WO2014163144A1 - Dispositif terminal, procédé de communication et circuit intégré - Google Patents

Dispositif terminal, procédé de communication et circuit intégré Download PDF

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Publication number
WO2014163144A1
WO2014163144A1 PCT/JP2014/059845 JP2014059845W WO2014163144A1 WO 2014163144 A1 WO2014163144 A1 WO 2014163144A1 JP 2014059845 W JP2014059845 W JP 2014059845W WO 2014163144 A1 WO2014163144 A1 WO 2014163144A1
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Prior art keywords
information
uplink
setting
subframe
downlink
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PCT/JP2014/059845
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English (en)
Japanese (ja)
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渉 大内
立志 相羽
翔一 鈴木
一成 横枕
公彦 今村
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シャープ株式会社
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC

Definitions

  • the present invention relates to a terminal device, a communication method, and an integrated circuit.
  • WirelessMA LAN wideXLAN, wideband
  • WCDMA Wideband Code Division Multiple Access
  • 3GPP Third Generation Partnership Project
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution-Advanced
  • IEEE The Institute of Electrical Electronics and Electronics Electronics engineers
  • a base station device cell, first communication device (communication device different from the terminal device), eNodeB) and terminal device (mobile terminal, mobile station device, second communication)
  • the device (communication device different from the base station device) and UE (User Equipment) each have a plurality of transmission / reception antennas and use MIMO (Multi Input Input Multi Output) technology to spatially multiplex data signals. Realize data communication.
  • MIMO Multi Input Input Multi Output
  • the base station device In order to realize data communication between the base station device and the terminal device in the communication system, the base station device needs to perform various controls on the terminal device. Therefore, the base station apparatus performs data communication in the downlink and uplink by notifying the terminal apparatus of control information using a predetermined resource. For example, the base station apparatus realizes data communication by notifying the terminal apparatus of resource allocation information, data signal modulation and coding information, data signal spatial multiplexing number information, transmission power control information, etc. To do.
  • the communication system supports time division duplex (TDD: “Time Division” Duplex).
  • TDD time division duplex
  • LTE employing the TDD scheme is also referred to as TD-LTE or LTE TDD.
  • TDD is a technology that enables downlink and uplink communications in a single frequency band (carrier frequency, component carrier) by time-division multiplexing uplink signals and downlink signals.
  • the downlink and the uplink can be switched in units of subframes by setting in advance.
  • a subframe that can switch between downlink transmission and uplink transmission in the time domain (symbol domain) is defined.
  • a time region in which downlink transmission is possible is called a downlink pilot time slot (DwPTS: Downlink Pilot Time Slot)
  • a time region in which uplink transmission is possible is called an uplink pilot time slot (UpPTS: Uplink Pilot Time Slot).
  • the terminal apparatus can receive a downlink signal transmitted from the base station apparatus, and a subframe j different from the subframe i is an uplink subframe.
  • an uplink signal can be transmitted from the terminal apparatus to the base station apparatus.
  • subframe k different from subframe i or subframe j is a special subframe
  • a downlink signal can be received in downlink time domain DwPTS
  • an uplink signal can be received in uplink time domain UpPTS.
  • the uplink and downlink ratios for realizing the TDD scheme in LTE and LTE-A, and the ratios of DwPTS and UpPTS in the special subframe can be set using tables. These tables include specific information elements (TDD UL / DL configuration (TDD UL / DL configuration (s), TDD uplink-downlink configuration (s)), TDD configuration (TDD configuration (s), tdd-Config, TDD config ), UL / DL configuration (uplink-downlink configuration (s))).
  • Non-Patent Document 2 a traffic adaptive control technique that changes the ratio of uplink resources to downlink resources according to uplink traffic and downlink traffic (information amount, data amount, communication amount). It is being considered. For example, it has been studied to dynamically change the ratio of downlink subframes to uplink subframes. As a method for this, a flexible subframe that adaptively switches between a downlink subframe and an uplink subframe has been studied (Non-Patent Document 2).
  • the base station apparatus can receive an uplink signal or transmit a downlink signal in a flexible subframe. Further, unless the base station apparatus is instructed to transmit an uplink signal in the flexible subframe, the terminal apparatus can perform reception processing by regarding the flexible subframe as a downlink subframe.
  • the TDD for dynamically changing the ratio between the downlink subframe and the uplink subframe, the uplink and the downlink subframe, and the TDD UL / DL (re) setting is dynamic TDD (DTDD: Dynamic TDD). Sometimes called.
  • the communication system is a cellular communication system in which a plurality of areas covered by a base station device are arranged in a cell shape.
  • a single base station apparatus may manage a plurality of cells.
  • a single base station apparatus may manage a plurality of RRHs (Remote Radio Radio Heads).
  • a single base station apparatus may manage a plurality of local areas.
  • a single base station apparatus may manage a plurality of HetNets (Heterogeneous Networks). Further, a single base station apparatus may manage a plurality of low power base station apparatuses (LPN: “Low” Power “Node”).
  • LPN Low power base station apparatuses
  • a terminal device measures reference signal received power (RSRP: Reference Signal Received Power) based on a cell-specific reference signal (CRS: Cell-specific Reference Signal (s)) (Non-Patent Document 3). ).
  • RSRP Reference Signal Received Power
  • CRS Cell-specific Reference Signal (s)
  • communication may be performed using a carrier (component carrier) in which some physical channels and signals defined in LTE are not arranged.
  • a carrier component carrier
  • such a carrier is referred to as a new carrier type (NCT: “New Carrier Type”).
  • NCT New Carrier Type
  • the cell-specific reference signal, the physical downlink control channel, and the synchronization signal may not be arranged in the new carrier type.
  • the introduction of physical channels (PDCH: Physical Discovery Channel, NDS: New Discovery Signal (s)) for mobility measurement and time / frequency synchronization detection in a cell with a new carrier type is being considered ( Non-patent document 4).
  • the new carrier type may be referred to as an additional carrier type (ACT: “Additional Carrier Type”).
  • an existing carrier type may be referred to as a legacy carrier type (LCT: “Legacy Carrier Type”).
  • the transmission timings of various uplink physical channels are set to implicit or explicit, respectively.
  • DTDD Dynamic Time Division
  • a subframe that can switch between an uplink subframe and a downlink subframe is set. Therefore, in such a subframe, signals transmitted from the base station apparatus and the terminal apparatus interfere with each other, and there is a problem that appropriate communication cannot be performed.
  • the present invention has been made in view of the above problems, and an object thereof is to provide a terminal device, a communication method, and an integrated circuit capable of appropriate transmission power control and interference control.
  • a terminal apparatus is a terminal apparatus that communicates with a base station apparatus, and is information related to the first setting and / or second information.
  • a receiver that receives information related to the setting of the first information, and information related to the first setting is set and information related to the second setting is not set, based on the first uplink power control in all uplink subframes Transmitting the uplink signal, and when both the information on the first setting and the information on the second setting are set, the first subframe subset and the second subframe subset are configured, and the first An uplink signal is transmitted based on the first uplink power control in an uplink subframe included in one subframe subset, and the second A transmission unit that transmits an uplink signal based on second uplink power control in an uplink subframe included in the subframe subset, and the information regarding the first setting is a subframe for transmitting the uplink signal.
  • a communication method is a method for a terminal device that communicates with a base station device, and is a communication method for a terminal device that communicates with a base station device, the information regarding the first setting When information on the second setting is received, information on the first setting is set, and information on the second setting is not set, the first uplink power control is performed in all uplink subframes.
  • An integrated circuit is an integrated circuit mounted on a terminal device that communicates with a base station device, and has a function of receiving information on a first setting and / or information on a second setting. And when the information on the first setting is set and the information on the second setting is not set, an uplink signal is transmitted based on the first uplink power control in all uplink subframes, and When both information related to the first setting and information related to the second setting are set, the first subframe subset and the second subframe subset are configured, and the uplink included in the first subframe subset An uplink signal is transmitted based on the first uplink power control in a link subframe and included in the second subframe subset And a function of transmitting an uplink signal based on second uplink power control in an uplink subframe, wherein the information regarding the first setting is a subframe for transmitting an uplink signal.
  • Uplink subframe and information indicating the configuration (TDD UL / DL) configuration) of a subframe (downlink subframe) that receives a downlink signal
  • the information on the second setting is a bitmap configuration
  • the information related to the constant which is information indicating that the second TDD UL / DL setting is characterized.
  • the terminal apparatus in a communication system in which a base station apparatus and a terminal apparatus communicate, the terminal apparatus can improve interference and communication efficiency by performing appropriate transmission power control.
  • UplinkPowerControl UplinkPowerControl
  • a channel means a medium used for signal transmission.
  • a physical channel means a physical medium used for signal transmission.
  • Physical channels are LTE and LTE- In A and later standard releases, the structure may be added or the structure and format may be changed or added in the future. However, even in such a case, the description of each embodiment of the present invention is not affected.
  • LTE and LTE-A physical channel scheduling is managed using radio frames.
  • One radio frame is 10 ms, and one radio frame is composed of 10 subframes. Further, one subframe is composed of two slots (that is, one slot is 0.5 ms).
  • resource blocks are used as a minimum scheduling unit in which physical channels are allocated.
  • a resource block is a region where the frequency axis is composed of a certain frequency region composed of a set of a plurality of subcarriers (for example, 12 subcarriers) and a certain transmission time interval (for example, 1 slot, 7 symbols). Defined.
  • the physical channel corresponds to a set of resource elements that transmit information output from the upper layer.
  • the physical signal is used in the physical layer and does not transmit information output from the upper layer. That is, upper layer control information such as a radio resource control (RRC: “Radio Resource Control”) message and system information (SI: “System Information”) is transmitted on the physical channel.
  • RRC Radio Resource Control
  • SI System Information
  • Downlink physical channels include physical downlink shared channel (PDSCH: Physical Downlink Shared Channel), physical broadcast channel (PBCH: Physical Physical Broadcast Channel), physical multicast channel (PMCH: Physical Multicast Channel), physical control format indicator channel (PCFICH) : Physical Physical Control Format Indicator Channel, Physical Downlink Control Channel (PDCCH: Physical Downlink Control Channel), Physical Hybrid ARQ Indicator Channel (PHICH: Physical Physical Hybrid ARQ Indicator Channel), Enhanced Physical Downlink Control Channel (EPDCCH: Enhanced Physical Downlink Control) Channel). Further, downlink physical signals include various reference signals and various synchronization signals.
  • PDSCH Physical Downlink Shared Channel
  • PBCH Physical Physical Broadcast Channel
  • PMCH Physical Multicast Channel
  • PCFICH Physical Physical Control Format Indicator Channel
  • PDCCH Physical Downlink Control Channel
  • PHICH Physical Hybrid ARQ Indicator Channel
  • EPDCCH Enhanced Physical Downlink Control Channel
  • downlink physical signals include various reference signals and various synchronization signals.
  • the downlink reference signal includes a cell-specific reference signal (CRS: Cell-specific Reference Signal), a terminal device-specific reference signal (UERS: UE-specific Reference Signal), and a channel state information reference signal (CSI-RS: Channel State Reference Signal).
  • CRS Cell-specific Reference Signal
  • UERS terminal device-specific reference signal
  • CSI-RS Channel State Reference Signal
  • the synchronization signal includes a primary synchronization signal (PSS: Primary Synchronization Signal) and a secondary synchronization signal (SSS: Secondary Synchronization Signal).
  • the uplink physical channel includes a physical uplink shared channel (PUSCH: Physical Uplink Shared Channel), a physical uplink control channel (PUCCH: Physical Uplink Control Channel), and a physical random access channel (PRACH: Physical Physical Random Access Channel).
  • PUSCH Physical Uplink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • PRACH Physical Random Access Channel
  • the uplink physical signal includes various reference signals.
  • the uplink reference signal includes a demodulation reference signal (DMRS: “Demodulation Reference Signal”) and a sounding reference signal (SRS: “Sounding Reference Signal”).
  • the synchronization signal includes three types of primary synchronization signals (PSS: Primary Synchronization Signal) and a secondary synchronization signal (SSS: Secondary Synchronization Signal) composed of 31 kinds of codes arranged alternately in the frequency domain. 504 types of cell identifiers (PCI: [Physical] layer [Cell] Identity, [Physical] Cell [Identity], [Physical] Cell [Identifier]) and radio synchronization frames that are configured by the combination of the primary synchronization signal and the secondary synchronization signal Timing is shown.
  • PCI [Physical] layer [Cell] Identity, [Physical] Cell [Identity], [Physical] Cell [Identifier]
  • radio synchronization frames that are configured by the combination of the primary synchronization signal and the secondary synchronization signal Timing is shown.
  • the terminal device specifies the cell identifier of the synchronization signal received by the cell search.
  • a physical broadcast channel (PBCH: Physical Broadcast Channel) is transmitted for the purpose of notifying control parameters (broadcast information and system information) that are commonly used by terminal devices in a cell.
  • the broadcast information not notified by the PBCH is notified of the radio resource by the PDCCH, and is transmitted by the layer 3 message (system information (system control information), RRC message) by the PDSCH.
  • a cell global identifier (CGI: Cell Global Identifier) indicating a cell-specific identifier
  • TAI Tracking Area Identifier
  • a standby area by paging random access setting information (such as a transmission timing timer), Common radio resource setting information and the like are notified.
  • Downlink reference signals are classified into multiple types according to their use.
  • a cell-specific reference signal (CRS) is a pilot signal transmitted at a predetermined power for each cell, and is downlinked periodically in the frequency domain and the time domain based on a predetermined rule.
  • Link reference signal The terminal device measures the reception quality for each cell by receiving the cell-specific reference signal.
  • the terminal apparatus also uses the downlink cell-specific reference signal as a reference signal for demodulating the physical downlink control channel or the physical downlink shared channel that is transmitted simultaneously with the cell-specific reference signal.
  • the sequence used for the cell-specific reference signal is a sequence that can be identified for each cell. This sequence may be generated based on a pseudo-random sequence. Further, this sequence may be generated based on the Zadoff-Chu sequence. Further, this sequence may be generated based on the gold sequence.
  • the downlink reference signal is also used for estimating downlink propagation path fluctuations.
  • a downlink reference signal used for estimation of propagation path fluctuation may be referred to as a channel state information reference signal (Channel State Information Referencesals CSI-RS) or a CSI reference signal.
  • CSI-RS Channel State Information Referencesals
  • a CSI reference signal to which no signal is actually transmitted that is, a resource in which a signal is not transmitted from the base station is a zero power channel state information reference signal (Zero Power Channel State Information Reference Signals; Zero Power CSI-RS) or zero You may call it a power CSI reference signal.
  • the downlink resource used to measure the interference component is called a channel state information interference measurement resource (Channel State Information-Interference Measurement resource: CSI-IM resource), and zero power CSI included in the CSI-IM resource.
  • the terminal may perform measurement of an interference signal in order to calculate a CQI value.
  • downlink reference signals set individually for each terminal device include terminal device-specific reference signals (UERS: UE specific Reference Signals) or dedicated reference signals (Dedicated Reference Signals), downlink demodulation reference signals (DL DMRS: Downlink) Demodulation Reference Signals), etc., and used for demodulation of a physical downlink control channel or a physical downlink shared channel.
  • the physical downlink shared channel (Physical Downlink Shared Channel; PDSCH) notifies the terminal device of not only downlink data but also broadcast information (system information) not notified by the paging or physical broadcast information channel as a layer 3 message (RRC message). Also used for.
  • the radio resource allocation information of the physical downlink shared channel is indicated by the physical downlink control channel.
  • the PDSCH is also used to notify parameters (information elements, RRC messages) related to the downlink and uplink.
  • the physical downlink control channel (Physical Downlink Control Channel; PDCCH) is transmitted in several OFDM symbols from the beginning of each subframe, and resource allocation information and transmission power according to the scheduling of the base station device are transmitted to the terminal device. It is used for the purpose of indicating the adjustment amount of increase / decrease.
  • the terminal device monitors (monitors) the physical downlink control channel addressed to itself before transmitting / receiving layer 3 messages (paging, handover command, RRC message, etc.) that are downlink data and downlink control data.
  • paging, handover command, RRC message, etc. paging, handover command, RRC message, etc.
  • the physical downlink control channel may be configured to be transmitted in the area of the resource block that is assigned individually (dedicated) from the base station apparatus to the terminal apparatus, in addition to being transmitted by the OFDM symbol described above. Is possible.
  • the physical downlink control channel transmitted in the area of the resource block assigned individually to the terminal device from the base station apparatus may be referred to as an enhanced physical downlink control channel (EPDCCH: Enhanced PDCCH).
  • EPDCCH Enhanced PDCCH
  • the PDCCH transmitted using the above-described OFDM symbol may be referred to as a first control channel.
  • EPDCCH may be referred to as a second control channel.
  • a resource area to which the PDCCH can be allocated may be referred to as a first control channel area, and a resource area to which the EPDCCH can be allocated may be referred to as a second control channel area.
  • the PDCCH described below basically includes the EPDCCH.
  • the physical uplink shared channel (Physical Uplink Shared Channel; PUSCH) mainly transmits uplink data and uplink control data, and can also include control data such as downlink reception quality and ACK / NACK. In addition to uplink data, it is also used to notify the base station apparatus of uplink control information as a layer 3 message. Similarly to the downlink, the resource allocation information of the physical uplink shared channel is indicated by the physical downlink control channel. Moreover, PUSCH transmits uplink data with respect to the dynamic scheduling grant. Moreover, PUSCH transmits the information (for example, the identification information of the terminal device 2, the message 3) of the local station relevant to random access with respect to random access response grant. Moreover, the parameter used for transmission power control may differ with PUSCH according to the kind of detected grant.
  • the physical uplink control channel (Physical Uplink Control Channel; PUCCH) is a data acknowledgment acknowledgment (Acknowledgement / Negative Acknowledgement; ACK / NACK) or downlink propagation path information (channel state information) transmitted on the physical downlink shared channel. ) Notification and scheduling request (Scheduling ⁇ ⁇ ⁇ ⁇ Request; SR), which is an uplink resource allocation request (radio resource request).
  • Channel state information (CSI: Channel State Information) includes channel quality indicator (CQI: Channel Quality Indicator), precoding matrix indicator (PMI: Precoding Matrix Indicator), precoding type indicator (PTI: Precoding Type Indicator), rank indicator ( RI: Rank Indicator).
  • Each indicator may be expressed as an indication (Indication), but its use and meaning are the same.
  • the PUCCH format may be switched according to the UCI to be transmitted. For example, when the UCI is configured from HARQ ACK and / or SR, the UCI may be transmitted on the PUCCH using the format 1 / 1a / 1b / 3. Moreover, when UCI is comprised from periodic CSI, UCI may be transmitted by PUCCH using format 2.
  • the uplink reference signal (Uplink Reference Signal) is a demodulation reference signal (Demodulation Reference Signal; DMRS) used by the base station apparatus to demodulate the physical uplink control channel PUCCH and / or the physical uplink shared channel PUSCH,
  • the base station apparatus mainly includes a sounding reference signal (Sound) Reference Signal (SRS) that is used for estimating an uplink channel state.
  • the sounding reference signal is requested to be transmitted by a periodic sounding reference signal (P-SRS: Periodic SRS) set to be periodically transmitted by an upper layer and an SRS request included in the downlink control information format.
  • Aperiodic sounding reference signal (A-SRS: Aperiodic SRS).
  • the uplink reference signal may be referred to as an uplink pilot signal or an uplink pilot channel.
  • the periodic sounding reference signal may be referred to as a periodic sounding reference signal or a trigger type 0 sounding reference signal (Trigger Type 0 SRS).
  • the aperiodic sounding reference signal may be referred to as an aperiodic sounding reference signal or a trigger type 1 sounding reference signal (Trigger Type 1 SRS).
  • the aperiodic sounding reference signal includes a signal specialized for uplink channel estimation (for example, sometimes referred to as trigger type 1a SRS) and downlink channel state (CSI, CQI) in cooperative communication.
  • PMI, RI may be divided into signals used to compensate (for example, sometimes referred to as trigger type 1b SRS).
  • DMRS is set corresponding to each of PUSCH and PUCCH. DMRS is time-multiplexed in the same subframe as PUSCH or PUCCH and transmitted.
  • a subframe in which the sounding reference signal is transmitted is determined according to the information regarding the transmission subframe included in the setting of the sounding reference signal notified by higher layer signaling.
  • Information related to transmission subframes includes information set specific to a cell and information set specific to a terminal device.
  • the subframe in which the sounding reference signal shared by all the terminal devices in the cell is transmitted is set in the information set specifically for the cell.
  • the information set specifically for the terminal device includes a subframe offset and a transmission cycle that are a subset of subframes set for the cell. Based on these pieces of information, the terminal device can determine a subframe in which the sounding reference signal can be transmitted (sometimes referred to as an SRS subframe or an SRS transmission subframe).
  • the terminal apparatus transmits a physical uplink shared channel in a subframe in which a sounding reference signal set in a cell-specific manner is transmitted
  • the time of the physical uplink shared channel is equal to a symbol for transmitting the sounding reference signal.
  • Resources can be punctured and transmitted.
  • characteristic deterioration can be prevented.
  • channel estimation accuracy can be ensured for a terminal device that transmits a sounding reference signal.
  • the information set uniquely for the terminal device can be set independently (individually) between the periodic sounding reference signal and the aperiodic sounding reference signal.
  • the first uplink reference signal may be referred to as a periodic SRS (P-SRS: “Periodic” Sounding “Reference” Signal) and a trigger type 0 SRS (Trigger “Type 0” Sounding “Reference” Signal).
  • the second uplink reference signal may be referred to as an aperiodic SRS (A-SRS: Aperiodic Sounding Reference Signal) or a trigger type 1 SRS (Trigger Type 1 Sounding Reference Signal).
  • the first uplink reference signal is periodically transmitted according to the set transmission subframe when various parameters are set by higher layer signaling.
  • the second uplink reference signal is aperiodically transmitted when a transmission request is indicated by a field (SRS request) related to the transmission request for the second uplink reference signal included in the downlink control information format.
  • SRS request a field related to the transmission request for the second uplink reference signal included in the downlink control information format.
  • Sent When the SRS request included in a certain downlink control information format indicates an index (value) corresponding to positive or positive, the terminal device 2 transmits an A-SRS in a predetermined transmission subframe. Further, when the detected SRS request indicates an index (value) corresponding to negative or negative, the terminal device 2 does not transmit an A-SRS in a predetermined subframe.
  • a physical random access channel (Physical Random Access Channel; PRACH) is a channel used to notify a preamble sequence and has a guard time.
  • the preamble sequence is configured so as to express 6-bit information by preparing 64 types of sequences.
  • the physical random access channel is used as an access means for the terminal device to the base station device.
  • the terminal apparatus transmits a radio resource request when the physical uplink control channel is not set, and transmission timing adjustment information (timing advance (Timing Advance)
  • Timing advance Timing Advance
  • the terminal apparatus transmits a preamble sequence using the radio resource for the physical random access channel set by the base station apparatus.
  • the terminal device that has received the transmission timing adjustment information sets a transmission timing timer that measures the effective time of the transmission timing adjustment information that is commonly set by the broadcast information (or set individually by the layer 3 message), and transmits
  • the uplink state is managed as a transmission timing adjustment state during the valid time (during timing) of the timing timer, and as a transmission timing non-adjustment state (transmission timing unadjusted state) outside the valid period (during stop).
  • the layer 3 message is a control plane (C-plane: Control-plane) message exchanged in the radio resource control (RRC: Radio Resource Control) layer between the terminal device and the base station device, and is synonymous with RRC signaling or RRC message. Used in the sense of RRC signaling may also be referred to as higher layer signaling or dedicated signaling.
  • C-plane Control-plane
  • RRC Radio Resource Control
  • the logical channel is used to transmit RRC messages and information elements. Also, the logical channel is transmitted on the physical channel via the transport channel.
  • Broadcast control channel (BCCH: “Broadcast Control Channel”) is a downlink channel used to broadcast system control information. For example, system information and information necessary for initial access are transmitted using this channel. MIB (Master Information Block) and SIB1 (System Information Block Type 1) are transmitted using this channel.
  • MIB Master Information Block
  • SIB1 System Information Block Type 1
  • the shared control channel (CCCH: “Common Control Channel”) is a channel used to transmit control information between a network and a terminal device that does not have an RRC connection. For example, terminal-specific control information and setting information are transmitted using this channel.
  • the dedicated control channel (DCCH: “Dedicated Control Channel”) is a channel used for bidirectionally transmitting dedicated control information between a terminal apparatus having an RRC connection and the network. For example, cell-specific reconfiguration information is transmitted using this channel.
  • Information related to uplink power control includes information set as broadcast information, information set (re-) as information shared between terminal apparatuses in the same cell (shared information), and terminal-specific dedicated information ( Re) and set information.
  • the terminal device 2 performs transmission power control based only on information set as broadcast information, or information set as broadcast information / shared information and information set as dedicated information.
  • the radio resource control setting sharing information may be notified as broadcast information (or system information). Further, the radio resource control setting shared information may be notified as dedicated information (mobility control information).
  • Information on radio resource settings includes information on random access channel (RACH) settings, information on broadcast control channel (BCCH) settings, information on paging control channel (PCCH) settings, information on physical random access channel (PRACH) settings, physical downlink Information on link shared channel (PDSCH) setting, information on physical uplink shared channel (PUSCH) setting, information on physical uplink control channel (PUCCH) setting, information on sounding reference signal (SRS) setting, information on uplink power control And information on the uplink cyclic prefix length.
  • the information to be notified may be different between the case of being notified as broadcast information and the case of being set as reset information.
  • Information elements required for setting various physical channels / physical signals Is composed of shared setting information shared between terminal devices in the same cell and dedicated setting information set for each terminal device.
  • the sharing setting information may be transmitted as system information. Further, the share setting information may be transmitted as dedicated information when resetting.
  • the RRC message includes a broadcast channel message, a multicast channel message, a paging channel message, a downlink channel message, an uplink channel message, and the like.
  • Each RRC message may be configured to include an information element (IE: “Information” element).
  • IE Information element
  • information corresponding to a parameter may be set as the information element.
  • the RRC message may be referred to as a message.
  • a message class is a set of one or more messages.
  • the message may include an information element.
  • Information elements include an information element related to radio resource control, an information element related to security control, an information element related to mobility control, an information element related to measurement, and an information element related to multimedia broadcast multicast service (MBMS: Multimedia Broadcast Multicast Service).
  • the information element may include a lower information element.
  • the information element may be set as a parameter.
  • the information element may be defined as control information indicating one or more parameters.
  • IE Information Information Element
  • SI System Information
  • Dedicated Signaling Dedicated Signaling
  • An information element includes one or more fields.
  • An information element may be composed of one or more information elements.
  • the field included in the information element may be referred to as a parameter. That is, the information element may include one type (one) or more parameters.
  • the terminal apparatus performs radio resource allocation control, uplink power control, transmission control, and the like based on various parameters.
  • System information may be defined as an information element.
  • An information element may be set in the field constituting the information element.
  • a parameter may be set in a field constituting the information element.
  • the RRC message includes one or more information elements.
  • An RRC message in which a plurality of RRC messages are set is referred to as a message class.
  • Parameters related to uplink transmission power control notified to the terminal device 2 using system information include standard power for PUSCH, standard power for PUCCH, propagation path loss compensation coefficient ⁇ , and a list of power offsets set for each PUCCH format. , There is a power offset for the preamble and message 3. Further, the parameters related to the random access channel notified to the terminal device 2 using the system information include a parameter related to the preamble, a parameter related to transmission power control of the random access channel, and a parameter related to transmission control of the random access preamble. These parameters are used at the time of initial access or reconnection after a radio link failure (RLF: Radio Link Failure).
  • RLF Radio Link Failure
  • Information relating to transmission power control may be notified to the terminal device 2 as broadcast information. Moreover, you may notify to the terminal device 2 as shared information.
  • the communication system in the basic form of the first embodiment includes a base station device (hereinafter, access point, point, transmission point, reception point, cell, serving cell, transmission device, reception device, transmission station, reception station, transmission antenna group, As a transmission antenna port group, a reception antenna group, a reception antenna port group, a communication device, a communication terminal, and an eNodeB, a primary base station device (macro base station device, first base station device, first communication device) , Serving base station apparatus, anchor base station apparatus, first access point, first point, first transmission point, first reception point, macro cell, first cell, also called primary cell) .
  • a base station device hereinafter, access point, point, transmission point, reception point, cell, serving cell, transmission device, reception device, transmission station, reception station, transmission antenna group, As a transmission antenna port group, a reception antenna group, a reception antenna port group, a communication device, a communication terminal, and an eNodeB
  • a primary base station device macro base station device, first base station device
  • the communication system in the first embodiment includes a secondary base station apparatus (RRH (Remote Radio Head), a remote antenna, an extended antenna, a distributed antenna, a second access point, a second point, a second transmission point, Second receiving point, reference point, low power base station (LPN), micro base station, pico base station, femto base station, small base station, local area base station, phantom base Station device, home (indoor) base station device (Home eNodeB, Home NodeB, HeNB, HNB), second base station device, second communication device, coordinated base station device group, coordinated base station device set, coordinated base Station equipment, micro cell, pico cell, femto cell, small cell, phantom cell, local area, second cell, also called secondary cell) You may.
  • RRH Remote Radio Head
  • the communication system includes a terminal device (hereinafter, a mobile station, a mobile station device, a mobile terminal, a reception device, a transmission device, a reception terminal, a transmission terminal, a third communication device, a reception antenna group, A reception antenna port group, a transmission antenna group, a transmission antenna port group, a user apparatus, and a user terminal (UE: User Equipment).
  • a terminal device hereinafter, a mobile station, a mobile station device, a mobile terminal, a reception device, a transmission device, a reception terminal, a transmission terminal, a third communication device, a reception antenna group, A reception antenna port group, a transmission antenna group, a transmission antenna port group, a user apparatus, and a user terminal (UE: User Equipment).
  • the secondary base station apparatus may be shown as a plurality of secondary base station apparatuses.
  • the primary base station apparatus and the secondary base station apparatus use a heterogeneous network arrangement, and part or all of the coverage of the secondary base station apparatus is included in the coverage of
  • the communication system is composed of the base station device 1 and the terminal device 2.
  • a single base station apparatus 1 may manage one or more terminal apparatuses 2.
  • the single base station apparatus 1 may manage one or more cells (serving cell, primary cell, secondary cell, femto cell, pico cell, small cell, phantom cell).
  • the single base station apparatus 1 may manage one or more frequency bands (component carrier, carrier frequency).
  • a single base station apparatus 1 may manage one or more low-power base station apparatuses (LPN: “Low” Power “Node”).
  • the single base station apparatus 1 may manage one or more home (indoor) base station apparatuses (HeNB: Home eNodeB).
  • a single base station apparatus 1 may manage one or more access points.
  • the base station apparatuses may be connected by wire (optical fiber, copper wire, coaxial cable) or wireless (X2 interface, X3 interface).
  • the plurality of base station devices may be managed by a network.
  • a single base station apparatus may manage one or more relay station apparatuses (Relay).
  • the communication system may realize cooperative communication (CoMP: “Coordination” Multiple ”Points) with a plurality of base station apparatuses, low-power base station apparatuses, or home base station apparatuses.
  • CoMP “Coordination” Multiple ”Points
  • a plurality of low-power base station apparatuses or small cells arranged in the vicinity may be clustered (clustered or grouped).
  • the plurality of clustered low-power base station apparatuses may notify the same setting information.
  • a clustered small cell region (coverage) may be referred to as a local area.
  • the base station apparatus may be referred to as a transmission point (TP: “Transmission” Point). Further, in uplink transmission, the base station apparatus may be referred to as a reception point (RP: “Reception” Point). Also, the downlink transmission point and the uplink reception point can be path loss reference points (Pathloss Reference Point, Reference Point) for downlink path loss measurement. Further, the reference point for path loss measurement may be set independently of the transmission point and the reception point.
  • TP Transmission
  • RP reception point
  • the downlink transmission point and the uplink reception point can be path loss reference points (Pathloss Reference Point, Reference Point) for downlink path loss measurement. Further, the reference point for path loss measurement may be set independently of the transmission point and the reception point.
  • a small cell, a phantom cell, or a local area cell may be set as the third cell. Further, the small cell, the phantom cell, and the local area cell may be reset as the primary cell. Further, the small cell, the phantom cell, and the local area cell may be reset as a secondary cell. The small cell, phantom cell, and local area cell may be reconfigured as a serving cell. Further, the small cell, the phantom cell, and the local area cell may be included in the serving cell.
  • some physical channels / physical signals may not be transmitted in a component carrier corresponding to a serving cell or a small cell set as a small cell or a small cell.
  • a cell-specific reference signal CRS: “Cell specific Reference Signal (s)
  • a physical downlink control channel PUCCH:“ Physical ”Downlink“ Control ”Channel
  • a new physical channel / physical signal may be transmitted in a component carrier corresponding to a serving cell or a small cell set as a small cell or a small cell.
  • the base station device 1 transmits information related to the first setting and / or information related to the second setting to the terminal device 2.
  • the terminal device 2 receives the information on the first setting or the information on the second setting (that is, sets either the information on the first setting or the information on the second setting)
  • the terminal device 2 Perform uplink power control.
  • the terminal device 1 receives information related to the first setting and information related to the second setting (that is, sets information related to the first setting and information related to the second setting)
  • the terminal device 1 The uplink power control or the second uplink power control is performed. For example, in order to perform the second uplink power control, the terminal device 2 may need to receive information related to the second uplink power control.
  • the terminal device 2 performs the second uplink power control. For example, when information related to the second uplink power control is transmitted from the base station device 1, the terminal device 2 performs the second uplink power control, and the base station device 1 relates to the second uplink power control. When the information is not transmitted, the terminal device 2 does not perform the second uplink power control. At this time, the terminal apparatus 2 sets the transmission power of the uplink signal based on the first uplink power control.
  • FIG. 1 is a schematic block diagram showing the configuration of the base station apparatus 1 of the present invention.
  • the base station apparatus 1 includes an upper layer processing unit 101, a control unit 103, a reception unit 105, a transmission unit 107, a channel measurement unit 109, and a transmission / reception antenna 111.
  • the reception unit 105 includes a decoding unit 1051, a demodulation unit 1053, a demultiplexing unit 1055, and a wireless reception unit 1057. Further, the reception processing of the base station apparatus 1 is performed by the higher layer processing unit 101, the control unit 103, the receiving unit 105, and the transmission / reception antenna 111.
  • 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. Also, the transmission processing of the base station apparatus 1 is performed by the higher layer processing unit 101, the control unit 103, the transmission unit 107, and the transmission / reception antenna 111.
  • the upper layer processing unit 101 includes a medium access control (MAC: Medium Access Control) layer, a packet data integration protocol (PDCP: Packet Data Convergence Protocol) layer, a radio link control (RLC: Radio Link Control) layer, and a radio resource control (RRC). : (Radio Resource Control) layer processing.
  • MAC Medium Access Control
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • RRC radio resource control
  • the upper layer processing unit 101 generates information acquired in each downlink channel or acquires it from the upper node and outputs the information to the transmission unit 107. Also, the higher layer processing unit 101 allocates a radio resource in which the terminal apparatus 2 arranges a physical uplink shared channel (PUSCH: “Physical” Uplink “Shared” Channel), which is uplink data information, from among the uplink radio resources. Further, the upper layer processing unit 101 determines a radio resource in which a physical downlink shared channel (PDSCH: Physical Downlink Shared Channel), which is downlink data information, is arranged from downlink radio resources. The upper layer processing unit 101 generates downlink control information indicating the radio resource allocation, and transmits the downlink control information to the terminal device 2 via the transmission unit 107.
  • PUSCH Physical Uplink shared channel
  • PDSCH Physical Downlink Shared Channel
  • the upper layer processing unit 101 When allocating radio resources for arranging PUSCH, the upper layer processing unit 101 preferentially allocates radio resources with good channel quality based on the uplink channel measurement result input from the channel measurement unit 109. That is, the higher layer processing section 101 sets information related to various downlink signal settings and information related to various uplink signal settings for a certain terminal device or a certain cell. Further, the upper layer processing section 101 may set information related to various downlink signal settings and information related to various uplink signal settings for each cell. Further, the higher layer processing section 101 may set information regarding the setting of various downlink signals and information regarding the setting of various uplink signals for each terminal device.
  • the upper layer processing unit 101 performs information on the first setting to information on the nth setting (n is a natural number) for a certain terminal device 2 or a certain cell, that is, specific to the terminal device and / or cell. May be set and transmitted to the terminal device 2 via the transmission unit 107.
  • the information regarding the setting of the downlink signal and / or the uplink signal may include a parameter regarding resource allocation.
  • the information regarding the setting of a downlink signal and / or an uplink signal may include a parameter used for sequence calculation.
  • radio resources include time-frequency resources, subcarriers, resource elements (RE: Resource Element), resource element groups (REG: Resource Element Group), control channel elements (CCE: Control Channel Element), resource blocks (RB: (Resource Block), resource block group (RBG: Resource Block Group), etc.
  • These setting information and control information may be defined as information elements. Further, these setting information and control information may be defined as an RRC message. Moreover, you may transmit these setting information and control information to the terminal device 2 by system information. Moreover, you may transmit these setting information and control information to the terminal device 2 by exclusive signaling.
  • the upper layer processing unit 101 sets at least one TDD UL / DL setting (TDDTDUL / DL configuration (s), TDD config, tdd-Config, uplink-downlink configuration (s)) in the system information block type 1.
  • the TDD UL / DL setting may be defined as shown in FIG. You may show the structure of TDD by setting an index. Further, the second TDD UL / DL setting may be set as a downlink reference. Further, a plurality of types of system information blocks may be prepared.
  • the system information block type 1 includes information elements related to TDD UL / DL settings.
  • the system information block type 2 includes information elements related to radio resource control. Note that a parameter related to an information element may be included as an information element in a certain information element. For example, what is called a parameter in the physical layer may be defined as an information element in the upper layer.
  • ID identifier, identification code, identification number
  • the ID (UEID) set uniquely for the terminal includes C-RNTI (Cell Radio Network Temporary Identifier), SPS C-RNTI (Semi-persistent Scheduling C-RNTI), Temporary C-RNTI, TPC-PUSCH RNTI, TPC-PUCCH. There are random values for RNTI, contention resolution. These IDs are used in cell units. These IDs are set by the upper layer processing unit. Further, the upper layer processing unit 101 sets various identifiers for the terminal device 2 and notifies the terminal device 2 via the transmission unit 107. For example, RNTI is set and notified to the terminal device 2.
  • an ID corresponding to a physical cell ID, a virtual cell ID, or a virtual cell ID is set and notified.
  • an ID corresponding to a virtual cell ID there are IDs (PUSCH ID, PUCCH ID, scrambling initialization ID, reference signal ID (RSID), etc.) that can be set unique to the physical channel.
  • the physical cell ID and the virtual cell ID may be used for generating a physical channel and physical signal sequence.
  • the upper layer processing unit 101 uses the uplink control information (UCI: Uplink Control Information) notified from the terminal device 2 through the physical uplink control channel (PUCCH: Physical Uplink Control Channel) and the buffer notified from the terminal device 2 Control information is generated to control the receiving unit 105 and the transmitting unit 107 based on the situation and various setting information (RRC message, system information, parameter, information element) of each terminal device 2 set by the upper layer processing unit 101 And output to the control unit 103.
  • the UCI includes at least one of ACK / NACK, scheduling request (SR: Scheduling Request), and channel state information (CSI: ChannelState Information).
  • the CSI includes at least one of CQI, PMI, and RI.
  • the higher layer processing unit 101 sets parameters related to transmission power and transmission power of uplink signals (PRACH, PUCCH, PUSCH, UL DMRS, P-SRS, and A-SRS). Also, the higher layer processing section 101 sends parameters related to transmission power and transmission power of downlink signals (CRS, DL DMRS, CSI-RS, PDSCH, PDCCH / EPDCCH, etc.) to the terminal device 2 via the transmission section 107. Send. That is, the higher layer processing unit 101 transmits information on uplink and downlink power control to the terminal device 2 via the transmission unit 107. In other words, upper layer processing section 101 sets information related to transmission power control of base station apparatus 1 and terminal apparatus 2.
  • uplink signals PRACH, PUCCH, PUSCH, UL DMRS, P-SRS, and A-SRS.
  • the higher layer processing section 101 sends parameters related to transmission power and transmission power of downlink signals (CRS, DL DMRS, CSI-RS, PDSCH, PDCCH / EPDCCH
  • the upper layer processing unit 101 transmits a parameter related to the transmission power of the base station device 1 to the terminal device 2. Further, the upper layer processing unit 101 transmits a parameter related to the maximum transmission power of the terminal device 2 to the terminal device 2. Further, the upper layer processing unit 101 transmits information regarding transmission power control of various physical channels to the terminal device 2. The upper layer processing unit 101 also includes information indicating the amount of interference from the adjacent base station device, information indicating the amount of interference given to the adjacent base station device 1 notified from the adjacent base station device, and channel measurement. Depending on the quality of the channel input from the unit 109, the transmission power of the terminal device 2 is set so that the PUSCH and the like satisfy a predetermined channel quality, and interference with the adjacent base station device 1 is considered. Is transmitted to the terminal device 2 via the transmission unit 107.
  • upper layer processing section 101 uses standard power for each of PUSCH and PUCCH as information shared between terminal devices (shared information regarding uplink power control) or information set as a parameter common between terminal devices.
  • ( PO_NOMINAL_PUSCH , PO_NOMINAL_PUCCH ), channel loss compensation coefficient (attenuation coefficient) ⁇ , power offset for message 3, power offset defined for each PUCCH format, and the like are transmitted as system information.
  • the power offset of PUCCH format 3 and the power offset of delta PUCCH format 1bCS may be added and notified. Further, these pieces of shared information may be notified by an RRC message.
  • the higher layer processing section 101 includes, as information that can be set for each terminal apparatus 2 (dedicated information related to uplink power control), terminal apparatus specific PUSCH power P 0_UE_PUSCH , delta MCS enabled, accumulable, terminal apparatus specific PUCCH power,
  • the P-SRS power offset and filter coefficient are notified by the RRC message.
  • a transmission diversity power offset and an A-SRS power offset in each PUCCH format may be notified.
  • ⁇ described here is used to set the transmission power together with the path loss value, and is a coefficient representing the degree of compensation for the path loss, in other words, how much the transmission power is increased or decreased according to the path loss (that is, how much transmission power is transmitted).
  • ⁇ usually takes a value from 0 to 1. If 0, power compensation according to the path loss is not performed. If it is 1, the transmission power of the terminal device 2 is compensated to prevent the base station device 1 from affecting the path loss. To do. These pieces of information may be transmitted to the terminal device 2 as reset information.
  • the higher layer processing unit 101 may set a downlink signal / uplink signal transmission power or a parameter related to transmission power for each terminal device 2. Further, the upper layer processing section 101 may set a downlink / uplink signal transmission power common to terminal apparatuses or a parameter related to transmission power. Information regarding these parameters may be transmitted to the terminal device 2 as information regarding uplink power control and / or information regarding downlink power control.
  • the upper layer processing unit 101 sets various IDs related to various physical channels / physical signals, and outputs information related to ID setting to the receiving unit 105 and the transmitting unit 107 via the control unit 103.
  • the higher layer processing unit 101 sets a value of RNTI (UEID) for scrambling the CRC included in the downlink control information format.
  • UEID RNTI
  • the upper layer processing unit 101 includes C-RNTI (Cell Radio Network Temporary Identifier), Temporary C-RNTI, P-RNTI (Paging-RNTI), RA-RNTI (Random Access-RNTI), SPS C-RNTI (Semi
  • Various identifier values such as -Persistent (Scheduling C-RNTI) may be set.
  • the upper layer processing unit 101 sets ID values such as a physical cell ID, a virtual cell ID, and a scramble initialization ID.
  • Such setting information is output to each processing unit via the control unit 103.
  • these setting information may be transmitted to the terminal device 2 as an RRC message, system information, dedicated information unique to the terminal device, and information elements.
  • some RNTIs may be transmitted using MAC CE (Control Element).
  • the control unit 103 generates a control signal for controlling the reception unit 105 and the transmission unit 107 based on the control information from the higher layer processing unit 101.
  • the control unit 103 outputs the generated control signal to the reception unit 105 and the transmission unit 107 to control the reception unit 105 and the transmission unit 107.
  • the receiving unit 105 separates, demodulates and decodes the received signal received from the terminal device 2 via the transmission / reception antenna 111 according to the control signal input from the control unit 103, and outputs the decoded information to the higher layer processing unit 101.
  • the radio reception unit 1057 converts an uplink signal received via the transmission / reception antenna 111 into an intermediate frequency (IF: Intermediate Frequency) (down-conversion), removes unnecessary frequency components, and appropriately maintains the signal level.
  • IF Intermediate Frequency
  • the amplification level is controlled, and based on the in-phase and quadrature components of the received signal, quadrature demodulation is performed, and the quadrature demodulated analog signal is converted into a digital signal.
  • Radio receiving section 1057 removes a portion corresponding to a guard interval (GI: Guard Interval) from the converted digital signal.
  • the radio reception unit 1057 performs fast Fourier transform (FFT: Fast Fourier ⁇ Transform) on the signal from which the guard interval is removed, extracts a frequency domain signal, and outputs the signal to the demultiplexing unit 1055.
  • FFT Fast Fourier transform
  • the demultiplexing unit 1055 separates the signal input from the wireless receiving unit 1057 into signals such as PUCCH, PUSCH, UL DMRS, SRS, and the like. This separation is performed based on radio resource allocation information that is determined in advance by the base station device 1 and notified to each terminal device 2. Further, demultiplexing section 1055 compensates for the transmission paths of PUCCH and PUSCH from the estimated values of the transmission paths input from channel measurement section 109. Further, the demultiplexing unit 1055 outputs the separated UL DMRS and SRS to the channel measurement unit 109.
  • the demodulating unit 1053 performs inverse discrete Fourier transform (IDFT: Inverse Discrete Fourier Transform) on the PUSCH, obtains modulation symbols, and performs two-phase shift keying (BPSK: Binary Phase Shift Keying) on each of the PUCCH and PUSCH modulation symbols. ) Four-phase phase shift keying (QPSK: Quadrature Phase Shift Keying), 16-value quadrature amplitude modulation (16QAM: 16 Quadrature Amplitude Modulation), 64-value quadrature amplitude modulation (64QAM: 64 Quadrature Amplitude Modulation), etc.
  • the base station apparatus 1 demodulates the received signal using a modulation scheme notified in advance to each terminal apparatus 2 by downlink control information.
  • the decoding unit 1051 outputs the demodulated PUCCH and PUSCH encoded bits in a predetermined encoding method in advance, or the base station apparatus 1 transmits in advance to the terminal apparatus 2 with an uplink grant (UL (grant). Decoding is performed at the notified coding rate, and the decoded data information and uplink control information are output to the upper layer processing section 101.
  • UL uplink grant
  • Channel measurement section 109 measures an estimated value of the transmission path, channel quality, and the like from uplink demodulation reference signals UL DMRS and SRS input from demultiplexing section 1055, and outputs them to demultiplexing section 1055 and higher layer processing section 101 To do. Further, channel measuring section 109 measures the received power and / or received quality of the first signal to the nth signal, and outputs them to demultiplexing section 1055 and higher layer processing section 101.
  • the transmission unit 107 generates a downlink reference signal (downlink reference signal) according to the control signal input from the control unit 103, and encodes the data information and downlink control information input from the higher layer processing unit 101. And PDCCH (EPDCCH), PDSCH, and a downlink reference signal are multiplexed, and a downlink signal is transmitted to the terminal apparatus 2 via the transmission / reception antenna 111.
  • a downlink reference signal (downlink reference signal)
  • the encoding unit 1071 performs encoding such as turbo encoding, convolutional encoding, and block encoding on the downlink control information and data information 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 is obtained by a predetermined rule based on a cell identifier (Cell ID, Cell Identity, Cell Identifier, Cell Identification) or the like for identifying the base station device 1, and the terminal device 2 is known As a downlink reference signal.
  • the multiplexing unit 1075 multiplexes each modulated channel and the generated downlink reference signal.
  • the wireless transmission unit 1077 performs inverse fast Fourier transform (IFFT: Inverse Fast Fourier Transform) 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 transmission / reception antenna 111 for transmission.
  • IFFT Inverse Fast Fourier Transform
  • FIG. 2 is a schematic block diagram showing the configuration of the terminal device 2 according to the present embodiment.
  • the terminal device 2 includes an upper layer processing unit 201, a control unit 203, a reception unit 205, a transmission unit 207, a channel measurement unit 209, and a transmission / reception antenna 211.
  • the reception unit 205 includes a decoding unit 2051, a demodulation unit 2053, a demultiplexing unit 2055, and a wireless reception unit 2057.
  • the reception processing of the terminal station apparatus 2 is performed by the upper layer processing unit 201, the control unit 203, the receiving unit 205, and the transmission / reception antenna 211.
  • the transmission unit 207 includes an encoding unit 2071, a modulation unit 2073, a multiplexing unit 2075, and a wireless transmission unit 2077.
  • the transmission processing of the terminal device 2 is performed by the higher layer processing unit 201, the control unit 203, the transmission unit 207, and the transmission / reception antenna 211.
  • the upper layer processing unit 201 outputs uplink data information generated by a user operation or the like to the transmission unit.
  • the upper layer processing unit 201 includes a medium access control (MAC: Medium Access Control) layer, a packet data integration protocol (PDCP: Packet Data Convergence Protocol) layer, a radio link control (RLC: Radio Link Control) layer, and radio resource control. Process the (RRC: Radio Resource Control) layer.
  • MAC Medium Access Control
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • RRC Radio Resource Control
  • the upper layer processing unit 201 manages various setting information of the own station. Further, the upper layer processing unit 201 generates information to be arranged in each uplink channel and outputs the information to the transmission unit 207.
  • the upper layer processing unit 201 includes various setting information of the own station managed by the upper layer processing unit 201 set by the downlink control information notified by the PDCCH from the base station apparatus 1 and the radio resource control information notified by the PDSCH. Based on the control information, control information is generated to control the reception unit 205 and the transmission unit 207, and is output to the control unit 203. Further, the upper layer processing unit 201 sets various parameters (information element, RRC message) of each signal based on information on the n-th setting from information on the first setting notified from the base station apparatus 1. . In addition, the set information is generated and output to the transmission unit 207 via the control unit 203.
  • the upper layer processing unit 201 includes a sounding subframe (SRS subframe, SRS transmission subframe) that is a subframe for reserving a radio resource for transmitting the SRS broadcasted by the base station apparatus 1, and a sounding subframe.
  • SRS subframe SRS transmission subframe
  • the upper layer processing unit 201 controls SRS transmission according to the information. Specifically, the upper layer processing unit 201 controls the transmission unit 207 to transmit the periodic SRS once or periodically according to the information related to the periodic SRS.
  • the upper layer processing unit 201 determines the aperiodic SRS in advance according to information about the aperiodic SRS. Is transmitted only once (for example, once).
  • Upper layer processing section 201 controls transmission power of PRACH, PUCCH, PUSCH, periodic SRS, and aperiodic SRS based on information related to transmission power control of various uplink signals transmitted from base station apparatus 1. To do. Specifically, the upper layer processing unit 201 sets various uplink signal transmission powers based on various uplink power control information acquired from the reception unit 205. For example, the transmission power of SRS is P 0_PUSCH , ⁇ , power offset P SRS_OFFSET (0) for periodic SRS (first power offset (pSRS-Offset)), power offset P SRS_OFFSET (1 for aperiodic SRS) ) (Second power offset (pSRS-OffsetAp)) and the TPC command.
  • the upper layer processing unit 201 switches between the first power offset and the second power offset in accordance with P SRS_OFFSET depending on whether it is a periodic SRS or an aperiodic SRS. Further, when the third power offset is set for the periodic SRS and / or the aperiodic SRS, the upper layer processing unit 201 sets the transmission power based on the third power offset. Note that the value of the third power offset may be set in a wider range than the first power offset and the second power offset. The third power offset may be set for each of the periodic SRS and the aperiodic SRS. That is, the information related to uplink power control is parameters (information elements, RRC messages) related to control of transmission power of various uplink physical channels.
  • the upper layer processing section 201 uses the maximum transmission power (the total transmission power of the first uplink reference signal and the transmission power of the physical uplink shared channel) set in the terminal device 2 in a certain serving cell and a certain subframe ( For example, if P CMAX ) is exceeded, the instruction information is output to the transmission unit 207 via the control unit 203 so as to transmit the physical uplink shared channel. Further, the upper layer processing section 201 determines the maximum transmission power at which the sum of the transmission power of the first uplink reference signal and the transmission power of the physical uplink control channel is set in the terminal device 2 in a certain serving cell and a certain subframe. When exceeding, the instruction information is output to the transmission unit 207 via the control unit 203 so as to transmit the physical uplink control channel.
  • the upper layer processing section 201 determines the maximum transmission power at which the sum of the transmission power of the second uplink reference signal and the transmission power of the physical uplink shared channel is set in the terminal device 2 in a certain serving cell and a certain subframe. When exceeding, the instruction information is output to the transmission unit 207 via the control unit 203 so as to transmit the physical uplink shared channel. Further, the upper layer processing section 201 determines the transmission power of the second uplink reference signal and the transmission power of the physical uplink control channel in a certain serving cell (for example, serving cell c) and a certain subframe (for example, subframe i). When the total exceeds the maximum transmission power set in the terminal apparatus 2, the instruction information is output to the transmission unit 207 via the control unit 203 so as to transmit the physical uplink control channel.
  • a certain serving cell for example, serving cell c
  • a certain subframe for example, subframe i
  • the upper layer processing unit 201 controls transmission power of various physical channels according to the priority of the various physical channels. It is also possible to control the transmission of various physical channels.
  • Upper layer processing section 201 outputs the control information to transmission section 207 via control section 203.
  • the higher layer processing unit 201 controls transmission power of various physical channels according to the priority of the physical channels. It is also possible to control transmission of various physical channels. Further, the upper layer processing unit 201 may perform transmission control of various physical channels transmitted from the cell according to the priority of the cell. Upper layer processing section 201 outputs the control information to transmission section 207 via control section 203.
  • the higher layer processing unit 201 sends instruction information to the transmission unit 207 via the control unit 203 so as to generate an uplink reference signal based on the information related to the setting of the uplink reference signal notified from the base station apparatus 1. Output. That is, the reference signal control unit 2013 outputs information related to the setting of the uplink reference signal to the uplink reference signal generation unit 2079 via the control unit 203.
  • the control unit 203 generates a control signal for controlling the receiving unit 205 and the transmitting unit 207 based on the control information from the higher layer processing unit 201.
  • the control unit 203 outputs the generated control signal to the reception unit 205 and the transmission unit 207, and controls the reception unit 205 and the transmission unit 207.
  • the receiving unit 205 separates, demodulates, and decodes the received signal received from the base station apparatus 1 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 receiving unit 205 performs an appropriate reception process depending on whether or not information related to the first setting and / or information related to the second setting is received. For example, when one of the information related to the first setting and the information related to the second setting is received, the first control information field is detected from the received downlink control information format, and the first When the information related to the setting and the information related to the second setting are received, the second control information field is detected from the received downlink control information format.
  • the radio reception unit 2057 converts a downlink signal received via each reception antenna into an intermediate frequency (down-conversion), removes unnecessary frequency components, and an amplification level so that the signal level is appropriately maintained. , And quadrature demodulation based on the in-phase and quadrature components of the received signal, and converting the quadrature demodulated analog signal into a digital signal.
  • the radio 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 a physical downlink control channel (PDCCH: Physical Downlink Control Channel), a PDSCH, and a downlink reference signal (DRS: Downlink Reference Signal). This separation is performed based on radio resource allocation information notified by the downlink control information. Further, demultiplexing section 2055 compensates for the transmission paths of PDCCH and PDSCH from the estimated value of the transmission path input from channel measurement section 209. Also, the demultiplexing unit 2055 outputs the separated downlink reference signal to the channel measurement unit 209.
  • PDCCH Physical Downlink Control Channel
  • DRS Downlink Reference Signal
  • 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 control information such as QPSK, 16QAM, and 64QAM, and outputs the result to decoding section 2051.
  • the decoding unit 2051 performs decoding on the coding rate notified by the downlink control information, and outputs the decoded data information to the higher layer processing unit 201.
  • the channel measurement unit 209 measures the downlink path loss from the downlink reference signal input from the demultiplexing unit 2055, and outputs the measured path loss to the higher layer processing unit 201. Further, channel measurement section 209 calculates an estimated value of the downlink transmission path from the downlink reference signal, and outputs it to demultiplexing section 2055. In addition, the channel measurement unit 209 receives the first signal and / or the second signal according to various information related to the measurement notified from the reference signal control unit 2013 via the control unit 203 and various information related to the measurement report. Measure power and receive quality. The result is output to the upper layer processing unit 201.
  • the channel measurement unit 209 may output the result regarding the channel evaluation of each signal to the upper layer processing unit 201.
  • the first signal and the second signal are reference signals (pilot signal, pilot channel, reference signal), and the third signal and the fourth signal in addition to the first signal and the second signal. There may be. That is, the channel measurement unit 209 measures one or more signal channels. Further, the channel measurement unit 209 sets a signal for channel measurement according to the notified control information from the higher layer processing unit 201 via the control unit 203.
  • the transmission unit 207 generates an uplink demodulation reference signal (UL DMRS) and / or a sounding reference signal (SRS) according to the control signal (control information) input from the control unit 203, and is input from the higher layer processing unit 201.
  • Data information is encoded and modulated, PUCCH, PUSCH, and the generated UL DMRS and / or SRS are multiplexed, the transmission power of PUCCH, PUSCH, UL DMRS, and SRS is adjusted, and the base station is set via transmission / reception antenna 211. Transmit to the station apparatus 1.
  • the transmission part 207 transmits to the base station apparatus 1 via the transmission / reception antenna 211, when the information regarding a measurement result is output from the upper layer process part 201.
  • the transmission unit 207 feeds back the channel state information to the base station apparatus 1. That is, the higher layer processing unit 201 generates channel state information (CSI, CQI, PMI, RI) based on the measurement result notified from the channel measurement unit 209 and feeds back to the base station apparatus 1 via the control unit 203. To do.
  • CSI channel state information
  • CQI channel state information
  • PMI PMI
  • RI channel state information
  • the transmitting unit 207 receives the first setting information or the second setting information in the receiving unit 205, and performs the first uplink power control when the receiving unit 205 sets the information. In 205, when information related to the first setting and information related to the second setting are received and set, second uplink power control is performed and an uplink signal is transmitted.
  • the encoding unit 2071 performs encoding such as turbo encoding, convolutional encoding, and block encoding on the uplink control information and data information 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 an uplink reference signal based on information related to the setting of the uplink reference signal. That is, the uplink reference signal generation unit 2079 has a cell identifier for identifying the base station apparatus 1, an uplink demodulation reference signal, a bandwidth for arranging the first uplink reference signal, the second uplink reference signal, and the like. Based on the above, the base station apparatus 1 obtains a known CAZAC sequence which is determined by a predetermined rule. Further, the uplink reference signal generation unit 2079 is configured to generate a CAZAC sequence of the generated uplink demodulation reference signal, the first uplink reference signal, and the second uplink reference signal according to the control signal input from the control unit 203. Give a click shift.
  • the uplink reference signal generation unit 2079 may initialize the reference sequence of the uplink demodulation reference signal and / or the sounding reference signal and the uplink reference signal based on a predetermined parameter.
  • the predetermined parameter may be the same parameter for each reference signal.
  • the predetermined parameter may be a parameter set independently for each reference signal. That is, the uplink reference signal generation unit 2079 can initialize the reference sequence of each reference signal with the same parameters if there are no independently set parameters.
  • the multiplexing unit 2075 rearranges the PUSCH modulation symbols in parallel according to the control signal input from the control unit 203, and then performs discrete Fourier transform (DFT: Discrete Fourier Transform) to generate the PUCCH and PUSCH signals and the generated UL DMRS and Multiplex SRS.
  • 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, Frequency) signal (up-conversion), remove excess frequency components, amplify the power, and output to the transmission / reception antenna 211 for transmission.
  • FIG. 4 is a flowchart showing a processing procedure of the terminal device 2 according to the basic form of the first embodiment.
  • the terminal device 2 identifies whether the condition A or the condition B is satisfied based on the information transmitted from the base station device 1 (step S401).
  • the terminal device 2 performs the first uplink power control when the condition A is satisfied (step S402).
  • the terminal device 2 performs second uplink power control (step S403).
  • the first uplink power control and the second uplink power control are applied to all uplink subframes.
  • condition A is that the terminal device 2 receives and sets only one of the information on the first setting or the information on the second setting
  • condition B is that the terminal device 2 Receiving and setting information relating to the setting of 1 and information relating to the second setting.
  • the base station device 1 transmits information related to the first setting and / or information related to the second setting to the terminal device 2. Further, the base station apparatus 1 uses the downlink control information (DCI) format for the terminal apparatus 2 that sets only one of the information related to the first setting and the information related to the second setting. A field related to a first transmit power control (TPC) command can be set and transmitted. Also, the base station apparatus 1 sets the field related to the second TPC command in the DCI format and transmits it to the terminal apparatus 2 that sets the information related to the first setting and the information related to the second setting. Can do.
  • DCI downlink control information
  • TPC transmit power control
  • the terminal apparatus 2 When receiving information related to the first setting or information related to the second setting, the terminal apparatus 2 receives a field related to the TPC command associated with the DCI format transmitted from the base station apparatus 1 as a field related to the first TPC command.
  • a field related to the TPC command associated with the DCI format transmitted from the base station apparatus 1 as a field related to the first TPC command.
  • demodulation / decoding processing, signal detection processing, information extraction processing transmission power control of the uplink signal based on the first TPC command, information on the first setting and information on the second setting Is received as a field related to the second TPC command in accordance with the DCI format transmitted from the base station apparatus 1, and based on the second TPC command, the transmission power of the uplink signal is received.
  • the difference between the first uplink power control and the second uplink power control is included in the downlink control information (DCI: Downlink Control Information) format. It may be whether or not to extend the field related to the transmitted power control (TPC: “Transmit” Power “Control”) command. That is, the bit size (number of bits) constituting the field related to the TPC command is different between the first uplink power control and the second uplink power control.
  • the field related to the TPC command may be configured with 2 bits in the first uplink power control, and may be configured with 3 bits in the second uplink power control.
  • the terminal device 2 recognizes that the field related to the TPC command is expanded, performs demodulation / decoding processing, and performs uplink power control.
  • the terminal device 2 can dynamically control power correction in a wider range than before the expansion. Since the bit size shown here is an example, it may be expanded with a bit size different from this example.
  • the terminal device 2 when the information related to the first setting and the information related to the second setting are set, the terminal device 2 includes a field related to a transmission power control (TPC: Transmit Power Control) command. May be recognized as expanded.
  • expansion of the field related to the TPC command includes expansion of the number of bits allocated to the field related to the TPC command.
  • the fact that the field related to the TPC command is expanded means that the power correction value that can be set can be set to a higher value or a lower value than the value that can be selected by the TPC command before the TPC command is expanded. Including becoming. That is, the number of bits constituting the field related to the TPC command does not change, and the settable value changes.
  • the information related to the first setting and the information related to the second setting may be set in the same RRC message (or system information) and transmitted to the terminal device 2. Further, the information related to the first setting and the information related to the second setting may be set in different RRC messages (or system information) and transmitted to the terminal device 2. Further, the information related to the first setting and the information related to the second setting are set as different information elements (parameters). That is, when the terminal device 2 sets the information on the first setting and the information on the second setting, the terminal device 2 can demodulate and decode the field related to the extended TPC command, and extend the range of the uplink power control. Can do. That is, the terminal apparatus 2 can dynamically perform a wider range (larger) power correction in units of subframes.
  • the terminal device 2 may be set in advance with a table related to the first TPC command and a table related to the second TPC command.
  • 5 and 6 show an example of the configuration of the TPC command indicated by the field related to the first TPC command and the field related to the second TPC command.
  • FIG. 5 shows a case where the bit size (number of bits) is expanded in the field related to the first TPC command and the field related to the second TPC command. By expanding the bit size, it is possible to perform power correction in more stages and in a wider range in the field related to the second TPC command.
  • the field related to the first TPC command and the field related to the second TPC command are configured with the same bit size, but selectable power correction values are different. At least one power correction value that can be set in the field related to the first TPC command and the field related to the second TPC command is different.
  • the terminal device 2 When the TPC command is extended by setting the information related to the first setting and the information related to the second setting, the terminal device 2 has a DCI format including the extended TPC command field in the terminal-specific search area of the PDCCH. It is mapped to at least one of (USS: UE-specific Search Space), EPDCCH shared search area (CSS: Common Search Space), and EPDCCH USS.
  • USS UE-specific Search Space
  • SCSS Common Search Space
  • EPDCCH USS EPDCCH USS.
  • the upper layer processing unit of the base station apparatus 1 may transmit a DCI format with an extended TPC command to the terminal apparatus 2 that can set information related to the second setting.
  • the base station apparatus 1 relates to the field related to the first TPC command and the second TPC command in the same DCI format for the terminal apparatus 2 in which the information related to the first setting and the information related to the second setting are set. Fields may be set and transmitted. Also, the base station apparatus 1 sets the field related to the first TPC command in the same DCI format to the terminal apparatus 2 in which the information related to the first setting and the information related to the second setting are set. You may set and send as a field. That is, the base station apparatus 1 may replace the field related to the first TPC command with the field related to the second TPC command for transmission.
  • the base station apparatus 1 sets a part of the control information field as a field related to the second TPC command for the terminal apparatus 2 in which the information related to the first setting and the information related to the second setting are set. You may send it.
  • the terminal device 2 can detect a field related to the second TPC command from the DCI format set by the base station device 1. Whether or not the second TPC command can be applied may be indicated by control information different from the information related to the first setting and the information related to the second setting.
  • the base station device 1 transmits information related to the first setting and / or information related to the second setting to the terminal device 2.
  • the base station apparatus 1 sets a predetermined power offset in a downlink control information (DCI: Downlink Control Information) format for the terminal apparatus 2 that sets information related to the first setting and information related to the second setting.
  • DCI Downlink Control Information
  • a field indicating whether to apply to uplink power can be set and transmitted.
  • the base station apparatus 1 transmits the information regarding a predetermined
  • the terminal device 2 When receiving information related to the first setting and information related to the second setting, the terminal device 2 adds a field indicating whether or not to apply a predetermined power offset to the uplink power in the DCI format. And the DCI format reception processing (demodulation / decoding processing, detection processing) is performed. When it is instructed to apply a predetermined power offset in the field, the terminal apparatus 2 sets the transmission power of the uplink signal in consideration of the predetermined power offset, and sets the uplink signal to the base station apparatus 1. Send to.
  • the predetermined power offset is a power ratio of transmission power of uplink signals transmitted in a first subframe subset and a second subframe subset.
  • the predetermined power offset may be a power difference between transmission powers of uplink signals transmitted in the first subframe subset and the second subframe subset.
  • the predetermined power offset is a power ratio between the transmission power set by the first uplink power control and the transmission power set by the second uplink power control.
  • the predetermined power offset is a power difference between the transmission power set by the first uplink power control and the transmission power set by the second uplink power control. When the predetermined power offset is 0, the transmission power set by the first uplink power control and the transmission power set by the second uplink power control may be the same.
  • the difference between 1st uplink power control and 2nd uplink power control May be whether or not a field indicating whether or not a predetermined power offset is applied to uplink power is added to the DCI format. That is, when the terminal apparatus 2 sets information related to the second setting in addition to information related to the first setting, a field for instructing whether or not to apply a predetermined power offset to the uplink power is added to the DCI format. And the reception process is performed. When instructed to apply the predetermined power offset to the uplink power, the terminal device 2 sets the uplink power in consideration of the predetermined power offset.
  • the predetermined power offset may be notified to the terminal device 2 by being included in the RRC message (information element), and at this time, the field is set as a 1-bit on / off trigger bit.
  • the predetermined power offset may be set according to a field indicating whether or not the predetermined power offset is applied to the uplink power. That is, a new field related to uplink power control is added to the DCI format.
  • the DCI format in which a new field is set is assigned to at least one of PDCCH or EPDCCH USS and EPDCCH CSS.
  • the base station device 1 transmits information related to the first setting and / or information related to the second setting to the terminal device 2. Further, the base station apparatus 1 sets the first uplink in the downlink control information (DCI: Downlink Control Information) format for the terminal apparatus 2 that sets the information related to the first setting and the information related to the second setting. A field for instructing switching between information on power control and information on second uplink power control is set and transmitted. When the base station apparatus 1 instructs the terminal apparatus 2 to apply information related to the first uplink power control in the field, the base station apparatus 1 transmits an uplink signal based on the information related to the first uplink power control.
  • DCI Downlink Control Information
  • the uplink is based on the information related to the second uplink power control to the terminal device 2 It can be controlled to set the transmission power of the signal.
  • the terminal device 2 receives the information on the first setting and the information on the second setting, the terminal device 2 adds the information on the first uplink power control and the second uplink to the DCI format transmitted from the base station device 1. Recognizing that a field for instructing switching of information relating to link power control is set, reception processing is performed, and transmission power of the uplink signal is controlled based on the instruction of the field. In addition, when this field is comprised with 2 bits or more, it can instruct
  • this field is composed of 2 bits
  • a first value for example, “00”
  • the transmission power of the uplink signal is determined based on the information related to the first uplink power control. If it is set and indicated by a second value (for example, “01”), the transmission power of the uplink signal is set based on information related to the second uplink power control, and a third value (for example, If it is indicated by “10”), the transmission power of the uplink signal is set based on information on the third uplink power control, and if indicated by a fourth value (for example, “11”).
  • the transmission power of the uplink signal may be set based on information related to the fourth uplink power control.
  • information on the fourth uplink power control is set in advance from information on the first uplink power control.
  • the information regarding the 4th uplink power control from the information regarding the 1st uplink power control may be notified to the terminal device 2 from the base station apparatus 1 by the RRC message.
  • the information regarding 1st uplink power control and the information regarding 2nd uplink power control are set to the terminal device 2, it is related with 1st setting.
  • the difference between the first uplink power control and the second uplink power control performed by setting the information and / or the information related to the second setting is the difference between the information related to the first uplink power control and the information related to the first uplink power control in the DCI format. It may be whether or not a field for instructing switching of information regarding the uplink power control of No. 2 is added. That is, in the second uplink power control, a field for instructing switching of information related to two uplink power controls is set in the DCI format.
  • the uplink transmission power is set based on the information related to the first uplink power control.
  • the value set in the field for instructing switching of information related to uplink power control is the second value (second index)
  • the uplink transmission power is set based on the information related to the second uplink power control.
  • the base station apparatus 1 transmits information related to the first uplink power control and information related to the second uplink power control to the terminal apparatus 2.
  • the information related to uplink power control includes at least one power control parameter related to an uplink signal (uplink physical channel).
  • the terminal device 2 when the terminal device 2 has not set the information related to the second uplink power control, the first uplink power control in the DCI format even if the information related to the first setting and the information related to the second setting are set. It is not recognized that a field for instructing switching between the information on the information and the information on the second uplink power control is added. Moreover, the terminal device 2 which has set only one of the information related to the first uplink power control and the information related to the second uplink power control does not expect to receive the information related to the second setting. .
  • the base station apparatus 1 sets a plurality of information on uplink power control for the terminal apparatus 2.
  • a plurality of pieces of information set may be information set unique to a cell. Further, the information set in plural may be information set unique to the terminal device. Further, the information set in plural may be information set specific to a cell and information set specific to a terminal. Further, the plurality of pieces of information to be set may be specific parameters included in information set in a cell-specific manner or information set in a terminal-specific manner.
  • the information on uplink power control includes at least one parameter or parameter set for controlling PUSCH transmission power, PUCCH transmission power, and SRS transmission power. That is, the parameter set in the information related to the first uplink power control may be substituted for the parameter not set in the information related to the second uplink power control.
  • different uplink power control between the first uplink power control and the second uplink power control switches parameters (sets) related to different cell-specific uplink power control to control the transmission power of the uplink signal. It is to be. Also, different transmission power control is to control the transmission power of uplink signals by switching parameters (sets) related to uplink power control unique to different terminals. Also, different transmission power control is to control uplink signal transmission power by switching parameters (sets) related to different cell-specific or terminal-specific uplink power control. Further, different uplink power control is to perform accumulation transmission power control in different loops.
  • FIG. 7 is a diagram illustrating an example of parameters included in information (UplinkPowerControl) related to first uplink power control.
  • Information related to the first uplink power control includes information set for each cell (shared information related to uplink power control (UplinkPowerControlCommon)) and information set for each terminal device. (Dedicated information on uplink power control (UplinkPowerControlDedicated)).
  • standard PUSCH power (p0-NominalPUSCH), which is PUSCH power that can be set for each cell, fractional transmission power control attenuation coefficient (transmission loss compensation coefficient) ⁇ (alpha), PUCCH that can be set for each cell Standard PUCCH power (p0-NominalPUCCH) that is power, power adjustment value (power offset) ⁇ F_PUCCH for each PUCCH format (deltaFList-PUCCH), power adjustment value (power offset) when preamble message 3 is transmitted (deltaPreambleMsg3 )
  • the dedicated information information indicating whether or not to consider the terminal-specific PUSCH power (p0-UE-PUSCH) that is PUSCH power that can be set unique to the terminal device and the power adjustment value K s according to the modulation and coding scheme (DeltaMCS-Enabled), information indicating whether or not accumulation transmission power control is possible (accumulationEnabled), terminal-specific PUCCH power (p0-UE-PUCCH) that is P
  • the dedicated information for the secondary cell may include a parameter (pathlossReferenceLinking) instructing to calculate the path loss using the reference signal for path loss measurement of the primary cell or the secondary cell.
  • pathlossReferenceLinking instructing to calculate the path loss using the reference signal for path loss measurement of the primary cell or the secondary cell.
  • FIG. 8 is a diagram illustrating an example of shared information regarding the second uplink power control.
  • the parameters included in the shared information related to the uplink power control for the second (for the primary cell) or the shared information related to the uplink power control for the second secondary cell may be set by including all the parameters shown in FIG. Good.
  • the information element included in the shared information related to the uplink power control for the second (for the primary cell) or the shared information related to the uplink power control for the second secondary cell is at least one of the parameters shown in FIG. May be included and set.
  • none of the parameters included in the shared information related to the uplink power control for the second (for the primary cell) or the shared information related to the uplink power control for the second secondary cell may be included.
  • the base station apparatus 1 selects release and transmits the shared information to the terminal 2.
  • the parameters that are not set in the shared information related to the second uplink power control may be set the same as the shared information related to the first uplink power control.
  • FIG. 9 is a diagram illustrating an example of dedicated information related to the first uplink power control and dedicated information related to the second uplink power control.
  • a path loss reference resource that indicates a downlink reference signal (downlink radio resource) for measuring a path loss may be set.
  • a path loss reference resource may be set in the dedicated information related to uplink power control for the second primary cell / secondary cell. All the parameters shown in FIG. 9 may be set as parameters included in the dedicated information related to the uplink power control for the second (for the primary cell) or the dedicated information related to the uplink power control for the second secondary cell.
  • the parameter included in the dedicated information related to the uplink power control for the second (for the primary cell) or the dedicated information related to the uplink power control for the second secondary cell is at least one of the parameters shown in FIG. It only has to be set. Also, none of the parameters included in the dedicated information related to the uplink power control for the second (for the primary cell) or the dedicated information related to the uplink power control for the second secondary cell may be set. In this case, the base station device 1 selects release and transmits the information to the terminal device 2. Further, the parameters that are not set in the dedicated information related to the second uplink power control may be set the same as the dedicated information related to the first uplink power control. That is, if the path loss reference resource is not set in the dedicated information related to the second uplink power control, the path loss is calculated based on the path loss reference resource set in the dedicated information related to the first uplink power control. You may do it.
  • the information related to the first uplink power control and the information related to the second uplink power control may be included in the same information element or the same RRC message and transmitted to the terminal device 2.
  • the base station apparatus 1 transmits the information regarding 1st setting and / or the information regarding 2nd setting to the terminal device 2.
  • the base station apparatus 1 sets the DCI format 3B instructing the TPC command extended to the DCI format 3 / 3A and transmits it to the terminal apparatus 2.
  • the terminal device 2 sets the information related to the first setting and the information related to the second setting, the terminal device 2 can read the received DCI format 3 / 3A as the DCI format 3B.
  • the terminal device 2 transmits an uplink signal based on the DCI format that indicates the TPC command before extension.
  • the transmission power of the uplink signal is set based on the DCI format indicating the expanded TPC command. Can do.
  • a TPC index is set independently of the DCI format 3 / 3A.
  • the DCI format 3B may be assigned only to the CSS of the EPDCCH. Further, the DCI format 3B may be allocated to the USS of PDCCH or EPDCCH.
  • the difference between the first uplink power control and the second uplink power control is whether or not a new DCI format related to the TPC command is set.
  • an identifier (TPC-RNTI) for identifying the DCI format related to the TPC command is set independently of the DCI format 3 / 3A, in contrast to the new DCI format related to the extended TPC command (DCI format 3B). Also good. Further, the TPC index of DCI format 3B may be set independently of DCI format 3 / 3A.
  • the terminal device 2 is common between different subframe subsets. Transmission power control can be performed.
  • the DCI format is expanded or one of the DCI formats is set. It can be recognized that a part field is replaced or a new field (control information field, control field, information bit field, bit field) is added to the DCI format.
  • the DCI format in which no new control information field is set is changed to the first DCI format.
  • the DCI format in which a new control information field is set is the second DCI format
  • the second DCI format is PDCCH (first downlink control channel region) and / or EPDCCH (second downlink control). It may be transmitted in a terminal-specific search area (USS: “UE-specific” Search “Space”) of the channel area. Further, the second DCI format may be transmitted in a shared search area (CSS: “Common” Search “Space”) of EPDCCH. That is, even when the information related to the first setting and the information related to the second setting are set in the terminal device 2, the first DCI format is transmitted by CSS of PDCCH.
  • the terminal device 2 performs appropriate transmission power control by switching the transmission power control of the uplink signal regardless of the setting of the transmission subframe. Can do.
  • the base station device 1 transmits information related to the first setting and / or information related to the second setting to the terminal device 2.
  • the terminal device 2 controls the transmission power of the uplink signal based on the first uplink power control,
  • the first subframe subset and the second subframe subset are configured based on the information related to the first setting and the information related to the second setting.
  • the transmission power of the uplink signal to be transmitted in the uplink subframe included in the subframe subset is set based on the first uplink power control, and is transmitted in the uplink subframe included in the second subframe subset.
  • the transmission power of the uplink signal is set based on the second uplink power control. Details of the information related to the first setting and the information related to the second setting will be described later.
  • FIG. 10 is a flowchart according to the basic form of the second embodiment.
  • the terminal device 2 identifies the first condition (step S1001). In the case of condition A, the terminal device 2 performs first uplink power control for all uplink subframes (step S1002). In the case of the condition B, the second condition is further identified (S1003). In the case of condition B1, the terminal device 2 performs the first uplink power control on the uplink subframe included in the first subframe sub-unset (S1004). In the case of condition B2, the terminal device 2 performs the second uplink power control on the uplink subframe included in the second subframe subset (step S1005).
  • condition A is a case where either one of the information related to the first setting or the information related to the second setting is set
  • condition B is the information related to the first setting and the second information. This is a case where information related to the setting is set.
  • condition B1 is a case where uplink power control is set for the uplink subframe of the first subframe subset
  • condition B2 is an uplink power for the uplink subframe of the second subframe subset. This is a case where control is set.
  • the first subframe subset and the second subframe subset may be configured from information related to the first setting and information related to the second setting.
  • a new control information field for uplink power control is set in the downlink control information format, in the second embodiment, it is set only for transmission for a specific subframe. That is, in the first uplink power control, no new control information field is set in the downlink control information format.
  • a new control information field is added to the downlink control information format corresponding to the uplink subframe included in the first subframe subset for the terminal device 2 that sets the information related to the first setting and the information related to the second setting. Is not set.
  • the terminal apparatus 2 that sets the information on the first setting and the information on the second setting has a new control in the downlink control information format corresponding to the uplink subframe included in the second subframe subset.
  • An information field may be set.
  • the base station device transmits information related to the first setting and / or information related to the second setting to the terminal device 2.
  • the terminal apparatus 2 sets the information related to the first setting and the information related to the second setting
  • the terminal apparatus 2 uses an uplink grant (downlink) for transmitting an uplink signal in an uplink subframe included in the first subframe subset.
  • a field related to a transmit power control (TPC) command set in the control information format) is recognized as a field related to the first TPC command, and reception processing is performed, and an uplink included in the second subframe subset
  • a field related to a transmission power control (TPC) command set in an uplink grant (downlink control information format) for transmitting an uplink signal in a link subframe is a field related to a second TPC command. Recognize and receive processing.
  • the terminal device 2 sets the transmission power of the uplink signal based on the power correction value obtained by the reception process.
  • the terminal device 2 sets based on the field regarding the 1st TPC command with respect to an uplink sub-frame. Further, when setting information related to the first setting and information related to the second setting, the terminal device 2 sets the transmission power of the uplink signal transmitted in the uplink subframe included in the first subframe subset. Based on the field related to the first TPC command, the transmission power of the uplink signal transmitted in the uplink subframe included in the second subframe subset is set based on the field related to the second TPC command. Note that the first TPC command and the second TPC command are the same as those in the first modification of the first embodiment, and a description thereof will be omitted here.
  • each subframe subset When accumulating transmission power control is performed for each subframe subset, it may be set independently by a DCI format TPC command corresponding to each subframe subset.
  • the DCI format TPC command field corresponding to the first subframe subset and the DCI format TPC command field corresponding to the second subframe subset may have different sizes (bit sizes).
  • the bit size itself of the DCI format may be the same between the first subframe subset and the second subframe subset.
  • the DCI format may be extended by the amount that the TPC command field is extended.
  • the base station apparatus 1 transmits the information regarding 1st setting and / or the information regarding 2nd setting to the terminal device 2.
  • FIG. Further, the base station apparatus 1 transmits information related to a predetermined power offset to the terminal apparatus 2.
  • the terminal device 2 receives the information about the first setting and the information about the second setting, if the terminal device 2 receives the information about the predetermined power offset, the terminal device 2 uses the uplink subframe included in the second subframe subset.
  • the transmission power of the uplink signal to be transmitted is set based on a predetermined power offset.
  • the terminal device 2 determines the transmission power of the uplink signal to be transmitted in the uplink subframe included in the first subframe subset and the second subframe subset.
  • the predetermined power offset is a power ratio of transmission power of uplink signals transmitted in a first subframe subset and a second subframe subset.
  • the predetermined power offset may be a power difference between transmission powers of uplink signals transmitted in the first subframe subset and the second subframe subset.
  • a predetermined value is set for all uplink subframes.
  • the transmission power of the uplink signal is set without considering the power offset and the terminal device 2 sets the information related to the first setting and the information related to the second setting
  • the uplink included in the first subframe subset is set.
  • the transmission power of the uplink signal transmitted in the link subframe is set without considering a predetermined power offset, and the transmission power of the uplink signal transmitted in the uplink subframe included in the second subframe subset is set to a predetermined value. Set based on power offset.
  • information (parameters) related to uplink power control other than the predetermined power offset may be common to the first subframe subset and the second subframe subset. That is, parameters other than the predetermined power offset may be set based on the same information regarding uplink power control.
  • the uplink for all uplink subframes is set.
  • the downlink control information format related to the link for example, DCI format 0
  • a field indicating whether or not to apply a predetermined power offset is not added. If the information related to the setting of is set, whether to apply a predetermined power offset to the downlink control information format (eg, DCI format 0) related to the uplink for the uplink subframe included in the first subframe subset Is not added to the second subframe sensor.
  • a field indicating whether or not to apply a predetermined power offset is added to the downlink control information format (eg, DCI format 0) related to the uplink for the uplink subframe included in the set. it can.
  • the terminal device 2 sets the transmission power of the uplink signal in consideration of the uplink power offset.
  • the predetermined power offset may be applied only when an uplink signal is transmitted in a subframe corresponding to a flexible subframe.
  • the information on the first setting and the information on the second setting are respectively the uplink subframe and the downlink subframe, or the downlink subframe and the special sub for the same subframe (one subframe).
  • the flexible subframe is a subframe that can be processed as a different type of subframe depending on the situation.
  • the base station device 1 transmits information related to the first setting and / or information related to the second setting to the terminal device 2. Further, the base station apparatus 1 transmits information related to the first uplink power control and / or information related to the second uplink power control to the terminal apparatus 2. The terminal device 2 receives the information related to the first setting and the information related to the second setting, and has received the information related to the first uplink power control and the information related to the second uplink power control.
  • the transmission power of the uplink signal to be transmitted in the uplink subframe included in the first subframe subset is set based on the information related to the first uplink power control, and the uplink power included in the second subframe subset is included.
  • the transmission power of the uplink signal transmitted in the link subframe is set based on information related to the second uplink power control. Note that when only one of the information related to the first uplink power control or the information related to the second uplink power control is received and set, the terminal device 2 receives the first subframe subset and the second information.
  • the transmission power of the uplink signal transmitted in the uplink subframe included in the subframe subset is set based on the received information regarding uplink power control.
  • the uplink signal transmission power is set for all uplink subframes based on information related to one uplink power control.
  • the uplink signal is based on the information related to any one of the uplink power controls. Set the transmission power. Note that the information related to the first uplink power control and the information related to the second uplink power control are the same as those shown in the third modification of the first embodiment, and thus the description thereof is omitted here.
  • the terminal device 2 sets the information regarding 1st setting and the information regarding 2nd setting, it will be the uplink subframe contained in a 1st sub-frame subset.
  • the transmission power of the uplink signal transmitted in the frame is set based on the information related to the first uplink power control, and the transmission power of the uplink signal transmitted in the uplink subframe included in the second subframe subset is set to 2 is set based on information on uplink power control.
  • the transmission power of the uplink signal may be set using the parameter included in the information related to the first uplink power control.
  • the information related to the second uplink power control may include a parameter related to the power offset between subframes (or subframe subsets).
  • the base station device 1 transmits information related to the first setting and / or information related to the second setting to the terminal device 2. Further, the base station apparatus 1 transmits information related to the first uplink power control and / or information related to the second uplink power control to the terminal apparatus 2.
  • the terminal device 2 sets the information about the first setting and the information about the second setting
  • the terminal device 2 sets the first subframe subset based on the information about the first setting and the information about the second setting. And a second subframe subset.
  • the terminal device 2 sets the information related to the first uplink power control and the information related to the second uplink power control
  • the terminal device 2 transmits an uplink signal in the uplink subframe included in the first subframe subset.
  • the transmission power of the uplink signal is set based on the information related to the first uplink power control, and the uplink signal is transmitted in the uplink subframe included in the second subframe subset.
  • the transmission power of the uplink signal is set based on information related to link power control.
  • the uplink for all uplink subframes is set.
  • a terminal device 2 in which a field for instructing switching between information on the first uplink power control and information on the second uplink power control is not added to the downlink control information format (for example, DCI format 0) related to the link.
  • the downlink control information format related to the uplink for the uplink subframe included in the first subframe subset (for example, DCI format 0) Information on the first uplink power control and the second In the downlink control information format (for example, DCI format 0) related to the uplink for the uplink subframe included in the second subframe subset, in which the field for instructing switching of information on the uplink power control is not added. It can also be recognized that a field for instructing switching between information related to one uplink power control and information related to the second uplink power control is added.
  • transmission power control (accumulation transmission power control, absolute transmission power control) using a TPC command may be performed for each subframe subset.
  • the power of the physical channels (PUSCH, PUCCH) set for each terminal device included in the information on the uplink power control corresponding to each subframe subset is reset.
  • the accumulated value (accumulated value) by accumulation may be initialized.
  • an accumulation value corresponding to each subframe subset may be initialized.
  • the base station apparatus 1 transmits the information regarding 1st setting and / or the information regarding 2nd setting to the terminal device 2.
  • the base station apparatus 1 sets the DCI format (DCI format) in which the power correction value for the extended TPC command is set for the terminal apparatus 2 that can set the information related to the first setting and the information related to the second setting. 3B) can be transmitted in the PDCCH / EPDCCH.
  • the terminal device 2 sets the DCI format (DCI format 3 / 3A) in which the TPC command before extension is set ),
  • the transmission power control of the uplink signal is performed based on the DCI format 3 / 3A, and the information on the first setting and the information on the second setting are set, the first subframe subset For uplink subframes included in, uplink signal transmission power control is performed based on DCI format 3 / 3A, and for uplink subframes included in the second subframe subset Based on the DCI format (DCI format 3B) in which the TPC command is set. It performs the transmission power control of the click signal. Since the definition of the DCI format 3B is the same as that of the fourth modification of the first embodiment, a description thereof is omitted here.
  • the base station apparatus 1 transmits to the terminal apparatus 2 information related to subframe settings for configuring a subframe subset.
  • the base station apparatus 1 transmits information related to uplink power control to the terminal apparatus 2.
  • the terminal device 2 configures two subframe subsets based on information on subframe settings. Further, when transmitting an uplink signal in the uplink subframe of the first subframe subset based on the information related to uplink power control, the terminal device 2 performs the first uplink power control, When uplink signals are transmitted in the uplink subframes of the two subframe subsets, second uplink power control is performed.
  • the base station apparatus 1 may transmit information related to subframe configuration for configuring a subframe subset to the terminal apparatus 2.
  • the base station apparatus 1 transmits information related to uplink power control to the terminal apparatus 2.
  • the terminal device 2 configures two subframe subsets based on information on subframe settings. Further, when transmitting an uplink signal in the uplink subframe of the first subframe subset based on the information related to uplink power control, the terminal device 2 performs the first uplink power control, When uplink signals are transmitted in the uplink subframes of the two subframe subsets, second uplink power control is performed.
  • the terminal device 2 may configure the first subframe subset and the second subframe subset based on the information on the first setting and the information on the second setting.
  • the first subframe subset is the same subframe (uplink subframe, uplink subframe, downlink subframe) in the same subframe in the information on the first setting and the information on the second setting.
  • Frame and downlink subframe, special subframe and special subframe) are set
  • the second subframe subset is information on the first setting and information on the second setting.
  • Subframe sets in which different types of subframes are set in the same subframe downlink subframe and uplink subframe, downlink subframe and special subframe, uplink subframe and special subframe
  • the information regarding the first setting and the information regarding the second setting may be set based on the TDD UL / DL setting.
  • the first setting is related to the first setting.
  • the information or the information related to the second setting includes information related to the TDD UL / DL setting, and the other information includes information indicating a flexible subframe or information indicating a fixed subframe.
  • the information indicating the fixed subframe is information indicating the subframe not to be processed as the flexible subframe in the information related to the first setting.
  • a plurality of subframe subsets may not be configured.
  • the priority of the physical channel / physical signal to be transmitted may be set or defined in advance according to the type of the physical channel.
  • the terminal device 2 may report the reception power measurement result based on the second downlink reference signal to the base station device 1.
  • the terminal device 2 may perform the report periodically.
  • the terminal device 2 may perform the report when a certain condition is satisfied.
  • the terminal device 2 when measuring the received power based on the second downlink reference signal, the terminal device 2 may perform uplink signal transmission power control based on the received power. Further, the terminal device 2 may determine the downlink path loss based on the received power.
  • the terminal apparatus 2 determines that the total transmission power of various uplink signals including the transmission power of the first uplink reference signal and / or the second uplink reference signal is the terminal apparatus 2. When the set maximum transmission power is exceeded, the first uplink reference signal and / or the second uplink reference signal may not be transmitted.
  • a subframe for actually transmitting an uplink signal and / or a subframe for receiving a downlink signal is set independently of the information regarding the first setting and the information regarding the second setting. It may be set based on information (for example, information related to the third setting).
  • the information related to the first setting and / or the information related to the second setting may be notified by a system information block type 1 (SIB1) or an RRC message.
  • SIB1 system information block type 1
  • RRC Radio Resource Control
  • the information related to the first setting and the information related to the second setting may be set in the same RRC message, the same system information, or the same information element. Further, the information related to the first setting and the information related to the second setting may be set in different RRC messages, different system information, or different information elements. Further, the information related to the first setting and the information related to the second setting are set independently as different parameters.
  • the information related to the first setting is the TDD UL / DL setting notified by the system information block type 1 (SIB1) or the RRC message
  • the information related to the second setting is the additional TDD. It may be UL / DL setting (second TDD UL / DL setting).
  • the information regarding the second setting may be information (flexible subframe pattern) indicating a flexible subframe.
  • the information on the second setting may be information (fixed subframe pattern) indicating a fixed subframe.
  • the information related to the second setting may be information related to Release 12 (Release 12, r12) or Version 12 (version 12, v12).
  • the information on the second setting may be information indicating a subframe pattern corresponding to the first subframe subset described above.
  • the information on the second setting may be information indicating a subframe pattern corresponding to the second subframe subset described above.
  • the information on the second setting may be information indicating a subframe pattern to which a PDCCH / EPDCCH (DCI format) accompanied by a TPC command for a flexible subframe can be assigned.
  • the information on the second setting may be information indicating a subframe pattern that can be received by the CRS.
  • the information on the second setting may be information indicating a subframe pattern that can be received by the CSI-RS.
  • the information on the second setting may be information indicating a subframe pattern (set) in which channel state information (CSI, CQI, PMI, RI) can be reported.
  • the information related to the second setting is information indicating a subframe pattern that restricts measurement in the time domain for measurement in the primary cell (reception power RSRP, reception quality RSRQ, radio link monitoring). Also good. That is, the information regarding the second setting may be information indicating a subframe pattern to be measured. Further, the information related to the second setting may be information indicating a subframe pattern for limiting the measurement in the time domain with respect to the measurement in the adjacent cell.
  • the information related to the second setting may be information indicating a subframe pattern that restricts measurement in the time domain with respect to measurement in the secondary cell. Further, the information regarding the second setting may be set based on the measurement subframe pattern. The information on the second setting may be information indicating a subframe pattern in which a downlink signal can be received. Further, the information regarding the second setting may be information that can be added.
  • the information related to the first setting may be information related to whether or not the physical uplink control channel can be transmitted in the second cell (secondary cell).
  • the information on the second setting may be information indicating a subframe pattern (set) associated with a report of certain channel state information (CSI, CQI, PMI, RI).
  • the information on the second setting is different from the information indicating the subframe pattern (set) associated with the report of certain channel state information (CSI, CQI, PMI, RI) different from the second setting.
  • the report also includes channel state information (CSI, CQI, PMI) calculated based on CSI-RS and / or zero power CSI-RS and / or CSI-IM resources included in the associated subframe pattern (set). , RI).
  • CSI channel state information
  • CQI channel state information
  • PMI channel state information
  • Information indicating the pattern (set) may be set.
  • the information regarding the second setting may be uniquely determined by the system.
  • the information regarding 2nd setting may be alert
  • the information regarding the second setting may be individually notified for each terminal device 2 as dedicated information unique to the terminal device.
  • Information (UE capability) indicating whether or not information related to the second setting can be set may be notified from the terminal device 2 to the base station device 1.
  • the information regarding the first setting and / or the information regarding the second setting may be set in a bitmap.
  • the bitmap may be composed of 40 bits or 80 bits.
  • the information related to the first setting and / or the information related to the second setting is an index (or an information bit representing an index, a bit indicating the configuration of the uplink subframe, the downlink subframe, and the special subframe based on the table) Series).
  • the table may be TDD UL / DL configuration (TDD UL / DL configuration).
  • a table representing the TDD UL / DL setting may be configured as shown in FIG.
  • the information related to the second setting may be an additional TDD UL / DL setting (second TDD UL / DL setting).
  • the information on the second setting may be information indicating a blank subframe.
  • the information regarding the second setting may be information (flexible subframe pattern) indicating a flexible subframe.
  • the information on the second setting may be information (fixed subframe pattern) indicating a fixed subframe.
  • the uplink reference UL-DL setting and the downlink reference UL-DL setting may be calculated from information on the first setting and information on the second setting using a table or the like.
  • the uplink reference UL-DL setting and the downlink reference UL-DL setting are determined using a table or the like as the information related to the third setting in addition to the information related to the first setting and the information related to the second setting. May be.
  • the base station apparatus 1 or the terminal apparatus 2 sets one of the information related to the first setting and the information related to the second setting as the uplink reference UL-DL setting and the other.
  • You may set as a downlink reference UL-DL setting.
  • the terminal apparatus 2 may set the uplink reference UL-DL setting and the downlink reference UL-DL setting after receiving the information on the first setting and the information on the second setting.
  • the DCI format related to the uplink (for example, DCI format 0/4) may be transmitted in the downlink subframe set in the uplink reference UL-DL setting.
  • the uplink reference UL-DL setting and the downlink reference UL-DL setting may be set using the same table.
  • the uplink reference UL-DL setting and the downlink reference UL-DL setting index are set based on the same table, the uplink reference UL-DL setting and the downlink reference UL-DL setting are set with different indexes. It is preferred that That is, it is preferable that different subframe patterns are set for the uplink reference UL-DL setting and the downlink reference UL-DL setting.
  • both the information related to the first setting and the information related to the second setting are TDD UL / DL settings
  • either one is set to the uplink reference UL-DL setting depending on the conditions.
  • the other may be set to the downlink reference UL-DL setting.
  • the uplink reference UL-DL configuration determines at least correspondence between a subframe in which a physical downlink control channel is arranged and a subframe in which a physical uplink shared channel corresponding to the physical downlink control channel is arranged. Therefore, it may be different from the actual signal transmission direction (that is, uplink or downlink).
  • the downlink reference UL-DL configuration is used to determine a correspondence between at least a subframe in which a physical downlink shared channel is arranged and a subframe in which HARQ-ACK corresponding to the physical downlink shared channel is transmitted.
  • the actual signal transmission direction (that is, uplink or downlink) may be different. That is, the uplink reference UL-DL configuration specifies (selects and determines) the correspondence between the subframe n in which PDCCH / EPDCCH / PHICH is arranged and the subframe n + k in which PUSCH corresponding to the PDCCH / EPDCCH / PHICH is arranged. To be used).
  • the corresponding uplink reference UL-DL configuration includes a subframe in which PDCCH / EPDCCH / PHICH is arranged and a subframe in which PUSCH corresponding to the PDCCH / EPDCCH / PHICH is arranged. Used to determine correspondence.
  • the downlink reference UL-DL configuration is used to specify (select or determine) the correspondence between the subframe n in which the PDSCH is arranged and the subframe n + k in which the HARQ-ACK corresponding to the PDSCH is transmitted.
  • the corresponding downlink reference UL-DL configuration specifies the correspondence between the subframe n in which the PDSCH is arranged and the subframe n + k in which the HARQ-ACK corresponding to the PDSCH is transmitted ( Used to select and determine).
  • the terminal device 2 uses the TDD UL / DL setting for reference to uplink transmission (first TDD).
  • UL / DL setting) and TDD UL / DL setting for downlink transmission reference (second TDD UL / DL setting) are set, and further, information related to uplink transmission power control is set, the first TDD is set.
  • uplink power control of the subframe is performed based on the first uplink power control
  • the uplink power control of the subframe is based on the second transmission power control. Done.
  • the terminal device 2 uses the second TDD UL / DL settings (for example, tdd-Config-v12, tdd-Config-r12, tdd-ConfigULreference-v12, tdd-ConfigDLreference-r12) as parameters regarding the second setting.
  • the uplink signal may be transmitted based on the first TDD UL / DL setting
  • the downlink signal may be received based on the second TDD UL / DL setting.
  • transmission of an uplink signal and reception of a downlink signal occur in a certain subframe, it may be determined which is prioritized based on transmission direction setting information (information on the third setting).
  • the information related to the first setting and / or the information related to the second setting is the TDD UL / DL setting (TDDTDUL / DL configuration, TDD configuration, tdd-Config, uplink-downlink configuration (s )).
  • the information on the first setting and / or the information on the second setting may be a subframe pattern indicated by a bitmap.
  • one of the information related to the first setting and the information related to the second setting may be information indicating an uplink subframe, and the other may be information indicating a downlink subframe.
  • Such instruction information may be defined by a table or a bitmap.
  • the base station apparatus 1 is the information regarding the first setting and the information regarding the second setting, which is information regarding the first setting and information regarding the second setting.
  • an uplink subframe may be indicated on the one hand, and a downlink subframe may be indicated on the other hand.
  • the terminal device 2 when setting only one of the information related to the first setting or the information related to the second setting, the terminal device 2 recognizes subframes other than the instructed subframe as different types of subframes, Performs transmission / reception processing.
  • the terminal device 2 when an uplink subframe is indicated by the information on the first setting and a downlink subframe is indicated by the information on the second setting, the terminal device 2 that sets only the information on the first setting The subframes other than the uplink subframe indicated based on the information regarding are recognized as downlink subframes or special subframes, and reception processing / transmission processing is performed. Further, the terminal device 2 that sets only the information related to the second setting recognizes a subframe other than the downlink subframe that is instructed based on the information related to the second setting as an uplink subframe or a special subframe, Performs transmission / reception processing. Note that an uplink subframe and a downlink subframe may be indicated for the same subframe with the information on the first setting and the information on the second setting.
  • the terminal device 2 transmits an uplink signal based on the information related to the first setting, and relates to the second setting.
  • a downlink signal may be received based on the information.
  • the terminal device 2 receives the downlink signal based on the information related to the first setting, and relates to the second setting.
  • An uplink signal may be transmitted based on the information. Which setting information is used to transmit uplink signals and receive downlink signals may be determined based on information related to the third setting.
  • the information regarding the second setting may be information indicating a flexible subframe.
  • Information regarding the second setting may be managed in a table.
  • the information regarding the second setting may be information indicating a subframe to be set as a flexible subframe by a bitmap.
  • the flexible subframe is an uplink subframe and is a subframe that is a downlink subframe.
  • the flexible subframe is a downlink subframe and a subframe that is a special subframe.
  • the flexible subframe is an uplink subframe and a subframe that is a special subframe. That is, the flexible subframe is a subframe that is a first subframe and a second subframe.
  • a subframe set as a flexible subframe is processed as a first subframe (for example, an uplink subframe) in the case of condition 1, and a second subframe (for example, in the case of condition 2). Downlink subframe).
  • the flexible subframe may be set based on information on the first setting and information on the second setting. For example, when a certain subframe i is set as an uplink subframe in the information related to the first setting and as a downlink subframe in the information related to the second setting, the subframe i is a flexible subframe.
  • the flexible subframe may be set based on information indicating a subframe pattern of the flexible subframe.
  • the information on the first setting and the information on the second setting are not two TDD UL / DL settings, but one TDD UL / DL setting and a flexible subframe pattern (downlink candidate sub). Frame pattern, uplink candidate subframe pattern, or additional subframe). If the subframe index indicated by the flexible subframe pattern does not transmit an uplink signal in the subframe even if it is indicated as an uplink subframe in the TDD UL / DL setting, the terminal apparatus 2 It is possible to receive a link signal, and even if it is indicated as a downlink subframe in the TDD UL / DL setting, if it is instructed to transmit an uplink signal in that subframe in advance, the uplink signal Can be sent.
  • a specific subframe may be indicated as an uplink / downlink candidate subframe.
  • the terminal device 2 When both the information on the first setting and the information on the second setting are set, the terminal device 2 recognizes one of them as a subframe subset for uplink based on a certain condition, May be recognized as a subframe subset for the downlink.
  • the subframe subset for uplink is a set of subframes configured for PUSCH and PHICH transmission
  • the downlink subframe subset is configured for PDSCH and HARQ transmission.
  • Information indicating the relationship between the PUSCH and PHICH subframes and information indicating the relationship between the PDSCH and HARQ subframes may be set in the terminal device 2 in advance.
  • either the information on the first setting or the information on the second setting is information indicating the subframe pattern of the uplink subframe, and the other is indicating the subframe pattern of the downlink subframe. It may be information. These pieces of information may be set as a bitmap.
  • accumulation (accumulation) transmission power control by the TPC command and / or absolute (Absolute) transmission power control may be performed independently for each subframe subset.
  • the terminal device 2 when receiving information related to the third setting, the terminal device 2 performs transmission power control using a TPC command for each subframe subset.
  • the accumulation transmission power control and the absolute transmission power control may be referred to as closed loop transmission power control.
  • the cumulative transmission power control is to perform power correction in consideration of the power correction value set in the TPC command received in the past, and the absolute transmission power control is power correction by the TPC command received immediately before. This is power control considering only the value.
  • the transmission power is controlled by considering only the power correction value by the TPC command received immediately before without considering the power correction value by the TPC command received in the past.
  • Accumulation transmission power control controls transmission power in consideration of a power correction value based on a TPC command received in the past.
  • the base station apparatus 1 can detect various uplink signals depending on the difference in the signal sequence of each uplink signal. That is, the base station apparatus 1 can identify each uplink signal by the difference in the signal sequence of the received uplink signal. Further, the base station apparatus 1 can determine whether or not the transmission is directed to the own station, depending on the difference in the signal sequence of the received uplink signal.
  • the terminal apparatus 2 calculates a downlink path loss based on the measurement result, and uses it for uplink transmission power control. Also good.
  • the received power measurement may be referred to as a reference signal received power (RSRP) measurement or a received signal power measurement.
  • the reception quality measurement may also be referred to as reference signal reception quality (RSRQ: “Reference Signal Signal Received Quality” measurement or reception signal quality measurement).
  • the resource allocation (Resource allocation, mapping to resources, elements mapping to physical resources) of the second downlink reference signal may be frequency-shifted.
  • the frequency shift of the second downlink reference signal may be determined based on the physical cell ID. Further, the frequency shift of the second downlink reference signal may be determined based on the virtual cell ID.
  • information instructing whether or not to measure the received power of the second downlink reference signal is notified from the base station apparatus 1 to the terminal apparatus 2.
  • the terminal device 2 performs the received power measurement of the second downlink reference signal.
  • the terminal device 2 may measure the received power of the first downlink reference signal in parallel.
  • the terminal device 2 indicates that the instruction information cannot measure the received power of the second downlink reference signal, the terminal device 2 measures the received power of only the first downlink reference signal.
  • the instruction information may include information instructing whether or not to measure the reception quality of the second downlink reference signal.
  • the third downlink reference signal may perform reception power measurement regardless of the instruction information.
  • the base station apparatus 1 instructs the terminal apparatus 2 whether to measure the received power of the first downlink reference signal or to measure the received power of the second downlink reference signal.
  • Information is notified.
  • the terminal device 2 performs reception power measurement of the first downlink reference signal when the instruction information instructs to perform reception power measurement of the first downlink reference signal.
  • the terminal device 2 measures the received power of the second downlink reference signal when the instruction information instructs to measure the received power of the second downlink reference signal. That is, this instruction information is information instructing switching of received power measurement.
  • the instruction information may include information instructing whether or not to perform reception quality measurement. In this example, it is described that the instruction information is information instructing switching of reception power measurement of two downlink reference signals.
  • the instruction information is instructed to switch reception power measurement of three or more downlink reference signals. It may be information. Further, the third downlink reference signal may perform reception power measurement regardless of the instruction information. Also, the transmission power of the second downlink reference signal and / or the transmission power of the third downlink reference signal may be set based on the transmission power of the first downlink reference signal. For example, a power ratio (power offset) between the first downlink reference signal and the second downlink reference signal (or the third downlink reference signal) may be set.
  • the received power of the downlink signal is measured without considering the power offset, and the downlink subframe included in the second subframe subset is measured.
  • the received power measurement of the downlink signal in consideration of the power offset may be performed.
  • This power offset may be set by the base station device 1 in advance. Also, this power offset may be indicated by being set in a DCI format related to the downlink.
  • the accumulation / absolute transmission power control is common. There may be.
  • power control uplink power control, uplink subframe / downlink subframe / special subframe which is not set as the flexible subframe is different.
  • Downlink power control may be performed.
  • closed-loop transmission power control accumulation transmission power control
  • parameters used for signal generation may be set independently in the flexible subframe and the uplink / downlink subframe. For example, a virtual cell ID, a scramble ID, etc. may be set independently.
  • generating a signal includes generating a signal sequence.
  • generating a signal includes determining a radio resource to which the signal is allocated.
  • the same RSRP and path loss value may be applied in the first uplink power control and the second uplink power control.
  • the received power measurement control may be shared by downlink subframes included in the two subframe subsets.
  • the maximum value of the transmission power of PUSCH when transmission of PUSCH and PUCCH occurs in a flexible subframe, when the sum of their transmission power exceeds the maximum transmission power set in the terminal device, the maximum value of the transmission power of PUSCH is The maximum transmission power may be a value obtained by subtracting the transmission power value of PUCCH.
  • the base station apparatus 1 uses the uplink index to transmit an uplink signal in a subframe that does not collide with a subframe in which the uplink subframe collides with the downlink subframe.
  • the device 2 may be controlled.
  • * Accumulation control may be shared by two subframe subsets. The accumulation may be common regardless of the subframe subset.
  • the RSRP measurement result may be shared by two subframe subsets. RSRP may be common regardless of the subframe subset.
  • accumulation control may be performed independently for each subframe subset.
  • the accumulation by the TPC command received in the fixed subframe and the accumulation by the TPC command received in the flexible subframe are controlled independently.
  • accumulation transmission power control (cumulative transmission power control, closed loop transmission power control) may be performed independently for each subframe subset. .
  • the timing for receiving the DCI format including each TPC command field may be defined in advance.
  • the RSRP measurement result may be independent for each subframe subset. Measurement control of RSRP by CRS received in the downlink subframe of the fixed subframe and RSRP by CRS received in the flexible subframe may be performed independently.
  • the second setting may be information indicating a subframe pattern capable of receiving a DCI format including a TPC command field for a flexible subframe.
  • a pattern of a subframe in which a TPC command applicable to an uplink subframe included in the first subframe subset is transmitted and a TPC applicable to an uplink subframe included in the second subframe subset may be set.
  • Table management may be performed for association (linking) between an uplink subframe and a downlink subframe in which a DCI format including a TPC command for the uplink subframe is transmitted.
  • the information related to the first setting and / or the information related to the second setting may be information indicating an uplink / downlink switching period and a configuration of each subframe.
  • the uplink signal and / or the downlink signal may be subjected to different transmission power control in the flexible subframe and other subframes.
  • the terminal device 2 uses the first uplink reference signal (serving cell) for the cell (serving cell) in which the information related to the first setting is set. For example, P-SRS) may not be transmitted. Moreover, in each said embodiment, the terminal device 2 does not need to transmit the uplink reference signal by which an upper layer sets a specific transmission sub-frame, when the information regarding a 1st setting is set.
  • resource elements and resource blocks are used as mapping units for various uplink signals and downlink signals, and symbols, subframes, and radio frames are used as transmission units in the time direction. It is not limited to. The same effect can be obtained even if a region and a time unit composed of an arbitrary frequency and time are used instead.
  • the case where demodulation is performed using a precoded RS is described, and a port equivalent to the MIMO layer is described as a port corresponding to the precoded RS.
  • the same effect can be obtained by applying the present invention to ports corresponding to different reference signals.
  • Unprecoded (Nonprecoded) RS is used instead of Precoded RS, and a port equivalent to the output end after precoding processing or a port equivalent to a physical antenna (or a combination of physical antennas) can be used as a port. .
  • uplink transmission power control refers to transmission power control of an uplink physical channel / physical signal (PUSCH, PUCCH, PRACH, SRS, DMRS, etc.). It contains information on switching or (re) setting of various parameters used for setting the transmission power of various uplink physical channels.
  • downlink transmission power control refers to transmission power of downlink physical channels / physical signals (CRS, UERS (DL DMRS), CSI-RS, PDSCH, PDCCH / EPDCCH, PBCH, PSS / SSS, PMCH, PRS, etc.).
  • the transmission power control includes information related to switching or (re) setting of various parameters used for setting transmission power of various downlink physical channels.
  • the base station apparatus may be able to set a plurality of virtual cell IDs for one terminal apparatus.
  • a network including a base station apparatus and at least one base station apparatus may be configured to set a virtual cell ID independently for each physical channel / physical signal.
  • a plurality of virtual cell IDs may be set for one physical channel / physical signal. That is, the virtual cell ID may be set for each piece of information regarding the setting of each physical channel / physical signal.
  • the virtual cell ID may be shared by a plurality of physical channels / physical signals.
  • uplink power control has been described, but downlink power control may be similarly controlled.
  • setting power includes setting a power value
  • calculating power includes calculating power value
  • measuring power Measuring the power value includes reporting the power value, and reporting the power value.
  • power includes the meaning of the value of power as appropriate.
  • calculating the path loss includes calculating the value of the path loss.
  • path loss includes the meaning of the value of path loss as appropriate.
  • setting various parameters includes setting various parameter values.
  • the expression “various parameters” includes the meaning of various parameter values as appropriate.
  • the program that operates in the base station device 1 and the terminal device 2 related to the present invention is a program (a program that causes a computer to function) that controls the CPU and the like so as to realize the functions of the above-described embodiments related to the present invention.
  • Information handled by these devices is temporarily stored in the RAM at the time of processing, then stored in various ROMs and HDDs, read out by the CPU, and corrected and written as necessary.
  • a recording medium for storing the program a semiconductor medium (for example, ROM, nonvolatile memory card, etc.), an optical recording medium (for example, DVD, MO, MD, CD, BD, etc.), a magnetic recording medium (for example, magnetic tape, Any of a flexible disk etc. may be sufficient.
  • the processing is performed in cooperation with the operating system or other application programs.
  • the functions of the invention may be realized.
  • the program when distributing to the market, can be stored and distributed on a portable recording medium, or transferred to a server computer connected via a network such as the Internet.
  • the storage device of the server computer is also included in the present invention.
  • LSI which is typically an integrated circuit.
  • Each functional block of the base station apparatus 1 and the terminal apparatus 2 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.
  • the terminal device of the present invention is not limited to application to a mobile station, but is a stationary or non-movable electronic device installed indoors or outdoors, such as AV equipment, kitchen equipment, cleaning / washing equipment, air conditioning Needless to say, it can be applied to equipment, office equipment, vending machines, and other daily equipment. Further, the present invention is suitable for use in a radio base station apparatus, a radio terminal apparatus, a radio communication system, and a radio communication method.
  • a terminal device is a terminal device that communicates with a base station device, and includes information on the first setting and / or Alternatively, when the reception unit that receives information on the second setting and the information on the first setting are set and the information on the second setting is not set, the first uplink power in all uplink subframes When an uplink signal is transmitted based on the control and both the information on the first setting and the information on the second setting are set, the first subframe subset and the second subframe subset are configured.
  • a transmission unit that transmits an uplink signal based on second uplink power control in an uplink subframe included in the two subframe subsets, wherein the information related to the first setting transmits an uplink signal Information indicating the configuration (TDD UL / DL configuration) of the subframe (uplink subframe) to be received and the subframe (downlink subframe) to receive the downlink signal, and the information on the second setting is a bit It is information that designates the structure of the map.
  • a terminal device is the terminal device described above, wherein the first subframe subset is configured based on information on the first setting and information on the second setting. It is characterized by being.
  • a terminal device is the terminal device described above, wherein the second subframe subset is configured based on information on the second setting.
  • a communication method for a terminal apparatus that communicates with a base station apparatus, the communication method for a terminal apparatus that communicates with a base station apparatus, wherein the first setting is performed. And / or information related to the second setting is received, information related to the first setting is set, and information related to the second setting is not set, the first uplink in all uplink subframes When an uplink signal is transmitted based on power control and both information related to the first setting and information related to the second setting are set, the first subframe subset and the second subframe subset are configured.
  • An uplink signal is transmitted based on the second uplink power control in an uplink subframe included in the second subframe subset, and the information regarding the first setting is a subframe (uplink) for transmitting the uplink signal.
  • Link subframe) and a configuration (TDD UL / DL configuration) of a subframe (downlink subframe) that receives a downlink signal, and the information related to the second setting indicates a bitmap configuration It is the information to do.
  • An integrated circuit is an integrated circuit mounted on a terminal device that communicates with a base station device, and includes information on the first setting and / or information on the second setting.
  • an uplink signal is transmitted based on the first uplink power control in all uplink subframes. If both information related to the first setting and information related to the second setting are set, a first subframe subset and a second subframe subset are configured, and the first subframe subset is included in the first subframe subset.
  • An uplink signal is transmitted based on the first uplink power control in the included uplink subframe, and the second subframe subset A function of transmitting an uplink signal based on second uplink power control in an included uplink subframe, and causing the terminal device to exhibit information regarding the first setting as a sub-signal for transmitting an uplink signal.
  • It is information indicating the configuration (TDD ⁇ UL / DL configuration) of a frame (uplink subframe) and a subframe (downlink subframe) that receives a downlink signal
  • the information on the second setting is a bit map
  • the information regarding the fixed characteristic which is the information indicating the configuration, is information regarding the second TDD UL / DL setting.
  • the terminal device can perform appropriate transmission power control.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention se rapporte à un dispositif terminal qui communique avec un dispositif station de base, et qui est doté d'une unité d'émission qui : ne réalise pas une première régulation de puissance de liaison montante au moyen de tous les secteurs de trame de liaison montante lorsque des informations liées à un premier réglage sont définies et que des informations liées à un second réglage ne sont pas définies ; et configure un premier et un second sous-ensemble de secteurs de trame, ne réalise pas une première régulation de puissance de liaison montante au moyen d'un secteur de trame de liaison montante qui est inclus dans le premier sous-ensemble de secteurs de trame, et réalise une seconde régulation de puissance de liaison montante à l'aide d'un secteur de trame de liaison montante qui est compris dans le second sous-ensemble de secteurs de trame lorsque les informations liées au premier réglage et les informations liées au second réglage sont définies.
PCT/JP2014/059845 2013-04-04 2014-04-03 Dispositif terminal, procédé de communication et circuit intégré WO2014163144A1 (fr)

Applications Claiming Priority (2)

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JP2013-078216 2013-04-04
JP2013078216A JP2016115950A (ja) 2013-04-04 2013-04-04 端末装置、通信方法および集積回路

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EP3621365A4 (fr) * 2017-05-02 2020-12-02 NTT DoCoMo, Inc. Dispositif utilisateur

Citations (1)

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JP2013034115A (ja) * 2011-08-02 2013-02-14 Sharp Corp 基地局、端末、通信システムおよび通信方法

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JP2013034115A (ja) * 2011-08-02 2013-02-14 Sharp Corp 基地局、端末、通信システムおよび通信方法

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ALCATEL -LUCENT SHANGHAI BELL: "Design of DCI Format 4", 3GPP TSG RAN WG1 MEETING #63 R1- 105992, 19 November 2010 (2010-11-19) *
SAMSUNG: "Dynamic reconfiguration of TDD UL-DL configuration", 3GPP TSG RAN WG1 MEETING #69 R1- 122267, 25 May 2012 (2012-05-25) *

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