WO2015141770A1 - Appareil terminal, appareil de station de base et procédé - Google Patents

Appareil terminal, appareil de station de base et procédé Download PDF

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Publication number
WO2015141770A1
WO2015141770A1 PCT/JP2015/058213 JP2015058213W WO2015141770A1 WO 2015141770 A1 WO2015141770 A1 WO 2015141770A1 JP 2015058213 W JP2015058213 W JP 2015058213W WO 2015141770 A1 WO2015141770 A1 WO 2015141770A1
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WIPO (PCT)
Prior art keywords
parameter
cell
uplink
terminal device
subframe
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PCT/JP2015/058213
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English (en)
Japanese (ja)
Inventor
渉 大内
寿之 示沢
翔一 鈴木
立志 相羽
公彦 今村
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シャープ株式会社
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Publication of WO2015141770A1 publication Critical patent/WO2015141770A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment

Definitions

  • the present invention relates to a terminal device, a base station device, and a method.
  • This application claims priority based on Japanese Patent Application No. 2014-058154 filed in Japan on March 20, 2014, the contents of which are incorporated herein by reference.
  • Wireless LAN by WCDMA registered trademark, Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution-Advanced
  • IEEE The Institute of Electric Electronics and Electronics Electronics
  • 3GPP Third Generation Partnership Project
  • WLAN base station apparatus (cell, first communication apparatus (communication apparatus different from terminal apparatus), eNodeB) and terminal included in communication systems such as “Wireless Local Area Network” and WiMAX (Worldwide Interoperability for Microwave Access)
  • the device mobile terminal, mobile station device, second communication device (communication device different from the base station device), UE (User Equipment), user device
  • MIMO Multi Input Multi Output
  • CA Carrier Aggregation
  • 3GPP employs frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: ⁇ ⁇ ⁇ ⁇ Time ⁇ ⁇ Division Duplex) as the frame structure type of the bidirectional communication method (duplex method).
  • FDD Frequency Division Duplex
  • TDD time division duplex
  • full duplex Full duplex
  • Half duplex full duplex
  • Duplex which realizes bidirectional communication by switching one-way communication.
  • Duplex is employed (Non-Patent Document 2).
  • LTE employing TDD may also be referred to as TD-LTE, LTE TDD.
  • Non-patent Document 2 Physical resources of a physical uplink control channel are defined to be mapped to both ends of an uplink system bandwidth (uplink channel bandwidth, uplink transmission bandwidth setting) (Non-patent Document 2).
  • TDD-FDD CA TDD-FDD carrier aggregation
  • the frequency band (operating band, operating frequency) to be used is assigned to each telecommunications carrier (operator, operator).
  • Some aspects of the present invention have been made in view of the above problems, and an object thereof is to provide a terminal device, a base station device, and a method that enable appropriate communication.
  • a terminal apparatus is a terminal apparatus that communicates with a base station apparatus, and is a physical random access.
  • the first parameter and the second parameter are set in the receiving unit that receives information on channel setting using higher layer signaling and the information on setting of the physical random access channel, Based on the first method using the first parameter and the second parameter, resource allocation for physical random access channel transmission is performed, and information regarding the setting of the physical random access channel includes the first parameter and the second parameter. If the first parameter and the second parameter are not set, Based on the second method that does not use the meter, and a transmission unit that performs resource allocation for a physical random access channel transmission.
  • a terminal apparatus is a terminal apparatus that communicates with a base station apparatus, and receives a reception unit that receives information on setting of a physical random access channel using higher layer signaling.
  • a value other than 0 is set to the first parameter and the second parameter in the information regarding the setting of the physical random access channel
  • the first parameter and the second parameter using the second parameter are set. If resource allocation for physical random access channel transmission is performed based on the method 1 and the first parameter and the second parameter are set to 0 in the information regarding the setting of the physical random access channel, Based on a first scheme and a second scheme that does not use the second parameter, And a transmission unit that performs resource allocation for the access channel transmission.
  • the terminal device is the terminal device described above, wherein the first parameter and the second parameter are set in information related to the setting of the physical random access channel.
  • physical resource mapping of the physical uplink control channel may be performed using the first parameter and the second parameter.
  • the terminal device is the terminal device described above, wherein the first parameter is a resource block offset with respect to a lower end of an uplink bandwidth, and the second parameter is It may be a resource block offset with respect to the upper end of the uplink bandwidth.
  • the base station apparatus is a base station apparatus that communicates with a terminal apparatus, and that transmits information related to setting of a physical random access channel using higher layer signaling.
  • the physical random access channel is set to the first parameter and the second parameter using the second parameter. If the first parameter and the second parameter are not set in the information related to the setting of the physical random access channel received from the physical resource mapped based on the method 1, the physical random access channel is The second method does not use the first parameter and the second parameter.
  • a receiving unit that receives from the physical resource mapped to Zui.
  • a method is a method applied to a terminal apparatus that communicates with a base station apparatus, and receives information related to setting of a physical random access channel using higher layer signaling. And when the first parameter and the second parameter are set in the information related to the setting of the physical random access channel, the first parameter and the second parameter using the second parameter are set. If the first parameter and the second parameter are not set in the step of performing resource allocation for physical random access channel transmission based on the scheme and the information regarding the setting of the physical random access channel, the first parameter And a second scheme that does not use the second parameter, Comprising the steps of performing resource allocation for the physical random access channel transmission, a.
  • a method is a method applied to a terminal apparatus that communicates with a base station apparatus, and receives information related to setting of a physical random access channel using higher layer signaling. And when the first parameter and the second parameter are set to values other than 0 in the information regarding the setting of the physical random access channel, the first parameter and the second parameter are set to Based on the used first scheme, 0 is set in the first parameter and the second parameter in the step of performing resource allocation for physical random access channel transmission and information relating to the setting of the physical random access channel. In this case, the second method does not use the first parameter and the second parameter. Based on, it includes the steps of performing a resource allocation for a physical random access channel transmission, a.
  • the first parameter and the second parameter are set in the information on the configuration of the physical random access channel
  • a step of performing physical resource mapping of the physical uplink control channel using the second parameter may be included.
  • a method according to an aspect of the present invention is a method applied to a base station apparatus that communicates with a terminal apparatus, and transmits information related to setting of a physical random access channel using higher layer signaling. And when the first parameter and the second parameter are set in the information relating to the setting of the physical random access channel, the physical random access channel is used for the first parameter and the second parameter. If the first parameter and the second parameter are not set in the information relating to the setting of the physical random access channel and the step of receiving from the physical resource mapped based on the first method, the physical random An access channel is defined as the first parameter and the second parameter. Based on the second method that does not use comprises the steps of receiving from the mapped physical resource, the.
  • the terminal device and the base station device can perform appropriate transmission control.
  • the terminal apparatus performs appropriate transmission control to reduce interference between channels due to the adjacent channel leakage power ratio. Can do.
  • FIG. 5 is an example of physical resource mapping for different random access opportunities (PRACH transmission opportunities) required for a specific PRACH density D RA in frame structure type 2.
  • carrier aggregation that performs communication by aggregating a plurality of component carriers may be applied.
  • a carrier aggregation since a cell can be comprised using a component carrier, a carrier aggregation may be called a cell aggregation. That is, it can be said that the communication system of this embodiment can perform communication by aggregating a plurality of cells.
  • communication is performed by aggregating a cell to which the TDD scheme is applied (TDD cell) and a cell to which the FDD scheme is applied (FDD cell) among a plurality of cells. Also good.
  • frame structure type is sometimes called a duplex mode.
  • frame structure type 1 is defined as FDD
  • frame structure type 2 is defined as TDD.
  • FDD and TDD are described for the duplex mode, this embodiment is applicable even when a third duplex mode (XDD) or a fourth duplex mode (YDD) is added. is there. In other words, the present embodiment can be applied even when the frame structure type 3 or the frame structure type 4 is added.
  • Cell aggregation is to perform communication by aggregating one primary cell and one or more secondary cells. Further, the primary cell may be configured using uplink component carriers and downlink component carriers, whereas the secondary cell may be configured using only downlink component carriers.
  • the set serving cells include one primary cell and one or more secondary cells.
  • the primary cell is a serving cell in which an initial connection establishment (initial connection establishment) procedure has been performed, a serving cell that has initiated a connection re-establishment procedure, or a cell designated as a primary cell in a handover procedure.
  • a secondary cell may be set when an RRC connection is established between the base station apparatus 1 (or serving cell) and the terminal apparatus 2 or afterwards.
  • a plurality of serving cells may be configured by one base station apparatus 1, or a plurality of serving cells may be configured by a plurality of base station apparatuses 1. Moreover, one serving cell may be comprised by the some base station apparatus 1.
  • uplink and downlink frequency bands (UL / DL operating band) and duplex modes (TDD, FDD) are associated with one index.
  • uplink and downlink frequency bands (operating bands) and duplex modes are managed by one table.
  • This index may be called an E-UTRA operating band (E-UTRA-Operating Band), an E-UTRA band (E-UTRA Band), or a band.
  • index 1 may be referred to as band 1, index 2 as band 2, and index n as band n.
  • the uplink operating band is 1920 MHz to 1980 MHz
  • the downlink operating band is 2110 MHz to 2170 MHz
  • the duplex mode is FDD.
  • the uplink and downlink operating bands are 1900 MHz to 1920 MHz
  • the duplex mode is TDD.
  • new uplink and downlink frequency bands may be set, and a new duplex mode may be associated.
  • a combination of bands capable of carrier aggregation may be set. For example, it may be shown that carrier aggregation by component carriers in band 1 and band 5 is possible. That is, whether or not carrier aggregation by component carriers in different bands is allowed (valid or invalid) may be indicated.
  • the combination of the band supported by the terminal device 2 and the band capable of carrier aggregation is set in the function information (UE capability, UE-EUTRA-Capability) of the terminal device 2.
  • the function information UE capability, UE-EUTRA-Capability
  • the present invention may be applied to some of a plurality of set cells.
  • a cell set in the terminal device 2 may be referred to as a serving cell.
  • 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.
  • subframes capable of downlink transmission (downlink subframes, subframes reserved for downlink transmission) and subframes capable of uplink transmission (uplink subframes, uplink transmission).
  • a time domain in which downlink transmission is possible (a symbol corresponding to the time domain) is called a downlink pilot time slot (DwPTS: Downlink Pilot Time Slot), and a time domain in which uplink transmission is possible ( A symbol corresponding to the time domain) is referred to as an uplink pilot time slot (UpPTS: Uplink Pilot Time Slot).
  • DwPTS Downlink Pilot Time Slot
  • UpPTS Uplink Pilot Time Slot
  • the terminal apparatus 2 can receive a downlink signal transmitted from the base station apparatus 1
  • a subframe j different from the subframe i is an uplink subframe.
  • an uplink signal can be transmitted from the terminal device 2 to the base station device 1.
  • 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. Can be sent.
  • TDD UL / DL settings (TDD UL / DL configuration (s), TDD uplink-downlink configuration (s)), TDD settings ( TDD ⁇ configuration (s), tdd-Config, TDD config), and UL / DL (UL-DL) settings (uplink-downlinksconfiguration (s))
  • TDD UL / DL settings TDD UL / DL settings
  • TDD ⁇ configuration ⁇ configuration
  • tdd-Config TDD config
  • UL-DL uplink-downlinksconfiguration (s))
  • the terminal device 2 can perform a transmission / reception process by regarding a certain subframe as an uplink subframe, a downlink subframe, or a special subframe.
  • the TDD UL / DL setting may also be referred to as subframe setting (subframeConfig) or subframe assignment (subframeAssignment).
  • FIG. 3 shows an example of TDD UL / DL settings.
  • FIG. 3 shows a correspondence relationship between a subframe pattern composed of a downlink subframe, a special subframe, and an uplink subframe and an index (or value or parameter).
  • the configuration of the special subframe defines a plurality of patterns and is managed in a table.
  • Each of the plurality of patterns is associated with a value (index), and when the value is notified, the terminal device performs processing of the special subframe based on the pattern associated with the notified value.
  • information (specialSubframePatterns) related to the configuration of the special subframe can also be notified from the base station apparatus 1 to the terminal apparatus 2 using higher layer signaling or system information (system information block).
  • system information system information block
  • a traffic adaptive control technique that changes the ratio of uplink resources and downlink resources according to uplink traffic and downlink traffic (information amount, data amount, communication amount) may be applied to TDD.
  • the ratio between the downlink subframe and the uplink subframe can be dynamically changed.
  • a downlink subframe and an uplink subframe can be adaptively switched for a certain subframe.
  • Such a subframe is called a flexible subframe.
  • Base station apparatus 1 can receive an uplink signal or transmit a downlink signal in a flexible subframe depending on conditions (situation, state, mode).
  • the terminal apparatus 2 can perform reception processing by regarding the flexible subframe as a downlink subframe.
  • the TDD for dynamically changing the ratio of 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) or It may also be called eIMTA (enhancedanceInterference Mitigation and Traffic Adaptation).
  • DTDD Dynamic TDD
  • eIMTA enhanced Interference Mitigation and Traffic Adaptation
  • the TDD UL / DL setting information may be transmitted by L1 signaling (PDCCH, DCI format, etc.).
  • a guard band is set in consideration of leakage power and interference generated between a plurality of component carriers (or adjacent channels).
  • the communication system reduces the influence of leakage power and interference between component carriers (or adjacent channels) by setting a guard band.
  • Guard band is set according to the bandwidth used. This guard band is sometimes referred to as a standard guard band (Nominal Guard Band). However, resources cannot be effectively used by setting a guard band. Therefore, a guard band may not be set in a certain band.
  • the carrier frequency and bandwidth (system bandwidth, channel bandwidth, transmission bandwidth) for the uplink are not set. Good.
  • the carrier frequency and bandwidth for the uplink are set to the same values as the carrier frequency and bandwidth (system bandwidth, channel bandwidth, transmission bandwidth) for the downlink.
  • the number of downlink component carriers and the number of uplink component carriers are the same. In other words, in typical TDD, the carrier frequency, bandwidth, and number of component carriers cannot be changed between the uplink and the downlink.
  • leakage power is generated from the signals (channel, component carrier) used for communication. If so, they may interfere with each other. For example, in a channel used between telecommunications carriers having carrier frequencies adjacent to each other, when there is a leakage power or an adjacent channel leakage power ratio (ACLR: Adjacent Channel Leakege Ratio), the signals may interfere with each other.
  • ACLR Adjacent Channel Leakege Ratio
  • FDD is a technology that enables downlink and uplink communications in different frequency bands (carrier frequency, component carrier).
  • the component carrier for downlink and the component carrier for uplink are different.
  • the bandwidths (system bandwidth, channel bandwidth, transmission bandwidth) for the downlink and uplink may be different. That is, the bandwidth for each downlink and uplink may be set individually.
  • the number of downlink component carriers and the number of uplink component carriers may be different. That is, a certain cell may be configured with a downlink component carrier and an uplink component carrier, and another cell may be configured with only a downlink component carrier. However, the primary cell always includes a downlink component carrier and an uplink component carrier.
  • a cellular communication system in which a plurality of areas covered by the base station device 1 are arranged in a cell shape may be applied.
  • a single base station apparatus 1 may manage a plurality of cells. Moreover, the single base station apparatus 1 may manage several RRH (Remote * Radio
  • a single base station apparatus 1 may manage a plurality of local areas. Moreover, the single base station apparatus 1 may manage several HetNet (Heterogeneous Network). Further, a single base station apparatus 1 may manage a plurality of low power base station apparatuses (LPN: “Low” Power “Node”).
  • LPN Low power base station apparatuses
  • the terminal device 2 measures the reference signal received power (RSRP: Reference Signal Received Power) based on the cell-specific reference signal (CRS: Cell-specific Reference Signal (s)).
  • RSRP Reference Signal Received Power
  • CRS Cell-specific Reference Signal
  • NCT new Carrier Type
  • PDCH Physical Discovery Channel
  • NDS New Discovery Signal
  • DRS Discovery Reference Signal
  • DS The introduction of Discovery (Signal) is under consideration.
  • NCT may also be referred to as an additional carrier type (ACT: “Additional Carrier Type”).
  • ACT Additional Carrier Type
  • an existing carrier type may be referred to as a legacy carrier type (LCT: “Legacy Carrier Type”).
  • X / Y includes the meaning of “X or Y”. In embodiments of the present invention, “X / Y” includes the meanings of “X and Y”. In embodiments of the present invention, “X / Y” includes the meaning of “X and / or Y”.
  • a channel means a medium used for signal transmission.
  • a physical channel means a physical medium used for signal transmission.
  • the physical channel may be added in the future in LTE and LTE-A and later standard releases, or the structure and format may be changed or added. Even in such a case, each embodiment of the present invention Does not affect the description.
  • 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 resource block may be referred to as a physical resource block.
  • a cyclic prefix (CP: Cyclic Prefix) corresponding to the redundant part of the physical channel is added to the physical channel and transmitted.
  • the number of symbols arranged in one slot varies depending on the length of the CP. For example, in the case of a standard CP (Normal CP), 7 symbols can be arranged in one slot, and in the case of an extended CP (Extended) CP) (that is, a CP having a longer CP length than the standard CP), 6 symbols in one slot. Symbol arrangement is possible.
  • 24 subcarriers can be arranged in one resource block. It may be applied to a specific physical channel.
  • 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 Format Indicator Channel), Physical Downlink Control Channel (PDCCH: DCPhysical Downlink Control Channel), Physical Hybrid ARQ Indicator Channel (PHICH: 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.
  • the downlink reference signal (DL-RS: 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).
  • DL-RS Downlink Reference Signal
  • CRS Cell Specific Reference Signal
  • UERS terminal device specific reference signal
  • CSI channel state information reference signal
  • -RS Channel State Information 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 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 (Synchronization Signal) is composed of three types of PSS and SSS composed of 31 types of codes arranged alternately in the frequency domain, and identifies the base station apparatus 1 by the combination of PSS and SSS. 504 physical layer cell identifiers (PCI: [Physical] layer [Cell Identity], [Physical] Cell [Identity], [Physical] Cell [Identifier]) and frame timing for radio synchronization are shown.
  • PCI Physical layer cell identifiers
  • the terminal device 2 specifies the cell identifier of the synchronization signal received by the cell search. Note that the cell identifier may be referred to as a cell ID.
  • the physical layer cell identifier may be referred to as a physical cell ID.
  • the physical broadcast channel (PBCH: “Physical” Broadcast “Channel”) is transmitted for the purpose of notifying control parameters (broadcast information and system information) commonly used by the terminal devices 2 in the cell. Also, broadcast information not notified by PBCH (for example, SIB1 and some system information) is transmitted by PDSCH via DL-SCH.
  • PBCH Physical Broadcast “Channel”
  • broadcast information not notified by PBCH for example, SIB1 and some system information
  • broadcast information not notified by PBCH for example, SIB1 and some system information
  • broadcast information not notified by PBCH for example, SIB1 and some system information
  • broadcast information not notified by PBCH for example, SIB1 and some system information
  • broadcast information not notified by PBCH for example, SIB1 and some system information
  • PDSCH downlink Control Information
  • a cell global identifier CGI: Cell Global Identifier
  • TAI Tracking Area Identifier
  • random access setting information such as a transmission timing timer
  • DL-RS is classified into multiple types according to its use.
  • cell-specific reference signals CRS: ⁇ ⁇ ⁇ ⁇ ⁇ Cell-specific reference ⁇ signals
  • CRS Cell-specific reference signals
  • the terminal device 2 measures the reception quality for each cell by receiving the CRS.
  • the terminal apparatus 2 may use CRS as a reference signal for PDCCH / EPDCCH transmitted through the same antenna port as that of CRS or for demodulation of PDSCH.
  • a sequence used for CRS a sequence identifiable for each cell is used.
  • the CRS may be transmitted from the base station apparatus 1 in all downlink subframes, but the terminal apparatus 2 may receive only in the specified downlink subframe.
  • the DL-RS is also used to estimate downlink propagation path fluctuations.
  • the DL-RS used for estimating the channel fluctuation may be referred to as a channel state information reference signal (CSI-RS: “Channel State Information References Signals”) or a CSI reference signal.
  • CSI-RS that is not actually transmitted or transmitted at zero power is a zero power channel state information reference signal (ZP CSI-RS: Zero Power Channel State Information Reference Signals) or zero power CSI reference. You may call it a signal.
  • ZP CSI-RS Zero Power Channel State Information Reference Signals
  • the CSI-RS to which the signal is actually transmitted may be referred to as a non-zero power channel state information reference signal (NZP CSI-RS: Non Zero Power Channel State Information Reference Signals) or a non-zero power CSI reference signal. .
  • the downlink resource used for measuring the interference component may be referred to as a channel state information interference measurement resource (CSI-IMR: Channel State Information -Interference Measurement Resource) or a CSI-IM resource.
  • CSI-IMR Channel State Information -Interference Measurement Resource
  • the terminal apparatus 2 may measure an interference signal in order to calculate the CQI value.
  • the DL-RS individually set for each terminal device 2 includes a terminal device-specific reference signal (UERS: UE specific Reference Signals) or an individual reference signal (Dedicated Reference Signals), a downlink demodulation reference signal (DL DMRS: Downlink) This is a reference signal for each terminal device 2 and is used for demodulation of PDCCH or PDSCH transmitted through the same antenna port as UERS.
  • UERS terminal device-specific reference signal
  • DL DMRS Downlink demodulation reference signal
  • these DL-RS sequences may be generated based on a pseudo-random sequence. Also, these DL-RS sequences may be generated based on Zadoff-Chu sequences. Also, these DL-RS sequences may be generated based on a gold sequence. Also, these DL-RS sequences may be pseudo-random sequences, Zadoff-Chu sequences, or gold sequence variants or variants.
  • the physical downlink shared channel (PDSCH: Physical Downlink Shared Channel) is used to transmit downlink data (DL-SCH).
  • PDSCH is also used when system information is transmitted on DL-SCH.
  • Information on resource allocation of PDSCH (Resource Block assignment, Resource allocation) is transmitted using PDCCH (DCI format).
  • the PDSCH is also used to notify parameters (information elements, RRC messages) related to the downlink and uplink.
  • a physical downlink control channel (PDCCH: Physical Downlink Control Channel) is transmitted in some OFDM symbols from the head of each subframe, and resource allocation information according to the scheduling of the base station device 1 to the terminal device 2; It is used for the purpose of instructing the adjustment amount of increase / decrease of transmission power.
  • the terminal device 2 monitors (monitors) the PDCCH addressed to itself before transmitting / receiving a layer 3 message (paging, handover command, RRC message, etc.), and transmits an uplink grant during transmission and a downlink grant (downlink assignment) during reception. It is necessary to obtain resource allocation information (also referred to as “mentment”) from the PDCCH addressed to the own station.
  • the PDCCH may be configured to be transmitted from the base station apparatus 1 to the terminal apparatus 2 in the resource block area allocated individually (dedicated), in addition to the above-described OFDM symbol. is there.
  • the PDCCH transmitted in the resource block (RB: ⁇ Resource ⁇ Block) allocated individually (dedicated) from the base station device 1 to the terminal device 2 is called 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.
  • the EPDCCH may be referred to as a second control channel.
  • the resource area to which the PDCCH can be allocated may be referred to as a first control channel area, and the resource area to which the EPDCCH can be allocated may be referred to as a second control channel area.
  • PDCCH basically includes EPDCCH.
  • the base station apparatus 1 may transmit PCFICH, PHICH, PDCCH, EPDCCH, PDSCH, synchronization signal (PSS / SSS), and DL-RS in the DwPTS of the special subframe. Moreover, the base station apparatus 1 does not need to transmit PBCH in DwPTS of a special subframe.
  • the terminal device 2 may transmit the PRACH and SRS in the UpPTS of the special subframe.
  • the PRACH may be transmitted in format 4 (PRACH format 4).
  • the terminal device 2 does not need to transmit PUCCH, PUSCH, and DMRS in UpPTS of a special subframe.
  • the terminal device 2 may transmit PUCCH and / or PUSCH and / or DMRS in the UpPTS of the special subframe.
  • the terminal device 2 monitors a set of PDCCH candidates (PDCCH candidates) and / or EPDCCH candidates (EPDCCH candidates).
  • the PDCCH may include an EPDCCH.
  • the PDCCH candidate indicates a candidate that the PDCCH may be mapped and transmitted by the base station apparatus 1.
  • a PDCCH candidate is composed of one or a plurality of control channel elements (CCE: Control Channel Element).
  • the monitor may include that the terminal device 2 tries to decode (decode) each PDCCH in the set of PDCCH candidates according to all the DCI formats to be monitored.
  • the search space is a set of resources that may be used by the base station apparatus 1 for PDCCH transmission.
  • a common search space CSS: Common Search Space
  • USS terminal device specific search space
  • CSS and USS may be duplicated in the primary cell.
  • CSS is used for transmission of downlink control information to a plurality of terminal apparatuses 2. That is, CSS is defined by resources common to the plurality of terminal devices 2.
  • the USS is used for transmission of downlink control information to a specific terminal apparatus 2. That is, the USS is individually set for a specific terminal device 2. Further, the USS may be set redundantly for a plurality of terminal devices 2.
  • the terminal device 2 monitors one CSS at each of the aggregation levels 4 and 8 for each Non-DRX subframe in the primary cell.
  • the terminal device 2 monitors CSS for PDCCH (DCI format) without CIF (Carrier Indicator Field).
  • the base station apparatus 1 does not transmit the PDCCH accompanied by the CIF to the CSS.
  • the downlink control information is transmitted from the base station apparatus 1 to the terminal apparatus 2 in a specific format (configuration, form).
  • This format may be referred to as a DCI format.
  • transmitting the DCI format includes transmitting DCI in a certain format.
  • the DCI format can be rephrased as a format for transmitting DCI.
  • a plurality of formats are prepared for the DCI format transmitted from the base station apparatus 1 to the terminal apparatus 2 (for example, DCI format 0/1 / 1A / 1B / 1C / 1D / 2 / 2A / 2B / 2C / 2D). / 3 / 3A / 4).
  • fields (bit fields) corresponding to various downlink control information are set.
  • the base station apparatus 1 When the base station apparatus 1 transmits common DCI (single DCI, same DCI) to a plurality of terminal apparatuses 2 in a certain DCI format, the base station apparatus 1 transmits the terminal apparatus 2 using the PDCCH (or EPDCCH) CSS. In contrast, when DCI is individually transmitted in a certain DCI format, it is transmitted by PDCCH (or EPDCCH) USS.
  • PDCCH or EPDCCH
  • the DCI transmitted in the DCI format includes PUSCH and PDSCH resource allocation, modulation and coding scheme, sounding reference signal request (SRS request), channel state information request (CSI request), initial transmission of a single transport block, or There are a retransmission instruction, a transmission power control command for PUSCH, a transmission power control command for PUCCH, a cyclic shift of UL DMRS, an index of OCC (Orthogonal Cover Code), and the like.
  • Various other DCIs are defined in specifications (standards).
  • the format used for uplink transmission control may be referred to as an uplink DCI format (for example, DCI format 0/4) or DCI related to the uplink.
  • the DCI format used for uplink transmission control may be referred to as an uplink grant (UL grant: Uplink grant).
  • the format used for downlink reception control (eg, PDSCH scheduling) is changed to downlink DCI format (eg, DCI format 1 / 1A / 1B / 1C / 1D / 2 / 2A / 2B / 2C / 2D) or downlink. It may be referred to as related DCI.
  • the DCI format used for downlink reception control may be referred to as a downlink grant (DL (grant: Downlink grant) or a downlink assignment (DL assignment: Downlink assignment).
  • a format used for adjusting the transmission power of each of the plurality of terminal apparatuses 2 may be referred to as a group triggering DCI format (for example, DCI format 3 / 3A).
  • a CRC scrambled by a dedicated RNTI may be added to the DCI format.
  • DCI format 0 is information related to PUSCH resource allocation and modulation scheme necessary for scheduling one PUSCH in one serving cell, information related to transmission power control (TPC: Transmit Power Control) command for PUSCH, etc. Used to send Also, these DCIs are transmitted by PDCCH / EPDCCH. It can be said that the DCI format is composed of at least one DCI.
  • the DCI format includes DCI transmitted depending on whether it is the same DCI format or FDD (FDD cell) or TDD (TDD cell). For example, in DCI format 0, when TDD UL / DL setting is 0, uplink index (UL index: Uplink index) is transmitted, and when TDD UL / DL setting is 1 to 6, downlink assignment index (DAI : Downlink Assignment Index) is sent. Further, even with the same DCI, the bit size may be different between FDD and TDD. For example, the HARQ process number has a different bit size between FDD and TDD (3 bits for FDD and 4 bits for TDD). In the case of the DCI format 2B / 2C / 2D, an SRS request is transmitted only to TDD.
  • DCI format 2B / 2C / 2D an SRS request is transmitted only to TDD.
  • the terminal device 2 monitors the PDCCH in the CSS and / or USS of the PDCCH region, and detects the PDCCH addressed to itself.
  • RNTI assigned to the terminal device 2 by the base station device 1 is used for transmission of downlink control information (transmission on the PDCCH). Specifically, a cyclic redundancy check (CRC: Cyclic Redundancy check) parity bit is added to the DCI format (which may be downlink control information), and after the addition, the CRC parity bit is scrambled by the RNTI.
  • CRC Cyclic Redundancy check
  • the terminal device 2 tries to decode the DCI format to which the CRC parity bit scrambled by the RNTI is added, and detects the DCI format in which the CRC is successful as the DCI format addressed to the own device (also called blind decoding). ) That is, the terminal device 2 tries to decode the PDCCH with the CRC scrambled by the RNTI, and detects the PDCCH in which the CRC is successful as the PDCCH addressed to the own device.
  • the terminal device 2 tries to decode (for example, perform blind decoding) in accordance with the aggregation level of CSS and USS, the number of PDCCH candidates, and the size of the DCI format (DCI format size, payload size of the DCI format). For example, in CSS, there are 4 and 8 aggregation levels, the number of PDCCH candidates is 6 and 4 in total, and there are two types of DCI formats with different sizes, so the number of blind decoding for CSS is 12 times. It becomes. That is, if the DCI addressed to the terminal device 2 is transmitted using the PDCCH by CSS, the terminal device 2 can detect any DCI format by performing blind decoding up to 12 times in CSS. it can.
  • the blind decoding number for USS is 48 times. That is, if the DCI addressed to the terminal device 2 is transmitted using the PDCCH in the USS, the terminal device 2 can detect any DCI format by performing blind decoding up to 48 times in the USS. it can. That is, if the DCI addressed to itself is transmitted using PDCCH, the terminal device 2 can detect any DCI format by performing blind decoding up to 60 times.
  • the number of blind decoding is the number of DCI formats having different sizes (DCI formats having different sizes such as 40 bits and 44 bits), the aggregation level of search space, the number of PDCCH candidates, and the number of component carriers (cells) that perform cross carrier scheduling. Decide by number.
  • the terminal device 2 performs blind decoding as one DCI format even if different types of DCI formats are used. For example, since the sizes of DCI format 0 and DCI format 1A are the same, it is regarded as one DCI format and blind decoding is performed. Also, the DCI format monitored by the terminal device 2 depends on the transmission mode set in each serving cell.
  • the terminal device 2 identifies whether the DCI format 0 or the DCI format 1A is based on DCI (Flag for0format0 / format1A differentiation) for identifying the DCI format 0 / 1A transmitted in the DCI format. be able to.
  • DCI Frlag for0format0 / format1A differentiation
  • a field for switching different DCI formats having the same format size may be set in each DCI format. That is, a DCI field indicating whether a certain DCI format is the first DCI format or the second DCI format may be set in the first DCI format and the second DCI format.
  • the total number (or threshold value) of blind decoding may be set (defined) in advance. Note that the total number of blind decoding may be different depending on whether carrier aggregation is set. That is, the total number of blind decoding may be changed according to the number of component carriers (serving cells) that perform blind decoding.
  • the terminal device 2 may be scheduled with a plurality of serving cells. However, at most one random access procedure is performed regardless of the number of serving cells.
  • cross-carrier scheduling with a carrier indicator field CIF: “Carrier” Indicator “Field”
  • CIF Carrier indicator field
  • it enables a PDCCH of one serving cell to schedule resources for other serving cells.
  • cross carrier scheduling is not applied to the primary cell.
  • the primary cell is scheduled on the PDCCH of the primary cell.
  • cross-carrier scheduling is not applied with respect to the secondary cell.
  • cross carrier scheduling may be applied to the secondary cell.
  • CIF Carrier Indicator Field
  • uplink grant DCI format related to uplink
  • downlink grant DCI format related to downlink
  • Uplink grants or downlink grants for different cells can be transmitted. That is, it is possible to control uplink / downlink transmission for a plurality of cells with one cell using a DCI format including CIF.
  • the terminal apparatus 2 in which the CIF related to the monitoring of the PDCCH in the serving cell c is set monitors the PDCCH in which the CRC scrambled by the C-RNTI is set in the PDCCH USS of the CIF and the serving cell c.
  • the terminal apparatus 2 in which the CIF related to monitoring the PDCCH in the primary cell is set monitors the PDCCH in which the CRC scrambled by the SPS-RNTI is set in the PDCCH USS of the CIF and the primary cell.
  • the base station apparatus 1 In cross carrier scheduling, the base station apparatus 1 is notified that the terminal apparatus 2 supports the function using the function information (UE-EUTRA-Capability), and the base station apparatus 1 is configured for cross carrier scheduling ( (CrossCarrierSchedulingConfig) is performed on the terminal device 2 and the setting information is transmitted to the terminal device 2, communication can be performed using cross carrier scheduling.
  • This setting information may be notified using higher layer signaling.
  • the setting related to cross carrier scheduling may include information (cif-Presence) indicating whether or not CIF is included in the DCI format of PDCCH / EPDCCH.
  • the settings related to cross carrier scheduling include information (schedulingCellId) indicating the cells that signal downlink allocation (downlink grant) and uplink grant (which cell signals downlink allocation and uplink grant). May be. This information is called scheduling cell ID information.
  • the setting related to cross carrier scheduling may include information (pdsch-Start) indicating a PDSCH start OFDM symbol for the cell indicated by the scheduling cell ID information. Note that the scheduling cell ID information may be set independently for the uplink and the downlink for the terminal device 2 that independently supports the function of performing cross-carrier scheduling for the uplink and the downlink. Also, information indicating the PDSCH start OFDM symbol may be set only for the downlink.
  • the downlink resource for semi-persistent scheduling is set in the primary cell, and only the PDCCH allocation for the primary cell can be prioritized over the semi-persistent allocation.
  • uplink resources for semi-persistent scheduling are set in the primary cell, and only the PDCCH allocation for the primary cell can be prioritized over the semi-persistent allocation.
  • the link between the uplink and the downlink makes it possible to distinguish the serving cell to which the downlink grant or the uplink grant is applied when there is no CIF.
  • the downlink grant received in the primary cell corresponds to the downlink transmission in the primary cell.
  • the uplink grant received in the primary cell corresponds to the uplink transmission in the primary cell.
  • the downlink grant received in the secondary cell #n corresponds to the downlink transmission in the secondary cell #n.
  • the uplink grant received by the secondary cell #n corresponds to the uplink transmission in the secondary cell #n.
  • the uplink grant is ignored by the received terminal device 2.
  • the terminal device 2 When monitoring PDCCH with CIF corresponding to a certain secondary cell is set in another serving cell, the terminal device 2 does not expect to monitor the PDCCH of the secondary cell. In that case, the base station apparatus 1 does not need to transmit DCI with respect to the terminal device 2 using PDCCH by the secondary cell.
  • RNTI includes C-RNTI (Cell-Radio Network Temporary Identifier).
  • C-RNTI Cell-Radio Network Temporary Identifier
  • C-RNTI is a unique (unique) identifier used for RRC connection and scheduling identification.
  • C-RNTI is used for dynamically scheduled unicast transmissions. Note that C-RNTI is applied with the same C-RNTI (same C-RNTI) in all serving cells when carrier aggregation is set.
  • Temporary C-RNTI is an identifier used for a random access procedure.
  • the terminal device 2 may decode the DCI format (for example, DCI format 0) related to the uplink to which the CRC scrambled by the Temporary C-RNTI is added using only the CSS. Further, the terminal device 2 may attempt to decode the DCI format (for example, DCI format 1A) related to the downlink to which the CRC scrambled by the Temporary C-RNTI is added by using CSS and USS.
  • the base station apparatus 1 when transmitting DCI by CSS, the base station apparatus 1 adds a CRC parity bit scrambled by Temporary C-RNTI or C-RNTI to DCI (DCI format), and when transmitting DCI by USS, CRC scrambled with C-RNTI may be added to (DCI format).
  • the physical uplink shared channel (Physical Uplink Shared Channel; PUSCH) is mainly used to transmit uplink data and uplink control information (Uplink Control Information; UCI).
  • the UCI transmitted on the PUSCH includes channel state information (CSI: Channel State Information) and / or ACK / NACK.
  • the CSI transmitted on the PUSCH includes an aperiodic CSI (A-CSI: Aperiodic CSI) and a periodic CSI (P-CSI: Periodic CSI).
  • A-CSI Aperiodic CSI
  • P-CSI Periodic CSI
  • the resource allocation information of the physical uplink shared channel is indicated by the physical downlink control channel.
  • the PUSCH scheduled by the dynamic scheduling grant transmits uplink data.
  • PUSCH scheduled by a random access response grant transmits the information (for example, the identification information of the terminal device 2, message 3) of the local station relevant to random access.
  • the parameter used in order to set the transmission power with respect to transmission by PUSCH may differ according to the kind of detected grant.
  • the control data is transmitted in the form of channel quality information (CQI and / or PMI), HARQ response information (HARQ-ACK, HARQ-ACK response), and rank information (RI). That is, the control data is transmitted in the form of uplink control information.
  • the physical uplink control channel (PUCCH: Physical Uplink Control Channel) is an acknowledgment (ACK / NACK: Acknowledgement / Negative Acknowledgement, HARQ-ACK) or downlink for downlink data transmitted using the physical downlink shared channel.
  • SR ⁇ Scheduling 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 composed of HARQ ACK and / or SR, the UCI may be transmitted in the format 1 / 1a / 1b / 3 PUCCH (PUCCH format 1 / 1a / 1b / 3). Further, when the UCI is composed of CSI, the UCI may be transmitted using a PUCCH of format 2 / 2a / 2b (PUCCH format 2 / 2a / 2b).
  • the PUCCH format 1 / 1a / 1b includes a shortened format (Shortened format) punctured by one symbol and a standard format (Normal format) that is not punctured in order to avoid collision with the SRS.
  • PUCCH format 1 / 1a / 1b is transmitted in a shortened format in the SRS subframe.
  • PUCCH format 1 / 1a / 1b is transmitted in the standard format in the SRS subframe. In that case, even if transmission of SRS arises, SRS does not need to be transmitted.
  • the CSI report uses periodic CSI report (P-CSI reporting) that reports channel state information and the DCI format when an event condition for triggering the CSI report is satisfied periodically or There is an aperiodic CSI report (A-CSI reporting) for reporting channel state information when a CSI report is requested by a CSI request transmitted in this manner.
  • Periodic CSI reporting is performed on PUCCH or PUSCH, and aperiodic CSI reporting is performed on PUSCH.
  • the terminal device 2 can also transmit CSI without uplink data on the PUSCH. That is, P-CSI is transmitted using PUCCH or PUSCH, and A-CSI is transmitted using PUSCH.
  • the terminal device 2 can also transmit CSI (A-CSI) without uplink data on the PUSCH.
  • PUCCH subframes (reporting instances) capable of CSI reporting are determined based on the period and subframe offset associated with an index (CQIPMI index, RI index) set in an upper layer.
  • the index set in the upper layer can be set for each subframe set set for measuring CSI.
  • the index may be regarded as common between the subframe sets.
  • one P-CSI report for each serving cell is set by higher layer signaling.
  • one or more P-CSI reports for each serving cell are set by higher layer signaling.
  • the CQI report in a subframe of a serving cell indicates the channel quality in a specific part (part) of the serving cell bandwidth indicated as the bandwidth part. It is a report.
  • the CSI report type supports the PUCCH CSI report mode.
  • the CSI report type may be referred to as PUCCH reporting type (PUCCH reporting type).
  • Type 1 reporting supports CQI feedback for terminal selection subbands.
  • Type 1a reporting supports subband CQI and a second PMI feed bank.
  • Type 2, type 2b, and type 2c reports support wideband CQI and PMI feedback.
  • Type 2a reports support wideband PMI feedbanks.
  • Type 3 reports support RI feedback.
  • Type 4 reports support wideband CQI.
  • Type 5 support RI and wideband PMI feedback.
  • Type 6 reports support RI and PTI feedback.
  • the uplink reference signal (UL-RS: Uplink Reference Signal) is a demodulation reference signal (DMRS: Demodulation) used by the base station apparatus 1 to demodulate the physical uplink control channel PUCCH and / or the physical uplink shared channel PUSCH.
  • Reference Signal and the sounding reference signal (SRS: Sounding Reference Signal) used mainly by the base station apparatus 1 to estimate the 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 reference signal, an uplink pilot signal, or an uplink pilot channel.
  • these uplink reference signal sequences may be generated based on pseudo-random sequences. Also, these uplink reference signal sequences may be generated based on Zadoff-Chu sequences. In addition, these uplink reference signal sequences may be generated based on a gold sequence. In addition, these uplink reference signal sequences may be pseudo-random sequences, Zadoff-Chu sequences, or gold sequence variants / modifications.
  • 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).
  • A-SRS uses a signal specialized for uplink channel estimation (for example, sometimes referred to as trigger type 1a SRS) and channel reciprocity in TDD in cooperative communication.
  • the channel state (CSI, CQI, PMI, RI) may be divided into signals (for example, sometimes referred to as trigger type 1b SRS) used to cause the base station apparatus 1 to measure.
  • CSI, CQI, PMI, RI may be divided into signals (for example, sometimes referred to as trigger type 1b SRS) used to cause the base station apparatus 1 to measure.
  • DMRS is set corresponding to each of PUSCH and PUCCH. DMRS is time-multiplexed in the same subframe as PUSCH or PUCCH and transmitted.
  • DMRS may have a different time multiplexing method for PUSCH and PUCCH.
  • DMRS for PUSCH is arranged in one symbol in one slot composed of 7 symbols
  • DMRS for PUCCH is arranged in three symbols in one slot composed of 7 symbols.
  • SRS is notified of various parameters (bandwidth, cyclic shift, transmission subframe, etc.) by higher layer signaling.
  • a subframe in which SRS is transmitted is determined based on information related to a transmission subframe included in the SRS setting notified by higher layer signaling.
  • Information related to transmission subframes includes information set specifically for a cell (shared information) and information set specifically for a terminal device (dedicated information and individual information).
  • the information set in a cell-specific manner includes information indicating a subframe in which the SRS shared by all the terminal devices 2 in the cell is transmitted.
  • the information set specifically for the terminal device includes information indicating a subframe offset and a periodicity that are a subset of the subframes set specific to the cell.
  • the terminal device 2 can determine a subframe in which an SRS can be transmitted (sometimes referred to as an SRS subframe or an SRS transmission subframe).
  • the terminal apparatus 2 punctures the PUSCH time resource by the amount of the symbol for which the SRS is transmitted, and the PUSCH is transmitted using the time resource. Can be sent.
  • the terminal device 2 that transmits PUSCH can prevent characteristic deterioration.
  • channel estimation accuracy can be ensured for the terminal device 2 that transmits the SRS.
  • the information set uniquely for the terminal device may be set independently for P-SRS and A-SRS.
  • the first uplink reference signal is periodically transmitted based on 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.
  • information (shared parameters, shared information) set for each cell is notified using system information or a dedicated control channel (DCCH: “Dedicated Control Channel”).
  • DCCH dedicated Control Channel
  • information (dedicated parameters, individual parameters, dedicated information, and individual information) set uniquely for the terminal device is notified using a shared control channel (CCCH: “Common” Control “Channel”).
  • CCCH shared control channel
  • Such information may be notified by an RRC message.
  • the RRC message may be notified by an upper layer.
  • a physical random access channel (PRACH: “Physical Random Access Channel”) 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 a means for accessing the base station device 1 by the terminal device 2.
  • the terminal apparatus 2 transmits a radio resource request when a physical uplink control channel is not set for a scheduling request (SR: Scheduling Request) and transmission timing adjustment information necessary for matching the uplink transmission timing with the reception timing window of the base station apparatus.
  • SR Scheduling Request
  • a physical random access channel is used to request the base station apparatus 1 for timing advance (also referred to as TA: “Timing” Advance).
  • the terminal device 2 transmits a preamble sequence using the radio resource for the physical random access channel set by the base station device 1.
  • the terminal device 2 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),
  • the uplink state is managed while the transmission timing timer is valid (during time measurement) during the transmission timing adjustment state, and outside the valid period (during stop), the transmission timing is not adjusted (transmission timing is not adjusted).
  • the layer 3 message is a control plane (C-plane: Control-plane) message exchanged in the radio resource control (RRC: Radio 2 Resource ⁇ Control) layer between the terminal device 2 and the base station device 1, and is RRC signaling or RRC message. Used interchangeably with RRC signaling may also be referred to as higher layer signaling or dedicated signaling.
  • C-plane Control-plane
  • RRC Radio 2 Resource ⁇ Control
  • the random access procedure includes two random access procedures, a contention-based random access procedure (Contention-based Random Access procedure) and a non-contention-based random access procedure (Non-contention-based Random access procedure).
  • the contention-based random access procedure is a random access in which a collision may occur between a plurality of terminal devices 2.
  • non-contention based random access procedure is a random access in which no collision occurs between a plurality of terminal devices 2.
  • the non-contention-based random access procedure is composed of three steps, and a random access preamble assignment (Random Access Preamble assignment) is notified from the base station apparatus 1 to the terminal apparatus 2 by downlink dedicated signaling. .
  • the random access preamble assignment is transmitted by the source base station apparatus (Source eNB) for the handover, in which the base station apparatus 1 allocates a non-contention random access preamble to the terminal apparatus 2, and the target base station apparatus In the case of a handover command generated by (Target eNB) or downlink data arrival, it is signaled by PDCCH.
  • the terminal device 2 that has received the random access preamble assignment transmits a random access preamble (message 1) using the RACH in the uplink. At that time, the terminal device 2 transmits the allocated non-contention random access preamble.
  • the base station apparatus 1 that has received the random access preamble transmits a random access response to the terminal apparatus 2 using downlink data (DL-SCH: Downlink Shared Channel).
  • the information transmitted in the random access response includes an initial uplink grant (random access response grant) and timing adjustment information (Timing Alignment information) for handover, timing adjustment information for downlink data arrival, and a random access preamble identifier. included.
  • the downlink data may be referred to as downlink shared channel data (DL-SCH data).
  • the non-contention based random access procedure is applied to handover, downlink data arrival (Downlink data arrival during RRC_CONNECTED requiring random access procedure), positioning (For positioning purpose during RRC_CONNECTED requiring random access procedure) Is done.
  • the contention-based random access procedure includes initial access from RRC_IDLE (Initial access to RRC_IDLE), re-establishment of RRC connection (RRC connection to reestablishment procedure), handover, downlink data arrival, uplink data arrival (Uplink data to arrival to RRC_CONNECTED applied to requiring (random) access (procedure).
  • the random access procedure according to the present embodiment is a contention-based random access procedure.
  • An example of a contention based random access procedure will be described.
  • the terminal device 2 acquires the system information block type 2 (SIB2) transmitted by the base station device 1.
  • SIB2 is a setting (common information) common to all terminal apparatuses 2 (or a plurality of terminal apparatuses 2) in a cell.
  • the common settings include PRACH settings.
  • the terminal device 2 randomly selects a random access preamble number. Also, the terminal device 2 transmits a random access preamble (message 1) of the selected number to the base station device 1 using the PRACH. The base station apparatus 1 estimates uplink transmission timing using a random access preamble.
  • the base station apparatus 1 transmits a random access response (message 2) using PDSCH.
  • the random access response includes a plurality of pieces of information for the random access preamble detected by the base station device 1.
  • the plurality of pieces of information include a random access preamble number, a Temporary C-RNTI, a TA command (Timing Advance Command), and a random access response grant.
  • the terminal device 2 transmits (initial transmission) uplink data (message 3) using PUSCH scheduled using the random access response grant.
  • the uplink data includes an identifier (information indicating Initial UE-Identity or C-RNTI) for identifying the terminal device 2.
  • the base station apparatus 1 instructs retransmission of the uplink data using the DCI format to which the CRC parity bits scrambled by the Temporary C-RNTI are added.
  • the terminal apparatus 2 uses the same uplink for the PUSCH scheduled using the DCI format to which the CRC parity bit scrambled by the Temporary C-RNTI is added. Resend link data.
  • the base station apparatus 1 can instruct retransmission of the uplink data using PHICH (NACK).
  • NACK PHICH
  • the terminal apparatus 2 retransmits the same uplink data using the PUSCH.
  • the base station apparatus 1 is able to know which terminal apparatus 2 was transmitting the random access preamble and the uplink data by successfully decoding the uplink data and acquiring the uplink data. That is, the base station apparatus 1 cannot know which terminal apparatus 2 is transmitting the random access preamble and the uplink data before successfully decoding the uplink data.
  • the base station apparatus 1 uses the PDSCH to transmit the contention resolution identifier (contention resolution identity) (message 4) generated based on the received InitialUE-Identity. Transmit to device 2.
  • the terminal device 2 considers (1) that the contention resolution of the random access preamble has succeeded, and (2) Temporary C- The value of RNTI is set to C-RNTI, (3) Temporary C-RNTI is discarded, and (4) Random access procedure is considered to have been completed correctly.
  • the base station apparatus 1 when the base station apparatus 1 receives the message 3 including the information indicating the C-RNTI, the base station apparatus 1 converts the DCI format (message 4) to which the CRC parity bit scrambled by the received C-RNTI is added into the terminal apparatus 2 Send to.
  • the terminal device 2 decodes the DCI format to which the CRC parity bit scrambled by C-RNTI is added, the terminal device 2 considers (1) that the contention resolution of the random access preamble has succeeded, and (2) Temporary C. -Discard the RNTI and (3) consider the random access procedure completed correctly.
  • the base station apparatus 1 schedules PUSCH using a random access response grant as part of a contention-based random access procedure (as part of contention based random access procedure).
  • the terminal device 2 transmits uplink data (message 3) using PUSCH scheduled using a random access response grant. That is, the terminal device 2 performs transmission on the PUSCH corresponding to the random access response grant as part of the contention-based random access procedure.
  • the base station apparatus 1 schedules PUSCH using a DCI format to which a CRC scrambled by Temporary C-RNTI is added as part of a contention-based random access procedure. Further, the base station apparatus 1 schedules / instructs transmission on the PUSCH using PHICH (NACK) as part of the contention-based random access procedure.
  • PHICH PHICH
  • the terminal device 2 transmits (retransmits) the uplink data (message 3) using the PUSCH scheduled using the DCI format to which the CRC scrambled by the Temporary C-RNTI is added. Also, the terminal device 2 transmits (retransmits) uplink data (message 3) using the scheduled PUSCH in response to the reception of PHICH. That is, the terminal device 2 performs transmission on the PUSCH corresponding to retransmission of the same uplink data (transport block) as part of the contention-based random access procedure.
  • the base station apparatus 1 may transmit the PCFICH, PHICH, PDCCH, EPDCCH, PDSCH, synchronization signal, and downlink reference signal in the DwPTS of the special subframe. Moreover, the base station apparatus 1 does not need to transmit PBCH in DwPTS of a special subframe.
  • the terminal device 2 may transmit PRACH and SRS in the UpPTS of the special subframe. Moreover, the terminal device 2 does not need to transmit PUCCH, PUSCH, and DMRS in UpPTS of a special subframe.
  • the terminal device 2 may transmit PUCCH and / or PUSCH and / or DMRS in the UpPTS of the special subframe when the special subframe is configured only by GP and UpPTS. .
  • 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 logical channel used for broadcasting 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 logical channel.
  • MIB Master Information Block
  • SIB1 System Information Block Type 1
  • the shared control channel (CCCH: “Common Control Channel”) is a logical 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 logical channel.
  • the dedicated control channel (DCCH: “Dedicated Control Channel”) is a logical channel used to transmit dedicated control information (individual control information) bidirectionally between the terminal device 2 having the RRC connection and the network. For example, cell-specific reconfiguration information is transmitted using this logical channel.
  • RRC signaling Signaling using CCCH or DCCH may be collectively referred to as RRC signaling.
  • Information regarding uplink power control is notified as information notified as broadcast information, information notified as information shared between terminal devices 2 in the same cell (shared information), and dedicated information specific to the terminal device. And information.
  • the terminal device 2 sets transmission power based on only information notified as broadcast information, or information notified as broadcast information / shared information and information notified 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).
  • Radio resource setting includes random access channel (RACH) setting, broadcast control channel (BCCH) setting, paging control channel (PCCH) setting, physical random access channel (PRACH) setting, physical downlink shared channel (PDSCH) setting, physical uplink Link shared channel (PUSCH) setting, physical uplink control channel (PUCCH) setting, sounding reference signal (SRS) setting, setting related to uplink power control, setting related to uplink cyclic prefix length, and the like. That is, the radio resource setting is set to notify a parameter used for generating a physical channel / physical signal.
  • the notified parameter (information element) may be different between the case of being notified as broadcast information and the case of being notified as reset information.
  • the elements are shared setting information (or set of shared parameters and shared parameters) shared between the terminal apparatuses 2 in the same cell, and dedicated setting information (or set of dedicated parameters and dedicated parameters) set for each terminal apparatus 2.
  • the sharing setting information may be transmitted as system information. Further, the share setting information may be transmitted as dedicated information when resetting.
  • These settings include parameter settings.
  • the parameter setting includes setting of a parameter value.
  • the parameter setting includes setting of an index value when the parameter is managed in a table.
  • 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).
  • the information element may include information corresponding to a parameter.
  • 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. Further, the RRC message may be transmitted using system information.
  • the information element (IE: Information Element) is used to specify (specify and set) parameters for various channels / signals / information in system information (SI: System Information) or dedicated signaling (Dedicated Signaling).
  • SI System Information
  • 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 device 2 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 relating to uplink transmission power control notified to the terminal apparatus 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 / re-establishment after a radio link failure (RLF: RLRadio Link Failure) occurs.
  • RLF radio link failure
  • the information used for setting the transmission power may be notified to the terminal device 2 as broadcast information. Further, the information used for setting the transmission power may be notified to the terminal device 2 as shared information. Moreover, the information used for setting the transmission power may be notified to the terminal device 2 as dedicated information (individual information).
  • the communication system in the present embodiment includes a base station device 1 (hereinafter, access point, point, transmission point, reception point, cell, serving cell, transmission device, reception device, transmission station, reception station, transmission antenna group, transmission antenna port group. , Receiving antenna group, receiving antenna port group, communication device, communication terminal, also called eNodeB), primary base station device (macro base station device, first base station device, first communication device, serving base station) Device, anchor base station device, master base station device, first access point, first point, first transmission point, first reception point, macro cell, first cell, primary cell, master cell, master small Also referred to as a cell).
  • a base station device 1 hereinafter, access point, point, transmission point, reception point, cell, serving cell, transmission device, reception device, transmission station, transmission antenna group, transmission antenna port group.
  • Receiving antenna group, receiving antenna port group, communication device, communication terminal also called eNodeB
  • primary base station device macro base station device, first base station device, first communication device, serving base station
  • the primary cell and the master cell may be configured independently (individually).
  • the communication system in the present 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, a second transmission point, Reception points, reference points, low power node equipment (LPN: Low Power Node), micro base station equipment, pico base station equipment, femto base station equipment, small base station equipment, local area base station equipment, phantom base station equipment , Home (indoor) base station devices (Home eNodeB, Home NodeB, HeNB, HNB), second base station device, second communication device, cooperative base station device group, cooperative base station device set, cooperative base station device , Micro cell, pico cell, femto cell, small cell, phantom cell, local area, second cell, also called secondary cell) Also good.
  • RRH Remote Radio Head
  • LPN Low Power Node
  • micro base station equipment pico
  • the communication system includes a terminal device 2 (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) Antenna port group, transmission antenna group, transmission antenna port group, user equipment, and 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 primary base station apparatus, and communication with the terminal apparatus is possible. It may be done.
  • the communication system includes a base station device 1 and a 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 devices 1 may be connected by wire (optical fiber, copper wire, coaxial cable, etc.) or wirelessly (X2 interface, X3 interface, Xn interface, etc.). That is, between a plurality of base station apparatuses 1, communication may be performed at high speed (no delay) using an optical fiber (Ideal backhaul), and communication may be performed at low speed using an X2 interface (Non ideal backhaul). At that time, various information of the terminal device 2 (setting information, channel state information (CSI), function information of the terminal device 2 (UE capability, UE-EUTRA-Capability), information for handover, etc.) may be communicated. Good.
  • the plurality of base station devices 1 may be managed by a network. Moreover, the single base station apparatus 1 may manage one or more relay station apparatuses (Relay).
  • the communication system according to the present embodiment 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. That is, the communication system according to the present embodiment may perform dynamic point selection (DPS: “Dynamic Point Selection”) that dynamically switches a point (transmission point and / or reception point) to communicate with the terminal device 2. Further, the communication system according to the present embodiment may perform cooperative scheduling (CS: CoordinatedordinateScheduling) and cooperative beamforming (CB: Coordinated Beamforming). In addition, the communication system according to the present embodiment may perform joint transmission (JT: Joint Transmission) and joint reception (JR: Joint Reception).
  • CoMP Coordinated Coordinated Multiple ”Points
  • DPS Dynamic Point Selection
  • CS CoordinatedordinateScheduling
  • CB Coordinated Beamforming
  • the communication system according to the present embodiment may perform joint transmission (JT: Joint Transmission) and joint reception (J
  • 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 group to which the small cell belongs includes a master cell group (MCG: “Master Cell Group”) and a secondary cell group (SCG: “Secondary Cell Group”).
  • the master cell group is a group of serving cells related to a master base station apparatus (MeNB) or a primary cell. That is, the MCG is a cell group including a primary cell. Note that the setting information and parameters related to the small cell belonging to the MCG may be set in the terminal device 2 via the primary cell.
  • the secondary cell group is a group of serving cells related to the secondary base station apparatus (SeNB).
  • the MAC entity (MAC entity) on the terminal device 2 side is set for each cell group. MCG and SCG may be operated in the same or different duplex schemes.
  • the SeNB holds at least a special cell that can perform PUCCH transmission.
  • the special cell may be provided with functions unique to other primary cells. That is, the special cell may play the same role as the primary cell in the SCG.
  • UCI may be transmitted to SeNB using PUCCH and PUSCH.
  • a UCI transmission rule or a P-CSI dropping rule may be applied.
  • the setting information and parameters related to the small cell belonging to the SCG may be set in the terminal device 2 via the special cell.
  • the timing adjustment group information (TAG: Timing Advance Group) may be common for each cell group.
  • the TAG of the serving cell belonging to the MCG is the same TAG as the primary cell
  • the TAG of the serving cell belonging to the SCG is the same TAG as the special cell.
  • the stag-ID does not have to be set by the upper layer in the serving cell belonging to the MCG. Further, the same stag-ID as that of the special cell is set by the upper layer in the serving cell belonging to the SCG.
  • a TAG may be set for each of MCG and SCG.
  • the base station apparatus 1 may be referred to as a transmission point (TP: “Transmission” Point). Further, in uplink transmission, the base station apparatus 1 may be referred to as a reception point (RP: “Reception” Point). Also, the downlink transmission point and the uplink reception point may 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 point
  • RP reception point
  • the downlink transmission point and the uplink reception point may 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.
  • the base station apparatus 1 capable of configuring a small cell may perform intermittent reception (DRX: “Discrete Reception”) or intermittent transmission (DTX: “Discrete Transmission”) as necessary.
  • the base station apparatus 1 which can comprise a small cell may perform ON / OFF of the power supply of one part apparatus (for example, transmission part and a receiving part) intermittently or semi-statically.
  • An independent identifier may be set for the base station device 1 constituting the macro cell and the base station device 1 constituting the small cell. That is, the identifier of the macro cell and the small cell may be set independently.
  • a cell-specific reference signal CRS: “Cell specific Reference Signal”
  • CRS Cell specific Reference Signal
  • the cell-specific reference signal for the macro cell may be scrambled with a physical layer cell ID (PCI: Physical layer Cell Identity), and the cell-specific reference signal for the small cell may be scrambled with a virtual cell ID (VCI: Virtual Cell Identity).
  • the macro cell may be scrambled with a physical layer cell ID (PCI: Physical layer Cell Identity), and the small cell may be scrambled with a global cell ID (GCI: Global Cell Identity).
  • PCI Physical layer Cell Identity
  • GCI Global Cell Identity
  • the macro cell may be scrambled with the first physical layer cell ID, and the small cell may be scrambled with the second physical layer cell ID.
  • the macro cell may be scrambled with the first virtual cell ID, and the small cell may be scrambled with the second virtual cell ID.
  • the virtual cell ID may be an ID set in the physical channel / physical signal.
  • the virtual cell ID may be an ID set independently of the physical layer cell ID.
  • the virtual cell ID may be an ID used for scrambling a sequence used for a physical channel / physical signal.
  • 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 cell corresponding to a serving cell or a small cell set as a small cell or a small cell.
  • the base station device 1 configuring the small cell transmits a signal (for example, a discovery signal or a discovery reference signal) for detecting / measuring the small cell, and is transmitted to the terminal device 2 from a nearby small cell. May be detected.
  • the terminal device 2 may notify the terminal device 2 of setting information regarding an appropriate small cell based on the detection result, and may establish a connection between the terminal device 2 and the small cell.
  • the terminal device 2 may perform discovery signal reception power measurement (RSRPmentmeasurement) and reception quality measurement (RSRQ measurement). Further, the terminal device 2 may perform time / frequency synchronization using a discovery signal.
  • RSRPmentmeasurement discovery signal reception power measurement
  • RSSQ measurement reception quality measurement
  • the base station apparatus 1 may notify the terminal apparatus 2 of information regarding the setting of the small cell and / or information regarding the setting of the discovery signal using higher layer signaling or L1 / L2 signaling. Good.
  • the base station apparatus 1 transmits, to the terminal apparatus 2, information related to the setting of pseudo-colocation (QCL: Quasi Co-Location) between the discovery signal and other existing signals, to upper layer signaling and L1 / L2 signaling. May be used for notification.
  • QCL Quasi Co-Location
  • L1 / L2 signaling May be used for notification.
  • a set of parameters related to the setting of pseudo collocation (information on setting of plural sets and a plurality of pseudo collocations) is set (notified) using higher layer signaling in advance, and L1 / L2 signaling is performed. May be used to specify one of a plurality of sets.
  • the terminal device 2 that performs cell aggregation is applied with different frame structure types (FDD (type 1) and TDD (type 2)) in the primary cell and at least one secondary cell. If the terminal device 2 does not have a function (performance and capability) for simultaneous transmission / reception between the bands supported by the primary cell and the secondary cell, the primary cell and the secondary cell do not perform transmission / reception simultaneously.
  • FDD type 1
  • TDD type 2
  • Physical resource block number n PRB used for the PUCCH transmission in slot n s is given by Equation (1).
  • the physical resource block number may be referred to as a physical resource block index.
  • variable m depends on the PUCCH format. For PUCCH formats 1, 1a, 1b, it is given by equation (2).
  • PUCCH format 3 is given by Equation (4).
  • N UL RB is an uplink bandwidth (ul-bandwidth, ULBW: Uplink Bandwidth) represented by a resource block.
  • the variable N (2) RB is a bandwidth represented by resource blocks used by transmission of PUCCH format 2 / 2a / 2b in each slot.
  • Variable N (1) CS is the cyclic used for PUCCH format 1 / 1a / 1b in the resource block used for the mix of PUCCH format 1 / 1a / 1b and PUCCH format 2 / 2a / 2b The number of shifts.
  • N (1) The value of CS is an integer multiple of ⁇ PUCCH shift set in the range of ⁇ 0, 1,..., 7 ⁇ .
  • N (2) RB , N (1) CS , and ⁇ PUCCH shift are given by higher layers (or higher layer signaling), respectively.
  • N (2) RB ⁇ 0 is satisfied.
  • the terminal device 2 may consider that there is no resource block in which the PUCCH format 1 / 1a / 1b and the PUCCH format 2 / 2a / 2b are mixed.
  • At most one resource block in each slot supports a mix of PUCCH format 1 / 1a / 1b and PUCCH format 2 / 2a / 2b.
  • Resources used for transmission of PUCCH format 1 / 1a / 1b, PUCCH format 2 / 2a / 2b, and PUCCH format 3 are non-negative indexes n (1, -p) PUCCH and n (2, -p) PUCCH, respectively. , N (3, p) PUCCH . Note that the index n (2, p) PUCCH of the PUCCH format 2 / 2a / 2b satisfies Expression (5).
  • the uplink bandwidth may be set based on the system bandwidth. Further, the uplink bandwidth may be set based on a channel bandwidth (Channel bandwidth). Further, the uplink bandwidth may be set based on transmission bandwidth setting (Transmission bandwidth configuration). The system bandwidth, channel bandwidth, and transmission bandwidth setting may be individually set for the uplink and the downlink. The system bandwidth, the channel bandwidth, and the transmission bandwidth are set for either the uplink or the downlink, and may be the same (common) for the uplink and the downlink. Also, the uplink bandwidth may be set (notified) using higher layer signaling. The uplink bandwidth may be set (notified) using a system information block. Further, the uplink bandwidth may be set (notified) using a master information block. Further, the uplink bandwidth may be set (notified) using broadcast information. Further, the uplink bandwidth may be set (notified) using multicast information. The uplink bandwidth may be set (notified) using unicast information.
  • FIG. 10 is an example of mapping of physical resource blocks (modulation symbols) to PUCCH. Physical resource mapping in each PUCCH format is performed using Equation (1) to Equation (5). Moreover, the physical resource for PUCCH performs inter-slot hopping.
  • a shortened PUCCH format (Shortened PUCCH) that frees the last SC-FDMA symbol in the second slot of a subframe. format) is used.
  • a guard band is set in a pseudo (virtual) manner for the uplink component carrier.
  • resource block offsets (N RB_offset_low , N RB_offset_high ) are provided for n PRBs of Equation (1), and physical resource mapping for PUCCH is performed using uplink component carriers (system bandwidth, channel bandwidth). Width, transmission bandwidth setting, transmission bandwidth).
  • N RB_offset_low and N RB_offset_high are integers (0, 1, 2,8) Greater than or equal to 0, and are represented by the number of resource blocks.
  • Formula (6) is an example when the first method is applied to Formula (1).
  • Resource block offset of the lower end of the physical resources N RB_offset_low the upper end of the resource block offset N RB_offset_high are respectively set for the PUCCH.
  • Each offset may be set from the base station apparatus 1 to the terminal apparatus 2 using higher layer signaling (RRC signaling, dedicated signaling).
  • RRC signaling dedicated signaling
  • Each offset may be set from the base station apparatus 1 to the terminal apparatus 2 using a system information block.
  • Each offset may be set from the base station apparatus 1 to the terminal apparatus 2 using L1 / L2 signaling (PDCCH, DL-SCH, MAC CE, etc.).
  • Only one of N RB_offset_low and N RB_offset_high may be set. That is, when the terminal device 2 is not set, the terminal device 2 may regard the value of the parameter that is not set as 0.
  • the communication carrier at both ends of the component carrier Interference can be reduced.
  • the terminal device 2 may limit physical resource mapping to the PUCCH by applying the first method, and reduce interference with adjacent channels.
  • Formula (7) is an example when the second method is applied to Formula (1).
  • the terminal apparatus 2 may limit the mapping of PUCCH physical resources by applying the second method to Equation (1) to reduce interference with adjacent channels.
  • a resource block start index n RB_start and a pseudo bandwidth N UL QRB (QRB: Quasi Resource Block, QBW: Quasi Bandwidth) represented by the number of resource blocks are used.
  • the start index and pseudo bandwidth may be set using higher layer signaling (RRC signaling, dedicated signaling).
  • RRC signaling dedicated signaling
  • the start index and the pseudo bandwidth may be set using the system information block.
  • the start index and the pseudo bandwidth may be set using L1 / L2 signaling (PDCCH, DL-SCH, MAC CE, etc.).
  • the pseudo bandwidth narrower than the uplink bandwidth, it is possible to reduce interference with adjacent channels at the upper end of the component carrier. Further, by using the start index, it is possible to reduce interference with the adjacent channel at the lower end of the component carrier.
  • the start index and the pseudo bandwidth are integers of 0 or more (0, 1, 2,%), Respectively. Also, only one of the start index and the pseudo bandwidth may be set.
  • the terminal device 2 may limit physical resource mapping to the PUCCH by applying the third method to Equation (1) to reduce interference with adjacent channels.
  • Formula (8) is an example when the third method is applied to Formula (1).
  • m 1 and m 2 are offsets with respect to m, and are integers of 0 or more.
  • m 1 and m 2 may be configured using higher layer signaling (RRC signaling, dedicated signaling). Further, m 1 and m 2 may be set using a system information block. Also, m 1 and m 2 may be set using L1 / L2 signaling (PDCCH, DL-SCH, MAC CE, etc.). Also, m 1 and m 2 are, if not necessary, may not be set. That is, only necessary ones may be set for m 1 and m 2 . Note that the values set in m 1 and m 2 are an example, and when a negative integer can be set, the code (addition / subtraction code) shown in Equation (8) may be changed.
  • the terminal device 2 may limit physical resource mapping to the PUCCH by applying the fourth method to Equation (1), and reduce interference to adjacent channels (interference from adjacent channels). .
  • Formula (9) is an example when the fourth method is applied to Formula (1).
  • n PRB_offset (0) and n PRB_offset (1) are offsets with respect to physical resource block (PRB) numbers, and are integers (0, 1, 2,...) greater than or equal to zero. Note that the value set in n PRB_offset (0) and / or n PRB_offset (1) is an example, and when a negative integer can be set, the code (addition / subtraction code) shown in Expression (9) is also used. It may change.
  • the terminal device 2 may restrict physical resource mapping to the PUCCH using any one of the first method to the fourth method by satisfying certain conditions.
  • the terminal device 2 may perform physical resource mapping for the PUCCH by replacing Formula (1) with any of Formula (6) to Formula (9) by satisfying certain conditions.
  • the first method to the fourth method may be referred to as the first method to the fourth method or the first means to the fourth means.
  • any of the settings of the first method to the fourth method and / or information on parameters is not set, physical resource mapping for the PUCCH without using any of the first method to the fourth method May be performed.
  • the setting and / or parameter information is not set includes that the setting and / or parameter is not set.
  • the fact that information regarding settings and / or parameters is not set includes that values are not set for the settings and / or parameters.
  • the terminal device 2 Based on Equation (1), physical resource mapping for PUCCH is performed.
  • the base station apparatus 1 does not set the first parameter and / or the second parameter, the base station apparatus 1 performs a reception process for the PUCCH based on Expression (1).
  • the terminal device 2 uses the formula (1) Based on the first parameter and / or the second parameter, physical resource mapping for the PUCCH is performed. Further, when the base station apparatus 1 also sets the first parameter and / or the second parameter, the base station apparatus 1 performs reception processing for the PUCCH based on the formula (1) and the first parameter and / or the second parameter. Do.
  • the terminal apparatus 2 supporting eIMTA When the terminal apparatus 2 supporting eIMTA performs PUCCH transmission in a subframe belonging to the first subframe set, the terminal apparatus 2 performs physical resource mapping for the PUCCH using Equation (1), and performs the second subframe.
  • physical resource mapping for PUCCH may be performed using any one of Equation (6) to Equation (9).
  • the first subframe set is composed of subframes in which uplink subframes and downlink subframes are not mixed between TDD UL / DL settings
  • the second subframe set is TDD UL / DL settings.
  • uplink subframes and downlink subframes may be mixed. That is, in the first subframe set, there is no uplink and downlink interference between the TDD UL / DL settings, but in the second subframe set, the uplink and downlink are between the TDD UL / DL settings. Interference occurs.
  • the terminal device 2 that supports eIMTA may perform physical resource mapping on the PUCCH using any one of Equation (6) to Equation (9) when information and parameters related to eIMTA are set. Good.
  • the terminal device 2 that supports eIMTA performs physical resource mapping for the PUCCH using Equation (1) when information and parameters related to eIMTA are not set.
  • the PUCCH transmission in the secondary cell is performed using any one of Equation (6) to Equation (9). Physical resource mapping for may be performed.
  • the terminal device 2 that supports PUCCH transmission in the secondary cell performs physical resource mapping on the PUCCH using Equation (1) when PUCCH transmission in the secondary cell is not permitted.
  • the terminal device 2 that supports PUCCH transmission in the secondary cell when the information regarding the setting and / or parameter of any of the first method to the fourth method is not set, Equation (1) Is used to perform physical resource mapping for PUCCH.
  • the terminal device 2 supporting communication using a plurality of cell groups when PUCCH transmission in a special cell (a cell corresponding to the primary cell of the secondary cell group) is permitted, from Equation (6) Physical resource mapping for the PUCCH in the secondary cell may be performed using any one of Equation (9).
  • the terminal device 2 that supports communication using a plurality of cell groups performs physical resource mapping for the PUCCH using Equation (1) when PUCCH transmission in the special secondary cell is not permitted. .
  • the terminal device 2 that supports communication using a plurality of cell groups when the information regarding the setting and / or parameter of any of the first to fourth methods is not set, Physical resource mapping for PUCCH is performed using (1).
  • the terminal apparatus 2 supporting TDD-FDD carrier aggregation performs PUCCH transmission using a TDD cell
  • the terminal apparatus 2 uses any one of Expressions (6) to (9) to use the PUCCH in the secondary cell. Physical resource mapping for may be performed.
  • the first method to the fourth method may be applied to a serving cell capable of PUCCH transmission.
  • a serving cell to which any of the first method to the fourth method can be applied may be set using higher layer signaling.
  • a serving cell to which any one of the first method to the fourth method can be applied may be set using L1 / L2 signaling.
  • the terminal device 2 has, in addition to the standard guard band, the uplink, A pseudo guard band (virtual guard band, quasi-guard band) may be set.
  • a pseudo guard band virtual guard band, quasi-guard band
  • resource allocation for PRACH (random access preamble)
  • PRACH random access preamble
  • resource allocation for PRACH (random access preamble)
  • the transmission of the random access preamble is limited to certain time frequency resources (certain time and frequency resources). Note that these resources may be physical resources.
  • Resources used for transmission of the random access preamble are a frequency region such as a subframe number included in a radio frame, a resource block having the lowest (lower end) number included in the radio frame, and an index 0 corresponding to the subframe. Are arranged in order of increasing (increasing order) from the physical resource block.
  • the PRACH resource of the radio frame is indicated by a PRACH resource index.
  • the PRACH resource index is referred to as a PRACH configuration index (prach-ConfigurationIndex).
  • the PRACH configuration index is set from the base station device 1 to the terminal device 2 based on FIG. 11 and / or FIG. That is, the PRACH configuration index is given to the terminal device 2 by the upper layer.
  • FIG. 11 shows an example of random access settings for preamble formats 0 to 3 in frame structure type 1.
  • the PRACH configuration index is associated with the preamble format, the system frame number, and the subframe number.
  • the first physical resource block n RA PRB arranged at the transmission opportunity of the PRACH considered for the preamble formats 0, 1, 2, 3 is defined as Expression (10).
  • the PRACH frequency offset (parameter prach-FrequencyOffset) n RA PRBoffset is expressed as a physical resource block number set by an upper layer and satisfies Expression (11).
  • FIG. 12 is an example of random access settings for preamble formats 0 to 4 in frame structure type 2.
  • a plurality of random access resources can be arranged in one uplink subframe (or UpPTS for preamble format 4) depending on the TDD UL / DL configuration.
  • the PRACH configuration index is associated with the preamble format, the PRACH density D RA and the version index r RA every 10 ms.
  • the PRACH configuration index is given by the upper layer.
  • the terminal device 2 intended for handover has a time difference between the radio frame i of the latest cell and the target cell greater than 153600 ⁇ T s. Assume it is small.
  • FIG. 13 is an example of physical resource mapping for different random access opportunities (PRACH transmission opportunities) required for a specific PRACH density D RA in frame structure type 2.
  • PRACH transmission opportunities PRACH transmission opportunities
  • the PRACH configuration index, the TDD UL / DL setting, and (f RA , t (0) RA , t (1) RA , t (2) RA ) are associated with each other.
  • f RA is a PRACH resource frequency index set in consideration time domain positions.
  • t (0) RA is the radio frame indication index of the PRACH opportunity.
  • RA is the half frame index of the PRACH opportunity in the radio frame.
  • t (2) RA is the uplink subframe number for the start of the PRACH opportunity in the half frame.
  • a location where t (2) RA indicates (*) indicates an exception of preamble format 4.
  • Random access to each PRACH Configuration is only possible when time multiplexing is not required in time to enable all opportunities of PRACH configuration required for a particular density value D RA not overlapping. Random access opportunities are first placed in time (time direction, time domain) and then placed in frequency (frequency direction, frequency domain).
  • frequency multiplexing is set based on Equation (12).
  • N UL RB is the number of uplink resource blocks.
  • n RA PRB is a first physical resource block arranged for a PRACH opportunity.
  • the PRACH frequency offset (prach-FrequencyOffset) n RA PRBoffset is a parameter set by an upper layer and is a first physical resource block effective for the PRACH represented as a physical resource block number.
  • N RA PRBoffset satisfies Equation (11).
  • n RA PRBoffset may be set in consideration of physical resource mapping for PUCCH.
  • Equation (13) For preamble format 4, frequency multiplexing is performed based on Equation (13).
  • n f is a system frame number.
  • N SP is the number of switch points from the downlink to the uplink set in the radio frame.
  • Each random access preamble uses a bandwidth equivalent to 6 consecutive resource blocks for both frame structures.
  • the physical resource mapping of PRACH (Random Access Preamble) for the frame structure type 2 is easy to be mapped to both ends of the component carrier, similar to PUCCH.
  • the PRACH resource arrangement may differ depending on the transmission timing.
  • the component carrier of the adjacent frequency is a downlink, it is easy to receive the interference.
  • the PRACH transmission accuracy deteriorates, the initial access and the like are affected, and the communication efficiency also deteriorates.
  • the component carrier of the adjacent frequency is the downlink, that is, the adjacent channel is the downlink, in order to avoid the interference, it is necessary to limit the PRACH resource allocation method.
  • Equation (14) resource block offsets (n RA PRBoffset_low and n RA PRBoffset_high ) may be set for the resource blocks at the lower end and the upper end.
  • Equation (16) and / or Equation (17) When the second method is applied to Equation (12) and / or Equation (13), it may be defined as Equation (16) and / or Equation (17).
  • the physical resource block mapping for PRACH transmission (PRACH opportunity) is limited by replacing the lower end with PRB_start and replacing the upper end with a pseudo bandwidth for the upper end.
  • N UL QRB ⁇ N UL RB .
  • the pseudo bandwidth is equal to or less than the uplink bandwidth.
  • each parameter used for the first method to the third method applied to physical resource mapping for PRACH transmission may be set separately from the PUCCH. That is, each parameter applied to PRACH may be set using higher layer signaling separately from PUCCH. Further, each parameter applied to the PRACH may be set using L1 / L2 signaling separately from the PUCCH.
  • each parameter used in the first to third methods applied to physical resource mapping for PRACH transmission may be shared with the PUCCH. That is, each parameter applied to PRACH may be set to the same value as each parameter applied to PUCCH. Moreover, each parameter applied to PRACH and each parameter applied to PUCCH may be common.
  • Parameters that are used to limit physical resource mapping may be set for each physical channel.
  • parameters used to limit physical resource mapping may be set in common between physical channels.
  • the first method and the second method are used for physical resource mapping for PRACH transmission.
  • the method may be applied.
  • parameters (resource block offsets) used for the first method and the second method are set in the information related to PRACH configuration
  • the first method and the physical resource mapping for PUCCH transmission The second method may be applied.
  • parameters (resource block offsets) used for the first method and the second method are set in the information related to PUCCH configuration
  • the first method and the physical resource mapping for PRACH transmission may be applied.
  • the terminal device 2 supporting eIMTA uses any one of the formulas (14) and (A6) to formulas (18) and (A10) when information and parameters related to eIMTA are set.
  • Physical resource mapping for PRACH transmission may be performed.
  • the terminal device 2 that supports eIMTA performs physical resource mapping for PRACH transmission using Equation (12) and Equation (13) when information and parameters related to eIMTA are not set.
  • the terminal device 2 that supports PRACH transmission in the secondary cell when the PRACH transmission in the secondary cell is permitted, the mathematical expression (14) and the mathematical expression (15) to the mathematical expression ( Physical resource mapping for the PRACH in the secondary cell may be performed using any one of 18) and Equation (19).
  • the terminal device 2 that supports the PRACH transmission in the secondary cell performs physical resource mapping for the PRACH using Equation (12) and Equation (13).
  • the terminal device 2 that supports PRACH transmission in the secondary cell when the information on the setting and / or parameter of any one of the first method to the fourth method is not set, Equation (12) And physical resource mapping for the PRACH is performed using Equation (13).
  • Physical resource mapping for the PRACH in the secondary cell may be performed using any one of the formulas (14) and (15) to the formulas (18) and (19).
  • the terminal device 2 uses the formula (12) and the formula (13) for the PRACH. Perform physical resource mapping.
  • the terminal device 2 that supports communication using a plurality of cell groups when the information regarding the setting and / or parameter of any of the first to fourth methods is not set, Physical resource mapping for PRACH is performed using (12) and Equation (13).
  • the terminal apparatus 2 supporting TDD-FDD carrier aggregation performs PRACH transmission using a TDD cell
  • the terminal apparatus 2 of Expression (14) and Expression (15) to Expression (18) and Expression (19) Physical resource mapping for the PRACH in the secondary cell may be performed using any set.
  • the first to fourth methods may be applied to a serving cell capable of PRACH transmission.
  • a serving cell to which any of the first method to the fourth method can be applied may be set using higher layer signaling.
  • a serving cell to which any one of the first method to the fourth method can be applied may be set using L1 / L2 signaling.
  • FIG. 4 is a flowchart showing the procedure of the process 1 of the terminal device 2 according to the embodiment of the present invention.
  • the terminal device 2 determines whether or not a plurality of cells having different frame structure types are aggregated (step S401).
  • the terminal device 2 determines whether or not a plurality of cells having different frame structure types have a function of performing transmission / reception simultaneously ( Step S402).
  • the terminal device 2 When the terminal device 2 has a function of simultaneously transmitting / receiving in a plurality of cells of different frame structure types (S402: YES), the terminal device 2 transmits / receives simultaneously in a plurality of cells of different frame structure types in the same subframe (Step S403).
  • a plurality of cells having different frame structure types are not aggregated (S401: NO), that is, when a plurality of cells having the same frame structure type are aggregated, the process proceeds to processing 3.
  • a plurality of cells having different frame structure types do not have a function of simultaneously transmitting and receiving (S402: NO)
  • the process proceeds to process 2.
  • the terminal device 2 When a plurality of cells to which different frame structure types are applied are aggregated and there is no function (performance or capability) for simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, the terminal device 2 is a sub-cell of the primary cell. Depending on the type of frame, it is determined whether transmission / reception is performed simultaneously in the secondary cell of the same subframe.
  • the subframe of the primary cell may be a downlink subframe.
  • the terminal device 2 does not transmit an uplink signal (any channel or any signal including an uplink signal) in the secondary cell of the same subframe.
  • the base station apparatus 1 does not expect an uplink signal to be transmitted from the terminal apparatus 2 in the subframe. That is, the base station apparatus 1 does not have to receive an uplink signal transmitted from the terminal apparatus 2 in the subframe.
  • uplink transmission is required for the subframe of the primary cell. If it is an uplink subframe (a valid uplink subframe), the terminal apparatus 2 does not expect that a downlink signal can be received in the secondary cell of the same subframe. That is, in this case, the terminal apparatus 2 does not expect that a downlink signal is transmitted from the base station apparatus 1 (there is downlink transmission). Therefore, in this case, the terminal device 2 may not receive the downlink signal in the secondary cell. In this case, the base station apparatus 1 does not have to transmit a downlink signal to the terminal apparatus 2 in the secondary cell.
  • uplink transmission is required for the subframe of the primary cell. If it is not an uplink subframe (invalid uplink subframe), the terminal apparatus 2 may receive a downlink signal in the secondary cell of the same subframe. In this case, the base station apparatus 1 may transmit a downlink signal to the terminal apparatus 2 in the secondary cell.
  • the terminal apparatus 2 when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal apparatus 2, cross-carrier scheduling in the primary cell (or secondary cell) is performed. If uplink transmission is requested for a subframe with a secondary cell, the terminal apparatus 2 does not expect that a downlink signal can be received in the primary cell of the same subframe. That is, in this case, the terminal device 2 does not expect a downlink signal to be transmitted from the base station device 1. Therefore, in this case, the terminal device 2 may not receive the downlink signal.
  • the terminal device 2 when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, multi-subframe scheduling in the primary cell (secondary cell) or If uplink transmission is requested for a subframe with a secondary cell by cross subframe scheduling, the terminal device 2 does not expect that a downlink signal can be received in the primary cell of the same subframe. That is, in this case, the terminal device 2 does not expect a downlink signal to be transmitted from the base station device 1. Therefore, in this case, the terminal device 2 may not receive the downlink signal. In this case, the base station apparatus 1 does not have to transmit a downlink signal to the terminal apparatus 2 in the secondary cell.
  • the terminal device 2 when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, multi-subframe scheduling in the primary cell (or secondary cell) Or if downlink transmission is shown with respect to the sub-frame of a secondary cell by cross sub-frame scheduling, the terminal device 2 will not expect that an uplink signal can be transmitted in the primary cell of the same sub-frame. That is, in this case, the terminal device 2 does not expect that uplink transmission is requested in the subframe. Therefore, in this case, the terminal device 2 does not need to transmit an uplink signal. For example, transmission of P-SRS may be dropped even if it is the same subframe as the transmission subframe of P-SRS.
  • the terminal device 2 does not expect that PDSCH / EPDCCH / PMCH / PRS can be received in the secondary cell of the same subframe. In this case, the terminal device 2 may not transmit the PUSCH / PUCCH / PRACH formats 1 to 3. In this case, the base station apparatus 1 does not expect the PUSCH / PUCCH / PRACH formats 1 to 3 to be transmitted from the terminal apparatus 2.
  • the terminal device 2 when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of simultaneously transmitting and receiving between the plurality of cells aggregated in the terminal device 2, the downlink of the special subframe of the primary cell and the secondary cell If the subframes are the same subframe, the terminal device 2 does not expect that a downlink signal can be received in the OFDM symbol of the secondary cell that overlaps the guard period and the UpPTS in the subframe of the primary cell. In this case, the terminal device 2 may not receive the downlink signal. In this case, the terminal apparatus 2 may receive a downlink signal (for example, PDCCH) in the OFDM symbol of the secondary cell that does not overlap the guard period and the UpPTS in the subframe of the primary cell. In this case, the base station apparatus 1 may transmit the downlink signal in the OFDM symbol of the secondary cell that does not overlap the guard period and the UpPTS in the subframe of the primary cell.
  • a downlink signal for example, PDCCH
  • the terminal apparatus 2 when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal apparatus 2, the uplink of the special subframe of the primary cell and the secondary cell If the subframe is the same subframe, the terminal apparatus 2 is expected to be able to transmit an uplink signal in the SC-FDMA symbol (OFDM symbol) of the secondary cell that overlaps the guard period and DwPTS in the subframe of the primary cell. do not do. In this case, the terminal device 2 may not transmit an uplink signal.
  • SC-FDMA symbol OFDM symbol
  • the terminal apparatus 2 uses the uplink signal (for example, SRS or PRACH format 4 that can be arranged in the UpPTS in the SC-FDMA symbol of the secondary cell that does not overlap with the guard period in the subframe of the primary cell and DwPTS. ) May be sent. Also, in this case, the base station apparatus 1 receives an uplink signal using the SC-FDMA symbol of the secondary cell that does not overlap with the guard period in the subframe of the primary cell and DwPTS.
  • the uplink signal for example, SRS or PRACH format 4 that can be arranged in the UpPTS in the SC-FDMA symbol of the secondary cell that does not overlap with the guard period in the subframe of the primary cell and DwPTS.
  • the terminal device 2 when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, a subframe in which a certain cell is present among the plurality of cells.
  • the terminal device 2 when uplink transmission is requested, even if another cell is a downlink subframe, it is not expected that a downlink signal can be received in the downlink subframe.
  • the terminal device 2 does not expect a downlink signal to be transmitted from the base station device 1 in the same subframe of another cell. That is, in this case, the terminal device 2 does not expect a downlink signal to be transmitted from the base station device 1. Therefore, in this case, the terminal device 2 may not receive the downlink signal.
  • the base station apparatus 1 does not have to transmit a downlink signal to the terminal apparatus 2.
  • the primary cell If uplink transmission is requested for the subframe, the terminal apparatus 2 does not simultaneously transmit an uplink signal and receive a downlink signal in the secondary cell of the same subframe.
  • uplink transmission is requested for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling)
  • an uplink signal is transmitted in the primary cell of the same subframe. Transmission and downlink signal reception may not be performed. In this case, in the primary cell of the same subframe, the base station apparatus 1 does not need to receive the uplink signal and transmit the downlink signal.
  • the primary cell If uplink transmission is requested for a certain subframe, it is not expected that a downlink signal can be received in the secondary cell of the same subframe. Also, if uplink transmission is requested for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), the downlink signal is transmitted in the primary cell of the same subframe. Do not expect to receive. That is, in this case, the terminal device 2 does not expect a downlink signal to be transmitted from the base station device 1. Therefore, in this case, the terminal device 2 may not receive the downlink signal.
  • the subframe of the primary cell is a downlink. If it is a subframe, the terminal device 2 does not transmit an uplink signal in the secondary cell of the same subframe. In this case, the base station apparatus 1 does not expect an uplink signal to be transmitted from the terminal apparatus 2 in the secondary cell of the same subframe.
  • the subframe of the primary cell is a special sub If it is a frame, the terminal device 2 does not expect that PDSCH / EPDCCH / PMCH / PRS can be received in the secondary cell of the same subframe. In this case, the terminal device 2 does not need to receive PDSCH / EPDCCH / PMCH / PRS. In this case, the terminal device 2 may not transmit the PUSCH / PUCCH / PRACH formats 1 to 3.
  • the subframe of the primary cell is the uplink. If it is a subframe, the terminal device 2 does not expect that a downlink signal can be received in the secondary cell of the same subframe. That is, in this case, the terminal device 2 does not have to receive a downlink signal.
  • the terminal apparatus 2 transmits an uplink signal in the SC-FDMA symbol (OFDM symbol) of the secondary cell that overlaps the guard period and DwPTS in the subframe of the primary cell. Do not expect to be able to send. In this case, the terminal device 2 may not transmit an uplink signal.
  • SC-FDMA symbol OFDM symbol
  • an uplink signal (for example, SRS or PRACH format 4 that can be arranged in UpPTS) is transmitted in the SC-FDMA symbol of the secondary cell that does not overlap with the guard period in the subframe of the primary cell and DwPTS. Also good.
  • the terminal apparatus 2 does not transmit an uplink signal in the secondary cell of the same subframe.
  • the terminal device 2 when a plurality of cells to which different frame structure types are applied are aggregated, and there is no function of performing simultaneous transmission / reception in the uplink of the secondary cell among the plurality of cells aggregated in the terminal device 2, the sub cell of the primary cell If the frame is a special subframe, the terminal device 2 does not expect that PDSCH / EPDCCH / PMCH / PRS can be received in the secondary cell of the same subframe. In this case, the terminal device 2 does not need to receive PDSCH / EPDCCH / PMCH / PRS. In this case, the terminal device 2 may not transmit the PUSCH / PUCCH / PRACH formats 1 to 3.
  • the terminal apparatus 2 when a plurality of cells to which different frame structure types are applied are aggregated, and there is no function of simultaneously transmitting and receiving in the downlink of the secondary cell among the plurality of cells aggregated in the terminal device 2, the sub cell of the primary cell If the frame is an uplink subframe, the terminal apparatus 2 does not expect that a downlink signal can be received in the secondary cell of the same subframe. That is, in this case, the terminal device 2 does not have to receive a downlink signal.
  • the terminal apparatus 2 uses the guard period in the subframe of the primary cell and the SC-FDMA symbol (OFDM symbol) of the secondary cell that overlaps DwPTS. Do not expect to be able to transmit uplink signals. In this case, the terminal device 2 may not transmit an uplink signal.
  • an uplink signal (for example, SRS or PRACH format 4 that can be arranged in UpPTS) is transmitted in the SC-FDMA symbol of the secondary cell that does not overlap with the guard period in the subframe of the primary cell and DwPTS. Also good.
  • a plurality of cells to which different frame structure types are aggregated means, for example, that a cell whose frame structure type is Type 1 (FDD) and a cell whose frame structure type is Type 2 (TDD) are aggregated. Including doing.
  • a plurality of cells to which different frame structure types are applied are, for example, a plurality of cells having a frame structure type of type 1 (FDD) and a plurality of cells having a frame structure type of type 2 (TDD).
  • Includes aggregating cells. That is, a plurality of cells to which different frame structure types are applied means that, for example, one or more cells whose frame structure type is Type 1 (FDD) and the frame structure type is Type 2 (TDD). Aggregating one or more cells.
  • the frame structure type is an example, and the same applies when type 3 or type 4 is defined.
  • the terminal device 2 has a frame structure type for the primary cell of FDD, a frame structure type for at least one secondary cell of the secondary cells is TDD, and a plurality of different frame structure types aggregated in the terminal device 2. When there is no function of performing simultaneous transmission / reception between cells, the terminal device 2 does not transmit an uplink signal in an uplink subframe in a secondary cell in which TDD is set.
  • the terminal device 2 has a frame structure type for the primary cell of FDD, a frame structure type for at least one secondary cell of the secondary cells is TDD, and a plurality of different frame structure types aggregated in the terminal device 2. If there is no function for simultaneous transmission / reception between cells, if uplink transmission is requested for a subframe in which a primary cell exists, the terminal apparatus 2 receives a downlink signal in the secondary cell of the same subframe. You don't have to. In other words, if uplink transmission is requested for a subframe in which a primary cell exists, the terminal apparatus 2 transmits a downlink signal from the base station apparatus 1 in the secondary cell of the same subframe. Do not expect.
  • the terminal device 2 has a frame structure type for the primary cell of FDD, a frame structure type for at least one secondary cell of the secondary cells is TDD, and a plurality of different frame structure types aggregated in the terminal device 2. If there is no function for simultaneous transmission / reception between cells, if half duplex is supported for the FDD band of the primary cell, the terminal device 2 always transmits a downlink subframe, PDCCH, or CRS in the primary cell. Since the monitoring is not performed, when the primary cell is switched from the downlink subframe to the uplink subframe, the uplink signal may be transmitted in the secondary cell of the same subframe.
  • the terminal apparatus 2 does not expect that a downlink signal can be received in the secondary cell in the same subframe as the subframe for which uplink transmission is requested in the primary cell.
  • the downlink signal may be received in the secondary cell of the same subframe as the subframe for which transmission is not requested.
  • the terminal device 2 has a function of simultaneously transmitting and receiving between a plurality of cells of different frame structure types aggregated in the terminal device 2 in which the primary cell is FDD and at least one of the secondary cells is TDD. If there is no uplink transmission for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), there is no downlink in the primary cell of the same subframe. The link signal may not be received. In other words, when uplink transmission is requested for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), the terminal apparatus 2 uses the primary cell of the same subframe. Therefore, it is not expected that a downlink signal is transmitted from the base station apparatus 1.
  • the terminal device 2 when downlink transmission is indicated for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), the terminal device 2 can be used in the primary cell of the same subframe.
  • the uplink signal may not be transmitted.
  • the terminal device 2 has a function of simultaneously transmitting and receiving between a plurality of cells of different frame structure types aggregated in the terminal device 2 in which the primary cell is TDD and at least one of the secondary cells is FDD. If there is no subframe, if the subframe of the primary cell is a downlink subframe, no uplink signal is transmitted in the same subframe of the secondary cell.
  • the terminal device 2 has a function of simultaneously transmitting and receiving between a plurality of cells of different frame structure types aggregated in the terminal device 2 in which the primary cell is TDD and at least one of the secondary cells is FDD. If there is not, if an uplink signal is scheduled in a subframe with a primary cell, it is not expected that a downlink signal is transmitted from the base station apparatus 1 in the same subframe of the secondary cell. The terminal device 2 may receive the downlink signal in the secondary cell of the same subframe if uplink transmission is not requested in the subframe of the primary cell.
  • the terminal device 2 has a function of simultaneously transmitting and receiving between a plurality of cells of different frame structure types aggregated in the terminal device 2 in which the primary cell is TDD and at least one of the secondary cells is FDD. If there is no uplink transmission for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), the base station in the primary cell of the same subframe It is not expected that a downlink signal is transmitted from the station apparatus 1. In addition, if downlink transmission is indicated for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), the terminal apparatus 2 in the same subframe of the primary cell Does not have to transmit an uplink signal.
  • the terminal device 2 has a TDD UL / DL setting in which the primary cell is TDD and at least one of the secondary cells is different from the primary cell, and a plurality of different frame structure types aggregated in the terminal device 2. If there is no function for simultaneous transmission / reception between the cells, the terminal device 2 does not simultaneously transmit / receive in the primary cell and the secondary cell in the same subframe.
  • the TDD UL / DL setting to be compared between a plurality of cells may be an uplink reference TDD UL / DL setting. Further, the TDD UL / DL setting to be compared between a plurality of cells may be a downlink reference TDD UL / DL setting.
  • the TDD UL / DL setting to be compared between a plurality of cells may be the TDD UL / DL setting transmitted by SIB1.
  • the TDD UL / DL configuration to be compared between a plurality of cells may be a TDD UL / DL configuration transmitted by RRC signaling (may be a TDD UL / DL configuration signaled by RRC).
  • one of the TDD UL / DL settings to be compared between a plurality of cells may be transmitted by SIB1, and the other may be transmitted by RRC signaling.
  • transmission / reception may be performed simultaneously between cells.
  • transmission / reception may be performed at the same time depending on whether different TDD UL / DL settings are set between cells. You may decide whether it is good or not.
  • uplink transmission is required even if an uplink signal is scheduled by a grant for uplink transmission (dynamic scheduled grant, semi-persistent scheduling grant, random access response grant, uplink grant).
  • the request for uplink transmission may be a request for PUSCH or SRS by an SRS request or CSI request included in the DCI format.
  • the request for uplink transmission may mean that an uplink signal is scheduled according to a parameter set by an upper layer.
  • an uplink subframe for which uplink transmission is requested is referred to as a valid uplink subframe.
  • An uplink subframe for which uplink transmission is not requested is referred to as an invalid uplink subframe.
  • the effective downlink subframe may be a subframe to which PDSCH resources are allocated by the downlink grant.
  • the effective downlink subframe may be a downlink subframe in which a transmission interval or reception interval of downlink signals and a measurement interval are set by an upper layer.
  • a bitmap may be indicated by a CSI measurement subframe set.
  • the measurement subframe pattern may indicate the bit map.
  • the downlink subframe to be measured may be indicated by the period and the subframe offset. In the downlink subframe in which the measurement interval is not indicated by the upper layer, the terminal apparatus 2 may not expect that a downlink signal is transmitted as an invalid downlink subframe.
  • FIG. 5 is a flowchart showing the procedure of the process 3 of the terminal device 2 according to the embodiment of the present invention. It is determined whether or not the frame structure type of the aggregated cells is TDD (step S501). If the frame structure type of the aggregated plurality of cells is TDD (S501: YES), it is determined whether or not different TDD UL / DL settings are set among the plurality of cells (S502). When different TDD UL / DL settings are set among a plurality of cells (S502: YES), the process proceeds to process 4.
  • the terminal device 2 may respond to the type of subframe of the primary cell. In the secondary cell of the same subframe, it is determined whether transmission / reception is performed simultaneously.
  • the terminal apparatus 2 when a plurality of cells with different TDD UL / DL settings are aggregated and there is no function of simultaneously transmitting and receiving between the plurality of cells aggregated in the terminal apparatus 2, if the subframe of the primary cell is a downlink subframe, The terminal apparatus 2 does not transmit an uplink signal (which channel or signal including the uplink signal) in the secondary cell of the same subframe.
  • the terminal device 2 does not expect that a downlink signal can be received in the secondary cell of the same subframe. That is, in this case, the terminal device 2 does not expect a downlink signal to be transmitted from the base station device 1. Therefore, in this case, the terminal device 2 may not receive the downlink signal in the secondary cell.
  • the terminal device 2 when a plurality of cells with different TDD UL / DL settings are aggregated and there is no function of simultaneously transmitting and receiving between the plurality of cells aggregated in the terminal device 2, if the subframe of the primary cell is a special subframe, The terminal device 2 does not expect that PDSCH / EPDCCH / PMCH / PRS can be received in the secondary cell of the same subframe. In this case, the terminal device 2 may not transmit the PUSCH / PUCCH / PRACH formats 1 to 3.
  • the terminal device 2 does not expect that a downlink signal can be received in the OFDM symbol of the secondary cell that overlaps the guard period and the UpPTS in the subframe of the primary cell. In this case, the terminal device 2 may not receive the downlink signal.
  • a downlink signal (for example, PDCCH) may be received in the OFDM symbol of the secondary cell that does not overlap the guard period and the UpPTS in the subframe of the primary cell.
  • the terminal device 2 determines whether transmission / reception can be performed simultaneously between a plurality of cells.
  • uplink carrier aggregation and / or downlink carrier aggregation are possible in different FDD bands aggregated at the same time, transmission and reception can be performed simultaneously in a plurality of cells in the same subframe.
  • transmission / reception may not be performed simultaneously in a plurality of cells in the same subframe.
  • the terminal device 2 has two or more wireless transmission units and / or wireless reception units (wireless transmission / reception units, RF units), transmission / reception may be performed simultaneously between a plurality of cells.
  • the present embodiment may be applied to different bands (E-UTRA Operating Band, E-UTRA Band, Band).
  • TDD band a band in which the duplex mode is TDD
  • FDD band a band in which the duplex mode is FDD
  • FDD carrier a cell (carrier) whose frame structure type is TDD
  • TDD cell TDD carrier
  • the terminal device 2 may perform transmission / reception simultaneously in a plurality of cells in different bands in the same subframe.
  • transmission and reception may be performed simultaneously even if the TDD UL / DL settings of the plurality of cells (TDD cells) are different.
  • whether or not cell aggregation can be performed in a plurality of TDD cells may be determined depending on whether or not a function of simultaneously transmitting and receiving is provided.
  • the terminal device 2 may determine whether the subframe of the primary cell is a downlink subframe. For example, uplink signals (physical channels and physical signals) are not transmitted in the secondary cell in the same subframe.
  • the terminal device 2 uses the same subframe and the subframe of the primary cell is special. If the subframe of the secondary cell is a downlink subframe in a subframe, it is not expected that PDSCH / EPDCCH / PMCH / PRS can be received in the secondary cell.
  • the terminal device 2 uses the same subframe and the subframe of the primary cell is special. If the subframe of the secondary cell is a downlink subframe in the subframe, it is not expected that another signal (downlink signal) can be received by the OFDM symbol of the secondary cell overlapping the guard period of the primary cell and the UpPTS.
  • the terminal device 2 when a plurality of cells in different bands are aggregated and the terminal device 2 does not have a function of simultaneously transmitting and receiving between a plurality of cells in different bands, the terminal device 2 is required to perform uplink transmission of the subframe of the primary cell. If it is an uplink subframe, it is not expected that a downlink signal can be received in the same subframe of the secondary cell.
  • the terminal device 2 when a plurality of cells in different bands are aggregated and the terminal device 2 does not have a function of simultaneously transmitting and receiving between a plurality of cells in different bands, the terminal device 2 is required to perform uplink transmission of the subframe of the secondary cell. If it is an uplink subframe, it is not expected that a downlink signal can be received in the same subframe of the primary cell.
  • the terminal device 2 when a plurality of cells in different bands are aggregated and the terminal device 2 does not have a function of performing transmission / reception simultaneously between a plurality of cells in different bands, the terminal device 2 is present regardless of whether it is a primary cell or a secondary cell. If there is an uplink subframe for which uplink transmission is requested in a cell, it is not necessary to receive a downlink signal in the same subframe of another cell.
  • the terminal device 2 may be a terminal regardless of whether it is a primary cell or a secondary cell. If there is no uplink subframe for which uplink transmission is requested in a cell supported by the apparatus 2, a downlink signal may be received in the same subframe.
  • the terminal device 2 does not have a function of simultaneously transmitting / receiving between a plurality of cells in different bands, and does not have a function of performing uplink carrier aggregation between bands supported by the terminal device 2
  • the terminal apparatus 2 does not transmit an uplink signal and receive a downlink signal in a secondary cell in the same subframe.
  • uplink transmission is requested for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling)
  • an uplink signal is transmitted in the primary cell of the same subframe. Is not transmitted and downlink signals are not received.
  • the terminal device 2 does not have a function of simultaneously transmitting / receiving between a plurality of cells of different bands, and does not have a function of performing downlink carrier aggregation between bands supported by the terminal device 2
  • the terminal device 2 may not receive a downlink signal in a secondary cell in the same subframe.
  • the terminal apparatus 2 may use the primary cell of the same subframe. In this case, it is not necessary to receive the downlink signal.
  • the terminal device 2 does not expect that a downlink signal can be received. If downlink transmission is indicated for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), the terminal apparatus 2 may use the primary cell of the same subframe. In this case, the uplink signal need not be transmitted.
  • the terminal device 2 when a subframe for measuring CRS and CSI-RS for each of a plurality of cells and a subframe for monitoring PDCCH and EPDCCH are set by higher layer signaling, If uplink transmission to the first cell is not requested, the CRS or CSI-RS for the second cell may be measured to monitor the PDCCH or EPDCCH. In addition, when P-SRS transmission to the first cell occurs in the subframe, the P-SRS transmission may be dropped. In addition, if transmission of PUCCH with CSI for the first cell occurs in the subframe, priority is given to transmission of PUCCH with CSI, and CRS and CSI-RS for the second cell may not be measured. , PDCCH and EPDCCH may not be monitored.
  • the terminal device 2 uses the same subframe in the first cell when the subframe for measuring CRS and CSI-RS and the subframe for monitoring PDCCH and EPDCCH are not set by higher layer signaling.
  • the second cell is a downlink subframe, and when P-SRS transmission occurs in the uplink subframe of the first cell, the PDCCH cannot be detected in the second cell.
  • the P-SRS may be transmitted in the subframe.
  • the terminal device 2 uses the FDD band (FDD band cell). May support only half-duplex (full duplex may not be supported in the FDD band). In this case, whether or not half duplex is supported for the FDD band applied to at least one of the aggregated cells is transmitted / received simultaneously in the aggregated TDD band cell and the FDD band cell. It may be associated with whether the function of performing is supported.
  • the FDD band depends on whether half duplex is supported in the FDD band. You may decide half duplex or full duplex. That is, in this case, whether to support half duplex in the FDD band may be indicated independently.
  • the terminal device 2 for which cross carrier scheduling is set can perform uplink and downlink cross carrier scheduling.
  • the communication efficiency is improved by setting the cross carrier scheduling for the uplink and the cross carrier scheduling for the downlink independently.
  • FIG. 6 is a flowchart showing the procedure of the process 6 of the terminal device 2 according to the embodiment of the present invention.
  • the terminal apparatus 2 determines whether or not the function of the terminal apparatus 2 supports the function of performing cross-carrier scheduling for uplink and downlink independently (step S601).
  • the terminal device 2 transmits the function information to the base station device 1.
  • the base station apparatus 1 Based on the function information, the base station apparatus 1 independently sets the settings related to the cross carrier scheduling for the uplink and the downlink to the terminal apparatus 2 and transmits the setting information to the terminal apparatus 2.
  • the terminal device 2 performs cross carrier scheduling for the uplink and the downlink based on the setting information.
  • step S602 it is determined whether or not the cross-carrier scheduling for the uplink and the downlink is set to be performed only one (step S602).
  • the terminal device 2 proceeds to processing 7.
  • no cross-carrier scheduling for uplink and downlink is set, or when cross-carrier scheduling for uplink and downlink is set (S602: NO)
  • the total number of blind decoding is The set (defined) value is not exceeded.
  • the terminal apparatus 2 proceeds to process 8.
  • the DCI format (PDCCH) including CIF and the DCI format not including CIF are divided. .
  • the number of DCI formats with different DCI format sizes increases, and the number of blind decoding increases accordingly.
  • the DCI included in the DCI format differs between the DCI format for the TDD cell and the DCI format for the FDD cell even if the DCI format is the same. There is. Therefore, since the DCI format for the TDD cell and the DCI format for the FDD cell may not have the same DCI format size, the total number of blind decoding increases.
  • the base station apparatus 1 may perform control so that the total number of blind decoding is not increased by setting the DCI format size of the DCI format for the TDD cell and the DCI format for the FDD cell to the same size.
  • the uplink grant and the downlink grant are transmitted in different cells (component carriers). Therefore, blind decoding is performed independently even in DCI formats of the same format size transmitted from different cells, and the number of blind decoding increases accordingly. That is, when cross-carrier scheduling is performed on both uplink and downlink, communication control can be performed so that the total number of blind decoding does not increase. Further, when cross-carrier scheduling is not performed on both uplink and downlink, communication control can be performed so that the total number of blind decoding does not increase.
  • cross-carrier scheduling is set independently for uplink and downlink, the total number of blind decoding increases unless cross-carrier scheduling is set for either one. In this case, in order not to increase the reception processing delay, it is necessary not to increase the total number of blind decoding.
  • the transmission / reception control may be performed so that the downlink grant for each cell is always transmitted from only one cell.
  • the one cell may be set by an upper layer. That is, notification may be made from the base station apparatus 1 to the terminal apparatus 2 using higher layer signaling.
  • the number of blind decoding for USS in each cell may be reduced.
  • the number of blind decoding may be reduced by reducing the number of PDCCH candidates for USS in each cell.
  • the blind decoding number may be reduced by limiting the aggregation level for USS in each cell.
  • CIF may also be included for a grant (DCI format) that does not perform cross-carrier scheduling.
  • the brand decoding is limited so as not to exceed the predetermined value.
  • the terminal device 2 does not support the function of performing the cross-carrier scheduling for the uplink and the downlink independently or supports the common function of performing the cross-carrier scheduling for the uplink and the downlink. Since the DCI format for the uplink and the DCI format for the downlink always include CIF or does not include CIF, the total number of blind decoding does not exceed a predetermined value.
  • One or more serving cells are set for the terminal device 2 that performs TDD-FDD carrier aggregation, the frame structure type (duplex mode) of at least two serving cells is different, and the serving cell is a primary cell, and PDCCH / EPDCCH may be monitored in a serving cell (for example, a TDD serving cell) in which the serving cell frame structure type is FDD and the other frame structure type for scheduling the serving cell is different (different frame structure type). If not configured, the uplink reference UL / DL configuration may not be set for the serving cell.
  • the uplink reference UL / DL setting is not set in the FDD serving cell. May be. In other words, when each serving cell is self-scheduling, an uplink reference UL / DL setting (virtual UL / DL setting) or RTT (virtual RTT) may not be set in the FDD serving cell.
  • One or more serving cells are set for the terminal device 2 that performs TDD-FDD carrier aggregation, the frame structure type (duplex mode) of at least two serving cells is different, and the serving cell is a primary cell, and
  • the serving cell frame structure type is TDD and the other frame structure type for scheduling the serving cell is different from the serving cell
  • the terminal device 2 is not set to monitor the PDCCH / EPDCCH.
  • the UL / DL setting of the serving cell may be an uplink reference UL / DL setting.
  • the uplink reference UL / DL setting may be set in the FDD serving cell.
  • an uplink reference UL / DL setting (virtual UL / DL setting) may be set for the FDD serving cell.
  • One or more serving cells are set for the terminal device 2 that performs TDD-FDD carrier aggregation, the frame structure type (duplex mode) of at least two serving cells is different, and the serving cell is a secondary cell, and In the serving cell where the serving cell is FDD and the other frame structure type for scheduling the serving cell is different (different frame structure type), the terminal device 2 is not set to monitor the PDCCH / EPDCCH In this case, the UL / DL setting of the serving cell having a different frame structure type and the uplink reference UL / DL setting corresponding to the pair configured by the FDD serving cell are set for the serving cell. It is. This uplink reference UL / DL setting may be managed in a table.
  • the uplink reference UL / DL configuration may be set based on the UL / DL configuration of serving cells having different frame structure types. Further, the uplink reference UL / DL configuration may be a UL / DL configuration of serving cells having different frame structure types.
  • the uplink reference UL / DL setting for the TDD serving cell and the uplink reference UL / DL setting for the FDD serving cell may correspond to a pair configured by the TDD serving cell and the FDD serving cell.
  • the uplink reference UL / DL configuration in this case may be defined independently from the uplink reference UL / DL configuration corresponding to the pair configured by the TDD serving cell and the TDD serving cell, or the same table. May be defined.
  • the RTT may be set individually.
  • the uplink reference UL / DL setting (virtual UL / DL setting) or RTT (virtual setting) is set in the FDD serving cell.
  • RTT may be set.
  • One or more serving cells are set for the terminal device 2 that performs TDD-FDD carrier aggregation, the frame structure type (duplex mode) of at least two serving cells is different, and the serving cell is a secondary cell, and In the serving cell where the serving cell is FDD and the other frame structure type for scheduling the serving cell is different (different frame structure type), the terminal device 2 is not set to monitor the PDCCH / EPDCCH In this case, the uplink reference UL / DL setting (virtual UL / DL setting) or RTT (virtual RTT) may not be set in the serving cell.
  • the uplink reference UL / DL setting virtual UL / DL setting
  • RTT virtual RTT
  • the uplink reference UL / DL setting (virtual UL / DL setting) or RTT (virtual RTT) may not be set for the FDD serving cell. Good.
  • One or more serving cells are set for the terminal device 2 that performs TDD-FDD carrier aggregation, the frame structure type (duplex mode) of at least two serving cells is different, and the serving cell is a secondary cell, and In the serving cell in which the serving cell is TDD and the other frame structure type for scheduling the serving cell is different, if the terminal apparatus 2 is not set to monitor the PDCCH / EPDCCH, the serving cell
  • the uplink reference UL / DL configuration corresponding to the pair configured by the UL / DL configuration of the serving cell with different frame structure type and the FDD serving cell may be set.
  • This uplink reference UL / DL setting may be managed in a table.
  • this uplink reference UL / DL setting may be set based on the UL / DL setting of the serving cell.
  • the uplink reference UL / DL setting may be the UL / DL setting of the serving cell.
  • the uplink reference UL / DL setting for the TDD serving cell may be the TDD UL / DL setting of the TDD serving cell.
  • the uplink reference UL / DL setting may not be set in the TDD serving cell.
  • an uplink reference UL / DL setting (virtual UL / DL setting) corresponding to a pair constituted by a plurality of serving cells is set for each serving cell. May be set.
  • an uplink reference UL / DL configuration (virtual UL / DL configuration) may be set for each of the TDD serving cell and the FDD serving cell that perform self-scheduling.
  • uplink reference UL / DL setting (virtual UL / DL setting) or RTT (virtual RTT) is set in a serving cell that performs self-scheduling (scheduling grant / DCI format without CIF is transmitted).
  • May be indicated by the function information of the terminal device 2 may be indicated by the RRC message from the base station device 1 to the terminal device 2, or system information may be received from the base station device 1. Or you may notify as alerting
  • the uplink reference UL / DL setting and / or the downlink reference UL / DL setting and / or the virtual UL / DL setting is applicable to the FDD cell used for TDD-FDD carrier aggregation is determined by the terminal device 2 It may be determined based on the function information. That is, the uplink reference UL / DL setting and / or the downlink reference UL / DL setting and / or the virtual UL / DL setting can be applied to the terminal device 2 for the FDD cell used for TDD-FDD carrier aggregation.
  • the base station apparatus 1 uses the uplink reference UL / DL setting and / or the downlink reference UL / DL setting and / or the FDD cell used for TDD-FDD carrier aggregation to the terminal apparatus 2.
  • Virtual UL / DL settings may be applied.
  • the virtual TDD UL / DL setting (virtual UL / DL setting) is set in the FDD serving cell for the terminal device 2 that performs TDD-FDD carrier aggregation
  • the UL / DL setting of the TDD serving cell and the virtual UL / DL of the FDD serving cell The uplink reference UL / DL configuration for the FDD serving cell may be determined based on the pair configured by the DL configuration.
  • the virtual UL / DL setting may be notified from the base station apparatus 1 to the terminal apparatus 2 using an upper layer (upper layer signaling). Further, the virtual UL / DL setting may be transmitted from the base station apparatus 1 to the terminal apparatus 2 using a certain DCI format.
  • the virtual UL / DL configuration may also be transmitted using a DCI format with a CRC scrambled by a specific RNTI. That is, when a CRC scrambled by a specific RNTI is detected, the terminal apparatus 2 considers that a field related to virtual UL / DL setting is set in the DCI format, and performs demodulation / decoding processing. In other words, when the virtual UL / DL setting is set in a certain DCI format, the base station apparatus 1 transmits the DCI format to the terminal apparatus 2 with a CRC scrambled by a specific RNTI.
  • the specific RNTI may be eIMTA-RNTI. Further, the specific RNTI may be TDD-RNTI.
  • the specific RNTI may be FDD-RNTI.
  • the specific RNTI may be TDD-FDD CA-RNTI.
  • a specific RNTI may also be used to identify a specific DCI format.
  • the specific RNTI may indicate that the specific DCI is set in the accompanying DCI format.
  • the UL / DL setting (virtual UL / DL setting) is set in the FDD secondary cell for the terminal device 2 that performs TDD-FDD carrier aggregation
  • the UL / DL setting of the TDD primary cell and the FDD secondary cell The downlink reference UL / DL configuration for the TDD primary cell and the FDD secondary cell may be determined based on the pair configured by the virtual UL / DL configuration.
  • the virtual TDD UL / DL setting (virtual UL / DL setting) is set in the FDD primary cell for the terminal device 2 that performs TDD-FDD carrier aggregation
  • the virtual UL / DL setting of the FDD primary cell and the TDD secondary cell The downlink reference UL / DL configuration for the FDD primary cell and the TDD secondary cell may be determined based on the pair configured by the UL / DL configuration.
  • the UL index (uplink index) or DCI format for the FDD serving cell DAI may be set.
  • the base station apparatus 1 and the terminal apparatus 2 perform TDD-FDD carrier aggregation, one or more serving cells are set in the terminal apparatus 2, and the duplex mode (frame structure type) of at least two serving cells is not the same.
  • the subframe configuration in the FDD cell may be based on the TDD UL / DL configuration set in the TDD cell.
  • UL / DL settings uplink reference UL / DL setting, downlink reference UL / DL setting, virtual UL / DL setting, reference UL / DL setting
  • corresponding to the TDD cell and the FDD cell may be set.
  • the downlink subframe for the downlink component carrier of the FDD cell may be configured based on the uplink reference UL / DL configuration and the downlink reference UL / DL configuration downlink subframe.
  • the uplink subframe with respect to the uplink component carrier of an FDD cell may be set based on the uplink subframe of an uplink reference UL / DL setting and a downlink reference UL / DL setting.
  • monitoring of the uplink grant (PDCCH / EPDCCH, DCI format) in the FDD cell may be performed based on the uplink reference UL / DL configuration.
  • the downlink grant (PDCCH / EPDCCH, DCI format) monitoring in the FDD cell may be performed based on the downlink reference UL / DL configuration. That is, the subframe for monitoring the PDCCH / EPDCCH accompanying the DCI format for transmitting the TPC command may be determined based on the uplink reference UL / DL configuration. In this case, the uplink reference UL / DL setting and the downlink reference UL / DL setting may not be the same setting.
  • the uplink grant may be transmitted in the downlink subframe indicated by the uplink reference UL / DL configuration.
  • the PHICH for PUSCH may be transmitted in the downlink subframe indicated by the uplink reference UL / DL configuration.
  • the downlink grant may be transmitted in the downlink subframe indicated by the downlink reference UL / DL configuration.
  • HARQ response information for PDSCH may be transmitted in an uplink subframe indicated by a downlink reference UL / DL configuration.
  • a subframe indicating a special subframe is a downlink sub It may be a frame.
  • the terminal device 2 may process the subframe # 1 and the subframe # 6 as a downlink subframe.
  • the terminal device 2 For the FDD cell in which the uplink reference UL / DL setting is set, the terminal device 2 performs DCI format 0/4 with the C-RNTI of the terminal device 2 or DCI format 0 for the SPS C-RNTI in each subframe. PDCCH / EPDCCH of the terminal apparatus 2 and TPC-PUSCH-RNTI of the terminal apparatus 2 may not be tried for decoding of the DCI format 3 / 3A PDCCH. That is, for the FDD cell in which the uplink reference UL / DL setting is set, the terminal device 2 performs the uplink reference UL / DL setting except in the case of DRX or when the FDD cell is deactivated.
  • the TPC command for the PUSCH is transmitted by referring to the uplink reference UL / DL configuration for the serving cell c.
  • a value to be applied (a value of K PUSCH ) may be determined.
  • the value of K PUSCH corresponding to the uplink reference UL / DL configuration may be managed in a table.
  • the value of K PUSCH corresponding to the uplink reference UL / DL configuration may be indicated by a bitmap.
  • the value of K PUSCH corresponding to the uplink reference UL / DL configuration may be indicated by an offset and a period.
  • K PUSCH is information indicating a subframe in which a TPC command applied to transmission power for PUSCH transmitted in subframe i is transmitted when performing PUSCH transmission in subframe i.
  • the terminal apparatus 2 applies the TPC command received 7 subframes before the subframe i. That is, when the terminal apparatus 2 performs PUSCH transmission in subframe i, PDCCH / EPDCCH with DCI format 0/4 for serving cell c (or PDCCH with DCI format 3 / 3A) before K PUSCH subframes from subframe i.
  • the uplink reference UL / DL configuration may be a TDD UL / DL configuration configured in the TDD serving cell. Further, the uplink reference UL / DL configuration may be determined based on a table set for TDD-FDD carrier aggregation. Further, the uplink reference UL / DL setting may be applied only when the duplex mode set in the primary cell is TDD. That is, when the frame structure type set in the primary cell is FDD, the uplink reference UL / DL setting may not be applied. When the uplink UL / DL configuration is not applied to the FDD cell, the value of K PUSCH is a predetermined value. Further, the uplink reference UL / DL setting may be set based on the TDD UL / DL setting set in the TDD serving cell. That is, the uplink reference UL / DL setting may be set independently of the TDD serving cell.
  • an uplink reference UL / DL configuration and / or a downlink reference UL / DL configuration may be applied according to the frame structure type of the primary cell.
  • the uplink reference UL / DL setting and / or the downlink reference UL / DL setting (or virtual UL / DL setting) is not applied to the FDD secondary cell.
  • the frame structure type of the primary cell is TDD
  • an uplink reference UL / DL setting and / or a downlink reference UL / DL setting (or virtual UL / DL setting) may be applied to the FDD secondary cell. .
  • the value of K PUSCH for the uplink subframe in which the FDD serving cell exists is a predetermined value (for example, 4). That is, when the FDD serving cell is self-scheduling, the value of K PUSCH is a predetermined value (for example, 4).
  • the predetermined value may be set using RTT.
  • the predetermined value may be set using higher layer signaling.
  • the value of K PUSCH for the uplink subframe in which the FDD serving cell exists is a predetermined value (for example, 4) It is.
  • the predetermined value may be set using RTT.
  • the predetermined value may be set using higher layer signaling.
  • the value of K PUSCH for the uplink subframe in which the FDD serving cell exists is applied to the FDD serving cell. It is specified based on the value of the uplink reference UL / DL configuration (virtual UL / DL configuration) and / or UL index.
  • FIG. 7 shows an example of the value of K PUSCH corresponding to the uplink reference UL / DL configuration (UL-reference UL / DL configuration).
  • subframes corresponding to subframe # 2 and subframe # 3 are the same subframe. become.
  • a UL index included in the DCI format may be used. For example, when the least significant bit (LSB: Least Significant Bit) of the UL index is set to “1”, subframe # 2 (or subframe # 7) may be indicated. That is, a predetermined subframe can be specified using the UL index.
  • LSB least significant bit
  • subframe # 2 or subframe # 7 If PUSCH transmission in subframe # 2 or subframe # 7 is scheduled using DCI format 0/4 with the least significant bit of the UL index set to “1”, then subframe # 2 or subframe # 7 The value of K PUSCH in frame # 7 is 7. Further, in subframe # 2 and subframe # 7, information related to TPC command and PUSCH scheduling may be transmitted in different subframes.
  • the base station apparatus 1 may transmit a DCI format or a TPC command for a specific subframe to the terminal apparatus 2 using the UL index.
  • the number of uplink subframes is larger than the number of downlink subframes ( For example, if the UL / DL setting 0 shown in FIG. 3 is used, the subframe # 2 or the subframe # 2 is determined based on the value of the least significant bit of the UL index transmitted in the DCI format 0/4. The value of K PUSCH for PUSCH transmission in # 7 is specified.
  • the value of K PUSCH for PUSCH transmission in subframe # 2 or # 7 is predetermined. Is specified as a value (for example, 7). Also, the value of K PUSCH for uplink subframes other than subframe # 2 or # 7 may be specified based on the table shown in FIG. Further, in the uplink reference UL / DL setting, the number of uplink subframes is equal to or less than the number of downlink subframes (for example, a configuration like UL / DL settings 1 to 6 shown in FIG. 3).
  • the value of K PUSCH for a certain uplink subframe may be specified based on the table shown in FIG.
  • the terminal device 2 sets the value of K PUSCH to a predetermined value (for example, You may specify as 4).
  • the value of K PUSCH for a certain uplink subframe is a predetermined value (for example, 4).
  • the TPC command for the PUCCH is transmitted by referring to the downlink reference UL / DL configuration for the serving cell c. values for application to the (M and k m) may be determined.
  • the power control adjustment state (power control adjustment value) g (i) for the PUCCH includes the power control adjustment value g (i-1) of the subframe i ⁇ 1 and the subframe i ⁇ k m (k 0 , k 1 ,.
  • Figure 8 is a downlink reference UL / DL Configuration (DL-reference UL / DL configuration ) downlink associated set corresponding to the index K: ⁇ k 0, k 1 , ..., k m ⁇ shows an example of.
  • a downlink subframe in which a TPC command for PUCCH is transmitted based on the DL reference UL / DL configuration is shown.
  • FIG. 8 shows a transmission subframe for PUCCH. That is, PUCCH transmission may be performed based on the uplink subframe set in the DL reference UL / DL configuration.
  • the terminal apparatus 2 may transmit the PUCCH in a subframe not indicated by “ ⁇ ”.
  • PUCCH (or UCI using PUCCH) may be transmitted in subframe # 2, subframe # 4, subframe 7, and subframe # 9.
  • PUCCH (or UCI using PUCCH) may be transmitted only in subframe # 2.
  • the DCI format related to the downlink includes a 2-bit downlink DAI field and a 4-bit HARQ process number field
  • a DCI format related to the uplink includes a 2-bit uplink DAI field, and a UL index.
  • the field may not be in the DCI format for uplink.
  • an SRS request is made to the FDD serving cell using the DCI format 2B / 2C / 2D. May be sent. That is, when the base station apparatus 1 sets the uplink reference UL / DL setting for the FDD serving cell with respect to the terminal apparatus 2, the SRS uses the DCI format 2B / 2C / 2D for the FDD serving cell. You may send a request.
  • RTT indicates the period (subframe) from when the terminal device 2 receives the PHICH / uplink grant until it transmits (or retransmits) the PUSCH, and transmits (or retransmits) the PUSCH.
  • a period (subframe) from the reception of the PHICH to the reception thereof is indicated.
  • An RTT corresponding to each case may be set. That is, a plurality of RTTs may be set.
  • the HARQ process number transmitted using the DCI format 2B / 2C / 2D may be 4 bits. That is, when the base station apparatus 1 sets the uplink reference UL / DL setting for the FDD serving cell for the terminal apparatus 2, the base station apparatus 1 uses the DCI format 2B / 2C / 2D for the FDD serving cell. A bit HARQ process number may be transmitted.
  • the UL index or DAI may be transmitted using the DCI format 0/4. That is, when the uplink reference UL / DL setting is set for the FDD serving cell, the base station apparatus 1 may transmit the UL index or DAI using the DCI format 0/4 to the terminal apparatus 2. .
  • the base station apparatus 1 uses the DCI format 0/4 to set the UL index or DAI may not be transmitted. In that case, even if the terminal device 2 receives the DCI format 0/4, the terminal device 2 does not perform reception processing in consideration of the UL index or DAI.
  • the UL index or DAI using the DCI format 1 / 1A / 1B / 1D / 2 / 2A / 2B / 2C / 2D is May be sent. That is, when the base station apparatus 1 applies the uplink reference UL / DL setting or the RTT to the FDD serving cell for the terminal apparatus 2, the DCI format 1 / 1A / 1B / 1D / 2 / 2A / 2B / 2C Send UL index or DAI using / 2D.
  • the base station apparatus 1 applies the DCI format 1 / 1A / 1B / 1D / 2 / 2A / 2B / 2C / 2D to the terminal apparatus 2. It is not necessary to transmit the UL index or DAI. In this case, the terminal device 2 does not perform reception processing considering the UL index or DAI even if the DCI format 1 / 1A / 1B / 1D / 2 / 2A / 2B / 2C / 2D is received.
  • the subframe i is the uplink reference UL / DL setting or RTT in the FDD serving cell in which the uplink reference UL / DL setting is set.
  • the power control adjustment value f c (i) in subframe i for the serving cell c is f c (i ⁇ 1).
  • the power control adjustment value f c (i) of subframe i for the serving cell c when the PDCCH / EPDCCH with DCI format 0/4 is not decoded for the serving cell c is f c (i ⁇ 1). is there.
  • the power control adjustment value f c (i) for the serving cell c in subframe i in which DRX occurs is f c (i ⁇ 1).
  • the power control adjustment value f c (i) for the serving cell c in subframe i that is not an uplink subframe in TDD is f c (i ⁇ 1). That is, when these conditions are satisfied, the power control adjustment value f c (i) for the serving cell c in subframe i is the same as the power control adjustment value f c (i ⁇ 1) for the serving cell c in subframe i ⁇ 1. is there.
  • the SRS period (SRS periodicity) and SRS subframe offset (SRS subframe offset) setting (SRS period) for the FDD is set for the FDD serving cell
  • the SRS setting index for the SRS subframe offset is set
  • the SRS transmission is performed using the SRS period (SRS periodicity) and SRS for the uplink subframe and FDD indicated in the uplink reference UL / DL setting. This is performed only in subframes where SRS subframes set based on the subframe offset (SRS (subframe offset) setting overlap.
  • the terminal device 2 may not perform SRS transmission in the SRS subframe. .
  • the base station apparatus 1 does not transmit an SRS request such that an SRS is transmitted in such an SRS subframe.
  • the base station apparatus 1 does not transmit an SRS request at a timing at which the SRS is transmitted in such an SRS subframe.
  • the terminal device 2 may transmit the P-SRS in such an SRS subframe.
  • the terminal device 2 may not transmit the A-SRS in such an SRS subframe.
  • the terminal apparatus 2 may not transmit an A-SRS in such an SRS subframe. That is, when an SRS request for such an SRS subframe is transmitted by self-scheduling, the terminal device 2 may transmit an A-SRS in such an SRS subframe.
  • the UL index is included in the DCI format 0/4 for the FDD serving cell in which the uplink reference UL / DL setting is set. It is set.
  • a subframe defined as a special subframe may be a downlink subframe.
  • a predetermined value is set in RTT.
  • the RTT may be configured using higher layer signaling. Also, the RTT may be set using L1 / L2 signaling. The RTT may be set using a system information block.
  • the DDI format 0/4 for the FDD serving cell in which the uplink reference UL / DL configuration is set includes DAI Is set.
  • the reference UL / DL configuration When the reference UL / DL configuration is applied to the FDD cell, the reference UL / DL configuration may be independently applied to the uplink component carrier and the downlink component carrier used for the FDD cell. That is, the uplink reference UL / DL configuration may be applied to the uplink component carrier used for the FDD cell, and the downlink reference UL / DL configuration may be applied to the downlink component carrier used for the FDD cell. .
  • FIG. 9 shows an example of an effective subframe when the reference UL / DL configuration is applied to each of the uplink / downlink of the FDD cell.
  • FIG. 9 illustrates the case of uplink reference UL / DL setting 0 and downlink reference UL / DL setting 5, other settings may be used.
  • the terminal device 2 does not expect to detect a plurality of DCI formats of the same type indicating different resource assignments and settings for one uplink subframe. That is, the base station apparatus 1 does not transmit a plurality of the same type of DCI formats indicating different settings in the same downlink subframe or the same downlink subframe for one uplink subframe.
  • DCI format 0 with different PUSCH resource allocation is not transmitted in uplink subframe # 2 in different downlink subframes (for example, downlink subframes # 7 and # 8).
  • the terminal device 2 for which the trigger type 1 SRS transmission is configured may receive a type 1 SRS triggering event related to different values of parameters for the trigger type 1 SRS transmission configured by higher layer signaling for the same subframe of the same serving cell. Do not expect to receive. That is, the terminal device 2 does not expect that A-SRSs with different settings are requested in the same subframe of the same serving cell.
  • the base station apparatus 1 does not request the terminal apparatus 2 for A-SRS with different settings in the same subframe of the same serving cell.
  • the terminal apparatus 2 performs transmission / reception processing based on the uplink reference UL / DL setting and the downlink reference UL / DL setting or reference RTT (virtual RTT).
  • the terminal device 2 When the uplink reference UL / DL configuration and the downlink reference UL / DL configuration (virtual UL / DL configuration) or reference RTT (virtual RTT) is not applied in self-scheduling and / or cross-carrier scheduling, the frame structure type of the serving cell Based on the above, the terminal device 2 performs transmission / reception processing.
  • the DCI format for the scheduled cell is the schedule cell type. It may be configured based on the frame structure type. That is, the base station apparatus 1 transmits a DCI format based on the frame structure type of the scheduled cell to the terminal apparatus 2, and the terminal apparatus 2 performs reception processing based on the frame structure type of the scheduled cell. To do.
  • the DCI format for the scheduled cell (Scheduled cell) transmitted from the scheduling cell (Scheduling cell) may be configured based on the frame structure type of the cell that performs scheduling. That is, the base station apparatus 1 transmits a DCI format corresponding to the frame structure type of the cell to be scheduled to the terminal apparatus 2, and the terminal apparatus 2 determines the DCI based on the frame structure type of the cell to be scheduled. A format reception process may be performed. Note that which cell the DCI format is to be transmitted to may be determined based on the function information of the terminal device 2. That is, it may be indicated whether or not the terminal device 2 has a function of supporting a DCI format reception process for the first frame structure type (duplex mode).
  • the terminal device 2 may indicate whether or not the terminal device 2 has a function of supporting a DCI format reception process for the second frame structure type (duplex mode).
  • the terminal device 2 may indicate whether or not the terminal device 2 has a function of supporting a DCI format reception process for the nth frame structure type (duplex mode). Similarly, it may be indicated whether or not the terminal device 2 has a function of supporting a DCI format transmission process for the nth frame structure type (duplex mode). That is, the base station apparatus 1 performs transmission / reception processing and scheduling processing according to the frame structure type supported by the terminal device 2.
  • the terminal apparatus 2 performs transmission / reception processing based on function information indicating whether transmission / reception processing is performed according to the frame structure type of the cell to be scheduled or transmission / reception processing is performed according to the frame structure type of the scheduled cell. And a scheduling process may be performed.
  • transmission / reception processing may be performed according to the frame structure type of the primary cell or a specific cell.
  • DCI format transmission / reception processing for TDD may be performed.
  • DCI format transmission / reception processing for FDD may be performed.
  • the terminal apparatus 2 may perform transmission / reception processing as a cell of the second frame structure type after a predetermined subframe after the switching is instructed. That is, as soon as switching is instructed, the indicated frame structure type may not be applied.
  • the terminal device 2 When a plurality of cells are aggregated, the terminal device 2 performs processing assuming that the guard periods of special subframes in different cells overlap at least by 1456 basic time units (basic time units). In addition, when a plurality of cells having different frame structure types are aggregated, the terminal device 2 performs processing assuming that the guard periods of the special subframes in the plurality of TDD cells overlap by at least 1456 basic time units. Do.
  • 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 receiving unit 105, a transmitting unit 107, a channel measuring 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. Further, 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.
  • the upper layer processing unit 101 also arranges a radio resource (resource block) in which the terminal apparatus 2 arranges a physical uplink shared channel (PUSCH: Physical Uplink Shared Channel) that is uplink data information from among uplink radio resources. ). Further, the upper layer processing unit 101 determines a radio resource (resource block) in which a physical downlink shared channel (PDSCH: Physical Downlink Shared Channel) that is downlink data information is arranged from downlink radio resources. .
  • Information for arranging radio resources may be referred to as resource block assignment (Resource ⁇ block assignment) or resource allocation (Resource allocation).
  • the higher 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.
  • 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 when allocating radio resources for arranging the PUSCH. That is, the upper layer processing section 101 generates information regarding various downlink signal settings and information regarding various uplink signal settings for a certain terminal device or certain cell.
  • the upper layer processing unit 101 may generate information on various downlink signal settings and information on various uplink signal settings for each cell. Further, the upper layer processing unit 101 may generate information regarding various downlink signal settings and information regarding various uplink signal settings for each terminal apparatus 2.
  • 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 generated 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.
  • radio resources are time frequency resources, subcarriers, resource elements (RE: REResource 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.
  • RE REResource Element
  • REG Resource Element Group
  • CCE Control Channel Element
  • resource blocks RB: (Resource Block)
  • RBG Resource Block Group
  • 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.
  • the configuration of TDD may be indicated by setting an index. By notifying the terminal device 2 of the index, communication can be performed using the TDD subframe configuration (subframe pattern) corresponding to the index.
  • a second TDD UL / DL setting may be set.
  • 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. It is a kind of system information block type 1.
  • the TDD UL / DL setting may be transmitted in another system information block.
  • the system information block type 2 includes information elements related to radio resource control.
  • a parameter related to an information element may be included as an information element in a certain information element.
  • 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- There is a random value for PUCCH RNTI, contention resolution. These IDs are used in cell units. These IDs are set by the upper layer processing unit 101.
  • 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.
  • RNTI is set and notified to the terminal device 2.
  • an ID corresponding to the physical layer cell ID, virtual cell ID, or 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 layer cell ID and the virtual cell ID may be used for generating a physical channel and physical signal series.
  • the upper layer processing unit 101 generates DCI transmitted using PDCCH or EPDCCH, and transmits the DCI to the terminal device 2 via the transmission unit 107.
  • 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 HARQ response information (HARQ-ACK, ACK / NACK / DTX), scheduling request (SR: Scheduling Request), and channel state information (CSI: Channel State 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, the upper layer processing unit 101 generates information related to transmission power control of the base station device 1 and the terminal device 2. For example, 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.
  • uplink signals PRACH, PUCCH, PUSCH, UL DMRS, P-SRS, and A-SRS.
  • the higher layer processing section 101 sends parameters related to transmission power
  • the upper layer processing unit 101 transmits parameters used for setting the maximum transmission power P CMAX, c and the total maximum output power P CMAX 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.
  • the transmission power of the terminal device 2 is set so that the PUSCH and the like satisfy a predetermined channel quality, considering interference with the adjacent base station device 1, Information indicating these settings is transmitted to the terminal device 2 via the transmission unit 107.
  • the upper layer processing unit 101 is set as information shared between the terminal apparatuses 2 (information on shared parameters regarding uplink power control) or a parameter common between the terminal apparatuses 2 (sharable parameters).
  • Information includes standard power ( PO_NOMINAL_PUSCH , PO_NOMINAL_PUCCH ), propagation loss compensation coefficient (attenuation coefficient) ⁇ , power offset for message 3, power offset specified for each PUCCH format, and the like as system information.
  • Send At this time, the power offset of PUCCH format 3 and the power offset of delta PUCCH format 1bCS may be added and notified. Further, information on these shared parameters may be notified by an RRC message.
  • the higher layer processing section 101 indicates whether the terminal device specific PUSCH power P 0_UE_PUSCH and delta MCS are valid. (DeltaMCS-Enabled), a parameter (accumulationEnabled) indicating whether or not accumulation is enabled, terminal device specific PUCCH power P 0_UE_PUCCH , P-SRS power offset P SRS_OFFSET (0), and a filter coefficient are notified by an RRC message.
  • the transmission diversity power offset in each PUCCH format, A-SRS power offset P SRS_OFFSET (1) 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).
  • This is a coefficient (attenuation coefficient, transmission line loss compensation coefficient) that determines whether power is compensated.
  • ⁇ usually takes a value from 0 to 1, if 0, power compensation according to the path loss is not performed, and if 1, the transmission power of the terminal device 2 is compensated so that the influence of the path loss does not occur in the base station device 1. To do.
  • These pieces of information may be transmitted to the terminal device 2 as reset information.
  • these shared parameters and dedicated parameters may be set independently in the primary cell and the secondary cell or in a plurality of serving cells.
  • the upper layer processing unit 101 performs various settings based on the function information of the terminal device 2. For example, the uplink carrier frequency and the downlink carrier frequency are determined from the band (EUTRA Operating Band) supported by the terminal device 2 based on the function information of the terminal device 2. Further, based on the function information of the terminal device 2, it is determined whether or not to perform MIMO communication with the terminal device 2. Further, based on the function information of the terminal device 2, it is determined whether or not to perform carrier aggregation. Further, based on the function information of the terminal device 2, it is determined whether or not to perform carrier aggregation using component carriers of different frame structure types.
  • the band EUTRA Operating Band
  • the terminal device 2 is notified of the determined information.
  • Information on the carrier frequency may be notified by an RRC message. That is, information on the carrier frequency may be notified by system information. Further, information regarding the carrier frequency may be notified by being included in the mobility control information. Moreover, the information regarding a carrier frequency may be notified from a higher layer as RRC information.
  • the setting related to cross-carrier scheduling for the uplink (CrossCarrierSchedulingConfig -UL) is set, and the setting information is transmitted to the terminal device 2 via the transmission unit 107 using higher layer signaling.
  • the information (schedulingCellId-UL) indicating the cell that signals the uplink grant (which cell signals the uplink grant) may be included in the setting related to cross carrier scheduling for the uplink.
  • information (cif-Presence-UL) indicating whether or not there is CIF in the PDCCH / EPDCCH DCI format (DCI format for uplink) may be included in the setting related to cross carrier scheduling for uplink.
  • the setting related to cross carrier scheduling for the downlink (CrossCarrierSchedulingConfig -DL) is set, and the setting information is transmitted to the terminal device 2 via the transmission unit 107 using higher layer signaling.
  • the configuration related to downlink cross-carrier scheduling may include information (schedulingCellId-DL) indicating a cell that signals downlink allocation (downlink grant) (which cell signals downlink allocation).
  • the setting related to downlink cross carrier scheduling may include information (pdsch-Start) indicating a start OFDM symbol corresponding to information indicating a cell.
  • information (cif-Presence-DL) indicating whether or not CIF is included in the PDCCH / EPDCCH DCI format (DCI format for downlink) may be included in the setting related to cross carrier scheduling for the downlink.
  • the upper layer processing unit 101 assigns a cell index other than a specific value (for example, an information bit corresponding to “0” or “0”) to the secondary cell. And the setting information is transmitted to the terminal device 2.
  • the terminal device 2 regards the cell index of the primary cell as a specific value.
  • 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 higher layer processing section 101 may set parameters related to transmission power or transmission power of downlink / uplink signals that are common between the terminal devices 2. The upper layer processing section 101 uses the information regarding these parameters as information regarding uplink power control (parameter information regarding uplink power control) and / or information regarding downlink power control (parameter information regarding downlink power control). You may transmit to the apparatus 2.
  • the parameter information related to uplink power control and the parameter information related to downlink power control include at least one parameter and are transmitted to the terminal device 2.
  • 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 and SI-RNTI (System Information RNTI) may be set.
  • C-RNTI Cell Radio Network Temporary Identifier
  • Temporary C-RNTI 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 and SI-RNTI (System Information RNTI) may be set.
  • the upper layer processing unit 101 sets ID values such as a physical layer 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 receiving unit 105 and the transmitting unit 107 based on the control information from the higher layer processing unit 101. Control unit 103 outputs the generated control signal to receiving unit 105 and transmitting unit 107 to control receiving unit 105 and transmitting unit 107.
  • the upper layer processing unit 101 may apply the uplink reference UL / DL setting and / or the downlink reference UL / DL setting (virtual UL / DL setting) to the FDD cell. Uplink and downlink scheduling may be performed on the FDD cell to which the uplink reference UL / DL configuration is applied using the DCI format for TDD. The upper layer processing unit 101 performs uplink and downlink scheduling for the FDD cell to which the uplink reference UL / DL setting is not applied, using the DCI format for FDD.
  • the upper layer processing unit 101 schedules PUSCH transmission using the PDCCH / EPDCCH with DCI format 0/4 in which the UL index is set for the FDD cell to which the uplink reference UL / DL configuration is applied. Also good. Upper layer processing section 101 may schedule PUSCH transmission using PDCCH / EPDCCH with DCI format 0/4 that does not set the UL index for FDD cells to which uplink reference UL / DL configuration is not applied. .
  • the upper layer processing unit 101 may determine whether or not to set the UL / DL setting for the FDD cell based on the function information transmitted from the terminal device 2.
  • the upper layer processing unit 101 applies the uplink reference UL / DL setting and / or the downlink reference UL / DL setting (virtual UL / DL setting) to the FDD secondary cell depends on the frame of the primary cell. It may be determined according to the structure type. When the frame structure type of the primary cell is TDD, the uplink reference UL / DL setting and / or the downlink reference UL / DL setting (virtual UL / DL setting) may be applied to the FDD secondary cell. When the frame structure type of the primary cell is FDD, the uplink reference UL / DL setting and / or the downlink reference UL / DL setting (virtual UL / DL setting) may not be applied.
  • the upper layer processing unit 101 sets setting information and / or parameters related to any of the first to fourth methods. And transmitted to the terminal device 2. For example, resource block offsets for the lower end and the upper end of the uplink bandwidth are set and transmitted to the terminal apparatus 2.
  • setting a parameter includes setting a value for the parameter. That is, when restricting the physical resource mapping of the uplink signal to the terminal device 2, the upper layer processing unit 101 sets the setting information and / or parameters related to any of the first method to the fourth method to 0. A value other than is set and transmitted to the terminal device 2.
  • 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 upper 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. Radio receiving section 1057 performs fast Fourier transform (FFT: Fast Fourier Transform) on the signal from which the guard interval has been removed, extracts a frequency domain signal, and outputs the signal to demultiplexing section 1055.
  • FFT Fast Fourier Transform
  • the higher layer processing unit 101 sets setting information and / or parameters related to any one of the first method to the fourth method for the terminal device 2 and transmits the setting information to the terminal device 2.
  • the physical resource for the PUCCH is received based on one of the first method to the fourth method.
  • the receiving unit 105 sets setting information and / or parameters related to any of the first to fourth methods and transmits the setting information to the terminal device 2
  • the physical resource for the PRACH is from the first method. Receive based on any of the fourth methods.
  • 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. ) 4-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 by the downlink control information to each terminal apparatus 2.
  • the decoding unit 1051 outputs the demodulated encoded bits of the PUCCH and PUSCH in a predetermined encoding method in advance, or the base station device 1 sends the terminal device 2 in advance 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.
  • 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) based on the control signal input from the control unit 103, and receives the data information and downlink control information input from the higher layer processing unit 101. It encodes and modulates, multiplexes PDCCH (EPDCCH), PDSCH, and a downlink reference signal, and transmits a downlink signal to the terminal device 2 via the transmission / reception antenna 111.
  • a downlink reference signal (downlink reference signal) based on the control signal input from the control unit 103, and receives the data information and downlink control information input from the higher layer processing unit 101. It encodes and modulates, multiplexes PDCCH (EPDCCH), PDSCH, and a downlink reference signal, and transmits a downlink signal to the terminal device 2 via the transmission / reception antenna 111.
  • the transmitter 107 When the uplink reference UL / DL setting (or virtual UL / DL setting) or RTT (virtual RTT) is set for the FDD cell, the transmitter 107 performs FDD based on the uplink reference UL / DL setting.
  • the UL index or DAI may be set in the DCI format associated with the uplink for the cell and transmitted.
  • the transmission unit 107 may not set the UL index or DAI in the DCI format related to the uplink. .
  • the transmission unit 107 sets the downlink reference UL / DL setting or RTT (virtual RTT).
  • a DAI and / or SRS request may be set and transmitted in the DCI format associated with the uplink for the FDD cell.
  • the transmission unit 107 may not set the DAI and SRS requests in the DCI format related to the downlink. .
  • the transmitting unit 107 may set two RTTs (Round Trip Timer) for the FDD cell when performing carrier aggregation using cells (component carriers) of different frame structure types.
  • the transmission unit 107 may schedule one or more uplink subframes for the terminal device 2 by transmitting the UL index using one DCI format. For example, when the UL index is composed of 2 bits, two uplink subframes are set by setting the most significant bit (MSB: Most Significant Bit) and the least significant bit (LSB: Least Significant Bit) to “1”. Can be scheduled. For example, when transmitting section 107 transmits a UL index in which both MSB and LSB are set to “1” in subframe n using DCI format 0/4, terminal apparatus 2 uses n + k and n + j (k ⁇ j), PUSCH transmission can be performed.
  • MSB Most Significant Bit
  • LSB least significant bit
  • terminal apparatus 2 When transmitting section 107 transmits a UL index in which only the MSB is set to “1” in subframe n using DCI format 0/4, terminal apparatus 2 performs PUSCH transmission in n + k. In addition, when transmitting section 107 transmits a UL index in which only LSB is set to “1” in subframe n using DCI format 0/4, terminal apparatus 2 performs PUSCH transmission in n + j.
  • the transmission unit 107 may perform transmission processing of a DCI format to be transmitted based on the frame structure type of a cell to be scheduled. Further, when performing TDD-FDD carrier aggregation, transmission section 107 may perform transmission processing of a DCI format to be transmitted based on the frame structure type of the cell to be scheduled.
  • the transmitting unit 107 may transmit the DCI format with a virtual UL / DL setting.
  • 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 higher layer processing unit 201 has various control information of its own station managed by the higher layer processing unit 201 in which the downlink control information notified from the base station apparatus 1 by PDCCH and the radio resource control information notified by PDSCH are set. 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. .
  • the set information is generated and output to the transmission unit 207 via the control unit 203.
  • the upper layer processing unit 201 when establishing a connection with the base station apparatus 1, the upper layer processing unit 201 generates function information of the terminal apparatus 2 and outputs the function information to the transmission unit 207 via the control unit 203. To notify.
  • the higher layer processing unit 201 may notify the base station apparatus 1 of the function information after the connection with the base station apparatus 1 is established.
  • the function information may include information on RF parameters (RF-Parameters).
  • the information related to the RF parameter may include information indicating a band supported by the terminal device 2 (1st ⁇ ⁇ SupportedBandCombination).
  • the information related to the RF parameter may include information (SupportedBandCombinationExt) indicating a band that supports carrier aggregation and / or MIMO.
  • the information regarding the RF parameter may include information indicating a band that supports a plurality of timing advance functions simultaneously performed by the terminal device 2 and a function for performing transmission / reception between bands simultaneously (2nd SupportedBandCombination). Good.
  • Each of these bands may be listed. Values (entries) indicated by a plurality of listed information may be common (may indicate the same).
  • bandE-UTRA Full duplex is supported in bands where half duplex is not supported.
  • the carrier supported by the terminal device 2 supports carrier aggregation and / or MIMO in the uplink.
  • Whether the carrier supported by the terminal device 2 supports carrier aggregation and / or MIMO in the downlink may be indicated.
  • the information on the RF parameter may include information indicating a band that supports TDD-FDD carrier aggregation. These bands may be listed.
  • the information related to the RF parameter may include information indicating whether a function of simultaneously transmitting / receiving between bands that support TDD-FDD carrier aggregation is supported.
  • the information regarding the RF parameters may include information indicating whether transmission / reception can be performed simultaneously between bands of different duplex modes.
  • the function information may include information on physical layer parameters (PhyLayerParameters).
  • the information regarding the physical layer parameters may include information indicating whether or not a function of performing cross carrier scheduling is supported. Further, the information regarding the physical layer parameters may include information indicating whether or not a function of performing cross-carrier scheduling for the uplink (CrossCarrierScheduling-UL) is supported. Also, the information regarding the physical layer parameters may include information indicating whether or not a function of performing cross-carrier scheduling for the downlink (CrossCarrierScheduling-DL) is supported.
  • the base station device 1 For the terminal device 2 having a function of performing cross carrier scheduling for the uplink, the base station device 1 performs the setting related to the cross carrier scheduling for the uplink to the terminal device 2, thereby changing the uplink grant to the cross carrier. You may notify by scheduling. That is, the base station apparatus 1 may transmit the DCI format (uplink grant) regarding PUSCH scheduling for the second cell to the terminal apparatus 2 using the PDCCH of the first cell.
  • the terminal device 2 can identify which cell is the DCI format by reading the CIF included in the DCI format accompanying the PDCCH transmitted by the PDCCH of the first cell.
  • the base station device 1 For the terminal device 2 having the function of performing the cross carrier scheduling for the downlink, the base station device 1 performs the setting related to the cross carrier scheduling for the downlink with respect to the terminal device 2 to thereby convert the downlink grant to the cross carrier. You may notify by scheduling. That is, the base station apparatus 1 may transmit the DCI format (downlink grant) related to PDSCH scheduling for the second cell to the terminal apparatus 2 using the PDCCH of the first cell.
  • the terminal device 2 can identify which cell is the DCI format by reading the CIF included in the DCI format accompanying the PDCCH transmitted by the PDCCH of the first cell.
  • the cross-carrier scheduling capability related to the downlink and the cross-carrier scheduling capability related to the uplink are respectively set.
  • the parameter group of the physical layer of the information element (for example, UE-EUTRA-Capability) of the RRC message used when the terminal device 2 notifies the base station device 1 of the capability of the terminal device 2 A field (first field) indicating whether to support downlink cross-carrier scheduling and a field (second field) indicating whether to support uplink cross-carrier scheduling may be included.
  • the terminal device 2 that supports cross-carrier scheduling related to the downlink notifies the base station device 1 of the physical layer parameter group including the first field.
  • the base station apparatus 1 that has received the notification can recognize that the terminal apparatus 2 is a terminal apparatus that supports cross-carrier scheduling related to the downlink.
  • the terminal apparatus 2 that does not support downlink cross-carrier scheduling notifies the base station apparatus 1 without including the first field in the physical layer parameter group (omitting the value set in the first field). May be.
  • the base station device 1 that has received the notification can recognize that the terminal device 2 is a terminal device that does not support cross-carrier scheduling related to the downlink.
  • the terminal apparatus 2 that supports cross-carrier scheduling related to the uplink notifies the base station apparatus 1 of the physical layer parameter group including the second field.
  • the base station device 1 that has received the notification can recognize that the terminal device 2 is a terminal device that supports cross-carrier scheduling related to uplink.
  • the terminal apparatus 2 that does not support cross-carrier scheduling related to the uplink notifies the base station apparatus 1 without including the second field in the physical layer parameter group.
  • the base station device 1 that has received the notification can recognize that the terminal device 2 is a terminal device that does not support cross-carrier scheduling related to the uplink.
  • a value set in a field is omitted, it is different from any value set in the field (for example, “1” indicating that the corresponding function is supported) (for example, corresponding) Does not support the function).
  • a terminal device that supports cross-carrier scheduling in conventional carrier aggregation (FDD and FDD carrier aggregation and TDD and TDD carrier aggregation). That is, in order to set a value (for example, “1” indicating support) in the first field and / or the second field, a value (in the field indicating whether to support cross carrier scheduling in the conventional carrier aggregation ( For example, it may be necessary that “1” indicating support is set.
  • the parameter group of the function group information in the information element of the RRC message used when the terminal device 2 notifies the base station device 1 of the capability of the terminal device 2
  • FGI Feature Group Information
  • a field indicating whether to support cross-carrier scheduling for the link (first field) and a field indicating whether to support cross-carrier scheduling for the uplink (second field) are always included,
  • the values set in these fields may indicate whether these functions are supported. For example, “1” may be set when these functions are supported, and “0” may be set when these functions are not supported. Alternatively, “0” may be set when these functions are supported, and “1” may be set when these functions are not supported.
  • the base station apparatus 1 may notify the downlink grant by cross carrier scheduling to the terminal apparatus 2 that has the function of performing cross carrier scheduling for the downlink and does not have the function of performing cross carrier scheduling for the uplink. However, the terminal device 2 may ignore the uplink grant even if the uplink grant is notified by cross carrier scheduling.
  • the base station apparatus 1 may notify the uplink grant by the cross carrier scheduling to the terminal apparatus 2 that has the function of performing the cross carrier scheduling for the uplink and does not have the function of performing the cross carrier scheduling for the downlink. However, the terminal device 2 may ignore the downlink grant even if the downlink grant is notified by cross carrier scheduling.
  • the upper layer processing unit 201 does not set information indicating whether the function is supported in the function information. May be.
  • the base station apparatus 1 considers that the terminal apparatus 2 does not support functions not set in the function information, and performs various settings. Note that the information indicating whether the function is supported may be information indicating that the function is supported.
  • the upper layer processing unit 201 has a specific value (for example, “0”) or information (for example, “0”) indicating that the function is not supported. not supported ”,“ disable ”,“ FALSE ”, etc.) may be set and the base station apparatus 1 may be notified of function information including the information.
  • the upper layer processing unit 201 has a specific value (for example, “1”) or information (for example, “1”) indicating that the function is supported. supported “,” enable “,” TRUE “, etc.) may be set, and the function information including the information may be notified to the base station apparatus 1.
  • the upper layer processing unit 201 supports information (simultaneousRx-Tx) indicating whether or not a function of simultaneously transmitting / receiving between simultaneously aggregateable bands is supported when there is no function of simultaneously transmitting / receiving between simultaneously aggregateable bands.
  • Information SimultaneousRx-Tx indicating whether or not a function of simultaneously transmitting / receiving between simultaneously aggregateable bands is supported when there is no function of simultaneously transmitting / receiving between simultaneously aggregateable bands.
  • Information itself indicating whether or not a function for simultaneously transmitting and receiving between bands that can be aggregated is supported is not set in the function information.
  • 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 ) (Second power offset (pSRS-OffsetAp)) and the TPC command. Note that 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.
  • the upper layer processing unit 201 sets the transmission power based on the third power offset.
  • 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 parameter information related to uplink power control is information elements and RRC messages including parameters 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 or P CMAX, c ) 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.
  • 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 or P CMAX, c ) 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.
  • the upper layer processing section 201 has a maximum transmission power (total transmission power (total transmission power of the first uplink reference signal and physical uplink control channel) set in the terminal device 2 in a certain serving cell and a certain subframe ( For example, if P CMAX or P CMAX, c ) is exceeded, 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 maximum transmission power total transmission power (total transmission power of the first uplink reference signal and physical uplink control channel) set in the terminal device 2 in a certain serving cell and a certain subframe ( For example, if P CMAX or P CMAX, c ) is exceeded, 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.
  • the instruction information is output to the transmission unit 207 via the control unit 203 so as to transmit the physical uplink shared channel.
  • 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).
  • 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 upper 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.
  • the higher 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.
  • Upper layer processing section 201 sends instruction information to transmitting section 207 via control section 203 so as to generate an uplink reference signal based on information related to the setting of the uplink reference signal notified from 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 reception unit 205 and the transmission unit 207 based on the control information from the higher layer processing unit 201.
  • Control unit 203 outputs the generated control signal to reception unit 205 and transmission unit 207 to control reception unit 205 and 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 either one of the information on the first setting or the information on 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 reception unit 205 may perform reception processing of the received DCI format based on the frame structure type of the cell to be scheduled. In addition, when TDD-FDD carrier aggregation is performed, the reception unit 205 may perform reception processing of the received DCI format based on the frame structure type of the scheduled cell. For example, if the frame structure type is FDD, the receiving unit 205 performs reception processing in the DCI format for FDD, and performs reception processing in the DCI format for TDD if the frame structure type is TDD.
  • the receiving unit 205 may perform PUSCH transmission and PHICH / uplink grant reception based on two RTTs.
  • 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 wireless reception unit 2057 removes a portion corresponding to the guard interval from the converted digital signal, performs fast Fourier transform on the signal from which the guard interval is removed, and extracts a frequency domain signal.
  • the demultiplexing unit 2055 separates the extracted signal into a PDCCH, a PDSCH, and a downlink reference signal (DL-RS: 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.
  • DL-RS Downlink Reference Signal
  • the demodulation unit 2053 demodulates the PDCCH using the QPSK modulation method and outputs the result to the decoding unit 2051. Also, the demodulation unit 2053 demodulates the modulation scheme notified by the downlink control information such as QPSK, 16QAM, and 64QAM with respect to the PDSCH, and outputs it 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. Also, the decoding unit 2051 performs decoding on the coding rate notified by the downlink control information, and outputs the decoded data information to the upper layer processing unit 201.
  • decoding section 2051 When there is no function to perform cross-carrier scheduling independently for uplink and downlink, decoding section 2051 performs decoding processing (blind decoding) with DCI format 0 and DCI format 1A as one DCI format. Do.
  • the decoding unit 2051 When the decoding unit 2051 has a function of performing cross-carrier scheduling independently for the uplink and the downlink, the decoding unit 2051 performs a decoding process using the DCI format 0 and the DCI format 1A as independent DCI formats.
  • the decoding unit 2051 does not expect that uplink carrier cross carrier scheduling such as DCI format 0 or DCI format 4 is performed when there is no function of performing cross carrier scheduling for the uplink.
  • the decoding unit 2051 does not expect to perform downlink carrier cross carrier scheduling such as DCI format 1 or DCI format 1A when there is no function to perform downlink cross carrier scheduling.
  • the decoding unit 2051 may increase the total number of blind decoding when the setting related to any one of the cross carrier scheduling is performed for the uplink and the downlink.
  • the decoding unit 2051 performs a decoding process so as not to exceed the total number of blind decoding when only one of the settings regarding the cross carrier scheduling for the uplink or the downlink is set. For example, in USS, the number of PDCCH candidates is limited. In USS, the aggregation level for decoding is limited. Moreover, the cell (component carrier) which performs a decoding process is restrict
  • 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.
  • channel measurement unit 209 When channel measurement unit 209 is instructed to perform channel evaluation of the first signal and / or second signal, channel measurement unit 209 may output the result of channel evaluation of each signal to higher layer processing unit 201. Good.
  • 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 channel measurement unit 209 causes the same sub of a cell (second cell) different from a certain cell due to the occurrence of an uplink subframe in which uplink transmission is requested in a certain cell (first cell).
  • CRS or CSI-RS cannot be measured in a frame, it may be performed excluding subframes in which the average of measurement results (received power, received quality, channel quality, etc.) in the second cell could not be measured.
  • the channel measurement unit 209 may calculate an average value of measurement results (reception power, reception quality, channel quality, etc.) using only the received CRS and CSI-RS.
  • the calculation result (indicator or information corresponding to the calculation result) may be transmitted to the base station apparatus 1 via the transmission unit 207.
  • the transmission unit 207 generates an uplink demodulation reference signal (UL DMRS) and / or a sounding reference signal (SRS) based on the control signal (control information) input from the control unit 203, and the higher layer processing unit 201 Encodes and modulates input data information, multiplexes PUCCH, PUSCH, and generated UL DMRS and / or SRS, adjusts transmission power of PUCCH, PUSCH, UL DMRS, and SRS, and transmits / receives via transmission / reception antenna 211 To the base station apparatus 1.
  • UL DMRS uplink demodulation reference signal
  • SRS sounding reference signal
  • the transmission unit 207 transmits the information to the base station apparatus 1 via the transmission / reception antenna 211.
  • 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
  • the transmitting unit 207 transmits an uplink signal corresponding to the predetermined grant from a subframe in which the grant is detected to a predetermined subframe.
  • An uplink signal is transmitted in the first uplink subframe after the frame. For example, when a grant is detected in subframe i, an uplink signal can be transmitted in the first uplink subframe after subframe i + k.
  • transmission section 207 sets the transmission power of the uplink signal based on the power control adjustment value obtained by the TPC command received in subframe ik To do.
  • the power control adjustment value f (i) (or g (i)) is set based on a correction value or an absolute value associated with a value set in the TPC command.
  • the accumulation is valid, the correction value associated with the value set in the TPC command is accumulated, and the accumulation result is applied as the power control adjustment value. If accumulation is not valid, the absolute value associated with the value set in a single TPC command is applied as the power control adjustment value.
  • the power control adjustment value f (i) for PUSCH transmission may be set for each serving cell. Moreover, the power control adjustment value f (i) for PUSCH transmission may be set for each subframe set.
  • the power control adjustment value g (i) for PUCCH transmission may be set for each serving cell.
  • the power control adjustment value g (i) for PUCCH transmission may be set for each subframe set.
  • PUCCH cannot be transmitted in a plurality of subframe sets only one power control adjustment value g (i) for PUCCH transmission is set even if a plurality of subframe sets are set.
  • the power control adjustment value g (i) for PUCCH transmission is set for the primary cell.
  • transmission section 207 uses a correction value or an absolute value obtained by a TPC command received in subframe i-K PUSCH. Then, the power control adjustment value f c (i) is set, and the transmission power for the PUSCH transmitted in subframe i is set using the power control adjustment value f c (i).
  • transmission section 207 specifies the value of K PUSCH for PUSCH transmission in a certain subframe as 4.
  • the TDD UL / DL configuration is the uplink reference UL for the serving cell c. Refer to the / DL setting.
  • the transmission unit 207 specifies the value of K PUSCH based on, for example, the table shown in FIG.
  • PUSCH transmission in subframe 2 or 7 is scheduled using PDCCH / EPDCCH with DCI format 0/4 with the least significant bit of the UL index set to “1”. If so, the transmitting unit 207 specifies the value of K PUSCH as 7, and when performing PUSCH transmission in other uplink subframes, the value of K PUSCH is set as shown in FIG. Identify based on the table.
  • the uplink reference UL / DL configuration may be applied to the FDD cell.
  • the transmission unit 207 sets the value of K PUSCH to, for example, FIG. Specify based on the listed table.
  • PUSCH transmission in subframe 2 or 7 is scheduled using PDCCH / EPDCCH with DCI format 0/4 with the least significant bit of the UL index set to “1”.
  • the transmission unit 207 specifies the value of K PUSCH as 7 and performs PUSCH transmission in other uplink subframes, the value of K PUSCH is set as shown in FIG. Identify based on the table. If PUSCH transmission is not scheduled using the DCI format with the UL index for the FDD cell to which the uplink reference UL / DL configuration is applied, the transmission unit 207 sets the value of K PUSCH to, for example, It specifies based on the table of FIG.
  • RTT may be applied to the FDD cell.
  • the value of K PUSCH may be specified based on the value of RTT.
  • the transmission unit 207 sets the value of K PUSCH to a predetermined value (for example, 4).
  • the transmission unit 207 specifies the value of K PUSCH based on the value set in the RTT.
  • the transmission unit 207 sets the value of K PUSCH for the PUSCH in a certain uplink subframe as a predetermined value (for example, 4). Identify.
  • the transmission unit 207 specifies a downlink subframe in which a TPC command for PUSCH transmission in a subframe is transmitted based on the specified K PUSCH value, and is obtained by the TPC command detected from the downlink subframe. Is used to set the transmission power for PUSCH transmission.
  • the transmission unit 207 sets the value obtained from the TPC command to 0 if the subframe i is not an uplink subframe in FDD to which TDD or uplink UL / DL configuration is applied.
  • the power control adjustment value f c (i) in subframe i is the same as the power control adjustment value f c (i-1) in subframe i-1.
  • the transmission unit 207 sets the value obtained from the TPC command to 0 when DRX occurs in the subframe i.
  • the power control adjustment value f c (i) in subframe i is the same as the power control adjustment value f c (i-1) in subframe i-1.
  • transmitting section 207 sets the value obtained from the TPC command to 0.
  • the power control adjustment value f c (i) in subframe i is the same as the power control adjustment value f c (i-1) in subframe i-1.
  • the transmission unit 207 performs physical resource mapping for the PUCCH based on the set parameter.
  • the transmission unit 207 performs physical resource mapping for the PRACH based on the set parameter.
  • the transmitting unit 207 determines the transmission power based on the parameter related to the first uplink power control.
  • the transmission power is set based on the parameter related to the second uplink power control, and the uplink signal is transmitted. To do.
  • the coding unit 2071 performs coding such as turbo coding, convolution coding, and block coding 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 generates a CAZAC sequence of the uplink demodulation reference signal, the first uplink reference signal, and the second uplink reference signal that are generated based on the control signal input from the control unit 203. Giving a cyclic 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 on the basis of the control signal input from the control unit 203 and then performs a discrete Fourier transform (DFT: Discrete Fourier Transform) to generate the PUCCH and PUSCH signals and the generated UL.
  • 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.
  • the reception process may include a detection process.
  • the reception process may include a demodulation process (Demodulation).
  • the reception process may include a decoding process (Decode, Decoding).
  • 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 measurement result of the received power based on CSI-RS or DRS (Discovery 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 CSI-RS or DRS, the terminal device 2 may perform uplink signal transmission power control based on the received power. That is, the terminal device 2 may determine the downlink path loss based on the received power.
  • the terminal device 2 is configured such 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 device 2.
  • the first uplink reference signal and / or the second uplink reference signal may not be transmitted.
  • the base station apparatus 1 or the terminal apparatus 2 sets one as an uplink reference UL-DL setting and sets the other as a downlink reference UL-DL setting. May be.
  • 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.
  • the reference UL-DL setting may be set, and the other may be set as 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. And 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 allocated and a subframe in which PUSCH corresponding to the PDCCH / EPDCCH / PHICH is allocated. 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 has a TDD UL / DL setting for uplink transmission reference (first TDD UL / DL setting) and a TDD UL / DL setting for downlink transmission reference (second TDD UL / DL setting). Is set, and further, when information related to uplink transmission power control is set, the same type of subframe is set in the first TDD UL / DL setting and the second TDD UL / DL setting.
  • the uplink power control of the subframe is set based on the parameters related to the first uplink power control, and different types of subframes are set in the first TDD UL / DL setting and the second TDD UL / DL setting.
  • the uplink power of the subframe is set based on the second uplink power control parameter.
  • the first TDD UL / DL setting may be referred to as an uplink reference UL / DL setting
  • the second TDD UL / DL setting may be referred to as a downlink reference UL / DL setting.
  • the flexible subframe is an uplink subframe and 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 the first setting and the second setting. For example, when a certain subframe i is set as an uplink subframe in the first setting and as a downlink subframe in 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.
  • multiple subframe sets are not two TDD UL / DL settings, but one TDD UL / DL setting and flexible subframe pattern (downlink candidate subframe pattern or uplink candidate subframe pattern, additional subframe) May be set based on 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 may recognize either one as a subframe set for uplink and the other as a subframe set for downlink.
  • the subframe set for uplink is a set of subframes configured for PUSCH and PHICH transmission
  • the downlink subframe set 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.
  • a plurality of subframe sets may be set for one serving cell (primary cell, secondary cell, carrier frequency, transmission frequency, component carrier). There may be a cell in which a plurality of subframe sets are set and a cell in which a plurality of subframe sets are not set.
  • the maximum transmission set for each terminal apparatus 2 for each subframe set when two or more subframe sets are configured independently for one serving cell, the maximum transmission set for each terminal apparatus 2 for each subframe set.
  • the power (P CMAX , P CMAX, c ) may be set. That is, the terminal device 2 may set a plurality of independent maximum transmission powers. That is, a plurality of maximum transmission powers (P CMAX , P CMAX, c ) may be set for one serving cell. Also, a plurality of maximum allowable output powers (P EMAX, c ) may be set for one serving cell.
  • 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. Moreover, the base station apparatus 1 can determine whether it is transmission addressed to its own station based on the difference in the signal sequence of the received uplink signal.
  • the terminal apparatus 2 may calculate a downlink path loss based on the measurement result and use it for uplink transmission power control. .
  • 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).
  • CSI-RS or DRS resource allocation may be frequency-shifted.
  • the frequency shift of CSI-RS or DRS may be determined based on the physical cell ID. Further, the frequency shift of CSI-RS or DRS may be determined based on the virtual cell ID.
  • the terminal device 2 measures the received power of the first downlink reference signal.
  • Information indicating 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 second subframe set is a subframe pattern of a flexible subframe
  • a DCI format including a TPC command field for the flexible subframe is received.
  • Information indicating a possible subframe pattern may be transmitted from the base station apparatus 1 to the terminal apparatus 2.
  • a subframe pattern in which a TPC command applicable to an uplink subframe belonging to the first subframe set is transmitted and a TPC command applicable to an uplink subframe belonging to the second subframe set are Each subframe pattern to be transmitted 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 RSRP measurement result may be independent in a subframe set. Measurement of RSRP by CRS received in the downlink subframe of the fixed subframe and measurement of RSRP by CRS received in the flexible subframe may be performed independently.
  • these subframe sets are indicated by a bitmap (bit string). Also good.
  • a subframe set including fixed subframes may be indicated by a bit string.
  • a subframe set including flexible subframes may be indicated by a bit string.
  • these subframe sets may be set independently for FDD and TDD. For example, in FDD, a 40-bit bit string, in TDD, in a subframe setting (TDD UL / DL setting) 1 to 5, a 20-bit bit string, in subframe setting 0, in a 70-bit bit string, in subframe setting 6, It may be indicated by a 60-bit bit string.
  • SFN System Frame Number
  • a subframe in which “1” is set is used. For example, when “1011000011 (when the left end indicates subframe # 0)” or “1100001101 (when the right end indicates subframe # 0)” is indicated by a 10-bit bit string, subframes # 0, # 2, # 3, # 8 and # 9 are used.
  • the uplink subframe set is based on the uplink reference UL / DL configuration.
  • the downlink subframe set may be set based on the downlink reference UL / DL setting.
  • a subframe pattern (measSubframePatternPCell) for primary cell measurement such as RSRP / RSRQ / radio link monitoring
  • a subframe pattern (csi-measSubframeSet1, csi- measSubframeSet2) and a subframe pattern (epdcch-SubframePattern) for monitoring EPDCCH are set.
  • a subframe pattern (epdcch-SubframePattern) for monitoring the EPDCCH is set for the secondary cell.
  • a subframe pattern (measSubframePatternNeigh) for measuring RSRP and RSRQ at a carrier frequency is set for a neighboring cell.
  • the subframe pattern (csi-measSubframeSet1, csi-measSubframeSet2) for measuring CSI may be common to the primary cell and the secondary cell.
  • the subframe pattern may be set independently for FDD and TDD.
  • FDD FDD
  • TDD Time Division Duplex
  • a 40-bit bit string, in TDD in a subframe setting (TDD UL / DL setting) 1 to 5
  • a 20-bit bit string, in subframe setting 0, in a 70-bit bit string, in subframe setting 6 It may be indicated by a 60-bit bit string.
  • SFN System Frame Number
  • a subframe in which “1” is set is used.
  • subframes # 0, # 2, # 3, # 8 and # 9 are used.
  • the TDD UL / DL setting is transmitted (notified and transmitted) from the base station apparatus 1 to the terminal apparatus 2. Further, the TDD UL / DL setting may be notified by SIB1. Further, the TDD UL / DL setting may be notified by a SIB different from SIB1. Further, the TDD UL / DL setting may be notified by higher layer signaling (RRC signaling, RRC message). For the terminal apparatus 2 that performs communication using a plurality of TDD UL / DL settings, the base station apparatus 1 may notify the TDD UL / DL settings using L1 signaling or L2 signaling.
  • RRC signaling Radio Resource Control
  • the base station apparatus 1 may notify the TDD UL / DL setting in the DCI format, PDCCH / EPDCCH, or MAC CE to the terminal apparatus 2 that performs communication using a plurality of TDD UL / DL settings.
  • the virtual UL / DL setting is transmitted (notified and transmitted) from the base station apparatus 1 to the terminal apparatus 2.
  • the virtual UL / DL setting may be notified by SIB1.
  • the virtual UL / DL setting may be notified by an SIB different from SIB1.
  • the virtual UL / DL configuration may be notified by higher layer signaling (RRC signaling, RRC message).
  • RRC signaling RRC message
  • the base station apparatus 1 performs virtual UL / DL settings by L1 signaling (DCI format, PDCCH / EPDCCH) or L2 signaling (MAC CE). You may be notified.
  • the base station apparatus 1 may notify the virtual UL / DL setting with a DCI format, PDCCH / EPDCCH, or MAC CE to the terminal apparatus 2 that performs communication using a plurality of virtual UL / DL settings.
  • TDD UL / DL settings when a plurality of TDD UL / DL settings are set in one cell, one is used as an uplink reference and one is used as a downlink reference.
  • the TDD UL / DL setting set as an uplink reference is used to perform processing related to uplink transmission / reception, such as PUSCH transmission timing, PHICH reception timing for PUSCH, and uplink grant reception timing.
  • TDD UL / DL settings set as downlink reference include PDCCH / EPDCCH / PDSCH reception timing (monitoring), downlink grant reception timing, PUCCH transmission timing with HARQ-ACK, and so on. Used to perform processing related to reception.
  • each subframe pattern in the primary cell is a TDD UL / DL setting notified by SIB1. May be determined based on Further, each subframe pattern in the primary cell may be determined based on the TDD UL / DL configuration notified by higher layer signaling (RRC signaling, RRC message). In addition, each subframe pattern in the primary cell may be determined based on the TDD UL / DL configuration notified by L1 signaling (downlink grant, uplink grant, PDCCH / EPDCCH, DCI format).
  • each subframe pattern in the primary cell may be determined based on the TDD UL / DL setting notified by L2 signaling (MAC CE). Further, each subframe pattern in the primary cell may be determined based on a TDD UL / DL configuration (uplink reference UL / DL configuration) used as an uplink reference. Further, each subframe pattern in the primary cell may be determined based on a TDD UL / DL configuration (downlink reference UL / DL configuration) used as a downlink reference. Each subframe pattern in the primary cell may be determined based on a common TDD UL / DL configuration. Also, each subframe pattern in the primary cell may be determined independently.
  • MAC CE L2 signaling
  • the subframe pattern for primary cell measurement is based on the TDD UL / DL configuration notified by SIB1, and the subframe pattern for monitoring EPDCCH is TDD notified by higher layer signaling (RRC signaling, RRC message). It may be determined based on the UL / DL setting.
  • the subframe pattern for primary cell measurement may be determined based on the TDD UL / DL configuration notified by SIB1, and the subframe pattern for measuring CSI may be determined based on L1 signaling.
  • the subframe pattern for primary cell measurement is based on a bit string corresponding to subframe setting (TDD UL / DL setting) 0, and the subframe pattern for monitoring EPDCCH is subframe setting (TDD UL / DL / Based on (DL setting) 3, the subframe pattern for measuring CSI may be based on subframe setting (TDD UL / DL setting) 6.
  • the value of the subframe setting (TDD UL / DL setting) is an example, and may be a different value.
  • the subframe pattern in the secondary cell is TDD UL notified in the system information for the secondary cell. It may be determined based on the / DL setting. Further, the subframe pattern in the secondary cell may be determined based on the TDD UL / DL configuration notified by higher layer signaling (RRC signaling, RRC message). Also, the subframe pattern in the secondary cell may be determined based on the TDD UL / DL configuration notified by L1 signaling (downlink grant, uplink grant, PDCCH / EPDCCH, DCI format).
  • the subframe pattern in the secondary cell may be determined based on the TDD UL / DL setting notified by L2 signaling (MAC CE). Further, the subframe pattern in the secondary cell may be determined based on the TDD UL / DL setting (uplink reference UL / DL setting) set as the uplink reference. Further, the subframe pattern in the secondary cell may be determined based on the TDD UL / DL setting (downlink reference UL / DL setting) set as the downlink reference. In addition, when the sub-frame pattern for measuring CSI is set independently of the primary cell, the sub-frame pattern for measuring CSI in the secondary cell may be determined independently of the primary cell.
  • the subframe patterns in the primary cell and the secondary cell are the same. May be determined based on the TDD UL / DL setting. For example, the TDD UL / DL setting notified by SIB1, the TDD UL / DL setting notified by higher layer signaling, or the TDD UL / DL notified by L1 / L2 signaling may be used.
  • each subframe pattern in each of the primary cell and the secondary cell may be determined independently. For example, the subframe pattern in the primary cell is determined based on the TDD UL / DL setting notified by SIB1, and the subframe pattern in the secondary cell is determined based on the TDD UL / DL setting notified by L1 / L2 signaling. Also good.
  • the subframe pattern in the primary cell may be based on the TDD UL / DL setting set as the uplink reference
  • the subframe pattern in the secondary cell may be based on the TDD UL / DL setting set as the downlink reference.
  • the uplink reference UL / DL setting of the primary cell is SIB1 ( Alternatively, it may be notified by system information other than SIB1). Further, the uplink reference UL / DL configuration of the primary cell may be notified by higher layer signaling (RRC signaling, RRC message). Further, the uplink reference UL / DL configuration of the primary cell may be notified by common / dedicated higher layer signaling (RRC signaling, RRC message) between the terminal devices. The uplink reference UL / DL configuration of the primary cell may be notified by L1 / L2 signaling.
  • the downlink reference UL / DL configuration of the primary cell may be notified by the same method as shown in the uplink reference UL / DL configuration of the primary cell. Further, the uplink reference UL / DL setting and the downlink reference UL / DL setting of the primary cell may be set as independent parameters.
  • the uplink reference UL / DL setting of the secondary cell is the system information. May be notified by higher layer signaling (RRC signaling, RRC message) corresponding to. Further, the uplink reference UL / DL configuration of the secondary cell may be notified by common / dedicated higher layer signaling (RRC signaling, RRC message) between terminal devices, which does not correspond to system information.
  • the uplink reference UL / DL configuration of the secondary cell may be notified by L1 / L2 signaling.
  • the downlink reference UL / DL configuration of the secondary cell may be notified by the same method as shown in the uplink reference UL / DL configuration of the secondary cell. Also, the uplink reference UL / DL setting and the downlink reference UL / DL setting of the secondary cell may be set as independent parameters.
  • the downlink reference UL / DL setting (TDD UL / DL setting) for the serving cell is determined based on the TDD UL / DL setting of the primary cell and the TDD UL / DL setting of the secondary cell.
  • the downlink reference UL / DL setting for the serving cell is the TDD UL / DL setting notified by SIB1 in the UL / DL setting of the primary cell, and the TDD UL / DL setting notified by L1 signaling in the UL / DL setting of the secondary cell. As may be determined.
  • the downlink reference UL / DL setting for the serving cell is determined with the UL / DL setting of the primary cell as the downlink reference UL / DL setting and the UL / DL setting of the secondary cell as the downlink reference UL / DL setting. Also good. Also, the downlink reference UL / DL setting for the serving cell is determined by setting the UL / DL setting of the primary cell as the downlink reference UL / DL setting and the UL / DL setting of the secondary cell as the uplink reference TDD UL / DL setting. May be.
  • the downlink reference UL / DL setting for the serving cell is determined by setting the UL / DL setting of the primary cell as the uplink reference TDD UL / DL setting, and the UL / DL setting of the secondary cell as the downlink reference TDD UL / DL setting. May be.
  • the UL / DL setting of the primary cell and the secondary cell is an example, and the notified TDD UL / DL setting may be used depending on other conditions.
  • the uplink reference UL / DL setting (TDD UL / DL setting) for the serving cell is determined based on the TDD UL / DL setting of a certain serving cell and the TDD UL / DL setting of another serving cell.
  • the uplink reference UL / DL setting for the serving cell is a SIB1.
  • the notified TDD UL / DL setting may be used, and other serving cells may be determined as the TDD UL / DL setting notified by higher layer signaling.
  • the uplink reference UL / DL setting for the serving cell is the TDD UL / DL setting notified by SIB1 of the UL / DL setting of a certain serving cell, and the TDD UL notified of the UL / DL setting of other serving cells by L1 signaling.
  • / DL setting may be determined.
  • the uplink reference UL / DL setting for the serving cell is determined by setting the UL / DL setting of a certain serving cell as an uplink reference UL / DL setting and the UL / DL setting of another serving cell as an uplink reference UL / DL setting. May be.
  • the uplink reference UL / DL setting for the serving cell is determined by setting the UL / DL setting of a certain serving cell as an uplink reference UL / DL setting and the UL / DL setting of another serving cell as a downlink reference UL / DL setting. May be.
  • the TDD UL / DL setting in a plurality of serving cells is an example, and may be a TDD UL / DL setting set under other conditions.
  • the downlink transmission / reception process is performed based on the UL / DL setting for the serving cell. Further, uplink transmission / reception processing in the primary cell is performed based on the uplink reference UL / DL setting for the serving cell. In this case, if the downlink grant for the secondary cell is detected in the primary cell, the downlink reception (PDSCH reception) of the secondary cell is performed based on the downlink reference UL / DL setting for the serving cell.
  • HARQ-ACK for downlink reception of the secondary cell is transmitted on the PUCCH of the primary cell.
  • transmission of PUCCH is performed based on the downlink reference UL / DL setting with respect to a serving cell.
  • the uplink transmission for example, PUSCH transmission
  • the PHICH for the uplink transmission of the secondary cell is transmitted in the primary cell. At this time, the transmission of PHICH is performed based on the uplink reference UL / DL setting for the serving cell.
  • the terminal apparatus 2 and the base station apparatus 1 perform uplink / downlink transmission / reception based on the uplink reference UL / DL setting and the downlink reference UL / DL setting. Also, in this case, for PUSCH transmission scheduled for the serving cell c in the subframe n (for serving cell c or a cell different from the serving cell c), the terminal device 2 is determined by the PHICH resource of the serving cell c in the subframe n + k PHICH. The k PHICH is determined based on the uplink reference UL / DL configuration for the serving cell.
  • the base station apparatus 1 uses the PHICH resource of the serving cell c in the subframe n + k PHICH. , HARQ-ACK for PUSCH is transmitted.
  • the subframe pattern in the adjacent cell is TDD UL notified in the system information for the adjacent cell. It may be determined based on the / DL setting. Further, the subframe pattern in the neighboring cell may be determined based on the TDD UL / DL configuration notified by higher layer signaling (RRC signaling, RRC message). Further, the subframe pattern in the adjacent cell may be determined based on the TDD UL / DL setting notified by common / dedicated higher layer signaling (RRC signaling, RRC message) between the terminal devices.
  • RRC signaling common / dedicated higher layer signaling
  • the subframe pattern in the adjacent cell may be determined based on the TDD UL / DL configuration notified by L1 signaling (downlink grant, uplink grant, PDCCH / EPDCCH, DCI format). Further, the subframe pattern in the adjacent cell may be determined based on the TDD UL / DL setting notified by L2 signaling (MAC CE). Further, the subframe pattern in the adjacent cell may be determined based on the TDD UL / DL setting (uplink reference UL / DL setting) set as the uplink reference. Also, the subframe pattern in the adjacent cell may be determined based on the TDD UL / DL setting (downlink reference UL / DL setting) set as the downlink reference.
  • L1 signaling downlink grant, uplink grant, PDCCH / EPDCCH, DCI format
  • the subframe pattern in the adjacent cell may be determined based on the TDD UL / DL setting notified by L2 signaling (MAC CE). Further, the subframe pattern in the adjacent cell may
  • 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.
  • a port (antenna port) corresponding to the precoded RS is a port equivalent to the MIMO layer.
  • 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. .
  • the correction value corresponding to the value set in the TPC command field included in DCI format 3 / 3A (Or absolute value) is applied to the power control adjustment value for the transmission power of the PUSCH transmitted in a specific subframe set, regardless of which subframe set the downlink subframe belongs to.
  • the accumulation of the TPC command included in the DCI format 3 / 3A is the power used for the transmission power for the PUSCH transmitted in the specific subframe set. It may be applied to the control adjustment value.
  • the specific subframe set may be a fixed subframe set, a flexible subframe set, or an arbitrary subframe set.
  • parameters related to uplink power control are parameters used for transmission power control of uplink physical channels / physical signals (PUSCH, PUCCH, PRACH, SRS, DMRS, etc.)
  • Parameters used for transmission power control include information on switching or (re) setting of various parameters used for setting transmission power of various uplink physical channels.
  • Parameters related to downlink transmission power control include downlink physical channels / physical signals (CRS, UERS (DL DMRS), CSI-RS, PDSCH, PDCCH / EPDCCH, PBCH, PSS / SSS, PMCH, PRS, etc.). It is a parameter used for transmission power control, and the parameter used for transmission power control includes information on switching or (re) setting of various parameters used for setting transmission power of various downlink physical channels. It is out.
  • the base station device 1 may be configured to set a plurality of virtual cell IDs for one terminal device 2.
  • a network including the base station apparatus 1 and at least one base station apparatus 1 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 physical channel / physical signal setting. Also, the virtual cell ID may be shared by a plurality of physical channels / physical signals.
  • the resource block may include a physical resource block. Further, the resource block may include a virtual resource block. Further, the resource block may include a pseudo resource block. Bandwidth may also be associated with these resource blocks.
  • setting power includes setting a value of power
  • setting power includes setting a value for a parameter related to power, and calculates power.
  • Doing includes calculating a power value
  • measuring the power includes measuring the power value
  • reporting the power includes reporting the power value.
  • the expression “power” includes the meaning of the value of power as appropriate.
  • not transmitting includes not performing transmission processing.
  • not performing transmission includes not performing signal generation for transmission.
  • not transmitting includes generating up to a signal (or information) and not transmitting a signal (or information).
  • not receiving includes not receiving processing. Further, not receiving includes not performing detection processing. Further, not receiving includes not performing decoding / demodulation processing.
  • 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 present invention is not limited to the above-described embodiment.
  • the present invention may be applied to all portable terminals.
  • the mobile terminal includes a tablet and a camera device. That is, the present invention is applied to all devices equipped with the device, chip, or program of the present invention.
  • 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 Needless to say, it can be applied to air conditioning equipment, office equipment, vending machines, and other daily life equipment.
  • 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.
  • Some aspects of the present invention can be applied to a terminal device, a base station device, and a method that require efficient communication in a communication system in which a base station device and a terminal device communicate.

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

Abstract

La présente invention concerne un appareil terminal (2), qui communique avec un appareil de station de base (1), et qui met en œuvre, sur la base d'un système prédéfini, un mappage de ressources physiques pour une émission de PRACH si un premier paramètre et/ou un second paramètre ont été établis.
PCT/JP2015/058213 2014-03-20 2015-03-19 Appareil terminal, appareil de station de base et procédé WO2015141770A1 (fr)

Applications Claiming Priority (2)

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JP2014-058154 2014-03-20
JP2014058154A JP2017092508A (ja) 2014-03-20 2014-03-20 端末装置、基地局装置および方法

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WO2015141770A1 true WO2015141770A1 (fr) 2015-09-24

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JP2017085356A (ja) * 2015-10-28 2017-05-18 日本電信電話株式会社 端局装置及び帯域割当方法
WO2017188423A1 (fr) * 2016-04-28 2017-11-02 株式会社Ｎｔｔドコモ Terminal utilisateur et procédé de communication sans fil
CN108476528A (zh) * 2016-01-29 2018-08-31 夏普株式会社 终端装置、基站装置以及通信方法
CN108886780A (zh) * 2016-03-31 2018-11-23 株式会社Ntt都科摩 用户终端、无线基站以及无线通信方法
CN110169184A (zh) * 2016-11-09 2019-08-23 株式会社Ntt都科摩 用户终端以及无线通信方法
CN110383879A (zh) * 2017-01-06 2019-10-25 株式会社Ntt都科摩 用户终端以及无线通信方法
CN112740770A (zh) * 2018-07-20 2021-04-30 株式会社Ntt都科摩 基站以及用户终端
WO2023044818A1 (fr) * 2021-09-24 2023-03-30 Apple Inc. Traitement de collision pour des opérations duplex à répartition croisée

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WO2019147072A1 (fr) 2018-01-25 2019-08-01 엘지전자 주식회사 Procédé de transmission de préambules de nprach dans un système de communication sans fil prenant en charge un tdd, et dispositif associé
CN111385079B (zh) * 2018-12-31 2022-02-18 华为技术有限公司 无线网络通信方法和终端设备
JP7369286B2 (ja) * 2019-10-03 2023-10-25 エルジー エレクトロニクス インコーポレイティド 無線通信システムにおいて信号を送受信する方法及び装置
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WO2023135763A1 (fr) * 2022-01-14 2023-07-20 株式会社Ｎｔｔドコモ Terminal et procédé de communication

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017085356A (ja) * 2015-10-28 2017-05-18 日本電信電話株式会社 端局装置及び帯域割当方法
CN108476528A (zh) * 2016-01-29 2018-08-31 夏普株式会社 终端装置、基站装置以及通信方法
CN108476528B (zh) * 2016-01-29 2023-03-28 夏普株式会社 终端装置、基站装置以及通信方法
CN108886780A (zh) * 2016-03-31 2018-11-23 株式会社Ntt都科摩 用户终端、无线基站以及无线通信方法
WO2017188423A1 (fr) * 2016-04-28 2017-11-02 株式会社Ｎｔｔドコモ Terminal utilisateur et procédé de communication sans fil
CN110169184A (zh) * 2016-11-09 2019-08-23 株式会社Ntt都科摩 用户终端以及无线通信方法
CN110169184B (zh) * 2016-11-09 2023-04-18 株式会社Ntt都科摩 用户终端以及无线通信方法
CN110383879A (zh) * 2017-01-06 2019-10-25 株式会社Ntt都科摩 用户终端以及无线通信方法
CN112740770A (zh) * 2018-07-20 2021-04-30 株式会社Ntt都科摩 基站以及用户终端
WO2023044818A1 (fr) * 2021-09-24 2023-03-30 Apple Inc. Traitement de collision pour des opérations duplex à répartition croisée

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