processing unit 207 encodes input data according to an instruction from the control unit 209 and performs puncture processing on the encoded data. Then, the transmission HARQ processing unit 207 outputs the punctured data to the modulation unit 205, and stores the encoded data. Transmission HARQ processing section 207, when instructed to retransmit data by control section 209, acquires stored encoded data, performs puncture processing different from the previous puncture, and modulates the punctured data The data is output to the unit 205. The transmission HARQ processing unit 207 deletes the stored data in accordance with an instruction from the control unit 209.

  Modulation section 205 modulates input data from transmission HARQ processing section 207 and outputs the result to transmission processing section 203. The transmission processing unit 203 receives the input data (or signal) from the modulation unit 205 or the downlink reference signal generation unit 211 according to an instruction from the control unit 209, the downlink control channel PDCCH of the downlink component carrier of each cell, and downlink synchronization. OFDM signals such as channel DSCH, broadcast channel PBCH, downlink shared channel PDSCH, etc., and mapped data are serial / parallel converted, IFFT (Inverse Fast Fourier Transform) converted, CP insertion, etc. Processing is performed to generate an OFDM signal. Then, the transmission processing unit 203 outputs the generated OFDM signal to the wireless unit 201.

  Radio section 201 up-converts the input signal from transmission processing section 203 to a radio frequency according to an instruction from control section 209, and transmits the radio signal to mobile station apparatuses 1-1 to 1-3 from the transmission antenna. The radio unit 201 receives a radio signal from the mobile station device 1-1 from the antenna, down-converts the received signal into a baseband signal, and converts the received signal to the reception processing unit 215 or the preamble detection unit 213. Output. The reception processing unit 215 performs FFT (Fast Fourier Transform) processing on the input signal from the radio unit 201 and outputs the result to the demodulation unit 217. Further, the reception processing unit 215 measures the radio channel quality and the amount of transmission timing deviation from the uplink reference signal (measurement reference signal), and passes the measurement result to the base station management unit 221. The uplink communication scheme is assumed to be a single carrier scheme such as DFT-spread OFDM, but may be a multicarrier scheme such as the OFDM scheme. The demodulator 217 demodulates input data and outputs the demodulated data to the reception HARQ processor 219.

  The reception HARQ processing unit 219 performs a decoding process on the input data, and when the decoding process is successful, outputs the control data to the base station management unit 221 and outputs the user data to the upper layer. The reception HARQ processing unit 219 stores the data that has failed in the decoding process when the decoding process of the input data has failed. When receiving the retransmission data, the reception HARQ processing unit 219 combines the stored data and the retransmission data and performs a decoding process. Also, the reception HARQ processing unit 219 notifies the base station management unit 221 of the success or failure of the input data decoding process. Further, the reception HARQ processing unit 219 deletes the stored data in accordance with an instruction from the control unit 209.

  The preamble detection unit 213 performs a correlation process on the input signal from the radio unit 201 and performs a random access preamble detection process. When a random access preamble is detected, a transmission timing shift amount is calculated from the detected random access preamble, and the base station management unit 221 is notified of information on the detected preamble, information on the detected preamble, and the transmission timing shift amount. Based on an instruction from the base station management unit 221, the control unit 209 performs a radio unit 201, a transmission processing unit 203, a modulation unit 205, a transmission HARQ processing unit 207, a downlink reference signal generation unit 211, a reception processing unit 215, a demodulation The control unit 217 and the reception HARQ processing unit 219 are controlled.

  The base station management unit 221 includes a DL / UL schedule unit 223 that performs downlink and uplink schedules, a control data creation unit 225, a control data analysis unit 227, a cell management unit 229, and a TA management unit 231. The DL / UL schedule unit 223 controls the downlink radio propagation path quality information notified from the mobile station apparatus 1-1 and the data information of each user notified from the higher layer and the control data generation unit 225. A schedule for mapping user data and control data from the data to each downlink channel is performed, and the schedule result is output to the control unit 209.

  Also, the DL / UL schedule unit 223 maps user data to each uplink channel from the uplink radio channel quality result from the reception processing unit 215 and the radio resource allocation request from the mobile station apparatus 1-1. Schedule. The DL / UL schedule unit 223 instructs the cell management unit 229 to activate the second cell when the amount of data transmitted on the downlink or uplink increases. When the amount of data transmitted on the downlink or uplink decreases, the cell management unit 229 is instructed to deactivate the activated second cell.

  Also, when notified from the preamble detector 213 that the random access preamble has been detected, the DL / UL schedule unit 223 allocates the uplink shared channel PUSCH, and assigns the allocated uplink shared channel PUSCH and preamble number to the control data. The creation unit 225 is notified. When notified from the TA management unit 231 of the transmission timing information and transmission timing group information to which the transmission timing is applied, the DL / UL schedule unit 223 reports that the transmission timing information is transmitted to the TA management unit 231 and transmits the transmission timing. The control data generation unit 225 is notified of transmission timing group information to which the information and transmission timing are applied. Also, the DL / UL scheduling unit 223 is a cell management unit configured to cause the mobile station apparatus to perform a random access procedure when downlink user data is generated for a mobile station apparatus whose uplink is out of synchronization. 229 is instructed.

  The control data creation unit 225 creates control data arranged on the downlink control channel PDCCH and control data arranged on the downlink shared channel PDSCH. Control message including schedule information, uplink data response (ACK / NACK), system information message including physical channel configuration information, transmission power information of each channel, random access information, etc., setting information of cells to be used (random Initial setting message including access information), random access response message including preamble number, transmission timing information and scheduling information, contention resolution message, random access instruction including preamble number and random access channel RACH number Control data such as information, transmission timing message including transmission timing information, activation instruction 1 message, activation instruction 2 message, deactivation instruction message It is formed. The control data analysis unit 229 controls the transmission HARQ processing unit 207 via the control unit 209 according to the downlink data response (ACK / NACK) result from the mobile station apparatus 1-1.

  The cell management unit 229 manages each cell and system information of each cell (physical channel configuration information, transmission power information of each channel, random access information, cell timing information of transmission timing, etc.). In addition, the cell management unit 229 allocates one or more cells to the mobile station apparatuses 1-1 to 1-3, and the radio resources of the uplink reference signal (measurement reference signal) and the uplink control channel PUCCH Allocate radio resources. Then, the cell management unit 229 notifies the control data creation unit 225 of cell allocation information, cell system information (cell setting information), and mobile station apparatuses 1-1 to 1-3 so as to notify information related to the allocated cells. Outputs radio resource information assigned to

  The cell management unit 229 determines an activation or deactivation cell according to an instruction from the DL / UL schedule unit 223, and notifies the control data analysis unit 127 of information on the activation or deactivation cell.

  When the cell management unit 229 receives an instruction from the DL / UL scheduling unit 223 to cause the mobile station apparatus to execute a random access procedure, the cell management unit 229 selects a preamble number and a random access channel RACH number from the random access information of the cell, and creates control data Notification to the unit 225.

  The TA management unit 231 manages the transmission timing and transmission timing timer for each cell of the mobile station apparatuses 1-1 to 1-3. Further, the TA management unit 231 also manages cell related information that has the same transmission timing. When the TA management unit 231 acquires a transmission timing shift amount from the preamble detection unit 213 or the reception processing unit 215, the TA management unit 231 creates transmission timing group information to which the transmission timing information and the transmission timing are applied, and transmits the transmission timing group information to the DL / UL scheduling unit 223. The transmission timing information and the transmission timing group information to which the transmission timing is applied are notified. When notified of transmission of transmission timing information of the first cell from the DL / UL scheduling unit 223, the TA management unit 231 starts or restarts the transmission timing timer.

<Description of operation>
Radio communication in which the base station apparatus 3 described with reference to FIGS. 14 and 15 allocates a plurality of cells to the mobile station apparatus 1-1, and the base station apparatus 3 and the mobile station apparatus 1-1 communicate with each other through the allocated cells. Assume a system. In addition, a wireless communication system is assumed in which communication is performed via a plurality of cells having different transmission timings from the mobile station apparatus 1-1 described in FIG.

  In Advanced-EUTRA, the base station apparatus 3 assigns, for each frequency, one or more cells having different frequencies that meet the communication capability and communication conditions of the mobile station apparatus 1-1 from among a plurality of cells. And the mobile station apparatus 1-1 transmits / receives data with the base station apparatus 3 via the allocated cell. When the mobile station apparatus 1-1 communicates with the base station apparatus 3 using a plurality of cells, the mobile station apparatus 1-1 may be connected to the base station apparatus 3 via a repeater as shown in FIG. In such a case, the reception timing of data from the downlink component carrier in the mobile station apparatus 1-1 may be different for each cell. Furthermore, the transmission timing to the base station apparatus 3 may be different for each uplink component carrier of each cell. When the transmission timing to the base station apparatus 3 is different for each uplink component carrier, the mobile station apparatus 1-1 needs to adjust the transmission timing for each uplink component carrier of each cell.

  Further, cells having the same transmission timing are grouped (hereinafter referred to as a transmission timing group) so that transmission timing can be easily managed. One transmission timing timer determines whether the transmission timing of each transmission timing group is valid / invalid.

  However, if only one transmission timing timer is used to determine the validity / invalidity of the transmission timing of each transmission timing group, the transmission timing is already acquired in a cell of a certain transmission timing group. When operating, when a cell in a different transmission timing group that has not acquired transmission timing information is activated, the transmission timing timer is operating even though transmission timing information is not acquired, so the uplink reference Signals and other uplink transmissions start in the activated cell. If uplink transmission is performed in a state where the mobile station apparatus 1-1 has not acquired the transmission timing, it interferes with the uplink transmission of other mobile station apparatuses and has an adverse effect. Therefore, it is necessary to prohibit uplink transmission for the cells of the transmission timing group that have not acquired the transmission timing information even when the transmission timing timer is operating.

  In addition, uplink transmission, user data transmission of the uplink shared channel PUSCH, control data transmission to the uplink control channel PUCCH, and transmission of uplink reference signals (demodulation reference signal and measurement reference signal), or transmission processing Random access preamble transmission to the random access channel RACH is not included.

  The base station device 3 activates the activation instruction indicating the start of downlink reception and the start of uplink transmission (hereinafter referred to as the activation instruction 1), and the activation instruction indicating the start of downlink reception and prohibition of uplink transmission (hereinafter referred to as the activation instruction 1). Is divided into two types of activation instructions (referred to as activation instruction 2), and the base station apparatus 3 looks at the transmission timing state of each cell of the mobile station apparatus 1-1, and activates instruction 1 or activation instruction 2 By notifying the mobile station apparatus 1-1 of one of the activation instructions, the mobile station apparatus 1-1 is prevented from transmitting to a cell whose transmission timing is not valid. When receiving the activation instruction 2 (activation instruction indicating the start of downlink reception and prohibition of uplink transmission), the mobile station apparatus 1-1 does not perform uplink transmission regardless of whether the transmission timing is valid or invalid. To do. By doing in this way, the mobile station apparatus 1-1 does not perform uplink transmission even if a cell whose transmission timing is not valid is activated while the transmission timing timer is operating.

Operations of the mobile station apparatus 1-1 and the base station apparatus 3 will be described.
The base station apparatus 3 groups the cells having the same transmission timing from the mobile station apparatus 1-1 (hereinafter referred to as a transmission timing group). Then, the base station apparatus 3 sets one cell as the first cell and sets the other cells as the second cell.

  The first cell has a periodic radio resource for notifying the telephone and real-time information, an uplink control channel PUCCH for use in response to the downlink shared channel PDSCH, downlink radio channel quality information, etc. An important function such as assigning an uplink control channel PUCCH for notifying control information of is set. For this reason, a cell having a good communication environment such as a good radio propagation path state is set as the first cell.

  In addition, the transmission timing group includes a first transmission timing group composed of a first cell and a second cell having the same uplink transmission timing as the first cell, and the same uplink different from the uplink transmission timing of the first cell. It is classified into a second transmission timing group composed of second cells of link transmission timing. The first transmission timing group includes at least a first cell, and the second transmission timing group includes at least one second cell.

  As an example, the base station apparatus 3 includes cells 1 to 5 as shown in FIG. 3, and each of the cells 1 to 3 is a transmission timing group (transmission timing group 1) having the same transmission timing. The cell 5 has the same transmission timing and is a transmission timing group (transmission timing group 2) different from the transmission timing group 1.

  The mobile station apparatus 1-1 performs a cell search and finds one cell of the base station apparatus 3. Here, assume that cell 1 is found. The mobile station apparatus 1-1 receives the broadcast channel PBCH of the cell 1, and acquires system information of the cell 1 (cell physical channel configuration, transmission power information, random access information, etc.). Then, the mobile station apparatus 1-1 selects and generates a random access preamble using random access information included in the system information for initial access, and selects a random access channel RACH for transmitting the random access preamble. Then, a random access preamble (message 1) is transmitted to the random access channel RACH of the selected cell 1.

  And the mobile station apparatus 1-1 acquires the random access response message (message 2) containing the transmission timing information with respect to the cell 1 from the base station apparatus 3, and the uplink with respect to the cell 1 from the transmission timing information contained in the random access response. The transmission timing of the link component carrier is adjusted, and the transmission timing timer is started. The mobile station apparatus 1-1 transmits an L2 / L3 message (message 3) to the base station apparatus 3 via the cell 1. The mobile station apparatus 1-1 transmits the message 3 including the content indicating the initial access in the message 3. And the mobile station apparatus 1-1 will complete | finish a contention based random access procedure, if contention resolution (message 4) is received from the base station apparatus 3. FIG.

  After the random access procedure is completed, the base station apparatus 3 allocates a cell to be used by the mobile station apparatus 1-1 and notifies the mobile station apparatus 1-1 of allocation information. Here, as shown in FIG. 4, the base station apparatus 3 assigns cells 1 to 5 to the mobile station apparatus 1-1, and sets cell 1 as the first cell and cells 2 to 5 as the second cell. Then, the cells 1 to 3 are set to a transmission timing group (transmission timing group 1) having the same transmission timing, and the cells 4 and 5 are set to a transmission timing group (transmission timing group 2) having the same transmission timing. A random access procedure is set (permitted) for the cell 5 of the transmission timing group 2.

  And the base station apparatus 3 sets the setting information (system information of each cell) of the cells (cell 1 to cell 5) allocated to the mobile station apparatus 1-1, group information of the transmission timing group, and uplink control of the first cell. Channel PUCCH allocation information, uplink reference signal (measurement reference signal) generation information, radio resource allocation information for transmitting an uplink reference signal (measurement reference signal), and periodic uplink shared channel PDSCH radio The mobile station apparatus 1-1 is also notified of setting information for each mobile station apparatus such as resource allocation information. In addition, the base station apparatus 3 notifies the cell setting information including random access information as information on a cell for which a random access procedure is permitted. Here, since the base station apparatus 3 has set the cell 1 as the first cell, the base station apparatus 3 notifies the cell 1 and the cell 5 of the random access information. The mobile station apparatus 1-1 recognizes the random access procedure for the cell from which the random access information has been acquired based on the set parameters.

  After notifying the above information, the base station device 3 instructs the mobile station device 1-1 to activate instruction 1 (activation instruction 1 message) for the cells 2 and 3, and activates the cells 4 and 5 to activate. 2 (Activate instruction 2 message) is instructed. The mobile station apparatus 1-1 instructed to activate 1 starts downlink reception for the cell 2 and the cell 3, and the cell in the same transmission timing group as the cell 1 from the acquired transmission timing information of the cell 1 2 and the uplink transmission timing of the cell 3 are adjusted, and uplink transmission to the cell 2 and the cell 3 is started. The mobile station apparatus 1-1 instructed to activate 2 starts downlink reception for the cells 4 and 5, but does not start transmission timing adjustment and uplink transmission.

  In addition, uplink transmission means transmission of uplink shared channel PUSCH other than random access preamble transmission, transmission of uplink control channel PUCCH, transmission of an uplink reference signal, or transmission processing. Moreover, the activation instruction message transmitted by the base station apparatus 3 may be notified in units of cells, or the activation instruction messages of the allocated cells may be notified collectively. Thereafter, data is exchanged between the mobile station apparatus 1-1 and the base station apparatus 3 via the downlink component carriers of the cells 1 to 5 and the uplink component carriers of the cells 1 to 3.

  When the amount of transmission data from the mobile station apparatus 1-1 increases and there is a cell that is not used by the mobile station apparatus 1-1, the base station apparatus 3 sends a non-contention based random access procedure to the mobile station apparatus 1-1. Random access instruction information for instructing to perform is notified by the downlink control channel PDCCH. Here, it is assumed that the base station apparatus 3 notifies the mobile station apparatus 1-1 of random access instruction information for the cell 5. The random access instruction information includes a preamble number and a random access channel number, and the mobile station apparatus 1-1 includes the preamble number specified by the base station apparatus 3 and the setting information of the cell 5 that it holds. A random access preamble is generated from the random access information, a random access channel RACH for transmitting the random access preamble is selected, and the random access preamble is transmitted to the random access channel RACH of the cell 5.

  When the base station apparatus 3 detects the random access preamble, the base station apparatus 3 calculates a transmission timing shift amount from the random access preamble, and the mobile station apparatus 1-1 includes the random timing including the transmission timing information via the downlink component carrier of the cell 5. Notify access response. When receiving the random access response, the mobile station apparatus 1-1 adjusts the transmission timing information included in the random access response as the uplink transmission timing of the cell 5, and further sets the transmission timing information to the same transmission timing group. The uplink transmission timing of cell 4 is adjusted. And the mobile station apparatus 1-1 complete | finishes a non-contention based random access procedure. After the random access procedure is completed, the base station device 3 notifies the mobile station device 1-1 of the activation instruction 1 message for the cell 4 and the cell 5. After receiving the activate instruction 1 message, the mobile station apparatus 1-1 starts uplink transmission to the cell 4 and the cell 5. Thereafter, data is exchanged between the mobile station apparatus 1-1 and the base station apparatus 3 including the uplink component carriers of the cells 4 and 5.

  When the mobile station apparatus 1-1 acquires the transmission timing information for the first cell from the base station apparatus 3, the mobile station apparatus 1-1 restarts (resets) the transmission timing timer. Further, when the transmission timing timer expires, the mobile station apparatus 1-1 stops uplink transmission in all cells.

  In the above example, the activation instruction 1 message and the activation instruction 2 message are separately notified. However, the activation instruction 1 message and the activation instruction 2 message may be combined into one message. That is, downlink reception start and uplink transmission start (activation instruction 1) for each cell in one message, downlink reception start and uplink transmission prohibition (activation instruction 2), or downlink It may be configured to indicate reception stop and uplink transmission stop (deactivation instruction).

The operation of the mobile station apparatus 1-1 will be described below using the flowchart of FIG.
The mobile station apparatus 1-1 receives the activation instruction message from the base station apparatus 3 (step S101). The mobile station apparatus 1-1 sets the variable i to 1 (step S102). The mobile station apparatus 1-1 checks whether the activation instruction message for the cell i is the activation instruction 1 or the activation instruction 2 (step S103). If the received activation instruction is the activation instruction 1, the mobile station apparatus starts downlink reception and uplink transmission for the cell i (step S104).

  When the received activation instruction message is the activation instruction 2, the mobile station apparatus 1-1 starts only downlink reception for the cell i (step S105). At this time, the mobile station apparatus 1-1 does not perform uplink transmission. 1 is added to the variable i (step S106). The mobile station apparatus 1-1 checks whether or not the variable i is equal to or less than the number of cells allocated from the base station apparatus 3 (step S107). When the variable i is equal to or less than the number of cells allocated from the base station apparatus 3, the process returns to step S102 to perform activation instruction processing for other cells i. When the variable i exceeds the number of cells allocated from the base station apparatus 3, the mobile station apparatus 1-1 ends the activation instruction receiving process.

The operation of the base station apparatus 3 will be described below using the flowchart of FIG.
The base station device 3 determines a cell to be activated or deactivated from the data amount of data transmitted to the mobile station device 1-1 and the data amount of data transmitted from the mobile station device 1-1 (step S201). The base station apparatus 3 sets 1 to the variable i (step S202). The base station apparatus 3 confirms whether the cell i is a cell whose activation / deactivation state is to be changed (step S203).

  If the cell i is a cell whose activation / deactivation state is to be changed, the base station apparatus 3 checks whether or not the transmission timing of the transmission timing group to which the cell i belongs is valid (step S204). When the transmission timing of the transmission timing group to which the cell i belongs is valid, the base station apparatus 3 sets the activate instruction 1 (step S205). When the transmission timing of the transmission timing group to which the cell i belongs is invalid, the base station apparatus 3 sets the activate instruction 2 (step S206).

  If the cell i is a cell whose activation / deactivation state is not changed, the base station device 3 confirms whether the cell i is activated (step S207). When the cell i is activated, the base station apparatus 3 sets again the activation instruction currently set to the cell i (step S208). When the cell i has been deactivated, the base station apparatus 3 sets a deactivation instruction (step S209). The base station apparatus 3 adds 1 to the variable i (step S210). The base station apparatus 3 checks whether the variable i is equal to or less than the number of cells assigned to the mobile station apparatus 1-1 (step S211). If the variable i is less than or equal to the number of cells assigned to the mobile station apparatus 1-1, the process returns to step S203 and the activation instruction message transmission process for other cells i is performed. When the variable i exceeds the number of cells assigned to the mobile station apparatus 1-1, the base station apparatus 3 transmits an activation instruction message to the mobile station apparatus 1-1 (step S212), and ends the activation instruction message transmission process. To do.

  As described above, the base station apparatus 3 notifies the mobile station apparatus 1-1 of the activation instruction indicating the downlink reception start and the uplink transmission prohibition, thereby acquiring the transmission timing to the mobile station apparatus 1-1. It is possible to prohibit uplink transmission to a cell that does not exist.

<Second Embodiment>
In the first embodiment, when the base station apparatus 3 operates the transmission timing timer by notifying the mobile station apparatus 1-1 of information indicating prohibition of uplink transmission to the cells of each transmission timing group. However, transmission is prohibited for cells whose transmission timing is not valid. In the present embodiment, an example is shown in which uplink transmission is prohibited for a cell whose transmission timing is not valid even when the transmission timing timer operates in a single mobile station apparatus.

[Configuration description]
FIG. 1 is a diagram illustrating a configuration of a mobile station apparatus according to an embodiment of the present invention. The mobile station apparatuses 1-1 to 1-3 include a radio unit 101, a transmission processing unit 103, a modulation unit 105, a transmission HARQ processing unit 107, a control unit 109, an uplink reference signal generation unit 111, a random access preamble generation unit 113, The reception processing unit 115, the demodulation unit 117, the reception HARQ processing unit 119, and the mobile station management unit 121 are configured. The mobile station management unit 121 includes an UL schedule unit 123, a control data creation unit 125, a control data analysis unit 127, a cell management unit 129, and a TA management unit 131.

  Note that the radio unit 101, the transmission processing unit 103, the modulation unit 105, the transmission HARQ processing unit 107, the reception processing unit 115, the demodulation unit 117, and the reception HARQ processing unit 119 communicate in consideration of communication with a plurality of cells. It is assumed that the number of cells is the same as the number of cells to be processed. Radio section 101, transmission processing section 103, modulation section 105, transmission HARQ processing section 107, control section 109, uplink reference signal generation section 111, random access preamble generation section 113, reception processing section 115, demodulation section 117, reception HARQ processing Since the operation of the unit 119 is the same as that of the first embodiment, description thereof is omitted.

  The mobile station management unit 121 includes an UL schedule unit 123, a control data creation unit 125, a control data analysis unit 127, a cell management unit 129, and a TA management unit 131. The control data creation unit 125 creates an ACK / NACK message of data from the decoding result of the received data from the reception HARQ processing unit 119, and creates control data such as a message indicating downlink radio quality. The control data is output to the transmission HARQ processing unit 107. The control data analysis unit 127 analyzes the control data input from the reception HARQ processing unit 119.

  The control data analysis unit 127 receives cell system information (or cell setting information), cell allocation information, random access instruction information, a random access response message, a contention resolution message, an uplink received from the base station apparatus 3. The link reference signal generation information, the activation instruction message, and the deactivation instruction message are output to the cell management unit 129, and the activation instruction message, the deactivation instruction message, the transmission timing message, the transmission timing timer information, and the uplink transmission prohibition timer information are TA. The data is output to the management unit 131.

  The UL scheduling unit 123 is configured to transmit the uplink data scheduling information from the base station apparatus 3 and the transmitted uplink data response (ACK / NACK) via the control unit 109, the transmission processing unit 103, the modulation unit 105, The transmission HARQ processing unit 107 is controlled. Further, it instructs the cell management unit 129 to start the random access procedure based on the control information from the upper layer.

  The cell management unit 129 manages the cells allocated from the base station apparatus 3, and system information or configuration information (configuration of physical channel, transmission power information, random access information, and the like) for each cell received from the base station apparatus 3. Each cell system information such as uplink reference signal generation information, radio resources for uplink reference signals (measurement reference signals), radio resources for uplink control channel PUCCH, etc. are individually assigned to mobile station apparatus 1-1. Managed radio resources). The cell management unit 129 notifies the random access information to the random access preamble generation unit 113 via the control unit 109 and notifies the uplink reference signal generation unit 111 of the generation information of the uplink reference signal.

  The cell management unit 129 notifies the TA management unit 131 of group information of cells having the same transmission timing. The cell management unit 129 starts a contention-based random access procedure when starting communication or when making a schedule request for uplink data, selects a random preamble from random access information, and controls the preamble number of the selected random preamble. The random access preamble generation unit 113 is notified through 109. When the cell management unit 129 acquires the random access instruction information, the cell management unit 129 starts a non-contention based random access procedure, and transmits the preamble number and the random access channel number included in the random access instruction information via the control unit 109. The random access preamble generation unit 113 is notified.

  When the cell management unit 129 acquires the random access response message, the cell management unit 129 outputs the transmission timing information included in the random access response message to the TA management unit 131, and outputs the information of the L2 / L3 message to the control data creation unit 125. If the non-contention based random access procedure is being executed, the non-contention based random access procedure is terminated. When acquiring the contention resolution message, the cell management unit 129 ends the contention-based random access procedure.

  When acquiring the activation instruction message, the cell management unit 129 receives, with respect to the cell indicated by the activation instruction 1 message, the reception processing unit 115, the demodulation unit 117, the reception HARQ processing unit 119, the radio unit 101, the transmission processing unit 103, and the modulation unit. 105, the transmission HARQ processing unit 107 and the uplink reference signal generation unit 111 are instructed to start operation via the control unit 109. However, the cell management unit 129 starts the operations of the transmission processing unit 103, the modulation unit 105, the transmission HARQ processing unit 107, and the uplink reference signal generation unit 111 for the cell for which transmission prohibition is instructed from the TA management unit 131. Do not give instructions. When the cell management unit 129 acquires the deactivation instruction message, the cell processing unit 129 receives, with respect to the cell indicated by the deactivation instruction message, the reception processing unit 115, the demodulation unit 117, the reception HARQ processing unit 119, the radio unit 101, the transmission processing unit 103, the modulation Unit 105, transmission HARQ processing unit 107, and uplink reference signal generation unit 111 are instructed to stop operation via control unit 109.

  The TA management unit 131 manages the transmission timing and the transmission timing timer for each cell or each transmission timing group. Further, the TA management unit 131 also manages group information of cells having the same transmission timing. When the TA management unit 131 acquires the transmission timing message, the TA management unit 131 notifies the transmission processing unit 103 via the control unit 109 of transmission timing group information and transmission timing information to which the transmission timing included in the transmission timing message is applied. When acquiring the transmission timing of the first cell, the TA management unit 131 starts or restarts the transmission timing timer. The TA management unit 131 also manages an uplink transmission prohibition timer. When acquiring the activation instruction message, the TA management unit 131 starts an uplink transmission prohibition timer for the second cell that has not acquired the transmission timing. Moreover, when the TA management unit 131 acquires the transmission timing information for the second cell for which the transmission timing has not been acquired, the TA management unit 131 stops the uplink transmission prohibition timer.

<Description of operation>
The mobile station apparatus 1-1 sets a timer (hereinafter referred to as an uplink transmission prohibition timer) that prohibits uplink transmission for the transmission timing group configured by the second cell or the second cell. During the operation of the uplink transmission prohibition timer, the uplink transmission to the cells of the transmission timing group composed of the second cell or the second cell is prohibited. In addition, when the transmission timing for the cell of the transmission timing group configured by the second cell or the second cell is acquired (the transmission timing becomes valid), the mobile station apparatus 1-1 stops the uplink transmission prohibition timer. Then, uplink transmission is performed.

Operations of the mobile station apparatus 1-1 and the base station apparatus 3 will be described.
The base station apparatus groups cells having the same transmission timing from the mobile station apparatus (hereinafter referred to as a transmission timing group). Then, the base station apparatus sets one cell as the first cell and sets the other cells as the second cell.

  The first cell has a periodic radio resource for notifying the telephone and real-time information, an uplink control channel PUCCH for use in response to the downlink shared channel PDSCH, downlink radio channel quality information, etc. Important functions such as allocation of an uplink control channel PUCCH for notifying control information of the same are set. For this reason, a cell having a good communication environment such as a good radio propagation path state is set as the first cell.

  In addition, the transmission timing group includes a first transmission timing group composed of a first cell and a second cell having the same uplink transmission timing as the first cell, and the same uplink different from the uplink transmission timing of the first cell. It is classified into a second transmission timing group composed of second cells of link transmission timing. The first transmission timing group includes at least a first cell, and the second transmission timing group includes at least one second cell.

  As an example, the base station apparatus 3 includes cells 1 to 5 as shown in FIG. 3, and each of the cells 1 to 3 is a transmission timing group (transmission timing group 1) having the same transmission timing. The cell 5 has the same transmission timing and is a transmission timing group (transmission timing group 2) different from the transmission timing group 1.

  The mobile station apparatus 1-1 performs a cell search and finds one cell of the base station apparatus 3. Here, assume that cell 1 is found. The mobile station apparatus 1-1 receives the broadcast channel PBCH of the cell 1, and acquires system information of the cell 1 (cell physical channel configuration, transmission power information, random access information, etc.). Then, the mobile station apparatus 1-1 selects and generates a random access preamble using random access information included in the system information for initial access, and selects a random access channel RACH for transmitting the random access preamble. Then, a random access preamble (message 1) is transmitted to the random access channel RACH of the selected cell 1.

  And the mobile station apparatus 1-1 acquires the random access response message (message 2) containing the transmission timing information with respect to the cell 1 from the base station apparatus 3, and the uplink with respect to the cell 1 from the transmission timing information contained in the random access response. The transmission timing of the link component carrier is adjusted, and the transmission timing timer is started. The mobile station apparatus 1-1 transmits an L2 / L3 message (message 3) to the base station apparatus 3 via the cell 1. The mobile station apparatus 1-1 transmits the message 3 including the content indicating the initial access in the message 3. And the mobile station apparatus 1-1 will complete | finish a contention based random access procedure, if contention resolution (message 4) is received from the base station apparatus 3. FIG.

  After the random access procedure is completed, the base station apparatus 3 allocates a cell to be used by the mobile station apparatus 1-1 and notifies the mobile station apparatus 1-1 of allocation information. Here, as shown in FIG. 4, the base station apparatus 3 assigns cells 1 to 5 to the mobile station apparatus 1-1, and sets cell 1 as the first cell and cells 2 to 5 as the second cell. Then, the cells 1 to 3 are set to a transmission timing group (transmission timing group 1) having the same transmission timing, and the cells 4 and 5 are set to a transmission timing group (transmission timing group 2) having the same transmission timing. A random access procedure is set (permitted) for the cell 5 of the transmission timing group 2.

  And the base station apparatus 3 sets the setting information (system information of each cell) of the cells (cell 1 to cell 5) allocated to the mobile station apparatus 1-1, group information of the transmission timing group, and uplink control of the first cell. Channel PUCCH allocation information, uplink reference signal (measurement reference signal) generation information, radio resource allocation information for transmitting an uplink reference signal (measurement reference signal), and periodic uplink shared channel PDSCH radio The mobile station apparatus 1-1 is also notified of setting information for each mobile station apparatus such as resource allocation information. Also, the base station apparatus 3 notifies the cell setting information of random access information and uplink transmission prohibition timer information as information on the cell for which the random access procedure is permitted. Here, since the base station apparatus 3 has set the cell 1 as the first cell, the base station apparatus 3 notifies the cell 1 and the cell 5 of the random access information. The mobile station apparatus 1-1 recognizes the random access procedure for the cell from which the random access information has been acquired based on the set parameters.

  After notifying the above information, the base station apparatus 3 notifies the mobile station apparatus 1-1 of an activation instruction to the cells 2 to 5. When the activation is instructed, the mobile station apparatus 1-1 confirms whether or not the transmission timing of each transmission timing group has been acquired. Since the mobile station apparatus 1-1 acquires the transmission timing of the cell 1 in the transmission timing group 1, the cell 2 and the cell 3 of the same transmission timing group as the cell 1 are obtained from the acquired transmission timing information of the cell 1. The uplink transmission timing is adjusted. Since the transmission timing group 2 has not acquired the transmission timing, the mobile station device 1-1 starts the uplink transmission prohibition timer. Then, downlink reception is started for cell 2 to cell 5, and uplink transmission is started for cell 2 and cell 3. In addition, although the cell 4 and the cell 5 are activated, since the uplink transmission prohibition timer is operating, the mobile station apparatus 1-1 does not perform uplink transmission.

  Note that uplink transmission refers to transmission of an uplink shared channel PUSCH other than random access preamble transmission, transmission of an uplink control channel PUCCH, and transmission of an uplink reference signal. Thereafter, data is exchanged between the mobile station apparatus 1-1 and the base station apparatus 3 via the downlink component carriers of the cells 1 to 5 and the uplink component carriers of the cells 1 to 3.

  Since the amount of transmission data from the mobile station apparatus 1-1 increases, the uplink transmission timings of the cell 4 and the cell 5 are not effective, and the uplink component carrier is not used. Random access instruction information for instructing 1-1 to perform a non-contention based random access procedure is notified by the downlink control channel PDCCH. Here, it is assumed that the base station apparatus 3 notifies the mobile station apparatus 1-1 of random access instruction information for the cell 5. The random access instruction information includes a preamble number and a random access channel number, and the mobile station apparatus 1-1 includes the preamble number specified by the base station apparatus 3 and the setting information of the cell 5 that it holds. A random access preamble is generated from the random access information, a random access channel RACH for transmitting the random access preamble is selected, and the random access preamble is transmitted to the random access channel RACH of the cell 5.

  When the base station apparatus 3 detects the random access preamble, the base station apparatus 3 calculates a transmission timing shift amount from the random access preamble, and the mobile station apparatus 1-1 includes the random timing including the transmission timing information via the downlink component carrier of the cell 5. Notify access response. When receiving the random access response, the mobile station apparatus 1-1 adjusts the transmission timing information included in the random access response as the uplink transmission timing of the cell 5, and further sets the transmission timing information to the same transmission timing group. The uplink transmission timing of cell 4 is adjusted, and the non-contention based random access procedure is terminated. And the mobile station apparatus 1-1 stops the uplink transmission prohibition timer of the transmission timing group 2. The mobile station apparatus 1-1 starts uplink transmission to the cell 4 and the cell 5. Thereafter, data is exchanged between the mobile station apparatus 1-1 and the base station apparatus 3 including the uplink component carriers of the cells 4 and 5.

  Note that the length of the uplink transmission prohibition timer is set to be equal to or longer than the length of the transmission timing timer. Also, when the uplink transmission prohibition timer is operating for a transmission timing group composed of only the second cell, the transmission timing information of the first cell is notified and the transmission timing timer is restarted (reset) Then, the uplink transmission prohibition timer is also restarted (reset). The start timing of the uplink transmission prohibition timer may be the time when the mobile station apparatus 1-1 acquires the uplink transmission prohibition timer information from the base station apparatus 3.

The operation when the mobile station apparatus 1-1 receives the activation instruction will be described below with reference to the flowchart of FIG.
The mobile station apparatus 1-1 receives the activation instruction message from the base station apparatus 3 (step S301). The mobile station apparatus 1-1 confirms whether or not the transmission timing for the second cell for which activation has been instructed (or the transmission timing group including the cell for which activation has been instructed) has been acquired (step S302). If the transmission timing of the second cell for which activation has been instructed has not been acquired, the mobile station apparatus 1-1 starts an uplink transmission prohibition timer (step S303). The mobile station apparatus 1-1 confirms whether the transmission timing for the second cell (or the transmission timing group including the cell for which activation has been instructed) in which the uplink transmission prohibition timer is operating has been acquired (step S304).

  When acquiring the transmission timing for the second cell in which the uplink transmission prohibition timer is operating, the mobile station apparatus 1-1 stops the uplink transmission prohibition timer (step S305). And the mobile station apparatus 1-1 starts the uplink transmission to the 2nd cell which acquired the transmission timing (step S306). If the transmission timing for the second cell in which the transmission prohibition timer is operating has not been acquired, the mobile station apparatus 1-1 checks whether the transmission timing of the first cell has been acquired (step S307). When the transmission timing of the first cell is acquired, the transmission prohibition timer is restarted (step S308), and the process returns to step S303. If the transmission timing of the first cell has not been acquired, the process returns to step S303. When acquiring the transmission timing of the cell for which activation has been instructed, the mobile station apparatus 1-1 starts uplink transmission to the second cell from which the transmission timing has been acquired (step S306), and uplink transmission prohibition timer processing Exit.

  Further, when the base station apparatus 3 transmits the activation instruction 2 message to the mobile station apparatus by combining the first embodiment and the second embodiment, the mobile station apparatus 1-1 starts the uplink transmission prohibition timer. Thus, it is also possible to prohibit uplink transmission for a cell from which transmission timing has not been acquired.

  By doing in this way, the mobile station apparatus 1-1 can prohibit an uplink transmission with respect to the cell in which transmission timing is not effective even if the transmission timing timer is operating.

<Third Embodiment>
In the first embodiment and the second embodiment, the case where the transmission timing is acquired using the random access procedure has been described. However, in this embodiment, the mobile station apparatus 1-1 does not use the random access procedure and the second The case where the cell transmission timing is obtained by calculation will be described.

[Configuration description]
FIG. 1 is a diagram illustrating a configuration of a mobile station apparatus according to an embodiment of the present invention. The mobile station apparatuses 1-1 to 1-3 include a radio unit 101, a transmission processing unit 103, a modulation unit 105, a transmission HARQ processing unit 107, a control unit 109, an uplink reference signal generation unit 111, a random access preamble generation unit 113, The reception processing unit 115, the demodulation unit 117, the reception HARQ processing unit 119, and the mobile station management unit 121 are configured. The mobile station management unit 121 includes an UL schedule unit 123, a control data creation unit 125, a control data analysis unit 127, a cell management unit 129, and a TA management unit 131.

  Note that the radio unit 101, the transmission processing unit 103, the modulation unit 105, the transmission HARQ processing unit 107, the reception processing unit 115, the demodulation unit 117, and the reception HARQ processing unit 119 communicate in consideration of communication with a plurality of cells. It is assumed that the number of cells is the same as the number of cells to be processed. The operations of radio section 101, transmission processing section 103, modulation section 105, transmission HARQ processing section 107, control section 109, uplink reference signal generation section 111, random access preamble generation section 113, demodulation section 117, and reception HARQ processing section 119 are as follows. Since it is the same as that of the first embodiment, the description thereof is omitted.

  The reception processing unit 115 performs FFT (Fast Fourier Transform) processing on the input signal from the radio unit 101 and outputs the signal to the demodulation unit 117. The demodulator 117 demodulates the input data and outputs the demodulated data to the reception HARQ processor 119. The reception processing unit 115 measures the difference between the reception timing of the signal from the first cell and the reception timing of the signal from the second cell, and determines the reception timing of the signal from the first cell and the signal from the second cell. The mobile station management unit 121 is notified of the reception timing difference information.

  The mobile station management unit 121 includes an UL schedule unit 123, a control data creation unit 125, a control data analysis unit 127, a cell management unit 129, and a TA management unit 131. The control data creation unit 125 creates an ACK / NACK message of data from the decoding result of the received data from the reception HARQ processing unit 119, and creates control data such as a message indicating downlink radio quality. The control data is output to the transmission HARQ processing unit 107. The control data analysis unit 127 analyzes the control data input from the reception HARQ processing unit 119.

  The control data analysis unit 127 receives cell system information (or cell setting information), cell allocation information, random access instruction information, a random access response message, a contention resolution message, an uplink received from the base station apparatus 3. The link reference signal generation information, the activation instruction message, and the deactivation instruction message are output to the cell management unit 129, and the transmission timing message and the transmission timing timer information are output to the TA management unit 131.

  The UL scheduling unit 123 is configured to transmit the uplink data scheduling information from the base station apparatus 3 and the transmitted uplink data response (ACK / NACK) via the control unit 109, the transmission processing unit 103, the modulation unit 105, The transmission HARQ processing unit 107 is controlled. Further, it instructs the cell management unit 129 to start the random access procedure based on the control information from the upper layer.

  The cell management unit 129 manages the cells allocated from the base station apparatus 3, and system information or configuration information (configuration of physical channel, transmission power information, random access information, and the like) for each cell received from the base station apparatus 3. Each cell system information such as uplink reference signal generation information, radio resources for uplink reference signals (measurement reference signals), radio resources for uplink control channel PUCCH, etc. are individually assigned to mobile station apparatus 1-1. Managed radio resources). The cell management unit 129 notifies the random access information to the random access preamble generation unit 113 via the control unit 109 and notifies the uplink reference signal generation unit 111 of the generation information of the uplink reference signal.

  The cell management unit 129 notifies the TA management unit 131 of group information of cells having the same transmission timing. The cell management unit 129 starts a contention-based random access procedure when starting communication or when making a schedule request for uplink data, selects a random preamble from random access information, and controls the preamble number of the selected random preamble. The random access preamble generation unit 113 is notified through 109. When the cell management unit 129 acquires the random access instruction information, the cell management unit 129 starts a non-contention based random access procedure, and transmits the preamble number and the random access channel number included in the random access instruction information via the control unit 109. The random access preamble generation unit 113 is notified.

  When the cell management unit 129 acquires the random access response message, the cell management unit 129 outputs the transmission timing information included in the random access response message to the TA management unit 131, and outputs the information of the L2 / L3 message to the control data creation unit 125. If the non-contention based random access procedure is being executed, the non-contention based random access procedure is terminated. When acquiring the contention resolution message, the cell management unit 129 ends the contention-based random access procedure.

  When the cell management unit 129 acquires the activation instruction message, the cell processing unit 129 receives, with respect to the cell indicated by the activation instruction message, the reception processing unit 115, the demodulation unit 117, the reception HARQ processing unit 119, the radio unit 101, the transmission processing unit 103, and the modulation unit 105. The transmission HARQ processing unit 107 and the uplink reference signal generation unit 111 are instructed to start operation via the control unit 109. When the cell management unit 129 acquires the deactivation instruction message, the cell processing unit 129 receives, with respect to the cell indicated by the deactivation instruction message, the reception processing unit 115, the demodulation unit 117, the reception HARQ processing unit 119, the radio unit 101, the transmission processing unit 103, the modulation Unit 105, transmission HARQ processing unit 107, and uplink reference signal generation unit 111 are instructed to stop operation via control unit 109.

  The TA management unit 131 manages the transmission timing and the transmission timing timer for each cell or each transmission timing group. Further, the TA management unit 131 also manages group information of cells having the same transmission timing. When the TA management unit 131 acquires the transmission timing message, the transmission timing of the second cell indicates the transmission timing included in the transmission timing message, and the reception timing of the signals from the first cell and the second cell acquired from the reception processing unit 115. The transmission timing of the second cell is calculated from the difference. The TA management unit 131 notifies the transmission processing unit 103 of the notified transmission timing of the first cell and the calculated transmission timing information of the second cell via the control unit 109, and starts or restarts the transmission timing timer. To do.

<Description of operation>
When the mobile station apparatus 1-1 receives the activation instruction for the second cell, the mobile station apparatus 1-1 sets the transmission timing for the second cell before starting the uplink transmission and the difference in the downlink reception timing between the first cell and the second cell. The transmission timing of the second cell is calculated from the transmission timing for the first cell, and the transmission timing of the second cell is set after calculating the transmission timing of the second cell. Also. When receiving the transmission timing for the first cell, the mobile station device 1-1 determines the transmission timing for the second cell from the difference in downlink reception timing between the first cell and the second cell and the transmission timing for the first cell. The transmission timing of the second cell is calculated. After calculating the transmission timing of the second cell, the mobile station device 1-1 sets the transmission timing of the first cell and the second cell, and then restarts (resets) the transmission timing timer. In this way, transmission timing is always set before starting uplink transmission of the second cell.

Operations of the mobile station apparatus 1-1 and the base station apparatus 3 will be described.
The base station apparatus 3 groups the cells having the same transmission timing from the mobile station apparatus 1-1 (hereinafter referred to as a transmission timing group). Then, the base station apparatus 3 sets one cell as the first cell and sets the other cells as the second cell.

  The first cell has a periodic radio resource for notifying the telephone and real-time information, an uplink control channel PUCCH for use in response to the downlink shared channel PDSCH, downlink radio channel quality information, etc. An important function such as assigning an uplink control channel PUCCH for notifying control information of is set. For this reason, a cell having a good communication environment such as a good radio propagation path state is set as the first cell.

  In addition, the transmission timing group includes a first transmission timing group composed of a first cell and a second cell having the same uplink transmission timing as the first cell, and the same uplink different from the uplink transmission timing of the first cell. It is classified into a second transmission timing group composed of second cells of link transmission timing. The first transmission timing group includes at least a first cell, and the second transmission timing group includes at least one second cell.

  As an example, the base station apparatus 3 includes cells 1 to 5 as shown in FIG. 3, and each of the cells 1 to 3 is a transmission timing group (transmission timing group 1) having the same transmission timing. The cell 5 has the same transmission timing and is a transmission timing group (transmission timing group 2) different from the transmission timing group 1.

  The mobile station apparatus 1-1 performs a cell search and finds one cell of the base station apparatus 3. Here, assume that cell 1 is found. The mobile station apparatus 1-1 receives the broadcast channel PBCH of the cell 1, and acquires system information of the cell 1 (cell physical channel configuration, transmission power information, random access information, etc.). Then, the mobile station apparatus 1-1 selects and generates a random access preamble using random access information included in the system information for initial access, and selects a random access channel RACH for transmitting the random access preamble. Then, a random access preamble (message 1) is transmitted to the random access channel RACH of the selected cell 1.

  And the mobile station apparatus 1-1 acquires the random access response message (message 2) containing the transmission timing information with respect to the cell 1 from the base station apparatus 3, and the uplink with respect to the cell 1 from the transmission timing information contained in the random access response. The transmission timing of the link component carrier is adjusted, and the transmission timing timer is started. The mobile station apparatus 1-1 transmits an L2 / L3 message (message 3) to the base station apparatus 3 via the cell 1. The mobile station apparatus 1-1 transmits the message 3 including the content indicating the initial access in the message 3. And the mobile station apparatus 1-1 will complete | finish a contention based random access procedure, if contention resolution (message 4) is received from the base station apparatus 3. FIG.

  After the random access procedure is completed, the base station apparatus 3 allocates a cell to be used by the mobile station apparatus 1-1 and notifies the mobile station apparatus 1-1 of allocation information. Here, as shown in FIG. 4, the base station apparatus 3 assigns cells 1 to 5 to the mobile station apparatus 1-1, and sets cell 1 as the first cell and cells 2 to 5 as the second cell. Then, cells 1 to 3 are set to the same transmission timing group (first transmission timing group, transmission timing group 1), and cell 4 and cell 5 are set to the same transmission timing group (second transmission). Set to timing group, transmission timing group 2).

  And the base station apparatus 3 sets the setting information (system information of each cell) of the cells (cell 1 to cell 5) allocated to the mobile station apparatus 1-1, group information of the transmission timing group, and uplink control of the first cell. Channel PUCCH allocation information, uplink reference signal (measurement reference signal) generation information, radio resource allocation information for transmitting an uplink reference signal (measurement reference signal), and periodic uplink shared channel PDSCH radio The mobile station apparatus 1-1 is also notified of setting information for each mobile station apparatus such as resource allocation information. In addition, the base station apparatus 3 notifies the cell setting information including random access information as information on a cell for which a random access procedure is permitted. Here, since the base station apparatus 3 sets the cell 1 as the first cell, the base station apparatus 3 notifies the random access information only to the cell 1.

  After receiving the above information, the mobile station device 1-1 calculates the transmission timing of the second cell (cell 2 to cell 5). Since cell 2 and cell 3 are cells in the same transmission timing group as cell 1, the transmission timing of cell 1 is applied to the transmission timing of cell 2 and cell 3. Since cell 4 and cell 5 are cells in a transmission timing group different from cell 1, the transmission timings of cell 4 and cell 5 are the downlink reception timing of cell 1 and the downlink reception timing of cell 4 or cell 5, respectively. And the transmission timing of cell 1 are calculated.

  The transmission timings of the cell 4 and the cell 5 are obtained by measuring the downlink reception timings of the cell 1 and the cell 4, calculating the downlink reception timing difference between the cell 1 and the cell 4, and using the transmission timing of the cell 1 as a reference. Can be obtained by adding (or subtracting) the difference between the reception timings of cell 1 and cell 4 to the transmission timing of cell 1.

  Assume that the base station device 3 notifies the mobile station device 1-1 of an activation instruction to the cells 2 to 5 after notifying the information. When the activation is instructed, the mobile station apparatus 1-1 sets the transmission timing of the cell 2 to the cell 5, starts the downlink reception for the cells 2 to 5, and the uplink from the cell 2 to the cell 5 Start link transmission. Data is transmitted and received between the base station apparatus 3 and the mobile station apparatus 1-1 via the cells 1 to 5.

  If the mobile station apparatus 1-1 has not calculated the transmission timing of the second cell even after receiving the activation instruction, the mobile station apparatus 1-1 calculates the transmission timing by delaying the start of downlink reception and uplink transmission. After the transmission timing is applied, downlink reception and uplink transmission are started. Further, the transmission timing of the second cell may be calculated after receiving the activation instruction from the base station apparatus 3.

  And the base station apparatus 3 calculates the transmission timing of the cell 1 from the reference signal transmitted via the cell 1 of the first cell from the mobile station apparatus 1-1, and transmits the cell 1 to the mobile station apparatus 1-1. Notify timing information. When the mobile station apparatus 1-1 receives the transmission timing information of the cell 1, the mobile station apparatus 1-1 calculates the transmission timings of the cells 2 to 5. Since the transmission timings of the cell 2 and the cell 3 are cells in the same transmission timing group as the cell 1, the transmission timing of the cell 1 is applied.

  Since the transmission timing of the cell 4 and the cell 5 is a cell in a transmission timing group different from that of the cell 1, the downlink reception timing of the cell 1 and the cell 4 is measured, and the downlink reception timing difference between the cell 1 and the cell 4 is measured. Is calculated by adding (or subtracting) the downlink reception timing difference between cell 1 and cell 4 to the transmission timing of cell 1, with the transmission timing of cell 1 as a reference. After calculating the transmission timings of the cells 2 to 5, the mobile station apparatus 1-1 sets the transmission timings of the cells 1 to 5. After setting the transmission timing for all cells, the mobile station apparatus 1-1 restarts (resets) the transmission timing timer.

  When the transmission timing timer expires, the mobile station apparatus 1-1 discards the transmission timing of all cells and stops uplink transmission other than random access preamble transmission. Also, the transmission timing timer is restarted (reset) only when the transmission timing for at least the first cell is set, and the transmission timing is set for the transmission timing group composed of the second cell or the second cell. The transmission timing timer is not restarted. In addition, uplink transmission means transmission of uplink shared channel PUSCH other than random access preamble transmission, transmission of uplink control channel PUCCH, transmission of an uplink reference signal, or transmission processing.

The operation when the mobile station apparatus 1-1 receives an activation instruction from the base station apparatus 3 will be described below using the flowchart of FIG.
The mobile station apparatus 1-1 receives the activation instruction from the base station apparatus 3 (step S401). The mobile station apparatus 1-1 starts downlink reception for the second cell instructed by the activation instruction (step S402). The mobile station device 1-1 confirms whether the second cell specified by the activation instruction is a cell in the same transmission timing group as the first cell (step S403). In the case of a cell in the same transmission timing group as the first cell, the mobile station apparatus 1-1 sets the transmission timing of the second cell indicated by the activation instruction as the same transmission timing as the first cell (step S404). In the case of a cell in a transmission timing group different from the first cell, the mobile station apparatus 1-1 calculates the transmission timing of the second cell by the method as described above (step S405). The mobile station apparatus 1-1 sets the calculated transmission timing (step S406). And the mobile station apparatus 1-1 starts the uplink transmission of the cell designated by the activation instruction (step S407), and ends the activation instruction reception process. Note that the transmission timing of the second cell may be calculated for each transmission timing group.

The operation when the mobile station apparatus 1-1 receives the transmission timing information of the first cell from the base station apparatus 3 will be described below using the flowchart of FIG.
The mobile station apparatus 1-1 receives the transmission timing information of the first cell from the base station apparatus 3 (step S501). The mobile station apparatus 1-1 calculates the transmission timing of the second cell by calculation (step S502). The mobile station apparatus 1-1 sets the transmission timing of the first cell and all the second cells. (Step S503). The mobile station apparatus 1-1 restarts (resets) the transmission timing timer (step S504).

Note that the transmission timing of the second cell may be calculated for each transmission timing group, and the transmission timing may be set for each transmission timing group.
By doing so, the transmission timing of the second cell is always set before starting the uplink transmission of the second cell, and the transmission timing is invalid while the transmission timing timer is operating. This state can be eliminated.

  Further, for convenience of explanation, the mobile station device 1-1 and the base station device 3 of the embodiment have been described using functional block diagrams, but the functions of the respective units of the mobile station device 1-1 and the base station device 3 or these functions A program for realizing a part of the above functions is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system and executed, whereby the mobile station apparatus and the base station apparatus Control may be performed. The “computer system” here includes an OS and hardware such as peripheral devices.

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

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

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

1-1 to 1-3 Mobile station apparatus 3 Base station apparatus 5-1, 5-2 Repeater 101, 201 Radio section 103, 203 Transmission processing section 115, 215 Reception processing section 105, 205 Modulation section 117, 217 Demodulation section 107 , 207 Transmission HARQ processing unit 119, 219 Reception HARQ processing unit 109, 209 Control unit 121 Mobile station management unit 221 Base station management unit 123 UL scheduling unit 125, 225 Control data creation unit 127, 227 Control data analysis unit 129, 229 cell Management unit 131, 231 TA management unit 111 Uplink reference signal generation unit 211 Downlink reference signal generation unit 113 Random access preamble generation unit 213 Preamble detection unit 223 DL / UL schedule unit

Claims (18)

When the base station apparatus allocates a plurality of cells to the mobile station apparatus and one transmission timing timer for uplink transmission timing management is operating, the mobile station apparatus transmits to the base station apparatus via the plurality of cells. A wireless communication system that performs link transmission,
The plurality of cells are composed of one first cell and one or more second cells,
The base station device transmits a first activation instruction message or a second activation instruction message for the second cell to the mobile station device,
When the mobile station apparatus receives the first activation instruction message, the mobile station apparatus starts downlink reception and uplink transmission to the second cell instructed by the first activation instruction message, When the activation instruction message is received, only a downlink reception is started for the second cell indicated by the second activation instruction message. The wireless communication system according to claim 1,
The radio communication system, wherein when the transmission timing timer expires, the mobile station apparatus stops uplink transmission of the second cell that has started downlink reception and uplink transmission. Only when the base station apparatus allocates a plurality of cells to the mobile station apparatus and one transmission timing timer for uplink transmission timing management is operating, the mobile station apparatus transmits to the base station apparatus via the plurality of cells. A wireless communication system that performs link transmission,
The plurality of cells are always composed of one first cell of an activation cell and one or more second cells of an activation cell or a deactivation cell,
The first cell and the second cell are different from the first transmission timing group composed of the second cell having the same uplink transmission timing as the first cell and the uplink transmission timing of the first cell. Grouped into a second transmission timing group composed of the second cell of uplink transmission timing,
The base station device transmits an activation instruction message to the mobile station device to at least one of the second cells,
When the mobile station apparatus has received the activation instruction message and has not acquired transmission timing information of the second transmission timing group to which the second cell instructed to activate by the activation instruction message belongs, A wireless communication system, wherein an uplink transmission prohibition timer is started for two transmission timing groups. A wireless communication system according to claim 3,
The radio communication system, wherein the mobile station apparatus stops the uplink transmission prohibition timer when acquiring transmission timing information for the second transmission timing group. A wireless communication system according to claim 4,
A wireless communication system, wherein during the operation of the uplink transmission prohibition timer, uplink transmission other than the random access preamble is prohibited for the cells of the second transmission timing group. The wireless communication system according to claim 5, wherein
The wireless communication system, wherein when the transmission timing timer expires and the uplink transmission prohibition timer is operating, the uplink transmission prohibition timer is stopped. Only when the base station apparatus allocates a plurality of cells to the mobile station apparatus and one transmission timing timer for uplink transmission timing management is operating, the mobile station apparatus transmits to the base station apparatus via the plurality of cells. A wireless communication system that performs link transmission,
The plurality of cells are always composed of one first cell of an activation cell and one or more second cells of an activation cell or a deactivation cell,
A first transmission timing group composed of the first cell and the second cell having the same uplink transmission timing as the first cell; and the second cell having a transmission timing different from the transmission timing of the first cell. Grouped into a second transmission timing group consisting of
When the mobile station apparatus receives an activation instruction message for the cell of the second transmission timing group from the base station apparatus, the mobile station apparatus starts downlink reception of the second cell specified by the activation instruction message, Radio transmission characterized in that the transmission timing of the second transmission timing group is calculated, the uplink timing of the second cell is started after the transmission timing is set for the cells of the second transmission timing group system. The wireless communication system according to claim 7,
The mobile station apparatus obtains the transmission timing information of the first cell from the base station apparatus, calculates the transmission timing of the second transmission timing group from the transmission timing and reception timing of the first cell, and A wireless communication system comprising: restarting the transmission timing timer after setting transmission timing for a cell of one transmission timing group and a cell of the second transmission timing group. A base station that allocates a plurality of cells to a mobile station apparatus and receives data transmitted from the mobile station apparatus via the plurality of cells when one transmission timing timer for uplink transmission timing management is operating A device,
The plurality of cells are composed of one first cell and one or more second cells,
Transmitting a first activation instruction message indicating the start of downlink reception and uplink transmission to the second cell or a second activation instruction message indicating the start of only downlink reception to the mobile station apparatus; A base station apparatus characterized by the above. A mobile station apparatus that performs uplink transmission to the base station apparatus via the plurality of cells when a plurality of cells are allocated from the base station apparatus and one transmission timing timer for uplink transmission timing management is operating. There,
The plurality of cells are composed of one first cell and one or more second cells,
When the first activation instruction message or the second activation instruction message is received from the base station apparatus to the second cell, and the first activation instruction message is received, the first activation instruction message indicates When the second activation instruction message is received and the downlink reception and the uplink transmission are started for the second cell, the second cell designated by the second activation instruction message is received. A mobile station apparatus that starts only downlink reception. A mobile station apparatus that performs uplink transmission to the base station apparatus via the plurality of cells only when a plurality of cells are allocated from the base station apparatus and one transmission timing timer for uplink transmission timing management is operating. There,
The plurality of cells always comprising one first cell of an activation cell and one or more second cells of an activation cell or a deactivation cell,
A first transmission timing group configured from the second cell having the same uplink transmission timing as that of the first cell, and a second cell having the same uplink transmission timing different from the uplink transmission timing of the first cell. Grouped into a second transmission timing group,
When receiving an activation instruction message from the base station apparatus, and not acquiring transmission timing information for the second transmission timing group to which the second cell instructed to activate by the activation instruction message belongs, A mobile station apparatus, characterized by starting an uplink transmission prohibition timer for a second transmission timing group. A mobile station apparatus that performs uplink transmission to the base station apparatus via the plurality of cells only when a plurality of cells are allocated from the base station apparatus and one transmission timing timer for uplink transmission timing management is operating. There,
The plurality of cells always composed of one first cell of an activation cell and one or more second cells of an activation cell or a deactivation cell,
A first transmission timing group composed of the first cell and the second cell having the same uplink transmission timing as the first cell; and the second cell having a transmission timing different from the transmission timing of the first cell. Grouped into a second transmission timing group consisting of
When receiving an activation instruction message for the cell of the second transmission timing group from the base station apparatus, start downlink reception of the second cell specified by the activation instruction message, based on the downlink reception timing A mobile station apparatus that calculates transmission timing of a second transmission timing group, sets up transmission timing for a cell of the second transmission timing group, and then starts uplink transmission of the second cell. . When the base station apparatus allocates a plurality of cells to the mobile station apparatus and one transmission timing timer for uplink transmission timing management is operating, the mobile station apparatus transmits to the base station apparatus via the plurality of cells. A wireless communication method applied to a wireless communication system that performs link transmission,
The plurality of cells are composed of one first cell and one or more second cells,
The base station device transmits a first activation instruction message or a second activation instruction message to the second cell to the mobile station device; and
When the mobile station apparatus receives the first activation instruction message, the mobile station apparatus starts downlink reception and uplink transmission for the second cell instructed by the first activation instruction message; A wireless communication method comprising at least a step of starting only downlink reception for the second cell instructed by the second activation instruction message when the second activation instruction message is received. Only when the base station apparatus allocates a plurality of cells to the mobile station apparatus and one transmission timing timer for uplink transmission timing management is operating, the mobile station apparatus transmits to the base station apparatus via the plurality of cells. A wireless communication method applied to a wireless communication system that performs link transmission,
The plurality of cells are always composed of one first cell of an activation cell and one or more second cells of an activation cell or a deactivation cell,
The first cell and the second cell are different from the first transmission timing group composed of the second cell having the same uplink transmission timing as the first cell and the uplink transmission timing of the first cell. Grouped into a second transmission timing group composed of the second cell of uplink transmission timing,
The base station device transmits an activation instruction message to the mobile station device to at least one of the second cells;
The mobile station apparatus receives the activation instruction message, and if the mobile station apparatus has not acquired transmission timing information for the transmission timing group to which the second cell instructed to activate by the activation instruction message belongs, A wireless communication method comprising at least a step of starting an uplink transmission prohibition timer for a transmission timing group. Only when the base station apparatus allocates a plurality of cells to the mobile station apparatus and one transmission timing timer for uplink transmission timing management is operating, the mobile station apparatus transmits to the base station apparatus via the plurality of cells. A wireless communication method applied to a wireless communication system that performs link transmission,
The plurality of cells are always composed of one first cell of an activation cell and one or more second cells of an activation cell or a deactivation cell,
A first transmission timing group composed of the first cell and the second cell having the same uplink transmission timing as the first cell; and the second cell having a transmission timing different from the transmission timing of the first cell. Grouped into a second transmission timing group consisting of
The mobile station apparatus receives an activation instruction message for the cell of the second transmission timing group from the base station apparatus, and starts downlink reception of the second cell specified by the activation instruction message Calculating the transmission timing of the second transmission timing group from the transmission timing and downlink reception timing of the first cell, and setting the transmission timing for the cells of the second transmission timing group, A wireless communication method comprising at least a step of starting uplink transmission of two cells. A mobile station apparatus that performs uplink transmission to the base station apparatus via the plurality of cells when a plurality of cells are allocated from the base station apparatus and one transmission timing timer for uplink transmission timing management is operating An integrated circuit to be applied,
The plurality of cells are composed of one first cell and one or more second cells,
Means for receiving a first activation instruction message or a second activation instruction message from the base station device, and the second activation instruction message when receiving the first activation instruction message, the second activation instruction message Means for initiating downlink reception and uplink transmission for the cell, and when receiving the second activation instruction message, downlink reception for the second cell indicated by the second activation instruction message Integrated circuit having means for starting only Only when a plurality of cells are allocated from the base station apparatus and one transmission timing timer for uplink transmission timing management is operating, the mobile station apparatus performs uplink transmission to the base station apparatus via the plurality of cells. An integrated circuit to be applied,
The plurality of cells are always composed of one first cell of an activation cell and one or more second cells of an activation cell or a deactivation cell,
The first cell and the second cell are different from the first transmission timing group composed of the second cell having the same uplink transmission timing as the first cell and the uplink transmission timing of the first cell. Grouped into a second transmission timing group composed of the second cell of uplink transmission timing,
Means for receiving an activation instruction message from the base station device, and transmission timing information for the second transmission timing group to which the second cell instructed to activate by the activation instruction message belongs is not acquired An integrated circuit comprising means for starting an uplink transmission prohibition timer for the second transmission timing group. Only when a plurality of cells are allocated from the base station apparatus and one transmission timing timer for uplink transmission timing management is operating, the mobile station apparatus performs uplink transmission to the base station apparatus via the plurality of cells. An integrated circuit to be applied,
The plurality of cells are always composed of one first cell of an activation cell and one or more second cells of an activation cell or a deactivation cell,
A first transmission timing group composed of the first cell and the second cell having the same uplink transmission timing as the first cell; and the second cell having a transmission timing different from the transmission timing of the first cell. Grouped into a second transmission timing group consisting of
Means for receiving an activation instruction message for the cell of the second transmission timing group from the base station apparatus, means for starting downlink reception of the second cell specified by the activation instruction message, and downlink reception timing Means for calculating the transmission timing of the second transmission timing group based on the above, and means for starting uplink transmission of the second cell after setting the transmission timing for the cells of the second transmission timing group An integrated circuit comprising: