WO2011052312A1 - 無線通信システム、基地局装置、移動局装置、無線通信方法、移動局装置の制御プログラム、基地局装置および移動局装置の集積回路 - Google Patents

無線通信システム、基地局装置、移動局装置、無線通信方法、移動局装置の制御プログラム、基地局装置および移動局装置の集積回路 Download PDF

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Publication number
WO2011052312A1
WO2011052312A1 PCT/JP2010/066326 JP2010066326W WO2011052312A1 WO 2011052312 A1 WO2011052312 A1 WO 2011052312A1 JP 2010066326 W JP2010066326 W JP 2010066326W WO 2011052312 A1 WO2011052312 A1 WO 2011052312A1
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WO
WIPO (PCT)
Prior art keywords
station apparatus
mobile station
component carrier
uplink component
base station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2010/066326
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English (en)
French (fr)
Japanese (ja)
Inventor
翔一 鈴木
山田　昇平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CA2777892A priority Critical patent/CA2777892C/en
Priority to BR112012010145-5A priority patent/BR112012010145B1/pt
Priority to AU2010312811A priority patent/AU2010312811B2/en
Priority to EP10826446.6A priority patent/EP2496025A4/en
Priority to CN2010800484781A priority patent/CN102598806A/zh
Priority to EP12006670.9A priority patent/EP2541999B1/en
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of WO2011052312A1 publication Critical patent/WO2011052312A1/ja
Priority to ZA2012/02878A priority patent/ZA201202878B/en
Priority to US13/458,177 priority patent/US9014031B2/en
Anticipated expiration legal-status Critical
Priority to US14/656,165 priority patent/US10560924B2/en
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/36—Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/365—Power headroom reporting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to a technique in which a mobile station apparatus transmits a power reserve value (power headroom), which is a difference between maximum transmission power and predetermined power estimated for uplink transmission, to a base station apparatus.
  • a power reserve value power headroom
  • LTE Long Term Evolution
  • EUTRA Evolved Universal Terrestrial Radio Access
  • TPC Transmission Power Control
  • An equation used to determine a transmission power value of an uplink shared channel (Physical Uplink Shared CHannel; PUSCH) used for uplink data communication defined in Chapter 5 of Non-Patent Document 1 is shown.
  • P PUSCH (i) indicates the transmission power value of PUSCH in the i-th subframe.
  • min ⁇ X, Y ⁇ is a function for selecting the minimum value of X and Y.
  • PO_PUSCH is the transmission power that is the basis of PUSCH, and is a value specified from an upper layer.
  • M PUSCH indicates the number of physical resource blocks (Physical Resource Blocks; PRBs) that are units of radio resource allocation used for PUSCH transmission, and the transmission power increases as the number of physical resource blocks used for PUSCH transmission increases. Indicates that it will grow.
  • PRBs Physical Resource Blocks
  • PL indicates a path loss
  • ⁇ is a coefficient by which the path loss is multiplied, and is specified by an upper layer.
  • ⁇ TF is an offset value according to a modulation scheme or the like
  • f is an offset value (transmission power control value by closed loop or open loop) calculated from a TPC command transmitted by downlink control information (DCI).
  • DCI downlink control information
  • PCMAX is a maximum transmission power value, which may be a physical maximum transmission power or may be specified from an upper layer.
  • P req is a PUSCH transmission power value calculated to satisfy a predetermined communication quality.
  • the mobile station apparatus uses a power headroom (Power Headroom).
  • PH power headroom
  • a value obtained by subtracting a predetermined power value estimated for uplink transmission from the maximum transmission power value of the terminal is notified to the base station apparatus.
  • the power headroom is defined by equation (2) in Chapter 5 of Non-Patent Document 1.
  • the power headroom is rounded to a value of ⁇ 23 dB to 40 dB in 1 dB increments, notified from the physical layer to the upper layer, and transmitted to the base station apparatus.
  • a positive power headroom indicates that the mobile station device has sufficient transmission power
  • a negative power headroom indicates that the mobile station device requires transmission power exceeding the maximum transmission power value from the base station. However, this shows that the terminal is transmitting at the maximum transmission power.
  • the base station apparatus determines the bandwidth that the mobile station apparatus allocates to transmit the PUSCH, the PUSCH modulation scheme, and the like.
  • an expression used to determine the transmission power value of an uplink control channel (Physical Uplink Control CHannel; PUCCH) used for communication of uplink control information defined in Chapter 5 of Non-Patent Document 1 is as follows. Show.
  • P PUCCH (i) indicates the transmission power value of PUCCH in the i-th subframe.
  • PO_PUCCH is the transmission power that is the basis of PUCCH, and is a value specified from an upper layer.
  • h (n CQI , n HARQ ) is a value calculated by the number of bits transmitted by PUCCH and the format of PUCCH, n CQI indicates channel quality information (Channel Quality Information; CQI) transmitted by PUCCH, and n HARQ is This indicates the number of HARQ bits (ACK / NACK) transmitted on the PUCCH.
  • ⁇ F_PUCCH is an offset value designated from an upper layer for each PUCCH format, and g is an offset value (transmission power control by closed loop) calculated from a TPC command transmitted by downlink control information (DCI). Value).
  • P req_PUCCH is a transmission power value of PUCCH calculated to satisfy a predetermined communication quality. In LTE, power headroom for PUCCH is not transmitted.
  • the PUCCH format includes PUCCH format 1, PUCCH format 1a, PUCCH format 1b, PUCCH format 2, PUCCH format 2a, and PUCCH format 2b.
  • PUCCH format 1 transmits a scheduling request (Scheduling Request; SR) by on-off keying.
  • PUCCH format 1a is a format used when transmitting 1 HARQ bit with BPSK
  • PUCCH format 1b is a format used when transmitting 2 HARQ bits with QPSK. is there.
  • PUCCH format 2 is a channel quality information (Channel Quality Information), or when there is HARQ bit, channel quality information and HARQ bit are jointly coded (joint coding), and used for transmission.
  • PUCCH format 2a is a channel 1 bit HARQ bit using quality information and differential binary phase shift keying (Differential Phase Shift Keying; DBPSK) for uplink reference signal (Uplink Reference Signal; UL RS) time-multiplexed to PUCCH format 2a
  • DBPSK differential binary phase shift keying
  • uplink reference signal Uplink Reference Signal
  • UL RS Uplink Reference Signal
  • the PUCCH format 2b is a format used for transmission.
  • the PUCCH format 2b includes channel quality information and an uplink reference signal that is time-multiplexed with the PUCCH format 2b.
  • (DQPSK) is used to transmit 2 HARQ bits.
  • Non-Patent Document 2 Chapter 5 stipulates control of power headroom transmission.
  • the mobile station apparatus controls transmission of the power headroom using two timers (periodicPHR-Timer and prohibitPHR-Timer) notified from the base station apparatus and one value dl-PathlossChange.
  • the mobile station apparatus determines the transmission of the power headroom when at least one of the following items is true. In other words, when prohibitPHR-Timer is finished, and when the path loss changes more than dl-PathlossChange [dB] after transmitting power headroom with uplink radio resource (PUSCH) as initial transmission, periodicPHR-Timer is finished. In this case, the power headroom transmission function is set or reset by the upper layer, and the power headroom cannot be transmitted.
  • PUSCH uplink radio resource
  • the mobile station apparatus At the timing when the mobile station apparatus is assigned the uplink radio resource (PUSCH) used for initial transmission, it is determined to transmit power headroom, and further, it is determined to transmit power headroom from the priority of the data signal In the case, the power headroom is obtained in the physical layer, and the power headroom is transmitted. Also, the periodicPHR-Timer and the prohibitPHR-Timer are started or restarted.
  • PUSCH uplink radio resource
  • LTE-A Long ⁇ Term Evolution-Advanced
  • A-EUTRA Advanced Evolved Universal Terrestrial Radio
  • LTE-A uses a plurality of frequency bands having the same channel structure as LTE (hereinafter, referred to as “carrier element (Carrier—Component; CC)” or “component carrier (Component—Carrier; CC))”.
  • carrier element Carrier—Component; CC
  • Component carrier Component—Carrier; CC
  • PBCH, PDCCH, PDSCH, PMCH, PCFICH, and PHICH are transmitted for each downlink carrier element, and PUSCH, PUCCH, and PRACH are allocated to each uplink carrier element.
  • the base station apparatus and the plurality of mobile station apparatuses use PUCCH, PUSCH, PDCCH, PDSCH, etc., a plurality of carrier elements, a plurality of data information and a plurality of control. This is a technique for simultaneously transmitting and receiving information (see Chapter 5 of Non-Patent Document 3).
  • the base station apparatus and the mobile station apparatus perform radio communication using a set of uplink carrier elements and downlink carrier elements, the base station apparatus transmits a plurality of uplink carrier elements to the mobile station apparatus. It is not disclosed how to control power headroom transmission when downlink carrier elements are assigned.
  • the frequency band to which the carrier elements that perform frequency band aggregation belong, and the configuration of the transmission antennas and power amplifiers (Power Amplifiers PA) of the mobile station device (for example, transmit signals of all uplink carrier elements with one transmission antenna) Depending on whether the signal is transmitted using a different transmission antenna for each group of uplink carrier elements or the like, an efficient method for controlling transmission of power headroom differs.
  • the present invention has been made in view of the above points, and efficient transmission of power headroom according to the frequency band to which the carrier element that performs frequency band aggregation belongs and the configuration of the transmission antenna and power amplifier of the mobile station apparatus. It is an object of the present invention to provide a radio communication system, a base station apparatus, a mobile station apparatus, a radio communication method, a mobile station apparatus control program, a base station apparatus, and an integrated circuit of the mobile station apparatus.
  • the radio communication system of the present invention is a radio communication system in which a mobile station device transmits a power reserve value for each uplink component carrier to a base station device, wherein the base station device The mobile station apparatus is notified of a plurality of uplink component carriers that trigger the reporting of the surplus value, and the mobile station apparatus reports the power surplus values in the plurality of uplink component carriers when a predetermined condition is satisfied. It is characterized by triggering.
  • the mobile station apparatus triggers transmission of a power surplus value, and is triggered when uplink radio resources for initial transmission are allocated. And calculating the power reserve values of the plurality of uplink component carriers, and transmitting the calculated power reserve values of the plurality of uplink component carriers using the allocated uplink radio resources for initial transmission. .
  • the base station device sets a plurality of downlink component carriers used for wireless communication with the mobile station device in the mobile station device, and the predetermined condition is: It is characterized in that a path loss value in at least one downlink component carrier among a plurality of downlink component carriers set in the base station apparatus changes by a predetermined value or more.
  • the base station apparatus sets a plurality of downlink component carriers used for radio communication with the mobile station apparatus in the mobile station apparatus, and is used for the radio communication.
  • One specific downlink ink component carrier among a plurality of downlink component carriers is set in the mobile station apparatus, and the predetermined condition is a path loss value in one specific downlink component carrier set in the base station apparatus. Is characterized in that it changes by a predetermined value or more.
  • the base station device sets one first timer (prohibitPHR-Timer) in the mobile station device, and the predetermined condition is further determined by the base station device. This is characterized in that the first timer (prohibitPHR-Timer), which is set to one by (1), has expired.
  • the base station apparatus sets one second timer (periodicPHR-Timer) in the mobile station apparatus, and the predetermined condition is determined by the base station apparatus. It is characterized in that the second timer (periodicPHR-Timer) that is set to only one expires.
  • the mobile station apparatus transmits the first timer (prohibitPHR-Timer) and the second timer when transmitting power reserve values of the plurality of uplink component carriers.
  • the timer (periodicPHR-Timer) is started or restarted.
  • the predetermined condition is that setting or resetting is performed for the reporting function of the power surplus value.
  • the setting or resetting of the reporting function of the power reserve value is not used to disable the reporting function.
  • the mobile station apparatus in the radio communication system in which the mobile station apparatus transmits a power reserve value for each uplink component carrier to the base station apparatus, includes a first uplink.
  • the power reserve value in the first uplink component carrier is calculated using the resource amount of the predetermined PUSCH, and the base station
  • the apparatus is characterized by determining that the power reserve value of the first uplink component carrier is calculated by the mobile station apparatus using a predetermined PUSCH resource amount.
  • the first uplink component carrier is transmitted to the first uplink component carrier by the base station apparatus.
  • the mobile station apparatus uses the PUSCH resource amount allocated to the first uplink component carrier to reserve the power reserve of the first uplink component carrier.
  • the base station apparatus calculates the power surplus value of the first uplink component carrier using the PUSCH resource amount allocated to the first uplink component carrier by the mobile station apparatus. It is characterized by judging.
  • the predetermined PUSCH resource amount is a PUSCH resource amount allocated by the base station apparatus to a second uplink component carrier that transmits the power reserve value. It is characterized by being.
  • the resource amount of the predetermined PUSCH is one physical resource block, and the physical resource block is a unit for allocating PUSCH to the mobile station apparatus. .
  • the mobile station apparatus in the wireless communication system in which the mobile station apparatus transmits a power reserve value for each uplink component carrier to the base station apparatus, the mobile station apparatus includes the uplink component carrier. And the base station apparatus determines that the power margin value is calculated by the mobile station apparatus using a predetermined PUCCH format. .
  • the mobile station apparatus when transmits the power reserve value, when transmitting PUCCH on an uplink component carrier from which the power reserve value is calculated, The mobile station apparatus calculates a power reserve value in an uplink component carrier that transmits the PUCCH using a PUCCH format of the transmitted PUCCH, and the base station apparatus transmits an uplink component carrier that transmits the PUCCH. Is determined using the PUCCH format of the PUCCH transmitted on the uplink component carrier by the mobile station apparatus.
  • the mobile station apparatus in the wireless communication system in which the mobile station apparatus transmits a power reserve value for each uplink component carrier to the base station apparatus, the mobile station apparatus includes the uplink component carrier. And the base station apparatus determines that the power margin value is calculated by the mobile station apparatus using an offset value for a predetermined PUCCH format. It is characterized by doing.
  • the mobile station apparatus when transmits the power reserve value, when transmitting PUCCH on an uplink component carrier from which the power reserve value is calculated, The mobile station apparatus calculates a power reserve value in an uplink component carrier that transmits the PUCCH using an offset value with respect to the PUCCH format of the transmitted PUCCH, and the base station apparatus transmits an uplink in which the PUCCH is transmitted. It is characterized in that it is determined that a power reserve value in a link component carrier is calculated by using an offset value for a PUCCH format of a PUCCH transmitted by the mobile station apparatus on the uplink component carrier.
  • the offset value is specified by the base station apparatus for each PUCCH format.
  • the offset value is calculated from the number of bits of uplink control information transmitted on the PUCCH.
  • the offset value for the predetermined PUCCH format is an offset value for the PUCCH format 1a used for transmitting one HARQ bit.
  • the base station apparatus of this invention is a base station apparatus which receives the power reserve value for every uplink component carrier which a mobile station apparatus transmits, The said mobile station apparatus triggers the report of the said power reserve value A plurality of uplink component carriers to be notified to the mobile station apparatus.
  • the base station apparatus that receives the power reserve value for each uplink component carrier transmitted by the mobile station apparatus sets the second power reserve value in the first uplink component carrier to the second value.
  • the base station apparatus When receiving with the uplink component carrier, it is determined that the power reserve value of the first uplink component carrier is calculated by the mobile station apparatus using a predetermined PUSCH resource amount. .
  • the received power reserve value is predetermined by the mobile station apparatus. It is judged that it was calculated using the PUCCH format.
  • the received power reserve value is predetermined by the mobile station apparatus. It is characterized in that it is determined using an offset value for the PUCCH format.
  • the mobile station apparatus of the present invention transmits a power reserve value for each uplink component carrier to the base station apparatus, and satisfies a predetermined condition in a plurality of uplink component carriers. It is characterized by triggering the report of the power surplus value.
  • the power reserve value in the first uplink component carrier is set to the second uplink component carrier.
  • the power surplus value in the first uplink component carrier is calculated using a predetermined PUSCH resource amount.
  • the power reserve value in the uplink component carrier is expressed in a predetermined PUCCH format. It is characterized by using and calculating.
  • the power reserve value in the uplink component carrier is set to a predetermined PUCCH format. It is characterized by calculating using an offset value.
  • the radio communication method of the present invention is the radio communication method used in the base station apparatus that receives the power reserve value for each uplink component carrier transmitted by the mobile station apparatus, wherein the mobile station apparatus The mobile station apparatus is notified of a plurality of uplink component carriers that trigger reporting of a surplus value.
  • the radio communication method of the present invention is a radio communication method used in a base station apparatus that receives a power reserve value for each uplink component carrier transmitted by a mobile station apparatus, in the first uplink component carrier.
  • the power reserve value is received by the second uplink component carrier, it is determined that the power reserve value of the first uplink component carrier is calculated by the mobile station apparatus using a predetermined PUSCH resource amount. It is characterized by doing.
  • the received power reserve value is: The mobile station apparatus determines that the mobile station apparatus has calculated using a predetermined PUCCH format.
  • the received power reserve value is: It is determined that the mobile station apparatus calculates the offset value for a predetermined PUCCH format.
  • a predetermined condition is satisfied in the wireless communication method used in the mobile station device that transmits the power reserve value for each uplink component carrier to the base station device. It is characterized by triggering the report of the power reserve value in the uplink component carrier.
  • the radio communication method of the present invention is a radio communication method used in a mobile station apparatus that transmits a power reserve value for each uplink component carrier to a base station apparatus, and a power reserve in a first uplink component carrier.
  • the power reserve value in the said 1st uplink component carrier is calculated using the resource amount of predetermined
  • the radio communication method of the present invention is a radio communication method used in a mobile station apparatus that transmits a power reserve value for each uplink component carrier to a base station apparatus, wherein the power reserve value in the uplink component carrier is calculated. The calculation is performed using a predetermined PUCCH format.
  • the radio communication method of the present invention is a radio communication method used in a mobile station apparatus that transmits a power reserve value for each uplink component carrier to a base station apparatus, wherein the power reserve value in the uplink component carrier is calculated. , Using an offset value for a predetermined PUCCH format.
  • control program for the mobile station apparatus of the present invention is a control program used for a mobile station apparatus that transmits a power reserve value for each uplink component carrier to the base station apparatus when a predetermined condition is satisfied.
  • the process for triggering the reporting of the power reserve value in a plurality of uplink component carriers is characterized as a computer readable and executable command.
  • a control program for a mobile station apparatus is a control program used for a mobile station apparatus that transmits a power reserve value for each uplink component carrier to a base station apparatus.
  • a process of calculating the power reserve value on the first uplink component carrier using a predetermined PUSCH resource amount is readable by the computer It is characterized by being commanded to be executable.
  • control program for a mobile station apparatus of the present invention is a control program used for a mobile station apparatus that transmits a power reserve value for each uplink component carrier to a base station apparatus.
  • the process of calculating the value using a predetermined PUCCH format is characterized by being converted into a computer readable and executable command.
  • control program for a mobile station apparatus of the present invention is a control program used for a mobile station apparatus that transmits a power reserve value for each uplink component carrier to a base station apparatus.
  • the process of calculating a value using an offset value for a predetermined PUCCH format is characterized by being converted into a computer-readable and executable command.
  • the integrated circuit of the base station apparatus of the present invention is an integrated circuit used in a base station apparatus that receives a power reserve value for each uplink component carrier transmitted by the mobile station apparatus, wherein the mobile station apparatus includes: The mobile station apparatus has a step of notifying the mobile station apparatus of a plurality of uplink component carriers that trigger reporting of the power reserve value.
  • the integrated circuit of the base station apparatus of the present invention is the first uplink component in the integrated circuit used in the base station apparatus that receives the power reserve value for each uplink component carrier transmitted by the mobile station apparatus.
  • the power surplus value in the carrier is received by the second uplink component carrier
  • the power surplus value of the first uplink component carrier is calculated by the mobile station apparatus using a predetermined PUSCH resource amount. It is characterized by having a step of judging that
  • the integrated circuit of the base station apparatus of the present invention is the received power reserve value in the integrated circuit used in the base station apparatus that receives the power reserve value for each uplink component carrier transmitted by the mobile station apparatus. Is determined by the mobile station apparatus using a predetermined PUCCH format.
  • the integrated circuit of the base station apparatus is the integrated circuit used in the base station apparatus that receives the power reserve value for each uplink component carrier transmitted by the mobile station apparatus, and the received power reserve value. Comprises a step of determining that the mobile station apparatus has been calculated using an offset value for a predetermined PUCCH format.
  • the integrated circuit of the mobile station apparatus of the present invention when the predetermined condition is satisfied in the integrated circuit used in the mobile station apparatus that transmits the power reserve value for each uplink component carrier to the base station apparatus. , Having a step of triggering reporting of a power reserve value in a plurality of uplink component carriers.
  • the integrated circuit of the mobile station apparatus of this invention is an integrated circuit used for the mobile station apparatus which transmits the power reserve value for every uplink component carrier to a base station apparatus, in 1st uplink component carrier.
  • the method includes calculating a power reserve value on the first uplink component carrier by using a predetermined PUSCH resource amount. Yes.
  • the integrated circuit of the mobile station apparatus of the present invention is an integrated circuit used in a mobile station apparatus that transmits a power reserve value for each uplink component carrier to a base station apparatus, and has a power reserve in the uplink component carrier.
  • the method has a step of calculating a value using a predetermined PUCCH format.
  • the integrated circuit of the mobile station apparatus of the present invention is an integrated circuit used in a mobile station apparatus that transmits a power reserve value for each uplink component carrier to a base station apparatus, and a power reserve in the uplink component carrier.
  • the method includes a step of calculating a value using an offset value for a predetermined PUCCH format.
  • the mobile station apparatus performs efficient control of power headroom transmission according to the frequency band to which the carrier element performing frequency band aggregation belongs and the configuration of the transmission antenna and power amplifier of the mobile station apparatus. be able to.
  • LTE wireless access methods and wireless networks for cellular mobile communications
  • LTE- wireless access methods and wireless networks
  • 3GPP 3rd Generation Partnership Project
  • OFDM orthogonal frequency division multiplexing
  • SC-FDMA Single-Carrier Frequency Division Multiple Access
  • a synchronization channel (SynchronizationchronCHannel; nelSCH), a broadcast channel (Physical Broadcast CHannel; PBCH), a downlink control channel (Physical Downlink Control CHannel; PDCCH), a downlink shared channel (Physical Downlink Shared CHannel PDSCH), multicast channel (Physical Multicast CHannel; PMCH), control format indicator channel (Physical Control Format Indicator Indicator CHANnel; PCFICH), HARQ indicator channel (Physical Hybrid automatic request repeater CHANnel; PHICH).
  • an uplink shared channel (PUSCH), an uplink control channel (PhysicalPhysUplink Control CHannel; PUCCH), and a random access channel (Physical Random Access CHannel; PRACH) are allocated.
  • FIG. 6 is a conceptual diagram of the wireless communication system of the present invention.
  • the radio communication system includes mobile station apparatuses 1A to 1C and a base station apparatus 3.
  • the mobile station apparatuses 1A to 1C and the base station apparatus 3 perform communication using frequency band aggregation described later.
  • FIG. 6 shows a synchronization channel (SCH), a downlink pilot channel (or “Downlink Reference Signal (Downlink Reference Signal)” in radio communication (downlink) from the base station apparatus 3 to the mobile station apparatuses 1A to 1C.
  • SCH synchronization channel
  • Downlink Reference Signal Downlink Reference Signal
  • DL RS Physical Broadcast CHannel
  • PBCH Physical Broadcast CHannel
  • PDCCH Physical Downlink Control CHannel
  • PDSCH downlink shared channel
  • multicast channel Physical This indicates that a Multicast CHannel (PMCH), a control format indicator channel (Physical Control Format Indicator CHannel; PCFICH), and a HARQ indicator channel (Physical Hybrid ARQ Indicator CHannel; PHICH) are allocated.
  • PMCH Multicast CHannel
  • PCFICH Physical Control Format Indicator CHannel
  • HARQ indicator channel Physical Hybrid ARQ Indicator CHannel; PHICH
  • FIG. 6 is also referred to as an uplink pilot channel (or “uplink reference signal (Uplink Reference Signal; UL reference RS)” in wireless communication (uplink) from the mobile station apparatuses 1A to 1C to the base station apparatus 3. )), Uplink control channel (Physical Uplink Control CHannel; PUCCH), uplink shared channel (Physical Uplink Shared CHannel; PUSCH), and random access channel (Physical Random Access Channel; PRACH).
  • the mobile station apparatuses 1A to 1C are referred to as the mobile station apparatus 1.
  • FIG. 7 is a diagram showing an example of the frequency band aggregation processing of the present invention.
  • the horizontal axis represents the frequency domain
  • the vertical axis represents the time domain.
  • the downlink subframe D1 includes four carrier elements (DCC-1; Downlink Component Carrier-1, DCC-2, DCC-3, and DCC-4) having a bandwidth of 20 MHz. It is composed of subframes. In each subframe of the downlink carrier element, a region where the PDCCH indicated by the hatched region is arranged and a region where the PDSCH indicated by the non-hatched region is time-multiplexed. For example, in a certain downlink subframe, the base station apparatus 3 arranges a signal on the PDSCH of one or a plurality of downlink carrier elements among four downlink carrier elements and transmits the signal to the mobile station apparatus 1.
  • the uplink subframe U1 is composed of two carrier elements (UCC-1; Uplink Component B Carrier-1, UCC-2) having a bandwidth of 20 MHz.
  • UCC-1 Uplink Component B Carrier-1
  • UCC-2 Uplink Component B Carrier-1
  • an area where the PUCCH indicated by the hatched area is arranged, and an area where the PUSCH indicated by the left hatched area is arranged are arranged.
  • the mobile station apparatus 1 arranges a signal on the PUSCH of one or more uplink carrier elements of two uplink carrier elements in a certain uplink subframe, and transmits the signal to the base station apparatus 3.
  • FIG. 8 is a diagram showing an example of the configuration of the carrier element of the present invention.
  • the horizontal axis indicates the frequency domain
  • DCC-1, DCC-2, DCC-3, DCC-4, UCC-1 and UCC-2 are composed of continuous frequency bands in the frequency domain.
  • the mobile station apparatus 1 can transmit / receive the signal of the some downlink carrier element comprised from the continuous frequency band, and the signal of several uplink carrier element using one antenna.
  • FIG. 9 is a schematic diagram illustrating an example of a configuration of a downlink radio frame according to the present invention.
  • FIG. 9 shows a configuration of a radio frame in a certain downlink carrier element.
  • the horizontal axis is the time domain
  • the vertical axis is the frequency domain.
  • the radio frame of the downlink carrier element is composed of a plurality of downlink physical resource block (PRB) pairs (for example, an area surrounded by a broken line in FIG. 9).
  • PRB downlink physical resource block
  • One downlink physical resource block pair is composed of two downlink physical resource blocks (PRB bandwidth ⁇ slot) that are continuous in the time domain.
  • One downlink physical resource block (unit surrounded by a thick line in FIG. 9) is composed of 12 subcarriers (15 kHz) in the frequency domain, and 7 OFDM symbols (71 ⁇ s) in the time domain. Consists of
  • a slot (0.5 ms) composed of 7 OFDM (Orthogonal Frequency Division) Multiplexing (71 ⁇ s), a subframe composed of 2 slots (1 ms), and 10 subframes
  • a radio frame (10 ms) to be configured.
  • a plurality of downlink physical resource blocks are arranged according to the bandwidth of the downlink carrier element.
  • a unit composed of one subcarrier and one OFDM symbol is referred to as a downlink resource element.
  • a PDCCH In each downlink subframe, for example, a PDCCH, a PDSCH, and a downlink reference signal are allocated.
  • PDCCH will be described.
  • the PDCCH is arranged from the first OFDM symbol of the subframe (the area hatched with a left oblique line). Note that the number of OFDM symbols in which the PDCCH is arranged differs for each subframe.
  • downlink control information information used for communication control, which includes information formats such as downlink assignment (also referred to as DL assignment) and uplink grant (Uplink grant).
  • DCI Downlink (Control) Information;
  • the downlink assignment includes information indicating a modulation scheme for PDSCH, information indicating a coding scheme, information indicating radio resource allocation, information on HARQ (Hybrid Automatic Repeat Request), a TPC command, and the like.
  • the uplink grant includes information indicating a modulation scheme for PUSCH, information indicating a coding scheme, information indicating radio resource allocation, information regarding HARQ, a TPC command, and the like.
  • HARQ means that, for example, the mobile station device 1 (base station device 3) transmits a success / failure (ACK / NACK) of decoding of data information to the base station device 3 (mobile station device 1).
  • the base station apparatus 3 When the base station apparatus 3) cannot decode the data information due to an error (NACK), the base station apparatus 3 (mobile station apparatus 1) retransmits the signal and the mobile station apparatus 1 (base station apparatus 3) receives the signal again.
  • NACK an error
  • the PDSCH is arranged in an OFDM symbol (an area that is not hatched) other than the OFDM symbol in which the PDCCH of the subframe is arranged.
  • a data information (transport block; Transport Block) signal (referred to as a data signal) is arranged.
  • the radio resources of the PDSCH are allocated using downlink assignment and are arranged in the same downlink subframe as the PDCCH including this downlink assignment.
  • the downlink reference signal is not shown in FIG. 9 for simplicity of explanation, but the downlink reference signal is distributed and arranged in the frequency domain and the time domain.
  • FIG. 10 is a schematic diagram illustrating an example of a configuration of an uplink radio frame according to the present invention.
  • FIG. 10 shows a configuration of a radio frame in an uplink carrier element.
  • the horizontal axis is the time domain
  • the vertical axis is the frequency domain.
  • the radio frame of the uplink carrier element is composed of a plurality of uplink physical resource block pairs (for example, an area surrounded by a broken line in FIG. 10).
  • One uplink physical resource block pair is composed of two uplink physical resource blocks (PRB bandwidth ⁇ slot) that are continuous in the time domain.
  • One uplink physical resource block (unit surrounded by a thick line in FIG. 10) is composed of 12 subcarriers (15 kHz) in the frequency domain, and 7 SC-FDMA symbols ( 71 ⁇ s).
  • a slot (0.5 ms) composed of seven SC-FDMA (Single-Carrier Frequency Division Multiple Access) symbols (71 ⁇ s)
  • a subframe (1 ms) composed of two slots
  • a plurality of uplink physical resource blocks are arranged according to the bandwidth of the uplink carrier element.
  • a unit composed of one subcarrier and one SC-FDMA symbol is referred to as an uplink resource element.
  • the PUCCH is allocated to uplink physical resource block pairs (regions hatched with left diagonal lines) at both ends of the bandwidth of the uplink carrier element.
  • the PUCCH includes communication quality control such as channel quality information (Channel Quality Information) indicating downlink channel quality, scheduling request (Scheduling Request; SR) indicating a request for allocation of uplink radio resources, and ACK / NACK for the PDSCH.
  • the uplink control information (Uplink Control Information; IUCI) signal, which is information used for the transmission, is arranged.
  • the PUSCH is assigned to an uplink physical resource block pair (an area that is not hatched) other than the uplink physical resource block in which the PUCCH is arranged.
  • signals of uplink control information and data information (transport block; Transport Block) that is information other than the uplink control information are arranged.
  • the PUSCH radio resource is allocated using an uplink grant, and is allocated to an uplink subframe of a subframe after a predetermined time from a subframe that has received the PDCCH including the uplink grant.
  • the uplink reference signal is time-multiplexed with PUCCH and PUSCH, but detailed description is omitted for simplification of description.
  • FIG. 1 is a schematic block diagram showing the configuration of the base station apparatus 3 of the present invention.
  • the base station apparatus 3 includes an upper layer processing unit 101, a control unit 103, a receiving unit 105, a transmitting unit 107, and a transmission / reception antenna 109.
  • the upper layer processing unit 101 includes a radio resource control unit 1011 and a power headroom setting unit 1013.
  • the reception unit 105 includes a decoding unit 1051, a demodulation unit 1053, a demultiplexing unit 1055, and a wireless reception unit 1057.
  • the transmission unit 107 includes an encoding unit 1071, a modulation unit 1073, a multiplexing unit 1075, a radio transmission unit 1077, and a downlink reference signal generation unit 1079.
  • the base station apparatus 3 performs transmission of a plurality of downlink carrier elements and reception of a plurality of uplink carrier elements by one transmission / reception antenna 109.
  • the upper layer processing unit 101 outputs data information for each downlink carrier element to the transmission unit 107.
  • the upper layer processing unit 101 performs processing of a packet data integration protocol (Packet Data Convergence Protocol; PDCP) layer, a radio link control (Radio Link Control; RLC) layer, and a radio resource control (Radio Resource Control; RRC) layer.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • RRC Radio Resource Control
  • the radio resource control unit 1011 included in the upper layer processing unit 101 transmits or receives the number of downlink carrier elements and uplink carrier elements that can be used by the base station apparatus 3 for radio communication, and the mobile station apparatus 1 simultaneously.
  • a plurality of uplink carrier elements and downlink carrier elements are allocated to the mobile station apparatus 1 in accordance with the number of downlink carrier elements and uplink carrier elements that can be used.
  • the radio resource control unit 1011 generates information acquired in each channel of each downlink carrier element or obtains it from an upper node and outputs it to the transmission unit 107. Also, the radio resource control unit 1011 allocates, to the mobile station apparatus 1, radio resources in which the mobile station apparatus 1 places PUSCH (data information) from among the radio resources of the uplink carrier elements allocated to the mobile station apparatus 1. Also, the radio resource control unit 1011 determines a radio resource in which PDSCH (data information) is arranged from among the radio resources of the downlink carrier element. The radio resource control unit 1011 generates a downlink assignment and an uplink grant indicating the radio resource allocation, and transmits the downlink assignment and the uplink grant to the mobile station device 1 via the transmission unit 107.
  • the radio resource control unit 1011 controls the amount of PUSCH radio resources allocated to the mobile station apparatus 1 based on the power surplus value (power headroom) for the PUSCH received from the mobile station apparatus 1.
  • the power headroom for PUSCH in the first to fourth embodiments is simply referred to as power headroom.
  • the base station device 3 determines that the transmission power of the mobile station device 1 has a margin, and the mobile station device 1
  • the radio resource for PUSCH transmission is allocated and the power headroom received from the mobile station apparatus 1 is negative, it is determined that the mobile station apparatus 1 is requested to transmit power exceeding the maximum transmission power value of the mobile station apparatus 1.
  • the mobile station device 1 allocates less radio resources for PUSCH transmission.
  • the radio resource control unit 1011 receives the uplink control information (ACK / NACK, channel quality information, scheduling request) notified from the mobile station apparatus 1 on the PUCCH, the buffer status notified from the mobile station apparatus 1, and the radio Based on various setting information of each mobile station apparatus 1 set by the resource control unit 1011, control information is generated to control the receiving unit 105 and the transmitting unit 107 and output to the control unit 103.
  • uplink control information ACK / NACK, channel quality information, scheduling request
  • the power headroom setting unit 1013 includes a downlink carrier element and an uplink carrier for monitoring path loss in order to control periodicPHR-Timer, prohibitPHR-Timer, dl-PathlossChange, and power headroom for each mobile station apparatus 1.
  • a maximum transmission power value for each element is set, information regarding the setting is generated, and transmitted to the mobile station apparatus 1 via the transmission unit 107.
  • the maximum transmission power value is a maximum power value that can be used when the mobile station apparatus 1 transmits an uplink channel. Further, the power headroom setting unit 1013 can also set the mobile station apparatus 1 not to transmit the power headroom for each uplink carrier element.
  • the control unit 103 generates a control signal for controlling the receiving unit 105 and the transmitting unit 107 based on the control information from the higher layer processing unit 101. Control unit 103 outputs the generated control signal to receiving unit 105 and transmitting unit 107 to control receiving unit 105 and transmitting unit 107.
  • the receiving unit 105 separates, demodulates, and decodes the received signal received from the mobile station apparatus 1 via the transmission / reception antenna 109 according to the control signal input from the control unit 103, and outputs the decoded information to the upper layer processing unit 101.
  • the radio reception unit 1057 converts the signal of each uplink carrier element received via the transmission / reception antenna 109 to an intermediate frequency (down-conversion), removes unnecessary frequency components, and maintains the signal level appropriately. Then, the amplification level is controlled, quadrature demodulation is performed based on the in-phase component and the quadrature component of the received signal, and the quadrature demodulated analog signal is converted into a digital signal.
  • Radio receiving section 1057 removes a portion corresponding to a guard interval (Guard Interval; GI) from the converted digital signal. Radio receiving section 1057 performs fast Fourier transform (FFT Fourier Transform; FFT) on the signal from which the guard interval is removed, extracts a frequency domain signal, and outputs the signal to demultiplexing section 1055.
  • FFT fast Fourier transform
  • the demultiplexing unit 1055 demultiplexes the signal input from the radio receiving unit 1057 into signals such as PUCCH, PUSCH, and uplink reference signal for each uplink carrier element. This separation is performed based on radio resource allocation information that is determined in advance by the base station device 3 and notified to each mobile station device 1. Further, the demultiplexing unit 1055 obtains an estimated value of the propagation path from the separated uplink reference signal, and compensates the propagation path of the uplink control channel and the uplink shared channel.
  • the demodulation unit 1053 performs inverse discrete Fourier transform (Inverse Discrete Fourier Transform; IDFT) on the PUSCH, acquires modulation symbols, and performs binary phase shift keying (Binary Phase Shift Keying; BPSK on each of the PUCCH and PUSCH modulation symbols. )
  • IDFT inverse discrete Fourier transform
  • BPSK Binary Phase Shift Keying
  • QPSK Quadrature Phase Shift Keying
  • 16QAM 16-value quadrature amplitude modulation
  • 64QAM 64-value quadrature amplitude modulation
  • the base station device 3 demodulates the received signal using the modulation scheme notified in advance to each mobile station device 1 by an uplink grant.
  • the decoding unit 1051 encodes the demodulated PUCCH and PUSCH encoded bits in a predetermined encoding scheme, or a code that the base station apparatus 3 notifies the mobile station apparatus 1 in advance with an uplink grant.
  • the decoding is performed at the conversion rate, and the decoded data information and the uplink control information are output to the upper layer processing unit 101.
  • the transmission unit 107 generates a downlink reference signal according to the control signal input from the control unit 103, encodes and modulates the data information and the downlink control information input from the higher layer processing unit 101, PDCCH, The PDSCH and the downlink reference signal are multiplexed, and the signal is transmitted to the mobile station device 1 via the transmission / reception antenna 109.
  • the encoding unit 1071 performs encoding such as turbo encoding, convolutional encoding, and block encoding on the downlink control information and data information of each downlink carrier element input from the higher layer processing unit 101.
  • Modulation section 1073 modulates the encoded bits with a modulation scheme such as QPSK, 16QAM, or 64QAM.
  • the downlink reference signal generation unit 1079 obtains a sequence known by the mobile station apparatus 1 as a downlink reference signal, which is obtained according to a predetermined rule based on a cell identifier (Cell ID) for identifying the base station apparatus 3 or the like. Generate.
  • the multiplexing unit 1075 multiplexes each modulated channel and the generated downlink reference signal.
  • the radio transmission unit 1077 performs inverse fast Fourier transform (Inverse Fast Fourier Transform; IFFT) on the multiplexed modulation symbols, modulates the OFDM scheme, adds a guard interval to the OFDM symbol that has been OFDM-modulated, and performs baseband digital Generate a signal, convert the baseband digital signal to an analog signal, generate in-phase and quadrature components of the intermediate frequency from the analog signal, remove excess frequency components for the intermediate frequency band, and increase the signal of the intermediate frequency The signal is converted (up-converted) into a frequency signal, an extra frequency component is removed, the power is amplified, and output to the transmitting / receiving antenna 109 for transmission.
  • IFFT inverse Fast Fourier Transform
  • FIG. 2 is a schematic block diagram showing the configuration of the mobile station apparatus 1 of the present invention.
  • the mobile station apparatus 1 includes an upper layer processing unit 201, a control unit 203, a reception unit 205, a transmission unit 207, a path loss measurement unit 209, and a transmission / reception antenna 211.
  • the upper layer processing unit 201 includes a radio resource control unit 2011, a transmission power control unit 2013, and a power headroom control unit 2015.
  • the reception unit 205 includes a decoding unit 2051, a demodulation unit 2053, a demultiplexing unit 2055, and a wireless reception unit 2057.
  • the transmission unit 207 includes an encoding unit 2071, a modulation unit 2073, a multiplexing unit 2075, a wireless transmission unit 2077, and an uplink reference signal generation unit 2079.
  • the mobile station apparatus 1 performs reception of a plurality of downlink carrier elements and transmission of a plurality of uplink carrier elements with one transmission / reception antenna 211.
  • the upper layer processing unit 201 outputs data information for each uplink carrier element generated by a user operation or the like to the transmission unit 207. Further, the upper layer processing unit 201 performs processing of the packet data integration protocol layer, the radio link control layer, and the radio resource control layer.
  • the radio resource control unit 2011 included in the higher layer processing unit 201 manages various setting information such as a downlink carrier element and an uplink carrier element to which the own apparatus is allocated. Also, the radio resource control unit 2011 generates information to be arranged in each channel of each uplink carrier element and outputs the information to the transmission unit 207 for each uplink carrier element.
  • the radio resource control unit 2011 includes the downlink control information (for example, downlink assignment and uplink grant) notified from the base station apparatus 3 through the PDCCH, and various setting information of the own apparatus managed by the radio resource control unit 2011. Based on this, control information is generated to control the reception unit 205 and the transmission unit 207, and is output to the control unit 203.
  • downlink control information for example, downlink assignment and uplink grant
  • the transmission power control unit 2013 included in the higher layer processing unit 201 includes a PUSCH modulation scheme and radio resource allocation notified by the downlink assignment, a TPC command, a path loss of a downlink carrier element input from the path loss measurement unit 209, The transmission power P req for satisfying a predetermined communication quality for each uplink carrier element in the base station apparatus 3 and the transmission power P of the PUSCH actually used by the mobile station apparatus 1 by the parameter notified from the base station apparatus 3 and the like.
  • PUSCH (i) is calculated based on the equation (1).
  • the transmission power of PUSCH can also be expressed as the transmission power of UL-SCH (Uplink Shared CHannel) arranged in PUSCH.
  • UL-SCH is a transport channel transmitted by PUSCH.
  • the transmission power control unit 2013 When the transmission power control unit 2013 is instructed to calculate the power headroom from the power headroom control unit 2015, the power heads of all the uplink carrier elements allocated from the base station apparatus 3 based on the equation (2) The room is calculated and transmitted to the base station apparatus 3 via the transmission unit 207.
  • M PUSCH when calculating the power headroom is the number of PUSCH transmission physical resource blocks assigned to each uplink carrier element at the transmission timing of the power headroom.
  • the power headroom calculated for each uplink carrier element is collectively configured as one MAC (Medium Access Control) CE (Control Element).
  • the power headroom control unit 2015 included in the higher layer processing unit 201 monitors a change in path loss of one downlink carrier element notified from the base station apparatus 3 or a downlink carrier element accessed first by the mobile station apparatus 1. Then, transmission of the power headroom is controlled using two timers (periodicPHR-Timer and prohibitPHR-Timer) notified from the base station apparatus 3 and one value dl-PathlossChange.
  • the mobile station apparatus 1 determines the transmission of the power headroom when it meets at least one of the items described below. Determining power headroom transmission is also referred to as triggering a power headroom report.
  • one PDL carrier element or mobile station notified from the base station apparatus 3 after transmitting the power headroom with the uplink radio resource (PUSCH) as the initial transmission after the prohibit PHR-Timer is completed.
  • the downlink carrier element accessed by the device 1 first, when the path loss changes by dl-PathlossChange [dB] or more, when the periodicPHR-Timer ends, the transmission function of the power headroom is set or reset by the upper layer, This is a case where the power headroom cannot be transmitted.
  • the mobile station apparatus 1 determines transmission of power headroom at the timing when the uplink radio resource (PUSCH) used for initial transmission is allocated, and further transmits the power headroom on the PUSCH based on the priority of the data signal. If so, the transmission power control unit 2013 is instructed to calculate the power headroom and output it to the transmission unit 207. Also, the periodicPHR-Timer and the prohibitPHR-Timer are started or restarted.
  • PUSCH uplink radio resource
  • the control unit 203 generates a control signal for controlling the reception unit 205 and the transmission unit 207 based on the control information from the higher layer processing unit 201.
  • Control unit 203 outputs the generated control signal to receiving unit 205 and transmitting unit 207 to control receiving unit 205 and transmitting unit 207.
  • the receiving unit 205 separates, demodulates, and decodes the received signal received from the base station apparatus 3 via the transmission / reception antenna 211 according to the control signal input from the control unit 203, and sends the decoded information to the upper layer processing unit 201. Output.
  • the radio reception unit 2057 converts the signal of each downlink carrier element received via each reception antenna into an intermediate frequency (down-conversion), removes unnecessary frequency components, and maintains the signal level appropriately. Then, the amplification level is controlled, quadrature demodulation is performed based on the in-phase component and the quadrature component of the received signal, and the quadrature demodulated analog signal is converted into a digital signal.
  • the wireless reception unit 2057 removes a portion corresponding to the guard interval from the converted digital signal, performs fast Fourier transform on the signal from which the guard interval is removed, and extracts a frequency domain signal.
  • the demultiplexing unit 2055 separates the extracted signal into PDCCH, PDSCH, and downlink reference signal for each downlink carrier element. This separation is performed based on radio resource allocation information notified by downlink assignment. Also, the demultiplexing unit 2055 obtains an estimated value of the propagation path from the separated downlink reference signal, and compensates for the propagation paths of the PDCCH and PDSCH. Also, the demultiplexing unit 2055 outputs the separated downlink reference signal to the path loss measuring unit 209.
  • the demodulation unit 2053 demodulates the PDCCH using the QPSK modulation method and outputs the result to the decoding unit 2051.
  • the decoding unit 2051 tries to decode the PDCCH, and outputs the decoded downlink control information to the higher layer processing unit 201 when the decoding is successful.
  • Demodulation section 2053 demodulates the PDSCH according to the modulation scheme notified by downlink assignment such as QPSK, 16QAM, 64QAM, etc., and outputs the result to decoding section 2051.
  • the decoding unit 2051 performs decoding on the coding rate notified by the downlink assignment, and outputs the decoded data information to the higher layer processing unit 201.
  • the path loss measurement unit 209 measures the path loss for each downlink carrier element from the downlink reference signal input from the demultiplexing unit 2055, and outputs the measured path loss to the higher layer processing unit 201.
  • the transmission unit 207 generates an uplink reference signal according to the control signal input from the control unit 203, encodes and modulates the data information input from the higher layer processing unit 201, and generates PUCCH, PUSCH, and the generated uplink
  • the link reference signal is multiplexed and transmitted to the base station apparatus 3 via the transmission / reception antenna 211.
  • the encoding unit 2071 performs encoding such as turbo encoding, convolutional encoding, and block encoding on the uplink control information and data information of each uplink carrier element input from the higher layer processing unit 201.
  • the modulation unit 2073 modulates the coded bits input from the coding unit 2071 using a modulation scheme such as BPSK, QPSK, 16QAM, or 64QAM.
  • the uplink reference signal generation unit 2079 generates, as an uplink reference signal, a sequence known by the base station device 3 that is obtained according to a predetermined rule based on a cell identifier for identifying the base station device 3 or the like.
  • the multiplexing unit 2075 rearranges the PUSCH modulation symbols in parallel and then performs a discrete Fourier transform (DFT) to multiplex the PUCCH and PUSCH signals and the generated uplink reference signal.
  • DFT discrete Fourier transform
  • the radio transmission unit 2077 performs inverse fast Fourier transform on the multiplexed signal, performs SC-FDMA modulation, adds a guard interval to the SC-FDMA-modulated SC-FDMA symbol, and generates a baseband digital signal Convert the baseband digital signal to an analog signal, generate in-phase and quadrature components of the intermediate frequency from the analog signal, remove excess frequency components for the intermediate frequency band, and convert the intermediate-frequency signal to a high-frequency signal Are converted (up-converted) to remove excess frequency components, power-amplified, and output to the transmission / reception antenna 211 for transmission.
  • FIG. 3 is a sequence chart showing an example of operations of the mobile station apparatus 1 and the base station apparatus 3 according to the present invention.
  • the base station apparatus 3 monitors the maximum loss power value for each uplink carrier element, periodicPHR-Timer, prohibitPHR-Timer, dl-PathlossChange, and the downlink carrier element for monitoring the path loss to control the power headroom.
  • the mobile station apparatus 1 is notified of information including settings related to the power headroom (step S100).
  • the mobile station device 1 monitors the path loss of the downlink carrier element notified from the base station device 3, and manages the periodicPHR-Timer and the prohibitPHR-Timer notified from the base station device 3 (step S101).
  • the mobile station apparatus 1 monitors the path loss of the downlink carrier element notified from the base station apparatus 3, and the prohibit PHR-Timer has been completed. Further, as the initial transmission, the power headroom is set with the uplink radio resource (PUSCH).
  • PUSCH uplink radio resource
  • the base station apparatus 3 transmits an uplink grant indicating the initial transmission PUSCH radio resource allocation to the mobile station apparatus 1 (step S103).
  • the mobile station apparatus 1 determines transmission of power headroom and is assigned the PUSCH radio resource for initial transmission
  • the power headroom for all uplink carrier elements allocated to the base station apparatus 3 Is calculated (step S104).
  • step S104 when radio resources for initial transmission or retransmission credit are not allocated to the uplink carrier element, it is assumed that a predetermined number of physical resource blocks are allocated to the uplink carrier element. Is calculated.
  • the mobile station apparatus 1 transmits the calculated power headroom using the PUSCH to which radio resources for initial transmission are allocated (step S105), and starts or restarts the periodicPHR-Timer and the prohibitPHR-Timer (step S106). .
  • the base station device 3 receives the PUSCH to which the radio resource is assigned to the mobile station device 1 in step S103, and acquires the power headroom (step S107). After step S106 and step S107, the process related to transmission / reception of the power headroom is completed, and the mobile station apparatus 1 returns to the path loss monitoring and timer management in step S101.
  • the base station apparatus 3 notifies the mobile station apparatus 1 of the uplink carrier element for frequency band aggregation. However, the base station apparatus 3 only notifies the mobile station apparatus 1 of the downlink carrier element used for radio communication. Mobile station apparatus 1 may use the uplink carrier element corresponding to the notified downlink carrier element for frequency band aggregation. In this case, information indicating an uplink carrier element corresponding to the downlink carrier element is notified or notified from the base station apparatus 3 to the mobile station apparatus 1.
  • the path loss of the downlink carrier element becomes a close value, and any of the downlink carrier elements If the path loss is known, the path loss of another downlink carrier element can be estimated. For this reason, it is only necessary for the mobile station apparatus 1 to measure the path loss of one downlink carrier element and to monitor the change of the path loss for controlling the power headroom in the one downlink carrier element.
  • the mobile station apparatus 1 uses the power headroom that is the difference between the maximum transmission power value determined for each uplink carrier element and the predetermined power value estimated for uplink transmission. Is set by the base station apparatus 3 when the path loss of a certain downlink carrier element among a plurality of downlink carrier elements changes by a predetermined value or more. The transmission of the power headroom for uplink transmission corresponding to all downlink carrier elements is determined. As a result, since the number of downlink carrier elements that the mobile station apparatus 1 monitors for path loss changes can be reduced, the load when monitoring the path loss change of the mobile station apparatus 1 can be reduced, and all downlink Since the timer management can be made common to the link carrier elements, the timer management becomes easy.
  • the power headroom setting unit 1013 of the upper layer processing unit 101 of the base station apparatus 3 of the present embodiment is The difference is that a downlink carrier element for monitoring path loss is not set to control power headroom, and that a different dl-PathlossChange is set for each downlink carrier element. Since other functions of the power headroom setting unit 1013 according to the present embodiment are the same as those of the power headroom setting unit 1013 according to the first embodiment, description of the same functions as those of the first embodiment is omitted. To do.
  • the power headroom control unit 2015 of the upper layer processing unit 201 of the mobile station apparatus 1 of the present embodiment is The difference is that the path loss change of all downlink carrier elements allocated from the base station apparatus 3 is monitored. Also, it is different to determine transmission of the power headroom when the items described below apply. That is, the promptPHR-Timer is completed, and further, after transmitting the power headroom as the initial transmission, the downlink carrier element assigned by the base station apparatus 3 uses the downlink carrier element in the downlink carrier element. This is a case where the path loss changes by dl-PathlossChange [dB] or more set for each carrier element.
  • FIG. 4 is a diagram showing an example of the configuration of carrier elements according to the second embodiment of the present invention.
  • the horizontal axis indicates the frequency domain
  • DCC-1, DCC-2, and UCC-1 are composed of carrier elements in continuous frequency bands in the frequency domain
  • DCC-3, DCC-4, and UCC- 2 is composed of carrier elements in continuous frequency bands in the frequency domain
  • the DCC-1, DCC-2, and UCC-1 groups, and the DCC-3, DCC-4, and UCC-2 groups are separated in the frequency domain. Configured in the frequency domain.
  • dl-PathlossChange for each downlink carrier element as in this embodiment.
  • the room can be controlled. For example, a large value dl-PathlossChange is set for a downlink carrier element whose path loss is likely to change due to movement of the mobile station apparatus 1, and a small value dl-PathlossChange is set for a downlink carrier element whose path loss is difficult to change. It may be set.
  • the mobile station device 1 may transmit a plurality of downlink carrier element signals using different antennas and power amplifiers.
  • DCC-1, DCC-2, and UCC-1, and DCC-3, DCC-4, and UCC-2 have different transmission / reception antennas 211 and power amplifiers of mobile station apparatus 1 used for signal transmission / reception.
  • an imbalance in antenna gain may occur when transmitting / receiving antennas 211-1 and 211-2 that differ depending on downlink carrier elements are used.
  • the mobile station device 1 monitors the change of the path loss of all downlink carrier elements allocated to the base station device 3 so that the mobile station device 1 can accurately detect regardless of the configuration of the transmission / reception antenna 211 of the mobile station device 1. It is possible to control transmission of the power headroom.
  • the mobile station apparatus 1 monitors a change in path loss of one downlink carrier element.
  • all the downlinks in which the mobile station apparatus 1 is set as the base station apparatus 3 are monitored.
  • the base station apparatus 3 sets the number of downlink carrier elements for monitoring the path loss change according to the configuration of the transmission / reception antenna 211 of the mobile station apparatus 1 and notifies the mobile station apparatus 1 of the number. You may do it.
  • the mobile station device 1 transmits information indicating the configuration of the transmission / reception antenna 211 of the own device to the base station device 3, or the mobile station from information such as the power headroom that the base station device 3 receives from the mobile station device 1. It is necessary to infer the configuration of the transmission / reception antenna 211 of the device 1. As a result, it is possible to efficiently control transmission of the power headroom according to the configuration of the transmission / reception antenna 211 of the mobile station apparatus 1.
  • the power headroom is calculated for each uplink carrier element.
  • the transmission / reception antenna included in the mobile station apparatus 1 is calculated from the maximum transmission power value of the mobile station apparatus 1.
  • a value obtained by subtracting the sum of predetermined power values estimated for uplink transmission of the uplink carrier element corresponding to 211 and the power amplifier may be calculated as power headroom.
  • the base station apparatus 3 can recognize the power reserve for each power amplifier included in the mobile station apparatus 1 and can perform uplink power control according to the configuration of the power amplifier of the mobile station apparatus 1. .
  • the mobile station device 1 includes all uplink carrier elements assigned to the base station device 3 or downlink carrier elements assigned to the base station device 3.
  • the power headroom of all corresponding uplink carrier elements is configured as one MAC CE, a different MAC CE may be configured for each power headroom.
  • the power headroom control unit 2015 starts or restarts the periodicPHR-Timer and the preventPHR-Timer when all the MAC CEs including the power headroom are transmitted. That is, the power headroom control unit 2015 does not start and restart the periodic PHR-Timer and the preventPHR-Timer even if the power headroom of some uplink carrier elements is transmitted.
  • the periodicPHR-Timer and the probitPHR-Timer may be started or restarted when all the power headroom related to the uplink carrier element corresponding to the downlink carrier element whose path loss has changed by dl-PathlossChange [dB] or more is transmitted. .
  • the physical resource block for PUSCH transmission is not allocated to the uplink carrier element at the timing when the mobile station apparatus 1 transmits the power headroom corresponding to the certain uplink carrier element.
  • a method for calculating the power headroom will be described.
  • the transmission power control unit 2013 of the mobile station apparatus 1 corresponds to the power headroom at the timing of transmitting the power headroom to the MPPUSCH when calculating the power headroom from the equation (2).
  • the timing for transmitting the power headroom corresponding to a certain uplink carrier element that is, the mobile station apparatus 1 has determined transmission of the power headroom, and the PUSCH for initial transmission is set in any uplink carrier element.
  • the transmission power control unit 2013 of the mobile station apparatus 1 of the third embodiment allocates a physical resource block for PUSCH transmission to the uplink carrier element at the timing of transmitting the power headroom corresponding to a certain uplink carrier element. If not, a predetermined number of uplink carrier elements (eg, “1”, the number of physical resource blocks allocated for PUSCH transmission immediately before in the uplink carrier element corresponding to the power headroom, or the power The power headroom is calculated on the assumption that physical resource blocks for PUSCH transmission (such as the number of physical resource blocks allocated to PUSCH in the uplink carrier element that transmits headroom) are allocated. That is, the power headroom is calculated assuming that M PUSCH is a predetermined value.
  • a predetermined number of uplink carrier elements eg, “1”, the number of physical resource blocks allocated for PUSCH transmission immediately before in the uplink carrier element corresponding to the power headroom, or the power The power headroom is calculated on the assumption that physical resource blocks for PUSCH transmission (such as the number of physical resource blocks allocated
  • FIG. 5 is a diagram for explaining an example of a power headroom calculation method according to the third embodiment of the present invention.
  • two uplink carrier elements (UCC-1, UCC-2) are shown.
  • the horizontal axis is the frequency domain
  • the vertical axis is the time domain
  • the hatched area indicates the radio resource for PUSCH transmission allocated to UCC-2.
  • FIG. 5 shows the UCC-1 PUSCH transmission power P req calculated by the transmission power control unit 2013, the UCC-1 maximum transmission power value P CMAX, and the UCC-1 power headroom PH.
  • the vertical axis is power.
  • a predetermined number eg, “1” or Number of physical resource blocks allocated for PUSCH transmission immediately before in the uplink carrier element corresponding to the power headroom, or number of physical resource blocks allocated to PUSCH in the uplink carrier element transmitting the power headroom, etc.
  • PUSCH physical resource blocks for transmission of the as assigned, calculates the transmission power P req of PUSCH (step T100).
  • the power headroom PH is calculated from the equation (2) using the UCC-1 PUSCH transmission power P req and the UCC-1 maximum transmission power value P CMAX , and the UCC-1 PUSCH uses the UCC-1 PUSCH.
  • the power headroom is transmitted (step T101).
  • the radio resource control unit 1011 of the base station device 3 of the third embodiment receives the power headroom of the uplink carrier element to which no physical resource block for PUSCH transmission is received, the transmission of the mobile station device 1
  • the power control unit 2013 determines that the power headroom is calculated assuming that a predetermined number of physical resource blocks for PUSCH transmission are allocated.
  • the mobile station apparatus 1 also uses the formula (2) when the physical resource block for PUSCH transmission is not allocated to the uplink carrier element at the timing of transmitting the power headroom corresponding to a certain uplink carrier element. Power headroom can be calculated.
  • this power headroom calculation method can also be applied to the case where power headroom reports corresponding to uplink carrier elements are transmitted at different timings. Further, the present invention can also be applied when transmitting power headroom corresponding to one uplink carrier element. The present invention can also be applied to the case where the mobile station apparatus 1 monitors path loss and / or path loss change with one or a plurality of downlink carrier elements. Further, the present invention can also be applied when the base station apparatus 3 selects an uplink carrier element for transmitting power headroom and notifies the mobile station apparatus.
  • the mobile station apparatus 1 calculates the power headroom when transmitting power headroom corresponding to a certain uplink carrier element using PUSCH assigned to different uplink carrier elements. Will be described.
  • the transmission power control unit 2013 of the mobile station device 1 and the radio resource control unit 1011 of the base station device 3 are different.
  • description of the same functions as those in the first embodiment is omitted.
  • the transmission power control unit 2013 of the mobile station apparatus 1 corresponds to the power headroom at the timing of transmitting the power headroom to the MPPUSCH when calculating the power headroom from the equation (2).
  • the base station device 3 allocates radio resources to an uplink carrier element, and transmits an uplink grant indicating the radio resource allocation to the mobile station device 1, but the mobile station device 1 detects the uplink grant.
  • the mobile station apparatus 1 fails, the mobile station apparatus 1 determines that no radio resource is allocated to the uplink carrier element, and calculates and transmits power headroom.
  • the base station apparatus 3 uses the radio resource allocated by itself. Since it is recognized that the power headroom calculated based on the reception has been received, there is a problem that the interpretation of the power headroom differs between the mobile station device 1 and the base station device 3.
  • the transmission power control unit 2013 of the mobile station apparatus 1 transmits a power headroom corresponding to a certain uplink carrier element using a PUSCH assigned to a different uplink carrier element
  • the uplink carrier element A predetermined number of physical resource blocks for PUSCH transmission (for example, “1” or the number of physical resource blocks allocated to the PUSCH in the uplink carrier element transmitting the power headroom) is allocated.
  • the power headroom is calculated assuming that M PUSCH is a predetermined value.
  • the radio resource control unit 1011 of the base station device 3 receives a power headroom corresponding to a certain uplink carrier element using a PUSCH assigned to a different uplink carrier element
  • the mobile station device It is determined that the transmission power control unit 2013 is a power headroom calculated on the assumption that a predetermined number of physical resource blocks for PUSCH transmission are allocated.
  • the interpretation of the power headroom differs between the mobile station apparatus 1 and the base station apparatus 3. It can be avoided.
  • this power headroom calculation method can also be applied to the case where power headroom reports corresponding to uplink carrier elements are transmitted at different timings. Further, the present invention can also be applied when transmitting power headroom corresponding to one uplink carrier element. The present invention can also be applied to the case where the mobile station apparatus 1 monitors path loss and / or path loss change with one or a plurality of downlink carrier elements. Further, the present invention can also be applied when the base station apparatus 3 selects an uplink carrier element for transmitting power headroom and notifies the mobile station apparatus.
  • the fifth embodiment of the present invention will be described below.
  • a method in which the mobile station apparatus 1 transmits the power headroom (first power reserve value) of PUSCH and / or the power headroom (second power reserve value) of PUCCH will be described.
  • the transmission power control unit 2013 of the mobile station device 1 and the radio resource control unit 1011 of the base station device 4 are different.
  • description of the same functions as those in the first embodiment is omitted.
  • Non-Patent Document 3 Chapter 6 describes the simultaneous transmission of PUSCH and PUCCH in LTE-A.
  • the base station apparatus 3 transmits the radio resource for PUSCH transmission to the mobile station apparatus 1 that transmits the PUCCH and the PUSCH simultaneously. It is not possible to determine how many physical resource blocks to allocate. Therefore, the mobile station apparatus 1 needs to transmit the PUCCH power headroom to the base station apparatus 3, but the calculation method and transmission method of the PUCCH power headroom are unclear. Therefore, in the fifth embodiment, a PUCCH power headroom calculation method and transmission method are provided.
  • the transmission power control unit 2013 of the mobile station device 1 of the fifth embodiment is assigned from the base station device 3 based on the equation (2).
  • the PUSCH power headroom of all the uplink carrier elements that have been received is calculated and transmitted to the base station apparatus 3 via the transmission unit 207.
  • the transmission power control unit 2013 uses all uplink carrier elements allocated from the base station apparatus 3 based on the equation (4) or radio resources for transmitting PUCCH from the base station apparatus 3 (radio resources for transmitting control information). Is assigned to the PUCCH power headroom of the uplink carrier element (the base station apparatus 3 may notify the mobile station apparatus 1 of this uplink carrier element). It transmits to the base station apparatus 3.
  • h (n CQI , n HARQ ) and ⁇ F_PUCCH are a predetermined PUCCH format and a predetermined number of bits (for example, one HARQ bit in PUCCH format 1a, or In the PUCCH format 2, the channel quality information is calculated as 4 bits).
  • the PUCCH format and the number of bits transmitted using the timing and the uplink carrier element are used.
  • the power headroom of PUCCH may be calculated from equation (4).
  • the radio resource control unit 1011 of the base station apparatus 3 according to the fifth embodiment transmits a transmission power value when the mobile station apparatus 1 transmits PUCCH and PUSCH simultaneously based on the PUCCH power headroom and the PUSCH power headroom. To control.
  • the mobile station apparatus 1 can calculate the power headroom of PUCCH corresponding to a certain uplink carrier element, and can transmit to the base station apparatus 3, and the base station apparatus 3 has the power headroom of PUCCH and the power head of PUSCH
  • the number of physical resource blocks allocated for PUSCH transmission from the room can be controlled.
  • this power headroom calculation method can also be applied to the case where power headroom reports corresponding to uplink carrier elements are transmitted at different timings. Further, the present invention can also be applied when transmitting power headroom corresponding to one uplink carrier element. The present invention can also be applied to the case where the mobile station apparatus 1 monitors path loss and / or path loss change with one or a plurality of downlink carrier elements. The present invention can also be applied to the case where the PUCCH power headroom and the PUSCH power headroom are configured as separate MAC CEs. The present invention can also be applied to the case where the PUCCH power headroom and the PUSCH power headroom are configured as the same MAC CE. Moreover, it is applicable also when combining two or more of said conditions.
  • the wireless communication system of the present invention is a wireless communication system in which a base station apparatus and a mobile station apparatus perform wireless communication using a plurality of component carriers, and the mobile station apparatus is connected to the base station apparatus.
  • a power reserve value that is a difference between a maximum transmission power value determined for each uplink component carrier and a predetermined power value estimated for uplink transmission, and among the plurality of downlink component carriers.
  • the mobile station apparatus can reduce the number of downlink component carriers that monitor the path loss change, and the path loss of the mobile station apparatus. It is possible to reduce the load when monitoring the change of the timer, and it is possible to make the management of the timer common to all the downlink component carriers, so that the management of the timer becomes easy.
  • the mobile station apparatus of the present invention is a mobile station apparatus applied to a radio communication system in which a base station apparatus and a mobile station apparatus perform radio communication using a plurality of component carriers,
  • a power headroom control unit that manages a power surplus value that is a difference between a maximum transmission power value determined for each uplink component carrier from the base station device and a predetermined power value estimated for uplink transmission;
  • a path loss measurement unit that monitors a path loss of a downlink component carrier notified from the base station device among a plurality of downlink component carriers, and the power headroom control unit includes one of the downlink component carriers. If the path loss value changes by a predetermined value or more, all downlink links set by the base station apparatus are It is characterized by determining the transmission to the base station apparatus of power remaining values for uplink transmission corresponding to the component carrier.
  • the mobile station apparatus since the path loss of the downlink component carrier notified from the base station apparatus among the plurality of downlink component carriers is monitored, the mobile station apparatus reduces the number of downlink component carriers for monitoring the path loss change. Therefore, it is possible to reduce the load when monitoring the path loss change of the mobile station apparatus, and it is possible to make the timer management common to all the downlink component carriers, thereby facilitating the timer management.
  • any one of the downlink component carriers is notified from the base station apparatus, and the path loss measuring unit is notified It is characterized by monitoring the path loss of any one downlink component carrier.
  • the mobile station apparatus monitors the path loss of any one of the notified downlink component carriers, it is possible to reduce the number of downlink component carriers that monitor the change of the path loss.
  • the path loss of other downlink component carriers can be estimated from the path loss of the downlink component carrier.
  • the path loss measurement unit monitors the path loss of all downlink component carriers allocated from the base station apparatus.
  • the mobile station apparatus monitors the path loss of all downlink component carriers allocated from the base station apparatus, when the influence of the path loss is different as in the case of downlink component carriers that are greatly separated in the frequency domain.
  • the power headroom can be controlled efficiently and accurately.
  • the power headroom control unit transmits the power reserve value
  • an uplink component radio resource is not allocated to the uplink component carrier.
  • the power reserve value is calculated on the assumption that a predetermined amount of radio resources are allocated to the uplink component carrier.
  • the mobile station apparatus can calculate the power headroom by the same method as in the case where it is assigned.
  • the power headroom control unit transmits the power reserve value at an uplink component carrier other than the uplink component carrier corresponding to the power reserve value.
  • the power reserve value is calculated on the assumption that a predetermined amount of radio resources are allocated to the uplink component carrier.
  • the power reserve value when transmitting a power reserve value on an uplink component carrier other than the uplink component carrier corresponding to the power reserve value, assuming that a predetermined amount of radio resources are allocated to the uplink component carrier, the power reserve value Therefore, even when the mobile station apparatus fails to detect the uplink grant transmitted by the base station apparatus, it is avoided that the interpretation of the power headroom differs between the mobile station apparatus and the base station apparatus. can do.
  • the mobile station apparatus is further estimated from the base station apparatus for transmitting a maximum transmission power value determined for each uplink component carrier and uplink control information.
  • the power headroom control unit manages a second power reserve value that is a difference from the predetermined power value, and a radio resource of a predetermined format is allocated to the uplink component carrier and transmits a predetermined number of bits. As a feature, the second power reserve value is calculated.
  • the second power reserve value that is the difference between the maximum transmission power value determined for each uplink component carrier from the base station apparatus and the predetermined power value estimated for uplink control information transmission is managed. Therefore, the mobile station apparatus can calculate the power headroom of PUCCH corresponding to a certain uplink component carrier and transmit it to the base station apparatus, and the base station apparatus can calculate the power headroom of PUCCH and the power headroom of PUSCH. It is possible to control the number of physical resource blocks allocated for PUSCH transmission.
  • a base station apparatus is a base station apparatus applied to a radio communication system in which a base station apparatus and a mobile station apparatus perform radio communication using a plurality of component carriers. 3) The mobile station apparatus according to 3) sets a downlink component carrier for monitoring path loss, and notifies the mobile station apparatus of the set downlink component carrier.
  • the mobile station apparatus can monitor the path loss of the notified downlink component carrier.
  • the radio communication method of the present invention is a radio communication method of a radio communication system in which a base station apparatus and a mobile station apparatus perform radio communication using a plurality of component carriers, and the mobile station apparatus A power reserve value that is a difference between a maximum transmission power value determined for each uplink component carrier from the base station apparatus and a predetermined power value estimated for uplink transmission, and a plurality of downlink power values are managed.
  • the path loss of the downlink component carrier notified from the base station apparatus is monitored, and when the path loss value of any downlink component carrier changes by a predetermined value or more, the setting is made from the base station apparatus Power reserve value for uplink transmission corresponding to all downlink component carriers It is characterized by determining the transmission to serial base station apparatus.
  • the mobile station apparatus monitors the path loss of the downlink component carrier notified from the base station apparatus among the plurality of downlink component carriers, the number of downlink component carriers for monitoring the change of the path loss is reduced. Therefore, it is possible to reduce the load when monitoring the path loss change of the mobile station apparatus, and it is possible to make the timer management common to all the downlink component carriers, thereby facilitating the timer management.
  • the mobile station apparatus control program of the present invention uses a plurality of component carriers to control a mobile station apparatus applied to a wireless communication system in which a base station apparatus and a mobile station apparatus perform wireless communication.
  • a difference between a maximum transmission power value determined for each uplink component carrier from the base station apparatus and a predetermined power value estimated for uplink transmission in the power headroom control unit In the process for managing the power surplus value, in the path loss measurement unit, in the plurality of downlink component carriers, the process for monitoring the path loss of the downlink component carrier notified from the base station apparatus, and in the power headroom control unit ,
  • the path loss value of any downlink component carrier is a predetermined value
  • a series of processes including: determining transmission of power reserve values for uplink transmission corresponding to all downlink component carriers set from the base station apparatus to the base station apparatus,
  • the computer is readable and executable as a command.
  • the mobile station apparatus when the path loss value of any downlink component carrier changes by a predetermined value or more, the mobile station apparatus performs uplink transmission for all downlink component carriers set by the base station apparatus. Therefore, it is possible to reduce the number of downlink component carriers for monitoring the path loss change, and to reduce the load when monitoring the path loss change of the mobile station apparatus. This makes it possible to make timer management common to all downlink component carriers, so that timer management becomes easy.
  • a program that operates in the base station apparatus 3 and the mobile station apparatus 1 related to the present invention is a program (computer functions as a computer) that controls a CPU (Central Processing Unit) so as to realize the functions of the above-described embodiments related to the present invention.
  • Program Information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing, and then stored in various ROMs such as Flash ROM (Read Only Memory) and HDD (Hard Disk Drive). Reading, correction, and writing are performed by the CPU as necessary.
  • the mobile station apparatus 1 and a part of the base station apparatus 3 in the first to third embodiments described above may be realized by a computer.
  • the program for realizing the control function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by a computer system and executed.
  • the “computer system” here is a computer system built in the mobile station apparatus 1 or the base station apparatus 3 and includes an OS and hardware such as peripheral devices.
  • the “computer-readable recording medium” means a storage device such as a flexible disk, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system.
  • the “computer-readable recording medium” is a medium that dynamically holds a program for a short time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, In such a case, a volatile memory inside a computer system serving as a server or a client may be included and a program that holds a program for a certain period of time.
  • the program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.
  • part or all of the mobile station device 1 and the base station device 3 in the above-described embodiment may be realized as an LSI that is typically an integrated circuit.
  • Each functional block of the mobile station device 1 and the base station device 3 may be individually chipped, or a part or all of them may be integrated into a chip.
  • the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor.
  • an integrated circuit based on the technology can also be used.

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PCT/JP2010/066326 2009-10-28 2010-09-21 無線通信システム、基地局装置、移動局装置、無線通信方法、移動局装置の制御プログラム、基地局装置および移動局装置の集積回路 Ceased WO2011052312A1 (ja)

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BR112012010145-5A BR112012010145B1 (pt) 2009-10-28 2010-09-21 método de comunicação por rádio e aparelho de estação móvel
AU2010312811A AU2010312811B2 (en) 2009-10-28 2010-09-21 Wireless communication system, base station apparatus, mobile station apparatus, wireless communication method, control program for mobile station apparatus, and integrated circuit for base station apparatus and mobile station apparatus
EP10826446.6A EP2496025A4 (en) 2009-10-28 2010-09-21 WIRELESS COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE STATION APPARATUS, WIRELESS COMMUNICATION METHOD, MOBILE STATION APPARATUS CONTROL PROGRAM, AND BASE STATION APPARATUS AND MOBILE STATION APPARATUS INTEGRATED CIRCUITS
CN2010800484781A CN102598806A (zh) 2009-10-28 2010-09-21 无线通信系统、基站装置、移动站装置、无线通信方法、移动站装置的控制程序、基站装置以及移动站装置的集成电路
EP12006670.9A EP2541999B1 (en) 2009-10-28 2010-09-21 Method for radio communication system and mobile station apparatus
CA2777892A CA2777892C (en) 2009-10-28 2010-09-21 Wireless communication system and wireless communication method
ZA2012/02878A ZA201202878B (en) 2009-10-28 2012-04-19 Wireless communication system,base station apparatus,mobile station apparatus,wireless communication method,control program for mobile station apparatus,and integrated circuit for base station apparatus and mobile station apparatus
US13/458,177 US9014031B2 (en) 2009-10-28 2012-04-27 Wireless communication system, apparatus and method using a power headroom value for each uplink component carrier of a plurality of uplink component carriers
US14/656,165 US10560924B2 (en) 2009-10-28 2015-03-12 Mobile station apparatus and method for conditionally computing a transmit power for comparison with a maximum transmit power

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JP2009-247497 2009-10-28

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AU (1) AU2010312811B2 (enExample)
BR (1) BR112012010145B1 (enExample)
CA (1) CA2777892C (enExample)
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CN102598806A (zh) 2012-07-18
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EP2496025A4 (en) 2014-07-02
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